X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=shell%2Fev-view.c;h=8e494adedc1a527007b1860ddb634a725c1dc06a;hb=848665b157185945d190a7a746d054d7f5d5e6e0;hp=e3c81a05b5c85b4d256cf2d93a758fd91e446ba4;hpb=42ddc3073ecb88271a0ffc74326878627d71b34e;p=evince.git diff --git a/shell/ev-view.c b/shell/ev-view.c index e3c81a05..8e494ade 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -18,6 +18,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. */ +#include #include #include #include @@ -28,8 +29,13 @@ #include "ev-marshal.h" #include "ev-view.h" +#include "ev-selection.h" #include "ev-document-find.h" +#include "ev-document-misc.h" #include "ev-debug.h" +#include "ev-job-queue.h" +#include "ev-page-cache.h" +#include "ev-pixbuf-cache.h" #define EV_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass)) #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW)) @@ -38,15 +44,27 @@ enum { PROP_0, PROP_STATUS, - PROP_FIND_STATUS + PROP_FIND_STATUS, + PROP_CONTINUOUS, + PROP_DUAL_PAGE, + PROP_FULLSCREEN, + PROP_PRESENTATION, + PROP_SIZING_MODE, + PROP_ZOOM, }; enum { - TARGET_STRING, - TARGET_TEXT, - TARGET_COMPOUND_TEXT, - TARGET_UTF8_STRING, - TARGET_TEXT_BUFFER_CONTENTS + SIGNAL_BINDING_ACTIVATED, + SIGNAL_ZOOM_INVALID, + N_SIGNALS, +}; + +enum { + TARGET_STRING, + TARGET_TEXT, + TARGET_COMPOUND_TEXT, + TARGET_UTF8_STRING, + TARGET_TEXT_BUFFER_CONTENTS }; static const GtkTargetEntry targets[] = { @@ -56,38 +74,91 @@ static const GtkTargetEntry targets[] = { { "UTF8_STRING", 0, TARGET_UTF8_STRING }, }; +static guint signals[N_SIGNALS]; + typedef enum { EV_VIEW_CURSOR_NORMAL, + EV_VIEW_CURSOR_IBEAM, EV_VIEW_CURSOR_LINK, - EV_VIEW_CURSOR_WAIT + EV_VIEW_CURSOR_WAIT, + EV_VIEW_CURSOR_HIDDEN, + EV_VIEW_CURSOR_DRAG } EvViewCursor; +#define ZOOM_IN_FACTOR 1.2 +#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + +#define MIN_SCALE 0.05409 +#define MAX_SCALE 4.0 + +/* Information for middle clicking and moving around the doc */ +typedef struct { + gboolean in_drag; + GdkPoint start; + gdouble hadj; + gdouble vadj; +} DragInfo; + +/* Information for handling selection */ +typedef struct { + gboolean in_selection; + GdkPoint start; + GList *selections; +} SelectionInfo; + +typedef enum { + SCROLL_TO_KEEP_POSITION, + SCROLL_TO_CURRENT_PAGE, + SCROLL_TO_CENTER +} PendingScroll; + struct _EvView { GtkWidget parent_instance; EvDocument *document; - - GdkWindow *bin_window; char *status; char *find_status; - - int scroll_x; - int scroll_y; + + gint scroll_x; + gint scroll_y; + + /* Information for middle clicking and dragging around. */ + DragInfo drag_info; + + /* Selection */ + EvViewSelectionMode selection_mode; + SelectionInfo selection_info; gboolean pressed_button; - gboolean has_selection; - GdkPoint selection_start; - GdkRectangle selection; EvViewCursor cursor; GtkAdjustment *hadjustment; GtkAdjustment *vadjustment; + EvPageCache *page_cache; + EvPixbufCache *pixbuf_cache; + + gint start_page; + gint end_page; + gint current_page; + + EvJobRender *current_job; + int find_page; int find_result; + int spacing; double scale; + + gboolean continuous; + gboolean dual_page; + gboolean fullscreen; + gboolean presentation; + EvSizingMode sizing_mode; + + PendingScroll pending_scroll; + gboolean pending_resize; }; struct _EvViewClass { @@ -96,44 +167,238 @@ struct _EvViewClass { void (*set_scroll_adjustments) (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); - void (*scroll_view) (EvView *view, + void (*binding_activated) (EvView *view, GtkScrollType scroll, gboolean horizontal); - - /* Should this be notify::page? */ - void (*page_changed) (EvView *view); + void (*zoom_invalid) (EvView *view); }; -static guint page_changed_signal = 0; +/*** Scrolling ***/ +static void scroll_to_current_page (EvView *view, + GtkOrientation orientation); +static void ev_view_set_scroll_adjustments (EvView *view, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment); +static void view_update_range_and_current_page (EvView *view); +static void set_scroll_adjustment (EvView *view, + GtkOrientation orientation, + GtkAdjustment *adjustment); +static void ev_view_set_scroll_adjustments (EvView *view, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment); +static void add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GtkScrollType scroll, + gboolean horizontal); +static void ev_view_binding_activated (EvView *view, + GtkScrollType scroll, + gboolean horizontal); +static void ensure_rectangle_is_visible (EvView *view, + GdkRectangle *rect); + +/*** Geometry computations ***/ +static void compute_border (EvView *view, + int width, + int height, + GtkBorder *border); +static void get_page_y_offset (EvView *view, + int page, + double zoom, + int *y_offset); +static gboolean get_page_extents (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border); +static void view_rect_to_doc_rect (EvView *view, + GdkRectangle *view_rect, + GdkRectangle *page_area, + EvRectangle *doc_rect); +static void doc_rect_to_view_rect (EvView *view, + int page, + EvRectangle *doc_rect, + GdkRectangle *view_rect); +static void find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset); + +/*** Hyperrefs ***/ +static EvLink* get_link_at_location (EvView *view, + gdouble x, + gdouble y); +static void go_to_link (EvView *view, + EvLink *link); +static char* status_message_from_link (EvView *view, + EvLink *link); + +/*** GtkWidget implementation ***/ +static void ev_view_size_request_continuous_dual_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_continuous (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_dual_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request_single_page (EvView *view, + GtkRequisition *requisition); +static void ev_view_size_request (GtkWidget *widget, + GtkRequisition *requisition); +static void ev_view_size_allocate (GtkWidget *widget, + GtkAllocation *allocation); +static void ev_view_realize (GtkWidget *widget); +static void ev_view_unrealize (GtkWidget *widget); +static gboolean ev_view_scroll_event (GtkWidget *widget, + GdkEventScroll *event); +static gboolean ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event); +static gboolean ev_view_button_press_event (GtkWidget *widget, + GdkEventButton *event); +static gboolean ev_view_motion_notify_event (GtkWidget *widget, + GdkEventMotion *event); +static gboolean ev_view_button_release_event (GtkWidget *widget, + GdkEventButton *event); + +/*** Drawing ***/ +static guint32 ev_gdk_color_to_rgb (const GdkColor *color); +static void draw_rubberband (GtkWidget *widget, + GdkWindow *window, + const GdkRectangle *rect, + guchar alpha); +static void highlight_find_results (EvView *view, + int page); +static void draw_one_page (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border, + GdkRectangle *expose_area); + +/*** Callbacks ***/ +static void find_changed_cb (EvDocument *document, + int page, + EvView *view); +static void job_finished_cb (EvPixbufCache *pixbuf_cache, + EvView *view); +static void page_changed_cb (EvPageCache *page_cache, + int new_page, + EvView *view); +static void on_adjustment_value_changed (GtkAdjustment *adjustment, + EvView *view); + +/*** GObject ***/ +static void ev_view_finalize (GObject *object); +static void ev_view_destroy (GtkObject *object); +static void ev_view_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec); +static void ev_view_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec); +static void ev_view_class_init (EvViewClass *class); +static void ev_view_init (EvView *view); + +/*** Zoom and sizing ***/ +static double zoom_for_size_fit_width (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width); +static double zoom_for_size_best_fit (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width, + int hsb_width); +static void ev_view_zoom_for_size_presentation (EvView *view, + int width, + int height); +static void ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_continuous (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +static void ev_view_zoom_for_size_single_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height); +/*** Cursors ***/ +static GdkCursor* ev_view_create_invisible_cursor (void); +static void ev_view_set_cursor (EvView *view, + EvViewCursor new_cursor); + +/*** Status messages ***/ +static void ev_view_set_status (EvView *view, + const char *message); +static void update_find_status_message (EvView *view); +static void ev_view_set_find_status (EvView *view, + const char *message); +/*** Find ***/ +static void jump_to_find_result (EvView *view); +static void jump_to_find_page (EvView *view); + +/*** Selection ***/ +static void compute_selections (EvView *view, + GdkPoint *start, + GdkPoint *stop); +static void clear_selection (EvView *view); +static char* get_selected_text (EvView *ev_view); +static void ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data); +static void ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data); +static void ev_view_update_primary_selection (EvView *ev_view); + -static void ev_view_set_scroll_adjustments (EvView *view, - GtkAdjustment *hadjustment, - GtkAdjustment *vadjustment); - G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET) -/*** Helper functions ***/ - static void -view_update_adjustments (EvView *view) +scroll_to_current_page (EvView *view, GtkOrientation orientation) { - int old_x = view->scroll_x; - int old_y = view->scroll_y; - - if (view->hadjustment) - view->scroll_x = view->hadjustment->value; - else - view->scroll_x = 0; + GdkRectangle page_area; + GtkBorder border; - if (view->vadjustment) - view->scroll_y = view->vadjustment->value; - else - view->scroll_y = 0; - - if (GTK_WIDGET_REALIZED (view) && - (view->scroll_x != old_x || view->scroll_y != old_y)) { - gdk_window_move (view->bin_window, - view->scroll_x, - view->scroll_y); - gdk_window_process_updates (view->bin_window, TRUE); + if (view->document == NULL) { + return; + } + + get_page_extents (view, view->current_page, &page_area, &border); + + if (orientation == GTK_ORIENTATION_VERTICAL) { + if (view->continuous) { + gtk_adjustment_clamp_page (view->vadjustment, + page_area.y - view->spacing, + page_area.y + view->vadjustment->page_size); + } else { + gtk_adjustment_set_value (view->vadjustment, + view->vadjustment->lower); + } + } else { + if (view->dual_page) { + gtk_adjustment_clamp_page (view->hadjustment, + page_area.x, + page_area.x + view->hadjustment->page_size); + } else { + gtk_adjustment_set_value (view->hadjustment, + CLAMP (view->hadjustment->value, + view->hadjustment->lower, + view->hadjustment->upper - + view->hadjustment->page_size)); + } } } @@ -143,10 +408,12 @@ view_set_adjustment_values (EvView *view, { GtkWidget *widget = GTK_WIDGET (view); GtkAdjustment *adjustment; - gboolean value_changed = FALSE; int requisition; int allocation; + double factor; + gint new_value; + if (orientation == GTK_ORIENTATION_HORIZONTAL) { requisition = widget->requisition.width; allocation = widget->allocation.width; @@ -159,653 +426,1311 @@ view_set_adjustment_values (EvView *view, if (!adjustment) return; - + + factor = 1.0; + switch (view->pending_scroll) { + case SCROLL_TO_KEEP_POSITION: + factor = (adjustment->value) / adjustment->upper; + break; + case SCROLL_TO_CURRENT_PAGE: + break; + case SCROLL_TO_CENTER: + factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper; + break; + } + adjustment->page_size = allocation; adjustment->step_increment = allocation * 0.1; adjustment->page_increment = allocation * 0.9; adjustment->lower = 0; adjustment->upper = MAX (allocation, requisition); - if (adjustment->value > adjustment->upper - adjustment->page_size) { - adjustment->value = adjustment->upper - adjustment->page_size; - value_changed = TRUE; + /* + * We add 0.5 to the values before to average out our rounding errors. + */ + switch (view->pending_scroll) { + case SCROLL_TO_KEEP_POSITION: + new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size); + gtk_adjustment_set_value (adjustment, (int)new_value); + break; + case SCROLL_TO_CURRENT_PAGE: + scroll_to_current_page (view, orientation); + break; + case SCROLL_TO_CENTER: + new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5, + 0, adjustment->upper - adjustment->page_size); + gtk_adjustment_set_value (adjustment, (int)new_value); + break; } gtk_adjustment_changed (adjustment); - if (value_changed) - gtk_adjustment_value_changed (adjustment); } -/*** Virtual function implementations ***/ - static void -ev_view_finalize (GObject *object) +view_update_range_and_current_page (EvView *view) { - EvView *view = EV_VIEW (object); - - LOG ("Finalize"); + /* Presentation trumps all other modes */ + if (view->presentation) { + view->start_page = view->current_page; + view->end_page = view->current_page; + } else if (view->continuous) { + GdkRectangle current_area, unused, page_area; + GtkBorder border; + gint current_page; + gboolean found = FALSE; + int i; + + if (!(view->vadjustment && view->hadjustment)) + return; + + current_area.x = view->hadjustment->value; + current_area.width = view->hadjustment->upper; + current_area.y = view->vadjustment->value; + current_area.height = view->vadjustment->page_size; + + for (i = 0; i < ev_page_cache_get_n_pages (view->page_cache); i++) { + + get_page_extents (view, i, &page_area, &border); + + if (gdk_rectangle_intersect (¤t_area, &page_area, &unused)) { + if (! found) { + view->start_page = i; + found = TRUE; + + } + view->end_page = i; + } else if (found) { + break; + } + } - if (view->document) - g_object_unref (view->document); + current_page = ev_page_cache_get_current_page (view->page_cache); - ev_view_set_scroll_adjustments (view, NULL, NULL); + if (current_page < view->start_page || current_page > view->end_page) { + view->current_page = view->start_page; + ev_page_cache_set_current_page (view->page_cache, view->start_page); + } + } else { + if (view->dual_page) { + if (view->current_page % 2 == 0) { + view->start_page = view->current_page; + if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) + view->end_page = view->start_page + 1; + } else { + view->start_page = view->current_page - 1; + view->end_page = view->current_page; + } + } else { + view->start_page = view->current_page; + view->end_page = view->current_page; + } + } - G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); + ev_pixbuf_cache_set_page_range (view->pixbuf_cache, + view->start_page, + view->end_page, + view->scale, + view->selection_info.selections); } static void -ev_view_destroy (GtkObject *object) +set_scroll_adjustment (EvView *view, + GtkOrientation orientation, + GtkAdjustment *adjustment) { - EvView *view = EV_VIEW (object); + GtkAdjustment **to_set; - ev_view_set_scroll_adjustments (view, NULL, NULL); - - GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); + if (orientation == GTK_ORIENTATION_HORIZONTAL) + to_set = &view->hadjustment; + else + to_set = &view->vadjustment; + + if (*to_set != adjustment) { + if (*to_set) { + g_signal_handlers_disconnect_by_func (*to_set, + (gpointer) on_adjustment_value_changed, + view); + g_object_unref (*to_set); + } + + *to_set = adjustment; + view_set_adjustment_values (view, orientation); + + if (*to_set) { + g_object_ref (*to_set); + g_signal_connect (*to_set, "value_changed", + G_CALLBACK (on_adjustment_value_changed), view); + } + } } static void -ev_view_size_request (GtkWidget *widget, - GtkRequisition *requisition) +ev_view_set_scroll_adjustments (EvView *view, + GtkAdjustment *hadjustment, + GtkAdjustment *vadjustment) { - EvView *view = EV_VIEW (widget); - - if (GTK_WIDGET_REALIZED (widget)) { - if (view->document) { - ev_document_get_page_size (view->document, - -1, - &requisition->width, - &requisition->height); - } else { - requisition->width = 10; - requisition->height = 10; - } + set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); + set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); - requisition->width += 2; - requisition->height += 2; - } - + on_adjustment_value_changed (NULL, view); } static void -ev_view_size_allocate (GtkWidget *widget, - GtkAllocation *allocation) +add_scroll_binding_keypad (GtkBindingSet *binding_set, + guint keyval, + GtkScrollType scroll, + gboolean horizontal) { - EvView *view = EV_VIEW (widget); + guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; - GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); + gtk_binding_entry_add_signal (binding_set, keyval, 0, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); + gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0, + "binding_activated", 2, + GTK_TYPE_SCROLL_TYPE, scroll, + G_TYPE_BOOLEAN, horizontal); +} - view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); - view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); +void +ev_view_scroll (EvView *view, + EvScrollType scroll) +{ + GtkAdjustment *adjustment; + double value, increment; + gboolean first_page = FALSE; + gboolean last_page = FALSE; - if (GTK_WIDGET_REALIZED (widget)) { - gdk_window_resize (view->bin_window, - MAX (widget->allocation.width, widget->requisition.width), - MAX (widget->allocation.height, widget->requisition.height)); + /* Assign values for increment and vertical adjustment */ + adjustment = view->vadjustment; + increment = adjustment->page_size * 0.75; + value = adjustment->value; + + /* Assign boolean for first and last page */ + if (view->current_page == 0) + first_page = TRUE; + if (view->current_page == ev_page_cache_get_n_pages (view->page_cache) - 1) + last_page = TRUE; + + switch (scroll) { + case EV_SCROLL_PAGE_BACKWARD: + /* Do not jump backwards if at the first page */ + if (value == (adjustment->lower) && first_page) { + /* Do nothing */ + /* At the top of a page, assign the upper bound limit of previous page */ + } else if (value == (adjustment->lower)) { + value = adjustment->upper - adjustment->page_size; + ev_page_cache_set_current_page (view->page_cache, view->current_page - 1); + /* Jump to the top */ + } else { + value = MAX (value - increment, adjustment->lower); + } + break; + case EV_SCROLL_PAGE_FORWARD: + /* Do not jump forward if at the last page */ + if (value == (adjustment->upper - adjustment->page_size) && last_page) { + /* Do nothing */ + /* At the bottom of a page, assign the lower bound limit of next page */ + } else if (value == (adjustment->upper - adjustment->page_size)) { + value = 0; + ev_page_cache_set_current_page (view->page_cache, view->current_page + 1); + /* Jump to the bottom */ + } else { + value = MIN (value + increment, adjustment->upper - adjustment->page_size); + } + break; + default: + break; } + + gtk_adjustment_set_value (adjustment, value); } static void -ev_view_realize (GtkWidget *widget) +ev_view_binding_activated (EvView *view, + GtkScrollType scroll, + gboolean horizontal) { - EvView *view = EV_VIEW (widget); - GdkWindowAttr attributes; + GtkAdjustment *adjustment; + double value; - GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - - attributes.window_type = GDK_WINDOW_CHILD; - attributes.wclass = GDK_INPUT_OUTPUT; - attributes.visual = gtk_widget_get_visual (widget); - attributes.colormap = gtk_widget_get_colormap (widget); - - attributes.x = widget->allocation.x; - attributes.y = widget->allocation.y; - attributes.width = widget->allocation.width; - attributes.height = widget->allocation.height; - attributes.event_mask = 0; - - widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), - &attributes, - GDK_WA_X | GDK_WA_Y | - GDK_WA_COLORMAP | - GDK_WA_VISUAL); - gdk_window_set_user_data (widget->window, widget); - widget->style = gtk_style_attach (widget->style, widget->window); - - attributes.x = 0; - attributes.y = 0; - attributes.width = MAX (widget->allocation.width, widget->requisition.width); - attributes.height = MAX (widget->allocation.height, widget->requisition.height); - attributes.event_mask = GDK_EXPOSURE_MASK | - GDK_BUTTON_PRESS_MASK | - GDK_BUTTON_RELEASE_MASK | - GDK_SCROLL_MASK | - GDK_KEY_PRESS_MASK | - GDK_POINTER_MOTION_MASK; - - view->bin_window = gdk_window_new (widget->window, - &attributes, - GDK_WA_X | GDK_WA_Y | - GDK_WA_COLORMAP | - GDK_WA_VISUAL); - gdk_window_set_user_data (view->bin_window, widget); - gdk_window_show (view->bin_window); - - widget->style = gtk_style_attach (widget->style, view->bin_window); - gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]); + if (view->presentation) { + switch (scroll) { + case GTK_SCROLL_STEP_BACKWARD: + ev_page_cache_prev_page (view->page_cache); + break; + case GTK_SCROLL_STEP_FORWARD: + ev_page_cache_next_page (view->page_cache); + break; + default: + break; + } + return; + } - if (view->document) { - ev_document_set_target (view->document, view->bin_window); + if (horizontal) { + adjustment = view->hadjustment; + } else { + adjustment = view->vadjustment; + } + + value = adjustment->value; - /* We can't get page size without a target, so we have to - * queue a size request at realization. Could be fixed - * with EvDocument changes to allow setting a GdkScreen - * without setting a target. - */ - gtk_widget_queue_resize (widget); + switch (scroll) { + case GTK_SCROLL_STEP_BACKWARD: + value -= adjustment->step_increment; + break; + case GTK_SCROLL_STEP_FORWARD: + value += adjustment->step_increment; + break; + default: + break; } + + value = CLAMP (value, adjustment->lower, + adjustment->upper - adjustment->page_size); + + gtk_adjustment_set_value (adjustment, value); } +#define MARGIN 5 + static void -ev_view_unrealize (GtkWidget *widget) +ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) { - EvView *view = EV_VIEW (widget); + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment; + int value; - if (view->document) - ev_document_set_target (view->document, NULL); + adjustment = view->vadjustment; + + if (rect->y < adjustment->value) { + value = MAX (adjustment->lower, rect->y - MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } else if (rect->y + rect->height > + adjustment->value + widget->allocation.height) { + value = MIN (adjustment->upper, rect->y + rect->height - + widget->allocation.height + MARGIN); + gtk_adjustment_set_value (view->vadjustment, value); + } - gdk_window_set_user_data (view->bin_window, NULL); - gdk_window_destroy (view->bin_window); - view->bin_window = NULL; + adjustment = view->hadjustment; - GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget); + if (rect->x < adjustment->value) { + value = MAX (adjustment->lower, rect->x - MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } else if (rect->x + rect->height > + adjustment->value + widget->allocation.width) { + value = MIN (adjustment->upper, rect->x + rect->width - + widget->allocation.width + MARGIN); + gtk_adjustment_set_value (view->hadjustment, value); + } } -static guint32 -ev_gdk_color_to_rgb (const GdkColor *color) -{ - guint32 result; - result = (0xff0000 | (color->red & 0xff00)); - result <<= 8; - result |= ((color->green & 0xff00) | (color->blue >> 8)); - return result; -} +/*** Geometry computations ***/ static void -draw_rubberband (GtkWidget *widget, GdkWindow *window, - const GdkRectangle *rect, guchar alpha) +compute_border (EvView *view, int width, int height, GtkBorder *border) { - GdkGC *gc; - GdkPixbuf *pixbuf; - GdkColor *fill_color_gdk; - guint fill_color; + if (view->presentation) { + border->left = 0; + border->right = 0; + border->top = 0; + border->bottom = 0; + } else { + ev_document_misc_get_page_border_size (width, height, border); + } +} - fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]); - fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha; +static void get_page_y_offset (EvView *view, + int page, + double zoom, + int *y_offset) +{ + int max_width, offset; + GtkBorder border; - pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, - rect->width, rect->height); - gdk_pixbuf_fill (pixbuf, fill_color); + g_return_if_fail (y_offset != NULL); - gdk_draw_pixbuf (window, NULL, pixbuf, - 0, 0, - rect->x,rect->y, - rect->width, rect->height, - GDK_RGB_DITHER_NONE, - 0, 0); + ev_page_cache_get_max_width (view->page_cache, zoom, &max_width); - g_object_unref (pixbuf); + compute_border (view, max_width, max_width, &border); - gc = gdk_gc_new (window); - gdk_gc_set_rgb_fg_color (gc, fill_color_gdk); - gdk_draw_rectangle (window, gc, FALSE, - rect->x, rect->y, - rect->width - 1, - rect->height - 1); - g_object_unref (gc); + if (view->dual_page) { + ev_page_cache_get_height_to_page (view->page_cache, page, zoom, NULL, &offset); + offset += (page / 2 + 1) * view->spacing + (page / 2) * (border.top + border.bottom); + } else { + ev_page_cache_get_height_to_page (view->page_cache, page, zoom, &offset, NULL); + offset += (page + 1) * view->spacing + page * (border.top + border.bottom); + } - gdk_color_free (fill_color_gdk); + *y_offset = offset; + return; } -static void -highlight_find_results (EvView *view) +static gboolean +get_page_extents (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border) { - EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); - int i, results; + GtkWidget *widget; + int width, height; - results = ev_document_find_get_n_results (find); + widget = GTK_WIDGET (view); + + /* Get the size of the page */ + ev_page_cache_get_size (view->page_cache, page, + view->scale, + &width, &height); + compute_border (view, width, height, border); + page_area->width = width + border->left + border->right; + page_area->height = height + border->top + border->bottom; + + if (view->presentation) { + page_area->x = (MAX (0, widget->allocation.width - width))/2; + page_area->y = (MAX (0, widget->allocation.height - height))/2; + } else if (view->continuous) { + gint max_width; + gint x, y; + + ev_page_cache_get_max_width (view->page_cache, view->scale, &max_width); + max_width = max_width + border->left + border->right; + /* Get the location of the bounding box */ + if (view->dual_page) { + x = view->spacing + (page % 2) * (max_width + view->spacing); + x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2; + if (page % 2 == 0) + x = x + (max_width - width - border->left - border->right); + } else { + x = view->spacing; + x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2; + } - for (i = 0; i < results; i++) { - GdkRectangle rectangle; - guchar alpha; - - alpha = (i == view->find_result) ? 0x90 : 0x20; - ev_document_find_get_result (find, i, &rectangle); - draw_rubberband (GTK_WIDGET (view), view->bin_window, - &rectangle, alpha); - } -} + get_page_y_offset (view, page, view->scale, &y); -static void -expose_bin_window (GtkWidget *widget, - GdkEventExpose *event) -{ - EvView *view = EV_VIEW (widget); - int x_offset, y_offset; + page_area->x = x; + page_area->y = y; + } else { + gint x, y; + if (view->dual_page) { + gint width_2, height_2; + gint max_width = width; + gint max_height = height; + GtkBorder overall_border; + gint other_page; + + other_page = page ^ 1; + + /* First, we get the bounding box of the two pages */ + if (other_page < ev_page_cache_get_n_pages (view->page_cache)) { + ev_page_cache_get_size (view->page_cache, + other_page, + view->scale, + &width_2, &height_2); + if (width_2 > width) + max_width = width_2; + if (height_2 > height) + max_height = height_2; + } + compute_border (view, max_width, max_height, &overall_border); - if (view->document == NULL) - return; + /* Find the offsets */ + x = view->spacing; + y = view->spacing; - x_offset = MAX (0, (widget->allocation.width - - widget->requisition.width) / 2); - y_offset = MAX (0, (widget->allocation.height - - widget->requisition.height) / 2); - gdk_draw_rectangle (view->bin_window, - widget->style->black_gc, - FALSE, - x_offset, - y_offset, - widget->requisition.width - 1, - widget->requisition.height - 1); - - ev_document_set_page_offset (view->document, - x_offset + 1, - y_offset + 1); - - LOG ("Render area %d %d %d %d", event->area.x, event->area.y, - event->area.width, event->area.height); - - ev_document_render (view->document, - event->area.x, event->area.y, - event->area.width, event->area.height); + /* Adjust for being the left or right page */ + if (page % 2 == 0) + x = x + max_width - width; + else + x = x + (max_width + overall_border.left + overall_border.right) + view->spacing; - if (EV_IS_DOCUMENT_FIND (view->document)) { - highlight_find_results (view); - } + y = y + (max_height - height)/2; - if (view->has_selection) { - draw_rubberband (widget, view->bin_window, - &view->selection, 0x40); - } -} + /* Adjust for extra allocation */ + x = x + MAX (0, widget->allocation.width - + ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2; + y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2; + } else { + x = view->spacing; + y = view->spacing; -static gboolean -ev_view_expose_event (GtkWidget *widget, - GdkEventExpose *event) -{ - EvView *view = EV_VIEW (widget); + /* Adjust for extra allocation */ + x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2; + y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom + view->spacing * 2))/2; + } - if (event->window == view->bin_window) - expose_bin_window (widget, event); - else - return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event); + page_area->x = x; + page_area->y = y; + } - return FALSE; + return TRUE; } -void -ev_view_select_all (EvView *ev_view) +static void +view_point_to_doc_point (EvView *view, + GdkPoint *view_point, + GdkRectangle *page_area, + double *doc_point_x, + double *doc_point_y) { - GtkWidget *widget = GTK_WIDGET (ev_view); - - g_return_if_fail (EV_IS_VIEW (ev_view)); - - ev_view->has_selection = TRUE; - ev_view->selection.x = ev_view->selection.y = 0; - ev_view->selection.width = widget->requisition.width; - ev_view->selection.height = widget->requisition.height; - - gtk_widget_queue_draw (widget); + *doc_point_x = (double) (view_point->x - page_area->x) / view->scale; + *doc_point_y = (double) (view_point->y - page_area->y) / view->scale; } -void -ev_view_copy (EvView *ev_view) +static void +view_rect_to_doc_rect (EvView *view, + GdkRectangle *view_rect, + GdkRectangle *page_area, + EvRectangle *doc_rect) { - GtkClipboard *clipboard; - char *text; - - text = ev_document_get_text (ev_view->document, &ev_view->selection); - clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), - GDK_SELECTION_CLIPBOARD); - gtk_clipboard_set_text (clipboard, text, -1); - g_free (text); + doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale; + doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale; + doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale; + doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale; } static void -ev_view_primary_get_cb (GtkClipboard *clipboard, - GtkSelectionData *selection_data, - guint info, - gpointer data) +doc_rect_to_view_rect (EvView *view, + int page, + EvRectangle *doc_rect, + GdkRectangle *view_rect) { - EvView *ev_view = EV_VIEW (data); - char *text; + GdkRectangle page_area; + GtkBorder border; + int width, height; - text = ev_document_get_text (ev_view->document, &ev_view->selection); - gtk_selection_data_set_text (selection_data, text, -1); + get_page_extents (view, page, &page_area, &border); + + width = doc_rect->x2 - doc_rect->x1; + height = doc_rect->y2 - doc_rect->y1; + view_rect->x = floor (doc_rect->x1 * view->scale) + page_area.x; + view_rect->y = floor (doc_rect->y1 * view->scale) + page_area.y; + view_rect->width = ceil (width * view->scale); + view_rect->height = ceil (height * view->scale); } static void -ev_view_primary_clear_cb (GtkClipboard *clipboard, - gpointer data) +find_page_at_location (EvView *view, + gdouble x, + gdouble y, + gint *page, + gint *x_offset, + gint *y_offset) { - EvView *ev_view = EV_VIEW (data); + int i; + + if (view->document == NULL) + return; - ev_view->has_selection = FALSE; + g_assert (page); + g_assert (x_offset); + g_assert (y_offset); + + for (i = view->start_page; i <= view->end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (! get_page_extents (view, i, &page_area, &border)) + continue; + + if ((x >= page_area.x + border.left) && + (x < page_area.x + page_area.width - border.right) && + (y >= page_area.y + border.top) && + (y < page_area.y + page_area.height - border.bottom)) { + *page = i; + *x_offset = x - (page_area.x + border.left); + *y_offset = y - (page_area.y + border.top); + return; + } + } + + *page = -1; } -static void -ev_view_update_primary_selection (EvView *ev_view) +static gboolean +location_in_text (EvView *view, + gdouble x, + gdouble y) { - GtkClipboard *clipboard; + GdkRegion *region; + gint page = -1; + gint x_offset = 0, y_offset = 0; - clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), - GDK_SELECTION_PRIMARY); + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); - if (ev_view->has_selection) { - if (!gtk_clipboard_set_with_owner (clipboard, - targets, - G_N_ELEMENTS (targets), - ev_view_primary_get_cb, - ev_view_primary_clear_cb, - G_OBJECT (ev_view))) - ev_view_primary_clear_cb (clipboard, ev_view); - } else { - if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) - gtk_clipboard_clear (clipboard); - } + if (page == -1) + return FALSE; + + region = ev_pixbuf_cache_get_text_mapping (view->pixbuf_cache, page); + + if (region) + return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale); + else + return FALSE; } -static gboolean -ev_view_button_press_event (GtkWidget *widget, - GdkEventButton *event) +/*** Hyperref ***/ +static EvLink * +get_link_at_location (EvView *view, + gdouble x, + gdouble y) { - EvView *view = EV_VIEW (widget); + gint page = -1; + gint x_offset = 0, y_offset = 0; + GList *link_mapping; - if (!GTK_WIDGET_HAS_FOCUS (widget)) { - gtk_widget_grab_focus (widget); - } + find_page_at_location (view, x, y, &page, &x_offset, &y_offset); - view->pressed_button = event->button; + if (page == -1) + return NULL; - switch (event->button) { - case 1: - if (view->has_selection) { - view->has_selection = FALSE; - gtk_widget_queue_draw (widget); - } + link_mapping = ev_pixbuf_cache_get_link_mapping (view->pixbuf_cache, page); + + if (link_mapping) + return ev_link_mapping_find (link_mapping, x_offset / view->scale, y_offset / view->scale); + else + return NULL; +} + +/* FIXME: standardize this sometime */ +static void +go_to_link (EvView *view, EvLink *link) +{ + EvLinkType type; + const char *uri; + int page; + + type = ev_link_get_link_type (link); - view->selection_start.x = event->x; - view->selection_start.y = event->y; + switch (type) { + case EV_LINK_TYPE_TITLE: + break; + case EV_LINK_TYPE_PAGE: + page = ev_link_get_page (link); + ev_page_cache_set_current_page (view->page_cache, page); + break; + case EV_LINK_TYPE_EXTERNAL_URI: + uri = ev_link_get_uri (link); + gnome_vfs_url_show (uri); break; } - - return TRUE; } static char * -status_message_from_link (EvLink *link) +status_message_from_link (EvView *view, EvLink *link) { EvLinkType type; - char *msg; - int page; + char *msg = NULL; + char *page_label; type = ev_link_get_link_type (link); - + switch (type) { case EV_LINK_TYPE_TITLE: - msg = g_strdup (ev_link_get_title (link)); + if (ev_link_get_title (link)) + msg = g_strdup (ev_link_get_title (link)); break; case EV_LINK_TYPE_PAGE: - page = ev_link_get_page (link); - msg = g_strdup_printf (_("Go to page %d"), page); + page_label = ev_page_cache_get_page_label (view->page_cache, ev_link_get_page (link)); + msg = g_strdup_printf (_("Go to page %s"), page_label); + g_free (page_label); break; case EV_LINK_TYPE_EXTERNAL_URI: msg = g_strdup (ev_link_get_uri (link)); break; default: - msg = NULL; + break; } return msg; } + +/*** GtkWidget implementation ***/ + static void -ev_view_set_status (EvView *view, const char *message) +ev_view_size_request_continuous_dual_page (EvView *view, + GtkRequisition *requisition) { - g_return_if_fail (EV_IS_VIEW (view)); + int max_width; + gint n_pages; + GtkBorder border; - if (message != view->status) { - g_free (view->status); - view->status = g_strdup (message); - g_object_notify (G_OBJECT (view), "status"); + ev_page_cache_get_max_width (view->page_cache, view->scale, &max_width); + compute_border (view, max_width, max_width, &border); + + n_pages = ev_page_cache_get_n_pages (view->page_cache) + 1; + + requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3); + get_page_y_offset (view, n_pages, view->scale, &requisition->height); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + /* FIXME: This could actually be set on one page docs or docs + * with a strange aspect ratio. */ + /* requisition->height = 1;*/ } } static void -ev_view_set_find_status (EvView *view, const char *message) +ev_view_size_request_continuous (EvView *view, + GtkRequisition *requisition) { - g_return_if_fail (EV_IS_VIEW (view)); - - g_free (view->find_status); - view->find_status = g_strdup (message); - g_object_notify (G_OBJECT (view), "find-status"); -} + int max_width; + int n_pages; + GtkBorder border; + + + ev_page_cache_get_max_width (view->page_cache, view->scale, &max_width); + n_pages = ev_page_cache_get_n_pages (view->page_cache); + compute_border (view, max_width, max_width, &border); + + requisition->width = max_width + (view->spacing * 2) + border.left + border.right; + get_page_y_offset (view, n_pages, view->scale, &requisition->height); + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + /* FIXME: This could actually be set on one page docs or docs + * with a strange aspect ratio. */ + /* requisition->height = 1;*/ + } +} static void -ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) +ev_view_size_request_dual_page (EvView *view, + GtkRequisition *requisition) { - GdkCursor *cursor = NULL; - GdkDisplay *display; - GtkWidget *widget; + GtkBorder border; + gint width, height; + + /* Find the largest of the two. */ + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + if (view->current_page + 1 < ev_page_cache_get_n_pages (view->page_cache)) { + gint width_2, height_2; + ev_page_cache_get_size (view->page_cache, + view->current_page + 1, + view->scale, + &width_2, &height_2); + if (width_2 > width) { + width = width_2; + height = height_2; + } + } + compute_border (view, width, height, &border); + + requisition->width = ((width + border.left + border.right) * 2) + + (view->spacing * 3); + requisition->height = (height + border.top + border.bottom) + + (view->spacing * 2); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + requisition->height = 1; + } +} - if (view->cursor == new_cursor) { - return; +static void +ev_view_size_request_single_page (EvView *view, + GtkRequisition *requisition) +{ + GtkBorder border; + gint width, height; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + view->scale, + &width, &height); + compute_border (view, width, height, &border); + + requisition->width = width + border.left + border.right + (2 * view->spacing); + requisition->height = height + border.top + border.bottom + (2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) { + requisition->width = 1; + requisition->height = height + border.top + border.bottom + (2 * view->spacing); + } else if (view->sizing_mode == EV_SIZING_BEST_FIT) { + requisition->width = 1; + requisition->height = 1; } +} - widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); - display = gtk_widget_get_display (widget); - view->cursor = new_cursor; +static void +ev_view_size_request (GtkWidget *widget, + GtkRequisition *requisition) +{ + EvView *view = EV_VIEW (widget); - switch (new_cursor) { - case EV_VIEW_CURSOR_NORMAL: - gdk_window_set_cursor (widget->window, NULL); - break; - case EV_VIEW_CURSOR_LINK: - cursor = gdk_cursor_new_for_display (display, GDK_HAND2); - break; - case EV_VIEW_CURSOR_WAIT: - cursor = gdk_cursor_new_for_display (display, GDK_WATCH); - break; + if (view->document == NULL) { + requisition->width = 1; + requisition->height = 1; + return; } - if (cursor) { - gdk_window_set_cursor (widget->window, cursor); - gdk_cursor_unref (cursor); - gdk_flush(); + if (view->presentation) { + requisition->width = 1; + requisition->height = 1; + return; } + + if (view->continuous && view->dual_page) + ev_view_size_request_continuous_dual_page (view, requisition); + else if (view->continuous) + ev_view_size_request_continuous (view, requisition); + else if (view->dual_page) + ev_view_size_request_dual_page (view, requisition); + else + ev_view_size_request_single_page (view, requisition); } -static gboolean -ev_view_motion_notify_event (GtkWidget *widget, - GdkEventMotion *event) +static void +ev_view_size_allocate (GtkWidget *widget, + GtkAllocation *allocation) { EvView *view = EV_VIEW (widget); - if (view->pressed_button > 0) { - view->has_selection = TRUE; - view->selection.x = MIN (view->selection_start.x, event->x); - view->selection.y = MIN (view->selection_start.y, event->y); - view->selection.width = ABS (view->selection_start.x - event->x) + 1; - view->selection.height = ABS (view->selection_start.y - event->y) + 1; + if (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT) { - gtk_widget_queue_draw (widget); - } else if (view->document) { - EvLink *link; + g_signal_emit (view, signals[SIGNAL_ZOOM_INVALID], 0); - link = ev_document_get_link (view->document, event->x, event->y); - if (link) { - char *msg; + ev_view_size_request (widget, &widget->requisition); + } - msg = status_message_from_link (link); - ev_view_set_status (view, msg); - ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); - g_free (msg); + view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL); + view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL); - g_object_unref (link); - } else { - ev_view_set_status (view, NULL); - if (view->cursor == EV_VIEW_CURSOR_LINK) { - ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); - } - } - } + view->pending_scroll = SCROLL_TO_KEEP_POSITION; + view->pending_resize = FALSE; - return TRUE; + if (view->document) + view_update_range_and_current_page (view); + + GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation); } -static gboolean -ev_view_button_release_event (GtkWidget *widget, - GdkEventButton *event) +static void +ev_view_realize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); + GdkWindowAttr attributes; - view->pressed_button = -1; + GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - if (view->has_selection) { - ev_view_update_primary_selection (view); - } else if (view->document) { - EvLink *link; - link = ev_document_get_link (view->document, - event->x, - event->y); - if (link) { - ev_view_go_to_link (view, link); - g_object_unref (link); - } - } + attributes.window_type = GDK_WINDOW_CHILD; + attributes.wclass = GDK_INPUT_OUTPUT; + attributes.visual = gtk_widget_get_visual (widget); + attributes.colormap = gtk_widget_get_colormap (widget); - return FALSE; + attributes.x = widget->allocation.x; + attributes.y = widget->allocation.y; + attributes.width = widget->allocation.width; + attributes.height = widget->allocation.height; + attributes.event_mask = GDK_EXPOSURE_MASK | + GDK_BUTTON_PRESS_MASK | + GDK_BUTTON_RELEASE_MASK | + GDK_SCROLL_MASK | + GDK_KEY_PRESS_MASK | + GDK_POINTER_MOTION_MASK | + GDK_LEAVE_NOTIFY_MASK; + + widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), + &attributes, + GDK_WA_X | GDK_WA_Y | + GDK_WA_COLORMAP | + GDK_WA_VISUAL); + gdk_window_set_user_data (widget->window, widget); + widget->style = gtk_style_attach (widget->style, widget->window); + + if (view->presentation) + gdk_window_set_background (widget->window, &widget->style->black); + else + gdk_window_set_background (widget->window, &widget->style->mid [GTK_STATE_NORMAL]); } static void -on_adjustment_value_changed (GtkAdjustment *adjustment, - EvView *view) +ev_view_unrealize (GtkWidget *widget) { - view_update_adjustments (view); + GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (widget); } -static void -set_scroll_adjustment (EvView *view, - GtkOrientation orientation, - GtkAdjustment *adjustment) +static gboolean +ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event) { - GtkAdjustment **to_set; + EvView *view = EV_VIEW (widget); + + if ((event->state & GDK_CONTROL_MASK) != 0) { + + ev_view_set_sizing_mode (view, EV_SIZING_FREE); + + if (event->direction == GDK_SCROLL_UP || + event->direction == GDK_SCROLL_LEFT) { + if (ev_view_can_zoom_in (view)) { + ev_view_zoom_in (view); + } + } else { + if (ev_view_can_zoom_out (view)) { + ev_view_zoom_out (view); + } + } + return TRUE; + } - if (orientation == GTK_ORIENTATION_HORIZONTAL) - to_set = &view->hadjustment; - else - to_set = &view->vadjustment; - - if (*to_set != adjustment) { - if (*to_set) { - g_signal_handlers_disconnect_by_func (*to_set, - (gpointer) on_adjustment_value_changed, - view); - g_object_unref (*to_set); + if ((event->state & GDK_SHIFT_MASK) != 0) { + if (event->direction == GDK_SCROLL_UP) + event->direction = GDK_SCROLL_LEFT; + if (event->direction == GDK_SCROLL_DOWN) + event->direction = GDK_SCROLL_RIGHT; + } + + return FALSE; +} + +static EvViewSelection * +find_selection_for_page (EvView *view, + gint page) +{ + GList *list; + + for (list = view->selection_info.selections; list != NULL; list = list->next) { + EvViewSelection *selection; + + selection = (EvViewSelection *) list->data; + + if (selection->page == page) + return selection; + } + + return NULL; +} + +static gboolean +ev_view_expose_event (GtkWidget *widget, + GdkEventExpose *event) +{ + EvView *view = EV_VIEW (widget); + int i; + + if (view->document == NULL) + return FALSE; + + for (i = view->start_page; i <= view->end_page; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (!get_page_extents (view, i, &page_area, &border)) + continue; + + page_area.x -= view->scroll_x; + page_area.y -= view->scroll_y; + + draw_one_page (view, i, &page_area, &border, &(event->area)); + + if (EV_IS_DOCUMENT_FIND (view->document)) + highlight_find_results (view, i); + } + + return FALSE; +} + +static gboolean +ev_view_button_press_event (GtkWidget *widget, + GdkEventButton *event) +{ + EvView *view = EV_VIEW (widget); + + if (!GTK_WIDGET_HAS_FOCUS (widget)) { + gtk_widget_grab_focus (widget); + } + + view->pressed_button = event->button; + + switch (event->button) { + case 1: + if (view->selection_info.selections) { + clear_selection (view); + gtk_widget_queue_draw (widget); + } + + view->selection_info.start.x = event->x + view->scroll_x; + view->selection_info.start.y = event->y + view->scroll_y; + return TRUE; + case 2: + /* use root coordinates as reference point because + * scrolling changes window relative coordinates */ + view->drag_info.start.x = event->x_root; + view->drag_info.start.y = event->y_root; + view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment); + view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment); + + ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG); + + return TRUE; + } + + return FALSE; +} + +static gboolean +ev_view_motion_notify_event (GtkWidget *widget, + GdkEventMotion *event) +{ + EvView *view = EV_VIEW (widget); + + if (!view->document) + return FALSE; + + if (view->pressed_button == 1) { + GdkPoint point; + + view->selection_info.in_selection = TRUE; + point.x = event->x + view->scroll_x; + point.y = event->y + view->scroll_y; + compute_selections (view, &view->selection_info.start, &point); + + return TRUE; + } else if (view->pressed_button == 2) { + if (!view->drag_info.in_drag) { + gboolean start; + + start = gtk_drag_check_threshold (widget, + view->drag_info.start.x, + view->drag_info.start.y, + event->x_root, + event->y_root); + view->drag_info.in_drag = start; } - *to_set = adjustment; - view_set_adjustment_values (view, orientation); + if (view->drag_info.in_drag) { + int dx, dy; + gdouble dhadj_value, dvadj_value; - if (*to_set) { - g_object_ref (*to_set); - g_signal_connect (*to_set, "value_changed", - G_CALLBACK (on_adjustment_value_changed), view); + dx = event->x_root - view->drag_info.start.x; + dy = event->y_root - view->drag_info.start.y; + + dhadj_value = view->hadjustment->page_size * + (gdouble)dx / widget->allocation.width; + dvadj_value = view->vadjustment->page_size * + (gdouble)dy / widget->allocation.height; + + /* clamp scrolling to visible area */ + gtk_adjustment_set_value (view->hadjustment, + MIN(view->drag_info.hadj - dhadj_value, + view->hadjustment->upper - + view->hadjustment->page_size)); + gtk_adjustment_set_value (view->vadjustment, + MIN(view->drag_info.vadj - dvadj_value, + view->vadjustment->upper - + view->vadjustment->page_size)); + + return TRUE; + } + } else if (view->pressed_button <= 0) { + EvLink *link; + + link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y); + if (link) { + char *msg; + + msg = status_message_from_link (view, link); + ev_view_set_status (view, msg); + ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK); + g_free (msg); + } else if (location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y)) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM); + } else { + ev_view_set_status (view, NULL); + if (view->cursor == EV_VIEW_CURSOR_LINK || + view->cursor == EV_VIEW_CURSOR_IBEAM) + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); } + return TRUE; } + + return FALSE; } -static void -ev_view_set_scroll_adjustments (EvView *view, - GtkAdjustment *hadjustment, - GtkAdjustment *vadjustment) +static gboolean +ev_view_button_release_event (GtkWidget *widget, + GdkEventButton *event) { - set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment); - set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment); + EvView *view = EV_VIEW (widget); + + if (view->pressed_button == 2) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } + + view->pressed_button = -1; + view->drag_info.in_drag = FALSE; + + if (view->selection_info.selections) { + ev_view_update_primary_selection (view); + } else if (view->document) { + EvLink *link; + + link = get_link_at_location (view, event->x + view->scroll_x, event->y + view->scroll_y); + if (link) { + go_to_link (view, link); + } + } + + return FALSE; +} + +/*** Drawing ***/ - view_update_adjustments (view); +static guint32 +ev_gdk_color_to_rgb (const GdkColor *color) +{ + guint32 result; + result = (0xff0000 | (color->red & 0xff00)); + result <<= 8; + result |= ((color->green & 0xff00) | (color->blue >> 8)); + return result; } static void -add_scroll_binding (GtkBindingSet *binding_set, - guint keyval, - GtkScrollType scroll, - gboolean horizontal) +draw_rubberband (GtkWidget *widget, GdkWindow *window, + const GdkRectangle *rect, guchar alpha) { - guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left; - - gtk_binding_entry_add_signal (binding_set, keyval, 0, - "scroll_view", 2, - GTK_TYPE_SCROLL_TYPE, scroll, - G_TYPE_BOOLEAN, horizontal); - gtk_binding_entry_add_signal (binding_set, keypad_keyval, 0, - "scroll_view", 2, - GTK_TYPE_SCROLL_TYPE, scroll, - G_TYPE_BOOLEAN, horizontal); + GdkGC *gc; + GdkPixbuf *pixbuf; + GdkColor *fill_color_gdk; + guint fill_color; + + fill_color_gdk = gdk_color_copy (>K_WIDGET (widget)->style->base[GTK_STATE_SELECTED]); + fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha; + + pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, + rect->width, rect->height); + gdk_pixbuf_fill (pixbuf, fill_color); + + gdk_draw_pixbuf (window, NULL, pixbuf, + 0, 0, + rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, + rect->width, rect->height, + GDK_RGB_DITHER_NONE, + 0, 0); + + g_object_unref (pixbuf); + + gc = gdk_gc_new (window); + gdk_gc_set_rgb_fg_color (gc, fill_color_gdk); + gdk_draw_rectangle (window, gc, FALSE, + rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y, + rect->width - 1, + rect->height - 1); + g_object_unref (gc); + + gdk_color_free (fill_color_gdk); } + static void -ev_view_scroll_view (EvView *view, - GtkScrollType scroll, - gboolean horizontal) -{ - if (scroll == GTK_SCROLL_PAGE_BACKWARD) { - ev_view_set_page (view, ev_view_get_page (view) - 1); - } else if (scroll == GTK_SCROLL_PAGE_FORWARD) { - ev_view_set_page (view, ev_view_get_page (view) + 1); - } else { - GtkAdjustment *adjustment; - double value; +highlight_find_results (EvView *view, int page) +{ + EvDocumentFind *find; + int i, results = 0; + + g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document)); + + find = EV_DOCUMENT_FIND (view->document); + + results = ev_document_find_get_n_results (find, page); + + for (i = 0; i < results; i++) { + EvRectangle rectangle; + GdkRectangle view_rectangle; + guchar alpha; - if (horizontal) { - adjustment = view->hadjustment; + if (i == view->find_result && page == view->find_page) { + alpha = 0x90; } else { - adjustment = view->vadjustment; + alpha = 0x20; } - value = adjustment->value; + ev_document_find_get_result (find, page, + i, &rectangle); + doc_rect_to_view_rect (view, page, &rectangle, &view_rectangle); + draw_rubberband (GTK_WIDGET (view), GTK_WIDGET(view)->window, + &view_rectangle, alpha); + } +} - switch (scroll) { - case GTK_SCROLL_STEP_BACKWARD: - value -= adjustment->step_increment; - break; - case GTK_SCROLL_STEP_FORWARD: - value += adjustment->step_increment; - break; - default: - break; +static void +draw_one_page (EvView *view, + gint page, + GdkRectangle *page_area, + GtkBorder *border, + GdkRectangle *expose_area) +{ + gint width, height; + GdkPixbuf *current_pixbuf; + GdkRectangle overlap; + GdkRectangle real_page_area; + EvViewSelection *selection; + + g_assert (view->document); + if (! gdk_rectangle_intersect (page_area, expose_area, &overlap)) + return; + + selection = find_selection_for_page (view, page); + ev_page_cache_get_size (view->page_cache, + page, view->scale, + &width, &height); + /* Render the document itself */ + real_page_area = *page_area; + + real_page_area.x += border->left; + real_page_area.y += border->top; + real_page_area.width -= (border->left + border->right); + real_page_area.height -= (border->top + border->bottom); + + ev_document_misc_paint_one_page (GTK_WIDGET(view)->window, + GTK_WIDGET (view), + page_area, border); + + if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) { + GdkPixbuf *selection_pixbuf = NULL; + GdkPixbuf *scaled_image; + GdkPixbuf *scaled_selection; + + current_pixbuf = ev_pixbuf_cache_get_pixbuf (view->pixbuf_cache, page); + + /* Get the selection pixbuf iff we have something to draw */ + if (current_pixbuf && view->selection_mode == EV_VIEW_SELECTION_TEXT && selection) + selection_pixbuf = ev_pixbuf_cache_get_selection_pixbuf (view->pixbuf_cache, + page, + view->scale); + + if (current_pixbuf == NULL) + scaled_image = NULL; + else if (width == gdk_pixbuf_get_width (current_pixbuf) && + height == gdk_pixbuf_get_height (current_pixbuf)) + scaled_image = g_object_ref (current_pixbuf); + else + /* FIXME: We don't want to scale the whole area, just the right + * area of it */ + scaled_image = gdk_pixbuf_scale_simple (current_pixbuf, + width, height, + GDK_INTERP_NEAREST); + + if (selection_pixbuf == NULL) + scaled_selection = NULL; + else if (width == gdk_pixbuf_get_width (selection_pixbuf) && + height == gdk_pixbuf_get_height (selection_pixbuf)) + scaled_selection = g_object_ref (selection_pixbuf); + else + /* FIXME: We don't want to scale the whole area, just the right + * area of it */ + scaled_selection = gdk_pixbuf_scale_simple (selection_pixbuf, + width, height, + GDK_INTERP_NEAREST); + + if (scaled_image) { + gdk_draw_pixbuf (GTK_WIDGET(view)->window, + GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL], + scaled_image, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y, + overlap.x, overlap.y, + overlap.width, overlap.height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + g_object_unref (scaled_image); } - value = CLAMP (value, adjustment->lower, - adjustment->upper - adjustment->page_size); + if (scaled_selection) { + gdk_draw_pixbuf (GTK_WIDGET(view)->window, + GTK_WIDGET (view)->style->fg_gc[GTK_STATE_NORMAL], + scaled_selection, + overlap.x - real_page_area.x, + overlap.y - real_page_area.y, + overlap.x, overlap.y, + overlap.width, overlap.height, + GDK_RGB_DITHER_NORMAL, + 0, 0); + g_object_unref (scaled_selection); + } + } +} + +/*** GObject functions ***/ - gtk_adjustment_set_value (adjustment, value); +static void +ev_view_finalize (GObject *object) +{ + EvView *view = EV_VIEW (object); + + LOG ("Finalize"); + + g_free (view->status); + g_free (view->find_status); + + clear_selection (view); + + G_OBJECT_CLASS (ev_view_parent_class)->finalize (object); +} + +static void +ev_view_destroy (GtkObject *object) +{ + EvView *view = EV_VIEW (object); + + if (view->document) { + g_object_unref (view->document); + view->document = NULL; } + if (view->pixbuf_cache) { + g_object_unref (view->pixbuf_cache); + view->pixbuf_cache = NULL; + } + ev_view_set_scroll_adjustments (view, NULL, NULL); + + GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object); } static void -ev_view_set_property (GObject *object, - guint prop_id, +ev_view_set_property (GObject *object, + guint prop_id, const GValue *value, - GParamSpec *pspec) + GParamSpec *pspec) { + EvView *view = EV_VIEW (object); + switch (prop_id) { - /* Read only */ - case PROP_STATUS: - case PROP_FIND_STATUS: - break; + case PROP_CONTINUOUS: + ev_view_set_continuous (view, g_value_get_boolean (value)); + break; + case PROP_DUAL_PAGE: + ev_view_set_dual_page (view, g_value_get_boolean (value)); + break; + case PROP_FULLSCREEN: + ev_view_set_fullscreen (view, g_value_get_boolean (value)); + break; + case PROP_PRESENTATION: + ev_view_set_presentation (view, g_value_get_boolean (value)); + break; + case PROP_SIZING_MODE: + ev_view_set_sizing_mode (view, g_value_get_enum (value)); + break; + case PROP_ZOOM: + ev_view_set_zoom (view, g_value_get_double (value), FALSE); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } @@ -819,12 +1744,32 @@ ev_view_get_property (GObject *object, switch (prop_id) { - case PROP_STATUS: - g_value_set_string (value, view->status); - break; - case PROP_FIND_STATUS: - g_value_set_string (value, view->status); - break; + case PROP_STATUS: + g_value_set_string (value, view->status); + break; + case PROP_FIND_STATUS: + g_value_set_string (value, view->status); + break; + case PROP_CONTINUOUS: + g_value_set_boolean (value, view->continuous); + break; + case PROP_DUAL_PAGE: + g_value_set_boolean (value, view->dual_page); + break; + case PROP_FULLSCREEN: + g_value_set_boolean (value, view->fullscreen); + break; + case PROP_PRESENTATION: + g_value_set_boolean (value, view->presentation); + break; + case PROP_SIZING_MODE: + g_value_set_enum (value, view->sizing_mode); + break; + case PROP_ZOOM: + g_value_set_double (value, view->scale); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } @@ -848,37 +1793,40 @@ ev_view_class_init (EvViewClass *class) widget_class->size_allocate = ev_view_size_allocate; widget_class->realize = ev_view_realize; widget_class->unrealize = ev_view_unrealize; + widget_class->scroll_event = ev_view_scroll_event; gtk_object_class->destroy = ev_view_destroy; class->set_scroll_adjustments = ev_view_set_scroll_adjustments; - class->scroll_view = ev_view_scroll_view; - - widget_class->set_scroll_adjustments_signal = g_signal_new ("set-scroll-adjustments", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments), - NULL, NULL, - ev_marshal_VOID__OBJECT_OBJECT, - G_TYPE_NONE, 2, - GTK_TYPE_ADJUSTMENT, - GTK_TYPE_ADJUSTMENT); - page_changed_signal = g_signal_new ("page-changed", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (EvViewClass, page_changed), - NULL, NULL, - ev_marshal_VOID__NONE, - G_TYPE_NONE, 0); - - g_signal_new ("scroll_view", - G_TYPE_FROM_CLASS (object_class), - G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, - G_STRUCT_OFFSET (EvViewClass, scroll_view), - NULL, NULL, - ev_marshal_VOID__ENUM_BOOLEAN, - G_TYPE_NONE, 2, - GTK_TYPE_SCROLL_TYPE, - G_TYPE_BOOLEAN); + class->binding_activated = ev_view_binding_activated; + + widget_class->set_scroll_adjustments_signal = + g_signal_new ("set-scroll-adjustments", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, set_scroll_adjustments), + NULL, NULL, + ev_marshal_VOID__OBJECT_OBJECT, + G_TYPE_NONE, 2, + GTK_TYPE_ADJUSTMENT, + GTK_TYPE_ADJUSTMENT); + + signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, binding_activated), + NULL, NULL, + ev_marshal_VOID__ENUM_BOOLEAN, + G_TYPE_NONE, 2, + GTK_TYPE_SCROLL_TYPE, + G_TYPE_BOOLEAN); + + signals[SIGNAL_ZOOM_INVALID] = g_signal_new ("zoom-invalid", + G_TYPE_FROM_CLASS (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvViewClass, zoom_invalid), + NULL, NULL, + ev_marshal_VOID__VOID, + G_TYPE_NONE, 0, G_TYPE_NONE); g_object_class_install_property (object_class, PROP_STATUS, @@ -889,22 +1837,68 @@ ev_view_class_init (EvViewClass *class) G_PARAM_READABLE)); g_object_class_install_property (object_class, - PROP_STATUS, + PROP_FIND_STATUS, g_param_spec_string ("find-status", "Find Status Message", "The find status message", NULL, G_PARAM_READABLE)); - binding_set = gtk_binding_set_by_class (class); + g_object_class_install_property (object_class, + PROP_CONTINUOUS, + g_param_spec_boolean ("continuous", + "Continuous", + "Continuous scrolling mode", + TRUE, + G_PARAM_READWRITE)); + + g_object_class_install_property (object_class, + PROP_DUAL_PAGE, + g_param_spec_boolean ("dual-page", + "Dual Page", + "Two pages visible at once", + FALSE, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_FULLSCREEN, + g_param_spec_boolean ("fullscreen", + "Full Screen", + "Draw page in a fullscreen fashion", + FALSE, + G_PARAM_READWRITE)); + g_object_class_install_property (object_class, + PROP_PRESENTATION, + g_param_spec_boolean ("presentation", + "Presentation", + "Draw page in presentation mode", + TRUE, + G_PARAM_READWRITE)); + + g_object_class_install_property (object_class, + PROP_SIZING_MODE, + g_param_spec_enum ("sizing-mode", + "Sizing Mode", + "Sizing Mode", + EV_TYPE_SIZING_MODE, + EV_SIZING_FIT_WIDTH, + G_PARAM_READWRITE)); - add_scroll_binding (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE); - add_scroll_binding (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE); - add_scroll_binding (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE); - add_scroll_binding (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE); + g_object_class_install_property (object_class, + PROP_ZOOM, + g_param_spec_double ("zoom", + "Zoom factor", + "Zoom factor", + MIN_SCALE, + MAX_SCALE, + 1.0, + G_PARAM_READWRITE)); + + binding_set = gtk_binding_set_by_class (class); - add_scroll_binding (binding_set, GDK_Page_Up, GTK_SCROLL_PAGE_BACKWARD, FALSE); - add_scroll_binding (binding_set, GDK_Page_Down, GTK_SCROLL_PAGE_FORWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Left, GTK_SCROLL_STEP_BACKWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Right, GTK_SCROLL_STEP_FORWARD, TRUE); + add_scroll_binding_keypad (binding_set, GDK_Up, GTK_SCROLL_STEP_BACKWARD, FALSE); + add_scroll_binding_keypad (binding_set, GDK_Down, GTK_SCROLL_STEP_FORWARD, FALSE); } static void @@ -912,195 +1906,125 @@ ev_view_init (EvView *view) { GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); + view->spacing = 5; view->scale = 1.0; + view->current_page = 0; view->pressed_button = -1; view->cursor = EV_VIEW_CURSOR_NORMAL; + view->drag_info.in_drag = FALSE; + view->selection_info.in_selection = FALSE; + + view->selection_mode = EV_VIEW_SELECTION_TEXT; + view->continuous = TRUE; + view->dual_page = FALSE; + view->presentation = FALSE; + view->fullscreen = FALSE; + view->sizing_mode = EV_SIZING_FIT_WIDTH; + view->pending_scroll = SCROLL_TO_KEEP_POSITION; } +/*** Callbacks ***/ + static void -update_find_status_message (EvView *view) +find_changed_cb (EvDocument *document, int page, EvView *view) { - char *message; + jump_to_find_page (view); + jump_to_find_result (view); + update_find_status_message (view); - if (ev_document_get_page (view->document) == view->find_page) { - int results; + if (view->current_page == page) + gtk_widget_queue_draw (GTK_WIDGET (view)); +} - results = ev_document_find_get_n_results - (EV_DOCUMENT_FIND (view->document)); - - message = g_strdup_printf (_("%d found on this page"), - results); - } else { - double percent; - - percent = ev_document_find_get_progress - (EV_DOCUMENT_FIND (view->document)); - - if (percent >= (1.0 - 1e-10)) { - message = g_strdup (_("Not found")); - } else { - message = g_strdup_printf (_("%3d%% remaining to search"), - (int) ((1.0 - percent) * 100)); - } - - } - - ev_view_set_find_status (view, message); - g_free (message); -} +static void +job_finished_cb (EvPixbufCache *pixbuf_cache, + EvView *view) +{ + gtk_widget_queue_draw (GTK_WIDGET (view)); +} static void -set_document_page (EvView *view, int new_page) +page_changed_cb (EvPageCache *page_cache, + int new_page, + EvView *view) { - int page; - int pages; + if (view->current_page != new_page) { - pages = ev_document_get_n_pages (view->document); - page = CLAMP (new_page, 1, pages); - - if (view->document) { - int old_page = ev_document_get_page (view->document); - int old_width, old_height; - - ev_document_get_page_size (view->document, - -1, - &old_width, &old_height); - - if (old_page != page) { - ev_view_set_cursor (view, EV_VIEW_CURSOR_WAIT); - ev_document_set_page (view->document, page); - } - - if (old_page != ev_document_get_page (view->document)) { - int width, height; - - g_signal_emit (view, page_changed_signal, 0); - - view->has_selection = FALSE; - ev_document_get_page_size (view->document, - -1, - &width, &height); - if (width != old_width || height != old_height) - gtk_widget_queue_resize (GTK_WIDGET (view)); - - gtk_adjustment_set_value (view->vadjustment, - view->vadjustment->lower); - } - - view->find_page = page; - view->find_result = 0; + view->current_page = new_page; + view->pending_scroll = SCROLL_TO_CURRENT_PAGE; + gtk_widget_queue_resize (GTK_WIDGET (view)); if (EV_IS_DOCUMENT_FIND (view->document)) { + view->find_page = new_page; + view->find_result = 0; update_find_status_message (view); } } } -#define MARGIN 5 - -static void -ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) +static void on_adjustment_value_changed (GtkAdjustment *adjustment, + EvView *view) { - GtkWidget *widget = GTK_WIDGET (view); - GtkAdjustment *adjustment; - int value; + int dx = 0, dy = 0; - adjustment = view->vadjustment; + if (! GTK_WIDGET_REALIZED (view)) + return; - if (rect->y < adjustment->value) { - value = MAX (adjustment->lower, rect->y - MARGIN); - gtk_adjustment_set_value (view->vadjustment, value); - } else if (rect->y + rect->height > - adjustment->value + widget->allocation.height) { - value = MIN (adjustment->upper, rect->y + rect->height - - widget->allocation.height + MARGIN); - gtk_adjustment_set_value (view->vadjustment, value); + if (view->hadjustment) { + dx = view->scroll_x - (int) view->hadjustment->value; + view->scroll_x = (int) view->hadjustment->value; + } else { + view->scroll_x = 0; } - adjustment = view->hadjustment; - - if (rect->x < adjustment->value) { - value = MAX (adjustment->lower, rect->x - MARGIN); - gtk_adjustment_set_value (view->hadjustment, value); - } else if (rect->x + rect->height > - adjustment->value + widget->allocation.width) { - value = MIN (adjustment->upper, rect->x + rect->width - - widget->allocation.width + MARGIN); - gtk_adjustment_set_value (view->hadjustment, value); + if (view->vadjustment) { + dy = view->scroll_y - (int) view->vadjustment->value; + view->scroll_y = (int) view->vadjustment->value; + } else { + view->scroll_y = 0; } -} -static void -jump_to_find_result (EvView *view) -{ - EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); - GdkRectangle rect; - int n_results; - n_results = ev_document_find_get_n_results (find); + if (view->pending_resize) + gtk_widget_queue_draw (GTK_WIDGET (view)); + else + gdk_window_scroll (GTK_WIDGET (view)->window, dx, dy); + - if (n_results > view->find_result) { - ev_document_find_get_result - (find, view->find_result, &rect); - ensure_rectangle_is_visible (view, &rect); - } + if (view->document) + view_update_range_and_current_page (view); } -static void -jump_to_find_page (EvView *view) +GtkWidget* +ev_view_new (void) { - int n_pages, i; - - n_pages = ev_document_get_n_pages (view->document); - - for (i = 0; i <= n_pages; i++) { - int has_results; - int page; + GtkWidget *view; - page = i + view->find_page; - if (page > n_pages) { - page = page - n_pages; - } + view = g_object_new (EV_TYPE_VIEW, NULL); - has_results = ev_document_find_page_has_results - (EV_DOCUMENT_FIND (view->document), page); - if (has_results == -1) { - view->find_page = page; - break; - } else if (has_results == 1) { - set_document_page (view, page); - jump_to_find_result (view); - break; - } - } + return view; } static void -find_changed_cb (EvDocument *document, int page, EvView *view) +setup_caches (EvView *view) { - jump_to_find_page (view); - jump_to_find_result (view); - update_find_status_message (view); - - if (ev_document_get_page (document) == page) { - gtk_widget_queue_draw (GTK_WIDGET (view)); - } + view->page_cache = ev_page_cache_get (view->document); + g_signal_connect (view->page_cache, "page-changed", G_CALLBACK (page_changed_cb), view); + view->pixbuf_cache = ev_pixbuf_cache_new (view->document); + g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view); } static void -document_changed_callback (EvDocument *document, - EvView *view) +clear_caches (EvView *view) { - gtk_widget_queue_draw (GTK_WIDGET (view)); - ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); -} + if (view->pixbuf_cache) { + g_object_unref (view->pixbuf_cache); + view->pixbuf_cache = NULL; + } -/*** Public API ***/ - -GtkWidget* -ev_view_new (void) -{ - return g_object_new (EV_TYPE_VIEW, NULL); + if (view->document) { + ev_page_cache_clear (view->document); + } } void @@ -1110,14 +2034,19 @@ ev_view_set_document (EvView *view, g_return_if_fail (EV_IS_VIEW (view)); if (document != view->document) { + clear_caches (view); + if (view->document) { - g_signal_handlers_disconnect_by_func - (view->document, find_changed_cb, view); + g_signal_handlers_disconnect_by_func (view->document, + find_changed_cb, + view); g_object_unref (view->document); + view->page_cache = NULL; + } view->document = document; - view->find_page = 1; + view->find_page = 0; view->find_result = 0; if (view->document) { @@ -1128,236 +2057,1084 @@ ev_view_set_document (EvView *view, G_CALLBACK (find_changed_cb), view); } - g_signal_connect (view->document, - "changed", - G_CALLBACK (document_changed_callback), - view); + + setup_caches (view); } - if (GTK_WIDGET_REALIZED (view)) - ev_document_set_target (view->document, view->bin_window); - gtk_widget_queue_resize (GTK_WIDGET (view)); - - g_signal_emit (view, page_changed_signal, 0); } } -static void -go_to_link (EvView *view, EvLink *link) +/*** Zoom and sizing mode ***/ + +#define EPSILON 0.0000001 +void +ev_view_set_zoom (EvView *view, + double factor, + gboolean relative) { - EvLinkType type; - const char *uri; - int page; + double scale; - type = ev_link_get_link_type (link); - - switch (type) { - case EV_LINK_TYPE_TITLE: - break; - case EV_LINK_TYPE_PAGE: - page = ev_link_get_page (link); - set_document_page (view, page); - break; - case EV_LINK_TYPE_EXTERNAL_URI: - uri = ev_link_get_uri (link); - gnome_vfs_url_show (uri); - break; - } + if (relative) + scale = view->scale * factor; + else + scale = factor; + + scale = CLAMP (scale, MIN_SCALE, MAX_SCALE); + + if (ABS (view->scale - scale) < EPSILON) + return; + + view->scale = scale; + view->pending_resize = TRUE; + + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "zoom"); } -void -ev_view_go_to_link (EvView *view, EvLink *link) +double +ev_view_get_zoom (EvView *view) { - go_to_link (view, link); + return view->scale; } -void -ev_view_set_page (EvView *view, - int page) +gboolean +ev_view_get_continuous (EvView *view) { - g_return_if_fail (EV_IS_VIEW (view)); + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); - set_document_page (view, page); + return view->continuous; } -int -ev_view_get_page (EvView *view) +void +ev_view_set_continuous (EvView *view, + gboolean continuous) { - if (view->document) - return ev_document_get_page (view->document); - else - return 1; -} + g_return_if_fail (EV_IS_VIEW (view)); -#define ZOOM_IN_FACTOR 1.2 -#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + continuous = continuous != FALSE; -#define MIN_SCALE 0.05409 -#define MAX_SCALE 18.4884 + if (view->continuous != continuous) { + view->continuous = continuous; + view->pending_scroll = SCROLL_TO_CURRENT_PAGE; + gtk_widget_queue_resize (GTK_WIDGET (view)); + } -static void -ev_view_zoom (EvView *view, - double factor, - gboolean relative) + g_object_notify (G_OBJECT (view), "continuous"); +} + +gboolean +ev_view_get_dual_page (EvView *view) { - double scale; + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); - if (relative) - scale = view->scale * factor; - else - scale = factor; + return view->dual_page; +} + +void +ev_view_set_dual_page (EvView *view, + gboolean dual_page) +{ + g_return_if_fail (EV_IS_VIEW (view)); - view->scale = CLAMP (scale, MIN_SCALE, MAX_SCALE); + dual_page = dual_page != FALSE; - ev_document_set_scale (view->document, view->scale); + if (view->dual_page == dual_page) + return; + view->pending_scroll = SCROLL_TO_CURRENT_PAGE; + view->dual_page = dual_page; + /* FIXME: if we're keeping the pixbuf cache around, we should extend the + * preload_cache_size to be 2 if dual_page is set. + */ gtk_widget_queue_resize (GTK_WIDGET (view)); -} -void -ev_view_zoom_in (EvView *view) -{ - ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE); + g_object_notify (G_OBJECT (view), "dual-page"); } void -ev_view_zoom_out (EvView *view) +ev_view_set_fullscreen (EvView *view, + gboolean fullscreen) { - ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE); + g_return_if_fail (EV_IS_VIEW (view)); + + fullscreen = fullscreen != FALSE; + + if (view->fullscreen == fullscreen) + return; + + view->fullscreen = fullscreen; + gtk_widget_queue_resize (GTK_WIDGET (view)); + + g_object_notify (G_OBJECT (view), "fullscreen"); } -void -ev_view_normal_size (EvView *view) +gboolean +ev_view_get_fullscreen (EvView *view) { - ev_view_zoom (view, 1.0, FALSE); + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); + + return view->fullscreen; } -/* Unfortunately this is not idempotent (!) (numerical stability - * issues because width and height are rounded) - * - * One more reason to make this a toggle and not a command */ void -ev_view_best_fit (EvView *view, int allocation_width, int allocation_height) +ev_view_set_presentation (EvView *view, + gboolean presentation) { - double scale; - int available_width, available_height; - int width, height; + g_return_if_fail (EV_IS_VIEW (view)); - width = height = 0; - /* This is the bad part. You could make it stable by doing - * ev_document_set_scale 1.0. But at least with pdf this means - * redrawing the whole page */ - ev_document_get_page_size (view->document, -1, &width, &height); + presentation = presentation != FALSE; - LOG ("Best fit %d %d", allocation_width, allocation_height); + if (view->presentation == presentation) + return; - scale = 1.0; - if (width != 0 && height != 0) { - double scale_w, scale_h; + view->presentation = presentation; + view->pending_scroll = SCROLL_TO_CURRENT_PAGE; + gtk_widget_queue_resize (GTK_WIDGET (view)); - available_width = MAX (1, allocation_width - 2); /* 1 px border left and right */ - available_height = MAX (1, allocation_height - 2); /* 1 px border above and below */ + if (GTK_WIDGET_REALIZED (view)) { + if (view->presentation) + gdk_window_set_background (GTK_WIDGET(view)->window, + >K_WIDGET (view)->style->black); + else + gdk_window_set_background (GTK_WIDGET(view)->window, + >K_WIDGET (view)->style->mid [GTK_STATE_NORMAL]); + } - scale_w = (double)available_width * view->scale / (width + 0.5); - scale_h = (double)available_height * view->scale / (height + 0.5); - scale = (scale_w < scale_h) ? scale_w : scale_h; - } + g_object_notify (G_OBJECT (view), "presentation"); +} + +gboolean +ev_view_get_presentation (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), FALSE); - ev_view_zoom (view, scale, FALSE); + return view->presentation; } void -ev_view_fit_width (EvView *view, int allocation_width, int allocation_height, - int vsb_width) +ev_view_set_sizing_mode (EvView *view, + EvSizingMode sizing_mode) { - int available_width, available_height; - int width, height; - double scale = 1.0; + g_return_if_fail (EV_IS_VIEW (view)); - width = height = 0; - ev_document_get_page_size (view->document, -1, &width, &height); + if (view->sizing_mode == sizing_mode) + return; - scale = 1.0; - if (width != 0) { - available_width = MAX (1, allocation_width - 2); /* 1px border */ - available_height = MAX (1, allocation_height - 2); /* 1px border */ + view->sizing_mode = sizing_mode; + gtk_widget_queue_resize (GTK_WIDGET (view)); - scale = (double)available_width * view->scale / (width + 0.5); + g_object_notify (G_OBJECT (view), "sizing-mode"); +} - if ((height + 0.5) * scale / view->scale > available_height) - scale = ((double)(available_width - vsb_width) * view->scale / - (width + 0.5)); - } +EvSizingMode +ev_view_get_sizing_mode (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE); - ev_view_zoom (view, scale, FALSE); + return view->sizing_mode; } -const char * -ev_view_get_status (EvView *view) +gboolean +ev_view_can_zoom_in (EvView *view) { - g_return_val_if_fail (EV_IS_VIEW (view), NULL); + return view->scale * ZOOM_IN_FACTOR <= MAX_SCALE; +} - return view->status; +gboolean +ev_view_can_zoom_out (EvView *view) +{ + return view->scale * ZOOM_OUT_FACTOR >= MIN_SCALE; } -const char * -ev_view_get_find_status (EvView *view) +void +ev_view_zoom_in (EvView *view) { - g_return_val_if_fail (EV_IS_VIEW (view), NULL); + g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); - return view->find_status; + view->pending_scroll = SCROLL_TO_CENTER; + ev_view_set_zoom (view, ZOOM_IN_FACTOR, TRUE); } void -ev_view_find_next (EvView *view) +ev_view_zoom_out (EvView *view) { - int n_results, n_pages; - EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + g_return_if_fail (view->sizing_mode == EV_SIZING_FREE); - n_results = ev_document_find_get_n_results (find); - n_pages = ev_document_get_n_pages (view->document); + view->pending_scroll = SCROLL_TO_CENTER; + ev_view_set_zoom (view, ZOOM_OUT_FACTOR, TRUE); +} - view->find_result++; +static void +ev_view_set_orientation (EvView *view, + EvOrientation orientation) +{ + ev_document_set_orientation (view->document, orientation); - if (view->find_result >= n_results) { - view->find_result = 0; - view->find_page++; + clear_caches (view); + setup_caches (view); - if (view->find_page > n_pages) { - view->find_page = 1; - } + gtk_widget_queue_resize (GTK_WIDGET (view)); +} - jump_to_find_page (view); +void +ev_view_rotate_right (EvView *view) +{ + EvOrientation orientation, new_orientation; + + orientation = ev_document_get_orientation (view->document); + if (orientation == EV_ORIENTATION_PORTRAIT) { + new_orientation = EV_ORIENTATION_LANDSCAPE; + } else if (orientation == EV_ORIENTATION_LANDSCAPE) { + new_orientation = EV_ORIENTATION_UPSIDEDOWN; + } else if (orientation == EV_ORIENTATION_UPSIDEDOWN) { + new_orientation = EV_ORIENTATION_SEASCAPE; } else { - jump_to_find_result (view); - gtk_widget_queue_draw (GTK_WIDGET (view)); + new_orientation = EV_ORIENTATION_PORTRAIT; } + ev_view_set_orientation (view, new_orientation); } void -ev_view_find_previous (EvView *view) +ev_view_rotate_left (EvView *view) { - int n_results, n_pages; - EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); - - n_results = ev_document_find_get_n_results (find); - n_pages = ev_document_get_n_pages (view->document); + EvOrientation orientation, new_orientation; + + orientation = ev_document_get_orientation (view->document); + if (orientation == EV_ORIENTATION_PORTRAIT) { + new_orientation = EV_ORIENTATION_SEASCAPE; + } else if (orientation == EV_ORIENTATION_SEASCAPE) { + new_orientation = EV_ORIENTATION_UPSIDEDOWN; + } else if (orientation == EV_ORIENTATION_UPSIDEDOWN) { + new_orientation = EV_ORIENTATION_LANDSCAPE; + } else { + new_orientation = EV_ORIENTATION_PORTRAIT; + } + ev_view_set_orientation (view, new_orientation); +} - view->find_result--; +static double +zoom_for_size_fit_width (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width) +{ + double scale; - if (view->find_result < 0) { - view->find_result = 0; - view->find_page--; + scale = (double)target_width / doc_width; - if (view->find_page < 1) { - view->find_page = n_pages; - } + if (doc_height * scale > target_height) + scale = (double) (target_width - vsb_width) / doc_width; - jump_to_find_page (view); - } else { - jump_to_find_result (view); - gtk_widget_queue_draw (GTK_WIDGET (view)); - } + return scale; } + +static double +zoom_for_size_best_fit (int doc_width, + int doc_height, + int target_width, + int target_height, + int vsb_width, + int hsb_width) +{ + double w_scale; + double h_scale; + + w_scale = (double)target_width / doc_width; + h_scale = (double)target_height / doc_height; + + if (doc_height * w_scale > target_height) + w_scale = (double) (target_width - vsb_width) / doc_width; + if (doc_width * h_scale > target_width) + h_scale = (double) (target_height - hsb_width) / doc_height; + + return MIN (w_scale, h_scale); +} + + +static void +ev_view_zoom_for_size_presentation (EvView *view, + int width, + int height) +{ + int doc_width, doc_height; + gdouble scale; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + 1.0, + &doc_width, + &doc_height); + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, 0, 0); + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_continuous_and_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_max_width (view->page_cache, + 1.0, + &doc_width); + ev_page_cache_get_max_height (view->page_cache, + 1.0, + &doc_height); + compute_border (view, doc_width, doc_height, &border); + + doc_width = doc_width * 2; + width -= (2 * (border.left + border.right) + 3 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing - 1); + + /* FIXME: We really need to calculate the overall height here, not the + * page height. We assume there's always a vertical scrollbar for + * now. We need to fix this. */ + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_continuous (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_max_width (view->page_cache, + 1.0, + &doc_width); + ev_page_cache_get_max_height (view->page_cache, + 1.0, + &doc_height); + compute_border (view, doc_width, doc_height, &border); + + width -= (border.left + border.right + 2 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing - 1); + + /* FIXME: We really need to calculate the overall height here, not the + * page height. We assume there's always a vertical scrollbar for + * now. We need to fix this. */ + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width - vsb_width, height, 0); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width - vsb_width, height, 0, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_dual_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + GtkBorder border; + gint doc_width, doc_height; + gdouble scale; + gint other_page; + + other_page = view->current_page ^ 1; + + /* Find the largest of the two. */ + ev_page_cache_get_size (view->page_cache, + view->current_page, + 1.0, + &doc_width, &doc_height); + + if (other_page < ev_page_cache_get_n_pages (view->page_cache)) { + gint width_2, height_2; + ev_page_cache_get_size (view->page_cache, + other_page, + 1.0, + &width_2, &height_2); + if (width_2 > doc_width) + doc_width = width_2; + if (height_2 > doc_height) + doc_height = height_2; + } + compute_border (view, doc_width, doc_height, &border); + + doc_width = doc_width * 2; + width -= ((border.left + border.right)* 2 + 3 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +static void +ev_view_zoom_for_size_single_page (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + int doc_width, doc_height; + GtkBorder border; + gdouble scale; + + ev_page_cache_get_size (view->page_cache, + view->current_page, + 1.0, + &doc_width, + &doc_height); + /* Get an approximate border */ + compute_border (view, width, height, &border); + + width -= (border.left + border.right + 2 * view->spacing); + height -= (border.top + border.bottom + 2 * view->spacing); + + if (view->sizing_mode == EV_SIZING_FIT_WIDTH) + scale = zoom_for_size_fit_width (doc_width, doc_height, width, height, vsb_width); + else if (view->sizing_mode == EV_SIZING_BEST_FIT) + scale = zoom_for_size_best_fit (doc_width, doc_height, width, height, vsb_width, hsb_height); + else + g_assert_not_reached (); + + ev_view_set_zoom (view, scale, FALSE); +} + +void +ev_view_set_zoom_for_size (EvView *view, + int width, + int height, + int vsb_width, + int hsb_height) +{ + g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH || + view->sizing_mode == EV_SIZING_BEST_FIT); + g_return_if_fail (width >= 0); + g_return_if_fail (height >= 0); + + if (view->document == NULL) + return; + + if (view->presentation) + ev_view_zoom_for_size_presentation (view, width, height); + else if (view->continuous && view->dual_page) + ev_view_zoom_for_size_continuous_and_dual_page (view, width, height, vsb_width, hsb_height); + else if (view->continuous) + ev_view_zoom_for_size_continuous (view, width, height, vsb_width, hsb_height); + else if (view->dual_page) + ev_view_zoom_for_size_dual_page (view, width, height, vsb_width, hsb_height); + else + ev_view_zoom_for_size_single_page (view, width, height, vsb_width, hsb_height); +} + +/*** Status text messages ***/ + +const char * +ev_view_get_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + return view->status; +} + +static void +ev_view_set_status (EvView *view, const char *message) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + if (message != view->status) { + g_free (view->status); + view->status = g_strdup (message); + g_object_notify (G_OBJECT (view), "status"); + } +} + +static void +update_find_status_message (EvView *view) +{ + char *message; + + if (view->current_page == view->find_page) { + int results; + + results = ev_document_find_get_n_results + (EV_DOCUMENT_FIND (view->document), + view->current_page); + /* TRANS: Sometimes this could be better translated as + "%d hit(s) on this page". Therefore this string + contains plural cases. */ + message = g_strdup_printf (ngettext ("%d found on this page", + "%d found on this page", + results), + results); + } else { + double percent; + + percent = ev_document_find_get_progress + (EV_DOCUMENT_FIND (view->document)); + if (percent >= (1.0 - 1e-10)) { + message = g_strdup (_("Not found")); + } else { + message = g_strdup_printf (_("%3d%% remaining to search"), + (int) ((1.0 - percent) * 100)); + } + + } + ev_view_set_find_status (view, message); + g_free (message); +} + +const char * +ev_view_get_find_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + return view->find_status; +} + +static void +ev_view_set_find_status (EvView *view, const char *message) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + g_free (view->find_status); + view->find_status = g_strdup (message); + g_object_notify (G_OBJECT (view), "find-status"); +} + +/*** Find ***/ + +static void +jump_to_find_result (EvView *view) +{ + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + EvRectangle rect; + GdkRectangle view_rect; + int n_results; + int page = view->find_page; + + n_results = ev_document_find_get_n_results (find, page); + + if (n_results > view->find_result) { + ev_document_find_get_result + (find, page, view->find_result, &rect); + + doc_rect_to_view_rect (view, page, &rect, &view_rect); + ensure_rectangle_is_visible (view, &view_rect); + } +} + +static void +jump_to_find_page (EvView *view) +{ + int n_pages, i; + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + for (i = 0; i < n_pages; i++) { + int has_results; + int page; + + page = i + view->find_page; + if (page >= n_pages) { + page = page - n_pages; + } + + has_results = ev_document_find_page_has_results + (EV_DOCUMENT_FIND (view->document), page); + if (has_results == -1) { + view->find_page = page; + break; + } else if (has_results == 1) { + ev_page_cache_set_current_page (view->page_cache, page); + jump_to_find_result (view); + break; + } + } +} + +gboolean +ev_view_can_find_next (EvView *view) +{ + int n_results = 0; + + if (EV_IS_DOCUMENT_FIND (view->document)) { + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + + n_results = ev_document_find_get_n_results (find, view->current_page); + } + + return n_results > 0; +} + +void +ev_view_find_next (EvView *view) +{ + EvPageCache *page_cache; + int n_results, n_pages; + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + + page_cache = ev_page_cache_get (view->document); + n_results = ev_document_find_get_n_results (find, view->current_page); + + n_pages = ev_page_cache_get_n_pages (page_cache); + + view->find_result++; + + if (view->find_result >= n_results) { + view->find_result = 0; + view->find_page++; + + if (view->find_page >= n_pages) { + view->find_page = 0; + } + + jump_to_find_page (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +void +ev_view_find_previous (EvView *view) +{ + int n_results, n_pages; + EvDocumentFind *find = EV_DOCUMENT_FIND (view->document); + EvPageCache *page_cache; + + page_cache = ev_page_cache_get (view->document); + + n_results = ev_document_find_get_n_results (find, view->current_page); + + n_pages = ev_page_cache_get_n_pages (page_cache); + + view->find_result--; + + if (view->find_result < 0) { + view->find_result = 0; + view->find_page--; + + if (view->find_page < 0) { + view->find_page = n_pages - 1; + } + + jump_to_find_page (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} + +/*** Selections ***/ + +/* compute_new_selection_rect/text calculates the area currently selected by + * view_rect. each handles a different mode; + */ +static GList * +compute_new_selection_rect (EvView *view, + GdkPoint *start, + GdkPoint *stop) +{ + GdkRectangle view_rect; + int n_pages, i; + GList *list = NULL; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE); + + view_rect.x = MIN (start->x, stop->x); + view_rect.y = MIN (start->y, stop->y); + view_rect.width = MAX (start->x, stop->x) - view_rect.x; + view_rect.width = MAX (start->y, stop->y) - view_rect.y; + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + for (i = 0; i < n_pages; i++) { + GdkRectangle page_area; + GtkBorder border; + + if (get_page_extents (view, i, &page_area, &border)) { + GdkRectangle overlap; + + if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) { + EvViewSelection *selection; + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + view_rect_to_doc_rect (view, &overlap, &page_area, + &(selection->rect)); + + list = g_list_append (list, selection); + } + } + } + + return list; +} + +static gboolean +gdk_rectangle_point_in (GdkRectangle *rectangle, + GdkPoint *point) +{ + return rectangle->x <= point->x && + rectangle->y <= point->y && + point->x < rectangle->x + rectangle->width && + point->y < rectangle->y + rectangle->height; +} + +static GList * +compute_new_selection_text (EvView *view, + GdkPoint *start, + GdkPoint *stop) +{ + int n_pages, i, first, last; + GList *list = NULL; + EvViewSelection *selection; + gint width, height; + + g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT); + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + + /* First figure out the range of pages the selection + * affects. */ + first = n_pages; + last = 0; + for (i = 0; i < n_pages; i++) { + GdkRectangle page_area; + GtkBorder border; + + get_page_extents (view, i, &page_area, &border); + if (gdk_rectangle_point_in (&page_area, start) || + gdk_rectangle_point_in (&page_area, stop)) { + if (first == n_pages) + first = i; + last = i; + } + + } + + + + /* Now create a list of EvViewSelection's for the affected + * pages. This could be an empty list, a list of just one + * page or a number of pages.*/ + for (i = first; i < last + 1; i++) { + GdkRectangle page_area; + GtkBorder border; + GdkPoint *point; + + ev_page_cache_get_size (view->page_cache, i, + 1.0, &width, &height); + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + selection->rect.x1 = selection->rect.y1 = 0; + selection->rect.x2 = width; + selection->rect.y2 = height; + + get_page_extents (view, i, &page_area, &border); + + if (gdk_rectangle_point_in (&page_area, start)) + point = start; + else + point = stop; + + if (i == first) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x1, + &selection->rect.y1); + + /* If the selection is contained within just one page, + * make sure we don't write 'start' into both points + * in selection->rect. */ + if (first == last) + point = stop; + + if (i == last) + view_point_to_doc_point (view, point, &page_area, + &selection->rect.x2, + &selection->rect.y2); + + list = g_list_append (list, selection); + } + + return list; +} + +/* This function takes the newly calculated list, and figures out which regions + * have changed. It then queues a redraw approporiately. + */ +static void +merge_selection_region (EvView *view, + GList *list) +{ + + /* FIXME: actually write... */ + clear_selection (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + + view->selection_info.selections = list; + ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, list); +} + +static void +compute_selections (EvView *view, + GdkPoint *start, + GdkPoint *stop) +{ + GList *list; + + if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE) + list = compute_new_selection_rect (view, start, stop); + else + list = compute_new_selection_text (view, start, stop); + merge_selection_region (view, list); +} + +/* Free's the selection. It's up to the caller to queue redraws if needed. + */ +static void +selection_free (EvViewSelection *selection) +{ + g_free (selection); +} + +static void +clear_selection (EvView *view) +{ + g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL); + view->selection_info.selections = NULL; + view->selection_info.in_selection = FALSE; +} + + +void +ev_view_select_all (EvView *view) +{ + int n_pages, i; + + clear_selection (view); + + n_pages = ev_page_cache_get_n_pages (view->page_cache); + for (i = 0; i < n_pages; i++) { + int width, height; + EvViewSelection *selection; + + ev_page_cache_get_size (view->page_cache, + i, 1.0, &width, &height); + + selection = g_new0 (EvViewSelection, 1); + selection->page = i; + selection->rect.x1 = selection->rect.y1 = 0; + selection->rect.x2 = width; + selection->rect.y2 = height; + + view->selection_info.selections = g_list_append (view->selection_info.selections, selection); + } + + ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections); + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + +static char * +get_selected_text (EvView *ev_view) +{ + GString *text; + GList *l; + + text = g_string_new (NULL); + + ev_document_doc_mutex_lock (); + + for (l = ev_view->selection_info.selections; l != NULL; l = l->next) { + EvViewSelection *selection = (EvViewSelection *)l->data; + char *tmp; + + tmp = ev_document_get_text (ev_view->document, + selection->page, + &selection->rect); + g_string_append (text, tmp); + g_free (tmp); + } + + ev_document_doc_mutex_unlock (); + + return g_string_free (text, FALSE); +} + +void +ev_view_copy (EvView *ev_view) +{ + GtkClipboard *clipboard; + char *text; + + if (!ev_document_can_get_text (ev_view->document)) { + return; + } + + text = get_selected_text (ev_view); + clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), + GDK_SELECTION_CLIPBOARD); + gtk_clipboard_set_text (clipboard, text, -1); + g_free (text); +} + +static void +ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + char *text; + + if (!ev_document_can_get_text (ev_view->document)) { + return; + } + + text = get_selected_text (ev_view); + gtk_selection_data_set_text (selection_data, text, -1); + g_free (text); +} + +static void +ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data) +{ + EvView *view = EV_VIEW (data); + + clear_selection (view); +} + +static void +ev_view_update_primary_selection (EvView *ev_view) +{ + GtkClipboard *clipboard; + + clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view), + GDK_SELECTION_PRIMARY); + + if (ev_view->selection_info.selections) { + if (!gtk_clipboard_set_with_owner (clipboard, + targets, + G_N_ELEMENTS (targets), + ev_view_primary_get_cb, + ev_view_primary_clear_cb, + G_OBJECT (ev_view))) + ev_view_primary_clear_cb (clipboard, ev_view); + } else { + if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view)) + gtk_clipboard_clear (clipboard); + } +} + +/*** Cursor operations ***/ + +static GdkCursor * +ev_view_create_invisible_cursor(void) +{ + GdkBitmap *empty; + GdkColor black = { 0, 0, 0, 0 }; + static char bits[] = { 0x00 }; + + empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1); + + return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0); +} + +static void +ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) +{ + GdkCursor *cursor = NULL; + GdkDisplay *display; + GtkWidget *widget; + + if (view->cursor == new_cursor) { + return; + } + + widget = gtk_widget_get_toplevel (GTK_WIDGET (view)); + display = gtk_widget_get_display (widget); + view->cursor = new_cursor; + + switch (new_cursor) { + case EV_VIEW_CURSOR_NORMAL: + gdk_window_set_cursor (widget->window, NULL); + break; + case EV_VIEW_CURSOR_IBEAM: + cursor = gdk_cursor_new_for_display (display, GDK_XTERM); + break; + case EV_VIEW_CURSOR_LINK: + cursor = gdk_cursor_new_for_display (display, GDK_HAND2); + break; + case EV_VIEW_CURSOR_WAIT: + cursor = gdk_cursor_new_for_display (display, GDK_WATCH); + break; + case EV_VIEW_CURSOR_HIDDEN: + cursor = ev_view_create_invisible_cursor (); + break; + case EV_VIEW_CURSOR_DRAG: + cursor = gdk_cursor_new_for_display (display, GDK_FLEUR); + break; + } + + if (cursor) { + gdk_window_set_cursor (widget->window, cursor); + gdk_cursor_unref (cursor); + gdk_flush(); + } +} + +void +ev_view_hide_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN); +} + +void +ev_view_show_cursor (EvView *view) +{ + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); +} + +/*** Enum description for usage in signal ***/ + +GType +ev_sizing_mode_get_type (void) +{ + static GType etype = 0; + if (etype == 0) { + static const GEnumValue values[] = { + { EV_SIZING_FIT_WIDTH, "EV_SIZING_FIT_WIDTH", "fit-width" }, + { EV_SIZING_BEST_FIT, "EV_SIZING_BEST_FIT", "best-fit" }, + { EV_SIZING_FREE, "EV_SIZING_FREE", "free" }, + { 0, NULL, NULL } + }; + etype = g_enum_register_static ("EvSizingMode", values); + } + return etype; +} +