X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=shell%2Fev-view.c;h=7ca3630bc8903191a8102564a0efe49dc0d58fba;hb=57a8ca8e4c7ee8cd49081ba500563d33cfa048d0;hp=45535253d2ad349dfc62655d008ca594b6333f3c;hpb=08dc4040951ec1e3945e07107d008a4ce7c928c9;p=evince.git diff --git a/shell/ev-view.c b/shell/ev-view.c index 45535253..7ca3630b 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -19,28 +19,73 @@ */ #include +#include +#include +#include +#include +#include +#include #include "ev-marshal.h" #include "ev-view.h" +#include "ev-document-find.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)) #define EV_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass)) +enum { + PROP_0, + PROP_STATUS, + PROP_FIND_STATUS +}; + +enum { + TARGET_STRING, + TARGET_TEXT, + TARGET_COMPOUND_TEXT, + TARGET_UTF8_STRING, + TARGET_TEXT_BUFFER_CONTENTS +}; + +static const GtkTargetEntry targets[] = { + { "STRING", 0, TARGET_STRING }, + { "TEXT", 0, TARGET_TEXT }, + { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }, + { "UTF8_STRING", 0, TARGET_UTF8_STRING }, +}; + +typedef enum { + EV_VIEW_CURSOR_NORMAL, + EV_VIEW_CURSOR_HAND +} EvViewCursor; + struct _EvView { GtkWidget parent_instance; EvDocument *document; + EvHistory *history; GdkWindow *bin_window; + + char *status; + char *find_status; int scroll_x; int scroll_y; + gboolean pressed_button; + gboolean has_selection; + GdkRectangle selection; + EvViewCursor cursor; + GtkAdjustment *hadjustment; GtkAdjustment *vadjustment; GArray *find_results; + int results_on_this_page; + int next_page_with_result; + double find_percent_complete; double scale; }; @@ -51,6 +96,9 @@ struct _EvViewClass { void (*set_scroll_adjustments) (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); + void (*scroll_view) (EvView *view, + GtkScrollType scroll, + gboolean horizontal); /* Should this be notify::page? */ void (*page_changed) (EvView *view); @@ -61,7 +109,7 @@ static guint page_changed_signal = 0; static void ev_view_set_scroll_adjustments (EvView *view, GtkAdjustment *hadjustment, GtkAdjustment *vadjustment); - + G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_WIDGET) /*** Helper functions ***/ @@ -138,6 +186,9 @@ ev_view_finalize (GObject *object) if (view->document) g_object_unref (view->document); + if (view->history) + g_object_unref (view->history); + ev_view_set_scroll_adjustments (view, NULL, NULL); g_array_free (view->find_results, TRUE); @@ -235,7 +286,12 @@ ev_view_realize (GtkWidget *widget) 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; + 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, @@ -288,40 +344,88 @@ ev_view_state_changed (GtkWidget *widget, update_window_backgrounds (EV_VIEW (widget)); } +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 +draw_rubberband (GtkWidget *widget, GdkWindow *window, const GdkRectangle *rect) +{ + 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 | 0x40; + + 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,rect->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, rect->y, + rect->width - 1, + rect->height - 1); + g_object_unref (gc); + + gdk_color_free (fill_color_gdk); +} + static void expose_bin_window (GtkWidget *widget, GdkEventExpose *event) { EvView *view = EV_VIEW (widget); int i; + int current_page; const EvFindResult *results; - if (view->document) - ev_document_render (view->document, - event->area.x, event->area.y, - event->area.width, event->area.height); + if (view->document == NULL) + return; + + ev_document_render (view->document, + event->area.x, event->area.y, + event->area.width, event->area.height); results = (EvFindResult*) view->find_results->data; + current_page = ev_document_get_page (view->document); i = 0; while (i < view->find_results->len) { #if 0 - g_printerr ("highlighting result %d at %d,%d %dx%d\n", - i, + g_printerr ("highlighting result %d page %d at %d,%d %dx%d\n", + i, results[i].page_num, results[i].highlight_area.x, results[i].highlight_area.y, results[i].highlight_area.width, results[i].highlight_area.height); -#endif - // if (results[i].page_num == current_page) FIXME - gdk_draw_rectangle (view->bin_window, - widget->style->base_gc[GTK_STATE_SELECTED], - FALSE, - results[i].highlight_area.x, - results[i].highlight_area.y, - results[i].highlight_area.width, - results[i].highlight_area.height); +#endif + if (results[i].page_num == current_page) + draw_rubberband (widget, view->bin_window, + &results[i].highlight_area); ++i; } + + if (view->has_selection) { + draw_rubberband (widget, view->bin_window, &view->selection); + } } static gboolean @@ -338,29 +442,238 @@ ev_view_expose_event (GtkWidget *widget, return FALSE; } +void +ev_view_select_all (EvView *ev_view) +{ + 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); +} + +void +ev_view_copy (EvView *ev_view) +{ + 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); +} + +static void +ev_view_primary_get_cb (GtkClipboard *clipboard, + GtkSelectionData *selection_data, + guint info, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + char *text; + + text = ev_document_get_text (ev_view->document, &ev_view->selection); + gtk_selection_data_set_text (selection_data, text, -1); +} + +static void +ev_view_primary_clear_cb (GtkClipboard *clipboard, + gpointer data) +{ + EvView *ev_view = EV_VIEW (data); + + ev_view->has_selection = FALSE; +} + +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->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); + } +} + static gboolean ev_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { - /* EvView *view = EV_VIEW (widget); */ + EvView *view = EV_VIEW (widget); - return FALSE; + if (!GTK_WIDGET_HAS_FOCUS (widget)) { + gtk_widget_grab_focus (widget); + } + + view->pressed_button = event->button; + + switch (event->button) { + case 1: + if (view->has_selection) { + view->has_selection = FALSE; + gtk_widget_queue_draw (widget); + } + + view->selection.x = event->x; + view->selection.y = event->y; + view->selection.width = 0; + view->selection.height = 0; + break; + } + + return TRUE; +} + +static char * +status_message_from_link (EvLink *link) +{ + EvLinkType type; + char *msg; + int page; + + type = ev_link_get_link_type (link); + + switch (type) { + case EV_LINK_TYPE_TITLE: + 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); + break; + case EV_LINK_TYPE_EXTERNAL_URI: + msg = g_strdup (ev_link_get_uri (link)); + break; + default: + msg = NULL; + } + + return msg; +} + +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 +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"); +} + +static void +ev_view_set_cursor (EvView *view, EvViewCursor new_cursor) +{ + GdkCursor *cursor; + GtkWidget *widget = GTK_WIDGET (view); + + if (view->cursor == new_cursor) { + return; + } + + switch (new_cursor) { + case EV_VIEW_CURSOR_NORMAL: + gdk_window_set_cursor (widget->window, NULL); + break; + case EV_VIEW_CURSOR_HAND: + cursor = gdk_cursor_new_for_display + (gdk_display_get_default(), GDK_HAND2); + gdk_window_set_cursor (widget->window, cursor); + gdk_cursor_unref (cursor); + break; + } + + view->cursor = new_cursor; } static gboolean ev_view_motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { - /* EvView *view = EV_VIEW (widget); */ - - return FALSE; + EvView *view = EV_VIEW (widget); + + if (view->pressed_button > 0) { + view->has_selection = TRUE; + view->selection.x = MIN (view->selection.x, event->x); + view->selection.y = MIN (view->selection.y, event->y); + view->selection.width = ABS (view->selection.x - event->x) + 1; + view->selection.height = ABS (view->selection.y - event->y) + 1; + } else if (view->document) { + EvLink *link; + + link = ev_document_get_link (view->document, event->x, event->y); + if (link) { + char *msg; + + msg = status_message_from_link (link); + ev_view_set_status (view, msg); + ev_view_set_cursor (view, EV_VIEW_CURSOR_HAND); + g_free (msg); + + g_object_unref (link); + } else { + ev_view_set_status (view, NULL); + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } + } + + gtk_widget_queue_draw (widget); + + return TRUE; } static gboolean ev_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { - /* EvView *view = EV_VIEW (widget); */ + EvView *view = EV_VIEW (widget); + + view->pressed_button = -1; + + 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); + } + } return FALSE; } @@ -414,14 +727,108 @@ ev_view_set_scroll_adjustments (EvView *view, view_update_adjustments (view); } +static void +add_scroll_binding (GtkBindingSet *binding_set, + guint keyval, + GtkScrollType scroll, + gboolean horizontal) +{ + 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); +} + +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; + + if (horizontal) { + adjustment = view->hadjustment; + } else { + adjustment = view->vadjustment; + } + + value = adjustment->value; + + 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); + } +} + +static void +ev_view_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (prop_id) + { + /* Read only */ + case PROP_STATUS: + case PROP_FIND_STATUS: + break; + } +} + +static void +ev_view_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + EvView *view = EV_VIEW (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; + } +} + static void ev_view_class_init (EvViewClass *class) { GObjectClass *object_class = G_OBJECT_CLASS (class); GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class); + GtkBindingSet *binding_set; object_class->finalize = ev_view_finalize; + object_class->set_property = ev_view_set_property; + object_class->get_property = ev_view_get_property; widget_class->expose_event = ev_view_expose_event; widget_class->button_press_event = ev_view_button_press_event; @@ -434,8 +841,9 @@ ev_view_class_init (EvViewClass *class) widget_class->style_set = ev_view_style_set; widget_class->state_changed = ev_view_state_changed; 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), @@ -453,6 +861,42 @@ ev_view_class_init (EvViewClass *class) 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); + + g_object_class_install_property (object_class, + PROP_STATUS, + g_param_spec_string ("status", + "Status Message", + "The status message", + NULL, + G_PARAM_READABLE)); + + g_object_class_install_property (object_class, + PROP_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); + + 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); + + 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); } static void @@ -460,15 +904,103 @@ ev_view_init (EvView *view) { static const GdkColor white = { 0, 0xffff, 0xffff, 0xffff }; + GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); + view->scale = 1.0; + view->pressed_button = -1; + view->cursor = EV_VIEW_CURSOR_NORMAL; gtk_widget_modify_bg (GTK_WIDGET (view), GTK_STATE_NORMAL, &white); view->find_results = g_array_new (FALSE, FALSE, sizeof (EvFindResult)); + view->results_on_this_page = 0; + view->next_page_with_result = 0; } +static char * +ev_view_get_find_status_message (EvView *view) +{ + if (view->find_results->len == 0) { + if (view->find_percent_complete >= (1.0 - 1e-10)) { + return g_strdup (_("Not found")); + } else { + return g_strdup_printf (_("%3d%% remaining to search"), + (int) ((1.0 - view->find_percent_complete) * 100)); + } + } else if (view->results_on_this_page == 0) { + g_assert (view->next_page_with_result != 0); + return g_strdup_printf (_("Found on page %d"), + view->next_page_with_result); + } else { + return g_strdup_printf (_("%d found on this page"), + view->results_on_this_page); + } +} + +static void +update_find_results (EvView *view) +{ + const EvFindResult *results; + int i; + int on_this_page; + int next_page_with_result; + int earliest_page_with_result; + int current_page; + gboolean counts_changed; + + results = (EvFindResult*) view->find_results->data; + current_page = ev_document_get_page (view->document); + next_page_with_result = 0; + on_this_page = 0; + earliest_page_with_result = 0; + + i = 0; + while (i < view->find_results->len) { + if (results[i].page_num == current_page) { + ++on_this_page; + } else { + int delta = results[i].page_num - current_page; + + if (delta > 0 && /* result on later page */ + (next_page_with_result == 0 || + results[i].page_num < next_page_with_result)) + next_page_with_result = results[i].page_num; + + if (delta < 0 && /* result on a previous page */ + (earliest_page_with_result == 0 || + results[i].page_num < earliest_page_with_result)) + earliest_page_with_result = results[i].page_num; + } + ++i; + } + + /* If earliest page is just the current page, there is no earliest page */ + if (earliest_page_with_result == current_page) + earliest_page_with_result = 0; + + /* If no next page, then wrap and the wrapped page is the next page */ + if (next_page_with_result == 0) + next_page_with_result = earliest_page_with_result; + + counts_changed = FALSE; + if (on_this_page != view->results_on_this_page || + next_page_with_result != view->next_page_with_result) { + view->results_on_this_page = on_this_page; + view->next_page_with_result = next_page_with_result; + counts_changed = TRUE; + } + + if (counts_changed || + view->find_results->len == 0) { + char *message; + + message = ev_view_get_find_status_message (view); + ev_view_set_find_status (view, message); + g_free (message); + } +} static void found_results_callback (EvDocument *document, @@ -484,6 +1016,24 @@ found_results_callback (EvDocument *document, if (n_results > 0) g_array_append_vals (view->find_results, results, n_results); + +#if 0 + { + int i; + + g_printerr ("%d results %d%%: ", n_results, + (int) (percent_complete * 100)); + i = 0; + while (i < n_results) { + g_printerr ("%d ", results[i].page_num); + ++i; + } + g_printerr ("\n"); + } +#endif + + view->find_percent_complete = percent_complete; + update_find_results (view); gtk_widget_queue_draw (GTK_WIDGET (view)); } @@ -496,6 +1046,13 @@ ev_view_new (void) return g_object_new (EV_TYPE_VIEW, NULL); } +static void +document_changed_callback (EvDocument *document, + EvView *view) +{ + gtk_widget_queue_draw (GTK_WIDGET (view)); +} + void ev_view_set_document (EvView *view, EvDocument *document) @@ -506,21 +1063,29 @@ ev_view_set_document (EvView *view, int old_page = ev_view_get_page (view); if (view->document) { - g_object_unref (view->document); g_signal_handlers_disconnect_by_func (view->document, found_results_callback, view); g_array_set_size (view->find_results, 0); + view->results_on_this_page = 0; + view->next_page_with_result = 0; + + g_object_unref (view->document); } view->document = document; if (view->document) { g_object_ref (view->document); - g_signal_connect (view->document, - "found", - G_CALLBACK (found_results_callback), - view); + if (EV_IS_DOCUMENT_FIND (view->document)) + g_signal_connect (view->document, + "found", + G_CALLBACK (found_results_callback), + view); + g_signal_connect (view->document, + "changed", + G_CALLBACK (document_changed_callback), + view); } if (GTK_WIDGET_REALIZED (view)) @@ -533,9 +1098,8 @@ ev_view_set_document (EvView *view, } } -void -ev_view_set_page (EvView *view, - int page) +static void +set_document_page (EvView *view, int page) { if (view->document) { int old_page = ev_document_get_page (view->document); @@ -543,11 +1107,138 @@ ev_view_set_page (EvView *view, ev_document_set_page (view->document, page); if (old_page != ev_document_get_page (view->document)) { g_signal_emit (view, page_changed_signal, 0); - gtk_widget_queue_draw (GTK_WIDGET (view)); + + view->find_percent_complete = 0.0; + update_find_results (view); } } } +static void +go_to_link (EvView *view, EvLink *link) +{ + EvLinkType type; + const char *uri; + int page; + + 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; + } +} + +void +ev_view_go_to_link (EvView *view, EvLink *link) +{ + EvLinkType type; + + go_to_link (view, link); + + type = ev_link_get_link_type (link); + if (type == EV_LINK_TYPE_PAGE) { + ev_history_add_link (view->history, link); + } +} + +static void +go_to_index (EvView *view, int index) +{ + EvLink *link; + + link = ev_history_get_link_nth (view->history, index); + g_return_if_fail (link != NULL); + + go_to_link (view, link); +} + +gboolean +ev_view_can_go_back (EvView *view) +{ + int index, n; + + g_return_val_if_fail (EV_IS_HISTORY (view->history), FALSE); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + return index != MAX (0, index - 1); + } else { + return FALSE; + } +} + +void +ev_view_go_back (EvView *view) +{ + int index, n; + + g_return_if_fail (EV_IS_HISTORY (view->history)); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + index = MAX (0, index - 1); + ev_history_set_current_index (view->history, index); + } +} + +gboolean +ev_view_can_go_forward (EvView *view) +{ + int index, n; + + g_return_val_if_fail (EV_IS_HISTORY (view->history), FALSE); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + return index != MIN (n - 1, index + 1); + } else { + return FALSE; + } +} + +void +ev_view_go_forward (EvView *view) +{ + int index, n; + + g_return_if_fail (EV_IS_HISTORY (view->history)); + + index = ev_history_get_current_index (view->history); + n = ev_history_get_n_links (view->history); + + if (n > 0) { + index = MIN (n - 1, index + 1); + ev_history_set_current_index (view->history, index); + } +} + + +void +ev_view_set_page (EvView *view, + int page) +{ + g_return_if_fail (EV_IS_VIEW (view)); + g_return_if_fail (EV_IS_HISTORY (view->history)); + + set_document_page (view, page); + ev_history_add_page (view->history, page); +} + int ev_view_get_page (EvView *view) { @@ -579,7 +1270,7 @@ ev_view_zoom (EvView *view, ev_document_set_scale (view->document, view->scale); - gtk_widget_queue_draw (GTK_WIDGET (view)); + gtk_widget_queue_resize (GTK_WIDGET (view)); } void @@ -637,3 +1328,48 @@ ev_view_fit_width (EvView *view) ev_view_zoom (view, scale, FALSE); } + +static void +history_index_changed_cb (EvHistory *history, + GParamSpec *pspec, + EvView *view) +{ + int index; + + index = ev_history_get_current_index (history); + go_to_index (view, index); +} + +void +ev_view_set_history (EvView *view, + EvHistory *history) +{ + if (view->history) { + g_object_unref (view->history); + } + + view->history = g_object_ref (history); + ev_history_add_page (view->history, ev_view_get_page (view)); + + g_signal_connect (view->history, "notify::index", + G_CALLBACK (history_index_changed_cb), + view); +} + +const char * +ev_view_get_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + return view->status; +} + +const char * +ev_view_get_find_status (EvView *view) +{ + g_return_val_if_fail (EV_IS_VIEW (view), NULL); + + return view->find_status; +} + +