X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=shell%2Fev-view.c;h=589311ad85956e56333a004ea06ff65172f5ced3;hb=75eac88174e3a7843b702ffd38e06b0e4d3d62ac;hp=70b50e0c4bef82ee940d82b90c946600d7677abf;hpb=ff8d0330fc705c931a40d07e28eb4060f1dd92f9;p=evince.git diff --git a/shell/ev-view.c b/shell/ev-view.c index 70b50e0c..589311ad 100644 --- a/shell/ev-view.c +++ b/shell/ev-view.c @@ -1,3 +1,4 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* this file is part of evince, a gnome document viewer * * Copyright (C) 2004 Red Hat, Inc @@ -18,26 +19,91 @@ */ #include +#include +#include +#include +#include +#include +#include #include "ev-marshal.h" #include "ev-view.h" +#include "ev-document-find.h" +#include "ev-document-misc.h" +#include "ev-debug.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_LINK, + EV_VIEW_CURSOR_WAIT, + EV_VIEW_CURSOR_HIDDEN +} EvViewCursor; + +#define ZOOM_IN_FACTOR 1.2 +#define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR) + +#define MIN_SCALE 0.05409 +#define MAX_SCALE 18.4884 + +/* FIXME: temporarily setting the epsilon very high until we figure out how to + * constrain the size of the window to a pixel width, instead of to the zoom + * level */ +#define ZOOM_EPSILON 1e-2 + + struct _EvView { GtkWidget parent_instance; EvDocument *document; GdkWindow *bin_window; + + char *status; + char *find_status; int scroll_x; int scroll_y; + gboolean pressed_button; + gboolean has_selection; + GdkPoint selection_start; + GdkRectangle selection; + EvViewCursor cursor; + GtkAdjustment *hadjustment; GtkAdjustment *vadjustment; + + int find_page; + int find_result; + int spacing; + + double scale; + EvSizingMode sizing_mode; }; struct _EvViewClass { @@ -46,12 +112,20 @@ 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); }; +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 ***/ @@ -125,6 +199,8 @@ ev_view_finalize (GObject *object) { EvView *view = EV_VIEW (object); + LOG ("Finalize"); + if (view->document) g_object_unref (view->document); @@ -147,10 +223,40 @@ static void ev_view_size_request (GtkWidget *widget, GtkRequisition *requisition) { - /* EvView *view = EV_VIEW (widget); */ - - requisition->width = 500; - requisition->height = 500; + EvView *view = EV_VIEW (widget); + GtkBorder border; + gint width, height; + + if (! GTK_WIDGET_REALIZED (widget)) + return; + + if (! view->document) { + requisition->width = 1; + requisition->height = 1; + return; + } + + ev_document_get_page_size (view->document, -1, + &width, &height); + ev_document_misc_get_page_border_size (width, height, &border); + + switch (view->sizing_mode) { + case EV_SIZING_BEST_FIT: + requisition->width = MIN_SCALE * ((float) width) / view->scale; + requisition->height = MIN_SCALE * ((float) height) / view->scale; + break; + case EV_SIZING_FIT_WIDTH: + requisition->width = MIN_SCALE * ((float) width) / view->scale; + requisition->height = height + border.top + border.bottom; + requisition->height += view->spacing * 2; + break; + case EV_SIZING_FREE: + requisition->width = width + border.left + border.right; + requisition->height = height + border.top + border.bottom; + requisition->width += view->spacing * 2; + requisition->height += view->spacing * 2; + break; + } } static void @@ -171,17 +277,6 @@ ev_view_size_allocate (GtkWidget *widget, } } -static void -update_window_backgrounds (EvView *view) -{ - GtkWidget *widget = GTK_WIDGET (view); - - if (GTK_WIDGET_REALIZED (view)) { - gdk_window_set_background (view->bin_window, - &widget->style->base[GTK_WIDGET_STATE (widget)]); - } -} - static void ev_view_realize (GtkWidget *widget) { @@ -190,6 +285,7 @@ ev_view_realize (GtkWidget *widget) 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); @@ -208,12 +304,19 @@ ev_view_realize (GtkWidget *widget) GDK_WA_VISUAL); gdk_window_set_user_data (widget->window, widget); widget->style = gtk_style_attach (widget->style, widget->window); + gdk_window_set_background (widget->window, &widget->style->mid[widget->state]); 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; + 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; view->bin_window = gdk_window_new (widget->window, &attributes, @@ -223,9 +326,19 @@ ev_view_realize (GtkWidget *widget) gdk_window_set_user_data (view->bin_window, widget); gdk_window_show (view->bin_window); - attributes.event_mask = GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_MOTION_MASK | GDK_EXPOSURE_MASK; - - update_window_backgrounds (view); + widget->style = gtk_style_attach (widget->style, view->bin_window); + gdk_window_set_background (view->bin_window, &widget->style->mid[widget->state]); + + if (view->document) { + ev_document_set_target (view->document, view->bin_window); + + /* 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); + } } static void @@ -233,32 +346,139 @@ ev_view_unrealize (GtkWidget *widget) { EvView *view = EV_VIEW (widget); + if (view->document) + ev_document_set_target (view->document, NULL); + gdk_window_set_user_data (view->bin_window, NULL); gdk_window_destroy (view->bin_window); view->bin_window = NULL; - + GTK_WIDGET_CLASS (ev_view_parent_class)->unrealize (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 -ev_view_style_set (GtkWidget *widget, - GtkStyle *previous_style) +draw_rubberband (GtkWidget *widget, GdkWindow *window, + const GdkRectangle *rect, guchar alpha) { - update_window_backgrounds (EV_VIEW (widget)); + 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,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 -ev_view_state_changed (GtkWidget *widget, - GtkStateType previous_state) +highlight_find_results (EvView *view) { - update_window_backgrounds (EV_VIEW (widget)); + EvDocumentFind *find; + int i, results; + + g_return_if_fail (EV_IS_DOCUMENT_FIND (view->document)); + + find = EV_DOCUMENT_FIND (view->document); + + results = ev_document_find_get_n_results (find); + + 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); + } } + static void expose_bin_window (GtkWidget *widget, GdkEventExpose *event) { - /* EvView *view = EV_VIEW (widget); */ + EvView *view = EV_VIEW (widget); + int x_offset, y_offset; + GtkBorder border; + gint width, height; + GdkRectangle area; + int target_width, target_height; + + if (view->document == NULL) + return; + + ev_document_get_page_size (view->document, -1, + &width, &height); + ev_document_misc_get_page_border_size (width, height, &border); + + x_offset = view->spacing; + y_offset = view->spacing; + target_width = width + border.left + border.right + view->spacing * 2; + target_height = height + border.top + border.bottom + view->spacing * 2; + + x_offset += MAX (0, (widget->allocation.width - target_width) / 2); + y_offset += MAX (0, (widget->allocation.height - target_height) / 2); + + /* Paint the frame */ + area.x = x_offset; + area.y = y_offset; + area.width = width + border.left + border.right; + area.height = height + border.top + border.bottom; + ev_document_misc_paint_one_page (view->bin_window, widget, &area, &border); + + /* Render the document itself */ + ev_document_set_page_offset (view->document, + x_offset + border.left, + y_offset + border.top); + + 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); + + if (EV_IS_DOCUMENT_FIND (view->document)) { + highlight_find_results (view); + } + + if (view->has_selection) { + draw_rubberband (widget, view->bin_window, + &view->selection, 0x40); + } } static gboolean @@ -273,32 +493,265 @@ ev_view_expose_event (GtkWidget *widget, return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event); 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_start.x = event->x; + view->selection_start.y = event->y; + 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 GdkCursor * +ev_view_create_invisible_cursor(void) +{ + GdkBitmap *empty; + GdkColor black = { 0, 0, 0, 0 }; + static unsigned 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_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; + + } + + if (cursor) { + gdk_window_set_cursor (widget->window, cursor); + gdk_cursor_unref (cursor); + gdk_flush(); + } } 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_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; + + gtk_widget_queue_draw (widget); + } 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_LINK); + g_free (msg); + + 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); + } + } + } + + 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; } @@ -352,14 +805,108 @@ 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; @@ -369,11 +916,10 @@ 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->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), @@ -384,14 +930,243 @@ ev_view_class_init (EvViewClass *class) 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); + + 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 ev_view_init (EvView *view) { - static const GdkColor white = { 0, 0xffff, 0xffff, 0xffff }; - - gtk_widget_modify_bg (GTK_WIDGET (view), GTK_STATE_NORMAL, &white); + GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); + + view->spacing = 10; + view->scale = 1.0; + view->pressed_button = -1; + view->cursor = EV_VIEW_CURSOR_NORMAL; + view->sizing_mode = EV_SIZING_BEST_FIT; +} + +static void +update_find_status_message (EvView *view) +{ + char *message; + + if (ev_document_get_page (view->document) == view->find_page) { + int results; + + 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 +set_document_page (EvView *view, int new_page) +{ + int page; + int pages; + + 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) { + if (view->cursor != EV_VIEW_CURSOR_HIDDEN) { + 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); + } + + if (EV_IS_DOCUMENT_FIND (view->document)) { + view->find_page = page; + view->find_result = 0; + update_find_status_message (view); + } + } +} + +#define MARGIN 5 + +static void +ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect) +{ + GtkWidget *widget = GTK_WIDGET (view); + GtkAdjustment *adjustment; + int value; + + 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); + } + + 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); + } +} + +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 (n_results > view->find_result) { + ev_document_find_get_result + (find, view->find_result, &rect); + ensure_rectangle_is_visible (view, &rect); + } +} + +static void +jump_to_find_page (EvView *view) +{ + 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; + + 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) { + set_document_page (view, page); + jump_to_find_result (view); + break; + } + } +} + +static void +find_changed_cb (EvDocument *document, int page, 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)); + } +} + +static void +document_changed_callback (EvDocument *document, + EvView *view) +{ + gtk_widget_queue_draw (GTK_WIDGET (view)); + + if (view->cursor != EV_VIEW_CURSOR_HIDDEN) { + ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL); + } } /*** Public API ***/ @@ -409,14 +1184,284 @@ ev_view_set_document (EvView *view, g_return_if_fail (EV_IS_VIEW (view)); if (document != view->document) { - if (view->document) + if (view->document) { + g_signal_handlers_disconnect_by_func (view->document, + find_changed_cb, + view); g_object_unref (view->document); + } view->document = document; + view->find_page = 1; + view->find_result = 0; - if (view->document) + if (view->document) { g_object_ref (view->document); + if (EV_IS_DOCUMENT_FIND (view->document)) { + g_signal_connect (view->document, + "find_changed", + G_CALLBACK (find_changed_cb), + view); + } + g_signal_connect (view->document, + "changed", + G_CALLBACK (document_changed_callback), + 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); + } +} + +void +ev_view_set_mode (EvView *view, + EvSizingMode sizing_mode) +{ + if (view->sizing_mode == sizing_mode) + return; + + view->sizing_mode = sizing_mode; + gtk_widget_queue_resize (GTK_WIDGET (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) +{ + go_to_link (view, link); +} + +void +ev_view_set_page (EvView *view, + int page) +{ + g_return_if_fail (EV_IS_VIEW (view)); + + set_document_page (view, page); +} + +int +ev_view_get_page (EvView *view) +{ + if (view->document) + return ev_document_get_page (view->document); + else + return 1; +} + +static void +ev_view_zoom (EvView *view, + double factor, + gboolean relative) +{ + double scale; + + if (relative) + scale = view->scale * factor; + else + scale = factor; + + scale = CLAMP (scale, MIN_SCALE, MAX_SCALE); + + if (ABS (scale - view->scale) < ZOOM_EPSILON) + return; + + view->scale = scale; + + ev_document_set_scale (view->document, view->scale); + + gtk_widget_queue_resize (GTK_WIDGET (view)); +} + +void +ev_view_zoom_in (EvView *view) +{ + ev_view_zoom (view, ZOOM_IN_FACTOR, TRUE); +} + +void +ev_view_zoom_out (EvView *view) +{ + ev_view_zoom (view, ZOOM_OUT_FACTOR, TRUE); +} + +void +ev_view_normal_size (EvView *view) +{ + ev_view_zoom (view, 1.0, FALSE); +} + +/* Unfortunately this is not idempotent (!) (numerical stability + * issues because width and height are rounded) */ +void +ev_view_best_fit (EvView *view, int allocation_width, int allocation_height) +{ + int target_width, target_height; + int width, height; + GtkBorder border; + + if (view->document == NULL) + return; + + 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); + /* FIXME: The border size isn't constant. Ugh. Still, if we have extra + * space, we just cut it from the border */ + ev_document_misc_get_page_border_size (width, height, &border); + + target_width = allocation_width - (view->spacing * 2 + border.left + border.right); + target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom); + + LOG ("Best fit %d %d", allocation_width, allocation_height); + + if (width != 0 && height != 0) { + double scale; + double scale_w, scale_h; + + scale_w = (double)target_width * view->scale / width; + scale_h = (double)target_height * view->scale / height; + + scale = (scale_w < scale_h) ? scale_w : scale_h; + + ev_view_zoom (view, scale, FALSE); } + +} + +void +ev_view_fit_width (EvView *view, int allocation_width, int allocation_height, + int vsb_width) +{ + int target_width, target_height; + int width, height; + GtkBorder border; + + if (view->document == NULL) + return; + + width = height = 0; + ev_document_get_page_size (view->document, -1, &width, &height); + ev_document_misc_get_page_border_size (width, height, &border); + + target_width = allocation_width - (view->spacing * 2 + border.left + border.right); + target_height = allocation_height - (view->spacing * 2 + border.top + border.bottom); + + if (width) { + double scale; + scale = (double)target_width * view->scale / width; + + if (height * scale / view->scale > target_height) + scale = ((double)(target_width - vsb_width) * view->scale / width); + + ev_view_zoom (view, scale, FALSE); + } +} + +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; +} + +void +ev_view_find_next (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); + + 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 = 1; + } + + 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); + + n_results = ev_document_find_get_n_results (find); + n_pages = ev_document_get_n_pages (view->document); + + view->find_result--; + + if (view->find_result < 0) { + view->find_result = 0; + view->find_page--; + + if (view->find_page < 1) { + view->find_page = n_pages; + } + + jump_to_find_page (view); + } else { + jump_to_find_result (view); + gtk_widget_queue_draw (GTK_WIDGET (view)); + } +} +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_LINK); }