+/* -*- 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
*/
#include <gtk/gtkalignment.h>
+#include <glib/gi18n.h>
+#include <gtk/gtkbindings.h>
+#include <gtk/gtkselection.h>
+#include <gtk/gtkclipboard.h>
+#include <gdk/gdkkeysyms.h>
+#include <libgnomevfs/gnome-vfs-utils.h>
#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 {
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 ***/
{
EvView *view = EV_VIEW (object);
+ LOG ("Finalize");
+
if (view->document)
g_object_unref (view->document);
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
}
}
-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)
{
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);
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,
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
{
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
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;
}
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;
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),
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 ***/
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);
}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff