+/* -*- 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 <gdk/gdkkeysyms.h>
#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))
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
+
+ GArray *find_results;
+ int results_on_this_page;
+ int next_page_with_result;
+ double find_percent_complete;
+
+ double scale;
};
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);
ev_view_set_scroll_adjustments (view, NULL, NULL);
+ g_array_free (view->find_results, TRUE);
+ view->find_results = NULL;
+
G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
}
ev_view_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
- /* EvView *view = EV_VIEW (widget); */
+ EvView *view = EV_VIEW (widget);
+
+ if (GTK_WIDGET_REALIZED (widget)) {
+ if (view->document) {
+ ev_document_get_page_size (view->document,
+ &requisition->width,
+ &requisition->height);
+ } else {
+ requisition->width = 10;
+ requisition->height = 10;
+ }
+ }
- requisition->width = 500;
- requisition->height = 500;
}
static void
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_SCROLL_MASK |
+ GDK_KEY_PRESS_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;
-
+ 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);
+ }
+
update_window_backgrounds (view);
}
{
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);
}
expose_bin_window (GtkWidget *widget,
GdkEventExpose *event)
{
- /* EvView *view = EV_VIEW (widget); */
+ EvView *view = EV_VIEW (widget);
+ int i;
+ int current_page;
+ const EvFindResult *results;
+
+ 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 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)
+ 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);
+ ++i;
+ }
}
static gboolean
return GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event (widget, event);
return FALSE;
-
}
static gboolean
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)
+{
+ 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;
+ case GTK_SCROLL_PAGE_BACKWARD:
+ value -= adjustment->page_increment;
+ break;
+ case GTK_SCROLL_PAGE_FORWARD:
+ value += adjustment->page_increment;
+ break;
+ default:
+ break;
+ }
+
+ value = CLAMP (value, adjustment->lower, adjustment->upper - adjustment->page_size);
+
+ gtk_adjustment_set_value (adjustment, value);
+}
+
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;
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 ("find-status-changed",
+ G_OBJECT_CLASS_TYPE (object_class),
+ G_SIGNAL_RUN_LAST,
+ 0,
+ 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);
+
+ 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_SET_FLAGS (view, GTK_CAN_FOCUS);
+
+ view->scale = 1.0;
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 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 there are no results at all, then the
+ * results of ev_view_get_find_status_message() will change
+ * to reflect the percent_complete so we have to emit the signal
+ */
+ if (counts_changed ||
+ view->find_results->len == 0) {
+ g_signal_emit_by_name (view,
+ "find-status-changed");
+ }
+}
+
+static void
+found_results_callback (EvDocument *document,
+ const EvFindResult *results,
+ int n_results,
+ double percent_complete,
+ void *data)
+{
+ EvView *view = EV_VIEW (data);
+
+ g_array_set_size (view->find_results, 0);
+
+ 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));
}
/*** Public API ***/
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)
g_return_if_fail (EV_IS_VIEW (view));
if (document != view->document) {
- if (view->document)
+ int old_page = ev_view_get_page (view);
+
+ if (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)
+ if (view->document) {
g_object_ref (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))
+ ev_document_set_target (view->document, view->bin_window);
+
gtk_widget_queue_resize (GTK_WIDGET (view));
+
+ if (old_page != ev_view_get_page (view))
+ g_signal_emit (view, page_changed_signal, 0);
+ }
+}
+
+void
+ev_view_set_page (EvView *view,
+ int page)
+{
+ if (view->document) {
+ int old_page = ev_document_get_page (view->document);
+ if (old_page != page)
+ ev_document_set_page (view->document, page);
+ if (old_page != ev_document_get_page (view->document)) {
+ g_signal_emit (view, page_changed_signal, 0);
+
+ view->find_percent_complete = 0.0;
+ update_find_results (view);
+ }
+ }
+}
+
+int
+ev_view_get_page (EvView *view)
+{
+ if (view->document)
+ return ev_document_get_page (view->document);
+ else
+ return 1;
+}
+
+#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
+
+static void
+ev_view_zoom (EvView *view,
+ double factor,
+ gboolean relative)
+{
+ double scale;
+
+ if (relative)
+ scale = view->scale * factor;
+ else
+ scale = factor;
+
+ view->scale = CLAMP (scale, MIN_SCALE, MAX_SCALE);
+
+ ev_document_set_scale (view->document, view->scale);
+
+ gtk_widget_queue_draw (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);
+}
+
+void
+ev_view_best_fit (EvView *view)
+{
+ double scale;
+ int width, height;
+
+ width = height = 0;
+ ev_document_get_page_size (view->document, &width, &height);
+
+ scale = 1.0;
+ if (width != 0 && height != 0) {
+ double scale_w, scale_h;
+
+ scale_w = (double)GTK_WIDGET (view)->allocation.width * view->scale / width;
+ scale_h = (double)GTK_WIDGET (view)->allocation.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)
+{
+ double scale = 1.0;
+ int width;
+
+ width = 0;
+ ev_document_get_page_size (view->document, &width, NULL);
+
+ scale = 1.0;
+ if (width != 0)
+ scale = (double)GTK_WIDGET (view)->allocation.width * view->scale / width;
+
+ ev_view_zoom (view, scale, FALSE);
+}
+
+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);
}
}