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ev-view-presentation.c
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ev-view-presentation.c
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/* ev-view-presentation.c
* this file is part of atril, a mate document viewer
*
* Copyright (C) 2010 Carlos Garcia Campos <carlosgc@gnome.org>
*
* Atril is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Atril is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <glib/gi18n-lib.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <gdk/gdkkeysyms.h>
#include "ev-view-presentation.h"
#include "ev-jobs.h"
#include "ev-job-scheduler.h"
#include "ev-transition-animation.h"
#include "ev-view-cursor.h"
#include "ev-page-cache.h"
enum {
PROP_0,
PROP_DOCUMENT,
PROP_CURRENT_PAGE,
PROP_ROTATION,
PROP_INVERTED_COLORS
};
enum {
CHANGE_PAGE,
FINISHED,
SIGNAL_EXTERNAL_LINK,
N_SIGNALS
};
typedef enum {
EV_PRESENTATION_NORMAL,
EV_PRESENTATION_BLACK,
EV_PRESENTATION_WHITE,
EV_PRESENTATION_END
} EvPresentationState;
struct _EvViewPresentation
{
GtkWidget base;
guint is_constructing : 1;
guint current_page;
cairo_surface_t *current_surface;
EvDocument *document;
guint rotation;
gboolean inverted_colors;
EvPresentationState state;
gdouble scale;
gint monitor_width;
gint monitor_height;
/* Cursors */
EvViewCursor cursor;
guint hide_cursor_timeout_id;
/* Goto Window */
GtkWidget *goto_window;
GtkWidget *goto_entry;
/* Page Transition */
guint trans_timeout_id;
/* Animations */
gboolean enable_animations;
EvTransitionAnimation *animation;
/* Links */
EvPageCache *page_cache;
EvJob *prev_job;
EvJob *curr_job;
EvJob *next_job;
};
struct _EvViewPresentationClass
{
GtkWidgetClass base_class;
/* signals */
void (* change_page) (EvViewPresentation *pview,
GtkScrollType scroll);
void (* finished) (EvViewPresentation *pview);
void (* external_link) (EvViewPresentation *pview,
EvLinkAction *action);
};
static guint signals[N_SIGNALS] = { 0 };
static void ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
gdouble x,
gdouble y);
#define HIDE_CURSOR_TIMEOUT 5
G_DEFINE_TYPE (EvViewPresentation, ev_view_presentation, GTK_TYPE_WIDGET)
static void
ev_view_presentation_set_normal (EvViewPresentation *pview)
{
GtkWidget *widget = GTK_WIDGET (pview);
if (pview->state == EV_PRESENTATION_NORMAL)
return;
pview->state = EV_PRESENTATION_NORMAL;
gtk_style_context_remove_class (gtk_widget_get_style_context (widget),
"white-mode");
gtk_widget_queue_draw (widget);
}
static void
ev_view_presentation_set_black (EvViewPresentation *pview)
{
GtkWidget *widget = GTK_WIDGET (pview);
if (pview->state == EV_PRESENTATION_BLACK)
return;
pview->state = EV_PRESENTATION_BLACK;
gtk_style_context_remove_class (gtk_widget_get_style_context (widget),
"white-mode");
gtk_widget_queue_draw (widget);
}
static void
ev_view_presentation_set_white (EvViewPresentation *pview)
{
GtkWidget *widget = GTK_WIDGET (pview);
if (pview->state == EV_PRESENTATION_WHITE)
return;
pview->state = EV_PRESENTATION_WHITE;
gtk_style_context_add_class (gtk_widget_get_style_context (widget),
"white-mode");
}
static void
ev_view_presentation_set_end (EvViewPresentation *pview)
{
GtkWidget *widget = GTK_WIDGET (pview);
if (pview->state == EV_PRESENTATION_END)
return;
pview->state = EV_PRESENTATION_END;
gtk_widget_queue_draw (widget);
}
static gdouble
ev_view_presentation_get_scale_for_page (EvViewPresentation *pview,
guint page)
{
if (!ev_document_is_page_size_uniform (pview->document) || pview->scale == 0) {
gdouble width, height;
ev_document_get_page_size (pview->document, page, &width, &height);
if (pview->rotation == 90 || pview->rotation == 270) {
gdouble tmp;
tmp = width;
width = height;
height = tmp;
}
pview->scale = MIN (pview->monitor_width / width, pview->monitor_height / height);
}
return pview->scale;
}
static void
ev_view_presentation_get_page_area (EvViewPresentation *pview,
GdkRectangle *area)
{
GtkWidget *widget = GTK_WIDGET (pview);
GtkAllocation allocation;
gdouble doc_width, doc_height;
gint view_width, view_height;
gdouble scale;
ev_document_get_page_size (pview->document,
pview->current_page,
&doc_width, &doc_height);
scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
if (pview->rotation == 90 || pview->rotation == 270) {
view_width = (gint)((doc_height * scale) + 0.5);
view_height = (gint)((doc_width * scale) + 0.5);
} else {
view_width = (gint)((doc_width * scale) + 0.5);
view_height = (gint)((doc_height * scale) + 0.5);
}
gtk_widget_get_allocation (widget, &allocation);
area->x = (MAX (0, allocation.width - view_width)) / 2;
area->y = (MAX (0, allocation.height - view_height)) / 2;
area->width = view_width;
area->height = view_height;
}
/* Page Transition */
static gboolean
transition_next_page (EvViewPresentation *pview)
{
ev_view_presentation_next_page (pview);
return FALSE;
}
static void
ev_view_presentation_transition_stop (EvViewPresentation *pview)
{
if (pview->trans_timeout_id > 0)
g_source_remove (pview->trans_timeout_id);
pview->trans_timeout_id = 0;
}
static void
ev_view_presentation_transition_start (EvViewPresentation *pview)
{
gdouble duration;
if (!EV_IS_DOCUMENT_TRANSITION (pview->document))
return;
ev_view_presentation_transition_stop (pview);
duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (pview->document),
pview->current_page);
if (duration >= 0) {
pview->trans_timeout_id =
g_timeout_add_seconds (duration,
(GSourceFunc) transition_next_page,
pview);
}
}
/* Animations */
static void
ev_view_presentation_animation_cancel (EvViewPresentation *pview)
{
if (pview->animation) {
g_object_unref (pview->animation);
pview->animation = NULL;
}
}
static void
ev_view_presentation_transition_animation_finish (EvViewPresentation *pview)
{
ev_view_presentation_animation_cancel (pview);
ev_view_presentation_transition_start (pview);
gtk_widget_queue_draw (GTK_WIDGET (pview));
}
static void
ev_view_presentation_transition_animation_frame (EvViewPresentation *pview,
gdouble progress)
{
gtk_widget_queue_draw (GTK_WIDGET (pview));
}
static cairo_surface_t *
get_surface_from_job (EvViewPresentation *pview,
EvJob *job)
{
cairo_surface_t *surface;
if (!job)
return NULL;
surface = EV_JOB_RENDER(job)->surface;
if (!surface)
return NULL;
return surface;
}
static void
ev_view_presentation_animation_start (EvViewPresentation *pview,
gint new_page)
{
EvTransitionEffect *effect = NULL;
EvJob *job;
cairo_surface_t *surface;
gint jump;
if (!pview->enable_animations)
return;
if (pview->current_page == new_page)
return;
effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (pview->document),
new_page);
if (!effect)
return;
pview->animation = ev_transition_animation_new (effect);
surface = pview->curr_job ? EV_JOB_RENDER (pview->curr_job)->surface : NULL;
ev_transition_animation_set_origin_surface (pview->animation,
surface != NULL ?
surface : pview->current_surface);
jump = new_page - pview->current_page;
if (jump == -1)
job = pview->prev_job;
else if (jump == 1)
job = pview->next_job;
else
job = NULL;
surface = get_surface_from_job (pview, job);
if (surface)
ev_transition_animation_set_dest_surface (pview->animation, surface);
g_signal_connect_swapped (pview->animation, "frame",
G_CALLBACK (ev_view_presentation_transition_animation_frame),
pview);
g_signal_connect_swapped (pview->animation, "finished",
G_CALLBACK (ev_view_presentation_transition_animation_finish),
pview);
}
/* Page Navigation */
static void
job_finished_cb (EvJob *job,
EvViewPresentation *pview)
{
EvJobRender *job_render = EV_JOB_RENDER (job);
if (pview->inverted_colors)
ev_document_misc_invert_surface (job_render->surface);
if (job != pview->curr_job)
return;
if (pview->animation) {
ev_transition_animation_set_dest_surface (pview->animation,
get_surface_from_job (pview, job));
} else {
ev_view_presentation_transition_start (pview);
gtk_widget_queue_draw (GTK_WIDGET (pview));
}
}
static EvJob *
ev_view_presentation_schedule_new_job (EvViewPresentation *pview,
gint page,
EvJobPriority priority)
{
EvJob *job;
gdouble scale;
if (page < 0 || page >= ev_document_get_n_pages (pview->document))
return NULL;
scale = ev_view_presentation_get_scale_for_page (pview, page);
job = ev_job_render_new (pview->document, page, pview->rotation, scale, 0, 0);
g_signal_connect (job, "finished",
G_CALLBACK (job_finished_cb),
pview);
ev_job_scheduler_push_job (job, priority);
return job;
}
static void
ev_view_presentation_delete_job (EvViewPresentation *pview,
EvJob *job)
{
if (!job)
return;
g_signal_handlers_disconnect_by_func (job, job_finished_cb, pview);
ev_job_cancel (job);
g_object_unref (job);
}
static void
ev_view_presentation_reset_jobs (EvViewPresentation *pview)
{
if (pview->curr_job) {
ev_view_presentation_delete_job (pview, pview->curr_job);
pview->curr_job = NULL;
}
if (pview->prev_job) {
ev_view_presentation_delete_job (pview, pview->prev_job);
pview->prev_job = NULL;
}
if (pview->next_job) {
ev_view_presentation_delete_job (pview, pview->next_job);
pview->next_job = NULL;
}
}
static void
ev_view_presentation_update_current_page (EvViewPresentation *pview,
guint page)
{
gint jump;
if (page < 0 || page >= ev_document_get_n_pages (pview->document))
return;
ev_view_presentation_animation_cancel (pview);
ev_view_presentation_animation_start (pview, page);
jump = page - pview->current_page;
switch (jump) {
case 0:
if (!pview->curr_job)
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
if (!pview->next_job)
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
if (!pview->prev_job)
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
break;
case -1:
ev_view_presentation_delete_job (pview, pview->next_job);
pview->next_job = pview->curr_job;
pview->curr_job = pview->prev_job;
if (!pview->curr_job)
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
else
ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
break;
case 1:
ev_view_presentation_delete_job (pview, pview->prev_job);
pview->prev_job = pview->curr_job;
pview->curr_job = pview->next_job;
if (!pview->curr_job)
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
else
ev_job_scheduler_update_job (pview->curr_job, EV_JOB_PRIORITY_URGENT);
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
break;
case -2:
ev_view_presentation_delete_job (pview, pview->next_job);
ev_view_presentation_delete_job (pview, pview->curr_job);
pview->next_job = pview->prev_job;
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
if (!pview->next_job)
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
else
ev_job_scheduler_update_job (pview->next_job, EV_JOB_PRIORITY_LOW);
break;
case 2:
ev_view_presentation_delete_job (pview, pview->prev_job);
ev_view_presentation_delete_job (pview, pview->curr_job);
pview->prev_job = pview->next_job;
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
if (!pview->prev_job)
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
else
ev_job_scheduler_update_job (pview->prev_job, EV_JOB_PRIORITY_LOW);
break;
default:
ev_view_presentation_delete_job (pview, pview->prev_job);
ev_view_presentation_delete_job (pview, pview->curr_job);
ev_view_presentation_delete_job (pview, pview->next_job);
pview->curr_job = ev_view_presentation_schedule_new_job (pview, page, EV_JOB_PRIORITY_URGENT);
if (jump > 0) {
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_HIGH);
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_LOW);
} else {
pview->prev_job = ev_view_presentation_schedule_new_job (pview, page - 1, EV_JOB_PRIORITY_HIGH);
pview->next_job = ev_view_presentation_schedule_new_job (pview, page + 1, EV_JOB_PRIORITY_LOW);
}
}
pview->current_page = page;
if (pview->page_cache)
ev_page_cache_set_page_range (pview->page_cache, page, page);
if (pview->cursor != EV_VIEW_CURSOR_HIDDEN) {
gint x, y;
ev_document_misc_get_pointer_position (GTK_WIDGET (pview), &x, &y);
ev_view_presentation_set_cursor_for_location (pview, x, y);
}
if (EV_JOB_RENDER (pview->curr_job)->surface)
gtk_widget_queue_draw (GTK_WIDGET (pview));
}
void
ev_view_presentation_next_page (EvViewPresentation *pview)
{
guint n_pages;
gint new_page;
switch (pview->state) {
case EV_PRESENTATION_BLACK:
case EV_PRESENTATION_WHITE:
ev_view_presentation_set_normal (pview);
case EV_PRESENTATION_END:
return;
case EV_PRESENTATION_NORMAL:
break;
}
n_pages = ev_document_get_n_pages (pview->document);
new_page = pview->current_page + 1;
if (new_page == n_pages)
ev_view_presentation_set_end (pview);
else
ev_view_presentation_update_current_page (pview, new_page);
}
void
ev_view_presentation_previous_page (EvViewPresentation *pview)
{
gint new_page = 0;
switch (pview->state) {
case EV_PRESENTATION_BLACK:
case EV_PRESENTATION_WHITE:
ev_view_presentation_set_normal (pview);
return;
case EV_PRESENTATION_END:
pview->state = EV_PRESENTATION_NORMAL;
new_page = pview->current_page;
break;
case EV_PRESENTATION_NORMAL:
new_page = pview->current_page - 1;
break;
}
ev_view_presentation_update_current_page (pview, new_page);
}
/* Goto Window */
#define KEY_IS_NUMERIC(keyval) \
((keyval >= GDK_KEY_0 && keyval <= GDK_KEY_9) || (keyval >= GDK_KEY_KP_0 && keyval <= GDK_KEY_KP_9))
/* Cut and paste from gtkwindow.c */
static void
send_focus_change (GtkWidget *widget,
gboolean in)
{
GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
fevent->focus_change.type = GDK_FOCUS_CHANGE;
fevent->focus_change.window = gtk_widget_get_window (widget);
fevent->focus_change.in = in;
if (fevent->focus_change.window)
g_object_ref (fevent->focus_change.window);
gtk_widget_send_focus_change (widget, fevent);
gdk_event_free (fevent);
}
static void
ev_view_presentation_goto_window_hide (EvViewPresentation *pview)
{
/* send focus-in event */
send_focus_change (pview->goto_entry, FALSE);
gtk_widget_hide (pview->goto_window);
gtk_entry_set_text (GTK_ENTRY (pview->goto_entry), "");
}
static gboolean
ev_view_presentation_goto_window_delete_event (GtkWidget *widget,
GdkEventAny *event,
EvViewPresentation *pview)
{
ev_view_presentation_goto_window_hide (pview);
return TRUE;
}
static gboolean
ev_view_presentation_goto_window_key_press_event (GtkWidget *widget,
GdkEventKey *event,
EvViewPresentation *pview)
{
switch (event->keyval) {
case GDK_KEY_Escape:
case GDK_KEY_Tab:
case GDK_KEY_KP_Tab:
case GDK_KEY_ISO_Left_Tab:
ev_view_presentation_goto_window_hide (pview);
return TRUE;
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
case GDK_KEY_ISO_Enter:
case GDK_KEY_BackSpace:
case GDK_KEY_Delete:
return FALSE;
default:
if (!KEY_IS_NUMERIC (event->keyval))
return TRUE;
}
return FALSE;
}
static gboolean
ev_view_presentation_goto_window_button_press_event (GtkWidget *widget,
GdkEventButton *event,
EvViewPresentation *pview)
{
ev_view_presentation_goto_window_hide (pview);
return TRUE;
}
static void
ev_view_presentation_goto_entry_activate (GtkEntry *entry,
EvViewPresentation *pview)
{
const gchar *text;
gint page;
text = gtk_entry_get_text (entry);
page = atoi (text) - 1;
ev_view_presentation_goto_window_hide (pview);
ev_view_presentation_update_current_page (pview, page);
}
static void
ev_view_presentation_goto_window_create (EvViewPresentation *pview)
{
GtkWidget *frame, *hbox, *label;
GtkWindow *toplevel, *goto_window;
toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (pview)));
goto_window = GTK_WINDOW (pview->goto_window);
if (pview->goto_window) {
if (gtk_window_has_group (toplevel))
gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
else if (gtk_window_has_group (goto_window))
gtk_window_group_remove_window (gtk_window_get_group (goto_window), goto_window);
return;
}
pview->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
gtk_window_set_screen (goto_window, gtk_widget_get_screen (GTK_WIDGET (pview)));
if (gtk_window_has_group (toplevel))
gtk_window_group_add_window (gtk_window_get_group (toplevel), goto_window);
gtk_window_set_modal (goto_window, TRUE);
g_signal_connect (pview->goto_window, "delete_event",
G_CALLBACK (ev_view_presentation_goto_window_delete_event),
pview);
g_signal_connect (pview->goto_window, "key_press_event",
G_CALLBACK (ev_view_presentation_goto_window_key_press_event),
pview);
g_signal_connect (pview->goto_window, "button_press_event",
G_CALLBACK (ev_view_presentation_goto_window_button_press_event),
pview);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
gtk_container_add (GTK_CONTAINER (pview->goto_window), frame);
gtk_widget_show (frame);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
label = gtk_label_new (_("Jump to page:"));
gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
gtk_widget_show (label);
gtk_widget_realize (label);
pview->goto_entry = gtk_entry_new ();
g_signal_connect (pview->goto_entry, "activate",
G_CALLBACK (ev_view_presentation_goto_entry_activate),
pview);
gtk_box_pack_start (GTK_BOX (hbox), pview->goto_entry, TRUE, TRUE, 0);
gtk_widget_show (pview->goto_entry);
gtk_widget_realize (pview->goto_entry);
}
static void
ev_view_presentation_goto_entry_grab_focus (EvViewPresentation *pview)
{
GtkWidgetClass *entry_parent_class;
entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (pview->goto_entry));
(entry_parent_class->grab_focus) (pview->goto_entry);
send_focus_change (pview->goto_entry, TRUE);
}
static void
ev_view_presentation_goto_window_send_key_event (EvViewPresentation *pview,
GdkEvent *event)
{
GdkEventKey *new_event;
GdkScreen *screen;
/* Move goto window off screen */
screen = gtk_widget_get_screen (GTK_WIDGET (pview));
gtk_window_move (GTK_WINDOW (pview->goto_window),
WidthOfScreen (gdk_x11_screen_get_xscreen (screen)) + 1,
HeightOfScreen (gdk_x11_screen_get_xscreen (screen)) + 1);
gtk_widget_show (pview->goto_window);
new_event = (GdkEventKey *) gdk_event_copy (event);
g_object_unref (new_event->window);
new_event->window = gtk_widget_get_window (pview->goto_window);
if (new_event->window)
g_object_ref (new_event->window);
gtk_widget_realize (pview->goto_window);
gtk_widget_event (pview->goto_window, (GdkEvent *)new_event);
gdk_event_free ((GdkEvent *)new_event);
gtk_widget_hide (pview->goto_window);
}
/* Links */
static gboolean
ev_view_presentation_link_is_supported (EvViewPresentation *pview,
EvLink *link)
{
EvLinkAction *action;
action = ev_link_get_action (link);
if (!action)
return FALSE;
switch (ev_link_action_get_action_type (action)) {
case EV_LINK_ACTION_TYPE_GOTO_DEST:
return ev_link_action_get_dest (action) != NULL;
case EV_LINK_ACTION_TYPE_NAMED:
case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
case EV_LINK_ACTION_TYPE_LAUNCH:
return TRUE;
default:
return FALSE;
}
return FALSE;
}
static EvLink *
ev_view_presentation_get_link_at_location (EvViewPresentation *pview,
gdouble x,
gdouble y)
{
GdkRectangle page_area;
EvMappingList *link_mapping;
EvLink *link;
gdouble width, height;
gdouble new_x, new_y;
gdouble scale;
if (!pview->page_cache)
return NULL;
ev_document_get_page_size (pview->document, pview->current_page, &width, &height);
ev_view_presentation_get_page_area (pview, &page_area);
scale = ev_view_presentation_get_scale_for_page (pview, pview->current_page);
x = (x - page_area.x) / scale;
y = (y - page_area.y) / scale;
switch (pview->rotation) {
case 0:
case 360:
new_x = x;
new_y = y;
break;
case 90:
new_x = y;
new_y = height - x;
break;
case 180:
new_x = width - x;
new_y = height - y;
break;
case 270:
new_x = width - y;
new_y = x;
break;
default:
g_assert_not_reached ();
}
link_mapping = ev_page_cache_get_link_mapping (pview->page_cache, pview->current_page);
link = link_mapping ? ev_mapping_list_get_data (link_mapping, new_x, new_y) : NULL;
return link && ev_view_presentation_link_is_supported (pview, link) ? link : NULL;
}
static void
ev_vew_presentation_handle_link (EvViewPresentation *pview,
EvLink *link)
{
EvLinkAction *action;
action = ev_link_get_action (link);
switch (ev_link_action_get_action_type (action)) {
case EV_LINK_ACTION_TYPE_NAMED: {
const gchar *name = ev_link_action_get_name (action);
if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
ev_view_presentation_update_current_page (pview, 0);
} else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
ev_view_presentation_update_current_page (pview, pview->current_page - 1);
} else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
ev_view_presentation_update_current_page (pview, pview->current_page + 1);
} else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
gint n_pages;
n_pages = ev_document_get_n_pages (pview->document);
ev_view_presentation_update_current_page (pview, n_pages - 1);
}
}
break;
case EV_LINK_ACTION_TYPE_GOTO_DEST: {
EvLinkDest *dest;
gint page;
dest = ev_link_action_get_dest (action);
page = ev_document_links_get_dest_page (EV_DOCUMENT_LINKS (pview->document), dest);
ev_view_presentation_update_current_page (pview, page);
}
break;
case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
case EV_LINK_ACTION_TYPE_LAUNCH:
g_signal_emit (pview, signals[SIGNAL_EXTERNAL_LINK], 0, action);
break;
default:
break;
}
}
/* Cursors */
static void
ev_view_presentation_set_cursor (EvViewPresentation *pview,
EvViewCursor view_cursor)
{
GtkWidget *widget;
GdkCursor *cursor;
if (pview->cursor == view_cursor)
return;
widget = GTK_WIDGET (pview);
if (!gtk_widget_get_realized (widget))
gtk_widget_realize (widget);
pview->cursor = view_cursor;
cursor = ev_view_cursor_new (gtk_widget_get_display (widget), view_cursor);
gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
gdk_flush ();
if (cursor)
g_object_unref (cursor);
}
static void
ev_view_presentation_set_cursor_for_location (EvViewPresentation *pview,
gdouble x,
gdouble y)
{
if (ev_view_presentation_get_link_at_location (pview, x, y))
ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_LINK);
else
ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_NORMAL);
}
static gboolean
hide_cursor_timeout_cb (EvViewPresentation *pview)
{
ev_view_presentation_set_cursor (pview, EV_VIEW_CURSOR_HIDDEN);
pview->hide_cursor_timeout_id = 0;
return FALSE;
}
static void
ev_view_presentation_hide_cursor_timeout_stop (EvViewPresentation *pview)
{
if (pview->hide_cursor_timeout_id > 0)
g_source_remove (pview->hide_cursor_timeout_id);
pview->hide_cursor_timeout_id = 0;
}
static void
ev_view_presentation_hide_cursor_timeout_start (EvViewPresentation *pview)
{
ev_view_presentation_hide_cursor_timeout_stop (pview);
pview->hide_cursor_timeout_id =
g_timeout_add_seconds (HIDE_CURSOR_TIMEOUT,
(GSourceFunc)hide_cursor_timeout_cb,
pview);
}
static void
ev_view_presentation_update_current_surface (EvViewPresentation *pview,
cairo_surface_t *surface)
{
if (!surface || pview->current_surface == surface)
return;
cairo_surface_reference (surface);
if (pview->current_surface)
cairo_surface_destroy (pview->current_surface);
pview->current_surface = surface;
}
static void
ev_view_presentation_dispose (GObject *object)
{
EvViewPresentation *pview = EV_VIEW_PRESENTATION (object);
if (pview->document) {
g_object_unref (pview->document);
pview->document = NULL;
}
ev_view_presentation_animation_cancel (pview);
ev_view_presentation_transition_stop (pview);
ev_view_presentation_hide_cursor_timeout_stop (pview);
ev_view_presentation_reset_jobs (pview);
if (pview->current_surface) {
cairo_surface_destroy (pview->current_surface);
pview->current_surface = NULL;
}
if (pview->page_cache) {
g_object_unref (pview->page_cache);
pview->page_cache = NULL;
}
if (pview->goto_window) {
gtk_widget_destroy (pview->goto_window);
pview->goto_window = NULL;
pview->goto_entry = NULL;
}
G_OBJECT_CLASS (ev_view_presentation_parent_class)->dispose (object);
}
static void
ev_view_presentation_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
*minimum = *natural = 0;
}
static void
ev_view_presentation_get_preferred_height (GtkWidget *widget,