mirror of
https://gitlab.gnome.org/GNOME/evince
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48f4198625
Signed-off-by: Qiu Wenbo <qiuwenbo@kylinos.com.cn> Signed-off-by: Pablo Correa Gomez <ablocorrea@hotmail.com>
360 lines
9.4 KiB
C
360 lines
9.4 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
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/* this file is part of evince, a gnome document viewer
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*
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* Copyright (C) 2004 Red Hat, Inc
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*
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* Evince is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Evince is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#if !defined (EVINCE_COMPILATION)
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#error "This is a private header."
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#endif
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#include "ev-view.h"
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#include "ev-document-model.h"
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#include "ev-pixbuf-cache.h"
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#include "ev-page-cache.h"
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#include "ev-jobs.h"
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#include "ev-image.h"
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#include "ev-form-field.h"
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#include "ev-selection.h"
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#include "ev-view-cursor.h"
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#define DRAG_HISTORY 10
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/* Information for middle clicking and moving around the doc */
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typedef struct {
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gboolean in_drag;
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GdkPoint start;
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gdouble hadj;
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gdouble vadj;
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guint drag_timeout_id;
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guint release_timeout_id;
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GdkPoint buffer[DRAG_HISTORY];
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GdkPoint momentum;
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gboolean in_notify;
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} DragInfo;
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/* Autoscrolling */
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typedef struct {
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gboolean autoscrolling;
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guint last_y;
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guint start_y;
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guint timeout_id;
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} AutoScrollInfo;
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/* Information for handling selection */
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typedef struct {
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gboolean in_drag;
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GdkPoint start;
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GList *selections;
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EvSelectionStyle style;
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} SelectionInfo;
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/* Information for handling images DND */
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typedef struct {
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gboolean in_drag;
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GdkPoint start;
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EvImage *image;
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} ImageDNDInfo;
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typedef enum {
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EV_PAN_ACTION_NONE,
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EV_PAN_ACTION_NEXT,
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EV_PAN_ACTION_PREV
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} EvPanAction;
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/* Annotation popup windows */
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typedef struct {
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GtkWidget *window;
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guint page;
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/* Current position */
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gint x;
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gint y;
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/* EvView root position */
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gint parent_x;
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gint parent_y;
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/* Document coords */
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gdouble orig_x;
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gdouble orig_y;
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gboolean visible;
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gboolean moved;
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} EvViewWindowChild;
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typedef enum {
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SCROLL_TO_KEEP_POSITION,
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SCROLL_TO_PAGE_POSITION,
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SCROLL_TO_CENTER,
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SCROLL_TO_FIND_LOCATION,
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} PendingScroll;
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typedef struct _EvHeightToPageCache {
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gint rotation;
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gboolean dual_even_left;
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gdouble *height_to_page;
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gdouble *dual_height_to_page;
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} EvHeightToPageCache;
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/* Information for handling annotations */
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typedef struct {
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GdkPoint start;
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GdkPoint stop;
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gboolean adding_annot;
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EvAnnotationType type;
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EvAnnotation *annot;
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} AddingAnnotInfo;
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typedef struct {
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GdkPoint start;
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EvPoint cursor_offset;
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gboolean annot_clicked;
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gboolean moving_annot;
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EvAnnotation *annot;
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} MovingAnnotInfo;
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/* Information for handling link preview thumbnails */
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typedef struct {
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EvJob *job;
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gdouble left;
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gdouble top;
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GtkWidget *popover;
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EvLink *link;
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guint delay_timeout_id;
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} EvLinkPreview;
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struct _EvView {
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GtkContainer layout;
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/* Container */
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GList *children;
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EvDocument *document;
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/* Find */
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EvJobFind *find_job;
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GList **find_pages; /* Backwards compatibility. Contains EvFindRectangles's elements per page */
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gint find_page; /* Page of active find result */
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gint find_result; /* Index of active find result on find_pages[find_page]. For matches across
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* two lines (which comprise two EvFindRectangle's), this will always point
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* to the first one, i.e. the one where rect->next_line is TRUE */
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gboolean jump_to_find_result;
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gboolean highlight_find_results;
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EvDocumentModel *model;
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EvPixbufCache *pixbuf_cache;
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gsize pixbuf_cache_size;
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EvPageCache *page_cache;
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EvHeightToPageCache *height_to_page_cache;
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EvViewCursor cursor;
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EvJobRender *current_job;
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GtkRequisition requisition;
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gboolean internal_size_request;
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/* Scrolling */
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GtkAdjustment *hadjustment;
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GtkAdjustment *vadjustment;
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/* GtkScrollablePolicy needs to be checked when
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* driving the scrollable adjustment values */
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guint hscroll_policy : 1;
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guint vscroll_policy : 1;
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gint scroll_x;
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gint scroll_y;
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guint update_cursor_idle_id;
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/* Delta sum for emulating normal scrolling */
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gdouble total_delta;
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PendingScroll pending_scroll;
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gboolean pending_resize;
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EvPoint pending_point;
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/* Current geometry */
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gint start_page;
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gint end_page;
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gint current_page;
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gint rotation;
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gdouble scale;
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gint spacing;
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gboolean loading;
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gboolean can_zoom_in;
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gboolean can_zoom_out;
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gboolean continuous;
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gboolean dual_even_left;
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gboolean fullscreen;
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EvSizingMode sizing_mode;
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EvPageLayout page_layout;
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GtkWidget *loading_window;
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guint loading_timeout;
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gboolean allow_links_change_zoom;
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/* Common for button press handling */
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int pressed_button;
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/* Key bindings propagation */
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gboolean key_binding_handled;
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/* Information for middle clicking and dragging around. */
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DragInfo drag_info;
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/* Autoscrolling */
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AutoScrollInfo scroll_info;
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/* Selection */
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GdkPoint motion;
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guint selection_update_id;
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guint selection_scroll_id;
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SelectionInfo selection_info;
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/* Copy link address selection */
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EvLinkAction *link_selected;
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/* Image DND */
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ImageDNDInfo image_dnd_info;
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/* Annotations */
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GList *window_children;
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EvViewWindowChild *window_child_focus;
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AddingAnnotInfo adding_annot_info;
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MovingAnnotInfo moving_annot_info;
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GHashTable *annot_window_map;
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gboolean enable_spellchecking;
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/* Focus */
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EvMapping *focused_element;
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guint focused_element_page;
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guint child_focus_idle_id;
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/* Synctex */
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EvMapping *synctex_result;
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/* Accessibility */
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AtkObject *accessible;
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/* Caret navigation */
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gboolean caret_enabled;
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gint cursor_offset;
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gint cursor_page;
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gdouble cursor_line_offset;
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gboolean cursor_visible;
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guint cursor_blink_timeout_id;
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guint cursor_blink_time;
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/* Gestures */
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GtkGesture *pan_gesture;
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GtkGesture *zoom_gesture;
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gdouble prev_zoom_gesture_scale;
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EvPanAction pan_action;
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/* Current zoom center */
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gdouble zoom_center_x;
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gdouble zoom_center_y;
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/* Link preview */
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EvLinkPreview link_preview;
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};
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struct _EvViewClass {
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GtkContainerClass parent_class;
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void (*scroll) (EvView *view,
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GtkScrollType scroll,
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GtkOrientation orientation);
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void (*handle_link) (EvView *view,
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gint old_page,
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EvLink *link);
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void (*external_link) (EvView *view,
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EvLinkAction *action);
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void (*popup_menu) (EvView *view,
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GList *items);
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void (*selection_changed) (EvView *view);
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void (*sync_source) (EvView *view,
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EvSourceLink *link);
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void (*annot_added) (EvView *view,
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EvAnnotation *annot);
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void (*annot_cancel_add) (EvView *view);
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void (*annot_changed) (EvView *view,
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EvAnnotation *annot);
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void (*annot_removed) (EvView *view,
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EvAnnotation *annot);
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void (*layers_changed) (EvView *view);
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gboolean (*move_cursor) (EvView *view,
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GtkMovementStep step,
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gint count,
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gboolean extend_selection);
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void (*activate) (EvView *view);
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};
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void _get_page_size_for_scale_and_rotation (EvDocument *document,
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gint page,
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gdouble scale,
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gint rotation,
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gint *page_width,
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gint *page_height);
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void _ev_view_transform_view_point_to_doc_point (EvView *view,
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GdkPoint *view_point,
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GdkRectangle *page_area,
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GtkBorder *border,
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double *doc_point_x,
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double *doc_point_y);
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void _ev_view_transform_view_rect_to_doc_rect (EvView *view,
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GdkRectangle *view_rect,
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GdkRectangle *page_area,
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GtkBorder *border,
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EvRectangle *doc_rect);
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void _ev_view_transform_doc_point_to_view_point (EvView *view,
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int page,
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EvPoint *doc_point,
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GdkPoint *view_point);
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void _ev_view_transform_doc_point_by_rotation_scale (EvView *view,
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int page,
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EvPoint *doc_point,
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GdkPoint *view_point);
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void _ev_view_transform_doc_rect_to_view_rect (EvView *view,
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int page,
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EvRectangle *doc_rect,
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GdkRectangle *view_rect);
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void _ev_view_get_selection_colors (EvView *view,
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GdkRGBA *bg_color,
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GdkRGBA *fg_color);
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gint _ev_view_get_caret_cursor_offset_at_doc_point (EvView *view,
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gint page,
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gdouble doc_x,
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gdouble doc_y);
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void _ev_view_clear_selection (EvView *view);
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void _ev_view_set_selection (EvView *view,
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GdkPoint *start_point,
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GdkPoint *end_point);
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void _ev_view_set_focused_element (EvView *view,
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EvMapping *element_mapping,
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gint page);
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void _ev_view_focus_form_field (EvView *view,
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EvFormField *field);
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void _ev_view_ensure_rectangle_is_visible (EvView *view,
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GdkRectangle *rect);
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