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// SPDX-License-Identifier: GPL-2.0-or-later
/* this file is part of papers, a gnome document viewer
*
* Copyright (C) 2004 Red Hat, Inc
*/
#pragma once
#if !defined(PAPERS_COMPILATION)
#error "This is a private header."
#endif
#include "adwaita.h"
#include "factory/pps-element-widget-factory.h"
#include "pps-form-field.h"
#include "pps-image.h"
#include "pps-jobs.h"
#include "pps-page-cache.h"
#include "pps-pixbuf-cache.h"
#include "pps-selection.h"
#include "pps-view-cursor.h"
#include "pps-view.h"
/* Information for middle clicking and moving around the doc */
typedef struct
{
gdouble last_offset_x;
gdouble last_offset_y;
guint release_timeout_id;
gdouble momentum_x;
gdouble momentum_y;
gboolean in_notify;
} DragInfo;
/* Information for handling selection */
typedef struct
{
gdouble start_x;
gdouble start_y;
GList *selections;
PpsSelectionStyle style;
gdouble motion_x;
gdouble motion_y;
} SelectionInfo;
typedef enum {
SCROLL_TO_KEEP_POSITION,
SCROLL_TO_CENTER,
} PendingScroll;
typedef struct _PpsHeightToPageCache {
gint rotation;
gboolean dual_even_left;
gdouble *height_to_page;
gdouble *dual_height_to_page;
} PpsHeightToPageCache;
/* Information for handling link preview thumbnails */
typedef struct
{
PpsJob *job;
gdouble left;
gdouble top;
GtkWidget *popover;
PpsLink *link;
gint source_page;
guint delay_timeout_id;
} PpsLinkPreview;
typedef struct
{
gdouble start_x;
gdouble start_y;
gdouble stop_x;
gdouble stop_y;
} SigningInfo;
enum {
FORM_FACTORY,
WIDGET_FACTORY_COUNT
};
typedef struct _PpsViewPrivate {
/* Find */
PpsSearchContext *search_context;
PpsDocumentModel *model;
PpsPixbufCache *pixbuf_cache;
gsize pixbuf_cache_size;
PpsPageCache *page_cache;
PpsHeightToPageCache *height_to_page_cache;
PpsViewCursor cursor;
GPtrArray *page_widgets;
GtkRequisition requisition;
/* Scrolling */
GtkAdjustment *hadjustment;
GtkAdjustment *vadjustment;
/* GtkScrollablePolicy needs to be checked when
* driving the scrollable adjustment values */
guint hscroll_policy : 1;
guint vscroll_policy : 1;
guint update_cursor_idle_id;
PendingScroll pending_scroll;
gboolean needs_scrolling_to_current_page;
/* Animation for scrolling with keys */
AdwAnimation *scroll_animation_vertical;
AdwAnimation *scroll_animation_horizontal;
gboolean pending_scroll_animation;
/* Current geometry */
gint start_page;
gint end_page;
gint current_page;
gint spacing;
gboolean can_zoom_in;
gboolean can_zoom_out;
gboolean allow_links_change_zoom;
/* Key bindings propagation */
gboolean key_binding_handled;
/* Information for middle clicking and dragging around. */
DragInfo drag_info;
/* Selection */
gdouble motion_x;
gdouble motion_y;
guint selection_update_id;
guint selection_scroll_id;
SelectionInfo selection_info;
/* Copy link address selection */
PpsLinkAction *link_selected;
/* Image DND */
PpsImage *dnd_image;
/* Annotations */
PpsAnnotationsContext *annots_context;
gboolean enable_spellchecking;
/* Focus & Caret navigation */
PpsMapping *focused_element;
guint focused_element_page;
guint child_focus_idle_id;
gboolean caret_enabled;
gint cursor_offset;
gint cursor_page;
gdouble cursor_line_offset;
gboolean cursor_visible;
guint cursor_blink_timeout_id;
guint cursor_blink_time;
/* Gestures */
GtkGesture *middle_clicked_drag_gesture;
GtkGesture *middle_clicked_drag_swipe_gesture;
gdouble prev_zoom_gesture_scale;
/* Current zoom center */
gdouble zoom_center_x;
gdouble zoom_center_y;
/* Link preview */
PpsLinkPreview link_preview;
/* Signing Info */
SigningInfo signing_info;
GtkEventController *signing_drag_gesture;
/* Widgets Factory */
PpsElementWidgetFactory *widget_factories[WIDGET_FACTORY_COUNT];
} PpsViewPrivate;
struct _PpsViewClass {
GtkWidgetClass parent_class;
gboolean (*scroll) (PpsView *view,
GtkScrollType scroll,
GtkOrientation orientation);
void (*handle_link) (PpsView *view,
gint old_page,
PpsLink *link);
void (*external_link) (PpsView *view,
PpsLinkAction *action);
void (*popup_menu) (PpsView *view,
GList *items);
void (*selection_changed) (PpsView *view);
void (*annot_removed) (PpsView *view,
PpsAnnotation *annot);
void (*layers_changed) (PpsView *view);
gboolean (*move_cursor) (PpsView *view,
GtkMovementStep step,
gint count,
gboolean extend_selection);
void (*activate) (PpsView *view);
void (*signature_rect) (PpsView *view,
guint page,
PpsRectangle *rectangle);
};
void pps_view_get_page_extents (PpsView *view,
gint page,
GdkRectangle *page_area);
PpsPoint pps_view_get_point_on_page (PpsView *view,
gint page_index,
gdouble view_point_x,
gdouble view_point_y);
void _get_page_size_for_scale_and_rotation (PpsDocument *document,
gint page,
gdouble scale,
gint rotation,
gint *page_width,
gint *page_height);
void _pps_view_transform_doc_rect_to_view_rect (PpsView *view,
int page,
const PpsRectangle *doc_rect,
GdkRectangle *view_rect);
gint _pps_view_get_caret_cursor_offset_at_doc_point (PpsView *view,
gint page,
gdouble doc_x,
gdouble doc_y);
void _pps_view_clear_selection (PpsView *view);
void _pps_view_set_selection (PpsView *view,
gdouble start_x,
gdouble start_y,
gdouble stop_x,
gdouble stop_y);
void _pps_view_set_focused_element (PpsView *view,
PpsMapping *element_mapping,
gint page);
void _pps_view_focus_form_field (PpsView *view,
PpsFormField *field);
void _pps_view_ensure_rectangle_is_visible (PpsView *view,
gint page,
GdkRectangle *rect);
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