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/*
* gtknarrativeview.h
*
* Copyright © 2014-2019 Thomas White <taw@bitwiz.org.uk>
*
* This file is part of Colloquium.
*
* Colloquium 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 3 of the License, or
* (at your option) any later version.
*
* This program 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef GTK_NARRATIVE_VIEW_H
#define GTK_NARRATIVE_VIEW_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include <glib-object.h>
#include <stylesheet.h>
#include <narrative.h>
#include <presentation.h>
#define GTK_TYPE_NARRATIVE_VIEW (gtk_narrative_view_get_type())
#define GTK_NARRATIVE_VIEW(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), \
GTK_TYPE_NARRATIVE_VIEW, GtkNarrativeView))
#define GTK_IS_NARRATIVE_VIEW(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), \
GTK_TYPE_NARRATIVE_VIEW))
#define GTK_NARRATIVE_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((obj), \
GTK_TYPE_NARRATIVE_VIEW, GtkNarrativeViewClass))
#define GTK_IS_NARRATIVE_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((obj), \
GTK_TYPE_NARRATIVE_VIEW))
#define GTK_NARRATIVE_VIEW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), \
GTK_TYPE_NARRATIVE_VIEW, GtkNarrativeViewClass))
enum drag_reason
{
DRAG_REASON_NONE,
DRAG_REASON_IMPORT,
DRAG_REASON_TEXTSEL
};
enum corner
{
CORNER_NONE,
CORNER_TL,
CORNER_TR,
CORNER_BL,
CORNER_BR
};
enum drag_status
{
DRAG_STATUS_NONE,
DRAG_STATUS_COULD_DRAG,
DRAG_STATUS_DRAGGING,
};
struct edit_pos
{
int para; /* Paragraph number */
size_t pos; /* Byte position within paragraph
* Yes, really. See pango_layout_xy_to_index */
int trail;
};
struct _gtknarrativeview
{
GtkDrawingArea parent_instance;
/*< private >*/
GtkIMContext *im_context;
PangoContext *pc;
PangoLanguage *lang;
int w; /* Surface size in pixels */
int h;
double log_w; /* Size of surface in "SC units" */
double log_h;
int para_highlight;
/* Redraw/scroll stuff */
GtkScrollablePolicy hpol;
GtkScrollablePolicy vpol;
GtkAdjustment *hadj;
GtkAdjustment *vadj;
double scroll_pos;
double h_scroll_pos;
int visible_height;
int visible_width;
int flow;
int scale; /* Whether the GtkNarrativeView should scale to fit */
double view_scale; /* The scale factor, if scale=1 */
/* Location of the cursor */
struct edit_pos cpos;
/* Border surrounding actual slide within drawingarea */
double border_offs_x;
double border_offs_y;
double min_border;
double bgcol[3];
GdkPixbuf *bg_pixbuf;
/* Rubber band boxes and related stuff */
double start_corner_x;
double start_corner_y;
double drag_corner_x;
double drag_corner_y;
double diagonal_length;
double box_x;
double box_y;
double box_width;
double box_height;
enum drag_reason drag_reason;
enum drag_status drag_status;
enum corner drag_corner;
int sel_active;
struct edit_pos sel_start; /* Where the user dragged from */
struct edit_pos sel_end;
/* Stuff to do with drag and drop import of "content" */
int drag_preview_pending;
int have_drag_data;
int drag_highlight;
double import_width;
double import_height;
int import_acceptable;
};
struct _gtknarrativeviewclass
{
GtkDrawingAreaClass parent_class;
};
typedef struct _gtknarrativeview GtkNarrativeView;
typedef struct _gtknarrativeviewclass GtkNarrativeViewClass;
extern GtkNarrativeView *gtk_narrative_view_new(Presentation *p,
PangoLanguage *lang,
const char *storename);
extern void gtk_narrative_view_set_logical_size(GtkNarrativeView *e, double w, double h);
extern void gtk_narrative_view_paste(GtkNarrativeView *e);
extern void gtk_narrative_view_set_para_highlight(GtkNarrativeView *e, int para_highlight);
extern int gtk_narrative_view_get_cursor_para(GtkNarrativeView *e);
extern void gtk_narrative_view_set_cursor_para(GtkNarrativeView *e, signed int pos);
#endif /* GTK_NARRATIVE_VIEW_H */
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