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/*
* sc_editor.h
*
* Copyright © 2014-2017 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 SC_EDITOR_H
#define SC_EDITOR_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include <glib-object.h>
#include "frame.h"
#include "sc_interp.h"
struct presentation;
#define SC_TYPE_EDITOR (sc_editor_get_type())
#define SC_EDITOR(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), \
SC_TYPE_EDITOR, SCEditor))
#define SC_IS_EDITOR(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), \
SC_TYPE_EDITOR))
#define SC_EDITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((obj), \
SC_TYPE_EDITOR, SCEditorClass))
#define SC_IS_EDITOR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((obj), \
SC_TYPE_EDITOR))
#define SC_EDITOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), \
SC_TYPE_EDITOR, SCEditorClass))
enum drag_reason
{
DRAG_REASON_NONE,
DRAG_REASON_CREATE,
DRAG_REASON_IMPORT,
DRAG_REASON_RESIZE,
DRAG_REASON_MOVE,
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 _sceditor
{
GtkDrawingArea parent_instance;
PangoLanguage *lang;
/*< private >*/
GtkIMContext *im_context;
int w; /* Surface size in pixels */
int h;
double log_w; /* Size of surface in "SC units" */
double log_h;
SCBlock *scblocks;
SCBlock **stylesheets;
ImageStore *is;
SCCallbackList *cbl;
struct frame *top;
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 SCEditor should scale to fit */
double view_scale; /* The scale factor, if scale=1 */
/* Pointers to the frame currently being edited */
struct frame *selection;
int top_editable;
PangoContext *pc;
/* Location of the cursor */
struct frame *cursor_frame;
int cursor_para; /* paragraph index */
size_t cursor_pos; /* byte offset into paragraph */
int cursor_trail;
/* 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;
/* Stuff that doesn't really belong here */
int slidenum;
};
struct _sceditorclass
{
GtkDrawingAreaClass parent_class;
};
typedef struct _sceditor SCEditor;
typedef struct _sceditorclass SCEditorClass;
extern void sc_editor_set_scblock(SCEditor *e, SCBlock *scblocks);
extern void sc_editor_set_stylesheets(SCEditor *e, SCBlock **stylesheets);
extern SCBlock *sc_editor_get_scblock(SCEditor *e);
extern GtkWidget *sc_editor_get_widget(SCEditor *e);
extern SCEditor *sc_editor_new(SCBlock *scblocks, SCBlock **stylesheets,
PangoLanguage *lang, const char *storename);
extern void sc_editor_set_size(SCEditor *e, int w, int h);
extern void sc_editor_set_logical_size(SCEditor *e, double w, double h);
extern void sc_editor_set_flow(SCEditor *e, int flow);
extern void sc_editor_set_scale(SCEditor *e, int scale);
extern void sc_editor_redraw(SCEditor *e);
extern void sc_editor_set_background(SCEditor *e, double r, double g, double b);
extern void sc_editor_set_slidenum(SCEditor *e, int slidenum);
extern void sc_editor_set_min_border(SCEditor *e, double min_border);
extern void sc_editor_set_top_frame_editable(SCEditor *e,
int top_frame_editable);
extern void sc_editor_set_callbacks(SCEditor *e, SCCallbackList *cbl);
extern void sc_editor_paste(SCEditor *e);
extern void sc_editor_add_storycode(SCEditor *e, const char *sc);
extern void sc_editor_copy_selected_frame(SCEditor *e);
extern void sc_editor_delete_selected_frame(SCEditor *e);
extern void sc_editor_remove_cursor(SCEditor *e);
extern SCBlock *split_paragraph_at_cursor(SCEditor *e);
extern void sc_editor_set_para_highlight(SCEditor *e, int para_highlight);
extern int sc_editor_get_cursor_para(SCEditor *e);
extern void *sc_editor_get_cursor_bvp(SCEditor *e);
extern void sc_editor_set_cursor_para(SCEditor *e, signed int pos);
extern int sc_editor_get_num_paras(SCEditor *e);
#endif /* SC_EDITOR_H */
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