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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program 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.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __GDISPLAY_H__
#define __GDISPLAY_H__
#include "gimage.h"
#include "info_dialog.h"
#include "selection.h"
/*
* Global variables
*
*/
/* some useful macros */
#define SCALESRC(g) (g->scale & 0x00ff)
#define SCALEDEST(g) (g->scale >> 8)
#define SCALE(g,x) ((x * SCALEDEST(g)) / SCALESRC(g))
#define UNSCALE(g,x) ((x * SCALESRC(g)) / SCALEDEST(g))
#define LOWPASS(x) ((x>0) ? x : 0)
#define HIGHPASS(x,y) ((x>y) ? y : x)
typedef enum
{
SelectionOff,
SelectionLayerOff,
SelectionOn,
SelectionPause,
SelectionResume
} SelectionControl;
typedef struct _GDisplay GDisplay;
struct _GDisplay
{
int ID; /* unique identifier for this gdisplay */
GtkWidget *shell; /* shell widget for this gdisplay */
GtkWidget *canvas; /* canvas widget for this gdisplay */
GtkWidget *hsb, *vsb; /* widgets for scroll bars */
GtkWidget *hrule, *vrule; /* widgets for rulers */
GtkWidget *origin; /* widgets for rulers */
GtkWidget *popup; /* widget for popup menu */
InfoDialog *window_info_dialog; /* dialog box for image information */
int color_type; /* is this an RGB or GRAY colormap */
GtkAdjustment *hsbdata; /* horizontal data information */
GtkAdjustment *vsbdata; /* vertical data information */
GImage *gimage; /* pointer to the associated gimage struct */
int instance; /* the instance # of this gdisplay as */
/* taken from the gimage at creation */
int depth; /* depth of our drawables */
int disp_width; /* width of drawing area in the window */
int disp_height; /* height of drawing area in the window */
int disp_xoffset;
int disp_yoffset;
int offset_x, offset_y; /* offset of display image into raw image */
int scale; /* scale factor from original raw image */
short draw_guides; /* should the guides be drawn? */
short snap_to_guides; /* should the guides be snapped to? */
Selection *select; /* Selection object */
GdkGC *scroll_gc; /* GC for scrolling */
GSList *update_areas; /* Update areas list */
GSList *display_areas; /* Display areas list */
GdkCursorType current_cursor; /* Currently installed cursor */
};
/* member function declarations */
GDisplay * gdisplay_new (GImage *, unsigned int);
void gdisplay_remove_and_delete (GDisplay *);
int gdisplay_mask_value (GDisplay *, int, int);
int gdisplay_mask_bounds (GDisplay *, int *, int *, int *, int *);
void gdisplay_transform_coords (GDisplay *, int, int, int *, int *, int);
void gdisplay_untransform_coords (GDisplay *, int, int, int *,
int *, int, int);
void gdisplay_transform_coords_f (GDisplay *, double, double, double *,
double *, int);
void gdisplay_untransform_coords_f (GDisplay *, double, double, double *,
double *, int);
void gdisplay_install_tool_cursor (GDisplay *, GdkCursorType);
void gdisplay_remove_tool_cursor (GDisplay *);
void gdisplay_set_menu_sensitivity (GDisplay *);
void gdisplay_expose_area (GDisplay *, int, int, int, int);
void gdisplay_expose_guide (GDisplay *, Guide *);
void gdisplay_expose_full (GDisplay *);
void gdisplay_flush (GDisplay *);
void gdisplay_draw_guides (GDisplay *);
void gdisplay_draw_guide (GDisplay *, Guide *, int);
Guide* gdisplay_find_guide (GDisplay *, int, int);
void gdisplay_snap_point (GDisplay *, int , int, int *, int *);
void gdisplay_snap_rectangle (GDisplay *, int, int, int, int, int *, int *);
/* function declarations */
GDisplay * gdisplay_active (void);
GDisplay * gdisplay_get_ID (int);
void gdisplays_update_title (int);
void gdisplays_update_area (int, int, int, int, int);
void gdisplays_expose_guides (int);
void gdisplays_expose_guide (int, Guide *);
void gdisplays_update_full (int);
void gdisplays_shrink_wrap (int);
void gdisplays_expose_full (void);
void gdisplays_selection_visibility (int, SelectionControl);
int gdisplays_dirty (void);
void gdisplays_delete (void);
void gdisplays_flush (void);
#endif /* __GDISPLAY_H__ */
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