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gimp/app/gdisplay.h
BST 1999 Andy Thomas f380edd704 app/gdisplay.c app/gdisplay.h app/interface.c app/nav_window.c 
Wed Sep  1 23:18:21 BST 1999 Andy Thomas <alt@gimp.org>

	* app/gdisplay.c
	* app/gdisplay.h
	* app/interface.c
	* app/nav_window.c
	* app/nav_window.h
	* pixmap/navbutton.xpm (new)

	New popup navigation window. press the icon that appears in
	the bottom right-hand corner of the image display. A navigation
	window will appear that will allow you to scroll around the image if
	the area shown is smaller than the overall image size. Thanks to tml
        for the idea.
1999-09-01 22:39:44 +00:00

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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"
#include "gdisplayF.h"
/*
* Global variables
*
*/
/* some useful macros */
/* unpacking the user scale level (char) */
#define SCALESRC(g) (g->scale & 0x00ff)
#define SCALEDEST(g) (g->scale >> 8)
/* finding the effective screen resolution (double) */
#define SCREEN_XRES(g) (g->dot_for_dot? g->gimage->xresolution : monitor_xres)
#define SCREEN_YRES(g) (g->dot_for_dot? g->gimage->yresolution : monitor_yres)
/* calculate scale factors (double) */
#define SCALEFACTOR_X(g) ((SCALEDEST(g) * SCREEN_XRES(g)) / \
(SCALESRC(g) * g->gimage->xresolution))
#define SCALEFACTOR_Y(g) ((SCALEDEST(g) * SCREEN_YRES(g)) / \
(SCALESRC(g) * g->gimage->yresolution))
/* scale values */
#define SCALEX(g,x) ((int)(x * SCALEFACTOR_X(g)))
#define SCALEY(g,y) ((int)(y * SCALEFACTOR_Y(g)))
/* unscale values */
#define UNSCALEX(g,x) ((int)(x / SCALEFACTOR_X(g)))
#define UNSCALEY(g,y) ((int)(y / SCALEFACTOR_Y(g)))
/* (and float-returning versions) */
#define FUNSCALEX(g,x) ((x / SCALEFACTOR_X(g)))
#define FUNSCALEY(g,y) ((y / SCALEFACTOR_Y(g)))
#define LOWPASS(x) ((x>0) ? x : 0)
/* #define HIGHPASS(x,y) ((x>y) ? y : x) */ /* unused - == MIN */
/* maximal width of the string holding the cursor-coordinates for
the status line */
#define CURSOR_STR_LENGTH 256
/* maximal length of the format string for the cursor-coordinates */
#define CURSOR_FORMAT_LENGTH 32
typedef struct _IdleRenderStruct
{
int width;
int height;
int x;
int y;
int basex;
int basey;
guint idleid;
/*guint handlerid;*/
gboolean active;
GSList *update_areas; /* flushed update areas */
} IdleRenderStruct;
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 *qmaskoff, *qmaskon; /* widgets for qmask buttons */
GtkWidget *hrule, *vrule; /* widgets for rulers */
GtkWidget *origin; /* widgets for rulers */
GtkWidget *popup; /* widget for popup menu */
GtkWidget *statusarea; /* hbox holding the statusbar and stuff */
GtkWidget *statusbar; /* widget for statusbar */
GtkWidget *progressbar; /* widget for progressbar */
GtkWidget *cursor_label; /* widget for cursor position */
char cursor_format_str [CURSOR_FORMAT_LENGTH]; /* we need a variable format
* string because different
* units have different number
* of decimals */
GtkWidget *cancelbutton; /* widget for cancel button */
guint progressid; /* id of statusbar message for progress */
InfoDialog *window_info_dialog; /* dialog box for image information */
InfoDialog *window_nav_dialog; /* dialog box for image navigation */
GtkWidget *nav_popup; /* widget for the popup navigation window */
int color_type; /* is this an RGB or GRAY colormap */
GtkAdjustment *hsbdata; /* horizontal data information */
GtkAdjustment *vsbdata; /* vertical data information */
GimpImage *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 */
int dot_for_dot; /* is monitor resolution being ignored? */
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 */
int current_cursor; /* Currently installed cursor */
GdkCursorType override_cursor; /* Overriding cursor (ie. hourglass) */
short draw_cursor; /* should we draw software cursor ? */
short using_override_cursor; /* is the cursor overridden? (ie. hourglass)*/
int cursor_x; /* software cursor X value */
int cursor_y; /* software cursor Y value */
short proximity; /* is a device in proximity of gdisplay ? */
short have_cursor; /* is cursor currently drawn ? */
IdleRenderStruct idle_render; /* state of this gdisplay's render thread */
GList *cd_list; /* color display conversion stuff */
};
/* member function declarations */
GDisplay * gdisplay_new (GimpImage *, unsigned int);
void gdisplay_reconnect (GDisplay *, GimpImage *);
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_install_gimp_tool_cursor (GDisplay *, int);
void gdisplay_remove_tool_cursor (GDisplay *);
void gdisplay_install_override_cursor(GDisplay *, GdkCursorType);
void gdisplay_remove_override_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_flush_now (GDisplay *);
void gdisplays_finish_draw (void);
void gdisplay_draw_guides (GDisplay *);
void gdisplay_draw_guide (GDisplay *, Guide *, int);
Guide* gdisplay_find_guide (GDisplay *, int, int);
void gdisplay_snap_point (GDisplay *, double , double, double *, double *);
void gdisplay_snap_rectangle (GDisplay *, int, int, int, int, int *, int *);
void gdisplay_update_cursor (GDisplay *, int, int);
void gdisplay_set_dot_for_dot (GDisplay *, int);
void gdisplay_resize_cursor_label (GDisplay *);
GDisplay * gdisplays_check_valid (GDisplay *, GimpImage *);
/* function declarations */
GDisplay * gdisplay_active (void);
GDisplay * gdisplay_get_ID (int);
void gdisplay_update_title (GDisplay*);
void gdisplays_update_title (GimpImage*);
void gdisplays_resize_cursor_label (GimpImage*);
void gdisplays_update_area (GimpImage*, int, int, int, int);
void gdisplays_expose_guides (GimpImage*);
void gdisplays_expose_guide (GimpImage*, Guide *);
void gdisplays_update_full (GimpImage*);
void gdisplays_shrink_wrap (GimpImage*);
void gdisplays_expose_full (void);
void gdisplays_selection_visibility (GimpImage*, SelectionControl);
int gdisplays_dirty (void);
void gdisplays_delete (void);
void gdisplays_flush (void);
void gdisplays_flush_now (void);
void gdisplay_flush_displays_only (GDisplay *gdisp); /* no rerender! */
#endif /* __GDISPLAY_H__ */
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