mirror of https://github.com/GNOME/gimp.git
167 lines
7.0 KiB
C
167 lines
7.0 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __GIMP_DISPLAY_H__
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#define __GIMP_DISPLAY_H__
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#include "core/gimpobject.h"
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/* some useful macros */
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/* unpacking the user scale level (char) */
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#define SCALESRC(g) (g->scale & 0x00ff)
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#define SCALEDEST(g) (g->scale >> 8)
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/* finding the effective screen resolution (double) */
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#define SCREEN_XRES(g) (g->dot_for_dot ? \
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g->gimage->xresolution : gimprc.monitor_xres)
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#define SCREEN_YRES(g) (g->dot_for_dot ? \
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g->gimage->yresolution : gimprc.monitor_yres)
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/* calculate scale factors (double) */
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#define SCALEFACTOR_X(g) ((SCALEDEST(g) * SCREEN_XRES(g)) / \
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(SCALESRC(g) * g->gimage->xresolution))
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#define SCALEFACTOR_Y(g) ((SCALEDEST(g) * SCREEN_YRES(g)) / \
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(SCALESRC(g) * g->gimage->yresolution))
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/* scale values */
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#define SCALEX(g,x) ((gint) (x * SCALEFACTOR_X(g)))
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#define SCALEY(g,y) ((gint) (y * SCALEFACTOR_Y(g)))
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/* unscale values */
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#define UNSCALEX(g,x) ((gint) (x / SCALEFACTOR_X(g)))
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#define UNSCALEY(g,y) ((gint) (y / SCALEFACTOR_Y(g)))
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/* (and float-returning versions) */
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#define FUNSCALEX(g,x) (x / SCALEFACTOR_X(g))
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#define FUNSCALEY(g,y) (y / SCALEFACTOR_Y(g))
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typedef struct _IdleRenderStruct IdleRenderStruct;
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struct _IdleRenderStruct
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{
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gint width;
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gint height;
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gint x;
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gint y;
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gint basex;
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gint basey;
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guint idle_id;
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GSList *update_areas; /* flushed update areas */
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};
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extern GSList *display_list; /* EEK */
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#define GIMP_TYPE_DISPLAY (gimp_display_get_type ())
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#define GIMP_DISPLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_DISPLAY, GimpDisplay))
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#define GIMP_DISPLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GIMP_TYPE_DISPLAY, GimpDisplayClass))
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#define GIMP_IS_DISPLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_DISPLAY))
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#define GIMP_IS_DISPLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_DISPLAY))
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#define GIMP_DISPLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GIMP_TYPE_DISPLAY, GimpDisplayClass))
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typedef struct _GimpDisplayClass GimpDisplayClass;
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struct _GimpDisplay
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{
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GimpObject parent_instance;
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gint ID; /* unique identifier for this gdisplay */
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GimpImage *gimage; /* pointer to the associated gimage */
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gint instance; /* the instance # of this gdisplay as */
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/* taken from the gimage at creation */
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GtkWidget *shell; /* shell widget for this gdisplay */
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gint scale; /* scale factor from original raw image */
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gboolean dot_for_dot; /* is monitor resolution being ignored? */
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gboolean draw_guides; /* should the guides be drawn? */
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gboolean snap_to_guides; /* should the guides be snapped to? */
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GSList *update_areas; /* Update areas list */
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IdleRenderStruct idle_render; /* state of this gdisplay's render thread */
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};
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struct _GimpDisplayClass
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{
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GimpObjectClass parent_class;
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};
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GType gimp_display_get_type (void) G_GNUC_CONST;
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GimpDisplay * gimp_display_new (GimpImage *gimage,
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guint scale);
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void gimp_display_delete (GimpDisplay *gdisp);
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gint gimp_display_get_ID (GimpDisplay *gdisp);
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GimpDisplay * gimp_display_get_by_ID (Gimp *gimp,
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gint ID);
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void gimp_display_reconnect (GimpDisplay *gdisp,
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GimpImage *gimage);
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void gimp_display_add_update_area (GimpDisplay *gdisp,
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gint x,
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gint y,
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gint w,
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gint h);
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void gimp_display_flush (GimpDisplay *gdisp);
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void gimp_display_flush_now (GimpDisplay *gdisp);
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void gimp_display_finish_draw (GimpDisplay *gdisp);
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/* stuff that will go to GimpDisplayShell */
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void gdisplay_transform_coords (GimpDisplay *gdisp,
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gint x,
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gint y,
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gint *nx,
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gint *ny,
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gboolean use_offsets);
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void gdisplay_untransform_coords (GimpDisplay *gdisp,
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gint x,
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gint y,
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gint *nx,
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gint *ny,
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gboolean round,
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gboolean use_offsets);
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void gdisplay_transform_coords_f (GimpDisplay *gdisp,
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gdouble x,
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gdouble y,
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gdouble *nx,
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gdouble *ny,
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gboolean use_offsets);
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void gdisplay_untransform_coords_f (GimpDisplay *gdisp,
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gdouble x,
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gdouble y,
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gdouble *nx,
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gdouble *ny,
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gboolean use_offsets);
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#endif /* __GIMP_DISPLAY_H__ */
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