gtk/gdk/gdkpixmap.c
Alexander Larsson 992759f18e return solid masks for xpms that have no transparent color. This makes the
2001-02-23  Alexander Larsson  <alexl@redhat.com>

	* gdk/gdkpixmap.c (gdk_pixmap_colormap_new_from_pixbuf):
	return solid masks for xpms that have no transparent color.
	This makes the ..._create_from_xpm... API backwards
	compatible.
2001-02-23 13:35:16 +00:00

578 lines
17 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "gdkpixmap.h"
#include "gdkinternals.h"
#include "gdkpixbuf.h"
static GdkGC *gdk_pixmap_create_gc (GdkDrawable *drawable,
GdkGCValues *values,
GdkGCValuesMask mask);
static void gdk_pixmap_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height);
static void gdk_pixmap_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2);
static void gdk_pixmap_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints);
static void gdk_pixmap_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length);
static void gdk_pixmap_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length);
static void gdk_pixmap_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_pixmap_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_pixmap_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs);
static void gdk_pixmap_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints);
static void gdk_pixmap_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs);
static void gdk_pixmap_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height);
static void gdk_pixmap_real_get_size (GdkDrawable *drawable,
gint *width,
gint *height);
static GdkImage* gdk_pixmap_get_image (GdkDrawable *drawable,
gint x,
gint y,
gint width,
gint height);
static GdkVisual* gdk_pixmap_real_get_visual (GdkDrawable *drawable);
static gint gdk_pixmap_real_get_depth (GdkDrawable *drawable);
static void gdk_pixmap_real_set_colormap (GdkDrawable *drawable,
GdkColormap *cmap);
static GdkColormap* gdk_pixmap_real_get_colormap (GdkDrawable *drawable);
static void gdk_pixmap_init (GdkPixmapObject *pixmap);
static void gdk_pixmap_class_init (GdkPixmapObjectClass *klass);
static void gdk_pixmap_finalize (GObject *object);
static gpointer parent_class = NULL;
GType
gdk_pixmap_get_type (void)
{
static GType object_type = 0;
if (!object_type)
{
static const GTypeInfo object_info =
{
sizeof (GdkPixmapObjectClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gdk_pixmap_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GdkPixmapObject),
0, /* n_preallocs */
(GInstanceInitFunc) gdk_pixmap_init,
};
object_type = g_type_register_static (GDK_TYPE_DRAWABLE,
"GdkPixmap",
&object_info, 0);
}
return object_type;
}
static void
gdk_pixmap_init (GdkPixmapObject *pixmap)
{
/* 0-initialization is good for all other fields. */
pixmap->impl = g_object_new (_gdk_pixmap_impl_get_type (), NULL);
}
static void
gdk_pixmap_class_init (GdkPixmapObjectClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gdk_pixmap_finalize;
drawable_class->create_gc = gdk_pixmap_create_gc;
drawable_class->draw_rectangle = gdk_pixmap_draw_rectangle;
drawable_class->draw_arc = gdk_pixmap_draw_arc;
drawable_class->draw_polygon = gdk_pixmap_draw_polygon;
drawable_class->draw_text = gdk_pixmap_draw_text;
drawable_class->draw_text_wc = gdk_pixmap_draw_text_wc;
drawable_class->draw_drawable = gdk_pixmap_draw_drawable;
drawable_class->draw_points = gdk_pixmap_draw_points;
drawable_class->draw_segments = gdk_pixmap_draw_segments;
drawable_class->draw_lines = gdk_pixmap_draw_lines;
drawable_class->draw_glyphs = gdk_pixmap_draw_glyphs;
drawable_class->draw_image = gdk_pixmap_draw_image;
drawable_class->get_depth = gdk_pixmap_real_get_depth;
drawable_class->get_size = gdk_pixmap_real_get_size;
drawable_class->set_colormap = gdk_pixmap_real_set_colormap;
drawable_class->get_colormap = gdk_pixmap_real_get_colormap;
drawable_class->get_visual = gdk_pixmap_real_get_visual;
drawable_class->get_image = gdk_pixmap_get_image;
}
static void
gdk_pixmap_finalize (GObject *object)
{
GdkPixmapObject *obj = (GdkPixmapObject *) object;
g_object_unref (G_OBJECT (obj->impl));
obj->impl = NULL;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GdkGC *
gdk_pixmap_create_gc (GdkDrawable *drawable,
GdkGCValues *values,
GdkGCValuesMask mask)
{
return gdk_gc_new_with_values (((GdkPixmapObject *) drawable)->impl,
values, mask);
}
static void
gdk_pixmap_draw_rectangle (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_rectangle (private->impl, gc, filled,
x, y, width, height);
}
static void
gdk_pixmap_draw_arc (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
gint x,
gint y,
gint width,
gint height,
gint angle1,
gint angle2)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_arc (private->impl, gc, filled,
x, y,
width, height, angle1, angle2);
}
static void
gdk_pixmap_draw_polygon (GdkDrawable *drawable,
GdkGC *gc,
gint filled,
GdkPoint *points,
gint npoints)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_polygon (private->impl, gc, filled, points, npoints);
}
static void
gdk_pixmap_draw_text (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const gchar *text,
gint text_length)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_text (private->impl, font, gc,
x, y, text, text_length);
}
static void
gdk_pixmap_draw_text_wc (GdkDrawable *drawable,
GdkFont *font,
GdkGC *gc,
gint x,
gint y,
const GdkWChar *text,
gint text_length)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_text_wc (private->impl, font, gc,
x, y, text, text_length);
}
static void
gdk_pixmap_draw_drawable (GdkDrawable *drawable,
GdkGC *gc,
GdkPixmap *src,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_drawable (private->impl, gc, src, xsrc, ysrc,
xdest, ydest,
width, height);
}
static void
gdk_pixmap_draw_points (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_points (private->impl, gc, points, npoints);
}
static void
gdk_pixmap_draw_segments (GdkDrawable *drawable,
GdkGC *gc,
GdkSegment *segs,
gint nsegs)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_segments (private->impl, gc, segs, nsegs);
}
static void
gdk_pixmap_draw_lines (GdkDrawable *drawable,
GdkGC *gc,
GdkPoint *points,
gint npoints)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_lines (private->impl, gc, points, npoints);
}
static void
gdk_pixmap_draw_glyphs (GdkDrawable *drawable,
GdkGC *gc,
PangoFont *font,
gint x,
gint y,
PangoGlyphString *glyphs)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_glyphs (private->impl, gc, font, x, y, glyphs);
}
static void
gdk_pixmap_draw_image (GdkDrawable *drawable,
GdkGC *gc,
GdkImage *image,
gint xsrc,
gint ysrc,
gint xdest,
gint ydest,
gint width,
gint height)
{
GdkPixmapObject *private = (GdkPixmapObject *)drawable;
gdk_draw_image (private->impl, gc, image, xsrc, ysrc, xdest, ydest,
width, height);
}
static void
gdk_pixmap_real_get_size (GdkDrawable *drawable,
gint *width,
gint *height)
{
g_return_if_fail (GDK_IS_PIXMAP (drawable));
gdk_drawable_get_size (GDK_DRAWABLE (((GdkPixmapObject*)drawable)->impl),
width, height);
}
static GdkVisual*
gdk_pixmap_real_get_visual (GdkDrawable *drawable)
{
GdkColormap *colormap;
g_return_val_if_fail (GDK_IS_PIXMAP (drawable), NULL);
colormap = gdk_drawable_get_colormap (drawable);
return colormap ? gdk_colormap_get_visual (colormap) : NULL;
}
static gint
gdk_pixmap_real_get_depth (GdkDrawable *drawable)
{
gint depth;
g_return_val_if_fail (GDK_IS_PIXMAP (drawable), 0);
depth = GDK_PIXMAP_OBJECT (drawable)->depth;
return depth;
}
static void
gdk_pixmap_real_set_colormap (GdkDrawable *drawable,
GdkColormap *cmap)
{
g_return_if_fail (GDK_IS_PIXMAP (drawable));
gdk_drawable_set_colormap (((GdkPixmapObject*)drawable)->impl, cmap);
}
static GdkColormap*
gdk_pixmap_real_get_colormap (GdkDrawable *drawable)
{
g_return_val_if_fail (GDK_IS_PIXMAP (drawable), NULL);
return gdk_drawable_get_colormap (((GdkPixmapObject*)drawable)->impl);
}
static GdkImage*
gdk_pixmap_get_image (GdkDrawable *drawable,
gint x,
gint y,
gint width,
gint height)
{
g_return_val_if_fail (GDK_IS_PIXMAP (drawable), NULL);
return gdk_drawable_get_image (((GdkPixmapObject*)drawable)->impl,
x, y, width, height);
}
static GdkBitmap *
make_solid_mask (gint width, gint height)
{
GdkBitmap *bitmap;
GdkGC *gc;
GdkGCValues gc_values;
bitmap = gdk_pixmap_new (NULL, width, height, 1);
gc_values.foreground.pixel = 1;
gc = gdk_gc_new_with_values (bitmap, &gc_values, GDK_GC_FOREGROUND);
gdk_draw_rectangle (bitmap, gc, TRUE, 0, 0, width, height);
gdk_gc_unref (gc);
return bitmap;
}
#define PACKED_COLOR(c) ((((c)->red & 0xff) << 8) | ((c)->green & 0xff) | ((c)->blue >> 8))
static GdkPixmap *
gdk_pixmap_colormap_new_from_pixbuf (GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
GdkPixbuf *pixbuf)
{
GdkPixmap *pixmap;
GdkPixbuf *render_pixbuf;
GdkGC *tmp_gc;
pixmap = gdk_pixmap_new (NULL,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
gdk_colormap_get_visual (colormap)->depth);
gdk_drawable_set_colormap (pixmap, colormap);
if (transparent_color)
{
guint32 packed_color = PACKED_COLOR (transparent_color);
render_pixbuf = gdk_pixbuf_composite_color_simple (pixbuf,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GDK_INTERP_NEAREST,
255, 16, packed_color, packed_color);
}
else
render_pixbuf = pixbuf;
tmp_gc = gdk_gc_new (pixmap);
gdk_pixbuf_render_to_drawable (render_pixbuf, pixmap, tmp_gc, 0, 0, 0, 0,
gdk_pixbuf_get_width (render_pixbuf),
gdk_pixbuf_get_height (render_pixbuf),
GDK_RGB_DITHER_NORMAL, 0, 0);
gdk_gc_unref (tmp_gc);
if (render_pixbuf != pixbuf)
gdk_pixbuf_unref (render_pixbuf);
if (mask)
gdk_pixbuf_render_pixmap_and_mask (pixbuf, NULL, mask, 128);
if (mask && !*mask)
*mask = make_solid_mask (gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
return pixmap;
}
GdkPixmap*
gdk_pixmap_colormap_create_from_xpm (GdkWindow *window,
GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
const gchar *filename)
{
GdkPixbuf *pixbuf;
GdkPixmap *pixmap;
g_return_val_if_fail (window != NULL || colormap != NULL, NULL);
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
g_return_val_if_fail (colormap == NULL || GDK_IS_COLORMAP (colormap), NULL);
if (colormap == NULL)
colormap = gdk_drawable_get_colormap (window);
pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
if (!pixbuf)
return NULL;
pixmap = gdk_pixmap_colormap_new_from_pixbuf (colormap, mask, transparent_color, pixbuf);
gdk_pixbuf_unref (pixbuf);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_xpm (GdkWindow *window,
GdkBitmap **mask,
GdkColor *transparent_color,
const gchar *filename)
{
return gdk_pixmap_colormap_create_from_xpm (window, NULL, mask,
transparent_color, filename);
}
GdkPixmap*
gdk_pixmap_colormap_create_from_xpm_d (GdkWindow *window,
GdkColormap *colormap,
GdkBitmap **mask,
GdkColor *transparent_color,
gchar **data)
{
GdkPixbuf *pixbuf;
GdkPixmap *pixmap;
g_return_val_if_fail (window != NULL || colormap != NULL, NULL);
g_return_val_if_fail (window == NULL || GDK_IS_WINDOW (window), NULL);
g_return_val_if_fail (colormap == NULL || GDK_IS_COLORMAP (colormap), NULL);
if (colormap == NULL)
colormap = gdk_drawable_get_colormap (window);
pixbuf = gdk_pixbuf_new_from_xpm_data ((const char **)data);
if (!pixbuf)
return NULL;
pixmap = gdk_pixmap_colormap_new_from_pixbuf (colormap, mask, transparent_color, pixbuf);
gdk_pixbuf_unref (pixbuf);
return pixmap;
}
GdkPixmap*
gdk_pixmap_create_from_xpm_d (GdkWindow *window,
GdkBitmap **mask,
GdkColor *transparent_color,
gchar **data)
{
return gdk_pixmap_colormap_create_from_xpm_d (window, NULL, mask,
transparent_color, data);
}