dwindows: gtk/dw.c comparison

comparison gtk/dw.c @ 1245:3a2ffe3a7eae

Implemented dw_pixmap_stretch_bitblt() on GTK3... GTK2 support for printing contexts is there but not tested. GTK2 pixmap/drawable support to come if possible.

author	bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date	Wed, 19 Oct 2011 09:40:23 +0000
parents	3bc6244279c0
children	c228c90f95cb

comparison

equal deleted inserted replaced

-:db26b9622769
+:3a2ffe3a7eae
 DW_MUTEX_UNLOCK;
 }
 #if GTK_CHECK_VERSION(2,10,0)
 /* Cairo version of dw_pixmap_bitblt() from GTK3, use if either pixmap is a cairo surface */
-void _cairo_pixmap_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc)
+void _cairo_pixmap_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc, int srcwidth, int srcheight)
 {
 int _locked_by_me = FALSE;
 cairo_t *cr = NULL;
+int retval = DW_ERROR_GENERAL;
 if((!dest && (!destp || !destp->image)) || (!src && (!srcp || (!srcp->image && !srcp->pixmap))))
-return;
+return retval;
 DW_MUTEX_LOCK;
 if(dest)
 {
 GdkWindow *window = gtk_widget_get_window(dest);
 /* Safety check for non-existant windows */
 if(!window || !GDK_IS_WINDOW(window))
 {
 DW_MUTEX_UNLOCK;
-return;
+return retval;
 }
 cr = gdk_cairo_create(window);
 }
 else if(destp && destp->image)
 cr = cairo_create(destp->image);
 if(cr)
 {
+double xscale = 1, yscale = 1;
+if(srcwidth != -1 && srcheight != -1)
+{
+xscale = (double)width / (double)srcwidth;
+yscale = (double)height / (double)srcheight;
+cairo_scale(cr, xscale, yscale);
+}
 #if GTK_CHECK_VERSION(2,24,0)
 if(src)
 gdk_cairo_set_source_window (cr, gtk_widget_get_window(src), xdest -xsrc, ydest - ysrc);
 else
 #endif
 if(srcp && srcp->image)
-cairo_set_source_surface (cr, srcp->image, xdest - xsrc, ydest - ysrc);
+cairo_set_source_surface (cr, srcp->image, (xdest - xsrc) / xscale, (ydest - ysrc) / yscale);
 else if(srcp && srcp->pixmap && !srcp->bitmap)
-gdk_cairo_set_source_pixmap (cr, srcp->pixmap, xdest - xsrc, ydest - ysrc);
+gdk_cairo_set_source_pixmap (cr, srcp->pixmap, (xdest - xsrc) / xscale, (ydest - ysrc) / yscale);
 else if(srcp && srcp->pixmap && srcp->bitmap)
 {
 cairo_pattern_t *mask_pattern;
 /* hack to get the mask pattern */
-gdk_cairo_set_source_pixmap(cr, srcp->bitmap, xdest, ydest);
+gdk_cairo_set_source_pixmap(cr, srcp->bitmap, xdest / xscale, ydest / yscale);
 mask_pattern = cairo_get_source(cr);
 cairo_pattern_reference(mask_pattern);
-gdk_cairo_set_source_pixmap(cr, srcp->pixmap, xdest - xsrc, ydest - ysrc);
+gdk_cairo_set_source_pixmap(cr, srcp->pixmap, (xdest - xsrc) / xscale, (ydest - ysrc) / yscale);
-cairo_rectangle(cr, xdest, ydest, width, height);
+cairo_rectangle(cr, xdest / xscale, ydest / yscale, width, height);
 cairo_clip(cr);
 cairo_mask(cr, mask_pattern);
 cairo_destroy(cr);
 DW_MUTEX_UNLOCK;
-return;
+return DW_ERROR_NONE;
 }
-cairo_rectangle(cr, xdest, ydest, width, height);
+cairo_rectangle(cr, xdest / xscale, ydest / yscale, width, height);
 cairo_fill(cr);
 cairo_destroy(cr);
-}
+retval = DW_ERROR_NONE;
-DW_MUTEX_UNLOCK;
+}
+DW_MUTEX_UNLOCK;
+return retval;
 }
 #endif
 /*
 * Copies from one item to another.
 *       src: Source window handle.
 *       srcp: Source pixmap. (choose only one).
 *       xsrc: X coordinate of source.
 *       ysrc: Y coordinate of source.
 */
-void dw_pixmap_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc)
+void API dw_pixmap_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc)
+{
+dw_pixmap_stretch_bitblt(dest, destp, xdest, ydest, width, height, src, srcp, xsrc, ysrc, -1, -1);
+}
+/*
+* Copies from one surface to another allowing for stretching.
+* Parameters:
+*       dest: Destination window handle.
+*       destp: Destination pixmap. (choose only one).
+*       xdest: X coordinate of destination.
+*       ydest: Y coordinate of destination.
+*       width: Width of the target area.
+*       height: Height of the target area.
+*       src: Source window handle.
+*       srcp: Source pixmap. (choose only one).
+*       xsrc: X coordinate of source.
+*       ysrc: Y coordinate of source.
+*       srcwidth: Width of area to copy.
+*       srcheight: Height of area to copy.
+* Returns:
+*       DW_ERROR_NONE on success and DW_ERROR_GENERAL on failure.
+*/
+int API dw_pixmap_stretch_bitblt(HWND dest, HPIXMAP destp, int xdest, int ydest, int width, int height, HWND src, HPIXMAP srcp, int xsrc, int ysrc, int srcwidth, int srcheight)
 {
 /* Ok, these #ifdefs are going to get a bit confusing because
 * when using gdk-pixbuf, pixmaps are really pixbufs, so we
 * have to use the pixbuf functions on them, and thus convoluting
 * the code here a bit. -Brian
 */
 int _locked_by_me = FALSE;
 GdkGC *gc = NULL;
+int retval = DW_ERROR_GENERAL;
 #if GTK_CHECK_VERSION(2,10,0)
 if((destp && destp->image) || (srcp && srcp->image))
-{
+return _cairo_pixmap_bitblt(dest, destp, xdest, ydest, width, height, src, srcp, xsrc, ysrc, srcwidth, srcheight);
-_cairo_pixmap_bitblt(dest, destp, xdest, ydest, width, height, src, srcp, xsrc, ysrc);
-return;
-}
 #endif
 if((!dest && (!destp || !destp->pixmap)) || (!src && (!srcp || !srcp->pixmap)))
-return;
+return retval;
 DW_MUTEX_LOCK;
 if(dest)
 gc = _set_colors(dest->window);
 else if(src)
 {
 gdk_gc_set_clip_mask( gc, NULL );
 gdk_gc_set_clip_origin( gc, 0, 0 );
 }
 gdk_gc_unref( gc );
-}
+retval = DW_ERROR_NONE;
-DW_MUTEX_UNLOCK;
+}
+DW_MUTEX_UNLOCK;
+return retval;
 }
 /*
 * Emits a beep.
 * Parameters:

Mercurial > dwindows

comparison gtk/dw.c @ 1245:3a2ffe3a7eae