/* 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 "gdkx.h" #include "gdkregion-generic.h" #include #include #include #include /* for memcpy() */ #if defined (HAVE_IPC_H) && defined (HAVE_SHM_H) && defined (HAVE_XSHM_H) #define USE_SHM #endif #ifdef USE_SHM #include #endif /* USE_SHM */ #include "gdkprivate-x11.h" #include "gdkdrawable-x11.h" #include "gdkpixmap-x11.h" #include "gdkscreen-x11.h" #include "gdkdisplay-x11.h" static void gdk_x11_draw_rectangle (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height); static void gdk_x11_draw_arc (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height, gint angle1, gint angle2); static void gdk_x11_draw_polygon (GdkDrawable *drawable, GdkGC *gc, gboolean filled, GdkPoint *points, gint npoints); static void gdk_x11_draw_text (GdkDrawable *drawable, GdkFont *font, GdkGC *gc, gint x, gint y, const gchar *text, gint text_length); static void gdk_x11_draw_text_wc (GdkDrawable *drawable, GdkFont *font, GdkGC *gc, gint x, gint y, const GdkWChar *text, gint text_length); static void gdk_x11_draw_drawable (GdkDrawable *drawable, GdkGC *gc, GdkPixmap *src, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height); static void gdk_x11_draw_points (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints); static void gdk_x11_draw_segments (GdkDrawable *drawable, GdkGC *gc, GdkSegment *segs, gint nsegs); static void gdk_x11_draw_lines (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints); static void gdk_x11_draw_glyphs (GdkDrawable *drawable, GdkGC *gc, PangoFont *font, gint x, gint y, PangoGlyphString *glyphs); static void gdk_x11_draw_image (GdkDrawable *drawable, GdkGC *gc, GdkImage *image, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height); static void gdk_x11_draw_pixbuf (GdkDrawable *drawable, GdkGC *gc, GdkPixbuf *pixbuf, gint src_x, gint src_y, gint dest_x, gint dest_y, gint width, gint height, GdkRgbDither dither, gint x_dither, gint y_dither); static void gdk_x11_set_colormap (GdkDrawable *drawable, GdkColormap *colormap); static GdkColormap* gdk_x11_get_colormap (GdkDrawable *drawable); static gint gdk_x11_get_depth (GdkDrawable *drawable); static GdkScreen * gdk_x11_get_screen (GdkDrawable *drawable); static GdkVisual* gdk_x11_get_visual (GdkDrawable *drawable); static void gdk_drawable_impl_x11_class_init (GdkDrawableImplX11Class *klass); static void gdk_drawable_impl_x11_finalize (GObject *object); static gpointer parent_class = NULL; GType _gdk_drawable_impl_x11_get_type (void) { static GType object_type = 0; if (!object_type) { static const GTypeInfo object_info = { sizeof (GdkDrawableImplX11Class), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) gdk_drawable_impl_x11_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GdkDrawableImplX11), 0, /* n_preallocs */ (GInstanceInitFunc) NULL, }; object_type = g_type_register_static (GDK_TYPE_DRAWABLE, "GdkDrawableImplX11", &object_info, 0); } return object_type; } static void gdk_drawable_impl_x11_class_init (GdkDrawableImplX11Class *klass) { GdkDrawableClass *drawable_class = GDK_DRAWABLE_CLASS (klass); GObjectClass *object_class = G_OBJECT_CLASS (klass); parent_class = g_type_class_peek_parent (klass); object_class->finalize = gdk_drawable_impl_x11_finalize; drawable_class->create_gc = _gdk_x11_gc_new; drawable_class->draw_rectangle = gdk_x11_draw_rectangle; drawable_class->draw_arc = gdk_x11_draw_arc; drawable_class->draw_polygon = gdk_x11_draw_polygon; drawable_class->draw_text = gdk_x11_draw_text; drawable_class->draw_text_wc = gdk_x11_draw_text_wc; drawable_class->draw_drawable = gdk_x11_draw_drawable; drawable_class->draw_points = gdk_x11_draw_points; drawable_class->draw_segments = gdk_x11_draw_segments; drawable_class->draw_lines = gdk_x11_draw_lines; drawable_class->draw_glyphs = gdk_x11_draw_glyphs; drawable_class->draw_image = gdk_x11_draw_image; drawable_class->draw_pixbuf = gdk_x11_draw_pixbuf; drawable_class->set_colormap = gdk_x11_set_colormap; drawable_class->get_colormap = gdk_x11_get_colormap; drawable_class->get_depth = gdk_x11_get_depth; drawable_class->get_screen = gdk_x11_get_screen; drawable_class->get_visual = gdk_x11_get_visual; drawable_class->_copy_to_image = _gdk_x11_copy_to_image; } static void gdk_drawable_impl_x11_finalize (GObject *object) { gdk_drawable_set_colormap (GDK_DRAWABLE (object), NULL); G_OBJECT_CLASS (parent_class)->finalize (object); } static void try_pixmap (Display *xdisplay, int screen, int depth) { Pixmap pixmap = XCreatePixmap (xdisplay, RootWindow (xdisplay, screen), 1, 1, depth); XFreePixmap (xdisplay, pixmap); } gboolean _gdk_x11_have_render (GdkDisplay *display) { Display *xdisplay = GDK_DISPLAY_XDISPLAY (display); GdkDisplayX11 *x11display = GDK_DISPLAY_X11 (display); if (x11display->have_render == GDK_UNKNOWN) { int event_base, error_base; x11display->have_render = XRenderQueryExtension (xdisplay, &event_base, &error_base) ? GDK_YES : GDK_NO; if (x11display->have_render == GDK_YES) { /* * Sun advertises RENDER, but fails to support 32-bit pixmaps. * That is just no good. Therefore, we check all screens * for proper support. */ int screen; for (screen = 0; screen < ScreenCount (xdisplay); screen++) { int count; int *depths = XListDepths (xdisplay, screen, &count); gboolean has_8 = FALSE, has_32 = FALSE; if (depths) { int i; for (i = 0; i < count; i++) { if (depths[i] == 8) has_8 = TRUE; else if (depths[i] == 32) has_32 = TRUE; } XFree (depths); } /* At this point, we might have a false positive; * buggy versions of Xinerama only report depths for * which there is an associated visual; so we actually * go ahead and try create pixmaps. */ if (!(has_8 && has_32)) { gdk_error_trap_push (); if (!has_8) try_pixmap (xdisplay, screen, 8); if (!has_32) try_pixmap (xdisplay, screen, 32); XSync (xdisplay, False); if (gdk_error_trap_pop () == 0) { has_8 = TRUE; has_32 = TRUE; } } if (!(has_8 && has_32)) { g_warning ("The X server advertises that RENDER support is present,\n" "but fails to supply the necessary pixmap support. In\n" "other words, it is buggy."); x11display->have_render = GDK_NO; break; } } } } return x11display->have_render == GDK_YES; } static XftDraw * gdk_x11_drawable_get_xft_draw (GdkDrawable *drawable) { GdkDrawableImplX11 *impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (impl->xft_draw == NULL) { GdkColormap *colormap = gdk_drawable_get_colormap (drawable); GdkVisual *visual; if (!colormap) { g_warning ("Using Xft rendering requires the drawable argument to\n" "have a specified colormap. All windows have a colormap,\n" "however, pixmaps only have colormap by default if they\n" "were created with a non-NULL window argument. Otherwise\n" "a colormap must be set on them with gdk_drawable_set_colormap"); return NULL; } visual = gdk_colormap_get_visual (colormap); impl->xft_draw = XftDrawCreate (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_VISUAL_XVISUAL (visual), GDK_COLORMAP_XCOLORMAP (colormap)); } return impl->xft_draw; } static Picture gdk_x11_drawable_get_picture (GdkDrawable *drawable) { XftDraw *draw = gdk_x11_drawable_get_xft_draw (drawable); return draw ? XftDrawPicture (draw) : None; } static void gdk_x11_drawable_update_xft_clip (GdkDrawable *drawable, GdkGC *gc) { GdkGCX11 *gc_private = gc ? GDK_GC_X11 (gc) : NULL; XftDraw *xft_draw = gdk_x11_drawable_get_xft_draw (drawable); if (gc && gc_private->clip_region) { GdkRegionBox *boxes = gc_private->clip_region->rects; gint n_boxes = gc_private->clip_region->numRects; XRectangle *rects = g_new (XRectangle, n_boxes); int i; for (i=0; i < n_boxes; i++) { rects[i].x = CLAMP (boxes[i].x1 + gc->clip_x_origin, G_MINSHORT, G_MAXSHORT); rects[i].y = CLAMP (boxes[i].y1 + gc->clip_y_origin, G_MINSHORT, G_MAXSHORT); rects[i].width = CLAMP (boxes[i].x2 + gc->clip_x_origin, G_MINSHORT, G_MAXSHORT) - rects[i].x; rects[i].height = CLAMP (boxes[i].y2 + gc->clip_y_origin, G_MINSHORT, G_MAXSHORT) - rects[i].y; } XftDrawSetClipRectangles (xft_draw, 0, 0, rects, n_boxes); g_free (rects); } else { XftDrawSetClip (xft_draw, NULL); } } /***************************************************** * X11 specific implementations of generic functions * *****************************************************/ static GdkColormap* gdk_x11_get_colormap (GdkDrawable *drawable) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); return impl->colormap; } static void gdk_x11_set_colormap (GdkDrawable *drawable, GdkColormap *colormap) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (impl->colormap == colormap) return; if (impl->colormap) g_object_unref (impl->colormap); impl->colormap = colormap; if (impl->colormap) g_object_ref (impl->colormap); } /* Drawing */ static void gdk_x11_draw_rectangle (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (filled) XFillRectangle (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), x, y, width, height); else XDrawRectangle (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), x, y, width, height); } static void gdk_x11_draw_arc (GdkDrawable *drawable, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height, gint angle1, gint angle2) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (filled) XFillArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2); else XDrawArc (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), x, y, width, height, angle1, angle2); } static void gdk_x11_draw_polygon (GdkDrawable *drawable, GdkGC *gc, gboolean filled, GdkPoint *points, gint npoints) { XPoint *tmp_points; gint tmp_npoints, i; GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (!filled && (points[0].x != points[npoints-1].x || points[0].y != points[npoints-1].y)) { tmp_npoints = npoints + 1; tmp_points = g_new (XPoint, tmp_npoints); tmp_points[npoints].x = points[0].x; tmp_points[npoints].y = points[0].y; } else { tmp_npoints = npoints; tmp_points = g_new (XPoint, tmp_npoints); } for (i=0; iscreen), impl->xid, GDK_GC_GET_XGC (gc), tmp_points, tmp_npoints, Complex, CoordModeOrigin); else XDrawLines (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), tmp_points, tmp_npoints, CoordModeOrigin); g_free (tmp_points); } /* gdk_x11_draw_text * * Modified by Li-Da Lho to draw 16 bits and Multibyte strings * * Interface changed: add "GdkFont *font" to specify font or fontset explicitely */ static void gdk_x11_draw_text (GdkDrawable *drawable, GdkFont *font, GdkGC *gc, gint x, gint y, const gchar *text, gint text_length) { GdkDrawableImplX11 *impl; Display *xdisplay; impl = GDK_DRAWABLE_IMPL_X11 (drawable); xdisplay = GDK_SCREEN_XDISPLAY (impl->screen); if (font->type == GDK_FONT_FONT) { XFontStruct *xfont = (XFontStruct *) GDK_FONT_XFONT (font); XSetFont(xdisplay, GDK_GC_GET_XGC (gc), xfont->fid); if ((xfont->min_byte1 == 0) && (xfont->max_byte1 == 0)) { XDrawString (xdisplay, impl->xid, GDK_GC_GET_XGC (gc), x, y, text, text_length); } else { XDrawString16 (xdisplay, impl->xid, GDK_GC_GET_XGC (gc), x, y, (XChar2b *) text, text_length / 2); } } else if (font->type == GDK_FONT_FONTSET) { XFontSet fontset = (XFontSet) GDK_FONT_XFONT (font); XmbDrawString (xdisplay, impl->xid, fontset, GDK_GC_GET_XGC (gc), x, y, text, text_length); } else g_error("undefined font type\n"); } static void gdk_x11_draw_text_wc (GdkDrawable *drawable, GdkFont *font, GdkGC *gc, gint x, gint y, const GdkWChar *text, gint text_length) { GdkDrawableImplX11 *impl; Display *xdisplay; impl = GDK_DRAWABLE_IMPL_X11 (drawable); xdisplay = GDK_SCREEN_XDISPLAY (impl->screen); if (font->type == GDK_FONT_FONT) { XFontStruct *xfont = (XFontStruct *) GDK_FONT_XFONT (font); gchar *text_8bit; gint i; XSetFont(xdisplay, GDK_GC_GET_XGC (gc), xfont->fid); text_8bit = g_new (gchar, text_length); for (i=0; ixid, GDK_GC_GET_XGC (gc), x, y, text_8bit, text_length); g_free (text_8bit); } else if (font->type == GDK_FONT_FONTSET) { if (sizeof(GdkWChar) == sizeof(wchar_t)) { XwcDrawString (xdisplay, impl->xid, (XFontSet) GDK_FONT_XFONT (font), GDK_GC_GET_XGC (gc), x, y, (wchar_t *)text, text_length); } else { wchar_t *text_wchar; gint i; text_wchar = g_new (wchar_t, text_length); for (i=0; ixid, (XFontSet) GDK_FONT_XFONT (font), GDK_GC_GET_XGC (gc), x, y, text_wchar, text_length); g_free (text_wchar); } } else g_error("undefined font type\n"); } static void gdk_x11_draw_drawable (GdkDrawable *drawable, GdkGC *gc, GdkPixmap *src, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height) { int src_depth = gdk_drawable_get_depth (src); int dest_depth = gdk_drawable_get_depth (drawable); GdkDrawableImplX11 *impl; GdkDrawableImplX11 *src_impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); if (GDK_IS_DRAWABLE_IMPL_X11 (src)) src_impl = GDK_DRAWABLE_IMPL_X11 (src); else src_impl = NULL; if (src_depth == 1) { XCopyArea (GDK_SCREEN_XDISPLAY (impl->screen), src_impl ? src_impl->xid : GDK_DRAWABLE_XID (src), impl->xid, GDK_GC_GET_XGC (gc), xsrc, ysrc, width, height, xdest, ydest); } else if (dest_depth != 0 && src_depth == dest_depth) { XCopyArea (GDK_SCREEN_XDISPLAY (impl->screen), src_impl ? src_impl->xid : GDK_DRAWABLE_XID (src), impl->xid, GDK_GC_GET_XGC (gc), xsrc, ysrc, width, height, xdest, ydest); } else g_warning ("Attempt to draw a drawable with depth %d to a drawable with depth %d", src_depth, dest_depth); } static void gdk_x11_draw_points (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); /* We special-case npoints == 1, because X will merge multiple * consecutive XDrawPoint requests into a PolyPoint request */ if (npoints == 1) { XDrawPoint (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), points[0].x, points[0].y); } else { gint i; XPoint *tmp_points = g_new (XPoint, npoints); for (i=0; iscreen), impl->xid, GDK_GC_GET_XGC (gc), tmp_points, npoints, CoordModeOrigin); g_free (tmp_points); } } static void gdk_x11_draw_segments (GdkDrawable *drawable, GdkGC *gc, GdkSegment *segs, gint nsegs) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); /* We special-case nsegs == 1, because X will merge multiple * consecutive XDrawLine requests into a PolySegment request */ if (nsegs == 1) { XDrawLine (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), segs[0].x1, segs[0].y1, segs[0].x2, segs[0].y2); } else { gint i; XSegment *tmp_segs = g_new (XSegment, nsegs); for (i=0; iscreen), impl->xid, GDK_GC_GET_XGC (gc), tmp_segs, nsegs); g_free (tmp_segs); } } static void gdk_x11_draw_lines (GdkDrawable *drawable, GdkGC *gc, GdkPoint *points, gint npoints) { gint i; XPoint *tmp_points = g_new (XPoint, npoints); GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); for (i=0; iscreen), impl->xid, GDK_GC_GET_XGC (gc), tmp_points, npoints, CoordModeOrigin); g_free (tmp_points); } static void gdk_x11_draw_glyphs (GdkDrawable *drawable, GdkGC *gc, PangoFont *font, gint x, gint y, PangoGlyphString *glyphs) { GdkDrawableImplX11 *impl; XftColor color; XftDraw *draw; impl = GDK_DRAWABLE_IMPL_X11 (drawable); g_return_if_fail (PANGO_XFT_IS_FONT (font)); _gdk_gc_x11_get_fg_xft_color (gc, &color); gdk_x11_drawable_update_xft_clip (drawable, gc); draw = gdk_x11_drawable_get_xft_draw (drawable); pango_xft_render (draw, &color, font, glyphs, x, y); } static void gdk_x11_draw_image (GdkDrawable *drawable, GdkGC *gc, GdkImage *image, gint xsrc, gint ysrc, gint xdest, gint ydest, gint width, gint height) { GdkDrawableImplX11 *impl; impl = GDK_DRAWABLE_IMPL_X11 (drawable); #ifdef USE_SHM if (image->type == GDK_IMAGE_SHARED) XShmPutImage (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), GDK_IMAGE_XIMAGE (image), xsrc, ysrc, xdest, ydest, width, height, False); else #endif XPutImage (GDK_SCREEN_XDISPLAY (impl->screen), impl->xid, GDK_GC_GET_XGC (gc), GDK_IMAGE_XIMAGE (image), xsrc, ysrc, xdest, ydest, width, height); } static gint gdk_x11_get_depth (GdkDrawable *drawable) { /* This is a bit bogus but I'm not sure the other way is better */ return gdk_drawable_get_depth (GDK_DRAWABLE_IMPL_X11 (drawable)->wrapper); } static GdkDrawable * get_impl_drawable (GdkDrawable *drawable) { GdkDrawable *impl; if (GDK_IS_WINDOW (drawable)) impl = ((GdkPixmapObject *)drawable)->impl; else if (GDK_IS_PIXMAP (drawable)) impl = ((GdkPixmapObject *)drawable)->impl; else { g_warning (G_STRLOC " drawable is not a pixmap or window"); return None; } return impl; } static GdkScreen* gdk_x11_get_screen (GdkDrawable *drawable) { if (GDK_IS_DRAWABLE_IMPL_X11 (drawable)) return GDK_DRAWABLE_IMPL_X11 (drawable)->screen; else return GDK_DRAWABLE_IMPL_X11 (get_impl_drawable (drawable))->screen; } static GdkVisual* gdk_x11_get_visual (GdkDrawable *drawable) { return gdk_drawable_get_visual (GDK_DRAWABLE_IMPL_X11 (drawable)->wrapper); } /** * gdk_x11_drawable_get_xdisplay: * @drawable: a #GdkDrawable. * * Returns the display of a #GdkDrawable. * * Return value: an Xlib Display*. **/ Display * gdk_x11_drawable_get_xdisplay (GdkDrawable *drawable) { if (GDK_IS_DRAWABLE_IMPL_X11 (drawable)) return GDK_SCREEN_XDISPLAY (GDK_DRAWABLE_IMPL_X11 (drawable)->screen); else return GDK_SCREEN_XDISPLAY (GDK_DRAWABLE_IMPL_X11 (get_impl_drawable (drawable))->screen); } /** * gdk_x11_drawable_get_xid: * @drawable: a #GdkDrawable. * * Returns the X resource (window or pixmap) belonging to a #GdkDrawable. * * Return value: the ID of @drawable's X resource. **/ XID gdk_x11_drawable_get_xid (GdkDrawable *drawable) { GdkDrawable *impl; if (GDK_IS_WINDOW (drawable)) impl = ((GdkPixmapObject *)drawable)->impl; else if (GDK_IS_PIXMAP (drawable)) impl = ((GdkPixmapObject *)drawable)->impl; else { g_warning (G_STRLOC " drawable is not a pixmap or window"); return None; } return ((GdkDrawableImplX11 *)impl)->xid; } /* Code for accelerated alpha compositing using the RENDER extension. * It's a bit long because there are lots of possibilities for * what's the fastest depending on the available picture formats, * whether we can used shared pixmaps, etc. */ typedef enum { FORMAT_NONE, FORMAT_EXACT_MASK, FORMAT_ARGB_MASK, FORMAT_ARGB } FormatType; static FormatType select_format (GdkDisplay *display, XRenderPictFormat **format, XRenderPictFormat **mask) { Display *xdisplay = GDK_DISPLAY_XDISPLAY (display); XRenderPictFormat pf; if (!_gdk_x11_have_render (display)) return FORMAT_NONE; /* Look for a 32-bit xRGB and Axxx formats that exactly match the * in memory data format. We can use them as pixmap and mask * to deal with non-premultiplied data. */ pf.type = PictTypeDirect; pf.depth = 32; pf.direct.redMask = 0xff; pf.direct.greenMask = 0xff; pf.direct.blueMask = 0xff; pf.direct.alphaMask = 0; if (ImageByteOrder (xdisplay) == LSBFirst) { /* ABGR */ pf.direct.red = 0; pf.direct.green = 8; pf.direct.blue = 16; } else { /* RGBA */ pf.direct.red = 24; pf.direct.green = 16; pf.direct.blue = 8; } *format = XRenderFindFormat (xdisplay, (PictFormatType | PictFormatDepth | PictFormatRedMask | PictFormatRed | PictFormatGreenMask | PictFormatGreen | PictFormatBlueMask | PictFormatBlue | PictFormatAlphaMask), &pf, 0); pf.direct.alphaMask = 0xff; if (ImageByteOrder (xdisplay) == LSBFirst) { /* ABGR */ pf.direct.alpha = 24; } else { pf.direct.alpha = 0; } *mask = XRenderFindFormat (xdisplay, (PictFormatType | PictFormatDepth | PictFormatAlphaMask | PictFormatAlpha), &pf, 0); if (*format && *mask) return FORMAT_EXACT_MASK; /* OK, that failed, now look for xRGB and Axxx formats in * RENDER's preferred order */ pf.direct.alphaMask = 0; /* ARGB */ pf.direct.red = 16; pf.direct.green = 8; pf.direct.blue = 0; *format = XRenderFindFormat (xdisplay, (PictFormatType | PictFormatDepth | PictFormatRedMask | PictFormatRed | PictFormatGreenMask | PictFormatGreen | PictFormatBlueMask | PictFormatBlue | PictFormatAlphaMask), &pf, 0); pf.direct.alphaMask = 0xff; pf.direct.alpha = 24; *mask = XRenderFindFormat (xdisplay, (PictFormatType | PictFormatDepth | PictFormatAlphaMask | PictFormatAlpha), &pf, 0); if (*format && *mask) return FORMAT_ARGB_MASK; /* Finally, if neither of the above worked, fall back to * looking for combined ARGB -- we'll premultiply ourselves. */ pf.type = PictTypeDirect; pf.depth = 32; pf.direct.red = 16; pf.direct.green = 8; pf.direct.blue = 0; pf.direct.alphaMask = 0xff; pf.direct.alpha = 24; *format = XRenderFindFormat (xdisplay, (PictFormatType | PictFormatDepth | PictFormatRedMask | PictFormatRed | PictFormatGreenMask | PictFormatGreen | PictFormatBlueMask | PictFormatBlue | PictFormatAlphaMask | PictFormatAlpha), &pf, 0); *mask = NULL; if (*format) return FORMAT_ARGB; return FORMAT_NONE; } #if 0 static void list_formats (XRenderPictFormat *pf) { gint i; for (i=0 ;; i++) { XRenderPictFormat *pf = XRenderFindFormat (impl->xdisplay, 0, NULL, i); if (pf) { g_print ("%2d R-%#06x/%#06x G-%#06x/%#06x B-%#06x/%#06x A-%#06x/%#06x\n", pf->depth, pf->direct.red, pf->direct.redMask, pf->direct.green, pf->direct.greenMask, pf->direct.blue, pf->direct.blueMask, pf->direct.alpha, pf->direct.alphaMask); } else break; } } #endif static void convert_to_format (guchar *src_buf, gint src_rowstride, guchar *dest_buf, gint dest_rowstride, FormatType dest_format, GdkByteOrder dest_byteorder, gint width, gint height) { gint i; for (i=0; i < height; i++) { switch (dest_format) { case FORMAT_EXACT_MASK: { memcpy (dest_buf + i * dest_rowstride, src_buf + i * src_rowstride, width * 4); break; } case FORMAT_ARGB_MASK: { guchar *row = src_buf + i * src_rowstride; if (((gsize)row & 3) != 0) { guchar *p = row; guint32 *q = (guint32 *)(dest_buf + i * dest_rowstride); guchar *end = p + 4 * width; while (p < end) { *q = (p[3] << 24) | (p[0] << 16) | (p[1] << 8) | p[2]; p += 4; q++; } } else { guint32 *p = (guint32 *)row; guint32 *q = (guint32 *)(dest_buf + i * dest_rowstride); guint32 *end = p + width; #if G_BYTE_ORDER == G_LITTLE_ENDIAN if (dest_byteorder == GDK_LSB_FIRST) { /* ABGR => ARGB */ while (p < end) { *q = ( (*p & 0xff00ff00) | ((*p & 0x000000ff) << 16) | ((*p & 0x00ff0000) >> 16)); q++; p++; } } else { /* ABGR => BGRA */ while (p < end) { *q = (((*p & 0xff000000) >> 24) | ((*p & 0x00ffffff) << 8)); q++; p++; } } #else /* G_BYTE_ORDER == G_BIG_ENDIAN */ if (dest_byteorder == GDK_LSB_FIRST) { /* RGBA => BGRA */ while (p < end) { *q = ( (*p & 0x00ff00ff) | ((*p & 0x0000ff00) << 16) | ((*p & 0xff000000) >> 16)); q++; p++; } } else { /* RGBA => ARGB */ while (p < end) { *q = (((*p & 0xffffff00) >> 8) | ((*p & 0x000000ff) << 24)); q++; p++; } } #endif /* G_BYTE_ORDER*/ } break; } case FORMAT_ARGB: { guchar *p = (src_buf + i * src_rowstride); guchar *q = (dest_buf + i * dest_rowstride); guchar *end = p + 4 * width; guint t1,t2,t3; #define MULT(d,c,a,t) G_STMT_START { t = c * a; d = ((t >> 8) + t) >> 8; } G_STMT_END if (dest_byteorder == GDK_LSB_FIRST) { while (p < end) { MULT(q[0], p[2], p[3], t1); MULT(q[1], p[1], p[3], t2); MULT(q[2], p[0], p[3], t3); q[3] = p[3]; p += 4; q += 4; } } else { while (p < end) { q[0] = p[3]; MULT(q[1], p[0], p[3], t1); MULT(q[2], p[1], p[3], t2); MULT(q[3], p[2], p[3], t3); p += 4; q += 4; } } #undef MULT break; } case FORMAT_NONE: g_assert_not_reached (); break; } } } static void draw_with_images (GdkDrawable *drawable, GdkGC *gc, FormatType format_type, XRenderPictFormat *format, XRenderPictFormat *mask_format, guchar *src_rgb, gint src_rowstride, gint dest_x, gint dest_y, gint width, gint height) { GdkScreen *screen = GDK_DRAWABLE_IMPL_X11 (drawable)->screen; Display *xdisplay = GDK_SCREEN_XDISPLAY (screen); GdkImage *image; GdkPixmap *pix; GdkGC *pix_gc; Picture pict; Picture dest_pict; Picture mask = None; gint x0, y0; pix = gdk_pixmap_new (gdk_screen_get_root_window (screen), width, height, 32); pict = XRenderCreatePicture (xdisplay, GDK_PIXMAP_XID (pix), format, 0, NULL); if (mask_format) mask = XRenderCreatePicture (xdisplay, GDK_PIXMAP_XID (pix), mask_format, 0, NULL); dest_pict = gdk_x11_drawable_get_picture (drawable); pix_gc = gdk_gc_new (pix); for (y0 = 0; y0 < height; y0 += GDK_SCRATCH_IMAGE_HEIGHT) { gint height1 = MIN (height - y0, GDK_SCRATCH_IMAGE_HEIGHT); for (x0 = 0; x0 < width; x0 += GDK_SCRATCH_IMAGE_WIDTH) { gint xs0, ys0; gint width1 = MIN (width - x0, GDK_SCRATCH_IMAGE_WIDTH); image = _gdk_image_get_scratch (screen, width1, height1, 32, &xs0, &ys0); convert_to_format (src_rgb + y0 * src_rowstride + 4 * x0, src_rowstride, (guchar *)image->mem + ys0 * image->bpl + xs0 * image->bpp, image->bpl, format_type, image->byte_order, width1, height1); gdk_draw_image (pix, pix_gc, image, xs0, ys0, x0, y0, width1, height1); } } XRenderComposite (xdisplay, PictOpOver, pict, mask, dest_pict, 0, 0, 0, 0, dest_x, dest_y, width, height); XRenderFreePicture (xdisplay, pict); if (mask) XRenderFreePicture (xdisplay, mask); g_object_unref (pix); g_object_unref (pix_gc); } typedef struct _ShmPixmapInfo ShmPixmapInfo; struct _ShmPixmapInfo { GdkImage *image; Pixmap pix; Picture pict; Picture mask; }; /* Returns FALSE if we can't get a shm pixmap */ static gboolean get_shm_pixmap_for_image (Display *xdisplay, GdkImage *image, XRenderPictFormat *format, XRenderPictFormat *mask_format, Pixmap *pix, Picture *pict, Picture *mask) { ShmPixmapInfo *info; if (image->type != GDK_IMAGE_SHARED) return FALSE; info = g_object_get_data (G_OBJECT (image), "gdk-x11-shm-pixmap"); if (!info) { *pix = _gdk_x11_image_get_shm_pixmap (image); if (!*pix) return FALSE; info = g_new (ShmPixmapInfo, 1); info->pix = *pix; info->pict = XRenderCreatePicture (xdisplay, info->pix, format, 0, NULL); if (mask_format) info->mask = XRenderCreatePicture (xdisplay, info->pix, mask_format, 0, NULL); else info->mask = None; g_object_set_data (G_OBJECT (image), "gdk-x11-shm-pixmap", info); } *pix = info->pix; *pict = info->pict; *mask = info->mask; return TRUE; } #ifdef USE_SHM /* Returns FALSE if drawing with ShmPixmaps is not possible */ static gboolean draw_with_pixmaps (GdkDrawable *drawable, GdkGC *gc, FormatType format_type, XRenderPictFormat *format, XRenderPictFormat *mask_format, guchar *src_rgb, gint src_rowstride, gint dest_x, gint dest_y, gint width, gint height) { Display *xdisplay = GDK_SCREEN_XDISPLAY (GDK_DRAWABLE_IMPL_X11 (drawable)->screen); GdkImage *image; Pixmap pix; Picture pict; Picture dest_pict; Picture mask = None; gint x0, y0; dest_pict = gdk_x11_drawable_get_picture (drawable); for (y0 = 0; y0 < height; y0 += GDK_SCRATCH_IMAGE_HEIGHT) { gint height1 = MIN (height - y0, GDK_SCRATCH_IMAGE_HEIGHT); for (x0 = 0; x0 < width; x0 += GDK_SCRATCH_IMAGE_WIDTH) { gint xs0, ys0; gint width1 = MIN (width - x0, GDK_SCRATCH_IMAGE_WIDTH); image = _gdk_image_get_scratch (GDK_DRAWABLE_IMPL_X11 (drawable)->screen, width1, height1, 32, &xs0, &ys0); if (!get_shm_pixmap_for_image (xdisplay, image, format, mask_format, &pix, &pict, &mask)) return FALSE; convert_to_format (src_rgb + y0 * src_rowstride + 4 * x0, src_rowstride, (guchar *)image->mem + ys0 * image->bpl + xs0 * image->bpp, image->bpl, format_type, image->byte_order, width1, height1); XRenderComposite (xdisplay, PictOpOver, pict, mask, dest_pict, xs0, ys0, xs0, ys0, x0 + dest_x, y0 + dest_y, width1, height1); } } return TRUE; } #endif static void gdk_x11_draw_pixbuf (GdkDrawable *drawable, GdkGC *gc, GdkPixbuf *pixbuf, gint src_x, gint src_y, gint dest_x, gint dest_y, gint width, gint height, GdkRgbDither dither, gint x_dither, gint y_dither) { FormatType format_type; XRenderPictFormat *format, *mask_format; gint rowstride; #ifdef USE_SHM gboolean use_pixmaps = TRUE; #endif /* USE_SHM */ format_type = select_format (gdk_drawable_get_display (drawable), &format, &mask_format); if (format_type == FORMAT_NONE || !gdk_pixbuf_get_has_alpha (pixbuf) || (dither == GDK_RGB_DITHER_MAX && gdk_drawable_get_depth (drawable) != 24) || gdk_x11_drawable_get_picture (drawable) == None) { GdkDrawable *wrapper = GDK_DRAWABLE_IMPL_X11 (drawable)->wrapper; GDK_DRAWABLE_CLASS (parent_class)->draw_pixbuf (wrapper, gc, pixbuf, src_x, src_y, dest_x, dest_y, width, height, dither, x_dither, y_dither); return; } gdk_x11_drawable_update_xft_clip (drawable, gc); rowstride = gdk_pixbuf_get_rowstride (pixbuf); #ifdef USE_SHM if (use_pixmaps) { if (!draw_with_pixmaps (drawable, gc, format_type, format, mask_format, gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * 4, rowstride, dest_x, dest_y, width, height)) use_pixmaps = FALSE; } if (!use_pixmaps) #endif /* USE_SHM */ draw_with_images (drawable, gc, format_type, format, mask_format, gdk_pixbuf_get_pixels (pixbuf) + src_y * rowstride + src_x * 4, rowstride, dest_x, dest_y, width, height); }