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b=574220 remove gfxXlibNativeRenderer.cpp r=roc

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Karl Tomlinson 2010-07-02 16:04:09 +12:00
parent fde5e0a9ac
commit 060628d742
1 changed files with 0 additions and 209 deletions
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gfx/thebes/gfxXlibNativeRenderer.cpp
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@ -1,209 +0,0 @@
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Novell code.
*
* The Initial Developer of the Original Code is Novell.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* rocallahan@novell.com
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "gfxXlibNativeRenderer.h"
#include "gfxContext.h"
#include "cairo-xlib-utils.h"
#ifdef MOZ_WIDGET_GTK2
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#endif
// Look for an existing Colormap that known to be associated with visual.
static Colormap
LookupColormapForVisual(const Screen* screen, const Visual* visual)
{
// common case
if (visual == DefaultVisualOfScreen(screen))
return DefaultColormapOfScreen(screen);
#ifdef MOZ_WIDGET_GTK2
// I wish there were a gdk_x11_display_lookup_screen.
Display* dpy = DisplayOfScreen(screen);
GdkDisplay* gdkDpy = gdk_x11_lookup_xdisplay(dpy);
if (gdkDpy) {
gint screen_num = 0;
for (int s = 0; s < ScreenCount(dpy); ++s) {
if (ScreenOfDisplay(dpy, s) == screen) {
screen_num = s;
break;
}
}
GdkScreen* gdkScreen = gdk_display_get_screen(gdkDpy, screen_num);
GdkColormap* gdkColormap = NULL;
if (visual ==
GDK_VISUAL_XVISUAL(gdk_screen_get_rgb_visual(gdkScreen))) {
// widget/src/gtk2/mozcontainer.c uses gdk_rgb_get_colormap()
// which is inherited by child widgets, so this is the visual
// expected when drawing directly to widget surfaces or surfaces
// created using cairo_surface_create_similar with
// CAIRO_CONTENT_COLOR.
// gdk_screen_get_rgb_colormap is the generalization of
// gdk_rgb_get_colormap for any screen.
gdkColormap = gdk_screen_get_rgb_colormap(gdkScreen);
}
else if (visual ==
GDK_VISUAL_XVISUAL(gdk_screen_get_rgba_visual(gdkScreen))) {
// This is the visual expected on displays with the Composite
// extension enabled when the surface has been created using
// cairo_surface_create_similar with CAIRO_CONTENT_COLOR_ALPHA,
// as happens with non-unit opacity.
gdkColormap = gdk_screen_get_rgba_colormap(gdkScreen);
}
if (gdkColormap != NULL)
return GDK_COLORMAP_XCOLORMAP(gdkColormap);
}
#endif
return None;
}
typedef struct {
gfxXlibNativeRenderer* mRenderer;
nsresult mRV;
} NativeRenderingClosure;
static cairo_bool_t
NativeRendering(void *closure,
Screen *screen,
Drawable drawable,
Visual *visual,
short offset_x, short offset_y,
XRectangle* rectangles, unsigned int num_rects)
{
// Cairo doesn't provide a Colormap.
// See if a suitable existing Colormap is known.
Colormap colormap = LookupColormapForVisual(screen, visual);
PRBool allocColormap = colormap == None;
if (allocColormap) {
// No existing colormap found.
// This case is not expected with MOZ_WIDGET_GTK2.
// Create a Colormap for the Visual.
// This is only really useful for Visual classes with predefined
// Colormap entries, but cairo would be all confused with
// non-default non-TrueColor colormaps anyway.
NS_ASSERTION(visual->c_class == TrueColor ||
visual->c_class == StaticColor ||
visual->c_class == StaticGray,
"Creating empty colormap");
// If this case were expected then it might be worth considering
// using a service that maintains a set of Colormaps for associated
// Visuals so as to avoid repeating the LockDisplay required in
// XCreateColormap, but then it's no worse than the XCreatePixmap
// that produced the Drawable here.
colormap = XCreateColormap(DisplayOfScreen(screen),
RootWindowOfScreen(screen),
visual, AllocNone);
}
NativeRenderingClosure* cl = (NativeRenderingClosure*)closure;
nsresult rv = cl->mRenderer->
NativeDraw(screen, drawable, visual, colormap, offset_x, offset_y,
rectangles, num_rects);
cl->mRV = rv;
if (allocColormap) {
XFreeColormap(DisplayOfScreen(screen), colormap);
}
return NS_SUCCEEDED(rv);
}
nsresult
gfxXlibNativeRenderer::Draw(Display* dpy, gfxContext* ctx, int width, int height,
PRUint32 flags, DrawOutput* output)
{
NativeRenderingClosure closure = { this, NS_OK };
cairo_xlib_drawing_result_t result;
// Make sure result.surface is null to start with; we rely on it
// being non-null meaning that a surface actually got allocated.
result.surface = NULL;
if (output) {
output->mSurface = NULL;
output->mUniformAlpha = PR_FALSE;
output->mUniformColor = PR_FALSE;
}
int cairoFlags = 0;
if (flags & DRAW_SUPPORTS_OFFSET) {
cairoFlags |= CAIRO_XLIB_DRAWING_SUPPORTS_OFFSET;
}
if (flags & DRAW_SUPPORTS_CLIP_RECT) {
cairoFlags |= CAIRO_XLIB_DRAWING_SUPPORTS_CLIP_RECT;
}
if (flags & DRAW_SUPPORTS_CLIP_LIST) {
cairoFlags |= CAIRO_XLIB_DRAWING_SUPPORTS_CLIP_LIST;
}
if (flags & DRAW_SUPPORTS_ALTERNATE_SCREEN) {
cairoFlags |= CAIRO_XLIB_DRAWING_SUPPORTS_ALTERNATE_SCREEN;
}
if (flags & DRAW_SUPPORTS_NONDEFAULT_VISUAL) {
cairoFlags |= CAIRO_XLIB_DRAWING_SUPPORTS_NONDEFAULT_VISUAL;
}
cairo_draw_with_xlib(ctx->GetCairo(), NativeRendering, &closure, dpy,
width, height,
(flags & DRAW_IS_OPAQUE) ? CAIRO_XLIB_DRAWING_OPAQUE
: CAIRO_XLIB_DRAWING_TRANSPARENT,
(cairo_xlib_drawing_support_t)cairoFlags,
output ? &result : NULL);
if (NS_FAILED(closure.mRV)) {
if (result.surface) {
NS_ASSERTION(output, "How did that happen?");
cairo_surface_destroy (result.surface);
}
return closure.mRV;
}
if (output) {
if (result.surface) {
output->mSurface = gfxASurface::Wrap(result.surface);
if (!output->mSurface) {
cairo_surface_destroy (result.surface);
return NS_ERROR_OUT_OF_MEMORY;
}
}
output->mUniformAlpha = result.uniform_alpha;
output->mUniformColor = result.uniform_color;
output->mColor = gfxRGBA(result.r, result.g, result.b, result.alpha);
}
return NS_OK;
}