зеркало из https://github.com/mozilla/gecko-dev.git
778 строки
20 KiB
C++
778 строки
20 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Foundation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Stuart Parmenter <stuart@mozilla.com>
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* Vladimir Vukicevic <vladimir@pobox.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsIMemoryReporter.h"
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#include "nsMemory.h"
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#include "CheckedInt.h"
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#include "gfxASurface.h"
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#include "gfxContext.h"
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#include "gfxImageSurface.h"
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#include "nsRect.h"
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#include "cairo.h"
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#ifdef CAIRO_HAS_WIN32_SURFACE
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#include "gfxWindowsSurface.h"
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#endif
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#ifdef CAIRO_HAS_D2D_SURFACE
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#include "gfxD2DSurface.h"
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#endif
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#ifdef MOZ_X11
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#include "gfxXlibSurface.h"
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#endif
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#ifdef CAIRO_HAS_QUARTZ_SURFACE
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#include "gfxQuartzSurface.h"
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#include "gfxQuartzImageSurface.h"
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#endif
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#ifdef MOZ_DFB
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#include "gfxDirectFBSurface.h"
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#endif
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#if defined(CAIRO_HAS_QT_SURFACE) && defined(MOZ_WIDGET_QT)
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#include "gfxQPainterSurface.h"
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#endif
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#include <stdio.h>
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#include <limits.h>
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#include "imgIEncoder.h"
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#include "nsComponentManagerUtils.h"
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#include "gfxContext.h"
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#include "prmem.h"
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#include "nsISupportsUtils.h"
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#include "plbase64.h"
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#include "nsCOMPtr.h"
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#include "nsIConsoleService.h"
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#include "nsServiceManagerUtils.h"
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using mozilla::CheckedInt;
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static cairo_user_data_key_t gfxasurface_pointer_key;
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// Surfaces use refcounting that's tied to the cairo surface refcnt, to avoid
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// refcount mismatch issues.
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nsrefcnt
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gfxASurface::AddRef(void)
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{
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if (mSurfaceValid) {
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if (mFloatingRefs) {
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// eat a floating ref
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mFloatingRefs--;
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} else {
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cairo_surface_reference(mSurface);
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}
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return (nsrefcnt) cairo_surface_get_reference_count(mSurface);
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} else {
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// the surface isn't valid, but we still need to refcount
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// the gfxASurface
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return ++mFloatingRefs;
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}
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}
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nsrefcnt
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gfxASurface::Release(void)
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{
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if (mSurfaceValid) {
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NS_ASSERTION(mFloatingRefs == 0, "gfxASurface::Release with floating refs still hanging around!");
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// Note that there is a destructor set on user data for mSurface,
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// which will delete this gfxASurface wrapper when the surface's refcount goes
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// out of scope.
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nsrefcnt refcnt = (nsrefcnt) cairo_surface_get_reference_count(mSurface);
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cairo_surface_destroy(mSurface);
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// |this| may not be valid any more, don't use it!
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return --refcnt;
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} else {
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if (--mFloatingRefs == 0) {
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delete this;
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return 0;
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}
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return mFloatingRefs;
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}
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}
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void
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gfxASurface::SurfaceDestroyFunc(void *data) {
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gfxASurface *surf = (gfxASurface*) data;
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// fprintf (stderr, "Deleting wrapper for %p (wrapper: %p)\n", surf->mSurface, data);
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delete surf;
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}
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gfxASurface*
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gfxASurface::GetSurfaceWrapper(cairo_surface_t *csurf)
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{
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return (gfxASurface*) cairo_surface_get_user_data(csurf, &gfxasurface_pointer_key);
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}
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void
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gfxASurface::SetSurfaceWrapper(cairo_surface_t *csurf, gfxASurface *asurf)
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{
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cairo_surface_set_user_data(csurf, &gfxasurface_pointer_key, asurf, SurfaceDestroyFunc);
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}
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already_AddRefed<gfxASurface>
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gfxASurface::Wrap (cairo_surface_t *csurf)
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{
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gfxASurface *result;
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/* Do we already have a wrapper for this surface? */
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result = GetSurfaceWrapper(csurf);
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if (result) {
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// fprintf(stderr, "Existing wrapper for %p -> %p\n", csurf, result);
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NS_ADDREF(result);
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return result;
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}
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/* No wrapper; figure out the surface type and create it */
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cairo_surface_type_t stype = cairo_surface_get_type(csurf);
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if (stype == CAIRO_SURFACE_TYPE_IMAGE) {
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result = new gfxImageSurface(csurf);
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}
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#ifdef CAIRO_HAS_WIN32_SURFACE
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else if (stype == CAIRO_SURFACE_TYPE_WIN32 ||
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stype == CAIRO_SURFACE_TYPE_WIN32_PRINTING) {
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result = new gfxWindowsSurface(csurf);
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}
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#endif
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#ifdef CAIRO_HAS_D2D_SURFACE
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else if (stype == CAIRO_SURFACE_TYPE_D2D) {
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result = new gfxD2DSurface(csurf);
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}
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#endif
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#ifdef MOZ_X11
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else if (stype == CAIRO_SURFACE_TYPE_XLIB) {
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result = new gfxXlibSurface(csurf);
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}
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#endif
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#ifdef CAIRO_HAS_QUARTZ_SURFACE
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else if (stype == CAIRO_SURFACE_TYPE_QUARTZ) {
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result = new gfxQuartzSurface(csurf);
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}
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else if (stype == CAIRO_SURFACE_TYPE_QUARTZ_IMAGE) {
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result = new gfxQuartzImageSurface(csurf);
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}
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#endif
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#ifdef MOZ_DFB
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else if (stype == CAIRO_SURFACE_TYPE_DIRECTFB) {
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result = new gfxDirectFBSurface(csurf);
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}
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#endif
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#if defined(CAIRO_HAS_QT_SURFACE) && defined(MOZ_WIDGET_QT)
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else if (stype == CAIRO_SURFACE_TYPE_QT) {
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result = new gfxQPainterSurface(csurf);
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}
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#endif
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else {
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result = new gfxUnknownSurface(csurf);
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}
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// fprintf(stderr, "New wrapper for %p -> %p\n", csurf, result);
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NS_ADDREF(result);
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return result;
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}
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void
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gfxASurface::Init(cairo_surface_t* surface, PRBool existingSurface)
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{
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if (cairo_surface_status(surface)) {
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// the surface has an error on it
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mSurfaceValid = PR_FALSE;
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cairo_surface_destroy(surface);
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return;
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}
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SetSurfaceWrapper(surface, this);
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mSurface = surface;
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mSurfaceValid = PR_TRUE;
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if (existingSurface) {
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mFloatingRefs = 0;
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} else {
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mFloatingRefs = 1;
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#ifdef MOZ_TREE_CAIRO
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if (cairo_surface_get_content(surface) != CAIRO_CONTENT_COLOR) {
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cairo_surface_set_subpixel_antialiasing(surface, CAIRO_SUBPIXEL_ANTIALIASING_DISABLED);
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}
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#endif
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}
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}
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gfxASurface::gfxSurfaceType
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gfxASurface::GetType() const
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{
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if (!mSurfaceValid)
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return (gfxSurfaceType)-1;
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return (gfxSurfaceType)cairo_surface_get_type(mSurface);
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}
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gfxASurface::gfxContentType
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gfxASurface::GetContentType() const
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{
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if (!mSurfaceValid)
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return (gfxContentType)-1;
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return (gfxContentType)cairo_surface_get_content(mSurface);
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}
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void
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gfxASurface::SetDeviceOffset(const gfxPoint& offset)
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{
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cairo_surface_set_device_offset(mSurface,
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offset.x, offset.y);
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}
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gfxPoint
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gfxASurface::GetDeviceOffset() const
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{
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gfxPoint pt;
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cairo_surface_get_device_offset(mSurface, &pt.x, &pt.y);
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return pt;
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}
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void
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gfxASurface::Flush() const
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{
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cairo_surface_flush(mSurface);
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}
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void
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gfxASurface::MarkDirty()
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{
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cairo_surface_mark_dirty(mSurface);
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}
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void
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gfxASurface::MarkDirty(const gfxRect& r)
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{
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cairo_surface_mark_dirty_rectangle(mSurface,
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(int) r.X(), (int) r.Y(),
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(int) r.Width(), (int) r.Height());
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}
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void
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gfxASurface::SetData(const cairo_user_data_key_t *key,
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void *user_data,
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thebes_destroy_func_t destroy)
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{
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cairo_surface_set_user_data(mSurface, key, user_data, destroy);
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}
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void *
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gfxASurface::GetData(const cairo_user_data_key_t *key)
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{
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return cairo_surface_get_user_data(mSurface, key);
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}
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void
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gfxASurface::Finish()
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{
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cairo_surface_finish(mSurface);
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}
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already_AddRefed<gfxASurface>
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gfxASurface::CreateSimilarSurface(gfxContentType aContent,
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const gfxIntSize& aSize)
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{
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if (!mSurface || !mSurfaceValid) {
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return nsnull;
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}
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cairo_surface_t *surface =
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cairo_surface_create_similar(mSurface, cairo_content_t(aContent),
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aSize.width, aSize.height);
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if (cairo_surface_status(surface)) {
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cairo_surface_destroy(surface);
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return nsnull;
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}
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nsRefPtr<gfxASurface> result = Wrap(surface);
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cairo_surface_destroy(surface);
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return result.forget();
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}
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int
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gfxASurface::CairoStatus()
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{
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if (!mSurfaceValid)
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return -1;
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return cairo_surface_status(mSurface);
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}
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/* static */
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PRBool
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gfxASurface::CheckSurfaceSize(const gfxIntSize& sz, PRInt32 limit)
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{
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if (sz.width < 0 || sz.height < 0) {
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NS_WARNING("Surface width or height < 0!");
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return PR_FALSE;
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}
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// reject images with sides bigger than limit
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if (limit && (sz.width > limit || sz.height > limit)) {
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NS_WARNING("Surface size too large (exceeds caller's limit)!");
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return PR_FALSE;
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}
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#if defined(XP_MACOSX)
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// CoreGraphics is limited to images < 32K in *height*,
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// so clamp all surfaces on the Mac to that height
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if (sz.height > SHRT_MAX) {
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NS_WARNING("Surface size too large (exceeds CoreGraphics limit)!");
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return PR_FALSE;
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}
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#endif
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// make sure the surface area doesn't overflow a PRInt32
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CheckedInt<PRInt32> tmp = sz.width;
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tmp *= sz.height;
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if (!tmp.valid()) {
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NS_WARNING("Surface size too large (would overflow)!");
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return PR_FALSE;
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}
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// assuming 4-byte stride, make sure the allocation size
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// doesn't overflow a PRInt32 either
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tmp *= 4;
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if (!tmp.valid()) {
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NS_WARNING("Allocation too large (would overflow)!");
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return PR_FALSE;
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}
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return PR_TRUE;
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}
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/* static */
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PRInt32
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gfxASurface::FormatStrideForWidth(gfxImageFormat format, PRInt32 width)
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{
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return cairo_format_stride_for_width((cairo_format_t)format, (int)width);
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}
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nsresult
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gfxASurface::BeginPrinting(const nsAString& aTitle, const nsAString& aPrintToFileName)
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{
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return NS_OK;
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}
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nsresult
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gfxASurface::EndPrinting()
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{
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return NS_OK;
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}
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nsresult
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gfxASurface::AbortPrinting()
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{
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return NS_OK;
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}
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nsresult
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gfxASurface::BeginPage()
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{
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return NS_OK;
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}
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nsresult
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gfxASurface::EndPage()
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{
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return NS_OK;
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}
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gfxASurface::gfxContentType
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gfxASurface::ContentFromFormat(gfxImageFormat format)
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{
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switch (format) {
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case ImageFormatARGB32:
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return CONTENT_COLOR_ALPHA;
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case ImageFormatRGB24:
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case ImageFormatRGB16_565:
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return CONTENT_COLOR;
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case ImageFormatA8:
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case ImageFormatA1:
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return CONTENT_ALPHA;
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case ImageFormatUnknown:
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default:
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return CONTENT_COLOR;
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}
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}
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gfxASurface::gfxImageFormat
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gfxASurface::FormatFromContent(gfxASurface::gfxContentType type)
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{
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switch (type) {
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case CONTENT_COLOR_ALPHA:
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return ImageFormatARGB32;
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case CONTENT_ALPHA:
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return ImageFormatA8;
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case CONTENT_COLOR:
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default:
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return ImageFormatRGB24;
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}
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}
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void
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gfxASurface::SetSubpixelAntialiasingEnabled(PRBool aEnabled)
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{
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#ifdef MOZ_TREE_CAIRO
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if (!mSurfaceValid)
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return;
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cairo_surface_set_subpixel_antialiasing(mSurface,
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aEnabled ? CAIRO_SUBPIXEL_ANTIALIASING_ENABLED : CAIRO_SUBPIXEL_ANTIALIASING_DISABLED);
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#endif
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}
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PRBool
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gfxASurface::GetSubpixelAntialiasingEnabled()
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{
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if (!mSurfaceValid)
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return PR_FALSE;
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#ifdef MOZ_TREE_CAIRO
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return cairo_surface_get_subpixel_antialiasing(mSurface) == CAIRO_SUBPIXEL_ANTIALIASING_ENABLED;
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#else
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return PR_TRUE;
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#endif
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}
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PRInt32
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gfxASurface::BytePerPixelFromFormat(gfxImageFormat format)
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{
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switch (format) {
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case ImageFormatARGB32:
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case ImageFormatRGB24:
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return 4;
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case ImageFormatRGB16_565:
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return 2;
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case ImageFormatA8:
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return 1;
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default:
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NS_WARNING("Unknown byte per pixel value for Image format");
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}
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return 0;
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}
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void
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gfxASurface::FastMovePixels(const nsIntRect& aSourceRect,
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const nsIntPoint& aDestTopLeft)
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{
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// Used when the backend can internally handle self copies.
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gfxIntSize size = GetSize();
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nsIntRect dest(aDestTopLeft, aSourceRect.Size());
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nsRefPtr<gfxContext> ctx = new gfxContext(this);
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ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
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nsIntPoint srcOrigin = dest.TopLeft() - aSourceRect.TopLeft();
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ctx->SetSource(this, gfxPoint(srcOrigin.x, srcOrigin.y));
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ctx->Rectangle(gfxRect(dest.x, dest.y, dest.width, dest.height));
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ctx->Fill();
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}
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void
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gfxASurface::MovePixels(const nsIntRect& aSourceRect,
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const nsIntPoint& aDestTopLeft)
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{
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// Assume the backend can't handle self copying well and allocate
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// a temporary surface instead.
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nsRefPtr<gfxASurface> tmp =
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CreateSimilarSurface(GetContentType(),
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gfxIntSize(aSourceRect.width, aSourceRect.height));
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nsRefPtr<gfxContext> ctx = new gfxContext(tmp);
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ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
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ctx->SetSource(this, gfxPoint(-aSourceRect.x, -aSourceRect.y));
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ctx->Paint();
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ctx = new gfxContext(this);
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ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
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ctx->SetSource(tmp, gfxPoint(aDestTopLeft.x, aDestTopLeft.y));
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ctx->Rectangle(gfxRect(aDestTopLeft.x,
|
|
aDestTopLeft.y,
|
|
aSourceRect.width,
|
|
aSourceRect.height));
|
|
ctx->Fill();
|
|
}
|
|
|
|
/** Memory reporting **/
|
|
|
|
static const char *sSurfaceNamesForSurfaceType[] = {
|
|
"gfx-surface-image",
|
|
"gfx-surface-pdf",
|
|
"gfx-surface-ps",
|
|
"gfx-surface-xlib",
|
|
"gfx-surface-xcb",
|
|
"gfx-surface-glitz",
|
|
"gfx-surface-quartz",
|
|
"gfx-surface-win32",
|
|
"gfx-surface-beos",
|
|
"gfx-surface-directfb",
|
|
"gfx-surface-svg",
|
|
"gfx-surface-os2",
|
|
"gfx-surface-win32printing",
|
|
"gfx-surface-quartzimage",
|
|
"gfx-surface-script",
|
|
"gfx-surface-qpainter",
|
|
"gfx-surface-recording",
|
|
"gfx-surface-vg",
|
|
"gfx-surface-gl",
|
|
"gfx-surface-drm",
|
|
"gfx-surface-tee",
|
|
"gfx-surface-xml",
|
|
"gfx-surface-skia",
|
|
"gfx-surface-subsurface",
|
|
"gfx-surface-d2d"
|
|
};
|
|
|
|
PR_STATIC_ASSERT(NS_ARRAY_LENGTH(sSurfaceNamesForSurfaceType) == gfxASurface::SurfaceTypeMax);
|
|
#ifdef CAIRO_HAS_D2D_SURFACE
|
|
PR_STATIC_ASSERT(PRUint32(CAIRO_SURFACE_TYPE_D2D) == PRUint32(gfxASurface::SurfaceTypeD2D));
|
|
#endif
|
|
PR_STATIC_ASSERT(PRUint32(CAIRO_SURFACE_TYPE_SKIA) == PRUint32(gfxASurface::SurfaceTypeSkia));
|
|
|
|
static const char *
|
|
SurfaceMemoryReporterPathForType(gfxASurface::gfxSurfaceType aType)
|
|
{
|
|
if (aType < 0 ||
|
|
aType >= gfxASurface::SurfaceTypeMax)
|
|
return "gfx-surface-unknown";
|
|
|
|
return sSurfaceNamesForSurfaceType[aType];
|
|
}
|
|
|
|
/* Surface size memory reporting */
|
|
static nsIMemoryReporter *gSurfaceMemoryReporters[gfxASurface::SurfaceTypeMax] = { 0 };
|
|
static PRInt64 gSurfaceMemoryUsed[gfxASurface::SurfaceTypeMax] = { 0 };
|
|
|
|
class SurfaceMemoryReporter :
|
|
public nsIMemoryReporter
|
|
{
|
|
public:
|
|
SurfaceMemoryReporter(gfxASurface::gfxSurfaceType aType)
|
|
: mType(aType)
|
|
{ }
|
|
|
|
NS_DECL_ISUPPORTS
|
|
|
|
NS_IMETHOD GetProcess(char **process) {
|
|
*process = strdup("");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD GetPath(char **memoryPath) {
|
|
*memoryPath = strdup(SurfaceMemoryReporterPathForType(mType));
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD GetKind(PRInt32 *kind) {
|
|
*kind = MR_OTHER;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD GetDescription(char **desc) {
|
|
*desc = strdup("Memory used by gfx surface of the given type.");
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD GetMemoryUsed(PRInt64 *memoryUsed) {
|
|
*memoryUsed = gSurfaceMemoryUsed[mType];
|
|
return NS_OK;
|
|
}
|
|
|
|
gfxASurface::gfxSurfaceType mType;
|
|
};
|
|
|
|
NS_IMPL_ISUPPORTS1(SurfaceMemoryReporter, nsIMemoryReporter)
|
|
|
|
void
|
|
gfxASurface::RecordMemoryUsedForSurfaceType(gfxASurface::gfxSurfaceType aType,
|
|
PRInt32 aBytes)
|
|
{
|
|
if (aType < 0 || aType >= SurfaceTypeMax) {
|
|
NS_WARNING("Invalid type to RecordMemoryUsedForSurfaceType!");
|
|
return;
|
|
}
|
|
|
|
if (gSurfaceMemoryReporters[aType] == 0) {
|
|
gSurfaceMemoryReporters[aType] = new SurfaceMemoryReporter(aType);
|
|
NS_RegisterMemoryReporter(gSurfaceMemoryReporters[aType]);
|
|
}
|
|
|
|
gSurfaceMemoryUsed[aType] += aBytes;
|
|
}
|
|
|
|
void
|
|
gfxASurface::RecordMemoryUsed(PRInt32 aBytes)
|
|
{
|
|
RecordMemoryUsedForSurfaceType(GetType(), aBytes);
|
|
mBytesRecorded += aBytes;
|
|
}
|
|
|
|
void
|
|
gfxASurface::RecordMemoryFreed()
|
|
{
|
|
if (mBytesRecorded) {
|
|
RecordMemoryUsedForSurfaceType(GetType(), -mBytesRecorded);
|
|
mBytesRecorded = 0;
|
|
}
|
|
}
|
|
|
|
void
|
|
gfxASurface::DumpAsDataURL()
|
|
{
|
|
gfxIntSize size = GetSize();
|
|
if (size.width == -1 && size.height == -1) {
|
|
printf("Could not determine surface size\n");
|
|
return;
|
|
}
|
|
|
|
nsAutoArrayPtr<PRUint8> imageBuffer(new (std::nothrow) PRUint8[size.width *
|
|
size.height *
|
|
4]);
|
|
if (!imageBuffer) {
|
|
printf("Could not allocate image buffer\n");
|
|
return;
|
|
}
|
|
|
|
nsRefPtr<gfxImageSurface> imgsurf =
|
|
new gfxImageSurface(imageBuffer.get(),
|
|
gfxIntSize(size.width, size.height),
|
|
size.width * 4,
|
|
gfxASurface::ImageFormatARGB32);
|
|
|
|
if (!imgsurf || imgsurf->CairoStatus()) {
|
|
printf("Could not allocate image surface\n");
|
|
return;
|
|
}
|
|
|
|
nsRefPtr<gfxContext> ctx = new gfxContext(imgsurf);
|
|
if (!ctx || ctx->HasError()) {
|
|
printf("Could not allocate image context\n");
|
|
return;
|
|
}
|
|
|
|
ctx->SetOperator(gfxContext::OPERATOR_SOURCE);
|
|
ctx->SetSource(this, gfxPoint(0, 0));
|
|
ctx->Paint();
|
|
|
|
nsCOMPtr<imgIEncoder> encoder =
|
|
do_CreateInstance("@mozilla.org/image/encoder;2?type=image/png");
|
|
if (!encoder) {
|
|
PRInt32 w = NS_MIN(size.width, 8);
|
|
PRInt32 h = NS_MIN(size.height, 8);
|
|
printf("Could not create encoder. Printing %dx%d pixels.\n", w, h);
|
|
for (PRInt32 y = 0; y < h; ++y) {
|
|
for (PRInt32 x = 0; x < w; ++x) {
|
|
printf("%x ", reinterpret_cast<PRUint32*>(imageBuffer.get())[y*size.width + x]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
nsresult rv = encoder->InitFromData(imageBuffer.get(),
|
|
size.width * size.height * 4,
|
|
size.width,
|
|
size.height,
|
|
size.width * 4,
|
|
imgIEncoder::INPUT_FORMAT_HOSTARGB,
|
|
NS_LITERAL_STRING(""));
|
|
if (NS_FAILED(rv))
|
|
return;
|
|
|
|
nsCOMPtr<nsIInputStream> imgStream;
|
|
CallQueryInterface(encoder.get(), getter_AddRefs(imgStream));
|
|
if (!imgStream)
|
|
return;
|
|
|
|
PRUint32 bufSize;
|
|
rv = imgStream->Available(&bufSize);
|
|
if (NS_FAILED(rv))
|
|
return;
|
|
|
|
// ...leave a little extra room so we can call read again and make sure we
|
|
// got everything. 16 bytes for better padding (maybe)
|
|
bufSize += 16;
|
|
PRUint32 imgSize = 0;
|
|
char* imgData = (char*)PR_Malloc(bufSize);
|
|
if (!imgData)
|
|
return;
|
|
PRUint32 numReadThisTime = 0;
|
|
while ((rv = imgStream->Read(&imgData[imgSize],
|
|
bufSize - imgSize,
|
|
&numReadThisTime)) == NS_OK && numReadThisTime > 0)
|
|
{
|
|
imgSize += numReadThisTime;
|
|
if (imgSize == bufSize) {
|
|
// need a bigger buffer, just double
|
|
bufSize *= 2;
|
|
char* newImgData = (char*)PR_Realloc(imgData, bufSize);
|
|
if (!newImgData) {
|
|
PR_Free(imgData);
|
|
return;
|
|
}
|
|
imgData = newImgData;
|
|
}
|
|
}
|
|
|
|
// base 64, result will be NULL terminated
|
|
char* encodedImg = PL_Base64Encode(imgData, imgSize, nsnull);
|
|
PR_Free(imgData);
|
|
if (!encodedImg) // not sure why this would fail
|
|
return;
|
|
|
|
printf("data:image/png;base64,");
|
|
printf("%s", encodedImg);
|
|
printf("\n");
|
|
PR_Free(encodedImg);
|
|
|
|
return;
|
|
}
|
|
|