gecko/gfx/thebes/gfxQuartzSurface.cpp
2011-10-17 10:59:28 -04:00

182 lines
6.2 KiB
C++

/* -*- 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 Mozilla Corporation code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.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 "gfxQuartzSurface.h"
#include "gfxContext.h"
#include "cairo-quartz.h"
void
gfxQuartzSurface::MakeInvalid()
{
mSize = gfxIntSize(-1, -1);
}
gfxQuartzSurface::gfxQuartzSurface(const gfxSize& desiredSize, gfxImageFormat format,
bool aForPrinting)
: mCGContext(NULL), mSize(desiredSize), mForPrinting(aForPrinting)
{
gfxIntSize size((unsigned int) floor(desiredSize.width),
(unsigned int) floor(desiredSize.height));
if (!CheckSurfaceSize(size))
MakeInvalid();
unsigned int width = static_cast<unsigned int>(mSize.width);
unsigned int height = static_cast<unsigned int>(mSize.height);
cairo_surface_t *surf = cairo_quartz_surface_create
((cairo_format_t) format, width, height);
mCGContext = cairo_quartz_surface_get_cg_context (surf);
CGContextRetain(mCGContext);
Init(surf);
}
gfxQuartzSurface::gfxQuartzSurface(CGContextRef context,
const gfxSize& desiredSize,
bool aForPrinting)
: mCGContext(context), mSize(desiredSize), mForPrinting(aForPrinting)
{
gfxIntSize size((unsigned int) floor(desiredSize.width),
(unsigned int) floor(desiredSize.height));
if (!CheckSurfaceSize(size))
MakeInvalid();
unsigned int width = static_cast<unsigned int>(mSize.width);
unsigned int height = static_cast<unsigned int>(mSize.height);
cairo_surface_t *surf =
cairo_quartz_surface_create_for_cg_context(context,
width, height);
CGContextRetain(mCGContext);
Init(surf);
}
gfxQuartzSurface::gfxQuartzSurface(cairo_surface_t *csurf,
bool aForPrinting) :
mSize(-1.0, -1.0), mForPrinting(aForPrinting)
{
mCGContext = cairo_quartz_surface_get_cg_context (csurf);
CGContextRetain (mCGContext);
Init(csurf, true);
}
gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,
const gfxSize& desiredSize,
long stride,
gfxImageFormat format,
bool aForPrinting)
: mCGContext(nsnull), mSize(desiredSize), mForPrinting(aForPrinting)
{
gfxIntSize size((unsigned int) floor(desiredSize.width),
(unsigned int) floor(desiredSize.height));
if (!CheckSurfaceSize(size))
MakeInvalid();
unsigned int width = static_cast<unsigned int>(mSize.width);
unsigned int height = static_cast<unsigned int>(mSize.height);
cairo_surface_t *surf = cairo_quartz_surface_create_for_data
(data, (cairo_format_t) format, width, height, stride);
mCGContext = cairo_quartz_surface_get_cg_context (surf);
CGContextRetain(mCGContext);
Init(surf);
}
already_AddRefed<gfxASurface>
gfxQuartzSurface::CreateSimilarSurface(gfxContentType aType,
const gfxIntSize& aSize)
{
cairo_surface_t *surface =
cairo_quartz_surface_create_cg_layer(mSurface, (cairo_content_t)aType,
aSize.width, aSize.height);
if (cairo_surface_status(surface)) {
cairo_surface_destroy(surface);
return nsnull;
}
nsRefPtr<gfxASurface> result = Wrap(surface);
cairo_surface_destroy(surface);
return result.forget();
}
CGContextRef
gfxQuartzSurface::GetCGContextWithClip(gfxContext *ctx)
{
return cairo_quartz_get_cg_context_with_clip(ctx->GetCairo());
}
PRInt32 gfxQuartzSurface::GetDefaultContextFlags() const
{
if (mForPrinting)
return gfxContext::FLAG_DISABLE_SNAPPING |
gfxContext::FLAG_DISABLE_COPY_BACKGROUND;
return 0;
}
already_AddRefed<gfxImageSurface> gfxQuartzSurface::GetAsImageSurface()
{
cairo_surface_t *surface = cairo_quartz_surface_get_image(mSurface);
if (!surface)
return nsnull;
nsRefPtr<gfxASurface> img = Wrap(surface);
// cairo_quartz_surface_get_image returns a referenced image, and thebes
// shares the refcounts of Cairo surfaces. However, Wrap also adds a
// reference to the image. We need to remove one of these references
// explicitly so we don't leak.
gfxImageSurface* imgSurface = static_cast<gfxImageSurface*> (img.forget().get());
imgSurface->Release();
return imgSurface;
}
gfxQuartzSurface::~gfxQuartzSurface()
{
CGContextRelease(mCGContext);
}