зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
4.3 KiB
C++
138 строки
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gfxQuartzSurface.h"
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#include "gfxContext.h"
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#include "gfxImageSurface.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/HelpersCairo.h"
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#include "cairo-quartz.h"
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void
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gfxQuartzSurface::MakeInvalid()
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{
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mSize = mozilla::gfx::IntSize(-1, -1);
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}
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gfxQuartzSurface::gfxQuartzSurface(const mozilla::gfx::IntSize& desiredSize,
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gfxImageFormat format)
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: mCGContext(nullptr), mSize(desiredSize)
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{
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if (!mozilla::gfx::Factory::CheckSurfaceSize(desiredSize))
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MakeInvalid();
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unsigned int width = static_cast<unsigned int>(mSize.width);
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unsigned int height = static_cast<unsigned int>(mSize.height);
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cairo_format_t cformat = GfxFormatToCairoFormat(format);
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cairo_surface_t *surf = cairo_quartz_surface_create(cformat, width, height);
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mCGContext = cairo_quartz_surface_get_cg_context (surf);
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CGContextRetain(mCGContext);
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Init(surf);
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if (mSurfaceValid) {
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RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));
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}
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}
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gfxQuartzSurface::gfxQuartzSurface(CGContextRef context,
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const mozilla::gfx::IntSize& size)
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: mCGContext(context), mSize(size)
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{
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if (!mozilla::gfx::Factory::CheckSurfaceSize(size))
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MakeInvalid();
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unsigned int width = static_cast<unsigned int>(mSize.width);
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unsigned int height = static_cast<unsigned int>(mSize.height);
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cairo_surface_t *surf =
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cairo_quartz_surface_create_for_cg_context(context,
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width, height);
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CGContextRetain(mCGContext);
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Init(surf);
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if (mSurfaceValid) {
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RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));
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}
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}
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gfxQuartzSurface::gfxQuartzSurface(cairo_surface_t *csurf,
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const mozilla::gfx::IntSize& aSize) :
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mSize(aSize)
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{
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mCGContext = cairo_quartz_surface_get_cg_context (csurf);
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CGContextRetain (mCGContext);
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Init(csurf, true);
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}
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gfxQuartzSurface::gfxQuartzSurface(unsigned char *data,
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const mozilla::gfx::IntSize& aSize,
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long stride,
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gfxImageFormat format)
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: mCGContext(nullptr), mSize(aSize.width, aSize.height)
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{
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if (!mozilla::gfx::Factory::CheckSurfaceSize(aSize))
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MakeInvalid();
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cairo_format_t cformat = GfxFormatToCairoFormat(format);
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cairo_surface_t *surf = cairo_quartz_surface_create_for_data
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(data, cformat, aSize.width, aSize.height, stride);
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mCGContext = cairo_quartz_surface_get_cg_context (surf);
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CGContextRetain(mCGContext);
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Init(surf);
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if (mSurfaceValid) {
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RecordMemoryUsed(mSize.height * stride + sizeof(gfxQuartzSurface));
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}
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}
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already_AddRefed<gfxASurface>
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gfxQuartzSurface::CreateSimilarSurface(gfxContentType aType,
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const mozilla::gfx::IntSize& aSize)
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{
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cairo_surface_t *surface =
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cairo_quartz_surface_create_cg_layer(mSurface, (cairo_content_t)aType,
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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 nullptr;
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}
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RefPtr<gfxASurface> result = Wrap(surface, aSize);
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cairo_surface_destroy(surface);
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return result.forget();
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}
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already_AddRefed<gfxImageSurface> gfxQuartzSurface::GetAsImageSurface()
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{
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cairo_surface_t *surface = cairo_quartz_surface_get_image(mSurface);
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if (!surface || cairo_surface_status(surface))
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return nullptr;
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RefPtr<gfxASurface> img = Wrap(surface);
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// cairo_quartz_surface_get_image returns a referenced image, and thebes
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// shares the refcounts of Cairo surfaces. However, Wrap also adds a
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// reference to the image. We need to remove one of these references
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// explicitly so we don't leak.
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img.get()->Release();
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img->SetOpaqueRect(GetOpaqueRect());
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return img.forget().downcast<gfxImageSurface>();
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}
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gfxQuartzSurface::~gfxQuartzSurface()
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{
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CGContextRelease(mCGContext);
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}
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