121 lines
3.2 KiB
C++
121 lines
3.2 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 "PrintTargetCG.h"
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#include "cairo.h"
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#include "cairo-quartz.h"
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#include "mozilla/gfx/HelpersCairo.h"
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namespace mozilla {
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namespace gfx {
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PrintTargetCG::PrintTargetCG(cairo_surface_t* aCairoSurface,
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const IntSize& aSize)
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: PrintTarget(aCairoSurface, aSize)
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{
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// TODO: Add memory reporting like gfxQuartzSurface.
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//RecordMemoryUsed(mSize.height * 4 + sizeof(gfxQuartzSurface));
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}
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/* static */ already_AddRefed<PrintTargetCG>
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PrintTargetCG::CreateOrNull(const IntSize& aSize, gfxImageFormat aFormat)
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{
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if (!Factory::CheckSurfaceSize(aSize)) {
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return nullptr;
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}
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unsigned int width = static_cast<unsigned int>(aSize.width);
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unsigned int height = static_cast<unsigned int>(aSize.height);
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cairo_format_t cformat = GfxFormatToCairoFormat(aFormat);
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cairo_surface_t* surface =
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cairo_quartz_surface_create(cformat, width, height);
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if (cairo_surface_status(surface)) {
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return nullptr;
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}
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// The new object takes ownership of our surface reference.
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RefPtr<PrintTargetCG> target = new PrintTargetCG(surface, aSize);
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return target.forget();
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}
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/* static */ already_AddRefed<PrintTargetCG>
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PrintTargetCG::CreateOrNull(CGContextRef aContext, const IntSize& aSize)
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{
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if (!Factory::CheckSurfaceSize(aSize)) {
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return nullptr;
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}
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unsigned int width = static_cast<unsigned int>(aSize.width);
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unsigned int height = static_cast<unsigned int>(aSize.height);
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cairo_surface_t* surface =
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cairo_quartz_surface_create_for_cg_context(aContext, width, height);
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if (cairo_surface_status(surface)) {
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return nullptr;
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}
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// The new object takes ownership of our surface reference.
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RefPtr<PrintTargetCG> target = new PrintTargetCG(surface, aSize);
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return target.forget();
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}
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static size_t
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PutBytesNull(void* info, const void* buffer, size_t count)
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{
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return count;
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}
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already_AddRefed<DrawTarget>
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PrintTargetCG::GetReferenceDrawTarget(DrawEventRecorder* aRecorder)
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{
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if (!mRefDT) {
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const IntSize size(1, 1);
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CGDataConsumerCallbacks callbacks = {PutBytesNull, nullptr};
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CGDataConsumerRef consumer = CGDataConsumerCreate(nullptr, &callbacks);
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CGContextRef pdfContext = CGPDFContextCreate(consumer, nullptr, nullptr);
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CGDataConsumerRelease(consumer);
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cairo_surface_t* similar =
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cairo_quartz_surface_create_for_cg_context(
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pdfContext, size.width, size.height);
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CGContextRelease(pdfContext);
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if (cairo_surface_status(similar)) {
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return nullptr;
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}
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RefPtr<DrawTarget> dt =
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Factory::CreateDrawTargetForCairoSurface(similar, size);
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// The DT addrefs the surface, so we need drop our own reference to it:
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cairo_surface_destroy(similar);
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if (!dt || !dt->IsValid()) {
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return nullptr;
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}
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if (aRecorder) {
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dt = CreateRecordingDrawTarget(aRecorder, dt);
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if (!dt || !dt->IsValid()) {
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return nullptr;
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}
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}
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mRefDT = dt.forget();
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}
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return do_AddRef(mRefDT);
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}
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} // namespace gfx
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} // namespace mozilla
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