зеркало из https://github.com/mozilla/gecko-dev.git
87 строки
2.8 KiB
C++
87 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "gfxQuartzNativeDrawing.h"
|
|
#include "gfxPlatform.h"
|
|
#include "mozilla/gfx/Helpers.h"
|
|
|
|
using namespace mozilla::gfx;
|
|
using namespace mozilla;
|
|
|
|
gfxQuartzNativeDrawing::gfxQuartzNativeDrawing(DrawTarget& aDrawTarget,
|
|
const Rect& nativeRect)
|
|
: mDrawTarget(&aDrawTarget), mNativeRect(nativeRect), mCGContext(nullptr) {}
|
|
|
|
CGContextRef gfxQuartzNativeDrawing::BeginNativeDrawing() {
|
|
NS_ASSERTION(!mCGContext,
|
|
"BeginNativeDrawing called when drawing already in progress");
|
|
|
|
DrawTarget* dt = mDrawTarget;
|
|
if (dt->IsTiledDrawTarget() || dt->GetBackendType() != BackendType::SKIA ||
|
|
dt->IsRecording()) {
|
|
// We need a DrawTarget that we can get a CGContextRef from:
|
|
Matrix transform = dt->GetTransform();
|
|
|
|
mNativeRect = transform.TransformBounds(mNativeRect);
|
|
mNativeRect.RoundOut();
|
|
if (mNativeRect.IsEmpty()) {
|
|
return nullptr;
|
|
}
|
|
|
|
mTempDrawTarget = Factory::CreateDrawTarget(
|
|
BackendType::SKIA,
|
|
IntSize::Truncate(mNativeRect.width, mNativeRect.height),
|
|
SurfaceFormat::B8G8R8A8);
|
|
if (!mTempDrawTarget) {
|
|
return nullptr;
|
|
}
|
|
|
|
transform.PostTranslate(-mNativeRect.x, -mNativeRect.y);
|
|
mTempDrawTarget->SetTransform(transform);
|
|
|
|
dt = mTempDrawTarget;
|
|
} else {
|
|
// Clip the DT in case BorrowedCGContext needs to create a new layer.
|
|
// This prevents it from creating a new layer the size of the window.
|
|
// But make sure that this clip is device pixel aligned.
|
|
Matrix transform = dt->GetTransform();
|
|
|
|
Rect deviceRect = transform.TransformBounds(mNativeRect);
|
|
deviceRect.RoundOut();
|
|
mNativeRect = transform.Inverse().TransformBounds(deviceRect);
|
|
mDrawTarget->PushClipRect(mNativeRect);
|
|
}
|
|
|
|
MOZ_ASSERT(dt->GetBackendType() == BackendType::SKIA);
|
|
mCGContext = mBorrowedContext.Init(dt);
|
|
|
|
if (NS_WARN_IF(!mCGContext)) {
|
|
// Failed borrowing CG context, so we need to clean up.
|
|
if (!mTempDrawTarget) {
|
|
mDrawTarget->PopClip();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
return mCGContext;
|
|
}
|
|
|
|
void gfxQuartzNativeDrawing::EndNativeDrawing() {
|
|
NS_ASSERTION(mCGContext,
|
|
"EndNativeDrawing called without BeginNativeDrawing");
|
|
|
|
mBorrowedContext.Finish();
|
|
if (mTempDrawTarget) {
|
|
RefPtr<SourceSurface> source = mTempDrawTarget->Snapshot();
|
|
|
|
AutoRestoreTransform autoRestore(mDrawTarget);
|
|
mDrawTarget->SetTransform(Matrix());
|
|
mDrawTarget->DrawSurface(source, mNativeRect,
|
|
Rect(0, 0, mNativeRect.width, mNativeRect.height));
|
|
} else {
|
|
mDrawTarget->PopClip();
|
|
}
|
|
}
|