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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef GFX_UPDATEIMAGEHELPER_H
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#define GFX_UPDATEIMAGEHELPER_H
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#include "Layers.h"
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#include "mozilla/layers/ImageClient.h"
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#include "mozilla/layers/TextureClient.h"
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#include "mozilla/layers/TextureClientRecycleAllocator.h"
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#include "mozilla/layers/TextureWrapperImage.h"
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#include "mozilla/gfx/Types.h"
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namespace mozilla {
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namespace layers {
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class UpdateImageHelper {
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public:
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UpdateImageHelper(ImageContainer* aImageContainer, ImageClient* aImageClient,
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gfx::IntSize aImageSize, gfx::SurfaceFormat aFormat)
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: mImageContainer(aImageContainer),
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mImageClient(aImageClient),
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mImageSize(aImageSize),
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mIsLocked(false) {
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mTexture = mImageClient->GetTextureClientRecycler()->CreateOrRecycle(
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aFormat, mImageSize, BackendSelector::Content, TextureFlags::DEFAULT);
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if (!mTexture) {
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return;
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}
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mIsLocked = mTexture->Lock(OpenMode::OPEN_WRITE_ONLY);
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if (!mIsLocked) {
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return;
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}
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}
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~UpdateImageHelper() {
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if (mIsLocked) {
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mTexture->Unlock();
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mIsLocked = false;
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}
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}
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already_AddRefed<gfx::DrawTarget> GetDrawTarget() {
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RefPtr<gfx::DrawTarget> target;
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if (mTexture) {
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target = mTexture->BorrowDrawTarget();
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}
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return target.forget();
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}
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bool UpdateImage(wr::RenderRoot aRenderRoot) {
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if (!mTexture) {
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return false;
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}
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if (mIsLocked) {
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mTexture->Unlock();
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mIsLocked = false;
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}
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RefPtr<TextureWrapperImage> image = new TextureWrapperImage(
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mTexture, gfx::IntRect(gfx::IntPoint(0, 0), mImageSize));
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mImageContainer->SetCurrentImageInTransaction(image);
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return mImageClient->UpdateImage(mImageContainer, /* unused */ 0,
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Some(aRenderRoot));
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}
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private:
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RefPtr<ImageContainer> mImageContainer;
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RefPtr<ImageClient> mImageClient;
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gfx::IntSize mImageSize;
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RefPtr<TextureClient> mTexture;
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bool mIsLocked;
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};
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} // namespace layers
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} // namespace mozilla
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#endif // GFX_UPDATEIMAGEHELPER_H