mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 13:21:05 +00:00
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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/. */
|
|
|
|
#ifndef GFX_UPDATEIMAGEHELPER_H
|
|
#define GFX_UPDATEIMAGEHELPER_H
|
|
|
|
#include "mozilla/layers/CompositorTypes.h"
|
|
#include "mozilla/layers/ImageClient.h"
|
|
#include "mozilla/layers/TextureClient.h"
|
|
#include "mozilla/layers/TextureClientRecycleAllocator.h"
|
|
#include "mozilla/layers/TextureWrapperImage.h"
|
|
#include "mozilla/gfx/Types.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
class UpdateImageHelper {
|
|
public:
|
|
UpdateImageHelper(ImageContainer* aImageContainer, ImageClient* aImageClient,
|
|
gfx::IntSize aImageSize, gfx::SurfaceFormat aFormat)
|
|
: mImageContainer(aImageContainer),
|
|
mImageClient(aImageClient),
|
|
mImageSize(aImageSize),
|
|
mIsLocked(false) {
|
|
mTexture = mImageClient->GetTextureClientRecycler()->CreateOrRecycle(
|
|
aFormat, mImageSize, BackendSelector::Content, TextureFlags::DEFAULT);
|
|
if (!mTexture) {
|
|
return;
|
|
}
|
|
|
|
mIsLocked = mTexture->Lock(OpenMode::OPEN_WRITE_ONLY);
|
|
if (!mIsLocked) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
~UpdateImageHelper() {
|
|
if (mIsLocked) {
|
|
mTexture->Unlock();
|
|
mIsLocked = false;
|
|
}
|
|
}
|
|
|
|
already_AddRefed<gfx::DrawTarget> GetDrawTarget() {
|
|
RefPtr<gfx::DrawTarget> target;
|
|
if (mTexture) {
|
|
target = mTexture->BorrowDrawTarget();
|
|
}
|
|
return target.forget();
|
|
}
|
|
|
|
bool UpdateImage() {
|
|
if (!mTexture) {
|
|
return false;
|
|
}
|
|
|
|
if (mIsLocked) {
|
|
mTexture->Unlock();
|
|
mIsLocked = false;
|
|
}
|
|
|
|
RefPtr<TextureWrapperImage> image = new TextureWrapperImage(
|
|
mTexture, gfx::IntRect(gfx::IntPoint(0, 0), mImageSize));
|
|
mImageContainer->SetCurrentImageInTransaction(image);
|
|
return mImageClient->UpdateImage(mImageContainer, /* unused */ 0);
|
|
}
|
|
|
|
private:
|
|
RefPtr<ImageContainer> mImageContainer;
|
|
RefPtr<ImageClient> mImageClient;
|
|
gfx::IntSize mImageSize;
|
|
RefPtr<TextureClient> mTexture;
|
|
bool mIsLocked;
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#endif // GFX_UPDATEIMAGEHELPER_H
|