forked from mirrors/gecko-dev
123 lines
4 KiB
C++
123 lines
4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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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 "WindowSurfaceX11Image.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Tools.h"
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#include "mozilla/gfx/gfxVars.h"
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#include "gfxPlatform.h"
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#include "gfx2DGlue.h"
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namespace mozilla {
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namespace widget {
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WindowSurfaceX11Image::WindowSurfaceX11Image(Display* aDisplay,
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Window aWindow,
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Visual* aVisual,
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unsigned int aDepth)
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: WindowSurfaceX11(aDisplay, aWindow, aVisual, aDepth)
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{
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}
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WindowSurfaceX11Image::~WindowSurfaceX11Image()
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{
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}
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already_AddRefed<gfx::DrawTarget>
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WindowSurfaceX11Image::Lock(const LayoutDeviceIntRegion& aRegion)
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{
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gfx::IntRect bounds = aRegion.GetBounds().ToUnknownRect();
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gfx::IntSize size(bounds.XMost(), bounds.YMost());
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if (!mWindowSurface || mWindowSurface->CairoStatus() ||
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!(size <= mWindowSurface->GetSize())) {
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mWindowSurface = new gfxXlibSurface(mDisplay, mWindow, mVisual, size);
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}
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if (mWindowSurface->CairoStatus()) {
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return nullptr;
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}
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if (!mImageSurface || mImageSurface->CairoStatus() ||
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!(size <= mImageSurface->GetSize())) {
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gfxImageFormat format = SurfaceFormatToImageFormat(mFormat);
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if (format == gfx::SurfaceFormat::UNKNOWN) {
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format = mDepth == 32 ?
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gfx::SurfaceFormat::A8R8G8B8_UINT32 :
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gfx::SurfaceFormat::X8R8G8B8_UINT32;
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}
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mImageSurface = new gfxImageSurface(size, format);
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if (mImageSurface->CairoStatus()) {
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return nullptr;
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}
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}
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gfxImageFormat format = mImageSurface->Format();
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// Cairo prefers compositing to BGRX instead of BGRA where possible.
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// Cairo/pixman lacks some fast paths for compositing BGRX onto BGRA, so
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// just report it as BGRX directly in that case.
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// Otherwise, for Skia, report it as BGRA to the compositor. The alpha
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// channel will be discarded when we put the image.
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if (format == gfx::SurfaceFormat::X8R8G8B8_UINT32) {
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gfx::BackendType backend = gfxVars::ContentBackend();
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if (!gfx::Factory::DoesBackendSupportDataDrawtarget(backend)) {
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#ifdef USE_SKIA
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backend = gfx::BackendType::SKIA;
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#else
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backend = gfx::BackendType::CAIRO;
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#endif
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}
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if (backend != gfx::BackendType::CAIRO) {
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format = gfx::SurfaceFormat::A8R8G8B8_UINT32;
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}
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}
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return gfxPlatform::CreateDrawTargetForData(mImageSurface->Data(),
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mImageSurface->GetSize(),
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mImageSurface->Stride(),
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ImageFormatToSurfaceFormat(format));
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}
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void
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WindowSurfaceX11Image::Commit(const LayoutDeviceIntRegion& aInvalidRegion)
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{
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RefPtr<gfx::DrawTarget> dt =
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gfx::Factory::CreateDrawTargetForCairoSurface(mWindowSurface->CairoSurface(),
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mWindowSurface->GetSize());
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RefPtr<gfx::SourceSurface> surf =
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gfx::Factory::CreateSourceSurfaceForCairoSurface(mImageSurface->CairoSurface(),
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mImageSurface->GetSize(),
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mImageSurface->Format());
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if (!dt || !surf) {
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return;
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}
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gfx::IntRect bounds = aInvalidRegion.GetBounds().ToUnknownRect();
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gfx::Rect rect(bounds);
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if (rect.IsEmpty()) {
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return;
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}
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uint32_t numRects = aInvalidRegion.GetNumRects();
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if (numRects != 1) {
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AutoTArray<IntRect, 32> rects;
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rects.SetCapacity(numRects);
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for (auto iter = aInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {
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rects.AppendElement(iter.Get().ToUnknownRect());
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}
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dt->PushDeviceSpaceClipRects(rects.Elements(), rects.Length());
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}
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dt->DrawSurface(surf, rect, rect);
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if (numRects != 1) {
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dt->PopClip();
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}
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}
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} // namespace widget
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} // namespace mozilla
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