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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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 "WindowSurfaceX11Image.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Tools.h"
#include "mozilla/gfx/gfxVars.h"
#include "gfxPlatform.h"
#include "gfx2DGlue.h"
namespace mozilla {
namespace widget {
WindowSurfaceX11Image::WindowSurfaceX11Image(Display* aDisplay,
Window aWindow,
Visual* aVisual,
unsigned int aDepth)
: WindowSurfaceX11(aDisplay, aWindow, aVisual, aDepth)
{
}
WindowSurfaceX11Image::~WindowSurfaceX11Image()
{
}
already_AddRefed<gfx::DrawTarget>
WindowSurfaceX11Image::Lock(const LayoutDeviceIntRegion& aRegion)
{
gfx::IntRect bounds = aRegion.GetBounds().ToUnknownRect();
gfx::IntSize size(bounds.XMost(), bounds.YMost());
if (!mWindowSurface || mWindowSurface->CairoStatus() ||
!(size <= mWindowSurface->GetSize())) {
mWindowSurface = new gfxXlibSurface(mDisplay, mWindow, mVisual, size);
}
if (mWindowSurface->CairoStatus()) {
return nullptr;
}
if (!mImageSurface || mImageSurface->CairoStatus() ||
!(size <= mImageSurface->GetSize())) {
gfxImageFormat format = SurfaceFormatToImageFormat(mFormat);
if (format == gfx::SurfaceFormat::UNKNOWN) {
format = mDepth == 32 ?
gfx::SurfaceFormat::A8R8G8B8_UINT32 :
gfx::SurfaceFormat::X8R8G8B8_UINT32;
}
mImageSurface = new gfxImageSurface(size, format);
if (mImageSurface->CairoStatus()) {
return nullptr;
}
}
gfxImageFormat format = mImageSurface->Format();
// Cairo prefers compositing to BGRX instead of BGRA where possible.
if (format == gfx::SurfaceFormat::X8R8G8B8_UINT32) {
gfx::BackendType backend = gfxVars::ContentBackend();
if (!gfx::Factory::DoesBackendSupportDataDrawtarget(backend)) {
#ifdef USE_SKIA
backend = gfx::BackendType::SKIA;
#else
backend = gfx::BackendType::CAIRO;
#endif
}
if (backend != gfx::BackendType::CAIRO) {
format = gfx::SurfaceFormat::A8R8G8B8_UINT32;
}
}
return gfxPlatform::CreateDrawTargetForData(mImageSurface->Data(),
mImageSurface->GetSize(),
mImageSurface->Stride(),
ImageFormatToSurfaceFormat(format));
}
void
WindowSurfaceX11Image::Commit(const LayoutDeviceIntRegion& aInvalidRegion)
{
RefPtr<gfx::DrawTarget> dt =
gfx::Factory::CreateDrawTargetForCairoSurface(mWindowSurface->CairoSurface(),
mWindowSurface->GetSize());
RefPtr<gfx::SourceSurface> surf =
gfx::Factory::CreateSourceSurfaceForCairoSurface(mImageSurface->CairoSurface(),
mImageSurface->GetSize(),
mImageSurface->Format());
if (!dt || !surf) {
return;
}
gfx::IntRect bounds = aInvalidRegion.GetBounds().ToUnknownRect();
gfx::Rect rect(0, 0, bounds.XMost(), bounds.YMost());
if (rect.IsEmpty()) {
return;
}
uint32_t numRects = aInvalidRegion.GetNumRects();
if (numRects != 1) {
AutoTArray<IntRect, 32> rects;
rects.SetCapacity(numRects);
for (auto iter = aInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {
rects.AppendElement(iter.Get().ToUnknownRect());
}
dt->PushDeviceSpaceClipRects(rects.Elements(), rects.Length());
}
dt->DrawSurface(surf, rect, rect);
if (numRects != 1) {
dt->PopClip();
}
}
} // namespace widget
} // namespace mozilla
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