зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.4 KiB
C++
78 строки
2.4 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 "gfxPlatform.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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, mImage(nullptr)
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{
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}
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WindowSurfaceX11Image::~WindowSurfaceX11Image()
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{
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if (mImage)
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XDestroyImage(mImage);
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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 (!mImage || mImage->width < size.width || mImage->height < size.height) {
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if (mImage)
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XDestroyImage(mImage);
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int stride = gfx::GetAlignedStride<16>(size.width, gfx::BytesPerPixel(mFormat));
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if (stride == 0) {
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return nullptr;
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}
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char* data = static_cast<char*>(malloc(stride * size.height));
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if (!data)
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return nullptr;
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mImage = XCreateImage(mDisplay, mVisual, mDepth, ZPixmap, 0,
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data, size.width, size.height,
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8 * gfx::BytesPerPixel(mFormat), stride);
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}
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if (!mImage)
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return nullptr;
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unsigned char* data = (unsigned char*) mImage->data;
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return gfxPlatform::CreateDrawTargetForData(data,
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size,
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mImage->bytes_per_line,
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mFormat);
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}
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void
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WindowSurfaceX11Image::CommitToDrawable(Drawable aDest, GC aGC,
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const LayoutDeviceIntRegion& aInvalidRegion)
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{
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MOZ_ASSERT(mImage, "Attempted to commit invalid surface!");
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gfx::IntRect bounds = aInvalidRegion.GetBounds().ToUnknownRect();
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gfx::IntSize size(bounds.XMost(), bounds.YMost());
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XPutImage(mDisplay, aDest, aGC, mImage, bounds.x, bounds.y,
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bounds.x, bounds.y, size.width, size.height);
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}
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} // namespace widget
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} // namespace mozilla
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