Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2             :  *
       3             :  * This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "WindowSurfaceXRender.h"
       8             : 
       9             : #include "mozilla/gfx/2D.h"
      10             : #include "mozilla/gfx/Types.h"
      11             : #include "gfxPlatform.h"
      12             : 
      13             : namespace mozilla {
      14             : namespace widget {
      15             : 
      16           0 : WindowSurfaceXRender::WindowSurfaceXRender(Display* aDisplay,
      17             :                                            Window aWindow,
      18             :                                            Visual* aVisual,
      19           0 :                                            unsigned int aDepth)
      20             :   : WindowSurfaceX11(aDisplay, aWindow, aVisual, aDepth)
      21             :   , mXlibSurface(nullptr)
      22           0 :   , mGC(X11None)
      23             : {
      24           0 : }
      25             : 
      26           0 : WindowSurfaceXRender::~WindowSurfaceXRender()
      27             : {
      28           0 :   if (mGC != X11None) {
      29           0 :     XFreeGC(mDisplay, mGC);
      30             :   }
      31           0 : }
      32             : 
      33             : already_AddRefed<gfx::DrawTarget>
      34           0 : WindowSurfaceXRender::Lock(const LayoutDeviceIntRegion& aRegion)
      35             : {
      36           0 :   gfx::IntRect bounds = aRegion.GetBounds().ToUnknownRect();
      37           0 :   gfx::IntSize size(bounds.XMost(), bounds.YMost());
      38           0 :   if (!mXlibSurface || mXlibSurface->CairoStatus() ||
      39           0 :       !(size <= mXlibSurface->GetSize())) {
      40           0 :     mXlibSurface = gfxXlibSurface::Create(DefaultScreenOfDisplay(mDisplay),
      41           0 :                                           mVisual,
      42             :                                           size,
      43           0 :                                           mWindow);
      44             :   }
      45           0 :   if (!mXlibSurface || mXlibSurface->CairoStatus()) {
      46           0 :     return nullptr;
      47             :   }
      48             : 
      49           0 :   return gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(mXlibSurface, size);
      50             : }
      51             : 
      52             : void
      53           0 : WindowSurfaceXRender::Commit(const LayoutDeviceIntRegion& aInvalidRegion)
      54             : {
      55           0 :   AutoTArray<XRectangle, 32> xrects;
      56           0 :   xrects.SetCapacity(aInvalidRegion.GetNumRects());
      57             : 
      58           0 :   for (auto iter = aInvalidRegion.RectIter(); !iter.Done(); iter.Next()) {
      59           0 :     const LayoutDeviceIntRect &r = iter.Get();
      60           0 :     XRectangle xrect = { (short)r.x, (short)r.y, (unsigned short)r.width, (unsigned short)r.height };
      61           0 :     xrects.AppendElement(xrect);
      62             :   }
      63             : 
      64           0 :   if (!mGC) {
      65           0 :     mGC = XCreateGC(mDisplay, mWindow, 0, nullptr);
      66           0 :     if (!mGC) {
      67           0 :       NS_WARNING("Couldn't create X11 graphics context for window!");
      68           0 :       return;
      69             :     }
      70             :   }
      71             : 
      72           0 :   XSetClipRectangles(mDisplay, mGC, 0, 0, xrects.Elements(), xrects.Length(), YXBanded);
      73             : 
      74           0 :   MOZ_ASSERT(mXlibSurface && mXlibSurface->CairoStatus() == 0,
      75             :              "Attempted to commit invalid surface!");
      76           0 :   gfx::IntRect bounds = aInvalidRegion.GetBounds().ToUnknownRect();
      77           0 :   gfx::IntSize size(bounds.XMost(), bounds.YMost());
      78           0 :   XCopyArea(mDisplay, mXlibSurface->XDrawable(), mWindow, mGC, bounds.x, bounds.y,
      79           0 :             size.width, size.height, bounds.x, bounds.y);
      80             : }
      81             : 
      82             : }  // namespace widget
      83             : }  // namespace mozilla