The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/layers/ImageLayers.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,56 @@
     1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
     1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
     1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.8 +
     1.9 +#include "ImageLayers.h"
    1.10 +#include "ImageContainer.h"             // for ImageContainer
    1.11 +#include "gfxRect.h"                    // for gfxRect
    1.12 +#include "nsDebug.h"                    // for NS_ASSERTION
    1.13 +#include "nsISupportsImpl.h"            // for ImageContainer::Release, etc
    1.14 +#include "gfx2DGlue.h"
    1.15 +
    1.16 +namespace mozilla {
    1.17 +namespace layers {
    1.18 +
    1.19 +ImageLayer::ImageLayer(LayerManager* aManager, void* aImplData)
    1.20 +: Layer(aManager, aImplData), mFilter(GraphicsFilter::FILTER_GOOD)
    1.21 +, mScaleMode(ScaleMode::SCALE_NONE), mDisallowBigImage(false)
    1.22 +{}
    1.23 +
    1.24 +ImageLayer::~ImageLayer()
    1.25 +{}
    1.26 +
    1.27 +void ImageLayer::SetContainer(ImageContainer* aContainer) 
    1.28 +{
    1.29 +  mContainer = aContainer;
    1.30 +}
    1.31 +
    1.32 +void ImageLayer::ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
    1.33 +{
    1.34 +  gfx::Matrix4x4 local = GetLocalTransform();
    1.35 +
    1.36 +  // Snap image edges to pixel boundaries
    1.37 +  gfxRect sourceRect(0, 0, 0, 0);
    1.38 +  if (mContainer) {
    1.39 +    sourceRect.SizeTo(gfx::ThebesIntSize(mContainer->GetCurrentSize()));
    1.40 +    if (mScaleMode != ScaleMode::SCALE_NONE &&
    1.41 +        sourceRect.width != 0.0 && sourceRect.height != 0.0) {
    1.42 +      NS_ASSERTION(mScaleMode == ScaleMode::STRETCH,
    1.43 +                   "No other scalemodes than stretch and none supported yet.");
    1.44 +      local.Scale(mScaleToSize.width / sourceRect.width,
    1.45 +                  mScaleToSize.height / sourceRect.height, 1.0);
    1.46 +    }
    1.47 +  }
    1.48 +  // Snap our local transform first, and snap the inherited transform as well.
    1.49 +  // This makes our snapping equivalent to what would happen if our content
    1.50 +  // was drawn into a ThebesLayer (gfxContext would snap using the local
    1.51 +  // transform, then we'd snap again when compositing the ThebesLayer).
    1.52 +  mEffectiveTransform =
    1.53 +      SnapTransform(local, sourceRect, nullptr) *
    1.54 +      SnapTransformTranslation(aTransformToSurface, nullptr);
    1.55 +  ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
    1.56 +}
    1.57 +
    1.58 +}
    1.59 +}