michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GFX_IMAGELAYER_H
michael@0: #define GFX_IMAGELAYER_H
michael@0: 
michael@0: #include "Layers.h"                     // for Layer, etc
michael@0: #include "GraphicsFilter.h"             // for GraphicsFilter
michael@0: #include "mozilla/gfx/BaseSize.h"       // for BaseSize
michael@0: #include "mozilla/gfx/Point.h"          // for IntSize
michael@0: #include "mozilla/layers/LayersTypes.h"
michael@0: #include "nsAutoPtr.h"                  // for nsRefPtr
michael@0: #include "nscore.h"                     // for nsACString
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class ImageContainer;
michael@0: 
michael@0: /**
michael@0:  * A Layer which renders an Image.
michael@0:  */
michael@0: class ImageLayer : public Layer {
michael@0: public:
michael@0:   /**
michael@0:    * CONSTRUCTION PHASE ONLY
michael@0:    * Set the ImageContainer. aContainer must have the same layer manager
michael@0:    * as this layer.
michael@0:    */
michael@0:   virtual void SetContainer(ImageContainer* aContainer);
michael@0: 
michael@0:   /**
michael@0:    * CONSTRUCTION PHASE ONLY
michael@0:    * Set the filter used to resample this image if necessary.
michael@0:    */
michael@0:   void SetFilter(GraphicsFilter aFilter)
michael@0:   {
michael@0:     if (mFilter != aFilter) {
michael@0:       MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
michael@0:       mFilter = aFilter;
michael@0:       Mutated();
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   /**
michael@0:    * CONSTRUCTION PHASE ONLY
michael@0:    * Set the size to scale the image to and the mode at which to scale.
michael@0:    */
michael@0:   void SetScaleToSize(const gfx::IntSize &aSize, ScaleMode aMode)
michael@0:   {
michael@0:     if (mScaleToSize != aSize || mScaleMode != aMode) {
michael@0:       mScaleToSize = aSize;
michael@0:       mScaleMode = aMode;
michael@0:       Mutated();
michael@0:     }
michael@0:   }
michael@0: 
michael@0: 
michael@0:   ImageContainer* GetContainer() { return mContainer; }
michael@0:   GraphicsFilter GetFilter() { return mFilter; }
michael@0:   const gfx::IntSize& GetScaleToSize() { return mScaleToSize; }
michael@0:   ScaleMode GetScaleMode() { return mScaleMode; }
michael@0: 
michael@0:   MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE)
michael@0: 
michael@0:   virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface);
michael@0: 
michael@0:   /**
michael@0:    * if true, the image will only be backed by a single tile texture
michael@0:    */
michael@0:   void SetDisallowBigImage(bool aDisallowBigImage)
michael@0:   {
michael@0:     if (mDisallowBigImage != aDisallowBigImage) {
michael@0:       MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) DisallowBigImage", this));
michael@0:       mDisallowBigImage = aDisallowBigImage;
michael@0:       Mutated();
michael@0:     }
michael@0:   }
michael@0: 
michael@0: protected:
michael@0:   ImageLayer(LayerManager* aManager, void* aImplData);
michael@0:   ~ImageLayer();
michael@0:   virtual nsACString& PrintInfo(nsACString& aTo, const char* aPrefix);
michael@0: 
michael@0: 
michael@0:   nsRefPtr<ImageContainer> mContainer;
michael@0:   GraphicsFilter mFilter;
michael@0:   gfx::IntSize mScaleToSize;
michael@0:   ScaleMode mScaleMode;
michael@0:   bool mDisallowBigImage;
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif /* GFX_IMAGELAYER_H */