| /* |
| * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc. All rights reserved. |
| * Copyright (C) 2007 Alp Toker <alp@atoker.com> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CANVAS_CANVAS_IMAGE_SOURCE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_CANVAS_CANVAS_IMAGE_SOURCE_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/platform/geometry/float_size.h" |
| #include "third_party/blink/renderer/platform/graphics/graphics_types.h" |
| #include "third_party/blink/renderer/platform/graphics/image_orientation.h" |
| #include "third_party/blink/renderer/platform/weborigin/kurl.h" |
| |
| namespace blink { |
| |
| class Image; |
| |
| enum SourceImageStatus { |
| kNormalSourceImageStatus, |
| kUndecodableSourceImageStatus, // Image element with a 'broken' image |
| kZeroSizeCanvasSourceImageStatus, // Source is a canvas with width or heigh |
| // of zero |
| kIncompleteSourceImageStatus, // Image element with no source media |
| kInvalidSourceImageStatus, |
| }; |
| |
| class CORE_EXPORT CanvasImageSource { |
| public: |
| virtual scoped_refptr<Image> GetSourceImageForCanvas(SourceImageStatus*, |
| const FloatSize&) = 0; |
| |
| // IMPORTANT: Result must be independent of whether destinationContext is |
| // already tainted because this function may be used to determine whether |
| // a CanvasPattern is "origin clean", and that pattern may be used on |
| // another canvas, which may not be already tainted. |
| virtual bool WouldTaintOrigin() const = 0; |
| |
| virtual bool IsCSSImageValue() const { return false; } |
| virtual bool IsImageElement() const { return false; } |
| virtual bool IsVideoElement() const { return false; } |
| virtual bool IsCanvasElement() const { return false; } |
| virtual bool IsSVGSource() const { return false; } |
| virtual bool IsImageBitmap() const { return false; } |
| virtual bool IsOffscreenCanvas() const { return false; } |
| virtual bool IsVideoFrame() const { return false; } |
| |
| virtual FloatSize ElementSize(const FloatSize& default_object_size, |
| const RespectImageOrientationEnum) const = 0; |
| virtual FloatSize DefaultDestinationSize( |
| const FloatSize& default_object_size, |
| const RespectImageOrientationEnum respect_orientation) const { |
| return ElementSize(default_object_size, respect_orientation); |
| } |
| virtual const KURL& SourceURL() const { return BlankURL(); } |
| virtual bool IsOpaque() const { return false; } |
| virtual bool IsAccelerated() const = 0; |
| |
| protected: |
| virtual ~CanvasImageSource() = default; |
| }; |
| |
| } // namespace blink |
| |
| #endif |