third_party/WebKit/Source/core/layout/LayoutHTMLCanvas.h

   1 /*
   2  * Copyright (C) 2004, 2006, 2007, 2009 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef LayoutHTMLCanvas_h
  27 #define LayoutHTMLCanvas_h
  28
  29 #include "core/layout/LayoutReplaced.h"
  30
  31 namespace blink {
  32
  33 class HTMLCanvasElement;
  34
  35 class LayoutHTMLCanvas final : public LayoutReplaced {
  36 public:
  37     explicit LayoutHTMLCanvas(HTMLCanvasElement*);
  38
  39     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectCanvas || LayoutReplaced::isOfType(type); }
  40     DeprecatedPaintLayerType layerTypeRequired() const override;
  41     PaintInvalidationReason invalidatePaintIfNeeded(PaintInvalidationState&, const LayoutBoxModelObject&) final;
  42
  43     void canvasSizeChanged();
  44
  45     void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
  46
  47     const char* name() const override { return "LayoutHTMLCanvas"; }
  48
  49 private:
  50     void paintReplaced(const PaintInfo&, const LayoutPoint&) override;
  51     void intrinsicSizeChanged() override { canvasSizeChanged(); }
  52
  53     CompositingReasons additionalCompositingReasons() const override;
  54 };
  55
  56 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutHTMLCanvas, isCanvas());
  57
  58 } // namespace blink
  59
  60 #endif // LayoutHTMLCanvas_h