layout/svg/SVGUseFrame.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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 #ifndef LAYOUT_SVG_SVGUSEFRAME_H_
   8 #define LAYOUT_SVG_SVGUSEFRAME_H_
   9
  10 // Keep in (case-insensitive) order:
  11 #include "SVGGFrame.h"
  12
  13 namespace mozilla {
  14 class PresShell;
  15 }  // namespace mozilla
  16
  17 nsIFrame* NS_NewSVGUseFrame(mozilla::PresShell* aPresShell,
  18                             mozilla::ComputedStyle* aStyle);
  19
  20 namespace mozilla {
  21
  22 class SVGUseFrame final : public SVGGFrame {
  23   friend nsIFrame* ::NS_NewSVGUseFrame(mozilla::PresShell* aPresShell,
  24                                        ComputedStyle* aStyle);
  25
  26  protected:
  27   explicit SVGUseFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
  28       : SVGGFrame(aStyle, aPresContext, kClassID), mHasValidDimensions(true) {}
  29
  30  public:
  31   NS_DECL_FRAMEARENA_HELPERS(SVGUseFrame)
  32
  33   // nsIFrame interface:
  34   void Init(nsIContent* aContent, nsContainerFrame* aParent,
  35             nsIFrame* aPrevInFlow) override;
  36
  37   // Called when the href attributes changed.
  38   void HrefChanged();
  39
  40   // Called when the width or height attributes changed.
  41   void DimensionAttributeChanged(bool aHadValidDimensions,
  42                                  bool aAttributeIsUsed);
  43
  44   nsresult AttributeChanged(int32_t aNamespaceID, nsAtom* aAttribute,
  45                             int32_t aModType) override;
  46   void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
  47
  48 #ifdef DEBUG_FRAME_DUMP
  49   nsresult GetFrameName(nsAString& aResult) const override {
  50     return MakeFrameName(u"SVGUse"_ns, aResult);
  51   }
  52 #endif
  53
  54   // ISVGDisplayableFrame interface:
  55   void ReflowSVG() override;
  56   void NotifySVGChanged(uint32_t aFlags) override;
  57
  58  private:
  59   bool mHasValidDimensions;
  60 };
  61
  62 }  // namespace mozilla
  63
  64 #endif  // LAYOUT_SVG_SVGUSEFRAME_H_