layout/forms/nsMeterFrame.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 nsMeterFrame_h___
   8 #define nsMeterFrame_h___
   9
  10 #include "mozilla/Attributes.h"
  11 #include "nsContainerFrame.h"
  12 #include "nsIAnonymousContentCreator.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsCSSPseudoElements.h"
  15
  16 class nsMeterFrame final : public nsContainerFrame,
  17                            public nsIAnonymousContentCreator
  18
  19 {
  20   typedef mozilla::dom::Element Element;
  21
  22  public:
  23   NS_DECL_QUERYFRAME
  24   NS_DECL_FRAMEARENA_HELPERS(nsMeterFrame)
  25
  26   explicit nsMeterFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);
  27   virtual ~nsMeterFrame();
  28
  29   void Destroy(DestroyContext&) override;
  30
  31   virtual void Reflow(nsPresContext* aCX, ReflowOutput& aDesiredSize,
  32                       const ReflowInput& aReflowInput,
  33                       nsReflowStatus& aStatus) override;
  34
  35 #ifdef DEBUG_FRAME_DUMP
  36   virtual nsresult GetFrameName(nsAString& aResult) const override {
  37     return MakeFrameName(u"Meter"_ns, aResult);
  38   }
  39 #endif
  40
  41   // nsIAnonymousContentCreator
  42   virtual nsresult CreateAnonymousContent(
  43       nsTArray<ContentInfo>& aElements) override;
  44   virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
  45                                         uint32_t aFilter) override;
  46
  47   virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
  48                                     int32_t aModType) override;
  49
  50   virtual mozilla::LogicalSize ComputeAutoSize(
  51       gfxContext* aRenderingContext, mozilla::WritingMode aWM,
  52       const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
  53       const mozilla::LogicalSize& aMargin,
  54       const mozilla::LogicalSize& aBorderPadding,
  55       const mozilla::StyleSizeOverrides& aSizeOverrides,
  56       mozilla::ComputeSizeFlags aFlags) override;
  57
  58   virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
  59   virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
  60
  61   /**
  62    * Returns whether the frame and its child should use the native style.
  63    */
  64   bool ShouldUseNativeStyle() const;
  65
  66  protected:
  67   // Helper function which reflow the anonymous div frame.
  68   void ReflowBarFrame(nsIFrame* aBarFrame, nsPresContext* aPresContext,
  69                       const ReflowInput& aReflowInput, nsReflowStatus& aStatus);
  70   /**
  71    * The div used to show the meter bar.
  72    * @see nsMeterFrame::CreateAnonymousContent
  73    */
  74   nsCOMPtr<Element> mBarDiv;
  75 };
  76
  77 #endif