layout/forms/nsButtonFrameRenderer.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 nsButtonFrameRenderer_h___
   8 #define nsButtonFrameRenderer_h___
   9
  10 #include "nsMargin.h"
  11 #include "nsCSSRenderingBorders.h"
  12
  13 class gfxContext;
  14 class nsIFrame;
  15 class nsPresContext;
  16 struct nsRect;
  17
  18 namespace mozilla {
  19 class nsDisplayList;
  20 class nsDisplayListBuilder;
  21 }  // namespace mozilla
  22
  23 #define NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX 0
  24 #define NS_BUTTON_RENDERER_LAST_CONTEXT_INDEX \
  25   NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX
  26
  27 class nsButtonFrameRenderer {
  28   using nsDisplayList = mozilla::nsDisplayList;
  29   using nsDisplayListBuilder = mozilla::nsDisplayListBuilder;
  30
  31   typedef mozilla::image::ImgDrawResult ImgDrawResult;
  32   typedef mozilla::ComputedStyle ComputedStyle;
  33
  34  public:
  35   nsButtonFrameRenderer();
  36   ~nsButtonFrameRenderer();
  37
  38   /**
  39    * Create display list items for the button
  40    */
  41   nsresult DisplayButton(nsDisplayListBuilder* aBuilder,
  42                          nsDisplayList* aBackground,
  43                          nsDisplayList* aForeground);
  44
  45   ImgDrawResult PaintInnerFocusBorder(nsDisplayListBuilder* aBuilder,
  46                                       nsPresContext* aPresContext,
  47                                       gfxContext& aRenderingContext,
  48                                       const nsRect& aDirtyRect,
  49                                       const nsRect& aRect);
  50
  51   mozilla::Maybe<nsCSSBorderRenderer> CreateInnerFocusBorderRenderer(
  52       nsDisplayListBuilder* aBuilder, nsPresContext* aPresContext,
  53       gfxContext* aRenderingContext, const nsRect& aDirtyRect,
  54       const nsRect& aRect, bool* aBorderIsEmpty);
  55
  56   ImgDrawResult PaintBorder(nsDisplayListBuilder* aBuilder,
  57                             nsPresContext* aPresContext,
  58                             gfxContext& aRenderingContext,
  59                             const nsRect& aDirtyRect, const nsRect& aRect);
  60
  61   void SetFrame(nsIFrame* aFrame, nsPresContext* aPresContext);
  62
  63   void SetDisabled(bool aDisabled, bool notify);
  64
  65   bool isActive();
  66   bool isDisabled();
  67
  68   void GetButtonInnerFocusRect(const nsRect& aRect, nsRect& aResult);
  69
  70   ComputedStyle* GetComputedStyle(int32_t aIndex) const;
  71   void SetComputedStyle(int32_t aIndex, ComputedStyle* aComputedStyle);
  72   void ReResolveStyles(nsPresContext* aPresContext);
  73
  74   nsIFrame* GetFrame();
  75
  76  private:
  77   // cached style for optional inner focus outline (used on Windows).
  78   RefPtr<ComputedStyle> mInnerFocusStyle;
  79
  80   nsIFrame* mFrame;
  81 };
  82
  83 #endif