third_party/WebKit/Source/core/paint/InlineTextBoxPainter.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef InlineTextBoxPainter_h
   6 #define InlineTextBoxPainter_h
   7
   8 #include "core/style/ComputedStyleConstants.h"
   9 #include "platform/geometry/LayoutRect.h"
  10 #include "wtf/Allocator.h"
  11
  12 namespace blink {
  13
  14 struct CompositionUnderline;
  15 struct PaintInfo;
  16
  17 class Color;
  18 class ComputedStyle;
  19 class DocumentMarker;
  20 class FloatPoint;
  21 class FloatRect;
  22 class Font;
  23 class GraphicsContext;
  24 class InlineTextBox;
  25 class LayoutPoint;
  26 class LayoutTextCombine;
  27
  28 class InlineTextBoxPainter {
  29     STACK_ALLOCATED();
  30 public:
  31     InlineTextBoxPainter(InlineTextBox& inlineTextBox) : m_inlineTextBox(inlineTextBox) { }
  32
  33     void paint(const PaintInfo&, const LayoutPoint&);
  34     void paintDocumentMarkers(GraphicsContext*, const LayoutPoint& boxOrigin, const ComputedStyle&, const Font&, bool background);
  35     void paintDocumentMarker(GraphicsContext*, const LayoutPoint& boxOrigin, DocumentMarker*, const ComputedStyle&, const Font&, bool grammar);
  36     void paintTextMatchMarker(GraphicsContext*, const LayoutPoint& boxOrigin, DocumentMarker*, const ComputedStyle&, const Font&);
  37
  38     static void removeFromTextBlobCache(InlineTextBox&);
  39
  40 private:
  41     enum class PaintOptions { Normal, CombinedText };
  42
  43     void paintCompositionBackgrounds(GraphicsContext*, const LayoutPoint& boxOrigin, const ComputedStyle&, const Font&, bool useCustomUnderlines);
  44     void paintSingleCompositionBackgroundRun(GraphicsContext*, const LayoutPoint& boxOrigin, const ComputedStyle&, const Font&, Color backgroundColor, int startPos, int endPos);
  45     template <PaintOptions>
  46     void paintSelection(GraphicsContext*, const LayoutRect& boxRect, const ComputedStyle&, const Font&, Color textColor, LayoutTextCombine* = nullptr);
  47     void paintDecoration(const PaintInfo&, const LayoutPoint& boxOrigin, TextDecoration);
  48     void paintCompositionUnderline(GraphicsContext*, const LayoutPoint& boxOrigin, const CompositionUnderline&);
  49     unsigned underlinePaintStart(const CompositionUnderline&);
  50     unsigned underlinePaintEnd(const CompositionUnderline&);
  51     bool shouldPaintTextBox(const PaintInfo&);
  52     void expandToIncludeNewlineForSelection(LayoutRect&);
  53
  54     InlineTextBox& m_inlineTextBox;
  55 };
  56
  57 } // namespace blink
  58
  59 #endif // InlineTextBoxPainter_h