1 // Copyright (c) 2012 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.
5 #ifndef UI_GFX_RENDER_TEXT_MAC_H_
6 #define UI_GFX_RENDER_TEXT_MAC_H_
8 #include <ApplicationServices/ApplicationServices.h>
13 #include "base/mac/scoped_cftyperef.h"
14 #include "ui/gfx/render_text.h"
18 // RenderTextMac is the Mac implementation of RenderText that uses CoreText for
19 // layout and Skia for drawing.
21 // Note: The current implementation only supports drawing and sizing the text,
22 // but not text selection or cursor movement.
23 class RenderTextMac : public RenderText {
26 ~RenderTextMac() override;
28 // Overridden from RenderText:
29 Size GetStringSize() override;
30 SizeF GetStringSizeF() override;
31 SelectionModel FindCursorPosition(const Point& point) override;
32 std::vector<FontSpan> GetFontSpansForTesting() override;
35 // Overridden from RenderText:
36 int GetLayoutTextBaseline() override;
37 SelectionModel AdjacentCharSelectionModel(
38 const SelectionModel& selection,
39 VisualCursorDirection direction) override;
40 SelectionModel AdjacentWordSelectionModel(
41 const SelectionModel& selection,
42 VisualCursorDirection direction) override;
43 Range GetGlyphBounds(size_t index) override;
44 std::vector<Rect> GetSubstringBounds(const Range& range) override;
45 size_t TextIndexToLayoutIndex(size_t index) const override;
46 size_t LayoutIndexToTextIndex(size_t index) const override;
47 bool IsValidCursorIndex(size_t index) override;
48 void ResetLayout() override;
49 void EnsureLayout() override;
50 void DrawVisualText(Canvas* canvas) override;
56 std::vector<uint16> glyphs;
57 std::vector<SkPoint> glyph_positions;
59 std::string font_name;
71 // Applies RenderText styles to |attr_string| with the given |ct_font|.
72 void ApplyStyles(CFMutableAttributedStringRef attr_string, CTFontRef ct_font);
74 // Updates |runs_| based on |line_| and sets |runs_valid_| to true.
77 // The Core Text line of text. Created by |EnsureLayout()|.
78 base::ScopedCFTypeRef<CTLineRef> line_;
80 // Array to hold CFAttributedString attributes that allows Core Text to hold
81 // weak references to them without leaking.
82 base::ScopedCFTypeRef<CFMutableArrayRef> attributes_;
84 // Visual dimensions of the text. Computed by |EnsureLayout()|.
87 // Common baseline for this line of text. Computed by |EnsureLayout()|.
88 SkScalar common_baseline_;
90 // Visual text runs. Only valid if |runs_valid_| is true. Computed by
92 std::vector<TextRun> runs_;
94 // Indicates that |runs_| are valid, set by |ComputeRuns()|.
97 DISALLOW_COPY_AND_ASSIGN(RenderTextMac);
102 #endif // UI_GFX_RENDER_TEXT_MAC_H_