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1 // Copyright 2017 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 UI_VIEWS_STYLE_TYPOGRAPHY_PROVIDER_H_ | |
6 #define UI_VIEWS_STYLE_TYPOGRAPHY_PROVIDER_H_ | |
7 | |
8 #include "base/macros.h" | |
9 #include "third_party/skia/include/core/SkColor.h" | |
10 #include "ui/gfx/font.h" | |
11 #include "ui/views/views_export.h" | |
12 | |
13 namespace gfx { | |
14 class FontList; | |
15 } | |
16 | |
17 namespace views { | |
18 | |
19 // Provides fonts to use in toolkit-views UI. | |
20 class VIEWS_EXPORT TypographyProvider { | |
21 public: | |
22 // Gets the FontList for the given |context| and |style|. | |
23 virtual const gfx::FontList& GetFont(int context, int style) const = 0; | |
24 | |
25 // Gets the color for the given |context| and |style|. This may consult | |
26 // ui::NativeTheme. | |
27 virtual SkColor GetColor(int context, int style) const = 0; | |
28 | |
29 // Gets the line spacing, or 0 if it should be provided by gfx::FontList. | |
30 virtual int GetLineHeight(int context, int style) const = 0; | |
31 | |
32 virtual ~TypographyProvider() = default; | |
Peter Kasting
2017/03/17 02:26:01
Nit: Destructor before the other methods; see http
tapted
2017/03/17 10:33:11
Done.
| |
33 | |
34 protected: | |
35 TypographyProvider() = default; | |
36 | |
37 private: | |
38 DISALLOW_COPY_AND_ASSIGN(TypographyProvider); | |
39 }; | |
40 | |
41 // The default provider aims to provide values to match pre-Harmony constants | |
42 // for the given contexts so that old UI does not change. | |
43 class VIEWS_EXPORT DefaultTypographyProvider : public TypographyProvider { | |
44 public: | |
45 DefaultTypographyProvider() = default; | |
46 | |
47 const gfx::FontList& GetFont(int context, int style) const override; | |
48 SkColor GetColor(int context, int style) const override; | |
49 int GetLineHeight(int context, int style) const override; | |
50 | |
51 // Describes the font that the default GetFont() implementation uses. Always | |
Peter Kasting
2017/03/17 02:26:01
Nit: Maybe "Describes" -> "Sets the |size_delta| a
tapted
2017/03/17 10:33:11
Done.
| |
52 // writes a value, even for styles it doesn't know about. | |
Peter Kasting
2017/03/17 02:26:01
Nit: "writes a value" -> "sets values"?
tapted
2017/03/17 10:33:11
Done.
| |
53 void GetDefaultFont(int context, | |
54 int style, | |
55 int* size_delta, | |
56 gfx::Font::Weight* font_weight) const; | |
57 | |
58 private: | |
59 DISALLOW_COPY_AND_ASSIGN(DefaultTypographyProvider); | |
60 }; | |
61 | |
62 } // namespace views | |
63 | |
64 #endif // UI_VIEWS_STYLE_TYPOGRAPHY_PROVIDER_H_ | |
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