OLD | NEW |
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_PLATFORM_FONT_H_ | 5 #ifndef UI_GFX_PLATFORM_FONT_H_ |
6 #define UI_GFX_PLATFORM_FONT_H_ | 6 #define UI_GFX_PLATFORM_FONT_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 #include "base/strings/string16.h" | 11 #include "base/strings/string16.h" |
12 #include "build/build_config.h" | 12 #include "build/build_config.h" |
| 13 #include "ui/gfx/font.h" |
13 #include "ui/gfx/gfx_export.h" | 14 #include "ui/gfx/gfx_export.h" |
14 #include "ui/gfx/native_widget_types.h" | 15 #include "ui/gfx/native_widget_types.h" |
15 | 16 |
16 namespace gfx { | 17 namespace gfx { |
17 | 18 |
18 class Font; | 19 class Font; |
19 struct FontRenderParams; | 20 struct FontRenderParams; |
20 | 21 |
21 class GFX_EXPORT PlatformFont : public base::RefCounted<PlatformFont> { | 22 class GFX_EXPORT PlatformFont : public base::RefCounted<PlatformFont> { |
22 public: | 23 public: |
23 // Creates an appropriate PlatformFont implementation. | 24 // Creates an appropriate PlatformFont implementation. |
24 static PlatformFont* CreateDefault(); | 25 static PlatformFont* CreateDefault(); |
25 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS) | 26 #if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_IOS) |
26 static PlatformFont* CreateFromNativeFont(NativeFont native_font); | 27 static PlatformFont* CreateFromNativeFont(NativeFont native_font); |
27 #endif | 28 #endif |
28 // Creates a PlatformFont implementation with the specified |font_name| | 29 // Creates a PlatformFont implementation with the specified |font_name| |
29 // (encoded in UTF-8) and |font_size| in pixels. | 30 // (encoded in UTF-8) and |font_size| in pixels. |
30 static PlatformFont* CreateFromNameAndSize(const std::string& font_name, | 31 static PlatformFont* CreateFromNameAndSize(const std::string& font_name, |
31 int font_size); | 32 int font_size); |
32 | 33 |
33 // Returns a new Font derived from the existing font. | 34 // Returns a new Font derived from the existing font. |
34 // |size_delta| is the size in pixels to add to the current font. | 35 // |size_delta| is the size in pixels to add to the current font. |
35 // The style parameter specifies the new style for the font, and is a | 36 // The style parameter specifies the new style for the font, and is a |
36 // bitmask of the values: BOLD, ITALIC and UNDERLINE. | 37 // bitmask of the values: ITALIC and UNDERLINE. |
37 virtual Font DeriveFont(int size_delta, int style) const = 0; | 38 // The weight parameter specifies the desired weight of the font. |
| 39 virtual Font DeriveFont(int size_delta, |
| 40 int style, |
| 41 gfx::Font::Weight weight) const = 0; |
38 | 42 |
39 // Returns the number of vertical pixels needed to display characters from | 43 // Returns the number of vertical pixels needed to display characters from |
40 // the specified font. This may include some leading, i.e. height may be | 44 // the specified font. This may include some leading, i.e. height may be |
41 // greater than just ascent + descent. Specifically, the Windows and Mac | 45 // greater than just ascent + descent. Specifically, the Windows and Mac |
42 // implementations include leading and the Linux one does not. This may | 46 // implementations include leading and the Linux one does not. This may |
43 // need to be revisited in the future. | 47 // need to be revisited in the future. |
44 virtual int GetHeight() = 0; | 48 virtual int GetHeight() = 0; |
45 | 49 |
| 50 // Returns the font weight. |
| 51 virtual gfx::Font::Weight GetWeight() const = 0; |
| 52 |
46 // Returns the baseline, or ascent, of the font. | 53 // Returns the baseline, or ascent, of the font. |
47 virtual int GetBaseline() = 0; | 54 virtual int GetBaseline() = 0; |
48 | 55 |
49 // Returns the cap height of the font. | 56 // Returns the cap height of the font. |
50 virtual int GetCapHeight() = 0; | 57 virtual int GetCapHeight() = 0; |
51 | 58 |
52 // Returns the expected number of horizontal pixels needed to display the | 59 // Returns the expected number of horizontal pixels needed to display the |
53 // specified length of characters. Call GetStringWidth() to retrieve the | 60 // specified length of characters. Call GetStringWidth() to retrieve the |
54 // actual number. | 61 // actual number. |
55 virtual int GetExpectedTextWidth(int length) = 0; | 62 virtual int GetExpectedTextWidth(int length) = 0; |
(...skipping 21 matching lines...) Expand all Loading... |
77 protected: | 84 protected: |
78 virtual ~PlatformFont() {} | 85 virtual ~PlatformFont() {} |
79 | 86 |
80 private: | 87 private: |
81 friend class base::RefCounted<PlatformFont>; | 88 friend class base::RefCounted<PlatformFont>; |
82 }; | 89 }; |
83 | 90 |
84 } // namespace gfx | 91 } // namespace gfx |
85 | 92 |
86 #endif // UI_GFX_PLATFORM_FONT_H_ | 93 #endif // UI_GFX_PLATFORM_FONT_H_ |
OLD | NEW |