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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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 GFX_PLATFORM_FONT_ | 5 #ifndef GFX_PLATFORM_FONT_ |
| 6 #define GFX_PLATFORM_FONT_ | 6 #define GFX_PLATFORM_FONT_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <string> | 9 #include "ui/gfx/platform_font.h" |
| 10 | 10 // TODO(sail): remove this file once all includes have been updated. |
| 11 #include "base/ref_counted.h" | |
| 12 #include "base/string16.h" | |
| 13 #include "gfx/native_widget_types.h" | |
| 14 | |
| 15 namespace gfx { | |
| 16 | |
| 17 class Font; | |
| 18 | |
| 19 class PlatformFont : public base::RefCounted<PlatformFont> { | |
| 20 public: | |
| 21 // Create an appropriate PlatformFont implementation. | |
| 22 static PlatformFont* CreateDefault(); | |
| 23 static PlatformFont* CreateFromFont(const Font& other); | |
| 24 static PlatformFont* CreateFromNativeFont(NativeFont native_font); | |
| 25 static PlatformFont* CreateFromNameAndSize(const string16& font_name, | |
| 26 int font_size); | |
| 27 | |
| 28 // Returns a new Font derived from the existing font. | |
| 29 // size_delta is the size to add to the current font. See the single | |
| 30 // argument version of this method for an example. | |
| 31 // The style parameter specifies the new style for the font, and is a | |
| 32 // bitmask of the values: BOLD, ITALIC and UNDERLINED. | |
| 33 virtual Font DeriveFont(int size_delta, int style) const = 0; | |
| 34 | |
| 35 // Returns the number of vertical pixels needed to display characters from | |
| 36 // the specified font. This may include some leading, i.e. height may be | |
| 37 // greater than just ascent + descent. Specifically, the Windows and Mac | |
| 38 // implementations include leading and the Linux one does not. This may | |
| 39 // need to be revisited in the future. | |
| 40 virtual int GetHeight() const = 0; | |
| 41 | |
| 42 // Returns the baseline, or ascent, of the font. | |
| 43 virtual int GetBaseline() const = 0; | |
| 44 | |
| 45 // Returns the average character width for the font. | |
| 46 virtual int GetAverageCharacterWidth() const = 0; | |
| 47 | |
| 48 // Returns the number of horizontal pixels needed to display the specified | |
| 49 // string. | |
| 50 virtual int GetStringWidth(const string16& text) const = 0; | |
| 51 | |
| 52 // Returns the expected number of horizontal pixels needed to display the | |
| 53 // specified length of characters. Call GetStringWidth() to retrieve the | |
| 54 // actual number. | |
| 55 virtual int GetExpectedTextWidth(int length) const = 0; | |
| 56 | |
| 57 // Returns the style of the font. | |
| 58 virtual int GetStyle() const = 0; | |
| 59 | |
| 60 // Returns the font name. | |
| 61 virtual string16 GetFontName() const = 0; | |
| 62 | |
| 63 // Returns the font size in pixels. | |
| 64 virtual int GetFontSize() const = 0; | |
| 65 | |
| 66 // Returns the native font handle. | |
| 67 virtual NativeFont GetNativeFont() const = 0; | |
| 68 | |
| 69 protected: | |
| 70 virtual ~PlatformFont() {} | |
| 71 | |
| 72 private: | |
| 73 friend class base::RefCounted<PlatformFont>; | |
| 74 }; | |
| 75 | |
| 76 } // namespace gfx | |
| 77 | 11 |
| 78 #endif // GFX_PLATFORM_FONT_ | 12 #endif // GFX_PLATFORM_FONT_ |
| 79 | 13 |
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Chromium Code Reviews
Issue 6246027:
Move src/gfx/ to src/ui/gfx... (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/