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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_H_ | |
6 #define UI_VIEWS_STYLE_TYPOGRAPHY_H_ | |
7 | |
8 #include "third_party/skia/include/core/SkColor.h" | |
9 #include "ui/views/views_export.h" | |
10 | |
11 namespace gfx { | |
12 class FontList; | |
13 } | |
14 | |
15 namespace views { | |
16 namespace style { | |
17 | |
18 // Where a piece of text appears in the UI. This influences size and weight, but | |
19 // typically not style or color. | |
20 enum TextContext { | |
21 // Embedders can extend this enum with additional values that are understood | |
22 // by the TypographyProvider offered by their ViewsDelegate. Embedders define | |
23 // enum values from VIEWS_TEXT_CONTEXT_END. Values named beginning with | |
24 // "CONTEXT_" represent the actual TextContexts: the rest are markers. | |
25 VIEWS_TEXT_CONTEXT_START = 0, | |
26 | |
27 // A title for a dialog window. Usually 15pt. Multi-line OK. | |
28 CONTEXT_DIALOG_TITLE = VIEWS_TEXT_CONTEXT_START, | |
29 | |
30 // Text to label a control, usually next to it. "Body 2". Usually 12pt. | |
31 CONTEXT_LABEL, | |
32 | |
33 // An editable text field. Usually matches CONTROL_LABEL. | |
34 CONTEXT_TEXTFIELD, | |
35 | |
36 // Text that appears on a button control. Usually 12pt. | |
37 CONTEXT_BUTTON, | |
38 | |
39 // Embedders must start TextContext enum values from this value. | |
40 VIEWS_TEXT_CONTEXT_END, | |
41 | |
42 // All TextContext enum values must be below this value. | |
43 TEXT_CONTEXT_MAX = 0x1000 | |
44 }; | |
45 | |
46 // How a piece of text should be presented. This influences color and style, but | |
47 // typically not size. | |
48 enum TextStyle { | |
49 // TextStyle enum values must always be greater than any TextContext value. | |
50 // This allows the code to verify at runtime that arguments of the two types | |
51 // have not been swapped. | |
52 VIEWS_TEXT_STYLE_START = TEXT_CONTEXT_MAX, | |
53 | |
54 // Primary text: solid black, normal weight. Converts to DISABLED in some | |
55 // contexts (e.g. BUTTON_TEXT, FIELD). | |
56 STYLE_PRIMARY = VIEWS_TEXT_STYLE_START, | |
sky
2017/03/20 16:33:11
Did you consider STYLE_ENABLED? I like that better
Peter Kasting
2017/03/20 20:00:34
There is a "secondary"; it's over on the Chrome si
tapted
2017/03/20 22:31:42
There is that :). I also think ENABLED is too spec
| |
57 | |
58 // Disabled "greyed out" text. | |
59 STYLE_DISABLED, | |
60 | |
61 // The style used for links. Usually a solid shade of blue. | |
62 STYLE_LINK, | |
63 | |
64 // Active tab in a tabbed pane. | |
65 STYLE_TAB_ACTIVE, | |
66 | |
67 // Hovered tab in a tabbed pane. | |
68 STYLE_TAB_HOVERED, | |
69 | |
70 // Inactive tab in a tabbed pane. | |
71 STYLE_TAB_INACTIVE, | |
72 | |
73 // Embedders must start TextStyle enum values from here. | |
74 VIEWS_TEXT_STYLE_END | |
75 }; | |
76 | |
77 // Helpers to obtain font properties from the TypographyProvider given by the | |
78 // current ViewsDelegate. |context| can be an enum value from TextContext, or a | |
79 // value understood by the embedder's TypographyProvider. Similarly, | |
80 // |text_style| corresponds to TextStyle. | |
81 VIEWS_EXPORT const gfx::FontList& GetFont(int text_context, int text_style); | |
82 VIEWS_EXPORT SkColor GetColor(int text_context, int text_style); | |
83 VIEWS_EXPORT int GetLineHeight(int text_context, int text_style); | |
84 | |
85 } // namespace style | |
86 } // namespace views | |
87 | |
88 #endif // UI_VIEWS_STYLE_TYPOGRAPHY_H_ | |
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