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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 CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ | 5 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ |
6 #define CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ | 6 #define CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ |
7 | 7 |
8 #include <windows.h> | 8 #include <windows.h> |
9 | 9 |
10 #include "base/macros.h" | 10 #include "base/macros.h" |
11 | 11 |
12 // Class that implements obtaining the X coordinate of the native minimize | 12 // Class that implements obtaining the X coordinate of the native minimize |
13 // button for the native frame on Windows. | 13 // button for the native frame on Windows. |
14 // This is a separate class because obtaining it is somewhat tricky and this | 14 // This is a separate class because obtaining it is somewhat tricky and this |
15 // code is shared between BrowserDesktopWindowTreeHostWin and BrowserFrameWin. | 15 // code is shared between BrowserDesktopWindowTreeHostWin and BrowserFrameWin. |
16 class MinimizeButtonMetrics { | 16 class MinimizeButtonMetrics { |
17 public: | 17 public: |
18 MinimizeButtonMetrics(); | 18 MinimizeButtonMetrics(); |
19 ~MinimizeButtonMetrics(); | 19 ~MinimizeButtonMetrics(); |
20 | 20 |
21 void Init(HWND hwnd); | 21 void Init(HWND hwnd); |
22 | 22 |
23 // Obtain the X offset of the native minimize button. Since Windows can lie | 23 // Obtain the X offset of the native minimize button. Since Windows can lie |
24 // to us if we call this at the wrong moment, this might come from a cached | 24 // to us if we call this at the wrong moment, this might come from a cached |
25 // value rather than read when called. | 25 // value rather than read when called. |
26 int GetMinimizeButtonOffsetX() const; | 26 int GetMinimizeButtonOffsetX() const; |
27 | 27 |
28 // Obtain the height of the native minimize button. | |
29 // As for GetMinimizeButtonOffsetX(), this might come from a cached value. | |
30 int GetMinimizeButtonHeight() const; | |
31 | |
28 // Must be called when hwnd_ is activated to update the minimize button | 32 // Must be called when hwnd_ is activated to update the minimize button |
29 // position cache. | 33 // position cache. |
30 void OnHWNDActivated(); | 34 void OnHWNDActivated(); |
31 | 35 |
32 private: | 36 private: |
33 // Gets the value for GetMinimizeButtonOffsetX(), caching if found. | 37 // Gets the value for GetMinimizeButtonOffsetX(), caching if found. |
34 int GetAndCacheMinimizeButtonOffsetX() const; | 38 int GetAndCacheMinimizeButtonOffsetX() const; |
35 | 39 |
36 int GetButtonBoundsPositionOffset(const RECT& button_bounds, | 40 int GetButtonBoundsPositionOffset(const RECT& button_bounds, |
37 const RECT& window_bounds) const; | 41 const RECT& window_bounds) const; |
38 | 42 |
39 int GetMinimizeButtonOffsetForWindow() const; | 43 int GetMinimizeButtonOffsetForWindow() const; |
40 | 44 |
41 HWND hwnd_; | 45 HWND hwnd_; |
42 | 46 |
43 // Cached offset of the minimize button. If RTL this is the location of the | 47 // Cached offset of the minimize button. If RTL this is the location of the |
44 // minimize button, if LTR this is the offset from the right edge of the | 48 // minimize button, if LTR this is the offset from the right edge of the |
45 // client area to the minimize button. | 49 // client area to the minimize button. |
46 mutable int cached_minimize_button_x_delta_; | 50 mutable int cached_minimize_button_x_delta_; |
47 | 51 |
48 // Static cache of |cached_minimize_button_x_delta_|. | 52 // Static cache of |cached_minimize_button_x_delta_|. |
49 static int last_cached_minimize_button_x_delta_; | 53 static int last_cached_minimize_button_x_delta_; |
50 | 54 |
51 // Static cache of offset value representing the different between | 55 // Static cache of offset value representing the difference between |
52 // DWMWA_CAPTION_BUTTON_BOUNDS and WM_GETTITLEBARINFOEX | 56 // DWMWA_CAPTION_BUTTON_BOUNDS and WM_GETTITLEBARINFOEX |
53 static int button_bounds_position_offset_; | 57 static int button_bounds_position_offset_; |
54 | 58 |
59 // Static cache of Windows caption button height | |
Peter Kasting
2017/04/24 23:00:17
Nit: Trailing period.
emx
2017/04/25 11:57:40
Done.
| |
60 static int button_bounds_height_; | |
Peter Kasting
2017/04/24 23:00:17
Nit: Name |caption_button_height_|?
emx
2017/04/25 11:57:40
Done.
| |
61 | |
55 // Has OnHWNDActivated() been invoked? | 62 // Has OnHWNDActivated() been invoked? |
56 bool was_activated_; | 63 bool was_activated_; |
57 | 64 |
58 DISALLOW_COPY_AND_ASSIGN(MinimizeButtonMetrics); | 65 DISALLOW_COPY_AND_ASSIGN(MinimizeButtonMetrics); |
59 }; | 66 }; |
60 | 67 |
61 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ | 68 #endif // CHROME_BROWSER_UI_VIEWS_FRAME_MINIMIZE_BUTTON_METRICS_WIN_H_ |
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