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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 // Returns the height of the native caption buttons in DIPs. | 21 // Return the width/height of the native caption buttons in DIPs. |
Peter Kasting
2017/05/11 01:03:43
Nit: "Returns" was correct; see bit about "descrip
emx
2017/05/11 12:56:11
Oh, it was supposed to be plural to apply to both
| |
22 static int GetCaptionButtonWidthInDIPs(); | |
22 static int GetCaptionButtonHeightInDIPs(); | 23 static int GetCaptionButtonHeightInDIPs(); |
Peter Kasting
2017/05/11 01:03:43
Nit: Maybe
static gfx::Size GetCaptionButtonSiz
emx
2017/05/11 12:56:11
Good point, I'll use this if we ever figure out a
| |
23 | 24 |
24 void Init(HWND hwnd); | 25 void Init(HWND hwnd); |
25 | 26 |
26 // Obtain the X offset of the native minimize button. Since Windows can lie | 27 // Obtain the X offset of the native minimize button. Since Windows can lie |
27 // to us if we call this at the wrong moment, this might come from a cached | 28 // to us if we call this at the wrong moment, this might come from a cached |
28 // value rather than read when called. | 29 // value rather than read when called. |
29 int GetMinimizeButtonOffsetX() const; | 30 int GetMinimizeButtonOffsetX() const; |
30 | 31 |
31 // 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 |
32 // position cache. | 33 // position cache. |
33 void OnHWNDActivated(); | 34 void OnHWNDActivated(); |
34 | 35 |
35 private: | 36 private: |
37 static int GetCaptionButtonDimensionInDIPs(int caption_metric, | |
38 int frame_metric); | |
39 | |
36 // Gets the value for GetMinimizeButtonOffsetX(), caching if found. | 40 // Gets the value for GetMinimizeButtonOffsetX(), caching if found. |
37 int GetAndCacheMinimizeButtonOffsetX() const; | 41 int GetAndCacheMinimizeButtonOffsetX() const; |
38 | 42 |
39 int GetButtonBoundsPositionOffset(const RECT& button_bounds, | 43 int GetButtonBoundsPositionOffset(const RECT& button_bounds, |
40 const RECT& window_bounds) const; | 44 const RECT& window_bounds) const; |
41 | 45 |
42 int GetMinimizeButtonOffsetForWindow() const; | 46 int GetMinimizeButtonOffsetForWindow() const; |
43 | 47 |
44 HWND hwnd_; | 48 HWND hwnd_; |
45 | 49 |
46 // Cached offset of the minimize button. If RTL this is the location of the | 50 // Cached offset of the minimize button. If RTL this is the location of the |
47 // minimize button, if LTR this is the offset from the right edge of the | 51 // minimize button, if LTR this is the offset from the right edge of the |
48 // client area to the minimize button. | 52 // client area to the minimize button. |
49 mutable int cached_minimize_button_x_delta_; | 53 mutable int cached_minimize_button_x_delta_; |
50 | 54 |
51 // Static cache of |cached_minimize_button_x_delta_|. | 55 // Static cache of |cached_minimize_button_x_delta_|. |
52 static int last_cached_minimize_button_x_delta_; | 56 static int last_cached_minimize_button_x_delta_; |
53 | 57 |
54 // Static cache of offset value representing the difference between | 58 // Static cache of offset value representing the difference between |
55 // DWMWA_CAPTION_BUTTON_BOUNDS and WM_GETTITLEBARINFOEX | 59 // DWMWA_CAPTION_BUTTON_BOUNDS and WM_GETTITLEBARINFOEX |
56 static int button_bounds_position_offset_; | 60 static int button_bounds_position_offset_; |
57 | 61 |
58 // Has OnHWNDActivated() been invoked? | 62 // Has OnHWNDActivated() been invoked? |
59 bool was_activated_; | 63 bool was_activated_; |
60 | 64 |
61 DISALLOW_COPY_AND_ASSIGN(MinimizeButtonMetrics); | 65 DISALLOW_COPY_AND_ASSIGN(MinimizeButtonMetrics); |
62 }; | 66 }; |
63 | 67 |
64 #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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