OLD | NEW |
| (Empty) |
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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "chrome_frame/infobars/internal/displaced_window_manager.h" | |
6 | |
7 DisplacedWindowManager::DisplacedWindowManager() { | |
8 } | |
9 | |
10 void DisplacedWindowManager::UpdateLayout() { | |
11 // Call SetWindowPos with SWP_FRAMECHANGED for displaced window. | |
12 // Displaced window will receive WM_NCCALCSIZE to recalculate its client size. | |
13 ::SetWindowPos(m_hWnd, | |
14 NULL, 0, 0, 0, 0, | |
15 SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | | |
16 SWP_FRAMECHANGED); | |
17 } | |
18 | |
19 LRESULT DisplacedWindowManager::OnNcCalcSize(BOOL calc_valid_rects, | |
20 LPARAM lparam) { | |
21 // Ask the original window proc to calculate the 'natural' size of the window. | |
22 LRESULT ret = DefWindowProc(WM_NCCALCSIZE, | |
23 static_cast<WPARAM>(calc_valid_rects), lparam); | |
24 if (lparam == NULL) | |
25 return ret; | |
26 | |
27 // Whether calc_valid_rects is true or false, we could treat beginning of | |
28 // lparam as a RECT object. | |
29 RECT* rect = reinterpret_cast<RECT*>(lparam); | |
30 RECT natural_rect = *rect; | |
31 if (delegate() != NULL) | |
32 delegate()->AdjustDisplacedWindowDimensions(rect); | |
33 | |
34 // If we modified the window's dimensions, there is no way to respect a custom | |
35 // "client-area preservation strategy", so we must force a redraw to be safe. | |
36 if (calc_valid_rects && ret == WVR_VALIDRECTS && | |
37 !EqualRect(&natural_rect, rect)) { | |
38 ret = WVR_REDRAW; | |
39 } | |
40 | |
41 return ret; | |
42 } | |
OLD | NEW |