1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/panels/panel_mouse_watcher_win.h"
#include "base/logging.h"
#include "base/scoped_ptr.h"
#include "chrome/browser/ui/panels/panel.h"
#include "chrome/browser/ui/panels/panel_manager.h"
#include <windows.h>
namespace {
HMODULE GetModuleHandleFromAddress(void *address) {
MEMORY_BASIC_INFORMATION mbi;
SIZE_T result = ::VirtualQuery(address, &mbi, sizeof(mbi));
return static_cast<HMODULE>(mbi.AllocationBase);
}
// Gets the handle to the currently executing module.
HMODULE GetCurrentModuleHandle() {
return ::GetModuleHandleFromAddress(GetCurrentModuleHandle);
}
class PanelMouseWatcherWin {
public:
PanelMouseWatcherWin();
~PanelMouseWatcherWin();
private:
static LRESULT CALLBACK MouseHookProc(int code, WPARAM wparam, LPARAM lparam);
void OnMouseAction(int mouse_x, int mouse_y);
HHOOK mouse_hook_;
bool bring_up_titlebar_;
DISALLOW_COPY_AND_ASSIGN(PanelMouseWatcherWin);
};
scoped_ptr<PanelMouseWatcherWin> mouse_watcher;
PanelMouseWatcherWin::PanelMouseWatcherWin()
: mouse_hook_(NULL),
bring_up_titlebar_(false) {
mouse_hook_ = ::SetWindowsHookEx(
WH_MOUSE_LL, MouseHookProc, GetCurrentModuleHandle(), 0);
DCHECK(mouse_hook_);
}
PanelMouseWatcherWin::~PanelMouseWatcherWin() {
::UnhookWindowsHookEx(mouse_hook_);
}
LRESULT CALLBACK PanelMouseWatcherWin::MouseHookProc(int code,
WPARAM wparam,
LPARAM lparam) {
if (code == HC_ACTION) {
MOUSEHOOKSTRUCT* hook_struct = reinterpret_cast<MOUSEHOOKSTRUCT*>(lparam);
if (hook_struct)
mouse_watcher->OnMouseAction(hook_struct->pt.x, hook_struct->pt.y);
}
return ::CallNextHookEx(NULL, code, wparam, lparam);
}
void PanelMouseWatcherWin::OnMouseAction(int mouse_x, int mouse_y) {
PanelManager* panel_manager = PanelManager::GetInstance();
bool bring_up_titlebar =
panel_manager->ShouldBringUpTitleBarForAllMinimizedPanels(
mouse_x, mouse_y);
if (bring_up_titlebar == bring_up_titlebar_)
return;
bring_up_titlebar_ = bring_up_titlebar;
panel_manager->BringUpOrDownTitleBarForAllMinimizedPanels(bring_up_titlebar);
}
}
void EnsureMouseWatcherStarted() {
if (!mouse_watcher.get())
mouse_watcher.reset(new PanelMouseWatcherWin());
}
void StopMouseWatcher() {
mouse_watcher.reset(NULL);
}
bool IsMouseWatcherStarted() {
return mouse_watcher.get() != NULL;
}
|
