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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
// Copyright 2013 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 "ui/views/corewm/tooltip_win.h"
#include <winuser.h>
#include "base/debug/stack_trace.h"
#include "base/i18n/rtl.h"
#include "base/logging.h"
#include "ui/base/l10n/l10n_util_win.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/screen.h"
#include "ui/gfx/win/dpi.h"
#include "ui/views/corewm/cursor_height_provider_win.h"
namespace views {
namespace corewm {
TooltipWin::TooltipWin(HWND parent)
: parent_hwnd_(parent),
tooltip_hwnd_(NULL),
showing_(false) {
memset(&toolinfo_, 0, sizeof(toolinfo_));
toolinfo_.cbSize = sizeof(toolinfo_);
toolinfo_.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
toolinfo_.uId = reinterpret_cast<UINT_PTR>(parent_hwnd_);
toolinfo_.hwnd = parent_hwnd_;
toolinfo_.lpszText = NULL;
toolinfo_.lpReserved = NULL;
SetRectEmpty(&toolinfo_.rect);
}
TooltipWin::~TooltipWin() {
if (tooltip_hwnd_)
DestroyWindow(tooltip_hwnd_);
}
bool TooltipWin::HandleNotify(int w_param, NMHDR* l_param, LRESULT* l_result) {
if (tooltip_hwnd_ == NULL)
return false;
switch (l_param->code) {
case TTN_POP:
showing_ = false;
return true;
case TTN_SHOW:
*l_result = TRUE;
PositionTooltip();
showing_ = true;
return true;
default:
break;
}
return false;
}
bool TooltipWin::EnsureTooltipWindow() {
if (tooltip_hwnd_)
return true;
tooltip_hwnd_ = CreateWindowEx(
WS_EX_TRANSPARENT | l10n_util::GetExtendedTooltipStyles(),
TOOLTIPS_CLASS, NULL, TTS_NOPREFIX | WS_POPUP, 0, 0, 0, 0,
parent_hwnd_, NULL, NULL, NULL);
if (!tooltip_hwnd_) {
PLOG(WARNING) << "tooltip creation failed, disabling tooltips";
return false;
}
l10n_util::AdjustUIFontForWindow(tooltip_hwnd_);
SendMessage(tooltip_hwnd_, TTM_ADDTOOL, 0,
reinterpret_cast<LPARAM>(&toolinfo_));
return true;
}
void TooltipWin::PositionTooltip() {
// This code only runs for non-metro, so GetNativeScreen() is fine.
gfx::Point screen_point = gfx::win::DIPToScreenPoint(location_);
const int cursoroffset = GetCurrentCursorVisibleHeight();
screen_point.Offset(0, cursoroffset);
DWORD tooltip_size = SendMessage(tooltip_hwnd_, TTM_GETBUBBLESIZE, 0,
reinterpret_cast<LPARAM>(&toolinfo_));
const gfx::Size size(LOWORD(tooltip_size), HIWORD(tooltip_size));
const gfx::Display display(
gfx::Screen::GetNativeScreen()->GetDisplayNearestPoint(screen_point));
gfx::Rect tooltip_bounds(screen_point, size);
tooltip_bounds.AdjustToFit(gfx::win::DIPToScreenRect(display.work_area()));
SetWindowPos(tooltip_hwnd_, NULL, tooltip_bounds.x(), tooltip_bounds.y(), 0,
0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE);
}
void TooltipWin::SetText(aura::Window* window,
const base::string16& tooltip_text,
const gfx::Point& location) {
if (!EnsureTooltipWindow())
return;
// See comment in header for details on why |location_| is needed.
location_ = location;
// Without this we get a flicker of the tooltip appearing at 0x0. Not sure
// why.
SetWindowPos(tooltip_hwnd_, NULL, 0, 0, 0, 0,
SWP_HIDEWINDOW | SWP_NOACTIVATE | SWP_NOMOVE |
SWP_NOREPOSITION | SWP_NOSIZE | SWP_NOZORDER);
base::string16 adjusted_text(tooltip_text);
base::i18n::AdjustStringForLocaleDirection(&adjusted_text);
toolinfo_.lpszText = const_cast<WCHAR*>(adjusted_text.c_str());
SendMessage(tooltip_hwnd_, TTM_SETTOOLINFO, 0,
reinterpret_cast<LPARAM>(&toolinfo_));
// This code only runs for non-metro, so GetNativeScreen() is fine.
const gfx::Point screen_point = gfx::win::DIPToScreenPoint(location_);
gfx::Display display(
gfx::Screen::GetNativeScreen()->GetDisplayNearestPoint(screen_point));
const gfx::Rect monitor_bounds = display.bounds();
int max_width = (monitor_bounds.width() + 1) / 2;
SendMessage(tooltip_hwnd_, TTM_SETMAXTIPWIDTH, 0, max_width);
}
void TooltipWin::Show() {
if (!EnsureTooltipWindow())
return;
SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE,
TRUE, reinterpret_cast<LPARAM>(&toolinfo_));
SetWindowPos(tooltip_hwnd_, HWND_TOPMOST, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOOWNERZORDER | SWP_NOSIZE);
}
void TooltipWin::Hide() {
if (!tooltip_hwnd_)
return;
SendMessage(tooltip_hwnd_, TTM_TRACKACTIVATE, FALSE,
reinterpret_cast<LPARAM>(&toolinfo_));
}
bool TooltipWin::IsVisible() {
return showing_;
}
} // namespace corewm
} // namespace views
|
