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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
// Copyright (c) 2009 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 "views/controls/link.h"
#if defined(OS_LINUX)
#include <gdk/gdk.h>
#endif
#include "app/gfx/color_utils.h"
#include "app/gfx/font.h"
#include "base/keyboard_codes.h"
#include "base/logging.h"
#include "views/event.h"
namespace {
void GetColors(const SkColor* background_color, // NULL means "use default"
SkColor* highlighted_color,
SkColor* disabled_color,
SkColor* normal_color) {
static SkColor kHighlightedColor, kDisabledColor, kNormalColor;
static bool initialized = false;
if (!initialized) {
#if defined(OS_WIN)
kHighlightedColor = color_utils::GetReadableColor(
SkColorSetRGB(200, 0, 0), color_utils::GetSysSkColor(COLOR_WINDOW));
kDisabledColor = color_utils::GetSysSkColor(COLOR_WINDOWTEXT);
kNormalColor = color_utils::GetSysSkColor(COLOR_HOTLIGHT);
#else
// TODO(beng): source from theme provider.
kHighlightedColor = SK_ColorRED;
kDisabledColor = SK_ColorBLACK;
kNormalColor = SkColorSetRGB(0, 51, 153);
#endif
initialized = true;
}
if (background_color) {
*highlighted_color = color_utils::GetReadableColor(kHighlightedColor,
*background_color);
*disabled_color = color_utils::GetReadableColor(kDisabledColor,
*background_color);
*normal_color = color_utils::GetReadableColor(kNormalColor,
*background_color);
} else {
*highlighted_color = kHighlightedColor;
*disabled_color = kDisabledColor;
*normal_color = kNormalColor;
}
}
}
namespace views {
#if defined(OS_WIN)
static HCURSOR g_hand_cursor = NULL;
#endif
const char Link::kViewClassName[] = "views/Link";
Link::Link() : Label(L""),
controller_(NULL),
highlighted_(false) {
Init();
SetFocusable(true);
}
Link::Link(const std::wstring& title) : Label(title),
controller_(NULL),
highlighted_(false) {
Init();
SetFocusable(true);
}
void Link::Init() {
GetColors(NULL, &highlighted_color_, &disabled_color_, &normal_color_);
SetColor(normal_color_);
ValidateStyle();
}
Link::~Link() {
}
void Link::SetController(LinkController* controller) {
controller_ = controller;
}
const LinkController* Link::GetController() {
return controller_;
}
bool Link::OnMousePressed(const MouseEvent& e) {
if (!enabled_ || (!e.IsLeftMouseButton() && !e.IsMiddleMouseButton()))
return false;
SetHighlighted(true);
return true;
}
bool Link::OnMouseDragged(const MouseEvent& e) {
SetHighlighted(enabled_ &&
(e.IsLeftMouseButton() || e.IsMiddleMouseButton()) &&
HitTest(e.location()));
return true;
}
void Link::OnMouseReleased(const MouseEvent& e, bool canceled) {
// Change the highlight first just in case this instance is deleted
// while calling the controller
SetHighlighted(false);
if (enabled_ && !canceled &&
(e.IsLeftMouseButton() || e.IsMiddleMouseButton()) &&
HitTest(e.location())) {
// Focus the link on click.
RequestFocus();
if (controller_)
controller_->LinkActivated(this, e.GetFlags());
}
}
bool Link::OnKeyPressed(const KeyEvent& e) {
#if defined(OS_WIN)
bool activate = ((e.GetKeyCode() == base::VKEY_SPACE) ||
(e.GetKeyCode() == base::VKEY_RETURN));
#else
bool activate = false;
NOTIMPLEMENTED();
#endif
if (!activate)
return false;
SetHighlighted(false);
// Focus the link on key pressed.
RequestFocus();
if (controller_)
controller_->LinkActivated(this, e.GetFlags());
return true;
}
bool Link::SkipDefaultKeyEventProcessing(const KeyEvent& e) {
#if defined(OS_WIN)
// Make sure we don't process space or enter as accelerators.
return (e.GetKeyCode() == base::VKEY_SPACE) ||
(e.GetKeyCode() == base::VKEY_RETURN);
#else
NOTIMPLEMENTED();
return false;
#endif
}
void Link::SetFont(const gfx::Font& font) {
Label::SetFont(font);
ValidateStyle();
}
void Link::SetEnabled(bool f) {
if (f != enabled_) {
enabled_ = f;
ValidateStyle();
SchedulePaint();
}
}
gfx::NativeCursor Link::GetCursorForPoint(Event::EventType event_type, int x,
int y) {
if (!enabled_)
return NULL;
#if defined(OS_WIN)
if (!g_hand_cursor)
g_hand_cursor = LoadCursor(NULL, IDC_HAND);
return g_hand_cursor;
#elif defined(OS_LINUX)
return gdk_cursor_new(GDK_HAND2);
#endif
}
std::string Link::GetClassName() const {
return kViewClassName;
}
void Link::SetHighlightedColor(const SkColor& color) {
normal_color_ = color;
ValidateStyle();
}
void Link::SetDisabledColor(const SkColor& color) {
disabled_color_ = color;
ValidateStyle();
}
void Link::SetNormalColor(const SkColor& color) {
normal_color_ = color;
ValidateStyle();
}
void Link::MakeReadableOverBackgroundColor(const SkColor& color) {
GetColors(&color, &highlighted_color_, &disabled_color_, &normal_color_);
ValidateStyle();
}
void Link::SetHighlighted(bool f) {
if (f != highlighted_) {
highlighted_ = f;
ValidateStyle();
SchedulePaint();
}
}
void Link::ValidateStyle() {
gfx::Font font = GetFont();
if (enabled_) {
if ((font.style() & gfx::Font::UNDERLINED) == 0)
Label::SetFont(font.DeriveFont(0, font.style() | gfx::Font::UNDERLINED));
Label::SetColor(highlighted_ ? highlighted_color_ : normal_color_);
} else {
if ((font.style() & gfx::Font::UNDERLINED) != 0)
Label::SetFont(font.DeriveFont(0, font.style() & ~gfx::Font::UNDERLINED));
Label::SetColor(disabled_color_);
}
}
} // namespace views
|
