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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
// Copyright (c) 2012 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/examples/text_example.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font_list.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/checkbox.h"
#include "ui/views/controls/combobox/combobox.h"
#include "ui/views/controls/label.h"
#include "ui/views/examples/example_combobox_model.h"
#include "ui/views/layout/grid_layout.h"
#include "ui/views/view.h"
namespace views {
namespace examples {
namespace {
// Number of columns in the view layout.
const int kNumColumns = 10;
const char kShortText[] = "The quick brown fox jumps over the lazy dog.";
const char kLongText[] =
"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod "
"tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim "
"veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea "
"commodo consequat.\nDuis aute irure dolor in reprehenderit in voluptate "
"velit esse cillum dolore eu fugiat nulla pariatur.\n\nExcepteur sint "
"occaecat cupidatat non proident, sunt in culpa qui officia deserunt "
"mollit anim id est laborum.";
const char kAmpersandText[] =
"The quick && &brown fo&x jumps over the lazy dog.";
const wchar_t kRightToLeftText[] =
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd! "
L"\x5e9\x5dc\x5d5\x5dd \x5d4\x5e2\x5d5\x5dc\x5dd!";
const char* kTextExamples[] = { "Short", "Long", "Ampersands", "RTL Hebrew", };
const char* kElideBehaviors[] = { "Elide", "No Elide", "Fade", };
const char* kPrefixOptions[] = { "Default", "Show", "Hide", };
const char* kHorizontalAligments[] = { "Default", "Left", "Center", "Right", };
// Toggles bit |flag| on |flags| based on state of |checkbox|.
void SetFlagFromCheckbox(Checkbox* checkbox, int* flags, int flag) {
if (checkbox->checked())
*flags |= flag;
else
*flags &= ~flag;
}
} // namespace
// TextExample's content view, which draws stylized string.
class TextExample::TextExampleView : public View {
public:
TextExampleView()
: text_(base::ASCIIToUTF16(kShortText)),
flags_(0),
halo_(false),
elide_(gfx::NO_ELIDE) {
}
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
View::OnPaint(canvas);
const gfx::Rect bounds = GetContentsBounds();
const SkColor color = SK_ColorDKGRAY;
if (elide_ == gfx::FADE_TAIL) {
canvas->DrawFadedString(text_, font_list_, color, bounds, flags_);
} else if (halo_) {
canvas->DrawStringRectWithHalo(text_, font_list_, color, SK_ColorYELLOW,
bounds, flags_);
} else {
canvas->DrawStringRectWithFlags(text_, font_list_, color, bounds, flags_);
}
}
int flags() const { return flags_; }
void set_flags(int flags) { flags_ = flags; }
void set_text(const base::string16& text) { text_ = text; }
void set_halo(bool halo) { halo_ = halo; }
void set_elide(gfx::ElideBehavior elide) { elide_ = elide; }
int GetStyle() const { return font_list_.GetFontStyle(); }
void SetStyle(int style) { font_list_ = font_list_.DeriveWithStyle(style); }
private:
// The font used for drawing the text.
gfx::FontList font_list_;
// The text to draw.
base::string16 text_;
// Text flags for passing to |DrawStringRect()|.
int flags_;
// A flag to draw a halo around the text.
bool halo_;
// The eliding, fading, or truncating behavior.
gfx::ElideBehavior elide_;
DISALLOW_COPY_AND_ASSIGN(TextExampleView);
};
TextExample::TextExample() : ExampleBase("Text Styles") {}
TextExample::~TextExample() {
// Remove the views first as some reference combobox models.
container()->RemoveAllChildViews(true);
}
Checkbox* TextExample::AddCheckbox(GridLayout* layout, const char* name) {
Checkbox* checkbox = new Checkbox(base::ASCIIToUTF16(name));
checkbox->set_listener(this);
layout->AddView(checkbox);
return checkbox;
}
Combobox* TextExample::AddCombobox(GridLayout* layout,
const char* name,
const char** strings,
int count) {
layout->StartRow(0, 0);
layout->AddView(new Label(base::ASCIIToUTF16(name)));
ExampleComboboxModel* model = new ExampleComboboxModel(strings, count);
example_combobox_model_.push_back(model);
Combobox* combobox = new Combobox(model);
combobox->SetSelectedIndex(0);
combobox->set_listener(this);
layout->AddView(combobox, kNumColumns - 1, 1);
return combobox;
}
void TextExample::CreateExampleView(View* container) {
text_view_ = new TextExampleView;
text_view_->SetBorder(Border::CreateSolidBorder(1, SK_ColorGRAY));
GridLayout* layout = new GridLayout(container);
container->SetLayoutManager(layout);
layout->AddPaddingRow(0, 8);
ColumnSet* column_set = layout->AddColumnSet(0);
column_set->AddPaddingColumn(0, 8);
column_set->AddColumn(GridLayout::LEADING, GridLayout::FILL,
0.1f, GridLayout::USE_PREF, 0, 0);
for (int i = 0; i < kNumColumns - 1; i++)
column_set->AddColumn(GridLayout::FILL, GridLayout::FILL,
0.1f, GridLayout::USE_PREF, 0, 0);
column_set->AddPaddingColumn(0, 8);
h_align_cb_ = AddCombobox(layout, "H-Align", kHorizontalAligments,
arraysize(kHorizontalAligments));
eliding_cb_ = AddCombobox(layout, "Eliding", kElideBehaviors,
arraysize(kElideBehaviors));
prefix_cb_ = AddCombobox(layout, "Prefix", kPrefixOptions,
arraysize(kPrefixOptions));
text_cb_ = AddCombobox(layout, "Example Text", kTextExamples,
arraysize(kTextExamples));
layout->StartRow(0, 0);
multiline_checkbox_ = AddCheckbox(layout, "Multiline");
break_checkbox_ = AddCheckbox(layout, "Character Break");
halo_checkbox_ = AddCheckbox(layout, "Halo");
bold_checkbox_ = AddCheckbox(layout, "Bold");
italic_checkbox_ = AddCheckbox(layout, "Italic");
underline_checkbox_ = AddCheckbox(layout, "Underline");
layout->AddPaddingRow(0, 20);
column_set = layout->AddColumnSet(1);
column_set->AddPaddingColumn(0, 16);
column_set->AddColumn(GridLayout::FILL, GridLayout::FILL,
1, GridLayout::USE_PREF, 0, 0);
column_set->AddPaddingColumn(0, 16);
layout->StartRow(1, 1);
layout->AddView(text_view_);
layout->AddPaddingRow(0, 8);
}
void TextExample::ButtonPressed(Button* button, const ui::Event& event) {
int flags = text_view_->flags();
int style = text_view_->GetStyle();
SetFlagFromCheckbox(multiline_checkbox_, &flags, gfx::Canvas::MULTI_LINE);
SetFlagFromCheckbox(break_checkbox_, &flags, gfx::Canvas::CHARACTER_BREAK);
SetFlagFromCheckbox(bold_checkbox_, &style, gfx::Font::BOLD);
SetFlagFromCheckbox(italic_checkbox_, &style, gfx::Font::ITALIC);
SetFlagFromCheckbox(underline_checkbox_, &style, gfx::Font::UNDERLINE);
text_view_->set_halo(halo_checkbox_->checked());
text_view_->set_flags(flags);
text_view_->SetStyle(style);
text_view_->SchedulePaint();
}
void TextExample::OnPerformAction(Combobox* combobox) {
int flags = text_view_->flags();
if (combobox == h_align_cb_) {
flags &= ~(gfx::Canvas::TEXT_ALIGN_LEFT |
gfx::Canvas::TEXT_ALIGN_CENTER |
gfx::Canvas::TEXT_ALIGN_RIGHT);
switch (combobox->selected_index()) {
case 0:
break;
case 1:
flags |= gfx::Canvas::TEXT_ALIGN_LEFT;
break;
case 2:
flags |= gfx::Canvas::TEXT_ALIGN_CENTER;
break;
case 3:
flags |= gfx::Canvas::TEXT_ALIGN_RIGHT;
break;
}
} else if (combobox == text_cb_) {
switch (combobox->selected_index()) {
case 0:
text_view_->set_text(base::ASCIIToUTF16(kShortText));
break;
case 1:
text_view_->set_text(base::ASCIIToUTF16(kLongText));
break;
case 2:
text_view_->set_text(base::ASCIIToUTF16(kAmpersandText));
break;
case 3:
text_view_->set_text(base::WideToUTF16(kRightToLeftText));
break;
}
} else if (combobox == eliding_cb_) {
switch (combobox->selected_index()) {
case 0:
text_view_->set_elide(gfx::ELIDE_TAIL);
break;
case 1:
text_view_->set_elide(gfx::NO_ELIDE);
break;
case 2:
text_view_->set_elide(gfx::FADE_TAIL);
break;
}
} else if (combobox == prefix_cb_) {
flags &= ~(gfx::Canvas::SHOW_PREFIX | gfx::Canvas::HIDE_PREFIX);
switch (combobox->selected_index()) {
case 0:
break;
case 1:
flags |= gfx::Canvas::SHOW_PREFIX;
break;
case 2:
flags |= gfx::Canvas::HIDE_PREFIX;
break;
}
}
text_view_->set_flags(flags);
text_view_->SchedulePaint();
}
} // namespace examples
} // namespace views
|
