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1 // Copyright (c) 2012 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 "ui/views/color_chooser/color_chooser_view.h" | |
6 | |
7 #include "base/bind.h" | |
8 #include "base/logging.h" | |
9 #include "base/message_loop.h" | |
10 #include "base/string_number_conversions.h" | |
11 #include "base/stringprintf.h" | |
12 #include "base/utf_string_conversions.h" | |
13 #include "ui/gfx/canvas.h" | |
14 #include "ui/base/keycodes/keyboard_codes.h" | |
15 #include "ui/views/color_chooser/color_chooser_listener.h" | |
16 #include "ui/views/controls/textfield/textfield.h" | |
17 #include "ui/views/controls/textfield/textfield_controller.h" | |
18 #include "ui/views/events/event.h" | |
19 #include "ui/views/layout/box_layout.h" | |
20 #include "ui/views/widget/widget.h" | |
21 | |
22 namespace { | |
23 | |
24 const int kHueBarWidth = 20; | |
25 const int kSaturationValueSize = 200; | |
26 const int kMarginWidth = 5; | |
27 const int kSaturationValueIndicatorRadius = 3; | |
Peter Kasting
2012/06/21 18:46:16
The saturation/value square still has an even-pixe
Jun Mukai
2012/06/22 09:39:35
Changed to crosshair.
| |
28 const int kHueIndicatorSize = 3; | |
29 | |
30 string16 GetColorText(SkColor color) { | |
31 return ASCIIToUTF16(base::StringPrintf("#%02x%02x%02x", | |
32 SkColorGetR(color), | |
33 SkColorGetG(color), | |
34 SkColorGetB(color))); | |
35 } | |
36 | |
37 bool GetColorFromText(const string16& text, SkColor* result) { | |
38 if (text.size() != 6 && !(text.size() == 7 && text[0] == '#')) | |
39 return false; | |
40 | |
41 std::string input = UTF16ToUTF8((text.size() == 6) ? text : text.substr(1)); | |
42 std::vector<uint8> hex; | |
43 if (!base::HexStringToBytes(input, &hex)) | |
44 return false; | |
45 | |
46 *result = SkColorSetRGB(hex[0], hex[1], hex[2]); | |
47 return true; | |
48 } | |
49 | |
50 } // namespace | |
51 | |
52 namespace views { | |
53 | |
54 // The class to choose the hue of the color. It draws a vertical bar and | |
55 // the indicator for the currently selected hue. | |
56 class ColorChooserView::HueView : public View { | |
57 public: | |
58 explicit HueView(ColorChooserView* chooser_view); | |
59 | |
60 void OnHueChanged(SkScalar hue); | |
61 | |
62 private: | |
63 // View overrides: | |
64 virtual gfx::Size GetPreferredSize() OVERRIDE; | |
65 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; | |
66 virtual bool OnMousePressed(const MouseEvent& event) OVERRIDE; | |
67 virtual bool OnMouseDragged(const MouseEvent& event) OVERRIDE; | |
68 | |
69 ColorChooserView* chooser_view_; | |
70 int level_; | |
71 | |
72 DISALLOW_COPY_AND_ASSIGN(HueView); | |
73 }; | |
74 | |
75 ColorChooserView::HueView::HueView(ColorChooserView* chooser_view) | |
76 : chooser_view_(chooser_view), | |
77 level_(0) { | |
78 set_focusable(false); | |
79 } | |
80 | |
81 void ColorChooserView::HueView::OnHueChanged(SkScalar hue) { | |
82 SkScalar height = SkIntToScalar(GetPreferredSize().height()); | |
83 int level = SkScalarDiv(SkScalarMul(hue, height), SkIntToScalar(360)); | |
84 if (level_ != level) { | |
85 level_ = level; | |
86 SchedulePaint(); | |
87 } | |
88 } | |
89 | |
90 gfx::Size ColorChooserView::HueView::GetPreferredSize() { | |
91 // We put indicators on the both sides of the hue bar. | |
92 return gfx::Size(kHueBarWidth + kHueIndicatorSize * 2, kSaturationValueSize); | |
93 } | |
94 | |
95 void ColorChooserView::HueView::OnPaint(gfx::Canvas* canvas) { | |
96 SkScalar hsv[3]; | |
97 // In the hue bar, saturation and value for the color should be always 100%. | |
98 hsv[1] = SK_Scalar1; | |
99 hsv[2] = SK_Scalar1; | |
100 | |
101 for (int y = 0; y < height(); ++y) { | |
102 hsv[0] = SkScalarDiv(SkScalarMul(SkIntToScalar(360), SkIntToScalar(y)), | |
103 SkIntToScalar(height())); | |
104 canvas->DrawLine(gfx::Point(kHueIndicatorSize, y), | |
105 gfx::Point(width() - kHueIndicatorSize, y), | |
106 SkHSVToColor(hsv)); | |
107 } | |
108 | |
109 // Put the triangular indicators besides. | |
110 SkPath left_indicator_path; | |
111 SkPath right_indicator_path; | |
112 left_indicator_path.moveTo( | |
113 SK_ScalarHalf, SkIntToScalar(level_ - kHueIndicatorSize)); | |
114 left_indicator_path.lineTo( | |
115 kHueIndicatorSize, SkIntToScalar(level_)); | |
116 left_indicator_path.lineTo( | |
117 SK_ScalarHalf, SkIntToScalar(level_ + kHueIndicatorSize)); | |
118 left_indicator_path.lineTo( | |
119 SK_ScalarHalf, SkIntToScalar(level_ - kHueIndicatorSize)); | |
120 right_indicator_path.moveTo( | |
121 SkIntToScalar(width()) - SK_ScalarHalf, | |
122 SkIntToScalar(level_ - kHueIndicatorSize)); | |
123 right_indicator_path.lineTo( | |
124 SkIntToScalar(width() - kHueIndicatorSize) - SK_ScalarHalf, | |
125 SkIntToScalar(level_)); | |
126 right_indicator_path.lineTo( | |
127 SkIntToScalar(width()) - SK_ScalarHalf, | |
128 SkIntToScalar(level_ + kHueIndicatorSize)); | |
129 right_indicator_path.lineTo( | |
130 SkIntToScalar(width()) - SK_ScalarHalf, | |
131 SkIntToScalar(level_ - kHueIndicatorSize)); | |
132 | |
133 SkPaint indicator_paint; | |
134 indicator_paint.setColor(SK_ColorBLACK); | |
135 indicator_paint.setStyle(SkPaint::kStroke_Style); | |
136 canvas->DrawPath(left_indicator_path, indicator_paint); | |
137 canvas->DrawPath(right_indicator_path, indicator_paint); | |
138 } | |
139 | |
140 bool ColorChooserView::HueView::OnMousePressed(const MouseEvent& event) { | |
141 level_ = std::max(0, std::min(height(), event.y())); | |
142 chooser_view_->OnHueChosen(SkScalarDiv(SkScalarMul(SkIntToScalar(360), | |
143 SkIntToScalar(level_)), | |
144 SkIntToScalar(height()))); | |
145 return true; | |
146 } | |
147 | |
148 bool ColorChooserView::HueView::OnMouseDragged(const MouseEvent& event) { | |
149 return OnMousePressed(event); | |
150 } | |
151 | |
152 // The class to choose the saturation and the value of the color. It draws | |
153 // a square area and the indicator for the currently selected saturation and | |
154 // value. | |
155 class ColorChooserView::SaturationValueView : public View { | |
156 public: | |
157 explicit SaturationValueView(ColorChooserView* chooser_view); | |
158 | |
159 void OnHueChanged(SkScalar hue); | |
160 void OnSaturationValueChanged(SkScalar saturation, SkScalar value); | |
161 | |
162 private: | |
163 // View overrides: | |
164 virtual gfx::Size GetPreferredSize() OVERRIDE; | |
165 virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE; | |
166 virtual bool OnMousePressed(const MouseEvent& event) OVERRIDE; | |
167 virtual bool OnMouseDragged(const MouseEvent& event) OVERRIDE; | |
168 | |
169 ColorChooserView* chooser_view_; | |
170 SkScalar hue_; | |
171 gfx::Point marker_position_; | |
172 | |
173 DISALLOW_COPY_AND_ASSIGN(SaturationValueView); | |
174 }; | |
175 | |
176 ColorChooserView::SaturationValueView::SaturationValueView( | |
177 ColorChooserView* chooser_view) | |
178 : chooser_view_(chooser_view), hue_(0) { | |
179 set_focusable(false); | |
180 } | |
181 | |
182 void ColorChooserView::SaturationValueView::OnHueChanged(SkScalar hue) { | |
183 if (hue_ != hue) { | |
184 hue_ = hue; | |
185 SchedulePaint(); | |
186 } | |
187 } | |
188 | |
189 void ColorChooserView::SaturationValueView::OnSaturationValueChanged( | |
190 SkScalar saturation, | |
191 SkScalar value) { | |
192 SkScalar scalar_size = SkIntToScalar(kSaturationValueSize); | |
193 int x = SkScalarToInt(SkScalarMul(saturation, scalar_size)); | |
194 int y = SkScalarToInt(SkScalarMul((SK_Scalar1 - value), scalar_size)); | |
195 if (gfx::Point(x, y) == marker_position_) | |
196 return; | |
197 | |
198 marker_position_.set_x(x); | |
199 marker_position_.set_y(y); | |
200 SchedulePaint(); | |
201 chooser_view_->OnSaturationValueChosen(saturation, value); | |
202 } | |
203 | |
204 gfx::Size ColorChooserView::SaturationValueView::GetPreferredSize() { | |
205 return gfx::Size(kSaturationValueSize, kSaturationValueSize); | |
206 } | |
207 | |
208 void ColorChooserView::SaturationValueView::OnPaint(gfx::Canvas* canvas) { | |
209 SkScalar hsv[3]; | |
210 hsv[0] = hue_; | |
211 SkScalar scalar_size = SkIntToScalar(kSaturationValueSize); | |
212 for (int x = 0; x < width(); ++x) { | |
213 hsv[1] = SkScalarDiv(SkIntToScalar(x), scalar_size); | |
214 for (int y = 0; y < height(); ++y) { | |
215 hsv[2] = SkScalarDiv(SK_Scalar1 - SkIntToScalar(y), scalar_size); | |
216 SkPaint paint; | |
217 paint.setColor(SkHSVToColor(255, hsv)); | |
218 canvas->DrawPoint(gfx::Point(x, y), paint); | |
219 } | |
220 } | |
221 | |
222 SkPaint circle_paint; | |
223 // The background is very dark at the bottom of the view. Use a white | |
224 // marker in that case. | |
225 circle_paint.setColor( | |
226 (marker_position_.y() > width() * 3 / 4) ? SK_ColorWHITE : SK_ColorBLACK); | |
227 circle_paint.setStyle(SkPaint::kStroke_Style); | |
228 canvas->DrawCircle(marker_position_, | |
229 kSaturationValueIndicatorRadius, circle_paint); | |
230 } | |
231 | |
232 bool ColorChooserView::SaturationValueView::OnMousePressed( | |
233 const MouseEvent& event) { | |
234 SkScalar scalar_size = SkIntToScalar(kSaturationValueSize); | |
235 SkScalar saturation = SkScalarDiv(SkIntToScalar(event.x()), scalar_size); | |
236 SkScalar value = SkScalarDiv( | |
Peter Kasting
2012/06/21 18:46:16
Nit: Extra space
Jun Mukai
2012/06/22 09:39:35
Done.
| |
237 SK_Scalar1 - SkIntToScalar(event.y()), scalar_size); | |
238 saturation = SkScalarPin(saturation, 0, SK_Scalar1); | |
239 value = SkScalarPin(value, 0, SK_Scalar1); | |
240 OnSaturationValueChanged(saturation, value); | |
241 return true; | |
242 } | |
243 | |
244 bool ColorChooserView::SaturationValueView::OnMouseDragged( | |
245 const MouseEvent& event) { | |
246 return OnMousePressed(event); | |
247 } | |
248 | |
249 | |
250 ColorChooserView::ColorChooserView(ColorChooserListener* listener, | |
251 SkColor initial_color) | |
252 : listener_(listener) { | |
253 DCHECK(listener_); | |
254 | |
255 set_focusable(false); | |
256 set_background(Background::CreateSolidBackground(SK_ColorLTGRAY)); | |
257 SetLayoutManager(new BoxLayout(BoxLayout::kVertical, kMarginWidth, | |
258 kMarginWidth, kMarginWidth)); | |
259 | |
260 View* container = new View(); | |
261 container->SetLayoutManager(new BoxLayout(BoxLayout::kHorizontal, 0, 0, | |
262 kMarginWidth)); | |
263 saturation_value_ = new SaturationValueView(this); | |
264 container->AddChildView(saturation_value_); | |
265 hue_ = new HueView(this); | |
266 container->AddChildView(hue_); | |
267 AddChildView(container); | |
268 | |
269 textfield_ = new Textfield(); | |
270 textfield_->SetController(this); | |
271 AddChildView(textfield_); | |
272 | |
273 OnColorChanged(initial_color); | |
274 MessageLoopForUI::current()->PostTask(FROM_HERE, | |
275 base::Bind(&View::RequestFocus, base::Unretained(textfield_))); | |
276 } | |
277 | |
278 ColorChooserView::~ColorChooserView() { | |
279 } | |
280 | |
281 void ColorChooserView::OnOwningWindowClosed() { | |
282 listener_ = NULL; | |
283 Widget* widget = GetWidget(); | |
284 if (widget && widget->IsVisible()) | |
285 widget->Close(); | |
286 } | |
287 | |
288 void ColorChooserView::OnColorChanged(SkColor color) { | |
289 SkColorToHSV(color, hsv_); | |
290 hue_->OnHueChanged(hsv_[0]); | |
291 saturation_value_->OnHueChanged(hsv_[0]); | |
292 saturation_value_->OnSaturationValueChanged(hsv_[1], hsv_[2]); | |
293 textfield_->SetText(GetColorText(color)); | |
294 } | |
295 | |
296 void ColorChooserView::OnHueChosen(SkScalar hue) { | |
297 hsv_[0] = hue; | |
298 SkColor color = SkHSVToColor(255, hsv_); | |
299 listener_->OnColorChosen(color); | |
300 saturation_value_->OnHueChanged(hue); | |
301 textfield_->SetText(GetColorText(color)); | |
302 } | |
303 | |
304 void ColorChooserView::OnSaturationValueChosen(SkScalar saturation, | |
305 SkScalar value) { | |
306 hsv_[1] = saturation; | |
307 hsv_[2] = value; | |
308 SkColor color = SkHSVToColor(255, hsv_); | |
309 listener_->OnColorChosen(color); | |
310 textfield_->SetText(GetColorText(color)); | |
311 } | |
312 | |
313 ui::ModalType ColorChooserView::GetModalType() const { | |
314 return ui::MODAL_TYPE_WINDOW; | |
315 } | |
316 | |
317 void ColorChooserView::WindowClosing() { | |
318 if (listener_) | |
319 listener_->OnColorChooserDialogClosed(); | |
320 } | |
321 | |
322 View* ColorChooserView::GetContentsView() { | |
323 return this; | |
324 } | |
325 | |
326 void ColorChooserView::ContentsChanged(Textfield* sender, | |
327 const string16& new_contents) { | |
328 SkColor color = SK_ColorBLACK; | |
329 if (GetColorFromText(new_contents, &color)) { | |
330 SkColorToHSV(color, hsv_); | |
331 listener_->OnColorChosen(color); | |
332 hue_->OnHueChanged(hsv_[0]); | |
333 saturation_value_->OnHueChanged(hsv_[0]); | |
334 saturation_value_->OnSaturationValueChanged(hsv_[1], hsv_[2]); | |
335 } | |
336 } | |
337 | |
338 bool ColorChooserView::HandleKeyEvent(Textfield* sender, | |
339 const KeyEvent& key_event) { | |
340 if (key_event.key_code() != ui::VKEY_RETURN && | |
341 key_event.key_code() != ui::VKEY_ESCAPE) | |
342 return false; | |
343 | |
344 GetWidget()->Close(); | |
345 return true; | |
346 } | |
347 | |
348 } // namespace views | |
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