1
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8 #include "SkWidgetViews.h"
9 #include "SkAnimator.h"
10 #include "SkCanvas.h"
11 #include "SkPaint.h"
12 #include "SkStream.h"
13 #include "SkSystemEventTypes.h"
14
15 /*
16 I have moved this to SkWidgetViews.h
17 enum SkinEnum {
18 kButton_SkinEnum,
19 kProgress_SkinEnum,
20 kScroll_SkinEnum,
21 kStaticText_SkinEnum,
22
23 kSkinEnumCount
24 };
25 */
26
get_skin_enum_path(SkinEnum se)27 const char* get_skin_enum_path(SkinEnum se)
28 {
29 SkASSERT((unsigned)se < kSkinEnumCount);
30
31 static const char* gSkinPaths[] = {
32 "common/default/default/skins/border3.xml",
33 "common/default/default/skins/button.xml",
34 "common/default/default/skins/progressBar.xml",
35 "common/default/default/skins/scrollBar.xml",
36 "common/default/default/skins/statictextpaint.xml"
37 };
38
39 return gSkinPaths[se];
40 }
41
init_skin_anim(const char path[],SkAnimator * anim)42 void init_skin_anim(const char path[], SkAnimator* anim) {
43 SkASSERT(path && anim);
44
45 SkAutoTDelete<SkStream> stream(SkStream::NewFromFile(path));
46 if (!stream.get()) {
47 SkDEBUGF(("init_skin_anim: loading skin failed <%s>\n", path));
48 sk_throw();
49 }
50
51 if (!anim->decodeStream(stream)) {
52 SkDEBUGF(("init_skin_anim: decoding skin failed <%s>\n", path));
53 sk_throw();
54 }
55 }
56
init_skin_anim(SkinEnum se,SkAnimator * anim)57 void init_skin_anim(SkinEnum se, SkAnimator* anim)
58 {
59 init_skin_anim(get_skin_enum_path(se), anim);
60 }
61
init_skin_paint(SkinEnum se,SkPaint * paint)62 void init_skin_paint(SkinEnum se, SkPaint* paint)
63 {
64 SkASSERT(paint);
65
66 SkAnimator anim;
67 SkCanvas canvas;
68
69 init_skin_anim(se, &anim);
70 anim.draw(&canvas, paint, 0);
71 }
72
inflate_paint(const SkDOM & dom,const SkDOM::Node * node,SkPaint * paint)73 void inflate_paint(const SkDOM& dom, const SkDOM::Node* node, SkPaint* paint)
74 {
75 SkASSERT(paint);
76
77 SkAnimator anim;
78 SkCanvas canvas;
79
80 if (!anim.decodeDOM(dom, node))
81 {
82 SkDEBUGF(("inflate_paint: decoding dom failed\n"));
83 SkDEBUGCODE(dom.dump(node);)
84 sk_throw();
85 }
86 anim.draw(&canvas, paint, 0);
87 }
88
89 ////////////////////////////////////////////////////////////////////////////////////////
90
SkWidgetView()91 SkWidgetView::SkWidgetView() : SkView(SkView::kFocusable_Mask | SkView::kEnabled_Mask)
92 {
93 }
94
getLabel() const95 const char* SkWidgetView::getLabel() const
96 {
97 return fLabel.c_str();
98 }
99
getLabel(SkString * label) const100 void SkWidgetView::getLabel(SkString* label) const
101 {
102 if (label)
103 *label = fLabel;
104 }
105
setLabel(const char label[])106 void SkWidgetView::setLabel(const char label[])
107 {
108 this->setLabel(label, label ? strlen(label) : 0);
109 }
110
setLabel(const char label[],size_t len)111 void SkWidgetView::setLabel(const char label[], size_t len)
112 {
113 if ((label == nullptr && fLabel.size() != 0) || !fLabel.equals(label, len))
114 {
115 SkString tmp(label, len);
116
117 this->onLabelChange(fLabel.c_str(), tmp.c_str());
118 fLabel.swap(tmp);
119 }
120 }
121
setLabel(const SkString & label)122 void SkWidgetView::setLabel(const SkString& label)
123 {
124 if (fLabel != label)
125 {
126 this->onLabelChange(fLabel.c_str(), label.c_str());
127 fLabel = label;
128 }
129 }
130
postWidgetEvent()131 bool SkWidgetView::postWidgetEvent()
132 {
133 if (!fEvent.isType(""))
134 {
135 SkEvent evt(fEvent); // make a copy since onPrepareWidgetEvent may edit the event
136
137 if (this->onPrepareWidgetEvent(&evt))
138 {
139 SkDEBUGCODE(evt.dump("SkWidgetView::postWidgetEvent");)
140
141 this->postToListeners(evt); // wonder if this should return true if there are > 0 listeners...
142 return true;
143 }
144 }
145 return false;
146 }
147
onInflate(const SkDOM & dom,const SkDOM::Node * node)148 /*virtual*/ void SkWidgetView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
149 {
150 this->INHERITED::onInflate(dom, node);
151
152 const char* label = dom.findAttr(node, "label");
153 if (label)
154 this->setLabel(label);
155
156 if ((node = dom.getFirstChild(node, "event")) != nullptr)
157 fEvent.inflate(dom, node);
158 }
159
onLabelChange(const char oldLabel[],const char newLabel[])160 /*virtual*/ void SkWidgetView::onLabelChange(const char oldLabel[], const char newLabel[])
161 {
162 this->inval(nullptr);
163 }
164
165 static const char gWidgetEventSinkIDSlotName[] = "sk-widget-sinkid-slot";
166
onPrepareWidgetEvent(SkEvent * evt)167 /*virtual*/ bool SkWidgetView::onPrepareWidgetEvent(SkEvent* evt)
168 {
169 evt->setS32(gWidgetEventSinkIDSlotName, this->getSinkID());
170 return true;
171 }
172
GetWidgetEventSinkID(const SkEvent & evt)173 SkEventSinkID SkWidgetView::GetWidgetEventSinkID(const SkEvent& evt)
174 {
175 int32_t sinkID;
176
177 return evt.findS32(gWidgetEventSinkIDSlotName, &sinkID) ? (SkEventSinkID)sinkID : 0;
178 }
179
180 ///////////////////////////////////////////////////////////////////////////////////////////////////
181
onEvent(const SkEvent & evt)182 /*virtual*/ bool SkButtonView::onEvent(const SkEvent& evt)
183 {
184 if (evt.isType(SK_EventType_Key) && evt.getFast32() == kOK_SkKey)
185 {
186 this->postWidgetEvent();
187 return true;
188 }
189 return this->INHERITED::onEvent(evt);
190 }
191
192 ///////////////////////////////////////////////////////////////////////////////////////////////////
193
SkCheckButtonView()194 SkCheckButtonView::SkCheckButtonView() : fCheckState(kOff_CheckState)
195 {
196 }
197
setCheckState(CheckState state)198 void SkCheckButtonView::setCheckState(CheckState state)
199 {
200 SkASSERT((unsigned)state <= kUnknown_CheckState);
201
202 if (fCheckState != state)
203 {
204 this->onCheckStateChange(this->getCheckState(), state);
205 fCheckState = SkToU8(state);
206 }
207 }
208
onCheckStateChange(CheckState oldState,CheckState newState)209 /*virtual*/ void SkCheckButtonView::onCheckStateChange(CheckState oldState, CheckState newState)
210 {
211 this->inval(nullptr);
212 }
213
onInflate(const SkDOM & dom,const SkDOM::Node * node)214 /*virtual*/ void SkCheckButtonView::onInflate(const SkDOM& dom, const SkDOM::Node* node)
215 {
216 this->INHERITED::onInflate(dom, node);
217
218 int index = dom.findList(node, "check-state", "off,on,unknown");
219 if (index >= 0)
220 this->setCheckState((CheckState)index);
221 }
222
223 static const char gCheckStateSlotName[] = "sk-checkbutton-check-slot";
224
onPrepareWidgetEvent(SkEvent * evt)225 /*virtual*/ bool SkCheckButtonView::onPrepareWidgetEvent(SkEvent* evt)
226 {
227 // could check if we're "disabled", and return false...
228
229 evt->setS32(gCheckStateSlotName, this->getCheckState());
230 return true;
231 }
232
GetWidgetEventCheckState(const SkEvent & evt,CheckState * state)233 bool SkCheckButtonView::GetWidgetEventCheckState(const SkEvent& evt, CheckState* state)
234 {
235 int32_t state32;
236
237 if (evt.findS32(gCheckStateSlotName, &state32))
238 {
239 if (state)
240 *state = (CheckState)state32;
241 return true;
242 }
243 return false;
244 }
245
246 ///////////////////////////////////////////////////////////////////////////////////////////////////
247 ///////////////////////////////////////////////////////////////////////////////////////////////////
248 ///////////////////////////////////////////////////////////////////////////////////////////////////
249
250 #include "SkTime.h"
251 #include <stdio.h>
252
253 class SkAnimButtonView : public SkButtonView {
254 public:
SkAnimButtonView()255 SkAnimButtonView()
256 {
257 fAnim.setHostEventSink(this);
258 init_skin_anim(kButton_SkinEnum, &fAnim);
259 }
260
261 protected:
onLabelChange(const char oldLabel[],const char newLabel[])262 virtual void onLabelChange(const char oldLabel[], const char newLabel[])
263 {
264 this->INHERITED::onLabelChange(oldLabel, newLabel);
265
266 SkEvent evt("user");
267 evt.setString("id", "setLabel");
268 evt.setString("LABEL", newLabel);
269 fAnim.doUserEvent(evt);
270 }
271
onFocusChange(bool gainFocus)272 virtual void onFocusChange(bool gainFocus)
273 {
274 this->INHERITED::onFocusChange(gainFocus);
275
276 SkEvent evt("user");
277 evt.setString("id", "setFocus");
278 evt.setS32("FOCUS", gainFocus);
279 fAnim.doUserEvent(evt);
280 }
281
onSizeChange()282 virtual void onSizeChange()
283 {
284 this->INHERITED::onSizeChange();
285
286 SkEvent evt("user");
287 evt.setString("id", "setDim");
288 evt.setScalar("dimX", this->width());
289 evt.setScalar("dimY", this->height());
290 fAnim.doUserEvent(evt);
291 }
292
onDraw(SkCanvas * canvas)293 virtual void onDraw(SkCanvas* canvas)
294 {
295 SkPaint paint;
296 SkAnimator::DifferenceType diff = fAnim.draw(canvas, &paint, SkTime::GetMSecs());
297
298 if (diff == SkAnimator::kDifferent)
299 this->inval(nullptr);
300 else if (diff == SkAnimator::kPartiallyDifferent)
301 {
302 SkRect bounds;
303 fAnim.getInvalBounds(&bounds);
304 this->inval(&bounds);
305 }
306 }
307
onEvent(const SkEvent & evt)308 virtual bool onEvent(const SkEvent& evt)
309 {
310 if (evt.isType(SK_EventType_Inval))
311 {
312 this->inval(nullptr);
313 return true;
314 }
315 if (evt.isType("recommendDim"))
316 {
317 SkScalar height;
318
319 if (evt.findScalar("y", &height))
320 this->setHeight(height);
321 return true;
322 }
323 return this->INHERITED::onEvent(evt);
324 }
325
onPrepareWidgetEvent(SkEvent * evt)326 virtual bool onPrepareWidgetEvent(SkEvent* evt)
327 {
328 if (this->INHERITED::onPrepareWidgetEvent(evt))
329 {
330 SkEvent e("user");
331 e.setString("id", "handlePress");
332 (void)fAnim.doUserEvent(e);
333 return true;
334 }
335 return false;
336 }
337
338 private:
339 SkAnimator fAnim;
340
341 typedef SkButtonView INHERITED;
342 };
343
344 ////////////////////////////////////////////////////////////////////////////////////////////
345 ////////////////////////////////////////////////////////////////////////////////////////////
346
SkWidgetFactory(const char name[])347 SkView* SkWidgetFactory(const char name[])
348 {
349 if (name == nullptr)
350 return nullptr;
351
352 // must be in the same order as the SkSkinWidgetEnum is declared
353 static const char* gNames[] = {
354 "sk-border",
355 "sk-button",
356 "sk-image",
357 "sk-list",
358 "sk-progress",
359 "sk-scroll",
360 "sk-text"
361
362 };
363
364 for (size_t i = 0; i < SK_ARRAY_COUNT(gNames); i++)
365 if (!strcmp(gNames[i], name))
366 return SkWidgetFactory((SkWidgetEnum)i);
367
368 return nullptr;
369 }
370
371 #include "SkImageView.h"
372 #include "SkProgressBarView.h"
373 #include "SkScrollBarView.h"
374 #include "SkBorderView.h"
375
SkWidgetFactory(SkWidgetEnum sw)376 SkView* SkWidgetFactory(SkWidgetEnum sw)
377 {
378 switch (sw) {
379 case kBorder_WidgetEnum:
380 return new SkBorderView;
381 case kButton_WidgetEnum:
382 return new SkAnimButtonView;
383 case kImage_WidgetEnum:
384 return new SkImageView;
385 case kList_WidgetEnum:
386 return new SkListView;
387 case kProgress_WidgetEnum:
388 return new SkProgressBarView;
389 case kScroll_WidgetEnum:
390 return new SkScrollBarView;
391 case kText_WidgetEnum:
392 return new SkStaticTextView;
393 default:
394 SkDEBUGFAIL("unknown enum passed to SkWidgetFactory");
395 break;
396 }
397 return nullptr;
398 }
399