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1 /* | |
2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
3 * | |
4 * Redistribution and use in source and binary forms, with or without | |
5 * modification, are permitted provided that the following conditions | |
6 * are met: | |
7 * 1. Redistributions of source code must retain the above copyright | |
8 * notice, this list of conditions and the following disclaimer. | |
9 * 2. Redistributions in binary form must reproduce the above copyright | |
10 * notice, this list of conditions and the following disclaimer in the | |
11 * documentation and/or other materials provided with the distribution. | |
12 * | |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN
Y | |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN
Y | |
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O
N | |
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
23 */ | |
24 | |
25 #include "config.h" | |
26 #include "web/WebPluginScrollbarImpl.h" | |
27 | |
28 #include "platform/KeyboardCodes.h" | |
29 #include "platform/graphics/GraphicsContext.h" | |
30 #include "platform/scroll/ScrollAnimator.h" | |
31 #include "platform/scroll/ScrollTypes.h" | |
32 #include "platform/scroll/Scrollbar.h" | |
33 #include "platform/scroll/ScrollbarTheme.h" | |
34 #include "public/platform/WebCanvas.h" | |
35 #include "public/platform/WebRect.h" | |
36 #include "public/platform/WebVector.h" | |
37 #include "public/web/WebInputEvent.h" | |
38 #include "public/web/WebPluginScrollbarClient.h" | |
39 #include "web/ScrollbarGroup.h" | |
40 #include "web/WebInputEventConversion.h" | |
41 #include "web/WebPluginContainerImpl.h" | |
42 #include "web/WebViewImpl.h" | |
43 | |
44 namespace blink { | |
45 | |
46 WebPluginScrollbar* WebPluginScrollbar::createForPlugin(Orientation orientation, | |
47 WebPluginContainer* plug
inContainer, | |
48 WebPluginScrollbarClient
* client) | |
49 { | |
50 WebPluginContainerImpl* plugin = toWebPluginContainerImpl(pluginContainer); | |
51 return new WebPluginScrollbarImpl(orientation, plugin->scrollbarGroup(), cli
ent); | |
52 } | |
53 | |
54 int WebPluginScrollbar::defaultThickness() | |
55 { | |
56 return ScrollbarTheme::theme()->scrollbarThickness(); | |
57 } | |
58 | |
59 WebPluginScrollbarImpl::WebPluginScrollbarImpl(Orientation orientation, | |
60 ScrollbarGroup* group, | |
61 WebPluginScrollbarClient* client) | |
62 : m_group(group) | |
63 , m_client(client) | |
64 , m_scrollOffset(0) | |
65 { | |
66 m_scrollbar = Scrollbar::create( | |
67 static_cast<ScrollableArea*>(m_group), | |
68 static_cast<ScrollbarOrientation>(orientation), | |
69 blink::RegularScrollbar); | |
70 m_group->scrollbarCreated(this); | |
71 } | |
72 | |
73 WebPluginScrollbarImpl::~WebPluginScrollbarImpl() | |
74 { | |
75 m_group->scrollbarDestroyed(this); | |
76 } | |
77 | |
78 void WebPluginScrollbarImpl::setScrollOffset(int scrollOffset) | |
79 { | |
80 m_scrollOffset = scrollOffset; | |
81 m_client->valueChanged(this); | |
82 } | |
83 | |
84 void WebPluginScrollbarImpl::invalidateScrollbarRect(const IntRect& rect) | |
85 { | |
86 WebRect webrect(rect); | |
87 webrect.x += m_scrollbar->x(); | |
88 webrect.y += m_scrollbar->y(); | |
89 m_client->invalidateScrollbarRect(this, webrect); | |
90 } | |
91 | |
92 void WebPluginScrollbarImpl::getTickmarks(Vector<IntRect>& tickmarks) const | |
93 { | |
94 WebVector<WebRect> ticks; | |
95 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &ticks); | |
96 tickmarks.resize(ticks.size()); | |
97 for (size_t i = 0; i < ticks.size(); ++i) | |
98 tickmarks[i] = ticks[i]; | |
99 } | |
100 | |
101 IntPoint WebPluginScrollbarImpl::convertFromContainingViewToScrollbar(const IntP
oint& parentPoint) const | |
102 { | |
103 IntPoint offset(parentPoint.x() - m_scrollbar->x(), parentPoint.y() - m_scro
llbar->y()); | |
104 return m_scrollbar->Widget::convertFromContainingView(offset); | |
105 } | |
106 | |
107 void WebPluginScrollbarImpl::scrollbarStyleChanged() | |
108 { | |
109 m_client->overlayChanged(this); | |
110 } | |
111 | |
112 bool WebPluginScrollbarImpl::isOverlay() const | |
113 { | |
114 return m_scrollbar->isOverlayScrollbar(); | |
115 } | |
116 | |
117 int WebPluginScrollbarImpl::value() const | |
118 { | |
119 return m_scrollOffset; | |
120 } | |
121 | |
122 WebPoint WebPluginScrollbarImpl::location() const | |
123 { | |
124 return m_scrollbar->frameRect().location(); | |
125 } | |
126 | |
127 WebSize WebPluginScrollbarImpl::size() const | |
128 { | |
129 return m_scrollbar->frameRect().size(); | |
130 } | |
131 | |
132 bool WebPluginScrollbarImpl::enabled() const | |
133 { | |
134 return m_scrollbar->enabled(); | |
135 } | |
136 | |
137 int WebPluginScrollbarImpl::maximum() const | |
138 { | |
139 return m_scrollbar->maximum(); | |
140 } | |
141 | |
142 int WebPluginScrollbarImpl::totalSize() const | |
143 { | |
144 return m_scrollbar->totalSize(); | |
145 } | |
146 | |
147 bool WebPluginScrollbarImpl::isScrollableAreaActive() const | |
148 { | |
149 return m_scrollbar->isScrollableAreaActive(); | |
150 } | |
151 | |
152 void WebPluginScrollbarImpl::getTickmarks(WebVector<WebRect>& tickmarks) const | |
153 { | |
154 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &tickmarks
); | |
155 } | |
156 | |
157 WebScrollbar::ScrollbarControlSize WebPluginScrollbarImpl::controlSize() const | |
158 { | |
159 return static_cast<WebScrollbar::ScrollbarControlSize>(m_scrollbar->controlS
ize()); | |
160 } | |
161 | |
162 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::pressedPart() const | |
163 { | |
164 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->pressedPart()); | |
165 } | |
166 | |
167 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::hoveredPart() const | |
168 { | |
169 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->hoveredPart()); | |
170 } | |
171 | |
172 WebScrollbar::ScrollbarOverlayStyle WebPluginScrollbarImpl::scrollbarOverlayStyl
e() const | |
173 { | |
174 return static_cast<WebScrollbar::ScrollbarOverlayStyle>(m_scrollbar->scrollb
arOverlayStyle()); | |
175 } | |
176 | |
177 WebScrollbar::Orientation WebPluginScrollbarImpl::orientation() const | |
178 { | |
179 if (m_scrollbar->orientation() == HorizontalScrollbar) | |
180 return WebScrollbar::Horizontal; | |
181 return WebScrollbar::Vertical; | |
182 } | |
183 | |
184 bool WebPluginScrollbarImpl::isLeftSideVerticalScrollbar() const | |
185 { | |
186 return false; | |
187 } | |
188 | |
189 bool WebPluginScrollbarImpl::isCustomScrollbar() const | |
190 { | |
191 return m_scrollbar->isCustomScrollbar(); | |
192 } | |
193 | |
194 void WebPluginScrollbarImpl::setLocation(const WebRect& rect) | |
195 { | |
196 IntRect oldRect = m_scrollbar->frameRect(); | |
197 m_scrollbar->setFrameRect(rect); | |
198 if (WebRect(oldRect) != rect) | |
199 m_scrollbar->invalidate(); | |
200 | |
201 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar
->width() : m_scrollbar->height(); | |
202 m_scrollbar->setEnabled(m_scrollbar->totalSize() > length); | |
203 m_scrollbar->setProportion(length, m_scrollbar->totalSize()); | |
204 } | |
205 | |
206 void WebPluginScrollbarImpl::setValue(int position) | |
207 { | |
208 m_group->scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), static_c
ast<float>(position)); | |
209 } | |
210 | |
211 void WebPluginScrollbarImpl::setDocumentSize(int size) | |
212 { | |
213 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar
->width() : m_scrollbar->height(); | |
214 m_scrollbar->setEnabled(size > length); | |
215 m_scrollbar->setProportion(length, size); | |
216 } | |
217 | |
218 void WebPluginScrollbarImpl::scroll(ScrollDirection direction, ScrollGranularity
granularity, float multiplier) | |
219 { | |
220 blink::ScrollDirectionPhysical dir; | |
221 bool horizontal = m_scrollbar->orientation() == HorizontalScrollbar; | |
222 if (direction == ScrollForward) | |
223 dir = horizontal ? ScrollRight : ScrollDown; | |
224 else | |
225 dir = horizontal ? ScrollLeft : ScrollUp; | |
226 | |
227 m_group->scroll(dir, static_cast<blink::ScrollGranularity>(granularity), mul
tiplier); | |
228 } | |
229 | |
230 void WebPluginScrollbarImpl::paint(WebCanvas* canvas, const WebRect& rect) | |
231 { | |
232 OwnPtr<GraphicsContext> context = GraphicsContext::deprecatedCreateWithCanva
s(canvas); | |
233 m_scrollbar->paint(context.get(), rect); | |
234 } | |
235 | |
236 bool WebPluginScrollbarImpl::handleInputEvent(const WebInputEvent& event) | |
237 { | |
238 switch (event.type) { | |
239 case WebInputEvent::MouseDown: | |
240 return onMouseDown(event); | |
241 case WebInputEvent::MouseUp: | |
242 return onMouseUp(event); | |
243 case WebInputEvent::MouseMove: | |
244 return onMouseMove(event); | |
245 case WebInputEvent::MouseLeave: | |
246 return onMouseLeave(event); | |
247 case WebInputEvent::MouseWheel: | |
248 return onMouseWheel(event); | |
249 case WebInputEvent::KeyDown: | |
250 return onKeyDown(event); | |
251 case WebInputEvent::Undefined: | |
252 case WebInputEvent::MouseEnter: | |
253 case WebInputEvent::RawKeyDown: | |
254 case WebInputEvent::KeyUp: | |
255 case WebInputEvent::Char: | |
256 case WebInputEvent::TouchStart: | |
257 case WebInputEvent::TouchMove: | |
258 case WebInputEvent::TouchEnd: | |
259 case WebInputEvent::TouchCancel: | |
260 default: | |
261 break; | |
262 } | |
263 return false; | |
264 } | |
265 | |
266 bool WebPluginScrollbarImpl::isAlphaLocked() const | |
267 { | |
268 return m_scrollbar->isAlphaLocked(); | |
269 } | |
270 | |
271 void WebPluginScrollbarImpl::setIsAlphaLocked(bool flag) | |
272 { | |
273 return m_scrollbar->setIsAlphaLocked(flag); | |
274 } | |
275 | |
276 bool WebPluginScrollbarImpl::onMouseDown(const WebInputEvent& event) | |
277 { | |
278 WebMouseEvent mousedown = static_cast<const WebMouseEvent&>(event); | |
279 if (!m_scrollbar->frameRect().contains(mousedown.x, mousedown.y)) | |
280 return false; | |
281 | |
282 mousedown.x -= m_scrollbar->x(); | |
283 mousedown.y -= m_scrollbar->y(); | |
284 m_scrollbar->mouseDown(PlatformMouseEventBuilder(m_scrollbar.get(), mousedow
n)); | |
285 return true; | |
286 } | |
287 | |
288 bool WebPluginScrollbarImpl::onMouseUp(const WebInputEvent& event) | |
289 { | |
290 WebMouseEvent mouseup = static_cast<const WebMouseEvent&>(event); | |
291 if (m_scrollbar->pressedPart() == blink::NoPart) | |
292 return false; | |
293 | |
294 m_scrollbar->mouseUp(PlatformMouseEventBuilder(m_scrollbar.get(), mouseup)); | |
295 return true; | |
296 } | |
297 | |
298 bool WebPluginScrollbarImpl::onMouseMove(const WebInputEvent& event) | |
299 { | |
300 WebMouseEvent mousemove = static_cast<const WebMouseEvent&>(event); | |
301 if (m_scrollbar->frameRect().contains(mousemove.x, mousemove.y) | |
302 || m_scrollbar->pressedPart() != blink::NoPart) { | |
303 mousemove.x -= m_scrollbar->x(); | |
304 mousemove.y -= m_scrollbar->y(); | |
305 m_scrollbar->mouseMoved(PlatformMouseEventBuilder(m_scrollbar.get(), mou
semove)); | |
306 return true; | |
307 } | |
308 | |
309 if (m_scrollbar->hoveredPart() != blink::NoPart && !m_scrollbar->isOverlaySc
rollbar()) | |
310 m_scrollbar->mouseExited(); | |
311 return false; | |
312 } | |
313 | |
314 bool WebPluginScrollbarImpl::onMouseLeave(const WebInputEvent& event) | |
315 { | |
316 if (m_scrollbar->hoveredPart() != blink::NoPart) | |
317 m_scrollbar->mouseExited(); | |
318 | |
319 return false; | |
320 } | |
321 | |
322 bool WebPluginScrollbarImpl::onMouseWheel(const WebInputEvent& event) | |
323 { | |
324 WebMouseWheelEvent mousewheel = static_cast<const WebMouseWheelEvent&>(event
); | |
325 PlatformWheelEventBuilder platformEvent(m_scrollbar.get(), mousewheel); | |
326 return m_group->handleWheel(platformEvent).didScroll; | |
327 } | |
328 | |
329 bool WebPluginScrollbarImpl::onKeyDown(const WebInputEvent& event) | |
330 { | |
331 WebKeyboardEvent keyboard = static_cast<const WebKeyboardEvent&>(event); | |
332 int keyCode; | |
333 // We have to duplicate this logic from WebViewImpl because there it uses | |
334 // Char and RawKeyDown events, which don't exist at this point. | |
335 if (keyboard.windowsKeyCode == VKEY_SPACE) | |
336 keyCode = ((keyboard.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR :
VKEY_NEXT); | |
337 else { | |
338 if (keyboard.modifiers == WebInputEvent::ControlKey) { | |
339 // Match FF behavior in the sense that Ctrl+home/end are the only Ct
rl | |
340 // key combinations which affect scrolling. Safari is buggy in the | |
341 // sense that it scrolls the page for all Ctrl+scrolling key | |
342 // combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc. | |
343 switch (keyboard.windowsKeyCode) { | |
344 case VKEY_HOME: | |
345 case VKEY_END: | |
346 break; | |
347 default: | |
348 return false; | |
349 } | |
350 } | |
351 | |
352 if (keyboard.isSystemKey || (keyboard.modifiers & WebInputEvent::ShiftKe
y)) | |
353 return false; | |
354 | |
355 keyCode = keyboard.windowsKeyCode; | |
356 } | |
357 blink::ScrollDirectionPhysical scrollDirection; | |
358 blink::ScrollGranularity scrollGranularity; | |
359 if (WebViewImpl::mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranu
larity)) { | |
360 // Will return false if scroll direction wasn't compatible with this scr
ollbar. | |
361 return m_group->scroll(scrollDirection, scrollGranularity); | |
362 } | |
363 return false; | |
364 } | |
365 | |
366 float WebPluginScrollbarImpl::elasticOverscroll() const | |
367 { | |
368 return m_scrollbar->elasticOverscroll(); | |
369 } | |
370 | |
371 void WebPluginScrollbarImpl::setElasticOverscroll(float elasticOverscroll) | |
372 { | |
373 m_scrollbar->setElasticOverscroll(elasticOverscroll); | |
374 } | |
375 | |
376 } // namespace blink | |
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