2 * Copyright (C) 2012 Google Inc. All rights reserved.
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26 #include "web/WebPluginScrollbarImpl.h"
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"
44 using namespace blink;
48 WebPluginScrollbar* WebPluginScrollbar::createForPlugin(Orientation orientation,
49 WebPluginContainer* pluginContainer,
50 WebPluginScrollbarClient* client)
52 WebPluginContainerImpl* plugin = toWebPluginContainerImpl(pluginContainer);
53 return new WebPluginScrollbarImpl(orientation, plugin->scrollbarGroup(), client);
56 int WebPluginScrollbar::defaultThickness()
58 return ScrollbarTheme::theme()->scrollbarThickness();
61 WebPluginScrollbarImpl::WebPluginScrollbarImpl(Orientation orientation,
62 ScrollbarGroup* group,
63 WebPluginScrollbarClient* client)
68 m_scrollbar = Scrollbar::create(
69 static_cast<ScrollableArea*>(m_group),
70 static_cast<blink::ScrollbarOrientation>(orientation),
71 blink::RegularScrollbar);
72 m_group->scrollbarCreated(this);
75 WebPluginScrollbarImpl::~WebPluginScrollbarImpl()
77 m_group->scrollbarDestroyed(this);
80 void WebPluginScrollbarImpl::setScrollOffset(int scrollOffset)
82 m_scrollOffset = scrollOffset;
83 m_client->valueChanged(this);
86 void WebPluginScrollbarImpl::invalidateScrollbarRect(const IntRect& rect)
88 WebRect webrect(rect);
89 webrect.x += m_scrollbar->x();
90 webrect.y += m_scrollbar->y();
91 m_client->invalidateScrollbarRect(this, webrect);
94 void WebPluginScrollbarImpl::getTickmarks(Vector<IntRect>& tickmarks) const
96 WebVector<WebRect> ticks;
97 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &ticks);
98 tickmarks.resize(ticks.size());
99 for (size_t i = 0; i < ticks.size(); ++i)
100 tickmarks[i] = ticks[i];
103 IntPoint WebPluginScrollbarImpl::convertFromContainingViewToScrollbar(const IntPoint& parentPoint) const
105 IntPoint offset(parentPoint.x() - m_scrollbar->x(), parentPoint.y() - m_scrollbar->y());
106 return m_scrollbar->Widget::convertFromContainingView(offset);
109 void WebPluginScrollbarImpl::scrollbarStyleChanged()
111 m_client->overlayChanged(this);
114 bool WebPluginScrollbarImpl::isOverlay() const
116 return m_scrollbar->isOverlayScrollbar();
119 int WebPluginScrollbarImpl::value() const
121 return m_scrollOffset;
124 WebPoint WebPluginScrollbarImpl::location() const
126 return m_scrollbar->frameRect().location();
129 WebSize WebPluginScrollbarImpl::size() const
131 return m_scrollbar->frameRect().size();
134 bool WebPluginScrollbarImpl::enabled() const
136 return m_scrollbar->enabled();
139 int WebPluginScrollbarImpl::maximum() const
141 return m_scrollbar->maximum();
144 int WebPluginScrollbarImpl::totalSize() const
146 return m_scrollbar->totalSize();
149 bool WebPluginScrollbarImpl::isScrollViewScrollbar() const
151 return m_scrollbar->isScrollViewScrollbar();
154 bool WebPluginScrollbarImpl::isScrollableAreaActive() const
156 return m_scrollbar->isScrollableAreaActive();
159 void WebPluginScrollbarImpl::getTickmarks(WebVector<WebRect>& tickmarks) const
161 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &tickmarks);
164 WebScrollbar::ScrollbarControlSize WebPluginScrollbarImpl::controlSize() const
166 return static_cast<WebScrollbar::ScrollbarControlSize>(m_scrollbar->controlSize());
169 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::pressedPart() const
171 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->pressedPart());
174 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::hoveredPart() const
176 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->hoveredPart());
179 WebScrollbar::ScrollbarOverlayStyle WebPluginScrollbarImpl::scrollbarOverlayStyle() const
181 return static_cast<WebScrollbar::ScrollbarOverlayStyle>(m_scrollbar->scrollbarOverlayStyle());
184 WebScrollbar::Orientation WebPluginScrollbarImpl::orientation() const
186 if (m_scrollbar->orientation() == blink::HorizontalScrollbar)
187 return WebScrollbar::Horizontal;
188 return WebScrollbar::Vertical;
191 bool WebPluginScrollbarImpl::isLeftSideVerticalScrollbar() const
196 bool WebPluginScrollbarImpl::isCustomScrollbar() const
198 return m_scrollbar->isCustomScrollbar();
201 void WebPluginScrollbarImpl::setLocation(const WebRect& rect)
203 IntRect oldRect = m_scrollbar->frameRect();
204 m_scrollbar->setFrameRect(rect);
205 if (WebRect(oldRect) != rect)
206 m_scrollbar->invalidate();
208 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar->width() : m_scrollbar->height();
209 m_scrollbar->setEnabled(m_scrollbar->totalSize() > length);
210 m_scrollbar->setProportion(length, m_scrollbar->totalSize());
213 void WebPluginScrollbarImpl::setValue(int position)
215 m_group->scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), static_cast<float>(position));
218 void WebPluginScrollbarImpl::setDocumentSize(int size)
220 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar->width() : m_scrollbar->height();
221 m_scrollbar->setEnabled(size > length);
222 m_scrollbar->setProportion(length, size);
225 void WebPluginScrollbarImpl::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier)
227 blink::ScrollDirection dir;
228 bool horizontal = m_scrollbar->orientation() == HorizontalScrollbar;
229 if (direction == ScrollForward)
230 dir = horizontal ? ScrollRight : ScrollDown;
232 dir = horizontal ? ScrollLeft : ScrollUp;
234 m_group->scroll(dir, static_cast<blink::ScrollGranularity>(granularity), multiplier);
237 void WebPluginScrollbarImpl::paint(WebCanvas* canvas, const WebRect& rect)
239 GraphicsContext context(canvas);
240 m_scrollbar->paint(&context, rect);
243 bool WebPluginScrollbarImpl::handleInputEvent(const WebInputEvent& event)
245 switch (event.type) {
246 case WebInputEvent::MouseDown:
247 return onMouseDown(event);
248 case WebInputEvent::MouseUp:
249 return onMouseUp(event);
250 case WebInputEvent::MouseMove:
251 return onMouseMove(event);
252 case WebInputEvent::MouseLeave:
253 return onMouseLeave(event);
254 case WebInputEvent::MouseWheel:
255 return onMouseWheel(event);
256 case WebInputEvent::KeyDown:
257 return onKeyDown(event);
258 case WebInputEvent::Undefined:
259 case WebInputEvent::MouseEnter:
260 case WebInputEvent::RawKeyDown:
261 case WebInputEvent::KeyUp:
262 case WebInputEvent::Char:
263 case WebInputEvent::TouchStart:
264 case WebInputEvent::TouchMove:
265 case WebInputEvent::TouchEnd:
266 case WebInputEvent::TouchCancel:
273 bool WebPluginScrollbarImpl::isAlphaLocked() const
275 return m_scrollbar->isAlphaLocked();
278 void WebPluginScrollbarImpl::setIsAlphaLocked(bool flag)
280 return m_scrollbar->setIsAlphaLocked(flag);
283 bool WebPluginScrollbarImpl::onMouseDown(const WebInputEvent& event)
285 WebMouseEvent mousedown = static_cast<const WebMouseEvent&>(event);
286 if (!m_scrollbar->frameRect().contains(mousedown.x, mousedown.y))
289 mousedown.x -= m_scrollbar->x();
290 mousedown.y -= m_scrollbar->y();
291 m_scrollbar->mouseDown(PlatformMouseEventBuilder(m_scrollbar.get(), mousedown));
295 bool WebPluginScrollbarImpl::onMouseUp(const WebInputEvent& event)
297 WebMouseEvent mouseup = static_cast<const WebMouseEvent&>(event);
298 if (m_scrollbar->pressedPart() == blink::NoPart)
301 m_scrollbar->mouseUp(PlatformMouseEventBuilder(m_scrollbar.get(), mouseup));
305 bool WebPluginScrollbarImpl::onMouseMove(const WebInputEvent& event)
307 WebMouseEvent mousemove = static_cast<const WebMouseEvent&>(event);
308 if (m_scrollbar->frameRect().contains(mousemove.x, mousemove.y)
309 || m_scrollbar->pressedPart() != blink::NoPart) {
310 mousemove.x -= m_scrollbar->x();
311 mousemove.y -= m_scrollbar->y();
312 m_scrollbar->mouseMoved(PlatformMouseEventBuilder(m_scrollbar.get(), mousemove));
316 if (m_scrollbar->hoveredPart() != blink::NoPart && !m_scrollbar->isOverlayScrollbar())
317 m_scrollbar->mouseExited();
321 bool WebPluginScrollbarImpl::onMouseLeave(const WebInputEvent& event)
323 if (m_scrollbar->hoveredPart() != blink::NoPart)
324 m_scrollbar->mouseExited();
329 bool WebPluginScrollbarImpl::onMouseWheel(const WebInputEvent& event)
331 WebMouseWheelEvent mousewheel = static_cast<const WebMouseWheelEvent&>(event);
332 PlatformWheelEventBuilder platformEvent(m_scrollbar.get(), mousewheel);
333 return m_group->handleWheelEvent(platformEvent);
336 bool WebPluginScrollbarImpl::onKeyDown(const WebInputEvent& event)
338 WebKeyboardEvent keyboard = static_cast<const WebKeyboardEvent&>(event);
340 // We have to duplicate this logic from WebViewImpl because there it uses
341 // Char and RawKeyDown events, which don't exist at this point.
342 if (keyboard.windowsKeyCode == VKEY_SPACE)
343 keyCode = ((keyboard.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR : VKEY_NEXT);
345 if (keyboard.modifiers == WebInputEvent::ControlKey) {
346 // Match FF behavior in the sense that Ctrl+home/end are the only Ctrl
347 // key combinations which affect scrolling. Safari is buggy in the
348 // sense that it scrolls the page for all Ctrl+scrolling key
349 // combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc.
350 switch (keyboard.windowsKeyCode) {
359 if (keyboard.isSystemKey || (keyboard.modifiers & WebInputEvent::ShiftKey))
362 keyCode = keyboard.windowsKeyCode;
364 blink::ScrollDirection scrollDirection;
365 blink::ScrollGranularity scrollGranularity;
366 if (WebViewImpl::mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranularity)) {
367 // Will return false if scroll direction wasn't compatible with this scrollbar.
368 return m_group->scroll(scrollDirection, scrollGranularity);