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"
45 using namespace WebCore;
49 WebPluginScrollbar* WebPluginScrollbar::createForPlugin(Orientation orientation,
50 WebPluginContainer* pluginContainer,
51 WebPluginScrollbarClient* client)
53 WebPluginContainerImpl* plugin = toWebPluginContainerImpl(pluginContainer);
54 return new WebPluginScrollbarImpl(orientation, plugin->scrollbarGroup(), client);
57 int WebPluginScrollbar::defaultThickness()
59 return ScrollbarTheme::theme()->scrollbarThickness();
62 WebPluginScrollbarImpl::WebPluginScrollbarImpl(Orientation orientation,
63 ScrollbarGroup* group,
64 WebPluginScrollbarClient* client)
69 m_scrollbar = Scrollbar::create(
70 static_cast<ScrollableArea*>(m_group),
71 static_cast<WebCore::ScrollbarOrientation>(orientation),
72 WebCore::RegularScrollbar);
73 m_group->scrollbarCreated(this);
76 WebPluginScrollbarImpl::~WebPluginScrollbarImpl()
78 m_group->scrollbarDestroyed(this);
81 void WebPluginScrollbarImpl::setScrollOffset(int scrollOffset)
83 m_scrollOffset = scrollOffset;
84 m_client->valueChanged(this);
87 void WebPluginScrollbarImpl::invalidateScrollbarRect(const IntRect& rect)
89 WebRect webrect(rect);
90 webrect.x += m_scrollbar->x();
91 webrect.y += m_scrollbar->y();
92 m_client->invalidateScrollbarRect(this, webrect);
95 void WebPluginScrollbarImpl::getTickmarks(Vector<IntRect>& tickmarks) const
97 WebVector<WebRect> ticks;
98 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &ticks);
99 tickmarks.resize(ticks.size());
100 for (size_t i = 0; i < ticks.size(); ++i)
101 tickmarks[i] = ticks[i];
104 IntPoint WebPluginScrollbarImpl::convertFromContainingViewToScrollbar(const IntPoint& parentPoint) const
106 IntPoint offset(parentPoint.x() - m_scrollbar->x(), parentPoint.y() - m_scrollbar->y());
107 return m_scrollbar->Widget::convertFromContainingView(offset);
110 void WebPluginScrollbarImpl::scrollbarStyleChanged()
112 m_client->overlayChanged(this);
115 bool WebPluginScrollbarImpl::isOverlay() const
117 return m_scrollbar->isOverlayScrollbar();
120 int WebPluginScrollbarImpl::value() const
122 return m_scrollOffset;
125 WebPoint WebPluginScrollbarImpl::location() const
127 return m_scrollbar->frameRect().location();
130 WebSize WebPluginScrollbarImpl::size() const
132 return m_scrollbar->frameRect().size();
135 bool WebPluginScrollbarImpl::enabled() const
137 return m_scrollbar->enabled();
140 int WebPluginScrollbarImpl::maximum() const
142 return m_scrollbar->maximum();
145 int WebPluginScrollbarImpl::totalSize() const
147 return m_scrollbar->totalSize();
150 bool WebPluginScrollbarImpl::isScrollViewScrollbar() const
152 return m_scrollbar->isScrollViewScrollbar();
155 bool WebPluginScrollbarImpl::isScrollableAreaActive() const
157 return m_scrollbar->isScrollableAreaActive();
160 void WebPluginScrollbarImpl::getTickmarks(WebVector<WebRect>& tickmarks) const
162 m_client->getTickmarks(const_cast<WebPluginScrollbarImpl*>(this), &tickmarks);
165 WebScrollbar::ScrollbarControlSize WebPluginScrollbarImpl::controlSize() const
167 return static_cast<WebScrollbar::ScrollbarControlSize>(m_scrollbar->controlSize());
170 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::pressedPart() const
172 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->pressedPart());
175 WebScrollbar::ScrollbarPart WebPluginScrollbarImpl::hoveredPart() const
177 return static_cast<WebScrollbar::ScrollbarPart>(m_scrollbar->hoveredPart());
180 WebScrollbar::ScrollbarOverlayStyle WebPluginScrollbarImpl::scrollbarOverlayStyle() const
182 return static_cast<WebScrollbar::ScrollbarOverlayStyle>(m_scrollbar->scrollbarOverlayStyle());
185 WebScrollbar::Orientation WebPluginScrollbarImpl::orientation() const
187 if (m_scrollbar->orientation() == WebCore::HorizontalScrollbar)
188 return WebScrollbar::Horizontal;
189 return WebScrollbar::Vertical;
192 bool WebPluginScrollbarImpl::isLeftSideVerticalScrollbar() const
197 bool WebPluginScrollbarImpl::isCustomScrollbar() const
199 return m_scrollbar->isCustomScrollbar();
202 void WebPluginScrollbarImpl::setLocation(const WebRect& rect)
204 IntRect oldRect = m_scrollbar->frameRect();
205 m_scrollbar->setFrameRect(rect);
206 if (WebRect(oldRect) != rect)
207 m_scrollbar->invalidate();
209 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar->width() : m_scrollbar->height();
210 m_scrollbar->setEnabled(m_scrollbar->totalSize() > length);
211 m_scrollbar->setProportion(length, m_scrollbar->totalSize());
214 void WebPluginScrollbarImpl::setValue(int position)
216 m_group->scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), static_cast<float>(position));
219 void WebPluginScrollbarImpl::setDocumentSize(int size)
221 int length = m_scrollbar->orientation() == HorizontalScrollbar ? m_scrollbar->width() : m_scrollbar->height();
222 m_scrollbar->setEnabled(size > length);
223 m_scrollbar->setProportion(length, size);
226 void WebPluginScrollbarImpl::scroll(ScrollDirection direction, ScrollGranularity granularity, float multiplier)
228 WebCore::ScrollDirection dir;
229 bool horizontal = m_scrollbar->orientation() == HorizontalScrollbar;
230 if (direction == ScrollForward)
231 dir = horizontal ? ScrollRight : ScrollDown;
233 dir = horizontal ? ScrollLeft : ScrollUp;
235 m_group->scroll(dir, static_cast<WebCore::ScrollGranularity>(granularity), multiplier);
238 void WebPluginScrollbarImpl::paint(WebCanvas* canvas, const WebRect& rect)
240 GraphicsContext context(canvas);
241 m_scrollbar->paint(&context, rect);
244 bool WebPluginScrollbarImpl::handleInputEvent(const WebInputEvent& event)
246 switch (event.type) {
247 case WebInputEvent::MouseDown:
248 return onMouseDown(event);
249 case WebInputEvent::MouseUp:
250 return onMouseUp(event);
251 case WebInputEvent::MouseMove:
252 return onMouseMove(event);
253 case WebInputEvent::MouseLeave:
254 return onMouseLeave(event);
255 case WebInputEvent::MouseWheel:
256 return onMouseWheel(event);
257 case WebInputEvent::KeyDown:
258 return onKeyDown(event);
259 case WebInputEvent::Undefined:
260 case WebInputEvent::MouseEnter:
261 case WebInputEvent::RawKeyDown:
262 case WebInputEvent::KeyUp:
263 case WebInputEvent::Char:
264 case WebInputEvent::TouchStart:
265 case WebInputEvent::TouchMove:
266 case WebInputEvent::TouchEnd:
267 case WebInputEvent::TouchCancel:
274 bool WebPluginScrollbarImpl::isAlphaLocked() const
276 return m_scrollbar->isAlphaLocked();
279 void WebPluginScrollbarImpl::setIsAlphaLocked(bool flag)
281 return m_scrollbar->setIsAlphaLocked(flag);
284 bool WebPluginScrollbarImpl::onMouseDown(const WebInputEvent& event)
286 WebMouseEvent mousedown = *static_cast<const WebMouseEvent*>(&event);
287 if (!m_scrollbar->frameRect().contains(mousedown.x, mousedown.y))
290 mousedown.x -= m_scrollbar->x();
291 mousedown.y -= m_scrollbar->y();
292 m_scrollbar->mouseDown(PlatformMouseEventBuilder(m_scrollbar.get(), mousedown));
296 bool WebPluginScrollbarImpl::onMouseUp(const WebInputEvent& event)
298 WebMouseEvent mouseup = *static_cast<const WebMouseEvent*>(&event);
299 if (m_scrollbar->pressedPart() == WebCore::NoPart)
302 m_scrollbar->mouseUp(PlatformMouseEventBuilder(m_scrollbar.get(), mouseup));
306 bool WebPluginScrollbarImpl::onMouseMove(const WebInputEvent& event)
308 WebMouseEvent mousemove = *static_cast<const WebMouseEvent*>(&event);
309 if (m_scrollbar->frameRect().contains(mousemove.x, mousemove.y)
310 || m_scrollbar->pressedPart() != WebCore::NoPart) {
311 mousemove.x -= m_scrollbar->x();
312 mousemove.y -= m_scrollbar->y();
313 m_scrollbar->mouseMoved(PlatformMouseEventBuilder(m_scrollbar.get(), mousemove));
317 if (m_scrollbar->hoveredPart() != WebCore::NoPart && !m_scrollbar->isOverlayScrollbar())
318 m_scrollbar->mouseExited();
322 bool WebPluginScrollbarImpl::onMouseLeave(const WebInputEvent& event)
324 if (m_scrollbar->hoveredPart() != WebCore::NoPart)
325 m_scrollbar->mouseExited();
330 bool WebPluginScrollbarImpl::onMouseWheel(const WebInputEvent& event)
332 WebMouseWheelEvent mousewheel = *static_cast<const WebMouseWheelEvent*>(&event);
333 PlatformWheelEventBuilder platformEvent(m_scrollbar.get(), mousewheel);
334 return m_group->handleWheelEvent(platformEvent);
337 bool WebPluginScrollbarImpl::onKeyDown(const WebInputEvent& event)
339 WebKeyboardEvent keyboard = *static_cast<const WebKeyboardEvent*>(&event);
341 // We have to duplicate this logic from WebViewImpl because there it uses
342 // Char and RawKeyDown events, which don't exist at this point.
343 if (keyboard.windowsKeyCode == VKEY_SPACE)
344 keyCode = ((keyboard.modifiers & WebInputEvent::ShiftKey) ? VKEY_PRIOR : VKEY_NEXT);
346 if (keyboard.modifiers == WebInputEvent::ControlKey) {
347 // Match FF behavior in the sense that Ctrl+home/end are the only Ctrl
348 // key combinations which affect scrolling. Safari is buggy in the
349 // sense that it scrolls the page for all Ctrl+scrolling key
350 // combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc.
351 switch (keyboard.windowsKeyCode) {
360 if (keyboard.isSystemKey || (keyboard.modifiers & WebInputEvent::ShiftKey))
363 keyCode = keyboard.windowsKeyCode;
365 WebCore::ScrollDirection scrollDirection;
366 WebCore::ScrollGranularity scrollGranularity;
367 if (WebViewImpl::mapKeyCodeForScroll(keyCode, &scrollDirection, &scrollGranularity)) {
368 // Will return false if scroll direction wasn't compatible with this scrollbar.
369 return m_group->scroll(scrollDirection, scrollGranularity);