ScrollViewAndroid.cpp revision 4465d348a977f9f062b28957709a77613311647a
18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright 2007, The Android Open Source Project 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * * Redistributions of source code must retain the above copyright 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#define LOG_TAG "WebCore" 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "ScrollView.h" 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FloatRect.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FrameView.h" 328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "IntRect.h" 33025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark#include "SkRegion.h" 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "WebCoreFrameBridge.h" 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "WebCoreViewBridge.h" 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "WebViewCore.h" 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project This class implementation does NOT actually emulate the Qt ScrollView. 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project It does provide an implementation that khtml will use to interact with 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project WebKit's WebFrameView documentView and our NSScrollView subclass. 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project ScrollView's view is a NSScrollView (or subclass of NSScrollView) 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project in most cases. That scrollview is a subview of an 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project WebCoreFrameView. The WebCoreFrameView's documentView will also be 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project the scroll view's documentView. 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project The WebCoreFrameView's size is the frame size. The WebCoreFrameView's documentView 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project corresponds to the frame content size. The scrollview itself is autosized to the 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project WebCoreFrameView's size (see Widget::resize). 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project*/ 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectIntRect ScrollView::platformVisibleContentRect(bool includeScrollbars) const 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project IntRect rect = platformWidget()->getBounds(); 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // This makes subframes draw correctly, since subframes cannot scroll. 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (parent()) 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return IntRect(0, 0, rect.width(), rect.height()); 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return rect; 628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectIntSize ScrollView::platformContentsSize() const 658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return m_contentsSize; 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid ScrollView::platformSetScrollPosition(const WebCore::IntPoint& pt) 708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 710bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch if (parent()) // don't attempt to scroll subframes; they're fully visible 728e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return; 730bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch android::WebViewCore::getWebViewCore(this)->scrollTo(pt.x(), pt.y()); 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid ScrollView::platformScrollbarModes(ScrollbarMode& h, ScrollbarMode& v) const 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project h = v = ScrollbarAlwaysOff; 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectbool ScrollView::platformProhibitsScrolling() 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (!isFrameView()) 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return false; 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FrameView* view = static_cast<FrameView*>(this); 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // We want to ignore requests to scroll that were not initiated by the user. An 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // example of this is when text is inserted into a textfield/area, which results in 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // a scroll. We ignore this because we now how to do this ourselves in the UI thread. 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // An example of it being initiated by the user is if the user clicks an anchor 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // element which simply scrolls the page. 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return !android::WebFrame::getWebFrame(view->frame())->userInitiatedClick(); 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid ScrollView::platformRepaintContentRectangle(const IntRect &rect, bool now) 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project android::WebViewCore::getWebViewCore(this)->contentInvalidate(rect); 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifdef ANDROID_CAPTURE_OFFSCREEN_PAINTS 1004465d348a977f9f062b28957709a77613311647aAndrei Popescu// Compute the offscreen parts of the drawn rectangle by subtracting 1014465d348a977f9f062b28957709a77613311647aAndrei Popescu// vis from rect. This can compute up to four rectangular slices. 1024465d348a977f9f062b28957709a77613311647aAndrei Popescuvoid ScrollView::platformOffscreenContentRectangle(const IntRect& vis, const IntRect& rect) 1038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 104025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark SkRegion rectRgn = SkRegion(rect); 105025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark rectRgn.op(vis, SkRegion::kDifference_Op); 106025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark SkRegion::Iterator iter(rectRgn); 107025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark for (; !iter.done(); iter.next()) { 108025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark const SkIRect& diff = iter.rect(); 109025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark android::WebViewCore::getWebViewCore(this)->offInvalidate(diff); 110025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark } 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1140bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch} // namespace WebCore 115