ScrollViewAndroid.cpp revision 163705a9d305337a58133a58c0d0e9686b4af589
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" 33163705a9d305337a58133a58c0d0e9686b4af589Leon Scroggins III#include "PlatformBridge.h" 34025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark#include "SkRegion.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; 73f116b073399a3c3f644d6e6aeb2521ef9d2c9e9bLeon Scroggins III if (isFrameView() && !PlatformBridge::canScroll(static_cast<FrameView*>(this))) 74f116b073399a3c3f644d6e6aeb2521ef9d2c9e9bLeon Scroggins III return; 750bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch android::WebViewCore::getWebViewCore(this)->scrollTo(pt.x(), pt.y()); 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 7822804c073ffc06fd1fc520d1afbad71e353e488dGrace Klobavoid ScrollView::platformSetScrollbarModes() 7922804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba{ 8022804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba if (parent()) // no scrollbar for the subframes 8122804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba return; 8222804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba android::WebViewCore::getWebViewCore(this)->setScrollbarModes(m_horizontalScrollbarMode, m_verticalScrollbarMode); 8322804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba} 8422804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid ScrollView::platformScrollbarModes(ScrollbarMode& h, ScrollbarMode& v) const 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 8722804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba // m_horizontalScrollbarMode and m_verticalScrollbarMode are set in ScrollView::setScrollbarModes() 8822804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba h = m_horizontalScrollbarMode; 8922804c073ffc06fd1fc520d1afbad71e353e488dGrace Kloba v = m_verticalScrollbarMode; 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid ScrollView::platformRepaintContentRectangle(const IntRect &rect, bool now) 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project android::WebViewCore::getWebViewCore(this)->contentInvalidate(rect); 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#ifdef ANDROID_CAPTURE_OFFSCREEN_PAINTS 984465d348a977f9f062b28957709a77613311647aAndrei Popescu// Compute the offscreen parts of the drawn rectangle by subtracting 994465d348a977f9f062b28957709a77613311647aAndrei Popescu// vis from rect. This can compute up to four rectangular slices. 1004465d348a977f9f062b28957709a77613311647aAndrei Popescuvoid ScrollView::platformOffscreenContentRectangle(const IntRect& vis, const IntRect& rect) 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 102330e608aa0a04d09cbb92a754420c115fb16d993Cary Clark android::WebViewCore* core = android::WebViewCore::getWebViewCore(this); 103330e608aa0a04d09cbb92a754420c115fb16d993Cary Clark if (!core) // SVG does not instantiate webviewcore 104330e608aa0a04d09cbb92a754420c115fb16d993Cary Clark return; // and doesn't need to record drawing offscreen 105025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark SkRegion rectRgn = SkRegion(rect); 106025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark rectRgn.op(vis, SkRegion::kDifference_Op); 107025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark SkRegion::Iterator iter(rectRgn); 108025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark for (; !iter.done(); iter.next()) { 109025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark const SkIRect& diff = iter.rect(); 110330e608aa0a04d09cbb92a754420c115fb16d993Cary Clark core->offInvalidate(diff); 111025ac4e283bb4b48f580d48541224e3996dc6f84Cary Clark } 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#endif 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1150bf48ef3be53ddaa52bbead65dfd75bf90e7a2b5Ben Murdoch} // namespace WebCore 116