third_party/WebKit/Source/web/PageWidgetDelegate.cpp

   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 are
   6  * met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *     * Redistributions in binary form must reproduce the above
  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
  14  *     * Neither the name of Google Inc. nor the names of its
  15  * contributors may be used to endorse or promote products derived from
  16  * this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "web/PageWidgetDelegate.h"
  33
  34 #include "core/frame/FrameView.h"
  35 #include "core/frame/LocalFrame.h"
  36 #include "core/input/EventHandler.h"
  37 #include "core/layout/LayoutView.h"
  38 #include "core/layout/compositing/DeprecatedPaintLayerCompositor.h"
  39 #include "core/page/AutoscrollController.h"
  40 #include "core/page/Page.h"
  41 #include "core/paint/TransformRecorder.h"
  42 #include "platform/Logging.h"
  43 #include "platform/graphics/GraphicsContext.h"
  44 #include "platform/graphics/paint/ClipRecorder.h"
  45 #include "platform/graphics/paint/DrawingRecorder.h"
  46 #include "platform/graphics/paint/SkPictureBuilder.h"
  47 #include "platform/transforms/AffineTransform.h"
  48 #include "public/web/WebInputEvent.h"
  49 #include "web/WebInputEventConversion.h"
  50 #include "wtf/CurrentTime.h"
  51
  52 namespace blink {
  53
  54 void PageWidgetDelegate::animate(Page& page, double monotonicFrameBeginTime, LocalFrame& root)
  55 {
  56     RefPtrWillBeRawPtr<FrameView> view = root.view();
  57     if (!view)
  58         return;
  59     page.autoscrollController().animate(monotonicFrameBeginTime);
  60     page.animator().serviceScriptedAnimations(monotonicFrameBeginTime);
  61 }
  62
  63 void PageWidgetDelegate::layout(Page& page, LocalFrame& root)
  64 {
  65     page.animator().updateLayoutAndStyleForPainting(&root);
  66 }
  67
  68 static void paintInternal(Page& page, WebCanvas* canvas,
  69     const WebRect& rect, LocalFrame& root, const GlobalPaintFlags globalPaintFlags)
  70 {
  71     if (rect.isEmpty())
  72         return;
  73
  74     IntRect intRect(rect);
  75     SkPictureBuilder pictureBuilder(intRect);
  76     {
  77         GraphicsContext& paintContext = pictureBuilder.context();
  78
  79         // FIXME: device scale factor settings are layering violations and should not
  80         // be used within Blink paint code.
  81         float scaleFactor = page.deviceScaleFactor();
  82         paintContext.setDeviceScaleFactor(scaleFactor);
  83
  84         AffineTransform scale;
  85         scale.scale(scaleFactor);
  86         TransformRecorder scaleRecorder(paintContext, root, scale);
  87
  88         IntRect dirtyRect(rect);
  89         FrameView* view = root.view();
  90         if (view) {
  91             ClipRecorder clipRecorder(paintContext, root, DisplayItem::PageWidgetDelegateClip, LayoutRect(dirtyRect));
  92
  93             view->paint(&paintContext, globalPaintFlags, dirtyRect);
  94         } else if (!DrawingRecorder::useCachedDrawingIfPossible(paintContext, root, DisplayItem::PageWidgetDelegateBackgroundFallback)) {
  95             DrawingRecorder drawingRecorder(paintContext, root, DisplayItem::PageWidgetDelegateBackgroundFallback, dirtyRect);
  96             paintContext.fillRect(dirtyRect, Color::white);
  97         }
  98     }
  99     pictureBuilder.endRecording()->playback(canvas);
 100 }
 101
 102 void PageWidgetDelegate::paint(Page& page, WebCanvas* canvas,
 103     const WebRect& rect, LocalFrame& root)
 104 {
 105     paintInternal(page, canvas, rect, root, GlobalPaintNormalPhase);
 106 }
 107
 108 void PageWidgetDelegate::paintIgnoringCompositing(Page& page, WebCanvas* canvas,
 109     const WebRect& rect, LocalFrame& root)
 110 {
 111     paintInternal(page, canvas, rect, root, GlobalPaintFlattenCompositingLayers);
 112 }
 113
 114 bool PageWidgetDelegate::handleInputEvent(PageWidgetEventHandler& handler, const WebInputEvent& event, LocalFrame* root)
 115 {
 116     switch (event.type) {
 117
 118     // FIXME: WebKit seems to always return false on mouse events processing
 119     // methods. For now we'll assume it has processed them (as we are only
 120     // interested in whether keyboard events are processed).
 121     // FIXME: Why do we return true when there is no root or the root is
 122     // detached?
 123     case WebInputEvent::MouseMove:
 124         if (!root || !root->view())
 125             return true;
 126         handler.handleMouseMove(*root, static_cast<const WebMouseEvent&>(event));
 127         return true;
 128     case WebInputEvent::MouseLeave:
 129         if (!root || !root->view())
 130             return true;
 131         handler.handleMouseLeave(*root, static_cast<const WebMouseEvent&>(event));
 132         return true;
 133     case WebInputEvent::MouseDown:
 134         if (!root || !root->view())
 135             return true;
 136         handler.handleMouseDown(*root, static_cast<const WebMouseEvent&>(event));
 137         return true;
 138     case WebInputEvent::MouseUp:
 139         if (!root || !root->view())
 140             return true;
 141         handler.handleMouseUp(*root, static_cast<const WebMouseEvent&>(event));
 142         return true;
 143
 144     case WebInputEvent::MouseWheel:
 145         if (!root || !root->view())
 146             return false;
 147         return handler.handleMouseWheel(*root, static_cast<const WebMouseWheelEvent&>(event));
 148
 149     case WebInputEvent::RawKeyDown:
 150     case WebInputEvent::KeyDown:
 151     case WebInputEvent::KeyUp:
 152         return handler.handleKeyEvent(static_cast<const WebKeyboardEvent&>(event));
 153
 154     case WebInputEvent::Char:
 155         return handler.handleCharEvent(static_cast<const WebKeyboardEvent&>(event));
 156     case WebInputEvent::GestureScrollBegin:
 157     case WebInputEvent::GestureScrollEnd:
 158     case WebInputEvent::GestureScrollUpdate:
 159     case WebInputEvent::GestureFlingStart:
 160     case WebInputEvent::GestureFlingCancel:
 161     case WebInputEvent::GestureTap:
 162     case WebInputEvent::GestureTapUnconfirmed:
 163     case WebInputEvent::GestureTapDown:
 164     case WebInputEvent::GestureShowPress:
 165     case WebInputEvent::GestureTapCancel:
 166     case WebInputEvent::GestureDoubleTap:
 167     case WebInputEvent::GestureTwoFingerTap:
 168     case WebInputEvent::GestureLongPress:
 169     case WebInputEvent::GestureLongTap:
 170         return handler.handleGestureEvent(static_cast<const WebGestureEvent&>(event));
 171
 172     case WebInputEvent::TouchStart:
 173     case WebInputEvent::TouchMove:
 174     case WebInputEvent::TouchEnd:
 175     case WebInputEvent::TouchCancel:
 176         if (!root || !root->view())
 177             return false;
 178         return handler.handleTouchEvent(*root, static_cast<const WebTouchEvent&>(event));
 179     case WebInputEvent::GesturePinchBegin:
 180     case WebInputEvent::GesturePinchEnd:
 181     case WebInputEvent::GesturePinchUpdate:
 182         // Touchscreen pinch events are currently not handled in main thread. Once they are,
 183         // these should be passed to |handleGestureEvent| similar to gesture scroll events.
 184         return false;
 185     default:
 186         return false;
 187     }
 188 }
 189
 190 // ----------------------------------------------------------------
 191 // Default handlers for PageWidgetEventHandler
 192
 193 void PageWidgetEventHandler::handleMouseMove(LocalFrame& mainFrame, const WebMouseEvent& event)
 194 {
 195     mainFrame.eventHandler().handleMouseMoveEvent(PlatformMouseEventBuilder(mainFrame.view(), event));
 196 }
 197
 198 void PageWidgetEventHandler::handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent& event)
 199 {
 200     mainFrame.eventHandler().handleMouseLeaveEvent(PlatformMouseEventBuilder(mainFrame.view(), event));
 201 }
 202
 203 void PageWidgetEventHandler::handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent& event)
 204 {
 205     mainFrame.eventHandler().handleMousePressEvent(PlatformMouseEventBuilder(mainFrame.view(), event));
 206 }
 207
 208 void PageWidgetEventHandler::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event)
 209 {
 210     mainFrame.eventHandler().handleMouseReleaseEvent(PlatformMouseEventBuilder(mainFrame.view(), event));
 211 }
 212
 213 bool PageWidgetEventHandler::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
 214 {
 215     return mainFrame.eventHandler().handleWheelEvent(PlatformWheelEventBuilder(mainFrame.view(), event));
 216 }
 217
 218 bool PageWidgetEventHandler::handleTouchEvent(LocalFrame& mainFrame, const WebTouchEvent& event)
 219 {
 220     return mainFrame.eventHandler().handleTouchEvent(PlatformTouchEventBuilder(mainFrame.view(), event));
 221 }
 222
 223 } // namespace blink