Source/WebKit2/UIProcess/API/efl/tizen/Pan.cpp

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include "config.h"
  21 #include "Pan.h"
  22
  23 #include "EwkViewImpl.h"
  24 #if ENABLE(TIZEN_CSS_OVERFLOW_SCROLL_ACCELERATION)
  25 #include "LayerTreeCoordinatorProxy.h"
  26 #endif
  27 #include "PageClientImpl.h"
  28 #include "WKAPICast.h"
  29 #include "WKPageTizen.h"
  30 #include "ewk_view_private.h"
  31
  32 using namespace WebCore;
  33 using namespace WebKit;
  34
  35 Pan::Pan(Evas_Object* ewkView)
  36     : m_ewkView(ewkView)
  37     , m_panAnimator(0)
  38     , m_lastPoint()
  39     , m_currentPoint()
  40 #if ENABLE(TIZEN_GESTURE_FEATURE)
  41     , m_smoothAlgorithm(SmoothAlgorithm::create())
  42 #endif
  43 {
  44     m_viewImpl = EwkViewImpl::fromEvasObject(m_ewkView);
  45 #if ENABLE(TIZEN_GESTURE_FEATURE)
  46     evas_object_event_callback_add(m_ewkView, EVAS_CALLBACK_MOUSE_DOWN, onMouseDown, this);
  47     evas_object_event_callback_add(m_ewkView, EVAS_CALLBACK_MOUSE_MOVE, onMouseMove, this);
  48 #endif
  49 }
  50
  51 Pan::~Pan()
  52 {
  53     if (m_panAnimator)
  54         ecore_animator_del(m_panAnimator);
  55 #if ENABLE(TIZEN_GESTURE_FEATURE)
  56     evas_object_event_callback_del(m_ewkView, EVAS_CALLBACK_MOUSE_DOWN, onMouseDown);
  57     evas_object_event_callback_del(m_ewkView, EVAS_CALLBACK_MOUSE_MOVE, onMouseMove);
  58 #endif
  59 }
  60
  61 void Pan::start(const IntPoint& point)
  62 {
  63     if (m_panAnimator)
  64         return;
  65
  66     PageClientImpl* pageClientImpl = ewkViewGetPageClient(m_ewkView);
  67     EINA_SAFETY_ON_NULL_RETURN(pageClientImpl);
  68
  69 #if ENABLE(TIZEN_CSS_OVERFLOW_SCROLL_ACCELERATION)
  70     pageClientImpl->findScrollableNode(point);
  71 #endif
  72
  73     ewkViewClearEdges(pageClientImpl->viewWidget());
  74     // Below statement means the update() was not called before start().
  75     if (m_lastPoint == IntPoint::zero())
  76         m_lastPoint = point;
  77     m_currentPoint = point;
  78
  79 #if ENABLE(TIZEN_GESTURE_FEATURE)
  80     m_smoothAlgorithm->initialize();
  81 #endif
  82     // Process pan directly when Pan is started for situation that Pan is delayed by TouchEvent.
  83     process();
  84     m_panAnimator = ecore_animator_add(panAnimatorCallback, this);
  85 }
  86
  87 void Pan::update(const IntPoint& point)
  88 {
  89     if (!m_panAnimator)
  90         m_lastPoint = m_currentPoint;
  91     m_currentPoint = point;
  92 }
  93
  94 void Pan::stop()
  95 {
  96     if (m_panAnimator) {
  97         ecore_animator_del(m_panAnimator);
  98         m_panAnimator = 0;
  99
 100 #if ENABLE(TIZEN_WEBKIT2_TEXT_SELECTION)
 101     PageClientImpl* pageClientImpl = ewkViewGetPageClient(m_ewkView);
 102     EINA_SAFETY_ON_NULL_RETURN(pageClientImpl);
 103     pageClientImpl->updateTextSelectionHandlesAndContextMenu(true);
 104 #endif
 105     }
 106     m_lastPoint = m_currentPoint = IntPoint::zero();
 107 }
 108
 109 Eina_Bool Pan::panAnimatorCallback(void* data)
 110 {
 111     static_cast<Pan*>(data)->process();
 112     return ECORE_CALLBACK_RENEW;
 113 }
 114
 115 void Pan::process()
 116 {
 117 #if ENABLE(TIZEN_GESTURE_FEATURE)
 118     m_smoothAlgorithm->correctPoint(m_currentPoint);
 119 #endif
 120     int deltaX = m_lastPoint.x() - m_currentPoint.x();
 121     int deltaY = m_lastPoint.y() - m_currentPoint.y();
 122
 123     PageClientImpl* pageClientImpl = ewkViewGetPageClient(m_ewkView);
 124     EINA_SAFETY_ON_NULL_RETURN(pageClientImpl);
 125
 126     if (!deltaX && !deltaY)
 127         return;
 128
 129     ewkViewSendScrollEvent(m_ewkView, deltaX, deltaY);
 130     if (ewk_view_horizontal_panning_hold_get(m_ewkView))
 131         deltaX = 0;
 132     if (ewk_view_vertical_panning_hold_get(m_ewkView))
 133         deltaY = 0;
 134
 135     // Get scrollPosition before scrolling.
 136     IntPoint scrollPosition = pageClientImpl->scrollPosition();
 137     if (WKPageScrollBy(toAPI(pageClientImpl->page()), toAPI(IntSize(deltaX, deltaY))))
 138         ewkViewSendEdgeEvent(pageClientImpl->viewWidget(), scrollPosition, deltaX, deltaY);
 139 #if ENABLE(TIZEN_WEBKIT2_TEXT_SELECTION)
 140     pageClientImpl->updateTextSelectionHandlesAndContextMenu(false, true);
 141 #endif
 142     m_lastPoint = m_currentPoint;
 143 }
 144
 145 #if ENABLE(TIZEN_GESTURE_FEATURE)
 146 void Pan::onMouseDown(void* data, Evas*, Evas_Object*, void* eventInfo)
 147 {
 148     static_cast<Pan*>(data)->mouseDown(static_cast<Evas_Event_Mouse_Down*>(eventInfo));
 149 }
 150
 151 void Pan::mouseDown(Evas_Event_Mouse_Down* event)
 152 {
 153     m_smoothAlgorithm->setEventPropagationTime(ecore_loop_time_get() - event->timestamp / 1000.0);
 154 }
 155
 156 void Pan::onMouseMove(void* data, Evas*, Evas_Object*, void* eventInfo)
 157 {
 158     static_cast<Pan*>(data)->mouseMove(static_cast<Evas_Event_Mouse_Move*>(eventInfo));
 159 }
 160
 161 void Pan::mouseMove(Evas_Event_Mouse_Move* event)
 162 {
 163     if (m_panAnimator)
 164         m_smoothAlgorithm->storeDataToHistory(event->cur.canvas.x, event->cur.canvas.y, event->timestamp / 1000.0);
 165 }
 166 #endif