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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/renderer/pepper/ppb_scrollbar_impl.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/logging.h" | |
| 9 #include "base/message_loop/message_loop.h" | |
| 10 #include "content/renderer/pepper/event_conversion.h" | |
| 11 #include "content/renderer/pepper/host_globals.h" | |
| 12 #include "content/renderer/pepper/pepper_plugin_instance_impl.h" | |
| 13 #include "content/renderer/pepper/plugin_module.h" | |
| 14 #include "content/renderer/pepper/ppb_image_data_impl.h" | |
| 15 #include "ppapi/c/dev/ppp_scrollbar_dev.h" | |
| 16 #include "ppapi/c/pp_bool.h" | |
| 17 #include "ppapi/thunk/thunk.h" | |
| 18 #include "skia/ext/platform_canvas.h" | |
| 19 #include "third_party/WebKit/public/platform/WebCanvas.h" | |
| 20 #include "third_party/WebKit/public/platform/WebRect.h" | |
| 21 #include "third_party/WebKit/public/platform/WebVector.h" | |
| 22 #include "third_party/WebKit/public/web/WebInputEvent.h" | |
| 23 #include "third_party/WebKit/public/web/WebPluginScrollbar.h" | |
| 24 | |
| 25 #if defined(OS_WIN) | |
| 26 #include "base/win/windows_version.h" | |
| 27 #endif | |
| 28 | |
| 29 using ppapi::thunk::PPB_Scrollbar_API; | |
| 30 using blink::WebInputEvent; | |
| 31 using blink::WebRect; | |
| 32 using blink::WebScrollbar; | |
| 33 using blink::WebPluginScrollbar; | |
| 34 | |
| 35 namespace content { | |
| 36 | |
| 37 // static | |
| 38 PP_Resource PPB_Scrollbar_Impl::Create(PP_Instance instance, bool vertical) { | |
| 39 scoped_refptr<PPB_Scrollbar_Impl> scrollbar(new PPB_Scrollbar_Impl(instance)); | |
| 40 scrollbar->Init(vertical); | |
| 41 return scrollbar->GetReference(); | |
| 42 } | |
| 43 | |
| 44 PPB_Scrollbar_Impl::PPB_Scrollbar_Impl(PP_Instance instance) | |
| 45 : PPB_Widget_Impl(instance), weak_ptr_factory_(this) {} | |
| 46 | |
| 47 PPB_Scrollbar_Impl::~PPB_Scrollbar_Impl() {} | |
| 48 | |
| 49 void PPB_Scrollbar_Impl::Init(bool vertical) { | |
| 50 PepperPluginInstanceImpl* plugin_instance = | |
| 51 HostGlobals::Get()->GetInstance(pp_instance()); | |
| 52 if (!plugin_instance) | |
| 53 return; | |
| 54 scrollbar_.reset(WebPluginScrollbar::createForPlugin( | |
| 55 vertical ? WebScrollbar::Vertical : WebScrollbar::Horizontal, | |
| 56 plugin_instance->container(), | |
| 57 static_cast<blink::WebPluginScrollbarClient*>(this))); | |
| 58 } | |
| 59 | |
| 60 PPB_Scrollbar_API* PPB_Scrollbar_Impl::AsPPB_Scrollbar_API() { return this; } | |
| 61 | |
| 62 void PPB_Scrollbar_Impl::InstanceWasDeleted() { scrollbar_.reset(); } | |
| 63 | |
| 64 uint32_t PPB_Scrollbar_Impl::GetThickness() { | |
| 65 return WebPluginScrollbar::defaultThickness(); | |
| 66 } | |
| 67 | |
| 68 bool PPB_Scrollbar_Impl::IsOverlay() { return scrollbar_->isOverlay(); } | |
| 69 | |
| 70 uint32_t PPB_Scrollbar_Impl::GetValue() { return scrollbar_->value(); } | |
| 71 | |
| 72 void PPB_Scrollbar_Impl::SetValue(uint32_t value) { | |
| 73 if (scrollbar_) | |
| 74 scrollbar_->setValue(value); | |
| 75 } | |
| 76 | |
| 77 void PPB_Scrollbar_Impl::SetDocumentSize(uint32_t size) { | |
| 78 if (scrollbar_) | |
| 79 scrollbar_->setDocumentSize(size); | |
| 80 } | |
| 81 | |
| 82 void PPB_Scrollbar_Impl::SetTickMarks(const PP_Rect* tick_marks, | |
| 83 uint32_t count) { | |
| 84 if (!scrollbar_) | |
| 85 return; | |
| 86 tickmarks_.resize(count); | |
| 87 for (uint32 i = 0; i < count; ++i) { | |
| 88 tickmarks_[i] = WebRect(tick_marks[i].point.x, | |
| 89 tick_marks[i].point.y, | |
| 90 tick_marks[i].size.width, | |
| 91 tick_marks[i].size.height); | |
| 92 ; | |
| 93 } | |
| 94 PP_Rect rect = location(); | |
| 95 Invalidate(&rect); | |
| 96 } | |
| 97 | |
| 98 void PPB_Scrollbar_Impl::ScrollBy(PP_ScrollBy_Dev unit, int32_t multiplier) { | |
| 99 if (!scrollbar_) | |
| 100 return; | |
| 101 | |
| 102 WebScrollbar::ScrollDirection direction = multiplier >= 0 | |
| 103 ? WebScrollbar::ScrollForward | |
| 104 : WebScrollbar::ScrollBackward; | |
| 105 float fmultiplier = 1.0; | |
| 106 | |
| 107 WebScrollbar::ScrollGranularity granularity; | |
| 108 if (unit == PP_SCROLLBY_LINE) { | |
| 109 granularity = WebScrollbar::ScrollByLine; | |
| 110 } else if (unit == PP_SCROLLBY_PAGE) { | |
| 111 granularity = WebScrollbar::ScrollByPage; | |
| 112 } else if (unit == PP_SCROLLBY_DOCUMENT) { | |
| 113 granularity = WebScrollbar::ScrollByDocument; | |
| 114 } else { | |
| 115 granularity = WebScrollbar::ScrollByPixel; | |
| 116 fmultiplier = static_cast<float>(multiplier); | |
| 117 if (fmultiplier < 0) | |
| 118 fmultiplier *= -1; | |
| 119 } | |
| 120 scrollbar_->scroll(direction, granularity, fmultiplier); | |
| 121 } | |
| 122 | |
| 123 PP_Bool PPB_Scrollbar_Impl::PaintInternal(const gfx::Rect& rect, | |
| 124 PPB_ImageData_Impl* image) { | |
| 125 ImageDataAutoMapper mapper(image); | |
| 126 skia::PlatformCanvas* canvas = image->GetPlatformCanvas(); | |
| 127 if (!canvas || !scrollbar_) | |
| 128 return PP_FALSE; | |
| 129 canvas->save(); | |
| 130 canvas->scale(scale(), scale()); | |
| 131 scrollbar_->paint(canvas, rect); | |
| 132 canvas->restore(); | |
| 133 | |
| 134 #if defined(OS_WIN) | |
| 135 if (base::win::GetVersion() == base::win::VERSION_XP) | |
| 136 skia::MakeOpaque(canvas, rect.x(), rect.y(), rect.width(), rect.height()); | |
| 137 #endif | |
| 138 | |
| 139 return PP_TRUE; | |
| 140 } | |
| 141 | |
| 142 PP_Bool PPB_Scrollbar_Impl::HandleEventInternal( | |
| 143 const ppapi::InputEventData& data) { | |
| 144 scoped_ptr<WebInputEvent> web_input_event(CreateWebInputEvent(data)); | |
| 145 if (!web_input_event.get() || !scrollbar_) | |
| 146 return PP_FALSE; | |
| 147 | |
| 148 return PP_FromBool(scrollbar_->handleInputEvent(*web_input_event.get())); | |
| 149 } | |
| 150 | |
| 151 void PPB_Scrollbar_Impl::SetLocationInternal(const PP_Rect* location) { | |
| 152 if (!scrollbar_) | |
| 153 return; | |
| 154 scrollbar_->setLocation(WebRect(location->point.x, | |
| 155 location->point.y, | |
| 156 location->size.width, | |
| 157 location->size.height)); | |
| 158 } | |
| 159 | |
| 160 void PPB_Scrollbar_Impl::valueChanged(blink::WebPluginScrollbar* scrollbar) { | |
| 161 PluginModule* plugin_module = | |
| 162 HostGlobals::Get()->GetInstance(pp_instance())->module(); | |
| 163 if (!plugin_module) | |
| 164 return; | |
| 165 | |
| 166 const PPP_Scrollbar_Dev* ppp_scrollbar = | |
| 167 static_cast<const PPP_Scrollbar_Dev*>( | |
| 168 plugin_module->GetPluginInterface(PPP_SCROLLBAR_DEV_INTERFACE)); | |
| 169 if (!ppp_scrollbar) { | |
| 170 // Try the old version. This is ok because the old interface is a subset of | |
| 171 // the new one, and ValueChanged didn't change. | |
| 172 ppp_scrollbar = static_cast<const PPP_Scrollbar_Dev*>( | |
| 173 plugin_module->GetPluginInterface(PPP_SCROLLBAR_DEV_INTERFACE_0_2)); | |
| 174 if (!ppp_scrollbar) | |
| 175 return; | |
| 176 } | |
| 177 ppp_scrollbar->ValueChanged( | |
| 178 pp_instance(), pp_resource(), scrollbar_->value()); | |
| 179 } | |
| 180 | |
| 181 void PPB_Scrollbar_Impl::overlayChanged(WebPluginScrollbar* scrollbar) { | |
| 182 PluginModule* plugin_module = | |
| 183 HostGlobals::Get()->GetInstance(pp_instance())->module(); | |
| 184 if (!plugin_module) | |
| 185 return; | |
| 186 | |
| 187 const PPP_Scrollbar_Dev* ppp_scrollbar = | |
| 188 static_cast<const PPP_Scrollbar_Dev*>( | |
| 189 plugin_module->GetPluginInterface(PPP_SCROLLBAR_DEV_INTERFACE)); | |
| 190 if (!ppp_scrollbar) | |
| 191 return; | |
| 192 ppp_scrollbar->OverlayChanged( | |
| 193 pp_instance(), pp_resource(), PP_FromBool(IsOverlay())); | |
| 194 } | |
| 195 | |
| 196 void PPB_Scrollbar_Impl::invalidateScrollbarRect( | |
| 197 blink::WebPluginScrollbar* scrollbar, | |
| 198 const blink::WebRect& rect) { | |
| 199 gfx::Rect gfx_rect(rect.x, rect.y, rect.width, rect.height); | |
| 200 dirty_.Union(gfx_rect); | |
| 201 // Can't call into the client to tell them about the invalidate right away, | |
| 202 // since the PPB_Scrollbar_Impl code is still in the middle of updating its | |
| 203 // internal state. | |
| 204 // Note: we use a WeakPtrFactory here so that a lingering callback can not | |
| 205 // modify the lifetime of this object. Otherwise, blink::WebPluginScrollbar | |
| 206 // could outlive blink::WebPluginContainer, which is against its contract. | |
| 207 base::MessageLoop::current()->PostTask( | |
| 208 FROM_HERE, | |
| 209 base::Bind(&PPB_Scrollbar_Impl::NotifyInvalidate, | |
| 210 weak_ptr_factory_.GetWeakPtr())); | |
| 211 } | |
| 212 | |
| 213 void PPB_Scrollbar_Impl::getTickmarks( | |
| 214 blink::WebPluginScrollbar* scrollbar, | |
| 215 blink::WebVector<blink::WebRect>* tick_marks) const { | |
| 216 if (tickmarks_.empty()) { | |
| 217 WebRect* rects = NULL; | |
| 218 tick_marks->assign(rects, 0); | |
| 219 } else { | |
| 220 tick_marks->assign(&tickmarks_[0], tickmarks_.size()); | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 void PPB_Scrollbar_Impl::NotifyInvalidate() { | |
| 225 if (dirty_.IsEmpty()) | |
| 226 return; | |
| 227 PP_Rect pp_rect; | |
| 228 pp_rect.point.x = dirty_.x(); | |
| 229 pp_rect.point.y = dirty_.y(); | |
| 230 pp_rect.size.width = dirty_.width(); | |
| 231 pp_rect.size.height = dirty_.height(); | |
| 232 dirty_ = gfx::Rect(); | |
| 233 Invalidate(&pp_rect); | |
| 234 } | |
| 235 | |
| 236 } // namespace content | |
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