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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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