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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 "ppapi/proxy/ppb_graphics_2d_proxy.h" | |
| 6 | |
| 7 #include <string.h> // For memset. | |
| 8 | |
| 9 #include "base/compiler_specific.h" | |
| 10 #include "base/logging.h" | |
| 11 #include "ppapi/c/pp_completion_callback.h" | |
| 12 #include "ppapi/c/pp_errors.h" | |
| 13 #include "ppapi/c/pp_resource.h" | |
| 14 #include "ppapi/c/ppb_graphics_2d.h" | |
| 15 #include "ppapi/proxy/enter_proxy.h" | |
| 16 #include "ppapi/proxy/plugin_dispatcher.h" | |
| 17 #include "ppapi/proxy/plugin_resource_tracker.h" | |
| 18 #include "ppapi/proxy/ppapi_messages.h" | |
| 19 #include "ppapi/proxy/ppb_image_data_proxy.h" | |
| 20 #include "ppapi/shared_impl/tracked_callback.h" | |
| 21 #include "ppapi/thunk/enter.h" | |
| 22 #include "ppapi/thunk/ppb_graphics_2d_api.h" | |
| 23 #include "ppapi/thunk/thunk.h" | |
| 24 | |
| 25 using ppapi::thunk::PPB_Graphics2D_API; | |
| 26 | |
| 27 namespace ppapi { | |
| 28 namespace proxy { | |
| 29 | |
| 30 class Graphics2D : public Resource, public thunk::PPB_Graphics2D_API { | |
| 31 public: | |
| 32 Graphics2D(const HostResource& host_resource, | |
| 33 const PP_Size& size, | |
| 34 PP_Bool is_always_opaque); | |
| 35 virtual ~Graphics2D(); | |
| 36 | |
| 37 // Resource. | |
| 38 virtual PPB_Graphics2D_API* AsPPB_Graphics2D_API(); | |
| 39 | |
| 40 // PPB_Graphics_2D_API. | |
| 41 PP_Bool Describe(PP_Size* size, PP_Bool* is_always_opaque); | |
| 42 void PaintImageData(PP_Resource image_data, | |
| 43 const PP_Point* top_left, | |
| 44 const PP_Rect* src_rect); | |
| 45 void Scroll(const PP_Rect* clip_rect, | |
| 46 const PP_Point* amount); | |
| 47 void ReplaceContents(PP_Resource image_data); | |
| 48 bool SetScale(float scale); | |
| 49 float GetScale(); | |
| 50 int32_t Flush(scoped_refptr<TrackedCallback> callback, | |
| 51 PP_Resource* old_image_data); | |
| 52 | |
| 53 // Notification that the host has sent an ACK for a pending Flush. | |
| 54 void FlushACK(int32_t result_code); | |
| 55 | |
| 56 private: | |
| 57 PluginDispatcher* GetDispatcher() const { | |
| 58 return PluginDispatcher::GetForResource(this); | |
| 59 } | |
| 60 | |
| 61 static const ApiID kApiID = API_ID_PPB_GRAPHICS_2D; | |
| 62 | |
| 63 PP_Size size_; | |
| 64 PP_Bool is_always_opaque_; | |
| 65 float scale_; | |
| 66 | |
| 67 // In the plugin, this is the current callback set for Flushes. When the | |
| 68 // pointer is non-NULL, we're waiting for a flush ACK. | |
| 69 scoped_refptr<TrackedCallback> current_flush_callback_; | |
| 70 | |
| 71 DISALLOW_COPY_AND_ASSIGN(Graphics2D); | |
| 72 }; | |
| 73 | |
| 74 Graphics2D::Graphics2D(const HostResource& host_resource, | |
| 75 const PP_Size& size, | |
| 76 PP_Bool is_always_opaque) | |
| 77 : Resource(OBJECT_IS_PROXY, host_resource), | |
| 78 size_(size), | |
| 79 is_always_opaque_(is_always_opaque), | |
| 80 scale_(1.0f) { | |
| 81 } | |
| 82 | |
| 83 Graphics2D::~Graphics2D() { | |
| 84 } | |
| 85 | |
| 86 PPB_Graphics2D_API* Graphics2D::AsPPB_Graphics2D_API() { | |
| 87 return this; | |
| 88 } | |
| 89 | |
| 90 PP_Bool Graphics2D::Describe(PP_Size* size, PP_Bool* is_always_opaque) { | |
| 91 *size = size_; | |
| 92 *is_always_opaque = is_always_opaque_; | |
| 93 return PP_TRUE; | |
| 94 } | |
| 95 | |
| 96 void Graphics2D::PaintImageData(PP_Resource image_data, | |
| 97 const PP_Point* top_left, | |
| 98 const PP_Rect* src_rect) { | |
| 99 Resource* image_object = | |
| 100 PpapiGlobals::Get()->GetResourceTracker()->GetResource(image_data); | |
| 101 if (!image_object || pp_instance() != image_object->pp_instance()) { | |
| 102 Log(PP_LOGLEVEL_ERROR, | |
| 103 "PPB_Graphics2D.PaintImageData: Bad image resource."); | |
| 104 return; | |
| 105 } | |
| 106 | |
| 107 PP_Rect dummy; | |
| 108 memset(&dummy, 0, sizeof(PP_Rect)); | |
| 109 GetDispatcher()->Send(new PpapiHostMsg_PPBGraphics2D_PaintImageData( | |
| 110 kApiID, host_resource(), image_object->host_resource(), *top_left, | |
| 111 !!src_rect, src_rect ? *src_rect : dummy)); | |
| 112 } | |
| 113 | |
| 114 void Graphics2D::Scroll(const PP_Rect* clip_rect, | |
| 115 const PP_Point* amount) { | |
| 116 PP_Rect dummy; | |
| 117 memset(&dummy, 0, sizeof(PP_Rect)); | |
| 118 GetDispatcher()->Send(new PpapiHostMsg_PPBGraphics2D_Scroll( | |
| 119 kApiID, host_resource(), !!clip_rect, clip_rect ? *clip_rect : dummy, | |
| 120 *amount)); | |
| 121 } | |
| 122 | |
| 123 void Graphics2D::ReplaceContents(PP_Resource image_data) { | |
| 124 thunk::EnterResourceNoLock<thunk::PPB_ImageData_API> enter_image( | |
| 125 image_data, true); | |
| 126 if (enter_image.failed()) | |
| 127 return; | |
| 128 | |
| 129 ImageData* image_object = static_cast<ImageData*>(enter_image.object()); | |
| 130 if (pp_instance() != image_object->pp_instance()) { | |
| 131 Log(PP_LOGLEVEL_ERROR, | |
| 132 "PPB_Graphics2D.ReplaceContents: Image resource for another instance."); | |
| 133 return; | |
| 134 } | |
| 135 image_object->set_used_in_replace_contents(); | |
| 136 | |
| 137 GetDispatcher()->Send(new PpapiHostMsg_PPBGraphics2D_ReplaceContents( | |
| 138 kApiID, host_resource(), image_object->host_resource())); | |
| 139 } | |
| 140 | |
| 141 bool Graphics2D::SetScale(float scale) { | |
| 142 if (scale <= 0.0f) | |
| 143 return false; | |
| 144 GetDispatcher()->Send(new PpapiHostMsg_PPBGraphics2D_Dev_SetScale( | |
| 145 kApiID, host_resource(), scale)); | |
| 146 scale_ = scale; | |
| 147 return true; | |
| 148 } | |
| 149 | |
| 150 float Graphics2D::GetScale() { | |
| 151 return scale_; | |
| 152 } | |
| 153 | |
| 154 int32_t Graphics2D::Flush(scoped_refptr<TrackedCallback> callback, | |
| 155 PP_Resource* old_image_data) { | |
| 156 // We don't support this feature, it's for in-renderer only. | |
| 157 if (old_image_data) | |
| 158 *old_image_data = 0; | |
| 159 | |
| 160 if (TrackedCallback::IsPending(current_flush_callback_)) | |
| 161 return PP_ERROR_INPROGRESS; // Can't have >1 flush pending. | |
| 162 current_flush_callback_ = callback; | |
| 163 | |
| 164 GetDispatcher()->Send(new PpapiHostMsg_PPBGraphics2D_Flush(kApiID, | |
| 165 host_resource())); | |
| 166 return PP_OK_COMPLETIONPENDING; | |
| 167 } | |
| 168 | |
| 169 void Graphics2D::FlushACK(int32_t result_code) { | |
| 170 TrackedCallback::ClearAndRun(¤t_flush_callback_, result_code); | |
| 171 } | |
| 172 | |
| 173 PPB_Graphics2D_Proxy::PPB_Graphics2D_Proxy(Dispatcher* dispatcher) | |
| 174 : InterfaceProxy(dispatcher), | |
| 175 callback_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) { | |
| 176 } | |
| 177 | |
| 178 PPB_Graphics2D_Proxy::~PPB_Graphics2D_Proxy() { | |
| 179 } | |
| 180 | |
| 181 // static | |
| 182 PP_Resource PPB_Graphics2D_Proxy::CreateProxyResource( | |
| 183 PP_Instance instance, | |
| 184 const PP_Size& size, | |
| 185 PP_Bool is_always_opaque) { | |
| 186 PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance); | |
| 187 if (!dispatcher) | |
| 188 return 0; | |
| 189 | |
| 190 HostResource result; | |
| 191 dispatcher->Send(new PpapiHostMsg_PPBGraphics2D_Create( | |
| 192 kApiID, instance, size, is_always_opaque, &result)); | |
| 193 if (result.is_null()) | |
| 194 return 0; | |
| 195 return (new Graphics2D(result, size, is_always_opaque))->GetReference(); | |
| 196 } | |
| 197 | |
| 198 bool PPB_Graphics2D_Proxy::OnMessageReceived(const IPC::Message& msg) { | |
| 199 bool handled = true; | |
| 200 IPC_BEGIN_MESSAGE_MAP(PPB_Graphics2D_Proxy, msg) | |
| 201 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_Create, | |
| 202 OnHostMsgCreate) | |
| 203 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_PaintImageData, | |
| 204 OnHostMsgPaintImageData) | |
| 205 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_Scroll, | |
| 206 OnHostMsgScroll) | |
| 207 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_ReplaceContents, | |
| 208 OnHostMsgReplaceContents) | |
| 209 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_Flush, | |
| 210 OnHostMsgFlush) | |
| 211 IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBGraphics2D_Dev_SetScale, | |
| 212 OnHostMsgSetScale) | |
| 213 | |
| 214 IPC_MESSAGE_HANDLER(PpapiMsg_PPBGraphics2D_FlushACK, | |
| 215 OnPluginMsgFlushACK) | |
| 216 IPC_MESSAGE_UNHANDLED(handled = false) | |
| 217 IPC_END_MESSAGE_MAP() | |
| 218 // FIXME(brettw) handle bad messages! | |
| 219 return handled; | |
| 220 } | |
| 221 | |
| 222 void PPB_Graphics2D_Proxy::OnHostMsgCreate(PP_Instance instance, | |
| 223 const PP_Size& size, | |
| 224 PP_Bool is_always_opaque, | |
| 225 HostResource* result) { | |
| 226 thunk::EnterResourceCreation enter(instance); | |
| 227 if (enter.succeeded()) { | |
| 228 result->SetHostResource(instance, enter.functions()->CreateGraphics2D( | |
| 229 instance, size, is_always_opaque)); | |
| 230 } | |
| 231 } | |
| 232 | |
| 233 void PPB_Graphics2D_Proxy::OnHostMsgPaintImageData( | |
| 234 const HostResource& graphics_2d, | |
| 235 const HostResource& image_data, | |
| 236 const PP_Point& top_left, | |
| 237 bool src_rect_specified, | |
| 238 const PP_Rect& src_rect) { | |
| 239 EnterHostFromHostResource<PPB_Graphics2D_API> enter(graphics_2d); | |
| 240 if (enter.failed()) | |
| 241 return; | |
| 242 enter.object()->PaintImageData(image_data.host_resource(), &top_left, | |
| 243 src_rect_specified ? &src_rect : NULL); | |
| 244 } | |
| 245 | |
| 246 void PPB_Graphics2D_Proxy::OnHostMsgScroll(const HostResource& graphics_2d, | |
| 247 bool clip_specified, | |
| 248 const PP_Rect& clip, | |
| 249 const PP_Point& amount) { | |
| 250 EnterHostFromHostResource<PPB_Graphics2D_API> enter(graphics_2d); | |
| 251 if (enter.failed()) | |
| 252 return; | |
| 253 enter.object()->Scroll(clip_specified ? &clip : NULL, &amount); | |
| 254 } | |
| 255 | |
| 256 void PPB_Graphics2D_Proxy::OnHostMsgReplaceContents( | |
| 257 const HostResource& graphics_2d, | |
| 258 const HostResource& image_data) { | |
| 259 EnterHostFromHostResource<PPB_Graphics2D_API> enter(graphics_2d); | |
| 260 if (enter.failed()) | |
| 261 return; | |
| 262 enter.object()->ReplaceContents(image_data.host_resource()); | |
| 263 } | |
| 264 | |
| 265 void PPB_Graphics2D_Proxy::OnHostMsgFlush(const HostResource& graphics_2d) { | |
| 266 EnterHostFromHostResourceForceCallback<PPB_Graphics2D_API> enter( | |
| 267 graphics_2d, callback_factory_, | |
| 268 &PPB_Graphics2D_Proxy::SendFlushACKToPlugin, graphics_2d); | |
| 269 if (enter.failed()) | |
| 270 return; | |
| 271 PP_Resource old_image_data = 0; | |
| 272 enter.SetResult(enter.object()->Flush(enter.callback(), &old_image_data)); | |
| 273 if (old_image_data) { | |
| 274 // If the Graphics2D has an old image data it's not using any more, send | |
| 275 // it back to the plugin for possible re-use. See ppb_image_data_proxy.cc | |
| 276 // for a description how this process works. | |
| 277 HostResource old_image_data_host_resource; | |
| 278 old_image_data_host_resource.SetHostResource(graphics_2d.instance(), | |
| 279 old_image_data); | |
| 280 dispatcher()->Send(new PpapiMsg_PPBImageData_NotifyUnusedImageData( | |
| 281 API_ID_PPB_IMAGE_DATA, old_image_data_host_resource)); | |
| 282 } | |
| 283 } | |
| 284 | |
| 285 void PPB_Graphics2D_Proxy::OnHostMsgSetScale(const HostResource& graphics_2d, | |
| 286 float scale) { | |
| 287 EnterHostFromHostResource<PPB_Graphics2D_API> enter(graphics_2d); | |
| 288 if (enter.failed()) | |
| 289 return; | |
| 290 enter.object()->SetScale(scale); | |
| 291 } | |
| 292 | |
| 293 void PPB_Graphics2D_Proxy::OnPluginMsgFlushACK( | |
| 294 const HostResource& host_resource, | |
| 295 int32_t pp_error) { | |
| 296 EnterPluginFromHostResource<PPB_Graphics2D_API> enter(host_resource); | |
| 297 if (enter.succeeded()) | |
| 298 static_cast<Graphics2D*>(enter.object())->FlushACK(pp_error); | |
| 299 } | |
| 300 | |
| 301 void PPB_Graphics2D_Proxy::SendFlushACKToPlugin( | |
| 302 int32_t result, | |
| 303 const HostResource& graphics_2d) { | |
| 304 dispatcher()->Send(new PpapiMsg_PPBGraphics2D_FlushACK(kApiID, graphics_2d, | |
| 305 result)); | |
| 306 } | |
| 307 | |
| 308 } // namespace proxy | |
| 309 } // namespace ppapi | |
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Chromium Code Reviews
Issue 11053003:
Migrate Graphics2D to new design. (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master