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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "ui/ozone/platform/drm/gpu/screen_manager.h" | 5 #include "ui/ozone/platform/drm/gpu/screen_manager.h" |
| 6 | 6 |
| 7 #include <xf86drmMode.h> | 7 #include <xf86drmMode.h> |
| 8 | 8 |
| 9 #include "third_party/skia/include/core/SkCanvas.h" | 9 #include "third_party/skia/include/core/SkCanvas.h" |
| 10 #include "ui/gfx/geometry/point.h" | 10 #include "ui/gfx/geometry/point.h" |
| (...skipping 15 matching lines...) Expand all Loading... |
| 26 // to the new modeset buffer |buffer|. | 26 // to the new modeset buffer |buffer|. |
| 27 void FillModesetBuffer(const scoped_refptr<DrmDevice>& drm, | 27 void FillModesetBuffer(const scoped_refptr<DrmDevice>& drm, |
| 28 HardwareDisplayController* controller, | 28 HardwareDisplayController* controller, |
| 29 ScanoutBuffer* buffer) { | 29 ScanoutBuffer* buffer) { |
| 30 DrmConsoleBuffer modeset_buffer(drm, buffer->GetFramebufferId()); | 30 DrmConsoleBuffer modeset_buffer(drm, buffer->GetFramebufferId()); |
| 31 if (!modeset_buffer.Initialize()) { | 31 if (!modeset_buffer.Initialize()) { |
| 32 VLOG(2) << "Failed to grab framebuffer " << buffer->GetFramebufferId(); | 32 VLOG(2) << "Failed to grab framebuffer " << buffer->GetFramebufferId(); |
| 33 return; | 33 return; |
| 34 } | 34 } |
| 35 | 35 |
| 36 auto crtcs = controller->crtc_controllers(); | 36 DCHECK(!controller->crtc_controllers().empty()); |
| 37 DCHECK(!crtcs.empty()); | 37 CrtcController* first_crtc = controller->crtc_controllers()[0].get(); |
| 38 | 38 ScopedDrmCrtcPtr saved_crtc(drm->GetCrtc(first_crtc->crtc())); |
| 39 ScopedDrmCrtcPtr saved_crtc(drm->GetCrtc(crtcs[0]->crtc())); | |
| 40 if (!saved_crtc || !saved_crtc->buffer_id) { | 39 if (!saved_crtc || !saved_crtc->buffer_id) { |
| 41 VLOG(2) << "Crtc has no saved state or wasn't modeset"; | 40 VLOG(2) << "Crtc has no saved state or wasn't modeset"; |
| 42 return; | 41 return; |
| 43 } | 42 } |
| 44 | 43 |
| 45 // If the display controller is in mirror mode, the CRTCs should be sharing | 44 // If the display controller is in mirror mode, the CRTCs should be sharing |
| 46 // the same framebuffer. | 45 // the same framebuffer. |
| 47 DrmConsoleBuffer saved_buffer(drm, saved_crtc->buffer_id); | 46 DrmConsoleBuffer saved_buffer(drm, saved_crtc->buffer_id); |
| 48 if (!saved_buffer.Initialize()) { | 47 if (!saved_buffer.Initialize()) { |
| 49 VLOG(2) << "Failed to grab saved framebuffer " << saved_crtc->buffer_id; | 48 VLOG(2) << "Failed to grab saved framebuffer " << saved_crtc->buffer_id; |
| (...skipping 11 matching lines...) Expand all Loading... |
| 61 skia::RefPtr<SkImage> image = saved_buffer.image(); | 60 skia::RefPtr<SkImage> image = saved_buffer.image(); |
| 62 SkPaint paint; | 61 SkPaint paint; |
| 63 // Copy the source buffer. Do not perform any blending. | 62 // Copy the source buffer. Do not perform any blending. |
| 64 paint.setXfermodeMode(SkXfermode::kSrc_Mode); | 63 paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 65 modeset_buffer.canvas()->drawImage(image.get(), 0, 0, &paint); | 64 modeset_buffer.canvas()->drawImage(image.get(), 0, 0, &paint); |
| 66 } | 65 } |
| 67 | 66 |
| 68 CrtcController* GetCrtcController(HardwareDisplayController* controller, | 67 CrtcController* GetCrtcController(HardwareDisplayController* controller, |
| 69 const scoped_refptr<DrmDevice>& drm, | 68 const scoped_refptr<DrmDevice>& drm, |
| 70 uint32_t crtc) { | 69 uint32_t crtc) { |
| 71 for (CrtcController* crtc_controller : controller->crtc_controllers()) { | 70 for (const auto& crtc_controller : controller->crtc_controllers()) { |
| 72 if (crtc_controller->crtc() == crtc) | 71 if (crtc_controller->crtc() == crtc) |
| 73 return crtc_controller; | 72 return crtc_controller.get(); |
| 74 } | 73 } |
| 75 | 74 |
| 76 NOTREACHED(); | 75 NOTREACHED(); |
| 77 return nullptr; | 76 return nullptr; |
| 78 } | 77 } |
| 79 | 78 |
| 80 } // namespace | 79 } // namespace |
| 81 | 80 |
| 82 ScreenManager::ScreenManager(ScanoutBufferGenerator* buffer_generator) | 81 ScreenManager::ScreenManager(ScanoutBufferGenerator* buffer_generator) |
| 83 : buffer_generator_(buffer_generator) { | 82 : buffer_generator_(buffer_generator) { |
| 84 } | 83 } |
| 85 | 84 |
| 86 ScreenManager::~ScreenManager() { | 85 ScreenManager::~ScreenManager() { |
| 87 DCHECK(window_map_.empty()); | 86 DCHECK(window_map_.empty()); |
| 88 } | 87 } |
| 89 | 88 |
| 90 void ScreenManager::AddDisplayController(const scoped_refptr<DrmDevice>& drm, | 89 void ScreenManager::AddDisplayController(const scoped_refptr<DrmDevice>& drm, |
| 91 uint32_t crtc, | 90 uint32_t crtc, |
| 92 uint32_t connector) { | 91 uint32_t connector) { |
| 93 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); | 92 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); |
| 94 // TODO(dnicoara): Turn this into a DCHECK when async display configuration is | 93 // TODO(dnicoara): Turn this into a DCHECK when async display configuration is |
| 95 // properly supported. (When there can't be a race between forcing initial | 94 // properly supported. (When there can't be a race between forcing initial |
| 96 // display configuration in ScreenManager and NativeDisplayDelegate creating | 95 // display configuration in ScreenManager and NativeDisplayDelegate creating |
| 97 // the display controllers.) | 96 // the display controllers.) |
| 98 if (it != controllers_.end()) { | 97 if (it != controllers_.end()) { |
| 99 LOG(WARNING) << "Display controller (crtc=" << crtc << ") already present."; | 98 LOG(WARNING) << "Display controller (crtc=" << crtc << ") already present."; |
| 100 return; | 99 return; |
| 101 } | 100 } |
| 102 | 101 |
| 103 controllers_.push_back(new HardwareDisplayController( | 102 controllers_.push_back(make_scoped_ptr(new HardwareDisplayController( |
| 104 scoped_ptr<CrtcController>(new CrtcController(drm, crtc, connector)), | 103 scoped_ptr<CrtcController>(new CrtcController(drm, crtc, connector)), |
| 105 gfx::Point())); | 104 gfx::Point()))); |
| 106 } | 105 } |
| 107 | 106 |
| 108 void ScreenManager::RemoveDisplayController(const scoped_refptr<DrmDevice>& drm, | 107 void ScreenManager::RemoveDisplayController(const scoped_refptr<DrmDevice>& drm, |
| 109 uint32_t crtc) { | 108 uint32_t crtc) { |
| 110 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); | 109 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); |
| 111 if (it != controllers_.end()) { | 110 if (it != controllers_.end()) { |
| 112 bool is_mirrored = (*it)->IsMirrored(); | 111 bool is_mirrored = (*it)->IsMirrored(); |
| 113 (*it)->RemoveCrtc(drm, crtc); | 112 (*it)->RemoveCrtc(drm, crtc); |
| 114 if (!is_mirrored) { | 113 if (!is_mirrored) { |
| 115 controllers_.erase(it); | 114 controllers_.erase(it); |
| (...skipping 21 matching lines...) Expand all Loading... |
| 137 uint32_t crtc, | 136 uint32_t crtc, |
| 138 uint32_t connector, | 137 uint32_t connector, |
| 139 const gfx::Point& origin, | 138 const gfx::Point& origin, |
| 140 const drmModeModeInfo& mode) { | 139 const drmModeModeInfo& mode) { |
| 141 gfx::Rect modeset_bounds(origin.x(), origin.y(), mode.hdisplay, | 140 gfx::Rect modeset_bounds(origin.x(), origin.y(), mode.hdisplay, |
| 142 mode.vdisplay); | 141 mode.vdisplay); |
| 143 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); | 142 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); |
| 144 DCHECK(controllers_.end() != it) << "Display controller (crtc=" << crtc | 143 DCHECK(controllers_.end() != it) << "Display controller (crtc=" << crtc |
| 145 << ") doesn't exist."; | 144 << ") doesn't exist."; |
| 146 | 145 |
| 147 HardwareDisplayController* controller = *it; | 146 HardwareDisplayController* controller = it->get(); |
| 148 CrtcController* crtc_controller = GetCrtcController(controller, drm, crtc); | 147 CrtcController* crtc_controller = GetCrtcController(controller, drm, crtc); |
| 149 // If nothing changed just enable the controller. Note, we perform an exact | 148 // If nothing changed just enable the controller. Note, we perform an exact |
| 150 // comparison on the mode since the refresh rate may have changed. | 149 // comparison on the mode since the refresh rate may have changed. |
| 151 if (SameMode(mode, crtc_controller->mode()) && | 150 if (SameMode(mode, crtc_controller->mode()) && |
| 152 origin == controller->origin()) { | 151 origin == controller->origin()) { |
| 153 if (controller->IsDisabled()) { | 152 if (controller->IsDisabled()) { |
| 154 HardwareDisplayControllers::iterator mirror = | 153 HardwareDisplayControllers::iterator mirror = |
| 155 FindActiveDisplayControllerByLocation(modeset_bounds); | 154 FindActiveDisplayControllerByLocation(modeset_bounds); |
| 156 // If there is an active controller at the same location then start mirror | 155 // If there is an active controller at the same location then start mirror |
| 157 // mode. | 156 // mode. |
| 158 if (mirror != controllers_.end()) | 157 if (mirror != controllers_.end()) |
| 159 return HandleMirrorMode(it, mirror, drm, crtc, connector, mode); | 158 return HandleMirrorMode(it, mirror, drm, crtc, connector, mode); |
| 160 } | 159 } |
| 161 | 160 |
| 162 // Just re-enable the controller to re-use the current state. | 161 // Just re-enable the controller to re-use the current state. |
| 163 return EnableController(controller); | 162 return EnableController(controller); |
| 164 } | 163 } |
| 165 | 164 |
| 166 // Either the mode or the location of the display changed, so exit mirror | 165 // Either the mode or the location of the display changed, so exit mirror |
| 167 // mode and configure the display independently. If the caller still wants | 166 // mode and configure the display independently. If the caller still wants |
| 168 // mirror mode, subsequent calls configuring the other controllers will | 167 // mirror mode, subsequent calls configuring the other controllers will |
| 169 // restore mirror mode. | 168 // restore mirror mode. |
| 170 if (controller->IsMirrored()) { | 169 if (controller->IsMirrored()) { |
| 171 controller = new HardwareDisplayController( | 170 controllers_.push_back(make_scoped_ptr(new HardwareDisplayController( |
| 172 controller->RemoveCrtc(drm, crtc), controller->origin()); | 171 controller->RemoveCrtc(drm, crtc), controller->origin()))); |
| 173 controllers_.push_back(controller); | |
| 174 it = controllers_.end() - 1; | 172 it = controllers_.end() - 1; |
| 173 controller = it->get(); |
| 175 } | 174 } |
| 176 | 175 |
| 177 HardwareDisplayControllers::iterator mirror = | 176 HardwareDisplayControllers::iterator mirror = |
| 178 FindActiveDisplayControllerByLocation(modeset_bounds); | 177 FindActiveDisplayControllerByLocation(modeset_bounds); |
| 179 // Handle mirror mode. | 178 // Handle mirror mode. |
| 180 if (mirror != controllers_.end() && it != mirror) | 179 if (mirror != controllers_.end() && it != mirror) |
| 181 return HandleMirrorMode(it, mirror, drm, crtc, connector, mode); | 180 return HandleMirrorMode(it, mirror, drm, crtc, connector, mode); |
| 182 | 181 |
| 183 return ModesetController(controller, origin, mode); | 182 return ModesetController(controller, origin, mode); |
| 184 } | 183 } |
| 185 | 184 |
| 186 bool ScreenManager::DisableDisplayController( | 185 bool ScreenManager::DisableDisplayController( |
| 187 const scoped_refptr<DrmDevice>& drm, | 186 const scoped_refptr<DrmDevice>& drm, |
| 188 uint32_t crtc) { | 187 uint32_t crtc) { |
| 189 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); | 188 HardwareDisplayControllers::iterator it = FindDisplayController(drm, crtc); |
| 190 if (it != controllers_.end()) { | 189 if (it != controllers_.end()) { |
| 191 HardwareDisplayController* controller = *it; | 190 HardwareDisplayController* controller = it->get(); |
| 192 if (controller->IsMirrored()) { | 191 if (controller->IsMirrored()) { |
| 193 controller = new HardwareDisplayController( | 192 controllers_.push_back(make_scoped_ptr(new HardwareDisplayController( |
| 194 controller->RemoveCrtc(drm, crtc), controller->origin()); | 193 controller->RemoveCrtc(drm, crtc), controller->origin()))); |
| 195 controllers_.push_back(controller); | 194 controller = controllers_.back().get(); |
| 196 } | 195 } |
| 197 | 196 |
| 198 controller->Disable(); | 197 controller->Disable(); |
| 199 UpdateControllerToWindowMapping(); | 198 UpdateControllerToWindowMapping(); |
| 200 return true; | 199 return true; |
| 201 } | 200 } |
| 202 | 201 |
| 203 LOG(ERROR) << "Failed to find display controller crtc=" << crtc; | 202 LOG(ERROR) << "Failed to find display controller crtc=" << crtc; |
| 204 return false; | 203 return false; |
| 205 } | 204 } |
| 206 | 205 |
| 207 HardwareDisplayController* ScreenManager::GetDisplayController( | 206 HardwareDisplayController* ScreenManager::GetDisplayController( |
| 208 const gfx::Rect& bounds) { | 207 const gfx::Rect& bounds) { |
| 209 HardwareDisplayControllers::iterator it = | 208 HardwareDisplayControllers::iterator it = |
| 210 FindActiveDisplayControllerByLocation(bounds); | 209 FindActiveDisplayControllerByLocation(bounds); |
| 211 if (it != controllers_.end()) | 210 if (it != controllers_.end()) |
| 212 return *it; | 211 return it->get(); |
| 213 | 212 |
| 214 return nullptr; | 213 return nullptr; |
| 215 } | 214 } |
| 216 | 215 |
| 217 void ScreenManager::AddWindow(gfx::AcceleratedWidget widget, | 216 void ScreenManager::AddWindow(gfx::AcceleratedWidget widget, |
| 218 scoped_ptr<DrmWindow> window) { | 217 scoped_ptr<DrmWindow> window) { |
| 219 std::pair<WidgetToWindowMap::iterator, bool> result = | 218 std::pair<WidgetToWindowMap::iterator, bool> result = |
| 220 window_map_.add(widget, window.Pass()); | 219 window_map_.add(widget, window.Pass()); |
| 221 DCHECK(result.second) << "Window already added."; | 220 DCHECK(result.second) << "Window already added."; |
| 222 UpdateControllerToWindowMapping(); | 221 UpdateControllerToWindowMapping(); |
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| 234 WidgetToWindowMap::iterator it = window_map_.find(widget); | 233 WidgetToWindowMap::iterator it = window_map_.find(widget); |
| 235 if (it != window_map_.end()) | 234 if (it != window_map_.end()) |
| 236 return it->second; | 235 return it->second; |
| 237 | 236 |
| 238 return nullptr; | 237 return nullptr; |
| 239 } | 238 } |
| 240 | 239 |
| 241 ScreenManager::HardwareDisplayControllers::iterator | 240 ScreenManager::HardwareDisplayControllers::iterator |
| 242 ScreenManager::FindDisplayController(const scoped_refptr<DrmDevice>& drm, | 241 ScreenManager::FindDisplayController(const scoped_refptr<DrmDevice>& drm, |
| 243 uint32_t crtc) { | 242 uint32_t crtc) { |
| 244 for (HardwareDisplayControllers::iterator it = controllers_.begin(); | 243 for (auto it = controllers_.begin(); it != controllers_.end(); ++it) { |
| 245 it != controllers_.end(); ++it) { | |
| 246 if ((*it)->HasCrtc(drm, crtc)) | 244 if ((*it)->HasCrtc(drm, crtc)) |
| 247 return it; | 245 return it; |
| 248 } | 246 } |
| 249 | 247 |
| 250 return controllers_.end(); | 248 return controllers_.end(); |
| 251 } | 249 } |
| 252 | 250 |
| 253 ScreenManager::HardwareDisplayControllers::iterator | 251 ScreenManager::HardwareDisplayControllers::iterator |
| 254 ScreenManager::FindActiveDisplayControllerByLocation(const gfx::Rect& bounds) { | 252 ScreenManager::FindActiveDisplayControllerByLocation(const gfx::Rect& bounds) { |
| 255 for (HardwareDisplayControllers::iterator it = controllers_.begin(); | 253 for (auto it = controllers_.begin(); it != controllers_.end(); ++it) { |
| 256 it != controllers_.end(); ++it) { | |
| 257 gfx::Rect controller_bounds((*it)->origin(), (*it)->GetModeSize()); | 254 gfx::Rect controller_bounds((*it)->origin(), (*it)->GetModeSize()); |
| 258 if (controller_bounds == bounds && !(*it)->IsDisabled()) | 255 if (controller_bounds == bounds && !(*it)->IsDisabled()) |
| 259 return it; | 256 return it; |
| 260 } | 257 } |
| 261 | 258 |
| 262 return controllers_.end(); | 259 return controllers_.end(); |
| 263 } | 260 } |
| 264 | 261 |
| 265 bool ScreenManager::HandleMirrorMode( | 262 bool ScreenManager::HandleMirrorMode( |
| 266 HardwareDisplayControllers::iterator original, | 263 HardwareDisplayControllers::iterator original, |
| 267 HardwareDisplayControllers::iterator mirror, | 264 HardwareDisplayControllers::iterator mirror, |
| 268 const scoped_refptr<DrmDevice>& drm, | 265 const scoped_refptr<DrmDevice>& drm, |
| 269 uint32_t crtc, | 266 uint32_t crtc, |
| 270 uint32_t connector, | 267 uint32_t connector, |
| 271 const drmModeModeInfo& mode) { | 268 const drmModeModeInfo& mode) { |
| 272 gfx::Point last_origin = (*original)->origin(); | 269 gfx::Point last_origin = (*original)->origin(); |
| 273 // There should only be one CRTC in this controller. | 270 // There should only be one CRTC in this controller. |
| 274 drmModeModeInfo last_mode = (*original)->crtc_controllers()[0]->mode(); | 271 drmModeModeInfo last_mode = (*original)->crtc_controllers()[0]->mode(); |
| 275 | 272 |
| 276 // Modeset the CRTC with its mode in the original controller so that only this | 273 // Modeset the CRTC with its mode in the original controller so that only this |
| 277 // CRTC is affected by the mode. Otherwise it could apply a mode with the same | 274 // CRTC is affected by the mode. Otherwise it could apply a mode with the same |
| 278 // resolution and refresh rate but with different timings to the other CRTC. | 275 // resolution and refresh rate but with different timings to the other CRTC. |
| 279 // TODO(dnicoara): This is hacky, instead the DrmDisplay and CrtcController | 276 // TODO(dnicoara): This is hacky, instead the DrmDisplay and CrtcController |
| 280 // should be merged and picking the mode should be done properly within | 277 // should be merged and picking the mode should be done properly within |
| 281 // HardwareDisplayController. | 278 // HardwareDisplayController. |
| 282 if (ModesetController(*original, (*mirror)->origin(), mode)) { | 279 if (ModesetController(original->get(), (*mirror)->origin(), mode)) { |
| 283 (*mirror)->AddCrtc((*original)->RemoveCrtc(drm, crtc)); | 280 (*mirror)->AddCrtc((*original)->RemoveCrtc(drm, crtc)); |
| 284 controllers_.erase(original); | 281 controllers_.erase(original); |
| 285 return true; | 282 return true; |
| 286 } | 283 } |
| 287 | 284 |
| 288 LOG(ERROR) << "Failed to switch to mirror mode"; | 285 LOG(ERROR) << "Failed to switch to mirror mode"; |
| 289 | 286 |
| 290 // When things go wrong revert back to the previous configuration since | 287 // When things go wrong revert back to the previous configuration since |
| 291 // it is expected that the configuration would not have changed if | 288 // it is expected that the configuration would not have changed if |
| 292 // things fail. | 289 // things fail. |
| 293 ModesetController(*original, last_origin, last_mode); | 290 ModesetController(original->get(), last_origin, last_mode); |
| 294 return false; | 291 return false; |
| 295 } | 292 } |
| 296 | 293 |
| 297 void ScreenManager::UpdateControllerToWindowMapping() { | 294 void ScreenManager::UpdateControllerToWindowMapping() { |
| 298 std::map<DrmWindow*, HardwareDisplayController*> window_to_controller_map; | 295 std::map<DrmWindow*, HardwareDisplayController*> window_to_controller_map; |
| 299 // First create a unique mapping between a window and a controller. Note, a | 296 // First create a unique mapping between a window and a controller. Note, a |
| 300 // controller may be associated with at most 1 window. | 297 // controller may be associated with at most 1 window. |
| 301 for (HardwareDisplayController* controller : controllers_) { | 298 for (const auto& controller : controllers_) { |
| 302 if (controller->IsDisabled()) | 299 if (controller->IsDisabled()) |
| 303 continue; | 300 continue; |
| 304 | 301 |
| 305 DrmWindow* window = FindWindowAt( | 302 DrmWindow* window = FindWindowAt( |
| 306 gfx::Rect(controller->origin(), controller->GetModeSize())); | 303 gfx::Rect(controller->origin(), controller->GetModeSize())); |
| 307 if (!window) | 304 if (!window) |
| 308 continue; | 305 continue; |
| 309 | 306 |
| 310 window_to_controller_map[window] = controller; | 307 window_to_controller_map[window] = controller.get(); |
| 311 } | 308 } |
| 312 | 309 |
| 313 // Apply the new mapping to all windows. | 310 // Apply the new mapping to all windows. |
| 314 for (auto pair : window_map_) { | 311 for (auto pair : window_map_) { |
| 315 auto it = window_to_controller_map.find(pair.second); | 312 auto it = window_to_controller_map.find(pair.second); |
| 316 HardwareDisplayController* controller = nullptr; | 313 HardwareDisplayController* controller = nullptr; |
| 317 if (it != window_to_controller_map.end()) | 314 if (it != window_to_controller_map.end()) |
| 318 controller = it->second; | 315 controller = it->second; |
| 319 | 316 |
| 320 bool should_enable = | 317 bool should_enable = |
| (...skipping 63 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 384 DrmWindow* ScreenManager::FindWindowAt(const gfx::Rect& bounds) const { | 381 DrmWindow* ScreenManager::FindWindowAt(const gfx::Rect& bounds) const { |
| 385 for (auto pair : window_map_) { | 382 for (auto pair : window_map_) { |
| 386 if (pair.second->bounds() == bounds) | 383 if (pair.second->bounds() == bounds) |
| 387 return pair.second; | 384 return pair.second; |
| 388 } | 385 } |
| 389 | 386 |
| 390 return nullptr; | 387 return nullptr; |
| 391 } | 388 } |
| 392 | 389 |
| 393 } // namespace ui | 390 } // namespace ui |
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