1 // Copyright 2013 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 "chrome/browser/extensions/api/system_display/display_info_provider.h" 6 7 #include <windows.h> 8 9 #include "base/strings/utf_string_conversions.h" 10 #include "ui/base/win/dpi.h" 11 #include "ui/gfx/display.h" 12 #include "ui/gfx/size.h" 13 14 namespace extensions { 15 16 using api::system_display::Bounds; 17 using api::system_display::DisplayUnitInfo; 18 19 namespace { 20 21 BOOL CALLBACK EnumMonitorCallback(HMONITOR monitor, 22 HDC hdc, 23 LPRECT rect, 24 LPARAM data) { 25 DisplayInfo* display_info = 26 reinterpret_cast<DisplayInfo*>(data); 27 DCHECK(display_info); 28 29 linked_ptr<DisplayUnitInfo> unit(new DisplayUnitInfo); 30 31 MONITORINFOEX monitor_info; 32 ZeroMemory(&monitor_info, sizeof(MONITORINFOEX)); 33 monitor_info.cbSize = sizeof(monitor_info); 34 GetMonitorInfo(monitor, &monitor_info); 35 36 DISPLAY_DEVICE device; 37 device.cb = sizeof(device); 38 if (!EnumDisplayDevices(monitor_info.szDevice, 0, &device, 0)) 39 return FALSE; 40 41 gfx::Display display(0, gfx::Rect(monitor_info.rcMonitor)); 42 display.set_work_area(gfx::Rect(monitor_info.rcWork)); 43 44 gfx::Size dpi(ui::GetDPI()); 45 unit->id = WideToUTF8(device.DeviceID); 46 unit->name = WideToUTF8(device.DeviceString); 47 unit->is_primary = monitor_info.dwFlags & MONITORINFOF_PRIMARY ? true : false; 48 49 // TODO(hongbo): Figure out how to determine whether the display monitor is 50 // internal or not. 51 unit->is_internal = false; 52 unit->is_enabled = device.StateFlags & DISPLAY_DEVICE_ACTIVE ? true : false; 53 unit->dpi_x = dpi.width(); 54 unit->dpi_y = dpi.height(); 55 unit->bounds.left = display.bounds().x(); 56 unit->bounds.top = display.bounds().y(); 57 unit->bounds.width = display.bounds().width(); 58 unit->bounds.height = display.bounds().height(); 59 unit->work_area.left = display.work_area().x(); 60 unit->work_area.top = display.work_area().y(); 61 unit->work_area.width = display.work_area().width(); 62 unit->work_area.height = display.work_area().height(); 63 display_info->push_back(unit); 64 65 return TRUE; 66 } 67 68 } // namespace 69 70 void DisplayInfoProvider::RequestInfo(const RequestInfoCallback& callback) { 71 // Redirect the request to a worker pool thread. 72 StartQueryInfo(callback); 73 } 74 75 void DisplayInfoProvider::SetInfo( 76 const std::string& display_id, 77 const api::system_display::DisplayProperties& info, 78 const SetInfoCallback& callback) { 79 base::MessageLoopProxy::current()->PostTask( 80 FROM_HERE, 81 base::Bind(callback, false, "Not implemented")); 82 } 83 84 bool DisplayInfoProvider::QueryInfo() { 85 info_.clear(); 86 87 if (EnumDisplayMonitors(NULL, NULL, EnumMonitorCallback, 88 reinterpret_cast<LPARAM>(&info_))) 89 return true; 90 return false; 91 } 92 93 } // namespace extensions 94
