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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 "ui/aura/display_change_observer_x11.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <map> | |
| 9 #include <set> | |
| 10 #include <vector> | |
| 11 | |
| 12 #include <X11/extensions/Xrandr.h> | |
| 13 | |
| 14 #include "base/message_pump_aurax11.h" | |
| 15 #include "ui/aura/env.h" | |
| 16 #include "ui/aura/display_manager.h" | |
| 17 #include "ui/base/x/x11_util.h" | |
| 18 #include "ui/compositor/dip_util.h" | |
| 19 #include "ui/gfx/display.h" | |
| 20 | |
| 21 namespace aura { | |
| 22 namespace internal { | |
| 23 | |
| 24 namespace { | |
| 25 | |
| 26 // The DPI threshold to detect high density screen. | |
| 27 // Higher DPI than this will use device_scale_factor=2. | |
| 28 // Note: This value has to be kept in sync with the mouse/touchpad driver | |
| 29 // which controls mouse pointer acceleration. If you need to update this value, | |
| 30 // please update the bug (crosbug.com/31628) first and make sure that the | |
| 31 // driver will use the same value. | |
| 32 // This value also has to be kept in sync with the value in | |
| 33 // chromeos/display/output_configurator.cc. See crbug.com/130188 | |
| 34 const unsigned int kHighDensityDIPThreshold = 160; | |
| 35 | |
| 36 // 1 inch in mm. | |
| 37 const float kInchInMm = 25.4f; | |
| 38 | |
| 39 XRRModeInfo* FindMode(XRRScreenResources* screen_resources, XID current_mode) { | |
| 40 for (int m = 0; m < screen_resources->nmode; m++) { | |
| 41 XRRModeInfo *mode = &screen_resources->modes[m]; | |
| 42 if (mode->id == current_mode) | |
| 43 return mode; | |
| 44 } | |
| 45 return NULL; | |
| 46 } | |
| 47 | |
| 48 bool CompareDisplayY(const gfx::Display& lhs, const gfx::Display& rhs) { | |
| 49 return lhs.bounds_in_pixel().y() < rhs.bounds_in_pixel().y(); | |
| 50 } | |
| 51 | |
| 52 // A list of bogus sizes in mm that X detects and should be ignored. | |
| 53 // See crbug.com/136533. | |
| 54 const unsigned long kInvalidDisplaySizeList[][2] = { | |
| 55 {160, 100}, | |
| 56 {160, 90}, | |
| 57 {50, 40}, | |
| 58 {40, 30}, | |
| 59 }; | |
| 60 | |
| 61 // Returns true if the size nifo in the output_info isn't valid | |
| 62 // and should be ignored. | |
| 63 bool ShouldIgnoreSize(XRROutputInfo *output_info) { | |
| 64 if (output_info->mm_width == 0 || output_info->mm_height == 0) { | |
| 65 LOG(WARNING) << "No display size available"; | |
| 66 return true; | |
| 67 } | |
| 68 for (unsigned long i = 0 ; i < arraysize(kInvalidDisplaySizeList); ++i) { | |
| 69 const unsigned long* size = kInvalidDisplaySizeList[i]; | |
| 70 if (output_info->mm_width == size[0] && output_info->mm_height == size[1]) { | |
| 71 LOG(WARNING) << "Black listed display size detected:" | |
| 72 << size[0] << "x" << size[1]; | |
| 73 return true; | |
| 74 } | |
| 75 } | |
| 76 return false; | |
| 77 } | |
| 78 | |
| 79 } // namespace | |
| 80 | |
| 81 DisplayChangeObserverX11::DisplayChangeObserverX11() | |
| 82 : xdisplay_(base::MessagePumpAuraX11::GetDefaultXDisplay()), | |
| 83 x_root_window_(DefaultRootWindow(xdisplay_)), | |
| 84 xrandr_event_base_(0) { | |
| 85 int error_base_ignored; | |
| 86 XRRQueryExtension(xdisplay_, &xrandr_event_base_, &error_base_ignored); | |
| 87 base::MessagePumpAuraX11::Current()->AddDispatcherForRootWindow(this); | |
| 88 } | |
| 89 | |
| 90 DisplayChangeObserverX11::~DisplayChangeObserverX11() { | |
| 91 base::MessagePumpAuraX11::Current()->RemoveDispatcherForRootWindow(this); | |
| 92 } | |
| 93 | |
| 94 bool DisplayChangeObserverX11::Dispatch(const base::NativeEvent& event) { | |
| 95 if (event->type - xrandr_event_base_ == RRScreenChangeNotify) { | |
| 96 NotifyDisplayChange(); | |
| 97 } | |
| 98 return true; | |
| 99 } | |
| 100 | |
| 101 void DisplayChangeObserverX11::NotifyDisplayChange() { | |
| 102 if (!DisplayManager::use_fullscreen_host_window()) | |
| 103 return; // Use the default display that display manager determined. | |
| 104 | |
| 105 XRRScreenResources* screen_resources = | |
| 106 XRRGetScreenResources(xdisplay_, x_root_window_); | |
| 107 std::map<XID, XRRCrtcInfo*> crtc_info_map; | |
| 108 | |
| 109 for (int c = 0; c < screen_resources->ncrtc; c++) { | |
| 110 XID crtc_id = screen_resources->crtcs[c]; | |
| 111 XRRCrtcInfo *crtc_info = | |
| 112 XRRGetCrtcInfo(xdisplay_, screen_resources, crtc_id); | |
| 113 crtc_info_map[crtc_id] = crtc_info; | |
| 114 } | |
| 115 | |
| 116 std::vector<gfx::Display> displays; | |
| 117 std::set<int> y_coords; | |
| 118 std::set<int64> ids; | |
| 119 for (int o = 0; o < screen_resources->noutput; o++) { | |
| 120 XRROutputInfo *output_info = | |
| 121 XRRGetOutputInfo(xdisplay_, | |
| 122 screen_resources, | |
| 123 screen_resources->outputs[o]); | |
| 124 if (output_info->connection != RR_Connected) { | |
| 125 XRRFreeOutputInfo(output_info); | |
| 126 continue; | |
| 127 } | |
| 128 XRRCrtcInfo* crtc_info = crtc_info_map[output_info->crtc]; | |
| 129 if (!crtc_info) { | |
| 130 LOG(WARNING) << "Crtc not found for output: output=" << o; | |
| 131 continue; | |
| 132 } | |
| 133 XRRModeInfo* mode = FindMode(screen_resources, crtc_info->mode); | |
| 134 if (!mode) { | |
| 135 LOG(WARNING) << "Could not find a mode for the output: output=" << o; | |
| 136 continue; | |
| 137 } | |
| 138 // Mirrored monitors have the same y coordinates. | |
| 139 if (y_coords.find(crtc_info->y) != y_coords.end()) | |
| 140 continue; | |
| 141 displays.push_back(gfx::Display()); | |
| 142 | |
| 143 float device_scale_factor = 1.0f; | |
| 144 if (!ShouldIgnoreSize(output_info) && | |
| 145 (kInchInMm * mode->width / output_info->mm_width) > | |
| 146 kHighDensityDIPThreshold) { | |
| 147 device_scale_factor = 2.0f; | |
| 148 } | |
| 149 displays.back().SetScaleAndBounds( | |
| 150 device_scale_factor, | |
| 151 gfx::Rect(crtc_info->x, crtc_info->y, mode->width, mode->height)); | |
| 152 | |
| 153 uint16 manufacturer_id = 0; | |
| 154 uint32 serial_number = 0; | |
| 155 if (ui::GetOutputDeviceData(screen_resources->outputs[o], &manufacturer_id, | |
| 156 &serial_number, NULL) && manufacturer_id != 0) { | |
| 157 // An ID based on display's index will be assigned later if this call | |
| 158 // fails. | |
| 159 int64 new_id = gfx::Display::GetID(manufacturer_id, serial_number); | |
| 160 if (ids.find(new_id) == ids.end()) { | |
| 161 displays.back().set_id(new_id); | |
| 162 ids.insert(new_id); | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 y_coords.insert(crtc_info->y); | |
| 167 XRRFreeOutputInfo(output_info); | |
| 168 } | |
| 169 | |
| 170 // Free all allocated resources. | |
| 171 for (std::map<XID, XRRCrtcInfo*>::const_iterator iter = crtc_info_map.begin(); | |
| 172 iter != crtc_info_map.end(); ++iter) { | |
| 173 XRRFreeCrtcInfo(iter->second); | |
| 174 } | |
| 175 XRRFreeScreenResources(screen_resources); | |
| 176 | |
| 177 // PowerManager lays out the outputs vertically. Sort them by Y | |
| 178 // coordinates. | |
| 179 std::sort(displays.begin(), displays.end(), CompareDisplayY); | |
| 180 int64 id = 0; | |
| 181 for (std::vector<gfx::Display>::iterator iter = displays.begin(); | |
| 182 iter != displays.end(); ++iter) { | |
| 183 if (iter->id() == gfx::Display::kInvalidDisplayID) { | |
| 184 iter->set_id(id); | |
| 185 ++id; | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 Env::GetInstance()->display_manager()->OnNativeDisplaysChanged(displays); | |
| 190 } | |
| 191 | |
| 192 } // namespace internal | |
| 193 } // namespace aura | |
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Chromium Code Reviews
Issue 11363124:
Move DisplayManager and DisplayChangeObserverX11 from aura to ash. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src