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Add nsIGfxInfo::GetMonitor support for Windows. (bug 1175005 part 2, r=jimm)

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--HG--
extra : rebase_source : e82d07880330bbc8c584da01a6359a50a8179862
This commit is contained in:
David Anderson 2015-06-17 23:12:00 -07:00
parent fae0692976
commit 4a507c66a0
2 changed files with 46 additions and 0 deletions
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44
widget/windows/GfxInfo.cpp
View File

@ -17,6 +17,7 @@
#include "mozilla/Preferences.h"
#include "mozilla/gfx/Logging.h"
#include "nsPrintfCString.h"
#include "jsapi.h"
#if defined(MOZ_CRASHREPORTER)
#include "nsExceptionHandler.h"
@ -1211,6 +1212,49 @@ GfxInfo::GetFeatureStatusImpl(int32_t aFeature,
return GfxInfoBase::GetFeatureStatusImpl(aFeature, aStatus, aSuggestedDriverVersion, aDriverInfo, &os);
}
nsresult
GfxInfo::FindMonitors(JSContext* aCx, JS::HandleObject aOutArray)
{
int deviceCount = 0;
for (int deviceIndex = 0;; deviceIndex++) {
DISPLAY_DEVICEA device;
device.cb = sizeof(device);
if (!::EnumDisplayDevicesA(nullptr, deviceIndex, &device, 0)) {
break;
}
if (!(device.StateFlags & DISPLAY_DEVICE_ACTIVE)) {
continue;
}
DEVMODEA mode;
mode.dmSize = sizeof(mode);
mode.dmDriverExtra = 0;
if (!::EnumDisplaySettingsA(device.DeviceName, ENUM_CURRENT_SETTINGS, &mode)) {
continue;
}
JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx));
JS::Rooted<JS::Value> screenWidth(aCx, JS::Int32Value(mode.dmPelsWidth));
JS_SetProperty(aCx, obj, "screenWidth", screenWidth);
JS::Rooted<JS::Value> screenHeight(aCx, JS::Int32Value(mode.dmPelsHeight));
JS_SetProperty(aCx, obj, "screenHeight", screenHeight);
JS::Rooted<JS::Value> refreshRate(aCx, JS::Int32Value(mode.dmDisplayFrequency));
JS_SetProperty(aCx, obj, "refreshRate", refreshRate);
JS::Rooted<JS::Value> pseudoDisplay(aCx,
JS::BooleanValue(!!(device.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER)));
JS_SetProperty(aCx, obj, "pseudoDisplay", pseudoDisplay);
JS::Rooted<JS::Value> element(aCx, JS::ObjectValue(*obj));
JS_SetElement(aCx, aOutArray, deviceCount++, element);
}
return NS_OK;
}
#ifdef DEBUG
// Implement nsIGfxInfoDebug

2
widget/windows/GfxInfo.h
View File

@ -51,6 +51,8 @@ public:
virtual uint32_t OperatingSystemVersion() override { return mWindowsVersion; }
nsresult FindMonitors(JSContext* cx, JS::HandleObject array) override;
NS_DECL_ISUPPORTS_INHERITED
#ifdef DEBUG
NS_DECL_NSIGFXINFODEBUG