diff options
author | Friedemann Kleint <Friedemann.Kleint@digia.com> | 2014-04-30 11:26:43 +0200 |
---|---|---|
committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-04-30 22:43:49 +0200 |
commit | 2e44a9e4918cd6d9d7f33f61330c456249dd9b0f (patch) | |
tree | a4f81644f729077ff54c4b9617a7ae9577b5d435 /src/plugins/platforms | |
parent | ae7bbe34005d704f0c1fd3ca0335095c1df48cde (diff) |
Windows: Start using High DPI API available from Windows 8.1 onwards.
Dynamically load shcore.dll, use SetProcessDpiAwareness() instead
of SetProcessDPIAware() when available. Add command line parameter
to control level.
Task-number: QTBUG-37347
Change-Id: I1259b0943b41e50066e7e3870ed3136afd8f18fe
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Diffstat (limited to 'src/plugins/platforms')
-rw-r--r-- | src/plugins/platforms/windows/qtwindowsglobal.h | 10 | ||||
-rw-r--r-- | src/plugins/platforms/windows/qwindowscontext.cpp | 41 | ||||
-rw-r--r-- | src/plugins/platforms/windows/qwindowscontext.h | 18 | ||||
-rw-r--r-- | src/plugins/platforms/windows/qwindowsintegration.cpp | 11 | ||||
-rw-r--r-- | src/plugins/platforms/windows/qwindowsscreen.cpp | 20 |
5 files changed, 94 insertions, 6 deletions
diff --git a/src/plugins/platforms/windows/qtwindowsglobal.h b/src/plugins/platforms/windows/qtwindowsglobal.h index ee640224cf..3992f2d297 100644 --- a/src/plugins/platforms/windows/qtwindowsglobal.h +++ b/src/plugins/platforms/windows/qtwindowsglobal.h @@ -1,7 +1,7 @@ /**************************************************************************** ** ** Copyright (C) 2013 Samuel Gaist <samuel.gaist@edeltech.ch> -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the plugins of the Qt Toolkit. @@ -117,6 +117,14 @@ enum WindowsEventType // Simplify event types UnknownEvent = 542 }; +// Matches Process_DPI_Awareness (Windows 8.1 onwards), used for SetProcessDpiAwareness() +enum ProcessDpiAwareness +{ + ProcessDpiUnaware, + ProcessSystemDpiAware, + ProcessPerMonitorDpiAware +}; + } // namespace QtWindows inline QtWindows::WindowsEventType windowsEventType(UINT message, WPARAM wParamIn) diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp index a74a7efb41..7643177395 100644 --- a/src/plugins/platforms/windows/qwindowscontext.cpp +++ b/src/plugins/platforms/windows/qwindowscontext.cpp @@ -244,8 +244,26 @@ void QWindowsShell32DLL::init() sHGetImageList = (SHGetImageList)library.resolve("SHGetImageList"); } +QWindowsShcoreDLL::QWindowsShcoreDLL() + : getProcessDpiAwareness(0) + , setProcessDpiAwareness(0) + , getDpiForMonitor(0) +{ +} + +void QWindowsShcoreDLL::init() +{ + if (QSysInfo::windowsVersion() < QSysInfo::WV_WINDOWS8_1) + return; + QSystemLibrary library(QStringLiteral("SHCore")); + getProcessDpiAwareness = (GetProcessDpiAwareness)library.resolve("GetProcessDpiAwareness"); + setProcessDpiAwareness = (SetProcessDpiAwareness)library.resolve("SetProcessDpiAwareness"); + getDpiForMonitor = (GetDpiForMonitor)library.resolve("GetDpiForMonitor"); +} + QWindowsUser32DLL QWindowsContext::user32dll; QWindowsShell32DLL QWindowsContext::shell32dll; +QWindowsShcoreDLL QWindowsContext::shcoredll; #endif // !Q_OS_WINCE @@ -296,9 +314,7 @@ QWindowsContextPrivate::QWindowsContextPrivate() #ifndef Q_OS_WINCE QWindowsContext::user32dll.init(); QWindowsContext::shell32dll.init(); - // Ensure metrics functions report correct data, QTBUG-30063. - if (QWindowsContext::user32dll.setProcessDPIAware) - QWindowsContext::user32dll.setProcessDPIAware(); + QWindowsContext::shcoredll.init(); if (hasTouchSupport(ver) && QWindowsContext::user32dll.initTouch()) m_systemInfo |= QWindowsContext::SI_SupportsTouch; @@ -351,6 +367,25 @@ void QWindowsContext::setTabletAbsoluteRange(int a) #endif } +void QWindowsContext::setProcessDpiAwareness(QtWindows::ProcessDpiAwareness dpiAwareness) +{ +#ifndef Q_OS_WINCE + qCDebug(lcQpaWindows) << __FUNCTION__ << dpiAwareness; + if (QWindowsContext::shcoredll.isValid()) { + const HRESULT hr = QWindowsContext::shcoredll.setProcessDpiAwareness(dpiAwareness); + if (FAILED(hr)) + qWarning() << "SetProcessDpiAwareness failed:" << QWindowsContext::comErrorString(hr); + } else { + if (dpiAwareness != QtWindows::ProcessDpiUnaware && QWindowsContext::user32dll.setProcessDPIAware) { + if (!QWindowsContext::user32dll.setProcessDPIAware()) + qErrnoWarning("SetProcessDPIAware() failed"); + } + } +#else // !Q_OS_WINCE + Q_UNUSED(dpiAwareness) +#endif +} + QWindowsContext *QWindowsContext::instance() { return m_instance; diff --git a/src/plugins/platforms/windows/qwindowscontext.h b/src/plugins/platforms/windows/qwindowscontext.h index f5dbd072c7..d565a5feab 100644 --- a/src/plugins/platforms/windows/qwindowscontext.h +++ b/src/plugins/platforms/windows/qwindowscontext.h @@ -126,6 +126,22 @@ struct QWindowsShell32DLL SHGetStockIconInfo sHGetStockIconInfo; SHGetImageList sHGetImageList; }; + +// Shell scaling library (Windows 8.1 onwards) +struct QWindowsShcoreDLL { + QWindowsShcoreDLL(); + void init(); + inline bool isValid() const { return getProcessDpiAwareness && setProcessDpiAwareness && getDpiForMonitor; } + + typedef HRESULT (WINAPI *GetProcessDpiAwareness)(HANDLE,int); + typedef HRESULT (WINAPI *SetProcessDpiAwareness)(int); + typedef HRESULT (WINAPI *GetDpiForMonitor)(HMONITOR,int,UINT *,UINT *); + + GetProcessDpiAwareness getProcessDpiAwareness; + SetProcessDpiAwareness setProcessDpiAwareness; + GetDpiForMonitor getDpiForMonitor; +}; + #endif // Q_OS_WINCE class QWindowsContext @@ -184,6 +200,7 @@ public: void setWindowCreationContext(const QSharedPointer<QWindowCreationContext> &ctx); void setTabletAbsoluteRange(int a); + void setProcessDpiAwareness(QtWindows::ProcessDpiAwareness dpiAwareness); // Returns a combination of SystemInfoFlags unsigned systemInfo() const; @@ -197,6 +214,7 @@ public: #ifndef Q_OS_WINCE static QWindowsUser32DLL user32dll; static QWindowsShell32DLL shell32dll; + static QWindowsShcoreDLL shcoredll; #endif static QByteArray comErrorString(HRESULT hr); diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp index de34663286..0be9f5c626 100644 --- a/src/plugins/platforms/windows/qwindowsintegration.cpp +++ b/src/plugins/platforms/windows/qwindowsintegration.cpp @@ -167,7 +167,8 @@ struct QWindowsIntegrationPrivate }; static inline unsigned parseOptions(const QStringList ¶mList, - int *tabletAbsoluteRange) + int *tabletAbsoluteRange, + QtWindows::ProcessDpiAwareness *dpiAwareness) { unsigned options = 0; foreach (const QString ¶m, paramList) { @@ -191,6 +192,8 @@ static inline unsigned parseOptions(const QStringList ¶mList, QWindowsContext::verbose = param.right(param.size() - 8).toInt(); } else if (param.startsWith(QLatin1String("tabletabsoluterange="))) { *tabletAbsoluteRange = param.rightRef(param.size() - 20).toInt(); + } else if (param.startsWith(QLatin1String("dpiawareness="))) { + *dpiAwareness = static_cast<QtWindows::ProcessDpiAwareness>(param.rightRef(param.size() - 13).toInt()); } } return options; @@ -201,9 +204,13 @@ QWindowsIntegrationPrivate::QWindowsIntegrationPrivate(const QStringList ¶mL , m_fontDatabase(0) { int tabletAbsoluteRange = -1; - m_options = parseOptions(paramList, &tabletAbsoluteRange); + // Default to per-monitor awareness to avoid being scaled when monitors with different DPI + // are connected to Windows 8.1 + QtWindows::ProcessDpiAwareness dpiAwareness = QtWindows::ProcessPerMonitorDpiAware; + m_options = parseOptions(paramList, &tabletAbsoluteRange, &dpiAwareness); if (tabletAbsoluteRange >= 0) m_context.setTabletAbsoluteRange(tabletAbsoluteRange); + m_context.setProcessDpiAwareness(dpiAwareness); } QWindowsIntegrationPrivate::~QWindowsIntegrationPrivate() diff --git a/src/plugins/platforms/windows/qwindowsscreen.cpp b/src/plugins/platforms/windows/qwindowsscreen.cpp index a6e2aabaf0..4d6b822793 100644 --- a/src/plugins/platforms/windows/qwindowsscreen.cpp +++ b/src/plugins/platforms/windows/qwindowsscreen.cpp @@ -68,6 +68,21 @@ static inline QDpi deviceDPI(HDC hdc) return QDpi(GetDeviceCaps(hdc, LOGPIXELSX), GetDeviceCaps(hdc, LOGPIXELSY)); } +#ifndef Q_OS_WINCE + +static inline QDpi monitorDPI(HMONITOR hMonitor) +{ + if (QWindowsContext::shcoredll.isValid()) { + UINT dpiX; + UINT dpiY; + if (SUCCEEDED(QWindowsContext::shcoredll.getDpiForMonitor(hMonitor, 0, &dpiX, &dpiY))) + return QDpi(dpiX, dpiY); + } + return QDpi(0, 0); +} + +#endif // !Q_OS_WINCE + static inline QSizeF deviceSizeMM(const QSize &pixels, const QDpi &dpi) { const qreal inchToMM = 25.4; @@ -110,7 +125,12 @@ BOOL QT_WIN_CALLBACK monitorEnumCallback(HMONITOR hMonitor, HDC, LPRECT, LPARAM HDC hdc = CreateDC(info.szDevice, NULL, NULL, NULL); #endif if (hdc) { +#ifndef Q_OS_WINCE + const QDpi dpi = monitorDPI(hMonitor); + data.dpi = dpi.first ? dpi : deviceDPI(hdc); +#else data.dpi = deviceDPI(hdc); +#endif data.depth = GetDeviceCaps(hdc, BITSPIXEL); data.format = data.depth == 16 ? QImage::Format_RGB16 : QImage::Format_RGB32; data.physicalSizeMM = QSizeF(GetDeviceCaps(hdc, HORZSIZE), GetDeviceCaps(hdc, VERTSIZE)); |