| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| ** This file is part of the ActiveQt framework of the Qt Toolkit. |
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| |
| #include "qaxutils_p.h" |
| |
| #include <QtWidgets/qwidget.h> |
| #include <QtGui/qpixmap.h> |
| #include <QtGui/qregion.h> |
| #include <QtGui/qwindow.h> |
| #include <QtGui/qguiapplication.h> |
| #include <private/qhighdpiscaling_p.h> |
| #include <qpa/qplatformnativeinterface.h> |
| #include <qpa/qplatformpixmap.h> |
| #include <QtGui/private/qpixmap_raster_p.h> |
| #include <QtCore/qscopedpointer.h> |
| #include <QtCore/qrect.h> |
| |
| #include <QtCore/qdebug.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| static inline QWindow *windowForWidget(QWidget *widget) |
| { |
| if (QWindow *window = widget->windowHandle()) |
| return window; |
| if (QWidget *nativeParent = widget->nativeParentWidget()) |
| return nativeParent->windowHandle(); |
| return nullptr; |
| } |
| |
| HWND hwndForWidget(QWidget *widget) |
| { |
| if (QWindow *window = windowForWidget(widget)) |
| return static_cast<HWND> (QGuiApplication::platformNativeInterface()->nativeResourceForWindow("handle", window)); |
| return nullptr; |
| } |
| |
| // Code courtesy of QWindowsXPStyle |
| static void addRectToHrgn(HRGN &winRegion, const QRect &r) |
| { |
| HRGN rgn = CreateRectRgn(r.left(), r.top(), r.x() + r.width(), r.y() + r.height()); |
| if (rgn) { |
| HRGN dest = CreateRectRgn(0,0,0,0); |
| int result = CombineRgn(dest, winRegion, rgn, RGN_OR); |
| if (result) { |
| DeleteObject(winRegion); |
| winRegion = dest; |
| } |
| DeleteObject(rgn); |
| } |
| } |
| |
| HRGN qaxHrgnFromQRegion(const QRegion ®ion, const QWindow *window) |
| { |
| HRGN hRegion = CreateRectRgn(0, 0, 0, 0); |
| for (const QRect &rect : QHighDpi::toNativeLocalRegion(region, window)) |
| addRectToHrgn(hRegion, rect); |
| return hRegion; |
| } |
| |
| // HIMETRICS scaling |
| static const qreal himetricsPerInch = 2540; |
| |
| static inline long qaxMapPixToLogHiMetrics(int x, qreal logicalDpi, qreal factor) |
| { |
| return qRound((qreal(x) * himetricsPerInch * factor) / logicalDpi); |
| } |
| |
| static inline int qaxMapLogHiMetricsToPix(long x, qreal logicalDpi, qreal factor) |
| { |
| return qRound(logicalDpi * qreal(x) / (himetricsPerInch * factor)); |
| } |
| |
| SIZEL qaxMapPixToLogHiMetrics(const QSize &s, const QDpi &d, const QWindow *w) |
| { |
| const qreal factor = QHighDpiScaling::factor(w); |
| const SIZEL result = { |
| qaxMapPixToLogHiMetrics(s.width(), d.first, factor), |
| qaxMapPixToLogHiMetrics(s.height(), d.second, factor) |
| }; |
| return result; |
| } |
| |
| QSize qaxMapLogHiMetricsToPix(const SIZEL &s, const QDpi &d, const QWindow *w) |
| { |
| const qreal factor = QHighDpiScaling::factor(w); |
| const QSize result(qaxMapLogHiMetricsToPix(s.cx, d.first, factor), |
| qaxMapLogHiMetricsToPix(s.cy, d.second, factor)); |
| return result; |
| } |
| |
| // Cache logical DPI in case High DPI scaling is active (which case |
| // the fake logical DPI it calculates is not suitable). |
| |
| static QDpi cachedSystemLogicalDpi(-1, -1); |
| |
| void qaxClearCachedSystemLogicalDpi() // Call from WM_DISPLAYCHANGE |
| { |
| cachedSystemLogicalDpi = QDpi(-1, -1); |
| } |
| |
| static inline QDpi systemLogicalDpi() |
| { |
| if (cachedSystemLogicalDpi.first < 0) { |
| const HDC displayDC = GetDC(nullptr); |
| cachedSystemLogicalDpi = QDpi(GetDeviceCaps(displayDC, LOGPIXELSX), GetDeviceCaps(displayDC, LOGPIXELSY)); |
| ReleaseDC(nullptr, displayDC); |
| } |
| return cachedSystemLogicalDpi; |
| } |
| |
| static inline QDpi paintDeviceLogicalDpi(const QPaintDevice *d) |
| { |
| return QDpi(d->logicalDpiX(), d->logicalDpiY()); |
| } |
| |
| #ifdef QT_WIDGETS_LIB |
| |
| SIZEL qaxMapPixToLogHiMetrics(const QSize &s, const QWidget *widget) |
| { |
| return qaxMapPixToLogHiMetrics(s, |
| QHighDpiScaling::isActive() ? systemLogicalDpi() : paintDeviceLogicalDpi(widget), |
| widget->windowHandle()); |
| } |
| |
| QSize qaxMapLogHiMetricsToPix(const SIZEL &s, const QWidget *widget) |
| { |
| return qaxMapLogHiMetricsToPix(s, |
| QHighDpiScaling::isActive() ? systemLogicalDpi() : paintDeviceLogicalDpi(widget), |
| widget->windowHandle()); |
| } |
| |
| QPoint qaxFromNativePosition(const QWidget *w, const QPoint &nativePos) |
| { |
| const qreal factor = QHighDpiScaling::factor(w->windowHandle()); |
| return qFuzzyCompare(factor, 1) |
| ? nativePos : (QPointF(nativePos) / factor).toPoint(); |
| } |
| |
| QPoint qaxNativeWidgetPosition(const QWidget *w) |
| { |
| return qaxFromNativePosition(w, w->geometry().topLeft()); |
| } |
| |
| QSize qaxToNativeSize(const QWidget *w, const QSize &size) |
| { |
| const qreal factor = QHighDpiScaling::factor(w->windowHandle()); |
| return qFuzzyCompare(factor, 1) ? size : (QSizeF(size) * factor).toSize(); |
| } |
| |
| QSize qaxNativeWidgetSize(const QWidget *w) |
| { |
| return qaxToNativeSize(w, w->size()); |
| } |
| |
| QSize qaxFromNativeSize(const QWidget *w, const QSize &size) |
| { |
| const qreal factor = QHighDpiScaling::factor(w->windowHandle()); |
| return qFuzzyCompare(factor, 1) ? size : (QSizeF(size) / factor).toSize(); |
| } |
| |
| RECT qaxNativeWidgetRect(const QWidget *w) |
| { |
| return QHighDpiScaling::isActive() |
| ? qaxQRect2Rect(QRect(qaxNativeWidgetPosition(w), qaxNativeWidgetSize(w))) |
| : qaxQRect2Rect(w->geometry()); |
| } |
| |
| QRect qaxFromNativeRect(const RECT &r, const QWidget *w) |
| { |
| const QRect qr = qaxRect2QRect(r); |
| const qreal factor = QHighDpiScaling::factor(w->windowHandle()); |
| return qFuzzyCompare(factor, 1) |
| ? qr |
| : QRect((QPointF(qr.topLeft()) / factor).toPoint(), (QSizeF(qr.size()) / factor).toSize()); |
| } |
| |
| HRGN qaxHrgnFromQRegion(const QRegion ®ion, const QWidget *widget) |
| { |
| return qaxHrgnFromQRegion(region, widget->windowHandle()); |
| } |
| |
| #endif // QT_WIDGETS_LIB |
| |
| QByteArray qaxTypeInfoName(ITypeInfo *typeInfo, MEMBERID memId) |
| { |
| QByteArray result; |
| BSTR names; |
| UINT cNames = 0; |
| typeInfo->GetNames(memId, &names, 1, &cNames); |
| if (cNames && names) { |
| result = QString::fromWCharArray(names).toLatin1(); |
| SysFreeString(names); |
| } |
| return result; |
| } |
| |
| QByteArrayList qaxTypeInfoNames(ITypeInfo *typeInfo, MEMBERID memId) |
| { |
| QByteArrayList result; |
| BSTR bstrNames[256]; |
| UINT maxNames = 255; |
| UINT maxNamesOut = 0; |
| typeInfo->GetNames(memId, reinterpret_cast<BSTR *>(&bstrNames), maxNames, &maxNamesOut); |
| result.reserve(maxNamesOut); |
| for (UINT p = 0; p < maxNamesOut; ++p) { |
| result.append(QString::fromWCharArray(bstrNames[p]).toLatin1()); |
| SysFreeString(bstrNames[p]); |
| } |
| return result; |
| } |
| |
| QT_END_NAMESPACE |