QWindowsVistaStylePrivate Class Reference

#include <qwindowsvistastyle_p_p.h>

Inheritance diagram for QWindowsVistaStylePrivate:

Collaboration diagram for QWindowsVistaStylePrivate:

Public Types
enum	Theme {   ButtonTheme , ComboboxTheme , EditTheme , HeaderTheme ,   ListViewTheme , MenuTheme , ProgressTheme , RebarTheme ,   ScrollBarTheme , SpinTheme , TabTheme , TaskDialogTheme ,   ToolBarTheme , ToolTipTheme , TrackBarTheme , WindowTheme ,   StatusTheme , VistaTreeViewTheme , NThemes }

Public Member Functions
	QWindowsVistaStylePrivate ()
	~QWindowsVistaStylePrivate ()
void	init (bool force=false)
void	cleanup (bool force=false)
void	cleanupHandleMap ()
HBITMAP	buffer (int w=0, int h=0)
HDC	bufferHDC ()
bool	isTransparent (QWindowsThemeData &QWindowsThemeData)
QRegion	region (QWindowsThemeData &QWindowsThemeData)
bool	drawBackground (QWindowsThemeData &QWindowsThemeData, qreal correctionFactor=1)
bool	drawBackgroundThruNativeBuffer (QWindowsThemeData &QWindowsThemeData, qreal aditionalDevicePixelRatio, qreal correctionFactor)
bool	drawBackgroundDirectly (HDC dc, QWindowsThemeData &QWindowsThemeData, qreal aditionalDevicePixelRatio)
bool	hasAlphaChannel (const QRect &rect)
bool	fixAlphaChannel (const QRect &rect)
bool	swapAlphaChannel (const QRect &rect, bool allPixels=false)
QTime	animationTime () const
bool	transitionsEnabled () const

Static Public Member Functions
static HTHEME	createTheme (int theme, HWND hwnd)
static QString	themeName (int theme)
static bool	hasTheme (int theme)
static bool	isItemViewDelegateLineEdit (const QWidget *widget)
static int	pixelMetricFromSystemDp (QStyle::PixelMetric pm, const QStyleOption *option=nullptr, const QWidget *widget=nullptr)
static int	fixedPixelMetric (QStyle::PixelMetric pm)
static bool	isLineEditBaseColorSet (const QStyleOption *option, const QWidget *widget)
static HWND	winId (const QWidget *widget)
static bool	useVista (bool update=false)
static QBackingStore *	backingStoreForWidget (const QWidget *widget)
static HDC	hdcForWidgetBackingStore (const QWidget *widget)
static HTHEME	openThemeForPrimaryScreenDpi (HWND hwnd, const wchar_t *name)

Public Attributes
QRgb	groupBoxTextColor = 0
QRgb	groupBoxTextColorDisabled = 0
QRgb	sliderTickColor = 0
bool	hasInitColors = false
QIcon	dockFloat
QIcon	dockClose

Detailed Description

Definition at line 84 of file qwindowsvistastyle_p_p.h.

Member Enumeration Documentation

Theme

enum QWindowsVistaStylePrivate::Theme

Enumerator
ButtonTheme
ComboboxTheme
EditTheme
HeaderTheme
ListViewTheme
MenuTheme
ProgressTheme
RebarTheme
ScrollBarTheme
SpinTheme
TabTheme
TaskDialogTheme
ToolBarTheme
ToolTipTheme
TrackBarTheme
WindowTheme
StatusTheme
VistaTreeViewTheme
NThemes

Definition at line 89 of file qwindowsvistastyle_p_p.h.

Constructor & Destructor Documentation

QWindowsVistaStylePrivate()

QWindowsVistaStylePrivate::QWindowsVistaStylePrivate ( )

inline

Definition at line 111 of file qwindowsvistastyle_p_p.h.

References init().

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~QWindowsVistaStylePrivate()

QWindowsVistaStylePrivate::~QWindowsVistaStylePrivate ( )

inline

Definition at line 114 of file qwindowsvistastyle_p_p.h.

References cleanup().

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Member Function Documentation

animationTime()

QTime QWindowsVistaStylePrivate::animationTime

(

)

const

Animations are started at a frame that is based on the current time, which makes it impossible to run baseline tests with this style. Allow overriding through a dynamic property.

Definition at line 1076 of file qwindowsvistastyle.cpp.

References QTime::currentTime().

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backingStoreForWidget()

QBackingStore * QWindowsVistaStylePrivate::backingStoreForWidget ( const QWidget *  widget )

static

Definition at line 357 of file qwindowsvistastyle.cpp.

References QWidget::backingStore(), QWidget::nativeParentWidget(), and widget.

Referenced by drawBackground(), and hdcForWidgetBackingStore().

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buffer()

HBITMAP QWindowsVistaStylePrivate::buffer	(	int	w = 0,
		int	h = 0
	)

Returns a native buffer (DIB section) of at least the size of ( x , y ). The buffer has a 32 bit depth, to not lose the alpha values on proper alpha-pixmaps.

Definition at line 440 of file qwindowsvistastyle.cpp.

References Q_UNLIKELY, qDebug, qErrnoWarning(), and qMax().

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bufferHDC()

HDC QWindowsVistaStylePrivate::bufferHDC ( )

inline

Definition at line 134 of file qwindowsvistastyle_p_p.h.

Referenced by drawBackgroundThruNativeBuffer(), and region().

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cleanup()

void QWindowsVistaStylePrivate::cleanup

(

bool

force = false

)

Definition at line 193 of file qwindowsvistastyle.cpp.

References cleanupHandleMap().

Referenced by ~QWindowsVistaStylePrivate().

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cleanupHandleMap()

void QWindowsVistaStylePrivate::cleanupHandleMap

(

)

Definition at line 327 of file qwindowsvistastyle.cpp.

Referenced by cleanup().

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createTheme()

HTHEME QWindowsVistaStylePrivate::createTheme ( int  theme, HWND  hwnd  )

static

Definition at line 338 of file qwindowsvistastyle.cpp.

References NThemes, openThemeForPrimaryScreenDpi(), Q_UNLIKELY, qErrnoWarning(), qPrintable, qWarning, themeName(), themeNames, and VistaTreeViewTheme.

Referenced by QWindowsThemeData::handle().

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drawBackground()

bool QWindowsVistaStylePrivate::drawBackground	(	QWindowsThemeData &	themeData,
		qreal	correctionFactor = 1
	)

Main theme drawing function. Determines the correct lowlevel drawing method depending on several factors. Use drawBackgroundThruNativeBuffer() if:

• Painter does not have an HDC
• Theme part is flipped (mirrored horizontally) else use drawBackgroundDirectly().

  Note

  drawBackgroundThruNativeBuffer() can return false for large sizes due to buffer()/CreateDIBSection() failing.

Definition at line 665 of file qwindowsvistastyle.cpp.

References backingStoreForWidget(), ComplexTransform, QPainter::device(), QPaintDevice::devicePixelRatio(), QPainter::deviceTransform(), QPaintDevice::devType(), drawBackgroundDirectly(), drawBackgroundThruNativeBuffer(), hdcForWidgetBackingStore(), QInternal::Image, QWindowsThemeData::invertPixels, QPainter::isActive(), QRect::isEmpty(), isFullyOpaque(), QWindowsThemeData::mirrorVertically, QPainter::opacity(), QPaintEngine::paintDevice(), QPainter::paintEngine(), QWindowsThemeData::painter, painter, Q_ASSERT_X, qFuzzyCompare(), QWindowsThemeData::rect, QPainter::restore(), QWindowsThemeData::rotate, QPainter::save(), Qt::WA_TranslucentBackground, QInternal::Widget, QWindowsThemeData::widget, and window().

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drawBackgroundDirectly()

bool QWindowsVistaStylePrivate::drawBackgroundDirectly	(	HDC	dc,
		QWindowsThemeData &	themeData,
		qreal	additionalDevicePixelRatio
	)

This function draws the theme parts directly to the paintengines HDC. Do not use this if you need to perform other transformations on the resulting data.

Definition at line 724 of file qwindowsvistastyle.cpp.

References area(), QRegion::boundingRect(), QPainter::clipRegion(), QPainter::deviceTransform(), deviceTransform(), QWindowsThemeData::handle(), QPainter::hasClipping(), QRegion::isEmpty(), QWindowsThemeData::mirrorHorizontally, QWindowsThemeData::noBorder, QWindowsThemeData::noContent, QPainter::paintEngine(), QWindowsThemeData::painter, painter, QWindowsThemeData::partId, qPrintable, qt_hrgn_from_qregion(), QWindowsThemeData::rect, scaleRect(), scaleRegion(), QWindowsThemeData::stateId, QPaintEngine::systemClip(), QPointF::toPoint(), QRectF::toRect(), QWindowsThemeData::toRECT(), QRegion::translated(), and QRectF::translated().

Referenced by drawBackground().

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drawBackgroundThruNativeBuffer()

bool QWindowsVistaStylePrivate::drawBackgroundThruNativeBuffer	(	QWindowsThemeData &	themeData,
		qreal	additionalDevicePixelRatio,
		qreal	correctionFactor
	)

This function uses a secondary Native doublebuffer for painting parts. It should only be used when the painteengine doesn't provide a proper HDC for direct painting (e.g. when doing a grabWidget(), painting to other pixmaps etc), or when special transformations are needed (e.g. flips (horizontal mirroring only, vertical are handled by the theme engine).

correctionFactor is an additional factor used to scale up controls that are too small on High DPI screens, as has been observed for WP_MDICLOSEBUTTON, WP_MDIRESTOREBUTTON, WP_MDIMINBUTTON (QTBUG-75927).

Definition at line 776 of file qwindowsvistastyle.cpp.

References QString::append(), area(), bufferHDC(), QPainter::clipRegion(), QImage::copy(), QPixmap::copy(), ThemeMapData::dataValid, QPainter::drawImage(), QPainter::drawPixmap(), QPixmapCache::find(), fixAlphaChannel(), QImage::Format_ARGB32_Premultiplied, QImage::Format_RGB32, QPixmap::fromImage(), QWindowsThemeData::handle(), hasAlpha(), hasAlphaChannel(), QRect::height(), QRectF::height(), QHash< Key, T >::insert(), QPixmapCache::insert(), Qt::IntersectClip, QWindowsThemeData::invertPixels, QRegion::isEmpty(), isTransparent(), Qt::KeepAspectRatio, MaskAlpha, QImage::mirrored(), QWindowsThemeData::mirrorHorizontally, QWindowsThemeData::mirrorVertically, QRectF::moveTo(), NoAlpha, QWindowsThemeData::noBorder, QWindowsThemeData::noContent, QString::number(), QWindowsThemeData::painter, painter, QWindowsThemeData::partId, pix, qFuzzyCompare(), qPrintable, QStringLiteral, RealAlpha, QWindowsThemeData::rect, rect, region(), QTransform::rotate(), QWindowsThemeData::rotate, scaleRect(), scaleRegion(), QPainter::setClipping(), QPainter::setClipRegion(), QRectF::size(), Qt::SmoothTransformation, QWindowsThemeData::stateId, swapAlphaChannel(), QWindowsThemeData::theme, themeName(), QPixmap::toImage(), QRectF::topLeft(), QRectF::toRect(), QWindowsThemeData::toRECT(), QImage::transformed(), UnknownAlpha, QHash< Key, T >::value(), QRect::width(), QRectF::width(), QRect::x(), and QRect::y().

Referenced by drawBackground().

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fixAlphaChannel()

bool QWindowsVistaStylePrivate::fixAlphaChannel

(

const QRect &

rect

)

When the theme engine paints both a true alpha pixmap and a glyph into our buffer, the glyph might not contain a proper alpha value. The rule of thumb for premultiplied pixmaps is that the color values of a pixel can never be higher than the alpha values, so we use this to our advantage here, and fix all instances where this occurs.

Definition at line 594 of file qwindowsvistastyle.cpp.

References qAlpha(), qBlue(), qGreen(), qRed(), and rect.

Referenced by drawBackgroundThruNativeBuffer().

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fixedPixelMetric()

int QWindowsVistaStylePrivate::fixedPixelMetric ( QStyle::PixelMetric  pm )

static

Definition at line 277 of file qwindowsvistastyle.cpp.

References QStyle::PM_DockWidgetTitleBarButtonMargin, QStyle::PM_MenuHMargin, QStyle::PM_MenuPanelWidth, QStyle::PM_MenuVMargin, and QStyle::PM_ScrollBarSliderMin.

Referenced by QWindowsVistaStyle::pixelMetric().

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hasAlphaChannel()

bool QWindowsVistaStylePrivate::hasAlphaChannel

(

const QRect &

rect

)

Returns true if the native doublebuffer contains pixels with varying alpha value.

Definition at line 565 of file qwindowsvistastyle.cpp.

References rect.

Referenced by drawBackgroundThruNativeBuffer().

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hasTheme()

static bool QWindowsVistaStylePrivate::hasTheme ( int  theme )

inlinestatic

Definition at line 119 of file qwindowsvistastyle_p_p.h.

References NThemes.

hdcForWidgetBackingStore()

HDC QWindowsVistaStylePrivate::hdcForWidgetBackingStore ( const QWidget *  widget )

static

Definition at line 367 of file qwindowsvistastyle.cpp.

References backingStoreForWidget(), QPlatformNativeInterface::nativeResourceForBackingStore(), QGuiApplication::platformNativeInterface(), QByteArrayLiteral, and widget.

Referenced by drawBackground(), and QWindowsThemeData::mask().

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init()

void QWindowsVistaStylePrivate::init

(

bool

force = false

)

Definition at line 179 of file qwindowsvistastyle.cpp.

References NThemes, and useVista().

Referenced by QWindowsVistaStylePrivate().

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isItemViewDelegateLineEdit()

bool QWindowsVistaStylePrivate::isItemViewDelegateLineEdit ( const QWidget *  widget )

static

Definition at line 383 of file qwindowsvistastyle.cpp.

References QObject::inherits(), QWidget::isWindow(), QWidget::parentWidget(), and widget.

Referenced by QWindowsVistaStyle::drawPrimitive().

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isLineEditBaseColorSet()

bool QWindowsVistaStylePrivate::isLineEditBaseColorSet ( const QStyleOption *  option, const QWidget *  widget  )

static

Definition at line 397 of file qwindowsvistastyle.cpp.

References QPalette::Base, QWidget::parentWidget(), and widget.

Referenced by QWindowsVistaStyle::drawPrimitive(), and supportsStateTransition().

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isTransparent()

bool QWindowsVistaStylePrivate::isTransparent

(

QWindowsThemeData &

themeData

)

Returns true if the part contains any transparency at all. This does not indicate what kind of transparency we're dealing with. It can be

• Alpha transparency
• Masked transparency

Definition at line 504 of file qwindowsvistastyle.cpp.

References QWindowsThemeData::handle(), QWindowsThemeData::partId, and QWindowsThemeData::stateId.

Referenced by drawBackgroundThruNativeBuffer().

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openThemeForPrimaryScreenDpi()

HTHEME QWindowsVistaStylePrivate::openThemeForPrimaryScreenDpi ( HWND  hwnd, const wchar_t *  name  )

static

Definition at line 226 of file qwindowsvistastyle.cpp.

References QGuiApplication::primaryScreen, and qRound().

Referenced by createTheme().

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pixelMetricFromSystemDp()

int QWindowsVistaStylePrivate::pixelMetricFromSystemDp ( QStyle::PixelMetric  pm, const QStyleOption *  option = nullptr, const QWidget *  widget = nullptr  )

static

Definition at line 245 of file qwindowsvistastyle.cpp.

References ButtonTheme, QSizeF::height(), Qt::Horizontal, QStyle::PM_DockWidgetFrameWidth, QStyle::PM_ExclusiveIndicatorHeight, QStyle::PM_ExclusiveIndicatorWidth, QStyle::PM_IndicatorHeight, QStyle::PM_IndicatorWidth, QStyle::PM_MdiSubWindowFrameWidth, QStyle::PM_ProgressBarChunkWidth, QStyle::PM_SliderThickness, QStyle::PM_TitleBarHeight, progressBarOrientation(), ProgressTheme, QWindowsThemeData::themeSize(), Qt::Tool, TrackBarTheme, widget, QSizeF::width(), WindowTheme, and QWidget::windowType().

Referenced by QWindowsVistaStyle::pixelMetric().

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region()

QRegion QWindowsVistaStylePrivate::region

(

QWindowsThemeData &

themeData

)

Returns a QRegion of the region of the part

Definition at line 514 of file qwindowsvistastyle.cpp.

References bufferHDC(), ERROR, QWindowsThemeData::handle(), i, QWindowsThemeData::partId, rd, QWindowsThemeData::rect, rect, region(), QRect::size(), QWindowsThemeData::stateId, QRect::topLeft(), QWindowsThemeData::toRECT(), and QWindowsThemeData::widget.

Referenced by drawBackgroundThruNativeBuffer(), and region().

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swapAlphaChannel()

bool QWindowsVistaStylePrivate::swapAlphaChannel	(	const QRect &	rect,
		bool	allPixels = false
	)

Swaps the alpha values on certain pixels: 0xFF?????? -> 0x00?????? 0x00?????? -> 0xFF?????? Used to determine the mask of a non-alpha transparent pixmap in the native doublebuffer, and swap the alphas so we may paint the image as a Premultiplied QImage with drawImage(), and obtain the mask transparency.

Definition at line 625 of file qwindowsvistastyle.cpp.

References rect.

Referenced by drawBackgroundThruNativeBuffer().

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themeName()

QString QWindowsVistaStylePrivate::themeName ( int  theme )

static

Definition at line 377 of file qwindowsvistastyle.cpp.

References QString::fromWCharArray(), NThemes, and themeNames.

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transitionsEnabled()

bool QWindowsVistaStylePrivate::transitionsEnabled

(

)

const

Definition at line 215 of file qwindowsvistastyle.cpp.

useVista()

bool QWindowsVistaStylePrivate::useVista ( bool  update = false )

static

Definition at line 169 of file qwindowsvistastyle.cpp.

References QCoreApplication::instance().

Referenced by QWindowsVistaStyle::drawComplexControl(), QWindowsVistaStyle::drawControl(), QWindowsVistaStyle::drawPrimitive(), QWindowsThemeData::handle(), init(), QWindowsVistaAnimation::isUpdateNeeded(), QWindowsThemeData::isValid(), QWindowsVistaStyle::pixelMetric(), QWindowsVistaStyle::polish(), QWindowsVistaStyle::sizeFromContents(), QWindowsVistaStyle::standardIcon(), QWindowsVistaStyle::standardPixmap(), QWindowsVistaStyle::subControlRect(), QWindowsVistaStyle::subElementRect(), and QWindowsVistaStyle::unpolish().

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winId()

HWND QWindowsVistaStylePrivate::winId ( const QWidget *  widget )

static

This function will always return a valid window handle, and might create a limbo widget to do so. We often need a window handle to for example open theme data, so this function ensures that we get one.

Definition at line 418 of file qwindowsvistastyle.cpp.

References QGuiApplication::allWindows(), Qt::Desktop, widget, and window().

Referenced by QWindowsThemeData::handle(), QWindowsVistaStyle::polish(), and QWindowsVistaStyle::subElementRect().

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Member Data Documentation

dockClose

QIcon QWindowsVistaStylePrivate::dockClose

Definition at line 152 of file qwindowsvistastyle_p_p.h.

dockFloat

QIcon QWindowsVistaStylePrivate::dockFloat

Definition at line 152 of file qwindowsvistastyle_p_p.h.

groupBoxTextColor

QRgb QWindowsVistaStylePrivate::groupBoxTextColor = 0

Definition at line 148 of file qwindowsvistastyle_p_p.h.

groupBoxTextColorDisabled

QRgb QWindowsVistaStylePrivate::groupBoxTextColorDisabled = 0

Definition at line 149 of file qwindowsvistastyle_p_p.h.

hasInitColors

bool QWindowsVistaStylePrivate::hasInitColors = false

Definition at line 151 of file qwindowsvistastyle_p_p.h.

sliderTickColor

QRgb QWindowsVistaStylePrivate::sliderTickColor = 0

Definition at line 150 of file qwindowsvistastyle_p_p.h.

---

The documentation for this class was generated from the following files:

• qtbase/src/plugins/styles/windowsvista/qwindowsvistastyle_p_p.h
• qtbase/src/plugins/styles/windowsvista/qwindowsvistastyle.cpp