qmacstyle_mac.mm File Reference

(b1a7a9d4f437c905df8368742b4189f1e8cea311)

#include <AppKit/AppKit.h>
#include "qmacstyle_mac_p.h"
#include "qmacstyle_mac_p_p.h"
#include <QtCore/qoperatingsystemversion.h>
#include <QtCore/qvariant.h>
#include <QtCore/qvarlengtharray.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/private/qcore_mac_p.h>
#include <QtGui/qpainterpath.h>
#include <QtGui/qstylehints.h>
#include <QtGui/private/qcoregraphics_p.h>
#include <QtGui/qpa/qplatformfontdatabase.h>
#include <QtGui/qpa/qplatformtheme.h>
#include <QtWidgets/private/qstyleanimation_p.h>
#include <QtGui/private/qmacstyle_p.h>
#include <iterator>
#include <cmath>

Include dependency graph for qmacstyle_mac.mm:

Go to the source code of this file.

Classes
category	QT_MANGLE_NAMESPACE(QIndeterminateProgressIndicator)
category	QT_MANGLE_NAMESPACE(QVerticalSplitView)
category	QT_MANGLE_NAMESPACE(QDarkNSBox)

Macros
#define	QMAC_QAQUASTYLE_SIZE_CONSTRAIN

Enumerations
enum	QAquaMetric {   CheckBoxHeight = 0 , CheckBoxWidth , EditTextFrameOutset , FocusRectOutset ,   HSliderHeight , HSliderTickHeight , LargeProgressBarThickness , ListHeaderHeight ,   MenuSeparatorHeight , MiniCheckBoxHeight , MiniCheckBoxWidth , MiniHSliderHeight ,   MiniHSliderTickHeight , MiniPopupButtonHeight , MiniPushButtonHeight , MiniRadioButtonHeight ,   MiniRadioButtonWidth , MiniVSliderTickWidth , MiniVSliderWidth , NormalProgressBarThickness ,   PopupButtonHeight , ProgressBarShadowOutset , PushButtonHeight , RadioButtonHeight ,   RadioButtonWidth , SeparatorSize , SmallCheckBoxHeight , SmallCheckBoxWidth ,   SmallHSliderHeight , SmallHSliderTickHeight , SmallPopupButtonHeight , SmallProgressBarShadowOutset ,   SmallPushButtonHeight , SmallRadioButtonHeight , SmallRadioButtonWidth , SmallVSliderTickWidth ,   SmallVSliderWidth , VSliderTickWidth , VSliderWidth , CheckBoxHeight = 0 ,   CheckBoxWidth , EditTextFrameOutset , FocusRectOutset , HSliderHeight ,   HSliderTickHeight , LargeProgressBarThickness , ListHeaderHeight , MenuSeparatorHeight ,   MiniCheckBoxHeight , MiniCheckBoxWidth , MiniHSliderHeight , MiniHSliderTickHeight ,   MiniPopupButtonHeight , MiniPushButtonHeight , MiniRadioButtonHeight , MiniRadioButtonWidth ,   MiniVSliderTickWidth , MiniVSliderWidth , NormalProgressBarThickness , PopupButtonHeight ,   ProgressBarShadowOutset , PushButtonHeight , RadioButtonHeight , RadioButtonWidth ,   SeparatorSize , SmallCheckBoxHeight , SmallCheckBoxWidth , SmallHSliderHeight ,   SmallHSliderTickHeight , SmallPopupButtonHeight , SmallProgressBarShadowOutset , SmallPushButtonHeight ,   SmallRadioButtonHeight , SmallRadioButtonWidth , SmallVSliderTickWidth , SmallVSliderWidth ,   VSliderTickWidth , VSliderWidth }
enum	QAquaMetric {   CheckBoxHeight = 0 , CheckBoxWidth , EditTextFrameOutset , FocusRectOutset ,   HSliderHeight , HSliderTickHeight , LargeProgressBarThickness , ListHeaderHeight ,   MenuSeparatorHeight , MiniCheckBoxHeight , MiniCheckBoxWidth , MiniHSliderHeight ,   MiniHSliderTickHeight , MiniPopupButtonHeight , MiniPushButtonHeight , MiniRadioButtonHeight ,   MiniRadioButtonWidth , MiniVSliderTickWidth , MiniVSliderWidth , NormalProgressBarThickness ,   PopupButtonHeight , ProgressBarShadowOutset , PushButtonHeight , RadioButtonHeight ,   RadioButtonWidth , SeparatorSize , SmallCheckBoxHeight , SmallCheckBoxWidth ,   SmallHSliderHeight , SmallHSliderTickHeight , SmallPopupButtonHeight , SmallProgressBarShadowOutset ,   SmallPushButtonHeight , SmallRadioButtonHeight , SmallRadioButtonWidth , SmallVSliderTickWidth ,   SmallVSliderWidth , VSliderTickWidth , VSliderWidth , CheckBoxHeight = 0 ,   CheckBoxWidth , EditTextFrameOutset , FocusRectOutset , HSliderHeight ,   HSliderTickHeight , LargeProgressBarThickness , ListHeaderHeight , MenuSeparatorHeight ,   MiniCheckBoxHeight , MiniCheckBoxWidth , MiniHSliderHeight , MiniHSliderTickHeight ,   MiniPopupButtonHeight , MiniPushButtonHeight , MiniRadioButtonHeight , MiniRadioButtonWidth ,   MiniVSliderTickWidth , MiniVSliderWidth , NormalProgressBarThickness , PopupButtonHeight ,   ProgressBarShadowOutset , PushButtonHeight , RadioButtonHeight , RadioButtonWidth ,   SeparatorSize , SmallCheckBoxHeight , SmallCheckBoxWidth , SmallHSliderHeight ,   SmallHSliderTickHeight , SmallPopupButtonHeight , SmallProgressBarShadowOutset , SmallPushButtonHeight ,   SmallRadioButtonHeight , SmallRadioButtonWidth , SmallVSliderTickWidth , SmallVSliderWidth ,   VSliderTickWidth , VSliderWidth }

Functions
QT_USE_NAMESPACE	Q_STATIC_LOGGING_CATEGORY (lcMacStyle, "qt.widgets.styles.macos")
	QT_NAMESPACE_ALIAS_OBJC_CLASS (QIndeterminateProgressIndicator)
	QT_NAMESPACE_ALIAS_OBJC_CLASS (QVerticalSplitView)
	QT_NAMESPACE_ALIAS_OBJC_CLASS (QDarkNSBox)
static bool	isDarkMode ()
void	adjustPushButtonShadowMargins (QRectF &rect, QStyleHelper::WidgetSizePolicy size)
static bool	setupScroller (NSScroller *scroller, const QStyleOptionSlider *sb)
static bool	setupSlider (NSSlider *slider, const QStyleOptionSlider *sl)
static bool	isInMacUnifiedToolbarArea (QWindow *window, int windowY)
void	drawTickMarks (CGContextRef ctx, NSSlider *nsSlider, const QStyleOptionSlider *sliderOpt)
void	drawSliderKnob (CGContextRef ctx, NSSlider *slider)
static QStyleHelper::WidgetSizePolicy	getControlSize (const QStyleOption *option, const QWidget *widget)
static QString	qt_mac_removeMnemonics (const QString &original)
static bool	qt_macWindowMainWindow (const QWidget *window)
static NSUserInterfaceLayoutDirection	qt_macLayoutDirectionFromQt (Qt::LayoutDirection direction)
static int	qt_mac_aqua_get_metric (QAquaMetric m)
static QSize	qt_aqua_get_known_size (QStyle::ContentsType ct, const QStyleOption *opt, const QWidget *widg, QSize szHint, QStyleHelper::WidgetSizePolicy sz)
static CGRect	qt_alignmentRectForFrame (CGRect rect, QStyleHelper::WidgetSizePolicy size, QMacStylePrivate::CocoaControlType ct)
static QStyleHelper::WidgetSizePolicy	qt_aqua_guess_size (const QWidget *widg, QSize large, QSize small, QSize mini)
size_t	qHash (const QMacStylePrivate::CocoaControl &cw, size_t seed=0)
QMacStylePrivate::CocoaControlType	cocoaControlType (const QStyleOption *opt, const QWidget *w)
static QPixmap	darkenPixmap (const QPixmap &pixmap)
static void	setLayoutItemMargins (int left, int top, int right, int bottom, QRect *rect, Qt::LayoutDirection dir)

Variables
const int	pushButtonBevelRectOffsets [3]
static const QColor	titlebarSeparatorLineActive (111, 111, 111)
static const QColor	titlebarSeparatorLineInactive (131, 131, 131)
static const QColor	darkModeSeparatorLine (88, 88, 88)
static const QColor	lightMainWindowGradientBegin (240, 240, 240)
static const QColor	lightMainWindowGradientEnd (200, 200, 200)
static const QColor	darkMainWindowGradientBegin (47, 47, 47)
static const QColor	darkMainWindowGradientEnd (47, 47, 47)
static const int	DisclosureOffset = 4
static const qreal	titleBarIconTitleSpacing = 5
static const qreal	titleBarTitleRightMargin = 12
static const qreal	titleBarButtonSpacing = 8
static const int	headerSectionArrowHeight = 6
static const int	headerSectionSeparatorInset = 2
static const QMarginsF	comboBoxFocusRingMargins [3]
static const QMarginsF	pullDownButtonShadowMargins [3]
static const QMarginsF	pushButtonShadowMargins [3]
static const qreal	comboBoxDefaultHeight [3]
static const qreal	pushButtonDefaultHeight [3]
static const qreal	popupButtonDefaultHeight [3]
static const int	toolButtonArrowSize = 7
static const int	toolButtonArrowMargin = 2
static const qreal	focusRingWidth = 3.5
const int	macItemFrame = 2
const int	macItemHMargin = 3
const int	macRightBorder = 12
static const int	qt_mac_aqua_metrics []
return	ret

Macro Definition Documentation

QMAC_QAQUASTYLE_SIZE_CONSTRAIN

#define QMAC_QAQUASTYLE_SIZE_CONSTRAIN

Definition at line 15 of file qmacstyle_mac.mm.

Enumeration Type Documentation

QAquaMetric [1/2]

enum QAquaMetric

Enumerator
CheckBoxHeight
CheckBoxWidth
EditTextFrameOutset
FocusRectOutset
HSliderHeight
HSliderTickHeight
LargeProgressBarThickness
ListHeaderHeight
MenuSeparatorHeight
MiniCheckBoxHeight
MiniCheckBoxWidth
MiniHSliderHeight
MiniHSliderTickHeight
MiniPopupButtonHeight
MiniPushButtonHeight
MiniRadioButtonHeight
MiniRadioButtonWidth
MiniVSliderTickWidth
MiniVSliderWidth
NormalProgressBarThickness
PopupButtonHeight
ProgressBarShadowOutset
PushButtonHeight
RadioButtonHeight
RadioButtonWidth
SeparatorSize
SmallCheckBoxHeight
SmallCheckBoxWidth
SmallHSliderHeight
SmallHSliderTickHeight
SmallPopupButtonHeight
SmallProgressBarShadowOutset
SmallPushButtonHeight
SmallRadioButtonHeight
SmallRadioButtonWidth
SmallVSliderTickWidth
SmallVSliderWidth
VSliderTickWidth
VSliderWidth
CheckBoxHeight
CheckBoxWidth
EditTextFrameOutset
FocusRectOutset
HSliderHeight
HSliderTickHeight
LargeProgressBarThickness
ListHeaderHeight
MenuSeparatorHeight
MiniCheckBoxHeight
MiniCheckBoxWidth
MiniHSliderHeight
MiniHSliderTickHeight
MiniPopupButtonHeight
MiniPushButtonHeight
MiniRadioButtonHeight
MiniRadioButtonWidth
MiniVSliderTickWidth
MiniVSliderWidth
NormalProgressBarThickness
PopupButtonHeight
ProgressBarShadowOutset
PushButtonHeight
RadioButtonHeight
RadioButtonWidth
SeparatorSize
SmallCheckBoxHeight
SmallCheckBoxWidth
SmallHSliderHeight
SmallHSliderTickHeight
SmallPopupButtonHeight
SmallProgressBarShadowOutset
SmallPushButtonHeight
SmallRadioButtonHeight
SmallRadioButtonWidth
SmallVSliderTickWidth
SmallVSliderWidth
VSliderTickWidth
VSliderWidth

Definition at line 795 of file qmacstyle_mac.mm.

QAquaMetric [2/2]

enum QAquaMetric

Enumerator
CheckBoxHeight
CheckBoxWidth
EditTextFrameOutset
FocusRectOutset
HSliderHeight
HSliderTickHeight
LargeProgressBarThickness
ListHeaderHeight
MenuSeparatorHeight
MiniCheckBoxHeight
MiniCheckBoxWidth
MiniHSliderHeight
MiniHSliderTickHeight
MiniPopupButtonHeight
MiniPushButtonHeight
MiniRadioButtonHeight
MiniRadioButtonWidth
MiniVSliderTickWidth
MiniVSliderWidth
NormalProgressBarThickness
PopupButtonHeight
ProgressBarShadowOutset
PushButtonHeight
RadioButtonHeight
RadioButtonWidth
SeparatorSize
SmallCheckBoxHeight
SmallCheckBoxWidth
SmallHSliderHeight
SmallHSliderTickHeight
SmallPopupButtonHeight
SmallProgressBarShadowOutset
SmallPushButtonHeight
SmallRadioButtonHeight
SmallRadioButtonWidth
SmallVSliderTickWidth
SmallVSliderWidth
VSliderTickWidth
VSliderWidth
CheckBoxHeight
CheckBoxWidth
EditTextFrameOutset
FocusRectOutset
HSliderHeight
HSliderTickHeight
LargeProgressBarThickness
ListHeaderHeight
MenuSeparatorHeight
MiniCheckBoxHeight
MiniCheckBoxWidth
MiniHSliderHeight
MiniHSliderTickHeight
MiniPopupButtonHeight
MiniPushButtonHeight
MiniRadioButtonHeight
MiniRadioButtonWidth
MiniVSliderTickWidth
MiniVSliderWidth
NormalProgressBarThickness
PopupButtonHeight
ProgressBarShadowOutset
PushButtonHeight
RadioButtonHeight
RadioButtonWidth
SeparatorSize
SmallCheckBoxHeight
SmallCheckBoxWidth
SmallHSliderHeight
SmallHSliderTickHeight
SmallPopupButtonHeight
SmallProgressBarShadowOutset
SmallPushButtonHeight
SmallRadioButtonHeight
SmallRadioButtonWidth
SmallVSliderTickWidth
SmallVSliderWidth
VSliderTickWidth
VSliderWidth

Definition at line 795 of file qmacstyle_mac.mm.

Function Documentation

adjustPushButtonShadowMargins()

void adjustPushButtonShadowMargins	(	QRectF &	rect,
		QStyleHelper::WidgetSizePolicy	size )

Definition at line 338 of file qmacstyle_mac.mm.

cocoaControlType()

QMacStylePrivate::CocoaControlType cocoaControlType	(	const QStyleOption *	opt,
		const QWidget *	w )

Definition at line 1819 of file qmacstyle_mac.mm.

darkenPixmap()

QPixmap darkenPixmap ( const QPixmap & pixmap )

static

Definition at line 3701 of file qmacstyle_mac.mm.

drawSliderKnob()

void drawSliderKnob	(	CGContextRef	ctx,
		NSSlider *	slider )

Definition at line 666 of file qmacstyle_mac.mm.

drawTickMarks()

void drawTickMarks	(	CGContextRef	ctx,
		NSSlider *	nsSlider,
		const QStyleOptionSlider *	sliderOpt )

Definition at line 595 of file qmacstyle_mac.mm.

getControlSize()

QStyleHelper::WidgetSizePolicy getControlSize ( const QStyleOption * option, const QWidget * widget )

static

Definition at line 709 of file qmacstyle_mac.mm.

isDarkMode()

bool isDarkMode ( )

inlinestatic

Definition at line 173 of file qmacstyle_mac.mm.

Referenced by QMacStylePrivate::cocoaControl(), QMacStyle::drawControl(), QMacStylePrivate::drawFocusRing(), and QMacStyle::drawPrimitive().

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isInMacUnifiedToolbarArea()

bool isInMacUnifiedToolbarArea ( QWindow * window, int windowY )

static

Definition at line 434 of file qmacstyle_mac.mm.

Q_STATIC_LOGGING_CATEGORY()

QT_USE_NAMESPACE Q_STATIC_LOGGING_CATEGORY	(	lcMacStyle	,
		"qt.widgets.styles.macos"	)

qHash()

size_t qHash	(	const QMacStylePrivate::CocoaControl &	cw,
		size_t	seed = 0 )

Definition at line 1671 of file qmacstyle_mac.mm.

qt_alignmentRectForFrame()

CGRect qt_alignmentRectForFrame ( CGRect rect, QStyleHelper::WidgetSizePolicy size, QMacStylePrivate::CocoaControlType ct )

static

Definition at line 1185 of file qmacstyle_mac.mm.

qt_aqua_get_known_size()

QSize qt_aqua_get_known_size ( QStyle::ContentsType ct, const QStyleOption * opt, const QWidget * widg, QSize szHint, QStyleHelper::WidgetSizePolicy sz )

static

Definition at line 890 of file qmacstyle_mac.mm.

References HSliderHeight, HSliderTickHeight, MiniHSliderHeight, MiniHSliderTickHeight, MiniPopupButtonHeight, MiniVSliderTickWidth, MiniVSliderWidth, PopupButtonHeight, qt_mac_aqua_get_metric(), SmallHSliderHeight, SmallHSliderTickHeight, SmallPopupButtonHeight, SmallVSliderTickWidth, SmallVSliderWidth, VSliderTickWidth, and VSliderWidth.

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qt_aqua_guess_size()

QStyleHelper::WidgetSizePolicy qt_aqua_guess_size ( const QWidget * widg, QSize large, QSize small, QSize mini )

static

Definition at line 1232 of file qmacstyle_mac.mm.

qt_mac_aqua_get_metric()

int qt_mac_aqua_get_metric ( QAquaMetric m )

inlinestatic

Definition at line 882 of file qmacstyle_mac.mm.

References MiniRadioButtonWidth, and qt_mac_aqua_metrics.

Referenced by QMacStyle::pixelMetric(), qt_aqua_get_known_size(), and QMacStyle::sizeFromContents().

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qt_mac_removeMnemonics()

QString qt_mac_removeMnemonics ( const QString & original )

static

Definition at line 726 of file qmacstyle_mac.mm.

qt_macLayoutDirectionFromQt()

NSUserInterfaceLayoutDirection qt_macLayoutDirectionFromQt ( Qt::LayoutDirection direction )

static

Definition at line 772 of file qmacstyle_mac.mm.

qt_macWindowMainWindow()

bool qt_macWindowMainWindow ( const QWidget * window )

static

Definition at line 760 of file qmacstyle_mac.mm.

QT_NAMESPACE_ALIAS_OBJC_CLASS() [1/3]

QT_NAMESPACE_ALIAS_OBJC_CLASS

(

QDarkNSBox

)

QT_NAMESPACE_ALIAS_OBJC_CLASS() [2/3]

QT_NAMESPACE_ALIAS_OBJC_CLASS

(

QIndeterminateProgressIndicator

)

QT_NAMESPACE_ALIAS_OBJC_CLASS() [3/3]

QT_NAMESPACE_ALIAS_OBJC_CLASS

(

QVerticalSplitView

)

setLayoutItemMargins()

void setLayoutItemMargins ( int left, int top, int right, int bottom, QRect * rect, Qt::LayoutDirection dir )

static

Definition at line 4937 of file qmacstyle_mac.mm.

setupScroller()

bool setupScroller ( NSScroller * scroller, const QStyleOptionSlider * sb )

static

Definition at line 370 of file qmacstyle_mac.mm.

setupSlider()

bool setupSlider ( NSSlider * slider, const QStyleOptionSlider * sl )

static

Definition at line 387 of file qmacstyle_mac.mm.

Variable Documentation

comboBoxDefaultHeight

const qreal comboBoxDefaultHeight

static

Initial value:

= {
    26, 22, 19
}

Definition at line 353 of file qmacstyle_mac.mm.

comboBoxFocusRingMargins

const QMarginsF comboBoxFocusRingMargins

static

Initial value:

= {
    { 0.5, 2, 3.5, 4 },
    { 0.5, 1, 2.5, 4 },
    { 0.5, 1.5, 2.5, 3.5 }
}

Definition at line 320 of file qmacstyle_mac.mm.

darkMainWindowGradientBegin

const QColor darkMainWindowGradientBegin ( 47 , 47 , 47  )

static

darkMainWindowGradientEnd

const QColor darkMainWindowGradientEnd ( 47 , 47 , 47  )

static

darkModeSeparatorLine

const QColor darkModeSeparatorLine ( 88 , 88 , 88  )

static

DisclosureOffset

const int DisclosureOffset = 4

static

Definition at line 243 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawPrimitive(), and QMacStyle::subElementRect().

focusRingWidth

const qreal focusRingWidth = 3.5

static

Definition at line 368 of file qmacstyle_mac.mm.

headerSectionArrowHeight

const int headerSectionArrowHeight = 6

static

Definition at line 316 of file qmacstyle_mac.mm.

Referenced by QMacStyle::subElementRect().

headerSectionSeparatorInset

const int headerSectionSeparatorInset = 2

static

Definition at line 317 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawControl().

lightMainWindowGradientBegin

const QColor lightMainWindowGradientBegin ( 240 , 240 , 240  )

static

lightMainWindowGradientEnd

const QColor lightMainWindowGradientEnd ( 200 , 200 , 200  )

static

macItemFrame

const int macItemFrame = 2

Definition at line 787 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawControl().

macItemHMargin

const int macItemHMargin = 3

Definition at line 788 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawControl().

macRightBorder

const int macRightBorder = 12

Definition at line 789 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawControl().

popupButtonDefaultHeight

const qreal popupButtonDefaultHeight

static

Initial value:

= {
    26, 22, 15
}

Definition at line 361 of file qmacstyle_mac.mm.

pullDownButtonShadowMargins

const QMarginsF pullDownButtonShadowMargins

static

Initial value:

= {
    { 0.5, -1, 0.5, 2 },
    { 0.5, -1.5, 0.5, 2.5 },
    { 0.5, 0, 0.5, 1 }
}

Definition at line 326 of file qmacstyle_mac.mm.

pushButtonBevelRectOffsets

const int pushButtonBevelRectOffsets

Initial value:

= {
    QMacStylePrivate::PushButtonLeftOffset, 5, 5
}

Definition at line 167 of file qmacstyle_mac.mm.

pushButtonDefaultHeight

const qreal pushButtonDefaultHeight

static

Initial value:

= {
    32, 28, 24
}

Definition at line 357 of file qmacstyle_mac.mm.

pushButtonShadowMargins

const QMarginsF pushButtonShadowMargins

static

Initial value:

= {
    { 1.5, -1.5, 1.5, 4.5 },
    { 1.5, -1, 1.5, 4 },
    { 1.5, 0.5, 1.5, 2.5 }
}

Definition at line 332 of file qmacstyle_mac.mm.

qt_mac_aqua_metrics

const int qt_mac_aqua_metrics

static

Definition at line 839 of file qmacstyle_mac.mm.

Referenced by qt_mac_aqua_get_metric().

ret

return ret

Definition at line 1182 of file qmacstyle_mac.mm.

titleBarButtonSpacing

const qreal titleBarButtonSpacing = 8

static

Definition at line 247 of file qmacstyle_mac.mm.

titleBarIconTitleSpacing

const qreal titleBarIconTitleSpacing = 5

static

Definition at line 245 of file qmacstyle_mac.mm.

titlebarSeparatorLineActive

const QColor titlebarSeparatorLineActive ( 111 , 111 , 111  )

static

titlebarSeparatorLineInactive

const QColor titlebarSeparatorLineInactive ( 131 , 131 , 131  )

static

titleBarTitleRightMargin

const qreal titleBarTitleRightMargin = 12

static

Definition at line 246 of file qmacstyle_mac.mm.

toolButtonArrowMargin

const int toolButtonArrowMargin = 2

static

Definition at line 366 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawComplexControl(), QMacStylePrivate::drawToolbarButtonArrow(), and QMacStyle::sizeFromContents().

toolButtonArrowSize

const int toolButtonArrowSize = 7

static

Definition at line 365 of file qmacstyle_mac.mm.

Referenced by QMacStyle::drawComplexControl(), QMacStylePrivate::drawToolbarButtonArrow(), and QMacStyle::pixelMetric().