qstyleoption.cpp

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**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include "private/qstylehelper_p.h"
#include "qstyleoption.h"
#include "qapplication.h"
#include <qdebug.h>
#include <QtCore/qmath.h>
 
QT_BEGIN_NAMESPACE
 
QStyleOption::QStyleOption(int version, int type)
    : version(version), type(type), state(QStyle::State_None),
      direction(QGuiApplication::layoutDirection()), fontMetrics(QFont()), styleObject(nullptr)
{
}
 
 
QStyleOption::~QStyleOption()
{
}
 
void QStyleOption::initFrom(const QWidget *widget)
{
    QWidget *window = widget->window();
    state = QStyle::State_None;
    if (widget->isEnabled())
        state |= QStyle::State_Enabled;
    if (widget->hasFocus())
        state |= QStyle::State_HasFocus;
    if (window->testAttribute(Qt::WA_KeyboardFocusChange))
        state |= QStyle::State_KeyboardFocusChange;
    if (widget->underMouse())
        state |= QStyle::State_MouseOver;
    if (window->isActiveWindow())
        state |= QStyle::State_Active;
    if (widget->isWindow())
        state |= QStyle::State_Window;
    switch (QStyleHelper::widgetSizePolicy(widget)) {
    case QStyleHelper::SizeSmall:
        state |= QStyle::State_Small;
        break;
    case QStyleHelper::SizeMini:
        state |= QStyle::State_Mini;
        break;
    default:
        ;
    }
#ifdef QT_KEYPAD_NAVIGATION
    if (widget->hasEditFocus())
        state |= QStyle::State_HasEditFocus;
#endif
 
    direction = widget->layoutDirection();
    rect = widget->rect();
    palette = widget->palette();
    fontMetrics = widget->fontMetrics();
    styleObject = const_cast<QWidget*>(widget);
}
 
QStyleOption::QStyleOption(const QStyleOption &other)
    : version(Version), type(Type), state(other.state),
      direction(other.direction), rect(other.rect), fontMetrics(other.fontMetrics),
      palette(other.palette), styleObject(other.styleObject)
{
}
 
QStyleOption &QStyleOption::operator=(const QStyleOption &other)
{
    state = other.state;
    direction = other.direction;
    rect = other.rect;
    fontMetrics = other.fontMetrics;
    palette = other.palette;
    styleObject = other.styleObject;
    return *this;
}
 
QStyleOptionFocusRect::QStyleOptionFocusRect()
    : QStyleOptionFocusRect(Version)
{
}
 
QStyleOptionFocusRect::QStyleOptionFocusRect(int version)
    : QStyleOption(version, SO_FocusRect)
{
    state |= QStyle::State_KeyboardFocusChange;  // assume we had one, will be corrected in initFrom()
}
 
QStyleOptionFrame::QStyleOptionFrame()
    : QStyleOptionFrame(Version)
{
}
 
QStyleOptionFrame::QStyleOptionFrame(int version)
    : QStyleOption(version, SO_Frame), lineWidth(0), midLineWidth(0),
      features(None), frameShape(QFrame::NoFrame)
{
}
 
QStyleOptionGroupBox::QStyleOptionGroupBox()
    : QStyleOptionGroupBox(Version)
{
}
 
QStyleOptionGroupBox::QStyleOptionGroupBox(int version)
    : QStyleOptionComplex(version, Type), features(QStyleOptionFrame::None),
      textAlignment(Qt::AlignLeft), lineWidth(0), midLineWidth(0)
{
}
 
QStyleOptionHeader::QStyleOptionHeader()
    : QStyleOptionHeader(QStyleOptionHeader::Version)
{
}
 
QStyleOptionHeader::QStyleOptionHeader(int version)
    : QStyleOption(version, SO_Header),
      section(0), textAlignment(Qt::AlignLeft), iconAlignment(Qt::AlignLeft),
      position(QStyleOptionHeader::Beginning),
      selectedPosition(QStyleOptionHeader::NotAdjacent), sortIndicator(None),
      orientation(Qt::Horizontal)
{
}
 
QStyleOptionHeaderV2::QStyleOptionHeaderV2()
    : QStyleOptionHeaderV2(QStyleOptionHeaderV2::Version)
{
}
 
QStyleOptionHeaderV2::QStyleOptionHeaderV2(int version)
: QStyleOptionHeader(version), textElideMode(Qt::ElideNone), isSectionDragTarget(false), unused(0)
{}
 
QStyleOptionButton::QStyleOptionButton()
    : QStyleOptionButton(QStyleOptionButton::Version)
{
}
 
QStyleOptionButton::QStyleOptionButton(int version)
    : QStyleOption(version, SO_Button), features(None)
{
}
 
#if QT_CONFIG(toolbar)
QStyleOptionToolBar::QStyleOptionToolBar()
    : QStyleOptionToolBar(Version)
{
}
 
QStyleOptionToolBar::QStyleOptionToolBar(int version)
: QStyleOption(version, SO_ToolBar), positionOfLine(OnlyOne), positionWithinLine(OnlyOne),
  toolBarArea(Qt::TopToolBarArea), features(None), lineWidth(0), midLineWidth(0)
{
 
}
 
#endif
 
#if QT_CONFIG(tabbar)
QStyleOptionTab::QStyleOptionTab()
    : QStyleOptionTab(QStyleOptionTab::Version)
{
}
 
QStyleOptionTab::QStyleOptionTab(int version)
    : QStyleOption(version, SO_Tab),
      shape(QTabBar::RoundedNorth),
      row(0),
      position(Beginning),
      selectedPosition(NotAdjacent), cornerWidgets(QStyleOptionTab::NoCornerWidgets),
      documentMode(false),
      features(QStyleOptionTab::None)
{
}
 
#endif // QT_CONFIG(tabbar)
 
QStyleOptionProgressBar::QStyleOptionProgressBar()
    : QStyleOptionProgressBar(QStyleOptionProgressBar::Version)
{
}
 
QStyleOptionProgressBar::QStyleOptionProgressBar(int version)
    : QStyleOption(version, SO_ProgressBar),
      minimum(0), maximum(0), progress(0), textAlignment(Qt::AlignLeft), textVisible(false),
      invertedAppearance(false), bottomToTop(false)
{
    state |= QStyle::State_Horizontal;
}
 
QStyleOptionMenuItem::QStyleOptionMenuItem()
    : QStyleOptionMenuItem(QStyleOptionMenuItem::Version)
{
}
 
QStyleOptionMenuItem::QStyleOptionMenuItem(int version)
    : QStyleOption(version, SO_MenuItem), menuItemType(Normal),
      checkType(NotCheckable), checked(false), menuHasCheckableItems(true), maxIconWidth(0),
      reservedShortcutWidth(0)
{
}
 
QStyleOptionComplex::QStyleOptionComplex(int version, int type)
    : QStyleOption(version, type), subControls(QStyle::SC_All), activeSubControls(QStyle::SC_None)
{
}
 
#if QT_CONFIG(slider)
QStyleOptionSlider::QStyleOptionSlider()
    : QStyleOptionSlider(Version)
{
}
 
QStyleOptionSlider::QStyleOptionSlider(int version)
    : QStyleOptionComplex(version, SO_Slider), orientation(Qt::Horizontal), minimum(0), maximum(0),
      tickPosition(QSlider::NoTicks), tickInterval(0), upsideDown(false),
      sliderPosition(0), sliderValue(0), singleStep(0), pageStep(0), notchTarget(0.0),
      dialWrapping(false), keyboardModifiers{}
{
}
 
#endif // QT_CONFIG(slider)
 
#if QT_CONFIG(spinbox)
QStyleOptionSpinBox::QStyleOptionSpinBox()
    : QStyleOptionSpinBox(Version)
{
}
 
QStyleOptionSpinBox::QStyleOptionSpinBox(int version)
    : QStyleOptionComplex(version, SO_SpinBox), buttonSymbols(QAbstractSpinBox::UpDownArrows),
      stepEnabled(QAbstractSpinBox::StepNone), frame(false)
{
}
 
#endif // QT_CONFIG(spinbox)
 
QStyleOptionDockWidget::QStyleOptionDockWidget()
    : QStyleOptionDockWidget(Version)
{
}
 
QStyleOptionDockWidget::QStyleOptionDockWidget(int version)
    : QStyleOption(version, SO_DockWidget), closable(false),
      movable(false), floatable(false), verticalTitleBar(false)
{
}
 
QStyleOptionToolButton::QStyleOptionToolButton()
    : QStyleOptionToolButton(Version)
{
}
 
QStyleOptionToolButton::QStyleOptionToolButton(int version)
    : QStyleOptionComplex(version, SO_ToolButton), features(None), arrowType(Qt::DownArrow)
    , toolButtonStyle(Qt::ToolButtonIconOnly)
 
{
}
 
QStyleOptionComboBox::QStyleOptionComboBox()
    : QStyleOptionComboBox(Version)
{
}
 
QStyleOptionComboBox::QStyleOptionComboBox(int version)
    : QStyleOptionComplex(version, SO_ComboBox), editable(false), frame(true)
{
}
 
QStyleOptionToolBox::QStyleOptionToolBox()
    : QStyleOptionToolBox(Version)
{
}
 
QStyleOptionToolBox::QStyleOptionToolBox(int version)
    : QStyleOption(version, SO_ToolBox), position(Beginning), selectedPosition(NotAdjacent)
{
}
 
#if QT_CONFIG(rubberband)
QStyleOptionRubberBand::QStyleOptionRubberBand()
    : QStyleOptionRubberBand(Version)
{
}
 
QStyleOptionRubberBand::QStyleOptionRubberBand(int version)
    : QStyleOption(version, SO_RubberBand), shape(QRubberBand::Line), opaque(false)
{
}
 
#endif // QT_CONFIG(rubberband)
 
QStyleOptionTitleBar::QStyleOptionTitleBar()
    : QStyleOptionTitleBar(Version)
{
}
 
QStyleOptionTitleBar::QStyleOptionTitleBar(int version)
    : QStyleOptionComplex(version, SO_TitleBar), titleBarState(0)
{
}
 
 
#if QT_CONFIG(itemviews)
QStyleOptionViewItem::QStyleOptionViewItem()
    : QStyleOptionViewItem(Version)
{
}
 
QStyleOptionViewItem::QStyleOptionViewItem(int version)
    : QStyleOption(version, SO_ViewItem),
      displayAlignment(Qt::AlignLeft), decorationAlignment(Qt::AlignLeft),
      textElideMode(Qt::ElideMiddle), decorationPosition(Left),
      showDecorationSelected(false), features(None), widget(nullptr),
      checkState(Qt::Unchecked), viewItemPosition(QStyleOptionViewItem::Invalid)
{
}
 
#endif // QT_CONFIG(itemviews)
#if QT_CONFIG(tabwidget)
QStyleOptionTabWidgetFrame::QStyleOptionTabWidgetFrame()
    : QStyleOptionTabWidgetFrame(Version)
{
}
 
QStyleOptionTabWidgetFrame::QStyleOptionTabWidgetFrame(int version)
    : QStyleOption(version, SO_TabWidgetFrame), lineWidth(0), midLineWidth(0),
      shape(QTabBar::RoundedNorth)
{
}
 
#endif // QT_CONFIG(tabwidget)
 
#if QT_CONFIG(tabbar)
 
QStyleOptionTabBarBase::QStyleOptionTabBarBase()
    : QStyleOptionTabBarBase(Version)
{
}
 
QStyleOptionTabBarBase::QStyleOptionTabBarBase(int version)
    : QStyleOption(version, SO_TabBarBase), shape(QTabBar::RoundedNorth),
      documentMode(false)
{
}
 
#endif // QT_CONFIG(tabbar)
 
#if QT_CONFIG(sizegrip)
QStyleOptionSizeGrip::QStyleOptionSizeGrip()
    : QStyleOptionSizeGrip(Version)
{
}
 
QStyleOptionSizeGrip::QStyleOptionSizeGrip(int version)
    : QStyleOptionComplex(version, Type), corner(Qt::BottomRightCorner)
{
}
 
#endif // QT_CONFIG(sizegrip)
 
QStyleOptionGraphicsItem::QStyleOptionGraphicsItem()
    : QStyleOptionGraphicsItem(Version)
{
}
 
QStyleOptionGraphicsItem::QStyleOptionGraphicsItem(int version)
    : QStyleOption(version, Type)
{
}
 
qreal QStyleOptionGraphicsItem::levelOfDetailFromTransform(const QTransform &worldTransform)
{
    if (worldTransform.type() <= QTransform::TxTranslate)
        return 1; // Translation only? The LOD is 1.
 
    // Two unit vectors.
    QLineF v1(0, 0, 1, 0);
    QLineF v2(0, 0, 0, 1);
    // LOD is the transformed area of a 1x1 rectangle.
    return qSqrt(worldTransform.map(v1).length() * worldTransform.map(v2).length());
}
 
QStyleHintReturn::QStyleHintReturn(int version, int type)
    : version(version), type(type)
{
}
 
QStyleHintReturn::~QStyleHintReturn()
{
 
}
 
QStyleHintReturnMask::QStyleHintReturnMask() : QStyleHintReturn(Version, Type)
{
}
 
QStyleHintReturnMask::~QStyleHintReturnMask()
{
}
 
QStyleHintReturnVariant::QStyleHintReturnVariant() : QStyleHintReturn(Version, Type)
{
}
 
QStyleHintReturnVariant::~QStyleHintReturnVariant()
{
}
 
#if !defined(QT_NO_DEBUG_STREAM)
QDebug operator<<(QDebug debug, const QStyleOption::OptionType &optionType)
{
#if !defined(QT_NO_DEBUG)
    switch (optionType) {
    case QStyleOption::SO_Default:
        debug << "SO_Default"; break;
    case QStyleOption::SO_FocusRect:
        debug << "SO_FocusRect"; break;
    case QStyleOption::SO_Button:
        debug << "SO_Button"; break;
    case QStyleOption::SO_Tab:
        debug << "SO_Tab"; break;
    case QStyleOption::SO_MenuItem:
        debug << "SO_MenuItem"; break;
    case QStyleOption::SO_Frame:
        debug << "SO_Frame"; break;
    case QStyleOption::SO_ProgressBar:
        debug << "SO_ProgressBar"; break;
    case QStyleOption::SO_ToolBox:
        debug << "SO_ToolBox"; break;
    case QStyleOption::SO_Header:
        debug << "SO_Header"; break;
    case QStyleOption::SO_DockWidget:
        debug << "SO_DockWidget"; break;
    case QStyleOption::SO_ViewItem:
        debug << "SO_ViewItem"; break;
    case QStyleOption::SO_TabWidgetFrame:
        debug << "SO_TabWidgetFrame"; break;
    case QStyleOption::SO_TabBarBase:
        debug << "SO_TabBarBase"; break;
    case QStyleOption::SO_RubberBand:
        debug << "SO_RubberBand"; break;
    case QStyleOption::SO_Complex:
        debug << "SO_Complex"; break;
    case QStyleOption::SO_Slider:
        debug << "SO_Slider"; break;
    case QStyleOption::SO_SpinBox:
        debug << "SO_SpinBox"; break;
    case QStyleOption::SO_ToolButton:
        debug << "SO_ToolButton"; break;
    case QStyleOption::SO_ComboBox:
        debug << "SO_ComboBox"; break;
    case QStyleOption::SO_TitleBar:
        debug << "SO_TitleBar"; break;
    case QStyleOption::SO_CustomBase:
        debug << "SO_CustomBase"; break;
    case QStyleOption::SO_GroupBox:
        debug << "SO_GroupBox"; break;
    case QStyleOption::SO_ToolBar:
        debug << "SO_ToolBar"; break;
    case QStyleOption::SO_ComplexCustomBase:
        debug << "SO_ComplexCustomBase"; break;
    case QStyleOption::SO_SizeGrip:
        debug << "SO_SizeGrip"; break;
    case QStyleOption::SO_GraphicsItem:
        debug << "SO_GraphicsItem"; break;
    }
#else
    Q_UNUSED(optionType);
#endif
    return debug;
}
 
QDebug operator<<(QDebug debug, const QStyleOption &option)
{
#if !defined(QT_NO_DEBUG)
    debug << "QStyleOption(";
    debug << QStyleOption::OptionType(option.type);
    debug << ',' << (option.direction == Qt::RightToLeft ? "RightToLeft" : "LeftToRight");
    debug << ',' << option.state;
    debug << ',' << option.rect;
    debug << ',' << option.styleObject;
    debug << ')';
#else
    Q_UNUSED(option);
#endif
    return debug;
}
#endif
 
QT_END_NAMESPACE