breeze/kstyle/breezestyle.h

0001 /*
0002  * SPDX-FileCopyrightText: 2014 Hugo Pereira Da Costa <hugo.pereira@free.fr>
0003  *
0004  * SPDX-License-Identifier: GPL-2.0-or-later
0005  */
0006
0007 #pragma once
0008
0009 #include "breeze.h"
0010 #include "breezehelper.h"
0011 #include "breezemetrics.h"
0012 #include "config-breeze.h"
0013
0014 #if BREEZE_HAVE_KSTYLE
0015 #include <KStyle>
0016 #endif
0017
0018 #include <QAbstractItemView>
0019 #include <QAbstractScrollArea>
0020
0021 #include <QCommandLinkButton>
0022 #include <QCommonStyle>
0023 #include <QDockWidget>
0024 #include <QFocusFrame>
0025 #include <QHash>
0026 #include <QIcon>
0027 #include <QMdiSubWindow>
0028 #include <QStyleOption>
0029 #include <QWidget>
0030
0031 #include <functional>
0032
0033 class QDialogButtonBox;
0034
0035 namespace BreezePrivate
0036 {
0037 class TabBarData;
0038 }
0039
0040 namespace Breeze
0041 {
0042 class Animations;
0043 class FrameShadowFactory;
0044 class Helper;
0045 class MdiWindowShadowFactory;
0046 class Mnemonics;
0047 class ShadowHelper;
0048 class SplitterFactory;
0049 class WidgetExplorer;
0050 class WindowManager;
0051 class BlurHelper;
0052 class ToolsAreaManager;
0053
0054 //* convenience typedef for base class
0055 #if !BREEZE_HAVE_KSTYLE
0056 using ParentStyleClass = QCommonStyle;
0057 #else
0058 using ParentStyleClass = KStyle;
0059 #endif
0060
0061 //* base class for breeze style
0062 /** it is responsible to draw all the primitives to be displayed on screen, on request from Qt paint engine */
0063 class Style : public ParentStyleClass
0064 {
0065     Q_OBJECT
0066
0067     /* this tells kde applications that custom style elements are supported, using the kstyle mechanism */
0068     Q_CLASSINFO("X-KDE-CustomElements", "true")
0069
0070 public:
0071     //* constructor
0072     explicit Style();
0073
0074     //* destructor
0075     ~Style() override;
0076
0077     //* needed to avoid warnings at compilation time
0078     using ParentStyleClass::polish;
0079     using ParentStyleClass::unpolish;
0080
0081     //* widget polishing
0082     void polish(QWidget *) override;
0083
0084     //* widget unpolishing
0085     void unpolish(QWidget *) override;
0086
0087     //* application polishing
0088     void polish(QApplication *) override;
0089
0090     //* application unpolishing
0091     void unpolish(QApplication *) override;
0092
0093     //* polish scrollarea
0094     void polishScrollArea(QAbstractScrollArea *);
0095
0096     //* pixel metrics
0097     int pixelMetric(PixelMetric, const QStyleOption * = nullptr, const QWidget * = nullptr) const override;
0098
0099     //* style hints
0100     int styleHint(StyleHint, const QStyleOption * = nullptr, const QWidget * = nullptr, QStyleHintReturn * = nullptr) const override;
0101
0102     //* returns rect corresponding to one widget's subelement
0103     QRect subElementRect(SubElement, const QStyleOption *, const QWidget *) const override;
0104
0105     //* returns rect corresponding to one widget's subcontrol
0106     QRect subControlRect(ComplexControl, const QStyleOptionComplex *, SubControl, const QWidget *) const override;
0107
0108     //* returns size matching contents
0109     QSize sizeFromContents(ContentsType, const QStyleOption *, const QSize &, const QWidget *) const override;
0110
0111     //* returns which subcontrol given QPoint corresponds to
0112     SubControl hitTestComplexControl(ComplexControl, const QStyleOptionComplex *, const QPoint &, const QWidget *) const override;
0113
0114     //* primitives
0115     void drawPrimitive(PrimitiveElement, const QStyleOption *, QPainter *, const QWidget *) const override;
0116
0117     //* controls
0118     void drawControl(ControlElement, const QStyleOption *, QPainter *, const QWidget *) const override;
0119
0120     //* complex controls
0121     void drawComplexControl(ComplexControl, const QStyleOptionComplex *, QPainter *, const QWidget *) const override;
0122
0123     //* generic text rendering
0124     void drawItemText(QPainter *, const QRect &, int alignment, const QPalette &, bool enabled, const QString &, QPalette::ColorRole = QPalette::NoRole)
0125         const override;
0126
0127     bool event(QEvent *) override;
0128
0129     //*@name event filters
0130     //@{
0131
0132     bool eventFilter(QObject *, QEvent *) override;
0133     bool eventFilterScrollArea(QWidget *, QEvent *);
0134     bool eventFilterComboBoxContainer(QWidget *, QEvent *);
0135     bool eventFilterDockWidget(QDockWidget *, QEvent *);
0136     bool eventFilterMdiSubWindow(QMdiSubWindow *, QEvent *);
0137     bool eventFilterCommandLinkButton(QCommandLinkButton *, QEvent *);
0138     bool eventFilterDialogButtonBox(QDialogButtonBox *, QEvent *);
0139
0140     //* install event filter to object, in a unique way
0141     void addEventFilter(QObject *object)
0142     {
0143         object->removeEventFilter(this);
0144         object->installEventFilter(this);
0145     }
0146
0147     //@}
0148
0149 protected Q_SLOTS:
0150
0151     //* update configuration
0152     void configurationChanged();
0153
0154     //* global configuration changed
0155     void globalConfigurationChanged(int type, int arg);
0156     void loadGlobalAnimationSettings();
0157
0158     //* standard icons
0159     QIcon standardIconImplementation(StandardPixmap, const QStyleOption *, const QWidget *) const;
0160
0161 protected:
0162     //* standard icons
0163     QIcon standardIcon(StandardPixmap pixmap, const QStyleOption *option = nullptr, const QWidget *widget = nullptr) const override
0164     {
0165         return standardIconImplementation(pixmap, option, widget);
0166     }
0167
0168 private:
0169     //* load configuration
0170     void loadConfiguration();
0171
0172     bool isTabletMode() const;
0173
0174     //*@name subelementRect specialized functions
0175     //@{
0176
0177     QRect pushButtonContentsRect(const QStyleOption *, const QWidget *) const;
0178     QRect checkBoxContentsRect(const QStyleOption *, const QWidget *) const;
0179     QRect lineEditContentsRect(const QStyleOption *, const QWidget *) const;
0180     QRect progressBarGrooveRect(const QStyleOption *, const QWidget *) const;
0181     QRect progressBarContentsRect(const QStyleOption *, const QWidget *) const;
0182     QRect progressBarLabelRect(const QStyleOption *, const QWidget *) const;
0183     QRect frameContentsRect(const QStyleOption *, const QWidget *) const;
0184     QRect headerArrowRect(const QStyleOption *, const QWidget *) const;
0185     QRect headerLabelRect(const QStyleOption *, const QWidget *) const;
0186     QRect tabBarTabLeftButtonRect(const QStyleOption *, const QWidget *) const;
0187     QRect tabBarTabRightButtonRect(const QStyleOption *, const QWidget *) const;
0188     QRect tabWidgetTabBarRect(const QStyleOption *, const QWidget *) const;
0189     QRect tabWidgetTabContentsRect(const QStyleOption *, const QWidget *) const;
0190     QRect tabWidgetTabPaneRect(const QStyleOption *, const QWidget *) const;
0191     QRect tabWidgetCornerRect(SubElement, const QStyleOption *, const QWidget *widget) const;
0192     QRect toolBoxTabContentsRect(const QStyleOption *, const QWidget *) const;
0193     QRect genericLayoutItemRect(const QStyleOption *, const QWidget *) const;
0194
0195     //@}
0196
0197     //*@name subcontrol Rect specialized functions
0198     //@{
0199
0200     QRect groupBoxSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0201     QRect toolButtonSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0202     QRect comboBoxSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0203     QRect spinBoxSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0204     QRect scrollBarInternalSubControlRect(const QStyleOptionComplex *, SubControl) const;
0205     QRect scrollBarSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0206     QRect dialSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0207     QRect sliderSubControlRect(const QStyleOptionComplex *, SubControl, const QWidget *) const;
0208
0209     //@}
0210
0211     //*@name sizeFromContents
0212     //@{
0213     QSize defaultSizeFromContents(const QStyleOption *, const QSize &size, const QWidget *) const
0214     {
0215         return size;
0216     }
0217
0218     QSize checkBoxSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0219     QSize lineEditSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0220     QSize comboBoxSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0221     QSize spinBoxSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0222     QSize sliderSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0223     QSize pushButtonSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0224     QSize toolButtonSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0225     QSize menuBarItemSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0226     QSize menuItemSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0227     QSize progressBarSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0228     QSize tabWidgetSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0229     QSize tabBarTabSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0230     QSize headerSectionSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0231     QSize itemViewItemSizeFromContents(const QStyleOption *, const QSize &, const QWidget *) const;
0232
0233     //@}
0234
0235     //*@name primitives specialized functions
0236     //@{
0237
0238     bool emptyPrimitive(const QStyleOption *, QPainter *, const QWidget *) const
0239     {
0240         return true;
0241     }
0242
0243     bool drawFramePrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0244     bool drawFrameLineEditPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0245     bool drawFrameFocusRectPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0246     bool drawFrameMenuPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0247     bool drawFrameGroupBoxPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0248     bool drawFrameTabWidgetPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0249     bool drawFrameTabBarBasePrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0250     bool drawFrameWindowPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0251
0252     bool drawIndicatorArrowUpPrimitive(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
0253     {
0254         return drawIndicatorArrowPrimitive(ArrowUp, option, painter, widget);
0255     }
0256
0257     bool drawIndicatorArrowDownPrimitive(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
0258     {
0259         return drawIndicatorArrowPrimitive(ArrowDown, option, painter, widget);
0260     }
0261
0262     bool drawIndicatorArrowLeftPrimitive(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
0263     {
0264         return drawIndicatorArrowPrimitive(ArrowLeft, option, painter, widget);
0265     }
0266
0267     bool drawIndicatorArrowRightPrimitive(const QStyleOption *option, QPainter *painter, const QWidget *widget) const
0268     {
0269         return drawIndicatorArrowPrimitive(ArrowRight, option, painter, widget);
0270     }
0271
0272     bool drawIndicatorArrowPrimitive(ArrowOrientation, const QStyleOption *, QPainter *, const QWidget *) const;
0273     bool drawIndicatorHeaderArrowPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0274     bool drawPanelButtonCommandPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0275     bool drawPanelButtonToolPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0276     bool drawTabBarPanelButtonToolPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0277     bool drawPanelScrollAreaCornerPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0278     bool drawPanelMenuPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0279     bool drawPanelTipLabelPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0280     bool drawPanelItemViewItemPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0281     bool drawIndicatorCheckBoxPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0282     bool drawIndicatorRadioButtonPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0283     bool drawIndicatorButtonDropDownPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0284     bool drawIndicatorTabClosePrimitive(const QStyleOption *, QPainter *painter, const QWidget *widget) const;
0285     bool drawIndicatorTabTearPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0286     bool drawIndicatorToolBarHandlePrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0287     bool drawIndicatorToolBarSeparatorPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0288     bool drawIndicatorBranchPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0289     bool drawDockWidgetResizeHandlePrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0290     bool drawPanelStatusBarPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0291     bool drawWidgetPrimitive(const QStyleOption *, QPainter *, const QWidget *) const;
0292
0293     //@}
0294
0295     //*@name controls specialized functions
0296     //@{
0297
0298     bool emptyControl(const QStyleOption *, QPainter *, const QWidget *) const
0299     {
0300         return true;
0301     }
0302
0303     bool drawPushButtonLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0304     bool drawToolButtonLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0305     bool drawCheckBoxLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0306     bool drawComboBoxLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0307     bool drawMenuBarItemControl(const QStyleOption *, QPainter *, const QWidget *) const;
0308     bool drawMenuItemControl(const QStyleOption *, QPainter *, const QWidget *) const;
0309     bool drawProgressBarControl(const QStyleOption *, QPainter *, const QWidget *) const;
0310     bool drawProgressBarContentsControl(const QStyleOption *, QPainter *, const QWidget *) const;
0311     bool drawProgressBarGrooveControl(const QStyleOption *, QPainter *, const QWidget *) const;
0312     bool drawProgressBarLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0313     bool drawScrollBarSliderControl(const QStyleOption *, QPainter *, const QWidget *) const;
0314     bool drawScrollBarAddLineControl(const QStyleOption *, QPainter *, const QWidget *) const;
0315     bool drawScrollBarSubLineControl(const QStyleOption *, QPainter *, const QWidget *) const;
0316     bool drawShapedFrameControl(const QStyleOption *, QPainter *, const QWidget *) const;
0317     bool drawFocusFrame(const QStyleOption *, QPainter *, const QWidget *) const;
0318     bool drawRubberBandControl(const QStyleOption *, QPainter *, const QWidget *) const;
0319     bool drawHeaderSectionControl(const QStyleOption *, QPainter *, const QWidget *) const;
0320     bool drawHeaderEmptyAreaControl(const QStyleOption *, QPainter *, const QWidget *) const;
0321     bool drawTabBarTabLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0322     bool drawTabBarTabShapeControl(const QStyleOption *, QPainter *, const QWidget *) const;
0323     bool drawToolBoxTabLabelControl(const QStyleOption *, QPainter *, const QWidget *) const;
0324     bool drawToolBoxTabShapeControl(const QStyleOption *, QPainter *, const QWidget *) const;
0325     bool drawDockWidgetTitleControl(const QStyleOption *, QPainter *, const QWidget *) const;
0326     bool drawSplitterControl(const QStyleOption *, QPainter *, const QWidget *) const;
0327
0328     //*@}
0329
0330     //*@name complex ontrols specialized functions
0331     //@{
0332     bool drawGroupBoxComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0333     bool drawToolButtonComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0334     bool drawComboBoxComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0335     bool drawSpinBoxComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0336     bool drawSliderComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0337     bool drawDialComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0338     bool drawScrollBarComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0339     bool drawTitleBarComplexControl(const QStyleOptionComplex *, QPainter *, const QWidget *) const;
0340     //@}
0341
0342     //!*@name various utility functions
0343     //@{
0344
0345     //* spinbox arrows
0346     void renderSpinBoxArrow(const SubControl &, const QStyleOptionSpinBox *, QPainter *, const QWidget *) const;
0347
0348     //* return dial angle based on option and value
0349     qreal dialAngle(const QStyleOptionSlider *, int) const;
0350
0351     //* returns relevant scrollbar parent
0352     /** needed to detect parent focus */
0353     const QWidget *scrollBarParent(const QWidget *) const;
0354
0355     //* returns true if given scrollbar arrow is animated
0356     QColor scrollBarArrowColor(const QStyleOptionSlider *, const SubControl &, const QWidget *) const;
0357
0358     //* scrollbar buttons
0359     enum ScrollBarButtonType {
0360         NoButton,
0361         SingleButton,
0362         DoubleButton,
0363     };
0364
0365     //* returns height for scrollbar buttons depending of button types
0366     int scrollBarButtonHeight(const ScrollBarButtonType &type) const
0367     {
0368         switch (type) {
0369         case NoButton:
0370             return Metrics::ScrollBar_NoButtonHeight;
0371         case SingleButton:
0372             return Metrics::ScrollBar_SingleButtonHeight;
0373         case DoubleButton:
0374             return Metrics::ScrollBar_DoubleButtonHeight;
0375         default:
0376             return 0;
0377         }
0378     }
0379
0380     //@}
0381
0382     //* translucent background
0383     void setTranslucentBackground(QWidget *) const;
0384
0385     //* create toolbar extension icon
0386     QIcon toolBarExtensionIcon(StandardPixmap, const QStyleOption *, const QWidget *) const;
0387
0388     //* create title bar button icon
0389     QIcon titleBarButtonIcon(StandardPixmap, const QStyleOption *, const QWidget *) const;
0390
0391     //* return true if option corresponds to QtQuick control
0392     bool isQtQuickControl(const QStyleOption *, const QWidget *) const;
0393
0394     //@}
0395
0396     //* adjust rect based on provided margins
0397     QRect insideMargin(const QRect &r, int margin) const
0398     {
0399         return insideMargin(r, margin, margin);
0400     }
0401
0402     //* adjust rect based on provided margins
0403     QRect insideMargin(const QRect &r, int marginWidth, int marginHeight) const
0404     {
0405         return r.adjusted(marginWidth, marginHeight, -marginWidth, -marginHeight);
0406     }
0407
0408     //* expand size based on margins
0409     QSize expandSize(const QSize &size, int margin) const
0410     {
0411         return expandSize(size, margin, margin);
0412     }
0413
0414     //* expand size based on margins
0415     QSize expandSize(const QSize &size, int marginWidth, int marginHeight) const
0416     {
0417         return size + 2 * QSize(marginWidth, marginHeight);
0418     }
0419
0420     //* returns true for vertical tabs
0421     bool isVerticalTab(const QStyleOptionTab *option) const
0422     {
0423         return isVerticalTab(option->shape);
0424     }
0425
0426     bool isVerticalTab(const QTabBar::Shape &shape) const
0427     {
0428         return shape == QTabBar::RoundedEast || shape == QTabBar::RoundedWest || shape == QTabBar::TriangularEast || shape == QTabBar::TriangularWest;
0429     }
0430
0431     //* right to left alignment handling
0432     using ParentStyleClass::visualRect;
0433     QRect visualRect(const QStyleOption *opt, const QRect &subRect) const
0434     {
0435         return ParentStyleClass::visualRect(opt->direction, opt->rect, subRect);
0436     }
0437
0438     //* centering
0439     QRect centerRect(const QRect &rect, const QSize &size) const
0440     {
0441         return centerRect(rect, size.width(), size.height());
0442     }
0443
0444     QRect centerRect(const QRect &rect, int width, int height) const
0445     {
0446         return QRect(rect.left() + (rect.width() - width) / 2, rect.top() + (rect.height() - height) / 2, width, height);
0447     }
0448
0449     static int sliderTickMarksLength();
0450
0451     static QRect sliderRectWithoutTickMarks(const QStyleOptionSlider *option);
0452
0453     /*
0454     Checks whether the point is before the bound rect for bound of given orientation.
0455     This is needed to implement custom number of buttons in scrollbars,
0456     as well as proper mouse-hover
0457     */
0458     inline bool preceeds(const QPoint &, const QRect &, const QStyleOption *) const;
0459
0460     //* return which arrow button is hit by point for scrollbar double buttons
0461     inline QStyle::SubControl scrollBarHitTest(const QRect &, const QPoint &, const QStyleOption *) const;
0462
0463     //! return true if one of the widget's parent inherits requested type
0464     inline bool hasParent(const QWidget *, const char *) const;
0465
0466     //* return true if icons should be shown in menus
0467     bool showIconsInMenuItems() const;
0468
0469     //* return true if icons should be shown on buttons
0470     bool showIconsOnPushButtons() const;
0471
0472     //* return true if passed widget is a menu title (KMenu::addTitle)
0473     bool hasAlteredBackground(const QWidget *) const;
0474
0475     /*
0476      * return true if the widget should be highlighted with neutral color
0477      * if widget is null, check for the styleObject in option
0478      * return false if the widget has the mouse hover or is focused.
0479      */
0480     bool hasHighlightNeutral(const QObject *widget, const QStyleOption *option, bool mouseOver = false, bool focus = false) const;
0481
0482     //*@name scrollbar button types (for addLine and subLine )
0483     //@{
0484     ScrollBarButtonType _addLineButtons = SingleButton;
0485     ScrollBarButtonType _subLineButtons = SingleButton;
0486     //@}
0487
0488     //* focus frame
0489     QPointer<QFocusFrame> _focusFrame = nullptr;
0490
0491     //* helper
0492     Helper *_helper = nullptr;
0493
0494     //* shadow helper
0495     ShadowHelper *_shadowHelper = nullptr;
0496
0497     //* animations
0498     Animations *_animations = nullptr;
0499
0500     //* keyboard accelerators
0501     Mnemonics *_mnemonics = nullptr;
0502
0503     //* blur helper
0504     BlurHelper *_blurHelper = nullptr;
0505
0506     //* window manager
0507     WindowManager *_windowManager = nullptr;
0508
0509     //* frame shadows
0510     FrameShadowFactory *_frameShadowFactory = nullptr;
0511
0512     //* mdi window shadows
0513     MdiWindowShadowFactory *_mdiWindowShadowFactory = nullptr;
0514
0515     //* splitter Factory, to extend splitters hit area
0516     SplitterFactory *_splitterFactory = nullptr;
0517
0518     //* signal manager for the tools area
0519     ToolsAreaManager *_toolsAreaManager = nullptr;
0520
0521     //* widget explorer
0522     WidgetExplorer *_widgetExplorer = nullptr;
0523
0524     //* tabbar data
0525     BreezePrivate::TabBarData *_tabBarData = nullptr;
0526
0527     //* icon hash
0528     using IconCache = QHash<StandardPixmap, QIcon>;
0529     IconCache _iconCache;
0530
0531     //* pointer to primitive specialized function
0532     using StylePrimitive = std::function<bool(const Style &, const QStyleOption *, QPainter *, const QWidget *)>;
0533     StylePrimitive _frameFocusPrimitive;
0534
0535     //* pointer to control specialized function
0536     using StyleControl = std::function<bool(const Style &, const QStyleOption *, QPainter *, const QWidget *)>;
0537
0538     //* pointer to control specialized function
0539     using StyleComplexControl = std::function<bool(const Style &, const QStyleOptionComplex *, QPainter *, const QWidget *)>;
0540
0541     //*@name custom elements
0542     //@{
0543
0544     //* use Argb Drag and Drop Window
0545     QStyle::StyleHint SH_ArgbDndWindow;
0546
0547     //! styled painting for KCapacityBar
0548     QStyle::ControlElement CE_CapacityBar;
0549
0550     //@}
0551 };
0552
0553 //_________________________________________________________________________
0554 bool Style::preceeds(const QPoint &point, const QRect &bound, const QStyleOption *option) const
0555 {
0556     if (option->state & QStyle::State_Horizontal) {
0557         if (option->direction == Qt::LeftToRight) {
0558             return point.x() < bound.right();
0559         } else {
0560             return point.x() > bound.x();
0561         }
0562
0563     } else {
0564         return point.y() < bound.y();
0565     }
0566 }
0567
0568 //_________________________________________________________________________
0569 QStyle::SubControl Style::scrollBarHitTest(const QRect &rect, const QPoint &point, const QStyleOption *option) const
0570 {
0571     if (option->state & QStyle::State_Horizontal) {
0572         if (option->direction == Qt::LeftToRight) {
0573             return point.x() < rect.center().x() ? QStyle::SC_ScrollBarSubLine : QStyle::SC_ScrollBarAddLine;
0574         } else {
0575             return point.x() > rect.center().x() ? QStyle::SC_ScrollBarSubLine : QStyle::SC_ScrollBarAddLine;
0576         }
0577
0578     } else {
0579         return point.y() < rect.center().y() ? QStyle::SC_ScrollBarSubLine : QStyle::SC_ScrollBarAddLine;
0580     }
0581 }
0582
0583 //_________________________________________________________________________
0584 bool Style::hasParent(const QWidget *widget, const char *className) const
0585 {
0586     if (!widget) {
0587         return false;
0588     }
0589
0590     while ((widget = widget->parentWidget())) {
0591         if (widget->inherits(className)) {
0592             return true;
0593         }
0594     }
0595
0596     return false;
0597 }
0598 }