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