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Diffstat (limited to 'tqtinterface/qt4/src/widgets/tqscrollbar.cpp')
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diff --git a/tqtinterface/qt4/src/widgets/tqscrollbar.cpp b/tqtinterface/qt4/src/widgets/tqscrollbar.cpp deleted file mode 100644 index 959ed28..0000000 --- a/tqtinterface/qt4/src/widgets/tqscrollbar.cpp +++ /dev/null @@ -1,1072 +0,0 @@ -/**************************************************************************** -** -** Implementation of TQScrollBar class -** -** Created : 940427 -** -** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA. -** -** This file is part of the widgets module of the TQt GUI Toolkit. -** -** This file may be used under the terms of the GNU General -** Public License versions 2.0 or 3.0 as published by the Free -** Software Foundation and appearing in the files LICENSE.GPL2 -** and LICENSE.GPL3 included in the packaging of this file. -** Alternatively you may (at your option) use any later version -** of the GNU General Public License if such license has been -** publicly approved by Trolltech ASA (or its successors, if any) -** and the KDE Free TQt Foundation. -** -** Please review the following information to ensure GNU General -** Public Licensing requirements will be met: -** http://trolltech.com/products/qt/licenses/licensing/opensource/. -** If you are unsure which license is appropriate for your use, please -** review the following information: -** http://trolltech.com/products/qt/licenses/licensing/licensingoverview -** or contact the sales department at sales@trolltech.com. -** -** This file may be used under the terms of the Q Public License as -** defined by Trolltech ASA and appearing in the file LICENSE.TQPL -** included in the packaging of this file. Licensees holding valid TQt -** Commercial licenses may use this file in accordance with the TQt -** Commercial License Agreement provided with the Software. -** -** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, -** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted -** herein. -** -**********************************************************************/ - -#include "tqscrollbar.h" -#ifndef TQT_NO_SCROLLBAR -#include "tqpainter.h" -#include "tqbitmap.h" -#include "tqapplication.h" -#include "tqtimer.h" -#include "tqstyle.h" -#ifndef TQT_NO_CURSOR -#include <tqcursor.h> -#endif -#if defined(TQT_ACCESSIBILITY_SUPPORT) -#include "tqaccessible.h" -#endif -#include <limits.h> - -/*! - \class TQScrollBar - \brief The TQScrollBar widget provides a vertical or horizontal scroll bar. - - \ingroup basic - - A scroll bar allows the user to control a value within a - program-definable range and gives users a visible indication of - the current value of a \link TQRangeControl range control \endlink. - - Scroll bars include four separate controls: - - \list - - \i The \e line-up and \e line-down controls are little buttons - which the user can use to move one "line" up or down. The meaning - of line is configurable. In editors and list boxes it means one - line of text; in an image viewer it might mean 20 pixels. - - \i The \e slider is the handle that indicates the current value of - the scroll bar, which the user can drag to change the value. This - part of the scroll bar is sometimes called the "thumb". - - \i The \e page-up/page-down control is the area on which the - slider slides (the scroll bar's background). Clicking here moves - the scroll bar towards the click. The meaning of "page" is also - configurable: in editors and list boxes it means as many lines as - there is space for in the widget. - - \endlist - - TQScrollBar has very few of its own functions; it mostly relies on - TQRangeControl. The most useful functions are setValue() to set the - scroll bar directly to some value; addPage(), addLine(), - subtractPage(), and subtractLine() to simulate the effects of - clicking (useful for accelerator keys); setSteps() to define the - values of pageStep() and lineStep(); and setRange() to set the - minValue() and maxValue() of the scroll bar. TQScrollBar has a - convenience constructor with which you can set most of these - properties. - - Some GUI styles (for example, the Windows and Motif styles - provided with TQt), also use the pageStep() value to calculate the - size of the slider. - - In addition to the access functions from TQRangeControl, TQScrollBar - provides a comprehensive set of Q_SIGNALS: - \table - \header \i Signal \i Emitted when - \row \i \l valueChanged() - \i the scroll bar's value has changed. The tracking() - determines whether this signal is emitted during user - interaction. - \row \i \l sliderPressed() - \i the user starts to drag the slider. - \row \i \l sliderMoved() - \i the user drags the slider. - \row \i \l sliderReleased() - \i the user releases the slider. - \row \i \l nextLine() - \i the scroll bar has moved one line down or right. Line is - defined in TQRangeControl. - \row \i \l prevLine() - \i the scroll bar has moved one line up or left. - \row \i \l nextPage() - \i the scroll bar has moved one page down or right. - \row \i \l prevPage() - \i the scroll bar has moved one page up or left. - \endtable - - TQScrollBar only provides integer ranges. Note that although - TQScrollBar handles very large numbers, scroll bars on current - screens cannot usefully control ranges above about 100,000 pixels. - Beyond that, it becomes difficult for the user to control the - scroll bar using either the keyboard or the mouse. - - A scroll bar can be controlled by the keyboard, but it has a - default focusPolicy() of \c NoFocus. Use setFocusPolicy() to - enable keyboard focus. See keyPressEvent() for a list of key - bindings. - - If you need to add scroll bars to an interface, consider using the - TQScrollView class, which encapsulates the common uses for scroll - bars. - - <img src=qscrbar-m.png> <img src=qscrbar-w.png> - - \sa TQSlider TQSpinBox TQScrollView - \link guibooks.html#fowler GUI Design Handbook: Scroll Bar\endlink -*/ - - -/*! - \fn void TQScrollBar::valueChanged( int value ) - - This signal is emitted when the scroll bar value has changed, with - the new scroll bar \a value as an argument. -*/ - -/*! - \fn void TQScrollBar::sliderPressed() - - This signal is emitted when the user presses the slider with the - mouse. -*/ - -/*! - \fn void TQScrollBar::sliderMoved( int value ) - - This signal is emitted when the slider is dragged by the user, with - the new scroll bar \a value as an argument. - - This signal is emitted even when tracking is turned off. - - \sa tracking() valueChanged() nextLine() prevLine() nextPage() - prevPage() -*/ - -/*! - \fn void TQScrollBar::sliderReleased() - - This signal is emitted when the user releases the slider with the - mouse. -*/ - -/*! - \fn void TQScrollBar::nextLine() - - This signal is emitted when the scroll bar scrolls one line down - or right. -*/ - -/*! - \fn void TQScrollBar::prevLine() - - This signal is emitted when the scroll bar scrolls one line up or - left. -*/ - -/*! - \fn void TQScrollBar::nextPage() - - This signal is emitted when the scroll bar scrolls one page down - or right. -*/ - -/*! - \fn void TQScrollBar::prevPage() - - This signal is emitted when the scroll bar scrolls one page up or - left. -*/ - - - -static const int thresholdTime = 500; -static const int repeatTime = 50; - -#define HORIZONTAL (orientation() == Qt::Horizontal) -#define VERTICAL !HORIZONTAL -#define MOTIF_BORDER 2 -#define SLIDER_MIN 9 - - -/*! - Constructs a vertical scroll bar. - - The \a parent and \a name arguments are sent on to the TQWidget - constructor. - - The \c minValue defaults to 0, the \c maxValue to 99, with a \c - lineStep size of 1 and a \c pageStep size of 10, and an initial - \c value of 0. -*/ - -TQScrollBar::TQScrollBar( TQWidget *parent, const char *name ) - : TQWidget( parent, name ), orient( Qt::Vertical ) -{ - init(); -} - -/*! - Constructs a scroll bar. - - The \a orientation must be \c Qt::Vertical or \c Qt::Horizontal. - - The \a parent and \a name arguments are sent on to the TQWidget - constructor. - - The \c minValue defaults to 0, the \c maxValue to 99, with a \c - lineStep size of 1 and a \c pageStep size of 10, and an initial - \c value of 0. -*/ - -TQScrollBar::TQScrollBar( Qt::Orientation orientation, TQWidget *parent, - const char *name ) - : TQWidget( parent, name ), orient( orientation ) -{ - init(); -} - -/*! - Constructs a scroll bar whose value can never be smaller than \a - minValue or greater than \a maxValue, whose line step size is \a - lineStep and page step size is \a pageStep and whose value is - initially \a value (which is guaranteed to be in range using - bound()). - - If \a orientation is \c Vertical the scroll bar is vertical and if - it is \c Horizontal the scroll bar is horizontal. - - The \a parent and \a name arguments are sent on to the TQWidget - constructor. -*/ - -TQScrollBar::TQScrollBar( int minValue, int maxValue, int lineStep, int pageStep, - int value, Qt::Orientation orientation, - TQWidget *parent, const char *name ) - : TQWidget( parent, name ), - TQRangeControl( minValue, maxValue, lineStep, pageStep, value ), - orient( orientation ) -{ - init(); -} - -/*! - Destructor. -*/ -TQScrollBar::~TQScrollBar() -{ -} - -void TQScrollBar::init() -{ - track = TRUE; - sliderPos = 0; - pressedControl = TQStyle::SC_None; - clickedAt = FALSE; - setFocusPolicy( Qt::NoFocus ); - - repeater = 0; - - setBackgroundMode((TQt::BackgroundMode) - tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_BackgroundMode)); - - TQSizePolicy sp( TQSizePolicy::Minimum, TQSizePolicy::Fixed ); - if ( orient == Qt::Vertical ) - sp.transpose(); - tqsetSizePolicy( sp ); - clearWState( TQt::WState_OwnSizePolicy ); -} - - -/*! - \property TQScrollBar::orientation - \brief the orientation of the scroll bar - - The orientation must be \l Qt::Vertical (the default) or \l - Qt::Horizontal. -*/ - -void TQScrollBar::setOrientation( Qt::Orientation orientation ) -{ - if ( orientation == orient ) - return; - if ( !testWState( TQt::WState_OwnSizePolicy ) ) { - TQSizePolicy sp = tqsizePolicy(); - sp.transpose(); - tqsetSizePolicy( sp ); - clearWState( TQt::WState_OwnSizePolicy ); - } - - orient = orientation; - - positionSliderFromValue(); - update(); - updateGeometry(); -} - -/*! - \property TQScrollBar::tracking - \brief whether scroll bar tracking is enabled - - If tracking is enabled (the default), the scroll bar emits the - valueChanged() signal while the slider is being dragged. If - tracking is disabled, the scroll bar emits the valueChanged() - signal only when the user releases the mouse button after moving - the slider. -*/ - - -/*! - \property TQScrollBar::draggingSlider - \brief whether the user has clicked the mouse on the slider and is currently dragging it -*/ - -bool TQScrollBar::draggingSlider() const -{ - return pressedControl == TQStyle::SC_ScrollBarSlider; -} - - -/*! - Reimplements the virtual function TQWidget::setPalette(). - - Sets the background color to the mid color for Motif style scroll - bars using palette \a p. -*/ - -void TQScrollBar::setPalette( const TQPalette &p ) -{ - TQWidget::setPalette( p ); - setBackgroundMode((TQt::BackgroundMode) - tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_BackgroundMode)); -} - - -/*! \reimp */ -TQSize TQScrollBar::tqsizeHint() const -{ - constPolish(); - int sbextent = tqstyle().tqpixelMetric(TQStyle::PM_ScrollBarExtent, this); - - if ( orient == Qt::Horizontal ) { - return TQSize( 30, sbextent ); - } else { - return TQSize( sbextent, 30 ); - } -} - -/*! \fn void TQScrollBar::tqsetSizePolicy( TQSizePolicy::SizeType, TQSizePolicy::SizeType, bool ) - \reimp -*/ - -/*! \reimp */ -void TQScrollBar::tqsetSizePolicy( TQSizePolicy sp ) -{ - //## remove 4.0 - TQWidget::tqsetSizePolicy( sp ); -} - -/*! - \internal - Implements the virtual TQRangeControl function. -*/ - -void TQScrollBar::valueChange() -{ - int tmp = sliderPos; - positionSliderFromValue(); - if ( tmp != sliderPos && isVisible() ) - tqdrawControls(TQStyle::SC_ScrollBarAddPage | - TQStyle::SC_ScrollBarSubPage | - TQStyle::SC_ScrollBarSlider, - pressedControl ); - emit valueChanged(value()); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged ); -#endif -} - -/*! - \internal - Implements the virtual TQRangeControl function. -*/ - -void TQScrollBar::stepChange() -{ - rangeChange(); -} - -/*! - \internal - Implements the virtual TQRangeControl function. -*/ - -void TQScrollBar::rangeChange() -{ - positionSliderFromValue(); - - if ( isVisible() ) - tqdrawControls(TQStyle::SC_ScrollBarAddLine | - TQStyle::SC_ScrollBarSubLine | - TQStyle::SC_ScrollBarAddPage | - TQStyle::SC_ScrollBarSubPage | - TQStyle::SC_ScrollBarFirst | - TQStyle::SC_ScrollBarLast | - TQStyle::SC_ScrollBarSlider, - pressedControl ); -} - - -/*! - Handles timer events for the scroll bar. -*/ - -void TQScrollBar::doAutoRepeat() -{ - bool sendRepeat = clickedAt; -#if !defined( TQT_NO_CURSOR ) && !defined( TQT_NO_STYLE ) - if(sendRepeat && (pressedControl == TQStyle::SC_ScrollBarAddPage || - pressedControl == TQStyle::SC_ScrollBarSubPage) && - tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_StopMouseOverSlider, this) && - tqstyle().querySubControl(TQStyle::CC_ScrollBar, this, - mapFromGlobal(TQCursor::pos()) ) == TQStyle::SC_ScrollBarSlider) - sendRepeat = FALSE; -#endif - if ( sendRepeat ){ - if ( repeater ) - repeater->changeInterval( repeatTime ); - action( (TQStyle::SubControl) pressedControl ); - TQApplication::syncX(); - } else { - stopAutoRepeat(); - } -} - - -/*! - Starts the auto-repeat logic. Some time after this function is - called, the auto-repeat starts taking effect and from then on - repeats until stopAutoRepeat() is called. -*/ - -void TQScrollBar::startAutoRepeat() -{ - if ( !repeater ) { - repeater = new TQTimer( this, "auto-repeat timer" ); - connect( repeater, TQT_SIGNAL(timeout()), - this, TQT_SLOT(doAutoRepeat()) ); - } - repeater->start( thresholdTime, FALSE ); -} - - -/*! - Stops the auto-repeat logic. -*/ - -void TQScrollBar::stopAutoRepeat() -{ - delete repeater; - repeater = 0; -} - - -/*! - \reimp -*/ -#ifndef TQT_NO_WHEELEVENT -void TQScrollBar::wheelEvent( TQWheelEvent *e ) -{ - static float offset = 0; - static TQScrollBar* offset_owner = 0; - if (offset_owner != this){ - offset_owner = this; - offset = 0; - } - if ( e->orientation() != orient && !TQT_TQRECT_OBJECT(rect()).contains(e->pos()) ) - return; - e->accept(); - int step = TQMIN( TQApplication::wheelScrollLines()*lineStep(), - pageStep() ); - if ( ( e->state() & ControlButton ) || ( e->state() & ShiftButton ) ) - step = pageStep(); - offset += -e->delta()*step/120; - if (TQABS(offset)<1) - return; - setValue( value() + int(offset) ); - offset -= int(offset); -} -#endif - -/*! - \reimp -*/ -void TQScrollBar::keyPressEvent( TQKeyEvent *e ) -{ - // \list - // \i Left/Right move a horizontal scrollbar by one line. - // \i Up/Down move a vertical scrollbar by one line. - // \i PageUp moves up one page. - // \i PageDown moves down one page. - // \i Home moves to the start (minValue()). - // \i End moves to the end (maxValue()). - // \endlist - - // Note that unless you call setFocusPolicy(), the default NoFocus - // will apply and the user will not be able to use the keyboard to - // interact with the scrollbar. - switch ( e->key() ) { - case Qt::Key_Left: - if ( orient == Qt::Horizontal ) - subtractLine(); - break; - case Qt::Key_Right: - if ( orient == Qt::Horizontal ) - addLine(); - break; - case Qt::Key_Up: - if ( orient == Qt::Vertical ) - subtractLine(); - break; - case Qt::Key_Down: - if ( orient == Qt::Vertical ) - addLine(); - break; - case Qt::Key_PageUp: - subtractPage(); - break; - case Qt::Key_PageDown: - addPage(); - break; - case Qt::Key_Home: - setValue( minValue() ); - break; - case Qt::Key_End: - setValue( maxValue() ); - break; - default: - e->ignore(); - break; - } -} - - -/*! - \reimp -*/ -void TQScrollBar::resizeEvent( TQResizeEvent * ) -{ - positionSliderFromValue(); -} - - -/*! - \reimp -*/ -void TQScrollBar::paintEvent( TQPaintEvent * ) -{ - TQPainter p( this ); - tqdrawControls(TQStyle::SC_ScrollBarAddLine | - TQStyle::SC_ScrollBarSubLine | - TQStyle::SC_ScrollBarAddPage | - TQStyle::SC_ScrollBarSubPage | - TQStyle::SC_ScrollBarFirst | - TQStyle::SC_ScrollBarLast | - TQStyle::SC_ScrollBarSlider, - pressedControl, &p ); -} - -static TQCOORD sliderStartPos = 0; - -/*! - \reimp - */ -void TQScrollBar::contextMenuEvent( TQContextMenuEvent *e ) -{ - if(clickedAt) - e->consume(); - else - e->ignore(); -} - -/*! - \reimp -*/ -void TQScrollBar::mousePressEvent( TQMouseEvent *e ) -{ - bool midButtonAbsPos = - tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_MiddleClickAbsolutePosition, - this); - - if ( !(e->button() == Qt::LeftButton || - (midButtonAbsPos && e->button() == Qt::MidButton) ) ) - return; - - if ( maxValue() == minValue() ) // nothing to be done - return; - - if ( e->state() & Qt::MouseButtonMask ) // another button was already pressed - return; - - clickedAt = TRUE; - pressedControl = tqstyle().querySubControl(TQStyle::CC_ScrollBar, this, e->pos() ); - - if ( (pressedControl == TQStyle::SC_ScrollBarAddPage || - pressedControl == TQStyle::SC_ScrollBarSubPage || - pressedControl == TQStyle::SC_ScrollBarSlider ) && - ((midButtonAbsPos && e->button() == Qt::MidButton) || - (tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_LeftClickAbsolutePosition) && e->button() == Qt::LeftButton))) { - - TQRect sr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarSlider ), - gr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarGroove ); - int sliderMin, sliderMax, sliderLength; - sliderMin = sliderMax = sliderLength = 0; - if (HORIZONTAL) { - sliderMin = gr.x(); - sliderMax = sliderMin + gr.width(); - sliderLength = sr.width(); - } else { - sliderMin = gr.y(); - sliderMax = sliderMin + gr.height(); - sliderLength = sr.height(); - } - - int newSliderPos = (HORIZONTAL ? e->pos().x() : e->pos().y()) - - sliderLength/2; - newSliderPos = TQMIN( newSliderPos, sliderMax - sliderLength ); - newSliderPos = TQMAX( newSliderPos, sliderMin ); - setValue( sliderPosToRangeValue(newSliderPos) ); - sliderPos = newSliderPos; - pressedControl = TQStyle::SC_ScrollBarSlider; - } - - if ( pressedControl == TQStyle::SC_ScrollBarSlider ) { - clickOffset = (TQCOORD)( (HORIZONTAL ? e->pos().x() : e->pos().y()) - - sliderPos ); - slidePrevVal = value(); - sliderStartPos = sliderPos; - tqdrawControls( pressedControl, pressedControl ); - emit sliderPressed(); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ScrollingStart ); -#endif - } else if ( pressedControl != TQStyle::SC_None ) { - tqdrawControls( pressedControl, pressedControl ); - action( (TQStyle::SubControl) pressedControl ); - startAutoRepeat(); - } -} - - -/*! - \reimp -*/ -void TQScrollBar::mouseReleaseEvent( TQMouseEvent *e ) -{ - if ( !clickedAt ) - return; - - if ( e->stateAfter() & Qt::MouseButtonMask ) // some other button is still pressed - return; - - TQStyle::SubControl tmp = (TQStyle::SubControl) pressedControl; - clickedAt = FALSE; - stopAutoRepeat(); - mouseMoveEvent( e ); // Might have moved since last mouse move event. - pressedControl = TQStyle::SC_None; - - if (tmp == TQStyle::SC_ScrollBarSlider) { - directSetValue( calculateValueFromSlider() ); - emit sliderReleased(); - if ( value() != prevValue() ) { - emit valueChanged( value() ); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged ); -#endif - } -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ScrollingEnd ); -#endif - } - tqdrawControls( tmp, pressedControl ); - if ( e->button() == Qt::MidButton ) - tqrepaint( FALSE ); -} - - -/*! - \reimp -*/ -void TQScrollBar::mouseMoveEvent( TQMouseEvent *e ) -{ - if ( !isVisible() ) { - clickedAt = FALSE; - return; - } - - bool mcab = tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_MiddleClickAbsolutePosition, - this); - if ( ! clickedAt || ! (e->state() & Qt::LeftButton || - ((e->state() & Qt::MidButton) && mcab))) - return; - - int newSliderPos; - if ( pressedControl == TQStyle::SC_ScrollBarSlider ) { - TQRect gr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarGroove ), - sr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarSlider ); - int sliderMin, sliderMax, sliderLength; - - if (HORIZONTAL) { - sliderLength = sr.width(); - sliderMin = gr.x(); - sliderMax = gr.right() - sliderLength + 1; - } else { - sliderLength = sr.height(); - sliderMin = gr.y(); - sliderMax = gr.bottom() - sliderLength + 1; - } - - TQRect r = rect(); - int m = tqstyle().tqpixelMetric(TQStyle::PM_MaximumDragDistance, this); - if ( m >= 0 ) { - if ( orientation() == Qt::Horizontal ) - r.setRect( r.x() - m, r.y() - 2*m, r.width() + 2*m, r.height() + 4*m ); - else - r.setRect( r.x() - 2*m, r.y() - m, r.width() + 4*m, r.height() + 2*m ); - if (! r.contains( e->pos())) - newSliderPos = sliderStartPos; - else - newSliderPos = (HORIZONTAL ? e->pos().x() : - e->pos().y()) -clickOffset; - } else - newSliderPos = (HORIZONTAL ? e->pos().x() : - e->pos().y()) -clickOffset; - - if ( newSliderPos < sliderMin ) - newSliderPos = sliderMin; - else if ( newSliderPos > sliderMax ) - newSliderPos = sliderMax; - int newVal = sliderPosToRangeValue(newSliderPos); - if ( newVal != slidePrevVal ) - emit sliderMoved( newVal ); - if ( track && newVal != value() ) { - directSetValue( newVal ); // Set directly, painting done below - emit valueChanged( value() ); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged ); -#endif - } - slidePrevVal = newVal; - sliderPos = (TQCOORD)newSliderPos; - tqdrawControls( TQStyle::SC_ScrollBarAddPage | - TQStyle::SC_ScrollBarSlider | - TQStyle::SC_ScrollBarSubPage, - pressedControl ); - } else if (! tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_ScrollWhenPointerLeavesControl)) { - // stop scrolling when the mouse pointer leaves a control - // similar to push buttons - if ( pressedControl != (uint)tqstyle().querySubControl(TQStyle::CC_ScrollBar, this, e->pos() ) ) { - tqdrawControls( pressedControl, TQStyle::SC_None ); - stopAutoRepeat(); - } else if ( !repeater ) { - tqdrawControls( pressedControl, pressedControl ); - action( (TQStyle::SubControl) pressedControl ); - startAutoRepeat(); - } - } -} - - -/*! - \fn int TQScrollBar::sliderStart() const - - Returns the pixel position where the scroll bar slider starts. - - This is equivalent to sliderRect().y() for vertical scroll bars or - sliderRect().x() for horizontal scroll bars. -*/ - -/*! - Returns the scroll bar slider rectangle. - - \sa sliderStart() -*/ - -TQRect TQScrollBar::sliderRect() const -{ - return tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarSlider ); -} - -void TQScrollBar::positionSliderFromValue() -{ - sliderPos = (TQCOORD)rangeValueToSliderPos( value() ); -} - -int TQScrollBar::calculateValueFromSlider() const -{ - return sliderPosToRangeValue( sliderPos ); -} - -int TQScrollBar::rangeValueToSliderPos( int v ) const -{ - TQRect gr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarGroove ); - TQRect sr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarSlider ); - int sliderMin, sliderMax, sliderLength; - - if (HORIZONTAL) { - sliderLength = sr.width(); - sliderMin = gr.x(); - sliderMax = gr.right() - sliderLength + 1; - } else { - sliderLength = sr.height(); - sliderMin = gr.y(); - sliderMax = gr.bottom() - sliderLength + 1; - } - - return positionFromValue( v, sliderMax-sliderMin ) + sliderMin; -} - -int TQScrollBar::sliderPosToRangeValue( int pos ) const -{ - TQRect gr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarGroove ); - TQRect sr = tqstyle().querySubControlMetrics(TQStyle::CC_ScrollBar, this, - TQStyle::SC_ScrollBarSlider ); - int sliderMin, sliderMax, sliderLength; - - if (HORIZONTAL) { - sliderLength = sr.width(); - sliderMin = gr.x(); - sliderMax = gr.right() - sliderLength + 1; - } else { - sliderLength = sr.height(); - sliderMin = gr.y(); - sliderMax = gr.bottom() - sliderLength + 1; - } - - return valueFromPosition( pos - sliderMin, sliderMax - sliderMin ); -} - - -void TQScrollBar::action( int control ) -{ - switch( control ) { - case TQStyle::SC_ScrollBarAddLine: - addLine(); - emit nextLine(); - break; - case TQStyle::SC_ScrollBarSubLine: - subtractLine(); - emit prevLine(); - break; - case TQStyle::SC_ScrollBarAddPage: - addPage(); - emit nextPage(); - break; - case TQStyle::SC_ScrollBarSubPage: - subtractPage(); - emit prevPage(); - break; - case TQStyle::SC_ScrollBarFirst: - setValue( minValue() ); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged ); -#endif - emit valueChanged( minValue() ); - break; - case TQStyle::SC_ScrollBarLast: - setValue( maxValue() ); -#if defined(TQT_ACCESSIBILITY_SUPPORT) - TQAccessible::updateAccessibility( this, 0, TQAccessible::ValueChanged ); -#endif - emit valueChanged( maxValue() ); - break; - default: - break; - } -} - - -void TQScrollBar::tqdrawControls( uint controls, uint activeControl ) const -{ - TQPainter p ( this ); - tqdrawControls( controls, activeControl, &p ); -} - - -void TQScrollBar::tqdrawControls( uint controls, uint activeControl, - TQPainter *p ) const -{ - if ( !isUpdatesEnabled() ) - return; - - TQStyle::SFlags flags = TQStyle::Style_Default; - if (isEnabled()) - flags |= TQStyle::Style_Enabled; - if (hasFocus()) - flags |= TQStyle::Style_HasFocus; - if ( orientation() == Qt::Horizontal ) - flags |= TQStyle::Style_Horizontal; - - tqstyle().tqdrawComplexControl(TQStyle::CC_ScrollBar, p, this, rect(), tqcolorGroup(), - flags, (TQStyle::SubControl) controls, - (TQStyle::SubControl) activeControl ); -} - -/*! - \reimp -*/ -void TQScrollBar::styleChange( TQStyle& old ) -{ - positionSliderFromValue(); - setBackgroundMode((TQt::BackgroundMode) - tqstyle().tqstyleHint(TQStyle::SH_ScrollBar_BackgroundMode)); - TQWidget::styleChange( old ); -} - -/*! - \property TQScrollBar::minValue - \brief the scroll bar's minimum value - - When setting this property, the \l TQScrollBar::maxValue is - adjusted if necessary to ensure that the range remains valid. - - \sa setRange() -*/ -int TQScrollBar::minValue() const -{ - return TQRangeControl::minValue(); -} - -void TQScrollBar::setMinValue( int minVal ) -{ - TQRangeControl::setMinValue( minVal ); -} - -/*! - \property TQScrollBar::maxValue - \brief the scroll bar's maximum value - - When setting this property, the \l TQScrollBar::minValue is - adjusted if necessary to ensure that the range remains valid. - - \sa setRange() -*/ -int TQScrollBar::maxValue() const -{ - return TQRangeControl::maxValue(); -} - -void TQScrollBar::setMaxValue( int maxVal ) -{ - TQRangeControl::setMaxValue( maxVal ); -} - -/*! - \property TQScrollBar::lineStep - \brief the line step - - When setting lineStep, the virtual stepChange() function will be - called if the new line step is different from the previous - setting. - - \sa setSteps() TQRangeControl::pageStep() setRange() -*/ - -int TQScrollBar::lineStep() const -{ - return TQRangeControl::lineStep(); -} - -/*! - \property TQScrollBar::pageStep - \brief the page step - - When setting pageStep, the virtual stepChange() function will be - called if the new page step is different from the previous - setting. - - \sa TQRangeControl::setSteps() setLineStep() setRange() -*/ - -int TQScrollBar::pageStep() const -{ - return TQRangeControl::pageStep(); -} - -void TQScrollBar::setLineStep( int i ) -{ - setSteps( i, pageStep() ); -} - -void TQScrollBar::setPageStep( int i ) -{ - setSteps( lineStep(), i ); -} - -/*! - \property TQScrollBar::value - \brief the scroll bar's value - - \sa TQRangeControl::value() prevValue() -*/ - -int TQScrollBar::value() const -{ - return TQRangeControl::value(); -} - -void TQScrollBar::setValue( int i ) -{ - TQRangeControl::setValue( i ); -} - - -/*! - This function is called when the scrollbar is hidden. -*/ -void TQScrollBar::hideEvent( TQHideEvent* ) -{ - pressedControl = TQStyle::SC_None; - clickedAt = FALSE; -} - - -#undef ADD_LINE_ACTIVE -#undef SUB_LINE_ACTIVE -#endif |