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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-08 12:31:36 -0600
commitd796c9dd933ab96ec83b9a634feedd5d32e1ba3f (patch)
tree6e3dcca4f77e20ec8966c666aac7c35bd4704053 /src/widgets/qbutton.cpp
downloadtqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.tar.gz
tqt3-d796c9dd933ab96ec83b9a634feedd5d32e1ba3f.zip
Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731
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+/****************************************************************************
+**
+** Implementation of TQButton widget class
+**
+** Created : 940206
+**
+** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
+**
+** 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 retquirements 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.
+**
+**********************************************************************/
+
+#undef QT_NO_COMPAT
+#include "qbutton.h"
+#ifndef QT_NO_BUTTON
+#include "qbuttongroup.h"
+#include "qbitmap.h"
+#include "qpainter.h"
+#include "qtimer.h"
+#include "qaccel.h"
+#include "qpixmapcache.h"
+#include "qapplication.h"
+#include "qpushbutton.h"
+#include "qradiobutton.h"
+#include "qguardedptr.h"
+#include "../kernel/qinternal_p.h"
+
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+#include "qaccessible.h"
+#endif
+
+#define AUTO_REPEAT_DELAY 300
+#define AUTO_REPEAT_PERIOD 100
+
+class TQButtonData
+{
+public:
+ TQButtonData() {
+#ifndef QT_NO_BUTTONGROUP
+ group = 0;
+#endif
+#ifndef QT_NO_ACCEL
+ a = 0;
+#endif
+ }
+#ifndef QT_NO_BUTTONGROUP
+ TQButtonGroup *group;
+#endif
+ TQTimer timer;
+#ifndef QT_NO_ACCEL
+ TQAccel *a;
+#endif
+};
+
+
+void TQButton::ensureData()
+{
+ if ( !d ) {
+ d = new TQButtonData;
+ Q_CHECK_PTR( d );
+ connect(&d->timer, SIGNAL(timeout()), this, SLOT(autoRepeatTimeout()));
+ }
+}
+
+
+/*!
+ Returns the group that this button belongs to.
+
+ If the button is not a member of any TQButtonGroup, this function
+ returns 0.
+
+ \sa TQButtonGroup
+*/
+
+TQButtonGroup *TQButton::group() const
+{
+#ifndef QT_NO_BUTTONGROUP
+ return d ? d->group : 0;
+#else
+ return 0;
+#endif
+}
+
+
+void TQButton::setGroup( TQButtonGroup* g )
+{
+#ifndef QT_NO_BUTTONGROUP
+ ensureData();
+ d->group = g;
+#endif
+}
+
+
+TQTimer *TQButton::timer()
+{
+ ensureData();
+ return &d->timer;
+}
+
+
+/*!
+ \class TQButton qbutton.h
+ \brief The TQButton class is the abstract base class of button
+ widgets, providing functionality common to buttons.
+
+ \ingroup abstractwidgets
+
+ <b>If you want to create a button use TQPushButton.</b>
+
+ The TQButton class implements an \e abstract button, and lets
+ subclasses specify how to reply to user actions and how to draw
+ the button.
+
+ TQButton provides both push and toggle buttons. The TQRadioButton
+ and TQCheckBox classes provide only toggle buttons; TQPushButton and
+ TQToolButton provide both toggle and push buttons.
+
+ Any button can have either a text or pixmap label. setText() sets
+ the button to be a text button and setPixmap() sets it to be a
+ pixmap button. The text/pixmap is manipulated as necessary to
+ create the "disabled" appearance when the button is disabled.
+
+ TQButton provides most of the states used for buttons:
+ \list
+ \i isDown() indicates whether the button is \e pressed down.
+ \i isOn() indicates whether the button is \e on.
+ Only toggle buttons can be switched on and off (see below).
+ \i isEnabled() indicates whether the button can be pressed by the
+ user.
+ \i setAutoRepeat() sets whether the button will auto-repeat
+ if the user holds it down.
+ \i setToggleButton() sets whether the button is a toggle
+ button or not.
+ \endlist
+
+ The difference between isDown() and isOn() is as follows: When the
+ user clicks a toggle button to toggle it on, the button is first
+ \e pressed and then released into the \e on state. When the user
+ clicks it again (to toggle it off), the button moves first to the
+ \e pressed state, then to the \e off state (isOn() and isDown()
+ are both FALSE).
+
+ Default buttons (as used in many dialogs) are provided by
+ TQPushButton::setDefault() and TQPushButton::setAutoDefault().
+
+ TQButton provides five signals:
+ \list 1
+ \i pressed() is emitted when the button is pressed. E.g. with the mouse
+ or when animateClick() is called.
+ \i released() is emitted when the button is released. E.g. when the mouse
+ is released or the cursor is moved outside the widget.
+ \i clicked() is emitted when the button is first pressed and then
+ released when the accelerator key is typed, or when
+ animateClick() is called.
+ \i toggled(bool) is emitted when the state of a toggle button changes.
+ \i stateChanged(int) is emitted when the state of a tristate
+ toggle button changes.
+ \endlist
+
+ If the button is a text button with an ampersand (\&) in its text,
+ TQButton creates an automatic accelerator key. This code creates a
+ push button labelled "Ro<u>c</u>k \& Roll" (where the c is
+ underlined). The button gets an automatic accelerator key, Alt+C:
+
+ \code
+ TQPushButton *p = new TQPushButton( "Ro&ck && Roll", this );
+ \endcode
+
+ In this example, when the user presses Alt+C the button will call
+ animateClick().
+
+ You can also set a custom accelerator using the setAccel()
+ function. This is useful mostly for pixmap buttons because they
+ have no automatic accelerator.
+
+ \code
+ p->setPixmap( TQPixmap("print.png") );
+ p->setAccel( ALT+Key_F7 );
+ \endcode
+
+ All of the buttons provided by TQt (\l TQPushButton, \l TQToolButton,
+ \l TQCheckBox and \l TQRadioButton) can display both text and
+ pixmaps.
+
+ To subclass TQButton, you must reimplement at least drawButton()
+ (to draw the button's outline) and drawButtonLabel() (to draw its
+ text or pixmap). It is generally advisable to reimplement
+ sizeHint() as well, and sometimes hitButton() (to determine
+ whether a button press is within the button).
+
+ To reduce flickering, TQButton::paintEvent() sets up a pixmap that
+ the drawButton() function draws in. You should not reimplement
+ paintEvent() for a subclass of TQButton unless you want to take
+ over all drawing.
+
+ \sa TQButtonGroup
+*/
+
+
+/*!
+ \enum TQButton::ToggleType
+
+ This enum type defines what a button can do in response to a
+ mouse/keyboard press:
+
+ \value SingleShot pressing the button causes an action, then the
+ button returns to the unpressed state.
+
+ \value Toggle pressing the button toggles it between an \c On and
+ an \c Off state.
+
+ \value Tristate pressing the button cycles between the three
+ states \c On, \c Off and \c NoChange
+*/
+
+/*!
+ \enum TQButton::ToggleState
+
+ This enum defines the state of a toggle button.
+
+ \value Off the button is in the "off" state
+ \value NoChange the button is in the default/unchanged state
+ \value On the button is in the "on" state
+*/
+
+/*!
+ \property TQButton::accel
+ \brief the accelerator associated with the button
+
+ This property is 0 if there is no accelerator set. If you set this
+ property to 0 then any current accelerator is removed.
+*/
+
+/*!
+ \property TQButton::autoRepeat
+ \brief whether autoRepeat is enabled
+
+ If autoRepeat is enabled then the clicked() signal is emitted at
+ regular intervals if the button is down. This property has no
+ effect on toggle buttons. autoRepeat is off by default.
+*/
+
+/*! \property TQButton::autoResize
+ \brief whether autoResize is enabled
+ \obsolete
+
+ If autoResize is enabled then the button will resize itself
+ whenever the contents are changed.
+*/
+
+/*!
+ \property TQButton::down
+ \brief whether the button is pressed
+
+ If this property is TRUE, the button is pressed down. The signals
+ pressed() and clicked() are not emitted if you set this property
+ to TRUE. The default is FALSE.
+*/
+
+/*!
+ \property TQButton::exclusiveToggle
+ \brief whether the button is an exclusive toggle
+
+ If this property is TRUE and the button is in a TQButtonGroup, the
+ button can only be toggled off by another one being toggled on.
+ The default is FALSE.
+*/
+
+/*!
+ \property TQButton::on
+ \brief whether the button is toggled
+
+ This property should only be set for toggle buttons.
+*/
+
+/*!
+ \fn void TQButton::setOn( bool on )
+
+ Sets the state of this button to On if \a on is TRUE; otherwise to
+ Off.
+
+ \sa toggleState
+*/
+
+/*!
+ \property TQButton::pixmap
+ \brief the pixmap shown on the button
+
+ If the pixmap is monochrome (i.e. it is a TQBitmap or its \link
+ TQPixmap::depth() depth\endlink is 1) and it does not have a mask,
+ this property will set the pixmap to be its own mask. The purpose
+ of this is to draw transparent bitmaps which are important for
+ toggle buttons, for example.
+
+ pixmap() returns 0 if no pixmap was set.
+*/
+
+/*!
+ \property TQButton::text
+ \brief the text shown on the button
+
+ This property will return a TQString::null if the button has no
+ text. If the text has an ampersand (\&) in it, then an
+ accelerator is automatically created for it using the character
+ that follows the '\&' as the accelerator key. Any previous
+ accelerator will be overwritten, or cleared if no accelerator is
+ defined by the text.
+
+ There is no default text.
+*/
+
+/*!
+ \property TQButton::toggleButton
+ \brief whether the button is a toggle button
+
+ The default value is FALSE.
+*/
+
+/*!
+ \fn TQButton::setToggleButton( bool b )
+
+ If \a b is TRUE, this button becomes a toggle button; if \a b is
+ FALSE, this button becomes a command button.
+
+ \sa toggleButton
+*/
+
+/*!
+ \property TQButton::toggleState
+ \brief the state of the toggle button
+
+ If this property is changed then it does not cause the button
+ to be repainted.
+*/
+
+/*!
+ \property TQButton::toggleType
+ \brief the type of toggle on the button
+
+ The default toggle type is \c SingleShot.
+
+ \sa TQButton::ToggleType
+*/
+
+/*!
+ Constructs a standard button called \a name with parent \a parent,
+ using the widget flags \a f.
+
+ If \a parent is a TQButtonGroup, this constructor calls
+ TQButtonGroup::insert().
+*/
+
+TQButton::TQButton( TQWidget *parent, const char *name, WFlags f )
+ : TQWidget( parent, name, f )
+{
+ bpixmap = 0;
+ toggleTyp = SingleShot; // button is simple
+ buttonDown = FALSE; // button is up
+ stat = Off; // button is off
+ mlbDown = FALSE; // mouse left button up
+ autoresize = FALSE; // not auto resizing
+ animation = FALSE; // no pending animateClick
+ repeat = FALSE; // not in autorepeat mode
+ d = 0;
+#ifndef QT_NO_BUTTONGROUP
+ if ( ::qt_cast<TQButtonGroup*>(parent) ) {
+ setGroup((TQButtonGroup*)parent);
+ group()->insert( this ); // insert into button group
+ }
+#endif
+ setFocusPolicy( TabFocus );
+}
+
+/*!
+ Destroys the button.
+ */
+TQButton::~TQButton()
+{
+#ifndef QT_NO_BUTTONGROUP
+ if ( group() )
+ group()->remove( this );
+#endif
+ delete bpixmap;
+ delete d;
+}
+
+
+/*!
+ \fn void TQButton::pressed()
+
+ This signal is emitted when the button is pressed down.
+
+ \sa released(), clicked()
+*/
+
+/*!
+ \fn void TQButton::released()
+
+ This signal is emitted when the button is released.
+
+ \sa pressed(), clicked(), toggled()
+*/
+
+/*!
+ \fn void TQButton::clicked()
+
+ This signal is emitted when the button is activated (i.e. first
+ pressed down and then released when the mouse cursor is inside the
+ button), when the accelerator key is typed or when animateClick()
+ is called. This signal is \e not emitted if you call setDown().
+
+ The TQButtonGroup::clicked() signal does the same job, if you want
+ to connect several buttons to the same slot.
+
+ \warning Don't launch a model dialog in response to this signal
+ for a button that has \c autoRepeat turned on.
+
+ \sa pressed(), released(), toggled() autoRepeat down
+*/
+
+/*!
+ \fn void TQButton::toggled( bool on )
+
+ This signal is emitted whenever a toggle button changes status. \a
+ on is TRUE if the button is on, or FALSE if the button is off.
+
+ This may be the result of a user action, toggle() slot activation,
+ or because setOn() was called.
+
+ \sa clicked()
+*/
+
+/*!
+ \fn void TQButton::stateChanged( int state )
+
+ This signal is emitted whenever a toggle button changes state. \a
+ state is \c On if the button is on, \c NoChange if it is in the
+ \link TQCheckBox::setTristate() "no change" state\endlink or \c Off
+ if the button is off.
+
+ This may be the result of a user action, toggle() slot activation,
+ setState(), or because setOn() was called.
+
+ \sa clicked() TQButton::ToggleState
+*/
+
+void TQButton::setText( const TQString &text )
+{
+ if ( btext == text )
+ return;
+ btext = text;
+#ifndef QT_NO_ACCEL
+ setAccel( TQAccel::shortcutKey( text ) );
+#endif
+
+ if ( bpixmap ) {
+ delete bpixmap;
+ bpixmap = 0;
+ }
+
+ if ( autoresize )
+ adjustSize();
+
+ update();
+ updateGeometry();
+
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::NameChanged );
+#endif
+}
+
+void TQButton::setPixmap( const TQPixmap &pixmap )
+{
+ if ( bpixmap && bpixmap->serialNumber() == pixmap.serialNumber() )
+ return;
+
+ bool newSize;
+ if ( bpixmap ) {
+ newSize = pixmap.width() != bpixmap->width() ||
+ pixmap.height() != bpixmap->height();
+ *bpixmap = pixmap;
+ } else {
+ newSize = TRUE;
+ bpixmap = new TQPixmap( pixmap );
+ Q_CHECK_PTR( bpixmap );
+ }
+ if ( bpixmap->depth() == 1 && !bpixmap->mask() )
+ bpixmap->setMask( *((TQBitmap *)bpixmap) );
+ if ( !btext.isNull() ) {
+ btext = TQString::null;
+#ifndef QT_NO_ACCEL
+ setAccel( TQKeySequence() );
+#endif
+ }
+ if ( autoresize && newSize )
+ adjustSize();
+ if ( autoMask() )
+ updateMask();
+ update();
+ if ( newSize )
+ updateGeometry();
+}
+
+
+#ifndef QT_NO_ACCEL
+TQKeySequence TQButton::accel() const
+{
+ if ( d && d->a )
+ return d->a->key( 0 );
+ return TQKeySequence();
+}
+
+void TQButton::setAccel( const TQKeySequence& key )
+{
+ if ( d && d->a )
+ d->a->clear();
+ if ( key.isEmpty() )
+ return;
+ ensureData();
+ if ( !d->a ) {
+ d->a = new TQAccel( this, "buttonAccel" );
+ connect( d->a, SIGNAL( activated(int) ), this, SLOT( animateClick() ) );
+ connect( d->a, SIGNAL( activatedAmbiguously(int) ), this, SLOT( setFocus() ) );
+ }
+ d->a->insertItem( key, 0 );
+}
+#endif
+
+#ifndef QT_NO_COMPAT
+
+void TQButton::setAutoResize( bool enable )
+{
+ if ( (bool)autoresize != enable ) {
+ autoresize = enable;
+ if ( autoresize )
+ adjustSize(); // calls resize which repaints
+ }
+}
+
+#endif
+
+void TQButton::setAutoRepeat( bool enable )
+{
+ repeat = (uint)enable;
+ if ( repeat && mlbDown )
+ timer()->start( AUTO_REPEAT_DELAY, TRUE );
+}
+
+/*!
+ Performs an animated click: the button is pressed and released a
+ short while later.
+
+ The pressed(), released(), clicked(), toggled(), and
+ stateChanged() signals are emitted as appropriate.
+
+ This function does nothing if the button is \link setEnabled()
+ disabled. \endlink
+
+ \sa setAccel()
+*/
+
+void TQButton::animateClick()
+{
+ if ( !isEnabled() || animation )
+ return;
+ animation = TRUE;
+ buttonDown = TRUE;
+ repaint( FALSE );
+ emit pressed();
+ TQTimer::singleShot( 100, this, SLOT(animateTimeout()) );
+}
+
+void TQButton::emulateClick()
+{
+ if ( !isEnabled() || animation )
+ return;
+ animation = TRUE;
+ buttonDown = TRUE;
+ emit pressed();
+ animateTimeout();
+}
+
+void TQButton::setDown( bool enable )
+{
+ if ( d )
+ timer()->stop();
+ mlbDown = FALSE; // the safe setting
+ if ( (bool)buttonDown != enable ) {
+ buttonDown = enable;
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ }
+}
+
+/*!
+ Sets the toggle state of the button to \a s. \a s can be \c Off, \c
+ NoChange or \c On.
+*/
+
+void TQButton::setState( ToggleState s )
+{
+ if ( !toggleTyp ) {
+#if defined(QT_CHECK_STATE)
+ qWarning( "TQButton::setState() / setOn: (%s) Only toggle buttons "
+ "may be switched", name( "unnamed" ) );
+#endif
+ return;
+ }
+
+ if ( (ToggleState)stat != s ) { // changed state
+ bool was = stat != Off;
+ stat = s;
+ if ( autoMask() )
+ updateMask();
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ // ### toggled for tristate makes no sense. Don't emit the signal in 4.0
+ if ( was != (stat != Off) )
+ emit toggled( stat != Off );
+ emit stateChanged( s );
+ }
+}
+
+
+/*!
+ Returns TRUE if \a pos is inside the clickable button rectangle;
+ otherwise returns FALSE.
+
+ By default, the clickable area is the entire widget. Subclasses
+ may reimplement it, though.
+*/
+bool TQButton::hitButton( const TQPoint &pos ) const
+{
+ return rect().contains( pos );
+}
+
+/*!
+ Draws the button. The default implementation does nothing.
+
+ This virtual function is reimplemented by subclasses to draw real
+ buttons. At some point, these reimplementations should call
+ drawButtonLabel().
+
+ \sa drawButtonLabel(), paintEvent()
+*/
+#if (QT_VERSION-0 >= 0x040000)
+#error "TQButton. Make pure virtual"
+#endif
+void TQButton::drawButton( TQPainter * )
+{
+ return;
+}
+
+/*!
+ Draws the button text or pixmap.
+
+ This virtual function is reimplemented by subclasses to draw real
+ buttons. It is invoked by drawButton().
+
+ \sa drawButton(), paintEvent()
+*/
+
+void TQButton::drawButtonLabel( TQPainter * )
+{
+ return;
+}
+
+/*! \reimp */
+void TQButton::keyPressEvent( TQKeyEvent *e )
+{
+ switch ( e->key() ) {
+ case Key_Enter:
+ case Key_Return:
+ {
+#ifndef QT_NO_PUSHBUTTON
+ TQPushButton *pb = (TQPushButton*)qt_cast( "TQPushButton" );
+ if ( pb && ( pb->autoDefault() || pb->isDefault() ) )
+ emit clicked();
+ else
+#endif
+ e->ignore();
+ }
+ break;
+ case Key_Space:
+ if ( !e->isAutoRepeat() ) {
+ setDown( TRUE );
+#ifndef QT_NO_PUSHBUTTON
+ if ( ::qt_cast<TQPushButton*>(this) )
+ emit pressed();
+ else
+#endif
+ e->ignore();
+ }
+ break;
+ case Key_Up:
+ case Key_Left:
+#ifndef QT_NO_BUTTONGROUP
+ if ( group() ) {
+ group()->moveFocus( e->key() );
+ } else
+#endif
+ {
+ TQFocusEvent::setReason(TQFocusEvent::Backtab);
+ focusNextPrevChild( FALSE );
+ TQFocusEvent::resetReason();
+ }
+ break;
+ case Key_Right:
+ case Key_Down:
+#ifndef QT_NO_BUTTONGROUP
+ if ( group() ) {
+ group()->moveFocus( e->key() );
+ } else
+#endif
+ {
+ TQFocusEvent::setReason(TQFocusEvent::Tab);
+ focusNextPrevChild( TRUE );
+ TQFocusEvent::resetReason();
+ }
+ break;
+ case Key_Escape:
+ if ( buttonDown ) {
+ buttonDown = FALSE;
+ update();
+ break;
+ }
+ // fall through
+ default:
+ e->ignore();
+ }
+}
+
+/*! \reimp */
+void TQButton::keyReleaseEvent( TQKeyEvent * e)
+{
+ switch ( e->key() ) {
+ case Key_Space:
+ if ( buttonDown && !e->isAutoRepeat() ) {
+ buttonDown = FALSE;
+ nextState();
+ emit released();
+ emit clicked();
+ }
+ break;
+ default:
+ e->ignore();
+ }
+}
+
+/*! \reimp */
+void TQButton::mousePressEvent( TQMouseEvent *e )
+{
+ if ( e->button() != LeftButton ) {
+ e->ignore();
+ return;
+ }
+ bool hit = hitButton( e->pos() );
+ if ( hit ) { // mouse press on button
+ mlbDown = TRUE; // left mouse button down
+ buttonDown = TRUE;
+ if ( autoMask() )
+ updateMask();
+
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ TQGuardedPtr<TQTimer> t = timer();
+ emit pressed();
+ if ( t && repeat )
+ t->start( AUTO_REPEAT_DELAY, TRUE );
+ }
+}
+
+/*! \reimp */
+void TQButton::mouseReleaseEvent( TQMouseEvent *e)
+{
+ if ( e->button() != LeftButton ) {
+
+ // clean up apperance if left button has been pressed
+ if (mlbDown || buttonDown) {
+ mlbDown = FALSE;
+ buttonDown = FALSE;
+
+ if ( autoMask() )
+ updateMask();
+ repaint( FALSE );
+ }
+
+ e->ignore();
+ return;
+ }
+ if ( !mlbDown )
+ return;
+ if ( d )
+ timer()->stop();
+
+ const bool oldButtonDown = buttonDown;
+ mlbDown = FALSE; // left mouse button up
+ buttonDown = FALSE;
+ if ( hitButton( e->pos() ) ) { // mouse release on button
+ nextState();
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ emit released();
+ emit clicked();
+ } else {
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ if (oldButtonDown)
+ emit released();
+ }
+}
+
+/*! \reimp */
+void TQButton::mouseMoveEvent( TQMouseEvent *e )
+{
+ if ( !((e->state() & LeftButton) && mlbDown) ) {
+ e->ignore();
+ return; // left mouse button is up
+ }
+ if ( hitButton(e->pos()) ) { // mouse move in button
+ if ( !buttonDown ) {
+ buttonDown = TRUE;
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ emit pressed();
+ }
+ } else { // mouse move outside button
+ if ( buttonDown ) {
+ buttonDown = FALSE;
+ repaint( FALSE );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ emit released();
+ }
+ }
+}
+
+
+/*!
+ Handles paint events for buttons. Small and typically complex
+ buttons are painted double-buffered to reduce flicker. The
+ actually drawing is done in the virtual functions drawButton() and
+ drawButtonLabel().
+
+ \sa drawButton(), drawButtonLabel()
+*/
+void TQButton::paintEvent( TQPaintEvent *)
+{
+ TQSharedDoubleBuffer buffer( this );
+ drawButton( buffer.painter() );
+}
+
+/*! \reimp */
+void TQButton::focusInEvent( TQFocusEvent * e)
+{
+ TQWidget::focusInEvent( e );
+}
+
+/*! \reimp */
+void TQButton::focusOutEvent( TQFocusEvent * e )
+{
+ buttonDown = FALSE;
+ TQWidget::focusOutEvent( e );
+}
+
+/*!
+ Internal slot used for auto repeat.
+*/
+void TQButton::autoRepeatTimeout()
+{
+ if ( mlbDown && isEnabled() && autoRepeat() ) {
+ TQGuardedPtr<TQTimer> t = timer();
+ if ( buttonDown ) {
+ emit released();
+ emit clicked();
+ emit pressed();
+ }
+ if ( t )
+ t->start( AUTO_REPEAT_PERIOD, TRUE );
+ }
+}
+
+/*!
+ Internal slot used for the second stage of animateClick().
+*/
+void TQButton::animateTimeout()
+{
+ if ( !animation )
+ return;
+ animation = FALSE;
+ buttonDown = FALSE;
+ nextState();
+ emit released();
+ emit clicked();
+}
+
+
+void TQButton::nextState()
+{
+ bool t = isToggleButton() && !( isOn() && isExclusiveToggle() );
+ bool was = stat != Off;
+ if ( t ) {
+ if ( toggleTyp == Tristate )
+ stat = ( stat + 1 ) % 3;
+ else
+ stat = stat ? Off : On;
+ }
+ if ( autoMask() )
+ updateMask();
+ repaint( FALSE );
+ if ( t ) {
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+ if ( was != (stat != Off) )
+ emit toggled( stat != Off );
+ emit stateChanged( stat );
+ }
+}
+
+/*! \reimp */
+void TQButton::enabledChange( bool e )
+{
+ if ( !isEnabled() )
+ setDown( FALSE );
+ TQWidget::enabledChange( e );
+}
+
+
+/*!
+ Toggles the state of a toggle button.
+
+ \sa isOn(), setOn(), toggled(), isToggleButton()
+*/
+void TQButton::toggle()
+{
+ if ( isToggleButton() )
+ setOn( !isOn() );
+}
+
+/*!
+ Sets the toggle type of the button to \a type.
+
+ \a type can be set to \c SingleShot, \c Toggle and \c Tristate.
+*/
+void TQButton::setToggleType( ToggleType type )
+{
+ toggleTyp = type;
+ if ( type != Tristate && stat == NoChange )
+ setState( On );
+#if defined(QT_ACCESSIBILITY_SUPPORT)
+ else
+ TQAccessible::updateAccessibility( this, 0, TQAccessible::StateChanged );
+#endif
+}
+
+bool TQButton::isExclusiveToggle() const
+{
+#ifndef QT_NO_BUTTONGROUP
+ return group() && ( group()->isExclusive() ||
+ group()->isRadioButtonExclusive() &&
+ ::qt_cast<TQRadioButton*>(this) );
+#else
+ return FALSE;
+#endif
+}
+
+#endif