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/* This file is part of the KDE libraries
Copyright (C) 1998 Kurt Granroth (granroth@kde.org)
2000 Carsten Pfeiffer <pfeiffer@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/*
* $Id$
*
*/
#ifndef _KCURSOR_H
#define _KCURSOR_H
#include <tqcursor.h>
#include <kdelibs_export.h>
class TQWidget;
/**
* @short A TQCursor wrapper allowing "themed" cursors and auto-hiding cursors.
*
* A wrapper around TQCursor that allows for "themed" cursors.
*
* Currently, the only themed cursor is a hand tqshaped cursor.
*
* A typical usage would be
* \code
* setCursor(KCursor::handCursor());
* \endcode
*
* @author Kurt Granroth <granroth@kde.org>
*/
class KDEUI_EXPORT KCursor : public TQt
{
public:
/**
* Constructor.
*
* Does not do anything so far.
**/
KCursor();
/**
* Returns the proper hand cursor according to
* the current GUI style (static function).
*/
static TQCursor handCursor();
/**
* Returns the proper arrow+hourglass cursor according to
* the current GUI style (static function).
*/
static TQCursor workingCursor();
/**
* Returns the proper arrow cursor according to
* the current GUI style (static function).
*/
static TQCursor arrowCursor();
/**
* Returns the proper up arrow cursor according to
* the current GUI style (static function).
*/
static TQCursor upArrowCursor();
/**
* Returns the proper cross-hair cursor according to
* the current GUI style (static function).
*/
static TQCursor crossCursor();
/**
* Returns the proper hourglass cursor according to
* the current GUI style (static function).
*/
static TQCursor waitCursor();
/**
* Returns the proper text cursor according to
* the current GUI style (static function).
*/
static TQCursor ibeamCursor();
/**
* Returns the proper vertical resize cursor
* according to the current GUI style (static function).
*/
static TQCursor sizeVerCursor();
/**
* Returns the proper horizontal resize cursor
* according to the current GUI style (static function).
*/
static TQCursor sizeHorCursor();
/**
* Returns the proper diagonal resize (/) cursor
* according to the current GUI style (static function).
*/
static TQCursor sizeBDiagCursor();
/**
* Returns the proper diagonal resize (\) cursor
* according to the current GUI style (static function).
*/
static TQCursor sizeFDiagCursor();
/**
* Returns the proper all-directions resize cursor
* according to the current GUI style (static function).
*/
static TQCursor sizeAllCursor();
/**
* Returns a blank or invisible cursor (static function).
*/
static TQCursor blankCursor();
/**
* Returns a WhatsThis cursor (static function).
*/
static TQCursor whatsThisCursor();
/**
* Sets auto-hiding the cursor for widget @p w. Enabling it will result in
* the cursor being hidden when
* @li a key-event happens
* @li there are no key-events for a configured time-frame (see
* setHideCursorDelay())
*
* The cursor will be shown again when the focus is lost or a mouse-event
* happens.
*
* Side effect: when enabling auto-hide, mouseTracking is enabled for the
* specified widget, because it's needed to get mouse-move-events. So
* don't disable mouseTracking for a widget while using auto-hide for it.
*
* When disabling auto-hide, mouseTracking will be disabled, so if you need
* mouseTracking after disabling auto-hide, you have to reenable
* mouseTracking.
*
* If you want to use auto-hiding for widgets that don't take focus, e.g.
* a TQCanvasView, then you have to pass all key-events that should trigger
* auto-hiding to autoHideEventFilter().
*/
static void setAutoHideCursor( TQWidget *w, bool enable );
/**
* Overloaded method for the case where you have an event-filter installed
* on the widget you want to enable auto-cursor-hiding.
*
* In this case set @p customEventFilter to true and call
* autoHideEventFilter() from the beginning of your eventFilter().
*
* @see autoHideEventFilter
*/
static void setAutoHideCursor( TQWidget *w, bool enable,
bool customEventFilter );
/**
* Sets the delay time in milliseconds for auto-hiding. When no keyboard
* events arrive for that time-frame, the cursor will be hidden.
*
* Default is 5000, i.e. 5 seconds.
*/
static void setHideCursorDelay( int ms );
/**
* @returns the current auto-hide delay time.
*
* Default is 5000, i.e. 5 seconds.
*/
static int hideCursorDelay();
/**
* KCursor has to install an eventFilter over the widget you want to
* auto-hide. If you have an own eventFilter() on that widget and stop
* some events by returning true, you might break auto-hiding, because
* KCursor doesn't get those events.
*
* In this case, you need to call setAutoHideCursor( widget, true, true );
* to tell KCursor not to install an eventFilter. Then you call this method
* from the beginning of your eventFilter, for example:
* \code
* edit = new KEdit( this, "some edit widget" );
* edit->installEventFilter( this );
* KCursor::setAutoHideCursor( edit, true, true );
*
* [...]
*
* bool YourClass::eventFilter( TQObject *o, TQEvent *e )
* {
* if ( o == edit ) // only that widget where you enabled auto-hide!
* KCursor::autoHideEventFilter( o, e );
*
* // now you can do your own event-processing
* [...]
* }
* \endcode
*
* Note that you must not call KCursor::autoHideEventFilter() when you
* didn't enable or after disabling auto-hiding.
*/
static void autoHideEventFilter( TQObject *, TQEvent * );
private:
static TQCursor *s_handCursor;
};
#endif // _KCURSOR_H
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