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tdelibs/tdeui/kiconview.h

282 lines
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/* This file is part of the KDE libraries
Copyright (C) 1999 Torben Weis <weis@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.
*/
#ifndef KICONVIEW_H
#define KICONVIEW_H
#include <tqcursor.h>
#include <tqiconview.h>
#include <tdelibs_export.h>
/**
* @short A variant of TQIconView that honors KDE's system-wide settings.
*
* This Widget extends the functionality of TQIconView to honor the system
* wide settings for Single Click/Double Click mode, Auto Selection and
* Change Cursor over Link.
*
* There is a new signal executed(). It gets connected to either
* TQIconView::clicked() or TQIconView::doubleClicked() depending on the KDE
* wide Single Click/Double Click settings. It is strongly recommended that
* you use this signal instead of the above mentioned. This way you don<6F>t
* need to care about the current settings.
* If you want to get informed when the user selects something connect to the
* TQIconView::selectionChanged() signal.
*
**/
class TDEUI_EXPORT TDEIconView : public TQIconView
{
friend class TDEIconViewItem;
Q_OBJECT
TQ_ENUMS( Mode )
TQ_PROPERTY( Mode mode READ mode WRITE setMode )
public:
TDEIconView( TQWidget *parent = 0, const char *name = 0, WFlags f = 0 );
~TDEIconView();
/**
* TDEIconView has two different operating modes. Execute mode is depending
* on the configuration of single-click or double-click where the signal
* executed() will be emitted upon click/double-click.
* In Select mode, this signal will not be emitted.
*
* Default is Execute mode.
*/
enum Mode { Execute, Select };
/**
* Sets the mode to Execute or Select.
* @li In Execute mode, the signal executed()
* will be emitted when the user clicks/double-clicks an item.
* @li Select mode is
* the normal TQIconView mode.
*
* Default is Execute.
*/
void setMode( Mode m );
/**
* @returns the current Mode, either Execute or Select.
*/
Mode mode() const;
/**
* Reimplemented for internal purposes
*/
virtual void setFont( const TQFont & );
/**
* Set the maximum number of lines that will be used to display icon text.
* Setting this value will enable word-wrap, too.
* @since 3.3
*
* @param n Number of lines
*/
void setIconTextHeight( int n );
/**
* @return The height of icon text in lines
* @since 3.3
*/
int iconTextHeight() const;
/**
* Reimplemented for held() signal behavior internal purposes
*/
virtual void takeItem( TQIconViewItem * item );
signals:
/**
* This signal is emitted whenever the user executes an iconview item.
* That means depending on the KDE wide Single Click/Double Click
* setting the user clicked or double clicked on that item.
* @param item is the pointer to the executed iconview item.
*
* Note that you may not delete any TQIconViewItem objects in slots
* connected to this signal.
*/
void executed( TQIconViewItem *item );
/**
* This signal is emitted whenever the user executes an iconview item.
* That means depending on the KDE wide Single Click/Double Click
* setting the user clicked or double clicked on that item.
* @param item is the pointer to the executed iconview item.
* @param pos is the position where the user has clicked
*
* Note that you may not delete any TQIconViewItem objects in slots
* connected to this signal.
*/
void executed( TQIconViewItem *item, const TQPoint &pos );
/**
* This signal is emitted whenever the user hold something on an iconview
* during a drag'n'drop.
* @param item is the pointer to the iconview item the hold event occur.
*
* Note that you may not delete any TQIconViewItem objects in slots
* connected to this signal.
*/
void held( TQIconViewItem *item );
/**
* This signal gets emitted whenever the user double clicks into the
* iconview.
* @param item is the pointer to the clicked iconview item.
* @param pos is the position where the user has clicked, and
*
* Note that you may not delete any TQIconViewItem objects in slots
* connected to this signal.
*
* This signal is more or less here for the sake of completeness.
* You should normally not need to use this. In most cases it's better
* to use executed() instead.
*/
void doubleClicked( TQIconViewItem *item, const TQPoint &pos );
protected slots:
void slotOnItem( TQIconViewItem *item );
void slotOnViewport();
void slotSettingsChanged(int);
/**
* Auto selection happend.
*/
void slotAutoSelect();
protected:
void emitExecute( TQIconViewItem *item, const TQPoint &pos );
void updateDragHoldItem( TQDropEvent *e );
virtual void focusOutEvent( TQFocusEvent *fe );
virtual void leaveEvent( TQEvent *e );
virtual void contentsMousePressEvent( TQMouseEvent *e );
virtual void contentsMouseDoubleClickEvent ( TQMouseEvent * e );
virtual void contentsMouseReleaseEvent( TQMouseEvent *e );
virtual void contentsDragEnterEvent( TQDragEnterEvent *e );
virtual void contentsDragLeaveEvent( TQDragLeaveEvent *e );
virtual void contentsDragMoveEvent( TQDragMoveEvent *e );
virtual void contentsDropEvent( TQDropEvent* e );
virtual void wheelEvent( TQWheelEvent *e );
/**
* This method allows to handle correctly cases where a subclass
* needs the held() signal to not be triggered without calling
* a TDEIconView::contentsDrag*Event() method (which have side effects
* because they forward to TQIconView).
*/
void cancelPendingHeldSignal();
private slots:
void slotMouseButtonClicked( int btn, TQIconViewItem *item, const TQPoint &pos );
void slotDragHoldTimeout();
private:
/**
* @internal. For use by TDEIconViewItem.
*/
TQFontMetrics *itemFontMetrics() const;
/**
* @internal. For use by TDEIconViewItem.
*/
TQPixmap selectedIconPixmap( TQPixmap *pix, const TQColor &col ) const;
bool m_bUseSingle;
bool m_bChangeCursorOverItem;
TQIconViewItem* m_pCurrentItem;
TQTimer* m_pAutoSelect;
int m_autoSelectDelay;
protected:
virtual void virtual_hook( int id, void* data );
private:
class TDEIconViewPrivate;
TDEIconViewPrivate *d;
};
class KWordWrap;
/**
* @short A variant of TQIconViewItem that wraps words better.
*
* TDEIconViewItem exists to improve the word-wrap functionality of QIconViewItem
* Use TDEIconViewItem instead of TQIconViewItem for any iconview item you might have :)
*
* @author David Faure <david@mandrakesoft.com>
*/
class TDEUI_EXPORT TDEIconViewItem : public TQIconViewItem
{
public:
// Need to redefine all the constructors - I want Java !
TDEIconViewItem( TQIconView *parent )
: TQIconViewItem( parent ) { init(); } // We need to call it because the parent ctor won't call our reimplementation :(((
TDEIconViewItem( TQIconView *parent, TQIconViewItem *after )
: TQIconViewItem( parent, after ) { init(); }
TDEIconViewItem( TQIconView *parent, const TQString &text )
: TQIconViewItem( parent, text ) { init(); }
TDEIconViewItem( TQIconView *parent, TQIconViewItem *after, const TQString &text )
: TQIconViewItem( parent, after, text ) { init(); }
TDEIconViewItem( TQIconView *parent, const TQString &text, const TQPixmap &icon )
: TQIconViewItem( parent, text, icon ) { init(); }
TDEIconViewItem( TQIconView *parent, TQIconViewItem *after, const TQString &text, const TQPixmap &icon )
: TQIconViewItem( parent, after, text, icon ) { init(); }
TDEIconViewItem( TQIconView *parent, const TQString &text, const TQPicture &picture )
: TQIconViewItem( parent, text, picture ) { init(); }
TDEIconViewItem( TQIconView *parent, TQIconViewItem *after, const TQString &text, const TQPicture &picture )
: TQIconViewItem( parent, after, text, picture ) { init(); }
virtual ~TDEIconViewItem();
/**
* Using this function, you can specify a custom size for the pixmap. The
* geometry of the item will be calculated to let a pixmap of the given size
* fit in the iconView without needing an update.
* This may be useful if you want to change the pixmap later without breaking
* the layout. A possible use of this function is to replace a fileItem icon
* by a larger pixmap (preview).
* @since 3.3
*
* @param size The size to use
*/
void setPixmapSize( const TQSize& size );
/**
* @return The size set by setPixmapSize() or TQSize( 0, 0 )
* @since 3.3
*/
TQSize pixmapSize() const;
protected:
void init();
virtual void calcRect( const TQString& text_ = TQString::null );
virtual void paintItem( TQPainter *p, const TQColorGroup &c );
KWordWrap *wordWrap();
void paintPixmap( TQPainter *p, const TQColorGroup &c );
void paintText( TQPainter *p, const TQColorGroup &c );
private:
KWordWrap* m_wordWrap;
struct TDEIconViewItemPrivate;
TDEIconViewItemPrivate *d;
};
#endif