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# kcolorbutton.cpp

    00001 /*  This file is part of the KDE libraries
    00002     Copyright (C) 1997 Martin Jones (mjones@kde.org)
    00003     Copyright (C) 1999 Cristian Tibirna (ctibirna@kde.org)
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public License
    00016     along with this library; see the file COPYING.LIB.  If not, write to
    00017     the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00018     Boston, MA 02111-1307, USA.
    00019 */
    00020
    00021 #include <config.h>
    00022
    00023 #include <qpainter.h>
    00024 #include <qdrawutil.h>
    00025 #include <qapplication.h>
    00026 #include <qclipboard.h>
    00027 #include <qstyle.h>
    00028 #include <kglobalsettings.h>
    00029 #include <kstdaccel.h>
    00030 #include "kcolordialog.h"
    00031 #include "kcolorbutton.h"
    00032 #include "kcolordrag.h"
    00033
    00034 class KColorButton::KColorButtonPrivate
    00035 {
    00036 public:
    00037     bool m_bdefaultColor;
    00038     QColor m_defaultColor;
    00039 };
    00040
    00041 KColorButton::KColorButton( QWidget *parent, const char *name )
    00042   : QPushButton( parent, name )
    00043 {
    00044   d = new KColorButtonPrivate;
    00045   d->m_bdefaultColor = false;
    00046   d->m_defaultColor = QColor();
    00047   setAcceptDrops( true);
    00048
    00049   // 2000-10-15 (putzer): fixes broken keyboard usage
    00050   connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
    00051 }
    00052
    00053 KColorButton::KColorButton( const QColor &c, QWidget *parent,
    00054                 const char *name )
    00055   : QPushButton( parent, name ), col(c)
    00056 {
    00057   d = new KColorButtonPrivate;
    00058   d->m_bdefaultColor = false;
    00059   d->m_defaultColor = QColor();
    00060   setAcceptDrops( true);
    00061
    00062   // 2000-10-15 (putzer): fixes broken keyboard usage
    00063   connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
    00064 }
    00065
    00066 KColorButton::KColorButton( const QColor &c, const QColor &defaultColor, QWidget *parent,
    00067                 const char *name )
    00068   : QPushButton( parent, name ), col(c)
    00069 {
    00070   d = new KColorButtonPrivate;
    00071   d->m_bdefaultColor = true;
    00072   d->m_defaultColor = defaultColor;
    00073   setAcceptDrops( true);
    00074
    00075   // 2000-10-15 (putzer): fixes broken keyboard usage
    00076   connect (this, SIGNAL(clicked()), this, SLOT(chooseColor()));
    00077 }
    00078
    00079 KColorButton::~KColorButton()
    00080 {
    00081   delete d;
    00082 }
    00083
    00084 void KColorButton::setColor( const QColor &c )
    00085 {
    00086   if ( col != c ) {
    00087     col = c;
    00088     repaint( false );
    00089     emit changed( col );
    00090   }
    00091 }
    00092
    00093 QColor KColorButton::defaultColor() const
    00094 {
    00095   return d->m_defaultColor;
    00096 }
    00097
    00098 void KColorButton::setDefaultColor( const QColor &c )
    00099 {
    00100   d->m_bdefaultColor = c.isValid();
    00101   d->m_defaultColor = c;
    00102 }
    00103
    00104
    00105 void KColorButton::drawButtonLabel( QPainter *painter )
    00106 {
    00107   int x, y, w, h;
    00108   QRect r = style().subRect( QStyle::SR_PushButtonContents, this );
    00109   r.rect(&x, &y, &w, &h);
    00110
    00111   int margin = style().pixelMetric( QStyle::PM_ButtonMargin, this );
    00112   x += margin;
    00113   y += margin;
    00114   w -= 2*margin;
    00115   h -= 2*margin;
    00116
    00117   if (isOn() || isDown()) {
    00118     x += style().pixelMetric( QStyle::PM_ButtonShiftHorizontal, this );
    00119     y += style().pixelMetric( QStyle::PM_ButtonShiftVertical, this );
    00120   }
    00121
    00122   QColor fillCol = isEnabled() ? col : backgroundColor();
    00123   qDrawShadePanel( painter, x, y, w, h, colorGroup(), true, 1, NULL);
    00124   if ( fillCol.isValid() )
    00125     painter->fillRect( x+1, y+1, w-2, h-2, fillCol );
    00126
    00127   if ( hasFocus() ) {
    00128     QRect focusRect = style().subRect( QStyle::SR_PushButtonFocusRect, this );
    00129     style().drawPrimitive( QStyle::PE_FocusRect, painter, focusRect, colorGroup() );
    00130   }
    00131 }
    00132
    00133 QSize KColorButton::sizeHint() const
    00134 {
    00135   return style().sizeFromContents(QStyle::CT_PushButton, this, QSize(40, 15)).
    00136         expandedTo(QApplication::globalStrut());
    00137 }
    00138
    00139 void KColorButton::dragEnterEvent( QDragEnterEvent *event)
    00140 {
    00141   event->accept( KColorDrag::canDecode( event) && isEnabled());
    00142 }
    00143
    00144 void KColorButton::dropEvent( QDropEvent *event)
    00145 {
    00146   QColor c;
    00147   if( KColorDrag::decode( event, c)) {
    00148     setColor(c);
    00149   }
    00150 }
    00151
    00152 void KColorButton::keyPressEvent( QKeyEvent *e )
    00153 {
    00154   KKey key( e );
    00155
    00156   if ( KStdAccel::copy().contains( key ) ) {
    00157     QMimeSource* mime = new KColorDrag( color() );
    00158     QApplication::clipboard()->setData( mime, QClipboard::Clipboard );
    00159   }
    00160   else if ( KStdAccel::paste().contains( key ) ) {
    00161     QColor color;
    00162     KColorDrag::decode( QApplication::clipboard()->data( QClipboard::Clipboard ), color );
    00163     setColor( color );
    00164   }
    00165   else
    00166     QPushButton::keyPressEvent( e );
    00167 }
    00168
    00169 void KColorButton::mousePressEvent( QMouseEvent *e)
    00170 {
    00171   mPos = e->pos();
    00172   QPushButton::mousePressEvent(e);
    00173 }
    00174
    00175 void KColorButton::mouseMoveEvent( QMouseEvent *e)
    00176 {
    00177   if( (e->state() & LeftButton) &&
    00178     (e->pos()-mPos).manhattanLength() > KGlobalSettings::dndEventDelay() )
    00179   {
    00180     // Drag color object
    00181     KColorDrag *dg = new KColorDrag( color(), this);
    00182     dg->dragCopy();
    00183     setDown(false);
    00184   }
    00185 }
    00186
    00187 void KColorButton::chooseColor()
    00188 {
    00189   QColor c = color();
    00190   if ( d->m_bdefaultColor )
    00191   {
    00192       if( KColorDialog::getColor( c, d->m_defaultColor, this ) != QDialog::Rejected ) {
    00193           setColor( c );
    00194       }
    00195   }
    00196   else
    00197   {
    00198       if( KColorDialog::getColor( c, this ) != QDialog::Rejected ) {
    00199           setColor( c );
    00200       }
    00201   }
    00202 }
    00203
    00204 void KColorButton::virtual_hook( int, void* )
    00205 { /*BASE::virtual_hook( id, data );*/ }
    00206
    00207 #include "kcolorbutton.moc"

This file is part of the documentation for kdeui Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
Generated on Sat Jun 11 20:20:14 2005 by doxygen 1.4.1 written by Dimitri van Heesch, © 1997-2003