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kcolorcombo.cpp

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00001 /* This file is part of the KDE libraries
00002     Copyright (C) 1997 Martin Jones (mjones@kde.org)
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to
00016     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017     Boston, MA 02110-1301, USA.
00018 */
00019 //-----------------------------------------------------------------------------
00020 // KDE color selection dialog.
00021 //
00022 // 1999-09-27 Espen Sand <espensa@online.no>
00023 // KColorDialog is now subclassed from KDialogBase. I have also extended
00024 // KColorDialog::getColor() so that in contains a parent argument. This
00025 // improves centering capability.
00026 //
00027 // layout management added Oct 1997 by Mario Weilguni
00028 // <mweilguni@sime.com>
00029 //
00030 
00031 
00032 #include <stdio.h>
00033 #include <stdlib.h>
00034 
00035 #include <qdrawutil.h>
00036 #include <qevent.h>
00037 #include <qfile.h>
00038 #include <qimage.h>
00039 #include <qlabel.h>
00040 #include <qlayout.h>
00041 #include <qlineedit.h>
00042 #include <qvalidator.h>
00043 #include <qpainter.h>
00044 #include <qpushbutton.h>
00045 #include <qtimer.h>
00046 
00047 #include <kapplication.h>
00048 #include <kconfig.h>
00049 #include <kglobal.h>
00050 #include <kglobalsettings.h>
00051 #include <kiconloader.h>
00052 #include <klistbox.h>
00053 #include <klocale.h>
00054 #include <kmessagebox.h>
00055 #include <kseparator.h>
00056 #include <kpalette.h>
00057 #include <kimageeffect.h>
00058 
00059 //#include "kcolordialog.h"
00060 //#include "kcolordrag.h"
00061 #include "kcolorcombo.h"
00062 
00063 // This is repeated from the KColorDlg, but I didn't
00064 // want to make it public BL.
00065 // We define it out when compiling with --enable-final in which case
00066 // we use the version defined in KColorDlg
00067 
00068 #ifndef KDE_USE_FINAL
00069 #define STANDARD_PAL_SIZE 17
00070 
00071 static QColor *standardPalette = 0;
00072 
00073 static void createStandardPalette()
00074 {
00075     if ( standardPalette )
00076     return;
00077 
00078     standardPalette = new QColor [STANDARD_PAL_SIZE];
00079 
00080     int i = 0;
00081 
00082     standardPalette[i++] = Qt::red;
00083     standardPalette[i++] = Qt::green;
00084     standardPalette[i++] = Qt::blue;
00085     standardPalette[i++] = Qt::cyan;
00086     standardPalette[i++] = Qt::magenta;
00087     standardPalette[i++] = Qt::yellow;
00088     standardPalette[i++] = Qt::darkRed;
00089     standardPalette[i++] = Qt::darkGreen;
00090     standardPalette[i++] = Qt::darkBlue;
00091     standardPalette[i++] = Qt::darkCyan;
00092     standardPalette[i++] = Qt::darkMagenta;
00093     standardPalette[i++] = Qt::darkYellow;
00094     standardPalette[i++] = Qt::white;
00095     standardPalette[i++] = Qt::lightGray;
00096     standardPalette[i++] = Qt::gray;
00097     standardPalette[i++] = Qt::darkGray;
00098     standardPalette[i++] = Qt::black;
00099 }
00100 #endif
00101 
00102 class KColorCombo::KColorComboPrivate
00103 {
00104     protected:
00105     friend class KColorCombo;
00106     KColorComboPrivate(){}
00107     ~KColorComboPrivate(){}
00108     bool showEmptyList;
00109 };
00110 
00111 KColorCombo::KColorCombo( QWidget *parent, const char *name )
00112     : QComboBox( parent, name )
00113 {
00114     d=new KColorComboPrivate();
00115     d->showEmptyList=false;
00116 
00117     customColor.setRgb( 255, 255, 255 );
00118     internalcolor.setRgb( 255, 255, 255 );
00119 
00120     createStandardPalette();
00121 
00122     addColors();
00123 
00124     connect( this, SIGNAL( activated(int) ), SLOT( slotActivated(int) ) );
00125     connect( this, SIGNAL( highlighted(int) ), SLOT( slotHighlighted(int) ) );
00126 }
00127 
00128 
00129 KColorCombo::~KColorCombo()
00130 {
00131     delete d;
00132 }
00136 void KColorCombo::setColor( const QColor &col )
00137 {
00138     internalcolor = col;
00139     d->showEmptyList=false;
00140     addColors();
00141 }
00142 
00143 
00147 QColor KColorCombo::color() const {
00148   return internalcolor;
00149 }
00150 
00151 void KColorCombo::resizeEvent( QResizeEvent *re )
00152 {
00153     QComboBox::resizeEvent( re );
00154 
00155     addColors();
00156 }
00157 
00161 void KColorCombo::showEmptyList()
00162 {
00163     d->showEmptyList=true;
00164     addColors();
00165 }
00166 
00167 void KColorCombo::slotActivated( int index )
00168 {
00169     if ( index == 0 )
00170     {
00171         if ( KColorDialog::getColor( customColor, this ) == QDialog::Accepted )
00172         {
00173             QPainter painter;
00174             QPen pen;
00175             QRect rect( 0, 0, width(), QFontMetrics(painter.font()).height()+4);
00176             QPixmap pixmap( rect.width(), rect.height() );
00177 
00178             if ( qGray( customColor.rgb() ) < 128 )
00179                 pen.setColor( white );
00180             else
00181                 pen.setColor( black );
00182 
00183             painter.begin( &pixmap );
00184             QBrush brush( customColor );
00185             painter.fillRect( rect, brush );
00186             painter.setPen( pen );
00187             painter.drawText( 2, QFontMetrics(painter.font()).ascent()+2, i18n("Custom...") );
00188             painter.end();
00189 
00190             changeItem( pixmap, 0 );
00191             pixmap.detach();
00192         }
00193 
00194         internalcolor = customColor;
00195     }
00196     else
00197         internalcolor = standardPalette[ index - 1 ];
00198 
00199     emit activated( internalcolor );
00200 }
00201 
00202 void KColorCombo::slotHighlighted( int index )
00203 {
00204     if ( index == 0 )
00205         internalcolor = customColor;
00206     else
00207         internalcolor = standardPalette[ index - 1 ];
00208 
00209     emit highlighted( internalcolor );
00210 }
00211 
00212 void KColorCombo::addColors()
00213 {
00214     QPainter painter;
00215     QPen pen;
00216     QRect rect( 0, 0, width(), QFontMetrics(painter.font()).height()+4 );
00217     QPixmap pixmap( rect.width(), rect.height() );
00218     int i;
00219 
00220     clear();
00221     if (d->showEmptyList) return;
00222 
00223     createStandardPalette();
00224 
00225     for ( i = 0; i < STANDARD_PAL_SIZE; i++ )
00226         if ( standardPalette[i] == internalcolor ) break;
00227 
00228     if ( i == STANDARD_PAL_SIZE )
00229         customColor = internalcolor;
00230 
00231     if ( qGray( customColor.rgb() ) < 128 )
00232         pen.setColor( white );
00233     else
00234         pen.setColor( black );
00235 
00236     painter.begin( &pixmap );
00237     QBrush brush( customColor );
00238     painter.fillRect( rect, brush );
00239     painter.setPen( pen );
00240     painter.drawText( 2, QFontMetrics(painter.font()).ascent()+2, i18n("Custom...") );
00241     painter.end();
00242 
00243     insertItem( pixmap );
00244     pixmap.detach();
00245 
00246     for ( i = 0; i < STANDARD_PAL_SIZE; i++ )
00247     {
00248         painter.begin( &pixmap );
00249         QBrush brush( standardPalette[i] );
00250         painter.fillRect( rect, brush );
00251         painter.end();
00252 
00253         insertItem( pixmap );
00254         pixmap.detach();
00255 
00256         if ( standardPalette[i] == internalcolor )
00257             setCurrentItem( i + 1 );
00258     }
00259 }
00260 
00261 void KColorCombo::virtual_hook( int, void* )
00262 { /*BASE::virtual_hook( id, data );*/ }
00263 
00264 #include "kcolorcombo.moc"

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