Jim Evins
122 lines
2.4 KiB
C++
122 lines
2.4 KiB
C++
/* ColorHistory.cpp
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*
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* Copyright (C) 2014 Jim Evins <evins@snaught.com>
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*
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* This file is part of gLabels-qt.
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*
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* gLabels-qt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gLabels-qt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gLabels-qt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ColorHistory.h"
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#include <QSettings>
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namespace glabels
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{
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ColorHistory::ColorHistory()
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{
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}
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ColorHistory* ColorHistory::instance()
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{
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static ColorHistory* singletonInstance = 0;
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if ( singletonInstance == 0 )
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{
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singletonInstance = new ColorHistory();
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}
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return singletonInstance;
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}
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void ColorHistory::addColor( const QColor &color )
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{
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QColor oldColors[MAX_COLORS];
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QColor newColors[MAX_COLORS];
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int n;
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readColorArray( oldColors, &n );
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int i;
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newColors[0] = color;
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for ( i = 0; ( i < (MAX_COLORS-1) ) && (i < n); i++ )
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{
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newColors[i+1] = oldColors[i];
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}
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writeColorArray( newColors, i+1 );
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emit changed();
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}
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QColor ColorHistory::getColor( int i )
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{
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QColor colors[MAX_COLORS];
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int n;
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readColorArray( colors, &n );
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if ( (n > 0) && (i < n) )
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{
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return colors[i];
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}
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else
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{
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return QColor( 0, 0, 0, 0 );
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}
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}
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void ColorHistory::readColorArray( QColor array[MAX_COLORS], int* n )
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{
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QSettings settings;
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settings.beginGroup( "ColorHistory" );
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settings.beginReadArray( "history" );
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*n = settings.value( "history/size", 0 ).toInt();
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for ( int i = 0; i < *n; i++ )
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{
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settings.setArrayIndex(i);
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array[i] = settings.value( "color" ).value<QColor>();
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}
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settings.endArray();
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settings.endGroup();
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}
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void ColorHistory::writeColorArray( const QColor array[MAX_COLORS], int n )
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{
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QSettings settings;
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settings.beginGroup( "ColorHistory" );
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settings.beginWriteArray( "history" );
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for ( int i = 0; (i < n) && (i < MAX_COLORS); i++ )
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{
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settings.setArrayIndex(i);
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settings.setValue( "color", array[i] );
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}
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settings.endArray();
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settings.endGroup();
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}
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}
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