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127 lines
2.8 KiB
127 lines
2.8 KiB
/*
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* This file is part of the KDE libraries
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* Copyright (c) 2001 Michael Goffioul <tdeprint@swing.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "marginvaluewidget.h"
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#include <math.h>
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MarginValueWidget::MarginValueWidget(KNumInput *below, double value, TQWidget *parent, const char *name)
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: KDoubleNumInput(below, value, parent, name)
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{
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m_mode = Pixels;
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m_block = false;
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setPrecision(0);
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m_dpi = 72.0;
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m_margin = ( float )value;
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setMode(m_mode);
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setRange(0, 999, 1, false);
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connect(this, TQT_SIGNAL(valueChanged(double)), TQT_SLOT(slotValueChanged(double)));
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}
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float MarginValueWidget::margin()
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{
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// Force synchronization
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m_margin = toPixel(value(), m_mode);
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return m_margin;
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}
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void MarginValueWidget::setMargin(float m)
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{
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m_margin = m;
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double v = toValue(m, m_mode);
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m_block = true;
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setValue(v);
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m_block = false;
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emit marginChanged( m_margin );
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}
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float MarginValueWidget::toPixel(double value, int mode)
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{
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switch (mode)
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{
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default:
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case Pixels: return (float)value;
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case IN: return (float)(value * m_dpi);
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case CM: return (float)(value * m_dpi / 2.54);
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case MM: return (float)(value * m_dpi / 25.4);
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}
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}
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double MarginValueWidget::toValue(float pix, int mode)
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{
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switch (mode)
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{
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default:
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case Pixels:
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return (double)pix;
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case IN:
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return (double(pix) / m_dpi);
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case CM:
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return (double(pix) * 2.54 / m_dpi);
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case MM:
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return ( double( pix ) * 25.4 / m_dpi );
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}
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}
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void MarginValueWidget::slotValueChanged(double v)
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{
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if (!m_block)
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{
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m_margin = toPixel( v, m_mode );
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emit marginChanged(margin());
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}
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}
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void MarginValueWidget::setMode(int m)
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{
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if (m != m_mode)
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{
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m_block = true;
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m_mode = m;
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double v = toValue(m_margin, m);
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if (m == Pixels)
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{
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setPrecision(0);
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setRange(0.0, 999.0, 1.0, false);
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}
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else
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{
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setPrecision(3);
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setRange(0.0, 999.0, 0.01, false);
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}
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setValue(v);
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m_block = false;
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}
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}
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void MarginValueWidget::setResolution(int dpi)
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{
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m_dpi = dpi;
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m_block = true;
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setMargin(m_margin);
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m_block = false;
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}
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int MarginValueWidget::resolution() const
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{
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return (int)(m_dpi+0.5);
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}
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#include "marginvaluewidget.moc"
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