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/***************************************************************************
* Copyright (C) 2009, 2011, 2012, 2014 *
* by Glad Deschrijver <glad.deschrijver@gmail.com> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include "zoomaction.h"
#include "globallocale.h"
#include "icon.h"
static const qreal s_minZoomFactor = 0.1;
static const qreal s_maxZoomFactor = 6;
ZoomAction::ZoomAction(QObject *parent, const QString &name)
: SelectAction(parent, name)
{
init();
}
ZoomAction::ZoomAction(const QString &text, QObject *parent, const QString &name)
: SelectAction(text, parent, name)
{
init();
}
ZoomAction::ZoomAction(const Icon &icon, const QString &text, QObject *parent, const QString &name)
: SelectAction(icon, text, parent, name)
{
init();
}
void ZoomAction::init()
{
setEditable(true);
setToolTip(tr("Select or insert zoom factor here"));
setWhatsThis(tr("<p>Select the zoom factor here. "
"Alternatively, you can also introduce a zoom factor and "
"press Enter.</p>"));
setCurrentZoomFactor();
connect(this, SIGNAL(triggered(QString)), this, SLOT(setZoomFactor(QString)));
}
ZoomAction::~ZoomAction()
{
}
qreal ZoomAction::minZoomFactor() const
{
return s_minZoomFactor;
}
qreal ZoomAction::maxZoomFactor() const
{
return s_maxZoomFactor;
}
static QString formatZoomFactor(qreal zoomFactor)
{
QString zoomFactorText = GlobalLocale::formatNumber(zoomFactor, 2);
const QString decimalSymbol = GlobalLocale::decimalSymbol();
zoomFactorText.remove(decimalSymbol + QLatin1String("00"));
// remove trailing zero in numbers like 12.30
if (zoomFactorText.endsWith(QLatin1Char('0'))
&& zoomFactorText.indexOf(decimalSymbol) >= 0)
zoomFactorText.chop(1);
zoomFactorText += QLatin1Char('%');
return zoomFactorText;
}
void ZoomAction::setCurrentZoomFactor(qreal newZoomFactor)
{
const qreal zoomFactorArray[] = {12.50, 25, 50, 75, 100, 125, 150, 200, 250, 300};
const int zoomFactorNumber = 10;
QStringList zoomFactorList;
int newZoomFactorPosition = -1;
bool addNewZoomFactor = true;
if (newZoomFactor < s_minZoomFactor || newZoomFactor > s_maxZoomFactor)
addNewZoomFactor = false;
newZoomFactor *= 100;
for (int i = 0; i < zoomFactorNumber; ++i)
{
if (addNewZoomFactor && newZoomFactor < zoomFactorArray[i])
{
zoomFactorList << formatZoomFactor(newZoomFactor);
newZoomFactorPosition = i;
addNewZoomFactor = false;
}
else if (newZoomFactor == zoomFactorArray[i])
{
newZoomFactorPosition = i;
addNewZoomFactor = false;
}
zoomFactorList << formatZoomFactor(zoomFactorArray[i]);
}
if (addNewZoomFactor)
{
zoomFactorList << formatZoomFactor(newZoomFactor);
newZoomFactorPosition = zoomFactorNumber;
}
disconnect(this, SIGNAL(triggered(QString)), this, SLOT(setZoomFactor(QString)));
removeAllActions();
setItems(zoomFactorList);
if (newZoomFactorPosition >= 0)
setCurrentItem(newZoomFactorPosition);
connect(this, SIGNAL(triggered(QString)), this, SLOT(setZoomFactor(QString)));
}
void ZoomAction::setZoomFactor(qreal zoomFactor)
{
// adjust zoom factor
zoomFactor = qBound(s_minZoomFactor, zoomFactor, s_maxZoomFactor);
// add current zoom factor to the list of zoom factors
const QString zoomFactorString = formatZoomFactor(zoomFactor * 100);
const int zoomFactorIndex = items().indexOf(zoomFactorString);
if (zoomFactorIndex >= 0)
setCurrentItem(zoomFactorIndex);
else
setCurrentZoomFactor(zoomFactor);
Q_EMIT zoomFactorAdded(zoomFactor);
}
void ZoomAction::setZoomFactor(const QString &zoomFactorText)
{
setZoomFactor(GlobalLocale::readNumber(QString(zoomFactorText).remove(QRegExp(QString(QLatin1String("[^\\d\\%1]*")).arg(GlobalLocale::decimalSymbol())))) / 100.0);
}
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