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// zoom.cpp
//
// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
//
// (C) 2002 Stefan Kebekus
// Distributed under the GPL
// Add header files alphabetically
#include <config.h>
#include <math.h>
#include <tqstringlist.h>
#include <klocale.h>
#include "zoom.h"
#include "zoomlimits.h"
float zoomVals[] = {0.20, 0.33, 0.50, 0.75, 1.00, 1.25, 1.50, 2.00, 2.50, 0};
Zoom::Zoom()
{
valueNames << i18n("Fit to Page Width");
valueNames << i18n("Fit to Page Height");
valueNames << i18n("Fit to Page");
_zoomValue = 1.0;
valNo = 6; // 1.0 is 6rd entry in the list
for(int i=0; zoomVals[i] != 0; i++)
valueNames << TQString("%1%").tqarg(zoomVals[i]);
}
void Zoom::setZoomValue(const TQString &cval)
{
float fval;
// Remove a trailing '%', if any
TQString val = cval.stripWhiteSpace();
if (val.right(1) == "%")
val = val.left(val.length()-1).stripWhiteSpace();
bool ok;
fval = val.toFloat(&ok)/100.0;
if (ok == true)
setZoomValue(fval);
else {
emit(zoomNamesChanged(valueNames));
emit(valNoChanged(valNo));
emit(zoomNameChanged(TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5))));
}
}
void Zoom::setZoomFitWidth(float zoom)
{
// Make sure _zoomValue is in the permissible range!
if (zoom < ZoomLimits::MinZoom/1000.0)
zoom = ZoomLimits::MinZoom/1000.0;
if (zoom > ZoomLimits::MaxZoom/1000.0)
zoom = ZoomLimits::MaxZoom/1000.0;
_zoomValue = zoom;
valNo = 0;
emit(valNoChanged(valNo));
emit(zoomNameChanged(TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5))));
}
void Zoom::setZoomFitHeight(float zoom)
{
// Make sure _zoomValue is in the permissible range!
if (zoom < ZoomLimits::MinZoom/1000.0)
zoom = ZoomLimits::MinZoom/1000.0;
if (zoom > ZoomLimits::MaxZoom/1000.0)
zoom = ZoomLimits::MaxZoom/1000.0;
_zoomValue = zoom;
valNo = 1;
emit(valNoChanged(valNo));
emit(zoomNameChanged(TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5))));
}
void Zoom::setZoomFitPage(float zoom)
{
// Make sure _zoomValue is in the permissible range!
if (zoom < ZoomLimits::MinZoom/1000.0)
zoom = ZoomLimits::MinZoom/1000.0;
if (zoom > ZoomLimits::MaxZoom/1000.0)
zoom = ZoomLimits::MaxZoom/1000.0;
_zoomValue = zoom;
valNo = 2;
emit(valNoChanged(valNo));
emit(zoomNameChanged(TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5))));
}
void Zoom::setZoomValue(float f)
{
// Make sure _zoomValue is in the permissible range!
if (f < ZoomLimits::MinZoom/1000.0)
f = ZoomLimits::MinZoom/1000.0;
if (f > ZoomLimits::MaxZoom/1000.0)
f = ZoomLimits::MaxZoom/1000.0;
_zoomValue = f;
valueNames.clear();
valueNames << i18n("Fit to Page Width");
valueNames << i18n("Fit to Page Height");
valueNames << i18n("Fit to Page");
bool flag = false;
for(int i = 0; zoomVals[i] != 0; i++) {
if ((_zoomValue <= zoomVals[i]) && (flag == false)) {
flag = true;
valNo = i + 3;
if (fabs(_zoomValue-zoomVals[i]) > 0.01)
valueNames << TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5));
}
valueNames << TQString("%1%").tqarg((int)(zoomVals[i]*100.0+0.5));
}
if (flag == false) {
valNo = valueNames.size();
valueNames << TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5));
}
emit(zoomNamesChanged(valueNames));
emit(valNoChanged(valNo));
emit(zoomNameChanged(TQString("%1%").tqarg((int)(_zoomValue*100.0+0.5))));
}
float Zoom::zoomIn()
{
int i;
for(i=0; zoomVals[i] != 0; i++)
if (zoomVals[i] > _zoomValue)
return zoomVals[i];
return zoomVals[i-1];
}
float Zoom::zoomOut()
{
float result = zoomVals[0];
for(int i=0; zoomVals[i] != 0; i++)
if (_zoomValue > zoomVals[i])
result = zoomVals[i];
return result;
}
#include "zoom.moc"
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