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115 lines
3.0 KiB
115 lines
3.0 KiB
/***************************************************************************
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* Copyright (C) by *
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* - 2005: Christian Leh <moodwrod@web.de> *
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* *
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <tqfontmetrics.h>
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#include "scaler.h"
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Scaler::Scaler(TQSize baseResolution, TQSize targetResolution)
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{
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mBaseResolution = baseResolution;
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mTargetResolution = targetResolution;
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}
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void Scaler::autoCoords(TQPoint* pt, const TQFont& f, const TQString& s)
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{
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TQFontMetrics fm(f);
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TQSize fmSize(fm.size(0L, s));
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autoCoords(pt, fmSize);
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}
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void Scaler::autoCoords(TQPoint* pt, const TQSize s)
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{
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scaleCoords(pt);
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if ((pt->x() == -1) && (pt->y() != -1))
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pt->setX(center(mTargetResolution.width(), s.width()));
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else if ((pt->y() == -1) && (pt->x() != -1))
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pt->setY(center(mTargetResolution.height(), s.height()));
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else if (*pt == TQPoint(-1, -1))
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*pt = TQPoint(center(mTargetResolution.width(), s.width()), center(mTargetResolution.height(), s.height()));
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}
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void Scaler::scaleCoords(TQPoint* pt)
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{
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if (mBaseResolution == mTargetResolution)
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return;
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int ox = pt->x();
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int oy = pt->y();
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float tx = float(mBaseResolution.width()) / float(ox);
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float ty = float(mBaseResolution.height()) / float(oy);
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int nx = intIt(float(mTargetResolution.width()) / tx);
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int ny = intIt(float(mTargetResolution.height()) / ty);
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pt->setX((ox == -1) ? -1 : nx);
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pt->setY((oy == -1) ? -1 : ny);
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}
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bool Scaler::scaleSize(TQImage* i)
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{
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if ((!i) || !resolutionDiff())
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return false;
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float tx = float(mTargetResolution.width()) / float(mBaseResolution.width());
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float ty = float(mTargetResolution.height()) / float(mBaseResolution.height());
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int nx = intIt(float(i->width()) * tx);
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int ny = intIt(float(i->height()) * ty);
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*i = i->smoothScale(nx, ny);
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return true;
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}
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bool Scaler::scaleSize(TQFont* f)
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{
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if ((!f) || !resolutionDiff())
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return false;
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const float d = 96 / 72;
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const float tx = float(mTargetResolution.height()) / float(mBaseResolution.height());
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float pt = f->pointSizeFloat();
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int hPx = intIt(pt * d);
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f->setPixelSize(intIt(float(hPx) * tx));
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return true;
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}
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bool Scaler::resolutionDiff()
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{
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return (mBaseResolution != mTargetResolution);
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}
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int Scaler::intIt(const float v)
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{
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float t = v - float(int(v));
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float tt = (t < 0.5) ? 0 : 1;
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return int(v + tt);
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}
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int Scaler::center(const int width, const int size, int offset)
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{
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return int(width / 2) - int(size / 2) + offset;
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}
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