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93 lines
2.3 KiB
93 lines
2.3 KiB
// Copyright (C) 2002 Dominique Devriese <devriese@kde.org>
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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// This program 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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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// 02110-1301, USA.
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#include "screeninfo.h"
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#include <cmath>
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ScreenInfo::ScreenInfo( const Rect& docRect, const TQRect& viewRect )
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: mkrect( docRect.normalized() ), mqrect( viewRect.normalize() )
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{
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}
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Rect ScreenInfo::fromScreen( const TQRect& r ) const
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{
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return Rect(
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fromScreen( r.topLeft() ),
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fromScreen( r.bottomRight() )
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).normalized();
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}
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Coordinate ScreenInfo::fromScreen( const TQPoint& p ) const
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{
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// invert the y-axis: 0 is at the bottom !
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Coordinate t( p.x(), mqrect.height() - p.y() );
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t *= mkrect.width();
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t /= mqrect.width();
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return t + mkrect.bottomLeft();
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}
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TQPoint ScreenInfo::toScreen( const Coordinate& p ) const
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{
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Coordinate t = p - mkrect.bottomLeft();
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t *= mqrect.width();
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t /= mkrect.width();
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// invert the y-axis: 0 is at the bottom !
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return TQPoint( (int) t.x, mqrect.height() - (int) t.y );
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}
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TQRect ScreenInfo::toScreen( const Rect& r ) const
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{
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return TQRect(
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toScreen( r.bottomLeft() ),
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toScreen( r.topRight() )
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).normalize();
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}
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double ScreenInfo::pixelWidth() const
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{
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Coordinate a = fromScreen( TQPoint( 0, 0 ) );
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Coordinate b = fromScreen( TQPoint( 0, 1000 ) );
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return std::fabs( b.y - a.y ) / 1000;
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}
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const Rect& ScreenInfo::shownRect() const
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{
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return mkrect;
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}
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void ScreenInfo::setShownRect( const Rect& r )
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{
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mkrect = r;
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}
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const TQRect ScreenInfo::viewRect() const
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{
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return mqrect;
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}
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void ScreenInfo::setViewRect( const TQRect& r )
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{
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mqrect = r;
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}
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double ScreenInfo::normalMiss( int width ) const
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{
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int twidth = width == -1 ? 1 : width;
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return (twidth+2)*pixelWidth();
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}
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