1 files changed, 92 insertions, 0 deletions
diff --git a/kig/misc/screeninfo.cc b/kig/misc/screeninfo.cc
new file mode 100644
index 00000000..c1418876
--- /dev/null
+++ b/kig/misc/screeninfo.cc
@@ -0,0 +1,92 @@
+// Copyright (C)  2002  Dominique Devriese <devriese@kde.org>
+
+// 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, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+// 02110-1301, USA.
+
+#include "screeninfo.h"
+
+#include <cmath>
+
+ScreenInfo::ScreenInfo( const Rect& docRect, const QRect& viewRect )
+  : mkrect( docRect.normalized() ), mqrect( viewRect.normalize() )
+{
+}
+
+Rect ScreenInfo::fromScreen( const QRect& r ) const
+{
+  return Rect(
+    fromScreen( r.topLeft() ),
+    fromScreen( r.bottomRight() )
+    ).normalized();
+}
+
+Coordinate ScreenInfo::fromScreen( const QPoint& p ) const
+{
+  // invert the y-axis: 0 is at the bottom !
+  Coordinate t( p.x(), mqrect.height() - p.y() );
+  t *= mkrect.width();
+  t /= mqrect.width();
+  return t + mkrect.bottomLeft();
+}
+
+QPoint ScreenInfo::toScreen( const Coordinate& p ) const
+{
+  Coordinate t = p - mkrect.bottomLeft();
+  t *= mqrect.width();
+  t /= mkrect.width();
+  // invert the y-axis: 0 is at the bottom !
+  return QPoint( (int) t.x, mqrect.height() - (int) t.y );
+}
+
+QRect ScreenInfo::toScreen( const Rect& r ) const
+{
+  return QRect(
+    toScreen( r.bottomLeft() ),
+    toScreen( r.topRight() )
+    ).normalize();
+}
+
+double ScreenInfo::pixelWidth() const
+{
+  Coordinate a = fromScreen( QPoint( 0, 0 ) );
+  Coordinate b = fromScreen( QPoint( 0, 1000 ) );
+  return std::fabs( b.y - a.y ) / 1000;
+}
+
+const Rect& ScreenInfo::shownRect() const
+{
+  return mkrect;
+}
+
+void ScreenInfo::setShownRect( const Rect& r )
+{
+  mkrect = r;
+}
+
+const QRect ScreenInfo::viewRect() const
+{
+  return mqrect;
+}
+
+void ScreenInfo::setViewRect( const QRect& r )
+{
+  mqrect = r;
+}
+
+double ScreenInfo::normalMiss( int width ) const
+{
+  int twidth = width == -1 ? 1 : width;
+  return (twidth+2)*pixelWidth();
+}