okular/generators/dvi/simplePageSize.cpp

   1 // -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*-
   2 // SimplePageSize.cpp
   3 //
   4 // Part of KVIEWSHELL - A framework for multipage text/gfx viewers
   5 //
   6 // (C) 2002-2005 Stefan Kebekus
   7 // Distributed under the GPL
   8
   9 #include <config.h>
  10
  11 #include "simplePageSize.h"
  12 #include "kvs_debug.h"
  13
  14 #include <QPaintDevice>
  15
  16
  17 double SimplePageSize::zoomForHeight(quint32 height, const QPaintDevice& pd) const
  18 {
  19   if (!isValid()) {
  20     kError(kvs::shell) << "SimplePageSize::zoomForHeight() called when paper height was invalid" << endl;
  21     return 0.1;
  22   }
  23
  24   return double(height) / (pd.logicalDpiY() * pageHeight.getLength_in_inch());
  25 }
  26
  27
  28 double SimplePageSize::zoomForWidth(quint32 width, const QPaintDevice& pd) const
  29 {
  30   if (!isValid()) {
  31     kError(kvs::shell) << "SimplePageSize::zoomForWidth() called when paper width was invalid" << endl;
  32     return 0.1;
  33   }
  34
  35   return double(width) / (pd.logicalDpiX() * pageWidth.getLength_in_inch());
  36 }
  37
  38
  39 double SimplePageSize::zoomToFitInto(const SimplePageSize &target) const
  40 {
  41   if (!isValid() || isSmall() || !target.isValid()) {
  42     kWarning(kvs::shell) << "SimplePageSize::zoomToFitInto(...) with unsuitable source of target" ;
  43     return 1.0;
  44   }
  45
  46   double z1 = target.width() / pageWidth;
  47   double z2 = target.height() / pageHeight;
  48
  49   return qMin(z1,z2);
  50 }