src/graphics/GraphicsParams.C

   1 /*
   2  * \file GraphicsParams.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author Angus Leeming <a.leeming@ic.ac.uk>
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "GraphicsParams.h"
  16 #include "insets/insetgraphicsParams.h"
  17 #include "lyxrc.h"
  18 #include "support/filetools.h"
  19 #include "support/lstrings.h"
  20 #include "support/LAssert.h"
  21
  22 namespace grfx {
  23
  24 GParams::GParams(InsetGraphicsParams const & iparams, string const & filepath)
  25         : width(0),
  26           height(0),
  27           scale(0),
  28           angle(0)
  29 {
  30         filename = iparams.filename;
  31         if (!filepath.empty()) {
  32                 filename = MakeAbsPath(filename, filepath);
  33         }
  34
  35         if (iparams.clip)
  36                 bb = iparams.bb;
  37
  38         if (iparams.rotate)
  39                 angle = int(iparams.rotateAngle);
  40
  41         if (iparams.display == InsetGraphicsParams::DEFAULT) {
  42
  43                 if (lyxrc.display_graphics == "mono")
  44                         display = MONOCHROME;
  45                 else if (lyxrc.display_graphics == "gray")
  46                         display = GRAYSCALE;
  47                 else if (lyxrc.display_graphics == "color")
  48                         display = COLOR;
  49                 else
  50                         display = NONE;
  51
  52         } else if (iparams.display == InsetGraphicsParams::NONE) {
  53                 display = NONE;
  54
  55         } else if (iparams.display == InsetGraphicsParams::MONOCHROME) {
  56                 display = MONOCHROME;
  57
  58         } else if (iparams.display == InsetGraphicsParams::GRAYSCALE) {
  59                 display = GRAYSCALE;
  60
  61         } else if (iparams.display == InsetGraphicsParams::COLOR) {
  62                 display = COLOR;
  63         }
  64
  65         // Override the above if we're not using a gui
  66         if (!lyxrc.use_gui) {
  67                 display = NONE;
  68         }
  69
  70         if (iparams.lyxsize_type == InsetGraphicsParams::SCALE) {
  71                 scale = iparams.lyxscale;
  72
  73         } else if (iparams.lyxsize_type == InsetGraphicsParams::WH) {
  74                 if (!iparams.lyxwidth.zero())
  75                         width  = iparams.lyxwidth.inPixels(1, 1);
  76                 if (!iparams.lyxheight.zero())
  77                         height = iparams.lyxheight.inPixels(1, 1);
  78
  79                 // inPixels returns a value scaled by lyxrc.zoom.
  80                 // We want, therefore, to undo this.
  81                 double const scaling_factor = 100.0 / double(lyxrc.zoom);
  82                 width  = uint(scaling_factor * width);
  83                 height = uint(scaling_factor * height);
  84         }
  85 }
  86
  87
  88 bool operator==(GParams const & a, GParams const & b)
  89 {
  90         return (a.filename        == b.filename &&
  91                 a.display         == b.display &&
  92                 a.bb              == b.bb &&
  93                 a.width           == b.width &&
  94                 a.height          == b.height &&
  95                 a.scale           == b.scale &&
  96                 a.angle           == b.angle);
  97 }
  98
  99
 100 bool operator!=(GParams const & a, GParams const & b)
 101 {
 102         return !(a == b);
 103 }
 104
 105
 106 BoundingBox::BoundingBox()
 107         : xl(0), yb(0), xr(0), yt(0)
 108 {}
 109
 110
 111 BoundingBox::BoundingBox(string const & bb)
 112 {
 113         if (bb.empty())
 114                 return;
 115
 116         string tmp1;
 117         string tmp2 = split(bb, tmp1, ' ');
 118         if (!isValidLength(tmp1))
 119                 return;
 120
 121         LyXLength const length_xl(tmp1);
 122
 123         tmp2 = split(tmp2, tmp1, ' ');
 124         if (!isValidLength(tmp1))
 125                 return;
 126
 127         LyXLength const length_yb(tmp1);
 128
 129         tmp2 = split(tmp2, tmp1, ' ');
 130         if (!isValidLength(tmp1) || !isValidLength(tmp2))
 131                 return;
 132
 133         LyXLength const length_xr(tmp1);
 134         LyXLength const length_yt(tmp2);
 135
 136         // inPixels returns the length in inches, scaled by
 137         // lyxrc.dpi and lyxrc.zoom.
 138         // We want, therefore, to undo all this lyxrc nonsense because we
 139         // want the bounding box in Postscript pixels.
 140         // Note further that there are 72 Postscript pixels per inch.
 141         double const scaling_factor = 7200.0 / (lyxrc.dpi * lyxrc.zoom);
 142         xl = uint(scaling_factor * length_xl.inPixels(1, 1));
 143         yb = uint(scaling_factor * length_yb.inPixels(1, 1));
 144         xr = uint(scaling_factor * length_xr.inPixels(1, 1));
 145         yt = uint(scaling_factor * length_yt.inPixels(1, 1));
 146
 147         if (xr <= xl || yt <= yb) {
 148                 xl = 0;
 149                 yb = 0;
 150                 xr = 0;
 151                 yt = 0;
 152                 return;
 153         }
 154 }
 155
 156
 157 bool BoundingBox::empty() const
 158 {
 159         return (!xl && !yb && !xr && !yt);
 160 }
 161
 162
 163 bool operator==(BoundingBox const & a, BoundingBox const & b)
 164 {
 165         return (a.xl == b.xl &&
 166                 a.yb == b.yb &&
 167                 a.xr == b.xr &&
 168                 a.yt == b.yt);
 169 }
 170
 171
 172 bool operator!=(BoundingBox const & a, BoundingBox const & b)
 173 {
 174         return !(a == b);
 175 }
 176
 177 } // namespace grfx