1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260
|
/* This file is part of the GNU plotutils package. Copyright (C) 1995,
1996, 1997, 1998, 1999, 2000, 2005, 2008, 2009, Free Software
Foundation, Inc.
The GNU plotutils package is free software. You may 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, or (at your
option) any later version.
The GNU plotutils package 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 the GNU plotutils package; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 51 Franklin St., Fifth Floor,
Boston, MA 02110-1301, USA. */
/* This file defines the initialization for any SVGPlotter object,
including both private data and public methods. There is a one-to-one
correspondence between public methods and user-callable functions in the
C API. */
#include "sys-defines.h"
#include "extern.h"
#ifndef LIBPLOTTER
/* In libplot, this is the initialization for the function-pointer part of
a SVGPlotter struct. */
const Plotter _pl_s_default_plotter =
{
/* initialization (after creation) and termination (before deletion) */
_pl_s_initialize, _pl_s_terminate,
/* page manipulation */
_pl_s_begin_page, _pl_s_erase_page, _pl_s_end_page,
/* drawing state manipulation */
_pl_g_push_state, _pl_g_pop_state,
/* internal path-painting methods (endpath() is a wrapper for the first) */
_pl_s_paint_path, _pl_s_paint_paths, _pl_g_path_is_flushable, _pl_g_maybe_prepaint_segments,
/* internal methods for drawing of markers and points */
_pl_g_paint_marker, _pl_s_paint_point,
/* internal methods that plot strings in Hershey, non-Hershey fonts */
_pl_g_paint_text_string_with_escapes, _pl_s_paint_text_string,
_pl_g_get_text_width,
/* private low-level `retrieve font' method */
_pl_g_retrieve_font,
/* `flush output' method, called only if Plotter handles its own output */
_pl_g_flush_output,
/* error handlers */
_pl_g_warning,
_pl_g_error,
};
#endif /* not LIBPLOTTER */
/* The private `initialize' method, which is invoked when a Plotter is
created. It is used for such things as initializing capability flags
from the values of class variables, allocating storage, etc. When this
is invoked, _plotter points to the Plotter that has just been
created. */
void
_pl_s_initialize (S___(Plotter *_plotter))
{
#ifndef LIBPLOTTER
/* in libplot, manually invoke superclass initialization method */
_pl_g_initialize (S___(_plotter));
#endif
/* override generic initializations (which are appropriate to the base
Plotter class), as necessary */
#ifndef LIBPLOTTER
/* tag field, differs in derived classes */
_plotter->data->type = PL_SVG;
#endif
/* output model */
_plotter->data->output_model = PL_OUTPUT_ONE_PAGE;
/* user-queryable capabilities: 0/1/2 = no/yes/maybe */
_plotter->data->have_wide_lines = 1;
_plotter->data->have_dash_array = 1;
_plotter->data->have_solid_fill = 1;
_plotter->data->have_odd_winding_fill = 1;
_plotter->data->have_nonzero_winding_fill = 1;
_plotter->data->have_settable_bg = 1;
_plotter->data->have_escaped_string_support = 0;
_plotter->data->have_ps_fonts = 1;
_plotter->data->have_pcl_fonts = 1;
_plotter->data->have_stick_fonts = 0;
_plotter->data->have_extra_stick_fonts = 0;
_plotter->data->have_other_fonts = 0;
/* text and font-related parameters (internal, not queryable by user);
note that we don't set kern_stick_fonts, because it was set by the
superclass initialization (and it's irrelevant for this Plotter type,
anyway) */
_plotter->data->default_font_type = PL_F_POSTSCRIPT;
_plotter->data->pcl_before_ps = false;
_plotter->data->have_horizontal_justification = false;
_plotter->data->have_vertical_justification = false;
_plotter->data->issue_font_warning = true;
/* path-related parameters (also internal); note that we
don't set max_unfilled_path_length, because it was set by the
superclass initialization */
_plotter->data->have_mixed_paths = false;
_plotter->data->allowed_arc_scaling = AS_ANY;
_plotter->data->allowed_ellarc_scaling = AS_ANY;
_plotter->data->allowed_quad_scaling = AS_ANY;
_plotter->data->allowed_cubic_scaling = AS_ANY;
_plotter->data->allowed_box_scaling = AS_ANY;
_plotter->data->allowed_circle_scaling = AS_ANY;
_plotter->data->allowed_ellipse_scaling = AS_ANY;
/* color-related parameters (also internal) */
_plotter->data->emulate_color = false;
/* dimensions */
_plotter->data->display_model_type = (int)DISP_MODEL_VIRTUAL;
_plotter->data->display_coors_type = (int)DISP_DEVICE_COORS_REAL;
_plotter->data->flipped_y = true;
_plotter->data->imin = 0; /* not used */
_plotter->data->imax = 0;
_plotter->data->jmin = 0;
_plotter->data->jmax = 0;
_plotter->data->xmin = 0.0;
_plotter->data->xmax = 1.0;
_plotter->data->ymin = 1.0; /* note flipped y coordinate */
_plotter->data->ymax = 0.0;
_plotter->data->page_data = (plPageData *)NULL;
/* initialize data members specific to this derived class */
_plotter->s_matrix[0] = 1.0;/* dummy matrix values */
_plotter->s_matrix[1] = 0.0;
_plotter->s_matrix[2] = 0.0;
_plotter->s_matrix[3] = 1.0;
_plotter->s_matrix[4] = 0.0;
_plotter->s_matrix[5] = 0.0;
_plotter->s_matrix_is_unknown = true;
_plotter->s_matrix_is_bogus = false;
_plotter->s_bgcolor.red = -1; /* initialized in s_begin_page */
_plotter->s_bgcolor.green = -1;
_plotter->s_bgcolor.blue = -1;
_plotter->s_bgcolor_suppressed = false;
/* Note: xmin,xmax,ymin,ymax determine the range of device coordinates
over which the viewport will extend (and hence the transformation from
user to device coordinates; see g_space.c).
For an SVG Plotter, `device coordinates' are usually almost the same
as libplot's NDC coordinates, on account of the way we wrap a global
transformation matrix around all graphics in the output file; see
s_closepl.c. However, SVG uses a flipped-y convention: ymin,ymax are
1 and 0 respectively (see above).
Actually, if the user specifies a negative xsize or ysize as part of
the PAGESIZE parameter, we perform an additional flipping, so we can
emit nonnegative width and height attributes for the top-level SVG
element. We do this additional flipping right now. */
/* determine page type, and viewport size and location/offset (the
viewport size, i.e., (xsize,ysize), will be written out at the head of
the SVG file, and the location/offset, i.e., (xorigin,yorigin) and
(xoffset,yoffset), will be ignored) */
_set_page_type (_plotter->data);
if (_plotter->data->viewport_xsize < 0.0)
/* flip map from user to NDC space */
{
_plotter->data->xmin = 1.0;
_plotter->data->xmax = 0.0;
}
if (_plotter->data->viewport_ysize < 0.0)
/* flip map from user to NDC space */
{
_plotter->data->ymin = 0.0;
_plotter->data->ymax = 1.0;
}
/* compute the NDC to device-frame affine map, set it in Plotter */
_compute_ndc_to_device_map (_plotter->data);
}
/* The private `terminate' method, which is invoked when a Plotter is
deleted. It may do such things as write to an output stream from
internal storage, deallocate storage, etc. When this is invoked,
_plotter points to the Plotter that is about to be deleted. */
void
_pl_s_terminate (S___(Plotter *_plotter))
{
}
#ifdef LIBPLOTTER
SVGPlotter::SVGPlotter (FILE *infile, FILE *outfile, FILE *errfile)
:Plotter (infile, outfile, errfile)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (FILE *outfile)
:Plotter (outfile)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (istream& in, ostream& out, ostream& err)
: Plotter (in, out, err)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (ostream& out)
: Plotter (out)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter ()
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (FILE *infile, FILE *outfile, FILE *errfile, PlotterParams ¶meters)
:Plotter (infile, outfile, errfile, parameters)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (FILE *outfile, PlotterParams ¶meters)
:Plotter (outfile, parameters)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (istream& in, ostream& out, ostream& err, PlotterParams ¶meters)
: Plotter (in, out, err, parameters)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (ostream& out, PlotterParams ¶meters)
: Plotter (out, parameters)
{
_pl_s_initialize ();
}
SVGPlotter::SVGPlotter (PlotterParams ¶meters)
: Plotter (parameters)
{
_pl_s_initialize ();
}
SVGPlotter::~SVGPlotter ()
{
_pl_s_terminate ();
}
#endif
|