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Implement ro_save_draw_path() to enable Draw export of SVGs.

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svn path=/trunk/netsurf/; revision=3666
This commit is contained in:
James Bursa 2007-12-11 04:07:35 +00:00
parent 4525ffbd91
commit 5fdbe77e3e
1 changed files with 88 additions and 1 deletions
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89
riscos/save_draw.c
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@ -1,7 +1,7 @@
/*
* Copyright 2004 John M Bell <jmb202@ecs.soton.ac.uk>
* Copyright 2004 John Tytgat <John.Tytgat@aaug.net>
* Copyright 2005 James Bursa <bursa@users.sourceforge.net>
* Copyright 2007 James Bursa <bursa@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@ -226,6 +226,93 @@ bool ro_save_draw_polygon(int *p, unsigned int n, colour fill)
bool ro_save_draw_path(float *p, unsigned int n, colour fill,
float width, colour c, float *transform)
{
pencil_code code;
int *path;
unsigned int i;
bool empty_path = true;
if (n == 0)
return true;
if (p[0] != PLOTTER_PATH_MOVE) {
LOG(("path doesn't start with a move"));
return false;
}
path = malloc(sizeof *path * (n + 10));
if (!path) {
LOG(("out of memory"));
return false;
}
for (i = 0; i < n; ) {
if (p[i] == PLOTTER_PATH_MOVE) {
path[i] = draw_MOVE_TO;
path[i + 1] = (transform[0] * p[i + 1] +
transform[2] * -p[i + 2] +
transform[4]) * 2;
path[i + 2] = (transform[1] * p[i + 1] +
transform[3] * -p[i + 2] +
-transform[5]) * 2;
i += 3;
} else if (p[i] == PLOTTER_PATH_CLOSE) {
path[i] = draw_CLOSE_LINE;
i++;
} else if (p[i] == PLOTTER_PATH_LINE) {
path[i] = draw_LINE_TO;
path[i + 1] = (transform[0] * p[i + 1] +
transform[2] * -p[i + 2] +
transform[4]) * 2;
path[i + 2] = (transform[1] * p[i + 1] +
transform[3] * -p[i + 2] +
-transform[5]) * 2;
i += 3;
empty_path = false;
} else if (p[i] == PLOTTER_PATH_BEZIER) {
path[i] = draw_BEZIER_TO;
path[i + 1] = (transform[0] * p[i + 1] +
transform[2] * -p[i + 2] +
transform[4]) * 2;
path[i + 2] = (transform[1] * p[i + 1] +
transform[3] * -p[i + 2] +
-transform[5]) * 2;
path[i + 3] = (transform[0] * p[i + 3] +
transform[2] * -p[i + 4] +
transform[4]) * 2;
path[i + 4] = (transform[1] * p[i + 3] +
transform[3] * -p[i + 4] +
-transform[5]) * 2;
path[i + 5] = (transform[0] * p[i + 5] +
transform[2] * -p[i + 6] +
transform[4]) * 2;
path[i + 6] = (transform[1] * p[i + 5] +
transform[3] * -p[i + 6] +
-transform[5]) * 2;
i += 7;
empty_path = false;
} else {
LOG(("bad path command %f", p[i]));
free(path);
return false;
}
}
path[i] = draw_END_PATH;
if (empty_path) {
free(path);
return true;
}
code = pencil_path(ro_save_draw_diagram, path, i + 1,
fill == TRANSPARENT ? pencil_TRANSPARENT : fill << 8,
c == TRANSPARENT ? pencil_TRANSPARENT : c << 8,
width, pencil_JOIN_MITRED,
pencil_CAP_BUTT, pencil_CAP_BUTT, 0, 0, false,
pencil_SOLID);
free(path);
if (code != pencil_OK)
return ro_save_draw_error(code);
return true;
}