static void
_gradient_do (gpointer key,
gpointer value,
gpointer user_data)
{
DiaPattern *pattern = (DiaPattern *)value;
GradientData *gd = (GradientData *)user_data;
DiaSvgRenderer *renderer = gd->renderer;
xmlNodePtr parent = gd->node;
xmlNodePtr gradient;
DiaPatternType pt;
guint flags;
Point p1, p2;
gchar vbuf[DTOSTR_BUF_SIZE];
real scale = renderer->scale;
dia_pattern_get_settings (pattern, &pt, &flags);
if ((flags & DIA_PATTERN_USER_SPACE)==0)
scale = 1.0;
dia_pattern_get_points (pattern, &p1, &p2);
if (pt == DIA_LINEAR_GRADIENT) {
gradient = xmlNewChild (parent, parent->ns, (const xmlChar *)"linearGradient", NULL);
xmlSetProp (gradient, (const xmlChar *)"x1", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p1.x * scale));
xmlSetProp (gradient, (const xmlChar *)"y1", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p1.y * scale));
xmlSetProp (gradient, (const xmlChar *)"x2", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p2.x * scale));
xmlSetProp (gradient, (const xmlChar *)"y2", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p2.y * scale));
} else if (pt == DIA_RADIAL_GRADIENT) {
real r;
dia_pattern_get_radius (pattern, &r);
gradient = xmlNewChild (parent, parent->ns, (const xmlChar *)"radialGradient", NULL);
xmlSetProp (gradient, (const xmlChar *)"cx", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p1.x * scale));
xmlSetProp (gradient, (const xmlChar *)"cy", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p1.y * scale));
xmlSetProp (gradient, (const xmlChar *)"fx", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p2.x * scale));
xmlSetProp (gradient, (const xmlChar *)"fy", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", p2.y * scale));
xmlSetProp (gradient, (const xmlChar *)"r", (const xmlChar *)g_ascii_formatd(vbuf,sizeof(vbuf),"%g", r * scale));
} else {
gradient = xmlNewChild (parent, parent->ns, (const xmlChar *)"pattern", NULL);
}
/* don't miss to set the id */
{
gchar *id = _make_pattern_key (pattern);
xmlSetProp (gradient, (const xmlChar *)"id", (const xmlChar *)id);
g_free (id);
}
if (flags & DIA_PATTERN_USER_SPACE)
xmlSetProp (gradient, (const xmlChar *)"gradientUnits", (const xmlChar *)"userSpaceOnUse");
if (flags & DIA_PATTERN_EXTEND_REPEAT)
xmlSetProp (gradient, (const xmlChar *)"spreadMethod", (const xmlChar *)"repeat");
else if (flags & DIA_PATTERN_EXTEND_REFLECT)
xmlSetProp (gradient, (const xmlChar *)"spreadMethod", (const xmlChar *)"reflect");
else if (flags & DIA_PATTERN_EXTEND_PAD)
xmlSetProp (gradient, (const xmlChar *)"spreadMethod", (const xmlChar *)"pad");
if (pt == DIA_LINEAR_GRADIENT || pt == DIA_RADIAL_GRADIENT) {
dia_pattern_foreach (pattern, _color_stop_do, gradient);
} else {
g_warning ("SVG pattern data not implemented");
}
}
static cairo_pattern_t *
_pattern_build_for_cairo (DiaPattern *pattern, const Rectangle *ext)
{
cairo_pattern_t *pat;
gsize i;
real x, y;
DiaPatternType type;
guint flags;
Point p1, p2;
real r;
g_return_val_if_fail (pattern != NULL, NULL);
dia_pattern_get_settings (pattern, &type, &flags);
dia_pattern_get_points (pattern, &p1, &p2);
dia_pattern_get_radius (pattern, &r);
switch (type ) {
case DIA_LINEAR_GRADIENT :
pat = cairo_pattern_create_linear (p1.x, p1.y, p2.x, p2.y);
break;
case DIA_RADIAL_GRADIENT :
pat = cairo_pattern_create_radial (p2.x, p2.y, 0.0, p1.x, p1.y, r);
break;
default :
g_warning ("_pattern_build_for_cairo non such.");
return NULL;
}
/* this must only be optionally done */
if ((flags & DIA_PATTERN_USER_SPACE)==0) {
cairo_matrix_t matrix;
real w = ext->right - ext->left;
real h = ext->bottom - ext->top;
cairo_matrix_init (&matrix, w, 0.0, 0.0, h, ext->left, ext->top);
cairo_matrix_invert (&matrix);
cairo_pattern_set_matrix (pat, &matrix);
}
if (flags & DIA_PATTERN_EXTEND_PAD)
cairo_pattern_set_extend (pat, CAIRO_EXTEND_PAD);
else if (flags & DIA_PATTERN_EXTEND_REPEAT)
cairo_pattern_set_extend (pat, CAIRO_EXTEND_REPEAT);
else if (flags & DIA_PATTERN_EXTEND_REFLECT)
cairo_pattern_set_extend (pat, CAIRO_EXTEND_REFLECT);
dia_pattern_foreach (pattern, _add_color_stop, pat);
return pat;
}