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Implement and fix more of viewBox, path, and transform.

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svn path=/trunk/netsurf/; revision=3655
This commit is contained in:
James Bursa 2007-11-30 03:08:02 +00:00
parent 069525fe89
commit b2c0baffcd
1 changed files with 29 additions and 19 deletions
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48
image/svg.c
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@ -78,7 +78,7 @@ static void svg_parse_paint_attributes(const xmlNode *node,
static void svg_parse_color(const char *s, colour *c);
static void svg_parse_font_attributes(const xmlNode *node,
struct svg_redraw_state *state);
static void svg_parse_transform_attributes(const xmlNode *node,
static void svg_parse_transform_attributes(xmlNode *node,
struct svg_redraw_state *state);
@ -174,18 +174,16 @@ bool svg_redraw(struct content *c, int x, int y,
state.origin_y = y;
state.viewport_width = width;
state.viewport_height = height;
state.ctm.a = 1;
state.ctm.a = scale;
state.ctm.b = 0;
state.ctm.c = 0;
state.ctm.d = 1;
state.ctm.d = scale;
state.ctm.e = 0;
state.ctm.f = 0;
state.style = css_base_style;
state.style.font_size.value.length.value = option_font_size * 0.1;
state.fill = 0x000000;
state.stroke = TRANSPARENT;
state.fill = TRANSPARENT;
state.stroke = 0x000000;
state.stroke_width = 1;
plot.clg(0xffffff);
@ -217,10 +215,10 @@ bool svg_redraw_svg(xmlNode *svg, struct svg_redraw_state state)
&min_x, &min_y, &width, &height) == 4 ||
sscanf(s, "%f %f %f %f",
&min_x, &min_y, &width, &height) == 4) {
state.ctm.a = state.viewport_width / width;
state.ctm.d = state.viewport_height / height;
state.ctm.e = -min_x;
state.ctm.f = -min_y;
state.ctm.a *= state.viewport_width / width;
state.ctm.d *= state.viewport_height / height;
state.ctm.e = -min_x * state.ctm.a;
state.ctm.f = -min_y * state.ctm.d;
}
}
@ -234,6 +232,8 @@ bool svg_redraw_svg(xmlNode *svg, struct svg_redraw_state state)
ok = svg_redraw_svg(child, state);
else if (strcmp(child->name, "g") == 0)
ok = svg_redraw_svg(child, state);
else if (strcmp(child->name, "a") == 0)
ok = svg_redraw_svg(child, state);
else if (strcmp(child->name, "path") == 0)
ok = svg_redraw_path(child, state);
else if (strcmp(child->name, "rect") == 0)
@ -260,11 +260,13 @@ bool svg_redraw_svg(xmlNode *svg, struct svg_redraw_state state)
bool svg_redraw_path(xmlNode *path, struct svg_redraw_state state)
{
char *s, *path_d;
svg_parse_paint_attributes(path, &state);
svg_parse_transform_attributes(path, &state);
/* read d attribute */
char *s = (char *) xmlGetProp(path, (const xmlChar *) "d");
s = path_d = (char *) xmlGetProp(path, (const xmlChar *) "d");
if (!s) {
LOG(("path missing d attribute"));
return false;
@ -362,14 +364,16 @@ bool svg_redraw_path(xmlNode *path, struct svg_redraw_state state)
p[i++] = last_y = y;
s += n;
} while (sscanf(s, "%f %f %f %f %f %f %n",
&x1, &y1, &x2, &y2, &x, &y, &n) == 7);
&x1, &y1, &x2, &y2, &x, &y, &n) == 6);
} else {
/*LOG(("parse failed"));*/
LOG(("parse failed at \"%s\"", s));
break;
}
}
xmlFree(path_d);
/*LOG(("path:"));
for (unsigned int j = 0; j != i; j++) {
LOG((" %f", p[j]));
@ -729,29 +733,33 @@ void svg_parse_font_attributes(const xmlNode *node,
* Parse transform attributes, if present.
*/
void svg_parse_transform_attributes(const xmlNode *node,
void svg_parse_transform_attributes(xmlNode *node,
struct svg_redraw_state *state)
{
char *transform, *s;
float a, b, c, d, e, f;
float ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f;
int n;
/* parse transform */
xmlAttr *transform = xmlHasProp(node, (const xmlChar *) "transform");
s = transform = (char *) xmlGetProp(node,
(const xmlChar *) "transform");
if (transform) {
const char *s = (const char *) transform->children->content;
for (unsigned int i = 0; transform[i]; i++)
if (transform[i] == ',')
transform[i] = ' ';
while (*s) {
if (sscanf(s, "matrix(%f,%f,%f,%f,%f,%f) %n",
if (sscanf(s, "matrix (%f %f %f %f %f %f) %n",
&a, &b, &c, &d, &e, &f, &n) == 6) {
;
} else if (sscanf(s, "translate(%f,%f) %n",
} else if (sscanf(s, "translate (%f %f) %n",
&e, &f, &n) == 2) {
a = d = 1;
b = c = 0;
} else if (sscanf(s, "scale(%f,%f) %n",
} else if (sscanf(s, "scale (%f %f) %n",
&a, &d, &n) == 2) {
b = c = e = f = 0;
s += n;
} else {
break;
}
@ -771,6 +779,8 @@ void svg_parse_transform_attributes(const xmlNode *node,
state->ctm.f = ctm_f;
s += n;
}
xmlFree(transform);
}
}