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authorDaniel Silverstone <dsilvers@digital-scurf.org>2012-11-03 17:51:55 +0000
committerDaniel Silverstone <dsilvers@digital-scurf.org>2012-11-03 17:51:55 +0000
commit9275ab30890fe7def93dcfe913c9209d32c2d00e (patch)
treee2b5f1697a7f89401abb457a8d1b7df773564606 /src/svgtiny_gradient.c
parentb9b4c3c90eea9b00da17d0cbdce195d715fdb01a (diff)
parentdc1d99abcc35fd50673ed009d9247ef976beed4f (diff)
downloadlibsvgtiny-9275ab30890fe7def93dcfe913c9209d32c2d00e.tar.gz
libsvgtiny-9275ab30890fe7def93dcfe913c9209d32c2d00e.tar.bz2
Merge branch 'dsilvers/tolibdom'
Diffstat (limited to 'src/svgtiny_gradient.c')
-rw-r--r--src/svgtiny_gradient.c306
1 files changed, 192 insertions, 114 deletions
diff --git a/src/svgtiny_gradient.c b/src/svgtiny_gradient.c
index 3a8db73..19f7f1f 100644
--- a/src/svgtiny_gradient.c
+++ b/src/svgtiny_gradient.c
@@ -8,12 +8,15 @@
#include <assert.h>
#include <math.h>
#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
#include "svgtiny.h"
#include "svgtiny_internal.h"
#undef GRADIENT_DEBUG
-static svgtiny_code svgtiny_parse_linear_gradient(xmlNode *linear,
+static svgtiny_code svgtiny_parse_linear_gradient(dom_element *linear,
struct svgtiny_parse_state *state);
static float svgtiny_parse_gradient_offset(const char *s);
static void svgtiny_path_bbox(float *p, unsigned int n,
@@ -27,15 +30,25 @@ static void svgtiny_invert_matrix(float *m, float *inv);
void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state)
{
- xmlNode *gradient;
+ dom_element *gradient;
+ dom_string *id_str;
+ dom_exception exc;
fprintf(stderr, "svgtiny_find_gradient: id \"%s\"\n", id);
state->linear_gradient_stop_count = 0;
- state->gradient_x1 = "0%";
- state->gradient_y1 = "0%";
- state->gradient_x2 = "100%";
- state->gradient_y2 = "0%";
+ if (state->gradient_x1 != NULL)
+ dom_string_unref(state->gradient_x1);
+ if (state->gradient_y1 != NULL)
+ dom_string_unref(state->gradient_y1);
+ if (state->gradient_x2 != NULL)
+ dom_string_unref(state->gradient_x2);
+ if (state->gradient_y2 != NULL)
+ dom_string_unref(state->gradient_y2);
+ state->gradient_x1 = dom_string_ref(state->interned_zero_percent);
+ state->gradient_y1 = dom_string_ref(state->interned_zero_percent);
+ state->gradient_x2 = dom_string_ref(state->interned_hundred_percent);
+ state->gradient_y2 = dom_string_ref(state->interned_zero_percent);
state->gradient_user_space_on_use = false;
state->gradient_transform.a = 1;
state->gradient_transform.b = 0;
@@ -43,19 +56,34 @@ void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state)
state->gradient_transform.d = 1;
state->gradient_transform.e = 0;
state->gradient_transform.f = 0;
+
+ exc = dom_string_create_interned((const uint8_t *) id, strlen(id),
+ &id_str);
+ if (exc != DOM_NO_ERR)
+ return;
+
+ exc = dom_document_get_element_by_id(state->document, id_str,
+ &gradient);
+ dom_string_unref(id_str);
+ if (exc != DOM_NO_ERR)
+ return;
- gradient = svgtiny_find_element_by_id(
- (xmlNode *) state->document, id);
- fprintf(stderr, "gradient %p\n", (void *) gradient);
- if (!gradient) {
+ if (gradient == NULL) {
fprintf(stderr, "gradient \"%s\" not found\n", id);
return;
}
-
- fprintf(stderr, "gradient name \"%s\"\n", gradient->name);
- if (strcmp((const char *) gradient->name, "linearGradient") == 0) {
- svgtiny_parse_linear_gradient(gradient, state);
+
+ exc = dom_node_get_node_name(gradient, &id_str);
+ if (exc != DOM_NO_ERR) {
+ dom_node_unref(gradient);
+ return;
}
+
+ if (dom_string_isequal(id_str, state->interned_linearGradient))
+ svgtiny_parse_linear_gradient(gradient, state);
+
+ dom_string_unref(id_str);
+ dom_node_unref(gradient);
}
@@ -65,94 +93,163 @@ void svgtiny_find_gradient(const char *id, struct svgtiny_parse_state *state)
* http://www.w3.org/TR/SVG11/pservers#LinearGradients
*/
-svgtiny_code svgtiny_parse_linear_gradient(xmlNode *linear,
+svgtiny_code svgtiny_parse_linear_gradient(dom_element *linear,
struct svgtiny_parse_state *state)
{
unsigned int i = 0;
- xmlNode *stop;
- xmlAttr *attr;
- xmlAttr *href = xmlHasProp(linear, (const xmlChar *) "href");
- if (href && href->children->content[0] == '#')
- svgtiny_find_gradient((const char *) href->children->content
- + 1, state);
-
- for (attr = linear->properties; attr; attr = attr->next) {
- const char *name = (const char *) attr->name;
- const char *content = (const char *) attr->children->content;
- if (strcmp(name, "x1") == 0)
- state->gradient_x1 = content;
- else if (strcmp(name, "y1") == 0)
- state->gradient_y1 = content;
- else if (strcmp(name, "x2") == 0)
- state->gradient_x2 = content;
- else if (strcmp(name, "y2") == 0)
- state->gradient_y2 = content;
- else if (strcmp(name, "gradientUnits") == 0)
- state->gradient_user_space_on_use =
- strcmp(content, "userSpaceOnUse") == 0;
- else if (strcmp(name, "gradientTransform") == 0) {
- float a = 1, b = 0, c = 0, d = 1, e = 0, f = 0;
- char *s = strdup(content);
- if (!s)
- return svgtiny_OUT_OF_MEMORY;
- svgtiny_parse_transform(s, &a, &b, &c, &d, &e, &f);
+ dom_string *attr;
+ dom_exception exc;
+ dom_nodelist *stops;
+
+ exc = dom_element_get_attribute(linear, state->interned_href, &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ if (dom_string_data(attr)[0] == (uint8_t) '#') {
+ char *s = strndup(dom_string_data(attr) + 1,
+ dom_string_length(attr) - 1);
+ svgtiny_find_gradient(s, state);
free(s);
- fprintf(stderr, "transform %g %g %g %g %g %g\n",
- a, b, c, d, e, f);
- state->gradient_transform.a = a;
- state->gradient_transform.b = b;
- state->gradient_transform.c = c;
- state->gradient_transform.d = d;
- state->gradient_transform.e = e;
- state->gradient_transform.f = f;
}
- }
+ dom_string_unref(attr);
+ }
+
+ exc = dom_element_get_attribute(linear, state->interned_x1, &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ dom_string_unref(state->gradient_x1);
+ state->gradient_x1 = attr;
+ attr = NULL;
+ }
- for (stop = linear->children; stop; stop = stop->next) {
- float offset = -1;
- svgtiny_colour color = svgtiny_TRANSPARENT;
+ exc = dom_element_get_attribute(linear, state->interned_y1, &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ dom_string_unref(state->gradient_y1);
+ state->gradient_y1 = attr;
+ attr = NULL;
+ }
- if (stop->type != XML_ELEMENT_NODE)
- continue;
- if (strcmp((const char *) stop->name, "stop") != 0)
- continue;
+ exc = dom_element_get_attribute(linear, state->interned_x2, &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ dom_string_unref(state->gradient_x2);
+ state->gradient_x2 = attr;
+ attr = NULL;
+ }
- for (attr = stop->properties; attr;
- attr = attr->next) {
- const char *name = (const char *) attr->name;
- const char *content =
- (const char *) attr->children->content;
- if (strcmp(name, "offset") == 0)
- offset = svgtiny_parse_gradient_offset(content);
- else if (strcmp(name, "stop-color") == 0)
- svgtiny_parse_color(content, &color, state);
- else if (strcmp(name, "style") == 0) {
+ exc = dom_element_get_attribute(linear, state->interned_y2, &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ dom_string_unref(state->gradient_y2);
+ state->gradient_y2 = attr;
+ attr = NULL;
+ }
+
+ exc = dom_element_get_attribute(linear, state->interned_gradientUnits,
+ &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ state->gradient_user_space_on_use =
+ dom_string_isequal(attr,
+ state->interned_userSpaceOnUse);
+ dom_string_unref(attr);
+ }
+
+ exc = dom_element_get_attribute(linear,
+ state->interned_gradientTransform,
+ &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ float a = 1, b = 0, c = 0, d = 1, e = 0, f = 0;
+ char *s = strndup(dom_string_data(attr),
+ dom_string_length(attr));
+ if (s == NULL) {
+ dom_string_unref(attr);
+ return svgtiny_OUT_OF_MEMORY;
+ }
+ svgtiny_parse_transform(s, &a, &b, &c, &d, &e, &f);
+ free(s);
+ fprintf(stderr, "transform %g %g %g %g %g %g\n",
+ a, b, c, d, e, f);
+ state->gradient_transform.a = a;
+ state->gradient_transform.b = b;
+ state->gradient_transform.c = c;
+ state->gradient_transform.d = d;
+ state->gradient_transform.e = e;
+ state->gradient_transform.f = f;
+ dom_string_unref(attr);
+ }
+
+ exc = dom_element_get_elements_by_tag_name(linear,
+ state->interned_stop,
+ &stops);
+ if (exc == DOM_NO_ERR && stops != NULL) {
+ uint32_t listlen, stopnr;
+ exc = dom_nodelist_get_length(stops, &listlen);
+ if (exc != DOM_NO_ERR) {
+ dom_nodelist_unref(stops);
+ goto no_more_stops;
+ }
+
+ for (stopnr = 0; stopnr < listlen; ++stopnr) {
+ dom_element *stop;
+ float offset = -1;
+ svgtiny_colour color = svgtiny_TRANSPARENT;
+ exc = dom_nodelist_item(stops, stopnr, &stop);
+ if (exc != DOM_NO_ERR)
+ continue;
+ exc = dom_element_get_attribute(stop,
+ state->interned_offset,
+ &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ char *s = strndup(dom_string_data(attr),
+ dom_string_length(attr));
+ offset = svgtiny_parse_gradient_offset(s);
+ free(s);
+ dom_string_unref(attr);
+ }
+ exc = dom_element_get_attribute(stop,
+ state->interned_stop_color,
+ &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ svgtiny_parse_color(attr, &color, state);
+ dom_string_unref(attr);
+ }
+ exc = dom_element_get_attribute(stop,
+ state->interned_style,
+ &attr);
+ if (exc == DOM_NO_ERR && attr != NULL) {
+ char *content = strndup(dom_string_data(attr),
+ dom_string_length(attr));
const char *s;
- char *value;
+ dom_string *value;
if ((s = strstr(content, "stop-color:"))) {
s += 11;
while (*s == ' ')
s++;
- value = strndup(s, strcspn(s, "; "));
- svgtiny_parse_color(value, &color,
- state);
- free(value);
+ exc = dom_string_create_interned(
+ (const uint8_t *) s,
+ strcspn(s, "; "),
+ &value);
+ if (exc != DOM_NO_ERR &&
+ value != NULL) {
+ svgtiny_parse_color(value,
+ &color,
+ state);
+ dom_string_unref(value);
+ }
}
+ free(content);
+ dom_string_unref(attr);
}
+ if (offset != -1 && color != svgtiny_TRANSPARENT) {
+ fprintf(stderr, "stop %g %x\n", offset, color);
+ state->gradient_stop[i].offset = offset;
+ state->gradient_stop[i].color = color;
+ i++;
+ }
+ dom_node_unref(stop);
+ if (i == svgtiny_MAX_STOPS)
+ break;
}
-
- if (offset != -1 && color != svgtiny_TRANSPARENT) {
- fprintf(stderr, "stop %g %x\n", offset, color);
- state->gradient_stop[i].offset = offset;
- state->gradient_stop[i].color = color;
- i++;
- }
-
- if (i == svgtiny_MAX_STOPS)
- break;
+
+ dom_nodelist_unref(stops);
}
-
- if (i)
+no_more_stops:
+ if (i > 0)
state->linear_gradient_stop_count = i;
return svgtiny_OK;
@@ -219,9 +316,16 @@ svgtiny_code svgtiny_add_path_linear_gradient(float *p, unsigned int n,
#endif
/* compute gradient vector */
- fprintf(stderr, "x1 %s, y1 %s, x2 %s, y2 %s\n",
- state->gradient_x1, state->gradient_y1,
- state->gradient_x2, state->gradient_y2);
+ fprintf(stderr, "x1 %*s, y1 %*s, x2 %*s, y2 %*s\n",
+ dom_string_length(state->gradient_x1),
+ dom_string_data(state->gradient_x1),
+ dom_string_length(state->gradient_y1),
+ dom_string_data(state->gradient_y1),
+ dom_string_length(state->gradient_x2),
+ dom_string_data(state->gradient_x2),
+ dom_string_length(state->gradient_y2),
+ dom_string_data(state->gradient_y2));
+
if (!state->gradient_user_space_on_use) {
gradient_x0 = object_x0 +
svgtiny_parse_length(state->gradient_x1,
@@ -642,29 +746,3 @@ void svgtiny_invert_matrix(float *m, float *inv)
inv[5] = (m[1]*m[4] - m[0]*m[5]) / determinant;
}
-
-/**
- * Find an element in the document by id.
- */
-
-xmlNode *svgtiny_find_element_by_id(xmlNode *node, const char *id)
-{
- xmlNode *child;
- xmlNode *found;
-
- for (child = node->children; child; child = child->next) {
- xmlAttr *attr;
- if (child->type != XML_ELEMENT_NODE)
- continue;
- attr = xmlHasProp(child, (const xmlChar *) "id");
- if (attr && strcmp(id, (const char *) attr->children->content)
- == 0)
- return child;
- found = svgtiny_find_element_by_id(child, id);
- if (found)
- return found;
- }
-
- return 0;
-}
-