sp-glyph-kerning.cpp revision 1f29ece7a5be5230692c25ff5132d46b20dcd692
#define __SP_ANCHOR_C__
/*
* SVG <hkern> and <vkern> elements implementation
* W3C SVG 1.1 spec, page 476, section 20.7
*
* Author:
* Felipe C. da S. Sanches <felipe.sanches@gmail.com>
*
* Copyright (C) 2008, Felipe C. da S. Sanches
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "xml/repr.h"
#include "attributes.h"
#include "sp-glyph-kerning.h"
#include "document.h"
#include "helper-fns.h"
static void sp_glyph_kerning_class_init(SPGlyphKerningClass *gc);
static void sp_glyph_kerning_init(SPGlyphKerning *glyph);
static void sp_glyph_kerning_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
static void sp_glyph_kerning_release(SPObject *object);
static void sp_glyph_kerning_set(SPObject *object, unsigned int key, const gchar *value);
static Inkscape::XML::Node *sp_glyph_kerning_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
static void sp_glyph_kerning_update(SPObject *object, SPCtx *ctx, guint flags);
static SPObjectClass *parent_class;
GType sp_glyph_kerning_h_get_type(void)
{
static GType type = 0;
if (!type) {
GTypeInfo info = {
sizeof(SPGlyphKerningClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) sp_glyph_kerning_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(SPHkern),
16, /* n_preallocs */
(GInstanceInitFunc) sp_glyph_kerning_init,
NULL, /* value_table */
};
type = g_type_register_static(SP_TYPE_OBJECT, "SPHkern", &info, (GTypeFlags) 0);
}
return type;
}
GType sp_glyph_kerning_v_get_type(void)
{
static GType type = 0;
if (!type) {
GTypeInfo info = {
sizeof(SPGlyphKerningClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) sp_glyph_kerning_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof(SPVkern),
16, /* n_preallocs */
(GInstanceInitFunc) sp_glyph_kerning_init,
NULL, /* value_table */
};
type = g_type_register_static(SP_TYPE_OBJECT, "SPVkern", &info, (GTypeFlags) 0);
}
return type;
}
static void sp_glyph_kerning_class_init(SPGlyphKerningClass *gc)
{
SPObjectClass *sp_object_class = (SPObjectClass *) gc;
parent_class = (SPObjectClass*)g_type_class_peek_parent(gc);
sp_object_class->build = sp_glyph_kerning_build;
sp_object_class->release = sp_glyph_kerning_release;
sp_object_class->set = sp_glyph_kerning_set;
sp_object_class->write = sp_glyph_kerning_write;
sp_object_class->update = sp_glyph_kerning_update;
}
static void sp_glyph_kerning_init(SPGlyphKerning *glyph)
{
//TODO: correct these values:
glyph->u1 = NULL;
glyph->g1 = NULL;
glyph->u2 = NULL;
glyph->g2 = NULL;
glyph->k = 0;
}
static void sp_glyph_kerning_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
{
if (((SPObjectClass *) (parent_class))->build) {
((SPObjectClass *) (parent_class))->build(object, document, repr);
}
sp_object_read_attr(object, "u1");
sp_object_read_attr(object, "g1");
sp_object_read_attr(object, "u2");
sp_object_read_attr(object, "g2");
sp_object_read_attr(object, "k");
}
static void sp_glyph_kerning_release(SPObject *object)
{
//SPGlyphKerning *glyph = SP_GLYPH_KERNING(object);
if (((SPObjectClass *) parent_class)->release) {
((SPObjectClass *) parent_class)->release(object);
}
}
static void sp_glyph_kerning_set(SPObject *object, unsigned int key, const gchar *value)
{
SPGlyphKerning * glyphkern = (SPGlyphKerning*) object; //even if it is a VKern this will work. I did it this way just to avoind warnings.
double number;
const char* tag = (SP_IS_HKERN(object) ? "hkern" : "vkern");
switch (key) {
case SP_ATTR_U1:
if (glyphkern->u1) g_free(glyphkern->u1);
glyphkern->u1 = g_strdup(value);//todo:
object->requestModified(SP_OBJECT_MODIFIED_FLAG);
g_warning("<%s>: SP_ATTR_U1: %s", tag, value);
break;
case SP_ATTR_U2:
if (glyphkern->u2) g_free(glyphkern->u2);
glyphkern->u2 = g_strdup(value);//todo:
object->requestModified(SP_OBJECT_MODIFIED_FLAG);
g_warning("<%s>: SP_ATTR_U2: %s", tag, value);
break;
case SP_ATTR_G1:
if (glyphkern->g1) g_free(glyphkern->g1);
glyphkern->g1 = g_strdup(value);//todo:
object->requestModified(SP_OBJECT_MODIFIED_FLAG);
g_warning("<%s>: SP_ATTR_G1: %s", tag, value);
break;
case SP_ATTR_G2:
if (glyphkern->g2) g_free(glyphkern->g2);
glyphkern->g2 = g_strdup(value);//todo:
object->requestModified(SP_OBJECT_MODIFIED_FLAG);
g_warning("<%s>: SP_ATTR_G2: %s", tag, value);
break;
case SP_ATTR_K:
number = helperfns_read_number(value);
if (number != glyphkern->k){
glyphkern->k = number;
g_warning("<%s>: SP_ATTR_K: %f", tag, number);
object->requestModified(SP_OBJECT_MODIFIED_FLAG);
}
break;
default:
if (((SPObjectClass *) (parent_class))->set) {
((SPObjectClass *) (parent_class))->set(object, key, value);
}
break;
}
///should free tag?
}
/**
* * Receives update notifications.
* */
static void
sp_glyph_kerning_update(SPObject *object, SPCtx *ctx, guint flags)
{
SPGlyphKerning *glyph = (SPGlyphKerning *)object;
(void)glyph;
if (flags & SP_OBJECT_MODIFIED_FLAG) {
/* do something to trigger redisplay, updates? */
sp_object_read_attr(object, "u1");
sp_object_read_attr(object, "g1");
sp_object_read_attr(object, "u2");
sp_object_read_attr(object, "g2");
sp_object_read_attr(object, "k");
}
if (((SPObjectClass *) parent_class)->update) {
((SPObjectClass *) parent_class)->update(object, ctx, flags);
}
}
#define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
static Inkscape::XML::Node *sp_glyph_kerning_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
{
// SPGlyphKerning *glyph = SP_GLYPH_KERNING(object);
if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
Inkscape::XML::Document *xml_doc = sp_document_repr_doc(SP_OBJECT_DOCUMENT(object));
repr = xml_doc->createElement("svg:glyphkerning");//fix this!
}
/* I am commenting out this part because I am not certain how does it work. I will have to study it later. Juca
repr->setAttribute("unicode", glyph->unicode);
repr->setAttribute("glyph-name", glyph->glyph_name);
repr->setAttribute("d", glyph->d);
sp_repr_set_svg_double(repr, "orientation", (double) glyph->orientation);
sp_repr_set_svg_double(repr, "arabic-form", (double) glyph->arabic_form);
repr->setAttribute("lang", glyph->lang);
sp_repr_set_svg_double(repr, "horiz-adv-x", glyph->horiz_adv_x);
sp_repr_set_svg_double(repr, "vert-origin-x", glyph->vert_origin_x);
sp_repr_set_svg_double(repr, "vert-origin-y", glyph->vert_origin_y);
sp_repr_set_svg_double(repr, "vert-adv-y", glyph->vert_adv_y);
*/
if (repr != SP_OBJECT_REPR(object)) {
COPY_ATTR(repr, object->repr, "u1");
COPY_ATTR(repr, object->repr, "g1");
COPY_ATTR(repr, object->repr, "u2");
COPY_ATTR(repr, object->repr, "g2");
COPY_ATTR(repr, object->repr, "k");
}
if (((SPObjectClass *) (parent_class))->write) {
((SPObjectClass *) (parent_class))->write(object, repr, flags);
}
return repr;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :