new file. I forgot to add it on previous commit

SVGFonts boilerplate code

(bzr r4868)

1 files changed, 211 insertions, 0 deletions

diff --git a/src/sp-font.cpp b/src/sp-font.cpp
new file mode 100644
index 000000000..006e6dfed
--- /dev/null
+++ b/src/sp-font.cpp
@@ -0,0 +1,211 @@
+#define __SP_ANCHOR_C__
+
+/*
+ * SVG <font> element implementation
+ *
+ * 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-font.h"
+#include "document.h"
+
+static void sp_font_class_init(SPFontClass *fc);
+static void sp_font_init(SPFont *font);
+
+static void sp_font_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
+static void sp_font_release(SPObject *object);
+static void sp_font_set(SPObject *object, unsigned int key, const gchar *value);
+static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+static gchar *sp_font_description(SPItem *item);
+
+static SPObjectClass *parent_class;
+
+GType sp_font_get_type(void)
+{
+    static GType type = 0;
+
+    if (!type) {
+        GTypeInfo info = {
+            sizeof(SPFontClass),
+            NULL,	/* base_init */
+            NULL,	/* base_finalize */
+            (GClassInitFunc) sp_font_class_init,
+            NULL,	/* class_finalize */
+            NULL,	/* class_data */
+            sizeof(SPFont),
+            16,	/* n_preallocs */
+            (GInstanceInitFunc) sp_font_init,
+            NULL,	/* value_table */
+        };
+        type = g_type_register_static(SP_TYPE_OBJECT, "SPFont", &info, (GTypeFlags) 0);
+    }
+
+    return type;
+}
+
+static void sp_font_class_init(SPFontClass *fc)
+{
+    SPObjectClass *sp_object_class = (SPObjectClass *) fc;
+
+    sp_object_class->build = sp_font_build;
+    sp_object_class->release = sp_font_release;
+    sp_object_class->set = sp_font_set;
+    sp_object_class->write = sp_font_write;
+}
+
+static void sp_font_init(SPFont *font)
+{
+    font->horiz_origin_x = 0;
+    font->horiz_origin_y = 0;
+    font->horiz_adv_x = 0;
+//I think we should have extra stuff here and in the set method in order to set default value as specified at http://www.w3.org/TR/SVG/fonts.html
+    font->vert_origin_x = 0;
+    font->vert_origin_y = 0;
+    font->vert_adv_y = 0;
+}
+
+static void sp_font_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, "horiz-origin-x");
+    sp_object_read_attr(object, "horiz-origin-y");
+    sp_object_read_attr(object, "horiz-adv-x");
+    sp_object_read_attr(object, "vert-origin-x");
+    sp_object_read_attr(object, "vert-origin-y");
+    sp_object_read_attr(object, "vert-adv-y");
+}
+
+static void sp_font_release(SPObject *object)
+{
+    //SPFont *font = SP_FONT(object);
+
+    if (((SPObjectClass *) parent_class)->release) {
+        ((SPObjectClass *) parent_class)->release(object);
+    }
+}
+
+//ToDo: use helper-fns.h
+inline double helperfns_read_number(gchar const *value) {
+    if (!value) return 0;
+    char *end;
+    double ret = g_ascii_strtod(value, &end);
+    if (*end) {
+        g_warning("Unable to convert \"%s\" to number", value);
+        // We could leave this out, too. If strtod can't convert
+        // anything, it will return zero.
+        ret = 0;
+    }
+    return ret;
+}
+
+static void sp_font_set(SPObject *object, unsigned int key, const gchar *value)
+{
+    SPFont *font = SP_FONT(object);
+    double number;
+
+    switch (key) {
+	case SP_ATTR_HORIZ_ORIGIN_X:
+            number = helperfns_read_number(value);
+            if (number != font->horiz_origin_x){
+                font->horiz_origin_x = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	case SP_ATTR_HORIZ_ORIGIN_Y:
+            number = helperfns_read_number(value);
+            if (number != font->horiz_origin_y){
+                font->horiz_origin_y = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	case SP_ATTR_HORIZ_ADV_X:
+            number = helperfns_read_number(value);
+            if (number != font->horiz_adv_x){
+                font->horiz_adv_x = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	case SP_ATTR_VERT_ORIGIN_X:
+            number = helperfns_read_number(value);
+            if (number != font->vert_origin_x){
+                font->vert_origin_x = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	case SP_ATTR_VERT_ORIGIN_Y:
+            number = helperfns_read_number(value);
+            if (number != font->vert_origin_y){
+                font->vert_origin_y = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	case SP_ATTR_VERT_ADV_Y:
+            number = helperfns_read_number(value);
+            if (number != font->vert_adv_y){
+                font->vert_adv_y = number;
+                object->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+	default:
+            if (((SPObjectClass *) (parent_class))->set) {
+                ((SPObjectClass *) (parent_class))->set(object, key, value);
+            }
+            break;
+    }
+}
+
+#define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
+
+static Inkscape::XML::Node *sp_font_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+    SPFont *font = SP_FONT(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:font");
+    }
+
+    sp_repr_set_svg_double(repr, "horiz-origin-x", font->horiz_origin_x);
+    sp_repr_set_svg_double(repr, "horiz-origin-y", font->horiz_origin_y);
+    sp_repr_set_svg_double(repr, "horiz-adv-x", font->horiz_adv_x);
+    sp_repr_set_svg_double(repr, "vert-origin-x", font->vert_origin_x);
+    sp_repr_set_svg_double(repr, "vert-origin-y", font->vert_origin_y);
+    sp_repr_set_svg_double(repr, "vert-adv-y", font->vert_adv_y);
+
+    if (repr != SP_OBJECT_REPR(object)) {
+        COPY_ATTR(repr, object->repr, "horiz-origin-x");
+        COPY_ATTR(repr, object->repr, "horiz-origin-y");
+        COPY_ATTR(repr, object->repr, "horiz-adv-x");
+        COPY_ATTR(repr, object->repr, "vert-origin-x");
+        COPY_ATTR(repr, object->repr, "vert-origin-y");
+        COPY_ATTR(repr, object->repr, "vert-adv-y");
+    }
+
+    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 :