* internal Zint code to convert directly to glBarcode representation.
*
*--------------------------------------------------------------------------*/
-static glBarcode *render_zint(struct zint_symbol *symbol, gboolean text_flag) {
+static glBarcode *render_zint(struct zint_symbol *symbol, gboolean text_flag)
+{
+ glBarcode *gbc;
+ glBarcodeShapeBox *box;
+ glBarcodeShapeString *bstring;
- int i;
- double string_offset, x;
+ struct zint_render *render;
+ struct zint_render_line *zline;
+ struct zint_render_string *zstring;
- glBarcode *gbc;
- glBarcodeShapeLine *line;
- glBarcodeShapeAlpha *bchar;
-
- struct zint_render *render;
- struct zint_render_line *zline;
- struct zint_render_string *zstring;
- render = symbol->rendered;
- gbc = g_new0(glBarcode, 1);
-
+ render = symbol->rendered;
+ gbc = g_new0(glBarcode, 1);
- for ( zline = render->lines; zline != NULL; zline = zline->next ) {
- line = gl_barcode_shape_line_new ();
+ for ( zline = render->lines; zline != NULL; zline = zline->next )
+ {
+ box = gl_barcode_shape_box_new ();
- line->width = (double) zline->width;
- line->length = (double) zline->length;
- /* glBarcodeLine centers based on width, counter-act!!! */
- line->x = (double) (zline->x + (zline->width / 2.0));
- line->y = (double) zline->y;
+ box->x = (gdouble) zline->x;
+ box->y = (gdouble) zline->y;
+ box->width = (gdouble) zline->width;
+ box->height = (gdouble) zline->length;
- gl_barcode_add_shape (gbc, (glBarcodeShape *)line);
- }
+ gl_barcode_add_shape (gbc, (glBarcodeShape *)box);
+ }
/*
* Repeat loop for characters
*/
- if(text_flag) {
- for ( zstring = render->strings; zstring != NULL; zstring = zstring->next ) {
- string_offset = (double) zstring->x - (((6.0 / 9.0) * zstring->length * zstring->fsize) / 2);
- for(i = 0; i < zstring->length; i++) {
- x = 0.0;
- // Poor man's kerning
- if (zstring->text[i] == '(') { x = 0.18; }
- bchar = gl_barcode_shape_alpha_new();
- bchar->x = (double) string_offset + ((((6.0 / 9.0) * i) + x) * zstring->fsize);
- bchar->y = (double) zstring->y;
- bchar->fsize = (double) zstring->fsize;
- bchar->c = (char) zstring->text[i];
- gl_barcode_add_shape (gbc, (glBarcodeShape *)bchar);
- }
- }
- }
+ if(text_flag)
+ {
+ for ( zstring = render->strings; zstring != NULL; zstring = zstring->next )
+ {
+ bstring = gl_barcode_shape_string_new();
+ bstring->x = (double) zstring->x - (((6.0 / 9.0) * zstring->length * zstring->fsize) / 2);
+ bstring->y = (double) zstring->y;
+ bstring->fsize = (double) zstring->fsize;
+ bstring->str = g_strndup (zstring->text, zstring->length);
+ gl_barcode_add_shape (gbc, (glBarcodeShape *)bstring);
+ }
+ }
- /*
- * Finally add complete sizes
- */
- gbc->width = (gdouble) render->width;
- gbc->height = (gdouble) render->height;
+ /*
+ * Finally add complete sizes
+ */
+ gbc->width = (gdouble) render->width;
+ gbc->height = (gdouble) render->height;
- return gbc;
+ return gbc;
}
#endif /* HAVE_LIBZINT */
}
+/*****************************************************************************/
+/* Allocate new Box shape. */
+/*****************************************************************************/
+glBarcodeShapeBox *
+gl_barcode_shape_box_new (void)
+{
+ glBarcodeShapeBox *box_shape = g_new0 (glBarcodeShapeBox, 1);
+ box_shape->type = GL_BARCODE_SHAPE_BOX;
+
+ return box_shape;
+}
+
+
/*****************************************************************************/
/* Allocate new Alpha shape. */
/*****************************************************************************/
}
+/*****************************************************************************/
+/* Allocate new String shape. */
+/*****************************************************************************/
+glBarcodeShapeString *
+gl_barcode_shape_string_new (void)
+{
+ glBarcodeShapeString *string_shape = g_new0 (glBarcodeShapeString, 1);
+ string_shape->type = GL_BARCODE_SHAPE_STRING;
+
+ return string_shape;
+}
+
+
+/*****************************************************************************/
+/* Free a shape primitive. */
+/*****************************************************************************/
+void
+gl_barcode_shape_free (glBarcodeShape *shape)
+{
+ switch (shape->type)
+ {
+
+ case GL_BARCODE_SHAPE_STRING:
+ g_free (shape->string.str);
+ break;
+
+ default:
+ break;
+ }
+
+ g_free (shape);
+}
+
+
/*****************************************************************************/
/* Call appropriate barcode backend to create barcode in intermediate format.*/
/*****************************************************************************/
if (*gbc != NULL) {
for (p = (*gbc)->shapes; p != NULL; p = p->next) {
- g_free (p->data);
+ gl_barcode_shape_free ((glBarcodeShape *)p->data);
p->data = NULL;
}
g_list_free ((*gbc)->shapes);
/*
* bc.h
- * Copyright (C) 2001-2009 Jim Evins <evins@snaught.com>.
+ * Copyright (C) 2001-2010 Jim Evins <evins@snaught.com>.
*
* This file is part of gLabels.
*
G_BEGIN_DECLS
+
+#define GL_BARCODE_FONT_FAMILY "Sans"
+#define GL_BARCODE_FONT_WEIGHT PANGO_WEIGHT_NORMAL
+
+
+/*******************************/
+/* Barcode Drawing Primitives. */
+/*******************************/
+
typedef enum {
GL_BARCODE_SHAPE_LINE,
+ GL_BARCODE_SHAPE_BOX,
GL_BARCODE_SHAPE_ALPHA,
+ GL_BARCODE_SHAPE_STRING,
} glBarcodeShapeType;
typedef struct {
} glBarcodeShapeLine;
+/*
+ * glBarcodeShapeBox:
+ *
+ * @ = origin (x,y) from top left corner of barcode
+ *
+ * @---------+
+ * | |
+ * | |
+ * | |
+ * | | height
+ * | |
+ * | |
+ * | |
+ * +---------+
+ * width
+ */
+typedef struct {
+
+ /* Begin Common Fields */
+ glBarcodeShapeType type; /* Always GL_BARCODE_SHAPE_LINE. */
+ gdouble x;
+ gdouble y;
+ /* End Common Fields */
+
+ gdouble width;
+ gdouble height;
+
+} glBarcodeShapeBox;
+
/*
* glBarcodeShapeAlpha:
*
} glBarcodeShapeAlpha;
+/*
+ * glBarcodeShapeString:
+ *
+ * @ = origin (x,y) from top left corner of barcode
+ *
+ * ____ _ ------------------
+ * / \ | | ^
+ * / /\ \ | | |
+ * / /__\ \ | |___ ____ |
+ * / ______ \ | ._ \ / __| | ~fsize
+ * / / \ \ | |_) | | (__ |
+ * /__/ \__\ |_.___/ \____| |
+ * v
+ * @ --------------------------------------
+ */
+typedef struct {
+
+ /* Begin Common Fields */
+ glBarcodeShapeType type; /* Always GL_BARCODE_SHAPE_ALPHA. */
+ gdouble x;
+ gdouble y;
+ /* End Common Fields */
+
+ gdouble fsize;
+ gchar *str;
+
+} glBarcodeShapeString;
+
typedef union {
glBarcodeShapeType type;
glBarcodeShapeAny any;
glBarcodeShapeLine line;
+ glBarcodeShapeBox box;
glBarcodeShapeAlpha alpha;
+ glBarcodeShapeString string;
} glBarcodeShape;
-typedef struct {
- gdouble width, height;
- GList *shapes; /* List of glBarcodeShape */
-} glBarcode;
+glBarcodeShapeLine *gl_barcode_shape_line_new (void);
+glBarcodeShapeBox *gl_barcode_shape_box_new (void);
+glBarcodeShapeAlpha *gl_barcode_shape_alpha_new (void);
+glBarcodeShapeString *gl_barcode_shape_string_new (void);
-typedef glBarcode *(*glBarcodeNewFunc) (const gchar *id,
- gboolean text_flag,
- gboolean checksum_flag,
- gdouble w,
- gdouble h,
- const gchar *digits);
+void gl_barcode_shape_free (glBarcodeShape *shape);
-#define GL_BARCODE_FONT_FAMILY "Sans"
-#define GL_BARCODE_FONT_WEIGHT PANGO_WEIGHT_NORMAL
+/********************************/
+/* Barcode Intermediate Format. */
+/********************************/
+typedef struct {
+ gdouble width, height;
+ GList *shapes; /* List of glBarcodeShape */
+} glBarcode;
+
+typedef glBarcode *(*glBarcodeNewFunc) (const gchar *id,
+ gboolean text_flag,
+ gboolean checksum_flag,
+ gdouble w,
+ gdouble h,
+ const gchar *digits);
-glBarcodeShapeLine *gl_barcode_shape_line_new (void);
-glBarcodeShapeAlpha *gl_barcode_shape_alpha_new (void);
glBarcode *gl_barcode_new (const gchar *id,
- gboolean text_flag,
- gboolean checksum_flag,
- gdouble w,
- gdouble h,
- const gchar *digits);
+ gboolean text_flag,
+ gboolean checksum_flag,
+ gdouble w,
+ gdouble h,
+ const gchar *digits);
void gl_barcode_free (glBarcode **bc);
void gl_barcode_free_styles_list (GList *styles_list);
gchar *gl_barcode_default_digits (const gchar *id,
- guint n);
+ guint n);
gboolean gl_barcode_can_text (const gchar *id);
gboolean gl_barcode_text_optional (const gchar *id);
const gchar *gl_barcode_id_to_name (const gchar *id);
const gchar *gl_barcode_name_to_id (const gchar *name);
+
G_END_DECLS
#endif /* __BC_H__ */
glBarcode *gbc;
glBarcodeShape *shape;
glBarcodeShapeLine *line;
+ glBarcodeShapeBox *box;
glBarcodeShapeAlpha *bchar;
+ glBarcodeShapeString *bstring;
GList *p;
gdouble y_offset;
PangoLayout *layout;
break;
+ case GL_BARCODE_SHAPE_BOX:
+ box = (glBarcodeShapeBox *) shape;
+
+ cairo_rectangle (cr, box->x, box->y, box->width, box->height);
+ cairo_fill (cr);
+
+ break;
+
case GL_BARCODE_SHAPE_ALPHA:
bchar = (glBarcodeShapeAlpha *) shape;
break;
+ case GL_BARCODE_SHAPE_STRING:
+ bstring = (glBarcodeShapeString *) shape;
+
+ layout = pango_cairo_create_layout (cr);
+
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, GL_BARCODE_FONT_FAMILY);
+ pango_font_description_set_size (desc, bstring->fsize * PANGO_SCALE * FONT_SCALE);
+ pango_layout_set_font_description (layout, desc);
+ pango_font_description_free (desc);
+
+ pango_layout_set_text (layout, bstring->str, -1);
+
+ y_offset = 0.2 * bstring->fsize;
+
+ cairo_move_to (cr, bstring->x, bstring->y-y_offset);
+ pango_cairo_show_layout (cr, layout);
+
+ g_object_unref (layout);
+
+ break;
+
default:
g_assert_not_reached ();
break;
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