}
+/****************************************************************************/
+/* Render barcode to cairo context (creating a path only). */
+/****************************************************************************/
+void
+lgl_barcode_render_to_cairo_path (const lglBarcode *bc,
+ cairo_t *cr)
+{
+ GList *p;
+
+ lglBarcodeShape *shape;
+ lglBarcodeShapeLine *line;
+ lglBarcodeShapeBox *box;
+ lglBarcodeShapeChar *bchar;
+ lglBarcodeShapeString *bstring;
+ lglBarcodeShapeRing *ring;
+ lglBarcodeShapeHexagon *hexagon;
+
+ PangoLayout *layout;
+ PangoFontDescription *desc;
+ gchar *cstring;
+ gdouble x_offset, y_offset;
+ gint iw, ih;
+ gdouble layout_width;
+
+
+ for (p = bc->shapes; p != NULL; p = p->next) {
+
+ shape = (lglBarcodeShape *)p->data;
+
+ switch (shape->type)
+ {
+
+ case LGL_BARCODE_SHAPE_LINE:
+ line = (lglBarcodeShapeLine *) shape;
+
+ cairo_rectangle (cr, line->x - line->width/2, line->y, line->width, line->length);
+
+ break;
+
+ case LGL_BARCODE_SHAPE_BOX:
+ box = (lglBarcodeShapeBox *) shape;
+
+ cairo_rectangle (cr, box->x, box->y, box->width, box->height);
+
+ break;
+
+ case LGL_BARCODE_SHAPE_CHAR:
+ bchar = (lglBarcodeShapeChar *) shape;
+
+ layout = pango_cairo_create_layout (cr);
+
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, BARCODE_FONT_FAMILY);
+ pango_font_description_set_size (desc, bchar->fsize * PANGO_SCALE * FONT_SCALE);
+ pango_layout_set_font_description (layout, desc);
+ pango_font_description_free (desc);
+
+ cstring = g_strdup_printf ("%c", bchar->c);
+ pango_layout_set_text (layout, cstring, -1);
+ g_free (cstring);
+
+ y_offset = 0.2 * bchar->fsize;
+
+ cairo_move_to (cr, bchar->x, bchar->y-y_offset);
+ pango_cairo_layout_path (cr, layout);
+
+ g_object_unref (layout);
+
+ break;
+
+ case LGL_BARCODE_SHAPE_STRING:
+ bstring = (lglBarcodeShapeString *) shape;
+
+ layout = pango_cairo_create_layout (cr);
+
+ desc = pango_font_description_new ();
+ pango_font_description_set_family (desc, 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->string, -1);
+
+ pango_layout_get_size (layout, &iw, &ih);
+ layout_width = (gdouble)iw / (gdouble)PANGO_SCALE;
+
+ x_offset = layout_width / 2.0;
+ y_offset = 0.2 * bstring->fsize;
+
+ cairo_move_to (cr, (bstring->x - x_offset), (bstring->y - y_offset));
+ pango_cairo_layout_path (cr, layout);
+
+ g_object_unref (layout);
+
+ break;
+
+ case LGL_BARCODE_SHAPE_RING:
+ ring = (lglBarcodeShapeRing *) shape;
+
+ cairo_new_sub_path (cr);
+ cairo_arc (cr, ring->x, ring->y, ring->radius + ring->line_width/2, 0.0, 2 * M_PI);
+ cairo_close_path (cr);
+ cairo_new_sub_path (cr);
+ cairo_arc (cr, ring->x, ring->y, ring->radius - ring->line_width/2, 0.0, 2 * M_PI);
+ cairo_close_path (cr);
+ break;
+
+ case LGL_BARCODE_SHAPE_HEXAGON:
+ hexagon = (lglBarcodeShapeHexagon *) shape;
+
+ cairo_move_to (cr, hexagon->x, hexagon->y);
+ cairo_line_to (cr, hexagon->x + 0.433*hexagon->height, hexagon->y + 0.25*hexagon->height);
+ cairo_line_to (cr, hexagon->x + 0.433*hexagon->height, hexagon->y + 0.75*hexagon->height);
+ cairo_line_to (cr, hexagon->x, hexagon->y + hexagon->height);
+ cairo_line_to (cr, hexagon->x - 0.433*hexagon->height, hexagon->y + 0.75*hexagon->height);
+ cairo_line_to (cr, hexagon->x - 0.433*hexagon->height, hexagon->y + 0.25*hexagon->height);
+ cairo_close_path (cr);
+ break;
+
+ default:
+ g_assert_not_reached ();
+ break;
+
+ }
+
+ }
+
+}
+
+
/*
* Local Variables: -- emacs
#define GL_BARCODE_FONT_FAMILY "Sans"
+#define HANDLE_OUTLINE_RGBA_ARGS 0.5, 0.5, 0.5, 0.75
+#define HANDLE_OUTLINE_WIDTH_PIXELS 2.0
+
/*========================================================*/
/* Private types. */
gdouble x_pixels,
gdouble y_pixels);
+static void draw_handles (glLabelObject *object,
+ cairo_t *cr);
+
/*****************************************************************************/
/* Boilerplate object stuff. */
label_object_class->draw_object = draw_object;
label_object_class->draw_shadow = NULL;
label_object_class->object_at = object_at;
+ label_object_class->draw_handles = draw_handles;
object_class->finalize = gl_label_barcode_finalize;
}
gl_label_object_get_size (object, &w, &h);
- text_node = gl_label_barcode_get_data(GL_LABEL_BARCODE(object));
text = gl_text_node_expand (text_node, record);
if (text_node->field_flag && screen_flag) {
text = gl_barcode_backends_style_default_digits (style->backend_id, style->id, style->format_digits);
gdouble x,
gdouble y)
{
- gdouble w, h;
+ gdouble w, h;
+ lglBarcode *gbc;
+ glLabelBarcodeStyle *style;
+ glTextNode *text_node;
+ gchar *text;
gl_label_object_get_size (object, &w, &h);
- cairo_new_path (cr);
- cairo_rectangle (cr, 0.0, 0.0, w, h);
+ if ( (x >= 0) && (x <= w) && (y >= 0) && (y <= h) )
+ {
+
+ style = gl_label_barcode_get_style (GL_LABEL_BARCODE (object));
+ text_node = gl_label_barcode_get_data(GL_LABEL_BARCODE(object));
+ text = gl_text_node_expand (text_node, NULL);
+ if (text_node->field_flag) {
+ text = gl_barcode_backends_style_default_digits (style->backend_id, style->id, style->format_digits);
+ }
+ gbc = gl_barcode_backends_new_barcode (style->backend_id,
+ style->id,
+ style->text_flag,
+ style->checksum_flag,
+ w, h,
+ text);
+ if ( gbc )
+ {
+ lgl_barcode_render_to_cairo_path (gbc, cr);
+ lgl_barcode_free (gbc);
+ }
+
+ if (cairo_in_fill (cr, x, y))
+ {
+ return TRUE;
+ }
+
+ }
- if (cairo_in_fill (cr, x, y))
+ if (gl_label_object_is_selected (object))
{
- return TRUE;
+ cairo_new_path (cr);
+ cairo_rectangle (cr, 0, 0, w, h);
+ if (cairo_in_stroke (cr, x, y))
+ {
+ return TRUE;
+ }
}
return FALSE;
}
+/*****************************************************************************/
+/* Draw barcode style handles. */
+/*****************************************************************************/
+static void
+draw_handles (glLabelObject *object,
+ cairo_t *cr)
+{
+ gdouble w, h;
+ gdouble scale_x, scale_y;
+ gdouble dashes[2] = { 2, 2 };
+
+ gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
+
+ cairo_save (cr);
+
+ cairo_rectangle (cr, 0, 0, w, h);
+
+ scale_x = 1.0;
+ scale_y = 1.0;
+ cairo_device_to_user_distance (cr, &scale_x, &scale_y);
+ cairo_scale (cr, scale_x, scale_y);
+
+ cairo_set_dash (cr, dashes, 2, 0);
+ cairo_set_line_width (cr, HANDLE_OUTLINE_WIDTH_PIXELS);
+ cairo_set_source_rgba (cr, HANDLE_OUTLINE_RGBA_ARGS);
+ cairo_stroke (cr);
+
+ cairo_restore (cr);
+
+ gl_label_object_draw_handles_box (object, cr);
+}
+
+
/*****************************************************************************/
/* Barcode style utilities. */
/*****************************************************************************/
projects / glabels / commitdiff