static gint
_calc_footer_height(GtkHTML * html, GtkPrintOperation * operation,
GtkPrintContext * context)
{
PangoContext *pango_context;
PangoFontDescription *desc;
PangoFontMetrics *metrics;
gint footer_height;
pango_context = gtk_print_context_create_pango_context(context);
desc = pango_font_description_from_string("Sans Regular 10");
metrics =
pango_context_get_metrics(pango_context, desc,
pango_language_get_default());
footer_height =
pango_font_metrics_get_ascent(metrics) +
pango_font_metrics_get_descent(metrics);
pango_font_metrics_unref(metrics);
pango_font_description_free(desc);
g_object_unref(pango_context);
return footer_height;
}
JNIEXPORT jlong JNICALL
Java_org_gnome_gtk_GtkPrintContext_gtk_1print_1context_1create_1pango_1context
(
JNIEnv* env,
jclass cls,
jlong _self
)
{
PangoContext* result;
jlong _result;
GtkPrintContext* self;
// convert parameter self
self = (GtkPrintContext*) _self;
// call function
result = gtk_print_context_create_pango_context(self);
// cleanup parameter self
// translate return value to JNI type
_result = (jlong) result;
// cleanup return value
if (result != NULL) {
bindings_java_memory_cleanup((GObject*)result, FALSE);
}
// and finally
return _result;
}
/* We don't support variable width fonts (yet) */
static gint get_font_width(GtkPrintContext *context, PangoFontDescription *desc)
{
PangoContext *pc;
PangoFontMetrics *metrics;
gint width;
pc = gtk_print_context_create_pango_context(context);
if (!utils_font_desc_check_monospace(pc, desc))
dialogs_show_msgbox_with_secondary(GTK_MESSAGE_WARNING,
_("The editor font is not a monospaced font!"),
_("Text will be wrongly spaced."));
metrics = pango_context_get_metrics(pc, desc, pango_context_get_language(pc));
/** TODO is this the best result we can get? */
/* digit and char width are mostly equal for monospace fonts, char width might be
* for dual width characters(e.g. Japanese) so use digit width to get sure we get the width
* for one character */
width = pango_font_metrics_get_approximate_digit_width(metrics) / PANGO_SCALE;
pango_font_metrics_unref(metrics);
g_object_unref(pc);
return width;
}
/*! Drawing callback for use with GtkPrintOperation. */
static void
draw_page__print_operation (GtkPrintOperation *print,
GtkPrintContext *context,
gint page_nr,
gpointer user_data)
{
GschemToplevel *w_current = (GschemToplevel *) user_data;
PAGE *page;
cairo_t *cr;
PangoContext *pc;
double width, height;
EdaConfig *cfg;
gboolean is_color;
/* Find the page data */
g_return_if_fail (page_nr != 1);
page = w_current->toplevel->page_current;
g_return_if_fail (page != NULL);
/* Get cairo & pango contexts */
cr = gtk_print_context_get_cairo_context (context);
pc = gtk_print_context_create_pango_context (context);
width = gtk_print_context_get_width (context);
height = gtk_print_context_get_height (context);
/* Find out if colour printing is enabled */
cfg = eda_config_get_context_for_path (s_page_get_filename (page));
is_color = !eda_config_get_boolean (cfg, CFG_GROUP_PRINTING,
CFG_KEY_PRINTING_MONOCHROME, NULL);
x_print_draw_page (w_current->toplevel, page, cr, pc,
width, height, is_color, FALSE);
/* Clean up */
g_object_unref (pc);
}
static VALUE
rg_create_pango_context(VALUE self)
{
return GOBJ2RVALU(gtk_print_context_create_pango_context(_SELF(self)));
}
