/* split a text buffer into chunks using the passed Pango layout */
GList *
split_for_layout(PangoLayout * layout, const gchar * text,
PangoAttrList * attributes, BalsaPrintSetup * psetup,
gboolean is_header, GArray ** offsets)
{
GList *split_list = NULL;
PangoLayoutIter *iter;
const gchar *start;
gint p_offset;
gboolean add_tab;
gint p_y0;
gint p_y1;
gint p_y_pos;
gint p_height;
/* set the text and its attributes, then get an iter */
pango_layout_set_text(layout, text, -1);
if (attributes)
pango_layout_set_attributes(layout, attributes);
if (offsets)
*offsets = g_array_new(FALSE, FALSE, sizeof(guint));
iter = pango_layout_get_iter(layout);
/* loop over lines */
start = text;
p_offset = 0;
add_tab = FALSE;
p_y_pos = C_TO_P(psetup->c_y_pos);
p_height = C_TO_P(psetup->c_height);
do {
pango_layout_iter_get_line_yrange(iter, &p_y0, &p_y1);
if (p_y_pos + p_y1 - p_offset > p_height) {
gint index;
gint tr;
gchar *chunk;
gboolean ends_with_nl;
if (offsets) {
guint offs = start - text;
*offsets = g_array_append_val(*offsets, offs);
}
pango_layout_xy_to_index(layout, 0, p_y0, &index, &tr);
ends_with_nl = text[index - 1] == '\n';
if (ends_with_nl)
index--;
chunk = g_strndup(start, text + index - start);
if (add_tab)
split_list =
g_list_append(split_list,
g_strconcat("\t", chunk, NULL));
else
split_list = g_list_append(split_list, g_strdup(chunk));
add_tab = is_header && !ends_with_nl;
g_free(chunk);
start = text + index;
if (ends_with_nl)
start++;
if (*start == '\0')
p_y_pos = p_height;
else {
p_y_pos = 0;
psetup->page_count++;
}
p_offset = p_y0;
}
} while (pango_layout_iter_next_line(iter));
pango_layout_iter_free(iter);
/* append any remaining stuff */
if (*start != '\0') {
p_y_pos += p_y1 - p_offset;
if (offsets) {
guint offs = start - text;
*offsets = g_array_append_val(*offsets, offs);
}
if (add_tab)
split_list =
g_list_append(split_list, g_strconcat("\t", start, NULL));
else
split_list = g_list_append(split_list, g_strdup(start));
}
/* remember the new y position in cairo units */
psetup->c_y_pos = P_TO_C(p_y_pos);
/* return the list */
return split_list;
}
GList *
balsa_print_object_default(GList * list,
GtkPrintContext * context,
LibBalsaMessageBody * body,
BalsaPrintSetup * psetup)
{
BalsaPrintObjectDefault *pod;
BalsaPrintObject *po;
gchar *conttype;
PangoFontDescription *header_font;
PangoLayout *test_layout;
PangoTabArray *tabs;
GString *desc_buf;
gdouble c_max_height;
gchar *part_desc;
pod = g_object_new(BALSA_TYPE_PRINT_OBJECT_DEFAULT, NULL);
g_assert(pod != NULL);
po = BALSA_PRINT_OBJECT(pod);
/* create the part */
po->depth = psetup->curr_depth;
po->c_width =
psetup->c_width - 2 * psetup->curr_depth * C_LABEL_SEP;
/* get a pixbuf according to the mime type */
conttype = libbalsa_message_body_get_mime_type(body);
pod->pixbuf =
libbalsa_icon_finder(NULL, conttype, NULL, NULL,
GTK_ICON_SIZE_DND);
pod->c_image_width = gdk_pixbuf_get_width(pod->pixbuf);
pod->c_image_height = gdk_pixbuf_get_height(pod->pixbuf);
/* create a layout for calculating the maximum label width */
header_font =
pango_font_description_from_string(balsa_app.print_header_font);
test_layout = gtk_print_context_create_pango_layout(context);
pango_layout_set_font_description(test_layout, header_font);
pango_font_description_free(header_font);
desc_buf = g_string_new("");
/* add type and filename (if available) */
pod->p_label_width =
p_string_width_from_layout(test_layout, _("Type:"));
if ((part_desc = libbalsa_vfs_content_description(conttype)))
g_string_append_printf(desc_buf, "%s\t%s (%s)", _("Type:"),
part_desc, conttype);
else
g_string_append_printf(desc_buf, "%s\t%s", _("Type:"), conttype);
g_free(part_desc);
g_free(conttype);
if (body->filename) {
gint p_fnwidth =
p_string_width_from_layout(test_layout, _("File name:"));
if (p_fnwidth > pod->p_label_width)
pod->p_label_width = p_fnwidth;
g_string_append_printf(desc_buf, "\n%s\t%s", _("File name:"),
body->filename);
}
/* add a small space between label and value */
pod->p_label_width += C_TO_P(C_LABEL_SEP);
/* configure the layout so we can calculate the text height */
pango_layout_set_indent(test_layout, -pod->p_label_width);
tabs =
pango_tab_array_new_with_positions(1, FALSE, PANGO_TAB_LEFT,
pod->p_label_width);
pango_layout_set_tabs(test_layout, tabs);
pango_tab_array_free(tabs);
pango_layout_set_width(test_layout,
C_TO_P(po->c_width -
4 * C_LABEL_SEP - pod->c_image_width));
pango_layout_set_alignment(test_layout, PANGO_ALIGN_LEFT);
pod->c_text_height =
P_TO_C(p_string_height_from_layout(test_layout, desc_buf->str));
pod->description = g_string_free(desc_buf, FALSE);
/* check if we should move to the next page */
c_max_height = MAX(pod->c_text_height, pod->c_image_height);
if (psetup->c_y_pos + c_max_height > psetup->c_height) {
psetup->c_y_pos = 0;
psetup->page_count++;
}
/* remember the extent */
po->on_page = psetup->page_count - 1;
po->c_at_x = psetup->c_x0 + po->depth * C_LABEL_SEP;
po->c_at_y = psetup->c_y0 + psetup->c_y_pos;
po->c_width = psetup->c_width - 2 * po->depth * C_LABEL_SEP;
po->c_height = c_max_height;
/* adjust the y position */
psetup->c_y_pos += c_max_height;
return g_list_append(list, po);
}
