static void
gtk_label_layoutable_size_allocate (GtkLayoutable *layoutable,
GtkAllocation *allocation)
{
GtkLabel *label = GTK_LABEL (layoutable);
if (gtk_label_get_line_wrap (label))
{
PangoLayout *layout;
PangoRectangle rect;
/* Make it span the entire line. */
layout = gtk_label_get_layout (label);
pango_layout_set_width (layout, allocation->width * PANGO_SCALE);
pango_layout_get_extents (layout, NULL, &rect);
allocation->width = rect.width / PANGO_SCALE + label->misc.xpad * 2;
allocation->height = rect.height / PANGO_SCALE + label->misc.ypad * 2;
gtk_misc_set_alignment (&label->misc, 0.0, 0.0);
gtk_widget_size_allocate (GTK_WIDGET (label), allocation);
}
else
(gtk_label_parent_layoutable_iface->size_allocate) (layoutable, allocation);
}
static void
gtk_label_layoutable_size_request (GtkLayoutable *layoutable,
GtkRequisition *requisition)
{
GtkLabel *label = GTK_LABEL (layoutable);
if (gtk_label_get_line_wrap (label))
requisition->width = requisition->height = 0;
else
gtk_widget_size_request (GTK_WIDGET (label), requisition);
}
static gint columns_gtk3_get_nat_width(ColumnsChild *child)
{
gint ret;
if ((GTK_IS_LABEL(child->widget) &&
gtk_label_get_line_wrap(GTK_LABEL(child->widget))) ||
GTK_IS_ENTRY(child->widget)) {
/*
* We treat wrapping GtkLabels as a special case in this
* layout class, because the whole point of those is that I
* _don't_ want them to take up extra horizontal space for
* long text, but instead to wrap it to whatever size is used
* by the rest of the layout.
*
* GtkEntry gets similar treatment, because in OS X GTK I've
* found that it requests a natural width regardless of the
* output of gtk_entry_set_width_chars.
*/
gtk_widget_get_preferred_width(child->widget, &ret, NULL);
} else {
gtk_widget_get_preferred_width(child->widget, NULL, &ret);
}
return ret;
}
static gint columns_compute_width(Columns *cols, widget_dim_fn_t get_width)
{
ColumnsChild *child;
GList *children;
gint i, ncols, colspan, retwidth, childwidth;
const gint *percentages;
static const gint onecol[] = {100};
#ifdef COLUMNS_WIDTH_DIAGNOSTICS
printf("compute_width(%p): start\n", cols);
#endif
retwidth = 0;
ncols = 1;
percentages = onecol;
for (children = cols->children; children && (child = children->data);
children = children->next) {
if (!child->widget) {
/* Column reconfiguration. */
ncols = child->ncols;
percentages = child->percentages;
continue;
}
/* Only take visible widgets into account. */
if (!gtk_widget_get_visible(child->widget))
continue;
childwidth = get_width(child);
colspan = child->colspan ? child->colspan : ncols - child->colstart;
#ifdef COLUMNS_WIDTH_DIAGNOSTICS
printf("compute_width(%p): ", cols);
if (GTK_IS_LABEL(child->widget))
printf("label %p '%s' wrap=%s: ",
child->widget,
gtk_label_get_text(GTK_LABEL(child->widget)),
(gtk_label_get_line_wrap(GTK_LABEL(child->widget)) ? "TRUE"
: "FALSE"));
else
printf("widget %p: ", child->widget);
{
gint min, nat;
gtk_widget_get_preferred_width(child->widget, &min, &nat);
printf("minwidth=%d natwidth=%d ", min, nat);
}
printf("thiswidth=%d span=%d\n", childwidth, colspan);
#endif
/*
* To compute width: we know that childwidth + cols->spacing
* needs to equal a certain percentage of the full width of
* the container. So we work this value out, figure out how
* wide the container will need to be to make that percentage
* of it equal to that width, and ensure our returned width is
* at least that much. Very simple really.
*/
{
int percent, thiswid, fullwid;
percent = 0;
for (i = 0; i < colspan; i++)
percent += percentages[child->colstart + i];
thiswid = childwidth + cols->spacing;
/*
* Since childwidth is (at least sometimes) the _minimum_
* size the child needs, we must ensure that it gets _at
* least_ that size. Hence, when scaling thiswid up to
* fullwid, we must round up, which means adding percent-1
* before dividing by percent.
*/
fullwid = (thiswid * 100 + percent - 1) / percent;
#ifdef COLUMNS_WIDTH_DIAGNOSTICS
printf("compute_width(%p): after %p, thiswid=%d fullwid=%d\n",
cols,
child->widget,
thiswid,
fullwid);
#endif
/*
* The above calculation assumes every widget gets
* cols->spacing on the right. So we subtract
* cols->spacing here to account for the extra load of
* spacing on the right.
*/
if (retwidth < fullwid - cols->spacing)
retwidth = fullwid - cols->spacing;
}
}
retwidth += 2 * gtk_container_get_border_width(GTK_CONTAINER(cols));
#ifdef COLUMNS_WIDTH_DIAGNOSTICS
printf("compute_width(%p): done, returning %d\n", cols, retwidth);
#endif
return retwidth;
}
Php::Value GtkLabel_::get_line_wrap()
{
gboolean ret = gtk_label_get_line_wrap (GTK_LABEL(instance));
return ret;
}
