static void
gtk_form_position_children(GtkForm *form)
{
GList *tmp_list;
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
gtk_form_position_child(form, tmp_list->data, FALSE);
}
static void
gtk_form_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
GList *tmp_list;
GtkForm *form;
gboolean need_reposition;
GtkAllocation cur_alloc;
g_return_if_fail(GTK_IS_FORM(widget));
gtk_widget_get_allocation(widget, &cur_alloc);
if (cur_alloc.x == allocation->x
&& cur_alloc.y == allocation->y
&& cur_alloc.width == allocation->width
&& cur_alloc.height == allocation->height)
return;
need_reposition = cur_alloc.width != allocation->width
|| cur_alloc.height != allocation->height;
form = GTK_FORM(widget);
if (need_reposition)
{
tmp_list = form->children;
while (tmp_list)
{
GtkFormChild *child = tmp_list->data;
gtk_form_position_child(form, child, TRUE);
tmp_list = tmp_list->next;
}
}
if (gtk_widget_get_realized(widget))
{
gdk_window_move_resize(gtk_widget_get_window(widget),
allocation->x, allocation->y,
allocation->width, allocation->height);
gdk_window_move_resize(GTK_FORM(widget)->bin_window,
0, 0,
allocation->width, allocation->height);
}
gtk_widget_set_allocation(widget, allocation);
if (need_reposition)
gtk_form_send_configure(form);
}
static void
gtk_form_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
GList *tmp_list;
GtkForm *form;
gboolean need_reposition;
g_return_if_fail(GTK_IS_FORM(widget));
if (widget->allocation.x == allocation->x
&& widget->allocation.y == allocation->y
&& widget->allocation.width == allocation->width
&& widget->allocation.height == allocation->height)
return;
need_reposition = widget->allocation.width != allocation->width
|| widget->allocation.height != allocation->height;
form = GTK_FORM(widget);
if (need_reposition)
{
tmp_list = form->children;
while (tmp_list)
{
GtkFormChild *child = tmp_list->data;
gtk_form_position_child(form, child, TRUE);
tmp_list = tmp_list->next;
}
}
if (GTK_WIDGET_REALIZED(widget))
{
gdk_window_move_resize(widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gdk_window_move_resize(GTK_FORM(widget)->bin_window,
0, 0,
allocation->width, allocation->height);
}
widget->allocation = *allocation;
if (need_reposition)
gtk_form_send_configure(form);
}
void
gtk_form_put(GtkForm *form,
GtkWidget *child_widget,
gint x,
gint y)
{
GtkFormChild *child;
g_return_if_fail(GTK_IS_FORM(form));
/* LINTED: avoid warning: conversion to 'unsigned long' */
child = g_new(GtkFormChild, 1);
if (child == NULL)
return;
child->widget = child_widget;
child->window = NULL;
child->x = x;
child->y = y;
#if GTK_CHECK_VERSION(3,0,0)
gtk_widget_set_size_request(child->widget, -1, -1);
#else
child->widget->requisition.width = 0;
child->widget->requisition.height = 0;
#endif
child->mapped = FALSE;
form->children = g_list_append(form->children, child);
/* child->window must be created and attached to the widget _before_
* it has been realized, or else things will break with GTK2. Note
* that gtk_widget_set_parent() realizes the widget if it's visible
* and its parent is mapped.
*/
if (gtk_widget_get_realized(GTK_WIDGET(form)))
gtk_form_attach_child_window(form, child);
gtk_widget_set_parent(child_widget, GTK_WIDGET(form));
if (gtk_widget_get_realized(GTK_WIDGET(form))
&& !gtk_widget_get_realized(child_widget))
gtk_form_realize_child(form, child);
gtk_form_position_child(form, child, TRUE);
}
void
gtk_form_move(GtkForm *form,
GtkWidget *child_widget,
gint x,
gint y)
{
GList *tmp_list;
GtkFormChild *child;
g_return_if_fail(GTK_IS_FORM(form));
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
child = tmp_list->data;
if (child->widget == child_widget)
{
child->x = x;
child->y = y;
gtk_form_position_child(form, child, TRUE);
return;
}
}
}
static gboolean
gtk_form_draw(GtkWidget *widget, cairo_t *cr)
{
GList *tmp_list = NULL;
GtkForm *form = NULL;
g_return_val_if_fail(GTK_IS_FORM(widget), FALSE);
gtk_form_render_background(widget, cr);
form = GTK_FORM(widget);
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
GtkFormChild * const formchild = tmp_list->data;
if (!gtk_widget_get_has_window(formchild->widget) &&
gtk_cairo_should_draw_window(cr, formchild->window))
{
/* To get gtk_widget_draw() to work, it is required to call
* gtk_widget_size_allocate() in advance with a well-posed
* allocation for a given child widget in order to set a
* certain private GtkWidget variable, called
* widget->priv->alloc_need, to the proper value; otherwise,
* gtk_widget_draw() fails and the relevant scrollbar won't
* appear on the screen.
*
* Calling gtk_form_position_child() like this is one of ways
* to make sure of that. */
gtk_form_position_child(form, formchild, TRUE);
gtk_form_render_background(formchild->widget, cr);
}
}
return GTK_WIDGET_CLASS(gtk_form_parent_class)->draw(widget, cr);
}