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// 13 august 2014
#include "uipriv_unix.h"
#define uipParentType (uipParent_get_type())
#define uipParent(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), uipParentType, uipParent))
#define uipIsParent(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), uipParentType))
#define uipParentClass(class) (G_TYPE_CHECK_CLASS_CAST((class), uipParentType, uipParentClass))
#define uipIsParentClass(class) (G_TYPE_CHECK_CLASS_TYPE((class), uipParent))
#define uipGetParentClass(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), uipParentType, uipParentClass))
typedef struct uipParent uipParent;
typedef struct uipParentClass uipParentClass;
struct uipParent {
GtkContainer parent_instance;
// this is what triggers the resizing of all the children
uiControl *child;
// these are the actual children widgets of the container as far as GTK+ is concerned
GPtrArray *children; // for forall()
intmax_t marginLeft;
intmax_t marginTop;
intmax_t marginRight;
intmax_t marginBottom;
};
struct uipParentClass {
GtkContainerClass parent_class;
};
G_DEFINE_TYPE(uipParent, uipParent, GTK_TYPE_CONTAINER)
static void uipParent_init(uipParent *p)
{
if (options.debugLogAllocations)
fprintf(stderr, "%p alloc uipParent\n", p);
p->children = g_ptr_array_new();
gtk_widget_set_has_window(GTK_WIDGET(c), FALSE);
}
// instead of having GtkContainer itself unref all our controls, we'll run our own uiControlDestroy() functions for child, which will do that and more
// we still chain up because we need to, but by that point there will be no children for GtkContainer to free
static void uipParent_dispose(GObject *obj)
{
uipParent *p = uipParent(obj);
if (p->children != NULL) {
g_ptr_array_unref(c->children);
p->children = NULL;
}
if (p->child != NULL) {
uiControlDestroy(c->child);
p->child = NULL;
}
G_OBJECT_CLASS(uipParent_parent_class)->dispose(obj);
}
static void uipParent_finalize(GObject *obj)
{
G_OBJECT_CLASS(uipParent_parent_class)->finalize(obj);
if (options.debugLogAllocations)
fprintf(stderr, "%p free\n", obj);
}
static void uipParent_add(GtkContainer *container, GtkWidget *widget)
{
uipParent *p = uipParent(container);
gtk_widget_set_parent(widget, GTK_WIDGET(c));
if (p->children != NULL)
g_ptr_array_add(p->children, widget);
}
static void uipParent_remove(GtkContainer *container, GtkWidget *widget)
{
uipParent *p = uipParent(container);
gtk_widget_unparent(widget);
if (p->children != NULL)
g_ptr_array_remove(p->children, widget);
}
#define gtkXPadding 12
#define gtkYPadding 6
static void uipParent_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
uipParent *p = uipParent(widget);
uiSizing d;
intmax_t x, y, width, height;
gtk_widget_set_allocation(GTK_WIDGET(c), allocation);
if (c->child == NULL)
return;
x = allocation->x + p->marginLeft;
y = allocation->y + p->marginTop;
width = allocation->width - (p->marginLeft + p->marginRight);
height = allocation->height - (p->marginTop + p->marginBottom);
d.xPadding = gtkXPadding;
d.yPadding = gtkYPadding;
uiControlResize(c->child, x, y, width, height, &d);
}
struct forall {
GtkCallback callback;
gpointer data;
};
static void doforall(gpointer obj, gpointer data)
{
struct forall *s = (struct forall *) data;
(*(s->callback))(GTK_WIDGET(obj), s->data);
}
static void uipParent_forall(GtkContainer *container, gboolean includeInternals, GtkCallback callback, gpointer data)
{
uipParent *p = uipParent(container);
struct forall s;
s.callback = callback;
s.data = data;
if (p->children != NULL)
g_ptr_array_foreach(c->children, doforall, &s);
}
static void uipParent_class_init(uipParentClass *class)
{
G_OBJECT_CLASS(class)->dispose = uipParent_dispose;
G_OBJECT_CLASS(class)->finalize = uipParent_finalize;
GTK_WIDGET_CLASS(class)->size_allocate = uipParent_size_allocate;
GTK_CONTAINER_CLASS(class)->add = uipParent_add;
GTK_CONTAINER_CLASS(class)->remove = uipParent_remove;
GTK_CONTAINER_CLASS(class)->forall = uipParent_forall;
}
static uintptr_t parentHandle(uiParent *p)
{
uipParent *pp = uipParent(p->Internal);
return (uintptr_t) pp;
}
static void parentSetChild(uiParent *p, uiControl *child)
{
uipParent *pp = uipParent(p->Internal);
pp->child = child;
if (pp->child != NULL)
uiControlSetParent(child, p);
}
static void parentSetMargins(uiParent *p, intmax_t left, intmax_t top, intmax_t right, intmax_t bottom)
{
uipParent *pp = uipParent(p->Internal);
pp->marginLeft = left;
pp->marginTop = top;
pp->marginRight = right;
pp->marginBottom = bottom;
}
static void parentUpdate(uiParent *p)
{
uipParent *pp = uipParent(p->Internal);
gtk_queue_resize(GTK_WIDGET(pp));
}
uiParent *uiNewParent(uintptr_t osParent)
{
uiParent *p;
p = uiNew(uiParent);
p->Internal = g_object_new(uipParentType, NULL);
p->Handle = parentHandle;
p->SetChild = parentSetChild;
p->SetMargins = parentSetMargins;
p->Update = parentUpdate;
gtk_container_add(GTK_CONTAINER(osParent), GTK_WIDGET(p->Internal));
// and make it visible by default
gtk_widget_show_all(GTK_WIDGET(p->internal));
return p;
}
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