+++ /dev/null
-/*
- * gtkpanel.c - implementation of the `Panels' GTK layout container.
- */
-
-#include "gtkpanel.h"
-
-static void panels_init(Panels *panels);
-static void panels_class_init(PanelsClass *klass);
-static void panels_map(GtkWidget *widget);
-static void panels_unmap(GtkWidget *widget);
-static void panels_draw(GtkWidget *widget, GdkRectangle *area);
-static gint panels_expose(GtkWidget *widget, GdkEventExpose *event);
-static void panels_base_add(GtkContainer *container, GtkWidget *widget);
-static void panels_remove(GtkContainer *container, GtkWidget *widget);
-static void panels_forall(GtkContainer *container, gboolean include_internals,
- GtkCallback callback, gpointer callback_data);
-static GtkType panels_child_type(GtkContainer *container);
-static void panels_size_request(GtkWidget *widget, GtkRequisition *req);
-static void panels_size_allocate(GtkWidget *widget, GtkAllocation *alloc);
-
-static GtkContainerClass *parent_class = NULL;
-
-GtkType panels_get_type(void)
-{
- static GtkType panels_type = 0;
-
- if (!panels_type) {
- static const GtkTypeInfo panels_info = {
- "Panels",
- sizeof(Panels),
- sizeof(PanelsClass),
- (GtkClassInitFunc) panels_class_init,
- (GtkObjectInitFunc) panels_init,
- /* reserved_1 */ NULL,
- /* reserved_2 */ NULL,
- (GtkClassInitFunc) NULL,
- };
-
- panels_type = gtk_type_unique(GTK_TYPE_CONTAINER, &panels_info);
- }
-
- return panels_type;
-}
-
-static void panels_class_init(PanelsClass *klass)
-{
- GtkObjectClass *object_class;
- GtkWidgetClass *widget_class;
- GtkContainerClass *container_class;
-
- object_class = (GtkObjectClass *)klass;
- widget_class = (GtkWidgetClass *)klass;
- container_class = (GtkContainerClass *)klass;
-
- parent_class = gtk_type_class(GTK_TYPE_CONTAINER);
-
- /*
- * FIXME: do we have to do all this faffing with set_arg,
- * get_arg and child_arg_type? Ick.
- */
-
- widget_class->map = panels_map;
- widget_class->unmap = panels_unmap;
- widget_class->draw = panels_draw;
- widget_class->expose_event = panels_expose;
- widget_class->size_request = panels_size_request;
- widget_class->size_allocate = panels_size_allocate;
-
- container_class->add = panels_base_add;
- container_class->remove = panels_remove;
- container_class->forall = panels_forall;
- container_class->child_type = panels_child_type;
-}
-
-static void panels_init(Panels *panels)
-{
- GTK_WIDGET_SET_FLAGS(panels, GTK_NO_WINDOW);
-
- panels->children = NULL;
-}
-
-/*
- * These appear to be thoroughly tedious functions; the only reason
- * we have to reimplement them at all is because we defined our own
- * format for our GList of children...
- */
-static void panels_map(GtkWidget *widget)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
-
- g_return_if_fail(widget != NULL);
- g_return_if_fail(IS_PANELS(widget));
-
- panels = PANELS(widget);
- GTK_WIDGET_SET_FLAGS(panels, GTK_MAPPED);
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- if (child &&
- GTK_WIDGET_VISIBLE(child) &&
- !GTK_WIDGET_MAPPED(child))
- gtk_widget_map(child);
- }
-}
-static void panels_unmap(GtkWidget *widget)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
-
- g_return_if_fail(widget != NULL);
- g_return_if_fail(IS_PANELS(widget));
-
- panels = PANELS(widget);
- GTK_WIDGET_UNSET_FLAGS(panels, GTK_MAPPED);
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- if (child &&
- GTK_WIDGET_VISIBLE(child) &&
- GTK_WIDGET_MAPPED(child))
- gtk_widget_unmap(child);
- }
-}
-static void panels_draw(GtkWidget *widget, GdkRectangle *area)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
- GdkRectangle child_area;
-
- g_return_if_fail(widget != NULL);
- g_return_if_fail(IS_PANELS(widget));
-
- if (GTK_WIDGET_DRAWABLE(widget)) {
- panels = PANELS(widget);
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- if (child &&
- GTK_WIDGET_DRAWABLE(child) &&
- gtk_widget_intersect(child, area, &child_area))
- gtk_widget_draw(child, &child_area);
- }
- }
-}
-static gint panels_expose(GtkWidget *widget, GdkEventExpose *event)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
- GdkEventExpose child_event;
-
- g_return_val_if_fail(widget != NULL, FALSE);
- g_return_val_if_fail(IS_PANELS(widget), FALSE);
- g_return_val_if_fail(event != NULL, FALSE);
-
- if (GTK_WIDGET_DRAWABLE(widget)) {
- panels = PANELS(widget);
- child_event = *event;
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- if (child &&
- GTK_WIDGET_DRAWABLE(child) &&
- GTK_WIDGET_NO_WINDOW(child) &&
- gtk_widget_intersect(child, &event->area,
- &child_event.area))
- gtk_widget_event(child, (GdkEvent *)&child_event);
- }
- }
- return FALSE;
-}
-
-static void panels_base_add(GtkContainer *container, GtkWidget *widget)
-{
- Panels *panels;
-
- g_return_if_fail(container != NULL);
- g_return_if_fail(IS_PANELS(container));
- g_return_if_fail(widget != NULL);
-
- panels = PANELS(container);
-
- panels_add(panels, widget);
-}
-
-static void panels_remove(GtkContainer *container, GtkWidget *widget)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
- gboolean was_visible;
-
- g_return_if_fail(container != NULL);
- g_return_if_fail(IS_PANELS(container));
- g_return_if_fail(widget != NULL);
-
- panels = PANELS(container);
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- if (child != widget)
- continue;
-
- was_visible = GTK_WIDGET_VISIBLE(widget);
- gtk_widget_unparent(widget);
- panels->children = g_list_remove_link(panels->children, children);
- g_list_free(children);
- if (was_visible)
- gtk_widget_queue_resize(GTK_WIDGET(container));
- break;
- }
-}
-
-static void panels_forall(GtkContainer *container, gboolean include_internals,
- GtkCallback callback, gpointer callback_data)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children, *next;
-
- g_return_if_fail(container != NULL);
- g_return_if_fail(IS_PANELS(container));
- g_return_if_fail(callback != NULL);
-
- panels = PANELS(container);
-
- for (children = panels->children;
- children && (child = children->data);
- children = next) {
- /*
- * We can't wait until after the callback to assign
- * `children = children->next', because the callback might
- * be gtk_widget_destroy, which would remove the link
- * `children' from the list! So instead we must get our
- * hands on the value of the `next' pointer _before_ the
- * callback.
- */
- next = children->next;
- if (child)
- callback(child, callback_data);
- }
-}
-
-static GtkType panels_child_type(GtkContainer *container)
-{
- return GTK_TYPE_WIDGET;
-}
-
-GtkWidget *panels_new(void)
-{
- Panels *panels;
-
- panels = gtk_type_new(panels_get_type());
-
- return GTK_WIDGET(panels);
-}
-
-void panels_add(Panels *panels, GtkWidget *child)
-{
- g_return_if_fail(panels != NULL);
- g_return_if_fail(IS_PANELS(panels));
- g_return_if_fail(child != NULL);
- g_return_if_fail(child->parent == NULL);
-
- panels->children = g_list_append(panels->children, child);
-
- gtk_widget_set_parent(child, GTK_WIDGET(panels));
-
- if (GTK_WIDGET_REALIZED(panels))
- gtk_widget_realize(child);
-
- if (GTK_WIDGET_VISIBLE(panels)) {
- if (GTK_WIDGET_MAPPED(panels))
- gtk_widget_map(child);
- gtk_widget_queue_resize(child);
- }
-}
-
-void panels_switch_to(Panels *panels, GtkWidget *target)
-{
- GtkWidget *child = NULL;
- GList *children;
- gboolean changed = FALSE;
-
- g_return_if_fail(panels != NULL);
- g_return_if_fail(IS_PANELS(panels));
- g_return_if_fail(target != NULL);
- g_return_if_fail(target->parent == GTK_WIDGET(panels));
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
-
- if (!child)
- continue;
-
- if (child == target) {
- if (!GTK_WIDGET_VISIBLE(child)) {
- gtk_widget_show(child);
- changed = TRUE;
- }
- } else {
- if (GTK_WIDGET_VISIBLE(child)) {
- gtk_widget_hide(child);
- changed = TRUE;
- }
- }
- }
- if (changed)
- gtk_widget_queue_resize(child);
-}
-
-/*
- * Now here comes the interesting bit. The actual layout part is
- * done in the following two functions:
- *
- * panels_size_request() examines the list of widgets held in the
- * Panels, and returns a requisition stating the absolute minimum
- * size it can bear to be.
- *
- * panels_size_allocate() is given an allocation telling it what
- * size the whole container is going to be, and it calls
- * gtk_widget_size_allocate() on all of its (visible) children to
- * set their size and position relative to the top left of the
- * container.
- */
-
-static void panels_size_request(GtkWidget *widget, GtkRequisition *req)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
-
- g_return_if_fail(widget != NULL);
- g_return_if_fail(IS_PANELS(widget));
- g_return_if_fail(req != NULL);
-
- panels = PANELS(widget);
-
- req->width = 0;
- req->height = 0;
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- GtkRequisition creq;
-
- gtk_widget_size_request(child, &creq);
- if (req->width < creq.width)
- req->width = creq.width;
- if (req->height < creq.height)
- req->height = creq.height;
- }
-
- req->width += 2*GTK_CONTAINER(panels)->border_width;
- req->height += 2*GTK_CONTAINER(panels)->border_width;
-}
-
-static void panels_size_allocate(GtkWidget *widget, GtkAllocation *alloc)
-{
- Panels *panels;
- GtkWidget *child;
- GList *children;
- gint border;
-
- g_return_if_fail(widget != NULL);
- g_return_if_fail(IS_PANELS(widget));
- g_return_if_fail(alloc != NULL);
-
- panels = PANELS(widget);
- widget->allocation = *alloc;
- border = GTK_CONTAINER(panels)->border_width;
-
- for (children = panels->children;
- children && (child = children->data);
- children = children->next) {
- GtkAllocation call;
-
- call.x = alloc->x + border;
- call.width = alloc->width - 2*border;
- call.y = alloc->y + border;
- call.height = alloc->height - 2*border;
-
- gtk_widget_size_allocate(child, &call);
- }
-}
projects / u / mdw / putty / commitdiff