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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* (C) 1998,1999 by Marcin Dalecki <martin@dalecki.de>
*
* Support for GTK+ 2 was added by:
*
* (C) 2002,2003 Jason Hildebrand <jason@peaceworks.ca>
* Daniel Elstner <daniel.elstner@gmx.net>
*
* This is a special purpose container widget, which manages arbitrary
* children at arbitrary positions width arbitrary sizes. This finally puts
* an end on our resize problems with which we where struggling for such a
* long time.
*/
#include "vim.h"
#include <gtk/gtk.h> /* without this it compiles, but gives errors at
runtime! */
#include "gui_gtk_f.h"
#include <gtk/gtksignal.h>
#ifdef WIN3264
# include <gdk/gdkwin32.h>
#else
# include <gdk/gdkx.h>
#endif
typedef struct _GtkFormChild GtkFormChild;
struct _GtkFormChild
{
GtkWidget *widget;
GdkWindow *window;
gint x; /* relative subwidget x position */
gint y; /* relative subwidget y position */
gint mapped;
};
static void gtk_form_class_init(GtkFormClass *klass);
static void gtk_form_init(GtkForm *form);
static void gtk_form_realize(GtkWidget *widget);
static void gtk_form_unrealize(GtkWidget *widget);
static void gtk_form_map(GtkWidget *widget);
static void gtk_form_size_request(GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_form_size_allocate(GtkWidget *widget,
GtkAllocation *allocation);
static gint gtk_form_expose(GtkWidget *widget,
GdkEventExpose *event);
static void gtk_form_remove(GtkContainer *container,
GtkWidget *widget);
static void gtk_form_forall(GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_form_attach_child_window(GtkForm *form,
GtkFormChild *child);
static void gtk_form_realize_child(GtkForm *form,
GtkFormChild *child);
static void gtk_form_position_child(GtkForm *form,
GtkFormChild *child,
gboolean force_allocate);
static void gtk_form_position_children(GtkForm *form);
static GdkFilterReturn gtk_form_filter(GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
static GdkFilterReturn gtk_form_main_filter(GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
static void gtk_form_set_static_gravity(GdkWindow *window,
gboolean use_static);
static void gtk_form_send_configure(GtkForm *form);
static void gtk_form_child_map(GtkWidget *widget, gpointer user_data);
static void gtk_form_child_unmap(GtkWidget *widget, gpointer user_data);
static GtkWidgetClass *parent_class = NULL;
/* Public interface
*/
GtkWidget *
gtk_form_new(void)
{
GtkForm *form;
form = gtk_type_new(gtk_form_get_type());
return GTK_WIDGET(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);
child->widget = child_widget;
child->window = NULL;
child->x = x;
child->y = y;
child->widget->requisition.width = 0;
child->widget->requisition.height = 0;
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_REALIZED(form))
gtk_form_attach_child_window(form, child);
gtk_widget_set_parent(child_widget, GTK_WIDGET(form));
gtk_widget_size_request(child->widget, NULL);
if (GTK_WIDGET_REALIZED(form) && !GTK_WIDGET_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;
}
}
}
void
gtk_form_freeze(GtkForm *form)
{
g_return_if_fail(GTK_IS_FORM(form));
++form->freeze_count;
}
void
gtk_form_thaw(GtkForm *form)
{
g_return_if_fail(GTK_IS_FORM(form));
if (form->freeze_count)
{
if (!(--form->freeze_count))
{
gtk_form_position_children(form);
gtk_widget_queue_draw(GTK_WIDGET(form));
}
}
}
/* Basic Object handling procedures
*/
GtkType
gtk_form_get_type(void)
{
static GtkType form_type = 0;
if (!form_type)
{
GtkTypeInfo form_info;
vim_memset(&form_info, 0, sizeof(form_info));
form_info.type_name = "GtkForm";
form_info.object_size = sizeof(GtkForm);
form_info.class_size = sizeof(GtkFormClass);
form_info.class_init_func = (GtkClassInitFunc)gtk_form_class_init;
form_info.object_init_func = (GtkObjectInitFunc)gtk_form_init;
form_type = gtk_type_unique(GTK_TYPE_CONTAINER, &form_info);
}
return form_type;
}
static void
gtk_form_class_init(GtkFormClass *klass)
{
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
widget_class = (GtkWidgetClass *) klass;
container_class = (GtkContainerClass *) klass;
parent_class = gtk_type_class(gtk_container_get_type());
widget_class->realize = gtk_form_realize;
widget_class->unrealize = gtk_form_unrealize;
widget_class->map = gtk_form_map;
widget_class->size_request = gtk_form_size_request;
widget_class->size_allocate = gtk_form_size_allocate;
widget_class->expose_event = gtk_form_expose;
container_class->remove = gtk_form_remove;
container_class->forall = gtk_form_forall;
}
static void
gtk_form_init(GtkForm *form)
{
form->children = NULL;
form->width = 1;
form->height = 1;
form->bin_window = NULL;
form->configure_serial = 0;
form->visibility = GDK_VISIBILITY_PARTIAL;
form->freeze_count = 0;
}
/*
* Widget methods
*/
static void
gtk_form_realize(GtkWidget *widget)
{
GList *tmp_list;
GtkForm *form;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail(GTK_IS_FORM(widget));
form = GTK_FORM(widget);
GTK_WIDGET_SET_FLAGS(form, GTK_REALIZED);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual(widget);
attributes.colormap = gtk_widget_get_colormap(widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new(gtk_widget_get_parent_window(widget),
&attributes, attributes_mask);
gdk_window_set_user_data(widget->window, widget);
attributes.x = 0;
attributes.y = 0;
attributes.event_mask = gtk_widget_get_events(widget);
form->bin_window = gdk_window_new(widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data(form->bin_window, widget);
gtk_form_set_static_gravity(form->bin_window, TRUE);
widget->style = gtk_style_attach(widget->style, widget->window);
gtk_style_set_background(widget->style, widget->window, GTK_STATE_NORMAL);
gtk_style_set_background(widget->style, form->bin_window, GTK_STATE_NORMAL);
gdk_window_add_filter(widget->window, gtk_form_main_filter, form);
gdk_window_add_filter(form->bin_window, gtk_form_filter, form);
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
GtkFormChild *child = tmp_list->data;
gtk_form_attach_child_window(form, child);
if (GTK_WIDGET_VISIBLE(child->widget))
gtk_form_realize_child(form, child);
}
}
/* After reading the documentation at
* http://developer.gnome.org/doc/API/2.0/gtk/gtk-changes-2-0.html
* I think it should be possible to remove this function when compiling
* against gtk-2.0. It doesn't seem to cause problems, though.
*
* Well, I reckon at least the gdk_window_show(form->bin_window)
* is necessary. GtkForm is anything but a usual container widget.
*/
static void
gtk_form_map(GtkWidget *widget)
{
GList *tmp_list;
GtkForm *form;
g_return_if_fail(GTK_IS_FORM(widget));
form = GTK_FORM(widget);
GTK_WIDGET_SET_FLAGS(widget, GTK_MAPPED);
gdk_window_show(widget->window);
gdk_window_show(form->bin_window);
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
GtkFormChild *child = tmp_list->data;
if (GTK_WIDGET_VISIBLE(child->widget)
&& !GTK_WIDGET_MAPPED(child->widget))
gtk_widget_map(child->widget);
}
}
static void
gtk_form_unrealize(GtkWidget *widget)
{
GList *tmp_list;
GtkForm *form;
g_return_if_fail(GTK_IS_FORM(widget));
form = GTK_FORM(widget);
tmp_list = form->children;
gdk_window_set_user_data(form->bin_window, NULL);
gdk_window_destroy(form->bin_window);
form->bin_window = NULL;
while (tmp_list)
{
GtkFormChild *child = tmp_list->data;
if (child->window != NULL)
{
gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
GTK_SIGNAL_FUNC(gtk_form_child_map),
child);
gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
GTK_SIGNAL_FUNC(gtk_form_child_unmap),
child);
gdk_window_set_user_data(child->window, NULL);
gdk_window_destroy(child->window);
child->window = NULL;
}
tmp_list = tmp_list->next;
}
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_form_size_request(GtkWidget *widget, GtkRequisition *requisition)
{
GList *tmp_list;
GtkForm *form;
g_return_if_fail(GTK_IS_FORM(widget));
form = GTK_FORM(widget);
requisition->width = form->width;
requisition->height = form->height;
tmp_list = form->children;
while (tmp_list)
{
GtkFormChild *child = tmp_list->data;
gtk_widget_size_request(child->widget, NULL);
tmp_list = tmp_list->next;
}
}
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);
}
static gint
gtk_form_expose(GtkWidget *widget, GdkEventExpose *event)
{
GList *tmp_list;
GtkForm *form;
g_return_val_if_fail(GTK_IS_FORM(widget), FALSE);
form = GTK_FORM(widget);
if (event->window == form->bin_window)
return FALSE;
for (tmp_list = form->children; tmp_list; tmp_list = tmp_list->next)
{
GtkFormChild *formchild = tmp_list->data;
GtkWidget *child = formchild->widget;
/*
* The following chunk of code is taken from gtkcontainer.c. The
* gtk1.x code synthesized expose events directly on the child widgets,
* which can't be done in gtk2
*/
if (GTK_WIDGET_DRAWABLE(child) && GTK_WIDGET_NO_WINDOW(child)
&& child->window == event->window)
{
GdkEventExpose child_event;
child_event = *event;
child_event.region = gtk_widget_region_intersect(child, event->region);
if (!gdk_region_empty(child_event.region))
{
gdk_region_get_clipbox(child_event.region, &child_event.area);
gtk_widget_send_expose(child, (GdkEvent *)&child_event);
}
}
}
return FALSE;
}
/* Container method
*/
static void
gtk_form_remove(GtkContainer *container, GtkWidget *widget)
{
GList *tmp_list;
GtkForm *form;
GtkFormChild *child = NULL; /* init for gcc */
g_return_if_fail(GTK_IS_FORM(container));
form = GTK_FORM(container);
tmp_list = form->children;
while (tmp_list)
{
child = tmp_list->data;
if (child->widget == widget)
break;
tmp_list = tmp_list->next;
}
if (tmp_list)
{
if (child->window)
{
gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
GTK_SIGNAL_FUNC(&gtk_form_child_map), child);
gtk_signal_disconnect_by_func(GTK_OBJECT(child->widget),
GTK_SIGNAL_FUNC(&gtk_form_child_unmap), child);
/* FIXME: This will cause problems for reparenting NO_WINDOW
* widgets out of a GtkForm
*/
gdk_window_set_user_data(child->window, NULL);
gdk_window_destroy(child->window);
}
gtk_widget_unparent(widget);
form->children = g_list_remove_link(form->children, tmp_list);
g_list_free_1(tmp_list);
g_free(child);
}
}
static void
gtk_form_forall(GtkContainer *container,
gboolean include_internals UNUSED,
GtkCallback callback,
gpointer callback_data)
{
GtkForm *form;
GtkFormChild *child;
GList *tmp_list;
g_return_if_fail(GTK_IS_FORM(container));
g_return_if_fail(callback != NULL);
form = GTK_FORM(container);
tmp_list = form->children;
while (tmp_list)
{
child = tmp_list->data;
tmp_list = tmp_list->next;
(*callback) (child->widget, callback_data);
}
}
/* Operations on children
*/
static void
gtk_form_attach_child_window(GtkForm *form, GtkFormChild *child)
{
if (child->window != NULL)
return; /* been there, done that */
if (GTK_WIDGET_NO_WINDOW(child->widget))
{
GtkWidget *widget;
GdkWindowAttr attributes;
gint attributes_mask;
widget = GTK_WIDGET(form);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = child->x;
attributes.y = child->y;
attributes.width = child->widget->requisition.width;
attributes.height = child->widget->requisition.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual(widget);
attributes.colormap = gtk_widget_get_colormap(widget);
attributes.event_mask = GDK_EXPOSURE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
child->window = gdk_window_new(form->bin_window,
&attributes, attributes_mask);
gdk_window_set_user_data(child->window, widget);
gtk_style_set_background(widget->style,
child->window,
GTK_STATE_NORMAL);
gtk_widget_set_parent_window(child->widget, child->window);
gtk_form_set_static_gravity(child->window, TRUE);
/*
* Install signal handlers to map/unmap child->window
* alongside with the actual widget.
*/
gtk_signal_connect(GTK_OBJECT(child->widget), "map",
GTK_SIGNAL_FUNC(&gtk_form_child_map), child);
gtk_signal_connect(GTK_OBJECT(child->widget), "unmap",
GTK_SIGNAL_FUNC(&gtk_form_child_unmap), child);
}
else if (!GTK_WIDGET_REALIZED(child->widget))
{
gtk_widget_set_parent_window(child->widget, form->bin_window);
}
}
static void
gtk_form_realize_child(GtkForm *form, GtkFormChild *child)
{
gtk_form_attach_child_window(form, child);
gtk_widget_realize(child->widget);
if (child->window == NULL) /* might be already set, see above */
gtk_form_set_static_gravity(child->widget->window, TRUE);
}
static void
gtk_form_position_child(GtkForm *form, GtkFormChild *child,
gboolean force_allocate)
{
gint x;
gint y;
x = child->x;
y = child->y;
if ((x >= G_MINSHORT) && (x <= G_MAXSHORT) &&
(y >= G_MINSHORT) && (y <= G_MAXSHORT))
{
if (!child->mapped)
{
if (GTK_WIDGET_MAPPED(form) && GTK_WIDGET_VISIBLE(child->widget))
{
if (!GTK_WIDGET_MAPPED(child->widget))
gtk_widget_map(child->widget);
child->mapped = TRUE;
force_allocate = TRUE;
}
}
if (force_allocate)
{
GtkAllocation allocation;
if (GTK_WIDGET_NO_WINDOW(child->widget))
{
if (child->window)
{
gdk_window_move_resize(child->window,
x, y,
child->widget->requisition.width,
child->widget->requisition.height);
}
allocation.x = 0;
allocation.y = 0;
}
else
{
allocation.x = x;
allocation.y = y;
}
allocation.width = child->widget->requisition.width;
allocation.height = child->widget->requisition.height;
gtk_widget_size_allocate(child->widget, &allocation);
}
}
else
{
if (child->mapped)
{
child->mapped = FALSE;
if (GTK_WIDGET_MAPPED(child->widget))
gtk_widget_unmap(child->widget);
}
}
}
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);
}
/* Callbacks */
/* The main event filter. Actually, we probably don't really need
* to install this as a filter at all, since we are calling it
* directly above in the expose-handling hack.
*
* This routine identifies expose events that are generated when
* we've temporarily moved the bin_window_origin, and translates
* them or discards them, depending on whether we are obscured
* or not.
*/
static GdkFilterReturn
gtk_form_filter(GdkXEvent *gdk_xevent, GdkEvent *event UNUSED, gpointer data)
{
XEvent *xevent;
GtkForm *form;
xevent = (XEvent *) gdk_xevent;
form = GTK_FORM(data);
switch (xevent->type)
{
case Expose:
if (xevent->xexpose.serial == form->configure_serial)
{
if (form->visibility == GDK_VISIBILITY_UNOBSCURED)
return GDK_FILTER_REMOVE;
else
break;
}
break;
case ConfigureNotify:
if ((xevent->xconfigure.x != 0) || (xevent->xconfigure.y != 0))
form->configure_serial = xevent->xconfigure.serial;
break;
}
return GDK_FILTER_CONTINUE;
}
/* Although GDK does have a GDK_VISIBILITY_NOTIFY event,
* there is no corresponding event in GTK, so we have
* to get the events from a filter
*/
static GdkFilterReturn
gtk_form_main_filter(GdkXEvent *gdk_xevent,
GdkEvent *event UNUSED,
gpointer data)
{
XEvent *xevent;
GtkForm *form;
xevent = (XEvent *) gdk_xevent;
form = GTK_FORM(data);
if (xevent->type == VisibilityNotify)
{
switch (xevent->xvisibility.state)
{
case VisibilityFullyObscured:
form->visibility = GDK_VISIBILITY_FULLY_OBSCURED;
break;
case VisibilityPartiallyObscured:
form->visibility = GDK_VISIBILITY_PARTIAL;
break;
case VisibilityUnobscured:
form->visibility = GDK_VISIBILITY_UNOBSCURED;
break;
}
return GDK_FILTER_REMOVE;
}
return GDK_FILTER_CONTINUE;
}
static void
gtk_form_set_static_gravity(GdkWindow *window, gboolean use_static)
{
/* We don't check if static gravity is actually supported, because it
* results in an annoying assertion error message. */
gdk_window_set_static_gravities(window, use_static);
}
void
gtk_form_move_resize(GtkForm *form, GtkWidget *widget,
gint x, gint y, gint w, gint h)
{
widget->requisition.width = w;
widget->requisition.height = h;
gtk_form_move(form, widget, x, y);
}
static void
gtk_form_send_configure(GtkForm *form)
{
GtkWidget *widget;
GdkEventConfigure event;
widget = GTK_WIDGET(form);
event.type = GDK_CONFIGURE;
event.window = widget->window;
event.x = widget->allocation.x;
event.y = widget->allocation.y;
event.width = widget->allocation.width;
event.height = widget->allocation.height;
gtk_main_do_event((GdkEvent*)&event);
}
static void
gtk_form_child_map(GtkWidget *widget UNUSED, gpointer user_data)
{
GtkFormChild *child;
child = (GtkFormChild *)user_data;
child->mapped = TRUE;
gdk_window_show(child->window);
}
static void
gtk_form_child_unmap(GtkWidget *widget UNUSED, gpointer user_data)
{
GtkFormChild *child;
child = (GtkFormChild *)user_data;
child->mapped = FALSE;
gdk_window_hide(child->window);
}
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