* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
- * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
+ */
+
+/**
+ * SECTION:gtkfixed
+ * @Short_description: A container which allows you to position
+ * widgets at fixed coordinates
+ * @Title: GtkFixed
+ *
+ * The #GtkFixed widget is a container which can place child widgets
+ * at fixed positions and with fixed sizes, given in pixels. #GtkFixed
+ * performs no automatic layout management.
+ *
+ * For most applications, you should not use this container! It keeps
+ * you from having to learn about the other GTK+ containers, but it
+ * results in broken applications. With #GtkFixed, the following
+ * things will result in truncated text, overlapping widgets, and
+ * other display bugs:
+ * <itemizedlist>
+ * <listitem><para>
+ * Themes, which may change widget sizes.
+ * </para></listitem>
+ * <listitem><para>
+ * Fonts other than the one you used to write the app will of course
+ * change the size of widgets containing text; keep in mind that
+ * users may use a larger font because of difficulty reading the
+ * default, or they may be using Windows or the framebuffer port of
+ * GTK+, where different fonts are available.
+ * </para></listitem>
+ * <listitem><para>
+ * Translation of text into other languages changes its size. Also,
+ * display of non-English text will use a different font in many
+ * cases.
+ * </para></listitem>
+ * </itemizedlist>
+ *
+ * In addition, the fixed widget can't properly be mirrored in
+ * right-to-left languages such as Hebrew and Arabic. i.e. normally
+ * GTK+ will flip the interface to put labels to the right of the
+ * thing they label, but it can't do that with #GtkFixed. So your
+ * application will not be usable in right-to-left languages.
+ *
+ * Finally, fixed positioning makes it kind of annoying to add/remove
+ * GUI elements, since you have to reposition all the other
+ * elements. This is a long-term maintenance problem for your
+ * application.
+ *
+ * If you know none of these things are an issue for your application,
+ * and prefer the simplicity of #GtkFixed, by all means use the
+ * widget. But you should be aware of the tradeoffs.
*/
#include "config.h"
+
#include "gtkfixed.h"
+
#include "gtkprivate.h"
#include "gtkintl.h"
-struct _GtkFixedPriv
+struct _GtkFixedPrivate
{
GList *children;
};
};
static void gtk_fixed_realize (GtkWidget *widget);
-static void gtk_fixed_size_request (GtkWidget *widget,
- GtkRequisition *requisition);
+static void gtk_fixed_get_preferred_width (GtkWidget *widget,
+ gint *minimum,
+ gint *natural);
+static void gtk_fixed_get_preferred_height (GtkWidget *widget,
+ gint *minimum,
+ gint *natural);
static void gtk_fixed_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation);
+ GtkAllocation *allocation);
static void gtk_fixed_add (GtkContainer *container,
- GtkWidget *widget);
+ GtkWidget *widget);
static void gtk_fixed_remove (GtkContainer *container,
- GtkWidget *widget);
+ GtkWidget *widget);
static void gtk_fixed_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data);
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data);
static GType gtk_fixed_child_type (GtkContainer *container);
static void gtk_fixed_set_child_property (GtkContainer *container,
container_class = (GtkContainerClass*) class;
widget_class->realize = gtk_fixed_realize;
- widget_class->size_request = gtk_fixed_size_request;
+ widget_class->get_preferred_width = gtk_fixed_get_preferred_width;
+ widget_class->get_preferred_height = gtk_fixed_get_preferred_height;
widget_class->size_allocate = gtk_fixed_size_allocate;
container_class->add = gtk_fixed_add;
container_class->remove = gtk_fixed_remove;
container_class->forall = gtk_fixed_forall;
container_class->child_type = gtk_fixed_child_type;
-
container_class->set_child_property = gtk_fixed_set_child_property;
container_class->get_child_property = gtk_fixed_get_child_property;
+ gtk_container_class_handle_border_width (container_class);
gtk_container_class_install_child_property (container_class,
- CHILD_PROP_X,
- g_param_spec_int ("x",
+ CHILD_PROP_X,
+ g_param_spec_int ("x",
P_("X position"),
P_("X position of child widget"),
- G_MININT,
- G_MAXINT,
- 0,
+ G_MININT, G_MAXINT, 0,
GTK_PARAM_READWRITE));
gtk_container_class_install_child_property (container_class,
- CHILD_PROP_Y,
- g_param_spec_int ("y",
+ CHILD_PROP_Y,
+ g_param_spec_int ("y",
P_("Y position"),
P_("Y position of child widget"),
- G_MININT,
- G_MAXINT,
- 0,
+ G_MININT, G_MAXINT, 0,
GTK_PARAM_READWRITE));
- g_type_class_add_private (class, sizeof (GtkFixedPriv));
+ g_type_class_add_private (class, sizeof (GtkFixedPrivate));
}
static GType
-gtk_fixed_child_type (GtkContainer *container)
+gtk_fixed_child_type (GtkContainer *container)
{
return GTK_TYPE_WIDGET;
}
static void
gtk_fixed_init (GtkFixed *fixed)
{
- GtkFixedPriv *priv;
-
- fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed,
- GTK_TYPE_FIXED,
- GtkFixedPriv);
- priv = fixed->priv;
+ fixed->priv = G_TYPE_INSTANCE_GET_PRIVATE (fixed, GTK_TYPE_FIXED, GtkFixedPrivate);
gtk_widget_set_has_window (GTK_WIDGET (fixed), FALSE);
- priv->children = NULL;
+ fixed->priv->children = NULL;
}
+/**
+ * gtk_fixed_new:
+ *
+ * Creates a new #GtkFixed.
+ *
+ * Returns: a new #GtkFixed.
+ */
GtkWidget*
gtk_fixed_new (void)
{
get_child (GtkFixed *fixed,
GtkWidget *widget)
{
- GtkFixedPriv *priv = fixed->priv;
+ GtkFixedPrivate *priv = fixed->priv;
GList *children;
- children = priv->children;
- while (children)
+ for (children = priv->children; children; children = children->next)
{
GtkFixedChild *child;
-
+
child = children->data;
- children = children->next;
if (child->widget == widget)
return child;
return NULL;
}
+/**
+ * gtk_fixed_put:
+ * @fixed: a #GtkFixed.
+ * @widget: the widget to add.
+ * @x: the horizontal position to place the widget at.
+ * @y: the vertical position to place the widget at.
+ *
+ * Adds a widget to a #GtkFixed container at the given position.
+ */
void
-gtk_fixed_put (GtkFixed *fixed,
- GtkWidget *widget,
- gint x,
- gint y)
+gtk_fixed_put (GtkFixed *fixed,
+ GtkWidget *widget,
+ gint x,
+ gint y)
{
- GtkFixedPriv *priv = fixed->priv;
+ GtkFixedPrivate *priv = fixed->priv;
GtkFixedChild *child_info;
g_return_if_fail (GTK_IS_FIXED (fixed));
}
static void
-gtk_fixed_move_internal (GtkFixed *fixed,
- GtkWidget *widget,
- gboolean change_x,
- gint x,
- gboolean change_y,
- gint y)
+gtk_fixed_move_internal (GtkFixed *fixed,
+ GtkFixedChild *child,
+ gint x,
+ gint y)
{
- GtkFixedChild *child;
-
g_return_if_fail (GTK_IS_FIXED (fixed));
- g_return_if_fail (GTK_IS_WIDGET (widget));
- g_return_if_fail (widget->parent == GTK_WIDGET (fixed));
-
- child = get_child (fixed, widget);
+ g_return_if_fail (gtk_widget_get_parent (child->widget) == GTK_WIDGET (fixed));
- g_assert (child);
+ gtk_widget_freeze_child_notify (child->widget);
- gtk_widget_freeze_child_notify (widget);
-
- if (change_x)
+ if (child->x != x)
{
child->x = x;
- gtk_widget_child_notify (widget, "x");
+ gtk_widget_child_notify (child->widget, "x");
}
- if (change_y)
+ if (child->y != y)
{
child->y = y;
- gtk_widget_child_notify (widget, "y");
+ gtk_widget_child_notify (child->widget, "y");
}
- gtk_widget_thaw_child_notify (widget);
-
- if (gtk_widget_get_visible (widget) &&
+ gtk_widget_thaw_child_notify (child->widget);
+
+ if (gtk_widget_get_visible (child->widget) &&
gtk_widget_get_visible (GTK_WIDGET (fixed)))
gtk_widget_queue_resize (GTK_WIDGET (fixed));
}
+/**
+ * gtk_fixed_move:
+ * @fixed: a #GtkFixed.
+ * @widget: the child widget.
+ * @x: the horizontal position to move the widget to.
+ * @y: the vertical position to move the widget to.
+ *
+ * Moves a child of a #GtkFixed container to the given position.
+ */
void
-gtk_fixed_move (GtkFixed *fixed,
- GtkWidget *widget,
- gint x,
- gint y)
+gtk_fixed_move (GtkFixed *fixed,
+ GtkWidget *widget,
+ gint x,
+ gint y)
{
- gtk_fixed_move_internal (fixed, widget, TRUE, x, TRUE, y);
+ gtk_fixed_move_internal (fixed, get_child (fixed, widget), x, y);
}
static void
-gtk_fixed_set_child_property (GtkContainer *container,
- GtkWidget *child,
- guint property_id,
- const GValue *value,
- GParamSpec *pspec)
+gtk_fixed_set_child_property (GtkContainer *container,
+ GtkWidget *child,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
{
+ GtkFixed *fixed = GTK_FIXED (container);
+ GtkFixedChild *fixed_child;
+
+ fixed_child = get_child (fixed, child);
+
switch (property_id)
{
case CHILD_PROP_X:
- gtk_fixed_move_internal (GTK_FIXED (container),
- child,
- TRUE, g_value_get_int (value),
- FALSE, 0);
+ gtk_fixed_move_internal (fixed,
+ fixed_child,
+ g_value_get_int (value),
+ fixed_child->y);
break;
case CHILD_PROP_Y:
- gtk_fixed_move_internal (GTK_FIXED (container),
- child,
- FALSE, 0,
- TRUE, g_value_get_int (value));
+ gtk_fixed_move_internal (fixed,
+ fixed_child,
+ fixed_child->x,
+ g_value_get_int (value));
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
static void
gtk_fixed_realize (GtkWidget *widget)
{
+ GtkAllocation allocation;
+ GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
{
gtk_widget_set_realized (widget, TRUE);
+ gtk_widget_get_allocation (widget, &allocation);
+
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.x = allocation.x;
+ attributes.y = allocation.y;
+ attributes.width = allocation.width;
+ attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
- attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_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);
-
- widget->style = gtk_style_attach (widget->style, widget->window);
- gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+
+ attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
+
+ window = gdk_window_new (gtk_widget_get_parent_window (widget),
+ &attributes, attributes_mask);
+ gtk_widget_set_window (widget, window);
+ gtk_widget_register_window (widget, window);
+
+ gtk_style_context_set_background (gtk_widget_get_style_context (widget),
+ window);
}
}
static void
-gtk_fixed_size_request (GtkWidget *widget,
- GtkRequisition *requisition)
+gtk_fixed_get_preferred_width (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
{
- GtkFixedPriv *priv;
- GtkFixed *fixed;
+ GtkFixed *fixed = GTK_FIXED (widget);
+ GtkFixedPrivate *priv = fixed->priv;
GtkFixedChild *child;
GList *children;
- GtkRequisition child_requisition;
- guint border_width;
+ gint child_min, child_nat;
- fixed = GTK_FIXED (widget);
- priv = fixed->priv;
+ *minimum = 0;
+ *natural = 0;
- requisition->width = 0;
- requisition->height = 0;
-
- children = priv->children;
- while (children)
+ for (children = priv->children; children; children = children->next)
{
child = children->data;
- children = children->next;
- if (gtk_widget_get_visible (child->widget))
- {
- gtk_widget_size_request (child->widget, &child_requisition);
-
- requisition->height = MAX (requisition->height,
- child->y +
- child_requisition.height);
- requisition->width = MAX (requisition->width,
- child->x +
- child_requisition.width);
- }
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ gtk_widget_get_preferred_width (child->widget, &child_min, &child_nat);
+
+ *minimum = MAX (*minimum, child->x + child_min);
+ *natural = MAX (*natural, child->x + child_nat);
}
+}
+
+static void
+gtk_fixed_get_preferred_height (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
+{
+ GtkFixed *fixed = GTK_FIXED (widget);
+ GtkFixedPrivate *priv = fixed->priv;
+ GtkFixedChild *child;
+ GList *children;
+ gint child_min, child_nat;
- border_width = gtk_container_get_border_width (GTK_CONTAINER (fixed));
- requisition->height += border_width * 2;
- requisition->width += border_width * 2;
+ *minimum = 0;
+ *natural = 0;
+
+ for (children = priv->children; children; children = children->next)
+ {
+ child = children->data;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ gtk_widget_get_preferred_height (child->widget, &child_min, &child_nat);
+
+ *minimum = MAX (*minimum, child->y + child_min);
+ *natural = MAX (*natural, child->y + child_nat);
+ }
}
static void
gtk_fixed_size_allocate (GtkWidget *widget,
- GtkAllocation *allocation)
+ GtkAllocation *allocation)
{
GtkFixed *fixed = GTK_FIXED (widget);
- GtkFixedPriv *priv = fixed->priv;
+ GtkFixedPrivate *priv = fixed->priv;
GtkFixedChild *child;
GtkAllocation child_allocation;
GtkRequisition child_requisition;
GList *children;
- guint border_width;
- widget->allocation = *allocation;
+ gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_has_window (widget))
{
if (gtk_widget_get_realized (widget))
- gdk_window_move_resize (widget->window,
- allocation->x,
- allocation->y,
- allocation->width,
- allocation->height);
+ gdk_window_move_resize (gtk_widget_get_window (widget),
+ allocation->x,
+ allocation->y,
+ allocation->width,
+ allocation->height);
}
- border_width = gtk_container_get_border_width (GTK_CONTAINER (fixed));
-
- children = priv->children;
- while (children)
+ for (children = priv->children; children; children = children->next)
{
child = children->data;
- children = children->next;
-
- if (gtk_widget_get_visible (child->widget))
- {
- gtk_widget_get_child_requisition (child->widget, &child_requisition);
- child_allocation.x = child->x + border_width;
- child_allocation.y = child->y + border_width;
-
- if (!gtk_widget_get_has_window (widget))
- {
- child_allocation.x += widget->allocation.x;
- child_allocation.y += widget->allocation.y;
- }
-
- child_allocation.width = child_requisition.width;
- child_allocation.height = child_requisition.height;
- gtk_widget_size_allocate (child->widget, &child_allocation);
- }
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
+ child_allocation.x = child->x;
+ child_allocation.y = child->y;
+
+ if (!gtk_widget_get_has_window (widget))
+ {
+ child_allocation.x += allocation->x;
+ child_allocation.y += allocation->y;
+ }
+
+ child_allocation.width = child_requisition.width;
+ child_allocation.height = child_requisition.height;
+ gtk_widget_size_allocate (child->widget, &child_allocation);
}
}
static void
gtk_fixed_add (GtkContainer *container,
- GtkWidget *widget)
+ GtkWidget *widget)
{
gtk_fixed_put (GTK_FIXED (container), widget, 0, 0);
}
static void
gtk_fixed_remove (GtkContainer *container,
- GtkWidget *widget)
+ GtkWidget *widget)
{
GtkFixed *fixed = GTK_FIXED (container);
- GtkFixedPriv *priv = fixed->priv;
+ GtkFixedPrivate *priv = fixed->priv;
GtkFixedChild *child;
GtkWidget *widget_container = GTK_WIDGET (container);
GList *children;
- children = priv->children;
- while (children)
+ for (children = priv->children; children; children = children->next)
{
child = children->data;
if (child->widget == widget)
- {
- gboolean was_visible = gtk_widget_get_visible (widget);
-
- gtk_widget_unparent (widget);
+ {
+ gboolean was_visible = gtk_widget_get_visible (widget);
- priv->children = g_list_remove_link (priv->children, children);
- g_list_free (children);
- g_free (child);
+ gtk_widget_unparent (widget);
- if (was_visible && gtk_widget_get_visible (widget_container))
- gtk_widget_queue_resize (widget_container);
+ priv->children = g_list_remove_link (priv->children, children);
+ g_list_free (children);
+ g_free (child);
- break;
- }
+ if (was_visible && gtk_widget_get_visible (widget_container))
+ gtk_widget_queue_resize (widget_container);
- children = children->next;
+ break;
+ }
}
}
static void
gtk_fixed_forall (GtkContainer *container,
- gboolean include_internals,
- GtkCallback callback,
- gpointer callback_data)
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data)
{
GtkFixed *fixed = GTK_FIXED (container);
- GtkFixedPriv *priv = fixed->priv;
+ GtkFixedPrivate *priv = fixed->priv;
GtkFixedChild *child;
GList *children;
projects / ~andy / gtk / blobdiff