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gtk2/gtk/gtkframe.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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, 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/.
*/
#include "config.h"
#include <string.h>
#include "gtkframe.h"
#include "gtklabel.h"
#include "gtkprivate.h"
#include "gtktypebuiltins.h"
#include "gtkintl.h"
#include "gtkbuildable.h"
#include "gtkwidgetpath.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsscustomgadgetprivate.h"
#include "gtkwidgetprivate.h"
#include "gtkcontainerprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtklabel.h"
#include "a11y/gtkframeaccessible.h"
/**
* SECTION:gtkframe
* @Short_description: A bin with a decorative frame and optional label
* @Title: GtkFrame
*
* The frame widget is a bin that surrounds its child with a decorative
* frame and an optional label. If present, the label is drawn in a gap
* in the top side of the frame. The position of the label can be
* controlled with gtk_frame_set_label_align().
*
* # GtkFrame as GtkBuildable
*
* The GtkFrame implementation of the GtkBuildable interface supports
* placing a child in the label position by specifying “label” as the
* “type” attribute of a <child> element. A normal content child can
* be specified without specifying a <child> type attribute.
*
* An example of a UI definition fragment with GtkFrame:
* |[
* <object class="GtkFrame">
* <child type="label">
* <object class="GtkLabel" id="frame-label"/>
* </child>
* <child>
* <object class="GtkEntry" id="frame-content"/>
* </child>
* </object>
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* frame
* ├── border
* ├── <label widget>
* ╰── <child>
* ]|
*
* GtkFrame has a main CSS node with name frame and a subnode with
* name border. The border node is used to render the visible border.
* The style class .flat can appear with the main node.
*/
struct _GtkFramePrivate
{
/* Properties */
GtkWidget *label_widget;
GtkCssGadget *gadget;
GtkCssGadget *border_gadget;
gint16 shadow_type;
gfloat label_xalign;
gfloat label_yalign;
/* Properties */
GtkAllocation child_allocation;
GtkAllocation label_allocation;
};
enum {
PROP_0,
PROP_LABEL,
PROP_LABEL_XALIGN,
PROP_LABEL_YALIGN,
PROP_SHADOW_TYPE,
PROP_LABEL_WIDGET,
LAST_PROP
};
static GParamSpec *frame_props[LAST_PROP];
static void gtk_frame_finalize (GObject *object);
static void gtk_frame_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_frame_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec);
static gboolean gtk_frame_draw (GtkWidget *widget,
cairo_t *cr);
static void gtk_frame_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_frame_remove (GtkContainer *container,
GtkWidget *child);
static void gtk_frame_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_frame_compute_child_allocation (GtkFrame *frame,
GtkAllocation *child_allocation);
static void gtk_frame_real_compute_child_allocation (GtkFrame *frame,
GtkAllocation *child_allocation);
/* GtkBuildable */
static void gtk_frame_buildable_init (GtkBuildableIface *iface);
static void gtk_frame_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
static void gtk_frame_measure_ (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline);
static void gtk_frame_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static void gtk_frame_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static void gtk_frame_measure_border (GtkCssGadget *gadget,
GtkOrientation orientation,
gint for_size,
gint *minimum_size,
gint *natural_size,
gint *minimum_baseline,
gint *natural_baseline,
gpointer data);
static void gtk_frame_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data);
static void gtk_frame_allocate_border (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data);
static gboolean gtk_frame_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data);
G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
G_ADD_PRIVATE (GtkFrame)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_frame_buildable_init))
static void
gtk_frame_class_init (GtkFrameClass *class)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
gobject_class = (GObjectClass*) class;
widget_class = GTK_WIDGET_CLASS (class);
container_class = GTK_CONTAINER_CLASS (class);
gobject_class->finalize = gtk_frame_finalize;
gobject_class->set_property = gtk_frame_set_property;
gobject_class->get_property = gtk_frame_get_property;
frame_props[PROP_LABEL] =
g_param_spec_string ("label",
P_("Label"),
P_("Text of the frame's label"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
frame_props[PROP_LABEL_XALIGN] =
g_param_spec_float ("label-xalign",
P_("Label xalign"),
P_("The horizontal alignment of the label"),
0.0, 1.0,
0.0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
frame_props[PROP_LABEL_YALIGN] =
g_param_spec_float ("label-yalign",
P_("Label yalign"),
P_("The vertical alignment of the label"),
0.0, 1.0,
0.5,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
frame_props[PROP_SHADOW_TYPE] =
g_param_spec_enum ("shadow-type",
P_("Frame shadow"),
P_("Appearance of the frame border"),
GTK_TYPE_SHADOW_TYPE,
GTK_SHADOW_ETCHED_IN,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
frame_props[PROP_LABEL_WIDGET] =
g_param_spec_object ("label-widget",
P_("Label widget"),
P_("A widget to display in place of the usual frame label"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE);
g_object_class_install_properties (gobject_class, LAST_PROP, frame_props);
widget_class->draw = gtk_frame_draw;
widget_class->size_allocate = gtk_frame_size_allocate;
widget_class->measure = gtk_frame_measure_;
widget_class->state_flags_changed = gtk_frame_state_flags_changed;
container_class->remove = gtk_frame_remove;
container_class->forall = gtk_frame_forall;
class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_FRAME_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, "frame");
}
static void
gtk_frame_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = gtk_frame_buildable_add_child;
}
static void
gtk_frame_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (type && strcmp (type, "label") == 0)
gtk_frame_set_label_widget (GTK_FRAME (buildable), GTK_WIDGET (child));
else if (!type)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (GTK_FRAME (buildable), type);
}
static void
gtk_frame_init (GtkFrame *frame)
{
GtkFramePrivate *priv;
GtkCssNode *widget_node;
frame->priv = gtk_frame_get_instance_private (frame);
priv = frame->priv;
priv->label_widget = NULL;
priv->shadow_type = GTK_SHADOW_ETCHED_IN;
priv->label_xalign = 0.0;
priv->label_yalign = 0.5;
widget_node = gtk_widget_get_css_node (GTK_WIDGET (frame));
priv->gadget = gtk_css_custom_gadget_new_for_node (widget_node,
GTK_WIDGET (frame),
gtk_frame_measure,
gtk_frame_allocate,
gtk_frame_render,
NULL,
NULL,
NULL);
priv->border_gadget = gtk_css_custom_gadget_new ("border",
GTK_WIDGET (frame),
priv->gadget,
NULL,
gtk_frame_measure_border,
gtk_frame_allocate_border,
NULL,
NULL,
NULL,
NULL);
gtk_css_gadget_set_state (priv->border_gadget, gtk_widget_get_state_flags (GTK_WIDGET (frame)));
}
static void
gtk_frame_finalize (GObject *object)
{
GtkFrame *frame = GTK_FRAME (object);
GtkFramePrivate *priv = frame->priv;
g_clear_object (&priv->border_gadget);
g_clear_object (&priv->gadget);
G_OBJECT_CLASS (gtk_frame_parent_class)->finalize (object);
}
static void
gtk_frame_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkFrame *frame = GTK_FRAME (object);
GtkFramePrivate *priv = frame->priv;
switch (prop_id)
{
case PROP_LABEL:
gtk_frame_set_label (frame, g_value_get_string (value));
break;
case PROP_LABEL_XALIGN:
gtk_frame_set_label_align (frame, g_value_get_float (value),
priv->label_yalign);
break;
case PROP_LABEL_YALIGN:
gtk_frame_set_label_align (frame, priv->label_xalign,
g_value_get_float (value));
break;
case PROP_SHADOW_TYPE:
gtk_frame_set_shadow_type (frame, g_value_get_enum (value));
break;
case PROP_LABEL_WIDGET:
gtk_frame_set_label_widget (frame, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_frame_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkFrame *frame = GTK_FRAME (object);
GtkFramePrivate *priv = frame->priv;
switch (prop_id)
{
case PROP_LABEL:
g_value_set_string (value, gtk_frame_get_label (frame));
break;
case PROP_LABEL_XALIGN:
g_value_set_float (value, priv->label_xalign);
break;
case PROP_LABEL_YALIGN:
g_value_set_float (value, priv->label_yalign);
break;
case PROP_SHADOW_TYPE:
g_value_set_enum (value, priv->shadow_type);
break;
case PROP_LABEL_WIDGET:
g_value_set_object (value,
priv->label_widget ?
G_OBJECT (priv->label_widget) : NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_frame_new:
* @label: (allow-none): the text to use as the label of the frame
*
* Creates a new #GtkFrame, with optional label @label.
* If @label is %NULL, the label is omitted.
*
* Returns: a new #GtkFrame widget
**/
GtkWidget*
gtk_frame_new (const gchar *label)
{
return g_object_new (GTK_TYPE_FRAME, "label", label, NULL);
}
static void
gtk_frame_remove (GtkContainer *container,
GtkWidget *child)
{
GtkFrame *frame = GTK_FRAME (container);
GtkFramePrivate *priv = frame->priv;
if (priv->label_widget == child)
gtk_frame_set_label_widget (frame, NULL);
else
GTK_CONTAINER_CLASS (gtk_frame_parent_class)->remove (container, child);
}
static void
gtk_frame_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkBin *bin = GTK_BIN (container);
GtkFrame *frame = GTK_FRAME (container);
GtkFramePrivate *priv = frame->priv;
GtkWidget *child;
child = gtk_bin_get_child (bin);
if (child)
(* callback) (child, callback_data);
if (priv->label_widget)
(* callback) (priv->label_widget, callback_data);
}
/**
* gtk_frame_set_label:
* @frame: a #GtkFrame
* @label: (allow-none): the text to use as the label of the frame
*
* Sets the text of the label. If @label is %NULL,
* the current label is removed.
**/
void
gtk_frame_set_label (GtkFrame *frame,
const gchar *label)
{
g_return_if_fail (GTK_IS_FRAME (frame));
if (!label)
{
gtk_frame_set_label_widget (frame, NULL);
}
else
{
GtkWidget *child = gtk_label_new (label);
gtk_widget_show (child);
gtk_frame_set_label_widget (frame, child);
}
}
/**
* gtk_frame_get_label:
* @frame: a #GtkFrame
*
* If the frame’s label widget is a #GtkLabel, returns the
* text in the label widget. (The frame will have a #GtkLabel
* for the label widget if a non-%NULL argument was passed
* to gtk_frame_new().)
*
* Returns: (nullable): the text in the label, or %NULL if there
* was no label widget or the lable widget was not
* a #GtkLabel. This string is owned by GTK+ and
* must not be modified or freed.
**/
const gchar *
gtk_frame_get_label (GtkFrame *frame)
{
GtkFramePrivate *priv;
g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
priv = frame->priv;
if (GTK_IS_LABEL (priv->label_widget))
return gtk_label_get_text (GTK_LABEL (priv->label_widget));
else
return NULL;
}
/**
* gtk_frame_set_label_widget:
* @frame: a #GtkFrame
* @label_widget: (nullable): the new label widget
*
* Sets the label widget for the frame. This is the widget that
* will appear embedded in the top edge of the frame as a
* title.
**/
void
gtk_frame_set_label_widget (GtkFrame *frame,
GtkWidget *label_widget)
{
GtkFramePrivate *priv;
gboolean need_resize = FALSE;
g_return_if_fail (GTK_IS_FRAME (frame));
g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget));
g_return_if_fail (label_widget == NULL || gtk_widget_get_parent (label_widget) == NULL);
priv = frame->priv;
if (priv->label_widget == label_widget)
return;
if (priv->label_widget)
{
need_resize = gtk_widget_get_visible (priv->label_widget);
gtk_widget_unparent (priv->label_widget);
}
priv->label_widget = label_widget;
if (label_widget)
{
priv->label_widget = label_widget;
gtk_widget_set_parent (label_widget, GTK_WIDGET (frame));
need_resize |= gtk_widget_get_visible (label_widget);
}
if (gtk_widget_get_visible (GTK_WIDGET (frame)) && need_resize)
gtk_widget_queue_resize (GTK_WIDGET (frame));
g_object_freeze_notify (G_OBJECT (frame));
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL_WIDGET]);
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL]);
g_object_thaw_notify (G_OBJECT (frame));
}
/**
* gtk_frame_get_label_widget:
* @frame: a #GtkFrame
*
* Retrieves the label widget for the frame. See
* gtk_frame_set_label_widget().
*
* Returns: (nullable) (transfer none): the label widget, or %NULL if
* there is none.
**/
GtkWidget *
gtk_frame_get_label_widget (GtkFrame *frame)
{
g_return_val_if_fail (GTK_IS_FRAME (frame), NULL);
return frame->priv->label_widget;
}
/**
* gtk_frame_set_label_align:
* @frame: a #GtkFrame
* @xalign: The position of the label along the top edge
* of the widget. A value of 0.0 represents left alignment;
* 1.0 represents right alignment.
* @yalign: The y alignment of the label. A value of 0.0 aligns under
* the frame; 1.0 aligns above the frame. If the values are exactly
* 0.0 or 1.0 the gap in the frame won’t be painted because the label
* will be completely above or below the frame.
*
* Sets the alignment of the frame widget’s label. The
* default values for a newly created frame are 0.0 and 0.5.
**/
void
gtk_frame_set_label_align (GtkFrame *frame,
gfloat xalign,
gfloat yalign)
{
GtkFramePrivate *priv;
g_return_if_fail (GTK_IS_FRAME (frame));
priv = frame->priv;
xalign = CLAMP (xalign, 0.0, 1.0);
yalign = CLAMP (yalign, 0.0, 1.0);
g_object_freeze_notify (G_OBJECT (frame));
if (xalign != priv->label_xalign)
{
priv->label_xalign = xalign;
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL_XALIGN]);
}
if (yalign != priv->label_yalign)
{
priv->label_yalign = yalign;
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_LABEL_YALIGN]);
}
g_object_thaw_notify (G_OBJECT (frame));
gtk_widget_queue_resize (GTK_WIDGET (frame));
}
/**
* gtk_frame_get_label_align:
* @frame: a #GtkFrame
* @xalign: (out) (allow-none): location to store X alignment of
* frame’s label, or %NULL
* @yalign: (out) (allow-none): location to store X alignment of
* frame’s label, or %NULL
*
* Retrieves the X and Y alignment of the frame’s label. See
* gtk_frame_set_label_align().
**/
void
gtk_frame_get_label_align (GtkFrame *frame,
gfloat *xalign,
gfloat *yalign)
{
GtkFramePrivate *priv;
g_return_if_fail (GTK_IS_FRAME (frame));
priv = frame->priv;
if (xalign)
*xalign = priv->label_xalign;
if (yalign)
*yalign = priv->label_yalign;
}
/**
* gtk_frame_set_shadow_type:
* @frame: a #GtkFrame
* @type: the new #GtkShadowType
*
* Sets the shadow type for @frame.
**/
void
gtk_frame_set_shadow_type (GtkFrame *frame,
GtkShadowType type)
{
GtkFramePrivate *priv;
g_return_if_fail (GTK_IS_FRAME (frame));
priv = frame->priv;
if ((GtkShadowType) priv->shadow_type != type)
{
priv->shadow_type = type;
if (type == GTK_SHADOW_NONE)
gtk_css_gadget_add_class (priv->border_gadget, GTK_STYLE_CLASS_FLAT);
else
gtk_css_gadget_remove_class (priv->border_gadget, GTK_STYLE_CLASS_FLAT);
g_object_notify_by_pspec (G_OBJECT (frame), frame_props[PROP_SHADOW_TYPE]);
}
}
/**
* gtk_frame_get_shadow_type:
* @frame: a #GtkFrame
*
* Retrieves the shadow type of the frame. See
* gtk_frame_set_shadow_type().
*
* Returns: the current shadow type of the frame.
**/
GtkShadowType
gtk_frame_get_shadow_type (GtkFrame *frame)
{
g_return_val_if_fail (GTK_IS_FRAME (frame), GTK_SHADOW_ETCHED_IN);
return frame->priv->shadow_type;
}
static gboolean
gtk_frame_draw (GtkWidget *widget,
cairo_t *cr)
{
gtk_css_gadget_draw (GTK_FRAME (widget)->priv->gadget, cr);
return FALSE;
}
static gboolean
gtk_frame_render (GtkCssGadget *gadget,
cairo_t *cr,
int x,
int y,
int width,
int height,
gpointer data)
{
GtkWidget *widget;
GtkFramePrivate *priv;
gint xc, yc, w, h;
GtkAllocation allocation;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_FRAME (widget)->priv;
cairo_save (cr);
gtk_widget_get_allocation (widget, &allocation);
/* We want to use the standard gadget drawing for the border,
* so we clip out the label allocation in order to get the
* frame gap.
*/
xc = priv->label_allocation.x - allocation.x;
yc = y;
w = priv->label_allocation.width;
h = priv->label_allocation.height;
if (GTK_IS_LABEL (priv->label_widget))
{
PangoRectangle ink_rect;
/* Shrink the clip area for labels, so we get unclipped
* frames for the yalign 0.0 and 1.0 cases.
*/
pango_layout_get_pixel_extents (gtk_label_get_layout (GTK_LABEL (priv->label_widget)), &ink_rect, NULL);
yc += (h - ink_rect.height) / 2;
h = ink_rect.height;
}
cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
cairo_rectangle (cr, xc + w, yc, - w, h);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
cairo_clip (cr);
gtk_css_gadget_draw (priv->border_gadget, cr);
cairo_restore (cr);
GTK_WIDGET_CLASS (gtk_frame_parent_class)->draw (widget, cr);
return FALSE;
}
static void
gtk_frame_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAllocation clip;
gtk_widget_set_allocation (widget, allocation);
gtk_css_gadget_allocate (GTK_FRAME (widget)->priv->gadget,
allocation,
gtk_widget_get_allocated_baseline (widget),
&clip);
gtk_widget_set_clip (widget, &clip);
}
static void
gtk_frame_allocate (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget;
GtkFrame *frame;
GtkFramePrivate *priv;
GtkAllocation new_allocation;
GtkAllocation frame_allocation;
gint height_extra;
GtkAllocation clip;
widget = gtk_css_gadget_get_owner (gadget);
frame = GTK_FRAME (widget);
priv = frame->priv;
gtk_frame_compute_child_allocation (frame, &new_allocation);
priv->child_allocation = new_allocation;
if (priv->label_widget &&
gtk_widget_get_visible (priv->label_widget))
{
gint nat_width, width, height;
gfloat xalign;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = priv->label_xalign;
else
xalign = 1 - priv->label_xalign;
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_HORIZONTAL, -1,
NULL, &nat_width, NULL, NULL);
width = MIN (new_allocation.width, nat_width);
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_VERTICAL, width,
&height, NULL, NULL, NULL);
priv->label_allocation.x = new_allocation.x + (new_allocation.width - width) * xalign;
priv->label_allocation.y = new_allocation.y - height;
priv->label_allocation.height = height;
priv->label_allocation.width = width;
gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
height_extra = (1 - priv->label_yalign) * height;
}
else
height_extra = 0;
frame_allocation.x = priv->child_allocation.x;
frame_allocation.y = priv->child_allocation.y - height_extra;
frame_allocation.width = priv->child_allocation.width;
frame_allocation.height = priv->child_allocation.height + height_extra;
gtk_css_gadget_allocate (priv->border_gadget,
&frame_allocation,
-1,
&clip);
gtk_container_get_children_clip (GTK_CONTAINER (widget), out_clip);
gdk_rectangle_union (out_clip, &clip, out_clip);
}
static void
gtk_frame_allocate_border (GtkCssGadget *gadget,
const GtkAllocation *allocation,
int baseline,
GtkAllocation *out_clip,
gpointer data)
{
GtkWidget *widget;
GtkFramePrivate *priv;
GtkWidget *child;
GtkAllocation child_allocation;
gint height_extra;
widget = gtk_css_gadget_get_owner (gadget);
priv = GTK_FRAME (widget)->priv;
if (priv->label_widget &&
gtk_widget_get_visible (priv->label_widget))
height_extra = priv->label_allocation.height * (1 - priv->label_yalign);
else
height_extra = 0;
child_allocation = *allocation;
child_allocation.y += height_extra;
child_allocation.height -= height_extra;
child = gtk_bin_get_child (GTK_BIN (widget));
if (child && gtk_widget_get_visible (child))
gtk_widget_size_allocate (child, &child_allocation);
*out_clip = *allocation;
}
static void
gtk_frame_compute_child_allocation (GtkFrame *frame,
GtkAllocation *child_allocation)
{
g_return_if_fail (GTK_IS_FRAME (frame));
g_return_if_fail (child_allocation != NULL);
GTK_FRAME_GET_CLASS (frame)->compute_child_allocation (frame, child_allocation);
}
static void
gtk_frame_real_compute_child_allocation (GtkFrame *frame,
GtkAllocation *child_allocation)
{
GtkFramePrivate *priv = frame->priv;
GtkAllocation allocation;
gint height;
gtk_css_gadget_get_content_allocation (priv->gadget, &allocation, NULL);
if (priv->label_widget)
{
gint nat_width, width;
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_HORIZONTAL, -1,
NULL, &nat_width, NULL, NULL);
width = MIN (allocation.width, nat_width);
gtk_widget_measure (priv->label_widget, GTK_ORIENTATION_VERTICAL, width,
&height, NULL, NULL, NULL);
}
else
height = 0;
child_allocation->x = allocation.x;
child_allocation->y = allocation.y + height;
child_allocation->width = MAX (1, allocation.width);
child_allocation->height = MAX (1, allocation.height - height);
}
static void
gtk_frame_measure (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget;
GtkFrame *frame;
GtkFramePrivate *priv;
gint child_min, child_nat;
widget = gtk_css_gadget_get_owner (gadget);
frame = GTK_FRAME (widget);
priv = frame->priv;
gtk_css_gadget_get_preferred_size (priv->border_gadget,
orientation,
for_size,
&child_min,
&child_nat,
NULL, NULL);
*minimum = child_min;
*natural = child_nat;
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_widget_measure (priv->label_widget, orientation, -1, &child_min, &child_nat, NULL, NULL);
*minimum = MAX (child_min, *minimum);
*natural = MAX (child_nat, *natural);
}
else
{
gtk_widget_measure (priv->label_widget, orientation, for_size, &child_min, &child_nat, NULL, NULL);
*minimum += child_min;
*natural += child_nat;
}
}
}
static void
gtk_frame_measure_border (GtkCssGadget *gadget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline,
gpointer data)
{
GtkWidget *widget = gtk_css_gadget_get_owner (gadget);
GtkWidget *child;
int child_min, child_nat;
child = gtk_bin_get_child (GTK_BIN (widget));
if (child && gtk_widget_get_visible (child))
{
gtk_widget_measure (child, orientation, for_size, &child_min, &child_nat, NULL, NULL);
*minimum = child_min;
*natural = child_nat;
}
else
{
*minimum = 0;
*natural = 0;
}
}
static void
gtk_frame_measure_ (GtkWidget *widget,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
gtk_frame_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
gtk_css_gadget_set_state (GTK_FRAME (widget)->priv->border_gadget, gtk_widget_get_state_flags (widget));
GTK_WIDGET_CLASS (gtk_frame_parent_class)->state_flags_changed (widget, previous_state);
}
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