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gtk2/gtk/gtkframe.c
Claudio Saavedra 064204da9b GtkFrame: Fix a casting in the compute_child_allocation() method 
The casting used to calculate the child allocation is confusing MAX().
As a result, width and height end up with negative values, which makes no sense.

https://bugzilla.gnome.org/show_bug.cgi?id=666109
2011-12-13 20:26:30 +02:00

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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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* 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 "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().
*
* <refsect2 id="GtkFrame-BUILDER-UI">
* <title>GtkFrame as GtkBuildable</title>
* <para>
* The GtkFrame implementation of the GtkBuildable interface
* supports placing a child in the label position by specifying
* "label" as the "type" attribute of a &lt;child&gt; element.
* A normal content child can be specified without specifying
* a &lt;child&gt; type attribute.
* </para>
* <example>
* <title>A UI definition fragment with GtkFrame</title>
* <programlisting><![CDATA[
* <object class="GtkFrame">
* <child type="label">
* <object class="GtkLabel" id="frame-label"/>
* </child>
* <child>
* <object class="GtkEntry" id="frame-content"/>
* </child>
* </object>
* ]]></programlisting>
* </example>
* </refsect2>
*/
#define LABEL_PAD 1
#define LABEL_SIDE_PAD 2
struct _GtkFramePrivate
{
/* Properties */
GtkWidget *label_widget;
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
};
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 GtkWidgetPath * gtk_frame_get_path_for_child (GtkContainer *container,
GtkWidget *child);
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_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_frame_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_frame_get_preferred_height_for_width(GtkWidget *layout,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_frame_get_preferred_width_for_height(GtkWidget *layout,
gint width,
gint *minimum_height,
gint *natural_height);
G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
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->set_property = gtk_frame_set_property;
gobject_class->get_property = gtk_frame_get_property;
g_object_class_install_property (gobject_class,
PROP_LABEL,
g_param_spec_string ("label",
P_("Label"),
P_("Text of the frame's label"),
NULL,
GTK_PARAM_READABLE |
GTK_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
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_object_class_install_property (gobject_class,
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_object_class_install_property (gobject_class,
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_object_class_install_property (gobject_class,
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));
widget_class->draw = gtk_frame_draw;
widget_class->size_allocate = gtk_frame_size_allocate;
widget_class->get_preferred_width = gtk_frame_get_preferred_width;
widget_class->get_preferred_height = gtk_frame_get_preferred_height;
widget_class->get_preferred_height_for_width = gtk_frame_get_preferred_height_for_width;
widget_class->get_preferred_width_for_height = gtk_frame_get_preferred_width_for_height;
container_class->remove = gtk_frame_remove;
container_class->forall = gtk_frame_forall;
container_class->get_path_for_child = gtk_frame_get_path_for_child;
class->compute_child_allocation = gtk_frame_real_compute_child_allocation;
g_type_class_add_private (class, sizeof (GtkFramePrivate));
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_FRAME_ACCESSIBLE);
}
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;
GtkStyleContext *context;
frame->priv = G_TYPE_INSTANCE_GET_PRIVATE (frame,
GTK_TYPE_FRAME,
GtkFramePrivate);
priv = frame->priv;
priv->label_widget = NULL;
priv->shadow_type = GTK_SHADOW_ETCHED_IN;
priv->label_xalign = 0.0;
priv->label_yalign = 0.5;
context = gtk_widget_get_style_context (GTK_WIDGET (frame));
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
}
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: 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.
*
* Return value: 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);
}
static GtkWidgetPath *
gtk_frame_get_path_for_child (GtkContainer *container,
GtkWidget *child)
{
GtkFramePrivate *priv = GTK_FRAME (container)->priv;
GtkWidgetPath *path;
path = GTK_CONTAINER_CLASS (gtk_frame_parent_class)->get_path_for_child (container, child);
if (child == priv->label_widget)
gtk_widget_path_iter_add_class (path,
gtk_widget_path_length (path) - 2,
GTK_STYLE_CLASS_FRAME);
return path;
}
/**
* 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().)
*
* Return value: 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: 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 (G_OBJECT (frame), "label-widget");
g_object_notify (G_OBJECT (frame), "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().
*
* Return value: (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 (G_OBJECT (frame), "label-xalign");
}
if (yalign != priv->label_yalign)
{
priv->label_yalign = yalign;
g_object_notify (G_OBJECT (frame), "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;
GtkWidget *widget;
g_return_if_fail (GTK_IS_FRAME (frame));
priv = frame->priv;
if ((GtkShadowType) priv->shadow_type != type)
{
widget = GTK_WIDGET (frame);
priv->shadow_type = type;
g_object_notify (G_OBJECT (frame), "shadow-type");
if (gtk_widget_is_drawable (widget))
{
gtk_widget_queue_draw (widget);
}
gtk_widget_queue_resize (widget);
}
}
/**
* gtk_frame_get_shadow_type:
* @frame: a #GtkFrame
*
* Retrieves the shadow type of the frame. See
* gtk_frame_set_shadow_type().
*
* Return value: 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 void
get_padding_and_border (GtkFrame *frame,
GtkBorder *border)
{
GtkStyleContext *context;
GtkStateFlags state;
context = gtk_widget_get_style_context (GTK_WIDGET (frame));
state = gtk_widget_get_state_flags (GTK_WIDGET (frame));
gtk_style_context_get_padding (context, state, border);
if (frame->priv->shadow_type != GTK_SHADOW_NONE)
{
GtkBorder tmp;
gtk_style_context_get_border (context, state, &tmp);
border->top += tmp.top;
border->right += tmp.right;
border->bottom += tmp.bottom;
border->left += tmp.left;
}
}
static gboolean
gtk_frame_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkFrame *frame;
GtkFramePrivate *priv;
GtkStyleContext *context;
gint x, y, width, height;
GtkAllocation allocation;
GtkBorder padding;
frame = GTK_FRAME (widget);
priv = frame->priv;
gtk_widget_get_allocation (widget, &allocation);
get_padding_and_border (frame, &padding);
context = gtk_widget_get_style_context (widget);
x = priv->child_allocation.x - allocation.x - padding.left;
y = priv->child_allocation.y - allocation.y - padding.top;
width = priv->child_allocation.width + padding.left + padding.right;
height = priv->child_allocation.height + padding.top + padding.bottom;
if (priv->shadow_type != GTK_SHADOW_NONE)
{
if (priv->label_widget)
{
gfloat xalign;
gint height_extra;
gint x2;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = priv->label_xalign;
else
xalign = 1 - priv->label_xalign;
height_extra = MAX (0, priv->label_allocation.height - padding.top)
- priv->label_yalign * priv->label_allocation.height;
y -= height_extra;
height += height_extra;
x2 = padding.left + (priv->child_allocation.width - priv->label_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
/* If the label is completely over or under the frame we can omit the gap */
if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
gtk_render_frame (context, cr, x, y, width, height);
else
gtk_render_frame_gap (context, cr,
x, y, width, height,
GTK_POS_TOP, x2,
x2 + priv->label_allocation.width + 2 * LABEL_PAD);
}
else
gtk_render_frame (context, cr, x, y, width, height);
}
GTK_WIDGET_CLASS (gtk_frame_parent_class)->draw (widget, cr);
return FALSE;
}
static void
gtk_frame_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkFrame *frame = GTK_FRAME (widget);
GtkFramePrivate *priv = frame->priv;
GtkBin *bin = GTK_BIN (widget);
GtkAllocation new_allocation;
GtkWidget *child;
gtk_widget_set_allocation (widget, allocation);
gtk_frame_compute_child_allocation (frame, &new_allocation);
/* If the child allocation changed, that means that the frame is drawn
* in a new place, so we must redraw the entire widget.
*/
if (gtk_widget_get_mapped (widget))
{
gdk_window_invalidate_rect (gtk_widget_get_window (widget), allocation, FALSE);
}
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
gtk_widget_size_allocate (child, &new_allocation);
priv->child_allocation = new_allocation;
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
GtkBorder padding;
gint nat_width, width, height;
gfloat xalign;
get_padding_and_border (frame, &padding);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = priv->label_xalign;
else
xalign = 1 - priv->label_xalign;
gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
width = new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD;
width = MIN (width, nat_width);
gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
&height, NULL);
priv->label_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
(new_allocation.width - width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
priv->label_allocation.width = width;
priv->label_allocation.y = priv->child_allocation.y - MAX (height, padding.top);
priv->label_allocation.height = height;
gtk_widget_size_allocate (priv->label_widget, &priv->label_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;
GtkWidget *widget = GTK_WIDGET (frame);
GtkAllocation allocation;
GtkBorder padding;
gint top_margin;
guint border_width;
gtk_widget_get_allocation (widget, &allocation);
get_padding_and_border (frame, &padding);
border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
if (priv->label_widget)
{
gint nat_width, width, height;
gtk_widget_get_preferred_width (priv->label_widget, NULL, &nat_width);
width = allocation.width;
width -= 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
width -= (border_width * 2) + padding.left + padding.right;
width = MIN (width, nat_width);
gtk_widget_get_preferred_height_for_width (priv->label_widget, width,
&height, NULL);
top_margin = MAX (height, padding.top);
}
else
top_margin = padding.top;
child_allocation->x = border_width + padding.left;
child_allocation->y = border_width + top_margin;
child_allocation->width = MAX (1, (gint) (allocation.width - (border_width * 2) -
padding.left - padding.right));
child_allocation->height = MAX (1, (gint) (allocation.height - child_allocation->y -
border_width - padding.bottom));
child_allocation->x += allocation.x;
child_allocation->y += allocation.y;
}
static void
gtk_frame_get_preferred_size (GtkWidget *request,
GtkOrientation orientation,
gint *minimum_size,
gint *natural_size)
{
GtkFrame *frame = GTK_FRAME (request);
GtkFramePrivate *priv = frame->priv;
GtkBorder padding;
GtkWidget *widget = GTK_WIDGET (request);
GtkWidget *child;
GtkBin *bin = GTK_BIN (widget);
gint child_min, child_nat;
gint minimum, natural;
guint border_width;
get_padding_and_border (frame, &padding);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_widget_get_preferred_width (priv->label_widget,
&child_min, &child_nat);
minimum = child_min + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
natural = child_nat + 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
}
else
{
gtk_widget_get_preferred_height (priv->label_widget,
&child_min, &child_nat);
minimum = MAX (0, child_min - padding.top);
natural = MAX (0, child_nat - padding.top);
}
}
else
{
minimum = 0;
natural = 0;
}
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_widget_get_preferred_width (child,
&child_min, &child_nat);
minimum = MAX (minimum, child_min);
natural = MAX (natural, child_nat);
}
else
{
gtk_widget_get_preferred_height (child,
&child_min, &child_nat);
minimum += child_min;
natural += child_nat;
}
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
minimum += (border_width * 2) + padding.left + padding.right;
natural += (border_width * 2) + padding.left + padding.right;
}
else
{
minimum += (border_width * 2) + padding.top + padding.bottom;
natural += (border_width * 2) + padding.top + padding.bottom;
}
if (minimum_size)
*minimum_size = minimum;
if (natural_size)
*natural_size = natural;
}
static void
gtk_frame_get_preferred_width (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
}
static void
gtk_frame_get_preferred_height (GtkWidget *widget,
gint *minimum_size,
gint *natural_size)
{
gtk_frame_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
}
static void
gtk_frame_get_preferred_height_for_width (GtkWidget *request,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkWidget *widget = GTK_WIDGET (request);
GtkWidget *child;
GtkFrame *frame = GTK_FRAME (widget);
GtkFramePrivate *priv = frame->priv;
GtkBin *bin = GTK_BIN (widget);
GtkBorder padding;
gint child_min, child_nat, label_width;
gint minimum, natural;
guint border_width;
get_padding_and_border (frame, &padding);
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
minimum = (border_width * 2) + padding.top + padding.bottom;
natural = (border_width * 2) + padding.top + padding.bottom;
width -= (border_width * 2) + padding.left + padding.right;
label_width = width - 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
gtk_widget_get_preferred_height_for_width (priv->label_widget,
label_width, &child_min, &child_nat);
minimum += child_min;
natural += child_nat;
}
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
{
gtk_widget_get_preferred_height_for_width (child,
width, &child_min, &child_nat);
minimum += child_min;
natural += child_nat;
}
if (minimum_height)
*minimum_height = minimum;
if (natural_height)
*natural_height = natural;
}
static void
gtk_frame_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
}
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