gtk2/gtk/gtkframe.c
Timm Bäder 870a5b424f frame: Don't move border gadget and child down
Setting label-yalign should affect the border gadget, but we need to
compensate for its position by moving the child down or up, depending on
the border gadget's position, so the child never moves.

https://bugzilla.gnome.org/show_bug.cgi?id=762123
2016-02-28 09:24:21 -05:00

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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, 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.
*/
#define LABEL_PAD 1
#define LABEL_SIDE_PAD 2
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_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);
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->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;
widget_class->state_flags_changed = gtk_frame_state_flags_changed;
container_class->remove = gtk_frame_remove;
container_class->forall = gtk_frame_forall;
gtk_container_class_handle_border_width (container_class);
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);
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);
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 frames 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 wont be painted because the label
* will be completely above or below the frame.
*
* Sets the alignment of the frame widgets 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
* frames label, or %NULL
* @yalign: (out) (allow-none): location to store X alignment of
* frames label, or %NULL
*
* Retrieves the X and Y alignment of the frames 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_get_preferred_width (priv->label_widget, NULL, &nat_width);
width = MIN (new_allocation.width, nat_width);
gtk_widget_get_preferred_height_for_width (priv->label_widget, width, &height, 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_get_preferred_width (priv->label_widget, NULL, &nat_width);
width = MIN (allocation.width, nat_width);
gtk_widget_get_preferred_height_for_width (priv->label_widget, width, &height, 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;
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;
*natural = child_nat;
}
else
{
if (for_size > 0)
gtk_widget_get_preferred_height_for_width (priv->label_widget,
for_size, &child_min, &child_nat);
else
gtk_widget_get_preferred_height (priv->label_widget, &child_min, &child_nat);
*minimum = child_min;
*natural = child_nat;
}
}
else
{
*minimum = 0;
*natural = 0;
}
gtk_css_gadget_get_preferred_size (priv->border_gadget,
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))
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
gtk_widget_get_preferred_width (child, &child_min, &child_nat);
}
else
{
if (for_size > 0)
gtk_widget_get_preferred_height_for_width (child, for_size, &child_min, &child_nat);
else
gtk_widget_get_preferred_height (child, &child_min, &child_nat);
}
*minimum = child_min;
*natural = child_nat;
}
else
{
*minimum = 0;
*natural = 0;
}
}
static void
gtk_frame_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_frame_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
GTK_ORIENTATION_HORIZONTAL,
height,
minimum, natural,
NULL, NULL);
}
static void
gtk_frame_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
-1,
minimum, natural,
NULL, NULL);
}
static void
gtk_frame_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
gtk_css_gadget_get_preferred_size (GTK_FRAME (widget)->priv->gadget,
GTK_ORIENTATION_VERTICAL,
width,
minimum, natural,
NULL, NULL);
}
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);
}