gtk2/gtk/gtkalignment.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
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* 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.
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*
* 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.
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*/
/*
* 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/.
*/
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#include "gtkalignment.h"
#include "gtkintl.h"
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enum {
PROP_0,
PROP_XALIGN,
PROP_YALIGN,
PROP_XSCALE,
PROP_YSCALE,
PROP_PADDING_TOP,
PROP_PADDING_BOTTOM,
PROP_PADDING_LEFT,
PROP_PADDING_RIGHT,
PROP_LAST
};
#define GTK_ALIGNMENT_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_ALIGNMENT, GtkAlignmentPrivate))
struct _GtkAlignmentPrivate
{
guint padding_top;
guint padding_bottom;
guint padding_left;
guint padding_right;
};
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static void gtk_alignment_class_init (GtkAlignmentClass *klass);
static void gtk_alignment_init (GtkAlignment *alignment);
static void gtk_alignment_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_alignment_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_alignment_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_alignment_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
GType
configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on Sun May 3 13:38:22 1998 Owen Taylor <otaylor@gtk.org> * configure.in acheader.h gdk/gdkwindow.c Check for Shape extension both on the client and server side. (And, more importantly, check for the shape extension so we may include -lXext even when compiling with --disable-xshm) Don't set override_redirect on all shaped windows. It isn't necessary. * gdk/gdkwindow.c: Set ->colormap to NULL for root and foreign windows. Use this to check if we need to get the colormap from X. Fri May 1 22:32:47 1998 Owen Taylor <otaylor@gtk.org> * gtk/gtkbutton.c (gtk_button_paint): Draw the areas between the default and the button always in GTK_STATE_NORMAL. * gtk/gtkrange.c (gtk_range_style_set): Added a style_set callback. Fri May 1 16:40:57 1998 Owen Taylor <otaylor@gtk.org> * gdk/gdkpixmap.c (gdk_pixmap_colormap_create_from_xpmp[_d]): Fix a buffer overflow on pixmaps that claim to have more than 31 characters per pixel. (gdk_pixmap_read_string): Don't wrap around strings longer than half of address space ;-) * gtk/gtk[vh]ruler.c gtk/gtkinputdialog.c: Expand some buffers that were used for printing integers. * */* (almost): Style: All int foo () { ... } changed to int foo (void) { ... } ^^^^^^^ This is why some many files changed Even where there were proper prototypes elsewhere. * gdk/gxid.c (handle_claim_device): Some extra checks. It isn't safe against being fed bad X id's, but at least it should be safe against deleting all your files.
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gtk_alignment_get_type (void)
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{
static GType alignment_type = 0;
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if (!alignment_type)
{
static const GTypeInfo alignment_info =
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{
sizeof (GtkAlignmentClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_alignment_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkAlignment),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_alignment_init,
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};
alignment_type = g_type_register_static (GTK_TYPE_BIN, "GtkAlignment",
&alignment_info, 0);
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}
return alignment_type;
}
static void
gtk_alignment_class_init (GtkAlignmentClass *class)
{
GObjectClass *gobject_class;
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GtkWidgetClass *widget_class;
gobject_class = (GObjectClass*) class;
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widget_class = (GtkWidgetClass*) class;
gobject_class->set_property = gtk_alignment_set_property;
gobject_class->get_property = gtk_alignment_get_property;
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widget_class->size_request = gtk_alignment_size_request;
widget_class->size_allocate = gtk_alignment_size_allocate;
g_object_class_install_property (gobject_class,
PROP_XALIGN,
g_param_spec_float("xalign",
P_("Horizontal alignment"),
P_("Horizontal position of child in available space. 0.0 is left aligned, 1.0 is right aligned"),
0.0,
1.0,
0.5,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_YALIGN,
g_param_spec_float("yalign",
P_("Vertical alignment"),
P_("Vertical position of child in available space. 0.0 is top aligned, 1.0 is bottom aligned"),
0.0,
1.0,
0.5,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_XSCALE,
g_param_spec_float("xscale",
P_("Horizontal scale"),
P_("If available horizontal space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all"),
0.0,
1.0,
1.0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (gobject_class,
PROP_YSCALE,
g_param_spec_float("yscale",
P_("Vertical scale"),
P_("If available vertical space is bigger than needed for the child, how much of it to use for the child. 0.0 means none, 1.0 means all"),
0.0,
1.0,
1.0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
/**
* GtkAlignment:top-padding:
*
* The padding to insert at the top of the widget.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_PADDING_TOP,
g_param_spec_uint("top_padding",
P_("Top Padding"),
P_("The padding to insert at the top of the widget."),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
/**
* GtkAlignment:top-padding:
*
* The padding to insert at the bottom of the widget.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_PADDING_BOTTOM,
g_param_spec_uint("bottom_padding",
P_("Bottom Padding"),
P_("The padding to insert at the bottom of the widget."),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
/**
* GtkAlignment:top-padding:
*
* The padding to insert at the left of the widget.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_PADDING_LEFT,
g_param_spec_uint("left_padding",
P_("Left Padding"),
P_("The padding to insert at the left of the widget."),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
/**
* GtkAlignment:top-padding:
*
* The padding to insert at the right of the widget.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_PADDING_RIGHT,
g_param_spec_uint("right_padding",
P_("Right Padding"),
P_("The padding to insert at the right of the widget."),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_type_class_add_private (gobject_class, sizeof (GtkAlignmentPrivate));
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}
static void
gtk_alignment_init (GtkAlignment *alignment)
{
GtkAlignmentPrivate *priv;
added args ::show_text, ::text_xalign, ::text_yalign, ::activity_mode. Sun Nov 22 16:21:28 1998 Tim Janik <timj@gtk.org> * gtk/gtkprogress.c: added args ::show_text, ::text_xalign, ::text_yalign, ::activity_mode. * gtk/gtkprogressbar.c: added construct arg ::adjustment. added args ::bar_style, ::orientation, ::discrete_blocks, ::activity_step, ::activity_blocks. (gtk_progress_bar_new): (gtk_progress_bar_new_with_adjustment): use gtk_widget_new(). (gtk_progress_bar_construct): deprecated. * gtk/gtkvscrollbar.c: (gtk_vscrollbar_draw_step_back): (gtk_vscrollbar_draw_step_forw): use "vscrollbar" as detail for gtk_paint_arrow, to be consistent with hscrollbar. * gtk/gtktext.c added construct args ::hadjustment, ::vadjustment. added args ::line_wrap, ::word_wrap. (gtk_text_class_init): added scroll_adjustments signal. (gtk_text_new): use gtk_widget_new. (gtk_text_disconnect): remove adjustement with gtk_text_set_adjustments, so we don't screw the reference counts and don't leave signals connected. (gtk_text_destroy): disconnect adjustments signals. (gtk_text_finalize): unref adjustments. * gtk/gtkctree.c: added construct args ::n_columns and ::tree_column. added args ::indent, ::spacing, ::show_stub, ::reorderable, ::use_drag_icons, ::line_style and ::expander_style. (gtk_ctree_set_show_stub): renamed from gtk_ctree_show_stub, which is deprecated now. * gtk/gtkclist.h: remove GTK_CLIST_CONSTRUCT flag. * gtk/gtkclist.c: removed ::vadjustment and ::hadjustment args, introduced ::scroll_adjustments signal. added ::shadow_type, ::selection_mode and ::row_height args. added n_columns construct arg. (gtk_clist_construct): call gtk_object_constructed(). (gtk_clist_set_row_height): if height is passed as 0, revert to automatic height calculation. (gtk_clist_destroy): before unrefing the adjustments, disconnect our signal handlers. Fri Nov 21 22:34:58 1998 Tim Janik <timj@gtk.org> * gtk/gtkwidget.c (gtk_widget_new): call gtk_object_default_construct like gtk_object_new. (gtk_widget_destroy): assert that we only destroy constructed widgets. * gtk/gtkobject.h (enum GtkArgFlags): new flag GTK_ARG_CONSTRUCT_ONLY to identify args that may only be used for construction. GTK_ARG_CONSTRUCT maybe used as normal arguments besides construction time. * gtk/gtkobject.c (gtk_object_new): invoke gtk_object_default_construct at the end if the object is not fully constructed. (gtk_object_newv): likewise. (gtk_object_destroy): assert that we only destroy constructed objects. (gtk_object_init): setup GTK_CONSTRUCTED from the objects real klass. (gtk_object_default_construct): new function to complete default construction of an object by applying missing construtor args with default values of 0, 0.0 or NULL. (gtk_object_constructed): new function to mark an object as being constructed (used from within constructors). * gtk/gtkarg.c (gtk_arg_type_new_static): return the args info pointer so it is immediatedly available for the caller. * gtk/gtktypeutils.c (gtk_type_new): pass an object's real class to the object initilizer (GtkObjectInitFunc takes a second arg now, the real klass), and asure that object initializers may temporarily alter the class pointer. Fri Nov 20 08:00:30 1998 Tim Janik <timj@gtk.org> * gtk/testgtk.c: change all occourances of gtk_container_add ( scrolled_window, widget) to gtk_scrolled_window_add_with_viewport (...) for widget!=(clist, ctree, text, viewport). * gtk/gtkcombo.c: (gtk_combo_init): use gtk_scrolled_window_add_with_viewport() to add children to the scrolled window. * gtk/gtkscrolledwindow.h: * gtk/gtkscrolledwindow.c: changed scrolled_window->viewport to scrolled_window->child, and use gtk_widget_scroll_adjustements() to set the scroll adjustments for the widget, we do not create an additional viewport anymore. added ::hadjustment and ::vadjustment constructor args. (gtk_scrolled_window_new): use gtk_widget_new() to create the widget. (gtk_scrolled_window_set_hadjustment): (gtk_scrolled_window_set_vadjustment): new functions that superceed gtk_scrolled_window_construct. (gtk_scrolled_window_construct): deprecated this function. * gtk/gtkhscrollbar.c: * gtk/gtkvscrollbar.c: * gtk/gtkhscale.c: * gtk/gtkvscale.c: support a constructor arg "::adjustment", and use gtk_widget_new() for the widget creation. * gtk/gtkrange.c: added ::update_policy arg. (gtk_range_set_adjustment): if adjustment is passed in as NULL, create a default adjustment so this function can be used for derived widgets that depend on the adjustment's existance. (gtk_range_destroy): disconnect the adjustment signal, so we don't get called after we got destroyed, we don't destroy the adjustment in here, because it might have been provided from another widget. * gtk/gtkviewport.c: introduced ::scroll_adjustments signal. (gtk_viewport_destroy): same as gtk_range_destroy. * gtk/gtkprogress.c (gtk_progress_destroy): same as gtk_range_destroy. * gtk/gtkwidget.h: * gtk/gtkwidget.c: changed gtk_widget_activate() to return a gboolean, indicating whether this widget supports activation. added gtk_widget_scroll_adjustements() to set the scrolling adjustments of a widget. Wed Nov 19 01:22:42 1998 Tim Janik <timj@gtk.org> * gtk/gtkoptionmenu.c: (gtk_option_menu_remove_contents): (gtk_option_menu_update_contents): removed gtk_container_[un]block_resize() pairs. * gtk/gtknotebook.h: * gtk/gtknotebook.c: removed the tab_border field, since it shouldn't be used outside of gtknotebook.c anyways. made ARG_TAB_BORDER a wrtie-only argument. * *.c: made deprecated functions issue a message: gtk_clist_set_border, gtk_container_block_resize, gtk_container_unblock_resize, gtk_container_need_resize, gtk_object_class_add_user_signal, gtk_spin_button_construct, gtk_scrolled_window_construct. removed non-functional functions: gtk_container_disable_resize, gtk_container_enable_resize, gtk_clist_set_policy. Wed Nov 18 22:54:36 1998 Tim Janik <timj@gtk.org> * gtk/gtkbox.c (gtk_box_init): * gtk/gtkdrawingarea.c (gtk_drawing_area_init): * gtk/gtkeventbox.c (gtk_event_box_init): * gtk/gtkfixed.c (gtk_fixed_init): * gtk/gtkframe.c (gtk_frame_init): * gtk/gtkhandlebox.c (gtk_handle_box_init): * gtk/gtkpacker.c (gtk_packer_init): * gtk/gtkmisc.c (gtk_misc_init): * gtk/gtkpreview.c (gtk_preview_init): * gtk/gtkprogress.c (gtk_progress_init): * gtk/gtkprogressbar.c (gtk_progress_bar_init): * gtk/gtkseparator.c (gtk_separator_init): * gtk/gtktable.c (gtk_table_init): * gtk/gtkviewport.c (gtk_viewport_init): * gtk/gtkalignment.c (gtk_alignment_init): removed setting of the GTK_BASIC flag. * gtk/gtkwidget.h: * gtk/gtkwidget.c: removed GTK_BASIC, GTK_WIDGET_BASIC and gtk_widget_basic. * miscellaneous GtkType and macro fixups.
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GTK_WIDGET_SET_FLAGS (alignment, GTK_NO_WINDOW);
Add a function gdk_window_invalidate_maybe_recurse() for use in "shallow Sun Nov 4 16:02:08 2001 Owen Taylor <otaylor@redhat.com> * gdk/gdkwindow.[ch]: Add a function gdk_window_invalidate_maybe_recurse() for use in "shallow invalidation" of a widget. (Windows belonging to the widget, but not to the widget's children) * gtk/gtkprivate.h gtk/gtkwidget.c gtk/gtksizegroup.c: Add private flags GTK_ALLOC_NEEDED, GTK_REQUEST_NEEDED. These flags are set up on ancestors up to the resize container on queue_resize. Size requests only actually take place if GTK_REQUEST_NEEDED, size allocations only take place if GTK_ALLOC_NEEDED or the size changed. * gtk/gtkcontainer.c gtk/gtkwidget.c: Remove container->resize_widgets and the RESIZE_NEEDED flag since the above flags are sufficient to figure out what needs to be resized/reallocated. Remove code manipulating container->resize_widget. * gtk/gtkwidget.[ch]: Add gtk_widget_set_redraw_on_alloc(); this allows widgets to turn off being automatically invalidated is when they are resized. * gtk/gtkwidget.[ch] (gtk_widget_size_allocate): Invalidation when a widget is resized or moved is "shallow" as described above - only the windows that need to be invalidated are invalidated. * gtk/gtkbox.c gtk/gtktable.c gtk/gtkalignment.c docs/Changes-2.0.txt: Make these widget's init functions call gtk_widget_set_redraw_on_allocate(widget,FALSE). * gtk/gtkwindow.c (gtk_window_configure_event): Call _gtk_container_queue_resize(), since we don't want redrawing. (Probably could be done for other calls to gtk_widget_queue_resize() in gtkwindow.c, but this is the most important one.) * gtk/gtkwindow.c (gtk_window_move_resize): Don't call gtk_widget_queue_draw() - size_allocate() handles that as appropriate. * gtk/gtkframe.c (gtk_frame_size_allocate): Invalidate instead of queue_clear() to avoid invalidating children.
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gtk_widget_set_redraw_on_allocate (GTK_WIDGET (alignment), FALSE);
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alignment->xalign = 0.5;
alignment->yalign = 0.5;
alignment->xscale = 1.0;
alignment->yscale = 1.0;
/* Initialize padding with default values: */
priv = GTK_ALIGNMENT_GET_PRIVATE (alignment);
priv->padding_top = 0;
priv->padding_bottom = 0;
priv->padding_left = 0;
priv->padding_right = 0;
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}
GtkWidget*
gtk_alignment_new (gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale)
{
GtkAlignment *alignment;
alignment = g_object_new (GTK_TYPE_ALIGNMENT, NULL);
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alignment->xalign = CLAMP (xalign, 0.0, 1.0);
alignment->yalign = CLAMP (yalign, 0.0, 1.0);
alignment->xscale = CLAMP (xscale, 0.0, 1.0);
alignment->yscale = CLAMP (yscale, 0.0, 1.0);
return GTK_WIDGET (alignment);
}
static void
gtk_alignment_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkAlignment *alignment;
GtkAlignmentPrivate *priv;
alignment = GTK_ALIGNMENT (object);
priv = GTK_ALIGNMENT_GET_PRIVATE (alignment);
switch (prop_id)
{
case PROP_XALIGN:
gtk_alignment_set (alignment,
g_value_get_float (value),
alignment->yalign,
alignment->xscale,
alignment->yscale);
break;
case PROP_YALIGN:
gtk_alignment_set (alignment,
alignment->xalign,
g_value_get_float (value),
alignment->xscale,
alignment->yscale);
break;
case PROP_XSCALE:
gtk_alignment_set (alignment,
alignment->xalign,
alignment->yalign,
g_value_get_float (value),
alignment->yscale);
break;
case PROP_YSCALE:
gtk_alignment_set (alignment,
alignment->xalign,
alignment->yalign,
alignment->xscale,
g_value_get_float (value));
break;
/* Padding: */
case PROP_PADDING_TOP:
gtk_alignment_set_padding (alignment,
g_value_get_uint (value),
priv->padding_bottom,
priv->padding_left,
priv->padding_right);
break;
case PROP_PADDING_BOTTOM:
gtk_alignment_set_padding (alignment,
priv->padding_top,
g_value_get_uint (value),
priv->padding_left,
priv->padding_right);
break;
case PROP_PADDING_LEFT:
gtk_alignment_set_padding (alignment,
priv->padding_top,
priv->padding_bottom,
g_value_get_uint (value),
priv->padding_right);
break;
case PROP_PADDING_RIGHT:
gtk_alignment_set_padding (alignment,
priv->padding_top,
priv->padding_bottom,
priv->padding_left,
g_value_get_uint (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_alignment_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkAlignment *alignment;
GtkAlignmentPrivate *priv;
alignment = GTK_ALIGNMENT (object);
priv = GTK_ALIGNMENT_GET_PRIVATE (alignment);
switch (prop_id)
{
case PROP_XALIGN:
g_value_set_float(value, alignment->xalign);
break;
case PROP_YALIGN:
g_value_set_float(value, alignment->yalign);
break;
case PROP_XSCALE:
g_value_set_float(value, alignment->xscale);
break;
case PROP_YSCALE:
g_value_set_float(value, alignment->yscale);
break;
/* Padding: */
case PROP_PADDING_TOP:
g_value_set_uint (value, priv->padding_top);
break;
case PROP_PADDING_BOTTOM:
g_value_set_uint (value, priv->padding_bottom);
break;
case PROP_PADDING_LEFT:
g_value_set_uint (value, priv->padding_left);
break;
case PROP_PADDING_RIGHT:
g_value_set_uint (value, priv->padding_right);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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void
gtk_alignment_set (GtkAlignment *alignment,
gfloat xalign,
gfloat yalign,
gfloat xscale,
gfloat yscale)
{
g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
xalign = CLAMP (xalign, 0.0, 1.0);
yalign = CLAMP (yalign, 0.0, 1.0);
xscale = CLAMP (xscale, 0.0, 1.0);
yscale = CLAMP (yscale, 0.0, 1.0);
if ( (alignment->xalign != xalign)
|| (alignment->yalign != yalign)
|| (alignment->xscale != xscale)
|| (alignment->yscale != yscale))
{
g_object_freeze_notify (G_OBJECT (alignment));
if (alignment->xalign != xalign)
{
alignment->xalign = xalign;
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g_object_notify (G_OBJECT (alignment), "xalign");
}
if (alignment->yalign != yalign)
{
alignment->yalign = yalign;
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g_object_notify (G_OBJECT (alignment), "yalign");
}
if (alignment->xscale != xscale)
{
alignment->xscale = xscale;
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g_object_notify (G_OBJECT (alignment), "xscale");
}
if (alignment->yscale != yscale)
{
alignment->yscale = yscale;
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g_object_notify (G_OBJECT (alignment), "yscale");
}
g_object_thaw_notify (G_OBJECT (alignment));
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if (GTK_BIN (alignment)->child)
gtk_widget_queue_resize (GTK_BIN (alignment)->child);
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gtk_widget_queue_draw (GTK_WIDGET (alignment));
}
}
static void
gtk_alignment_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkAlignment *alignment;
GtkBin *bin;
GtkAlignmentPrivate *priv;
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alignment = GTK_ALIGNMENT (widget);
bin = GTK_BIN (widget);
priv = GTK_ALIGNMENT_GET_PRIVATE (widget);
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requisition->width = GTK_CONTAINER (widget)->border_width * 2;
requisition->height = GTK_CONTAINER (widget)->border_width * 2;
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkRequisition child_requisition;
gtk_widget_size_request (bin->child, &child_requisition);
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requisition->width += child_requisition.width;
requisition->height += child_requisition.height;
/* Request extra space for the padding: */
requisition->width += (priv->padding_left + priv->padding_right);
requisition->height += (priv->padding_top + priv->padding_bottom);
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}
}
static void
gtk_alignment_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkAlignment *alignment;
GtkBin *bin;
GtkAllocation child_allocation;
GtkRequisition child_requisition;
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gint width, height;
gint border_width;
gint padding_horizontal, padding_vertical;
GtkAlignmentPrivate *priv;
gfloat xalign;
padding_horizontal = 0;
padding_vertical = 0;
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widget->allocation = *allocation;
alignment = GTK_ALIGNMENT (widget);
bin = GTK_BIN (widget);
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if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
gtk_widget_get_child_requisition (bin->child, &child_requisition);
border_width = GTK_CONTAINER (alignment)->border_width;
priv = GTK_ALIGNMENT_GET_PRIVATE (widget);
padding_horizontal = priv->padding_left + priv->padding_right;
padding_vertical = priv->padding_top + priv->padding_bottom;
width = allocation->width - padding_horizontal - 2 * border_width;
height = allocation->height - padding_vertical - 2 * border_width;
if (width > child_requisition.width)
child_allocation.width = (child_requisition.width *
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(1.0 - alignment->xscale) +
width * alignment->xscale);
else
child_allocation.width = width;
if (height > child_requisition.height)
child_allocation.height = (child_requisition.height *
(1.0 - alignment->yscale) +
height * alignment->yscale);
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else
child_allocation.height = height;
xalign = alignment->xalign;
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
xalign = 1.0 - xalign;
child_allocation.x = xalign * (width - child_allocation.width) + allocation->x + border_width + priv->padding_left;
child_allocation.y = alignment->yalign * (height - child_allocation.height) + allocation->y + border_width + priv->padding_top;
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gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
/**
* gtk_alignment_set_padding:
* @alignment: a #GtkAlignment
* @padding_top: the padding at the top of the widget
* @padding_bottom: the padding at the bottom of the widget
* @padding_left: the padding at the left of the widget
* @padding_right: the padding at the right of the widget.
*
* Sets the padding on the different sides of the widget.
* The padding adds blank space to the sides of the widget. For instance,
* this can be used to indent the child widget towards the right by adding
* padding on the left.
*
* Since: 2.4
*/
void
gtk_alignment_set_padding (GtkAlignment *alignment,
guint padding_top,
guint padding_bottom,
guint padding_left,
guint padding_right)
{
GtkAlignmentPrivate *priv;
g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
priv = GTK_ALIGNMENT_GET_PRIVATE (alignment);
g_object_freeze_notify (G_OBJECT (alignment));
if (priv->padding_top != padding_top)
{
priv->padding_top = padding_top;
g_object_notify (G_OBJECT (alignment), "top_padding");
}
if (priv->padding_bottom != padding_bottom)
{
priv->padding_bottom = padding_bottom;
g_object_notify (G_OBJECT (alignment), "bottom_padding");
}
if (priv->padding_left != padding_left)
{
priv->padding_left = padding_left;
g_object_notify (G_OBJECT (alignment), "left_padding");
}
if (priv->padding_right != padding_right)
{
priv->padding_right = padding_right;
g_object_notify (G_OBJECT (alignment), "right_padding");
}
g_object_thaw_notify (G_OBJECT (alignment));
/* Make sure that the widget and children are redrawn with the new setting: */
if (GTK_BIN (alignment)->child)
gtk_widget_queue_resize (GTK_BIN (alignment)->child);
gtk_widget_queue_draw (GTK_WIDGET (alignment));
}
/**
* gtk_alignment_get_padding:
* @alignment: a #GtkAlignment
* @padding_top: location to store the padding for the top of the widget, or %NULL
* @padding_bottom: location to store the padding for the bottom of the widget, or %NULL
* @padding_left: location to store the padding for the left of the widget, or %NULL
* @padding_right: location to store the padding for the right of the widget, or %NULL
*
* Gets the padding on the different sides of the widget.
* See gtk_alignment_set_padding ().
*
* Since: 2.4
*/
void
gtk_alignment_get_padding (GtkAlignment *alignment,
guint *padding_top,
guint *padding_bottom,
guint *padding_left,
guint *padding_right)
{
GtkAlignmentPrivate *priv;
g_return_if_fail (GTK_IS_ALIGNMENT (alignment));
priv = GTK_ALIGNMENT_GET_PRIVATE (alignment);
if(padding_top)
*padding_top = priv->padding_top;
if(padding_bottom)
*padding_bottom = priv->padding_bottom;
if(padding_left)
*padding_left = priv->padding_left;
if(padding_right)
*padding_right = priv->padding_right;
}