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overlay: add initial version of gtkoverlay

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Ignacio Casal Quinteiro 2011-05-19 18:53:05 +02:00 committed by Matthias Clasen
parent f50da3babe
commit cfb2a45f9a
12 changed files with 1383 additions and 0 deletions
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1
demos/gtk-demo/Makefile.am
View File

@ -30,6 +30,7 @@ demos = \
menus.c \
offscreen_window.c \
offscreen_window2.c \
overlay.c \
panes.c \
pickers.c \
pixbufs.c \

181
demos/gtk-demo/overlay.c Normal file
View File

@ -0,0 +1,181 @@
/* Overlay
*
* Stack widgets in static positions over a main widget
*/
#include <gtk/gtk.h>
GtkWidget *
do_overlay (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *view;
GtkWidget *sw;
GtkWidget *overlay;
GtkWidget *entry;
GtkWidget *label;
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_default_size (GTK_WINDOW (window),
450, 450);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
gtk_window_set_title (GTK_WINDOW (window), "Overlay");
gtk_container_set_border_width (GTK_CONTAINER (window), 0);
view = gtk_text_view_new ();
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_container_add (GTK_CONTAINER (sw), view);
overlay = gtk_overlay_new ();
gtk_container_add (GTK_CONTAINER (overlay), sw);
gtk_container_add (GTK_CONTAINER (window), overlay);
entry = gtk_entry_new ();
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
gtk_widget_set_halign (entry, GTK_ALIGN_END);
gtk_widget_set_valign (entry, GTK_ALIGN_END);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_END);
gtk_widget_set_valign (label, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_START);
gtk_widget_set_valign (entry, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_END);
gtk_widget_set_valign (entry, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_END);
gtk_widget_set_valign (label, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_START);
gtk_widget_set_valign (entry, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_END);
gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_END);
gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_START);
gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_START);
gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
gtk_widget_set_valign (entry, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_widget_set_valign (label, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 20);
gtk_widget_set_margin_right (label, 20);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
gtk_widget_set_valign (entry, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_widget_set_valign (label, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_set_margin_left (label, 10);
gtk_widget_set_margin_right (label, 10);
gtk_widget_set_margin_top (label, 5);
gtk_widget_set_margin_bottom (label, 5);
entry = gtk_entry_new ();
gtk_widget_set_halign (entry, GTK_ALIGN_CENTER);
gtk_widget_set_valign (entry, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), entry);
label = gtk_label_new ("Hello world");
gtk_widget_set_halign (label, GTK_ALIGN_CENTER);
gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), label);
gtk_widget_show_all (overlay);
}
if (!gtk_widget_get_visible (window))
{
gtk_widget_show (window);
}
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}

1
docs/reference/gtk/gtk-docs.sgml
View File

@ -242,6 +242,7 @@
<xi:include href="xml/gtknotebook.xml" />
<xi:include href="xml/gtktable.xml" />
<xi:include href="xml/gtkexpander.xml" />
<xi:include href="xml/gtkoverlay.xml" />
<xi:include href="xml/gtkorientable.xml" />
</chapter>

26
docs/reference/gtk/gtk3-sections.txt
View File

@ -7079,3 +7079,29 @@ GTK_LOCK_BUTTON_GET_CLASS
gtk_lock_button_get_type
GtkLockButtonPrivate
</SECTION>
<SECTION>
<FILE>gtkoverlay</FILE>
<TITLE>GtkOverlay</TITLE>
GtkOverlay
gtk_overlay_new
gtk_overlay_set_relative_widget
gtk_overlay_get_relative_widget
gtk_overlay_add
gtk_overlay_set_offset
gtk_overlay_get_offset
<SUBSECTION Standard>
GTK_TYPE_OVERLAY
GTK_OVERLAY
GTK_OVERLAY_CLASS
GTK_IS_OVERLAY
GTK_IS_OVERLAY_CLASS
GTK_OVERLAY_GET_CLASS
GtkOverlayClass
<SUBSECTION Private>
gtk_overlay_get_type
GtkOverlayPrivate
</SECTION>

1
docs/reference/gtk/gtk3.types
View File

@ -105,6 +105,7 @@ gtk_notebook_get_type
gtk_numerable_icon_get_type
gtk_offscreen_window_get_type
gtk_orientable_get_type
gtk_overlay_get_type
gtk_page_setup_get_type
gtk_page_setup_unix_dialog_get_type
gtk_paned_get_type

2
gtk/Makefile.am
View File

@ -256,6 +256,7 @@ gtk_public_h_sources = \
gtknumerableicon.h \
gtkoffscreenwindow.h \
gtkorientable.h \
gtkoverlay.h \
gtkpagesetup.h \
gtkpaned.h \
gtkpapersize.h \
@ -592,6 +593,7 @@ gtk_base_c_sources = \
gtknumerableicon.c \
gtkoffscreenwindow.c \
gtkorientable.c \
gtkoverlay.c \
gtkpagesetup.c \
gtkpaned.c \
gtkpango.c \

1
gtk/gtk.h
View File

@ -141,6 +141,7 @@
#include <gtk/gtknumerableicon.h>
#include <gtk/gtkoffscreenwindow.h>
#include <gtk/gtkorientable.h>
#include <gtk/gtkoverlay.h>
#include <gtk/gtkpagesetup.h>
#include <gtk/gtkpapersize.h>
#include <gtk/gtkpaned.h>

3
gtk/gtk.symbols
View File

@ -1625,6 +1625,9 @@ gtk_orientable_get_orientation
gtk_orientable_get_type
gtk_orientable_set_orientation
gtk_orientation_get_type
gtk_overlay_add_overlay
gtk_overlay_get_type
gtk_overlay_new
gtk_pack_direction_get_type
gtk_pack_type_get_type
gtk_page_orientation_get_type

635
gtk/gtkoverlay.c Normal file
View File

@ -0,0 +1,635 @@
/*
* gtkoverlay.c
* This file is part of gtk
*
* Copyright (C) 2011 - Ignacio Casal Quinteiro, Mike Krüger
*
* 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.
*/
#include "config.h"
#include "gtkoverlay.h"
#include "gtkbuildable.h"
#include "gtkscrolledwindow.h"
#include "gtkmainprivate.h"
#include "gtkmarshalers.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkoverlay
* @short_description: A container which overlays widgets on top of each other
* @title: GtkOverlay
*
* GtkOverlay is a container which contains a single main child, on top
* of which it can place <firstterm>overlay</firstterm> widgets. The
* position of each overlay widget is determined by its #GtkWidget::halign
* and #GtkWidget::valign properties. E.g. a widget with both alignments
* set to %GTK_ALIGN_START will be placed at the top left corner of the
* main widget, whereas an overlay with halign set to %GTK_ALIGN_CENTER
* and valign set to %GTK_ALIGN_END will be placed a the bottom edge of
* the main widget, horizontally centered. The position can be adjusted
* by setting the margin properties of the child to non-zero values.
*
* More complicated placement of overlays is possible by connecting
* to the #GtkOverlay::get-child-position signal.
*
* <refsect2 id="GtkOverlay-BUILDER-UI">
* <title>GtkOverlay as GtkBuildable</title>
* <para>
* The GtkOverlay implementation of the GtkBuildable interface
* supports placing a child as an overlay by specifying "overlay" as
* the "type" attribute of a <tag class="starttag">child</tag> element.
* </para>
* </refsect2>
*/
struct _GtkOverlayPrivate
{
GSList *children;
};
typedef struct _GtkOverlayChild GtkOverlayChild;
struct _GtkOverlayChild
{
GtkWidget *widget;
GdkWindow *window;
};
enum {
GET_CHILD_POSITION,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void gtk_overlay_buildable_init (GtkBuildableIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkOverlay, gtk_overlay, GTK_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_overlay_buildable_init))
static GdkWindow *
gtk_overlay_create_child_window (GtkOverlay *overlay,
GtkWidget *child)
{
GtkWidget *widget = GTK_WIDGET (overlay);
GtkAllocation allocation;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_get_allocation (child, &allocation);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes_mask = GDK_WA_X | GDK_WA_Y;
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
window = gdk_window_new (gtk_widget_get_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (window, overlay);
gtk_style_context_set_background (gtk_widget_get_style_context (widget), window);
gtk_widget_set_parent_window (child, window);
return window;
}
static void
gtk_overlay_child_allocate (GtkOverlayChild *child,
GtkAllocation *allocation)
{
gint left, right, top, bottom;
GtkAllocation child_allocation;
/* put the margins outside the window; also arrange things
* so that the adjusted child allocation still ends up at 0, 0
*/
left = gtk_widget_get_margin_left (child->widget);
right = gtk_widget_get_margin_right (child->widget);
top = gtk_widget_get_margin_top (child->widget);
bottom = gtk_widget_get_margin_bottom (child->widget);
child_allocation.x = - left;
child_allocation.y = - top;
child_allocation.width = allocation->width;
child_allocation.height = allocation->height;
allocation->x += left;
allocation->y += top;
allocation->width -= left + right;
allocation->height -= top + bottom;
if (child->window)
gdk_window_move_resize (child->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gtk_widget_size_allocate (child->widget, &child_allocation);
}
static void
gtk_overlay_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkBin *bin = GTK_BIN (widget);
GtkWidget *child;
if (minimum)
*minimum = 0;
if (natural)
*natural = 0;
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
gtk_widget_get_preferred_width (child, minimum, natural);
}
static void
gtk_overlay_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkBin *bin = GTK_BIN (widget);
GtkWidget *child;
if (minimum)
*minimum = 0;
if (natural)
*natural = 0;
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
gtk_widget_get_preferred_height (child, minimum, natural);
}
static void
gtk_overlay_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GSList *children;
GtkWidget *main_widget;
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->size_allocate (widget, allocation);
main_widget = gtk_bin_get_child (GTK_BIN (overlay));
if (!main_widget || !gtk_widget_get_visible (main_widget))
return;
gtk_widget_size_allocate (main_widget, allocation);
for (children = priv->children; children; children = children->next)
{
GtkOverlayChild *child;
GtkAllocation alloc;
gboolean result;
child = children->data;
if (gtk_widget_get_mapped (GTK_WIDGET (overlay)))
{
if (gtk_widget_get_visible (child->widget))
gdk_window_show (child->window);
else if (gdk_window_is_visible (child->window))
gdk_window_hide (child->window);
}
if (!gtk_widget_get_visible (child->widget))
continue;
g_signal_emit (overlay, signals[GET_CHILD_POSITION],
0, child->widget, &alloc, &result);
alloc.x += allocation->x;
alloc.y += allocation->y;
gtk_overlay_child_allocate (child, &alloc);
}
}
static GtkAlign
effective_align (GtkAlign align,
GtkTextDirection direction)
{
switch (align)
{
case GTK_ALIGN_START:
return direction == GTK_TEXT_DIR_RTL ? GTK_ALIGN_END : GTK_ALIGN_START;
case GTK_ALIGN_END:
return direction == GTK_TEXT_DIR_RTL ? GTK_ALIGN_START : GTK_ALIGN_END;
default:
return align;
}
}
static gboolean
gtk_overlay_get_child_position (GtkOverlay *overlay,
GtkWidget *widget,
GtkAllocation *alloc)
{
GtkWidget *main_widget;
GtkAllocation main_alloc;
GtkRequisition req;
GtkAlign halign;
GtkTextDirection direction;
main_widget = gtk_bin_get_child (GTK_BIN (overlay));
/* special-case scrolled windows */
if (GTK_IS_SCROLLED_WINDOW (main_widget))
{
GtkWidget *grandchild;
gint x, y;
grandchild = gtk_bin_get_child (GTK_BIN (main_widget));
gtk_widget_translate_coordinates (grandchild, main_widget, 0, 0, &x, &y);
main_alloc.x = x;
main_alloc.y = y;
main_alloc.width = gtk_widget_get_allocated_width (grandchild);
main_alloc.height = gtk_widget_get_allocated_height (grandchild);
}
else
{
main_alloc.x = 0;
main_alloc.y = 0;
main_alloc.width = gtk_widget_get_allocated_width (main_widget);
main_alloc.height = gtk_widget_get_allocated_height (main_widget);
}
gtk_widget_get_preferred_size (widget, NULL, &req);
alloc->x = main_alloc.x;
alloc->width = MIN (main_alloc.width, req.width);
direction = gtk_widget_get_direction (widget);
halign = gtk_widget_get_halign (widget);
switch (effective_align (halign, direction))
{
case GTK_ALIGN_START:
/* nothing to do */
break;
case GTK_ALIGN_FILL:
alloc->width = main_alloc.width;
break;
case GTK_ALIGN_CENTER:
alloc->x += main_alloc.width / 2 - req.width / 2;
break;
case GTK_ALIGN_END:
alloc->x += main_alloc.width - req.width;
break;
}
alloc->y = main_alloc.y;
alloc->height = MIN (main_alloc.height, req.height);
switch (gtk_widget_get_valign (widget))
{
case GTK_ALIGN_START:
/* nothing to do */
break;
case GTK_ALIGN_FILL:
alloc->height = main_alloc.height;
break;
case GTK_ALIGN_CENTER:
alloc->y += main_alloc.height / 2 - req.height / 2;
break;
case GTK_ALIGN_END:
alloc->y += main_alloc.height - req.height;
break;
}
return TRUE;
}
static void
gtk_overlay_realize (GtkWidget *widget)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
GSList *children;
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->realize (widget);
for (children = priv->children; children; children = children->next)
{
child = children->data;
if (child->window == NULL)
child->window = gtk_overlay_create_child_window (overlay, child->widget);
}
}
static void
gtk_overlay_unrealize (GtkWidget *widget)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
GSList *children;
for (children = priv->children; children; children = children->next)
{
child = children->data;
gtk_widget_set_parent_window (child->widget, NULL);
gdk_window_set_user_data (child->window, NULL);
gdk_window_destroy (child->window);
child->window = NULL;
}
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->unrealize (widget);
}
static void
gtk_overlay_map (GtkWidget *widget)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
GSList *children;
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->map (widget);
for (children = priv->children; children; children = children->next)
{
child = children->data;
if (child->window != NULL &&
gtk_widget_get_visible (child->widget) &&
gtk_widget_get_child_visible (child->widget))
gdk_window_show (child->window);
}
}
static void
gtk_overlay_unmap (GtkWidget *widget)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
GSList *children;
for (children = priv->children; children; children = children->next)
{
child = children->data;
if (child->window != NULL &&
gdk_window_is_visible (child->window))
gdk_window_hide (child->window);
}
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->unmap (widget);
}
static gboolean
gtk_overlay_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkOverlay *overlay = GTK_OVERLAY (widget);
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
GSList *children;
for (children = priv->children; children; children = children->next)
{
child = children->data;
if (gtk_cairo_should_draw_window (cr, child->window))
{
cairo_save (cr);
gtk_cairo_transform_to_window (cr, widget, child->window);
gtk_render_background (gtk_widget_get_style_context (widget),
cr,
0, 0,
gdk_window_get_width (child->window),
gdk_window_get_height (child->window));
cairo_restore (cr);
}
}
GTK_WIDGET_CLASS (gtk_overlay_parent_class)->draw (widget, cr);
return FALSE;
}
static void
gtk_overlay_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkOverlayPrivate *priv = GTK_OVERLAY (container)->priv;
GtkOverlayChild *child;
GSList *children;
for (children = priv->children; children; children = children->next)
{
child = children->data;
if (child->widget == widget)
{
if (child->window != NULL)
{
gdk_window_set_user_data (child->window, NULL);
gdk_window_destroy (child->window);
}
gtk_widget_unparent (widget);
priv->children = g_slist_delete_link (priv->children, children);
g_slice_free (GtkOverlayChild, child);
return;
}
}
GTK_CONTAINER_CLASS (gtk_overlay_parent_class)->remove (container, widget);
}
static void
gtk_overlay_forall (GtkContainer *overlay,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkOverlayPrivate *priv = GTK_OVERLAY (overlay)->priv;
GtkOverlayChild *child;
GSList *children;
GtkWidget *main_widget;
main_widget = gtk_bin_get_child (GTK_BIN (overlay));
if (main_widget)
(* callback) (main_widget, callback_data);
children = priv->children;
while (children)
{
child = children->data;
children = children->next;
(* callback) (child->widget, callback_data);
}
}
static void
gtk_overlay_class_init (GtkOverlayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
widget_class->get_preferred_width = gtk_overlay_get_preferred_width;
widget_class->get_preferred_height = gtk_overlay_get_preferred_height;
widget_class->size_allocate = gtk_overlay_size_allocate;
widget_class->realize = gtk_overlay_realize;
widget_class->unrealize = gtk_overlay_unrealize;
widget_class->map = gtk_overlay_map;
widget_class->unmap = gtk_overlay_unmap;
widget_class->draw = gtk_overlay_draw;
container_class->remove = gtk_overlay_remove;
container_class->forall = gtk_overlay_forall;
klass->get_child_position = gtk_overlay_get_child_position;
/**
* GtkOverlay::get-child-position:
* @overlay: the #GtkOverlay
* @widget: the child widget to position
* @allocation: (out): return location for the allocation
*
* The ::get-child-position signal is emitted to determine
* the position and size of any overlay child widgets. A
* handler for this signal should fill @allocation with
* the desired position and size for @widget, relative to
* the 'main' child of @overlay.
*
* The default handler for this signal uses the @widget's
* halign and valign properties to determine the position
* and gives the widget its natural size (except that an
* alignment of %GTK_ALIGN_FILL will cause the overlay to
* be full-width/height). If the main child is a
* #GtkScrolledWindow, the overlays are placed relative
* to its contents.
*
* Return: %TRUE if the @allocation has been filled
*/
signals[GET_CHILD_POSITION] =
g_signal_new (I_("get-child-position"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkOverlayClass, get_child_position),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__OBJECT_BOXED,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_WIDGET,
GDK_TYPE_RECTANGLE | G_SIGNAL_TYPE_STATIC_SCOPE);
g_type_class_add_private (object_class, sizeof (GtkOverlayPrivate));
}
static void
gtk_overlay_init (GtkOverlay *overlay)
{
overlay->priv = G_TYPE_INSTANCE_GET_PRIVATE (overlay, GTK_TYPE_OVERLAY, GtkOverlayPrivate);
gtk_widget_set_has_window (GTK_WIDGET (overlay), FALSE);
}
static void
gtk_overlay_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (type && strcmp (type, "overlay") == 0)
gtk_overlay_add_overlay (GTK_OVERLAY (buildable), GTK_WIDGET (child));
else if (!type)
gtk_container_add (GTK_CONTAINER (buildable), GTK_WIDGET (child));
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (buildable, type);
}
static void
gtk_overlay_buildable_init (GtkBuildableIface *iface)
{
iface->add_child = gtk_overlay_buildable_add_child;
}
/**
* gtk_overlay_new:
*
* Creates a new #GtkOverlay.
*
* Returns: a new #GtkOverlay object.
*
* Since: 3.2
*/
GtkWidget *
gtk_overlay_new (void)
{
return g_object_new (GTK_TYPE_OVERLAY, NULL);
}
/**
* gtk_overlay_add_overlay:
* @overlay: a #GtkOverlay
* @widget: a #GtkWidget to be added to the container
*
* Adds @widget to @overlay.
*
* The widget will be stacked on top of the main widget
* added with gtk_container_add().
*
* The position at which @widget is placed is determined
* from its #GtkWidget::halign and #GtkWidget::valign properties.
*
* Since: 3.2
*/
void
gtk_overlay_add_overlay (GtkOverlay *overlay,
GtkWidget *widget)
{
GtkOverlayPrivate *priv = overlay->priv;
GtkOverlayChild *child;
g_return_if_fail (GTK_IS_OVERLAY (overlay));
g_return_if_fail (GTK_IS_WIDGET (widget));
child = g_slice_new0 (GtkOverlayChild);
child->widget = widget;
gtk_widget_set_parent (widget, GTK_WIDGET (overlay));
priv->children = g_slist_append (priv->children, child);
if (gtk_widget_get_realized (GTK_WIDGET (overlay)))
child->window = gtk_overlay_create_child_window (overlay, widget);
}

79
gtk/gtkoverlay.h Normal file
View File

@ -0,0 +1,79 @@
/*
* gtkoverlay.h
* This file is part of gtk
*
* Copyright (C) 2011 - Ignacio Casal Quinteiro
*
* 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.
*/
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#ifndef __GTK_OVERLAY_H__
#define __GTK_OVERLAY_H__
#include <gtk/gtkbin.h>
G_BEGIN_DECLS
#define GTK_TYPE_OVERLAY (gtk_overlay_get_type ())
#define GTK_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_OVERLAY, GtkOverlay))
#define GTK_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_OVERLAY, GtkOverlayClass))
#define GTK_IS_OVERLAY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_OVERLAY))
#define GTK_IS_OVERLAY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_OVERLAY))
#define GTK_OVERLAY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_OVERLAY, GtkOverlayClass))
typedef struct _GtkOverlay GtkOverlay;
typedef struct _GtkOverlayClass GtkOverlayClass;
typedef struct _GtkOverlayPrivate GtkOverlayPrivate;
struct _GtkOverlay
{
GtkBin parent;
GtkOverlayPrivate *priv;
};
struct _GtkOverlayClass
{
GtkBinClass parent_class;
gboolean (*get_child_position) (GtkOverlay *overlay,
GtkWidget *widget,
GtkAllocation *allocation);
/* Padding for future expansion */
void (*_gtk_reserved1) (void);
void (*_gtk_reserved2) (void);
void (*_gtk_reserved3) (void);
void (*_gtk_reserved4) (void);
void (*_gtk_reserved5) (void);
void (*_gtk_reserved6) (void);
void (*_gtk_reserved7) (void);
void (*_gtk_reserved8) (void);
};
GType gtk_overlay_get_type (void) G_GNUC_CONST;
GtkWidget *gtk_overlay_new (void);
void gtk_overlay_add_overlay (GtkOverlay *overlay,
GtkWidget *widget);
G_END_DECLS
#endif /* __GTK_OVERLAY_H__ */

6
tests/Makefile.am
View File

@ -71,6 +71,7 @@ noinst_PROGRAMS = $(TEST_PROGS) \
testoffscreen \
testoffscreenwindow \
testorientable \
testoverlay \
testprint \
testrecentchooser \
testrecentchoosermenu \
@ -177,6 +178,7 @@ testoffscreenwindow_DEPENDENCIES = $(TEST_DEPS)
testappchooser_DEPENDENCIES = $(TEST_DEPS)
testappchooserbutton_DEPENDENCIES = $(TEST_DEPS)
testorientable_DEPENDENCIES = $(TEST_DEPS)
testoverlay_DEPENDENCIES = $(TEST_DEPS)
testprint_DEPENDENCIES = $(TEST_DEPS)
testrecentchooser_DEPENDENCIES = $(TEST_DEPS)
testrecentchoosermenu_DEPENDENCIES = $(TEST_DEPS)
@ -266,6 +268,7 @@ testoffscreenwindow_LDADD = $(LDADDS)
testappchooser_LDADD = $(LDADDS)
testappchooserbutton_LDADD = $(LDADDS)
testorientable_LDADD = $(LDADDS)
testoverlay_LDADD = $(LDADDS)
testprint_LDADD = $(LDADDS)
testrecentchooser_LDADD = $(LDADDS)
testrecentchoosermenu_LDADD = $(LDADDS)
@ -441,6 +444,9 @@ testoffscreen_SOURCES = \
testoffscreenwindow_SOURCES = \
testoffscreenwindow.c
testoverlay_SOURCES = \
testoverlay.c
testappchooser_SOURCES = \
testappchooser.c

447
tests/testoverlay.c Normal file
View File

@ -0,0 +1,447 @@
#include <string.h>
#include <gtk/gtk.h>
/* test that margins and non-zero allocation x/y
* of the main widget are handled correctly
*/
static GtkWidget *
test_nonzerox (void)
{
GtkWidget *win;
GtkWidget *grid;
GtkWidget *overlay;
GtkWidget *text;
GtkWidget *child;
GdkRGBA color;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Non-zero X");
grid = gtk_grid_new ();
g_object_set (grid, "margin", 5, NULL);
gtk_container_add (GTK_CONTAINER (win), grid);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Above"), 1, 0, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Below"), 1, 2, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Left"), 0, 1, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Right"), 2, 1, 1, 1);
overlay = gtk_overlay_new ();
gdk_rgba_parse (&color, "red");
gtk_widget_override_background_color (overlay, 0, &color);
gtk_grid_attach (GTK_GRID (grid), overlay, 1, 1, 1, 1);
text = gtk_text_view_new ();
gtk_widget_set_size_request (text, 200, 200);
gtk_widget_set_hexpand (text, TRUE);
gtk_widget_set_vexpand (text, TRUE);
gtk_container_add (GTK_CONTAINER (overlay), text);
child = gtk_label_new ("I'm the overlay");
gtk_widget_set_halign (child, GTK_ALIGN_START);
gtk_widget_set_valign (child, GTK_ALIGN_START);
g_object_set (child, "margin", 3, NULL);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
child = gtk_label_new ("No, I'm the overlay");
gtk_widget_set_halign (child, GTK_ALIGN_END);
gtk_widget_set_valign (child, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 3, NULL);
return win;
}
static gboolean
get_child_position (GtkOverlay *overlay,
GtkWidget *widget,
GtkAllocation *alloc,
GtkWidget *relative)
{
GtkRequisition req;
GtkWidget *child;
GtkAllocation main_alloc;
gint x, y;
child = gtk_bin_get_child (GTK_BIN (overlay));
gtk_widget_translate_coordinates (relative, child, 0, 0, &x, &y);
main_alloc.x = x;
main_alloc.y = y;
main_alloc.width = gtk_widget_get_allocated_width (relative);
main_alloc.height = gtk_widget_get_allocated_height (relative);
gtk_widget_get_preferred_size (widget, NULL, &req);
alloc->x = main_alloc.x;
alloc->width = MIN (main_alloc.width, req.width);
if (gtk_widget_get_halign (widget) == GTK_ALIGN_END)
alloc->x += main_alloc.width - req.width;
alloc->y = main_alloc.y;
alloc->height = MIN (main_alloc.height, req.height);
if (gtk_widget_get_valign (widget) == GTK_ALIGN_END)
alloc->y += main_alloc.height - req.height;
return TRUE;
}
/* test custom positioning */
static GtkWidget *
test_relative (void)
{
GtkWidget *win;
GtkWidget *grid;
GtkWidget *overlay;
GtkWidget *text;
GtkWidget *child;
GdkRGBA color;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Custom positioning");
overlay = gtk_overlay_new ();
gdk_rgba_parse (&color, "yellow");
gtk_widget_override_background_color (overlay, 0, &color);
gtk_container_add (GTK_CONTAINER (win), overlay);
grid = gtk_grid_new ();
gtk_container_add (GTK_CONTAINER (overlay), grid);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Above"), 1, 0, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Below"), 1, 2, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Left"), 0, 1, 1, 1);
gtk_grid_attach (GTK_GRID (grid), gtk_label_new ("Right"), 2, 1, 1, 1);
text = gtk_text_view_new ();
gtk_widget_set_size_request (text, 200, 200);
g_object_set (text, "margin", 5, NULL);
gtk_widget_set_hexpand (text, TRUE);
gtk_widget_set_vexpand (text, TRUE);
gtk_grid_attach (GTK_GRID (grid), text, 1, 1, 1, 1);
g_signal_connect (overlay, "get-child-position",
G_CALLBACK (get_child_position), text);
child = gtk_label_new ("Top left overlay");
gtk_widget_set_halign (child, GTK_ALIGN_START);
gtk_widget_set_valign (child, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 1, NULL);
child = gtk_label_new ("Bottom right overlay");
gtk_widget_set_halign (child, GTK_ALIGN_END);
gtk_widget_set_valign (child, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 1, NULL);
return win;
}
/* test GTK_ALIGN_FILL handling */
static GtkWidget *
test_fullwidth (void)
{
GtkWidget *win;
GtkWidget *overlay;
GtkWidget *text;
GtkWidget *child;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Full-width");
overlay = gtk_overlay_new ();
gtk_container_add (GTK_CONTAINER (win), overlay);
text = gtk_text_view_new ();
gtk_widget_set_size_request (text, 200, 200);
gtk_widget_set_hexpand (text, TRUE);
gtk_widget_set_vexpand (text, TRUE);
gtk_container_add (GTK_CONTAINER (overlay), text);
child = gtk_label_new ("Fullwidth top overlay");
gtk_widget_set_halign (child, GTK_ALIGN_FILL);
gtk_widget_set_valign (child, GTK_ALIGN_START);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 4, NULL);
return win;
}
/* test that scrolling works as expected */
static GtkWidget *
test_scrolling (void)
{
GtkWidget *win;
GtkWidget *overlay;
GtkWidget *sw;
GtkWidget *text;
GtkWidget *child;
GtkTextBuffer *buffer;
gchar *contents;
gsize len;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Scrolling");
overlay = gtk_overlay_new ();
gtk_container_add (GTK_CONTAINER (win), overlay);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (sw), 200);
gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 200);
gtk_container_add (GTK_CONTAINER (overlay), sw);
text = gtk_text_view_new ();
buffer = gtk_text_buffer_new (NULL);
if (!g_file_get_contents ("testoverlay.c", &contents, &len, NULL))
{
contents = g_strdup ("Text should go here...");
len = strlen (contents);
}
gtk_text_buffer_set_text (buffer, contents, len);
g_free (contents);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (text), buffer);
gtk_widget_set_hexpand (text, TRUE);
gtk_widget_set_vexpand (text, TRUE);
gtk_container_add (GTK_CONTAINER (sw), text);
child = gtk_label_new ("This should be visible");
gtk_widget_set_halign (child, GTK_ALIGN_CENTER);
gtk_widget_set_valign (child, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 4, NULL);
return win;
}
static const gchar *buffer =
"<interface>"
" <object class='GtkWindow' id='window'>"
" <property name='title'>GtkBuilder support</property>"
" <child>"
" <object class='GtkOverlay' id='overlay'>"
" <child type='overlay'>"
" <object class='GtkLabel' id='overlay-child'>"
" <property name='label'>Witty remark goes here</property>"
" <property name='halign'>end</property>"
" <property name='valign'>end</property>"
" <property name='margin'>4</property>"
" </object>"
" </child>"
" <child>"
" <object class='GtkGrid' id='grid'>"
" <child>"
" <object class='GtkLabel' id='left'>"
" <property name='label'>Left</property>"
" </object>"
" <packing>"
" <property name='left_attach'>0</property>"
" <property name='top_attach'>0</property>"
" </packing>"
" </child>"
" <child>"
" <object class='GtkLabel' id='right'>"
" <property name='label'>Right</property>"
" </object>"
" <packing>"
" <property name='left_attach'>2</property>"
" <property name='top_attach'>0</property>"
" </packing>"
" </child>"
" <child>"
" <object class='GtkTextView' id='text'>"
" <property name='width-request'>200</property>"
" <property name='height-request'>200</property>"
" <property name='hexpand'>True</property>"
" <property name='vexpand'>True</property>"
" </object>"
" <packing>"
" <property name='left_attach'>1</property>"
" <property name='top_attach'>0</property>"
" </packing>"
" </child>"
" </object>"
" </child>"
" </object>"
" </child>"
" </object>"
"</interface>";
/* test that overlays can be constructed with GtkBuilder */
static GtkWidget *
test_builder (void)
{
GtkBuilder *builder;
GtkWidget *win;
GError *error;
builder = gtk_builder_new ();
error = NULL;
if (!gtk_builder_add_from_string (builder, buffer, -1, &error))
{
g_warning ("%s", error->message);
g_error_free (error);
return NULL;
}
win = (GtkWidget *)gtk_builder_get_object (builder, "window");
g_object_ref (win);
g_object_unref (builder);
return win;
}
static void
on_enter (GtkWidget *overlay, GdkEventCrossing *event, GtkWidget *child)
{
if (event->window != gtk_widget_get_window (child))
return;
if (gtk_widget_get_halign (child) == GTK_ALIGN_START)
gtk_widget_set_halign (child, GTK_ALIGN_END);
else
gtk_widget_set_halign (child, GTK_ALIGN_START);
gtk_widget_queue_resize (overlay);
}
static GtkWidget *
test_chase (void)
{
GtkWidget *win;
GtkWidget *overlay;
GtkWidget *sw;
GtkWidget *text;
GtkWidget *child;
GtkTextBuffer *buffer;
gchar *contents;
gsize len;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Chase");
overlay = gtk_overlay_new ();
gtk_widget_set_events (overlay, GDK_ENTER_NOTIFY_MASK|GDK_LEAVE_NOTIFY_MASK);
gtk_container_add (GTK_CONTAINER (win), overlay);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_min_content_width (GTK_SCROLLED_WINDOW (sw), 200);
gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (sw), 200);
gtk_container_add (GTK_CONTAINER (overlay), sw);
text = gtk_text_view_new ();
buffer = gtk_text_buffer_new (NULL);
if (!g_file_get_contents ("testoverlay.c", &contents, &len, NULL))
{
contents = g_strdup ("Text should go here...");
len = strlen (contents);
}
gtk_text_buffer_set_text (buffer, contents, len);
g_free (contents);
gtk_text_view_set_buffer (GTK_TEXT_VIEW (text), buffer);
gtk_widget_set_hexpand (text, TRUE);
gtk_widget_set_vexpand (text, TRUE);
gtk_container_add (GTK_CONTAINER (sw), text);
child = gtk_label_new ("Try to enter");
gtk_widget_set_halign (child, GTK_ALIGN_START);
gtk_widget_set_valign (child, GTK_ALIGN_END);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
g_object_set (child, "margin", 4, NULL);
g_signal_connect (overlay, "enter-notify-event",
G_CALLBACK (on_enter), child);
return win;
}
static GtkWidget *
test_stacking (void)
{
GtkWidget *win;
GtkWidget *overlay;
GtkWidget *main_child;
GtkWidget *label;
GtkWidget *child;
GtkWidget *grid;
GtkWidget *check1;
GtkWidget *check2;
GdkRGBA color;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (win), "Stacking");
grid = gtk_grid_new ();
overlay = gtk_overlay_new ();
main_child = gtk_event_box_new ();
gdk_rgba_parse (&color, "green");
gtk_widget_override_background_color (main_child, 0, &color);
gtk_widget_set_hexpand (main_child, TRUE);
gtk_widget_set_vexpand (main_child, TRUE);
label = gtk_label_new ("Main child");
child = gtk_label_new ("Overlay");
gtk_widget_set_halign (child, GTK_ALIGN_END);
gtk_widget_set_valign (child, GTK_ALIGN_END);
check1 = gtk_check_button_new_with_label ("Show main");
g_object_bind_property (main_child, "visible", check1, "active", G_BINDING_BIDIRECTIONAL);
check2 = gtk_check_button_new_with_label ("Show overlay");
g_object_bind_property (child, "visible", check2, "active", G_BINDING_BIDIRECTIONAL);
gtk_container_add (GTK_CONTAINER (main_child), label);
gtk_container_add (GTK_CONTAINER (overlay), main_child);
gtk_overlay_add_overlay (GTK_OVERLAY (overlay), child);
gtk_grid_attach (GTK_GRID (grid), overlay, 1, 0, 1, 3);
gtk_container_add (GTK_CONTAINER (win), grid);
gtk_grid_attach (GTK_GRID (grid), check1, 0, 0, 1, 1);
gtk_grid_attach (GTK_GRID (grid), check2, 0, 1, 1, 1);
child = gtk_label_new ("");
gtk_widget_set_vexpand (child, TRUE);
gtk_grid_attach (GTK_GRID (grid), child, 0, 2, 1, 1);
return win;
}
int
main (int argc, char *argv[])
{
GtkWidget *win1;
GtkWidget *win2;
GtkWidget *win3;
GtkWidget *win4;
GtkWidget *win5;
GtkWidget *win6;
GtkWidget *win7;
gtk_init (&argc, &argv);
if (g_getenv ("RTL"))
gtk_widget_set_default_direction (GTK_TEXT_DIR_RTL);
win1 = test_nonzerox ();
gtk_widget_show_all (win1);
win2 = test_relative ();
gtk_widget_show_all (win2);
win3 = test_fullwidth ();
gtk_widget_show_all (win3);
win4 = test_scrolling ();
gtk_widget_show_all (win4);
win5 = test_builder ();
gtk_widget_show_all (win5);
win6 = test_chase ();
gtk_widget_show_all (win6);
win7 = test_stacking ();
gtk_widget_show_all (win7);
gtk_main ();
return 0;
}