[libegg] Added wrapbox subdir to libegg, still need to fix Makefiles for GTK+ 3.0
- From: Tristan Van Berkom <tvb src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [libegg] Added wrapbox subdir to libegg, still need to fix Makefiles for GTK+ 3.0
- Date: Wed, 13 Oct 2010 13:09:45 +0000 (UTC)
commit 7cf20b2f5e6175550472b621b4b2d34a22e4f8c2
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date: Wed Oct 13 22:11:40 2010 +0900
Added wrapbox subdir to libegg, still need to fix Makefiles for GTK+ 3.0
libegg/wrapbox/Makefile | 13 +
libegg/wrapbox/eggwrapbox.c | 2633 ++++++++++++++++++++++++++++++++++++++++++
libegg/wrapbox/eggwrapbox.h | 157 +++
libegg/wrapbox/testwrapbox.c | 497 ++++++++
4 files changed, 3300 insertions(+), 0 deletions(-)
---
diff --git a/libegg/wrapbox/Makefile b/libegg/wrapbox/Makefile
new file mode 100644
index 0000000..edfa2a9
--- /dev/null
+++ b/libegg/wrapbox/Makefile
@@ -0,0 +1,13 @@
+
+
+all: testwrapbox
+
+testwrapbox:testwrapbox.c eggwrapbox.o
+ gcc -Wall -o $@ -g $^ `pkg-config --cflags --libs gtk+-3.0`
+
+eggwrapbox.o: eggwrapbox.c eggwrapbox.h
+ gcc -Wall -o $@ -g -c eggwrapbox.c `pkg-config --cflags gtk+-3.0`
+
+
+clean:
+ rm -f testwrapbox *.o *.so *~
diff --git a/libegg/wrapbox/eggwrapbox.c b/libegg/wrapbox/eggwrapbox.c
new file mode 100644
index 0000000..da3e4b2
--- /dev/null
+++ b/libegg/wrapbox/eggwrapbox.c
@@ -0,0 +1,2633 @@
+/* eggwrapbox.c
+ * Copyright (C) 2007-2010 Openismus GmbH
+ *
+ * Authors:
+ * Tristan Van Berkom <tristanvb openismus com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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.
+ */
+
+
+/**
+ * SECTION:eggwrapbox
+ * @Short_Description: A container that wraps its children
+ * @Title: EggWrapBox
+ *
+ * #EggWrapBox positions child widgets in sequence according to its
+ * orientation. For instance, with the horizontal orientation, the widgets
+ * will be arranged from left to right, starting a new row under the
+ * previous row when necessary. Reducing the width in this case will
+ * require more rows, so a larger height will be requested.
+ *
+ * Likewise, with the vertical orientation, the widgets will be arranged
+ * from top to bottom, starting a new column to the right when necessary.
+ * Reducing the height will require more columns, so a larger width will be
+ * requested.
+ *
+ * Unlike a GtkTable, the child widgets do not need to align in a grid.
+ */
+
+#include "eggwrapbox.h"
+
+#define P_(msgid) (msgid)
+#define GTK_PARAM_READWRITE (G_PARAM_READABLE | G_PARAM_WRITABLE)
+
+
+typedef struct _EggWrapBoxChild EggWrapBoxChild;
+
+enum {
+ PROP_0,
+ PROP_ORIENTATION,
+ PROP_ALLOCATION_MODE,
+ PROP_HORIZONTAL_SPREADING,
+ PROP_VERTICAL_SPREADING,
+ PROP_HORIZONTAL_SPACING,
+ PROP_VERTICAL_SPACING,
+ PROP_MINIMUM_LINE_CHILDREN,
+ PROP_NATURAL_LINE_CHILDREN
+};
+
+enum
+{
+ CHILD_PROP_0,
+ CHILD_PROP_PACKING
+};
+
+struct _EggWrapBoxPrivate
+{
+ GtkOrientation orientation;
+ EggWrapAllocationMode mode;
+ EggWrapBoxSpreading horizontal_spreading;
+ EggWrapBoxSpreading vertical_spreading;
+
+ guint16 vertical_spacing;
+ guint16 horizontal_spacing;
+
+ guint16 minimum_line_children;
+ guint16 natural_line_children;
+
+ GList *children;
+};
+
+struct _EggWrapBoxChild
+{
+ GtkWidget *widget;
+
+ EggWrapBoxPacking packing;
+};
+
+/* GObjectClass */
+static void egg_wrap_box_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void egg_wrap_box_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec);
+
+/* GtkWidgetClass */
+static void egg_wrap_box_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation);
+
+/* GtkContainerClass */
+static void egg_wrap_box_add (GtkContainer *container,
+ GtkWidget *widget);
+static void egg_wrap_box_remove (GtkContainer *container,
+ GtkWidget *widget);
+static void egg_wrap_box_forall (GtkContainer *container,
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data);
+static void egg_wrap_box_set_child_property (GtkContainer *container,
+ GtkWidget *child,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void egg_wrap_box_get_child_property (GtkContainer *container,
+ GtkWidget *child,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static GType egg_wrap_box_child_type (GtkContainer *container);
+
+
+/* GtkWidget */
+static GtkSizeRequestMode egg_wrap_box_get_request_mode (GtkWidget *widget);
+static void egg_wrap_box_get_preferred_width (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size);
+static void egg_wrap_box_get_preferred_height (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size);
+static void egg_wrap_box_get_preferred_height_for_width (GtkWidget *box,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height);
+static void egg_wrap_box_get_preferred_width_for_height (GtkWidget *box,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height);
+
+
+G_DEFINE_TYPE_WITH_CODE (EggWrapBox, egg_wrap_box, GTK_TYPE_CONTAINER,
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE, NULL))
+
+
+#define ORIENTATION_SPREADING(box) \
+ (((EggWrapBox *)(box))->priv->orientation == GTK_ORIENTATION_HORIZONTAL ? \
+ ((EggWrapBox *)(box))->priv->horizontal_spreading : \
+ ((EggWrapBox *)(box))->priv->vertical_spreading)
+
+#define OPPOSING_ORIENTATION_SPREADING(box) \
+ (((EggWrapBox *)(box))->priv->orientation == GTK_ORIENTATION_HORIZONTAL ? \
+ ((EggWrapBox *)(box))->priv->vertical_spreading : \
+ ((EggWrapBox *)(box))->priv->horizontal_spreading)
+
+
+
+static void
+egg_wrap_box_class_init (EggWrapBoxClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+ GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
+
+ gobject_class->get_property = egg_wrap_box_get_property;
+ gobject_class->set_property = egg_wrap_box_set_property;
+
+ widget_class->size_allocate = egg_wrap_box_size_allocate;
+ widget_class->get_request_mode = egg_wrap_box_get_request_mode;
+ widget_class->get_preferred_width = egg_wrap_box_get_preferred_width;
+ widget_class->get_preferred_height = egg_wrap_box_get_preferred_height;
+ widget_class->get_preferred_height_for_width = egg_wrap_box_get_preferred_height_for_width;
+ widget_class->get_preferred_width_for_height = egg_wrap_box_get_preferred_width_for_height;
+
+ container_class->add = egg_wrap_box_add;
+ container_class->remove = egg_wrap_box_remove;
+ container_class->forall = egg_wrap_box_forall;
+ container_class->child_type = egg_wrap_box_child_type;
+ container_class->set_child_property = egg_wrap_box_set_child_property;
+ container_class->get_child_property = egg_wrap_box_get_child_property;
+ gtk_container_class_handle_border_width (container_class);
+
+ /* GObjectClass properties */
+ g_object_class_override_property (gobject_class, PROP_ORIENTATION, "orientation");
+
+ /**
+ * EggWrapBox:allocation-mode:
+ *
+ * The #EggWrapAllocationMode to use.
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_ALLOCATION_MODE,
+ g_param_spec_uint ("allocation-mode",
+ P_("Allocation Mode"),
+ P_("The allocation mode to use"),
+ 0, EGG_WRAP_ALLOCATE_HOMOGENEOUS,
+ EGG_WRAP_ALLOCATE_FREE,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * EggWrapBox:horizontal-spreading:
+ *
+ * The #EggWrapBoxSpreading to used to define what is done with extra
+ * space in a given orientation.
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_HORIZONTAL_SPREADING,
+ g_param_spec_uint ("horizontal-spreading",
+ P_("Horizontal Spreading"),
+ P_("The spreading mode to use horizontally"),
+ 0, EGG_WRAP_BOX_SPREAD_EXPAND,
+ EGG_WRAP_BOX_SPREAD_START,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * EggWrapBox:vertical-spreading:
+ *
+ * The #EggWrapBoxSpreading to used to define what is done with extra
+ * space in a given orientation.
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_VERTICAL_SPREADING,
+ g_param_spec_uint ("vertical-spreading",
+ P_("Vertical Spreading"),
+ P_("The spreading mode to use vertically"),
+ 0, EGG_WRAP_BOX_SPREAD_EXPAND,
+ EGG_WRAP_BOX_SPREAD_START,
+ GTK_PARAM_READWRITE));
+
+
+ /**
+ * EggWrapBox:minimum-line-children:
+ *
+ * The minimum number of children to allocate consecutively in the given orientation.
+ *
+ * <note><para>Setting the minimum children per line ensures
+ * that a reasonably small height will be requested
+ * for the overall minimum width of the box.</para></note>
+ *
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_MINIMUM_LINE_CHILDREN,
+ g_param_spec_uint ("minimum-line-children",
+ P_("Minimum Line Children"),
+ P_("The minimum number of children to allocate "
+ "consecutively in the given orientation."),
+ 0,
+ 65535,
+ 0,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * EggWrapBox:natural-line-children:
+ *
+ * The maximum amount of children to request space for consecutively in the given orientation.
+ *
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_NATURAL_LINE_CHILDREN,
+ g_param_spec_uint ("natural-line-children",
+ P_("Natural Line Children"),
+ P_("The maximum amount of children to request space for "
+ "consecutively in the given orientation."),
+ 0,
+ 65535,
+ 0,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * EggWrapBox:vertical-spacing:
+ *
+ * The amount of vertical space between two children.
+ *
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_VERTICAL_SPACING,
+ g_param_spec_uint ("vertical-spacing",
+ P_("Vertical spacing"),
+ P_("The amount of vertical space between two children"),
+ 0,
+ 65535,
+ 0,
+ GTK_PARAM_READWRITE));
+
+ /**
+ * EggWrapBox:horizontal-spacing:
+ *
+ * The amount of horizontal space between two children.
+ *
+ */
+ g_object_class_install_property (gobject_class,
+ PROP_HORIZONTAL_SPACING,
+ g_param_spec_uint ("horizontal-spacing",
+ P_("Horizontal spacing"),
+ P_("The amount of horizontal space between two children"),
+ 0,
+ 65535,
+ 0,
+ GTK_PARAM_READWRITE));
+
+ /* GtkContainerClass child properties */
+
+ /**
+ * EggWrapBox:packing:
+ *
+ * The #EggWrapBoxPacking options to specify how to pack a child into the box.
+ */
+ gtk_container_class_install_child_property (container_class,
+ CHILD_PROP_PACKING,
+ g_param_spec_flags
+ ("packing",
+ P_("Packing"),
+ P_("The packing options to use for this child"),
+ GTK_TYPE_WRAP_BOX_PACKING, 0,
+ GTK_PARAM_READWRITE));
+
+ g_type_class_add_private (class, sizeof (EggWrapBoxPrivate));
+}
+
+static void
+egg_wrap_box_init (EggWrapBox *box)
+{
+ EggWrapBoxPrivate *priv;
+
+ box->priv = priv =
+ G_TYPE_INSTANCE_GET_PRIVATE (box, EGG_TYPE_WRAP_BOX, EggWrapBoxPrivate);
+
+ priv->orientation = GTK_ORIENTATION_HORIZONTAL;
+ priv->mode = EGG_WRAP_ALLOCATE_FREE;
+ priv->horizontal_spreading = EGG_WRAP_BOX_SPREAD_START;
+ priv->vertical_spreading = EGG_WRAP_BOX_SPREAD_START;
+ priv->horizontal_spacing = 0;
+ priv->vertical_spacing = 0;
+ priv->children = NULL;
+
+ gtk_widget_set_has_window (GTK_WIDGET (box), FALSE);
+}
+
+/*****************************************************
+ * GObectClass *
+ *****************************************************/
+static void
+egg_wrap_box_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (object);
+ EggWrapBoxPrivate *priv = box->priv;
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ g_value_set_boolean (value, priv->orientation);
+ break;
+ case PROP_ALLOCATION_MODE:
+ g_value_set_uint (value, priv->mode);
+ break;
+ case PROP_HORIZONTAL_SPREADING:
+ g_value_set_uint (value, priv->horizontal_spreading);
+ break;
+ case PROP_VERTICAL_SPREADING:
+ g_value_set_uint (value, priv->vertical_spreading);
+ break;
+ case PROP_HORIZONTAL_SPACING:
+ g_value_set_uint (value, priv->horizontal_spacing);
+ break;
+ case PROP_VERTICAL_SPACING:
+ g_value_set_uint (value, priv->vertical_spacing);
+ break;
+ case PROP_MINIMUM_LINE_CHILDREN:
+ g_value_set_uint (value, priv->minimum_line_children);
+ break;
+ case PROP_NATURAL_LINE_CHILDREN:
+ g_value_set_uint (value, priv->natural_line_children);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+egg_wrap_box_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (object);
+ EggWrapBoxPrivate *priv = box->priv;
+
+ switch (prop_id)
+ {
+ case PROP_ORIENTATION:
+ priv->orientation = g_value_get_enum (value);
+
+ /* Re-box the children in the new orientation */
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+ break;
+ case PROP_ALLOCATION_MODE:
+ egg_wrap_box_set_allocation_mode (box, g_value_get_uint (value));
+ break;
+ case PROP_HORIZONTAL_SPREADING:
+ egg_wrap_box_set_horizontal_spreading (box, g_value_get_uint (value));
+ break;
+ case PROP_VERTICAL_SPREADING:
+ egg_wrap_box_set_vertical_spreading (box, g_value_get_uint (value));
+ break;
+ case PROP_HORIZONTAL_SPACING:
+ egg_wrap_box_set_horizontal_spacing (box, g_value_get_uint (value));
+ break;
+ case PROP_VERTICAL_SPACING:
+ egg_wrap_box_set_vertical_spacing (box, g_value_get_uint (value));
+ break;
+ case PROP_MINIMUM_LINE_CHILDREN:
+ egg_wrap_box_set_minimum_line_children (box, g_value_get_uint (value));
+ break;
+ case PROP_NATURAL_LINE_CHILDREN:
+ egg_wrap_box_set_natural_line_children (box, g_value_get_uint (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+/*****************************************************
+ * GtkWidgetClass *
+ *****************************************************/
+
+static gint
+get_visible_children (EggWrapBox *box)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+ gint i = 0;
+
+ for (list = priv->children; list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ i++;
+ }
+
+ return i;
+}
+
+static gint
+get_visible_expand_children (EggWrapBox *box,
+ GtkOrientation orientation,
+ GList *cursor,
+ gint n_visible)
+{
+ GList *list;
+ gint i, expand_children = 0;
+
+ for (i = 0, list = cursor; (n_visible > 0 ? i < n_visible : TRUE) && list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if ((orientation == GTK_ORIENTATION_HORIZONTAL && (child->packing & EGG_WRAP_BOX_H_EXPAND) != 0) ||
+ (orientation == GTK_ORIENTATION_VERTICAL && (child->packing & EGG_WRAP_BOX_V_EXPAND) != 0))
+ expand_children++;
+
+ i++;
+ }
+
+ return expand_children;
+}
+
+/* Used in columned modes where all items share at least their
+ * equal widths or heights
+ */
+static void
+get_average_item_size (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint *min_size,
+ gint *nat_size)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+
+ for (list = priv->children; list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget, &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_height (child->widget, &child_min, &child_nat);
+
+ max_min_size = MAX (max_min_size, child_min);
+ max_nat_size = MAX (max_nat_size, child_nat);
+ }
+
+ if (min_size)
+ *min_size = max_min_size;
+
+ if (nat_size)
+ *nat_size = max_nat_size;
+}
+
+
+/* Gets the largest minimum/natural size for a given size
+ * (used to get the largest item heights for a fixed item width and the opposite) */
+static void
+get_largest_size_for_opposing_orientation (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint item_size,
+ gint *min_item_size,
+ gint *nat_item_size)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+
+ for (list = priv->children; list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_height_for_width (child->widget,
+ item_size,
+ &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_width_for_height (child->widget,
+ item_size,
+ &child_min, &child_nat);
+
+ max_min_size = MAX (max_min_size, child_min);
+ max_nat_size = MAX (max_nat_size, child_nat);
+ }
+
+ if (min_item_size)
+ *min_item_size = max_min_size;
+
+ if (nat_item_size)
+ *nat_item_size = max_nat_size;
+}
+
+
+/* Gets the largest minimum/natural size on a single line for a given size
+ * (used to get the largest line heights for a fixed item width and the opposite
+ * while itterating over a list of children, note the new index is returned) */
+static GList *
+get_largest_size_for_line_in_opposing_orientation (EggWrapBox *box,
+ GtkOrientation orientation,
+ GList *cursor,
+ gint line_length,
+ GtkRequestedSize *item_sizes,
+ gint extra_pixels,
+ gint *min_item_size,
+ gint *nat_item_size)
+{
+ GList *list;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+ gint i;
+
+ for (list = cursor, i = 0; list && i < line_length; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat, this_item_size;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ /* Distribute the extra pixels to the first children in the line
+ * (could be fancier and spread them out more evenly) */
+ this_item_size = item_sizes[i].minimum_size;
+ if (extra_pixels > 0 && ORIENTATION_SPREADING (box) == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ this_item_size++;
+ extra_pixels--;
+ }
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_height_for_width (child->widget,
+ this_item_size,
+ &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_width_for_height (child->widget,
+ this_item_size,
+ &child_min, &child_nat);
+
+ max_min_size = MAX (max_min_size, child_min);
+ max_nat_size = MAX (max_nat_size, child_nat);
+
+ i++;
+ }
+
+ if (min_item_size)
+ *min_item_size = max_min_size;
+
+ if (nat_item_size)
+ *nat_item_size = max_nat_size;
+
+ /* Return next item in the list */
+ return list;
+}
+
+
+/* Gets the largest minimum/natural size on a single line for a given allocated line size
+ * (used to get the largest line heights for a width in pixels and the opposite
+ * while itterating over a list of children, note the new index is returned) */
+static GList *
+get_largest_size_for_free_line_in_opposing_orientation (EggWrapBox *box,
+ GtkOrientation orientation,
+ GList *cursor,
+ gint min_items,
+ gint avail_size,
+ gint *min_item_size,
+ gint *nat_item_size,
+ gint *extra_pixels,
+ GArray **ret_array)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GtkRequestedSize *sizes;
+ GList *list;
+ GArray *array;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+ gint i, size = avail_size;
+ gint line_length, spacing;
+ gint expand_children = 0;
+ gint expand_per_child;
+ gint expand_remainder;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ spacing = priv->horizontal_spacing;
+ else
+ spacing = priv->vertical_spacing;
+
+ /* First determine the length of this line in items (how many items fit) */
+ for (i = 0, list = cursor; size > 0 && list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_size;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget, NULL, &child_size);
+ else
+ gtk_widget_get_preferred_height (child->widget, NULL, &child_size);
+
+ if (i > 0)
+ child_size += spacing;
+
+ if (size - child_size >= 0)
+ size -= child_size;
+ else
+ break;
+
+ i++;
+ }
+
+ line_length = MAX (min_items, i);
+ size = avail_size;
+
+ /* Collect the sizes of the items on this line */
+ array = g_array_new (0, TRUE, sizeof (GtkRequestedSize));
+
+ for (i = 0, list = cursor; i < line_length && list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ GtkRequestedSize requested;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ requested.data = child;
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget,
+ &requested.minimum_size,
+ &requested.natural_size);
+ else
+ gtk_widget_get_preferred_height (child->widget,
+ &requested.minimum_size,
+ &requested.natural_size);
+
+ if (i > 0)
+ size -= spacing;
+
+ size -= requested.minimum_size;
+
+ g_array_append_val (array, requested);
+
+ i++;
+ }
+
+ sizes = (GtkRequestedSize *)array->data;
+ size = gtk_distribute_natural_allocation (size, array->len, sizes);
+
+ if (extra_pixels)
+ *extra_pixels = size;
+
+ /* Cut out any expand space if we're not distributing any */
+ if (ORIENTATION_SPREADING (box) != EGG_WRAP_BOX_SPREAD_EXPAND)
+ size = 0;
+
+ /* Count how many children are going to expand... */
+ expand_children = get_visible_expand_children (box, orientation,
+ cursor, line_length);
+
+ /* If no child prefers to expand, they all get some expand space */
+ if (expand_children == 0)
+ {
+ expand_per_child = size / line_length;
+ expand_remainder = size % line_length;
+ }
+ else
+ {
+ expand_per_child = size / expand_children;
+ expand_remainder = size % expand_children;
+ }
+
+ /* Now add the remaining expand space and get the collective size of this line
+ * in the opposing orientation */
+ for (i = 0, list = cursor; i < line_length && list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ g_assert (child == sizes[i].data);
+
+ if ((orientation == GTK_ORIENTATION_HORIZONTAL && (child->packing & EGG_WRAP_BOX_H_EXPAND) != 0) ||
+ (orientation == GTK_ORIENTATION_VERTICAL && (child->packing & EGG_WRAP_BOX_V_EXPAND) != 0) ||
+ expand_children == 0)
+ {
+ sizes[i].minimum_size += expand_per_child;
+ if (expand_remainder)
+ {
+ sizes[i].minimum_size++;
+ expand_remainder--;
+ }
+ }
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_height_for_width (child->widget,
+ sizes[i].minimum_size,
+ &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_width_for_height (child->widget,
+ sizes[i].minimum_size,
+ &child_min, &child_nat);
+
+ max_min_size = MAX (max_min_size, child_min);
+ max_nat_size = MAX (max_nat_size, child_nat);
+
+ i++;
+ }
+
+ if (ret_array)
+ *ret_array = array;
+ else
+ g_array_free (array, TRUE);
+
+ if (min_item_size)
+ *min_item_size = max_min_size;
+
+ if (nat_item_size)
+ *nat_item_size = max_nat_size;
+
+ /* Return the next item */
+ return list;
+}
+
+static void
+allocate_child (EggWrapBox *box,
+ EggWrapBoxChild *child,
+ gint item_offset,
+ gint line_offset,
+ gint item_size,
+ gint line_size)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GtkAllocation widget_allocation;
+ GtkAllocation child_allocation;
+
+ gtk_widget_get_allocation (GTK_WIDGET (box), &widget_allocation);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ child_allocation.x = widget_allocation.x + item_offset;
+ child_allocation.y = widget_allocation.y + line_offset;
+ child_allocation.width = item_size;
+ child_allocation.height = line_size;
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ child_allocation.x = widget_allocation.x + line_offset;
+ child_allocation.y = widget_allocation.y + item_offset;
+ child_allocation.width = line_size;
+ child_allocation.height = item_size;
+ }
+
+ gtk_widget_size_allocate (child->widget, &child_allocation);
+}
+
+/* fit_aligned_item_requests() helper */
+static gint
+gather_aligned_item_requests (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint line_length,
+ gint item_spacing,
+ gint n_children,
+ GtkRequestedSize *item_sizes)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+ gint i;
+ gint extra_items, natural_line_size = 0;
+
+ extra_items = n_children % line_length;
+
+ for (list = priv->children, i = 0; list; list = list->next, i++)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat;
+ gint position;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget,
+ &child_min, &child_nat);
+ else
+ gtk_widget_get_preferred_height (child->widget,
+ &child_min, &child_nat);
+
+ /* Get the index and push it over for the last line when spreading to the end */
+ position = i % line_length;
+
+ if (ORIENTATION_SPREADING (box) == EGG_WRAP_BOX_SPREAD_END && i >= n_children - extra_items)
+ position += line_length - extra_items;
+
+ /* Round up the size of every column/row */
+ item_sizes[position].minimum_size = MAX (item_sizes[position].minimum_size, child_min);
+ item_sizes[position].natural_size = MAX (item_sizes[position].natural_size, child_nat);
+ }
+
+ for (i = 0; i < line_length; i++)
+ natural_line_size += item_sizes[i].natural_size;
+
+ natural_line_size += (line_length - 1) * item_spacing;
+
+ return natural_line_size;
+}
+
+static GtkRequestedSize *
+fit_aligned_item_requests (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint avail_size,
+ gint item_spacing,
+ gint *line_length, /* in-out */
+ gint n_children)
+{
+ GtkRequestedSize *sizes, *try_sizes;
+ gint try_line_size, try_length;
+
+ sizes = g_new0 (GtkRequestedSize, *line_length);
+
+ /* get the sizes for the initial guess */
+ try_line_size =
+ gather_aligned_item_requests (box, orientation, *line_length, item_spacing, n_children, sizes);
+
+ /* Try columnizing the whole thing and adding an item to the end of the line;
+ * try to fit as many columns into the available size as possible */
+ for (try_length = *line_length + 1; try_line_size < avail_size; try_length++)
+ {
+ try_sizes = g_new0 (GtkRequestedSize, try_length);
+ try_line_size = gather_aligned_item_requests (box, orientation, try_length, item_spacing,
+ n_children, try_sizes);
+
+ if (try_line_size <= avail_size)
+ {
+ *line_length = try_length;
+
+ g_free (sizes);
+ sizes = try_sizes;
+ }
+ else
+ {
+ /* oops, this one failed; stick to the last size that fit and then return */
+ g_free (try_sizes);
+ break;
+ }
+ }
+
+ return sizes;
+}
+
+
+typedef struct {
+ GArray *requested;
+ gint extra_pixels;
+} AllocatedLine;
+
+static void
+egg_wrap_box_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+ gint avail_size, avail_other_size, min_items, item_spacing, line_spacing;
+ EggWrapBoxSpreading item_spreading;
+ EggWrapBoxSpreading line_spreading;
+
+ gtk_widget_set_allocation (widget, allocation);
+
+ min_items = MAX (1, priv->minimum_line_children);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ avail_size = allocation->width;
+ avail_other_size = allocation->height;
+ item_spacing = priv->horizontal_spacing;
+ line_spacing = priv->vertical_spacing;
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ avail_size = allocation->height;
+ avail_other_size = allocation->width;
+ item_spacing = priv->vertical_spacing;
+ line_spacing = priv->horizontal_spacing;
+ }
+
+ item_spreading = ORIENTATION_SPREADING (box);
+ line_spreading = OPPOSING_ORIENTATION_SPREADING (box);
+
+
+ /*********************************************************
+ * Deal with ALIGNED/HOMOGENEOUS modes first, start with *
+ * initial guesses at item/line sizes *
+ *********************************************************/
+ if (priv->mode == EGG_WRAP_ALLOCATE_ALIGNED ||
+ priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ GtkRequestedSize *line_sizes = NULL;
+ GtkRequestedSize *item_sizes = NULL;
+ GList *list;
+ gint min_item_size, nat_item_size;
+ gint line_length;
+ gint item_size = 0;
+ gint line_size = 0, min_fixed_line_size = 0, nat_fixed_line_size = 0;
+ gint line_offset, item_offset, n_children, n_lines, line_count;
+ gint extra_pixels, extra_per_item = 0, extra_extra = 0;
+ gint extra_line_pixels, extra_per_line = 0, extra_line_extra = 0;
+ gint i, this_line_size;
+
+ get_average_item_size (box, priv->orientation, &min_item_size, &nat_item_size);
+
+ /* By default wrap at the natural item width */
+ line_length = avail_size / (nat_item_size + item_spacing);
+
+ /* After the above aproximation, check if we cant fit one more on the line */
+ if (line_length * item_spacing + (line_length + 1) * nat_item_size <= avail_size)
+ line_length++;
+
+ /* Its possible we were allocated just less than the natural width of the
+ * minimum item wrap length */
+ line_length = MAX (min_items, line_length);
+
+ /* Get how many lines we'll be needing to wrap */
+ n_children = get_visible_children (box);
+
+ /* Here we just use the largest height-for-width and use that for the height
+ * of all lines */
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ n_lines = n_children / line_length;
+ if ((n_children % line_length) > 0)
+ n_lines++;
+
+ n_lines = MAX (n_lines, 1);
+
+ /* Now we need the real item allocation size */
+ item_size = (avail_size - (line_length - 1) * item_spacing) / line_length;
+
+ /* Cut out the expand space if we're not distributing any */
+ if (item_spreading != EGG_WRAP_BOX_SPREAD_EXPAND)
+ item_size = MIN (item_size, nat_item_size);
+
+ get_largest_size_for_opposing_orientation (box, priv->orientation, item_size,
+ &min_fixed_line_size,
+ &nat_fixed_line_size);
+
+ /* resolve a fixed 'line_size' */
+ line_size = (avail_other_size - (n_lines - 1) * line_spacing) / n_lines;
+
+ if (line_spreading != EGG_WRAP_BOX_SPREAD_EXPAND)
+ line_size = MIN (line_size, nat_fixed_line_size);
+
+ /* Get the real extra pixels incase of EGG_WRAP_BOX_SPREAD_START lines */
+ extra_pixels = avail_size - (line_length - 1) * item_spacing - item_size * line_length;
+ extra_line_pixels = avail_other_size - (n_lines - 1) * line_spacing - line_size * n_lines;
+ }
+ else /* EGG_WRAP_ALLOCATE_ALIGNED */
+ {
+ GList *list;
+ gboolean first_line = TRUE;
+
+ /* Find the amount of columns that can fit aligned into the available space
+ * and collect their requests.
+ */
+ item_sizes = fit_aligned_item_requests (box, priv->orientation, avail_size,
+ item_spacing, &line_length, n_children);
+
+ /* Calculate the number of lines after determining the final line_length */
+ n_lines = n_children / line_length;
+ if ((n_children % line_length) > 0)
+ n_lines++;
+
+ n_lines = MAX (n_lines, 1);
+ line_sizes = g_new0 (GtkRequestedSize, n_lines);
+
+ /* Get the available remaining size */
+ avail_size -= (line_length - 1) * item_spacing;
+ for (i = 0; i < line_length; i++)
+ avail_size -= item_sizes[i].minimum_size;
+
+ /* Perform a natural allocation on the columnized items and get the remaining pixels */
+ extra_pixels = gtk_distribute_natural_allocation (avail_size, line_length, item_sizes);
+
+ /* Now that we have the size of each column of items find the size of each individual
+ * line based on the aligned item sizes.
+ */
+ for (i = 0, list = priv->children; list != NULL; i++)
+ {
+
+ list =
+ get_largest_size_for_line_in_opposing_orientation (box, priv->orientation,
+ list, line_length,
+ item_sizes, extra_pixels,
+ &line_sizes[i].minimum_size,
+ &line_sizes[i].natural_size);
+
+
+ /* Its possible a line is made of completely invisible children */
+ if (line_sizes[i].natural_size > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ avail_other_size -= line_spacing;
+
+ avail_other_size -= line_sizes[i].minimum_size;
+
+ line_sizes[i].data = GINT_TO_POINTER (i);
+ }
+ }
+
+ /* Distribute space among lines naturally */
+ extra_line_pixels = gtk_distribute_natural_allocation (avail_other_size, n_lines, line_sizes);
+ }
+
+ /*********************************************************
+ * Initial sizes of items/lines guessed at this point, *
+ * go on to distribute expand space if needed. *
+ *********************************************************/
+
+ /* FIXME: This portion needs to consider which columns
+ * and rows asked for expand space and distribute those
+ * accordingly for the case of ALIGNED allocation.
+ *
+ * If at least one child in a column/row asked for expand;
+ * we should make that row/column expand entirely.
+ */
+
+ /* Calculate expand space per item */
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ extra_per_item = extra_pixels / MAX (line_length -1, 1);
+ extra_extra = extra_pixels % MAX (line_length -1, 1);
+ }
+ else if (item_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ extra_per_item = extra_pixels / line_length;
+ extra_extra = extra_pixels % line_length;
+ }
+
+ /* Calculate expand space per line */
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ extra_per_line = extra_line_pixels / MAX (n_lines -1, 1);
+ extra_line_extra = extra_line_pixels % MAX (n_lines -1, 1);
+ }
+ else if (line_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ extra_per_line = extra_line_pixels / n_lines;
+ extra_line_extra = extra_line_pixels % n_lines;
+ }
+
+ /*********************************************************
+ * Prepare item/line initial offsets and jump into the *
+ * real allocation loop. *
+ *********************************************************/
+ line_offset = item_offset = 0;
+
+ /* prepend extra space to item_offset/line_offset for SPREAD_END */
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_END)
+ item_offset += extra_pixels;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_END)
+ line_offset += extra_line_pixels;
+
+ /* Get the allocation size for the first line */
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ this_line_size = line_size;
+ else
+ {
+ this_line_size = line_sizes[0].minimum_size;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ this_line_size += extra_per_line;
+
+ if (extra_line_extra > 0)
+ this_line_size++;
+ }
+ }
+
+ for (i = 0, line_count = 0, list = priv->children; list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint position;
+ gint this_item_size;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ /* Get item position */
+ position = i % line_length;
+
+ /* adjust the line_offset/count at the beginning of each new line */
+ if (i > 0 && position == 0)
+ {
+ /* Push the line_offset */
+ line_offset += this_line_size + line_spacing;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ line_offset += extra_per_line;
+
+ if (line_count < extra_line_extra)
+ line_offset++;
+ }
+
+ line_count++;
+
+ /* Get the new line size */
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ this_line_size = line_size;
+ else
+ {
+ this_line_size = line_sizes[line_count].minimum_size;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ this_line_size += extra_per_line;
+
+ if (line_count < extra_line_extra)
+ this_line_size++;
+ }
+ }
+
+ item_offset = 0;
+
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_END)
+ {
+ item_offset += extra_pixels;
+
+ /* If we're on the last line, prepend the space for
+ * any leading items */
+ if (line_count == n_lines -1)
+ {
+ gint extra_items = n_children % line_length;
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ item_offset += item_size * (line_length - extra_items);
+ item_offset += item_spacing * (line_length - extra_items);
+ }
+ else
+ {
+ gint j;
+
+ for (j = 0; j < (line_length - extra_items); j++)
+ {
+ item_offset += item_sizes[j].minimum_size;
+ item_offset += item_spacing;
+ }
+ }
+ }
+ }
+ }
+
+ /* Push the index along for the last line when spreading to the end */
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_END &&
+ line_count == n_lines -1)
+ {
+ gint extra_items = n_children % line_length;
+
+ position += line_length - extra_items;
+ }
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ this_item_size = item_size;
+ else /* aligned mode */
+ this_item_size = item_sizes[position].minimum_size;
+
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ this_item_size += extra_per_item;
+
+ if (position < extra_extra)
+ this_item_size++;
+ }
+
+ /* Do the actual allocation */
+ allocate_child (box, child, item_offset, line_offset, this_item_size, this_line_size);
+
+ item_offset += this_item_size;
+ item_offset += item_spacing;
+
+ /* deal with extra spacing here */
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ item_offset += extra_per_item;
+
+ if (position < extra_extra)
+ item_offset++;
+ }
+
+ i++;
+ }
+
+ g_free (item_sizes);
+ g_free (line_sizes);
+ }
+ else /* EGG_WRAP_ALLOCATE_FREE */
+ {
+ /* Here we just fit as many children as we can allocate their natural size to
+ * on each line and add the heights for each of them on each line */
+ GtkRequestedSize requested;
+ GtkRequestedSize *sizes = NULL;
+ GList *list = priv->children;
+ gboolean first_line = TRUE;
+ gint i, line_count = 0;
+ gint line_offset, item_offset;
+ gint extra_per_line = 0, extra_line_extra = 0;
+ gint extra_pixels;
+ GArray *array;
+
+ array = g_array_new (0, TRUE, sizeof (GtkRequestedSize));
+
+ while (list != NULL)
+ {
+ GArray *line_array;
+ AllocatedLine *line;
+
+ list =
+ get_largest_size_for_free_line_in_opposing_orientation (box, priv->orientation,
+ list, min_items, avail_size,
+ &requested.minimum_size,
+ &requested.natural_size,
+ &extra_pixels,
+ &line_array);
+
+ /* Its possible a line is made of completely invisible children */
+ if (requested.natural_size > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ avail_other_size -= line_spacing;
+
+ avail_other_size -= requested.minimum_size;
+
+ line = g_slice_new0 (AllocatedLine);
+ line->requested = line_array;
+ line->extra_pixels = extra_pixels;
+
+ requested.data = line;
+
+ g_array_append_val (array, requested);
+ }
+ }
+
+ /* Distribute space among lines naturally */
+ sizes = (GtkRequestedSize *)array->data;
+ avail_other_size = gtk_distribute_natural_allocation (avail_other_size, array->len, sizes);
+
+ /* Calculate expand space per line */
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ extra_per_line = avail_other_size / MAX (array->len -1, 1);
+ extra_line_extra = avail_other_size % MAX (array->len -1, 1);
+ }
+ else if (line_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ extra_per_line = avail_other_size / array->len;
+ extra_line_extra = avail_other_size % array->len;
+ }
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_END)
+ line_offset = avail_other_size;
+ else
+ line_offset = 0;
+
+ for (line_count = 0; line_count < array->len; line_count++)
+ {
+ AllocatedLine *line = (AllocatedLine *)sizes[line_count].data;
+ GArray *line_array = line->requested;
+ GtkRequestedSize *line_sizes = (GtkRequestedSize *)line_array->data;
+ gint line_size = sizes[line_count].minimum_size;
+ gint extra_per_item = 0;
+ gint extra_extra = 0;
+
+ /* Set line start offset */
+ item_offset = 0;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ line_size += extra_per_line;
+
+ if (line_count < extra_line_extra)
+ line_size++;
+ }
+
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_END)
+ item_offset += line->extra_pixels;
+ else if (item_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ extra_per_item = line->extra_pixels / MAX (line_array->len -1, 1);
+ extra_extra = line->extra_pixels % MAX (line_array->len -1, 1);
+ }
+
+ for (i = 0; i < line_array->len; i++)
+ {
+ EggWrapBoxChild *child = line_sizes[i].data;
+ gint item_size = line_sizes[i].minimum_size;
+
+ /* Do the actual allocation */
+ allocate_child (box, child, item_offset, line_offset, item_size, line_size);
+
+ /* Add extra space evenly between children */
+ if (item_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ item_offset += extra_per_item;
+ if (i < extra_extra)
+ item_offset++;
+ }
+
+ /* Move item cursor along for the next allocation */
+ item_offset += item_spacing;
+ item_offset += item_size;
+ }
+
+ /* New line, increment offset and reset item cursor */
+ line_offset += line_spacing;
+ line_offset += line_size;
+
+ if (line_spreading == EGG_WRAP_BOX_SPREAD_EVEN)
+ {
+ line_offset += extra_per_line;
+
+ if (line_count < extra_line_extra)
+ line_offset++;
+ }
+
+ /* Free the array for this line now its not needed anymore */
+ g_array_free (line_array, TRUE);
+ g_slice_free (AllocatedLine, line);
+ }
+
+ g_array_free (array, TRUE);
+ }
+}
+
+/*****************************************************
+ * GtkContainerClass *
+ *****************************************************/
+static void
+egg_wrap_box_add (GtkContainer *container,
+ GtkWidget *widget)
+{
+ egg_wrap_box_insert_child (EGG_WRAP_BOX (container), widget, -1, 0);
+}
+
+static gint
+find_child_in_list (EggWrapBoxChild *child_in_list,
+ GtkWidget *search)
+{
+ return (child_in_list->widget == search) ? 0 : -1;
+}
+
+static void
+egg_wrap_box_remove (GtkContainer *container,
+ GtkWidget *widget)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (container);
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+
+ list = g_list_find_custom (priv->children, widget,
+ (GCompareFunc)find_child_in_list);
+
+ if (list)
+ {
+ EggWrapBoxChild *child = list->data;
+ gboolean was_visible = gtk_widget_get_visible (widget);
+
+ gtk_widget_unparent (widget);
+
+ g_slice_free (EggWrapBoxChild, child);
+ priv->children = g_list_delete_link (priv->children, list);
+
+ if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
+ gtk_widget_queue_resize (GTK_WIDGET (container));
+ }
+}
+
+static void
+egg_wrap_box_forall (GtkContainer *container,
+ gboolean include_internals,
+ GtkCallback callback,
+ gpointer callback_data)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (container);
+ EggWrapBoxPrivate *priv = box->priv;
+ EggWrapBoxChild *child;
+ GList *list;
+
+ for (list = priv->children; list; list = list->next)
+ {
+ child = list->data;
+
+ (* callback) (child->widget, callback_data);
+ }
+}
+
+static GType
+egg_wrap_box_child_type (GtkContainer *container)
+{
+ return GTK_TYPE_WIDGET;
+}
+
+static void
+egg_wrap_box_set_child_property (GtkContainer *container,
+ GtkWidget *widget,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (container);
+ EggWrapBoxPrivate *priv = box->priv;
+ EggWrapBoxChild *child;
+ GList *list;
+
+ list = g_list_find_custom (priv->children, widget,
+ (GCompareFunc)find_child_in_list);
+ g_return_if_fail (list != NULL);
+
+ child = list->data;
+
+ switch (property_id)
+ {
+ case CHILD_PROP_PACKING:
+ child->packing = g_value_get_flags (value);
+ break;
+ default:
+ GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
+ break;
+ }
+
+ if (gtk_widget_get_visible (widget) &&
+ gtk_widget_get_visible (GTK_WIDGET (box)))
+ gtk_widget_queue_resize (widget);
+}
+
+static void
+egg_wrap_box_get_child_property (GtkContainer *container,
+ GtkWidget *widget,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (container);
+ EggWrapBoxPrivate *priv = box->priv;
+ EggWrapBoxChild *child;
+ GList *list;
+
+ list = g_list_find_custom (priv->children, widget,
+ (GCompareFunc)find_child_in_list);
+ g_return_if_fail (list != NULL);
+
+ child = list->data;
+
+ switch (property_id)
+ {
+ case CHILD_PROP_PACKING:
+ g_value_set_flags (value, child->packing);
+ break;
+ default:
+ GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
+ break;
+ }
+}
+
+/*****************************************************
+ * size requests *
+ *****************************************************/
+
+
+static GtkSizeRequestMode
+egg_wrap_box_get_request_mode (GtkWidget *widget)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+
+ return (priv->orientation == GTK_ORIENTATION_HORIZONTAL) ?
+ GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH : GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT;
+}
+
+/* Gets the largest minimum and natural length of
+ * 'line_length' consecutive items */
+static void
+get_largest_line_length (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint line_length,
+ gint *min_size,
+ gint *nat_size)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list, *l;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+ gint spacing;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ spacing = priv->horizontal_spacing;
+ else
+ spacing = priv->vertical_spacing;
+
+ /* Get the largest size of 'line_length' consecutive items in the list.
+ */
+ for (list = priv->children; list; list = list->next)
+ {
+ gint line_min = 0;
+ gint line_nat = 0;
+ gint i;
+
+ for (l = list, i = 0; l && i < line_length; l = l->next)
+ {
+ EggWrapBoxChild *child = l->data;
+ gint child_min, child_nat;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget,
+ &child_min, &child_nat);
+ else /* GTK_ORIENTATION_VERTICAL */
+ gtk_widget_get_preferred_height (child->widget,
+ &child_min, &child_nat);
+
+ line_min += child_min;
+ line_nat += child_nat;
+
+ i++;
+ }
+
+ max_min_size = MAX (max_min_size, line_min);
+ max_nat_size = MAX (max_nat_size, line_nat);
+ }
+
+ max_min_size += (line_length - 1) * spacing;
+ max_nat_size += (line_length - 1) * spacing;
+
+ if (min_size)
+ *min_size = max_min_size;
+
+ if (nat_size)
+ *nat_size = max_nat_size;
+}
+
+/* Gets the largest minimum and natural length of
+ * 'line_length' consecutive items when aligned into rows/columns */
+static void
+get_largest_aligned_line_length (EggWrapBox *box,
+ GtkOrientation orientation,
+ gint line_length,
+ gint *min_size,
+ gint *nat_size)
+{
+ EggWrapBoxPrivate *priv = box->priv;
+ GList *list;
+ gint max_min_size = 0;
+ gint max_nat_size = 0;
+ gint spacing, i;
+ GtkRequestedSize *aligned_item_sizes;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ spacing = priv->horizontal_spacing;
+ else
+ spacing = priv->vertical_spacing;
+
+ aligned_item_sizes = g_new0 (GtkRequestedSize, line_length);
+
+ /* Get the largest sizes of each index in the line.
+ */
+ for (list = priv->children, i = 0; list; list = list->next)
+ {
+ EggWrapBoxChild *child = list->data;
+ gint child_min, child_nat;
+
+ if (!gtk_widget_get_visible (child->widget))
+ continue;
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ gtk_widget_get_preferred_width (child->widget,
+ &child_min, &child_nat);
+ else /* GTK_ORIENTATION_VERTICAL */
+ gtk_widget_get_preferred_height (child->widget,
+ &child_min, &child_nat);
+
+ aligned_item_sizes[i % line_length].minimum_size =
+ MAX (aligned_item_sizes[i % line_length].minimum_size, child_min);
+
+ aligned_item_sizes[i % line_length].natural_size =
+ MAX (aligned_item_sizes[i % line_length].natural_size, child_nat);
+
+ i++;
+ }
+
+ /* Add up the largest indexes */
+ for (i = 0; i < line_length; i++)
+ {
+ max_min_size += aligned_item_sizes[i].minimum_size;
+ max_nat_size += aligned_item_sizes[i].natural_size;
+ }
+
+ g_free (aligned_item_sizes);
+
+ max_min_size += (line_length - 1) * spacing;
+ max_nat_size += (line_length - 1) * spacing;
+
+ if (min_size)
+ *min_size = max_min_size;
+
+ if (nat_size)
+ *nat_size = max_nat_size;
+}
+
+
+static void
+egg_wrap_box_get_preferred_width (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+ gint min_item_width, nat_item_width;
+ gint min_items, nat_items;
+ gint min_width, nat_width;
+
+ min_items = MAX (1, priv->minimum_line_children);
+ nat_items = MAX (min_items, priv->natural_line_children);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ min_width = nat_width = 0;
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_FREE ||
+ priv->mode == EGG_WRAP_ALLOCATE_ALIGNED)
+ {
+ /* In FREE and ALIGNED modes; horizontally oriented boxes
+ * need enough width for the widest row */
+ if (min_items == 1)
+ {
+ get_average_item_size (box, GTK_ORIENTATION_HORIZONTAL,
+ &min_item_width, &nat_item_width);
+
+ min_width += min_item_width;
+ nat_width += nat_item_width;
+ }
+ else if (priv->mode == EGG_WRAP_ALLOCATE_FREE)
+ {
+ gint min_line_length, nat_line_length;
+
+ get_largest_line_length (box, GTK_ORIENTATION_HORIZONTAL, min_items,
+ &min_line_length, &nat_line_length);
+
+ if (nat_items > min_items)
+ get_largest_line_length (box, GTK_ORIENTATION_HORIZONTAL, nat_items,
+ NULL, &nat_line_length);
+
+ min_width += min_line_length;
+ nat_width += nat_line_length;
+ }
+ else /* EGG_WRAP_MODE_ALIGNED */
+ {
+ gint min_line_length, nat_line_length;
+
+ get_largest_aligned_line_length (box, GTK_ORIENTATION_HORIZONTAL, min_items,
+ &min_line_length, &nat_line_length);
+
+ if (nat_items > min_items)
+ get_largest_aligned_line_length (box, GTK_ORIENTATION_HORIZONTAL, nat_items,
+ NULL, &nat_line_length);
+
+ min_width += min_line_length;
+ nat_width += nat_line_length;
+ }
+ }
+ else /* In HOMOGENEOUS mode; horizontally oriented boxs
+ * give the same width to all children */
+ {
+ get_average_item_size (box, GTK_ORIENTATION_HORIZONTAL,
+ &min_item_width, &nat_item_width);
+
+ min_width += min_item_width * min_items;
+ min_width += (min_items -1) * priv->horizontal_spacing;
+
+ nat_width += nat_item_width * nat_items;
+ nat_width += (nat_items -1) * priv->horizontal_spacing;
+ }
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ /* Return the width for the minimum height */
+ gint min_height;
+
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, &min_height, NULL);
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_width_for_height (widget, min_height,
+ &min_width, &nat_width);
+
+ }
+
+ if (minimum_size)
+ *minimum_size = min_width;
+
+ if (natural_size)
+ *natural_size = nat_width;
+}
+
+static void
+egg_wrap_box_get_preferred_height (GtkWidget *widget,
+ gint *minimum_size,
+ gint *natural_size)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+ gint min_item_height, nat_item_height;
+ gint min_items, nat_items;
+ gint min_height, nat_height;
+
+ min_items = MAX (1, priv->minimum_line_children);
+ nat_items = MAX (min_items, priv->natural_line_children);
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ /* Return the height for the minimum width */
+ gint min_width;
+
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, NULL);
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_height_for_width (widget, min_width,
+ &min_height, &nat_height);
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ min_height = nat_height = 0;
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_FREE ||
+ priv->mode == EGG_WRAP_ALLOCATE_ALIGNED)
+ {
+ /* In FREE and ALIGNED modes; vertically oriented boxes
+ * need enough height for the tallest column */
+ if (min_items == 1)
+ {
+ get_average_item_size (box, GTK_ORIENTATION_VERTICAL,
+ &min_item_height, &nat_item_height);
+
+ min_height += min_item_height;
+ nat_height += nat_item_height;
+ }
+ else if (priv->mode == EGG_WRAP_ALLOCATE_FREE)
+ {
+ gint min_line_length, nat_line_length;
+
+ get_largest_line_length (box, GTK_ORIENTATION_VERTICAL, min_items,
+ &min_line_length, &nat_line_length);
+
+ if (nat_items > min_items)
+ get_largest_line_length (box, GTK_ORIENTATION_VERTICAL, nat_items,
+ NULL, &nat_line_length);
+
+ min_height += min_line_length;
+ nat_height += nat_line_length;
+ }
+ else /* EGG_WRAP_ALLOCATE_ALIGNED */
+ {
+ gint min_line_length, nat_line_length;
+
+ get_largest_aligned_line_length (box, GTK_ORIENTATION_VERTICAL, min_items,
+ &min_line_length, &nat_line_length);
+
+ if (nat_items > min_items)
+ get_largest_aligned_line_length (box, GTK_ORIENTATION_VERTICAL, nat_items,
+ NULL, &nat_line_length);
+
+ min_height += min_line_length;
+ nat_height += nat_line_length;
+ }
+
+ }
+ else /* In HOMOGENEOUS mode; vertically oriented boxs
+ * give the same height to all children */
+ {
+ get_average_item_size (box, GTK_ORIENTATION_VERTICAL,
+ &min_item_height, &nat_item_height);
+
+ min_height += min_item_height * min_items;
+ min_height += (min_items -1) * priv->vertical_spacing;
+
+ nat_height += nat_item_height * nat_items;
+ nat_height += (nat_items -1) * priv->vertical_spacing;
+ }
+ }
+
+ if (minimum_size)
+ *minimum_size = min_height;
+
+ if (natural_size)
+ *natural_size = nat_height;
+}
+
+static void
+egg_wrap_box_get_preferred_height_for_width (GtkWidget *widget,
+ gint width,
+ gint *minimum_height,
+ gint *natural_height)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+ gint min_item_width, nat_item_width;
+ gint min_items;
+ gint min_height, nat_height;
+ gint avail_size, n_children;
+
+ min_items = MAX (1, priv->minimum_line_children);
+
+ min_height = 0;
+ nat_height = 0;
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ gint min_width;
+
+ n_children = get_visible_children (box);
+
+ /* Make sure its no smaller than the minimum */
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, NULL);
+
+ avail_size = MAX (width, min_width);
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_ALIGNED ||
+ priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ gint line_length;
+ gint item_size, extra_pixels;
+
+ get_average_item_size (box, GTK_ORIENTATION_HORIZONTAL, &min_item_width, &nat_item_width);
+
+ /* By default wrap at the natural item width */
+ line_length = avail_size / (nat_item_width + priv->horizontal_spacing);
+
+ /* After the above aproximation, check if we cant fit one more on the line */
+ if (line_length * priv->horizontal_spacing + (line_length + 1) * nat_item_width <= avail_size)
+ line_length++;
+
+ /* Its possible we were allocated just less than the natural width of the
+ * minimum item wrap length */
+ line_length = MAX (min_items, line_length);
+
+ /* Now we need the real item allocation size */
+ item_size = (avail_size - (line_length - 1) * priv->horizontal_spacing) / line_length;
+
+ /* Cut out the expand space if we're not distributing any */
+ if (priv->horizontal_spreading != EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ item_size = MIN (item_size, nat_item_width);
+ extra_pixels = 0;
+ }
+ else
+ /* Collect the extra pixels for expand children */
+ extra_pixels = (avail_size - (line_length - 1) * priv->horizontal_spacing) % line_length;
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ gint min_item_height, nat_item_height;
+ gint lines;
+
+ /* Here we just use the largest height-for-width and
+ * add up the size accordingly */
+ get_largest_size_for_opposing_orientation (box, GTK_ORIENTATION_HORIZONTAL, item_size,
+ &min_item_height, &nat_item_height);
+
+ /* Round up how many lines we need to allocate for */
+ lines = n_children / line_length;
+ if ((n_children % line_length) > 0)
+ lines++;
+
+ min_height = min_item_height * lines;
+ nat_height = nat_item_height * lines;
+
+ min_height += (lines - 1) * priv->vertical_spacing;
+ nat_height += (lines - 1) * priv->vertical_spacing;
+ }
+ else /* EGG_WRAP_ALLOCATE_ALIGNED */
+ {
+ GList *list = priv->children;
+ gint min_line_height, nat_line_height, i;
+ gboolean first_line = TRUE;
+ GtkRequestedSize *item_sizes;
+
+ /* First get the size each set of items take to span the line
+ * when aligning the items above and below after wrapping.
+ */
+ item_sizes = fit_aligned_item_requests (box, priv->orientation, avail_size,
+ priv->horizontal_spacing, &line_length, n_children);
+
+
+ /* Get the available remaining size */
+ avail_size -= (line_length - 1) * priv->horizontal_spacing;
+ for (i = 0; i < line_length; i++)
+ avail_size -= item_sizes[i].minimum_size;
+
+ extra_pixels = gtk_distribute_natural_allocation (avail_size, line_length, item_sizes);
+
+ while (list != NULL)
+ {
+ list =
+ get_largest_size_for_line_in_opposing_orientation (box, GTK_ORIENTATION_HORIZONTAL,
+ list, line_length,
+ item_sizes, extra_pixels,
+ &min_line_height, &nat_line_height);
+
+ /* Its possible the line only had invisible widgets */
+ if (nat_line_height > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ {
+ min_height += priv->vertical_spacing;
+ nat_height += priv->vertical_spacing;
+ }
+
+ min_height += min_line_height;
+ nat_height += nat_line_height;
+ }
+ }
+
+ g_free (item_sizes);
+ }
+ }
+ else /* EGG_WRAP_ALLOCATE_FREE */
+ {
+ /* Here we just fit as many children as we can allocate their natural size to
+ * on each line and add the heights for each of them on each line */
+ GList *list = priv->children;
+ gint min_line_height = 0, nat_line_height = 0;
+ gboolean first_line = TRUE;
+
+ while (list != NULL)
+ {
+ list =
+ get_largest_size_for_free_line_in_opposing_orientation (box, GTK_ORIENTATION_HORIZONTAL,
+ list, min_items, avail_size,
+ &min_line_height, &nat_line_height,
+ NULL, NULL);
+
+ /* Its possible the last line only had invisible widgets */
+ if (nat_line_height > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ {
+ min_height += priv->vertical_spacing;
+ nat_height += priv->vertical_spacing;
+ }
+
+ min_height += min_line_height;
+ nat_height += nat_line_height;
+ }
+ }
+ }
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ /* Return the minimum height */
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, &min_height, &nat_height);
+ }
+
+ if (minimum_height)
+ *minimum_height = min_height;
+
+ if (natural_height)
+ *natural_height = nat_height;
+}
+
+static void
+egg_wrap_box_get_preferred_width_for_height (GtkWidget *widget,
+ gint height,
+ gint *minimum_width,
+ gint *natural_width)
+{
+ EggWrapBox *box = EGG_WRAP_BOX (widget);
+ EggWrapBoxPrivate *priv = box->priv;
+ gint min_item_height, nat_item_height;
+ gint min_items;
+ gint min_width, nat_width;
+ gint avail_size, n_children;
+
+ min_items = MAX (1, priv->minimum_line_children);
+
+ min_width = 0;
+ nat_width = 0;
+
+ if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
+ {
+ /* Return the minimum width */
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, &min_width, &nat_width);
+ }
+ else /* GTK_ORIENTATION_VERTICAL */
+ {
+ gint min_height;
+
+ n_children = get_visible_children (box);
+
+ /* Make sure its no smaller than the minimum */
+ GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, &min_height, NULL);
+
+ avail_size = MAX (height, min_height);
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_ALIGNED ||
+ priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ gint line_length;
+ gint item_size, extra_pixels;
+
+ get_average_item_size (box, GTK_ORIENTATION_VERTICAL, &min_item_height, &nat_item_height);
+
+ /* By default wrap at the natural item width */
+ line_length = avail_size / (nat_item_height + priv->vertical_spacing);
+
+ /* After the above aproximation, check if we cant fit one more on the line */
+ if (line_length * priv->vertical_spacing + (line_length + 1) * nat_item_height <= avail_size)
+ line_length++;
+
+ /* Its possible we were allocated just less than the natural width of the
+ * minimum item wrap length */
+ line_length = MAX (min_items, line_length);
+
+ /* Now we need the real item allocation size */
+ item_size = (avail_size - (line_length - 1) * priv->vertical_spacing) / line_length;
+
+ /* Cut out the expand space if we're not distributing any */
+ if (priv->vertical_spreading != EGG_WRAP_BOX_SPREAD_EXPAND)
+ {
+ item_size = MIN (item_size, nat_item_height);
+ extra_pixels = 0;
+ }
+ else
+ /* Collect the extra pixels for expand children */
+ extra_pixels = (avail_size - (line_length - 1) * priv->vertical_spacing) % line_length;
+
+ if (priv->mode == EGG_WRAP_ALLOCATE_HOMOGENEOUS)
+ {
+ gint min_item_width, nat_item_width;
+ gint lines;
+
+ /* Here we just use the largest height-for-width and
+ * add up the size accordingly */
+ get_largest_size_for_opposing_orientation (box, GTK_ORIENTATION_VERTICAL, item_size,
+ &min_item_width, &nat_item_width);
+
+ /* Round up how many lines we need to allocate for */
+ n_children = get_visible_children (box);
+ lines = n_children / line_length;
+ if ((n_children % line_length) > 0)
+ lines++;
+
+ min_width = min_item_width * lines;
+ nat_width = nat_item_width * lines;
+
+ min_width += (lines - 1) * priv->horizontal_spacing;
+ nat_width += (lines - 1) * priv->horizontal_spacing;
+ }
+ else /* EGG_WRAP_ALLOCATE_ALIGNED */
+ {
+ GList *list = priv->children;
+ gint min_line_width, nat_line_width, i;
+ gboolean first_line = TRUE;
+ GtkRequestedSize *item_sizes;
+
+ /* First get the size each set of items take to span the line
+ * when aligning the items above and below after wrapping.
+ */
+ item_sizes = fit_aligned_item_requests (box, priv->orientation, avail_size,
+ priv->vertical_spacing, &line_length, n_children);
+
+ /* Get the available remaining size */
+ avail_size -= (line_length - 1) * priv->horizontal_spacing;
+ for (i = 0; i < line_length; i++)
+ avail_size -= item_sizes[i].minimum_size;
+
+ extra_pixels = gtk_distribute_natural_allocation (avail_size, line_length, item_sizes);
+
+ while (list != NULL)
+ {
+ list =
+ get_largest_size_for_line_in_opposing_orientation (box, GTK_ORIENTATION_VERTICAL,
+ list, line_length,
+ item_sizes, extra_pixels,
+ &min_line_width, &nat_line_width);
+
+ /* Its possible the last line only had invisible widgets */
+ if (nat_line_width > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ {
+ min_width += priv->horizontal_spacing;
+ nat_width += priv->horizontal_spacing;
+ }
+
+ min_width += min_line_width;
+ nat_width += nat_line_width;
+ }
+ }
+ g_free (item_sizes);
+ }
+ }
+ else /* EGG_WRAP_ALLOCATE_FREE */
+ {
+ /* Here we just fit as many children as we can allocate their natural size to
+ * on each line and add the heights for each of them on each line */
+ GList *list = priv->children;
+ gint min_line_width = 0, nat_line_width = 0;
+ gboolean first_line = TRUE;
+
+ while (list != NULL)
+ {
+ list =
+ get_largest_size_for_free_line_in_opposing_orientation (box, GTK_ORIENTATION_VERTICAL,
+ list, min_items, avail_size,
+ &min_line_width, &nat_line_width,
+ NULL, NULL);
+
+ /* Its possible the last line only had invisible widgets */
+ if (nat_line_width > 0)
+ {
+ if (first_line)
+ first_line = FALSE;
+ else
+ {
+ min_width += priv->horizontal_spacing;
+ nat_width += priv->horizontal_spacing;
+ }
+
+ min_width += min_line_width;
+ nat_width += nat_line_width;
+ }
+ }
+ }
+ }
+
+ if (minimum_width)
+ *minimum_width = min_width;
+
+ if (natural_width)
+ *natural_width = nat_width;
+}
+
+/*****************************************************
+ * API *
+ *****************************************************/
+
+/**
+ * egg_wrap_box_new:
+ * @mode: The #EggWrapAllocationMode to use
+ * @horizontal_spreading: The horizontal #EggWrapBoxSpreading policy to use
+ * @vertical_spreading: The vertical #EggWrapBoxSpreading policy to use
+ * @horizontal_spacing: The horizontal spacing to add between children
+ * @vertical_spacing: The vertical spacing to add between children
+ *
+ * Creates an #EggWrapBox.
+ *
+ * Returns: A new #EggWrapBox container
+ */
+GtkWidget *
+egg_wrap_box_new (EggWrapAllocationMode mode,
+ EggWrapBoxSpreading horizontal_spreading,
+ EggWrapBoxSpreading vertical_spreading,
+ guint horizontal_spacing,
+ guint vertical_spacing)
+{
+ return (GtkWidget *)g_object_new (EGG_TYPE_WRAP_BOX,
+ "allocation-mode", mode,
+ "horizontal-spreading", horizontal_spreading,
+ "vertical-spreading", vertical_spreading,
+ "vertical-spacing", vertical_spacing,
+ "horizontal-spacing", horizontal_spacing,
+ NULL);
+}
+
+/**
+ * egg_wrap_box_set_allocation_mode:
+ * @box: An #EggWrapBox
+ * @mode: The #EggWrapAllocationMode to use.
+ *
+ * Sets the allocation mode for @box's children.
+ */
+void
+egg_wrap_box_set_allocation_mode (EggWrapBox *box,
+ EggWrapAllocationMode mode)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->mode != mode)
+ {
+ priv->mode = mode;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "allocation-mode");
+ }
+}
+
+/**
+ * egg_wrap_box_get_allocation_mode:
+ * @box: An #EggWrapBox
+ *
+ * Gets the allocation mode.
+ *
+ * Returns: The #EggWrapAllocationMode for @box.
+ */
+EggWrapAllocationMode
+egg_wrap_box_get_allocation_mode (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->mode;
+}
+
+
+/**
+ * egg_wrap_box_set_horizontal_spreading:
+ * @box: An #EggWrapBox
+ * @spreading: The #EggWrapBoxSpreading to use.
+ *
+ * Sets the horizontal spreading mode for @box's children.
+ */
+void
+egg_wrap_box_set_horizontal_spreading (EggWrapBox *box,
+ EggWrapBoxSpreading spreading)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->horizontal_spreading != spreading)
+ {
+ priv->horizontal_spreading = spreading;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "horizontal-spreading");
+ }
+}
+
+/**
+ * egg_wrap_box_get_horizontal_spreading:
+ * @box: An #EggWrapBox
+ *
+ * Gets the horizontal spreading mode.
+ *
+ * Returns: The horizontal #EggWrapBoxSpreading for @box.
+ */
+EggWrapBoxSpreading
+egg_wrap_box_get_horizontal_spreading (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->horizontal_spreading;
+}
+
+
+/**
+ * egg_wrap_box_set_vertical_spreading:
+ * @box: An #EggWrapBox
+ * @spreading: The #EggWrapBoxSpreading to use.
+ *
+ * Sets the vertical spreading mode for @box's children.
+ */
+void
+egg_wrap_box_set_vertical_spreading (EggWrapBox *box,
+ EggWrapBoxSpreading spreading)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->vertical_spreading != spreading)
+ {
+ priv->vertical_spreading = spreading;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "vertical-spreading");
+ }
+}
+
+/**
+ * egg_wrap_box_get_vertical_spreading:
+ * @box: An #EggWrapBox
+ *
+ * Gets the vertical spreading mode.
+ *
+ * Returns: The vertical #EggWrapBoxSpreading for @box.
+ */
+EggWrapBoxSpreading
+egg_wrap_box_get_vertical_spreading (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->vertical_spreading;
+}
+
+
+/**
+ * egg_wrap_box_set_vertical_spacing:
+ * @box: An #EggWrapBox
+ * @spacing: The spacing to use.
+ *
+ * Sets the vertical space to add between children.
+ */
+void
+egg_wrap_box_set_vertical_spacing (EggWrapBox *box,
+ guint spacing)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->vertical_spacing != spacing)
+ {
+ priv->vertical_spacing = spacing;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "vertical-spacing");
+ }
+}
+
+/**
+ * egg_wrap_box_get_vertical_spacing:
+ * @box: An #EggWrapBox
+ *
+ * Gets the vertical spacing.
+ *
+ * Returns: The vertical spacing.
+ */
+guint
+egg_wrap_box_get_vertical_spacing (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->vertical_spacing;
+}
+
+/**
+ * egg_wrap_box_set_horizontal_spacing:
+ * @box: An #EggWrapBox
+ * @spacing: The spacing to use.
+ *
+ * Sets the horizontal space to add between children.
+ */
+void
+egg_wrap_box_set_horizontal_spacing (EggWrapBox *box,
+ guint spacing)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->horizontal_spacing != spacing)
+ {
+ priv->horizontal_spacing = spacing;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "horizontal-spacing");
+ }
+}
+
+/**
+ * egg_wrap_box_get_horizontal_spacing:
+ * @box: An #EggWrapBox
+ *
+ * Gets the horizontal spacing.
+ *
+ * Returns: The horizontal spacing.
+ */
+guint
+egg_wrap_box_get_horizontal_spacing (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->horizontal_spacing;
+}
+
+/**
+ * egg_wrap_box_set_minimum_line_children:
+ * @box: An #EggWrapBox
+ * @n_children: The minimum amount of children per line.
+ *
+ * Sets the minimum amount of children to line up
+ * in @box's orientation before wrapping.
+ */
+void
+egg_wrap_box_set_minimum_line_children (EggWrapBox *box,
+ guint n_children)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->minimum_line_children != n_children)
+ {
+ priv->minimum_line_children = n_children;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "minimum-line-children");
+ }
+}
+
+/**
+ * egg_wrap_box_get_minimum_line_children:
+ * @box: An #EggWrapBox
+ *
+ * Gets the minimum amount of children per line.
+ *
+ * Returns: The minimum amount of children per line.
+ */
+guint
+egg_wrap_box_get_minimum_line_children (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->minimum_line_children;
+}
+
+/**
+ * egg_wrap_box_set_natural_line_children:
+ * @box: An #EggWrapBox
+ * @n_children: The natural amount of children per line.
+ *
+ * Sets the natural length of items to request and
+ * allocate space for in @box's orientation.
+ *
+ * Setting the natural amount of children per line
+ * limits the overall natural size request to be no more
+ * than @n_children items long in the given orientation.
+ */
+void
+egg_wrap_box_set_natural_line_children (EggWrapBox *box,
+ guint n_children)
+{
+ EggWrapBoxPrivate *priv;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+
+ priv = box->priv;
+
+ if (priv->natural_line_children != n_children)
+ {
+ priv->natural_line_children = n_children;
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+
+ g_object_notify (G_OBJECT (box), "natural-line-children");
+ }
+}
+
+/**
+ * egg_wrap_box_get_natural_line_children:
+ * @box: An #EggWrapBox
+ *
+ * Gets the natural amount of children per line.
+ *
+ * Returns: The natural amount of children per line.
+ */
+guint
+egg_wrap_box_get_natural_line_children (EggWrapBox *box)
+{
+ g_return_val_if_fail (EGG_IS_WRAP_BOX (box), FALSE);
+
+ return box->priv->natural_line_children;
+}
+
+
+/**
+ * egg_wrap_box_insert_child:
+ * @box: And #EggWrapBox
+ * @widget: the child #GtkWidget to add
+ * @index: the position in the child list to insert, specify -1 to append to the list.
+ * @packing: The #EggWrapBoxPacking options to use.
+ *
+ * Adds a child to an #EggWrapBox with its packing options set
+ *
+ */
+void
+egg_wrap_box_insert_child (EggWrapBox *box,
+ GtkWidget *widget,
+ gint index,
+ EggWrapBoxPacking packing)
+{
+ EggWrapBoxPrivate *priv;
+ EggWrapBoxChild *child;
+ GList *list;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+
+ priv = box->priv;
+
+ list = g_list_find_custom (priv->children, widget,
+ (GCompareFunc)find_child_in_list);
+ g_return_if_fail (list == NULL);
+
+ child = g_slice_new0 (EggWrapBoxChild);
+ child->widget = widget;
+ child->packing = packing;
+
+ priv->children = g_list_insert (priv->children, child, index);
+
+ gtk_widget_set_parent (widget, GTK_WIDGET (box));
+}
+
+/**
+ * egg_wrap_box_reorder_child:
+ * @box: An #EggWrapBox
+ * @widget: The child to reorder
+ * @index: The new child position
+ *
+ * Reorders the child @widget in @box's list of children.
+ */
+void
+egg_wrap_box_reorder_child (EggWrapBox *box,
+ GtkWidget *widget,
+ guint index)
+{
+ EggWrapBoxPrivate *priv;
+ EggWrapBoxChild *child;
+ GList *list;
+
+ g_return_if_fail (EGG_IS_WRAP_BOX (box));
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+
+ priv = box->priv;
+
+ list = g_list_find_custom (priv->children, widget,
+ (GCompareFunc)find_child_in_list);
+ g_return_if_fail (list != NULL);
+
+ if (g_list_position (priv->children, list) != index)
+ {
+ child = list->data;
+ priv->children = g_list_delete_link (priv->children, list);
+ priv->children = g_list_insert (priv->children, child, index);
+
+ gtk_widget_queue_resize (GTK_WIDGET (box));
+ }
+}
diff --git a/libegg/wrapbox/eggwrapbox.h b/libegg/wrapbox/eggwrapbox.h
new file mode 100644
index 0000000..e4625a0
--- /dev/null
+++ b/libegg/wrapbox/eggwrapbox.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2010 Openismus GmbH
+ *
+ * Authors:
+ * Tristan Van Berkom <tristanvb openismus com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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.
+ */
+
+#ifndef __EGG_WRAP_BOX_H__
+#define __EGG_WRAP_BOX_H__
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+
+#define EGG_TYPE_WRAP_BOX (egg_wrap_box_get_type ())
+#define EGG_WRAP_BOX(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EGG_TYPE_WRAP_BOX, EggWrapBox))
+#define EGG_WRAP_BOX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), EGG_TYPE_WRAP_BOX, EggWrapBoxClass))
+#define EGG_IS_WRAP_BOX(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EGG_TYPE_WRAP_BOX))
+#define EGG_IS_WRAP_BOX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EGG_TYPE_WRAP_BOX))
+#define EGG_WRAP_BOX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), EGG_TYPE_WRAP_BOX, EggWrapBoxClass))
+
+typedef struct _EggWrapBox EggWrapBox;
+typedef struct _EggWrapBoxPrivate EggWrapBoxPrivate;
+typedef struct _EggWrapBoxClass EggWrapBoxClass;
+
+
+/**
+ * EggWrapAllocationMode:
+ * @EGG_WRAP_ALLOCATE_FREE: Items wrap freely in the box's orientation
+ * @EGG_WRAP_ALLOCATE_ALIGNED: Items are aligned into rows and columns
+ * @EGG_WRAP_ALLOCATE_HOMOGENEOUS: Items are all allocated the same size
+ *
+ * Describes how an #EggWrapBox positions its children.
+ */
+typedef enum {
+ EGG_WRAP_ALLOCATE_FREE = 0,
+ EGG_WRAP_ALLOCATE_ALIGNED,
+ EGG_WRAP_ALLOCATE_HOMOGENEOUS
+} EggWrapAllocationMode;
+
+
+/**
+ * EggWrapBoxSpreading:
+ * @EGG_WRAP_BOX_SPREAD_START: Children are allocated no more than their natural size
+ * in the given orientation and any extra space is left trailing at
+ * the end of each row/column.
+ * @EGG_WRAP_BOX_SPREAD_END: Children are allocated no more than their natural size
+ * in the given orientation and any extra space skipped at the beginning
+ * of each row/column.
+ * @EGG_WRAP_BOX_SPREAD_EVEN: Children are allocated no more than their natural size
+ * in the given orientation and any extra space is evenly distributed
+ * as empty space between children.
+ * @EGG_WRAP_BOX_SPREAD_EXPAND: Extra space is given to children which asked to expand in the given
+ * orientation (or columns/rows which contain children who asked to expand).
+ * If no children asked to expand; extra space is distributed evenly.
+ *
+ * Describes how a #EggWrapBox deals with extra space in a given orientation when allocating children.
+ */
+typedef enum {
+ EGG_WRAP_BOX_SPREAD_START = 0,
+ EGG_WRAP_BOX_SPREAD_END,
+ EGG_WRAP_BOX_SPREAD_EVEN,
+ EGG_WRAP_BOX_SPREAD_EXPAND
+} EggWrapBoxSpreading;
+
+/**
+ * EggWrapBoxPacking:
+ * @EGG_WRAP_BOX_H_EXPAND: Whether the child expands horizontally.
+ * @EGG_WRAP_BOX_V_EXPAND: Whether the child expands vertically.
+ *
+ * Specifies how widgets will expand vertically and
+ * horizontally when placed inside a #EggWrapBox.
+ */
+typedef enum
+{
+ EGG_WRAP_BOX_H_EXPAND = 1 << 0,
+ EGG_WRAP_BOX_V_EXPAND = 1 << 1
+} EggWrapBoxPacking;
+
+
+struct _EggWrapBox
+{
+ GtkContainer container;
+
+ /*< private >*/
+ EggWrapBoxPrivate *priv;
+};
+
+struct _EggWrapBoxClass
+{
+ GtkContainerClass parent_class;
+};
+
+GType egg_wrap_box_get_type (void) G_GNUC_CONST;
+
+GtkWidget *egg_wrap_box_new (EggWrapAllocationMode mode,
+ EggWrapBoxSpreading horizontal_spreading,
+ EggWrapBoxSpreading vertical_spreading,
+ guint horizontal_spacing,
+ guint vertical_spacing);
+void egg_wrap_box_set_allocation_mode (EggWrapBox *box,
+ EggWrapAllocationMode mode);
+EggWrapAllocationMode egg_wrap_box_get_allocation_mode (EggWrapBox *box);
+
+void egg_wrap_box_set_horizontal_spreading (EggWrapBox *box,
+ EggWrapBoxSpreading spreading);
+EggWrapBoxSpreading egg_wrap_box_get_horizontal_spreading (EggWrapBox *box);
+
+void egg_wrap_box_set_vertical_spreading (EggWrapBox *box,
+ EggWrapBoxSpreading spreading);
+EggWrapBoxSpreading egg_wrap_box_get_vertical_spreading (EggWrapBox *box);
+
+void egg_wrap_box_set_vertical_spacing (EggWrapBox *box,
+ guint spacing);
+guint egg_wrap_box_get_vertical_spacing (EggWrapBox *box);
+
+void egg_wrap_box_set_horizontal_spacing (EggWrapBox *box,
+ guint spacing);
+guint egg_wrap_box_get_horizontal_spacing (EggWrapBox *box);
+
+void egg_wrap_box_set_minimum_line_children (EggWrapBox *box,
+ guint n_children);
+guint egg_wrap_box_get_minimum_line_children (EggWrapBox *box);
+
+void egg_wrap_box_set_natural_line_children (EggWrapBox *box,
+ guint n_children);
+guint egg_wrap_box_get_natural_line_children (EggWrapBox *box);
+
+void egg_wrap_box_insert_child (EggWrapBox *box,
+ GtkWidget *widget,
+ gint index,
+ EggWrapBoxPacking packing);
+
+void egg_wrap_box_reorder_child (EggWrapBox *box,
+ GtkWidget *widget,
+ guint index);
+
+G_END_DECLS
+
+
+#endif /* __EGG_WRAP_BOX_H__ */
diff --git a/libegg/wrapbox/testwrapbox.c b/libegg/wrapbox/testwrapbox.c
new file mode 100644
index 0000000..02f91e3
--- /dev/null
+++ b/libegg/wrapbox/testwrapbox.c
@@ -0,0 +1,497 @@
+/* testwrapbox.c
+ * Copyright (C) 2010 Openismus GmbH
+ *
+ * Author:
+ * Tristan Van Berkom <tristanvb openismus com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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 <gtk/gtk.h>
+#include "eggwrapbox.h"
+
+enum {
+ SIMPLE_ITEMS = 0,
+ WRAPPY_ITEMS,
+ STOCK_ITEMS
+};
+
+#define INITIAL_ALLOCATION_MODE EGG_WRAP_ALLOCATE_HOMOGENEOUS
+#define INITIAL_SPREADING EGG_WRAP_BOX_SPREAD_START
+#define INITIAL_MINIMUM_LENGTH 3
+#define INITIAL_HSPACING 2
+#define INITIAL_VSPACING 2
+
+static EggWrapBox *the_wrapbox = NULL;
+static gint items_type = SIMPLE_ITEMS;
+static GtkOrientation text_orientation = GTK_ORIENTATION_HORIZONTAL;
+static gboolean items_xexpand = TRUE;
+static gboolean items_yexpand = TRUE;
+
+
+static void
+populate_wrapbox_simple (EggWrapBox *wrapbox)
+{
+ GtkWidget *widget, *frame;
+ gint i;
+
+ for (i = 0; i < 30; i++)
+ {
+ gchar *text = g_strdup_printf ("Item %02d", i);
+
+ widget = gtk_label_new (text);
+ frame = gtk_frame_new (NULL);
+ gtk_widget_show (widget);
+ gtk_widget_show (frame);
+
+ gtk_container_add (GTK_CONTAINER (frame), widget);
+
+ if (text_orientation == GTK_ORIENTATION_VERTICAL)
+ gtk_label_set_angle (GTK_LABEL (widget), 90);
+
+ egg_wrap_box_insert_child (EGG_WRAP_BOX (wrapbox), frame, -1,
+ (items_xexpand ? EGG_WRAP_BOX_H_EXPAND : 0) |
+ (items_yexpand ? EGG_WRAP_BOX_V_EXPAND : 0));
+
+ g_free (text);
+ }
+}
+
+static void
+populate_wrapbox_wrappy (EggWrapBox *wrapbox)
+{
+ GtkWidget *widget, *frame;
+ gint i;
+
+ const gchar *strings[] = {
+ "These are", "some wrappy label", "texts", "of various", "lengths.",
+ "They should always be", "shown", "consecutively. Except it's",
+ "hard to say", "where exactly the", "label", "will wrap", "and where exactly",
+ "the actual", "container", "will wrap.", "This label is really really really long !",
+ "Let's add some more", "labels to the",
+ "mix. Just to", "make sure we", "got something to work", "with here."
+ };
+
+ for (i = 0; i < G_N_ELEMENTS (strings); i++)
+ {
+ widget = gtk_label_new (strings[i]);
+ frame = gtk_frame_new (NULL);
+ gtk_widget_show (widget);
+ gtk_widget_show (frame);
+
+ if (text_orientation == GTK_ORIENTATION_VERTICAL)
+ gtk_label_set_angle (GTK_LABEL (widget), 90);
+
+ gtk_container_add (GTK_CONTAINER (frame), widget);
+
+ gtk_label_set_line_wrap (GTK_LABEL (widget), TRUE);
+ gtk_label_set_line_wrap_mode (GTK_LABEL (widget), PANGO_WRAP_WORD);
+ gtk_label_set_width_chars (GTK_LABEL (widget), 10);
+
+ egg_wrap_box_insert_child (EGG_WRAP_BOX (wrapbox), frame, -1,
+ (items_xexpand ? EGG_WRAP_BOX_H_EXPAND : 0) |
+ (items_yexpand ? EGG_WRAP_BOX_V_EXPAND : 0));
+ }
+}
+
+
+static void
+populate_wrapbox_stock (EggWrapBox *wrapbox)
+{
+ GtkWidget *widget;
+ static GSList *stock_ids = NULL;
+ GSList *l;
+ gint i;
+
+ if (!stock_ids)
+ stock_ids = gtk_stock_list_ids ();
+
+ for (i = 0, l = stock_ids; i < 30 && l != NULL; i++, l = l->next)
+ {
+ gchar *stock_id = l->data;
+
+ widget = gtk_button_new_from_stock (stock_id);
+ gtk_widget_show (widget);
+
+ egg_wrap_box_insert_child (EGG_WRAP_BOX (wrapbox), widget, -1,
+ (items_xexpand ? EGG_WRAP_BOX_H_EXPAND : 0) |
+ (items_yexpand ? EGG_WRAP_BOX_V_EXPAND : 0));
+ }
+}
+
+static void
+populate_items (EggWrapBox *wrapbox)
+{
+ GList *children, *l;
+
+ /* Remove all children first */
+ children = gtk_container_get_children (GTK_CONTAINER (wrapbox));
+ for (l = children; l; l = l->next)
+ {
+ GtkWidget *child = l->data;
+
+ gtk_container_remove (GTK_CONTAINER (wrapbox), child);
+ }
+ g_list_free (children);
+
+ if (items_type == SIMPLE_ITEMS)
+ populate_wrapbox_simple (wrapbox);
+ else if (items_type == WRAPPY_ITEMS)
+ populate_wrapbox_wrappy (wrapbox);
+ else if (items_type == STOCK_ITEMS)
+ populate_wrapbox_stock (wrapbox);
+}
+
+
+static void
+mode_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ EggWrapAllocationMode mode = gtk_combo_box_get_active (box);
+
+ egg_wrap_box_set_allocation_mode (wrapbox, mode);
+}
+
+static void
+horizontal_spreading_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ EggWrapBoxSpreading spreading = gtk_combo_box_get_active (box);
+
+ egg_wrap_box_set_horizontal_spreading (wrapbox, spreading);
+}
+
+static void
+vertical_spreading_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ EggWrapBoxSpreading spreading = gtk_combo_box_get_active (box);
+
+ egg_wrap_box_set_vertical_spreading (wrapbox, spreading);
+}
+
+static void
+orientation_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ GtkOrientation orientation = gtk_combo_box_get_active (box);
+
+ gtk_orientable_set_orientation (GTK_ORIENTABLE (wrapbox), orientation);
+}
+
+static void
+line_length_changed (GtkSpinButton *spin,
+ EggWrapBox *wrapbox)
+{
+ gint length = gtk_spin_button_get_value_as_int (spin);
+
+ egg_wrap_box_set_minimum_line_children (wrapbox, length);
+}
+
+static void
+spacing_changed (GtkSpinButton *button,
+ gpointer data)
+{
+ GtkOrientation orientation = GPOINTER_TO_INT (data);
+ gint state = gtk_spin_button_get_value_as_int (button);
+
+ if (orientation == GTK_ORIENTATION_HORIZONTAL)
+ egg_wrap_box_set_horizontal_spacing (the_wrapbox, state);
+ else
+ egg_wrap_box_set_vertical_spacing (the_wrapbox, state);
+}
+
+
+static void
+items_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ items_type = gtk_combo_box_get_active (box);
+
+ populate_items (wrapbox);
+}
+
+static void
+text_orientation_changed (GtkComboBox *box,
+ EggWrapBox *wrapbox)
+{
+ text_orientation = gtk_combo_box_get_active (box);
+
+ populate_items (wrapbox);
+}
+
+static void
+child_option_toggled (GtkToggleButton *button,
+ gboolean *state)
+{
+ *state = gtk_toggle_button_get_active (button);
+
+ populate_items (the_wrapbox);
+}
+
+static GtkWidget *
+create_window (void)
+{
+ GtkWidget *window, *hbox, *vbox, *frame, *wrapbox_cntl, *items_cntl;
+ GtkWidget *wrapbox, *widget, *expander, *swindow;
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ hbox = gtk_hbox_new (FALSE, 2);
+ vbox = gtk_vbox_new (FALSE, 6);
+
+ gtk_container_set_border_width (GTK_CONTAINER (window), 8);
+
+ gtk_widget_show (vbox);
+ gtk_widget_show (hbox);
+ gtk_container_add (GTK_CONTAINER (window), hbox);
+ gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
+
+ frame = gtk_frame_new ("Wrap Box");
+ gtk_widget_show (frame);
+ gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
+
+ swindow = gtk_scrolled_window_new (NULL, NULL);
+ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
+ GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+
+ gtk_widget_show (swindow);
+ gtk_container_add (GTK_CONTAINER (frame), swindow);
+
+ wrapbox = egg_wrap_box_new (INITIAL_ALLOCATION_MODE, INITIAL_SPREADING,
+ INITIAL_SPREADING, INITIAL_HSPACING, INITIAL_VSPACING);
+ the_wrapbox = (EggWrapBox *)wrapbox;
+ egg_wrap_box_set_minimum_line_children (EGG_WRAP_BOX (wrapbox), INITIAL_MINIMUM_LENGTH);
+ gtk_widget_show (wrapbox);
+ gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (swindow), wrapbox);
+
+ /* Add Wrapbox test control frame */
+ expander = gtk_expander_new ("Wrap Box controls");
+ gtk_expander_set_expanded (GTK_EXPANDER (expander), TRUE);
+ wrapbox_cntl = gtk_vbox_new (FALSE, 2);
+ gtk_widget_show (wrapbox_cntl);
+ gtk_widget_show (expander);
+ gtk_container_add (GTK_CONTAINER (expander), wrapbox_cntl);
+ gtk_box_pack_start (GTK_BOX (vbox), expander, FALSE, FALSE, 0);
+
+ /* Add Allocation mode control */
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Wrap Freely");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Align items");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Homogeneous");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), INITIAL_ALLOCATION_MODE);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the wrapbox allocation mode");
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (mode_changed), wrapbox);
+
+ /* Add Spreading controls */
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Start");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread End");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Even");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Expand");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), INITIAL_SPREADING);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the horizontal spreading mode");
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (horizontal_spreading_changed), wrapbox);
+
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Start");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread End");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Even");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Spread Expand");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), INITIAL_SPREADING);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the vertical spreading mode");
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (vertical_spreading_changed), wrapbox);
+
+ /* Add Orientation control */
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Horizontal");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Vertical");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the wrapbox orientation");
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (orientation_changed), wrapbox);
+
+ /* Add minimum line length in items control */
+ widget = gtk_spin_button_new_with_range (1, 10, 1);
+ gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), INITIAL_MINIMUM_LENGTH);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the minimum amount of items per line before wrapping");
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (line_length_changed), wrapbox);
+ g_signal_connect (G_OBJECT (widget), "value-changed",
+ G_CALLBACK (line_length_changed), wrapbox);
+
+ /* Add horizontal/vertical spacing controls */
+ hbox = gtk_hbox_new (FALSE, 2);
+ gtk_widget_show (hbox);
+
+ widget = gtk_label_new ("H Spacing");
+ gtk_widget_show (widget);
+ gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
+
+ widget = gtk_spin_button_new_with_range (0, 30, 1);
+ gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), INITIAL_HSPACING);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the horizontal spacing between children");
+ gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (spacing_changed), GINT_TO_POINTER (GTK_ORIENTATION_HORIZONTAL));
+ g_signal_connect (G_OBJECT (widget), "value-changed",
+ G_CALLBACK (spacing_changed), GINT_TO_POINTER (GTK_ORIENTATION_HORIZONTAL));
+
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), hbox, FALSE, FALSE, 0);
+
+ hbox = gtk_hbox_new (FALSE, 2);
+ gtk_widget_show (hbox);
+
+ widget = gtk_label_new ("V Spacing");
+ gtk_widget_show (widget);
+ gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
+
+ widget = gtk_spin_button_new_with_range (0, 30, 1);
+ gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), INITIAL_VSPACING);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the vertical spacing between children");
+ gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (spacing_changed), GINT_TO_POINTER (GTK_ORIENTATION_VERTICAL));
+ g_signal_connect (G_OBJECT (widget), "value-changed",
+ G_CALLBACK (spacing_changed), GINT_TO_POINTER (GTK_ORIENTATION_VERTICAL));
+
+ gtk_box_pack_start (GTK_BOX (wrapbox_cntl), hbox, FALSE, FALSE, 0);
+
+
+ /* Add test items control frame */
+ expander = gtk_expander_new ("Test item controls");
+ gtk_expander_set_expanded (GTK_EXPANDER (expander), TRUE);
+ items_cntl = gtk_vbox_new (FALSE, 2);
+ gtk_widget_show (items_cntl);
+ gtk_widget_show (expander);
+ gtk_container_add (GTK_CONTAINER (expander), items_cntl);
+ gtk_box_pack_start (GTK_BOX (vbox), expander, FALSE, FALSE, 0);
+
+ /* Add Items control */
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Simple");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Wrappy");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Stock");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the item set to use");
+ gtk_box_pack_start (GTK_BOX (items_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (items_changed), wrapbox);
+
+
+ /* Add Text Orientation control */
+ widget = gtk_combo_box_new_text ();
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Horizontal");
+ gtk_combo_box_append_text (GTK_COMBO_BOX (widget), "Vertical");
+ gtk_combo_box_set_active (GTK_COMBO_BOX (widget), 0);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set the item's text orientation (cant be done for stock buttons)");
+ gtk_box_pack_start (GTK_BOX (items_cntl), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "changed",
+ G_CALLBACK (text_orientation_changed), wrapbox);
+
+
+ /* Add expand options */
+ hbox = gtk_hbox_new (FALSE, 2);
+ gtk_widget_show (hbox);
+
+ widget = gtk_check_button_new_with_label ("X Expand");
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), TRUE);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set whether the items expand horizontally");
+ gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "toggled",
+ G_CALLBACK (child_option_toggled), &items_xexpand);
+
+
+ widget = gtk_check_button_new_with_label ("Y Expand");
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), TRUE);
+ gtk_widget_show (widget);
+
+ gtk_widget_set_tooltip_text (widget, "Set whether the items expand vertically");
+ gtk_box_pack_start (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+
+ g_signal_connect (G_OBJECT (widget), "toggled",
+ G_CALLBACK (child_option_toggled), &items_yexpand);
+
+ gtk_box_pack_start (GTK_BOX (items_cntl), hbox, FALSE, FALSE, 0);
+
+ populate_items (EGG_WRAP_BOX (wrapbox));
+
+ /* This line was added only for the convenience of reproducing
+ * a height-for-width inside GtkScrolledWindow bug (bug 629778).
+ * -Tristan
+ */
+ gtk_window_set_default_size (GTK_WINDOW (window), 390, -1);
+
+ return window;
+}
+
+
+
+int
+main (int argc, char *argv[])
+{
+ GtkWidget *window;
+
+ gtk_init (&argc, &argv);
+
+ window = create_window ();
+
+ g_signal_connect (window, "delete-event",
+ G_CALLBACK (gtk_main_quit), window);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+
+ return 0;
+}
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