mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-11 03:10:09 +00:00
36ab70ddf5
Since setting a clip is mandatory for almost all widgets, we can as well change the size-allocate signature to include a out_clip parameter, just like GtkCssGadget did. And since we now always propagate baselines, we might as well pass that one on to size-allocate. This way we can also make sure to transform the clip returned from size-allocate to parent-coordinates, i.e. the same coordinate space priv->allocation is in.
513 lines
13 KiB
C
513 lines
13 KiB
C
/* GTK - The GIMP Toolkit
|
|
* Copyright (C) 2017 Benjamin Otte <otte@gnome.org>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gtkfishbowl.h"
|
|
|
|
typedef struct _GtkFishbowlPrivate GtkFishbowlPrivate;
|
|
typedef struct _GtkFishbowlChild GtkFishbowlChild;
|
|
|
|
struct _GtkFishbowlPrivate
|
|
{
|
|
GList *children;
|
|
guint count;
|
|
|
|
gint64 last_frame_time;
|
|
guint tick_id;
|
|
|
|
guint use_icons: 1;
|
|
};
|
|
|
|
struct _GtkFishbowlChild
|
|
{
|
|
GtkWidget *widget;
|
|
double x;
|
|
double y;
|
|
double dx;
|
|
double dy;
|
|
};
|
|
|
|
enum {
|
|
PROP_0,
|
|
PROP_ANIMATING,
|
|
PROP_COUNT,
|
|
NUM_PROPERTIES
|
|
};
|
|
|
|
static GParamSpec *props[NUM_PROPERTIES] = { NULL, };
|
|
|
|
G_DEFINE_TYPE_WITH_PRIVATE (GtkFishbowl, gtk_fishbowl, GTK_TYPE_CONTAINER)
|
|
|
|
static void
|
|
gtk_fishbowl_init (GtkFishbowl *fishbowl)
|
|
{
|
|
gtk_widget_set_has_window (GTK_WIDGET (fishbowl), FALSE);
|
|
}
|
|
|
|
/**
|
|
* gtk_fishbowl_new:
|
|
*
|
|
* Creates a new #GtkFishbowl.
|
|
*
|
|
* Returns: a new #GtkFishbowl.
|
|
*/
|
|
GtkWidget*
|
|
gtk_fishbowl_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_FISHBOWL, NULL);
|
|
}
|
|
|
|
void
|
|
gtk_fishbowl_set_use_icons (GtkFishbowl *fishbowl,
|
|
gboolean use_icons)
|
|
{
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
|
|
priv->use_icons = use_icons;
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_measure (GtkWidget *widget,
|
|
GtkOrientation orientation,
|
|
int for_size,
|
|
int *minimum,
|
|
int *natural,
|
|
int *minimum_baseline,
|
|
int *natural_baseline)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (widget);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child;
|
|
GList *children;
|
|
gint child_min, child_nat;
|
|
|
|
*minimum = 0;
|
|
*natural = 0;
|
|
|
|
for (children = priv->children; children; children = children->next)
|
|
{
|
|
child = children->data;
|
|
|
|
if (!gtk_widget_get_visible (child->widget))
|
|
continue;
|
|
|
|
gtk_widget_measure (child->widget, orientation, -1, &child_min, &child_nat, NULL, NULL);
|
|
|
|
*minimum = MAX (*minimum, child_min);
|
|
*natural = MAX (*natural, child_nat);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_size_allocate (GtkWidget *widget,
|
|
const GtkAllocation *allocation,
|
|
int baseline,
|
|
GtkAllocation *out_clip)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (widget);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child;
|
|
GtkAllocation child_allocation;
|
|
GtkRequisition child_requisition;
|
|
GList *children;
|
|
|
|
for (children = priv->children; children; children = children->next)
|
|
{
|
|
GtkAllocation child_clip;
|
|
|
|
child = children->data;
|
|
|
|
if (!gtk_widget_get_visible (child->widget))
|
|
continue;
|
|
|
|
gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
|
|
child_allocation.x = allocation->x + round (child->x * (allocation->width - child_requisition.width));
|
|
child_allocation.y = allocation->y + round (child->y * (allocation->height - child_requisition.height));
|
|
child_allocation.width = child_requisition.width;
|
|
child_allocation.height = child_requisition.height;
|
|
|
|
gtk_widget_size_allocate (child->widget, &child_allocation, -1, &child_clip);
|
|
}
|
|
}
|
|
|
|
static double
|
|
new_speed (void)
|
|
{
|
|
/* 5s to 50s to cross screen seems fair */
|
|
return g_random_double_range (0.02, 0.2);
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_add (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child_info;
|
|
|
|
g_return_if_fail (GTK_IS_FISHBOWL (fishbowl));
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
child_info = g_new0 (GtkFishbowlChild, 1);
|
|
child_info->widget = widget;
|
|
child_info->x = 0;
|
|
child_info->y = 0;
|
|
child_info->dx = new_speed ();
|
|
child_info->dy = new_speed ();
|
|
|
|
gtk_widget_set_parent (widget, GTK_WIDGET (fishbowl));
|
|
|
|
priv->children = g_list_prepend (priv->children, child_info);
|
|
priv->count++;
|
|
g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_COUNT]);
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_remove (GtkContainer *container,
|
|
GtkWidget *widget)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child;
|
|
GtkWidget *widget_container = GTK_WIDGET (container);
|
|
GList *children;
|
|
|
|
for (children = priv->children; children; children = children->next)
|
|
{
|
|
child = children->data;
|
|
|
|
if (child->widget == widget)
|
|
{
|
|
gboolean was_visible = gtk_widget_get_visible (widget);
|
|
|
|
gtk_widget_unparent (widget);
|
|
|
|
priv->children = g_list_remove_link (priv->children, children);
|
|
g_list_free (children);
|
|
g_free (child);
|
|
|
|
if (was_visible && gtk_widget_get_visible (widget_container))
|
|
gtk_widget_queue_resize (widget_container);
|
|
|
|
priv->count--;
|
|
g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_COUNT]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_forall (GtkContainer *container,
|
|
GtkCallback callback,
|
|
gpointer callback_data)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (container);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child;
|
|
GList *children;
|
|
|
|
children = priv->children;
|
|
while (children)
|
|
{
|
|
child = children->data;
|
|
children = children->next;
|
|
|
|
(* callback) (child->widget, callback_data);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_dispose (GObject *object)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (object);
|
|
|
|
gtk_fishbowl_set_animating (fishbowl, FALSE);
|
|
gtk_fishbowl_set_count (fishbowl, 0);
|
|
|
|
G_OBJECT_CLASS (gtk_fishbowl_parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_ANIMATING:
|
|
gtk_fishbowl_set_animating (fishbowl, g_value_get_boolean (value));
|
|
break;
|
|
|
|
case PROP_COUNT:
|
|
gtk_fishbowl_set_count (fishbowl, g_value_get_uint (value));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_ANIMATING:
|
|
g_value_set_boolean (value, gtk_fishbowl_get_animating (fishbowl));
|
|
break;
|
|
|
|
case PROP_COUNT:
|
|
g_value_set_uint (value, gtk_fishbowl_get_count (fishbowl));
|
|
break;
|
|
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_fishbowl_class_init (GtkFishbowlClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
|
|
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
|
|
|
|
object_class->dispose = gtk_fishbowl_dispose;
|
|
object_class->set_property = gtk_fishbowl_set_property;
|
|
object_class->get_property = gtk_fishbowl_get_property;
|
|
|
|
widget_class->measure = gtk_fishbowl_measure;
|
|
widget_class->size_allocate = gtk_fishbowl_size_allocate;
|
|
|
|
container_class->add = gtk_fishbowl_add;
|
|
container_class->remove = gtk_fishbowl_remove;
|
|
container_class->forall = gtk_fishbowl_forall;
|
|
|
|
props[PROP_ANIMATING] =
|
|
g_param_spec_boolean ("animating",
|
|
"animating",
|
|
"Whether children are moving around",
|
|
FALSE,
|
|
G_PARAM_READWRITE);
|
|
|
|
props[PROP_COUNT] =
|
|
g_param_spec_uint ("count",
|
|
"Count",
|
|
"Number of widgets",
|
|
0, G_MAXUINT,
|
|
0,
|
|
G_PARAM_READABLE);
|
|
|
|
g_object_class_install_properties (object_class, NUM_PROPERTIES, props);
|
|
}
|
|
|
|
guint
|
|
gtk_fishbowl_get_count (GtkFishbowl *fishbowl)
|
|
{
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
|
|
return priv->count;
|
|
}
|
|
|
|
char **icon_names = NULL;
|
|
gsize n_icon_names = 0;
|
|
|
|
static void
|
|
init_icon_names (GtkIconTheme *theme)
|
|
{
|
|
GPtrArray *icons;
|
|
GList *l, *icon_list;
|
|
|
|
if (icon_names)
|
|
return;
|
|
|
|
icon_list = gtk_icon_theme_list_icons (theme, NULL);
|
|
icons = g_ptr_array_new ();
|
|
|
|
for (l = icon_list; l; l = l->next)
|
|
{
|
|
if (g_str_has_suffix (l->data, "symbolic"))
|
|
continue;
|
|
|
|
g_ptr_array_add (icons, g_strdup (l->data));
|
|
}
|
|
|
|
n_icon_names = icons->len;
|
|
g_ptr_array_add (icons, NULL); /* NULL-terminate the array */
|
|
icon_names = (char **) g_ptr_array_free (icons, FALSE);
|
|
|
|
/* don't free strings, we assigned them to the array */
|
|
g_list_free_full (icon_list, g_free);
|
|
}
|
|
|
|
static const char *
|
|
get_random_icon_name (GtkIconTheme *theme)
|
|
{
|
|
init_icon_names (theme);
|
|
|
|
return icon_names[g_random_int_range(0, n_icon_names)];
|
|
}
|
|
|
|
static GType
|
|
get_random_widget_type ()
|
|
{
|
|
GType types[] = {
|
|
GTK_TYPE_SWITCH,
|
|
GTK_TYPE_BUTTON,
|
|
GTK_TYPE_ENTRY,
|
|
GTK_TYPE_SPIN_BUTTON,
|
|
GTK_TYPE_FONT_BUTTON,
|
|
GTK_TYPE_SCROLLBAR,
|
|
GTK_TYPE_SCALE,
|
|
GTK_TYPE_LEVEL_BAR,
|
|
GTK_TYPE_PROGRESS_BAR,
|
|
GTK_TYPE_RADIO_BUTTON,
|
|
GTK_TYPE_CHECK_BUTTON
|
|
};
|
|
return types[g_random_int_range (0, G_N_ELEMENTS (types))];
|
|
}
|
|
|
|
void
|
|
gtk_fishbowl_set_count (GtkFishbowl *fishbowl,
|
|
guint count)
|
|
{
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
|
|
g_object_freeze_notify (G_OBJECT (fishbowl));
|
|
|
|
while (priv->count > count)
|
|
{
|
|
gtk_container_remove (GTK_CONTAINER (fishbowl),
|
|
((GtkFishbowlChild *) priv->children->data)->widget);
|
|
}
|
|
|
|
while (priv->count < count)
|
|
{
|
|
GtkWidget *new_widget;
|
|
|
|
if (priv->use_icons)
|
|
new_widget = gtk_image_new_from_icon_name (get_random_icon_name (gtk_icon_theme_get_default ()),
|
|
GTK_ICON_SIZE_DIALOG);
|
|
else
|
|
new_widget = g_object_new (get_random_widget_type (), NULL);
|
|
|
|
gtk_container_add (GTK_CONTAINER (fishbowl), new_widget);
|
|
}
|
|
|
|
g_object_thaw_notify (G_OBJECT (fishbowl));
|
|
}
|
|
|
|
gboolean
|
|
gtk_fishbowl_get_animating (GtkFishbowl *fishbowl)
|
|
{
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
|
|
return priv->tick_id != 0;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_fishbowl_tick (GtkWidget *widget,
|
|
GdkFrameClock *frame_clock,
|
|
gpointer unused)
|
|
{
|
|
GtkFishbowl *fishbowl = GTK_FISHBOWL (widget);
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
GtkFishbowlChild *child;
|
|
GList *l;
|
|
gint64 frame_time, elapsed;
|
|
|
|
frame_time = gdk_frame_clock_get_frame_time (gtk_widget_get_frame_clock (widget));
|
|
elapsed = frame_time - priv->last_frame_time;
|
|
priv->last_frame_time = frame_time;
|
|
|
|
/* last frame was 0, so we're just starting to animate */
|
|
if (elapsed == frame_time)
|
|
return G_SOURCE_CONTINUE;
|
|
|
|
for (l = priv->children; l; l = l->next)
|
|
{
|
|
child = l->data;
|
|
|
|
child->x += child->dx * ((double) elapsed / G_USEC_PER_SEC);
|
|
child->y += child->dy * ((double) elapsed / G_USEC_PER_SEC);
|
|
|
|
if (child->x <= 0)
|
|
{
|
|
child->x = 0;
|
|
child->dx = new_speed ();
|
|
}
|
|
else if (child->x >= 1)
|
|
{
|
|
child->x = 1;
|
|
child->dx = - new_speed ();
|
|
}
|
|
|
|
if (child->y <= 0)
|
|
{
|
|
child->y = 0;
|
|
child->dy = new_speed ();
|
|
}
|
|
else if (child->y >= 1)
|
|
{
|
|
child->y = 1;
|
|
child->dy = - new_speed ();
|
|
}
|
|
}
|
|
|
|
gtk_widget_queue_allocate (widget);
|
|
|
|
return G_SOURCE_CONTINUE;
|
|
}
|
|
|
|
void
|
|
gtk_fishbowl_set_animating (GtkFishbowl *fishbowl,
|
|
gboolean animating)
|
|
{
|
|
GtkFishbowlPrivate *priv = gtk_fishbowl_get_instance_private (fishbowl);
|
|
|
|
if (gtk_fishbowl_get_animating (fishbowl) == animating)
|
|
return;
|
|
|
|
if (animating)
|
|
{
|
|
priv->tick_id = gtk_widget_add_tick_callback (GTK_WIDGET (fishbowl),
|
|
gtk_fishbowl_tick,
|
|
NULL,
|
|
NULL);
|
|
}
|
|
else
|
|
{
|
|
priv->last_frame_time = 0;
|
|
gtk_widget_remove_tick_callback (GTK_WIDGET (fishbowl), priv->tick_id);
|
|
priv->tick_id = 0;
|
|
}
|
|
|
|
g_object_notify_by_pspec (G_OBJECT (fishbowl), props[PROP_ANIMATING]);
|
|
}
|
|
|