dnrops
/
gimp
mirror of https://github.com/GNOME/gimp.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
gimp/app/widgets/gimplistitem.c

593 lines
18 KiB
C
Raw Blame History

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimplistitem.c
* Copyright (C) 2001 Michael Natterer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "widgets-types.h"
#include "core/gimpchannel.h"
#include "core/gimpcontainer.h"
#include "core/gimplayer.h"
#include "core/gimpmarshal.h"
#include "core/gimpviewable.h"
#include "gimpchannellistitem.h"
#include "gimpdnd.h"
#include "gimpdrawablelistitem.h"
#include "gimplayerlistitem.h"
#include "gimplistitem.h"
#include "gimppreview.h"
enum
{
SET_VIEWABLE,
SET_PREVIEW_SIZE,
LAST_SIGNAL
};
static void gimp_list_item_class_init (GimpListItemClass *klass);
static void gimp_list_item_init (GimpListItem *list_item);
static void gimp_list_item_real_set_viewable (GimpListItem *list_item,
GimpViewable *viewable);
static void gimp_list_item_real_set_preview_size (GimpListItem *list_item);
static gboolean gimp_list_item_expose_event (GtkWidget *widget,
GdkEventExpose *eevent);
static void gimp_list_item_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gimp_list_item_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean gimp_list_item_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gimp_list_item_name_changed (GimpViewable *viewable,
GimpListItem *list_item);
static GimpViewable * gimp_list_item_drag_viewable (GtkWidget *widget,
gpointer data);
static guint list_item_signals[LAST_SIGNAL] = { 0 };
static GtkListItemClass *parent_class = NULL;
GtkType
gimp_list_item_get_type (void)
{
static GtkType list_item_type = 0;
if (!list_item_type)
{
static const GtkTypeInfo list_item_info =
{
"GimpListItem",
sizeof (GimpListItem),
sizeof (GimpListItemClass),
(GtkClassInitFunc) gimp_list_item_class_init,
(GtkObjectInitFunc) gimp_list_item_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
list_item_type = gtk_type_unique (GTK_TYPE_LIST_ITEM, &list_item_info);
}
return list_item_type;
}
static void
gimp_list_item_class_init (GimpListItemClass *klass)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = (GtkObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
parent_class = g_type_class_peek_parent (klass);
list_item_signals[SET_VIEWABLE] =
g_signal_new ("set_viewable",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpListItemClass, set_viewable),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
GIMP_TYPE_VIEWABLE);
list_item_signals[SET_PREVIEW_SIZE] =
g_signal_new ("set_preview_size",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GimpListItemClass, set_preview_size),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
widget_class->expose_event = gimp_list_item_expose_event;
widget_class->drag_leave = gimp_list_item_drag_leave;
widget_class->drag_motion = gimp_list_item_drag_motion;
widget_class->drag_drop = gimp_list_item_drag_drop;
klass->set_viewable = gimp_list_item_real_set_viewable;
klass->set_preview_size = gimp_list_item_real_set_preview_size;
}
static void
gimp_list_item_init (GimpListItem *list_item)
{
list_item->hbox = gtk_hbox_new (FALSE, 6);
gtk_container_set_border_width (GTK_CONTAINER (list_item->hbox), 2);
gtk_container_add (GTK_CONTAINER (list_item), list_item->hbox);
gtk_widget_show (list_item->hbox);
list_item->preview = NULL;
list_item->name_label = NULL;
list_item->preview_size = 0;
list_item->reorderable = FALSE;
list_item->drop_type = GIMP_DROP_NONE;
list_item->container = NULL;
list_item->get_name_func = NULL;
}
static gboolean
gimp_list_item_expose_event (GtkWidget *widget,
GdkEventExpose *eevent)
{
GimpListItem *list_item;
list_item = GIMP_LIST_ITEM (widget);
if (GTK_WIDGET_CLASS (parent_class)->expose_event)
GTK_WIDGET_CLASS (parent_class)->expose_event (widget, eevent);
if (list_item->drop_type != GIMP_DROP_NONE)
{
gint x, y;
x = list_item->name_label->allocation.x;
y = ((list_item->drop_type == GIMP_DROP_ABOVE) ?
3 : widget->allocation.height - 4);
gdk_gc_set_line_attributes (widget->style->black_gc, 5, GDK_LINE_SOLID,
GDK_CAP_BUTT, GDK_JOIN_MITER);
gdk_gc_set_clip_rectangle (widget->style->black_gc, &eevent->area);
gdk_draw_line (widget->window, widget->style->black_gc,
x, y,
widget->allocation.width - 3, y);
gdk_gc_set_clip_rectangle (widget->style->black_gc, NULL);
gdk_gc_set_line_attributes (widget->style->black_gc, 0, GDK_LINE_SOLID,
GDK_CAP_BUTT, GDK_JOIN_MITER);
}
return FALSE;
}
static void
gimp_list_item_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GimpListItem *list_item;
list_item = GIMP_LIST_ITEM (widget);
list_item->drop_type = GIMP_DROP_NONE;
}
static gboolean
gimp_list_item_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GimpListItem *list_item;
GimpViewable *src_viewable;
gint dest_index;
GdkDragAction drag_action;
GimpDropType drop_type;
gboolean return_val;
list_item = GIMP_LIST_ITEM (widget);
return_val = gimp_list_item_check_drag (list_item, context, x, y,
&src_viewable,
&dest_index,
&drag_action,
&drop_type);
gdk_drag_status (context, drag_action, time);
list_item->drop_type = drop_type;
return return_val;
}
static gboolean
gimp_list_item_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GimpListItem *list_item;
GimpViewable *src_viewable;
gint dest_index;
GdkDragAction drag_action;
GimpDropType drop_type;
gboolean return_val;
list_item = GIMP_LIST_ITEM (widget);
return_val = gimp_list_item_check_drag (list_item, context, x, y,
&src_viewable,
&dest_index,
&drag_action,
&drop_type);
gtk_drag_finish (context, return_val, FALSE, time);
list_item->drop_type = GIMP_DROP_NONE;
if (return_val)
{
gimp_container_reorder (list_item->container, GIMP_OBJECT (src_viewable),
dest_index);
}
return return_val;
}
GtkWidget *
gimp_list_item_new (GimpViewable *viewable,
gint preview_size)
{
GimpListItem *list_item;
g_return_val_if_fail (viewable != NULL, NULL);
g_return_val_if_fail (GIMP_IS_VIEWABLE (viewable), NULL);
g_return_val_if_fail (preview_size > 0 && preview_size <= 256, NULL);
if (GIMP_IS_LAYER (viewable))
{
list_item = gtk_type_new (GIMP_TYPE_LAYER_LIST_ITEM);
}
else if (GIMP_IS_CHANNEL (viewable))
{
list_item = gtk_type_new (GIMP_TYPE_CHANNEL_LIST_ITEM);
}
else if (GIMP_IS_DRAWABLE (viewable))
{
list_item = gtk_type_new (GIMP_TYPE_DRAWABLE_LIST_ITEM);
}
else
{
list_item = gtk_type_new (GIMP_TYPE_LIST_ITEM);
}
list_item->preview_size = preview_size;
gimp_list_item_set_viewable (list_item, viewable);
return GTK_WIDGET (list_item);
}
void
gimp_list_item_set_viewable (GimpListItem *list_item,
GimpViewable *viewable)
{
g_return_if_fail (list_item != NULL);
g_return_if_fail (GIMP_IS_LIST_ITEM (list_item));
g_signal_emit (G_OBJECT (list_item), list_item_signals[SET_VIEWABLE], 0,
viewable);
}
static void
gimp_list_item_real_set_viewable (GimpListItem *list_item,
GimpViewable *viewable)
{
list_item->preview = gimp_preview_new (viewable, list_item->preview_size,
1, FALSE);
gtk_box_pack_start (GTK_BOX (list_item->hbox), list_item->preview,
FALSE, FALSE, 0);
gtk_widget_show (list_item->preview);
list_item->name_label = gtk_label_new (NULL);
gtk_box_pack_start (GTK_BOX (list_item->hbox), list_item->name_label,
FALSE, FALSE, 0);
gtk_widget_show (list_item->name_label);
gimp_list_item_name_changed (viewable, list_item);
g_signal_connect_object (G_OBJECT (viewable), "name_changed",
G_CALLBACK (gimp_list_item_name_changed),
list_item, 0);
gimp_gtk_drag_source_set_by_type (GTK_WIDGET (list_item),
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
G_TYPE_FROM_INSTANCE (viewable),
GDK_ACTION_MOVE | GDK_ACTION_COPY);
gimp_dnd_viewable_source_set (GTK_WIDGET (list_item),
G_TYPE_FROM_INSTANCE (viewable),
gimp_list_item_drag_viewable,
NULL);
}
void
gimp_list_item_set_preview_size (GimpListItem *list_item,
gint preview_size)
{
g_return_if_fail (list_item != NULL);
g_return_if_fail (GIMP_IS_LIST_ITEM (list_item));
g_return_if_fail (preview_size > 0 && preview_size <= 256 /* FIXME: 64 */);
list_item->preview_size = preview_size;
g_signal_emit (G_OBJECT (list_item), list_item_signals[SET_PREVIEW_SIZE], 0);
}
static void
gimp_list_item_real_set_preview_size (GimpListItem *list_item)
{
GimpPreview *preview;
preview = GIMP_PREVIEW (list_item->preview);
gimp_preview_set_size (preview,
list_item->preview_size, preview->border_width);
}
void
gimp_list_item_set_reorderable (GimpListItem *list_item,
gboolean reorderable,
GimpContainer *container)
{
g_return_if_fail (list_item != NULL);
g_return_if_fail (GIMP_IS_LIST_ITEM (list_item));
g_return_if_fail (! reorderable || container != NULL);
g_return_if_fail (! container || GIMP_IS_CONTAINER (container));
list_item->reorderable = reorderable;
if (reorderable)
{
list_item->container = container;
gimp_gtk_drag_dest_set_by_type (GTK_WIDGET (list_item),
GTK_DEST_DEFAULT_ALL,
container->children_type,
GDK_ACTION_MOVE | GDK_ACTION_COPY);
}
else
{
list_item->container = NULL;
gtk_drag_dest_unset (GTK_WIDGET (list_item));
}
}
void
gimp_list_item_set_name_func (GimpListItem *list_item,
GimpItemGetNameFunc get_name_func)
{
g_return_if_fail (list_item != NULL);
g_return_if_fail (GIMP_IS_LIST_ITEM (list_item));
if (list_item->get_name_func != get_name_func)
{
GimpViewable *viewable;
list_item->get_name_func = get_name_func;
viewable = GIMP_PREVIEW (list_item->preview)->viewable;
if (viewable)
gimp_list_item_name_changed (viewable, list_item);
}
}
gboolean
gimp_list_item_check_drag (GimpListItem *list_item,
GdkDragContext *context,
gint x,
gint y,
GimpViewable **src_viewable,
gint *dest_index,
GdkDragAction *drag_action,
GimpDropType *drop_type)
{
GtkWidget *src_widget;
GimpViewable *my_src_viewable = NULL;
GimpViewable *my_dest_viewable = NULL;
gint my_src_index = -1;
gint my_dest_index = -1;
GdkDragAction my_drag_action = GDK_ACTION_DEFAULT;
GimpDropType my_drop_type = GIMP_DROP_NONE;
gboolean return_val = FALSE;
if (list_item->reorderable &&
list_item->container &&
(src_widget = gtk_drag_get_source_widget (context)) &&
src_widget != GTK_WIDGET (list_item))
{
my_src_viewable = gimp_dnd_get_drag_data (src_widget);
my_dest_viewable = GIMP_PREVIEW (list_item->preview)->viewable;
if (my_src_viewable && my_dest_viewable)
{
my_src_index =
gimp_container_get_child_index (list_item->container,
GIMP_OBJECT (my_src_viewable));
my_dest_index =
gimp_container_get_child_index (list_item->container,
GIMP_OBJECT (my_dest_viewable));
if (my_src_viewable && my_src_index != -1 &&
my_dest_viewable && my_dest_index != -1)
{
gint difference;
difference = my_dest_index - my_src_index;
if (y < GTK_WIDGET (list_item)->allocation.height / 2)
my_drop_type = GIMP_DROP_ABOVE;
else
my_drop_type = GIMP_DROP_BELOW;
if (difference < 0 && my_drop_type == GIMP_DROP_BELOW)
{
my_dest_index++;
}
else if (difference > 0 && my_drop_type == GIMP_DROP_ABOVE)
{
my_dest_index--;
}
if (my_src_index != my_dest_index)
{
my_drag_action = GDK_ACTION_MOVE;
return_val = TRUE;
}
else
{
my_drop_type = GIMP_DROP_NONE;
}
}
}
}
*src_viewable = my_src_viewable;
*dest_index = my_dest_index;
*drag_action = my_drag_action;
*drop_type = my_drop_type;
return return_val;
}
void
gimp_list_item_button_realize (GtkWidget *widget,
gpointer data)
{
gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
}
void
gimp_list_item_button_state_changed (GtkWidget *widget,
GtkStateType previous_state,
gpointer data)
{
GtkWidget *list_item;
list_item = GTK_WIDGET (data);
if (widget->state != list_item->state)
{
switch (widget->state)
{
case GTK_STATE_NORMAL:
case GTK_STATE_ACTIVE:
/* beware: recursion */
gtk_widget_set_state (widget, list_item->state);
break;
default:
break;
}
}
else if (list_item->state == GTK_STATE_INSENSITIVE)
{
/* Don't look here, no, please...
*
* I said NO ...
*/
if (GTK_WIDGET_DRAWABLE (list_item))
{
GdkEventExpose event;
event.type = GDK_EXPOSE;
event.send_event = TRUE;
event.window = list_item->window;
event.area.x = widget->allocation.x;
event.area.y = widget->allocation.y;
event.area.width = widget->allocation.width;
event.area.height = widget->allocation.height;
event.count = 0;
gdk_window_ref (event.window);
gtk_widget_event (list_item, (GdkEvent*) &event);
gdk_window_unref (event.window);
}
}
}
static void
gimp_list_item_name_changed (GimpViewable *viewable,
GimpListItem *list_item)
{
if (list_item->get_name_func)
{
gchar *name;
name = list_item->get_name_func (GTK_WIDGET (list_item));
gtk_label_set_text (GTK_LABEL (list_item->name_label), name);
g_free (name);
}
else
{
gtk_label_set_text (GTK_LABEL (list_item->name_label),
gimp_object_get_name (GIMP_OBJECT (viewable)));
}
}
static GimpViewable *
gimp_list_item_drag_viewable (GtkWidget *widget,
gpointer data)
{
return GIMP_PREVIEW (GIMP_LIST_ITEM (widget)->preview)->viewable;
}
Reference in New Issue View Git Blame Copy Permalink