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gimp/app/widgets/gimpcomponentlistitem.c
Michael Natterer 48bf4fb7b2 don't scale the preview up if the buffer is too small. 
2003-03-01  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpbuffer.c: don't scale the preview up if the
	buffer is too small.

	* app/core/gimppattern.c: don't add a white border around the
	preview if the pattern is too small.

	* app/widgets/gimppreviewrenderer.[ch]: new object. A buffer
	that updates itself on GimpViewable changes and can render
	itself to any widget. Basically GimpPreview reduced to the
	render and draw code.

	* app/widgets/gimppreview.[ch]: removed all rendering and drawing
	code and keep a GimpPreviewRenderer instance. Connect to its
	"update" signal for queuing draws on the preview.

	* app/widgets/gimpcellrendererviewable.[ch]
	* app/widgets/gimpcontainertreeview.c: same here: removed
	rendering and drawing code and keep GimpPreviewRenderers in the
	list store.  Delays preview creation for GtkTreeViews until the
	buffer is really needed for drawing and adds idle preview updating
	on viewable changes.

	* app/widgets/gimppreview-utils.[ch]
	* app/widgets/gimpbrushpreview.[ch]
	* app/widgets/gimpbufferpreview.[ch]
	* app/widgets/gimpdrawablepreview.[ch]
	* app/widgets/gimpimagepreview.[ch]: removed...

	* app/widgets/gimppreviewrenderer-utils.[ch]
	* app/widgets/gimppreviewrendererbrush.[ch]
	* app/widgets/gimppreviewrendererdrawable.[ch]
	* app/widgets/gimppreviewrendererimage.[ch]: ...and converted to
	GimpPreviewRenderer subclasses.

	* app/display/gimpnavigationview.c
	* app/gui/palette-import-dialog.c
	* app/widgets/Makefile.am
	* app/widgets/widgets-enums.h
	* app/widgets/widgets-types.h
	* app/widgets/gimpchannellistview.c
	* app/widgets/gimpcomponentlistitem.c
	* app/widgets/gimpcontainergridview.c
	* app/widgets/gimpcontainermenuimpl.c
	* app/widgets/gimplayerlistitem.c
	* app/widgets/gimplistitem.c
	* app/widgets/gimpnavigationpreview.[ch]
	* app/widgets/gimpselectioneditor.c
	* app/widgets/gimpvectorslistview.c: changed accordingly.
2003-03-01 03:53:41 +00:00

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcomponentlistitem.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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 "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "core/gimpimage.h"
#include "core/gimpviewable.h"
#include "gimpcomponentlistitem.h"
#include "gimpdnd.h"
#include "gimppreview.h"
#include "gimppreviewrendererimage.h"
#include "libgimp/gimpintl.h"
static void gimp_component_list_item_class_init (GimpComponentListItemClass *klass);
static void gimp_component_list_item_init (GimpComponentListItem *list_item);
static void gimp_component_list_item_set_viewable (GimpListItem *list_item,
GimpViewable *viewable);
static void gimp_component_list_item_eye_toggled (GtkWidget *widget,
gpointer data);
static void gimp_component_list_item_toggled (GtkWidget *widget,
gpointer data);
static gboolean gimp_component_list_item_button_press (GtkWidget *widget,
GdkEventButton *bevent);
static gboolean gimp_component_list_item_button_release (GtkWidget *widget,
GdkEventButton *bevent);
static void gimp_component_list_item_visibility_changed
(GimpImage *gimage,
GimpChannelType channel,
gpointer data);
static void gimp_component_list_item_active_changed
(GimpImage *gimage,
GimpChannelType channel,
gpointer data);
static gchar * gimp_component_list_item_get_name (GObject *object,
gchar **tooltip);
static GimpListItemClass *parent_class = NULL;
GType
gimp_component_list_item_get_type (void)
{
static GType list_item_type = 0;
if (! list_item_type)
{
static const GTypeInfo list_item_info =
{
sizeof (GimpComponentListItemClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gimp_component_list_item_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpComponentListItem),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_component_list_item_init,
};
list_item_type = g_type_register_static (GIMP_TYPE_LIST_ITEM,
"GimpComponentListItem",
&list_item_info, 0);
}
return list_item_type;
}
static void
gimp_component_list_item_class_init (GimpComponentListItemClass *klass)
{
GtkWidgetClass *widget_class;
GimpListItemClass *list_item_class;
widget_class = GTK_WIDGET_CLASS (klass);
list_item_class = GIMP_LIST_ITEM_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
widget_class->button_press_event = gimp_component_list_item_button_press;
widget_class->button_release_event = gimp_component_list_item_button_release;
list_item_class->set_viewable = gimp_component_list_item_set_viewable;
}
static void
gimp_component_list_item_init (GimpComponentListItem *list_item)
{
GtkWidget *abox;
GtkWidget *image;
/* FIXME: disable keyboard navigation because as of gtk+-2.0.3,
* GtkList kb navogation with is h-o-r-r-i-b-l-y broken with
* GTK_SELECTION_MULTIPLE --mitch 05/27/2002
*/
GTK_WIDGET_UNSET_FLAGS (list_item, GTK_CAN_FOCUS);
list_item->channel = 0;
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (GIMP_LIST_ITEM (list_item)->hbox), abox,
FALSE, FALSE, 0);
gtk_widget_show (abox);
list_item->eye_button = gtk_toggle_button_new ();
gtk_button_set_relief (GTK_BUTTON (list_item->eye_button), GTK_RELIEF_NONE);
gtk_container_add (GTK_CONTAINER (abox), list_item->eye_button);
gtk_widget_show (list_item->eye_button);
g_signal_connect (list_item->eye_button, "realize",
G_CALLBACK (gimp_list_item_button_realize),
list_item);
g_signal_connect (list_item->eye_button, "state_changed",
G_CALLBACK (gimp_list_item_button_state_changed),
list_item);
image = gtk_image_new_from_stock (GIMP_STOCK_VISIBLE,
GTK_ICON_SIZE_BUTTON);
gtk_container_add (GTK_CONTAINER (list_item->eye_button), image);
gtk_widget_show (image);
g_signal_connect_after (list_item, "select",
G_CALLBACK (gimp_component_list_item_toggled),
NULL);
g_signal_connect_after (list_item, "deselect",
G_CALLBACK (gimp_component_list_item_toggled),
NULL);
g_signal_connect_after (list_item, "toggle",
G_CALLBACK (gimp_component_list_item_toggled),
NULL);
}
GtkWidget *
gimp_component_list_item_new (GimpImage *gimage,
gint preview_size,
GimpChannelType channel)
{
GimpListItem *list_item;
g_return_val_if_fail (GIMP_IS_IMAGE (gimage), NULL);
g_return_val_if_fail (preview_size > 0 &&
preview_size <= GIMP_PREVIEW_MAX_SIZE, NULL);
list_item = g_object_new (GIMP_TYPE_COMPONENT_LIST_ITEM, NULL);
list_item->preview_size = preview_size;
list_item->get_name_func = gimp_component_list_item_get_name;
GIMP_COMPONENT_LIST_ITEM (list_item)->channel = channel;
gimp_list_item_set_viewable (list_item, GIMP_VIEWABLE (gimage));
return GTK_WIDGET (list_item);
}
static void
gimp_component_list_item_set_viewable (GimpListItem *list_item,
GimpViewable *viewable)
{
GimpComponentListItem *component_item;
GimpImage *gimage;
gboolean visible;
gboolean active;
gint pixel;
component_item = GIMP_COMPONENT_LIST_ITEM (list_item);
if (GIMP_LIST_ITEM_CLASS (parent_class)->set_viewable)
GIMP_LIST_ITEM_CLASS (parent_class)->set_viewable (list_item, viewable);
gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
visible = gimp_image_get_component_visible (gimage, component_item->channel);
active = gimp_image_get_component_active (gimage, component_item->channel);
switch (component_item->channel)
{
case GIMP_RED_CHANNEL: pixel = RED_PIX; break;
case GIMP_GREEN_CHANNEL: pixel = GREEN_PIX; break;
case GIMP_BLUE_CHANNEL: pixel = BLUE_PIX; break;
case GIMP_GRAY_CHANNEL: pixel = GRAY_PIX; break;
case GIMP_INDEXED_CHANNEL: pixel = INDEXED_PIX; break;
case GIMP_ALPHA_CHANNEL: pixel = ALPHA_PIX; break;
default:
pixel = 0;
g_assert_not_reached ();
}
GIMP_PREVIEW_RENDERER_IMAGE (GIMP_PREVIEW (list_item->preview)->renderer)->channel = pixel;
if (! visible)
{
GtkRequisition requisition;
gtk_widget_size_request (component_item->eye_button, &requisition);
gtk_widget_set_size_request (component_item->eye_button,
requisition.width,
requisition.height);
gtk_widget_hide (GTK_BIN (component_item->eye_button)->child);
}
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (component_item->eye_button),
visible);
if (active)
gtk_item_select (GTK_ITEM (list_item));
g_signal_connect (component_item->eye_button, "toggled",
G_CALLBACK (gimp_component_list_item_eye_toggled),
list_item);
g_signal_connect_object (gimage, "component_visibility_changed",
G_CALLBACK (gimp_component_list_item_visibility_changed),
list_item,
0);
g_signal_connect_object (gimage, "component_active_changed",
G_CALLBACK (gimp_component_list_item_active_changed),
list_item,
0);
}
static void
gimp_component_list_item_eye_toggled (GtkWidget *widget,
gpointer data)
{
GimpComponentListItem *component_item;
GimpListItem *list_item;
GimpImage *gimage;
gboolean visible;
component_item = GIMP_COMPONENT_LIST_ITEM (data);
list_item = GIMP_LIST_ITEM (data);
gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
visible = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget));
if (visible != gimp_image_get_component_visible (gimage,
component_item->channel))
{
if (! visible)
{
gtk_widget_set_size_request (GTK_WIDGET (widget),
GTK_WIDGET (widget)->allocation.width,
GTK_WIDGET (widget)->allocation.height);
gtk_widget_hide (GTK_BIN (widget)->child);
}
else
{
gtk_widget_show (GTK_BIN (widget)->child);
gtk_widget_set_size_request (GTK_WIDGET (widget), -1, -1);
}
g_signal_handlers_block_by_func (gimage,
gimp_component_list_item_visibility_changed,
list_item);
gimp_image_set_component_visible (gimage, component_item->channel,
visible);
g_signal_handlers_unblock_by_func (gimage,
gimp_component_list_item_visibility_changed,
list_item);
gimp_image_flush (gimage);
}
}
static gboolean
gimp_component_list_item_button_press (GtkWidget *widget,
GdkEventButton *bevent)
{
GimpComponentListItem *component_item;
GimpListItem *list_item;
GimpImage *gimage;
component_item = GIMP_COMPONENT_LIST_ITEM (widget);
list_item = GIMP_LIST_ITEM (widget);
gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
if (bevent->button == 1 && bevent->type == GDK_BUTTON_PRESS)
{
gtk_grab_add (widget);
return TRUE;
}
return FALSE;
}
static gboolean
gimp_component_list_item_button_release (GtkWidget *widget,
GdkEventButton *bevent)
{
GimpComponentListItem *component_item;
GimpListItem *list_item;
GimpImage *gimage;
gboolean active;
component_item = GIMP_COMPONENT_LIST_ITEM (widget);
list_item = GIMP_LIST_ITEM (widget);
gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
active = (widget->state == GTK_STATE_SELECTED);
if (bevent->button == 1 && GTK_WIDGET_HAS_GRAB (widget))
{
GtkWidget *event_widget;
gtk_grab_remove (widget);
event_widget = gtk_get_event_widget ((GdkEvent *) bevent);
/* eek */
if (event_widget &&
event_widget->parent &&
(widget == event_widget ||
widget == event_widget->parent ||
widget == event_widget->parent->parent))
{
gimp_image_set_component_active (gimage,
component_item->channel,
! active);
}
return TRUE;
}
return FALSE;
}
static void
gimp_component_list_item_toggled (GtkWidget *widget,
gpointer data)
{
GimpComponentListItem *component_item;
GimpListItem *list_item;
GimpImage *gimage;
gboolean active;
gboolean component_active;
component_item = GIMP_COMPONENT_LIST_ITEM (widget);
list_item = GIMP_LIST_ITEM (widget);
gimage = GIMP_IMAGE (GIMP_PREVIEW (list_item->preview)->viewable);
active = (widget->state == GTK_STATE_SELECTED);
component_active = gimp_image_get_component_active (gimage,
component_item->channel);
if (active != component_active)
{
if (component_active)
gtk_item_select (GTK_ITEM (list_item));
else
gtk_item_deselect (GTK_ITEM (list_item));
}
}
static void
gimp_component_list_item_visibility_changed (GimpImage *gimage,
GimpChannelType channel,
gpointer data)
{
GimpComponentListItem *component_item;
GimpListItem *list_item;
GtkToggleButton *toggle;
gboolean visible;
component_item = GIMP_COMPONENT_LIST_ITEM (data);
if (channel != component_item->channel)
return;
list_item = GIMP_LIST_ITEM (data);
toggle = GTK_TOGGLE_BUTTON (component_item->eye_button);
visible = gimp_image_get_component_visible (gimage,
component_item->channel);
if (visible != toggle->active)
{
if (! visible)
{
gtk_widget_set_size_request (GTK_WIDGET (toggle),
GTK_WIDGET (toggle)->allocation.width,
GTK_WIDGET (toggle)->allocation.height);
gtk_widget_hide (GTK_BIN (toggle)->child);
}
else
{
gtk_widget_show (GTK_BIN (toggle)->child);
gtk_widget_set_size_request (GTK_WIDGET (toggle), -1, -1);
}
g_signal_handlers_block_by_func (toggle,
gimp_component_list_item_eye_toggled,
list_item);
gtk_toggle_button_set_active (toggle, visible);
g_signal_handlers_unblock_by_func (toggle,
gimp_component_list_item_eye_toggled,
list_item);
}
}
static void
gimp_component_list_item_active_changed (GimpImage *gimage,
GimpChannelType channel,
gpointer data)
{
GimpComponentListItem *component_item;
gboolean active;
gboolean component_active;
component_item = GIMP_COMPONENT_LIST_ITEM (data);
if (channel != component_item->channel)
return;
active = (GTK_WIDGET (data)->state == GTK_STATE_SELECTED);
component_active = gimp_image_get_component_active (gimage,
component_item->channel);
if (active != component_active)
{
if (component_active)
gtk_item_select (GTK_ITEM (data));
else
gtk_item_deselect (GTK_ITEM (data));
}
}
static gchar *
gimp_component_list_item_get_name (GObject *object,
gchar **tooltip)
{
GimpComponentListItem *component_item;
component_item = GIMP_COMPONENT_LIST_ITEM (object);
if (tooltip)
*tooltip = NULL;
switch (component_item->channel)
{
case GIMP_RED_CHANNEL: return g_strdup (_("Red")); break;
case GIMP_GREEN_CHANNEL: return g_strdup (_("Green")); break;
case GIMP_BLUE_CHANNEL: return g_strdup (_("Blue")); break;
case GIMP_GRAY_CHANNEL: return g_strdup (_("Gray")); break;
case GIMP_INDEXED_CHANNEL: return g_strdup (_("Indexed")); break;
case GIMP_ALPHA_CHANNEL: return g_strdup (_("Alpha")); break;
default:
return g_strdup ("EEEEK");
}
}
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