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gimp/app/channels_dialog.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <stdio.h>
#include <stdlib.h>
#include "gdk/gdkkeysyms.h"
#include "appenv.h"
#include "actionarea.h"
#include "buildmenu.h"
#include "channels_dialog.h"
#include "colormaps.h"
#include "color_panel.h"
#include "drawable.h"
#include "errors.h"
#include "gdisplay.h"
#include "gimage.h"
#include "gimage_mask.h"
#include "gimprc.h"
#include "general.h"
#include "interface.h"
#include "layers_dialogP.h"
#include "ops_buttons.h"
#include "paint_funcs.h"
#include "palette.h"
#include "resize.h"
#include "tools/eye.xbm"
#include "tools/channel.xbm"
#include "tools/new.xpm"
#include "tools/new_is.xpm"
#include "tools/raise.xpm"
#include "tools/raise_is.xpm"
#include "tools/lower.xpm"
#include "tools/lower_is.xpm"
#include "tools/duplicate.xpm"
#include "tools/duplicate_is.xpm"
#include "tools/delete.xpm"
#include "tools/delete_is.xpm"
#include "channel_pvt.h"
#define PREVIEW_EVENT_MASK GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_ENTER_NOTIFY_MASK
#define BUTTON_EVENT_MASK GDK_EXPOSURE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | \
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
#define CHANNEL_LIST_WIDTH 200
#define CHANNEL_LIST_HEIGHT 150
#define NORMAL 0
#define SELECTED 1
#define INSENSITIVE 2
#define COMPONENT_BASE_ID 0x10000000
typedef struct _ChannelWidget ChannelWidget;
struct _ChannelWidget {
GtkWidget *eye_widget;
GtkWidget *clip_widget;
GtkWidget *channel_preview;
GtkWidget *list_item;
GtkWidget *label;
GImage *gimage;
Channel *channel;
GdkPixmap *channel_pixmap;
ChannelType type;
int ID;
int width, height;
int visited;
};
typedef struct _ChannelsDialog ChannelsDialog;
struct _ChannelsDialog {
GtkWidget *vbox;
GtkWidget *channel_list;
GtkWidget *preview;
GtkWidget *ops_menu;
GtkAcceleratorTable *accel_table;
int num_components;
int base_type;
ChannelType components[3];
double ratio;
int image_width, image_height;
int gimage_width, gimage_height;
/* state information */
int gimage_id;
Channel * active_channel;
Layer *floating_sel;
GSList *channel_widgets;
};
/* channels dialog widget routines */
static void channels_dialog_preview_extents (void);
static void channels_dialog_set_menu_sensitivity (void);
static void channels_dialog_set_channel (ChannelWidget *);
static void channels_dialog_unset_channel (ChannelWidget *);
static void channels_dialog_position_channel (ChannelWidget *, int);
static void channels_dialog_add_channel (Channel *);
static void channels_dialog_remove_channel (ChannelWidget *);
static gint channel_list_events (GtkWidget *, GdkEvent *);
/* channels dialog menu callbacks */
static void channels_dialog_map_callback (GtkWidget *, gpointer);
static void channels_dialog_unmap_callback (GtkWidget *, gpointer);
static void channels_dialog_new_channel_callback (GtkWidget *, gpointer);
static void channels_dialog_raise_channel_callback (GtkWidget *, gpointer);
static void channels_dialog_lower_channel_callback (GtkWidget *, gpointer);
static void channels_dialog_duplicate_channel_callback (GtkWidget *, gpointer);
static void channels_dialog_delete_channel_callback (GtkWidget *, gpointer);
static void channels_dialog_channel_to_sel_callback (GtkWidget *, gpointer);
/* channel widget function prototypes */
static ChannelWidget *channel_widget_get_ID (Channel *);
static ChannelWidget *create_channel_widget (GImage *, Channel *, ChannelType);
static void channel_widget_delete (ChannelWidget *);
static void channel_widget_select_update (GtkWidget *, gpointer);
static gint channel_widget_button_events (GtkWidget *, GdkEvent *);
static gint channel_widget_preview_events (GtkWidget *, GdkEvent *);
static void channel_widget_preview_redraw (ChannelWidget *);
static void channel_widget_no_preview_redraw (ChannelWidget *);
static void channel_widget_eye_redraw (ChannelWidget *);
static void channel_widget_exclusive_visible (ChannelWidget *);
static void channel_widget_channel_flush (GtkWidget *, gpointer);
/* assorted query dialogs */
static void channels_dialog_new_channel_query (int);
static void channels_dialog_edit_channel_query (ChannelWidget *);
/* Only one channels dialog */
static ChannelsDialog *channelsD = NULL;
static GdkPixmap *eye_pixmap[3] = { NULL, NULL, NULL };
static GdkPixmap *channel_pixmap[3] = { NULL, NULL, NULL };
static int suspend_gimage_notify = 0;
static guint32 button_click_time = 0;
static int button_last_id = 0;
static MenuItem channels_ops[] =
{
{ "New Channel", 'N', GDK_CONTROL_MASK,
channels_dialog_new_channel_callback, NULL, NULL, NULL },
{ "Raise Channel", 'F', GDK_CONTROL_MASK,
channels_dialog_raise_channel_callback, NULL, NULL, NULL },
{ "Lower Channel", 'B', GDK_CONTROL_MASK,
channels_dialog_lower_channel_callback, NULL, NULL, NULL },
{ "Duplicate Channel", 'C', GDK_CONTROL_MASK,
channels_dialog_duplicate_channel_callback, NULL, NULL, NULL },
{ "Delete Channel", 'X', GDK_CONTROL_MASK,
channels_dialog_delete_channel_callback, NULL, NULL, NULL },
{ "Channel To Selection", 'S', GDK_CONTROL_MASK,
channels_dialog_channel_to_sel_callback, NULL, NULL, NULL },
{ NULL, 0, 0, NULL, NULL, NULL, NULL },
};
/* the ops buttons */
static OpsButton channels_ops_buttons[] =
{
{ new_xpm, new_is_xpm, channels_dialog_new_channel_callback, "New Channel", NULL, NULL, NULL, NULL, NULL, NULL },
{ raise_xpm, raise_is_xpm, channels_dialog_raise_channel_callback, "Raise Channel", NULL, NULL, NULL, NULL, NULL, NULL },
{ lower_xpm, lower_is_xpm, channels_dialog_lower_channel_callback, "Lower Channel", NULL, NULL, NULL, NULL, NULL, NULL },
{ duplicate_xpm, duplicate_is_xpm, channels_dialog_duplicate_channel_callback, "Duplicate Channel", NULL, NULL, NULL, NULL, NULL, NULL },
{ delete_xpm, delete_is_xpm, channels_dialog_delete_channel_callback, "Delete Channel", NULL, NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}
};
/**************************************/
/* Public channels dialog functions */
/**************************************/
GtkWidget *
channels_dialog_create ()
{
GtkWidget *vbox;
GtkWidget *listbox;
GtkWidget *button_box;
if (!channelsD)
{
channelsD = g_malloc (sizeof (ChannelsDialog));
channelsD->preview = NULL;
channelsD->gimage_id = -1;
channelsD->active_channel = NULL;
channelsD->floating_sel = NULL;
channelsD->channel_widgets = NULL;
channelsD->accel_table = gtk_accelerator_table_new ();
if (preview_size)
{
channelsD->preview = gtk_preview_new (GTK_PREVIEW_GRAYSCALE);
gtk_preview_size (GTK_PREVIEW (channelsD->preview), preview_size, preview_size);
}
/* The main vbox */
channelsD->vbox = vbox = gtk_vbox_new (FALSE, 1);
gtk_container_border_width (GTK_CONTAINER (vbox), 2);
/* The layers commands pulldown menu */
channelsD->ops_menu = build_menu (channels_ops, channelsD->accel_table);
/* The channels listbox */
listbox = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_usize (listbox, CHANNEL_LIST_WIDTH, CHANNEL_LIST_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox), listbox, TRUE, TRUE, 2);
channelsD->channel_list = gtk_list_new ();
gtk_container_add (GTK_CONTAINER (listbox), channelsD->channel_list);
gtk_list_set_selection_mode (GTK_LIST (channelsD->channel_list), GTK_SELECTION_MULTIPLE);
gtk_signal_connect (GTK_OBJECT (channelsD->channel_list), "event",
(GtkSignalFunc) channel_list_events,
channelsD);
gtk_container_set_focus_vadjustment (GTK_CONTAINER (channelsD->channel_list),
gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (listbox)));
GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (listbox)->vscrollbar, GTK_CAN_FOCUS);
gtk_widget_show (channelsD->channel_list);
gtk_widget_show (listbox);
/* The ops buttons */
button_box = ops_button_box_new (lc_shell, tool_tips, channels_ops_buttons);
gtk_box_pack_start (GTK_BOX (vbox), button_box, FALSE, FALSE, 2);
gtk_widget_show (button_box);
/* Set up signals for map/unmap for the accelerators */
gtk_signal_connect (GTK_OBJECT (channelsD->vbox), "map",
(GtkSignalFunc) channels_dialog_map_callback,
NULL);
gtk_signal_connect (GTK_OBJECT (channelsD->vbox), "unmap",
(GtkSignalFunc) channels_dialog_unmap_callback,
NULL);
gtk_widget_show (vbox);
}
return channelsD->vbox;
}
void
channels_dialog_flush ()
{
GImage *gimage;
Channel *channel;
ChannelWidget *cw;
GSList *list;
int gimage_pos;
int pos;
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
/* Check if the gimage extents have changed */
if ((gimage->width != channelsD->gimage_width) ||
(gimage->height != channelsD->gimage_height) ||
(gimage_base_type (gimage) != channelsD->base_type))
{
channelsD->gimage_id = -1;
channels_dialog_update (gimage->ID);
}
/* Set all current channel widgets to visited = FALSE */
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
cw->visited = FALSE;
list = g_slist_next (list);
}
/* Add any missing channels */
list = gimage->channels;
while (list)
{
channel = (Channel *) list->data;
cw = channel_widget_get_ID (channel);
/* If the channel isn't in the channel widget list, add it */
if (cw == NULL)
channels_dialog_add_channel (channel);
else
cw->visited = TRUE;
list = g_slist_next (list);
}
/* Remove any extraneous auxillary channels */
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
list = g_slist_next (list);
if (cw->visited == FALSE && cw->type == Auxillary)
/* will only be true for auxillary channels */
channels_dialog_remove_channel (cw);
}
/* Switch positions of items if necessary */
list = channelsD->channel_widgets;
pos = -channelsD->num_components + 1;
while (list)
{
cw = (ChannelWidget *) list->data;
list = g_slist_next (list);
if (cw->type == Auxillary)
if ((gimage_pos = gimage_get_channel_index (gimage, cw->channel)) != pos)
channels_dialog_position_channel (cw, gimage_pos);
pos++;
}
/* Set the active channel */
if (channelsD->active_channel != gimage->active_channel)
channelsD->active_channel = gimage->active_channel;
/* set the menus if floating sel status has changed */
if (channelsD->floating_sel != gimage->floating_sel)
channelsD->floating_sel = gimage->floating_sel;
channels_dialog_set_menu_sensitivity ();
gtk_container_foreach (GTK_CONTAINER (channelsD->channel_list),
channel_widget_channel_flush, NULL);
}
/*************************************/
/* channels dialog widget routines */
/*************************************/
void
channels_dialog_update (int gimage_id)
{
ChannelWidget *cw;
GImage *gimage;
Channel *channel;
GSList *list;
GList *item_list;
if (!channelsD)
return;
if (channelsD->gimage_id == gimage_id)
return;
channelsD->gimage_id = gimage_id;
suspend_gimage_notify++;
/* Free all elements in the channels listbox */
gtk_list_clear_items (GTK_LIST (channelsD->channel_list), 0, -1);
suspend_gimage_notify--;
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
list = g_slist_next (list);
channel_widget_delete (cw);
}
channelsD->channel_widgets = NULL;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
/* Find the preview extents */
channels_dialog_preview_extents ();
channelsD->active_channel = NULL;
channelsD->floating_sel = NULL;
/* The image components */
item_list = NULL;
switch ((channelsD->base_type = gimage_base_type (gimage)))
{
case RGB:
cw = create_channel_widget (gimage, NULL, Red);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = Red;
cw = create_channel_widget (gimage, NULL, Green);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[1] = Green;
cw = create_channel_widget (gimage, NULL, Blue);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[2] = Blue;
channelsD->num_components = 3;
break;
case GRAY:
cw = create_channel_widget (gimage, NULL, Gray);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = Gray;
channelsD->num_components = 1;
break;
case INDEXED:
cw = create_channel_widget (gimage, NULL, Indexed);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = Indexed;
channelsD->num_components = 1;
break;
}
/* The auxillary image channels */
list = gimage->channels;
while (list)
{
/* create a channel list item */
channel = (Channel *) list->data;
cw = create_channel_widget (gimage, channel, Auxillary);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
list = g_slist_next (list);
}
/* get the index of the active channel */
if (item_list)
gtk_list_insert_items (GTK_LIST (channelsD->channel_list), item_list, 0);
}
void
channels_dialog_clear ()
{
ops_button_box_set_insensitive (channels_ops_buttons);
suspend_gimage_notify++;
gtk_list_clear_items (GTK_LIST (channelsD->channel_list), 0, -1);
suspend_gimage_notify--;
}
void
channels_dialog_free ()
{
GSList *list;
ChannelWidget *cw;
if (channelsD == NULL)
return;
suspend_gimage_notify++;
/* Free all elements in the channels listbox */
gtk_list_clear_items (GTK_LIST (channelsD->channel_list), 0, -1);
suspend_gimage_notify--;
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
list = g_slist_next (list);
channel_widget_delete (cw);
}
channelsD->channel_widgets = NULL;
channelsD->active_channel = NULL;
channelsD->floating_sel = NULL;
if (channelsD->preview)
gtk_object_sink (GTK_OBJECT (channelsD->preview));
if (channelsD->ops_menu)
gtk_object_sink (GTK_OBJECT (channelsD->ops_menu));
g_free (channelsD);
channelsD = NULL;
}
static void
channels_dialog_preview_extents ()
{
GImage *gimage;
if (! channelsD)
return;
gimage = gimage_get_ID (channelsD->gimage_id);
channelsD->gimage_width = gimage->width;
channelsD->gimage_height = gimage->height;
/* Get the image width and height variables, based on the gimage */
if (gimage->width > gimage->height)
channelsD->ratio = (double) preview_size / (double) gimage->width;
else
channelsD->ratio = (double) preview_size / (double) gimage->height;
if (preview_size)
{
channelsD->image_width = (int) (channelsD->ratio * gimage->width);
channelsD->image_height = (int) (channelsD->ratio * gimage->height);
if (channelsD->image_width < 1) channelsD->image_width = 1;
if (channelsD->image_height < 1) channelsD->image_height = 1;
}
else
{
channelsD->image_width = channel_width;
channelsD->image_height = channel_height;
}
}
static void
channels_dialog_set_menu_sensitivity ()
{
ChannelWidget *cw;
gint fs_sensitive;
gint aux_sensitive;
cw = channel_widget_get_ID (channelsD->active_channel);
fs_sensitive = (channelsD->floating_sel != NULL);
if (cw)
aux_sensitive = (cw->type == Auxillary);
else
aux_sensitive = FALSE;
/* new channel */
gtk_widget_set_sensitive (channels_ops[0].widget, !fs_sensitive);
ops_button_set_sensitive (channels_ops_buttons[0], !fs_sensitive);
/* raise channel */
gtk_widget_set_sensitive (channels_ops[1].widget, !fs_sensitive && aux_sensitive);
ops_button_set_sensitive (channels_ops_buttons[1], !fs_sensitive && aux_sensitive);
/* lower channel */
gtk_widget_set_sensitive (channels_ops[2].widget, !fs_sensitive && aux_sensitive);
ops_button_set_sensitive (channels_ops_buttons[2], !fs_sensitive && aux_sensitive);
/* duplicate channel */
gtk_widget_set_sensitive (channels_ops[3].widget, !fs_sensitive && aux_sensitive);
ops_button_set_sensitive (channels_ops_buttons[3], !fs_sensitive && aux_sensitive);
/* delete channel */
gtk_widget_set_sensitive (channels_ops[4].widget, !fs_sensitive && aux_sensitive);
ops_button_set_sensitive (channels_ops_buttons[4], !fs_sensitive && aux_sensitive);
/* channel to selection */
gtk_widget_set_sensitive (channels_ops[5].widget, aux_sensitive);
}
static void
channels_dialog_set_channel (ChannelWidget *channel_widget)
{
GtkStateType state;
int index;
if (!channelsD || !channel_widget)
return;
/* Make sure the gimage is not notified of this change */
suspend_gimage_notify++;
/* get the list item data */
state = channel_widget->list_item->state;
if (channel_widget->type == Auxillary)
{
/* turn on the specified auxillary channel */
index = gimage_get_channel_index (channel_widget->gimage, channel_widget->channel);
if ((index >= 0) && (state != GTK_STATE_SELECTED))
{
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), NULL);
gtk_list_select_item (GTK_LIST (channelsD->channel_list), index + channelsD->num_components);
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), channel_widget);
}
}
else
{
if (state != GTK_STATE_SELECTED)
{
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), NULL);
switch (channel_widget->type)
{
case Red: case Gray: case Indexed:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 0);
break;
case Green:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 1);
break;
case Blue:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 2);
break;
case Auxillary:
g_error ("error in %s at %d: this shouldn't happen.",
__FILE__, __LINE__);
break;
}
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), channel_widget);
}
}
suspend_gimage_notify--;
}
static void
channels_dialog_unset_channel (ChannelWidget * channel_widget)
{
GtkStateType state;
int index;
if (!channelsD || !channel_widget)
return;
/* Make sure the gimage is not notified of this change */
suspend_gimage_notify++;
/* get the list item data */
state = channel_widget->list_item->state;
if (channel_widget->type == Auxillary)
{
/* turn off the specified auxillary channel */
index = gimage_get_channel_index (channel_widget->gimage, channel_widget->channel);
if ((index >= 0) && (state == GTK_STATE_SELECTED))
{
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), NULL);
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), index + channelsD->num_components);
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), channel_widget);
}
}
else
{
if (state == GTK_STATE_SELECTED)
{
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), NULL);
switch (channel_widget->type)
{
case Red: case Gray: case Indexed:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 0);
break;
case Green:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 1);
break;
case Blue:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 2);
break;
case Auxillary:
g_error ("error in %s at %d: this shouldn't happen.",
__FILE__, __LINE__);
break;
}
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item), channel_widget);
}
}
suspend_gimage_notify--;
}
static void
channels_dialog_position_channel (ChannelWidget *channel_widget,
int new_index)
{
GList *list = NULL;
if (!channelsD || !channel_widget)
return;
/* Make sure the gimage is not notified of this change */
suspend_gimage_notify++;
/* Remove the channel from the dialog */
list = g_list_append (list, channel_widget->list_item);
gtk_list_remove_items (GTK_LIST (channelsD->channel_list), list);
channelsD->channel_widgets = g_slist_remove (channelsD->channel_widgets, channel_widget);
suspend_gimage_notify--;
/* Add it back at the proper index */
gtk_list_insert_items (GTK_LIST (channelsD->channel_list), list, new_index + channelsD->num_components);
channelsD->channel_widgets = g_slist_insert (channelsD->channel_widgets, channel_widget, new_index + channelsD->num_components);
}
static void
channels_dialog_add_channel (Channel *channel)
{
GImage *gimage;
GList *item_list;
ChannelWidget *channel_widget;
int position;
if (!channelsD || !channel)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
item_list = NULL;
channel_widget = create_channel_widget (gimage, channel, Auxillary);
item_list = g_list_append (item_list, channel_widget->list_item);
position = gimage_get_channel_index (gimage, channel);
channelsD->channel_widgets = g_slist_insert (channelsD->channel_widgets, channel_widget,
position + channelsD->num_components);
gtk_list_insert_items (GTK_LIST (channelsD->channel_list), item_list,
position + channelsD->num_components);
}
static void
channels_dialog_remove_channel (ChannelWidget *channel_widget)
{
GList *list = NULL;
if (!channelsD || !channel_widget)
return;
/* Make sure the gimage is not notified of this change */
suspend_gimage_notify++;
/* Remove the requested channel from the dialog */
list = g_list_append (list, channel_widget->list_item);
gtk_list_remove_items (GTK_LIST (channelsD->channel_list), list);
/* Delete the channel_widget */
channel_widget_delete (channel_widget);
suspend_gimage_notify--;
}
static gint
channel_list_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventKey *kevent;
GdkEventButton *bevent;
GtkWidget *event_widget;
ChannelWidget *channel_widget;
event_widget = gtk_get_event_widget (event);
if (GTK_IS_LIST_ITEM (event_widget))
{
channel_widget = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (event_widget));
switch (event->type)
{
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 3)
{
gtk_menu_popup (GTK_MENU (channelsD->ops_menu), NULL, NULL, NULL, NULL, 3, bevent->time);
return TRUE;
}
/* Grumble - we have to handle double clicks ourselves because channels_dialog_flush is broken */
if (channel_widget->type == Auxillary)
if ((event->button.time < (button_click_time + 250)) && (channel_widget->ID == button_last_id)) {
channels_dialog_edit_channel_query (channel_widget);
return TRUE;
} else {
button_click_time = event->button.time;
button_last_id = channel_widget->ID;
}
break;
case GDK_2BUTTON_PRESS:
if (channel_widget->type == Auxillary)
channels_dialog_edit_channel_query (channel_widget);
return TRUE;
break;
case GDK_KEY_PRESS:
kevent = (GdkEventKey *) event;
switch (kevent->keyval)
{
case GDK_Up:
printf ("up arrow\n");
break;
case GDK_Down:
printf ("down arrow\n");
break;
default:
return FALSE;
break;
}
return TRUE;
break;
default:
break;
}
}
return FALSE;
}
/*******************************/
/* channels dialog callbacks */
/*******************************/
static void
channels_dialog_map_callback (GtkWidget *w,
gpointer client_data)
{
if (!channelsD)
return;
gtk_window_add_accelerator_table (GTK_WINDOW (lc_shell),
channelsD->accel_table);
}
static void
channels_dialog_unmap_callback (GtkWidget *w,
gpointer client_data)
{
if (!channelsD)
return;
gtk_window_remove_accelerator_table (GTK_WINDOW (lc_shell),
channelsD->accel_table);
}
static void
channels_dialog_new_channel_callback (GtkWidget *w,
gpointer client_data)
{
/* if there is a currently selected gimage, request a new channel
*/
if (!channelsD)
return;
if (channelsD->gimage_id == -1)
return;
channels_dialog_new_channel_query (channelsD->gimage_id);
}
static void
channels_dialog_raise_channel_callback (GtkWidget *w,
gpointer client_data)
{
GImage *gimage;
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
if (gimage->active_channel != NULL)
{
gimage_raise_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
static void
channels_dialog_lower_channel_callback (GtkWidget *w,
gpointer client_data)
{
GImage *gimage;
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
if (gimage->active_channel != NULL)
{
gimage_lower_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
static void
channels_dialog_duplicate_channel_callback (GtkWidget *w,
gpointer client_data)
{
GImage *gimage;
Channel *active_channel;
Channel *new_channel;
/* if there is a currently selected gimage, request a new channel
*/
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
if ((active_channel = gimage_get_active_channel (gimage)))
{
new_channel = channel_copy (active_channel);
gimage_add_channel (gimage, new_channel, -1);
gdisplays_flush ();
}
}
static void
channels_dialog_delete_channel_callback (GtkWidget *w,
gpointer client_data)
{
GImage *gimage;
/* if there is a currently selected gimage
*/
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
if (gimage->active_channel != NULL)
{
gimage_remove_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
static void
channels_dialog_channel_to_sel_callback (GtkWidget *w,
gpointer client_data)
{
GImage *gimage;
/* if there is a currently selected gimage
*/
if (!channelsD)
return;
if (! (gimage = gimage_get_ID (channelsD->gimage_id)))
return;
if (gimage->active_channel != NULL)
{
gimage_mask_load (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
/****************************/
/* channel widget functions */
/****************************/
static ChannelWidget *
channel_widget_get_ID (Channel *channel)
{
ChannelWidget *lw;
GSList *list;
if (!channelsD)
return NULL;
list = channelsD->channel_widgets;
while (list)
{
lw = (ChannelWidget *) list->data;
if (lw->channel == channel)
return lw;
list = g_slist_next (list);
}
return NULL;
}
static ChannelWidget *
create_channel_widget (GImage *gimage,
Channel *channel,
ChannelType type)
{
ChannelWidget *channel_widget;
GtkWidget *list_item;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *alignment;
list_item = gtk_list_item_new ();
/* create the channel widget and add it to the list */
channel_widget = (ChannelWidget *) g_malloc (sizeof (ChannelWidget));
channel_widget->gimage = gimage;
channel_widget->channel = channel;
channel_widget->channel_preview = NULL;
channel_widget->channel_pixmap = NULL;
channel_widget->type = type;
channel_widget->ID = (type == Auxillary) ? GIMP_DRAWABLE(channel)->ID : (COMPONENT_BASE_ID + type);
channel_widget->list_item = list_item;
channel_widget->width = -1;
channel_widget->height = -1;
channel_widget->visited = TRUE;
/* Need to let the list item know about the channel_widget */
gtk_object_set_user_data (GTK_OBJECT (list_item), channel_widget);
/* set up the list item observer */
gtk_signal_connect (GTK_OBJECT (list_item), "select",
(GtkSignalFunc) channel_widget_select_update,
channel_widget);
gtk_signal_connect (GTK_OBJECT (list_item), "deselect",
(GtkSignalFunc) channel_widget_select_update,
channel_widget);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_add (GTK_CONTAINER (list_item), vbox);
hbox = gtk_hbox_new (FALSE, 1);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 1);
/* Create the visibility toggle button */
alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (hbox), alignment, FALSE, TRUE, 2);
channel_widget->eye_widget = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (channel_widget->eye_widget), eye_width, eye_height);
gtk_widget_set_events (channel_widget->eye_widget, BUTTON_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (channel_widget->eye_widget), "event",
(GtkSignalFunc) channel_widget_button_events,
channel_widget);
gtk_object_set_user_data (GTK_OBJECT (channel_widget->eye_widget), channel_widget);
gtk_container_add (GTK_CONTAINER (alignment), channel_widget->eye_widget);
gtk_widget_show (channel_widget->eye_widget);
gtk_widget_show (alignment);
/* The preview */
alignment = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (hbox), alignment, FALSE, FALSE, 2);
gtk_widget_show (alignment);
channel_widget->channel_preview = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (channel_widget->channel_preview),
channelsD->image_width, channelsD->image_height);
gtk_widget_set_events (channel_widget->channel_preview, PREVIEW_EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (channel_widget->channel_preview), "event",
(GtkSignalFunc) channel_widget_preview_events,
channel_widget);
gtk_object_set_user_data (GTK_OBJECT (channel_widget->channel_preview), channel_widget);
gtk_container_add (GTK_CONTAINER (alignment), channel_widget->channel_preview);
gtk_widget_show (channel_widget->channel_preview);
/* the channel name label */
switch (channel_widget->type)
{
case Red: channel_widget->label = gtk_label_new ("Red"); break;
case Green: channel_widget->label = gtk_label_new ("Green"); break;
case Blue: channel_widget->label = gtk_label_new ("Blue"); break;
case Gray: channel_widget->label = gtk_label_new ("Gray"); break;
case Indexed: channel_widget->label = gtk_label_new ("Indexed"); break;
case Auxillary: channel_widget->label = gtk_label_new (GIMP_DRAWABLE(channel)->name); break;
}
gtk_box_pack_start (GTK_BOX (hbox), channel_widget->label, FALSE, FALSE, 2);
gtk_widget_show (channel_widget->label);
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (list_item);
gtk_widget_ref (channel_widget->list_item);
return channel_widget;
}
static void
channel_widget_delete (ChannelWidget *channel_widget)
{
if (channel_widget->channel_pixmap)
gdk_pixmap_unref (channel_widget->channel_pixmap);
/* Remove the channel widget from the list */
channelsD->channel_widgets = g_slist_remove (channelsD->channel_widgets, channel_widget);
/* Release the widget */
gtk_widget_unref (channel_widget->list_item);
g_free (channel_widget);
}
static void
channel_widget_select_update (GtkWidget *w,
gpointer data)
{
ChannelWidget *channel_widget;
if ((channel_widget = (ChannelWidget *) data) == NULL)
return;
if (suspend_gimage_notify == 0)
{
if (channel_widget->type == Auxillary)
{
if (w->state == GTK_STATE_SELECTED)
/* set the gimage's active channel to be this channel */
gimage_set_active_channel (channel_widget->gimage, channel_widget->channel);
else
/* unset the gimage's active channel */
gimage_unset_active_channel (channel_widget->gimage);
gdisplays_flush ();
}
else if (channel_widget->type != Auxillary)
{
if (w->state == GTK_STATE_SELECTED)
gimage_set_component_active (channel_widget->gimage, channel_widget->type, TRUE);
else
gimage_set_component_active (channel_widget->gimage, channel_widget->type, FALSE);
}
}
}
static gint
channel_widget_button_events (GtkWidget *widget,
GdkEvent *event)
{
static int button_down = 0;
static GtkWidget *click_widget = NULL;
static int old_state;
static int exclusive;
ChannelWidget *channel_widget;
GtkWidget *event_widget;
GdkEventButton *bevent;
gint return_val;
int visible;
int width, height;
channel_widget = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
switch (channel_widget->type)
{
case Auxillary:
visible = GIMP_DRAWABLE(channel_widget->channel)->visible;
width = GIMP_DRAWABLE(channel_widget->channel)->width;
height = GIMP_DRAWABLE(channel_widget->channel)->height;
break;
default:
visible = gimage_get_component_visible (channel_widget->gimage, channel_widget->type);
width = channel_widget->gimage->width;
height = channel_widget->gimage->height;
break;
}
return_val = FALSE;
switch (event->type)
{
case GDK_EXPOSE:
if (widget == channel_widget->eye_widget)
channel_widget_eye_redraw (channel_widget);
break;
case GDK_BUTTON_PRESS:
return_val = TRUE;
bevent = (GdkEventButton *) event;
if (bevent->button == 3) {
gtk_menu_popup (GTK_MENU (channelsD->ops_menu), NULL, NULL, NULL, NULL, 3, bevent->time);
return TRUE;
}
button_down = 1;
click_widget = widget;
gtk_grab_add (click_widget);
if (widget == channel_widget->eye_widget)
{
old_state = visible;
/* If this was a shift-click, make all/none visible */
if (event->button.state & GDK_SHIFT_MASK)
{
exclusive = TRUE;
channel_widget_exclusive_visible (channel_widget);
}
else
{
exclusive = FALSE;
if (channel_widget->type == Auxillary)
GIMP_DRAWABLE(channel_widget->channel)->visible = !visible;
else
gimage_set_component_visible (channel_widget->gimage, channel_widget->type, !visible);
channel_widget_eye_redraw (channel_widget);
}
}
break;
case GDK_BUTTON_RELEASE:
return_val = TRUE;
button_down = 0;
gtk_grab_remove (click_widget);
if (widget == channel_widget->eye_widget)
{
if (exclusive)
{
gdisplays_update_area (channel_widget->gimage->ID, 0, 0, width, height);
gdisplays_flush ();
}
else if (old_state != visible)
{
gdisplays_update_area (channel_widget->gimage->ID, 0, 0, width, height);
gdisplays_flush ();
}
}
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
event_widget = gtk_get_event_widget (event);
if (button_down && (event_widget == click_widget))
{
if (widget == channel_widget->eye_widget)
{
if (exclusive)
{
channel_widget_exclusive_visible (channel_widget);
}
else
{
if (channel_widget->type == Auxillary)
GIMP_DRAWABLE(channel_widget->channel)->visible = !visible;
else
gimage_set_component_visible (channel_widget->gimage, channel_widget->type, !visible);
channel_widget_eye_redraw (channel_widget);
}
}
}
break;
default:
break;
}
return return_val;
}
static gint
channel_widget_preview_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventExpose *eevent;
GdkEventButton *bevent;
ChannelWidget *channel_widget;
int valid;
channel_widget = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
switch (event->type)
{
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 3) {
gtk_menu_popup (GTK_MENU (channelsD->ops_menu), NULL, NULL, NULL, NULL, 3, bevent->time);
return TRUE;
}
break;
case GDK_EXPOSE:
if (!preview_size)
channel_widget_no_preview_redraw (channel_widget);
else
{
switch (channel_widget->type)
{
case Auxillary:
valid = GIMP_DRAWABLE(channel_widget->channel)->preview_valid;
break;
default:
valid = gimage_preview_valid (channel_widget->gimage, channel_widget->type);
break;
}
if (!valid || !channel_widget->channel_pixmap)
{
channel_widget_preview_redraw (channel_widget);
gdk_draw_pixmap (widget->window,
widget->style->black_gc,
channel_widget->channel_pixmap,
0, 0, 0, 0,
channelsD->image_width,
channelsD->image_height);
}
else
{
eevent = (GdkEventExpose *) event;
gdk_draw_pixmap (widget->window,
widget->style->black_gc,
channel_widget->channel_pixmap,
eevent->area.x, eevent->area.y,
eevent->area.x, eevent->area.y,
eevent->area.width, eevent->area.height);
}
}
break;
default:
break;
}
return FALSE;
}
static void
channel_widget_preview_redraw (ChannelWidget *channel_widget)
{
TempBuf * preview_buf;
int width, height;
int channel;
/* allocate the channel widget pixmap */
if (! channel_widget->channel_pixmap)
channel_widget->channel_pixmap = gdk_pixmap_new (channel_widget->channel_preview->window,
channelsD->image_width,
channelsD->image_height,
-1);
/* determine width and height */
switch (channel_widget->type)
{
case Auxillary:
width = GIMP_DRAWABLE(channel_widget->channel)->width;
height = GIMP_DRAWABLE(channel_widget->channel)->height;
channel_widget->width = (int) (channelsD->ratio * width);
channel_widget->height = (int) (channelsD->ratio * height);
preview_buf = channel_preview (channel_widget->channel,
channel_widget->width,
channel_widget->height);
break;
default:
width = channel_widget->gimage->width;
height = channel_widget->gimage->height;
channel_widget->width = (int) (channelsD->ratio * width);
channel_widget->height = (int) (channelsD->ratio * height);
preview_buf = gimage_composite_preview (channel_widget->gimage,
channel_widget->type,
channel_widget->width,
channel_widget->height);
break;
}
switch (channel_widget->type)
{
case Red: channel = RED_PIX; break;
case Green: channel = GREEN_PIX; break;
case Blue: channel = BLUE_PIX; break;
case Gray: channel = GRAY_PIX; break;
case Indexed: channel = INDEXED_PIX; break;
case Auxillary: channel = -1; break;
default: channel = -1; break;
}
render_preview (preview_buf,
channelsD->preview,
channelsD->image_width,
channelsD->image_height,
channel);
gtk_preview_put (GTK_PREVIEW (channelsD->preview),
channel_widget->channel_pixmap,
channel_widget->channel_preview->style->black_gc,
0, 0, 0, 0, channelsD->image_width, channelsD->image_height);
/* make sure the image has been transfered completely to the pixmap before
* we use it again...
*/
gdk_flush ();
}
static void
channel_widget_no_preview_redraw (ChannelWidget *channel_widget)
{
GdkPixmap *pixmap;
GdkPixmap **pixmap_normal;
GdkPixmap **pixmap_selected;
GdkPixmap **pixmap_insensitive;
GdkColor *color;
GtkWidget *widget;
GtkStateType state;
gchar *bits;
int width, height;
state = channel_widget->list_item->state;
widget = channel_widget->channel_preview;
pixmap_normal = &channel_pixmap[NORMAL];
pixmap_selected = &channel_pixmap[SELECTED];
pixmap_insensitive = &channel_pixmap[INSENSITIVE];
bits = (gchar *) channel_bits;
width = channel_width;
height = channel_height;
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
{
if (state == GTK_STATE_SELECTED)
color = &widget->style->bg[GTK_STATE_SELECTED];
else
color = &widget->style->white;
}
else
color = &widget->style->bg[GTK_STATE_INSENSITIVE];
gdk_window_set_background (widget->window, color);
if (!*pixmap_normal)
{
*pixmap_normal =
gdk_pixmap_create_from_data (widget->window,
bits, width, height, -1,
&widget->style->fg[GTK_STATE_SELECTED],
&widget->style->bg[GTK_STATE_SELECTED]);
*pixmap_selected =
gdk_pixmap_create_from_data (widget->window,
bits, width, height, -1,
&widget->style->fg[GTK_STATE_NORMAL],
&widget->style->white);
*pixmap_insensitive =
gdk_pixmap_create_from_data (widget->window,
bits, width, height, -1,
&widget->style->fg[GTK_STATE_INSENSITIVE],
&widget->style->bg[GTK_STATE_INSENSITIVE]);
}
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
{
if (state == GTK_STATE_SELECTED)
pixmap = *pixmap_selected;
else
pixmap = *pixmap_normal;
}
else
pixmap = *pixmap_insensitive;
gdk_draw_pixmap (widget->window,
widget->style->black_gc,
pixmap, 0, 0, 0, 0, width, height);
}
static void
channel_widget_eye_redraw (ChannelWidget *channel_widget)
{
GdkPixmap *pixmap;
GdkColor *color;
GtkStateType state;
int visible;
state = channel_widget->list_item->state;
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
{
if (state == GTK_STATE_SELECTED)
color = &channel_widget->eye_widget->style->bg[GTK_STATE_SELECTED];
else
color = &channel_widget->eye_widget->style->white;
}
else
color = &channel_widget->eye_widget->style->bg[GTK_STATE_INSENSITIVE];
gdk_window_set_background (channel_widget->eye_widget->window, color);
switch (channel_widget->type)
{
case Auxillary:
visible = GIMP_DRAWABLE(channel_widget->channel)->visible;
break;
default:
visible = gimage_get_component_visible (channel_widget->gimage, channel_widget->type);
break;
}
if (visible)
{
if (!eye_pixmap[NORMAL])
{
eye_pixmap[NORMAL] =
gdk_pixmap_create_from_data (channel_widget->eye_widget->window,
(gchar*) eye_bits, eye_width, eye_height, -1,
&channel_widget->eye_widget->style->fg[GTK_STATE_NORMAL],
&channel_widget->eye_widget->style->white);
eye_pixmap[SELECTED] =
gdk_pixmap_create_from_data (channel_widget->eye_widget->window,
(gchar*) eye_bits, eye_width, eye_height, -1,
&channel_widget->eye_widget->style->fg[GTK_STATE_SELECTED],
&channel_widget->eye_widget->style->bg[GTK_STATE_SELECTED]);
eye_pixmap[INSENSITIVE] =
gdk_pixmap_create_from_data (channel_widget->eye_widget->window,
(gchar*) eye_bits, eye_width, eye_height, -1,
&channel_widget->eye_widget->style->fg[GTK_STATE_INSENSITIVE],
&channel_widget->eye_widget->style->bg[GTK_STATE_INSENSITIVE]);
}
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
{
if (state == GTK_STATE_SELECTED)
pixmap = eye_pixmap[SELECTED];
else
pixmap = eye_pixmap[NORMAL];
}
else
pixmap = eye_pixmap[INSENSITIVE];
gdk_draw_pixmap (channel_widget->eye_widget->window,
channel_widget->eye_widget->style->black_gc,
pixmap, 0, 0, 0, 0, eye_width, eye_height);
}
else
{
gdk_window_clear (channel_widget->eye_widget->window);
}
}
static void
channel_widget_exclusive_visible (ChannelWidget *channel_widget)
{
GSList *list;
ChannelWidget *cw;
int visible = FALSE;
if (!channelsD)
return;
/* First determine if _any_ other channel widgets are set to visible */
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
if (cw != channel_widget)
{
switch (cw->type)
{
case Auxillary:
visible |= GIMP_DRAWABLE(cw->channel)->visible;
break;
default:
visible |= gimage_get_component_visible (cw->gimage, cw->type);
break;
}
}
list = g_slist_next (list);
}
/* Now, toggle the visibility for all channels except the specified one */
list = channelsD->channel_widgets;
while (list)
{
cw = (ChannelWidget *) list->data;
if (cw != channel_widget)
switch (cw->type)
{
case Auxillary:
GIMP_DRAWABLE(cw->channel)->visible = !visible;
break;
default:
gimage_set_component_visible (cw->gimage, cw->type, !visible);
break;
}
else
switch (cw->type)
{
case Auxillary:
GIMP_DRAWABLE(cw->channel)->visible = TRUE;
break;
default:
gimage_set_component_visible (cw->gimage, cw->type, TRUE);
break;
}
channel_widget_eye_redraw (cw);
list = g_slist_next (list);
}
}
static void
channel_widget_channel_flush (GtkWidget *widget,
gpointer client_data)
{
ChannelWidget *channel_widget;
int update_preview;
channel_widget = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
/*** Sensitivity ***/
/* If there is a floating selection... */
if (channelsD->floating_sel != NULL)
{
/* to insensitive if this is an auxillary channel */
if (channel_widget->type == Auxillary)
{
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
gtk_widget_set_sensitive (channel_widget->list_item, FALSE);
}
/* to sensitive otherwise */
else
{
if (! GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
gtk_widget_set_sensitive (channel_widget->list_item, TRUE);
}
}
else
{
/* to insensitive if there is an active channel, and this is a component channel */
if (channel_widget->type != Auxillary && channelsD->active_channel != NULL)
{
if (GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
gtk_widget_set_sensitive (channel_widget->list_item, FALSE);
}
/* to sensitive otherwise */
else
{
if (! GTK_WIDGET_IS_SENSITIVE (channel_widget->list_item))
gtk_widget_set_sensitive (channel_widget->list_item, TRUE);
}
}
/*** Selection ***/
/* If this is an auxillary channel */
if (channel_widget->type == Auxillary)
{
/* select if this is the active channel */
if (channelsD->active_channel == (channel_widget->channel))
channels_dialog_set_channel (channel_widget);
/* unselect if this is not the active channel */
else
channels_dialog_unset_channel (channel_widget);
}
else
{
/* If the component is active, select. otherwise, deselect */
if (gimage_get_component_active (channel_widget->gimage, channel_widget->type))
channels_dialog_set_channel (channel_widget);
else
channels_dialog_unset_channel (channel_widget);
}
switch (channel_widget->type)
{
case Auxillary:
update_preview = !GIMP_DRAWABLE(channel_widget->channel)->preview_valid;
break;
default:
update_preview = !gimage_preview_valid (channel_widget->gimage, channel_widget->type);
break;
}
if (update_preview)
gtk_widget_draw (channel_widget->channel_preview, NULL);
}
/*
* The new channel query dialog
*/
typedef struct _NewChannelOptions NewChannelOptions;
struct _NewChannelOptions {
GtkWidget *query_box;
GtkWidget *name_entry;
ColorPanel *color_panel;
int gimage_id;
double opacity;
};
static char *channel_name = NULL;
static unsigned char channel_color[3] = {0, 0, 0};
static void
new_channel_query_ok_callback (GtkWidget *w,
gpointer client_data)
{
NewChannelOptions *options;
Channel *new_channel;
GImage *gimage;
int i;
options = (NewChannelOptions *) client_data;
if (channel_name)
g_free (channel_name);
channel_name = g_strdup (gtk_entry_get_text (GTK_ENTRY (options->name_entry)));
if ((gimage = gimage_get_ID (options->gimage_id)))
{
new_channel = channel_new (gimage->ID, gimage->width, gimage->height,
channel_name, (int) (255 * options->opacity) / 100,
options->color_panel->color);
drawable_fill (GIMP_DRAWABLE(new_channel), TRANSPARENT_FILL);
for (i = 0; i < 3; i++)
channel_color[i] = options->color_panel->color[i];
gimage_add_channel (gimage, new_channel, -1);
gdisplays_flush ();
}
color_panel_free (options->color_panel);
gtk_widget_destroy (options->query_box);
g_free (options);
}
static void
new_channel_query_cancel_callback (GtkWidget *w,
gpointer client_data)
{
NewChannelOptions *options;
options = (NewChannelOptions *) client_data;
color_panel_free (options->color_panel);
gtk_widget_destroy (options->query_box);
g_free (options);
}
static gint
new_channel_query_delete_callback (GtkWidget *w,
GdkEvent *e,
gpointer client_data)
{
new_channel_query_cancel_callback (w, client_data);
return TRUE;
}
static void
new_channel_query_scale_update (GtkAdjustment *adjustment,
double *scale_val)
{
*scale_val = adjustment->value;
}
static void
channels_dialog_new_channel_query (int gimage_id)
{
static ActionAreaItem action_items[2] =
{
{ "OK", new_channel_query_ok_callback, NULL, NULL },
{ "Cancel", new_channel_query_cancel_callback, NULL, NULL }
};
GImage *gimage;
NewChannelOptions *options;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *opacity_scale;
GtkObject *opacity_scale_data;
gimage = gimage_get_ID (gimage_id);
/* the new options structure */
options = (NewChannelOptions *) g_malloc (sizeof (NewChannelOptions));
options->gimage_id = gimage_id;
options->opacity = 50.0;
options->color_panel = color_panel_new (channel_color, 48, 64);
/* the dialog */
options->query_box = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (options->query_box), "new_channel_options", "Gimp");
gtk_window_set_title (GTK_WINDOW (options->query_box), "New Channel Options");
gtk_window_position (GTK_WINDOW (options->query_box), GTK_WIN_POS_MOUSE);
/* handle the wm close signal */
gtk_signal_connect (GTK_OBJECT (options->query_box), "delete_event",
GTK_SIGNAL_FUNC (new_channel_query_delete_callback),
options);
/* the main vbox */
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_border_width (GTK_CONTAINER (vbox), 1);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (options->query_box)->vbox), vbox, TRUE, TRUE, 0);
/* The table */
table = gtk_table_new (2, 3, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
/* the name entry hbox, label and entry */
label = gtk_label_new ("Channel name: ");
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 1);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_widget_set_usize (options->name_entry, 75, 0);
gtk_table_attach (GTK_TABLE (table), options->name_entry, 1, 2, 0, 1,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_SHRINK, 1, 1);
gtk_entry_set_text (GTK_ENTRY (options->name_entry), (channel_name ? channel_name : "New Channel"));
gtk_widget_show (options->name_entry);
/* the opacity scale */
label = gtk_label_new ("Fill Opacity: ");
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK, 0, 1);
gtk_widget_show (label);
opacity_scale_data = gtk_adjustment_new (options->opacity, 0.0, 100.0, 1.0, 1.0, 0.0);
opacity_scale = gtk_hscale_new (GTK_ADJUSTMENT (opacity_scale_data));
gtk_table_attach (GTK_TABLE (table), opacity_scale, 1, 2, 1, 2,
GTK_EXPAND | GTK_SHRINK | GTK_FILL, GTK_SHRINK, 1, 1);
gtk_scale_set_value_pos (GTK_SCALE (opacity_scale), GTK_POS_TOP);
gtk_range_set_update_policy (GTK_RANGE (opacity_scale), GTK_UPDATE_DELAYED);
gtk_signal_connect (GTK_OBJECT (opacity_scale_data), "value_changed",
(GtkSignalFunc) new_channel_query_scale_update,
&options->opacity);
gtk_widget_show (opacity_scale);
/* the color panel */
gtk_table_attach (GTK_TABLE (table), options->color_panel->color_panel_widget,
2, 3, 0, 2, GTK_EXPAND, GTK_EXPAND, 4, 2);
gtk_widget_show (options->color_panel->color_panel_widget);
action_items[0].user_data = options;
action_items[1].user_data = options;
build_action_area (GTK_DIALOG (options->query_box), action_items, 2, 0);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (options->query_box);
}
/*
* The edit channel attributes dialog
*/
typedef struct _EditChannelOptions EditChannelOptions;
struct _EditChannelOptions {
GtkWidget *query_box;
GtkWidget *name_entry;
ChannelWidget *channel_widget;
int gimage_id;
ColorPanel *color_panel;
double opacity;
};
static void
edit_channel_query_ok_callback (GtkWidget *w,
gpointer client_data)
{
EditChannelOptions *options;
Channel *channel;
int opacity;
int update = FALSE;
int i;
options = (EditChannelOptions *) client_data;
channel = options->channel_widget->channel;
opacity = (int) (255 * options->opacity) / 100;
if (gimage_get_ID (options->gimage_id)) {
/* Set the new channel name */
if (GIMP_DRAWABLE(channel)->name)
g_free (GIMP_DRAWABLE(channel)->name);
GIMP_DRAWABLE(channel)->name = g_strdup (gtk_entry_get_text (GTK_ENTRY (options->name_entry)));
gtk_label_set (GTK_LABEL (options->channel_widget->label), GIMP_DRAWABLE(channel)->name);
if (channel->opacity != opacity)
{
channel->opacity = opacity;
update = TRUE;
}
for (i = 0; i < 3; i++)
if (options->color_panel->color[i] != channel->col[i])
{
channel->col[i] = options->color_panel->color[i];
update = TRUE;
}
if (update)
{
drawable_update (GIMP_DRAWABLE(channel), 0, 0, GIMP_DRAWABLE(channel)->width, GIMP_DRAWABLE(channel)->height);
gdisplays_flush ();
}
}
color_panel_free (options->color_panel);
gtk_widget_destroy (options->query_box);
g_free (options);
}
static void
edit_channel_query_cancel_callback (GtkWidget *w,
gpointer client_data)
{
EditChannelOptions *options;
options = (EditChannelOptions *) client_data;
color_panel_free (options->color_panel);
gtk_widget_destroy (options->query_box);
g_free (options);
}
static gint
edit_channel_query_delete_callback (GtkWidget *w,
GdkEvent *e,
gpointer client_data)
{
edit_channel_query_cancel_callback (w, client_data);
return TRUE;
}
static void
channels_dialog_edit_channel_query (ChannelWidget *channel_widget)
{
static ActionAreaItem action_items[2] =
{
{ "OK", edit_channel_query_ok_callback, NULL, NULL },
{ "Cancel", edit_channel_query_cancel_callback, NULL, NULL }
};
EditChannelOptions *options;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *opacity_scale;
GtkObject *opacity_scale_data;
int i;
/* the new options structure */
options = (EditChannelOptions *) g_malloc (sizeof (EditChannelOptions));
options->channel_widget = channel_widget;
options->gimage_id = channel_widget->gimage->ID;
options->opacity = (double) channel_widget->channel->opacity / 2.55;
for (i = 0; i < 3; i++)
channel_color[i] = channel_widget->channel->col[i];
options->color_panel = color_panel_new (channel_color, 48, 64);
/* the dialog */
options->query_box = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (options->query_box), "edit_channel_atributes", "Gimp");
gtk_window_set_title (GTK_WINDOW (options->query_box), "Edit Channel Attributes");
gtk_window_position (GTK_WINDOW (options->query_box), GTK_WIN_POS_MOUSE);
/* deal with the wm close signal */
gtk_signal_connect (GTK_OBJECT (options->query_box), "delete_event",
GTK_SIGNAL_FUNC (edit_channel_query_delete_callback),
options);
/* the main vbox */
vbox = gtk_vbox_new (FALSE, 1);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (options->query_box)->vbox), vbox, TRUE, TRUE, 0);
/* The table */
table = gtk_table_new (2, 2, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, TRUE, TRUE, 0);
/* the name entry hbox, label and entry */
hbox = gtk_hbox_new (FALSE, 1);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, 0, 2, 2);
label = gtk_label_new ("Channel name:");
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_box_pack_start (GTK_BOX (hbox), options->name_entry, TRUE, TRUE, 0);
gtk_entry_set_text (GTK_ENTRY (options->name_entry), GIMP_DRAWABLE(channel_widget->channel)->name);
gtk_widget_show (options->name_entry);
gtk_widget_show (hbox);
/* the opacity scale */
hbox = gtk_hbox_new (FALSE, 1);
gtk_table_attach (GTK_TABLE (table), hbox, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, 0, 2, 2);
label = gtk_label_new ("Fill Opacity");
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
opacity_scale_data = gtk_adjustment_new (options->opacity, 0.0, 100.0, 1.0, 1.0, 0.0);
opacity_scale = gtk_hscale_new (GTK_ADJUSTMENT (opacity_scale_data));
gtk_box_pack_start (GTK_BOX (hbox), opacity_scale, TRUE, TRUE, 0);
gtk_scale_set_value_pos (GTK_SCALE (opacity_scale), GTK_POS_TOP);
gtk_signal_connect (GTK_OBJECT (opacity_scale_data), "value_changed",
(GtkSignalFunc) new_channel_query_scale_update,
&options->opacity);
gtk_widget_show (opacity_scale);
gtk_widget_show (hbox);
/* the color panel */
gtk_table_attach (GTK_TABLE (table), options->color_panel->color_panel_widget,
1, 2, 0, 2, GTK_EXPAND, GTK_EXPAND, 4, 2);
gtk_widget_show (options->color_panel->color_panel_widget);
action_items[0].user_data = options;
action_items[1].user_data = options;
build_action_area (GTK_DIALOG (options->query_box), action_items, 2, 0);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (options->query_box);
}
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