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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 "config.h"
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpmath/gimpmath.h"
#include "apptypes.h"
#include "appenv.h"
#include "channel.h"
#include "channels_dialog.h"
#include "color_panel.h"
#include "drawable.h"
#include "gdisplay.h"
#include "gimage.h"
#include "gimage_mask.h"
#include "gimpdnd.h"
#include "gimppreviewcache.h"
#include "gimprc.h"
#include "gimpui.h"
#include "layers_dialogP.h"
#include "lc_dialogP.h"
#include "menus.h"
#include "ops_buttons.h"
#include "paint_funcs.h"
#include "undo.h"
#include "libgimp/gimphelpui.h"
#include "libgimp/gimpintl.h"
#include "pixmaps/eye.xbm"
#include "pixmaps/channel.xbm"
#include "pixmaps/new.xpm"
#include "pixmaps/raise.xpm"
#include "pixmaps/lower.xpm"
#include "pixmaps/duplicate.xpm"
#include "pixmaps/delete.xpm"
#include "pixmaps/toselection.xpm"
#define COMPONENT_BASE_ID 0x10000000
typedef struct _ChannelsDialog ChannelsDialog;
struct _ChannelsDialog
{
GtkWidget *vbox;
GtkWidget *channel_list;
GtkWidget *scrolled_win;
GtkWidget *preview;
GtkWidget *ops_menu;
GtkAccelGroup *accel_group;
/* state information */
GimpImage *gimage;
gint image_width, image_height;
gint gimage_width, gimage_height;
gdouble ratio;
gint num_components;
gint base_type;
ChannelType components[3];
Channel *active_channel;
Layer *floating_sel;
GSList *channel_widgets;
};
typedef struct _ChannelWidget ChannelWidget;
struct _ChannelWidget
{
GtkWidget *eye_widget;
GtkWidget *clip_widget;
GtkWidget *channel_preview;
GtkWidget *list_item;
GtkWidget *label;
GdkPixmap *channel_pixmap;
/* state information */
GimpImage *gimage;
Channel *channel;
gint width, height;
ChannelType type;
gint ID;
gboolean visited;
GimpDropType drop_type;
};
/* 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 *cw);
static void channels_dialog_unset_channel (ChannelWidget *cw);
static void channels_dialog_position_channel (Channel *channel,
gint position);
static void channels_dialog_add_channel (Channel *channel);
static void channels_dialog_remove_channel (ChannelWidget *cw);
static gint channel_list_events (GtkWidget *widget,
GdkEvent *event);
/* for (un)installing the menu accelarators */
static void channels_dialog_map_callback (GtkWidget *widget,
gpointer data);
static void channels_dialog_unmap_callback (GtkWidget *widget,
gpointer data);
/* ops buttons dnd callbacks */
static gboolean channels_dialog_drag_new_channel_callback
(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean channels_dialog_drag_duplicate_channel_callback
(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean channels_dialog_drag_channel_to_sel_callback
(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean channels_dialog_drag_delete_channel_callback
(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
/* channel widget function prototypes */
static ChannelWidget * channel_widget_get_ID (Channel *channel);
static ChannelWidget * channel_widget_create (GimpImage *gimage,
Channel *channel,
ChannelType channel_type);
static gboolean channel_widget_drag_motion_callback
(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean channel_widget_drag_drop_callback(GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void channel_widget_drag_begin_callback (GtkWidget *widget,
GdkDragContext *context);
static void channel_widget_drag_leave_callback (GtkWidget *widget,
GdkDragContext *context,
guint time);
static void channel_widget_drag_indicator_callback
(GtkWidget *widget,
gpointer data);
static void channel_widget_drop_color (GtkWidget *widget,
const GimpRGB *color,
gpointer data);
static void channel_widget_draw_drop_indicator (ChannelWidget *cw,
GimpDropType drop_type);
static void channel_widget_delete (ChannelWidget *cw);
static void channel_widget_select_update (GtkWidget *widget,
gpointer data);
static gint channel_widget_button_events (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static gint channel_widget_preview_events (GtkWidget *widget,
GdkEvent *event,
gpointer data);
static void channel_widget_preview_redraw (ChannelWidget *cw);
static void channel_widget_no_preview_redraw (ChannelWidget *cw);
static void channel_widget_eye_redraw (ChannelWidget *cw);
static void channel_widget_exclusive_visible (ChannelWidget *cw);
static void channel_widget_channel_flush (GtkWidget *widget,
gpointer data);
static void channels_dialog_opacity_update (GtkAdjustment *adjustment,
gpointer data);
static void channels_dialog_color_changed (GimpColorButton *button,
gpointer data);
/* assorted query dialogs */
static void channels_dialog_new_channel_query (GimpImage *gimage);
static void channels_dialog_edit_channel_query (ChannelWidget *cw);
/****************/
/* Local data */
/****************/
static ChannelsDialog *channelsD = NULL;
static GdkPixmap *eye_pixmap[] = { NULL, NULL, NULL };
static GdkPixmap *channel_pixmap[] = { NULL, NULL, NULL };
static gint suspend_gimage_notify = 0;
/* the ops buttons */
static GtkSignalFunc to_selection_ext_callbacks[] =
{
channels_dialog_add_channel_to_sel_callback, /* SHIFT */
channels_dialog_sub_channel_from_sel_callback, /* CTRL */
channels_dialog_intersect_channel_with_sel_callback, /* MOD1 */
channels_dialog_intersect_channel_with_sel_callback, /* SHIFT + CTRL */
};
static OpsButton channels_ops_buttons[] =
{
{ new_xpm, channels_dialog_new_channel_callback, NULL,
N_("New Channel"),
"channels/dialogs/new_channel.html",
NULL, 0 },
{ raise_xpm, channels_dialog_raise_channel_callback, NULL,
N_("Raise Channel"),
"channels/raise_channel.html",
NULL, 0 },
{ lower_xpm, channels_dialog_lower_channel_callback, NULL,
N_("Lower Channel"),
"channels/lower_channel.html",
NULL, 0 },
{ duplicate_xpm, channels_dialog_duplicate_channel_callback, NULL,
N_("Duplicate Channel"),
"channels/duplicate_channel.html",
NULL, 0 },
{ toselection_xpm, channels_dialog_channel_to_sel_callback,
to_selection_ext_callbacks,
N_("Channel to Selection \n"
"<Shift> Add "
"<Ctrl> Subtract "
"<Shift><Ctrl> Intersect"),
"channels/channel_to_selection.html",
NULL, 0 },
{ delete_xpm, channels_dialog_delete_channel_callback, NULL,
N_("Delete Channel"),
"channels/delete_channel.html",
NULL, 0 },
{ NULL, NULL, NULL, NULL, NULL, NULL, 0 }
};
/* dnd structures */
static GtkTargetEntry channel_color_target_table[] =
{
GIMP_TARGET_CHANNEL,
GIMP_TARGET_COLOR
};
static guint n_channel_color_targets = (sizeof (channel_color_target_table) /
sizeof (channel_color_target_table[0]));
static GtkTargetEntry channel_target_table[] =
{
GIMP_TARGET_CHANNEL
};
static guint n_channel_targets = (sizeof (channel_target_table) /
sizeof (channel_target_table[0]));
static GtkTargetEntry component_target_table[] =
{
GIMP_TARGET_COMPONENT
};
static guint n_component_targets = (sizeof (component_target_table) /
sizeof (component_target_table[0]));
/**************************************/
/* Public channels dialog functions */
/**************************************/
GtkWidget *
channels_dialog_create (void)
{
GtkWidget *vbox;
GtkWidget *button_box;
if (channelsD)
return channelsD->vbox;
channelsD = g_new (ChannelsDialog, 1);
channelsD->preview = NULL;
channelsD->gimage = NULL;
channelsD->active_channel = NULL;
channelsD->floating_sel = NULL;
channelsD->channel_widgets = NULL;
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 = gtk_event_box_new ();
gimp_help_set_help_data (channelsD->vbox, NULL,
"dialogs/channels/channels.html");
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (channelsD->vbox), vbox);
/* The channels commands pulldown menu */
menus_get_channels_menu (&channelsD->ops_menu, &channelsD->accel_group);
/* The channels listbox */
channelsD->scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (channelsD->scrolled_win),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_widget_set_usize (channelsD->scrolled_win, LIST_WIDTH, LIST_HEIGHT);
gtk_box_pack_start (GTK_BOX (vbox), channelsD->scrolled_win, TRUE, TRUE, 2);
channelsD->channel_list = gtk_list_new ();
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (channelsD->scrolled_win),
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 (channelsD->scrolled_win)));
GTK_WIDGET_UNSET_FLAGS (GTK_SCROLLED_WINDOW (channelsD->scrolled_win)->vscrollbar,
GTK_CAN_FOCUS);
gtk_widget_show (channelsD->channel_list);
gtk_widget_show (channelsD->scrolled_win);
/* The ops buttons */
button_box = ops_button_box_new (channels_ops_buttons, OPS_BUTTON_NORMAL);
gtk_box_pack_start (GTK_BOX (vbox), button_box, FALSE, FALSE, 2);
gtk_widget_show (button_box);
/* Drop to new */
gtk_drag_dest_set (channels_ops_buttons[0].widget,
GTK_DEST_DEFAULT_ALL,
channel_target_table, n_channel_targets,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (channels_ops_buttons[0].widget), "drag_drop",
GTK_SIGNAL_FUNC (channels_dialog_drag_new_channel_callback),
NULL);
/* Drop to duplicate */
gtk_drag_dest_set (channels_ops_buttons[3].widget,
GTK_DEST_DEFAULT_ALL,
channel_target_table, n_channel_targets,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (channels_ops_buttons[3].widget), "drag_drop",
GTK_SIGNAL_FUNC (channels_dialog_drag_duplicate_channel_callback),
NULL);
/* Drop to channel to selection */
gtk_drag_dest_set (channels_ops_buttons[4].widget,
GTK_DEST_DEFAULT_ALL,
channel_target_table, n_channel_targets,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (channels_ops_buttons[4].widget), "drag_drop",
GTK_SIGNAL_FUNC (channels_dialog_drag_channel_to_sel_callback),
NULL);
/* Drop to trahcan */
gtk_drag_dest_set (channels_ops_buttons[5].widget,
GTK_DEST_DEFAULT_ALL,
channel_target_table, n_channel_targets,
GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (channels_ops_buttons[5].widget), "drag_drop",
GTK_SIGNAL_FUNC (channels_dialog_drag_delete_channel_callback),
NULL);
/* 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);
gtk_widget_show (channelsD->vbox);
return channelsD->vbox;
}
void
channels_dialog_free (void)
{
ChannelWidget *cw;
GSList *list;
if (!channelsD)
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));
g_free (channelsD);
channelsD = NULL;
}
void
channels_dialog_update (GimpImage* gimage)
{
Channel *channel;
ChannelWidget *cw;
GSList *list;
GList *item_list;
if (!channelsD || channelsD->gimage == gimage)
return;
channelsD->gimage = gimage;
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;
/* 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 = gimp_image_base_type (gimage)))
{
case RGB:
cw = channel_widget_create (gimage, NULL, RED_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = RED_CHANNEL;
cw = channel_widget_create (gimage, NULL, GREEN_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[1] = GREEN_CHANNEL;
cw = channel_widget_create (gimage, NULL, BLUE_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[2] = BLUE_CHANNEL;
channelsD->num_components = 3;
break;
case GRAY:
cw = channel_widget_create (gimage, NULL, GRAY_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = GRAY_CHANNEL;
channelsD->num_components = 1;
break;
case INDEXED:
cw = channel_widget_create (gimage, NULL, INDEXED_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
channelsD->components[0] = INDEXED_CHANNEL;
channelsD->num_components = 1;
break;
}
/* The auxillary image channels */
for (list = gimage->channels; list; list = g_slist_next (list))
{
/* create a channel list item */
channel = (Channel *) list->data;
cw = channel_widget_create (gimage, channel, AUXILLARY_CHANNEL);
channelsD->channel_widgets = g_slist_append (channelsD->channel_widgets, cw);
item_list = g_list_append (item_list, cw->list_item);
}
/* 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_flush (void)
{
GimpImage *gimage;
Channel *channel;
ChannelWidget *cw;
GSList *list;
gint pos;
if (!channelsD || !(gimage = channelsD->gimage))
return;
/* Check if the gimage extents have changed */
if ((gimage->width != channelsD->gimage_width) ||
(gimage->height != channelsD->gimage_height) ||
(gimp_image_base_type (gimage) != channelsD->base_type))
{
channelsD->gimage = NULL;
channels_dialog_update (gimage);
}
else
{
/* Set all current channel widgets to visited = FALSE */
for (list = channelsD->channel_widgets; list; list = g_slist_next (list))
{
cw = (ChannelWidget *) list->data;
cw->visited = FALSE;
}
/* Add any missing channels */
for (list = gimage->channels; list; list = g_slist_next (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)
{
/* sets visited = TRUE */
channels_dialog_add_channel (channel);
}
else
cw->visited = TRUE;
}
/* 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_CHANNEL)
{
/* will only be true for auxillary channels */
channels_dialog_remove_channel (cw);
}
}
/* Switch positions of items if necessary */
pos = 0;
for (list = gimage->channels; list; list = g_slist_next (list))
{
channel = (Channel *) list->data;
channels_dialog_position_channel (channel, 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);
}
}
void
channels_dialog_clear (void)
{
if (!channelsD)
return;
suspend_gimage_notify++;
gtk_list_clear_items (GTK_LIST (channelsD->channel_list), 0, -1);
suspend_gimage_notify--;
channelsD->gimage = NULL;
}
static void
channels_dialog_preview_extents (void)
{
GimpImage *gimage;
g_return_if_fail (channelsD);
if (! (gimage = channelsD->gimage))
return;
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 = (gdouble) preview_size / (gdouble) gimage->width;
else
channelsD->ratio = (gdouble) preview_size / (gdouble) gimage->height;
if (preview_size)
{
channelsD->image_width = RINT (channelsD->ratio * gimage->width);
channelsD->image_height = RINT (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 (void)
{
ChannelWidget *cw;
gint fs_sens;
gint aux_sens;
cw = channel_widget_get_ID (channelsD->active_channel);
fs_sens = (channelsD->floating_sel != NULL);
if (cw)
aux_sens = (cw->type == AUXILLARY_CHANNEL);
else
aux_sens = FALSE;
#define SET_SENSITIVE(menu,condition) \
menus_set_sensitive ("<Channels>/" menu, (condition) != 0)
#define SET_OPS_SENSITIVE(button,condition) \
gtk_widget_set_sensitive (channels_ops_buttons[(button)].widget, \
(condition) != 0)
SET_SENSITIVE ("New Channel...", !fs_sens);
SET_OPS_SENSITIVE (0, !fs_sens);
SET_SENSITIVE ("Raise Channel", !fs_sens && aux_sens);
SET_OPS_SENSITIVE (1, !fs_sens && aux_sens);
SET_SENSITIVE ("Lower Channel", !fs_sens && aux_sens);
SET_OPS_SENSITIVE (2, !fs_sens && aux_sens);
SET_SENSITIVE ("Duplicate Channel", !fs_sens && aux_sens);
SET_OPS_SENSITIVE (3, !fs_sens && aux_sens);
SET_SENSITIVE ("Channel to Selection", aux_sens);
SET_OPS_SENSITIVE (4, aux_sens);
SET_SENSITIVE ("Add to Selection", aux_sens);
SET_SENSITIVE ("Subtract from Selection", aux_sens);
SET_SENSITIVE ("Intersect with Selection", aux_sens);
SET_SENSITIVE ("Delete Channel", !fs_sens && aux_sens);
SET_OPS_SENSITIVE (5, !fs_sens && aux_sens);
SET_SENSITIVE ("Edit Channel Attributes...", !fs_sens && aux_sens);
#undef SET_OPS_SENSITIVE
#undef SET_SENSITIVE
}
static gint
channels_dialog_idle_set_channel_focus (gpointer data)
{
gtk_widget_grab_focus (GTK_WIDGET (data));
return FALSE;
}
static void
channels_dialog_set_channel (ChannelWidget *channel_widget)
{
GtkStateType state;
gint 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_CHANNEL)
{
/* turn on the specified auxillary channel */
index = gimp_image_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);
/* let dnd finish it's work before setting the focus */
gtk_idle_add ((GtkFunction) channels_dialog_idle_set_channel_focus,
channel_widget->list_item);
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item),
channel_widget);
/* channels_dialog_scroll_index (index + channelsD->num_components); */
}
}
else
{
if (state != GTK_STATE_SELECTED)
{
gtk_object_set_user_data (GTK_OBJECT (channel_widget->list_item),
NULL);
switch (channel_widget->type)
{
case RED_CHANNEL:
case GRAY_CHANNEL:
case INDEXED_CHANNEL:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 0);
break;
case GREEN_CHANNEL:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 1);
break;
case BLUE_CHANNEL:
gtk_list_select_item (GTK_LIST (channelsD->channel_list), 2);
break;
case AUXILLARY_CHANNEL:
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);
/* channels_dialog_scroll_index (0); */
}
}
suspend_gimage_notify--;
}
static void
channels_dialog_unset_channel (ChannelWidget *channel_widget)
{
GtkStateType state;
gint 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_CHANNEL)
{
/* turn off the specified auxillary channel */
index = gimp_image_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_CHANNEL:
case GRAY_CHANNEL:
case INDEXED_CHANNEL:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 0);
break;
case GREEN_CHANNEL:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 1);
break;
case BLUE_CHANNEL:
gtk_list_unselect_item (GTK_LIST (channelsD->channel_list), 2);
break;
case AUXILLARY_CHANNEL:
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 (Channel *channel,
gint new_index)
{
ChannelWidget *channel_widget;
GList *list = NULL;
channel_widget = channel_widget_get_ID (channel);
if (!channelsD || !channel_widget)
return;
if ((new_index + channelsD->num_components) ==
g_slist_index (channelsD->channel_widgets, 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);
/* 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);
/* channels_dialog_scroll_index (new_index > 0 ? */
/* new_index + channelsD->num_components + 1 : */
/* channelsD->num_components); */
suspend_gimage_notify--;
}
static void
channels_dialog_add_channel (Channel *channel)
{
ChannelWidget *channel_widget;
GimpImage *gimage;
GList *item_list;
gint position;
if (!channelsD || !channel || !(gimage = channelsD->gimage))
return;
item_list = NULL;
channel_widget = channel_widget_create (gimage, channel, AUXILLARY_CHANNEL);
item_list = g_list_append (item_list, channel_widget->list_item);
position = gimp_image_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)
{
ChannelWidget *channel_widget;
GdkEventButton *bevent;
GtkWidget *event_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,
bevent->button, bevent->time);
return TRUE;
}
break;
case GDK_2BUTTON_PRESS:
if (channel_widget->type == AUXILLARY_CHANNEL)
channels_dialog_edit_channel_query (channel_widget);
return TRUE;
default:
break;
}
}
return FALSE;
}
/*******************************/
/* channels dialog callbacks */
/*******************************/
static void
channels_dialog_map_callback (GtkWidget *widget,
gpointer data)
{
if (! channelsD)
return;
gtk_window_add_accel_group (GTK_WINDOW (lc_dialog->shell),
channelsD->accel_group);
}
static void
channels_dialog_unmap_callback (GtkWidget *widget,
gpointer data)
{
if (! channelsD)
return;
gtk_window_remove_accel_group (GTK_WINDOW (lc_dialog->shell),
channelsD->accel_group);
}
/***********************************/
/* callbacks exported to menus.c */
/***********************************/
void
channels_dialog_new_channel_callback (GtkWidget *widget,
gpointer data)
{
if (!channelsD || channelsD->gimage == NULL)
return;
channels_dialog_new_channel_query (channelsD->gimage);
}
void
channels_dialog_raise_channel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if (gimage->active_channel != NULL)
{
gimp_image_raise_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
void
channels_dialog_lower_channel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if (gimage->active_channel != NULL)
{
gimp_image_lower_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
void
channels_dialog_duplicate_channel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
Channel *active_channel;
Channel *new_channel;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if ((active_channel = gimp_image_get_active_channel (gimage)))
{
new_channel = channel_copy (active_channel);
gimp_image_add_channel (gimage, new_channel, -1);
gdisplays_flush ();
}
}
void
channels_dialog_delete_channel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if (gimage->active_channel != NULL)
{
gimp_image_remove_channel (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
void
channels_dialog_channel_to_sel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if (gimage->active_channel != NULL)
{
gimage_mask_load (gimage, gimage->active_channel);
gdisplays_flush ();
}
}
void
channels_dialog_add_channel_to_sel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
Channel *active_channel;
Channel *new_channel;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if ((active_channel = gimp_image_get_active_channel (gimage)))
{
new_channel = channel_copy (gimp_image_get_mask (gimage));
channel_combine_mask (new_channel,
active_channel,
CHANNEL_OP_ADD,
0, 0); /* off x/y */
gimage_mask_load (gimage, new_channel);
channel_delete (new_channel);
gdisplays_flush ();
}
}
void
channels_dialog_sub_channel_from_sel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
Channel *active_channel;
Channel *new_channel;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if ((active_channel = gimp_image_get_active_channel (gimage)))
{
new_channel = channel_copy (gimp_image_get_mask (gimage));
channel_combine_mask (new_channel,
active_channel,
CHANNEL_OP_SUB,
0, 0); /* off x/y */
gimage_mask_load (gimage, new_channel);
channel_delete (new_channel);
gdisplays_flush ();
}
}
void
channels_dialog_intersect_channel_with_sel_callback (GtkWidget *widget,
gpointer data)
{
GimpImage *gimage;
Channel *active_channel;
Channel *new_channel;
if (!channelsD || !(gimage = channelsD->gimage))
return;
if ((active_channel = gimp_image_get_active_channel (gimage)))
{
new_channel = channel_copy (gimp_image_get_mask (gimage));
channel_combine_mask (new_channel,
active_channel,
CHANNEL_OP_INTERSECT,
0, 0); /* off x/y */
gimage_mask_load (gimage, new_channel);
channel_delete (new_channel);
gdisplays_flush ();
}
}
void
channels_dialog_edit_channel_attributes_callback (GtkWidget *widget,
gpointer data)
{
if (channelsD && channelsD->active_channel)
{
ChannelWidget *channel_widget;
channel_widget = channel_widget_get_ID (channelsD->active_channel);
channels_dialog_edit_channel_query (channel_widget);
}
}
/*******************************/
/* ops buttons dnd callbacks */
/*******************************/
static gboolean
channels_dialog_drag_new_channel_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkWidget *src_widget;
gboolean return_val = FALSE;
if ((src_widget = gtk_drag_get_source_widget (context)))
{
ChannelWidget *src;
src
= (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
Channel *channel;
GimpImage *gimage;
gint width, height;
gint off_x, off_y;
gimage = channelsD->gimage;
width = gimp_drawable_width (GIMP_DRAWABLE (src->channel));
height = gimp_drawable_height (GIMP_DRAWABLE (src->channel));
gimp_drawable_offsets (GIMP_DRAWABLE (src->channel), &off_x, &off_y);
/* Start a group undo */
undo_push_group_start (gimage, EDIT_PASTE_UNDO);
channel = channel_new (gimage, width, height,
_("Empty Channel Copy"),
&src->channel->color);
if (channel)
{
drawable_fill (GIMP_DRAWABLE (channel), TRANSPARENT_FILL);
channel_translate (channel, off_x, off_y);
gimp_image_add_channel (gimage, channel, -1);
/* End the group undo */
undo_push_group_end (gimage);
gdisplays_flush ();
}
else
{
g_message ("channels_dialog_drop_new_channel_callback():\n"
"could not allocate new channel");
}
return_val = TRUE;
}
}
gtk_drag_finish (context, return_val, FALSE, time);
return return_val;
}
static gboolean
channels_dialog_drag_duplicate_channel_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkWidget *src_widget;
gboolean return_val = FALSE;
if ((src_widget = gtk_drag_get_source_widget (context)))
{
ChannelWidget *src;
src
= (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
channels_dialog_duplicate_channel_callback (widget, NULL);
return_val = TRUE;
}
}
gtk_drag_finish (context, return_val, FALSE, time);
return return_val;
}
static gboolean
channels_dialog_drag_channel_to_sel_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkWidget *src_widget;
gboolean return_val = FALSE;
if ((src_widget = gtk_drag_get_source_widget (context)))
{
ChannelWidget *src;
src
= (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
channels_dialog_channel_to_sel_callback (widget, NULL);
return_val = TRUE;
}
}
gtk_drag_finish (context, return_val, FALSE, time);
return return_val;
}
static gboolean
channels_dialog_drag_delete_channel_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkWidget *src_widget;
gboolean return_val = FALSE;
if ((src_widget = gtk_drag_get_source_widget (context)))
{
ChannelWidget *src;
src
= (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
channels_dialog_delete_channel_callback (widget, NULL);
return_val = TRUE;
}
}
gtk_drag_finish (context, return_val, FALSE, time);
return return_val;
}
/******************************/
/* channel widget functions */
/******************************/
static ChannelWidget *
channel_widget_get_ID (Channel *channel)
{
ChannelWidget *lw;
GSList *list;
if (!channelsD)
return NULL;
for (list = channelsD->channel_widgets; list; list = g_slist_next (list))
{
lw = (ChannelWidget *) list->data;
if (lw->channel == channel)
return lw;
}
return NULL;
}
static ChannelWidget *
channel_widget_create (GimpImage *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 = g_new (ChannelWidget, 1);
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_CHANNEL) ?
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;
channel_widget->drop_type = GIMP_DROP_NONE;
/* 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",
GTK_SIGNAL_FUNC (channel_widget_select_update),
channel_widget);
gtk_signal_connect (GTK_OBJECT (list_item), "deselect",
GTK_SIGNAL_FUNC (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",
GTK_SIGNAL_FUNC (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 channel 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",
GTK_SIGNAL_FUNC (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:
channel_widget->label = gtk_label_new (_("Red"));
break;
case GREEN_CHANNEL:
channel_widget->label = gtk_label_new (_("Green"));
break;
case BLUE_CHANNEL:
channel_widget->label = gtk_label_new (_("Blue"));
break;
case GRAY_CHANNEL:
channel_widget->label = gtk_label_new (_("Gray"));
break;
case INDEXED_CHANNEL:
channel_widget->label = gtk_label_new (_("Indexed"));
break;
case AUXILLARY_CHANNEL:
channel_widget->label =
gtk_label_new (gimp_object_get_name (GIMP_OBJECT (channel)));
break;
}
gtk_box_pack_start (GTK_BOX (hbox), channel_widget->label, FALSE, FALSE, 2);
gtk_widget_show (channel_widget->label);
if (channel_widget->type == AUXILLARY_CHANNEL)
{
/* dnd destination */
gtk_drag_dest_set (list_item,
GTK_DEST_DEFAULT_ALL,
channel_color_target_table, n_channel_color_targets,
GDK_ACTION_MOVE | GDK_ACTION_COPY);
gimp_dnd_color_dest_set (list_item,
channel_widget_drop_color,
(gpointer) channel_widget);
gtk_signal_connect (GTK_OBJECT (list_item), "drag_leave",
GTK_SIGNAL_FUNC (channel_widget_drag_leave_callback),
NULL);
gtk_signal_connect (GTK_OBJECT (list_item), "drag_motion",
GTK_SIGNAL_FUNC (channel_widget_drag_motion_callback),
NULL);
gtk_signal_connect (GTK_OBJECT (list_item), "drag_drop",
GTK_SIGNAL_FUNC (channel_widget_drag_drop_callback),
NULL);
/* re-paint the drop indicator after drawing the widget */
gtk_signal_connect_after (GTK_OBJECT (list_item), "draw",
GTK_SIGNAL_FUNC (channel_widget_drag_indicator_callback),
channel_widget);
/* dnd source */
gtk_drag_source_set (list_item,
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
channel_target_table, n_channel_targets,
GDK_ACTION_MOVE | GDK_ACTION_COPY);
gtk_signal_connect (GTK_OBJECT (list_item), "drag_begin",
GTK_SIGNAL_FUNC (channel_widget_drag_begin_callback),
NULL);
gtk_object_set_data (GTK_OBJECT (list_item), "gimp_channel",
(gpointer) channel);
}
else
{
/* dnd source */
gtk_drag_source_set (list_item,
GDK_BUTTON1_MASK | GDK_BUTTON2_MASK,
component_target_table, n_component_targets,
GDK_ACTION_MOVE | GDK_ACTION_COPY);
gtk_object_set_data (GTK_OBJECT (list_item), "gimp_component",
(gpointer) gimage);
gtk_object_set_data (GTK_OBJECT (list_item), "gimp_component_type",
(gpointer) channel_widget->type);
}
gtk_widget_show (hbox);
gtk_widget_show (vbox);
gtk_widget_show (list_item);
gtk_widget_ref (channel_widget->list_item);
return channel_widget;
}
static gboolean
channel_widget_drag_motion_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
ChannelWidget *dest;
gint dest_index;
GtkWidget *src_widget;
ChannelWidget *src = NULL;
gint src_index;
gint difference;
GimpDropType drop_type = GIMP_DROP_NONE;
GdkDragAction drag_action = GDK_ACTION_DEFAULT;
gboolean return_val = FALSE;
dest = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
if (dest)
{
src_widget = gtk_drag_get_source_widget (context);
if (src_widget)
{
src = (ChannelWidget *)
gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
src_index = gimp_image_get_channel_index (channelsD->gimage,
src->channel);
dest_index = gimp_image_get_channel_index (channelsD->gimage,
dest->channel);
difference = dest_index - src_index;
drop_type = ((y < widget->allocation.height / 2) ?
GIMP_DROP_ABOVE : GIMP_DROP_BELOW);
if (difference < 0 &&
drop_type == GIMP_DROP_BELOW)
{
dest_index++;
}
else if (difference > 0 &&
drop_type == GIMP_DROP_ABOVE)
{
dest_index--;
}
if (src_index != dest_index)
{
drag_action = GDK_ACTION_MOVE;
return_val = TRUE;
}
else
{
drop_type = GIMP_DROP_NONE;
}
}
}
if (!src)
{
drag_action = GDK_ACTION_COPY;
return_val = TRUE;
drop_type = GIMP_DROP_NONE;
}
}
gdk_drag_status (context, drag_action, time);
if (dest && drop_type != dest->drop_type)
{
channel_widget_draw_drop_indicator (dest, dest->drop_type);
channel_widget_draw_drop_indicator (dest, drop_type);
dest->drop_type = drop_type;
}
return return_val;
}
static void
channel_widget_drag_begin_callback (GtkWidget *widget,
GdkDragContext *context)
{
ChannelWidget *channel_widget;
channel_widget =
(ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
gimp_dnd_set_drawable_preview_icon (widget, context,
GIMP_DRAWABLE (channel_widget->channel));
}
typedef struct
{
GimpImage *gimage;
Channel *channel;
gint dest_index;
} ChannelDrop;
static gint
channel_widget_idle_drop_channel (gpointer data)
{
ChannelDrop *cd;
cd = (ChannelDrop *) data;
gimp_image_position_channel (cd->gimage, cd->channel, cd->dest_index);
gdisplays_flush ();
g_free (cd);
return FALSE;
}
static gboolean
channel_widget_drag_drop_callback (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
ChannelWidget *dest;
gint dest_index;
GtkWidget *src_widget;
ChannelWidget *src;
gint src_index;
gint difference;
GimpDropType drop_type = GIMP_DROP_NONE;
gboolean return_val = FALSE;
dest = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
if (dest &&
(src_widget = gtk_drag_get_source_widget (context)))
{
src = (ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (src_widget));
if (src &&
src->channel == channelsD->active_channel)
{
src_index = gimp_image_get_channel_index (channelsD->gimage,
src->channel);
dest_index = gimp_image_get_channel_index (channelsD->gimage,
dest->channel);
difference = dest_index - src_index;
drop_type = ((y < widget->allocation.height / 2) ?
GIMP_DROP_ABOVE : GIMP_DROP_BELOW);
if (difference < 0 &&
drop_type == GIMP_DROP_BELOW)
{
dest_index++;
}
else if (difference > 0 &&
drop_type == GIMP_DROP_ABOVE)
{
dest_index--;
}
if (src_index != dest_index)
{
ChannelDrop *cd;
cd = g_new (ChannelDrop, 1);
cd->gimage = channelsD->gimage;
cd->channel = src->channel;
cd->dest_index = dest_index;
/* let dnd finish it's work before changing the widget tree */
gtk_idle_add ((GtkFunction) channel_widget_idle_drop_channel, cd);
return_val = TRUE;
}
}
}
if (dest)
{
if (!return_val)
channel_widget_draw_drop_indicator (dest, dest->drop_type);
dest->drop_type = GIMP_DROP_NONE;
}
gtk_drag_finish (context, return_val, FALSE, time);
return return_val;
}
static void
channel_widget_drag_leave_callback (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
ChannelWidget *channel_widget;
channel_widget =
(ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
channel_widget->drop_type = GIMP_DROP_NONE;
}
static void
channel_widget_drag_indicator_callback (GtkWidget *widget,
gpointer data)
{
ChannelWidget *channel_widget;
channel_widget =
(ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
channel_widget_draw_drop_indicator (channel_widget, channel_widget->drop_type);
}
static void
channel_widget_drop_color (GtkWidget *widget,
const GimpRGB *color,
gpointer data)
{
ChannelWidget *channel_widget;
Channel *channel;
channel_widget = (ChannelWidget *) data;
channel = channel_widget->channel;
if (gimp_rgba_distance (color, &channel->color) > 0.0001)
{
channel->color = *color;
drawable_update (GIMP_DRAWABLE (channel), 0, 0,
GIMP_DRAWABLE (channel)->width,
GIMP_DRAWABLE (channel)->height);
gdisplays_flush ();
}
}
static void
channel_widget_draw_drop_indicator (ChannelWidget *channel_widget,
GimpDropType drop_type)
{
static GdkGC *gc = NULL;
gint y = 0;
if (!gc)
{
GdkColor fg, bg;
gc = gdk_gc_new (channel_widget->list_item->window);
fg.pixel = 0xFFFFFFFF;
bg.pixel = 0x00000000;
gdk_gc_set_function (gc, GDK_INVERT);
gdk_gc_set_foreground (gc, &fg);
gdk_gc_set_background (gc, &bg);
gdk_gc_set_line_attributes (gc, 5, GDK_LINE_SOLID,
GDK_CAP_BUTT, GDK_JOIN_MITER);
}
if (drop_type != GIMP_DROP_NONE)
{
y = ((drop_type == GIMP_DROP_ABOVE) ?
3 : channel_widget->list_item->allocation.height - 4);
gdk_draw_line (channel_widget->list_item->window, gc,
2, y, channel_widget->list_item->allocation.width - 3, y);
}
}
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 *widget,
gpointer data)
{
ChannelWidget *channel_widget;
if ((channel_widget = (ChannelWidget *) data) == NULL)
return;
if (suspend_gimage_notify == 0)
{
if (channel_widget->type == AUXILLARY_CHANNEL)
{
if (widget->state == GTK_STATE_SELECTED)
/* set the gimage's active channel to be this channel */
gimp_image_set_active_channel (channel_widget->gimage,
channel_widget->channel);
else
/* unset the gimage's active channel */
gimp_image_unset_active_channel (channel_widget->gimage);
gdisplays_flush ();
}
else if (channel_widget->type != AUXILLARY_CHANNEL)
{
if (widget->state == GTK_STATE_SELECTED)
gimp_image_set_component_active (channel_widget->gimage,
channel_widget->type, TRUE);
else
gimp_image_set_component_active (channel_widget->gimage,
channel_widget->type, FALSE);
}
}
}
static gint
channel_widget_button_events (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
ChannelWidget *channel_widget;
GtkWidget *event_widget;
GdkEventButton *bevent;
gint return_val;
gint visible;
gint width, height;
static gboolean button_down = FALSE;
static GtkWidget *click_widget = NULL;
static gint old_state;
static gint exclusive;
channel_widget =
(ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
return_val = FALSE;
switch (channel_widget->type)
{
case AUXILLARY_CHANNEL:
visible = GIMP_DRAWABLE (channel_widget->channel)->visible;
width = GIMP_DRAWABLE (channel_widget->channel)->width;
height = GIMP_DRAWABLE (channel_widget->channel)->height;
break;
default:
visible = gimp_image_get_component_visible (channel_widget->gimage,
channel_widget->type);
width = channel_widget->gimage->width;
height = channel_widget->gimage->height;
break;
}
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 = TRUE;
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_CHANNEL)
GIMP_DRAWABLE (channel_widget->channel)->visible = !visible;
else
gimp_image_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 = FALSE;
gtk_grab_remove (click_widget);
if (widget == channel_widget->eye_widget)
{
if (exclusive)
{
gdisplays_update_area (channel_widget->gimage, 0, 0, width, height);
gdisplays_flush ();
}
else if (old_state != visible)
{
gdisplays_update_area (channel_widget->gimage, 0, 0, width, height);
gdisplays_flush ();
}
}
break;
case GDK_LEAVE_NOTIFY:
event_widget = gtk_get_event_widget (event);
if (button_down && (event_widget == click_widget))
{
/* the user moved the cursor out of the widget before
releasing the button -> cancel the button_press */
button_down = FALSE;
if (widget == channel_widget->eye_widget)
{
if (exclusive)
{
channel_widget_exclusive_visible (channel_widget);
}
else
{
if (channel_widget->type == AUXILLARY_CHANNEL)
GIMP_DRAWABLE (channel_widget->channel)->visible = !visible;
else
gimp_image_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,
gpointer data)
{
ChannelWidget *channel_widget;
GdkEventExpose *eevent;
GdkEventButton *bevent;
gboolean valid;
valid = FALSE;
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_CHANNEL:
valid = GIMP_DRAWABLE (channel_widget->channel)->preview_valid;
break;
default:
valid = gimp_image_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;
gint width, height;
gint 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_CHANNEL:
width = GIMP_DRAWABLE (channel_widget->channel)->width;
height = GIMP_DRAWABLE (channel_widget->channel)->height;
channel_widget->width = RINT (channelsD->ratio * width);
channel_widget->height = RINT (channelsD->ratio * height);
if (channelsD->ratio > 1.0) /* Preview is scaling up! */
{
preview_buf = channel_preview (channel_widget->channel,
channelsD->gimage_width,
channelsD->gimage_height);
preview_buf = gimp_preview_scale (preview_buf,
channel_widget->width,
channel_widget->height);
}
else
{
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 = RINT (channelsD->ratio * width);
channel_widget->height = RINT (channelsD->ratio * height);
if (channelsD->ratio > 1.0) /* Preview is scaling up! */
{
preview_buf = gimp_image_composite_preview (channel_widget->gimage,
channel_widget->type,
width,
height);
preview_buf = gimp_preview_scale (preview_buf,
channel_widget->width,
channel_widget->height);
}
else
{
preview_buf = gimp_image_composite_preview (channel_widget->gimage,
channel_widget->type,
channel_widget->width,
channel_widget->height);
}
break;
}
switch (channel_widget->type)
{
case RED_CHANNEL: channel = RED_PIX; break;
case GREEN_CHANNEL: channel = GREEN_PIX; break;
case BLUE_CHANNEL: channel = BLUE_PIX; break;
case GRAY_CHANNEL: channel = GRAY_PIX; break;
case INDEXED_CHANNEL: channel = INDEXED_PIX; break;
case AUXILLARY_CHANNEL: 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 ();
if (channelsD->ratio > 1.0)
temp_buf_free (preview_buf);
}
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;
gint width, height;
state = channel_widget->list_item->state;
pixmap_normal = &channel_pixmap[NORMAL];
pixmap_selected = &channel_pixmap[SELECTED];
pixmap_insensitive = &channel_pixmap[INSENSITIVE];
widget = channel_widget->channel_preview;
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;
gboolean 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_CHANNEL:
visible = GIMP_DRAWABLE (channel_widget->channel)->visible;
break;
default:
visible = gimp_image_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;
gboolean visible = FALSE;
if (!channelsD)
return;
/* First determine if _any_ other channel widgets are set to visible */
for (list = channelsD->channel_widgets; list; list = g_slist_next (list))
{
cw = (ChannelWidget *) list->data;
if (cw != channel_widget)
{
switch (cw->type)
{
case AUXILLARY_CHANNEL:
visible |= GIMP_DRAWABLE (cw->channel)->visible;
break;
default:
visible |= gimp_image_get_component_visible (cw->gimage, cw->type);
break;
}
}
}
/* Now, toggle the visibility for all channels except the specified one */
for (list = channelsD->channel_widgets; list; list = g_slist_next (list))
{
cw = (ChannelWidget *) list->data;
if (cw != channel_widget)
switch (cw->type)
{
case AUXILLARY_CHANNEL:
GIMP_DRAWABLE (cw->channel)->visible = !visible;
break;
default:
gimp_image_set_component_visible (cw->gimage, cw->type, !visible);
break;
}
else
switch (cw->type)
{
case AUXILLARY_CHANNEL:
GIMP_DRAWABLE (cw->channel)->visible = TRUE;
break;
default:
gimp_image_set_component_visible (cw->gimage, cw->type, TRUE);
break;
}
channel_widget_eye_redraw (cw);
}
}
static void
channel_widget_channel_flush (GtkWidget *widget,
gpointer data)
{
ChannelWidget *channel_widget;
gboolean update_preview = FALSE;
channel_widget =
(ChannelWidget *) gtk_object_get_user_data (GTK_OBJECT (widget));
/* Set 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_CHANNEL)
{
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_CHANNEL &&
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);
}
}
/* Set selection */
/* If this is an auxillary channel */
if (channel_widget->type == AUXILLARY_CHANNEL)
{
/* 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 (gimp_image_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_CHANNEL:
update_preview = !GIMP_DRAWABLE (channel_widget->channel)->preview_valid;
break;
default:
update_preview = !gimp_image_preview_valid (channel_widget->gimage,
channel_widget->type);
break;
}
if (update_preview)
gtk_widget_queue_draw (channel_widget->channel_preview);
}
static void
channels_dialog_opacity_update (GtkAdjustment *adjustment,
gpointer data)
{
GimpRGB color;
gimp_color_button_get_color (GIMP_COLOR_BUTTON (data), &color);
gimp_rgb_set_alpha (&color, adjustment->value / 100.0);
gimp_color_button_set_color (GIMP_COLOR_BUTTON (data), &color);
}
static void
channels_dialog_color_changed (GimpColorButton *button,
gpointer data)
{
GtkAdjustment *adj = GTK_ADJUSTMENT (data);
GimpRGB color;
gimp_color_button_get_color (button, &color);
gtk_adjustment_set_value (adj, color.a * 100.0);
}
/**********************************/
/* The new channel query dialog */
/**********************************/
typedef struct _NewChannelOptions NewChannelOptions;
struct _NewChannelOptions
{
GtkWidget *query_box;
GtkWidget *name_entry;
GtkWidget *color_panel;
GimpImage *gimage;
};
static gchar *channel_name = NULL;
static GimpRGB channel_color = { 0.0, 0.0, 0.0, 0.5 };
static void
new_channel_query_ok_callback (GtkWidget *widget,
gpointer data)
{
NewChannelOptions *options;
Channel *new_channel;
GimpImage *gimage;
options = (NewChannelOptions *) data;
if (channel_name)
g_free (channel_name);
channel_name = g_strdup (gtk_entry_get_text (GTK_ENTRY (options->name_entry)));
if ((gimage = options->gimage))
{
gimp_color_button_get_color (GIMP_COLOR_BUTTON (options->color_panel),
&channel_color);
new_channel = channel_new (gimage, gimage->width, gimage->height,
channel_name,
&channel_color);
drawable_fill (GIMP_DRAWABLE (new_channel), TRANSPARENT_FILL);
gimp_image_add_channel (gimage, new_channel, -1);
gdisplays_flush ();
}
gtk_widget_destroy (options->query_box);
}
static void
channels_dialog_new_channel_query (GimpImage* gimage)
{
NewChannelOptions *options;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *opacity_scale;
GtkObject *opacity_scale_data;
/* the new options structure */
options = g_new (NewChannelOptions, 1);
options->gimage = gimage;
options->color_panel = gimp_color_panel_new (_("New Channel Color"),
&channel_color,
GIMP_COLOR_AREA_LARGE_CHECKS,
48, 64);
/* The dialog */
options->query_box =
gimp_dialog_new (_("New Channel Options"), "new_channel_options",
gimp_standard_help_func,
"dialogs/channels/new_channel.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), new_channel_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect_object (GTK_OBJECT (options->query_box), "destroy",
GTK_SIGNAL_FUNC (g_free),
(GtkObject *) options);
/* The main hbox */
hbox = gtk_hbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
hbox);
/* The vbox */
vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
/* The table */
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* The name entry hbox, label and entry */
label = gtk_label_new (_("Channel name:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_widget_set_usize (options->name_entry, 150, 0);
gtk_table_attach_defaults (GTK_TABLE (table), options->name_entry,
1, 2, 0, 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), 1.0, 1.0);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_SHRINK | GTK_FILL, GTK_SHRINK | GTK_FILL, 0, 0);
gtk_widget_show (label);
opacity_scale_data =
gtk_adjustment_new (channel_color.a * 100.0, 0.0, 100.0, 1.0, 1.0, 0.0);
opacity_scale = gtk_hscale_new (GTK_ADJUSTMENT (opacity_scale_data));
gtk_table_attach_defaults (GTK_TABLE (table), opacity_scale, 1, 2, 1, 2);
gtk_scale_set_value_pos (GTK_SCALE (opacity_scale), GTK_POS_TOP);
gtk_signal_connect (GTK_OBJECT (opacity_scale_data), "value_changed",
GTK_SIGNAL_FUNC (channels_dialog_opacity_update),
options->color_panel);
gtk_widget_show (opacity_scale);
/* The color panel */
gtk_signal_connect (GTK_OBJECT (options->color_panel), "color_changed",
channels_dialog_color_changed,
opacity_scale_data);
gtk_box_pack_start (GTK_BOX (hbox), options->color_panel,
TRUE, TRUE, 0);
gtk_widget_show (options->color_panel);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (hbox);
gtk_widget_show (options->query_box);
}
/****************************************/
/* The edit channel attributes dialog */
/****************************************/
typedef struct _EditChannelOptions EditChannelOptions;
struct _EditChannelOptions
{
GtkWidget *query_box;
GtkWidget *name_entry;
GtkWidget *color_panel;
ChannelWidget *channel_widget;
GimpImage *gimage;
};
static void
edit_channel_query_ok_callback (GtkWidget *widget,
gpointer data)
{
EditChannelOptions *options;
Channel *channel;
GimpRGB color;
options = (EditChannelOptions *) data;
channel = options->channel_widget->channel;
if (options->gimage)
{
/* Set the new channel name */
gimp_object_set_name (GIMP_OBJECT (channel),
gtk_entry_get_text (GTK_ENTRY (options->name_entry)));
gtk_label_set_text (GTK_LABEL (options->channel_widget->label),
gimp_object_get_name (GIMP_OBJECT (channel)));
gimp_color_button_get_color (GIMP_COLOR_BUTTON (options->color_panel),
&color);
if (gimp_rgba_distance (&color, &channel->color) > 0.0001)
{
channel->color = color;
drawable_update (GIMP_DRAWABLE (channel), 0, 0,
GIMP_DRAWABLE (channel)->width,
GIMP_DRAWABLE (channel)->height);
gdisplays_flush ();
}
}
gtk_widget_destroy (options->query_box);
}
static void
channels_dialog_edit_channel_query (ChannelWidget *channel_widget)
{
EditChannelOptions *options;
GtkWidget *hbox;
GtkWidget *vbox;
GtkWidget *table;
GtkWidget *label;
GtkWidget *opacity_scale;
GtkObject *opacity_scale_data;
/* the new options structure */
options = g_new (EditChannelOptions, 1);
options->channel_widget = channel_widget;
options->gimage = channel_widget->gimage;
channel_color = channel_widget->channel->color;
options->color_panel = gimp_color_panel_new (_("Edit Channel Color"),
&channel_color,
GIMP_COLOR_AREA_LARGE_CHECKS,
48, 64);
/* The dialog */
options->query_box =
gimp_dialog_new (_("Edit Channel Attributes"), "edit_channel_attributes",
gimp_standard_help_func,
"dialogs/channels/edit_channel_attributes.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, FALSE,
_("OK"), edit_channel_query_ok_callback,
options, NULL, NULL, TRUE, FALSE,
_("Cancel"), gtk_widget_destroy,
NULL, 1, NULL, FALSE, TRUE,
NULL);
gtk_signal_connect_object (GTK_OBJECT (options->query_box), "destroy",
GTK_SIGNAL_FUNC (g_free),
(GtkObject *) options);
/* The main hbox */
hbox = gtk_hbox_new (FALSE, 2);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 4);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (options->query_box)->vbox),
hbox);
/* The vbox */
vbox = gtk_vbox_new (FALSE, 2);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
/* The table */
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
gtk_table_set_row_spacings (GTK_TABLE (table), 2);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0);
/* The name entry */
label = gtk_label_new (_("Channel name:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 0.5);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (label);
options->name_entry = gtk_entry_new ();
gtk_widget_set_usize (options->name_entry, 150, 0);
gtk_table_attach_defaults (GTK_TABLE (table), options->name_entry,
1, 2, 0, 1);
gtk_entry_set_text
(GTK_ENTRY (options->name_entry),
gimp_object_get_name (GIMP_OBJECT (channel_widget->channel)));
gtk_widget_show (options->name_entry);
/* The opacity scale */
label = gtk_label_new (_("Fill Opacity:"));
gtk_misc_set_alignment (GTK_MISC (label), 1.0, 1.0);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_show (label);
opacity_scale_data =
gtk_adjustment_new (channel_color.a * 100.0, 0.0, 100.0, 1.0, 1.0, 0.0);
opacity_scale = gtk_hscale_new (GTK_ADJUSTMENT (opacity_scale_data));
gtk_table_attach_defaults (GTK_TABLE (table), opacity_scale, 1, 2, 1, 2);
gtk_scale_set_value_pos (GTK_SCALE (opacity_scale), GTK_POS_TOP);
gtk_signal_connect (GTK_OBJECT (opacity_scale_data), "value_changed",
GTK_SIGNAL_FUNC (channels_dialog_opacity_update),
options->color_panel);
gtk_widget_show (opacity_scale);
/* The color panel */
gtk_signal_connect (GTK_OBJECT (options->color_panel), "color_changed",
channels_dialog_color_changed,
opacity_scale_data);
gtk_box_pack_start (GTK_BOX (hbox), options->color_panel,
TRUE, TRUE, 0);
gtk_widget_show (options->color_panel);
gtk_widget_show (table);
gtk_widget_show (vbox);
gtk_widget_show (hbox);
gtk_widget_show (options->query_box);
}
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