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gimp/app/gradient_select.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
* Copyright (C) 1998 Andy Thomas.
*
* Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
* federico@nuclecu.unam.mx
*
* 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 PURIGHTE. 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.
*/
/* This is the popup for the gradient selection stuff..
* idea is a cut down version of the gradient selection widget
* just a clist on which each gradient can be selected.
* Of course all the support functions for getting the slected gradient and
* setting the slection all need to be done as well.
*/
/* Main structure for the dialog. There can be multiple of these
* so every thing has to go into the strcuture and we have to have a list
* the structures so we can find which one we are taking about.
*/
#include "config.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "appenv.h"
#include "colormaps.h"
#include "cursorutil.h"
#include "datafiles.h"
#include "errors.h"
#include "general.h"
#include "gimprc.h"
#include "gradient.h"
#include "gradient_header.h"
#include "indicator_area.h"
#include "interface.h"
#include "palette.h"
#include "session.h"
#include "actionarea.h"
#include "dialog_handler.h"
#include "libgimp/gimpintl.h"
GSList *grad_active_dialogs = NULL; /* List of active dialogs */
GradSelectP gradient_select_dialog = NULL; /* The main selection dialog */
static void grad_select_close_callback (GtkWidget *, gpointer);
static void grad_select_edit_callback (GtkWidget *, gpointer);
static void grad_change_callbacks(GradSelectP gsp, gint closing);
extern void import_palette_grad_update(gradient_t *); /* ALT Hmm... */
static ActionAreaItem action_items[2] =
{
{ N_("Edit"), grad_select_edit_callback, NULL, NULL },
{ N_("Close"), grad_select_close_callback, NULL, NULL }
};
void
grad_free_gradient_editor(void)
{
if (gradient_select_dialog)
session_get_window_info (gradient_select_dialog->shell, &gradient_select_session_info);
} /* grad_free_gradient_editor */
void
grad_sel_rename_all(gint n, gradient_t *grad)
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_set_text(GTK_CLIST(gsp->clist),n,1,grad->name);
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gtk_clist_set_text(GTK_CLIST(gradient_select_dialog->clist),n,1,grad->name);
}
}
void
grad_sel_new_all(gint pos, gradient_t *grad)
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_freeze(GTK_CLIST(gsp->clist));
ed_insert_in_gradients_listbox(gsp->gc,gsp->clist,grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(gsp->clist));
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gtk_clist_freeze(GTK_CLIST(gradient_select_dialog->clist));
ed_insert_in_gradients_listbox(gradient_select_dialog->gc,gradient_select_dialog->clist,grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(gradient_select_dialog->clist));
}
}
void
grad_sel_copy_all(gint pos, gradient_t *grad)
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_freeze(GTK_CLIST(gsp->clist));
ed_insert_in_gradients_listbox(gsp->gc,gsp->clist,grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(gsp->clist));
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gtk_clist_freeze(GTK_CLIST(gradient_select_dialog->clist));
ed_insert_in_gradients_listbox(gradient_select_dialog->gc,gradient_select_dialog->clist,grad, pos, 1);
gtk_clist_thaw(GTK_CLIST(gradient_select_dialog->clist));
}
}
void
grad_sel_delete_all(gint n)
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_remove(GTK_CLIST(gsp->clist), n);
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gtk_clist_remove(GTK_CLIST(gradient_select_dialog->clist), n);
}
}
void
grad_sel_free_all()
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_freeze(GTK_CLIST(gsp->clist));
gtk_clist_clear(GTK_CLIST(gsp->clist));
gtk_clist_thaw(GTK_CLIST(gsp->clist));
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gtk_clist_freeze(GTK_CLIST(gradient_select_dialog->clist));
gtk_clist_clear(GTK_CLIST(gradient_select_dialog->clist));
gtk_clist_thaw(GTK_CLIST(gradient_select_dialog->clist));
}
}
void
grad_sel_refill_all()
{
GSList *list = grad_active_dialogs;
GradSelectP gsp;
int select_pos = -1;
while(list)
{
gsp = (GradSelectP)list->data;
gsp->grad = curr_gradient;
select_pos = ed_set_list_of_gradients(gsp->gc,
gsp->clist,
curr_gradient);
if(select_pos != -1)
gtk_clist_moveto(GTK_CLIST(gsp->clist),select_pos,0,0.0,0.0);
list = g_slist_next(list);
}
if(gradient_select_dialog)
{
gradient_select_dialog->grad = curr_gradient;
select_pos = ed_set_list_of_gradients(gradient_select_dialog->gc,
gradient_select_dialog->clist,
curr_gradient);
if(select_pos != -1)
gtk_clist_moveto(GTK_CLIST(gradient_select_dialog->clist),select_pos,0,0.0,0.0);
}
}
void
sel_update_dialogs(gint row, gradient_t *grad)
{
/* Go around each updating the names and hopefully the previews */
GSList *list = grad_active_dialogs;
GradSelectP gsp;
while(list)
{
gsp = (GradSelectP)list->data;
gtk_clist_set_text(GTK_CLIST(gsp->clist),row,1,grad->name);
/* Are we updating one that is selected in a popup dialog? */
if(grad == gsp->grad)
grad_change_callbacks(gsp, 0);
list = g_slist_next(list);
}
if(gradient_select_dialog)
gtk_clist_set_text(GTK_CLIST(gradient_select_dialog->clist),row,1,grad->name);
gradient_area_update (); /* update the indicator_area */
import_palette_grad_update(grad);
}
static void
sel_list_item_update(GtkWidget *widget,
gint row,
gint column,
GdkEventButton *event,
gpointer data)
{
GradSelectP gsp = (GradSelectP)data;
GSList* tmp = g_slist_nth(gradients_list,row);
gsp->grad = (gradient_t *)(tmp->data);
/* If main one then make it the current selection */
if(gsp == gradient_select_dialog)
{
grad_set_grad_to_name(gsp->grad->name);
gradient_area_update (); /* update the indicator_area */
import_palette_grad_update(gsp->grad);
}
else
{
grad_change_callbacks(gsp, 0);
}
}
static void
grad_select_edit_callback (GtkWidget *w,
gpointer client_data)
{
GradSelectP gsp;
gsp = (GradSelectP) client_data;
grad_create_gradient_editor_init(TRUE);
/* Set the current gradient in this dialog to the "real current"*/
if(gsp && gsp->grad)
grad_set_grad_to_name(gsp->grad->name);
}
void
grad_select_free (GradSelectP gsp)
{
if (gsp)
{
if(gsp->callback_name)
g_free(gsp->callback_name);
/* remove from active list */
grad_active_dialogs = g_slist_remove(grad_active_dialogs,gsp);
g_free (gsp);
}
}
/* Close active dialogs that no longer have PDB registered for them */
void
gradients_check_dialogs(void)
{
GSList *list;
GradSelectP gsp;
gchar * name;
ProcRecord *prec = NULL;
list = grad_active_dialogs;
while (list)
{
gsp = (GradSelectP) list->data;
list = list->next;
name = gsp->callback_name;
prec = procedural_db_lookup(name);
if(!prec)
{
grad_active_dialogs = g_slist_remove(grad_active_dialogs,gsp);
/* Can alter grad_active_dialogs list*/
grad_select_close_callback(NULL,gsp);
}
}
}
static void
grad_change_callbacks(GradSelectP gsp, gint closing)
{
gchar * name;
ProcRecord *prec = NULL;
gradient_t *grad;
int nreturn_vals;
static int busy = 0;
gradient_t *oldgrad = curr_gradient;
/* Any procs registered to callback? */
Argument *return_vals;
if(!gsp || !gsp->callback_name || busy != 0)
return;
busy = 1;
name = gsp->callback_name;
grad = gsp->grad;
/* If its still registered run it */
prec = procedural_db_lookup(name);
if(prec && grad)
{
gdouble *values, *pv;
double pos, delta;
double r, g, b, a;
int i = gsp->sample_size;
pos = 0.0;
delta = 1.0 / (i - 1);
values = g_malloc(i * 4 * sizeof(gdouble));
pv = values;
curr_gradient = grad;
while (i--) {
grad_get_color_at(pos, &r, &g, &b, &a);
*pv++ = r;
*pv++ = g;
*pv++ = b;
*pv++ = a;
pos += delta;
} /* while */
curr_gradient = oldgrad;
return_vals = procedural_db_run_proc (name,
&nreturn_vals,
PDB_STRING,grad->name,
PDB_INT32,gsp->sample_size*4,
PDB_FLOATARRAY,values,
PDB_INT32,closing,
PDB_END);
if (!return_vals || return_vals[0].value.pdb_int != PDB_SUCCESS)
g_message ("failed to run gradient callback function");
else
procedural_db_destroy_args (return_vals, nreturn_vals);
}
busy = 0;
}
static void
grad_select_close_callback (GtkWidget *w,
gpointer client_data)
{
GradSelectP gsp;
gsp = (GradSelectP) client_data;
if (GTK_WIDGET_VISIBLE (gsp->shell))
gtk_widget_hide (gsp->shell);
/* Free memory if poping down dialog which is not the main one */
if(gsp != gradient_select_dialog)
{
grad_change_callbacks(gsp,1);
gtk_widget_destroy(gsp->shell);
grad_select_free(gsp);
}
}
static gint
grad_select_delete_callback (GtkWidget *w,
GdkEvent *e,
gpointer client_data)
{
grad_select_close_callback (w, client_data);
return TRUE;
}
GradSelectP
gsel_new_selection (gchar * title,
gchar * initial_gradient)
{
GradSelectP gsp;
gradient_t *grad = NULL;
GSList *list;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *scrolled_win;
GdkColormap *colormap;
gint select_pos;
/* Load them if they are not already loaded */
if (g_editor == NULL)
{
grad_create_gradient_editor_init(FALSE);
}
gsp = g_malloc (sizeof (_GradSelect));
gsp->callback_name = NULL;
/* The shell and main vbox */
gsp->shell = gtk_dialog_new ();
gtk_window_set_wmclass (GTK_WINDOW (gsp->shell), "gradselection", "Gimp");
gtk_window_set_policy (GTK_WINDOW (gsp->shell), FALSE, TRUE, FALSE);
vbox = gtk_vbox_new (FALSE, 1);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 1);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (gsp->shell)->vbox), vbox, TRUE, TRUE, 0);
/* handle the wm close event */
gtk_signal_connect (GTK_OBJECT (gsp->shell), "delete_event",
GTK_SIGNAL_FUNC (grad_select_delete_callback),
gsp);
/* clist preview of gradients */
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gsp->clist = gtk_clist_new (2);
gtk_clist_set_shadow_type (GTK_CLIST (gsp->clist), GTK_SHADOW_IN);
gtk_clist_set_row_height (GTK_CLIST (gsp->clist), 18);
gtk_clist_set_column_width (GTK_CLIST (gsp->clist), 0, 52);
gtk_clist_set_column_title (GTK_CLIST (gsp->clist), 0, _("Gradient"));
gtk_clist_set_column_title (GTK_CLIST (gsp->clist), 1, _("Name"));
gtk_clist_column_titles_show (GTK_CLIST (gsp->clist));
hbox = gtk_hbox_new (FALSE, 8);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show (hbox);
gtk_box_pack_start (GTK_BOX (hbox), scrolled_win, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (scrolled_win), gsp->clist);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_ALWAYS);
gtk_widget_show (scrolled_win);
gtk_widget_show (gsp->clist);
gtk_widget_set_usize (gsp->clist, 200, 250);
colormap = gtk_widget_get_colormap (gsp->clist);
gdk_color_parse ("black", &gsp->black);
gdk_color_alloc (colormap, &gsp->black);
gtk_signal_connect (GTK_OBJECT(gsp->clist), "select_row",
GTK_SIGNAL_FUNC(sel_list_item_update),
(gpointer) gsp);
action_items[0].user_data = gsp;
action_items[1].user_data = gsp;
build_action_area (GTK_DIALOG (gsp->shell), action_items, 2, 1);
if(!title)
{
gtk_window_set_title (GTK_WINDOW (gsp->shell), _("Gradient Selection"));
}
else
{
gtk_window_set_title (GTK_WINDOW (gsp->shell), title);
}
if (initial_gradient && strlen (initial_gradient))
{
list = gradients_list;
while (list)
{
grad = list->data;
if (strcmp (grad->name, initial_gradient) == 0)
{
/* We found it! */
break;
}
list = g_slist_next (list);
}
}
if (grad == NULL)
grad = curr_gradient;
gsp->grad = grad;
gtk_widget_realize (gsp->shell);
gsp->gc = gdk_gc_new (gsp->shell->window);
select_pos = ed_set_list_of_gradients (gsp->gc,
gsp->clist,
grad);
/* Now show the dialog */
gtk_widget_show (vbox);
gtk_widget_show (gsp->shell);
if (select_pos != -1)
gtk_clist_moveto (GTK_CLIST(gsp->clist),select_pos,0,0.0,0.0);
return gsp;
}
void
grad_create_gradient_editor(void)
{
if(gradient_select_dialog == NULL)
{
gradient_select_dialog = gsel_new_selection(_("Gradients"),NULL);
/* register this one only */
dialog_register(gradient_select_dialog->shell);
session_set_window_geometry (gradient_select_dialog->shell, &gradient_select_session_info, TRUE);
}
else
{
if (!GTK_WIDGET_VISIBLE(gradient_select_dialog->shell))
{
gtk_widget_show(gradient_select_dialog->shell);
}
else
gdk_window_raise(gradient_select_dialog->shell->window);
return;
}
}
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