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gimp/plug-ins/FractalExplorer/Dialogs.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., 675 Mass Ave, Cambridge, MA 02139, USA.
*********************************************************************/
#include "config.h"
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <glib/gstdio.h>
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "FractalExplorer.h"
#include "Dialogs.h"
#include "libgimp/stdplugins-intl.h"
#define ZOOM_UNDO_SIZE 100
static gint n_gradient_samples = 0;
static gdouble *gradient_samples = NULL;
static gchar *gradient_name = NULL;
static gboolean ready_now = FALSE;
static gchar *tpath = NULL;
static DialogElements *elements = NULL;
static GtkWidget *cmap_preview;
static GtkWidget *maindlg;
static explorer_vals_t zooms[ZOOM_UNDO_SIZE];
static gint zoomindex = 0;
static gint zoommax = 0;
static gint oldxpos = -1;
static gint oldypos = -1;
static gdouble x_press = -1.0;
static gdouble y_press = -1.0;
static explorer_vals_t standardvals =
{
0,
-2.0,
2.0,
-1.5,
1.5,
50.0,
-0.75,
-0.2,
0,
1.0,
1.0,
1.0,
1,
1,
0,
0,
0,
0,
1,
256,
0
};
/**********************************************************************
FORWARD DECLARATIONS
*********************************************************************/
static void load_file_chooser_response (GtkFileChooser *chooser,
gint response_id,
gpointer data);
static void save_file_chooser_response (GtkFileChooser *chooser,
gint response_id,
gpointer data);
static void create_load_file_chooser (GtkWidget *widget,
GtkWidget *dialog);
static void create_save_file_chooser (GtkWidget *widget,
GtkWidget *dialog);
static void cmap_preview_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
/**********************************************************************
CALLBACKS
*********************************************************************/
static void
dialog_response (GtkWidget *widget,
gint response_id,
gpointer data)
{
switch (response_id)
{
case GTK_RESPONSE_OK:
wint.run = TRUE;
gtk_widget_destroy (widget);
break;
default:
gtk_widget_destroy (widget);
break;
}
}
static void
dialog_reset_callback (GtkWidget *widget,
gpointer data)
{
wvals.xmin = standardvals.xmin;
wvals.xmax = standardvals.xmax;
wvals.ymin = standardvals.ymin;
wvals.ymax = standardvals.ymax;
wvals.iter = standardvals.iter;
wvals.cx = standardvals.cx;
wvals.cy = standardvals.cy;
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
static void
dialog_redraw_callback (GtkWidget *widget,
gpointer data)
{
gint alwaysprev = wvals.alwayspreview;
wvals.alwayspreview = TRUE;
set_cmap_preview ();
dialog_update_preview ();
wvals.alwayspreview = alwaysprev;
}
static void
dialog_undo_zoom_callback (GtkWidget *widget,
gpointer data)
{
if (zoomindex > 0)
{
zooms[zoomindex] = wvals;
zoomindex--;
wvals = zooms[zoomindex];
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
}
static void
dialog_redo_zoom_callback (GtkWidget *widget,
gpointer data)
{
if (zoomindex < zoommax)
{
zoomindex++;
wvals = zooms[zoomindex];
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
}
static void
dialog_step_in_callback (GtkWidget *widget,
gpointer data)
{
double xdifferenz;
double ydifferenz;
if (zoomindex < ZOOM_UNDO_SIZE - 1)
{
zooms[zoomindex]=wvals;
zoomindex++;
}
zoommax = zoomindex;
xdifferenz = wvals.xmax - wvals.xmin;
ydifferenz = wvals.ymax - wvals.ymin;
wvals.xmin += 1.0 / 6.0 * xdifferenz;
wvals.ymin += 1.0 / 6.0 * ydifferenz;
wvals.xmax -= 1.0 / 6.0 * xdifferenz;
wvals.ymax -= 1.0 / 6.0 * ydifferenz;
zooms[zoomindex] = wvals;
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
static void
dialog_step_out_callback (GtkWidget *widget,
gpointer data)
{
gdouble xdifferenz;
gdouble ydifferenz;
if (zoomindex < ZOOM_UNDO_SIZE - 1)
{
zooms[zoomindex]=wvals;
zoomindex++;
}
zoommax = zoomindex;
xdifferenz = wvals.xmax - wvals.xmin;
ydifferenz = wvals.ymax - wvals.ymin;
wvals.xmin -= 1.0 / 4.0 * xdifferenz;
wvals.ymin -= 1.0 / 4.0 * ydifferenz;
wvals.xmax += 1.0 / 4.0 * xdifferenz;
wvals.ymax += 1.0 / 4.0 * ydifferenz;
zooms[zoomindex] = wvals;
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
static void
explorer_toggle_update (GtkWidget *widget,
gpointer data)
{
gimp_toggle_button_update (widget, data);
set_cmap_preview ();
dialog_update_preview ();
}
static void
explorer_radio_update (GtkWidget *widget,
gpointer data)
{
gboolean c_sensitive;
gimp_radio_button_update (widget, data);
switch (wvals.fractaltype)
{
case TYPE_MANDELBROT:
case TYPE_SIERPINSKI:
c_sensitive = FALSE;
break;
default:
c_sensitive = TRUE;
break;
}
gimp_scale_entry_set_sensitive (elements->cx, c_sensitive);
gimp_scale_entry_set_sensitive (elements->cy, c_sensitive);
set_cmap_preview ();
dialog_update_preview ();
}
static void
explorer_double_adjustment_update (GtkAdjustment *adjustment,
gpointer data)
{
gimp_double_adjustment_update (adjustment, data);
set_cmap_preview ();
dialog_update_preview ();
}
static void
explorer_number_of_colors_callback (GtkAdjustment *adjustment,
gpointer data)
{
gimp_int_adjustment_update (adjustment, data);
g_free (gradient_samples);
if (! gradient_name)
gradient_name = gimp_context_get_gradient ();
gimp_gradient_get_uniform_samples (gradient_name,
wvals.ncolors,
wvals.gradinvert,
&n_gradient_samples,
&gradient_samples);
set_cmap_preview ();
dialog_update_preview ();
}
static void
explorer_gradient_select_callback (GimpGradientSelectButton *gradient_button,
const gchar *name,
gint width,
const gdouble *gradient_data,
gboolean dialog_closing,
gpointer data)
{
g_free (gradient_name);
g_free (gradient_samples);
gradient_name = g_strdup (name);
gimp_gradient_get_uniform_samples (gradient_name,
wvals.ncolors,
wvals.gradinvert,
&n_gradient_samples,
&gradient_samples);
if (wvals.colormode == 1)
{
set_cmap_preview ();
dialog_update_preview ();
}
}
static void
preview_draw_crosshair (gint px,
gint py)
{
gint x, y;
guchar *p_ul;
p_ul = wint.wimage + 3 * (preview_width * py + 0);
for (x = 0; x < preview_width; x++)
{
p_ul[0] ^= 254;
p_ul[1] ^= 254;
p_ul[2] ^= 254;
p_ul += 3;
}
p_ul = wint.wimage + 3 * (preview_width * 0 + px);
for (y = 0; y < preview_height; y++)
{
p_ul[0] ^= 254;
p_ul[1] ^= 254;
p_ul[2] ^= 254;
p_ul += 3 * preview_width;
}
}
static void
preview_redraw (void)
{
gimp_preview_area_draw (GIMP_PREVIEW_AREA (wint.preview),
0, 0, preview_width, preview_height,
GIMP_RGB_IMAGE,
wint.wimage, preview_width * 3);
gtk_widget_queue_draw (wint.preview);
}
static gboolean
preview_button_press_event (GtkWidget *widget,
GdkEventButton *event)
{
if (event->button == 1)
{
x_press = event->x;
y_press = event->y;
xbild = preview_width;
ybild = preview_height;
xdiff = (xmax - xmin) / xbild;
ydiff = (ymax - ymin) / ybild;
preview_draw_crosshair (x_press, y_press);
preview_redraw ();
}
return TRUE;
}
static gboolean
preview_motion_notify_event (GtkWidget *widget,
GdkEventButton *event)
{
if (oldypos != -1)
{
preview_draw_crosshair (oldxpos, oldypos);
}
oldxpos = event->x;
oldypos = event->y;
if ((oldxpos >= 0.0) &&
(oldypos >= 0.0) &&
(oldxpos < preview_width) &&
(oldypos < preview_height))
{
preview_draw_crosshair (oldxpos, oldypos);
}
else
{
oldypos = -1;
oldxpos = -1;
}
preview_redraw ();
return TRUE;
}
static gboolean
preview_leave_notify_event (GtkWidget *widget,
GdkEventButton *event)
{
if (oldypos != -1)
{
preview_draw_crosshair (oldxpos, oldypos);
}
oldxpos = -1;
oldypos = -1;
preview_redraw ();
gdk_window_set_cursor (maindlg->window, NULL);
return TRUE;
}
static gboolean
preview_enter_notify_event (GtkWidget *widget,
GdkEventButton *event)
{
static GdkCursor *cursor = NULL;
if (! cursor)
{
GdkDisplay *display = gtk_widget_get_display (maindlg);
cursor = gdk_cursor_new_for_display (display, GDK_TCROSS);
}
gdk_window_set_cursor (maindlg->window, cursor);
return TRUE;
}
static gboolean
preview_button_release_event (GtkWidget *widget,
GdkEventButton *event)
{
gdouble l_xmin;
gdouble l_xmax;
gdouble l_ymin;
gdouble l_ymax;
if (event->button == 1)
{
gdouble x_release, y_release;
x_release = event->x;
y_release = event->y;
if ((x_press >= 0.0) && (y_press >= 0.0) &&
(x_release >= 0.0) && (y_release >= 0.0) &&
(x_press < preview_width) && (y_press < preview_height) &&
(x_release < preview_width) && (y_release < preview_height))
{
l_xmin = (wvals.xmin +
(wvals.xmax - wvals.xmin) * (x_press / preview_width));
l_xmax = (wvals.xmin +
(wvals.xmax - wvals.xmin) * (x_release / preview_width));
l_ymin = (wvals.ymin +
(wvals.ymax - wvals.ymin) * (y_press / preview_height));
l_ymax = (wvals.ymin +
(wvals.ymax - wvals.ymin) * (y_release / preview_height));
if (zoomindex < ZOOM_UNDO_SIZE - 1)
{
zooms[zoomindex] = wvals;
zoomindex++;
}
zoommax = zoomindex;
wvals.xmin = l_xmin;
wvals.xmax = l_xmax;
wvals.ymin = l_ymin;
wvals.ymax = l_ymax;
dialog_change_scale ();
dialog_update_preview ();
oldypos = oldxpos = -1;
}
}
return TRUE;
}
/**********************************************************************
FUNCTION: explorer_dialog
*********************************************************************/
gint
explorer_dialog (void)
{
GtkWidget *dialog;
GtkWidget *top_hbox;
GtkWidget *left_vbox;
GtkWidget *abox;
GtkWidget *vbox;
GtkWidget *bbox;
GtkWidget *frame;
GtkWidget *toggle;
GtkWidget *toggle_vbox;
GtkWidget *toggle_vbox2;
GtkWidget *toggle_vbox3;
GtkWidget *notebook;
GtkWidget *hbox;
GtkWidget *table;
GtkWidget *button;
GtkWidget *gradient;
gchar *path;
gchar *gradient_name;
GSList *group = NULL;
gint i;
gimp_ui_init ("fractalexplorer", TRUE);
path = gimp_gimprc_query ("fractalexplorer-path");
if (path)
{
fractalexplorer_path = g_filename_from_utf8 (path, -1, NULL, NULL, NULL);
g_free (path);
}
else
{
gchar *gimprc = gimp_personal_rc_file ("gimprc");
gchar *full_path = gimp_config_build_data_path ("fractalexplorer");
gchar *esc_path = g_strescape (full_path, NULL);
g_free (full_path);
g_message (_("No %s in gimprc:\n"
"You need to add an entry like\n"
"(%s \"%s\")\n"
"to your %s file."),
"fractalexplorer-path",
"fractalexplorer-path",
esc_path, gimp_filename_to_utf8 (gimprc));
g_free (gimprc);
g_free (esc_path);
}
wint.wimage = g_new (guchar, preview_width * preview_height * 3);
elements = g_new (DialogElements, 1);
dialog = maindlg =
gimp_dialog_new ("Fractal Explorer", "fractalexplorer",
NULL, 0,
gimp_standard_help_func, HELP_ID,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
gimp_window_set_transient (GTK_WINDOW (dialog));
g_signal_connect (dialog, "response",
G_CALLBACK (dialog_response),
NULL);
g_signal_connect (dialog, "destroy",
G_CALLBACK (gtk_main_quit),
NULL);
top_hbox = gtk_hbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (top_hbox), 12);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), top_hbox,
FALSE, FALSE, 0);
gtk_widget_show (top_hbox);
left_vbox = gtk_vbox_new (FALSE, 12);
gtk_box_pack_start (GTK_BOX (top_hbox), left_vbox, FALSE, FALSE, 0);
gtk_widget_show (left_vbox);
/* Preview */
vbox = gtk_vbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (left_vbox), vbox, FALSE, FALSE, 0);
gtk_widget_show (vbox);
abox = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), abox, FALSE, FALSE, 0);
gtk_widget_show (abox);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_container_add (GTK_CONTAINER (abox), frame);
gtk_widget_show (frame);
wint.preview = gimp_preview_area_new ();
gtk_widget_set_size_request (wint.preview, preview_width, preview_height);
gtk_container_add (GTK_CONTAINER (frame), wint.preview);
g_signal_connect (wint.preview, "button-press-event",
G_CALLBACK (preview_button_press_event),
NULL);
g_signal_connect (wint.preview, "button-release-event",
G_CALLBACK (preview_button_release_event),
NULL);
g_signal_connect (wint.preview, "motion-notify-event",
G_CALLBACK (preview_motion_notify_event),
NULL);
g_signal_connect (wint.preview, "leave-notify-event",
G_CALLBACK (preview_leave_notify_event),
NULL);
g_signal_connect (wint.preview, "enter-notify-event",
G_CALLBACK (preview_enter_notify_event),
NULL);
gtk_widget_set_events (wint.preview, (GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_ENTER_NOTIFY_MASK));
gtk_widget_show (wint.preview);
toggle = gtk_check_button_new_with_label (_("Realtime preview"));
gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_toggle_update),
&wvals.alwayspreview);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
wvals.alwayspreview);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle, _("If enabled the preview will "
"be redrawn automatically"), NULL);
button = gtk_button_new_with_mnemonic (_("R_edraw preview"));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_redraw_callback),
dialog);
gtk_widget_show (button);
/* Zoom Options */
frame = gimp_frame_new (_("Zoom"));
gtk_box_pack_start (GTK_BOX (left_vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
vbox = gtk_vbox_new (FALSE, 6);
gtk_container_add (GTK_CONTAINER (frame), vbox);
gtk_widget_show (vbox);
bbox = gtk_hbox_new (TRUE, 6);
gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
gtk_widget_show (bbox);
button = gtk_button_new_from_stock (GTK_STOCK_ZOOM_IN);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_step_in_callback),
dialog);
button = gtk_button_new_from_stock (GTK_STOCK_ZOOM_OUT);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_step_out_callback),
dialog);
bbox = gtk_hbox_new (TRUE, 6);
gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0);
gtk_widget_show (bbox);
button = gtk_button_new_from_stock (GTK_STOCK_UNDO);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Undo last zoom change"), NULL);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_undo_zoom_callback),
dialog);
button = gtk_button_new_from_stock (GTK_STOCK_REDO);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Redo last zoom change"), NULL);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_redo_zoom_callback),
dialog);
/* Create notebook */
notebook = gtk_notebook_new ();
gtk_box_pack_start (GTK_BOX (top_hbox), notebook, FALSE, FALSE, 0);
gtk_widget_show (notebook);
/* "Parameters" page */
vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new_with_mnemonic (_("_Parameters")));
gtk_widget_show (vbox);
frame = gimp_frame_new (_("Fractal Parameters"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (8, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacing (GTK_TABLE (table), 6, 12);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
elements->xmin =
gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Left:"), SCALE_WIDTH, 10,
wvals.xmin, -3, 3, 0.001, 0.01, 5,
TRUE, 0, 0, NULL, NULL);
g_signal_connect (elements->xmin, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.xmin);
elements->xmax =
gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Right:"), SCALE_WIDTH, 10,
wvals.xmax, -3, 3, 0.001, 0.01, 5,
TRUE, 0, 0, NULL, NULL);
g_signal_connect (elements->xmax, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.xmax);
elements->ymin =
gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("Top:"), SCALE_WIDTH, 10,
wvals.ymin, -3, 3, 0.001, 0.01, 5,
TRUE, 0, 0, NULL, NULL);
g_signal_connect (elements->ymin, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.ymin);
elements->ymax =
gimp_scale_entry_new (GTK_TABLE (table), 0, 3,
_("Bottom:"), SCALE_WIDTH, 10,
wvals.ymax, -3, 3, 0.001, 0.01, 5,
TRUE, 0, 0, NULL, NULL);
g_signal_connect (elements->ymax, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.ymax);
elements->iter =
gimp_scale_entry_new (GTK_TABLE (table), 0, 4,
_("Iterations:"), SCALE_WIDTH, 10,
wvals.iter, 1, 1000, 1, 10, 0,
TRUE, 0, 0,
_("The higher the number of iterations, "
"the more details will be calculated"), NULL);
g_signal_connect (elements->iter, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.iter);
elements->cx =
gimp_scale_entry_new (GTK_TABLE (table), 0, 5,
_("CX:"), SCALE_WIDTH, 10,
wvals.cx, -2.5, 2.5, 0.001, 0.01, 5,
TRUE, 0, 0,
_("Changes aspect of fractal"), NULL);
g_signal_connect (elements->cx, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.cx);
elements->cy =
gimp_scale_entry_new (GTK_TABLE (table), 0, 6,
_("CY:"), SCALE_WIDTH, 10,
wvals.cy, -2.5, 2.5, 0.001, 0.01, 5,
TRUE, 0, 0,
_("Changes aspect of fractal"), NULL);
g_signal_connect (elements->cy, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.cy);
bbox = gtk_hbox_new (TRUE, 6);
gtk_table_attach_defaults (GTK_TABLE (table), bbox, 0, 3, 7, 8);
gtk_widget_show (bbox);
button = gtk_button_new_from_stock (GTK_STOCK_OPEN);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (create_load_file_chooser),
dialog);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Load a fractal from file"), NULL);
button = gtk_button_new_from_stock (GIMP_STOCK_RESET);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (dialog_reset_callback),
dialog);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Reset parameters to default values"),
NULL);
button = gtk_button_new_from_stock (GTK_STOCK_SAVE);
gtk_box_pack_start (GTK_BOX (bbox), button, TRUE, TRUE, 0);
g_signal_connect (button, "clicked",
G_CALLBACK (create_save_file_chooser),
dialog);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Save active fractal to file"), NULL);
/* Fractal type toggle box */
frame = gimp_frame_new (_("Fractal Type"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_hbox_new (FALSE, 12);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
toggle_vbox =
gimp_int_radio_group_new (FALSE, NULL,
G_CALLBACK (explorer_radio_update),
&wvals.fractaltype, wvals.fractaltype,
_("Mandelbrot"), TYPE_MANDELBROT,
&(elements->type[TYPE_MANDELBROT]),
_("Julia"), TYPE_JULIA,
&(elements->type[TYPE_JULIA]),
_("Barnsley 1"), TYPE_BARNSLEY_1,
&(elements->type[TYPE_BARNSLEY_1]),
_("Barnsley 2"), TYPE_BARNSLEY_2,
&(elements->type[TYPE_BARNSLEY_2]),
_("Barnsley 3"), TYPE_BARNSLEY_3,
&(elements->type[TYPE_BARNSLEY_3]),
_("Spider"), TYPE_SPIDER,
&(elements->type[TYPE_SPIDER]),
_("Man'o'war"), TYPE_MAN_O_WAR,
&(elements->type[TYPE_MAN_O_WAR]),
_("Lambda"), TYPE_LAMBDA,
&(elements->type[TYPE_LAMBDA]),
_("Sierpinski"), TYPE_SIERPINSKI,
&(elements->type[TYPE_SIERPINSKI]),
NULL);
toggle_vbox2 = gtk_vbox_new (FALSE, 2);
for (i = TYPE_BARNSLEY_2; i <= TYPE_SPIDER; i++)
{
g_object_ref (elements->type[i]);
gtk_widget_hide (elements->type[i]);
gtk_container_remove (GTK_CONTAINER (toggle_vbox), elements->type[i]);
gtk_box_pack_start (GTK_BOX (toggle_vbox2), elements->type[i],
FALSE, FALSE, 0);
gtk_widget_show (elements->type[i]);
g_object_unref (elements->type[i]);
}
toggle_vbox3 = gtk_vbox_new (FALSE, 2);
for (i = TYPE_MAN_O_WAR; i <= TYPE_SIERPINSKI; i++)
{
g_object_ref (elements->type[i]);
gtk_widget_hide (elements->type[i]);
gtk_container_remove (GTK_CONTAINER (toggle_vbox), elements->type[i]);
gtk_box_pack_start (GTK_BOX (toggle_vbox3), elements->type[i],
FALSE, FALSE, 0);
gtk_widget_show (elements->type[i]);
g_object_unref (elements->type[i]);
}
gtk_box_pack_start (GTK_BOX (hbox), toggle_vbox, FALSE, FALSE, 0);
gtk_widget_show (toggle_vbox);
gtk_box_pack_start (GTK_BOX (hbox), toggle_vbox2, FALSE, FALSE, 0);
gtk_widget_show (toggle_vbox2);
gtk_box_pack_start (GTK_BOX (hbox), toggle_vbox3, FALSE, FALSE, 0);
gtk_widget_show (toggle_vbox3);
/* Color page */
vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
gtk_label_new_with_mnemonic (_("Co_lors")));
gtk_widget_show (vbox);
/* Number of Colors frame */
frame = gimp_frame_new (_("Number of Colors"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (2, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
elements->ncol =
gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Number of colors:"), SCALE_WIDTH, 0,
wvals.ncolors, 2, MAXNCOLORS, 1, 10, 0,
TRUE, 0, 0,
_("Change the number of colors in the mapping"),
NULL);
g_signal_connect (elements->ncol, "value-changed",
G_CALLBACK (explorer_number_of_colors_callback),
&wvals.ncolors);
elements->useloglog = toggle =
gtk_check_button_new_with_label (_("Use loglog smoothing"));
gtk_table_attach_defaults (GTK_TABLE (table), toggle, 0, 3, 1, 2);
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_toggle_update),
&wvals.useloglog);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), wvals.useloglog);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle, _("Use log log smoothing to eliminate "
"\"banding\" in the result"), NULL);
/* Color Density frame */
frame = gimp_frame_new (_("Color Density"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
table = gtk_table_new (3, 3, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
gtk_container_add (GTK_CONTAINER (frame), table);
gtk_widget_show (table);
elements->red =
gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
_("Red:"), SCALE_WIDTH, 0,
wvals.redstretch, 0, 1, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Change the intensity of the red channel"), NULL);
g_signal_connect (elements->red, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.redstretch);
elements->green =
gimp_scale_entry_new (GTK_TABLE (table), 0, 1,
_("Green:"), SCALE_WIDTH, 0,
wvals.greenstretch, 0, 1, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Change the intensity of the green channel"), NULL);
g_signal_connect (elements->green, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.greenstretch);
elements->blue =
gimp_scale_entry_new (GTK_TABLE (table), 0, 2,
_("Blue:"), SCALE_WIDTH, 0,
wvals.bluestretch, 0, 1, 0.01, 0.1, 2,
TRUE, 0, 0,
_("Change the intensity of the blue channel"), NULL);
g_signal_connect (elements->blue, "value-changed",
G_CALLBACK (explorer_double_adjustment_update),
&wvals.bluestretch);
/* Color Function frame */
frame = gimp_frame_new (_("Color Function"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
hbox = gtk_hbox_new (FALSE, 12);
gtk_container_add (GTK_CONTAINER (frame), hbox);
gtk_widget_show (hbox);
/* Redmode radio frame */
frame = gimp_int_radio_group_new (TRUE, _("Red"),
G_CALLBACK (explorer_radio_update),
&wvals.redmode, wvals.redmode,
_("Sine"), SINUS,
&elements->redmode[SINUS],
_("Cosine"), COSINUS,
&elements->redmode[COSINUS],
_("None"), NONE,
&elements->redmode[NONE],
NULL);
gimp_help_set_help_data (elements->redmode[SINUS],
_("Use sine-function for this color component"),
NULL);
gimp_help_set_help_data (elements->redmode[COSINUS],
_("Use cosine-function for this color "
"component"), NULL);
gimp_help_set_help_data (elements->redmode[NONE],
_("Use linear mapping instead of any "
"trigonometrical function for this color "
"channel"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
toggle_vbox = GTK_BIN (frame)->child;
elements->redinvert = toggle =
gtk_check_button_new_with_label (_("Inversion"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), wvals.redinvert);
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_toggle_update),
&wvals.redinvert);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("If you enable this option higher color values "
"will be swapped with lower ones and vice "
"versa"), NULL);
/* Greenmode radio frame */
frame = gimp_int_radio_group_new (TRUE, _("Green"),
G_CALLBACK (explorer_radio_update),
&wvals.greenmode, wvals.greenmode,
_("Sine"), SINUS,
&elements->greenmode[SINUS],
_("Cosine"), COSINUS,
&elements->greenmode[COSINUS],
_("None"), NONE,
&elements->greenmode[NONE],
NULL);
gimp_help_set_help_data (elements->greenmode[SINUS],
_("Use sine-function for this color component"),
NULL);
gimp_help_set_help_data (elements->greenmode[COSINUS],
_("Use cosine-function for this color "
"component"), NULL);
gimp_help_set_help_data (elements->greenmode[NONE],
_("Use linear mapping instead of any "
"trigonometrical function for this color "
"channel"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
toggle_vbox = GTK_BIN (frame)->child;
elements->greeninvert = toggle =
gtk_check_button_new_with_label (_("Inversion"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle), wvals.greeninvert);
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_toggle_update),
&wvals.greeninvert);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("If you enable this option higher color values "
"will be swapped with lower ones and vice "
"versa"), NULL);
/* Bluemode radio frame */
frame = gimp_int_radio_group_new (TRUE, _("Blue"),
G_CALLBACK (explorer_radio_update),
&wvals.bluemode, wvals.bluemode,
_("Sine"), SINUS,
&elements->bluemode[SINUS],
_("Cosine"), COSINUS,
&elements->bluemode[COSINUS],
_("None"), NONE,
&elements->bluemode[NONE],
NULL);
gimp_help_set_help_data (elements->bluemode[SINUS],
_("Use sine-function for this color component"),
NULL);
gimp_help_set_help_data (elements->bluemode[COSINUS],
_("Use cosine-function for this color "
"component"), NULL);
gimp_help_set_help_data (elements->bluemode[NONE],
_("Use linear mapping instead of any "
"trigonometrical function for this color "
"channel"), NULL);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
toggle_vbox = GTK_BIN (frame)->child;
elements->blueinvert = toggle =
gtk_check_button_new_with_label (_("Inversion"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON( toggle), wvals.blueinvert);
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_toggle_update),
&wvals.blueinvert);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("If you enable this option higher color values "
"will be swapped with lower ones and vice "
"versa"), NULL);
/* Colormode toggle box */
frame = gimp_frame_new (_("Color Mode"));
gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
gtk_widget_show (frame);
toggle_vbox = gtk_vbox_new (FALSE, 2);
gtk_container_add (GTK_CONTAINER (frame), toggle_vbox);
gtk_widget_show (toggle_vbox);
toggle = elements->colormode[0] =
gtk_radio_button_new_with_label (group, _("As specified above"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (toggle_vbox), toggle, FALSE, FALSE, 0);
g_object_set_data (G_OBJECT (toggle), "gimp-item-data",
GINT_TO_POINTER (0));
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_radio_update),
&wvals.colormode);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
wvals.colormode == 0);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("Create a color-map with the options you "
"specified above (color density/function). The "
"result is visible in the preview image"), NULL);
hbox = gtk_hbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (toggle_vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
toggle = elements->colormode[1] =
gtk_radio_button_new_with_label (group,
_("Apply active gradient to final image"));
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (toggle));
gtk_box_pack_start (GTK_BOX (hbox), toggle, TRUE, TRUE, 0);
g_object_set_data (G_OBJECT (toggle), "gimp-item-data",
GINT_TO_POINTER (1));
g_signal_connect (toggle, "toggled",
G_CALLBACK (explorer_radio_update),
&wvals.colormode);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
wvals.colormode == 1);
gtk_widget_show (toggle);
gimp_help_set_help_data (toggle,
_("Create a color-map using a gradient from "
"the gradient editor"), NULL);
gradient_name = gimp_context_get_gradient ();
gimp_gradient_get_uniform_samples (gradient_name,
wvals.ncolors,
wvals.gradinvert,
&n_gradient_samples,
&gradient_samples);
gradient = gimp_gradient_select_button_new (_("FractalExplorer Gradient"),
gradient_name);
g_signal_connect (gradient, "gradient-set",
G_CALLBACK (explorer_gradient_select_callback), NULL);
g_free (gradient_name);
gtk_box_pack_start (GTK_BOX (hbox), gradient, FALSE, FALSE, 0);
gtk_widget_show (gradient);
abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0);
{
gint xsize, ysize;
for (ysize = 1; ysize * ysize * ysize < 8192; ysize++) /**/;
xsize = wvals.ncolors / ysize;
while (xsize * ysize < 8192) xsize++;
gtk_widget_set_size_request (abox, xsize, ysize * 4);
}
gtk_box_pack_start (GTK_BOX (toggle_vbox), abox, FALSE, FALSE, 0);
gtk_widget_show (abox);
cmap_preview = gimp_preview_area_new ();
gtk_widget_set_size_request (cmap_preview, 32, 32);
gtk_container_add (GTK_CONTAINER (abox), cmap_preview);
g_signal_connect (cmap_preview, "size_allocate",
G_CALLBACK (cmap_preview_size_allocate), NULL);
gtk_widget_show (cmap_preview);
frame = add_objects_list ();
gtk_notebook_append_page (GTK_NOTEBOOK (notebook), frame,
gtk_label_new_with_mnemonic (_("_Fractals")));
gtk_widget_show (frame);
gtk_notebook_set_current_page (GTK_NOTEBOOK (notebook), 0);
gtk_widget_show (dialog);
ready_now = TRUE;
set_cmap_preview ();
dialog_update_preview ();
gtk_main ();
g_free (wint.wimage);
return wint.run;
}
/**********************************************************************
FUNCTION: dialog_update_preview
*********************************************************************/
void
dialog_update_preview (void)
{
gdouble left;
gdouble right;
gdouble bottom;
gdouble top;
gdouble dx;
gdouble dy;
gdouble cx;
gdouble cy;
gint px;
gint py;
gint xcoord;
gint ycoord;
gint iteration;
guchar *p_ul;
gdouble a;
gdouble b;
gdouble x;
gdouble y;
gdouble oldx;
gdouble oldy;
gdouble foldxinitx;
gdouble foldxinity;
gdouble tempsqrx;
gdouble tempsqry;
gdouble tmpx = 0;
gdouble tmpy = 0;
gdouble foldyinitx;
gdouble foldyinity;
gdouble adjust;
gdouble xx = 0;
gint counter;
gint color;
gint useloglog;
if (NULL == wint.preview)
return;
if (ready_now && wvals.alwayspreview)
{
left = sel_x1;
right = sel_x2 - 1;
bottom = sel_y2 - 1;
top = sel_y1;
dx = (right - left) / (preview_width - 1);
dy = (bottom - top) / (preview_height - 1);
xmin = wvals.xmin;
xmax = wvals.xmax;
ymin = wvals.ymin;
ymax = wvals.ymax;
cx = wvals.cx;
cy = wvals.cy;
xbild = preview_width;
ybild = preview_height;
xdiff = (xmax - xmin) / xbild;
ydiff = (ymax - ymin) / ybild;
py = 0;
p_ul = wint.wimage;
iteration = MAX (1, (int) wvals.iter);
useloglog = wvals.useloglog;
for (ycoord = 0; ycoord < preview_height; ycoord++)
{
px = 0;
for (xcoord = 0; xcoord < preview_width; xcoord++)
{
a = (double) xmin + (double) xcoord * xdiff;
b = (double) ymin + (double) ycoord * ydiff;
if (wvals.fractaltype != TYPE_MANDELBROT)
{
tmpx = x = a;
tmpy = y = b;
}
else
{
x = 0;
y = 0;
}
for (counter = 0;
(counter < iteration) && ((x * x + y * y) < 4);
counter++)
{
oldx = x;
oldy = y;
switch (wvals.fractaltype)
{
case TYPE_MANDELBROT:
xx = x * x - y * y + a;
y = 2.0 * x * y + b;
break;
case TYPE_JULIA:
xx = x * x - y * y + cx;
y = 2.0 * x * y + cy;
break;
case TYPE_BARNSLEY_1:
foldxinitx = oldx * cx;
foldyinity = oldy * cy;
foldxinity = oldx * cy;
foldyinitx = oldy * cx;
/* orbit calculation */
if (oldx >= 0)
{
xx = (foldxinitx - cx - foldyinity);
y = (foldyinitx - cy + foldxinity);
}
else
{
xx = (foldxinitx + cx - foldyinity);
y = (foldyinitx + cy + foldxinity);
}
break;
case TYPE_BARNSLEY_2:
foldxinitx = oldx * cx;
foldyinity = oldy * cy;
foldxinity = oldx * cy;
foldyinitx = oldy * cx;
/* orbit calculation */
if (foldxinity + foldyinitx >= 0)
{
xx = foldxinitx - cx - foldyinity;
y = foldyinitx - cy + foldxinity;
}
else
{
xx = foldxinitx + cx - foldyinity;
y = foldyinitx + cy + foldxinity;
}
break;
case TYPE_BARNSLEY_3:
foldxinitx = oldx * oldx;
foldyinity = oldy * oldy;
foldxinity = oldx * oldy;
/* orbit calculation */
if (oldx > 0)
{
xx = foldxinitx - foldyinity - 1.0;
y = foldxinity * 2;
}
else
{
xx = foldxinitx - foldyinity -1.0 + cx * oldx;
y = foldxinity * 2;
y += cy * oldx;
}
break;
case TYPE_SPIDER:
/* { c=z=pixel: z=z*z+c; c=c/2+z, |z|<=4 } */
xx = x*x - y*y + tmpx + cx;
y = 2 * oldx * oldy + tmpy +cy;
tmpx = tmpx/2 + xx;
tmpy = tmpy/2 + y;
break;
case TYPE_MAN_O_WAR:
xx = x*x - y*y + tmpx + cx;
y = 2.0 * x * y + tmpy + cy;
tmpx = oldx;
tmpy = oldy;
break;
case TYPE_LAMBDA:
tempsqrx = x * x;
tempsqry = y * y;
tempsqrx = oldx - tempsqrx + tempsqry;
tempsqry = -(oldy * oldx);
tempsqry += tempsqry + oldy;
xx = cx * tempsqrx - cy * tempsqry;
y = cx * tempsqry + cy * tempsqrx;
break;
case TYPE_SIERPINSKI:
xx = oldx + oldx;
y = oldy + oldy;
if (oldy > .5)
y = y - 1;
else if (oldx > .5)
xx = xx - 1;
break;
default:
break;
}
x = xx;
}
if (useloglog)
{
adjust = log (log (x * x + y * y) / 2) / log (2);
}
else
{
adjust = 0.0;
}
color = (int) (((counter - adjust) *
(wvals.ncolors - 1)) / iteration);
p_ul[0] = colormap[color].r;
p_ul[1] = colormap[color].g;
p_ul[2] = colormap[color].b;
p_ul += 3;
px += 1;
}
py += 1;
}
preview_redraw ();
}
}
/**********************************************************************
FUNCTION: cmap_preview_size_allocate()
*********************************************************************/
static void
cmap_preview_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
gint i;
gint x;
gint y;
gint j;
guchar *b;
GimpPreviewArea *preview = GIMP_PREVIEW_AREA (widget);
b = g_new (guchar, allocation->width * allocation->height * 3);
for (y = 0; y < allocation->height; y++)
{
for (x = 0; x < allocation->width; x++)
{
i = x + (y / 4) * allocation->width;
if (i > wvals.ncolors)
{
for (j = 0; j < 3; j++)
b[(y*allocation->width + x) * 3 + j] = 0;
}
else
{
b[(y*allocation->width + x) * 3] = colormap[i].r;
b[(y*allocation->width + x) * 3 + 1] = colormap[i].g;
b[(y*allocation->width + x) * 3 + 2] = colormap[i].b;
}
}
}
gimp_preview_area_draw (preview,
0, 0, allocation->width, allocation->height,
GIMP_RGB_IMAGE, b, allocation->width*3);
gtk_widget_queue_draw (cmap_preview);
g_free (b);
}
/**********************************************************************
FUNCTION: set_cmap_preview()
*********************************************************************/
void
set_cmap_preview (void)
{
gint xsize, ysize;
if (NULL == cmap_preview)
return;
make_color_map ();
for (ysize = 1; ysize * ysize * ysize < wvals.ncolors; ysize++)
/**/;
xsize = wvals.ncolors / ysize;
while (xsize * ysize < wvals.ncolors)
xsize++;
gtk_widget_set_size_request (cmap_preview, xsize, ysize * 4);
}
/**********************************************************************
FUNCTION: make_color_map()
*********************************************************************/
void
make_color_map (void)
{
gint i;
gint r;
gint gr;
gint bl;
gdouble redstretch;
gdouble greenstretch;
gdouble bluestretch;
gdouble pi = atan (1) * 4;
/* get gradient samples if they don't exist -- fixes gradient color
* mode for noninteractive use (bug #103470).
*/
if (gradient_samples == NULL)
{
gchar *gradient_name = gimp_context_get_gradient ();
gimp_gradient_get_uniform_samples (gradient_name,
wvals.ncolors,
wvals.gradinvert,
&n_gradient_samples,
&gradient_samples);
g_free (gradient_name);
}
redstretch = wvals.redstretch * 127.5;
greenstretch = wvals.greenstretch * 127.5;
bluestretch = wvals.bluestretch * 127.5;
for (i = 0; i < wvals.ncolors; i++)
if (wvals.colormode == 1)
{
colormap[i].r = (guchar)(gradient_samples[i * 4] * 255.9);
colormap[i].g = (guchar)(gradient_samples[i * 4 + 1] * 255.9);
colormap[i].b = (guchar)(gradient_samples[i * 4 + 2] * 255.9);
}
else
{
double x = (i*2.0) / wvals.ncolors;
r = gr = bl = 0;
switch (wvals.redmode)
{
case SINUS:
r = (int) redstretch *(1.0 + sin((x - 1) * pi));
break;
case COSINUS:
r = (int) redstretch *(1.0 + cos((x - 1) * pi));
break;
case NONE:
r = (int)(redstretch *(x));
break;
default:
break;
}
switch (wvals.greenmode)
{
case SINUS:
gr = (int) greenstretch *(1.0 + sin((x - 1) * pi));
break;
case COSINUS:
gr = (int) greenstretch *(1.0 + cos((x - 1) * pi));
break;
case NONE:
gr = (int)(greenstretch *(x));
break;
default:
break;
}
switch (wvals.bluemode)
{
case SINUS:
bl = (int) bluestretch * (1.0 + sin ((x - 1) * pi));
break;
case COSINUS:
bl = (int) bluestretch * (1.0 + cos ((x - 1) * pi));
break;
case NONE:
bl = (int) (bluestretch * x);
break;
default:
break;
}
r = MIN (r, 255);
gr = MIN (gr, 255);
bl = MIN (bl, 255);
if (wvals.redinvert)
r = 255 - r;
if (wvals.greeninvert)
gr = 255 - gr;
if (wvals.blueinvert)
bl = 255 - bl;
colormap[i].r = r;
colormap[i].g = gr;
colormap[i].b = bl;
}
}
/**********************************************************************
FUNCTION: dialog_change_scale
*********************************************************************/
void
dialog_change_scale (void)
{
ready_now = FALSE;
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->xmin), wvals.xmin);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->xmax), wvals.xmax);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->ymin), wvals.ymin);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->ymax), wvals.ymax);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->iter), wvals.iter);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->cx), wvals.cx);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->cy), wvals.cy);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->red), wvals.redstretch);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->green),wvals.greenstretch);
gtk_adjustment_set_value (GTK_ADJUSTMENT (elements->blue), wvals.bluestretch);
gtk_toggle_button_set_active
(GTK_TOGGLE_BUTTON (elements->type[wvals.fractaltype]), TRUE);
gtk_toggle_button_set_active
(GTK_TOGGLE_BUTTON (elements->redmode[wvals.redmode]), TRUE);
gtk_toggle_button_set_active
(GTK_TOGGLE_BUTTON (elements->greenmode[wvals.greenmode]), TRUE);
gtk_toggle_button_set_active
(GTK_TOGGLE_BUTTON (elements->bluemode[wvals.bluemode]), TRUE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (elements->redinvert),
wvals.redinvert);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (elements->greeninvert),
wvals.greeninvert);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (elements->blueinvert),
wvals.blueinvert);
gtk_toggle_button_set_active
(GTK_TOGGLE_BUTTON (elements->colormode[wvals.colormode]), TRUE);
ready_now = TRUE;
}
/**********************************************************************
FUNCTION: save_options
*********************************************************************/
static void
save_options (FILE * fp)
{
gchar buf[64];
/* Save options */
fprintf (fp, "fractaltype: %i\n", wvals.fractaltype);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.xmin);
fprintf (fp, "xmin: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.xmax);
fprintf (fp, "xmax: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.ymin);
fprintf (fp, "ymin: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.ymax);
fprintf (fp, "ymax: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.iter);
fprintf (fp, "iter: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.cx);
fprintf (fp, "cx: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.cy);
fprintf (fp, "cy: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.redstretch * 128.0);
fprintf (fp, "redstretch: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.greenstretch * 128.0);
fprintf (fp, "greenstretch: %s\n", buf);
g_ascii_formatd (buf, sizeof (buf), "%0.15f", wvals.bluestretch * 128.0);
fprintf (fp, "bluestretch: %s\n", buf);
fprintf (fp, "redmode: %i\n", wvals.redmode);
fprintf (fp, "greenmode: %i\n", wvals.greenmode);
fprintf (fp, "bluemode: %i\n", wvals.bluemode);
fprintf (fp, "redinvert: %i\n", wvals.redinvert);
fprintf (fp, "greeninvert: %i\n", wvals.greeninvert);
fprintf (fp, "blueinvert: %i\n", wvals.blueinvert);
fprintf (fp, "colormode: %i\n", wvals.colormode);
fputs ("#**********************************************************************\n", fp);
fprintf(fp, "<EOF>\n");
fputs ("#**********************************************************************\n", fp);
}
static void
save_callback (void)
{
FILE *fp;
const gchar *savename = filename;
fp = g_fopen (savename, "wt+");
if (!fp)
{
g_message (_("Could not open '%s' for writing: %s"),
gimp_filename_to_utf8 (savename), g_strerror (errno));
return;
}
/* Write header out */
fputs (FRACTAL_HEADER, fp);
fputs ("#**********************************************************************\n", fp);
fputs ("# This is a data file for the Fractal Explorer plug-in for the GIMP *\n", fp);
fputs ("#**********************************************************************\n", fp);
save_options (fp);
if (ferror (fp))
g_message (_("Could not write '%s': %s"),
gimp_filename_to_utf8 (savename), g_strerror (ferror (fp)));
fclose (fp);
}
static void
save_file_chooser_response (GtkFileChooser *chooser,
gint response_id,
gpointer data)
{
if (response_id == GTK_RESPONSE_OK)
{
filename = gtk_file_chooser_get_filename (chooser);
save_callback ();
}
gtk_widget_destroy (GTK_WIDGET (chooser));
}
static void
file_chooser_set_default_folder (GtkFileChooser *chooser)
{
GList *path_list;
gchar *dir;
if (! fractalexplorer_path)
return;
path_list = gimp_path_parse (fractalexplorer_path, 16, FALSE, NULL);
dir = gimp_path_get_user_writable_dir (path_list);
if (! dir)
dir = g_strdup (gimp_directory ());
gtk_file_chooser_set_current_folder (chooser, dir);
g_free (dir);
gimp_path_free (path_list);
}
static void
load_file_chooser_response (GtkFileChooser *chooser,
gint response_id,
gpointer data)
{
if (response_id == GTK_RESPONSE_OK)
{
filename = gtk_file_chooser_get_filename (chooser);
if (g_file_test (filename, G_FILE_TEST_IS_REGULAR))
{
explorer_load ();
}
gtk_widget_show (maindlg);
dialog_change_scale ();
set_cmap_preview ();
dialog_update_preview ();
}
gtk_widget_destroy (GTK_WIDGET (chooser));
}
static void
create_load_file_chooser (GtkWidget *widget,
GtkWidget *dialog)
{
static GtkWidget *window = NULL;
if (!window)
{
window =
gtk_file_chooser_dialog_new (_("Load Fractal Parameters"),
GTK_WINDOW (dialog),
GTK_FILE_CHOOSER_ACTION_OPEN,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OPEN, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (window), GTK_RESPONSE_OK);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (window),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
file_chooser_set_default_folder (GTK_FILE_CHOOSER (window));
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&window);
g_signal_connect (window, "response",
G_CALLBACK (load_file_chooser_response),
window);
}
gtk_window_present (GTK_WINDOW (window));
}
static void
create_save_file_chooser (GtkWidget *widget,
GtkWidget *dialog)
{
static GtkWidget *window = NULL;
if (! window)
{
window =
gtk_file_chooser_dialog_new (_("Save Fractal Parameters"),
GTK_WINDOW (dialog),
GTK_FILE_CHOOSER_ACTION_SAVE,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_SAVE, GTK_RESPONSE_OK,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (window), GTK_RESPONSE_OK);
gtk_dialog_set_alternative_button_order (GTK_DIALOG (window),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&window);
g_signal_connect (window, "response",
G_CALLBACK (save_file_chooser_response),
window);
}
if (tpath)
{
gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (window), tpath);
}
else
{
file_chooser_set_default_folder (GTK_FILE_CHOOSER (window));
}
gtk_window_present (GTK_WINDOW (window));
}
gchar*
get_line (gchar *buf,
gint s,
FILE *from,
gint init)
{
gint slen;
gchar *ret;
if (init)
line_no = 1;
else
line_no++;
do
{
ret = fgets (buf, s, from);
}
while (!ferror (from) && buf[0] == '#');
slen = strlen (buf);
/* The last newline is a pain */
if (slen > 0)
buf[slen - 1] = '\0';
if (ferror (from))
{
g_warning ("Error reading file");
return NULL;
}
return ret;
}
gint
load_options (fractalexplorerOBJ *xxx,
FILE *fp)
{
gchar load_buf[MAX_LOAD_LINE];
gchar str_buf[MAX_LOAD_LINE];
gchar opt_buf[MAX_LOAD_LINE];
/* default values */
xxx->opts = standardvals;
xxx->opts.gradinvert = FALSE;
get_line (load_buf, MAX_LOAD_LINE, fp, 0);
while (!feof (fp) && strcmp (load_buf, "<EOF>"))
{
/* Get option name */
sscanf (load_buf, "%s %s", str_buf, opt_buf);
if (!strcmp (str_buf, "fractaltype:"))
{
gint sp = 0;
sp = atoi (opt_buf);
if (sp < 0)
return -1;
xxx->opts.fractaltype = sp;
}
else if (!strcmp (str_buf, "xmin:"))
{
xxx->opts.xmin = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp (str_buf, "xmax:"))
{
xxx->opts.xmax = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp(str_buf, "ymin:"))
{
xxx->opts.ymin = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp (str_buf, "ymax:"))
{
xxx->opts.ymax = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp(str_buf, "redstretch:"))
{
gdouble sp = g_ascii_strtod (opt_buf, NULL);
xxx->opts.redstretch = sp / 128.0;
}
else if (!strcmp(str_buf, "greenstretch:"))
{
gdouble sp = g_ascii_strtod (opt_buf, NULL);
xxx->opts.greenstretch = sp / 128.0;
}
else if (!strcmp (str_buf, "bluestretch:"))
{
gdouble sp = g_ascii_strtod (opt_buf, NULL);
xxx->opts.bluestretch = sp / 128.0;
}
else if (!strcmp (str_buf, "iter:"))
{
xxx->opts.iter = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp(str_buf, "cx:"))
{
xxx->opts.cx = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp (str_buf, "cy:"))
{
xxx->opts.cy = g_ascii_strtod (opt_buf, NULL);
}
else if (!strcmp(str_buf, "redmode:"))
{
xxx->opts.redmode = atoi (opt_buf);
}
else if (!strcmp(str_buf, "greenmode:"))
{
xxx->opts.greenmode = atoi (opt_buf);
}
else if (!strcmp(str_buf, "bluemode:"))
{
xxx->opts.bluemode = atoi (opt_buf);
}
else if (!strcmp (str_buf, "redinvert:"))
{
xxx->opts.redinvert = atoi (opt_buf);
}
else if (!strcmp (str_buf, "greeninvert:"))
{
xxx->opts.greeninvert = atoi (opt_buf);
}
else if (!strcmp(str_buf, "blueinvert:"))
{
xxx->opts.blueinvert = atoi (opt_buf);
}
else if (!strcmp (str_buf, "colormode:"))
{
xxx->opts.colormode = atoi (opt_buf);
}
get_line (load_buf, MAX_LOAD_LINE, fp, 0);
}
return 0;
}
void
explorer_load (void)
{
FILE *fp;
gchar load_buf[MAX_LOAD_LINE];
g_assert (filename != NULL);
fp = g_fopen (filename, "rt");
if (!fp)
{
g_message (_("Could not open '%s' for reading: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
return;
}
get_line (load_buf, MAX_LOAD_LINE, fp, 1);
if (strncmp (FRACTAL_HEADER, load_buf, strlen (load_buf)))
{
g_message (_("'%s' is not a FractalExplorer file"),
gimp_filename_to_utf8 (filename));
return;
}
if (load_options (current_obj,fp))
{
g_message (_("'%s' is corrupt. Line %d Option section incorrect"),
gimp_filename_to_utf8 (filename), line_no);
return;
}
wvals = current_obj->opts;
fclose (fp);
}
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