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gimp/plug-ins/figures/figures.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 <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "libgimp/gimp.h"
#include "gtk/gtk.h"
/* Declare local functions. */
static void query(void);
static void run(char *name,
int nparams,
GParam * param,
int *nreturn_vals,
GParam ** return_vals);
static gint dialog();
static void doit(GDrawable * drawable);
GPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
gint bytes;
gint sx1, sy1, sx2, sy2;
int run_flag = 0;
typedef struct {
gint min_width, max_width;
gint min_height, max_height;
float density;
} config;
config my_config =
{
10, 30, /* min_width, max_width */
10, 30, /* min_height, max_height */
4 /* density */
};
MAIN()
static void query()
{
static GParamDef args[] =
{
{PARAM_INT32, "run_mode", "Interactive, non-interactive"},
{PARAM_IMAGE, "image", "Input image (unused)"},
{PARAM_DRAWABLE, "drawable", "Input drawable"},
{PARAM_FLOAT, "density", "Density"},
{PARAM_INT32, "min_width", "Min. width"},
{PARAM_INT32, "max_width", "Max. width"},
{PARAM_INT32, "min_height", "Min. height"},
{PARAM_INT32, "max_height", "Max. height"},
};
static GParamDef *return_vals = NULL;
static int nargs = sizeof(args) / sizeof(args[0]);
static int nreturn_vals = 0;
gimp_install_procedure("plug_in_figures",
"Draws lots of rectangles.",
"Can be nice to use as \"textures\".",
"Tim Newsome",
"Tim Newsome",
"1997",
"<Image>/Filters/Render/Figures",
"RGB*, GRAY*",
PROC_PLUG_IN,
nargs, nreturn_vals,
args, return_vals);
}
static void run(char *name, int n_params, GParam * param, int *nreturn_vals,
GParam ** return_vals)
{
static GParam values[1];
GDrawable *drawable;
GRunModeType run_mode;
GStatusType status = STATUS_SUCCESS;
*nreturn_vals = 1;
*return_vals = values;
run_mode = param[0].data.d_int32;
if (run_mode == RUN_NONINTERACTIVE) {
if (n_params != 8) {
status = STATUS_CALLING_ERROR;
} else {
my_config.density = param[3].data.d_float;
my_config.min_width = param[4].data.d_int32;
my_config.max_width = param[5].data.d_int32;
my_config.min_height = param[6].data.d_int32;
my_config.max_height = param[7].data.d_int32;
}
} else {
/* Possibly retrieve data */
gimp_get_data("plug_in_figures", &my_config);
if (run_mode == RUN_INTERACTIVE) {
/* Oh boy. We get to do a dialog box, because we can't really expect the
* user to set us up with the right values using gdb.
*/
if (!dialog()) {
/* The dialog was closed, or something similarly evil happened. */
status = STATUS_EXECUTION_ERROR;
}
}
}
if (status == STATUS_SUCCESS) {
/* Get the specified drawable */
drawable = gimp_drawable_get(param[2].data.d_drawable);
/* Make sure that the drawable is gray or RGB color */
if (gimp_drawable_color(drawable->id) || gimp_drawable_gray(drawable->id)) {
gimp_progress_init("Drawing Figures...");
gimp_tile_cache_ntiles(2 * (drawable->width / gimp_tile_width() + 1));
srand(time(NULL));
doit(drawable);
if (run_mode != RUN_NONINTERACTIVE)
gimp_displays_flush();
if (run_mode == RUN_INTERACTIVE)
gimp_set_data("plug_in_figures", &my_config, sizeof(my_config));
} else {
status = STATUS_EXECUTION_ERROR;
}
gimp_drawable_detach(drawable);
}
values[0].type = PARAM_STATUS;
values[0].data.d_status = status;
}
/*
* Draws a rectangle in region, using tmp as tempspace, with center x, y,
* width w, height h, with color color, and opaqueness a.
*/
static void draw_rectangle(guchar * tmp, GPixelRgn * region, int x, int y,
int w, int h, guchar color[], float a)
{
int i, j, k;
int rx1, rx2, ry1, ry2;
rx1 = x - w / 2;
rx2 = rx1 + w;
ry1 = y - h / 2;
ry2 = ry1 + h;
rx1 = rx1 < sx1 ? sx1 : rx1;
ry1 = ry1 < sy1 ? sy1 : ry1;
rx2 = rx2 > sx2 ? sx2 : rx2;
ry2 = ry2 > sy2 ? sy2 : ry2;
gimp_pixel_rgn_get_rect(region, tmp, rx1, ry1, rx2 - rx1, ry2 - ry1);
for (j = 0; j < (rx2 - rx1); j++) {
for (k = 0; k < (ry2 - ry1); k++) {
for (i = 0; i < bytes; i++) {
tmp[(j + (rx2 - rx1) * k) * bytes + i] =
(float) tmp[(j + (rx2 - rx1) * k) * bytes + i] * (1 - a) +
(float) color[i] * a;
}
}
}
gimp_pixel_rgn_set_rect(region, tmp, rx1, ry1, rx2 - rx1, ry2 - ry1);
}
static void doit(GDrawable * drawable)
{
GPixelRgn srcPR, destPR;
gint width, height;
int x, y, w, h;
int i, j;
guchar *tmp, *copybuf;
guchar color[4];
int objects;
/* Get the input area. This is the bounding box of the selection in
* the image (or the entire image if there is no selection). Only
* operating on the input area is simply an optimization. It doesn't
* need to be done for correct operation. (It simply makes it go
* faster, since fewer pixels need to be operated on).
*/
gimp_drawable_mask_bounds(drawable->id, &sx1, &sy1, &sx2, &sy2);
/* Get the size of the input image. (This will/must be the same
* as the size of the output image.
*/
width = drawable->width;
height = drawable->height;
bytes = drawable->bpp;
tmp = (guchar *) malloc(my_config.max_width * my_config.max_height * bytes);
if (tmp == NULL) {
return;
}
/* initialize the pixel regions */
gimp_pixel_rgn_init(&srcPR, drawable, 0, 0, width, height, FALSE, FALSE);
gimp_pixel_rgn_init(&destPR, drawable, 0, 0, width, height, TRUE, TRUE);
/* First off, copy the old one to the new one. */
copybuf = malloc(width * bytes);
for (i = sy1; i < sy2; i++) {
gimp_pixel_rgn_get_row(&srcPR, copybuf, sx1, i, width);
gimp_pixel_rgn_set_row(&destPR, copybuf, sx1, i, width);
}
free(copybuf);
objects = my_config.density * (float) (width * height) /
(float) (((my_config.min_width + my_config.max_width) / 2) *
((my_config.min_height + my_config.max_height)) / 2);
for (i = 0; i < objects; i++) {
w = my_config.min_width + rand() * (double) (my_config.max_width -
my_config.min_width) / (double) RAND_MAX;
h = my_config.min_height + rand() * (double) (my_config.max_height -
my_config.min_height) / (double) RAND_MAX;
x = sx1 + rand() * (double) width / (double) RAND_MAX;
y = sy1 + rand() * (double) height / (double) RAND_MAX;
for (j = 0; j < bytes; j++) {
color[j] = rand() * 255. / (double) RAND_MAX;
}
draw_rectangle(tmp, &destPR, x, y, w, h, color,
rand() / (double) RAND_MAX);
if (!(i % 64)) {
gimp_progress_update((double) i / (double) objects);
}
}
/* update the timred region */
gimp_drawable_flush(drawable);
gimp_drawable_merge_shadow(drawable->id, TRUE);
gimp_drawable_update(drawable->id, sx1, sy1, sx2 - sx1, sy2 - sy1);
}
/***************************************************
* GUI stuff
*/
static void close_callback(GtkWidget * widget, gpointer data)
{
gtk_main_quit();
}
static void ok_callback(GtkWidget * widget, gpointer data)
{
run_flag = 1;
gtk_widget_destroy(GTK_WIDGET(data));
}
static void entry_callback(GtkWidget * widget, gpointer data)
{
if (data == &my_config.density)
my_config.density = atof(gtk_entry_get_text(GTK_ENTRY(widget)));
else if (data == &my_config.min_width)
my_config.min_width = atoi(gtk_entry_get_text(GTK_ENTRY(widget)));
else if (data == &my_config.max_width)
my_config.max_width = atoi(gtk_entry_get_text(GTK_ENTRY(widget)));
else if (data == &my_config.min_height)
my_config.min_height = atoi(gtk_entry_get_text(GTK_ENTRY(widget)));
else if (data == &my_config.max_height)
my_config.max_height = atoi(gtk_entry_get_text(GTK_ENTRY(widget)));
}
static gint dialog()
{
GtkWidget *dlg;
GtkWidget *button;
GtkWidget *label;
GtkWidget *entry;
GtkWidget *table;
gchar buffer[12];
gchar **argv;
gint argc;
argc = 1;
argv = g_new(gchar *, 1);
argv[0] = g_strdup("plasma");
gtk_init(&argc, &argv);
gtk_rc_parse (gimp_gtkrc ());
dlg = gtk_dialog_new();
gtk_window_set_title(GTK_WINDOW(dlg), "Figures");
gtk_window_position(GTK_WINDOW(dlg), GTK_WIN_POS_MOUSE);
gtk_signal_connect(GTK_OBJECT(dlg), "destroy",
(GtkSignalFunc) close_callback, NULL);
/* Action area */
button = gtk_button_new_with_label("OK");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) ok_callback,
dlg);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_grab_default(button);
gtk_widget_show(button);
button = gtk_button_new_with_label("Cancel");
GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
gtk_signal_connect_object(GTK_OBJECT(button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT(dlg));
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->action_area), button, TRUE, TRUE, 0);
gtk_widget_show(button);
/* The main table */
/* Set its size (y, x) */
table = gtk_table_new(5, 3, FALSE);
gtk_container_border_width(GTK_CONTAINER(table), 10);
gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dlg)->vbox), table, TRUE, TRUE, 0);
gtk_widget_show(table);
gtk_table_set_row_spacings(GTK_TABLE(table), 10);
gtk_table_set_col_spacings(GTK_TABLE(table), 10);
/*********************
* The density entry *
*********************/
label = gtk_label_new("Density:");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 0, 1, 1, 2, GTK_FILL, GTK_FILL, 0,
0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 1, 3, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 50, 0);
sprintf(buffer, "%0.2f", my_config.density);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback,
&my_config.density);
gtk_widget_show(entry);
/**********************
* The min/max labels *
**********************/
label = gtk_label_new("Min.");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 1, 2, 2, 3, GTK_FILL, GTK_FILL, 0,
0);
gtk_widget_show(label);
label = gtk_label_new("Max.");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 2, 3, 2, 3, GTK_FILL, GTK_FILL, 0,
0);
gtk_widget_show(label);
/************************
* The min_width entry: *
************************/
label = gtk_label_new("Width:");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 0, 1, 3, 4, GTK_FILL, GTK_FILL, 0,
0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 1, 2, 3, 4, GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 50, 0);
sprintf(buffer, "%i", my_config.min_width);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback, &my_config.min_width);
gtk_widget_show(entry);
/************************
* The max_width entry: *
************************/
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 2, 3, 3, 4, GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 50, 0);
sprintf(buffer, "%i", my_config.max_width);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback, &my_config.max_width);
gtk_widget_show(entry);
gtk_widget_show(dlg);
/************************
* The min_height entry: *
************************/
label = gtk_label_new("Height:");
gtk_misc_set_alignment(GTK_MISC(label), 0.0, 0.5);
gtk_table_attach(GTK_TABLE(table), label, 0, 1, 4, 5, GTK_FILL, GTK_FILL, 0,
0);
gtk_widget_show(label);
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 1, 2, 4, 5, GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 50, 0);
sprintf(buffer, "%i", my_config.min_height);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback, &my_config.min_height);
gtk_widget_show(entry);
/************************
* The max_height entry: *
************************/
entry = gtk_entry_new();
gtk_table_attach(GTK_TABLE(table), entry, 2, 3, 4, 5, GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
gtk_widget_set_usize(entry, 50, 0);
sprintf(buffer, "%i", my_config.max_height);
gtk_entry_set_text(GTK_ENTRY(entry), buffer);
gtk_signal_connect(GTK_OBJECT(entry), "changed",
(GtkSignalFunc) entry_callback, &my_config.max_height);
gtk_widget_show(entry);
gtk_widget_show(dlg);
gtk_main();
gdk_flush();
return run_flag;
}
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