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- /*
- * This is a plug-in for the GIMP.
- *
- * Generates clickable image maps.
- *
- * Copyright (C) 1998-1999 Maurits Rijk lpeek.mrijk@consunet.nl
- *
- * 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 <math.h>
-
- #include "config.h"
- #include "imap_circle.h"
- #include "libgimp/stdplugins-intl.h"
- #include "imap_main.h"
- #include "imap_misc.h"
- #include "imap_object_popup.h"
- #include "imap_table.h"
-
- #include "circle.xpm"
-
- static gboolean circle_is_valid(Object_t *obj);
- static Object_t *circle_clone(Object_t *obj);
- static void circle_assign(Object_t *obj, Object_t *des);
- static void circle_draw(Object_t* obj, GdkWindow *window, GdkGC* gc);
- static void circle_draw_sashes(Object_t* obj, GdkWindow *window, GdkGC* gc);
- static MoveSashFunc_t circle_near_sash(Object_t *obj, gint x, gint y);
- static gboolean circle_point_is_on(Object_t *obj, gint x, gint y);
- static void circle_get_dimensions(Object_t *obj, gint *x, gint *y,
- gint *width, gint *height);
- static void circle_resize(Object_t *obj, gint percentage_x, gint percentage_y);
- static void circle_move(Object_t *obj, gint dx, gint dy);
- static gpointer circle_create_info_widget(GtkWidget *frame);
- static void circle_fill_info_tab(Object_t *obj, gpointer data);
- static void circle_set_initial_focus(Object_t *obj, gpointer data);
- static void circle_update(Object_t* obj, gpointer data);
- static void circle_write_csim(Object_t* obj, gpointer param,
- OutputFunc_t output);
- static void circle_write_cern(Object_t* obj, gpointer param,
- OutputFunc_t output);
- static void circle_write_ncsa(Object_t* obj, gpointer param,
- OutputFunc_t output);
- static char** circle_get_icon_data(void);
-
- static ObjectClass_t circle_class = {
- N_("Circle"),
- NULL, /* info_dialog */
- NULL, /* icon */
- NULL, /* mask */
-
- circle_is_valid,
- NULL, /* circle_destruct */
- circle_clone,
- circle_assign,
- NULL, /* circle_normalize */
- circle_draw,
- circle_draw_sashes,
- circle_near_sash,
- circle_point_is_on,
- circle_get_dimensions,
- circle_resize,
- circle_move,
- circle_create_info_widget,
- circle_fill_info_tab, /* circle_update_info_widget */
- circle_fill_info_tab,
- circle_set_initial_focus,
- circle_update,
- circle_write_csim,
- circle_write_cern,
- circle_write_ncsa,
- object_do_popup,
- circle_get_icon_data
- };
-
- Object_t*
- create_circle(gint x, gint y, gint r)
- {
- Circle_t *circle = g_new(Circle_t, 1);
- circle->x = x;
- circle->y = y;
- circle->r = r;
- return object_init(&circle->obj, &circle_class);
- }
-
- static gboolean
- circle_is_valid(Object_t *obj)
- {
- return ObjectToCircle(obj)->r > 0;
- }
-
- static Object_t*
- circle_clone(Object_t *obj)
- {
- Circle_t *circle = ObjectToCircle(obj);
- Circle_t *clone = g_new(Circle_t, 1);
-
- clone->x = circle->x;
- clone->y = circle->y;
- clone->r = circle->r;
- return &clone->obj;
- }
-
- static void
- circle_assign(Object_t *obj, Object_t *des)
- {
- Circle_t *src_circle = ObjectToCircle(obj);
- Circle_t *des_circle = ObjectToCircle(des);
- des_circle->x = src_circle->x;
- des_circle->y = src_circle->y;
- des_circle->r = src_circle->r;
- }
-
- static void
- circle_draw(Object_t *obj, GdkWindow *window, GdkGC *gc)
- {
- Circle_t *circle = ObjectToCircle(obj);
- draw_circle(window, gc, FALSE, circle->x, circle->y, circle->r);
- }
-
- static void
- circle_draw_sashes(Object_t *obj, GdkWindow *window, GdkGC *gc)
- {
- Circle_t *circle = ObjectToCircle(obj);
- draw_sash(window, gc, circle->x - circle->r, circle->y - circle->r);
- draw_sash(window, gc, circle->x + circle->r, circle->y - circle->r);
- draw_sash(window, gc, circle->x - circle->r, circle->y + circle->r);
- draw_sash(window, gc, circle->x + circle->r, circle->y + circle->r);
- }
-
- static gint sash_x;
- static gint sash_y;
-
- static void
- move_sash(Object_t *obj, gint dx, gint dy)
- {
- Circle_t *circle = ObjectToCircle(obj);
- gint rx, ry;
- sash_x += dx;
- sash_y += dy;
-
- rx = abs(circle->x - sash_x);
- ry = abs(circle->y - sash_y);
- circle->r = (rx > ry) ? rx : ry;
- }
-
- static void
- circle_resize(Object_t *obj, gint percentage_x, gint percentage_y)
- {
- Circle_t *circle = ObjectToCircle(obj);
- circle->x = circle->x * percentage_x / 100;
- circle->y = circle->y * percentage_y / 100;
- circle->r = circle->r * ((percentage_x < percentage_y)
- ? percentage_x : percentage_y) / 100;
- }
-
- static MoveSashFunc_t
- circle_near_sash(Object_t *obj, gint x, gint y)
- {
- Circle_t *circle = ObjectToCircle(obj);
- sash_x = x;
- sash_y = y;
- if (near_sash(circle->x - circle->r, circle->y - circle->r, x, y) ||
- near_sash(circle->x + circle->r, circle->y - circle->r, x, y) ||
- near_sash(circle->x - circle->r, circle->y + circle->r, x, y) ||
- near_sash(circle->x + circle->r, circle->y + circle->r, x, y))
- return move_sash;
- return NULL;
- }
-
- static gboolean
- circle_point_is_on(Object_t *obj, gint x, gint y)
- {
- Circle_t *circle = ObjectToCircle(obj);
- x -= circle->x;
- y -= circle->y;
- return x * x + y * y <= circle->r * circle->r;
- }
-
- static void
- circle_get_dimensions(Object_t *obj, gint *x, gint *y,
- gint *width, gint *height)
- {
- Circle_t *circle = ObjectToCircle(obj);
- *x = circle->x - circle->r;
- *y = circle->y - circle->r;
- *width = *height = 2 * circle->r;
- }
-
- static void
- circle_move(Object_t *obj, gint dx, gint dy)
- {
- Circle_t *circle = ObjectToCircle(obj);
- circle->x += dx;
- circle->y += dy;
- }
-
- typedef struct {
- Object_t *obj;
- GtkWidget *x;
- GtkWidget *y;
- GtkWidget *r;
- } CircleProperties_t;
-
- static void
- x_changed_cb(GtkWidget *widget, gpointer data)
- {
- Object_t *obj = ((CircleProperties_t*) data)->obj;
- gint x = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
- ObjectToCircle(obj)->x = x;
- edit_area_info_dialog_emit_geometry_signal(obj->class->info_dialog);
- }
-
- static void
- y_changed_cb(GtkWidget *widget, gpointer data)
- {
- Object_t *obj = ((CircleProperties_t*) data)->obj;
- gint y = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
- ObjectToCircle(obj)->y = y;
- edit_area_info_dialog_emit_geometry_signal(obj->class->info_dialog);
- }
-
- static void
- r_changed_cb(GtkWidget *widget, gpointer data)
- {
- Object_t *obj = ((CircleProperties_t*) data)->obj;
- gint r = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(widget));
- ObjectToCircle(obj)->r = r;
- edit_area_info_dialog_emit_geometry_signal(obj->class->info_dialog);
- }
-
- static gpointer
- circle_create_info_widget(GtkWidget *frame)
- {
- CircleProperties_t *props = g_new(CircleProperties_t, 1);
- GtkWidget *table;
- gint max_width = get_image_width();
- gint max_height = get_image_height();
-
- table = gtk_table_new(3, 3, FALSE);
- gtk_container_add(GTK_CONTAINER(frame), table);
- gtk_container_set_border_width(GTK_CONTAINER(table), 10);
-
- gtk_table_set_row_spacings(GTK_TABLE(table), 10);
- gtk_table_set_col_spacings(GTK_TABLE(table), 10);
- gtk_widget_show(table);
-
- create_label_in_table(table, 0, 0, _("Center x:"));
- props->x = create_spin_button_in_table(table, 0, 1, 1, 0, max_width - 1);
- gtk_signal_connect(GTK_OBJECT(props->x), "changed",
- (GtkSignalFunc) x_changed_cb, (gpointer) props);
- create_label_in_table(table, 0, 2, _("pixels"));
-
- create_label_in_table(table, 1, 0, _("Center y:"));
- props->y = create_spin_button_in_table(table, 1, 1, 1, 0, max_height - 1);
- gtk_signal_connect(GTK_OBJECT(props->y), "changed",
- (GtkSignalFunc) y_changed_cb, (gpointer) props);
- create_label_in_table(table, 1, 2, _("pixels"));
-
- create_label_in_table(table, 2, 0, _("Radius:"));
- props->r = create_spin_button_in_table(table, 2, 1, 1, 1, G_MAXINT);
- gtk_signal_connect(GTK_OBJECT(props->r), "changed",
- (GtkSignalFunc) r_changed_cb, (gpointer) props);
- create_label_in_table(table, 2, 2, _("pixels"));
-
- return props;
- }
-
- static void
- circle_fill_info_tab(Object_t *obj, gpointer data)
- {
- Circle_t *circle = ObjectToCircle(obj);
- CircleProperties_t *props = (CircleProperties_t*) data;
-
- props->obj = obj;
- gtk_spin_button_set_value(GTK_SPIN_BUTTON(props->x), circle->x);
- gtk_spin_button_set_value(GTK_SPIN_BUTTON(props->y), circle->y);
- gtk_spin_button_set_value(GTK_SPIN_BUTTON(props->r), circle->r);
- }
-
- static void
- circle_set_initial_focus(Object_t *obj, gpointer data)
- {
- CircleProperties_t *props = (CircleProperties_t*) data;
- gtk_widget_grab_focus(props->x);
- }
-
- static void
- circle_update(Object_t* obj, gpointer data)
- {
- Circle_t *circle = ObjectToCircle(obj);
- CircleProperties_t *props = (CircleProperties_t*) data;
-
- circle->x = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(props->x));
- circle->y = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(props->y));
- circle->r = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(props->r));
- }
-
- static void
- circle_write_csim(Object_t *obj, gpointer param, OutputFunc_t output)
- {
- Circle_t *circle = ObjectToCircle(obj);
- output(param, "\"CIRCLE\" COORDS=\"%d,%d,%d\"", circle->x, circle->y,
- circle->r);
- }
-
- static void
- circle_write_cern(Object_t *obj, gpointer param, OutputFunc_t output)
- {
- Circle_t *circle = ObjectToCircle(obj);
- output(param, "circ (%d,%d) %d", circle->x, circle->y, circle->r);
- }
-
- static void
- circle_write_ncsa(Object_t *obj, gpointer param, OutputFunc_t output)
- {
- Circle_t *circle = ObjectToCircle(obj);
- output(param, "circle %s %d,%d %d,%d", obj->url,
- circle->x, circle->y, circle->x, circle->y + circle->r);
- }
-
- static char**
- circle_get_icon_data(void)
- {
- return circle_xpm;
- }
-
- static gint _start_x, _start_y;
-
- static Object_t*
- circle_factory_create_object1(gint x, gint y)
- {
- _start_x = x;
- _start_y = y;
- return create_circle(x, y, 0);
- }
-
- static void
- circle_factory_set_xy1(Object_t *obj, guint state, gint x, gint y)
- {
- Circle_t *circle = ObjectToCircle(obj);
-
- circle->x = (_start_x + x) / 2;
- circle->y = (_start_y + y) / 2;
- x -= _start_x;
- y -= _start_y;
- circle->r = (gint) sqrt(x * x + y * y) / 2;
-
- main_set_dimension(circle->r, circle->r);
- }
-
- static ObjectFactory_t circle_factory1 = {
- NULL, /* Object pointer */
- NULL, /* Finish func */
- NULL, /* Cancel func */
- circle_factory_create_object1,
- circle_factory_set_xy1
- };
-
- static Object_t*
- circle_factory_create_object2(gint x, gint y)
- {
- return create_circle(x, y, 0);
- }
-
- static void
- circle_factory_set_xy2(Object_t *obj, guint state, gint x, gint y)
- {
- Circle_t *circle = ObjectToCircle(obj);
-
- x -= circle->x;
- y -= circle->y;
- circle->r = (gint) sqrt(x * x + y * y);
-
- main_set_dimension(circle->r, circle->r);
- }
-
- static ObjectFactory_t circle_factory2 = {
- NULL, /* Object pointer */
- NULL, /* Finish func */
- NULL, /* Cancel func */
- circle_factory_create_object2,
- circle_factory_set_xy2
- };
-
- ObjectFactory_t*
- get_circle_factory(guint state)
- {
- return (state & GDK_SHIFT_MASK) ? &circle_factory1 : &circle_factory2;
- }
-