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rgnctrl.c
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C/C++ Source or Header
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1991-01-03
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8KB
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289 lines
#ifndef lint
static char SccsId[] = "%W% %G%";
#endif
/* Module: rgnctrl.c (Region Control)
* Purpose: Respond to region commands from various sources
* Subroutine: point_region() returns: void
* Subroutine: ascii_region() returns: void
* Subroutine: select_region() returns: void
* Copyright: 1989 Smithsonian Astrophysical Observatory
* You may do anything you like with this file except remove
* this copyright. The Smithsonian Astrophysical Observatory
* makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without
* express or implied warranty.
* Modified: {0} Michael VanHilst initial version 26 May 1989
* {n} <who> -- <does what> -- <when>
*/
#include <stdio.h> /* Define stderr, NULL */
#include <X11/Xlib.h> /* X window stuff */
#include <X11/Xutil.h> /* X window manager stuff, visuals */
#include <X11/keysym.h>
#include <X11/keysymdef.h>
#include "hfiles/constant.h" /* Define codes */
#include "hfiles/struct.h" /* Declare structure types */
#include "hfiles/extern.h" /* Extern main parameter structures */
struct cursorRec *cycle_region = 0;
#ifdef ANSIC
void point_region( XButtonEvent *xbutton);
void ascii_region( XKeyEvent *xkey, KeySym keysym);
static void cycle_regions();
static void reset_regions();
#else
struct cursorRec *region_indicated_by_pointer();
int match_region();
void unsave_region(), set_cursor_file_coords(), disp_dispbox();
void save_cursor_as_region(), disp_region(), unsave_region();
void enable_annuli_button(), delete_annuli(), erase_cursor();
void copy_region_to_cursor(), disp_cursor(), d_transform(), draw_magnifier();
void label_region_cycle_magnifier(), touch_submenu_button();
void set_submenu_toggle(), enable_ortho_button();
void toggle_region_labeling(), toggle_region_visibility();
void write_regions(), read_regions(), free_cursor();
static void cycle_regions(), reset_regions();
#endif
/* Subroutine: point_region
* Purpose: Respond to a mouse activated request for a point region
* Note: In cursor point mode the mouse buttons map directly:
* left - save for include, middle - save for exclude, right - delete
*/
#ifdef ANSIC
void point_region ( XButtonEvent *xbutton )
#else
void point_region ( xbutton )
XButtonEvent *xbutton;
#endif
{
struct cursorRec *region;
/* Right button is a delete request in point cursor mode */
if( xbutton->button == Button3 ) {
/* See if mouse indicates a region to delete */
region = region_indicated_by_pointer(&cursor, xbutton->x, xbutton->y, 1);
if( region != NULL ) {
unsave_region(&cursor, region);
disp_dispbox();
}
} else if( (xbutton->button == Button1) || (xbutton->button == Button2) ) {
cursor.win.x = xbutton->x;
cursor.win.y = xbutton->y;
cursor.win.X = (double)cursor.win.x + 0.5;
cursor.win.Y = (double)cursor.win.y + 0.5;
/* Force file coordinates into agreement with window coordinates */
set_cursor_file_coords(&cursor, &coord.disptofile, 1);
/* Save cursor as a region */
if( xbutton->button == Button1 )
save_cursor_as_region(&cursor, 0);
else
save_cursor_as_region(&cursor, 1);
cursor.index = cursor.next_region->index;
disp_region(cursor.next_region);
}
}
/* Subroutine: ascii_region
* Purpose: Keyboard control of regions
*/
#ifdef ANSIC
void ascii_region ( XKeyEvent *xkey, KeySym keysym )
#else
void ascii_region ( xkey, keysym )
XKeyEvent *xkey;
KeySym keysym;
#endif
{
int exclude;
struct cursorRec *region;
if( cursor.type == COP_Point ) {
cursor.win.x = xkey->x;
cursor.win.y = xkey->y;
cursor.win.X = (double)cursor.win.x + 0.5;
cursor.win.Y = (double)cursor.win.y + 0.5;
}
/* Initialize values used or switched in overlapping functions */
region = cursor.next_region;
exclude = 0;
switch( keysym ) {
case XK_E:
case XK_e:
exclude = 1;
case XK_S:
case XK_s:
/* Force file coordinates into agreement with window coordinates */
set_cursor_file_coords(&cursor, &coord.disptofile, 0);
set_cursor_file_coords(&cursor, &coord.disptofile, 1);
save_cursor_as_region(&cursor, exclude);
disp_region(cursor.next_region);
break;
case XK_D:
case XK_d:
region = region_indicated_by_pointer(&cursor, xkey->x, xkey->y, 0);
case XK_Delete:
if( region != NULL ) {
unsave_region(&cursor, region);
disp_dispbox();
}
break;
default:
break;
}
}
/* Subroutine: select_region
* Purpose: Act on commands from the region button panel
*/
void select_region ( )
{
switch( control.response[1] ) {
/* This case comes up when the main menu button is pressed */
case 0:
break;
case ROP_Cycle:
cycle_regions();
break;
case ROP_Label:
toggle_region_labeling();
break;
case ROP_Omit:
if( match_region(&cursor, cycle_region) ) {
unsave_region(&cursor, cycle_region);
/* Redisplay without the omitted region */
disp_dispbox();
}
break;
case ROP_View:
toggle_region_visibility();
break;
case ROP_Reset:
reset_regions();
break;
case ROP_Write:
write_regions(&cursor, &img, img.file_type);
break;
case ROP_Read:
read_regions();
break;
default:
break;
}
}
/* Subroutine: cycle_regions
* Purpose: Cylce cursor through saved regions
*/
static void cycle_regions()
{
float bufx, bufy;
int annuli_disabled, annuli_on;
/* There must be saved regions through which to cycle */
if( cursor.next_region == NULL ) {
(void)fprintf(stderr, "Warning: no saved regions.\n");
return;
}
/* Determine if annuli button is currently disabled or on */
annuli_on = 0;
if( (cursor.type != COP_Point) && (cursor.type != COP_Polygon) ) {
annuli_disabled = 0;
if( cursor.annuli )
annuli_on = 1;
} else
annuli_disabled = 1;
/* Erase the cursor while we still know it */
if( cursor.overwrites_image_data ) {
/* Redraw image and any saved cursors, but not the cursor */
if( cursor.next_annulus != NULL )
delete_annuli (&cursor, 0);
cursor.annuli = 0;
cursor.point_cnt = 0;
cursor.rectangle_cnt = 0;
disp_dispbox();
} else {
if( cursor.next_annulus != NULL )
/* Delete_annuli does an erase cursor */
delete_annuli(&cursor, 0);
else
erase_cursor(&cursor);
}
/* Get next region in cycle */
if( cycle_region == NULL )
cycle_region = cursor.next_region;
else
cycle_region = cycle_region->next_region;
/* If at end of list, go back to head of list */
if( cycle_region == NULL )
cycle_region = cursor.next_region;
/* Make cursor be a copy of this region */
copy_region_to_cursor(&cursor, cycle_region);
/* If this is a text cursor, set the editor info for this string */
if( cursor.type == COP_Text )
reload_textcursor();
if( cursor.type != COP_Point )
/* Draw the cursor */
disp_cursor(&cursor);
/* Show exact region position in magnifier */
d_transform(&coord.disptobuf, cursor.win.X, cursor.win.Y, &bufx, &bufy);
draw_magnifier((double)bufx, (double)bufy);
/* Label what we just drew */
label_region_cycle_magnifier (cycle_region, 1);
/* Make sure cursor buttons are correct */
touch_submenu_button(COP, cursor.type);
if( (cursor.type == COP_Box) ||
(cursor.type == COP_Circle) ||
(cursor.type == COP_Ellipse) ) {
if( annuli_disabled )
enable_annuli_button(1);
if( annuli_on != cursor.annuli )
set_submenu_toggle(COP, COP_Annuli, cursor.annuli);
if( cursor.type == COP_Circle )
enable_ortho_button(0);
else
enable_ortho_button(1);
} else if( !annuli_disabled ) {
enable_annuli_button(0);
enable_ortho_button(0);
}
}
/* Subroutine: reset_regions
* Purpose: Reset all save cursor areas
*/
static void reset_regions()
{
struct cursorRec *region, *next, *annulus;
if( (next = cursor.next_region) != NULL ) {
while( next != NULL ) {
region = next;
next = next->next_region;
/* Free deleted region and any annuli it might have */
do {
annulus = region->next_annulus;
free_cursor(region);
region = annulus;
} while( region != NULL );
}
/* Reset cycle pointer */
cycle_region = NULL;
cursor.next_region = NULL;
/* Redisplay image without the regions */
disp_dispbox();
}
}