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line_editor.c
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/* line_editor.c */
/************************************************************
* *
* Permission is hereby granted to any individual or *
* institution for use, copying, or redistribution of *
* the xgobi code and associated documentation, provided *
* that such code and documentation are not sold for *
* profit and the following copyright notice is retained *
* in the code and documentation: *
* Copyright (c) 1990, ..., 1996 Bellcore *
* *
* We welcome your questions and comments, and request *
* that you share any modifications with us. *
* *
* Deborah F. Swayne Dianne Cook *
* dfs@research.att.com dicook@iastate.edu *
* (973) 360-8423 www.public.iastate.edu/~dicook/ *
* *
* Andreas Buja *
* andreas@research.att.com *
* www.research.att.com/~andreas/ *
* *
************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "xincludes.h"
#include "xgobitypes.h"
#include "xgobivars.h"
#include "xgobiexterns.h"
static Widget line_edit_panel, le_cmd[5];
#define ADD le_cmd[0]
#define DELETE le_cmd[1]
#define SHOW_LINES le_cmd[2]
#define REMOVE_ALL le_cmd[3]
#define INCLUDE_IMP le_cmd[4]
XSegment *connecting_segs;
XSegment *arrowhead_segs;
Boolean is_le_adding, is_le_deleting;
static int *avec, *bvec;
static int le_start = -1, le_nearest_pt = -1, le_nearest_line = -1;
/* Draw lines to missing/imputed values or don't */
Boolean plot_imputed_values = True;
/* --------- Dynamic allocation section ----------- */
void
alloc_line_edit_arrays(xgobidata *xg)
/*
* Dynamically allocate arrays.
*/
{
/*
* It might be a good idea to use nrows_in_plot rather
* than nrows for these. It would require a lot of
* Reallocing, but would enable XGobi to handle larger
* matrices.
*/
Cardinal nl = (Cardinal) xg->nlines;
connecting_segs = (XSegment *)
XtMalloc(nl * sizeof(XSegment));
/* for suggesting a directional arrow */
arrowhead_segs = (XSegment *)
XtMalloc(nl * sizeof(XSegment));
xg->line_color_ids = (unsigned long *)
XtMalloc(nl * sizeof(unsigned long));
xg->line_color_now = (unsigned long *)
XtMalloc(nl * sizeof(unsigned long));
xg->line_color_prev = (unsigned long *)
XtMalloc(nl * sizeof(unsigned long));
xg->xed_by_new_brush = (unsigned short *)
XtMalloc(nl * sizeof(unsigned short));
}
void
free_line_edit_arrays(xgobidata *xg)
/*
* Dynamically free arrays.
*/
{
XtFree((XtPointer) connecting_segs);
XtFree((XtPointer) arrowhead_segs);
XtFree((XtPointer) xg->line_color_ids);
XtFree((XtPointer) xg->line_color_now);
XtFree((XtPointer) xg->line_color_prev);
XtFree((XtPointer) xg->xed_by_new_brush);
}
void
realloc_lines(xgobidata *xg)
{
xg->connecting_lines = (connect_lines *)
XtRealloc((XtPointer) xg->connecting_lines,
(unsigned) xg->nlines * sizeof(connect_lines));
connecting_segs = (XSegment *)
XtRealloc((XtPointer) connecting_segs,
(unsigned) xg->nlines * sizeof(XSegment));
arrowhead_segs = (XSegment *)
XtRealloc((XtPointer) arrowhead_segs,
(unsigned) xg->nlines * sizeof(XSegment));
xg->line_color_ids = (unsigned long *)
XtRealloc((XtPointer) xg->line_color_ids,
(unsigned) xg->nlines * sizeof(unsigned long));
xg->line_color_now = (unsigned long *)
XtRealloc((XtPointer) xg->line_color_now,
(unsigned) xg->nlines * sizeof(unsigned long));
xg->line_color_prev = (unsigned long *)
XtRealloc((XtPointer) xg->line_color_prev,
(unsigned) xg->nlines * sizeof(unsigned long));
xg->xed_by_new_brush = (unsigned short *)
XtRealloc((XtPointer) xg->xed_by_new_brush,
(unsigned) xg->nlines * sizeof(unsigned short));
}
/* --------- End of dynamic allocation section ----------- */
void
create_default_lines(xgobidata *xg)
{
int i;
xg->nlines = xg->nrows - 1;
xg->connecting_lines = (connect_lines *) XtRealloc(
(XtPointer) xg->connecting_lines,
(Cardinal) xg->nlines * sizeof(connect_lines));
for (i=0; i<xg->nlines; i++)
{
xg->connecting_lines[i].a = i+1;
xg->connecting_lines[i].b = i+2;
}
}
void
init_line_edit_vars(xgobidata *xg)
{
static Boolean firsttime = True;
if (firsttime)
{
is_le_deleting = True;
is_le_adding = False;
firsttime = False;
}
xg->is_line_editing = False;
}
int
sort_by_abvecs(const void *arg1, const void *arg2)
{
int val = 0;
int *x1 = (int *) arg1;
int *x2 = (int *) arg2;
if ( (avec[*x1] < avec[*x2]) ||
(avec[*x1] == avec[*x2] && bvec[*x1] < bvec[*x2]) )
{
val = -1;
}
else if ( (avec[*x1] > avec[*x2]) ||
(avec[*x1] == avec[*x2] && bvec[*x1] > bvec[*x2]) )
{
val = 1;
}
return(val);
}
void
sort_connecting_lines(xgobidata *xg)
{
int i;
unsigned long *tvec;
int *indx;
/*
* sort_by_abvecs is used by qsort to put indx in the order of the
* b's within the a's.
*/
indx = (int *) XtMalloc((Cardinal) xg->nlines * sizeof(int));
avec = (int *) XtMalloc((Cardinal) xg->nlines * sizeof(int));
bvec = (int *) XtMalloc((Cardinal) xg->nlines * sizeof(int));
tvec = (unsigned long *) XtMalloc((Cardinal) xg->nlines * sizeof(int));
for (i=0; i<xg->nlines; i++)
{
avec[i] = xg->connecting_lines[i].a;
bvec[i] = xg->connecting_lines[i].b;
indx[i] = i;
}
qsort((char *) indx, xg->nlines, sizeof(int), sort_by_abvecs);
for (i=0; i<xg->nlines; i++)
{
xg->connecting_lines[i].a = avec[indx[i]];
xg->connecting_lines[i].b = bvec[indx[i]];
}
for (i=0; i<xg->nlines; i++)
tvec[i] = xg->line_color_ids[i];
for (i=0; i<xg->nlines; i++)
xg->line_color_ids[i] = tvec[indx[i]];
for (i=0; i<xg->nlines; i++)
tvec[i] = xg->line_color_now[i];
for (i=0; i<xg->nlines; i++)
xg->line_color_now[i] = tvec[indx[i]];
for (i=0; i<xg->nlines; i++)
tvec[i] = xg->line_color_prev[i];
for (i=0; i<xg->nlines; i++)
xg->line_color_prev[i] = tvec[indx[i]];
XtFree((XtPointer) avec);
XtFree((XtPointer) bvec);
XtFree((XtPointer) tvec);
XtFree((XtPointer) indx);
}
Boolean
plotted_var_missing(int from, int to, xgobidata *xg)
{
Boolean missing = False;
if (xg->is_plotting1d) {
if (xg->is_missing[from][xg->plot1d_vars.y] ||
xg->is_missing[to][xg->plot1d_vars.y])
{
missing = True;
}
}
else if (xg->is_xyplotting) {
if (xg->is_missing[from][xg->xy_vars.x] ||
xg->is_missing[to][xg->xy_vars.x] ||
xg->is_missing[from][xg->xy_vars.y] ||
xg->is_missing[to][xg->xy_vars.y])
{
missing = True;
}
}
else if (xg->is_spinning) {
if (xg->is_missing[from][xg->spin_vars.x] ||
xg->is_missing[to][xg->spin_vars.x] ||
xg->is_missing[from][xg->spin_vars.y] ||
xg->is_missing[to][xg->spin_vars.y] ||
xg->is_missing[from][xg->spin_vars.z] ||
xg->is_missing[to][xg->spin_vars.z])
{
missing = True;
}
}
else if (xg->is_touring) {
int i;
for (i=0; i<xg->numvars_t; i++) {
if (xg->is_missing[from][xg->tour_vars[i]] ||
xg->is_missing[to][xg->tour_vars[i]])
{
missing = True;
}
}
}
return missing;
}
int
find_nearest_line(icoords *cursor_pos, xgobidata *xg)
{
int sqdist, near, j, lineid, xdist;
int from, to;
icoords a, b, distab, distac, d;
float proj;
Boolean doit;
lineid = -1;
if (xg->nlines) {
xdist = sqdist = near = 1000 * 1000;
for (j=0; j<xg->nlines; j++) {
from = xg->connecting_lines[j].a - 1;
to = xg->connecting_lines[j].b - 1;
doit = True;
if (!plot_imputed_values && plotted_var_missing(from, to, xg))
doit = False;
/* If either from or to is excluded or erased, move on */
else if (xg->ncols == xg->ncols_used) {
if (xg->clusv[(int) GROUPID(from)].excluded)
doit = False;
else if (xg->clusv[(int) GROUPID(to)].excluded)
doit = False;
}
if (doit && (xg->erased[from] || xg->erased[to]))
doit = False;
if (doit) {
a.x = xg->screen[from].x;
a.y = xg->screen[from].y;
b.x = xg->screen[to].x;
b.y = xg->screen[to].y;
distab.x = b.x - a.x;
distab.y = b.y - a.y;
distac.x = cursor_pos->x - a.x;
distac.y = cursor_pos->y - a.y;
/* vertical lines */
if (distab.x == 0 && distab.y != 0) {
sqdist = distac.x * distac.x;
if (BETWEEN(a.y, b.y, cursor_pos->y))
;
else {
int yd = MIN(abs(distac.y), abs(cursor_pos->y - b.y));
sqdist += (yd * yd);
}
if (sqdist <= near) {
near = sqdist;
lineid = j;
}
}
/* horizontal lines */
else if (distab.y == 0 && distab.x != 0) {
sqdist = distac.y * distac.y ;
if (sqdist <= near && (int) fabs((float) distac.x) < xdist) {
near = sqdist;
xdist = (int) fabs((float) distac.x) ;
lineid = j;
}
}
/* other lines */
else if (distab.x != 0 && distab.y != 0) {
proj = ((float) ((distac.x * distab.x) +
(distac.y * distab.y))) /
((float) ((distab.x * distab.x) +
(distab.y * distab.y)));
d.x = (int) (proj * (float) (b.x - a.x)) + a.x;
d.y = (int) (proj * (float) (b.y - a.y)) + a.y;
if (BETWEEN(a.x, b.x, d.x) && BETWEEN(a.y, b.y, d.y)) {
sqdist = (cursor_pos->x - d.x) * (cursor_pos->x - d.x) +
(cursor_pos->y - d.y) * (cursor_pos->y - d.y);
} else {
sqdist = MIN(
(cursor_pos->x - a.x) * (cursor_pos->x - a.x) +
(cursor_pos->y - a.y) * (cursor_pos->y - a.y),
(cursor_pos->x - b.x) * (cursor_pos->x - b.x) +
(cursor_pos->y - b.y) * (cursor_pos->y - b.y) );
}
if (sqdist < near) {
near = sqdist;
lineid = j;
}
}
}
}
}
return(lineid);
}
void
line_edit_proc(xgobidata *xg)
{
int root_x, root_y;
unsigned int kb;
Window root, child;
icoords cpos;
static int ocpos_x = 0, ocpos_y = 0;
static int icount = 0;
/*
* Get the current pointer position.
*/
if (XQueryPointer(display, xg->plot_window, &root, &child,
&root_x, &root_y, &cpos.x, &cpos.y, &kb))
{
/*
* If the pointer is inside the plotting region ...
*/
if ((0 < cpos.x && cpos.x < xg->max.x) &&
(0 < cpos.y && cpos.y < xg->max.y))
{
icount = 1;
/*
* If the pointer has moved ...
*/
if ((cpos.x != ocpos_x) || (cpos.y != ocpos_y))
{
ocpos_x = cpos.x;
ocpos_y = cpos.y;
if (is_le_adding)
le_nearest_pt = find_nearest_point(&cpos, xg);
else if (is_le_deleting &&
(xg->connect_the_points||xg->plot_the_arrows))
{
le_nearest_line = find_nearest_line(&cpos, xg);
}
quickplot_once(xg);
}
}
else
{
le_nearest_pt = -1;
le_nearest_line = -1;
if (icount)
{
/*
* Plot once ... then there won't be an id in the plot
* if the cursor is outside the plot window.
*/
quickplot_once(xg);
icount = 0;
}
}
}
}
void
add_line(int a, int b, xgobidata *xg)
{
int n = xg->nlines;
xg->nlines++;
realloc_lines(xg);
xg->connecting_lines[n].a = a+1;
xg->connecting_lines[n].b = b+1;
xg->line_color_now[n] = plotcolors.fg;
xg->line_color_ids[n] = plotcolors.fg;
xg->line_color_prev[n] = plotcolors.fg;
sort_connecting_lines(xg);
}
/* ARGSUSED */
XtEventHandler
add_line_button(Widget w, xgobidata *xg, XEvent *evnt, Boolean *dispatch)
{
XButtonEvent *xbutton = (XButtonEvent *) evnt;
int root_x, root_y;
unsigned int kb;
Window root, child;
icoords cpos;
static int last_addeda = -1, last_addedb = -1;
int i;
switch (xbutton->type) {
case ButtonPress:
if (xbutton->button == 1) {
if (le_nearest_pt != -1) {
/*
* Get the current pointer position.
*/
if (XQueryPointer(display, xg->plot_window, &root, &child,
&root_x, &root_y, &cpos.x, &cpos.y, &kb))
{
le_nearest_pt = find_nearest_point(&cpos, xg);
}
}
le_start = le_nearest_pt;
}
else if (xbutton->button == 2 &&
last_addeda > -1 && last_addedb > -1)
/*
* delete most recently added line, which is at
* the end of the connecting_lines[] structure
*/
{
int link_to_remove;
for (i=0; i<xg->nlines; i++) {
if (xg->connecting_lines[i].a == last_addeda &&
xg->connecting_lines[i].b == last_addedb)
{
link_to_remove = i;
break;
}
}
for (i=link_to_remove; i<(xg->nlines-1); i++)
{
xg->connecting_lines[i].a = xg->connecting_lines[i+1].a;
xg->connecting_lines[i].b = xg->connecting_lines[i+1].b;
xg->line_color_now[i] = xg->line_color_now[i+1];
xg->line_color_ids[i] = xg->line_color_ids[i+1];
xg->line_color_prev[i] = xg->line_color_prev[i+1];
}
xg->nlines--;
realloc_lines(xg);
last_addeda = last_addedb = -1;
}
break;
case ButtonRelease:
if (xbutton->button == 1) {
if (le_start != -1 && le_nearest_pt != -1 &&
(le_nearest_pt != le_start) )
{
if (le_start < le_nearest_pt)
add_line(le_start, le_nearest_pt, xg);
else
add_line(le_nearest_pt, le_start, xg);
last_addeda = xg->connecting_lines[xg->nlines-1].a;
last_addedb = xg->connecting_lines[xg->nlines-1].b;
}
le_start = -1;
le_nearest_pt = -1;
}
break;
}
plot_once(xg);
}
/* ARGSUSED */
static XtEventHandler
delete_line_button(Widget w, xgobidata *xg, XEvent *evnt, Boolean *dispatch)
{
int root_x, root_y;
unsigned int kb;
Window root, child;
icoords cpos;
XButtonEvent *xbutton = (XButtonEvent *) evnt;
int i;
static int last_deleteda = -1, last_deletedb = -1;
static unsigned long last_color_now, last_color_ids, last_color_prev;
if (xbutton->type == ButtonPress)
{
if (xbutton->button == 1 && le_nearest_line > -1)
{
last_deleteda = xg->connecting_lines[le_nearest_line].a;
last_deletedb = xg->connecting_lines[le_nearest_line].b;
last_color_now = xg->line_color_now[le_nearest_line];
last_color_ids = xg->line_color_ids[le_nearest_line];
last_color_prev = xg->line_color_prev[le_nearest_line];
for (i=le_nearest_line; i<(xg->nlines-1); i++)
{
xg->connecting_lines[i].a = xg->connecting_lines[i+1].a;
xg->connecting_lines[i].b = xg->connecting_lines[i+1].b;
xg->line_color_now[i] = xg->line_color_now[i+1];
xg->line_color_ids[i] = xg->line_color_ids[i+1];
xg->line_color_prev[i] = xg->line_color_prev[i+1];
}
xg->nlines--;
realloc_lines(xg);
/*
* Get the current pointer position.
*/
if (XQueryPointer(display, xg->plot_window, &root, &child,
&root_x, &root_y, &cpos.x, &cpos.y, &kb))
{
le_nearest_line = find_nearest_line(&cpos, xg);
}
}
else if (xbutton->button == 2 && last_deleteda > -1)
{
xg->nlines++;
realloc_lines(xg);
xg->connecting_lines[xg->nlines-1].a = last_deleteda;
xg->connecting_lines[xg->nlines-1].b = last_deletedb;
last_deleteda = last_deletedb = -1;
xg->line_color_now[xg->nlines-1] = last_color_now;
xg->line_color_ids[xg->nlines-1] = last_color_ids;
xg->line_color_prev[xg->nlines-1] = last_color_prev;
}
}
plot_once(xg);
}
void
map_line_edit(xgobidata *xg)
{
if (xg->is_line_editing)
XtMapWidget(line_edit_panel);
else
XtUnmapWidget(line_edit_panel);
}
/* ARGSUSED */
XtCallbackProc
add_lines_cback(Widget w, xgobidata *xg, XtPointer callback_data)
/*
* Initiate line adding mode.
*/
{
if (!is_le_adding)
{
is_le_adding = True;
le_start = -1;
XtAddEventHandler(xg->workspace,
ButtonPressMask | ButtonReleaseMask,
FALSE, (XtEventHandler) add_line_button, (XtPointer) xg);
XtMapWidget(xg->le_add_mouse);
}
else
{
XtRemoveEventHandler(xg->workspace,
XtAllEvents,
TRUE, (XtEventHandler) add_line_button, (XtPointer) xg);
is_le_adding = False;
le_start = -1;
XtUnmapWidget(xg->le_add_mouse);
}
setToggleBitmap(w, is_le_adding);
}
/* ARGSUSED */
XtCallbackProc
delete_lines_cback(Widget w, xgobidata *xg, XtPointer callback_data)
/*
* Initiate line deletion mode
*/
{
if (!is_le_deleting)
{
is_le_deleting = True;
XtAddEventHandler(xg->workspace,
ButtonPressMask | ButtonReleaseMask,
FALSE, (XtEventHandler) delete_line_button, (XtPointer) xg);
XtMapWidget(xg->le_delete_mouse);
le_nearest_line = -1;
}
else
{
XtRemoveEventHandler(xg->workspace,
XtAllEvents, TRUE,
(XtEventHandler) delete_line_button, (XtPointer) xg);
is_le_deleting = False;
le_start = -1;
XtUnmapWidget(xg->le_delete_mouse);
}
setToggleBitmap(w, is_le_deleting);
}
void
set_showlines(Boolean lgl)
{
/*
* This is needed because we're going to duplicate
* this button on the line editing panel, and they
* both need to show the same state, but we don't
* want to call the callback twice.
*/
XtVaSetValues(SHOW_LINES, XtNstate, lgl, NULL);
setToggleBitmap(SHOW_LINES, lgl);
}
/* ARGSUSED */
XtCallbackProc
show_all_lines_cback(Widget w, xgobidata *xg, XtPointer callback_data)
/*
* Show/don't show all the lines. Make sure the duplicate
* toggle in the options menu has the right state.
*/
{
extern Widget display_menu_btn[];
if (xg->connect_the_points || xg->plot_the_arrows)
xg->connect_the_points = xg->plot_the_arrows = False;
else
xg->connect_the_points = True;
/*
* These three functions are in widgets.c, allowing us to
* make sure the menu matches the values of these variables.
*/
set_showlines_option(xg->connect_the_points, xg);
set_showarrows_option(xg->plot_the_arrows, xg);
/*
* Set this to 1 in case there are line colors.
*/
xg->got_new_paint = True;
plot_once(xg);
}
/* ARGSUSED */
XtCallbackProc
remove_all_lines_cback(Widget w, xgobidata *xg, XtPointer callback_data)
/*
* Remove all the lines -- this isn't just not showing them,
* it's removing them altogether.
*/
{
xg->nlines = 0;
le_start = -1;
plot_once(xg);
}
/* ARGSUSED */
static XtCallbackProc
plot_imputed_cback(Widget w, xgobidata *xg, XtPointer callback_data)
{
plot_imputed_values = !plot_imputed_values;
setToggleBitmap(w, plot_imputed_values);
plot_once(xg);
}
/* ------ Initialization section ------ */
void
make_line_editor(xgobidata *xg)
{
/*
* LineEditPanel
*/
line_edit_panel = XtVaCreateManagedWidget("LineEditPanel",
boxWidgetClass, xg->box0,
XtNleft, (XtEdgeType) XtChainLeft,
XtNright, (XtEdgeType) XtChainLeft,
XtNtop, (XtEdgeType) XtChainTop,
XtNbottom, (XtEdgeType) XtChainTop,
XtNmappedWhenManaged, (Boolean) False,
NULL);
if (mono) set_mono(line_edit_panel);
/*
* Add Lines
*/
ADD = CreateToggle(xg, "Add",
True, (Widget) NULL, (Widget) NULL,
(Widget) NULL, False, ONE_OF_MANY,
line_edit_panel, "LE_AddLines");
/*
* Delete Lines
*/
DELETE = CreateToggle(xg, "Delete",
True, (Widget) NULL, (Widget) NULL,
(Widget) ADD, True, ONE_OF_MANY,
line_edit_panel, "LE_RmLines");
/*
* Show lines or don't; duplicate of button on Options panel.
*/
SHOW_LINES = CreateToggle(xg, "Show lines",
True, (Widget) NULL, (Widget) NULL,
(Widget) NULL, True, ANY_OF_MANY,
line_edit_panel, "LE_ShowLines");
/*
* Remove all connecting lines button.
*/
REMOVE_ALL = CreateCommand(xg, "Remove all lines",
True, (Widget) NULL, (Widget) NULL,
line_edit_panel, "LE_RmAllLines");
/*
* Draw lines to missings/imputed values or don't: set the
* button to false, and disable it, if no missing values are
* present.
*/
INCLUDE_IMP = (Widget) CreateToggle(xg, "Include missings",
xg->missing_values_present,
(Widget) NULL, (Widget) NULL, (Widget) NULL,
plot_imputed_values && xg->missing_values_present,
ANY_OF_MANY, line_edit_panel, "CProfPlot");
XtManageChildren(le_cmd, 5);
XtAddCallback(ADD, XtNcallback,
(XtCallbackProc) add_lines_cback, (XtPointer) xg);
XtAddCallback(DELETE, XtNcallback,
(XtCallbackProc) delete_lines_cback, (XtPointer) xg);
XtAddCallback(SHOW_LINES, XtNcallback,
(XtCallbackProc) show_all_lines_cback, (XtPointer) xg);
XtAddCallback(REMOVE_ALL, XtNcallback,
(XtCallbackProc) remove_all_lines_cback, (XtPointer) xg);
XtAddCallback(INCLUDE_IMP, XtNcallback,
(XtCallbackProc) plot_imputed_cback, (XtPointer) xg);
}
/* ------------------ End of initialization section -------------- */
/* ------------------ Routines for the final drawing -------------- */
void
draw_heavy_line(int lineid, Drawable win, xgobidata *xg)
{
int start = xg->connecting_lines[lineid].a-1;
int end = xg->connecting_lines[lineid].b-1;
if (!mono)
XSetForeground(display, copy_GC, xg->line_color_now[lineid]);
XSetLineAttributes(display, copy_GC,
2, LineSolid, CapButt, JoinMiter);
XDrawLine(display, win, copy_GC,
xg->screen[start].x, xg->screen[start].y,
xg->screen[end].x, xg->screen[end].y);
if (!mono)
XSetForeground(display, copy_GC, plotcolors.fg);
XSetLineAttributes(display, copy_GC,
0, LineSolid, CapButt, JoinMiter);
}
static void
find_line_colors_used(xgobidata *xg, int *ncolors_used,
unsigned long *colors_used)
{
Boolean new_color;
int i, k;
/*
* Need this line here to initialize -- especially to cover
* the odd case that you're using xgobi in mono mode on a
* color display.
*/
colors_used[0] = xg->line_color_now[0];
/*
* Loop once through line_color_now[], collecting the colors
* currently in use into the line_colors_used[] vector.
*/
if ( (xg->is_color_painting /*&& xg->is_line_painting*/) ||
xg->got_new_paint)
{
*ncolors_used = 1;
for (i=0; i<xg->nlines; i++)
{
new_color = True;
for (k=0; k<*ncolors_used; k++)
{
if (colors_used[k] == xg->line_color_now[i])
{
new_color = False;
break;
}
}
if (new_color)
{
colors_used[*ncolors_used] = xg->line_color_now[i];
(*ncolors_used)++;
}
}
}
}
void
draw_connecting_lines(xgobidata *xg)
{
int j, k;
int from, to;
int nlines_in_plot;
unsigned long current_color;
static unsigned long line_colors_used[NCOLORS+2];
static int nline_colors_used = 1;
XGCValues *gcv, gcv_inst;
Boolean doit;
XGetGCValues(display, copy_GC, GCCapStyle|GCJoinStyle, &gcv_inst);
gcv = &gcv_inst;
if (!mono) {
find_line_colors_used(xg, &nline_colors_used, line_colors_used);
/*
* Now loop through line_colors_used[], plotting the glyphs of each
* color in a group.
*/
for (k=0; k<nline_colors_used; k++) {
current_color = line_colors_used[k];
nlines_in_plot = 0;
for (j=0; j<xg->nlines; j++) {
from = xg->connecting_lines[j].a - 1;
to = xg->connecting_lines[j].b - 1;
doit = True;
/* If not plotting imputed values, and one is missing, skip it */
if (!plot_imputed_values && plotted_var_missing(from, to, xg))
doit = False;
/* If either from or to is excluded, move on */
else if (xg->ncols == xg->ncols_used) {
if (xg->clusv[(int)GROUPID(from)].excluded)
doit = False;
else if (xg->clusv[(int)GROUPID(to)].excluded)
doit = False;
}
/* If either from or to is erased, move on */
if (doit && (xg->erased[from] || xg->erased[to]))
doit = False;
if (doit) {
if (xg->line_color_now[j] == current_color) {
connecting_segs[nlines_in_plot].x1 = xg->screen[from].x;
connecting_segs[nlines_in_plot].y1 = xg->screen[from].y;
connecting_segs[nlines_in_plot].x2 = xg->screen[to].x;
connecting_segs[nlines_in_plot].y2 = xg->screen[to].y;
if (xg->plot_the_arrows) {
/*
* Add thick piece of the lines to suggest a directional arrow
*/
arrowhead_segs[nlines_in_plot].x1 =
(int) (.2*xg->screen[from].x + .8*xg->screen[to].x);
arrowhead_segs[nlines_in_plot].y1 =
(int) (.2*xg->screen[from].y + .8*xg->screen[to].y);
arrowhead_segs[nlines_in_plot].x2 =
xg->screen[to].x;
arrowhead_segs[nlines_in_plot].y2 =
xg->screen[to].y;
}
nlines_in_plot++;
}
}
}
if (!mono)
XSetForeground(display, copy_GC, current_color);
XDrawSegments(display, xg->pixmap0, copy_GC,
connecting_segs, nlines_in_plot);
if (xg->plot_the_arrows) {
XSetLineAttributes(display, copy_GC, 3, LineSolid,
gcv->cap_style, gcv->join_style);
XDrawSegments(display, xg->pixmap0, copy_GC,
arrowhead_segs, nlines_in_plot);
XSetLineAttributes(display, copy_GC, 0, LineSolid,
gcv->cap_style, gcv->join_style);
}
}
}
else /* if mono */
{
nlines_in_plot = 0;
for (j=0; j<xg->nlines; j++)
{
from = xg->connecting_lines[j].a - 1;
to = xg->connecting_lines[j].b - 1;
/* If not plotting imputed values, and one is missing, skip it */
if (!plot_imputed_values && plotted_var_missing(from, to, xg))
;
else if (!xg->erased[from] && !xg->erased[to]) {
connecting_segs[nlines_in_plot].x1 = xg->screen[from].x;
connecting_segs[nlines_in_plot].y1 = xg->screen[from].y;
connecting_segs[nlines_in_plot].x2 = xg->screen[to].x;
connecting_segs[nlines_in_plot].y2 = xg->screen[to].y;
if (xg->plot_the_arrows) {
/*
* Add thick piece of the lines to suggest a directional arrow
*/
arrowhead_segs[nlines_in_plot].x1 =
(int) (.2*xg->screen[from].x + .8*xg->screen[to].x);
arrowhead_segs[nlines_in_plot].y1 =
(int) (.2*xg->screen[from].y + .8*xg->screen[to].y);
arrowhead_segs[nlines_in_plot].x2 =
xg->screen[to].x;
arrowhead_segs[nlines_in_plot].y2 =
xg->screen[to].y;
}
nlines_in_plot++;
}
}
XDrawSegments(display, xg->pixmap0, copy_GC,
connecting_segs, nlines_in_plot);
if (xg->plot_the_arrows) {
XSetLineAttributes(display, copy_GC, 3, LineSolid,
gcv->cap_style, gcv->join_style);
XDrawSegments(display, xg->pixmap0, copy_GC,
arrowhead_segs, nlines_in_plot);
XSetLineAttributes(display, copy_GC, 0, LineSolid,