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/*
FL_graph.cpp: code for drawing graphs using FLTK library
Copyright (C) 2003 John ffitch
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Choice.H>
#include <FL/Fl_Button.H>
#ifdef _MSC_VER
#include <math.h>
#endif
#include "csdl.h"
#include "cwindow.h"
#include "winFLTK.h"
#include <inttypes.h>
#define NUMOFWINDOWS (30)
#define XINIT 10 /* set default window location */
#define YINIT 50
#define WIDTH 450 /* start off small - user resizes */
#define HEIGHT 150
#define BDR 5
#define BORDERW 10 /* inset from L & R edge */
#define TXHGHT 14 /* baseline offset for text */
#define MAXLSEGS 4096 /* X can only deal with so many linesegs .. */
class graph_box : public Fl_Window {
void draw();
public:
int curr;
int last;
CSOUND *csound;
graph_box(void *cs, int x, int y, int w, int h, const char *l = 0)
: Fl_Window(x, y, w, h, l)
{
curr = last = -1;
csound = (CSOUND*)cs;
}
//void add_graph(WINDAT *wdptr);
};
typedef struct {
Fl_Choice *choice;
Fl_Button *end;
Fl_Menu_Item *menu;
graph_box *graph;
int graph_created;
Fl_Window *form;
} FLGRAPH_GLOBALS;
#define ST(x) ((flgraphGlobals)->x)
/*void printouts(CSOUND *csound){
csound->Message(csound, "menu object: %p\n", ST(menu));
csound->Message(csound, "form object: %p\n", ST(form));
csound->Message(csound, "graph object: %p\n", ST(graph));
csound->Message(csound, "choice object: %p\n", ST(choice));
csound->Message(csound, "globals %p\n", csound->flgraphGlobals);
}*/
void flgraph_init(CSOUND *csound)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
if (flgraphGlobals==NULL) {
csound->CreateGlobalVariable(csound, "FLGRAPH_GLOBALS",
sizeof(FLGRAPH_GLOBALS));
flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
//csound->flgraphGlobals =
//(FLGRAPH_GLOBALS*) csound->Malloc(csound,sizeof(FLGRAPH_GLOBALS));
}
ST(form) = (Fl_Window *) 0;
ST(choice) = (Fl_Choice *) 0;
ST(end) = (Fl_Button *) 0;
ST(graph) = (graph_box *) 0;
ST(menu) = (Fl_Menu_Item *) 0;
ST(graph_created) = 0;
/*ST(menu) = (Fl_Menu_Item*) csound->Calloc(csound,
sizeof(Fl_Menu_Item)*(1+NUMOFWINDOWS));*/
/* VL: moved menu object to be built at each new compilation */
}
/* static graph_box *graph = (graph_box *) 0; */
void graph_box::draw()
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
Fl_Window::draw();
fl_color(0, 0, 0);
fl_line_style(FL_SOLID);
fl_rect(0, 0, w(), h());
if (curr >= 0) {
WINDAT *win = (WINDAT*) ST(menu)[curr].user_data_;
if (!win)
return;
MYFLT *fdata = win->fdata;
int32 npts = win->npts;
char *msg = win->caption;
short win_x, win_y, win_h; /* window rect */
short gra_x, gra_y, gra_w, gra_h; /* graph rect is inset */
short y_axis;
int lsegs, pts_pls;
int pol;
char string[400];
pol = win->polarity;
win_x = 0; win_y = 0; /* window pixels addressed relative */
win_h = h();
/* set new width and height so we leave a 20% border around the plot */
gra_w = w() - 2*BORDERW;
gra_h = h();
gra_x = win_x + BORDERW;
gra_y = win_y;
/* figure height of Y axis - top, middle or bottom */
if (pol == (short)BIPOL)
y_axis = gra_y + (gra_h/2);
else if (pol == (short)NEGPOL)
y_axis = gra_y;
else /* POSPOL */
y_axis = gra_y + gra_h;
if (npts < MAXLSEGS) {
lsegs = npts; /* one lineseg per datum */
pts_pls = 1;
}
else {
pts_pls = npts/MAXLSEGS;
if (npts%MAXLSEGS) pts_pls++;
lsegs = npts/pts_pls;
}
fl_begin_line();
{ /* take scale factors out of for-loop for faster run-time */
MYFLT x_scale = gra_w / (MYFLT) (lsegs - 1);
MYFLT y_scale = gra_h / win->oabsmax; /* unipolar default */
MYFLT f, ma, mi, *fdptr = fdata;
int c, i = 0, j = lsegs;
if (pol == (short) BIPOL)
y_scale /= 2.0; /* max data scales to h/2 */
/* put x-y pairs into a point list for XDraw */
while (j--) {
int x = gra_x + (short) ((MYFLT) i++ * x_scale);
int y;
if (pts_pls == 1)
f = *fdptr++;
else {
ma = mi = *fdptr++;
for (c = 1; c < pts_pls; ++c)
if ((f = *fdptr++) > ma) ma = f;
else if ( f<mi ) mi = f;
if (ma < 0) f = mi;
else if (mi > 0) f = ma;
else if (ma > -mi) f = ma;
else f = mi;
}
y = y_axis - (short) (f * y_scale);
fl_vertex(x, y);
}
}
fl_end_line();
/* now draw axes: y-axis is always on the left edge,
x-axis height is determined by the case we're in */
fl_line(gra_x, y_axis, (gra_x + gra_w), y_axis);
fl_line(gra_x, y_axis, (gra_x + gra_w), y_axis);
fl_line(gra_x, gra_y, gra_x, (gra_y + gra_h));
if (win->danflag) { /* flag to add dotted divider */
fl_line_style(FL_DOT);
fl_line(win_x+w()/2, win_y, win_x+w()/2, win_y+win_h);
}
if (pol != NEGPOL)
sprintf(string, "%s %" PRIi32 " points, max %5.3f", msg, npts, win->oabsmax);
else
sprintf(string, "%s %" PRIi32 " points, max %5.3f", msg, npts, win->max);
ST(form)->label(string);
}
fl_line_style(FL_SOLID);
}
void add_graph(CSOUND *csound, WINDAT *wdptr)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
WINDAT *n = (WINDAT*) malloc(sizeof(WINDAT));
int m;
WINDAT *old;
int replacing = 0;
memcpy(n, wdptr, sizeof(WINDAT));
n->fdata = (MYFLT*) malloc(n->npts * sizeof(MYFLT));
memcpy(n->fdata, wdptr->fdata, n->npts * sizeof(MYFLT));
for (m = 0; m < NUMOFWINDOWS; m++) { // If text the same use slot
if (ST(menu) != NULL) {
if (ST(menu)[m].text != NULL && strlen(wdptr->caption) == 0){
if(strcmp(wdptr->caption, ST(menu)[m].text) == 0) {
replacing = 1;
goto replace;
}
}
}
}
// Use a new slot, cycling round
ST(graph)->last++;
m = ST(graph)->last;
if (m >= NUMOFWINDOWS)
m = ST(graph)->last = 0;
replace:
old = (WINDAT*)ST(menu)[m].user_data_;
if (old) {
free((void*) old->fdata);
free((void*) old);
}
ST(menu)[m].user_data_ = n;
if (replacing == 0) {
if (ST(menu)[m].text != NULL)
free((void*) ST(menu)[m].text);
ST(menu)[m].text = (const char*) malloc(strlen(n->caption) + 1);
strcpy((char*) ST(menu)[m].text, n->caption);
}
// ST(graph)->curr = m;
// ST(choice)->value(m);
ST(graph)->curr = ST(choice)->value(); /* VL: 29.04.09 fix */
ST(graph)->redraw();
}
void do_redraw(Fl_Widget *, void *cs)
{
CSOUND *csound = (CSOUND*)cs;
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
ST(graph)->curr = ST(choice)->value();
ST(graph)->redraw();
}
void makeWindow(CSOUND *csound, char *name)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
if (ST(form))
return;
ST(form) = new Fl_Window(WIDTH, HEIGHT, name);
ST(menu) = new Fl_Menu_Item[1+NUMOFWINDOWS];
memset(ST(menu), 0, sizeof(Fl_Menu_Item)*(1+NUMOFWINDOWS));
ST(choice) = new Fl_Choice(140, 0, 140, 20, "Choose Graph");
ST(choice)->menu(ST(menu));
ST(choice)->value(0);
ST(choice)->callback((Fl_Callback*) do_redraw, (void*)csound);
ST(graph) = new graph_box(csound,
BDR, 30 + BDR, WIDTH - 2 * BDR, HEIGHT - 30 - 2 * BDR);
ST(graph)->end();
ST(end) = new Fl_Button(WIDTH - 40, 0, 35, 20, "Quit");
ST(end)->hide();
ST(form)->resizable(ST(graph));
ST(form)->end();
ST(graph_created) = 1;
}
void graphs_reset(CSOUND * csound){
IGN(csound);
//if (csound->flgraphGlobals != NULL)
// csound->Free(csound, csound->flgraphGlobals);
}
extern "C" {
void DrawGraph_FLTK(CSOUND *csound, WINDAT *wdptr)
{
add_graph(csound, wdptr);
csound->CheckEvents(csound);
}
uintptr_t MakeWindow_FLTK(CSOUND *csound, char *name)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
if (ST(form) == NULL) {
makeWindow(csound, name);
ST(form)->show();
}
return (uintptr_t) ST(form);
}
int CsoundYield_FLTK(CSOUND *csound){
#ifndef NO_FLTK_THREADS
/* nothing to do, unless no widget thread is running */
if (csound->QueryGlobalVariable(csound, "_widgets_globals") != NULL)
return 1;
#endif
Fl_wait_locked(csound, 0.0);
return 1;
}
void kill_graph(CSOUND *csound, uintptr_t m)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
for (int i = 0; i < NUMOFWINDOWS; i++) {
WINDAT *n = (WINDAT*) ST(menu)[i].user_data_;
if (n != NULL && ((uintptr_t) n == m ||n->windid == m)) {
free(n->fdata);
free(n);
free((void*) ST(menu)[i].text);
ST(menu)[i].user_data_ = (void*) 0;
ST(menu)[i].text = (char*) 0;
return;
}
}
}
int ExitGraph_FLTK(CSOUND *csound)
{
FLGRAPH_GLOBALS *flgraphGlobals =
(FLGRAPH_GLOBALS *) csound->QueryGlobalVariable(csound,
"FLGRAPH_GLOBALS");
if (flgraphGlobals == 0) {
return OK;
}
if (ST(form) && ST(graph_created) == 1) {
if (ST(form)->shown() && !(getFLTKFlags(csound) & 256)) {
const char *env = csound->GetEnv(csound, "CSNOSTOP");
if (env == NULL || strcmp(env, "yes") != 0) {
ST(end)->show();
// print click-Exit message in most recently active window
while (ST(end)->value() == 0 && ST(form)->shown()) {
Fl_wait_locked(csound, 0.03);
}
}
}
delete ST(form);
ST(form) = (Fl_Window *) 0;
Fl_wait_locked(csound, 0.0);
ST(choice) = (Fl_Choice *) 0;
ST(graph) = (graph_box *) 0;
ST(end) = (Fl_Button *) 0;
ST(graph_created) = 0;
for (int i = 0; i < NUMOFWINDOWS; i++) {
WINDAT *n = (WINDAT*) ST(menu)[i].user_data_;
if (n)
kill_graph(csound, (uintptr_t) ((void*) n));
}
if (ST(menu)){
delete[] ST(menu);
ST(menu) = (Fl_Menu_Item *) 0;
}
}
return 0;
}
#define GUTTERH 20 /* space for text at top & bottom */
#define BORDERW 10 /* inset from L & R edge */
void MakeXYin_FLTK(CSOUND *csound, XYINDAT *w, MYFLT x, MYFLT y)
{
if (w->windid == (uintptr_t) 0) {
Fl_Window *xyin = new Fl_Window(WIDTH, WIDTH, "XY input");
short win_x, win_y;
short gra_x, gra_y, gra_w, gra_h;
win_x = 0; win_y = 0; /* window pixels addressed relative */
Fl_lock(csound);
xyin->show();
Fl_wait(csound, 0.0);
Fl_unlock(csound);
/* set new width and height so we leave a 20% border around the plot */
gra_w = xyin->w() - 2*BORDERW; gra_h = xyin->h() - 2*GUTTERH;
gra_x = win_x + BORDERW; gra_y = win_y + GUTTERH;
w->m_x = gra_x + (int) (x * (MYFLT) gra_w);
w->m_y = gra_y + (int) (y * (MYFLT) gra_h);
w->down = 0;
Fl_lock(csound);
Fl_wait(csound, 0.0);
xyin->make_current();
fl_color(0, 0, 0);
fl_line_style(FL_DOT);
fl_line(gra_x, w->m_y, (gra_x + gra_w), w->m_y);
fl_line(w->m_x, gra_y, w->m_x, (gra_y + gra_h));
Fl_unlock(csound);
w->windid = (uintptr_t) xyin;
}
}
void ReadXYin_FLTK(CSOUND *csound, XYINDAT *wdptr)
{
short win_x, win_y;
short gra_x, gra_y, gra_w, gra_h;
short m_x, m_y;
Fl_Window *xwin = (Fl_Window*) wdptr->windid;
Fl_lock(csound);
Fl_wait(csound, 0.0);
m_x = Fl::event_x();
m_y = Fl::event_y();
wdptr->down = (short) (Fl::event_button1() ? 1 : 0);
Fl_unlock(csound);
if (!wdptr->down)
return;
win_x = 0; win_y = 0; /* window pixels addressed relative */
/* set new width and height so we leave a 20% border around the plot */
gra_w = xwin->w() - 2*BORDERW; gra_h = xwin->h() - 2*GUTTERH;
gra_x = win_x + BORDERW; gra_y = win_y + GUTTERH;
/* clip mouse position */
if (m_x < gra_x) m_x = gra_x;
else if (m_x > gra_x+gra_w) m_x = gra_x+gra_w;
if (m_y < gra_y) m_y = gra_y;
else if (m_y > gra_y+gra_h) m_y = gra_y+gra_h;
if (m_x != wdptr->m_x || m_y != wdptr->m_y) { /* only redo if changed */
Fl_lock(csound);
xwin->make_current();
/* undraw old crosshairs */
fl_color(FL_BACKGROUND_COLOR);
fl_line_style(FL_SOLID);
fl_line(gra_x, wdptr->m_y, (gra_x + gra_w), wdptr->m_y);
fl_line(wdptr->m_x, gra_y, wdptr->m_x, (gra_y + gra_h));
// Draw new
fl_color(0, 0, 0);
fl_line_style(FL_SOLID);
fl_line(gra_x, m_y, (gra_x + gra_w), m_y);
fl_line(m_x, gra_y, m_x, (gra_y + gra_h));
Fl_unlock(csound);
wdptr->m_x = m_x; wdptr->m_y = m_y;
wdptr->x = ((MYFLT) m_x - gra_x) / (MYFLT) gra_w;
wdptr->y = ((MYFLT) m_y - gra_y) / (MYFLT) gra_h;
}
}
void KillXYin_FLTK(CSOUND *csound, XYINDAT *wdptr)
{
IGN(csound);
delete ((Fl_Window*) wdptr->windid);
wdptr->windid = (uintptr_t) 0;
}
}
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