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pattern.c
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pattern.c
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/*
* Komposter
*
* Copyright (c) 2010 Noora Halme et al. (see AUTHORS)
*
* This code is licensed under the GNU General Public
* License version 2. See LICENSE for full text.
*
* Pattern editor page
*
*/
#include "pattern.h"
// button indexes
#define B_PREV 0
#define B_NEXT 1
#define B_SHORTER 2
#define B_LONGER 3
#define B_OCTUP 4
#define B_OCTDN 5
#define B_PREVSYN 6
#define B_SYNNAME 7
#define B_NEXTSYN 8
#define B_PATTPLAY 9
#define B_PATTLOAD 10
#define B_PATTSAVE 11
#define B_PATTCLEAR 12
#define B_COPY 13
#define B_PASTE 14
#define KB_WIDTH 40
#define PIANOROLL_Y 528.5
#define PIANOROLL_X KB_WIDTH+5.5
#define PIANOROLL_HEIGHT 336
#define PIANOROLL_CELLWIDTH 11
#define PIANOROLL_CELLHEIGHT 7
#define PIANOROLL_BEAT (PIANOROLL_CELL*4)
#define PIANOROLL_OCTAVES 6
// from modules.c
extern float pitch[MAX_SYNTH];
extern int accent[MAX_SYNTH];
extern int gate[MAX_SYNTH];
extern int audiomode; // from audio.c
extern unsigned long playpos;
extern unsigned int audiomode_flags;
// from sequencer.c
extern int bpm;
extern int beats_per_measure;
extern int beatdiv;
extern int csynth; // from synthesizer.c
extern char synthname[MAX_SYNTH][128]; // from synthesizer.c
extern char patchname[MAX_SYNTH][MAX_PATCHES][128]; // from patch.c
extern synthmodule mod[MAX_SYNTH][MAX_MODULES]; // ditto
extern int signalfifo[MAX_SYNTH][MAX_MODULES]; // module execution stack
extern int cpatch[MAX_SYNTH]; // selected patch for each synth
// from patch.c
extern char pianokeys[29];
extern int kpkeydown;
// black or white key
const unsigned char keycolor[12]={1,0,1,0,1,1,0,1,0,1,0,1};
u32 pattdata[MAX_PATTERN][MAX_PATTLENGTH];
u32 pattlen[MAX_PATTERN];
u32 patt_clipboard[MAX_PATTLENGTH];
u32 patt_clipboard_len;
int cpatt, coct;
int patt_ui[15];
int piano_hover, piano_note, piano_drag, piano_dragto;
int piano_start;
int slide_hover;
float slide_drag_xofs;
int slide_drag, slide_drag_start;
int patt_cpatch;
int piano_porta_drag, piano_porta_drag_len, piano_porta_drag_from;
// initialize pattern data to defaults
void pattern_init()
{
int i,j;
cpatt=0;
coct=3;
for(i=0;i<MAX_PATTERN;i++) {
pattlen[i]=4;
for(j=0;j<MAX_PATTLENGTH;j++) pattdata[i][j]=0;
}
piano_note=-1; piano_hover=-1; piano_drag=-1; piano_dragto=-1;
piano_start=0; slide_hover=0;
patt_cpatch=0;
piano_porta_drag=-1; piano_porta_drag_len=0;
for(i=0;i<13;i++) patt_ui[i]=0;
patt_clipboard_len=0;
}
void pattern_toggleplayback()
{
int patt_playing;
patt_playing=((audiomode==AUDIOMODE_PATTERNPLAY)&1)^1;
patt_ui[B_PATTPLAY]&=1;
patt_ui[B_PATTPLAY]|=(patt_playing<<1);
playpos=0;
gate[0]=0;
if (patt_playing) {
audiomode=AUDIOMODE_PATTERNPLAY; audiomode_flags|=1;
} else {
audiomode=AUDIOMODE_COMPOSING;
}
}
// returns pattern offset the cursor is on top of or -1 if the cursor is currently
// off the piano roll. when a position is returned, the int pointed by note is set to
// the midi note number under the cursor.
int pattern_cursorpos(int x, int y, int *note)
{
int cx,cy;
float lineheight;
if (((coct+PIANOROLL_OCTAVES)*12)<MAX_NOTE) {
lineheight=PIANOROLL_OCTAVES*12;
} else {
lineheight=PIANOROLL_OCTAVES*12 - (((coct+PIANOROLL_OCTAVES)*12)-MAX_NOTE);
}
if (
x > PIANOROLL_X &&
x < (PIANOROLL_X + (pattlen[cpatt]*(beats_per_measure*beatdiv))*PIANOROLL_CELLWIDTH + 1) &&
y < PIANOROLL_Y + 3 &&
y > (PIANOROLL_Y + 1 - lineheight*PIANOROLL_CELLHEIGHT)
)
{
cx=(int)((x-PIANOROLL_X)/PIANOROLL_CELLWIDTH)-1;
cy=abs((int)((y-PIANOROLL_Y-2)/PIANOROLL_CELLHEIGHT));
if (note) *note=coct*12+cy;
return cx;
}
return -1;
}
void pattern_mouse_hover(int x, int y)
{
// test buttons
patt_ui[B_PREV]=hovertest_box(x, y, 14, DS_HEIGHT-14, 16, 16);
patt_ui[B_NEXT]=hovertest_box(x, y, 64, DS_HEIGHT-14, 16, 16);
patt_ui[B_SHORTER]=hovertest_box(x, y, 98, DS_HEIGHT-14, 16, 16);
patt_ui[B_LONGER]=hovertest_box(x, y, 180, DS_HEIGHT-14, 16, 16);
patt_ui[B_OCTDN]=hovertest_box(x, y, 12, PIANOROLL_Y+16, 16, 16);
patt_ui[B_OCTUP]=hovertest_box(x, y, 32, PIANOROLL_Y+16, 16, 16);
patt_ui[B_PREVSYN]=hovertest_box(x, y, 214, DS_HEIGHT-14, 16, 16);
patt_ui[B_NEXTSYN]=hovertest_box(x, y, 430, DS_HEIGHT-14, 16, 16);
patt_ui[B_PATTCLEAR]=hovertest_box(x, y, 555, DS_HEIGHT-14, 16, 16) | (patt_ui[B_PATTCLEAR]&8);
patt_ui[B_COPY]=hovertest_box(x,y,622, DS_HEIGHT-14, 16, 16);
patt_ui[B_PASTE]=hovertest_box(x,y,644, DS_HEIGHT-14, 16, 16);
if (patt_clipboard_len==0) patt_ui[B_PASTE]=0;
patt_ui[B_PATTPLAY]=hovertest_box(x, y, 482, DS_HEIGHT-14, 16, 42);
if (audiomode==AUDIOMODE_PATTERNPLAY) patt_ui[B_PATTPLAY]|=2;
// hovering above piano roll?
piano_note=-1;
piano_hover=pattern_cursorpos(x,y,&piano_note);
// hovering above slider?
slide_hover=hovertest_hslider(x,y,PIANOROLL_X, PIANOROLL_Y+12, (DS_WIDTH-(PIANOROLL_X+6)), 12,
piano_start, (DS_WIDTH-(PIANOROLL_X+4))/PIANOROLL_CELLWIDTH, pattlen[cpatt]*(beats_per_measure*beatdiv));
// any ui-elements active?
//for(m=0;m<7;m++) if (patt_ui[m]&1) return;
}
void pattern_mouse_drag(int x, int y)
{
int m,n,note,i;
float f, cos, cip, sbw, slw;
// dragging a new note, paint all cells from drag point to current cell
if (piano_drag >= 0) {
m=pattern_cursorpos(x, y, ¬e); // disregard note
if (m>=piano_drag) piano_dragto=m;
return;
}
// dragging the piano roll scrollbar
if (slide_drag>0) {
sbw=DS_WIDTH-(PIANOROLL_X+6); // scrollbar width
cos=(DS_WIDTH-(PIANOROLL_X))/PIANOROLL_CELLWIDTH; // cells on screen
cip=pattlen[cpatt]*(beats_per_measure*beatdiv); // cells in pattern
slw=sbw*(cos/cip);
f=((x-slide_drag_xofs)/(sbw-slw))*(cip-cos);
piano_start=slide_drag_start+f;
if (piano_start>(1+cip-cos)) piano_start=(1+cip-cos);
if (piano_start<0) piano_start=0;
return;
}
if (piano_porta_drag >= 0) {
n=pattdata[cpatt][piano_start+piano_porta_drag]; // current note being dragged
m=pattern_cursorpos(x, y, ¬e);
if (note != n) {
// replace the note on the pattern data
for(i=0;i<piano_porta_drag_len;i++) {
pattdata[cpatt][piano_start+piano_porta_drag+i]&=0xff80;
pattdata[cpatt][piano_start+piano_porta_drag+i]|=note&0xff;
}
piano_note=note&0xff;
//audio_trignote(0, piano_note); // audio feedback
}
}
}
void pattern_mouse_click(int button, int state, int x, int y)
{
int i,m,j,l;
char tmps[256];
if (button==GLUT_LEFT_BUTTON) {
if (state==GLUT_DOWN) {
// test first if piano roll is clicked with modifiers
m=glutGetModifiers();
if (m==GLUT_ACTIVE_SHIFT) {
if (piano_hover>=0 && piano_note==(pattdata[cpatt][piano_start+piano_hover]&0xff)) {
// wipe the note from begin to end
i=piano_start+piano_hover;
while(pattdata[cpatt][i]&NOTE_LEGATO) i--;
do { pattdata[cpatt][i++]=0;
} while(pattdata[cpatt][i]&NOTE_LEGATO);
return;
}
}
// clear the pattern
if (patt_ui[B_PATTCLEAR]&1) {
if (patt_ui[B_PATTCLEAR]&8) {
for(i=0;i<MAX_PATTLENGTH;i++) pattdata[cpatt][i]=0;
sprintf(tmps, "Pattern %02d cleared", cpatt);
console_post(tmps);
patt_ui[B_PATTCLEAR]&=0xff-8;
} else {
console_post("Click again to clear pattern");
patt_ui[B_PATTCLEAR]|=8;
}
return;
} else {
patt_ui[B_PATTCLEAR]&=0xff-8;
}
// click on the ui buttons
if (patt_ui[B_PREV]) { if (cpatt>0) cpatt--; return; }
if (patt_ui[B_NEXT]) { if (cpatt<MAX_PATTERN) cpatt++; return; }
if (patt_ui[B_SHORTER]) {
if (pattlen[cpatt]>1) {
// clear the pattern data no longer visible if shift down
m=glutGetModifiers();
if (m==GLUT_ACTIVE_SHIFT) {
for(i=((pattlen[cpatt]*(beats_per_measure*beatdiv))/2); i<(pattlen[cpatt]*(beats_per_measure*beatdiv)); i++) pattdata[cpatt][i]=0;
}
pattlen[cpatt]/=2;
while (piano_start >
( 1+pattlen[cpatt]*(beats_per_measure*beatdiv) - ( (DS_WIDTH-(PIANOROLL_X))/PIANOROLL_CELLWIDTH ) ) ) piano_start--;
if (piano_start<0) piano_start=0;
}
return;
}
if (patt_ui[B_LONGER]) {
if (pattlen[cpatt]<16) {
pattlen[cpatt]*=2;
// duplicate first half of pattern to second half if shift pressed
m=glutGetModifiers();
if (m==GLUT_ACTIVE_SHIFT) {
for(i=0; i<((pattlen[cpatt]*(beats_per_measure*beatdiv))/2); i++) pattdata[cpatt][i+((pattlen[cpatt]*(beats_per_measure*beatdiv))/2)]=pattdata[cpatt][i];
}
}
return;
}
if (patt_ui[B_OCTDN]) { if (coct>0) coct--; return; }
if (patt_ui[B_OCTUP]) { if (coct<MAX_OCTAVE) coct++; return; }
if (patt_ui[B_PREVSYN]) { if (csynth[cpatch]>0) csynth[cpatch]--;
audio_loadpatch(0, csynth, cpatch[csynth]);
return; }
if (patt_ui[B_NEXTSYN]) { if (csynth[cpatch]<(MAX_PATCHES-1)) csynth[cpatch]++;
audio_loadpatch(0, csynth, cpatch[csynth]);
return; }
if (patt_ui[B_PATTPLAY]&1) pattern_toggleplayback();
if (patt_ui[B_COPY]) {
// copy pattern data to clipboard
for(i=0; i<pattlen[cpatt]*(beats_per_measure*beatdiv); i++) patt_clipboard[i]=pattdata[cpatt][i];
patt_clipboard_len=pattlen[cpatt]*(beats_per_measure*beatdiv);
console_post("Current pattern copied to clipboard");
}
if (patt_ui[B_PASTE] && patt_clipboard_len>0) {
for(i=0; i<patt_clipboard_len; i++) pattdata[cpatt][i]=patt_clipboard[i];
}
// click on the piano roll?
if (piano_hover>=0) {
if (piano_note==(pattdata[cpatt][piano_start+piano_hover]&0xff)) {
// clicked on an existing note, start drag up/down
j=piano_hover;
if (pattdata[cpatt][piano_start+j]&NOTE_LEGATO) {
while (pattdata[cpatt][piano_start+j]&NOTE_LEGATO) j--;
}
for(l=1; pattdata[cpatt][piano_start+j+l]&NOTE_LEGATO; l++);
piano_porta_drag=j;
piano_porta_drag_len=l;
piano_porta_drag_from=pattdata[cpatt][piano_start+j]&0xff;
} else {
// create a new note - set the 1/16th note on the pattern
pattdata[cpatt][piano_start+piano_hover]=piano_note;
piano_drag=piano_hover; //drag note stating from this cell
piano_dragto=piano_hover;
// trig the note to get an audible feedback
audio_trignote(0, piano_note);
}
}
// click on the slider?
if (slide_hover) {
slide_drag=1;
slide_drag_xofs=x;
slide_drag_start=piano_start;
}
}
if (state==GLUT_UP) {
if (slide_drag) { slide_drag=0; return; }
if (piano_drag>=0) {
// released the drag, draw the notes with legato and reset drag
for(m=piano_drag;m<=piano_dragto;m++) pattdata[cpatt][piano_start+m]=pattdata[cpatt][piano_start+piano_drag]|NOTE_LEGATO;
pattdata[cpatt][piano_start+piano_drag]&=0xff; // legato off from the first note
pattdata[cpatt][piano_start+piano_dragto+1]&=0xff; // legato off from the note which follows
piano_drag=-1;
piano_dragto=-1;
gate[0]=0; // note off
}
if (piano_porta_drag>=0) {
piano_porta_drag=-1;
piano_porta_drag_len=0;
gate[0]=0; // note off
}
}
}
if (button==GLUT_RIGHT_BUTTON) {
if (state==GLUT_DOWN) {
if (piano_hover>=0) {
// right click to set accent
if (pattdata[cpatt][piano_start+piano_hover]) { // got a note here
if (pattdata[cpatt][piano_start+piano_hover]&NOTE_LEGATO) {
//printf("legato here\n"); // do nothing
} else {
// first note, so mark it with an accent
pattdata[cpatt][piano_start+piano_hover]^=NOTE_ACCENT;
}
}
}
}
}
}
// keyboard callback
void pattern_keyboard(unsigned char key, int x, int y)
{
int i,pkey;
switch (key) {
case ' ': pattern_toggleplayback(); return; break;
case '-':
if (pattlen[cpatt]>1) pattlen[cpatt]/=2;
while (piano_start >
( 1+pattlen[cpatt]*(beats_per_measure*beatdiv) - ( (DS_WIDTH-(PIANOROLL_X))/PIANOROLL_CELLWIDTH ) ) ) piano_start--;
if (piano_start<0) piano_start=0;
return;
break;
case '+':
if (pattlen[cpatt]<16) pattlen[cpatt]*=2;
return;
break;
case ',':
if (csynth[cpatch]>0) csynth[cpatch]--;
audio_loadpatch(0, csynth, cpatch[csynth]);
return;
break;
case '.':
if (csynth[cpatch]<(MAX_PATCHES-1)) csynth[cpatch]++;
audio_loadpatch(0, csynth, cpatch[csynth]);
return;
break;
}
// keyjazzing! w00t!
for (i=0;i<29;i++) {
if (pianokeys[i]==key) {
// trig note. use same base octave as pattern editor
pkey=coct*12 + i;
kpkeydown=pkey;
audio_trignote(0, pkey);
}
}
}
void pattern_specialkey(unsigned char key, int x, int y)
{
switch(key)
{
case GLUT_KEY_LEFT:
if (cpatt>0) cpatt--;
break;
case GLUT_KEY_RIGHT:
if (cpatt<MAX_PATTERN) cpatt++;
break;
case GLUT_KEY_DOWN:
if (coct>0) coct--;
break;
case GLUT_KEY_UP:
if (coct<(9-PIANOROLL_OCTAVES)) coct++;
break;
case GLUT_KEY_PAGE_DOWN:
break;
case GLUT_KEY_PAGE_UP:
break;
}
}
void pattern_keyboardup(unsigned char key, int x, int y)
{
int i;
for (i=0;i<29;i++) {
if (pianokeys[i]==key) {
// if this key is still down, drop gate and trig
if (kpkeydown==(i+coct*12)) {
gate[0]=0;
kpkeydown=-1;
}
}
}
}
void pattern_draw(void)
{
int i,j,n,l;
char tmps[256];
long ticks;
int rkdown;
float lineheight;
// draw keyboard, highlight a note if cursor is on piano roll
rkdown=-1;
if (piano_drag>=0) rkdown=piano_drag;
if (kpkeydown>=0) rkdown=kpkeydown;
for(i=0;i<PIANOROLL_OCTAVES;i++)
if ((coct+i)<10)draw_kboct(round(PIANOROLL_Y-(12*PIANOROLL_CELLHEIGHT*i)), 40, 12, coct+i, piano_note, rkdown);
// backgrounds and divider lines for note grid
for(j=0;j<(PIANOROLL_OCTAVES*12+1);j++) {
if (coct*12+j > MAX_NOTE) continue;
if (keycolor[j%12]) {
glColor4ub(0x20, 0x20, 0x20, 0xff);
} else {
glColor4ub(0x00, 0x00, 0x00, 0xff);
}
glBegin(GL_QUADS);
glVertex2f(PIANOROLL_X, PIANOROLL_Y-(j*PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X+(pattlen[cpatt]*(beats_per_measure*beatdiv)-piano_start)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(j*PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X+(pattlen[cpatt]*(beats_per_measure*beatdiv)-piano_start)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-((j+1)*PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X, PIANOROLL_Y-((j+1)*PIANOROLL_CELLHEIGHT));
glEnd();
glColor4f(0.3, 0.3, 0.3, 0.8);
if ((j%12)==0) glColor4f(0.5, 0.5, 0.5, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xaaaa);
glBegin(GL_LINES);
glVertex2f(PIANOROLL_X, PIANOROLL_Y-(j*PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X+(pattlen[cpatt]*(beats_per_measure*beatdiv)-piano_start)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(j*PIANOROLL_CELLHEIGHT));
glEnd();
glDisable(GL_LINE_STIPPLE);
}
// draw markers for beats and measures
if (((coct+PIANOROLL_OCTAVES)*12)<MAX_NOTE) {
lineheight=PIANOROLL_OCTAVES*12;
} else {
lineheight=PIANOROLL_OCTAVES*12 - (((coct+PIANOROLL_OCTAVES)*12)-MAX_NOTE);
}
lineheight*=PIANOROLL_CELLHEIGHT;
for(i=0,j=piano_start;j<(pattlen[cpatt]*(beats_per_measure*beatdiv)+1);i++,j++) {
glColor4f(0.2, 0.2, 0.2, 0.8);
if ((j%beatdiv)==0) {
// beat
glColor4f(0.5, 0.5, 0.5, 0.8);
}
int b=beats_per_measure*beatdiv;
if ((j%b)==0 && j<(pattlen[cpatt]*b)) {
// measure
sprintf(tmps, "%1d", (j/(beats_per_measure*beatdiv)));
render_text(tmps, 2.5+PIANOROLL_X+(i*PIANOROLL_CELLWIDTH), round(PIANOROLL_Y+PIANOROLL_CELLHEIGHT), 2, 0xffa0a0a0, 0);
glColor4f(0.7, 0.7, 0.7, 0.8);
}
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0xaaaa);
glBegin(GL_LINES);
glVertex2f(PIANOROLL_X+i*PIANOROLL_CELLWIDTH, round(PIANOROLL_Y+PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X+i*PIANOROLL_CELLWIDTH, round(PIANOROLL_Y-lineheight)); //(PIANOROLL_OCTAVES*12)*PIANOROLL_CELLHEIGHT)));
glEnd();
glDisable(GL_LINE_STIPPLE);
}
// draw the playing position if pattern is playing
if (audiomode==AUDIOMODE_PATTERNPLAY) {
ticks=playpos / (OUTPUTFREQ/(bpm*256/60)); // calc tick from sample index
if ( (ticks>>6)>=piano_start && (ticks>>6)<(pattlen[cpatt]*(beats_per_measure*beatdiv)) ) // TODO: test if pos > pianostart+rollwidth
{
// within bounds
i=(ticks>>6)-piano_start;
glColor4f(1.0, 1.0, 1.0, 1.0);
glBegin(GL_LINES);
glVertex2f(PIANOROLL_X+i*PIANOROLL_CELLWIDTH, round(PIANOROLL_Y+PIANOROLL_CELLHEIGHT));
glVertex2f(PIANOROLL_X+i*PIANOROLL_CELLWIDTH, round(PIANOROLL_Y-((PIANOROLL_OCTAVES*12)*PIANOROLL_CELLHEIGHT)));
glEnd();
}
}
// draw the notes to the piano roll
for(i=0,j=piano_start;j<(pattlen[cpatt]*(beats_per_measure*beatdiv));i++,j++) {
n=pattdata[cpatt][j] & 0xff; // take only the low byte
l=(pattdata[cpatt][j]&NOTE_LEGATO) ? 0 : 1; // if legato, extend note for a pixel left
if (n>0) { // todo: fill with -1 instead as 0 is a valid midi note
if ( n>=(coct*12) && n<((coct+PIANOROLL_OCTAVES)*12)) {
// on the visible three octaves - plot it
glColor4ub(0xb0, 0x55, 0x00, 0xff);
glBegin(GL_QUADS);
glVertex2f(l+PIANOROLL_X+i*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(i+1)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(i+1)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(l+PIANOROLL_X+i*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
if (pattdata[cpatt][j]&NOTE_ACCENT) {
// draw the accent mark
render_text(">",
l+PIANOROLL_X+i*PIANOROLL_CELLWIDTH+1,
PIANOROLL_Y-2-(n-coct*12+1)*PIANOROLL_CELLHEIGHT,
2, 0x000000ff, 0);
render_text(">",
l+PIANOROLL_X+i*PIANOROLL_CELLWIDTH,
PIANOROLL_Y-2-(n-coct*12+1)*PIANOROLL_CELLHEIGHT,
2, 0xffffffff, 0);
}
}
}
}
// draw the note highlighted by cursor
if (piano_hover >= 0) {
n=pattdata[cpatt][piano_start+piano_hover]&0xff;
if (n>0 && piano_note==n) {
j=piano_hover;
if (pattdata[cpatt][piano_start+j]&NOTE_LEGATO) {
// search backwards to find start of note
while (pattdata[cpatt][piano_start+j]&NOTE_LEGATO) j--;
}
for(l=1; pattdata[cpatt][piano_start+j+l]&NOTE_LEGATO; l++);
glColor4f(0.8, 0.8, 0.8, 0.8);
glEnable(GL_LINE_STIPPLE);
glLineStipple(1, 0x3333);
glBegin(GL_LINE_LOOP);
glVertex2f(1+PIANOROLL_X+j*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(j+l)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(j+l)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(1+PIANOROLL_X+j*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
glDisable(GL_LINE_STIPPLE);
}
}
// drag an existing note up or down
if (piano_porta_drag >= 0) {
n=pattdata[cpatt][piano_start+piano_porta_drag];
glColor4ub(0xc0, 0xc0, 0xc0, 0x6f);
glBegin(GL_QUADS);
glVertex2f(1+PIANOROLL_X+piano_porta_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_porta_drag+piano_porta_drag_len)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_porta_drag+piano_porta_drag_len)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(1+PIANOROLL_X+piano_porta_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
if (piano_porta_drag_from != pattdata[cpatt][piano_start+piano_porta_drag]) {
n=piano_porta_drag_from;
glColor4ub(0x90, 0x90, 0x90, 0x6f);
glBegin(GL_QUADS);
glVertex2f(1+PIANOROLL_X+piano_porta_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_porta_drag+piano_porta_drag_len)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_porta_drag+piano_porta_drag_len)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(1+PIANOROLL_X+piano_porta_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
}
}
// draw the new note being dragged onto piano roll
if (piano_drag >= 0) {
n=pattdata[cpatt][piano_start+piano_drag];
glColor4ub(0xc0, 0xc0, 0xc0, 0x6f);
glBegin(GL_QUADS);
glVertex2f(1+PIANOROLL_X+piano_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_dragto+1)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-1-(n-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(piano_dragto+1)*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(1+PIANOROLL_X+piano_drag*PIANOROLL_CELLWIDTH, PIANOROLL_Y-(n-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
}
// highlight the note row if a key is currently down
if (kpkeydown >=0 && kpkeydown>=(coct*12) && kpkeydown<((coct+PIANOROLL_OCTAVES)*12)) {
glColor4ub(0xc0, 0xc0, 0xc0, 0x3f);
glBegin(GL_QUADS);
glVertex2f(PIANOROLL_X,
PIANOROLL_Y-1-(kpkeydown-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(pattlen[cpatt]*(beats_per_measure*beatdiv)-piano_start)*PIANOROLL_CELLWIDTH,
PIANOROLL_Y-1-(kpkeydown-coct*12)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X+(pattlen[cpatt]*(beats_per_measure*beatdiv)-piano_start)*PIANOROLL_CELLWIDTH,
PIANOROLL_Y-(kpkeydown-coct*12+1)*PIANOROLL_CELLHEIGHT);
glVertex2f(PIANOROLL_X,
PIANOROLL_Y-(kpkeydown-coct*12+1)*PIANOROLL_CELLHEIGHT);
glEnd();
}
// draw the horizontal slider
draw_hslider(PIANOROLL_X, PIANOROLL_Y+12, (DS_WIDTH-(PIANOROLL_X+6)), 12,
piano_start, (DS_WIDTH-(PIANOROLL_X+4))/PIANOROLL_CELLWIDTH,
pattlen[cpatt]*(beats_per_measure*beatdiv),
slide_hover);
// draw the ui elements on the pattern page
draw_button(14, DS_HEIGHT-14, 16, "<<", patt_ui[B_PREV]);
sprintf(tmps, "%02d", cpatt);
draw_textbox(39, DS_HEIGHT-14, 16, 24, tmps, 0);
draw_button(64, DS_HEIGHT-14, 16, ">>", patt_ui[B_NEXT]);
draw_button(98, DS_HEIGHT-14, 16, "<<", patt_ui[B_SHORTER]);
sprintf(tmps, "%1d meas", (unsigned int)(pattlen[cpatt]));
draw_textbox(139, DS_HEIGHT-14, 16, 56, tmps, 0);
draw_button(180, DS_HEIGHT-14, 16, ">>", patt_ui[B_LONGER]);
draw_button(12, PIANOROLL_Y+15.5, 16, "DN", patt_ui[B_OCTDN]);
draw_button(32, PIANOROLL_Y+15.5, 16, "UP", patt_ui[B_OCTUP]);
draw_button(214, DS_HEIGHT-14, 16, "<<", patt_ui[B_PREVSYN]);
sprintf(tmps, "%02d:%s", csynth[cpatch], patchname[csynth][csynth[cpatch]]);
draw_textbox(322, DS_HEIGHT-14, 16, 188, tmps, patt_ui[B_SYNNAME]);
draw_button(430, DS_HEIGHT-14, 16, ">>", patt_ui[B_NEXTSYN]);
ticks=playpos / (OUTPUTFREQ/(bpm*256/60));
if (audiomode==AUDIOMODE_PATTERNPLAY) {
sprintf(tmps, "%02ld:%02ld", (ticks>>10), ((ticks>>6)&15));
} else {
sprintf(tmps, "play");
}
draw_textbox(482, DS_HEIGHT-14, 16, 42, tmps, patt_ui[B_PATTPLAY]);
draw_button(555, DS_HEIGHT-14, 16, "X", patt_ui[B_PATTCLEAR]);
draw_button(622, DS_HEIGHT-14, 16, "C", patt_ui[B_COPY]);
draw_button(644, DS_HEIGHT-14, 16, "V", patt_ui[B_PASTE]);
if (patt_clipboard_len==0) {
glColor4f(0,0,0,0.4f);
glBegin(GL_QUADS);
glVertex2f(644-8, (DS_HEIGHT-14)-8); glVertex2f(644+8, (DS_HEIGHT-14)-8);
glVertex2f(644+8, (DS_HEIGHT-14)+8); glVertex2f(644-8, (DS_HEIGHT-14)+8);
glEnd();
}
}