/* med-vol.c: volume handling routines, by Teijo Kinnunen, 1990 */
#include "med.h"
#include "medproto.h"

extern char volstr[],mvolstr[];
extern WORD mousex,mousey;
extern UWORD nykyinenosio;
extern struct Window *window;
static UBYTE seltrkvol = 0;
extern struct RastPort *wrp;
extern struct Gadget far gadget8[];
extern struct StringInfo strinfo[];
extern struct Kappale far song;
static void SelectTrackVol(void);

static void SelectTrackVol()
{
	register UBYTE row = (mousey - 28) / 10,col = (mousex - 44) / 18;
	if((seltrkvol = 8 * row + col) > 15) seltrkvol = 15; /* foolproof */
}

void ShowVols()
{
	UWORD pos1,pos2;
	UBYTE tcnt;
	if(nykyinenosio == 8) {
		pos1 = RemoveGadget(window,&gadget8[2]);
		pos2 = RemoveGadget(window,&gadget8[7]);
	}
	strinfo[6].BufferPos = strinfo[7].BufferPos = 0;
	strinfo[6].DispPos = strinfo[7].DispPos = 0;
	strinfo[6].LongInt = (LONG)(song.trkvol[seltrkvol]);
	strinfo[7].LongInt = (LONG)(song.mastervol);
	stcu_d(volstr,song.trkvol[seltrkvol]);
	stcu_d(mvolstr,song.mastervol);
	if(nykyinenosio == 8) {
		AddGadget(window,&gadget8[2],pos1);
		AddGadget(window,&gadget8[7],pos2);
		RefreshGList(&gadget8[2],window,NULL,1);
		RefreshGList(&gadget8[7],window,NULL,1);
	}
	for(tcnt = 0; tcnt < 16; tcnt++) {
		if(tcnt == seltrkvol) SetAPen(wrp,5); else SetAPen(wrp,1);
		if(tcnt < 8) prtnum((UWORD)(song.trkvol[tcnt]),(UWORD)(44 + 18 * tcnt),34,2);
		else prtnum((UWORD)(song.trkvol[tcnt]),(UWORD)(44 + 18 * (tcnt - 8)),44,2);
	}
	SetAPen(wrp,0);
	prtnum((UWORD)seltrkvol,15,58,2);
}
		
void Handle8(UWORD gid)
{
	switch(gid) {
		case 0x806:	if(song.mastervol > 1) song.mastervol--;
				break;
		case 0x805:	if(song.mastervol > 11) song.mastervol -= 10;
				else song.mastervol = 1;
				break;
		case 0x808:	if(song.mastervol < 64) song.mastervol++;
				break;
		case 0x809:	if(song.mastervol < 54) song.mastervol += 10;
				else song.mastervol = 64;
				break;
		case 0x801:	if(song.trkvol[seltrkvol] > 1) song.trkvol[seltrkvol]--;
				break;
		case 0x800:	if(song.trkvol[seltrkvol] > 11) song.trkvol[seltrkvol] -= 10;
				else song.trkvol[seltrkvol] = 1;
				break;
		case 0x803:	if(song.trkvol[seltrkvol] < 64) song.trkvol[seltrkvol]++;
				break;
		case 0x804:	if(song.trkvol[seltrkvol] < 54) song.trkvol[seltrkvol] += 10;
				else song.trkvol[seltrkvol] = 64;
				break;
		case 0x802:	if(strinfo[6].LongInt >= 64) song.trkvol[seltrkvol] = 64;
				else if(strinfo[6].LongInt < 1) song.trkvol[seltrkvol] = 1;
				else song.trkvol[seltrkvol] = (UBYTE)(strinfo[6].LongInt);
				break;
		case 0x807:	if(strinfo[7].LongInt >= 64) song.mastervol = 64;
				else if(strinfo[7].LongInt < 1) song.mastervol = 1;
				else song.mastervol = (UBYTE)(strinfo[7].LongInt);
				break;
		case 0x810:	SelectTrackVol();
				break;
	}
	ShowVols();
}