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|
//=========================================================
// MusE
// Linux Music Editor
// $Id: master.cpp,v 1.3 2004/04/11 13:03:32 wschweer Exp $
// (C) Copyright 2000 Werner Schweer (ws@seh.de)
//=========================================================
#include <stdio.h>
#include <values.h>
#include <QCursor>
#include <QEvent>
#include <QMouseEvent>
#include <QPainter>
#include "globals.h"
#include "master.h"
#include "song.h"
#include "scrollscale.h"
#include "midi.h"
#include "midieditor.h"
#include "icons.h"
#include "audio.h"
extern void drawTickRaster(QPainter& p, int x, int y,
int w, int h, int quant);
//---------------------------------------------------------
// Master
//---------------------------------------------------------
Master::Master(MidiEditor* e, QWidget* parent, int xmag, int ymag)
: View(parent, xmag, ymag)
{
editor = e;
setBg(Qt::white);
vscroll = 0;
pos[0] = 0;
pos[1] = 0;
pos[2] = 0;
setFocusPolicy(Qt::StrongFocus); // Tim.
setMouseTracking(true);
connect(song, SIGNAL(posChanged(int, unsigned, bool)), this, SLOT(setPos(int, unsigned, bool)));
connect(song, SIGNAL(songChanged(int)), this, SLOT(redraw()));
}
//---------------------------------------------------------
// setPos
//---------------------------------------------------------
void Master::setPos(int idx, unsigned val, bool adjustScrollbar)
{
if (pos[idx] == val)
return;
int opos = mapx(pos[idx]);
int npos = mapx(val);
if (adjustScrollbar && idx == 0) {
switch (song->follow()) {
case Song::NO:
break;
case Song::JUMP:
if (npos >= width()) {
int ppos = val - rmapxDev(width()/8);
if (ppos < 0)
ppos = 0;
emit followEvent(ppos);
opos = mapx(pos[idx]);
npos = mapx(val);
}
else if (npos < 0) {
int ppos = val - rmapxDev(width()*3/4);
if (ppos < 0)
ppos = 0;
emit followEvent(ppos);
opos = mapx(pos[idx]);
npos = mapx(val);
}
break;
case Song::CONTINUOUS:
if (npos > (width()/2)) {
int ppos = pos[idx] - rmapxDev(width()/2);
if (ppos < 0)
ppos = 0;
emit followEvent(ppos);
opos = mapx(pos[idx]);
npos = mapx(val);
}
else if (npos < (width()/2)) {
int ppos = pos[idx] - rmapxDev(width()/2);
if (ppos < 0)
ppos = 0;
emit followEvent(ppos);
opos = mapx(pos[idx]);
npos = mapx(val);
}
break;
}
}
int x;
int w = 1;
if (opos > npos) {
w += opos - npos;
x = npos;
}
else {
w += npos - opos;
x = opos;
}
pos[idx] = val;
redraw(QRect(x-1, 0, w+2, height()));
}
//---------------------------------------------------------
// leaveEvent
//---------------------------------------------------------
void Master::leaveEvent(QEvent*)
{
emit tempoChanged(-1);
emit timeChanged(MAXINT);
}
//---------------------------------------------------------
// pdraw
//---------------------------------------------------------
void Master::pdraw(QPainter& p, const QRect& rect)
{
View::pdraw(p, rect); // calls draw()
p.resetTransform();
int x = rect.x();
int y = rect.y();
int w = rect.width() + 2;
int h = rect.height();
int wh = height();
//---------------------------------------------------
// draw Canvas Items
//---------------------------------------------------
const TempoList* tl = &tempomap;
for (ciTEvent i = tl->begin(); i != tl->end(); ++i) {
TEvent* e = i->second;
int etick = mapx(i->first);
int stick = mapx(i->second->tick);
int tempo = mapy(280000 - int(60000000000.0/(e->tempo)));
if (tempo < 0)
tempo = 0;
if (tempo < wh) {
p.fillRect(stick, tempo, etick-stick, wh, Qt::blue);
}
}
//---------------------------------------------------
// draw marker
//---------------------------------------------------
int xp = mapx(pos[0]);
if (xp >= x && xp < x+w) {
p.setPen(Qt::red);
p.drawLine(xp, y, xp, y+h);
}
xp = mapx(pos[1]);
if (xp >= x && xp < x+w) {
p.setPen(Qt::blue);
p.drawLine(xp, y, xp, y+h);
}
xp = mapx(pos[2]);
if (xp >= x && xp < x+w) {
p.setPen(Qt::blue);
p.drawLine(xp, y, xp, y+h);
}
}
//---------------------------------------------------------
// draw
//---------------------------------------------------------
void Master::draw(QPainter& p, const QRect& rect)
{
drawTickRaster(p, rect.x(), rect.y(),
rect.width(), rect.height(), 0);
}
//---------------------------------------------------------
// viewMousePressEvent
//---------------------------------------------------------
void Master::viewMousePressEvent(QMouseEvent* event)
{
start = event->pos();
Tool activeTool = tool;
// bool shift = event->state() & ShiftButton;
switch (activeTool) {
case PointerTool:
drag = DRAG_LASSO_START;
break;
case PencilTool:
drag = DRAG_NEW;
song->startUndo();
newVal(start.x(), start.x(), start.y());
break;
case RubberTool:
drag = DRAG_DELETE;
song->startUndo();
deleteVal(start.x(), start.x());
break;
default:
break;
}
}
//---------------------------------------------------------
// viewMouseMoveEvent
//---------------------------------------------------------
void Master::viewMouseMoveEvent(QMouseEvent* event)
{
QPoint pos = event->pos();
// QPoint dist = pos - start;
// bool moving = dist.y() >= 3 || dist.y() <= 3 || dist.x() >= 3 || dist.x() <= 3;
switch (drag) {
case DRAG_NEW:
newVal(start.x(), pos.x(), pos.y());
start = pos;
break;
case DRAG_DELETE:
deleteVal(start.x(), pos.x());
start = pos;
break;
default:
break;
}
emit tempoChanged(280000 - event->y());
int x = pos.x();
if (x < 0)
x = 0;
emit timeChanged(editor->rasterVal(x));
}
//---------------------------------------------------------
// viewMouseReleaseEvent
//---------------------------------------------------------
void Master::viewMouseReleaseEvent(QMouseEvent*)
{
switch (drag) {
case DRAG_RESIZE:
case DRAG_NEW:
case DRAG_DELETE:
song->endUndo(SC_TEMPO);
break;
default:
break;
}
drag = DRAG_OFF;
}
//---------------------------------------------------------
// deleteVal
//---------------------------------------------------------
bool Master::deleteVal1(unsigned int x1, unsigned int x2)
{
bool songChanged = false;
TempoList* tl = &tempomap;
for (iTEvent i = tl->begin(); i != tl->end(); ++i) {
if (i->first < x1)
continue;
if (i->first >= x2)
break;
iTEvent ii = i;
++ii;
if (ii != tl->end()) {
int tempo = ii->second->tempo;
audio->msgDeleteTempo(i->first, tempo, false);
songChanged = true;
}
}
return songChanged;
}
void Master::deleteVal(int x1, int x2)
{
if (deleteVal1(editor->rasterVal1(x1), x2))
redraw();
}
//---------------------------------------------------------
// setTool
//---------------------------------------------------------
void Master::setTool(int t)
{
if (tool == Tool(t))
return;
tool = Tool(t);
switch(tool) {
case PencilTool:
setCursor(QCursor(*pencilIcon, 4, 15));
break;
default:
setCursor(QCursor(Qt::ArrowCursor));
break;
}
}
//---------------------------------------------------------
// newVal
//---------------------------------------------------------
void Master::newVal(int x1, int x2, int y)
{
int xx1 = editor->rasterVal1(x1);
int xx2 = editor->rasterVal2(x2);
if (xx1 > xx2) {
int tmp = xx2;
xx2 = xx1;
xx1 = tmp;
}
deleteVal1(xx1, xx2);
audio->msgAddTempo(xx1, int(60000000000.0/(280000 - y)), false);
redraw();
}
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