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//=========================================================
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// $Id: canvas.cpp,v 1.2 2003/10/29 14:19:26 lunar_shuttle Exp $
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// (C) Copyright 1999 Werner Schweer (ws@seh.de)
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//=========================================================
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#include <qpopupmenu.h>
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#include "../marker/marker.h"
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#define ABS(x) ((x) < 0) ? -(x) : (x)
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//---------------------------------------------------------
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//---------------------------------------------------------
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Canvas::Canvas(QWidget* parent, int sx, int sy, const char* name)
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: View(parent, sx, sy, name)
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pos[0] = song->cpos();
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pos[1] = song->lpos();
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pos[2] = song->rpos();
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connect(song, SIGNAL(posChanged(int, int, bool)), this, SLOT(setPos(int, int, bool)));
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//---------------------------------------------------------
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// set one of three markers
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// idx - 0-cpos 1-lpos 2-rpos
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// flag - emit followEvent()
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//---------------------------------------------------------
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void Canvas::setPos(int idx, int val, bool adjustScrollbar)
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int opos = mapx(pos[idx]);
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if (adjustScrollbar && idx == 0) {
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switch (song->follow()) {
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if (npos >= width()) {
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int ppos = val - rmapxDev(width()/8);
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emit followEvent(ppos);
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opos = mapx(pos[idx]);
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int ppos = val - rmapxDev(width()*3/4);
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emit followEvent(ppos);
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opos = mapx(pos[idx]);
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case Song::CONTINUOUS:
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if (npos > (width()/2)) {
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int ppos = pos[idx] - rmapxDev(width()/2);
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emit followEvent(ppos);
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opos = mapx(pos[idx]);
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else if (npos < (width()/2)) {
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int ppos = pos[idx] - rmapxDev(width()/2);
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emit followEvent(ppos);
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opos = mapx(pos[idx]);
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redraw(QRect(x-1, 0, w+2, height()));
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::draw(QPainter& p, const QRect& rect)
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// printf("draw canvas %x virt %d\n", this, virt());
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int w = rect.width();
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int h = rect.height();
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//---------------------------------------------------
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//---------------------------------------------------
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iCItem to(items.lower_bound(x2));
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for (iCItem i = items.begin(); i != to; ++i) {
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if (i->second->intersects(rect))
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drawItem(p, i->second, i->second->bbox().intersect(rect));
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to = moving.lower_bound(x2);
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for (iCItem i = moving.begin(); i != to; ++i) {
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if (i->second->intersects(rect))
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drawItem(p, i->second, i->second->bbox().intersect(rect));
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x = (x + xpos + rmapx(xorg)) * (-xmag);
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x = (x + xpos + rmapx(xorg)) / xmag;
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w = (w + xmag - 1) / xmag;
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y = (y + ypos + rmapy(yorg)) * (-ymag);
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y = (rect.y() + ypos + rmapy(yorg))/ymag;
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h = (rect.height()+ymag-1)/ymag;
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drawCanvas(p, QRect(x, y, w, h));
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//---------------------------------------------------
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//---------------------------------------------------
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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CItem* ci = i->second;
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r.moveCenter(map((ci->pos())));
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if (r.intersects(rect))
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drawItem(p, ci, rect);
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for (iCItem i = moving.begin(); i != moving.end(); ++i) {
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QRect r(i->second->bbox());
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r.moveCenter(map(i->second->pos()));
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if (r.intersects(rect))
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drawItem(p, i->second, rect);
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//---------------------------------------------------
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//---------------------------------------------------
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MarkerList* marker = song->marker();
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for (iMarker m = marker->begin(); m != marker->end(); ++m) {
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int xp = m->second.posTick();
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if (xp >= x && xp < x+w) {
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p.drawLine(xp, y, xp, y2);
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//---------------------------------------------------
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// draw location marker
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//---------------------------------------------------
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if (pos[1] >= x && pos[1] < x2) {
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p.drawLine(pos[1], y, pos[1], y2);
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if (pos[2] >= x && pos[2] < x2)
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p.drawLine(pos[2], y, pos[2], y2);
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if (pos[0] >= x && pos[0] < x2) {
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p.drawLine(pos[0], y, pos[0], y2);
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//---------------------------------------------------
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//---------------------------------------------------
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if (drag == DRAG_LASSO) {
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::deselectAll()
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for (iCItem i = items.begin(); i != items.end(); ++i)
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i->second->setSelected(false);
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::selectItem(CItem* e, bool flag)
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e->setSelected(flag);
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//---------------------------------------------------------
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// copy selection-List to moving-List
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//---------------------------------------------------------
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void Canvas::startMoving(const QPoint& pos, DragType)
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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if (i->second->isSelected()) {
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i->second->setMoving(true);
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moving.add(i->second);
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//---------------------------------------------------------
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// dir = 0 move in all directions
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// 1 move only horizontal
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// 2 move only vertical
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//---------------------------------------------------------
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void Canvas::moveItems(const QPoint& pos, int dir = 0)
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int dp = y2pitch(pos.y()) - y2pitch(start.y());
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int dx = pos.x() - start.x();
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for (iCItem i = moving.begin(); i != moving.end(); ++i) {
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int x = i->second->pos().x();
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int y = i->second->pos().y();
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int ny = pitch2y(y2pitch(y) + dp);
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QPoint mp(raster(QPoint(nx, ny)));
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if (i->second->mp() != mp) {
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i->second->setMp(mp);
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itemMoved(i->second, mp);
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::viewKeyPressEvent(QKeyEvent* event)
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//---------------------------------------------------------
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// viewMousePressEvent
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//---------------------------------------------------------
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void Canvas::viewMousePressEvent(QMouseEvent* event)
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keyState = event->state();
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// special events if right button is clicked while operations
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// like moving or drawing lasso is performed.
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if (event->stateAfter() & RightButton) {
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endMoveItems (start, MOVE_MOVE, 0);
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// ignore event if (another) button is already active:
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if (keyState & (LeftButton|RightButton|MidButton)) {
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bool shift = keyState & ShiftButton;
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bool alt = keyState & AltButton;
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bool ctrl = keyState & ControlButton;
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start = event->pos();
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//---------------------------------------------------
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// set curItem to item mouse is pointing
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//---------------------------------------------------
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curItem = items.find(start);
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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QRect box = i->second->bbox();
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int x = rmapxDev(box.x());
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int y = rmapyDev(box.y());
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int w = rmapxDev(box.width());
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int h = rmapyDev(box.height());
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r.moveBy(i->second->pos().x(), i->second->pos().y());
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if (r.contains(start)) {
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if (curItem && (event->button() == QMouseEvent::MidButton)) {
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if (!curItem->isSelected()) {
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selectItem(curItem, true);
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startDrag(curItem, shift);
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else if (event->button() == QMouseEvent::RightButton) {
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itemPopupMenu = genItemPopup(curItem);
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int n = itemPopupMenu->exec(QCursor::pos());
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itemPopup(curItem, n, start);
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delete itemPopupMenu;
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canvasPopupMenu = genCanvasPopup();
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if (canvasPopupMenu) {
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int n = canvasPopupMenu->exec(QCursor::pos(), 0);
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delete canvasPopupMenu;
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else if (event->button() == QMouseEvent::LeftButton) {
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itemPressed(curItem);
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if (curItem->part() != curPart) {
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curPart = curItem->part();
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curPartId = curPart->sn();
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drag = DRAG_COPY_START;
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drag = DRAG_CLONE_START;
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// printf("CLONE start\n");
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else if (ctrl) { //Select all on the same pitch (e.g. same y-value)
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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if (i->second->y() == curItem->y() )
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selectItem(i->second, true);
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drag = DRAG_MOVE_START;
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drag = DRAG_LASSO_START;
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int dx = start.x() - curItem->x();
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curItem->setWidth(dx);
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start.setX(curItem->x());
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curItem = newItem(start, event->state());
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selectItem(curItem, true);
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//---------------------------------------------------------
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// viewMouseMoveEvent
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//---------------------------------------------------------
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void Canvas::viewMouseMoveEvent(QMouseEvent* event)
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QPoint pos = event->pos();
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QPoint dist = pos - start;
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int ax = ABS(rmapx(dist.x()));
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int ay = ABS(rmapy(dist.y()));
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bool moving = (ax >= 2) || (ay > 2);
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case DRAG_LASSO_START:
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// proceed with DRAG_LASSO:
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lasso = QRect(start.x(), start.y(), dist.x(), dist.y());
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case DRAG_MOVE_START:
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case DRAG_COPY_START:
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case DRAG_CLONE_START:
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if (keyState & ControlButton) {
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if (drag == DRAG_MOVE_START)
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else if (drag == DRAG_COPY_START)
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if (drag == DRAG_MOVE_START)
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else if (drag == DRAG_COPY_START)
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if (drag == DRAG_MOVE_START)
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else if (drag == DRAG_COPY_START)
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if (!curItem->isSelected()) {
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if (drag == DRAG_MOVE)
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selectItem(curItem, true);
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if (drag == DRAG_MOVE)
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else if (drag == DRAG_COPY)
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startMoving(pos, dt);
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curItem->setWidth(1);
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curItem->setWidth(dist.x());
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//---------------------------------------------------------
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// viewMouseReleaseEvent
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//---------------------------------------------------------
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void Canvas::viewMouseReleaseEvent(QMouseEvent* event)
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// printf("release %x %x\n", event->state(), event->button());
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if (event->state() & (LeftButton|RightButton|MidButton) & ~(event->button())) {
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printf("ignore %x %x\n", keyState, event->button());
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QPoint pos = event->pos();
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bool shift = event->state() & ShiftButton;
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bool redrawFlag = false;
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case DRAG_MOVE_START:
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case DRAG_COPY_START:
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case DRAG_CLONE_START:
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selectItem(curItem, !(shift && curItem->isSelected()));
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itemReleased(curItem, curItem->pos());
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endMoveItems(pos, MOVE_COPY, 0);
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endMoveItems(pos, MOVE_COPY, 1);
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endMoveItems(pos, MOVE_COPY, 2);
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endMoveItems(pos, MOVE_MOVE, 0);
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endMoveItems(pos, MOVE_MOVE, 1);
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endMoveItems(pos, MOVE_MOVE, 2);
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endMoveItems(pos, MOVE_CLONE, 0);
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endMoveItems(pos, MOVE_CLONE, 1);
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endMoveItems(pos, MOVE_CLONE, 2);
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resizeItem(curItem, false);
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newItem(curItem, false);
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case DRAG_LASSO_START:
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lasso.setRect(-1, -1, -1, -1);
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lasso = lasso.normalize();
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::selectLasso(bool toggle)
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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if (i->second->intersects(lasso)) {
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selectItem(i->second, !(toggle && i->second->isSelected()));
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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QRect box = i->second->bbox();
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int x = rmapxDev(box.x());
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int y = rmapyDev(box.y());
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int w = rmapxDev(box.width());
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int h = rmapyDev(box.height());
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r.moveBy(i->second->pos().x(), i->second->pos().y());
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if (r.intersects(lasso)) {
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selectItem(i->second, !(toggle && i->second->isSelected()));
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//---------------------------------------------------------
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// dir = 0 move in all directions
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// 1 move only horizontal
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// 2 move only vertical
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//---------------------------------------------------------
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void Canvas::endMoveItems(const QPoint& pos, DragType dragtype, int dir)
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int dp = y2pitch(pos.y()) - y2pitch(start.y());
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int dx = pos.x() - start.x();
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for (iCItem i = moving.begin(); i != moving.end(); ++i) {
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int x = i->second->pos().x();
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int y = i->second->pos().y();
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int ny = pitch2y(y2pitch(y) + dp);
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QPoint newpos = raster(QPoint(nx, ny));
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selectItem(i->second, true);
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if (moveItem(i->second, newpos, dragtype))
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i->second->move(newpos);
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if (moving.size() == 1) {
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itemReleased(curItem, newpos);
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if (dragtype == MOVE_COPY || dragtype == MOVE_CLONE)
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selectItem(i->second, false);
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::deleteItem(const QPoint& p)
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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if (i->second->contains(p)) {
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if (deleteItem(i->second))
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selectItem(i->second, false);
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if (drag == DRAG_DELETE)
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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QRect box = i->second->bbox();
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int x = rmapxDev(box.x());
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int y = rmapyDev(box.y());
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int w = rmapxDev(box.width());
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int h = rmapyDev(box.height());
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r.moveBy(i->second->pos().x(), i->second->pos().y());
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if (deleteItem(i->second)) {
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selectItem(i->second, false);
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::setTool(int t)
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if (_tool == Tool(t))
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::setCursor()
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QWidget::setCursor(QCursor(SizeHorCursor));
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QWidget::setCursor(QCursor(SizeVerCursor));
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QWidget::setCursor(QCursor(SizeAllCursor));
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// QWidget::setCursor(QCursor(SizeHorCursor));
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case DRAG_COPY_START:
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case DRAG_CLONE_START:
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case DRAG_MOVE_START:
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case DRAG_LASSO_START:
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QWidget::setCursor(QCursor(*pencilIcon, 4, 15));
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QWidget::setCursor(QCursor(*deleteIcon, 4, 15));
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QWidget::setCursor(QCursor(*glueIcon, 4, 15));
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QWidget::setCursor(QCursor(*cutIcon, 4, 15));
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QWidget::setCursor(QCursor(*editmuteIcon, 4, 15));
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QWidget::setCursor(QCursor(ArrowCursor));
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::keyPress(QKeyEvent* event)
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//Alt-P, shortcut for both DrumEditor and PianoRoll. Sets locators to include selected events
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if (event->key() == Key_P && event->state() & AltButton) {
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int tick_min = INT_MAX;
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for (iCItem i= items.begin(); i != items.end(); i++) {
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if (!i->second->isSelected())
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int tick = i->second->x();
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int len = i->second->event()->lenTick();
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if (tick + len > tick_max)
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tick_max = tick + len;
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song->setPos(1, tick_min);
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song->setPos(2, tick_max);
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//---------------------------------------------------------
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//---------------------------------------------------------
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bool Canvas::isSingleSelection()
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return selectionSize() == 1;
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//---------------------------------------------------------
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//---------------------------------------------------------
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int Canvas::selectionSize()
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for (iCItem i = items.begin(); i != items.end(); ++i) {
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if (i->second->isSelected())
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//---------------------------------------------------------
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//---------------------------------------------------------
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QPopupMenu* Canvas::genCanvasPopup()
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if (canvasTools == 0)
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QPopupMenu* canvasPopup = new QPopupMenu(this);
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for (unsigned i = 0; i < 9; ++i) {
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if ((canvasTools & (1 << i))==0)
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canvasPopup->insertItem(**toolList[i].icon, tr(toolList[i].tip), 1<<i);
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canvasPopup->setActiveItem(0);
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//---------------------------------------------------------
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//---------------------------------------------------------
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void Canvas::canvasPopup(int n)
added
removed
widgets/canvas.cpp
