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| -rw-r--r-- | dgedit/canvastoollisten.cc | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/dgedit/canvastoollisten.cc b/dgedit/canvastoollisten.cc new file mode 100644 index 0000000..0734cf5 --- /dev/null +++ b/dgedit/canvastoollisten.cc @@ -0,0 +1,107 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * canvastoollisten.cc + * + * Fri Jul 29 16:57:48 CEST 2011 + * Copyright 2011 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * DrumGizmo 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "canvastoollisten.h" + +#define BUFSZ 1024 + +Player::Player(Canvas *c) +{ + canvas = c; + playing = false; + pos = 0; + + ao_initialize(); + + ao_sample_format sf; + sf.bits = 16; + sf.rate = 44100; + sf.channels = 1; + sf.byte_format = AO_FMT_NATIVE; + + dev = ao_open_live(ao_default_driver_id(), &sf, 0); +} + +Player::~Player() +{ + ao_close(dev); + ao_shutdown(); +} + +void Player::run() +{ + while(true) { + if(playing) { + short s[BUFSZ]; + for(size_t i = 0; i < BUFSZ; i++) { + if(i + pos < canvas->size) s[i] = canvas->data[pos + i] * ((2<<16) - 1); + else { + s[i] = 0; + playing = false; + } + } + + ao_play(dev, (char*)s, BUFSZ * sizeof(short)); + canvas->update(); + + pos += BUFSZ; + + } else { + msleep(100); + } + } +} + +CanvasToolListen::CanvasToolListen(Canvas *c) + : player(c) +{ + canvas = c ; + player.start(); +} + +bool CanvasToolListen::mousePressEvent(QMouseEvent *event) +{ + player.pos = canvas->unmapX(event->x()); + player.playing = true; + return true; +} + +bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event) +{ + player.playing = false; + return true; +} + +void CanvasToolListen::paintEvent(QPaintEvent *event, QPainter &painter) +{ + if(player.playing) { + painter.setPen(QColor(0, 127, 127)); + painter.drawLine(canvas->mapX(player.pos), + event->rect().y(), + canvas->mapX(player.pos), + event->rect().y() + event->rect().height()); + } +} |