diff options
Diffstat (limited to 'attic/muse_qt4_evolution/awl/floatentry.cpp')
| -rw-r--r-- | attic/muse_qt4_evolution/awl/floatentry.cpp | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/attic/muse_qt4_evolution/awl/floatentry.cpp b/attic/muse_qt4_evolution/awl/floatentry.cpp new file mode 100644 index 00000000..7831614f --- /dev/null +++ b/attic/muse_qt4_evolution/awl/floatentry.cpp @@ -0,0 +1,317 @@ +//============================================================================= +// Awl +// Audio Widget Library +// $Id:$ +// +// Copyright (C) 2002-2006 by Werner Schweer and others +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2. +// +// This program 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 this program; if not, write to the Free Software +// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +//============================================================================= + +#include "floatentry.h" +#include "fastlog.h" + +#define TIMER1 400 +#define TIMER2 200 +#define TIMEC 7 +#define TIMER3 100 +#define TIMEC2 20 +#define TIMER4 50 + +namespace Awl { + +//--------------------------------------------------------- +// FloatEntry +//--------------------------------------------------------- + +FloatEntry::FloatEntry(QWidget* parent) + : QLineEdit(parent) + { + _id = 0; + _minValue = 0.0; + _maxValue = 1.0; + _log = false; + evx = 1.0; + _precision = 3; + timer = new QTimer(this); + connect(timer, SIGNAL(timeout()), SLOT(repeat())); + _value = 0.0f; + connect(this, SIGNAL(returnPressed()), SLOT(endEdit())); + setCursor(QCursor(Qt::ArrowCursor)); + updateValue(); + } + +//--------------------------------------------------------- +// setString +//--------------------------------------------------------- + +bool FloatEntry::setString(double v) + { + QString s; +// if (v < _minValue || v > _maxValue) { + if (v < _minValue) { + if (!_specialText.isEmpty()) + setText(_specialText); + return true; + } + s.setNum(v, 'f', _precision); + if (!_suffix.isEmpty()) { + // s += " "; + s += _suffix; + } + setText(s); + return false; + } + +//--------------------------------------------------------- +// setSValue +//--------------------------------------------------------- + +void FloatEntry::setSValue(const QString& s) + { + bool ok; + double v = s.toFloat(&ok); + if (ok && (v != _value)) { + if (v < _minValue) + v = _minValue; + if (v > _maxValue) + v = _maxValue; + _value = v; + updateValue(); + valueChange(); + } + } + +//--------------------------------------------------------- +// valueChange +//--------------------------------------------------------- + +void FloatEntry::valueChange() + { + emit valueChanged(value(), _id); + } + +//--------------------------------------------------------- +// incValue +//--------------------------------------------------------- + +void FloatEntry::incValue(double) + { + if (_value + 1.0 < _maxValue) { + _value = _value + 1.0; + updateValue(); + valueChange(); + } + } + +//--------------------------------------------------------- +// decValue +//--------------------------------------------------------- + +void FloatEntry::decValue(double) + { + if (_value - 1.0 > _minValue) { + _value = _value - 1.0; + updateValue(); + valueChange(); + } + } + +//--------------------------------------------------------- +// setPrecision +//--------------------------------------------------------- + +void FloatEntry::setPrecision(int v) + { + _precision = v; + setString(_value); + } + +//--------------------------------------------------------- +// sizeHint +//--------------------------------------------------------- + +QSize FloatEntry::sizeHint() const + { + QFontMetrics fm = fontMetrics(); + int h = fm.height() + 4; + int n = _precision + 3; + int w = fm.width(QString("-0.")) + fm.width('0') * n + 6; + return QSize(w, h); + } + +//--------------------------------------------------------- +// endEdit +//--------------------------------------------------------- + +void FloatEntry::endEdit() + { + if (QLineEdit::isModified()) + setSValue(text()); + clearFocus(); + } + +//--------------------------------------------------------- +// mousePressEvent +//--------------------------------------------------------- + +void FloatEntry::mousePressEvent(QMouseEvent* event) + { + button = event->button(); + starty = event->y(); + evx = double(event->x()); + timecount = 0; + repeat(); + timer->start(TIMER1); + } + +//--------------------------------------------------------- +// wheelEvent +//--------------------------------------------------------- + +void FloatEntry::wheelEvent(QWheelEvent* event) + { + int delta = event->delta(); + + if (delta < 0) + decValue(-1.0); + else if (delta > 0) + incValue(1.0); + } + +//--------------------------------------------------------- +// repeat +//--------------------------------------------------------- + +void FloatEntry::repeat() + { + if (timecount == 1) { + ++timecount; + timer->stop(); + timer->start(TIMER2); + return; + } + ++timecount; + if (timecount == TIMEC) { + timer->stop(); + timer->start(TIMER3); + } + if (timecount == TIMEC2) { + timer->stop(); + timer->start(TIMER4); + } + + switch (button) { + case Qt::LeftButton: + return; + case Qt::MidButton: + decValue(evx); + break; + case Qt::RightButton: + incValue(evx); + break; + default: + break; + } + } + +//--------------------------------------------------------- +// mouseReleaseEvent +//--------------------------------------------------------- + +void FloatEntry::mouseReleaseEvent(QMouseEvent*) + { + button = Qt::NoButton; + timer->stop(); + } + +//--------------------------------------------------------- +// mouseMoveEvent +//--------------------------------------------------------- + +void FloatEntry::mouseMoveEvent(QMouseEvent*) + { + switch (button) { + case Qt::LeftButton: + break; + case Qt::MidButton: + break; + case Qt::RightButton: + break; + default: + break; + } + } + +//--------------------------------------------------------- +// mouseDoubleClickEvent +//--------------------------------------------------------- + +void FloatEntry::mouseDoubleClickEvent(QMouseEvent* event) + { + if (event->button() != Qt::LeftButton) { + mousePressEvent(event); + return; + } + setFocus(); + QLineEdit::setFrame(true); + update(); + } + +//--------------------------------------------------------- +// setValue +//--------------------------------------------------------- + +void FloatEntry::setValue(double val) + { + if (_log) { + if (val == 0.0f) + _value = _minValue; + else + _value = fast_log10(val) * 20.0f; + } + else + _value = val; + updateValue(); + } + +//--------------------------------------------------------- +// updateValue +//--------------------------------------------------------- + +void FloatEntry::updateValue() + { + if (setString(_value)) { + // value is out of range: + if (_value > _maxValue) + _value = _maxValue; + else if (_value < _minValue) + _value = _minValue; + } + } + +//--------------------------------------------------------- +// value +//--------------------------------------------------------- + +double FloatEntry::value() const + { + double rv; + if (_log) + rv = pow(10.0, _value * 0.05f); + else + rv = _value; + return rv; + } +} + |