174 lines
3.7 KiB
C++
174 lines
3.7 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "floatslider.h"
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#include <cmath>
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#include <QDebug>
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#include "common/decibel.h"
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namespace olive {
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#define super DecimalSliderBase
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FloatSlider::FloatSlider(QWidget *parent) :
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super(parent),
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display_type_(kNormal)
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{
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SetValue(0.0);
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}
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double FloatSlider::GetValue() const
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{
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return GetValueInternal().toDouble();
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}
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void FloatSlider::SetValue(const double &d)
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{
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SetValueInternal(d);
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}
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void FloatSlider::SetDefaultValue(const double &d)
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{
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super::SetDefaultValue(d);
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}
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void FloatSlider::SetMinimum(const double &d)
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{
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SetMinimumInternal(d);
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}
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void FloatSlider::SetMaximum(const double &d)
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{
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SetMaximumInternal(d);
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}
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void FloatSlider::SetDisplayType(const FloatSlider::DisplayType &type)
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{
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display_type_ = type;
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switch (display_type_) {
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case kNormal:
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ClearFormat();
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break;
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case kDecibel:
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SetFormat(tr("%1 dB"));
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break;
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case kPercentage:
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SetFormat(tr("%1%"));
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break;
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}
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}
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double FloatSlider::TransformValueToDisplay(double val, DisplayType display)
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{
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switch (display) {
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case kNormal:
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break;
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case kDecibel:
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val = Decibel::fromLinear(val);
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break;
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case kPercentage:
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val *= 100.0;
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break;
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}
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return val;
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}
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double FloatSlider::TransformDisplayToValue(double val, DisplayType display)
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{
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switch (display) {
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case kNormal:
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break;
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case kDecibel:
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val = Decibel::toLinear(val);
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break;
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case kPercentage:
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val *= 0.01;
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break;
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}
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return val;
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}
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QString FloatSlider::ValueToString(double val, FloatSlider::DisplayType display, int decimal_places, bool autotrim_decimal_places)
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{
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// Return negative infinity for zero volume
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if (display == kDecibel && qIsNull(val)) {
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return tr("\xE2\x88\x9E");
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}
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return FloatToString(TransformValueToDisplay(val, display), decimal_places, autotrim_decimal_places);
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}
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QString FloatSlider::ValueToString(const QVariant &v) const
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{
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return ValueToString(v.toDouble() + GetOffset().toDouble(), display_type_, GetDecimalPlaces(), GetAutoTrimDecimalPlaces());
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}
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QVariant FloatSlider::StringToValue(const QString &s, bool *ok) const
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{
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bool valid;
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double val = s.toDouble(&valid);
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// If we were given an `ok` pointer, set it to `valid`
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if (ok) {
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*ok = valid;
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}
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// If valid, transform it from display
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if (valid) {
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val = TransformDisplayToValue(val, display_type_);
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}
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// Return un-offset value
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return val - GetOffset().toDouble();
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}
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QVariant FloatSlider::AdjustDragDistanceInternal(const QVariant &start, const double &drag) const
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{
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switch (display_type_) {
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case kNormal:
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// No change here
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break;
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case kDecibel:
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{
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double current_db = Decibel::fromLinear(start.toDouble());
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current_db += drag;
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double adjusted_linear = Decibel::toLinear(current_db);
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return adjusted_linear;
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}
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case kPercentage:
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return super::AdjustDragDistanceInternal(start, drag * 0.01);
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}
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return super::AdjustDragDistanceInternal(start, drag);
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}
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void FloatSlider::ValueSignalEvent(const QVariant &value)
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{
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emit ValueChanged(value.toDouble());
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}
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}
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