Phonon

effectwidget.cpp
1/* This file is part of the KDE project
2 Copyright (C) 2006-2007 Matthias Kretz <kretz@kde.org>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) version 3, or any
8 later version accepted by the membership of KDE e.V. (or its
9 successor approved by the membership of KDE e.V.), Nokia Corporation
10 (or its successors, if any) and the KDE Free Qt Foundation, which shall
11 act as a proxy defined in Section 6 of version 3 of the license.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with this library. If not, see <http://www.gnu.org/licenses/>.
20
21*/
22
23#include "effectwidget.h"
24#include "effectwidget_p.h"
25
26#include <QtAlgorithms>
27#include <QList>
28
29#include "effect.h"
30#include "effectparameter.h"
31#include "phonondefs_p.h"
32#include <QBoxLayout>
33#include <QLabel>
34#include <QSpinBox>
35#include <QCheckBox>
36#include <QComboBox>
37#include <QSlider>
38#include <limits>
39
40#ifdef min
41#undef min
42#endif
43#ifdef max
44#undef max
45#endif
46static const qreal DEFAULT_MIN = std::numeric_limits<qreal>::min();
47static const qreal DEFAULT_MAX = std::numeric_limits<qreal>::max();
48static const int DEFAULT_MIN_INT = std::numeric_limits<int>::min();
49static const int DEFAULT_MAX_INT = std::numeric_limits<int>::max();
50static const int SLIDER_RANGE = 8;
51static const int TICKINTERVAL = 4;
52
53
54#ifndef QT_NO_PHONON_EFFECTWIDGET
55
56namespace Phonon
57{
58
59EffectWidget::EffectWidget(Effect *effect, QWidget *parent)
60 : QWidget(parent),
61 k_ptr(new EffectWidgetPrivate(effect))
62{
63 P_D(EffectWidget);
64 d->q_ptr = this;
65 d->autogenerateUi();
66}
67
68EffectWidget::~EffectWidget()
69{
70 delete k_ptr;
71}
72
73/*
74EffectWidget::EffectWidget(EffectWidgetPrivate &dd, QWidget *parent)
75 : QWidget(parent)
76 , k_ptr(&dd)
77{
78 P_D(EffectWidget);
79 d->q_ptr = this;
80 d->autogenerateUi();
81}
82*/
83
84EffectWidgetPrivate::EffectWidgetPrivate(Effect *e)
85 : effect(e)
86{
87 //TODO: look up whether there is a specialized widget for this effect. This
88 //could be a DSO or a Designer ui file found via KTrader.
89 //
90 //if no specialized widget is available:
91}
92
93void EffectWidgetPrivate::autogenerateUi()
94{
95 P_Q(EffectWidget);
96 QVBoxLayout *mainLayout = new QVBoxLayout(q);
97 mainLayout->setContentsMargins(QMargins());
98 const QList<Phonon::EffectParameter> parameters = effect->parameters();
99 for (int i = 0; i < parameters.count(); ++i) {
100 const EffectParameter &para = parameters.at(i);
101 QVariant value = effect->parameterValue(para);
102 QHBoxLayout *pLayout = new QHBoxLayout;
103 mainLayout->addLayout(pLayout);
104
105 QLabel *label = new QLabel(q);
106 pLayout->addWidget(label);
107 label->setText(para.name());
108#ifndef QT_NO_TOOLTIP
109 label->setToolTip(para.description());
110#endif
111
112 QWidget *control = nullptr;
113 switch (int(para.type())) {
114 case QVariant::String:
115 {
116 QComboBox *cb = new QComboBox(q);
117 control = cb;
118 if (value.type() == QVariant::Int) {
119 //value just defines the item index
120 for (int i = 0; i < para.possibleValues().count(); ++i) {
121 cb->addItem(para.possibleValues().at(i).toString());
122 }
123 cb->setCurrentIndex(value.toInt());
124 QObject::connect(cb, SIGNAL(currentIndexChanged(int)), q, SLOT(_k_setIntParameter(int)));
125 } else {
126 for (int i = 0; i < para.possibleValues().count(); ++i) {
127 const QVariant &item = para.possibleValues().at(i);
128 cb->addItem(item.toString());
129 if (item == value) {
130 cb->setCurrentIndex(cb->count() - 1);
131 }
132 }
133 QObject::connect(cb, SIGNAL(currentIndexChanged(QString)), q, SLOT(_k_setStringParameter(QString)));
134 }
135 }
136 break;
137 case QVariant::Bool:
138 {
139 QCheckBox *cb = new QCheckBox(q);
140 control = cb;
141 cb->setChecked(value.toBool());
142 QObject::connect(cb, SIGNAL(toggled(bool)), q, SLOT(_k_setToggleParameter(bool)));
143 }
144 break;
145 case QVariant::Int:
146 {
147 QSpinBox *sb = new QSpinBox(q);
148 control = sb;
149 bool minValueOk = false;
150 bool maxValueOk = false;
151 const int minValue = para.minimumValue().toInt(&minValueOk);
152 const int maxValue = para.maximumValue().toInt(&maxValueOk);
153
154 sb->setRange(minValueOk ? minValue : DEFAULT_MIN_INT, maxValueOk ? maxValue : DEFAULT_MAX_INT);
155 sb->setValue(value.toInt());
156 QObject::connect(sb, SIGNAL(valueChanged(int)), q, SLOT(_k_setIntParameter(int)));
157 }
158 break;
159 case QMetaType::Float:
160 case QVariant::Double:
161 {
162 const qreal minValue = para.minimumValue().canConvert(QVariant::Double) ?
163 para.minimumValue().toReal() : DEFAULT_MIN;
164 const qreal maxValue = para.maximumValue().canConvert(QVariant::Double) ?
165 para.maximumValue().toReal() : DEFAULT_MAX;
166
167 if (minValue == -1. && maxValue == 1.) {
168 //Special case values between -1 and 1.0 to use a slider for improved usability
169 QSlider *slider = new QSlider(Qt::Horizontal, q);
170 control = slider;
171 slider->setRange(-SLIDER_RANGE, +SLIDER_RANGE);
172 slider->setValue(int(SLIDER_RANGE * value.toReal()));
173 slider->setTickPosition(QSlider::TicksBelow);
174 slider->setTickInterval(TICKINTERVAL);
175 QObject::connect(slider, SIGNAL(valueChanged(int)), q, SLOT(_k_setSliderParameter(int)));
176 } else {
177 double step = 0.1;
178 if (qAbs(maxValue - minValue) > 50)
179 step = 1.0;
180 QDoubleSpinBox *sb = new QDoubleSpinBox(q);
181 control = sb;
182 sb->setRange(minValue, maxValue);
183 sb->setValue(value.toDouble());
184 sb->setSingleStep(step);
185 QObject::connect(sb, SIGNAL(valueChanged(double)), q,
186 SLOT(_k_setDoubleParameter(double)));
187 }
188 }
189 break;
190 default:
191 break;
192 }
193
194 if (control) {
195#ifndef QT_NO_TOOLTIP
196 control->setToolTip(para.description());
197#endif
198#ifndef QT_NO_SHORTCUT
199 label->setBuddy(control);
200#endif
201 pLayout->addWidget(control);
202 parameterForObject.insert(control, para);
203 }
204 }
205}
206
207void EffectWidgetPrivate::_k_setToggleParameter(bool checked)
208{
209 P_Q(EffectWidget);
210 if (parameterForObject.contains(q->sender())) {
211 effect->setParameterValue(parameterForObject[q->sender()], checked);
212 }
213}
214
215void EffectWidgetPrivate::_k_setIntParameter(int value)
216{
217 P_Q(EffectWidget);
218 if (parameterForObject.contains(q->sender())) {
219 effect->setParameterValue(parameterForObject[q->sender()], value);
220 }
221}
222
223void EffectWidgetPrivate::_k_setDoubleParameter(double value)
224{
225 P_Q(EffectWidget);
226 if (parameterForObject.contains(q->sender())) {
227 effect->setParameterValue(parameterForObject[q->sender()], value);
228 }
229}
230
231void EffectWidgetPrivate::_k_setStringParameter(const QString &value)
232{
233 P_Q(EffectWidget);
234 if (parameterForObject.contains(q->sender())) {
235 effect->setParameterValue(parameterForObject[q->sender()], value);
236 }
237}
238
239void EffectWidgetPrivate::_k_setSliderParameter(int value)
240{
241 P_Q(EffectWidget);
242 if (parameterForObject.contains(q->sender())) {
243 effect->setParameterValue(parameterForObject[q->sender()], double(value) / double(SLIDER_RANGE));
244 }
245}
246
247
248} // namespace Phonon
249
250
251#endif // QT_NO_PHONON_EFFECTWIDGET
252
253#include "moc_effectwidget.cpp"
254
255// vim: sw=4 ts=4
KStandardShortcut::label
QString label(StandardShortcut id)
QAbstractButton::setChecked
void setChecked(bool)
QAbstractSlider::setRange
void setRange(int min, int max)
QAbstractSlider::setValue
void setValue(int)
QBoxLayout::addLayout
void addLayout(QLayout *layout, int stretch)
QBoxLayout::addWidget
void addWidget(QWidget *widget, int stretch, Qt::Alignment alignment)
QComboBox::addItem
void addItem(const QIcon &icon, const QString &text, const QVariant &userData)
QComboBox::setCurrentIndex
void setCurrentIndex(int index)
QDoubleSpinBox::setRange
void setRange(double minimum, double maximum)
QDoubleSpinBox::setSingleStep
void setSingleStep(double val)
QDoubleSpinBox::setValue
void setValue(double val)
QLayout::setContentsMargins
void setContentsMargins(const QMargins &margins)
QList::at
const_reference at(qsizetype i) const const
QList::count
qsizetype count() const const
QObject::connect
QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, Functor functor)
QSlider::setTickInterval
void setTickInterval(int ti)
QSlider::setTickPosition
void setTickPosition(TickPosition position)
QSpinBox::setRange
void setRange(int minimum, int maximum)
QSpinBox::setValue
void setValue(int val)
Qt::Horizontal
Horizontal
QVariant::type
Type type() const const
QVariant::toBool
bool toBool() const const
QVariant::toDouble
double toDouble(bool *ok) const const
QVariant::toInt
int toInt(bool *ok) const const
QVariant::toReal
qreal toReal(bool *ok) const const
QVariant::toString
QString toString() const const
QWidget::setToolTip
void setToolTip(const QString &)
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