Phonon

volumeslider.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 "volumeslider.h"
24#include "volumeslider_p.h"
25#include "audiooutput.h"
26#include "phonondefs_p.h"
27#include "phononnamespace_p.h"
28#include "factory_p.h"
29
30#ifndef QT_NO_PHONON_VOLUMESLIDER
31
32namespace Phonon
33{
34VolumeSlider::VolumeSlider(QWidget *parent)
35 : QWidget(parent),
36 k_ptr(new VolumeSliderPrivate(this))
37{
38 P_D(VolumeSlider);
39#ifndef QT_NO_TOOLTIP
40 setToolTip(tr("Volume: %1%").arg(100));
41#endif
42#ifndef QT_NO_WHATSTHIS
43 setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%, the rightmost is %1%").arg(100));
44#endif
45
46 connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_sliderChanged(int)));
47 connect(&d->slider, SIGNAL(sliderPressed()), this, SLOT(_k_sliderPressed()));
48 connect(&d->slider, SIGNAL(sliderReleased()), this, SLOT(_k_sliderReleased()));
49 connect(&d->slider, SIGNAL(scrollStart()), this, SLOT(_k_sliderPressed()));
50 connect(&d->slider, SIGNAL(scrollEnd()), this, SLOT(_k_sliderReleased()));
51 connect(&d->muteButton, SIGNAL(clicked()), SLOT(_k_buttonClicked()));
52
53 setFocusProxy(&d->slider);
54}
55
56VolumeSlider::VolumeSlider(AudioOutput *output, QWidget *parent)
57 : QWidget(parent),
58 k_ptr(new VolumeSliderPrivate(this))
59{
60 P_D(VolumeSlider);
61#ifndef QT_NO_TOOLTIP
62 setToolTip(tr("Volume: %1%").arg(100));
63#endif
64#ifndef QT_NO_WHATSTHIS
65 setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%, the rightmost is %1%").arg(100));
66#endif
67
68 connect(&d->slider, SIGNAL(valueChanged(int)), SLOT(_k_sliderChanged(int)));
69 connect(&d->slider, SIGNAL(sliderPressed()), this, SLOT(_k_sliderPressed()));
70 connect(&d->slider, SIGNAL(sliderReleased()), this, SLOT(_k_sliderReleased()));
71 connect(&d->slider, SIGNAL(scrollStart()), this, SLOT(_k_sliderPressed()));
72 connect(&d->slider, SIGNAL(scrollEnd()), this, SLOT(_k_sliderReleased()));
73 connect(&d->muteButton, SIGNAL(clicked()), SLOT(_k_buttonClicked()));
74
75 if (output) {
76 d->output = output;
77 d->slider.setValue(qRound(100 * output->volume()));
78 d->slider.setEnabled(true);
79 d->muteButton.setEnabled(true);
80 connect(output, SIGNAL(volumeChanged(qreal)), SLOT(_k_volumeChanged(qreal)));
81 connect(output, SIGNAL(mutedChanged(bool)), SLOT(_k_mutedChanged(bool)));
82 }
83
84 setFocusProxy(&d->slider);
85}
86
87VolumeSlider::~VolumeSlider()
88{
89 delete k_ptr;
90}
91
92bool VolumeSlider::isMuteVisible() const
93{
94 return !k_ptr->muteButton.isHidden();
95}
96
97void VolumeSlider::setMuteVisible(bool visible)
98{
99 k_ptr->muteButton.setVisible(visible);
100}
101
102QSize VolumeSlider::iconSize() const
103{
104 return k_ptr->muteButton.iconSize();
105}
106
107void VolumeSlider::setIconSize(const QSize &iconSize)
108{
109 pDebug() << Q_FUNC_INFO << iconSize;
110 k_ptr->muteButton.setIconSize(iconSize);
111}
112
113qreal VolumeSlider::maximumVolume() const
114{
115 return k_ptr->slider.maximum() * 0.01;
116}
117
118void VolumeSlider::setMaximumVolume(qreal volume)
119{
120 int max = static_cast<int>(volume * 100);
121 k_ptr->slider.setMaximum(max);
122#ifndef QT_NO_WHATSTHIS
123 setWhatsThis(tr("Use this slider to adjust the volume. The leftmost position is 0%, the rightmost is %1%")
124 .arg(max));
125#endif
126}
127
128Qt::Orientation VolumeSlider::orientation() const
129{
130 return k_ptr->slider.orientation();
131}
132
133void VolumeSlider::setOrientation(Qt::Orientation o)
134{
135 P_D(VolumeSlider);
136 Qt::Alignment align = (o == Qt::Horizontal ? Qt::AlignVCenter : Qt::AlignHCenter);
137 d->layout.setAlignment(&d->muteButton, align);
138 d->layout.setAlignment(&d->slider, align);
139 d->layout.setDirection(o == Qt::Horizontal ? QBoxLayout::LeftToRight : QBoxLayout::TopToBottom);
140 d->slider.setOrientation(o);
141}
142
143AudioOutput *VolumeSlider::audioOutput() const
144{
145 P_D(const VolumeSlider);
146 return d->output;
147}
148
149void VolumeSlider::setAudioOutput(AudioOutput *output)
150{
151 P_D(VolumeSlider);
152 if (d->output) {
153 disconnect(d->output, nullptr, this, nullptr);
154 }
155 d->output = output;
156 if (output) {
157 d->slider.setValue(qRound(100 * output->volume()));
158 d->slider.setEnabled(true);
159 d->muteButton.setEnabled(true);
160
161 d->_k_volumeChanged(output->volume());
162 d->_k_mutedChanged(output->isMuted());
163
164 connect(output, SIGNAL(volumeChanged(qreal)), SLOT(_k_volumeChanged(qreal)));
165 connect(output, SIGNAL(mutedChanged(bool)), SLOT(_k_mutedChanged(bool)));
166 } else {
167 d->slider.setValue(100);
168 d->slider.setEnabled(false);
169 d->muteButton.setEnabled(false);
170 }
171}
172
173void VolumeSliderPrivate::_k_buttonClicked()
174{
175 if (output) {
176 output->setMuted(!output->isMuted());
177 } else {
178 slider.setEnabled(false);
179 muteButton.setEnabled(false);
180 }
181}
182
183void VolumeSliderPrivate::_k_sliderPressed()
184{
185 sliderPressed = true;
186}
187
188void VolumeSliderPrivate::_k_sliderReleased()
189{
190 sliderPressed = false;
191 if (output) {
192 _k_volumeChanged(output->volume());
193 }
194}
195
196void VolumeSliderPrivate::_k_mutedChanged(bool muted)
197{
198#ifndef QT_NO_TOOLTIP
199 P_Q(VolumeSlider);
200#endif
201 if (muted) {
202#ifndef QT_NO_TOOLTIP
203 q->setToolTip(VolumeSlider::tr("Muted"));
204#endif
205 muteButton.setIcon(mutedIcon);
206 } else {
207#ifndef QT_NO_TOOLTIP
208 q->setToolTip(VolumeSlider::tr("Volume: %1%").arg(static_cast<int>(output->volume() * 100.0)));
209#endif
210 muteButton.setIcon(volumeIcon);
211 }
212}
213
214void VolumeSliderPrivate::_k_sliderChanged(int value)
215{
216#ifndef QT_NO_TOOLTIP
217 P_Q(VolumeSlider);
218#endif
219
220 if (output) {
221#ifndef QT_NO_TOOLTIP
222 if (!output->isMuted()) {
223 q->setToolTip(VolumeSlider::tr("Volume: %1%").arg(value));
224 }
225#endif
226
227 qreal newvolume = (static_cast<qreal>(value)) * 0.01;
228 if (!ignoreVolumeChangeObserve && output->volume() != newvolume) {
229 ignoreVolumeChangeAction = true;
230 output->setVolume(newvolume);
231 }
232 } else {
233 slider.setEnabled(false);
234 muteButton.setEnabled(false);
235 }
236
237 ignoreVolumeChangeObserve = false;
238}
239
240void VolumeSliderPrivate::_k_volumeChanged(qreal value)
241{
242 if (sliderPressed) {
243 return;
244 }
245
246 int newslidervalue = qRound(100 * value);
247 if (!ignoreVolumeChangeAction && slider.value() != newslidervalue) {
248 ignoreVolumeChangeObserve = true;
249 slider.setValue(newslidervalue);
250 }
251
252 ignoreVolumeChangeAction = false;
253}
254
255bool VolumeSlider::hasTracking() const
256{
257 return k_ptr->slider.hasTracking();
258}
259
260void VolumeSlider::setTracking(bool tracking)
261{
262 k_ptr->slider.setTracking(tracking);
263}
264
265int VolumeSlider::pageStep() const
266{
267 return k_ptr->slider.pageStep();
268}
269
270void VolumeSlider::setPageStep(int milliseconds)
271{
272 k_ptr->slider.setPageStep(milliseconds);
273}
274
275int VolumeSlider::singleStep() const
276{
277 return k_ptr->slider.singleStep();
278}
279
280void VolumeSlider::setSingleStep(int milliseconds)
281{
282 k_ptr->slider.setSingleStep(milliseconds);
283}
284
285} // namespace Phonon
286
287#endif //QT_NO_PHONON_VOLUMESLIDER
288
289#include "moc_volumeslider.cpp"
290
291// vim: sw=4 et
Phonon::AudioOutput
Class for audio output to the soundcard.
Definition audiooutput.h:49
Phonon::AudioOutput::volume
qreal volume
This is the current loudness of the output (it is using Stevens' law to calculate the change in volta...
Definition audiooutput.h:67
Phonon::VolumeSlider
Widget providing a slider to control the volume of an AudioOutput.
Definition volumeslider.h:45
Phonon::VolumeSlider::tracking
bool tracking
This property holds whether slider tracking is enabled.
Definition volumeslider.h:69
Phonon::VolumeSlider::setAudioOutput
void setAudioOutput(Phonon::AudioOutput *)
Sets the audio output object to be controlled by this slider.
Definition volumeslider.cpp:149
Phonon::VolumeSlider::orientation
Qt::Orientation orientation
This property holds the orientation of the slider.
Definition volumeslider.h:59
Phonon::VolumeSlider::maximumVolume
qreal maximumVolume
This property holds the maximum volume that can be set with this slider.
Definition volumeslider.h:53
Phonon::VolumeSlider::pageStep
int pageStep
This property holds the page step.
Definition volumeslider.h:79
Phonon::VolumeSlider::iconSize
QSize iconSize
the icon size used for the mute button/icon.
Definition volumeslider.h:103
Phonon::VolumeSlider::singleStep
int singleStep
This property holds the single step.
Definition volumeslider.h:89
Phonon::VolumeSlider::VolumeSlider
VolumeSlider(QWidget *parent=nullptr)
Constructs a new volume slider with a parent.
Definition volumeslider.cpp:34
QObject::connect
QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, Functor functor)
QObject::disconnect
bool disconnect(const QMetaObject::Connection &connection)
QObject::qobject_cast
T qobject_cast(QObject *object)
QObject::tr
QString tr(const char *sourceText, const char *disambiguation, int n)
Qt::Alignment
typedef Alignment
Qt::Orientation
Orientation
QWidget::setFocusProxy
void setFocusProxy(QWidget *w)
QWidget::setToolTip
void setToolTip(const QString &)
QWidget::setWhatsThis
void setWhatsThis(const QString &)
This file is part of the KDE documentation.
Documentation copyright © 1996-2024 The KDE developers.
Generated on Tue Mar 26 2024 11:20:24 by doxygen 1.10.0 written by Dimitri van Heesch, © 1997-2006

KDE's Doxygen guidelines are available online.