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6*4882a593Smuzhiyun ** This file is part of the examples of the Qt Toolkit.
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39*4882a593Smuzhiyun ****************************************************************************/
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun #include "volumebutton.h"
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun #include <QtWidgets>
44*4882a593Smuzhiyun
VolumeButton(QWidget * parent)45*4882a593Smuzhiyun VolumeButton::VolumeButton(QWidget *parent) :
46*4882a593Smuzhiyun QToolButton(parent)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun setIcon(style()->standardIcon(QStyle::SP_MediaVolume));
49*4882a593Smuzhiyun setPopupMode(QToolButton::InstantPopup);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun QWidget *popup = new QWidget(this);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun slider = new QSlider(Qt::Horizontal, popup);
54*4882a593Smuzhiyun slider->setRange(0, 100);
55*4882a593Smuzhiyun connect(slider, &QAbstractSlider::valueChanged, this, &VolumeButton::volumeChanged);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun label = new QLabel(popup);
58*4882a593Smuzhiyun label->setAlignment(Qt::AlignCenter);
59*4882a593Smuzhiyun label->setNum(100);
60*4882a593Smuzhiyun label->setMinimumWidth(label->sizeHint().width());
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun typedef void(QLabel::*IntSlot)(int);
63*4882a593Smuzhiyun connect(slider, &QAbstractSlider::valueChanged, label, static_cast<IntSlot>(&QLabel::setNum));
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun QBoxLayout *popupLayout = new QHBoxLayout(popup);
66*4882a593Smuzhiyun popupLayout->setMargin(2);
67*4882a593Smuzhiyun popupLayout->addWidget(slider);
68*4882a593Smuzhiyun popupLayout->addWidget(label);
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun QWidgetAction *action = new QWidgetAction(this);
71*4882a593Smuzhiyun action->setDefaultWidget(popup);
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun menu = new QMenu(this);
74*4882a593Smuzhiyun menu->addAction(action);
75*4882a593Smuzhiyun setMenu(menu);
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
increaseVolume()78*4882a593Smuzhiyun void VolumeButton::increaseVolume()
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun slider->triggerAction(QSlider::SliderPageStepAdd);
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
descreaseVolume()83*4882a593Smuzhiyun void VolumeButton::descreaseVolume()
84*4882a593Smuzhiyun {
85*4882a593Smuzhiyun slider->triggerAction(QSlider::SliderPageStepSub);
86*4882a593Smuzhiyun }
87*4882a593Smuzhiyun
volume() const88*4882a593Smuzhiyun int VolumeButton::volume() const
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun return slider->value();
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
setVolume(int volume)93*4882a593Smuzhiyun void VolumeButton::setVolume(int volume)
94*4882a593Smuzhiyun {
95*4882a593Smuzhiyun slider->setValue(volume);
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98