1 #include "messagebox.h"
2 #include <QEventLoop>
3 #include <QPushButton>
4 #include <QLabel>
5 #include <QHBoxLayout>
6 #include <QVBoxLayout>
7 #include <QPainter>
8 #include <QMessageBox>
9 #include <QApplication>
10 #include <QDesktopWidget>
11 #include <QMouseEvent>
12 #include <QDebug>
13 #include <QTimer>
14 #include <QPropertyAnimation>
15
MessageBox(QWidget * parent,const QString & text,Button button)16 MessageBox::MessageBox(QWidget *parent, const QString &text, Button button) : QWidget(parent)
17 {
18 this->resize(300, 200);
19 m_pLoop = new QEventLoop(this);
20 QLabel *label =new QLabel;
21 label->setTextFormat(Qt::RichText);
22 label->setWordWrap(true);
23 label->setAlignment(Qt::AlignCenter);
24 label->setText(text);
25
26 QVBoxLayout *VLayout = new QVBoxLayout(this);
27 VLayout->addSpacing(30);
28 VLayout->addWidget(label);
29
30 QHBoxLayout *hLayout = new QHBoxLayout;
31 QPushButton *yes = new QPushButton(tr("OK"), this);
32 connect(yes, &QPushButton::clicked, this, [=](){
33 m_pLoop->exit(Button::yes);
34 });
35
36 QPushButton *no = new QPushButton(tr("Cancel"), this);
37 connect(no, &QPushButton::clicked, this, [=](){
38 m_pLoop->exit(Button::no);
39 });
40
41 switch (button) {
42 case Button::yes:
43 {
44 yes->setVisible(true);
45 no->setVisible(false);
46 }
47
48 break;
49 case Button::no:
50 {
51 yes->setVisible(false);
52 no->setVisible(false);
53 }
54 break;
55 case Button::yes_no:
56 {
57 yes->setVisible(true);
58 yes->setVisible(true);
59 }break;
60
61 default:
62 break;
63 }
64 hLayout->addStretch();
65 hLayout->addWidget(yes);
66 hLayout->addWidget(no);
67 VLayout->addLayout(hLayout);
68 setAttribute(Qt::WA_DeleteOnClose);
69 }
70
MessageBox(QWidget * parent)71 MessageBox::MessageBox(QWidget *parent):QWidget(parent)
72 {
73 setAttribute(Qt::WA_DeleteOnClose);
74 }
75
exec()76 int MessageBox::exec()
77 {
78 QWidget *parentWidget = dynamic_cast<QWidget*>(parent());
79 if(parentWidget != Q_NULLPTR)
80 {
81 int x = (parentWidget->width()-width())/2;
82 int y = (parentWidget->height()-height())/2;
83 move(x, y);
84 filterChild(parentWidget);
85
86 }else{
87 this->setWindowFlags(Qt::FramelessWindowHint);
88 int x = (qApp->desktop()->width()-width())/2;
89 int y = (qApp->desktop()->height()-height())/2;
90 move(x, y);
91
92 }
93 this->setVisible(true);
94 int ret = m_pLoop->exec();
95
96 if(parentWidget != Q_NULLPTR)
97 {
98 //解除其它窗口部件操作.
99 foreach (QObject *o, m_object) {
100 o->removeEventFilter(this);
101 }
102 m_object.clear();
103 }
104
105 delete m_pLoop;
106 return ret;
107 }
108
paintEvent(QPaintEvent * e)109 void MessageBox::paintEvent(QPaintEvent *e)
110 {
111 Q_UNUSED(e)
112 QWidget::paintEvent(e);
113 QPainter painter(this);
114
115 painter.fillRect(this->rect(), QColor(251, 251, 251));
116 painter.setPen(Qt::blue);
117 painter.drawText(20, 20, "Message");
118 QPen pen(Qt::blue);
119 pen.setWidthF(2.0);
120 painter.setPen(pen);
121 painter.drawLine(QPoint(20, 25), QPoint(this->width()-20, 25));
122 }
123
eventFilter(QObject * watched,QEvent * event)124 bool MessageBox::eventFilter(QObject *watched, QEvent *event)
125 {
126 //过滤所非消息窗口的鼠标点击和聚集事件，使只能操作当强消息窗口.
127 QInputEvent *pMouse = dynamic_cast<QInputEvent*>(event);
128 QFocusEvent *pFocus = dynamic_cast<QFocusEvent*>(event);
129 if(m_object.contains(watched) && (pMouse|| pFocus))
130 {
131 event->ignore();
132 return true;
133 }
134
135 return QWidget::eventFilter(watched, event);
136 }
137
filterChild(QObject * o)138 void MessageBox::filterChild(QObject *o)
139 {
140 foreach (QObject *child, o->children()) {
141 if( child !=this)
142 {
143 m_object << child;
144 child->installEventFilter(this);
145 filterChild(child);
146 }
147 }
148 }
149
showMessage(QWidget * parent,const QString & text,Button button)150 int MessageBox::showMessage(QWidget *parent, const QString &text, Button button)
151 {
152 MessageBox tip(parent, text, button);
153 return tip.exec();
154 }
155
showDuringMessage(QWidget * parent,const QString & text,int duringSeconds)156 int MessageBox::showDuringMessage(QWidget *parent, const QString &text, int duringSeconds)
157 {
158 MessageBox tip(parent, text, MessageBox::no);
159 QPropertyAnimation pro(&tip, "windowOpacity");
160 pro.setStartValue(0.1);
161 pro.setEndValue(1.0);
162 pro.setDuration(duringSeconds*1000);
163 connect(&pro, &QPropertyAnimation::finished, &tip, [=, &tip](){
164 tip.m_pLoop->exit();;
165 });
166 pro.start();
167 return tip.exec();
168 }
169