{"id":459,"date":"2009-08-25T22:06:09","date_gmt":"2009-08-25T14:06:09","guid":{"rendered":"http:\/\/www.darksun190.cn\/blog\/?p=459"},"modified":"2009-08-25T22:06:09","modified_gmt":"2009-08-25T14:06:09","slug":"qt-example-shapedclock","status":"publish","type":"post","link":"http:\/\/darksun190.cn\/blog\/?p=459","title":{"rendered":"qt example &#8211; shapedclock"},"content":{"rendered":"<pre>\u9274\u4e8e\u5df2\u7ecf\u88ab\u6211\u6539\u7684\u9762\u76ee\u5168\u975e\u4e86\uff0c\u6211\u4e5f\u5206\u4e0d\u6e05\u539f\u6765\u662f\u4ec0\u4e48\u6837\u5b50\u7684\u4e86\u3002<\/pre>\n<pre>\u8981\u505a\u5230\u900f\u660e\u6548\u679c\uff0c\u9700\u8981\u8bbe\u7f6e2\u4e2a\u5730\u65b9\uff0c\u4e00\u662f\u80cc\u666f\u8272\uff0c\u4e8c\u662f\u628a\u8868\u76d8\u65e0\u5173\u7684\u533a\u57dfMask\u6389\u3002<\/pre>\n<pre>shapedclock.h<\/pre>\n<pre style=\"padding-left: 30px;\">#ifndef SHAPEDCLOCK_H\n#define SHAPEDCLOCK_H\n\n#include &lt;QWidget&gt;\n\nclass ShapedClock : public QWidget\n{\n    Q_OBJECT\n\npublic:\n    ShapedClock(QWidget *parent = 0);\n    QSize sizeHint() const;\n\nprotected:\n    void mouseMoveEvent(QMouseEvent *event);\n    void mousePressEvent(QMouseEvent *event);\n    void paintEvent(QPaintEvent *event);\n    void resizeEvent(QResizeEvent *event);\n\nprivate:\n    QPoint dragPosition;\n};\n\n#endif<\/pre>\n<pre>shapedclock.cpp<\/pre>\n<pre style=\"padding-left: 30px;\">#include &lt;QtGui&gt;\n\n#include \"shapedclock.h\"\n\nShapedClock::ShapedClock(QWidget *parent)\n    : QWidget(parent, Qt::FramelessWindowHint | Qt::WindowSystemMenuHint | Qt::WindowStaysOnTopHint)\n      \/\/\u7a97\u53e3\u7684\u79cd\u7c7b\uff0cFrameless\u662f\u900f\u660e\u80cc\u666f\u5fc5\u987b, staysOnTop\u662f\u7a97\u53e3\u603b\u5728\u6700\u524d\n{\n    QTimer *timer = new QTimer(this);\n    connect(timer, SIGNAL(timeout()), this, SLOT(update()));\n    timer-&gt;start(100);\n    \/\/\u548c\u539f\u6765\u4e00\u6837\u7684\u8ba1\u65f6\u5668\n\n    move(1100,50);\n    \/\/\u8fd9\u662f\u6211\u81ea\u5df1\u52a0\u7684\u521d\u59cb\u4f4d\u7f6e\n\n    setAttribute( Qt::WA_TranslucentBackground, true);\n    \/\/\u80cc\u666f\u900f\u660e\n\n    QAction *quitAction = new QAction(tr(\"E&amp;xit\"), this);\n    quitAction-&gt;setShortcut(tr(\"Ctrl+Q\"));\n    connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));\n    addAction(quitAction);\n    \/\/\u52a0\u4e00\u4e2aaction\uff0c\u5feb\u6377\u952e\u662fCtrl+Q\uff0c\u5b9e\u73b0\u9000\u51fa\u529f\u80fd\uff0c\u6211\u5f88\u5947\u602a\u7684\u662f\u8bbe\u5b9a\u5feb\u6377\u952e\u4ed6\u7684\u7c7b\u578b\u662fQString\uff0c\u96be\u9053\u53ef\u4ee5\u81ea\u52a8\u8bc6\u522b\uff1f\n\n    setContextMenuPolicy(Qt::ActionsContextMenu);\n    setToolTip(tr(\"Drag the clock with the left mouse button.\\n\"\n                  \"Use the right mouse button to open a context menu.\"));\n    setWindowTitle(tr(\"Shaped Analog Clock\"));\n    \/\/\u9f20\u6807\u60ac\u7f6e\u7684\u6587\u672c\u63d0\u793a\u548c\u6807\u9898\n}\n\nvoid ShapedClock::mousePressEvent(QMouseEvent *event)\n{\n    if (event-&gt;button() == Qt::LeftButton) {\n        dragPosition = event-&gt;globalPos() - frameGeometry().topLeft();\n        event-&gt;accept();\n    }\n    \/\/\u5f53\u9f20\u6807\u70b9\u4e0b\u7684\u65f6\u5019\uff0c\u5f97\u5230\u9f20\u6807\u76f8\u5bf9\u7a97\u53e3\u5de6\u4e0a\u89d2\u70b9\u7684\u76f8\u5bf9\u5750\u6807\n}\n\nvoid ShapedClock::mouseMoveEvent(QMouseEvent *event)\n{\n    if (event-&gt;buttons() &amp; Qt::LeftButton) {\n        move(event-&gt;globalPos() - dragPosition);\n        event-&gt;accept();\n    }\n    \/\/\u5f53\u9f20\u6807\u79fb\u52a8\u7684\u65f6\u5019\uff0c\u7528\u5f53\u65f6\u9f20\u6807\u5168\u5c40\u4f4d\u7f6e\u51cf\u53bb\u4e0a\u9762\u7684\u76f8\u5bf9\u5750\u6807\u5f97\u5230\u73b0\u5728\u7684\u89d2\u70b9\u5750\u6807\uff0c\u5e76\u79fb\u52a8\n}\n\nvoid ShapedClock::paintEvent(QPaintEvent *)\n{\n    \/* \u540e\u9762\u7684\u5c31\u548c\u6628\u5929\u7c7b\u4f3c\u4e86*\/\n\n    static const QPoint hourHand[3] = {\n        QPoint(5, 8),\n        QPoint(-5, 8),\n        QPoint(0, -40)\n    };\n    static const QPoint minuteHand[3] = {\n        QPoint(5, 8),\n        QPoint(-5, 8),\n        QPoint(0, -70)\n    };\n    static const QPoint secondHand[4] = {\n\tQPoint(1, 8),\n\tQPoint(-1, 8),\n\tQPoint(-1, -90),\n\tQPoint(1,-90)\n    };\n    static const QPoint background[4] = {\n\tQPoint( -100, -100),\n\tQPoint( -100, 100),\n\tQPoint( 100, 100),\n\tQPoint( 100, -100),\n    };\n    \/\/\u591a\u4e86\u4e00\u4e2a\u753b\u80cc\u666f\n\n    QColor hourColor(255, 0, 255);\n    QColor minuteColor(0, 255, 255, 191);\n    QColor secondColor(255, 255, 0);\n    QColor BGColor(255, 255, 255, 5);    \/\/\u8fd9\u662f\u80cc\u666f\u8272\n\n    int side = qMin(width(), height());\n    QTime time = QTime::currentTime();\n\n    QPainter painter(this);\n    painter.setRenderHint(QPainter::Antialiasing);\n    painter.translate(width() \/ 2, height() \/ 2);\n    painter.scale(side \/ 200.0, side \/ 200.0);\n\n    painter.setPen(Qt::NoPen);\n    painter.setBrush(BGColor);\n    painter.save();\n    painter.drawConvexPolygon(background,4);\n    painter.restore();\n    \/\/\u753b\u80cc\u666f\n\n    painter.setPen(Qt::NoPen);\n    painter.setBrush(hourColor);\n\n    painter.save();\n    painter.rotate(30.0 * ((time.hour() + time.minute() \/ 60.0)));\n    painter.drawConvexPolygon(hourHand, 3);\n    painter.restore();\n\n    painter.setPen(hourColor);\n\n    for (int i = 0; i &lt; 12; ++i) {\n        painter.drawLine(88, 0, 96, 0);\n        painter.rotate(30.0);\n    }\n\n    painter.setPen(Qt::NoPen);\n    painter.setBrush(minuteColor);\n\n    painter.save();\n    painter.rotate(6.0 * (time.minute() + time.second() \/ 60.0));\n    painter.drawConvexPolygon(minuteHand, 3);\n    painter.restore();\n\n    painter.setPen(minuteColor);\n\n    for (int j = 0; j &lt; 60; ++j) {\n        if ((j % 5) != 0)\n            painter.drawLine(92, 0, 96, 0);\n        painter.rotate(6.0);\n    }\n    QPainter painter2(this);\n    painter2.setRenderHint(QPainter::Antialiasing);\n    painter2.translate(width() \/ 4, height() \/ 8 * 5);\n    painter2.scale(side \/ 600.0, side \/ 600.0);\n    painter2.setPen(Qt::NoPen);\n    painter2.setBrush(secondColor);\n    painter2.save();\n    if(time.second()&lt;30)\n\tpainter2.rotate(6.0 * (time.second() + time.msec()\/1000.0 ));\n    else if(time.second()==30 &amp;&amp; time.msec()&lt;550)\n\tpainter2.rotate(180 - 36.0 * time.msec()\/100.0);\n\n    painter2.drawConvexPolygon(secondHand,4);\n    painter2.restore();\n\n    painter2.setPen(secondColor);\n    painter2.rotate(270);\n    for (int j = 0; j &lt; 30; ++j) {\n\tpainter2.drawLine(92, 0, 96, 0);\n        painter2.rotate(6.0);\n    }\n\n    QPainter painter3(this);\n    painter3.setRenderHint(QPainter::Antialiasing);\n    painter3.translate(width() \/ 4 * 3, height() \/ 8 * 3);\n    painter3.scale(side \/ 600.0, side \/ 600.0);\n    painter3.setPen(Qt::NoPen);\n    painter3.setBrush(secondColor);\n    painter3.save();\n    if(time.second()&gt;30)\n\tpainter3.rotate(360 - (6.0 * (time.second()-30 + time.msec()\/1000.0 )));\n    else if (time.second()==0 &amp;&amp; time.msec()&lt;550)\n\tpainter3.rotate(180 + 36.0 * time.msec()\/100.0);\n    painter3.drawConvexPolygon(secondHand,4);\n    painter3.restore();\n    painter3.setPen(secondColor);\n    painter3.rotate(90);\n    for (int j = 0; j &lt; 30; ++j) {\n\tpainter3.drawLine(92, 0, 96, 0);\n        painter3.rotate(6.0);\n    }\n    \/\/\u8fd9\u4e9b\u90fd\u548c\u6628\u5929\u4e00\u6837\u4e86\n\n}\n\nvoid ShapedClock::resizeEvent(QResizeEvent * \/* event *\/)\n{\n    int side = qMin(width(), height());\n    QRegion maskedRegion(width() \/ 2 - side \/ 2, height() \/ 2 - side \/ 2, side,\n                         side, QRegion::Ellipse);\n    setMask(maskedRegion);\n    \/\/\u5c06\u8868\u76d8\u4ee5\u5916\u7684Mask\n}\n\nQSize ShapedClock::sizeHint() const\n{\n    return QSize(200, 200);\n    \/\/\u9ed8\u8ba4\u5c3a\u5bf8\n}<\/pre>\n<pre>main.cpp<\/pre>\n<pre style=\"padding-left: 30px;\">#include &lt;QApplication&gt;\n\n#include \"shapedclock.h\"\n\nint main(int argc, char *argv[])\n{\n    QApplication app(argc, argv);\n    ShapedClock clock;\n    clock.show();\n    return app.exec();\n}<\/pre>\n<pre>\u6548\u679c\u56fe<\/pre>\n<pre><a href=\"http:\/\/www.darksun190.cn\/blog\/wp-content\/uploads\/2009\/08\/shapedclock.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-460\" title=\"shapedclock\" src=\"http:\/\/www.darksun190.cn\/blog\/wp-content\/uploads\/2009\/08\/shapedclock.jpg\" alt=\"shapedclock\" width=\"550\" height=\"247\" \/><\/a><\/pre>\n<pre><a href=\"http:\/\/www.darksun190.cn\/blog\/wp-content\/uploads\/2009\/08\/shapedclock.exe\">\u53ef\u6267\u884c\u6587\u4ef6<\/a>\uff0c\u8bf4\u660e\uff0c\u8fd9\u6b21\u6211\u6ca1\u6709\u7f16\u8bd1\u9759\u6001\u5e93\u7684Qt\uff0c\u6240\u4ee5\u8fd9\u4e2a\u53ea\u6709\u88c5\u4e86Qt\u7684\u673a\u5668\u624d\u80fd\u7528-_-b\uff0c\u9759\u6001\u5e93\u7684\u4f30\u8ba1\u898110\u51e0M\u5927\u5c0f\u5427\u3002<\/pre>\n<pre>\u5c31\u6628\u5929\u5199\u7684\u5341\u51e0\u884c\u5c31\u67092\u4e2a\u5c0fBUG\uff0c\u54ce-_-b<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u9274\u4e8e\u5df2\u7ecf\u88ab\u6211\u6539\u7684\u9762\u76ee\u5168\u975e\u4e86\uff0c\u6211\u4e5f\u5206\u4e0d\u6e05\u539f\u6765\u662f\u4ec0\u4e48\u6837\u5b50\u7684\u4e86\u3002 \u8981\u505a\u5230\u900f\u660e\u6548\u679c\uff0c\u9700\u8981\u8bbe\u7f6e2\u4e2a\u5730\u65b9\uff0c\u4e00\u662f\u80cc\u666f\u8272\uff0c\u4e8c\u662f &hellip; <a href=\"http:\/\/darksun190.cn\/blog\/?p=459\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cqt example &#8211; shapedclock\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-459","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=459"}],"version-history":[{"count":0,"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=\/wp\/v2\/posts\/459\/revisions"}],"wp:attachment":[{"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=459"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/darksun190.cn\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}