Qt有哪些通用方法及类库

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函数名

    //九宫格图片 horzSplit-宫格1/3/7/9宽度  vertSplit-宫格1/3/7/9高度  dstWidth-目标图片宽度  dstHeight-目标图片高度    static QPixmap ninePatch(const QString &picName, int horzSplit, int vertSplit, int dstWidth, int dstHeight);    static QPixmap ninePatch(const QPixmap &pix, int horzSplit, int vertSplit, int dstWidth, int dstHeight);

函数体

QPixmap QUIHelper::ninePatch(const QString &picName, int horzSplit, int vertSplit, int dstWidth, int dstHeight){    QPixmap pix(picName);    return ninePatch(pix, horzSplit, vertSplit, dstWidth, dstHeight);}QPixmap QUIHelper::ninePatch(const QPixmap &pix, int horzSplit, int vertSplit, int dstWidth, int dstHeight){    int pixWidth = pix.width();    int pixHeight = pix.height();    QPixmap pix1 = pix.copy(0, 0, horzSplit, vertSplit);    QPixmap pix2 = pix.copy(horzSplit, 0, pixWidth - horzSplit * 2, vertSplit);    QPixmap pix3 = pix.copy(pixWidth - horzSplit, 0, horzSplit, vertSplit);    QPixmap pix4 = pix.copy(0, vertSplit, horzSplit, pixHeight - vertSplit * 2);    QPixmap pix5 = pix.copy(horzSplit, vertSplit, pixWidth - horzSplit * 2, pixHeight - vertSplit * 2);    QPixmap pix6 = pix.copy(pixWidth - horzSplit, vertSplit, horzSplit, pixHeight - vertSplit * 2);    QPixmap pix7 = pix.copy(0, pixHeight - vertSplit, horzSplit, vertSplit);    QPixmap pix8 = pix.copy(horzSplit, pixHeight - vertSplit, pixWidth - horzSplit * 2, pixWidth - horzSplit * 2);    QPixmap pix9 = pix.copy(pixWidth - horzSplit, pixHeight - vertSplit, horzSplit, vertSplit);    //保持高度拉宽    pix2 = pix2.scaled(dstWidth - horzSplit * 2, vertSplit, Qt::IgnoreAspectRatio);    //保持宽度拉高    pix4 = pix4.scaled(horzSplit, dstHeight - vertSplit * 2, Qt::IgnoreAspectRatio);    //宽高都缩放    pix5 = pix5.scaled(dstWidth - horzSplit * 2, dstHeight - vertSplit * 2, Qt::IgnoreAspectRatio);    //保持宽度拉高    pix6 = pix6.scaled(horzSplit, dstHeight - vertSplit * 2, Qt::IgnoreAspectRatio);    //保持高度拉宽    pix8 = pix8.scaled(dstWidth - horzSplit * 2, vertSplit);    //生成宽高图片并填充透明背景颜色    QPixmap resultImg(dstWidth, dstHeight);    resultImg.fill(Qt::transparent);    QPainter painter;    painter.begin(&resultImg);    if (!resultImg.isNull()) {        painter.drawPixmap(0, 0, pix1);        painter.drawPixmap(horzSplit, 0, pix2);        painter.drawPixmap(dstWidth - horzSplit, 0, pix3);        painter.drawPixmap(0, vertSplit, pix4);        painter.drawPixmap(horzSplit, vertSplit, pix5);        painter.drawPixmap(dstWidth - horzSplit, vertSplit, pix6);        painter.drawPixmap(0, dstHeight - vertSplit, pix7);        painter.drawPixmap(horzSplit, dstHeight - vertSplit, pix8);        painter.drawPixmap(dstWidth - horzSplit, dstHeight - vertSplit, pix9);    }    painter.end();    return resultImg;}

感谢各位的阅读，以上就是"Qt有哪些通用方法及类库"的内容了，经过本文的学习后，相信大家对Qt有哪些通用方法及类库这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是，小编将为大家推送更多相关知识点的文章，欢迎关注！