Qt编写自定义控件33-图片切换动画

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Qt编写自定义控件33-图片切换动画

feiyangqingyun 2019-08-06 11:19:04 浏览123
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一、前言

在很多看图软件中,切换图片的时候可以带上动画过渡或者切换效果,显得更人性化,其实主要还是炫一些,比如百叶窗、透明度变化、左下角飞入等,无论多少种效果,核心都是围绕QPainter来进行,将各种动画效果对应的图片的区域动态计算并绘制出来,配合以QPropertyAnimation动画属性产生线性插值,比如渐入飞入时候,可以中间快速两端慢速。目前动画类型有9种,后期还会不断增加。

  • 1:图像1渐渐变淡,图像2渐渐显现
  • 2:百叶窗效果
  • 3:图像从右向左翻转
  • 4:从外到内水平分割
  • 5:图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
  • 6:图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
  • 7:图像1从下至上退出可视区域,同时图像2从下至上进入可视区域
  • 8:图像1从上至下退出可视区域,同时图像2从上至下进入可视区域
  • 9:图像1不动,同时图像2从右下到左上

二、实现的功能

  • 1:支持多种等待样式风格 圆弧状风格 旋转圆风格 三角圆弧 线条风格 圆环风格
  • 2:可设置范围值和当前值
  • 3:可设置前景色背景色
  • 4:可设置顺时针逆时针旋转
  • 5:支持任意大小缩放
  • 6:支持设置旋转速度间隔

三、效果图

imageanimation

四、头文件代码

#ifndef IMAGEANIMATION_H
#define IMAGEANIMATION_H

/**
 * 图片切换动画控件 作者:赵彦博(QQ:408815041 zyb920@hotmail.com) 2019-6-10
 * 1:可设置动画类型,默认9种,后期会增加更多
 * FadeEffect = 0,             //图像1渐渐变淡,图像2渐渐显现
 * BlindsEffect = 1,           //百叶窗效果
 * FlipRightToLeft = 2,        //图像从右向左翻转
 * OutsideToInside = 3,        //从外到内水平分割
 * MoveLeftToRightEffect = 4,  //图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
 * MoveRightToLeftEffect = 5,  //图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
 * MoveBottomToUpEffect = 6,   //图像1从下至上退出可视区域,同时图像2从下至上进入可视区域
 * MoveUpToBottomEffect = 7,   //图像1从上至下退出可视区域,同时图像2从上至下进入可视区域
 * MoveBottomToLeftUpEffect = 8//图像1不动,同时图像2从右下到左上
 * 2:可设置两张图片的路径名称或者图片
 * 3:可设置动画因子
 */

#include <QWidget>

class QPropertyAnimation;

#ifdef quc
#if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
#include <QtDesigner/QDesignerExportWidget>
#else
#include <QtUiPlugin/QDesignerExportWidget>
#endif

class QDESIGNER_WIDGET_EXPORT ImageAnimation : public QWidget
#else
class ImageAnimation : public QWidget
#endif

{
    Q_OBJECT
    Q_ENUMS(AnimationType)
    Q_PROPERTY(float factor READ getFactor WRITE setFactor)
    Q_PROPERTY(QString imageName1 READ getImageName1 WRITE setImageName1)
    Q_PROPERTY(QString imageName2 READ getImageName2 WRITE setImageName2)
    Q_PROPERTY(QPixmap pixmap1 READ getPixmap1 WRITE setPixmap1)
    Q_PROPERTY(QPixmap pixmap2 READ getPixmap2 WRITE setPixmap2)
    Q_PROPERTY(AnimationType animationType READ getAnimationType WRITE setAnimationType)

public:
    enum AnimationType {
        FadeEffect = 0,             //图像1渐渐变淡,图像2渐渐显现
        BlindsEffect = 1,           //百叶窗效果
        FlipRightToLeft = 2,        //图像从右向左翻转
        OutsideToInside = 3,        //从外到内水平分割
        MoveLeftToRightEffect = 4,  //图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
        MoveRightToLeftEffect = 5,  //图像1从左至右退出可视区域,同时图像2从左至右进入可视区域
        MoveBottomToUpEffect = 6,   //图像1从下至上退出可视区域,同时图像2从下至上进入可视区域
        MoveUpToBottomEffect = 7,   //图像1从上至下退出可视区域,同时图像2从上至下进入可视区域
        MoveBottomToLeftUpEffect = 8//图像1不动,同时图像2从右下到左上
    };

    explicit ImageAnimation(QWidget *parent = 0);
    ~ImageAnimation();

protected:
    void paintEvent(QPaintEvent *);
    void fadeEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void blindsEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void flipRightToLeft(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void outsideToInside(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void moveLeftToRightEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void moveRightToLeftEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void moveBottomToUpEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void moveUpToBottomEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);
    void moveBottomToLeftUpEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2);

private:
    float factor;                   //动画因子(0 - 1.0之间变化)
    QString imageName1;             //图片1路径名称
    QString imageName2;             //图片2路径名称
    QPixmap pixmap1;                //图片1
    QPixmap pixmap2;                //图片2
    AnimationType animationType;    //动画效果类型

    QPropertyAnimation *animation;  //动画属性

public:
    float getFactor()               const;
    QString getImageName1()         const;
    QString getImageName2()         const;
    QPixmap getPixmap1()            const;
    QPixmap getPixmap2()            const;
    AnimationType getAnimationType()const;

    QSize sizeHint()                const;
    QSize minimumSizeHint()         const;

public Q_SLOTS:
    //设置动画因子
    void setFactor(float factor);

    //设置图片1+图片2路径名称
    void setImageName1(const QString &imageName1);
    void setImageName2(const QString &imageName2);

    //设置图片1+图片2
    void setPixmap1(const QPixmap &pixmap1);
    void setPixmap2(const QPixmap &pixmap2);

    //设置动画类型
    void setAnimationType(const AnimationType &animationType);

    //启动+停止动画
    void start();
    void stop();
};

#endif // IMAGEANIMATION_H

五、核心代码

void ImageAnimation::paintEvent(QPaintEvent *)
{
    if (pixmap1.isNull() || pixmap2.isNull()) {
        return;
    }

    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing, true);

    switch (animationType) {
    case 0:
        fadeEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 1:
        blindsEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 2:
        flipRightToLeft(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 3:
        outsideToInside(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 4:
        moveLeftToRightEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 5:
        moveRightToLeftEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 6:
        moveBottomToUpEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 7:
        moveUpToBottomEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    case 8:
        moveBottomToLeftUpEffect(&painter, geometry(), factor, pixmap1, pixmap2);
        break;
    default:
        break;
    }
}

void ImageAnimation::fadeEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2)
{
    int w = rect.width();
    int h = rect.height();
    int alpha = 255 * (1.0f - factor);

    QPixmap alphaPixmap(pixmap1.size());
    alphaPixmap.fill(Qt::transparent);

    QPainter p1(&alphaPixmap);
    p1.setCompositionMode(QPainter::CompositionMode_Source);
    p1.drawPixmap(0, 0, pixmap1);
    p1.setCompositionMode(QPainter::CompositionMode_DestinationIn);
    p1.fillRect(alphaPixmap.rect(), QColor(0, 0, 0, alpha));
    p1.end();

    int x = (w - pixmap1.width()) / 2;
    int y = (h - pixmap1.height()) / 2;
    painter->drawPixmap(x, y, alphaPixmap);

    alpha = 255 * (factor);
    alphaPixmap.fill(Qt::transparent);
    QPainter p2(&alphaPixmap);
    p2.setCompositionMode(QPainter::CompositionMode_Source);
    p2.drawPixmap(0, 0, pixmap2);
    p2.setCompositionMode(QPainter::CompositionMode_DestinationIn);
    p2.fillRect(alphaPixmap.rect(), QColor(0, 0, 0, alpha));
    p2.end();

    painter->drawPixmap(x, y, alphaPixmap);
}

void ImageAnimation::blindsEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2)
{
    int i, n, w, h, x1, y1, x2, y2, dh, ddh;

    w = rect.width();
    h = rect.height();
    x1 = (w - pixmap1.width()) / 2;
    y1 = (h - pixmap1.height()) / 2;
    x2 = (w - pixmap2.width()) / 2;
    y2 = (h - pixmap2.height()) / 2;

    painter->drawPixmap(x1, y1, pixmap1);

    n = 10;
    dh = pixmap2.height() / n;
    ddh = factor * dh;
    if (ddh < 1) {
        ddh = 1;
    }

    for(i = 0; i < n; i++) {
        painter->drawPixmap(x2, y2 + i * dh, pixmap2, 0, i * dh, pixmap2.width(), ddh);
    }
}

void ImageAnimation::flipRightToLeft(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2)
{
    int x1, y1, x2, y2, w, h;
    float rot;
    QTransform trans;

    w = rect.width();
    h = rect.height();
    x1 = (w - pixmap1.width()) / 2;
    y1 = (h - pixmap1.height()) / 2;
    x2 = (w - pixmap2.width()) / 2;
    y2 = (h - pixmap2.height()) / 2;

    rot = factor * 90.0f;
    trans.translate(w * (1 - factor), h / 2);
    trans.rotate(rot, Qt::YAxis);
    trans.translate(-w, -h / 2);

    painter->setTransform(trans);
    painter->drawPixmap(x1, y1, pixmap1);
    painter->resetTransform();

    trans.reset();
    rot = 90 * (factor - 1);
    trans.translate(w * (1 - factor), h / 2);
    trans.rotate(rot, Qt::YAxis);
    trans.translate(0, -h / 2);

    painter->setTransform(trans);
    painter->drawPixmap(x2, y2, pixmap2);
    painter->resetTransform();
}

void ImageAnimation::outsideToInside(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2)
{
    int   w, h, x1, y1, x2, y2, x3, y3, dh, ddh;

    w = rect.width();
    h = rect.height();
    x1 = (w - pixmap1.width()) / 2;
    y1 = (h - pixmap1.height()) / 2;
    painter->drawPixmap(x1, y1, pixmap1);

    dh = pixmap2.height() / 2;
    ddh = factor * dh;
    if (ddh < 1) {
        ddh = 1;
    }

    x2 = (w - pixmap2.width()) / 2;
    y2 = (h - pixmap2.height()) / 2;
    painter->drawPixmap(x2, y2, pixmap2, 0, 0, pixmap2.width(), ddh);

    x3 = (w - pixmap2.width()) / 2;
    y3 =  dh * (1.0f - factor) + h / 2;
    if(y3 != h / 2) {
        y3 += 1;
    }

    painter->drawPixmap(x3, y3, pixmap2, 0, pixmap2.height() - ddh, pixmap2.width(), ddh);
}

void ImageAnimation::moveLeftToRightEffect(QPainter *painter, const QRect &rect, float factor, const QPixmap &pixmap1, const QPixmap &pixmap2)
{
    int x, y, w, h, x1, y1, x2, y2;

    w = rect.width();
    h = rect.height();
    x1 = (w - pixmap1.width()) / 2;
    y1 = (h - pixmap1.height()) / 2;
    x2 = (w - pixmap2.width()) / 2;
    y2 = (h - pixmap2.height()) / 2;

    x = x1 + w * factor;
    y = y1;
    painter->drawPixmap(x, y, pixmap1);

    x = x2 + w * (factor - 1);
    y = y2;
    painter->drawPixmap(x, y, pixmap2);
}

六、控件介绍

  1. 超过149个精美控件,涵盖了各种仪表盘、进度条、进度球、指南针、曲线图、标尺、温度计、导航条、导航栏,flatui、高亮按钮、滑动选择器、农历等。远超qwt集成的控件数量。
  2. 每个类都可以独立成一个单独的控件,零耦合,每个控件一个头文件和一个实现文件,不依赖其他文件,方便单个控件以源码形式集成到项目中,较少代码量。qwt的控件类环环相扣,高度耦合,想要使用其中一个控件,必须包含所有的代码。
  3. 全部纯Qt编写,QWidget+QPainter绘制,支持Qt4.6到Qt5.12的任何Qt版本,支持mingw、msvc、gcc等编译器,支持任意操作系统比如windows+linux+mac+嵌入式linux等,不乱码,可直接集成到Qt Creator中,和自带的控件一样使用,大部分效果只要设置几个属性即可,极为方便。
  4. 每个控件都有一个对应的单独的包含该控件源码的DEMO,方便参考使用。同时还提供一个所有控件使用的集成的DEMO。
  5. 每个控件的源代码都有详细中文注释,都按照统一设计规范编写,方便学习自定义控件的编写。
  6. 每个控件默认配色和demo对应的配色都非常精美。
  7. 超过130个可见控件,6个不可见控件。
  8. 部分控件提供多种样式风格选择,多种指示器样式选择。
  9. 所有控件自适应窗体拉伸变化。
  10. 集成自定义控件属性设计器,支持拖曳设计,所见即所得,支持导入导出xml格式。
  11. 自带activex控件demo,所有控件可以直接运行在ie浏览器中。
  12. 集成fontawesome图形字体+阿里巴巴iconfont收藏的几百个图形字体,享受图形字体带来的乐趣。
  13. 所有控件最后生成一个dll动态库文件,可以直接集成到qtcreator中拖曳设计使用。
  14. 目前已经有qml版本,后期会考虑出pyqt版本,如果用户需求量很大的话。

七、SDK下载

  • SDK下载链接:https://pan.baidu.com/s/1A5Gd77kExm8Co5ckT51vvQ 提取码:877p
  • 下载链接中包含了各个版本的动态库文件,所有控件的头文件,使用demo,自定义控件+属性设计器。
  • 自定义控件插件开放动态库dll使用(永久免费),无任何后门和限制,请放心使用。
  • 目前已提供26个版本的dll,其中包括了qt5.12.3 msvc2017 32+64 mingw 32+64 的。
  • 不定期增加控件和完善控件,不定期更新SDK,欢迎各位提出建议,谢谢!
  • widget版本(QQ:517216493)qml版本(QQ:373955953)三峰驼(QQ:278969898)。
  • 涛哥的知乎专栏 Qt进阶之路 https://zhuanlan.zhihu.com/TaoQt
  • 欢迎关注微信公众号【高效程序员】,C++/Python、学习方法、写作技巧、热门技术、职场发展等内容,干货多多,福利多多!

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