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Qt编写自定义控件27-颜色按钮面板 [复制链接]

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离线liudianwu
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图酷模式  只看楼主 倒序阅读 楼主  发表于: 2019-07-14

一、前言
颜色按钮面板主要用在提供一个颜色按钮面板，用户单击某个按钮，然后拿到对应的颜色值，用户可以预先设定常用的颜色集合，传入到控件中，自动生成面板颜色集合按钮，每当滑过按钮的时候，按钮边缘高亮提示当前所在颜色的按钮，当选中某个按钮时，右侧颜色条显示当前选中的颜色，此控件功能极其简单，直接采用动态生成按钮的方式，设置按钮的样式表来设置对应的颜色和高亮边框等，单击按钮发出颜色改变信号即可，对外提供该信号就行，非常适合初学者学习。

二、实现的功能
* 1:可设置颜色集合
* 2:可设置按钮圆角角度
* 3:可设置列数
* 4:可设置按钮边框宽度和边框颜色

三、效果图



四、头文件代码
复制代码
  1. #ifndef COLORPANELBTN_H
  2. #define COLORPANELBTN_H
  4. /**
  5. * 颜色按钮面板 作者:feiyangqingyun(QQ:517216493) 2017-11-17
  6. * 1:可设置颜色集合
  7. * 2:可设置按钮圆角角度
  8. * 3:可设置列数
  9. * 4:可设置按钮边框宽度和边框颜色
  10. */
  12. #include <QWidget>
  14. class QGridLayout;
  15. class QPushButton;
  17. #ifdef quc
  18. #if (QT_VERSION < QT_VERSION_CHECK(5,7,0))
  19. #include <QtDesigner/QDesignerExportWidget>
  20. #else
  21. #include <QtUiPlugin/QDesignerExportWidget>
  22. #endif
  24. class QDESIGNER_WIDGET_EXPORT ColorPanelBtn : public QWidget
  25. #else
  26. class ColorPanelBtn : public QWidget
  27. #endif
  29. {
  30.     Q_OBJECT
  31.     Q_PROPERTY(int space READ getSpace WRITE setSpace)
  32.     Q_PROPERTY(int columnCount READ getColumnCount WRITE setColumnCount)
  33.     Q_PROPERTY(int borderRadius READ getBorderRadius WRITE setBorderRadius)
  34.     Q_PROPERTY(int borderWidth READ getBorderWidth WRITE setBorderWidth)
  35.     Q_PROPERTY(QColor borderColor READ getBorderColor WRITE setBorderColor)
  37. public:
  38.     explicit ColorPanelBtn(QWidget *parent = 0);
  40. private:
  41.     QGridLayout *gridLayout;
  42.     QList<QPushButton *> btns;
  43.     QStringList colors;
  45.     int space;                  //按钮之间的间隔
  46.     int columnCount;            //按钮列数
  47.     int borderRadius;           //边框圆角
  48.     int borderWidth;            //边框宽度
  49.     QColor borderColor;         //边框颜色
  51. private slots:
  52.     void initStyle();
  53.     void initBtn();
  54.     void btnClicked();
  56. public:
  57.     QStringList getColors()     const;
  59.     int getSpace()              const;
  60.     int getColumnCount()        const;
  61.     int getBorderRadius()       const;
  62.     int getBorderWidth()        const;
  63.     QColor getBorderColor()     const;
  65.     QSize sizeHint()            const;
  66.     QSize minimumSizeHint()     const;
  68. public Q_SLOTS:
  69.     //设置颜色集合
  70.     void setColors(const QStringList &colors);
  72.     //设置按钮间隔
  73.     void setSpace(int space);
  75.     //设置列数
  76.     void setColumnCount(int columnCount);
  78.     //设置圆角角度
  79.     void setBorderRadius(int borderRadius);
  81.     //设置边框宽度
  82.     void setBorderWidth(int borderWidth);
  84.     //设置边框颜色
  85.     void setBorderColor(const QColor &borderColor);
  87. Q_SIGNALS:
  88.     void colorChanged(const QColor &color);
  90. };
  92. #endif // COLORPANELBTN_H

五、完整代码
复制代码
  1. #pragma execution_character_set("utf-8")
  3. #include "colorpanelbtn.h"
  4. #include "qlayout.h"
  5. #include "qpushbutton.h"
  6. #include "qdebug.h"
  8. ColorPanelBtn::ColorPanelBtn(QWidget *parent) : QWidget(parent)
  9. {
  10.     colors << "#FEFEFE" << "#EEEEEF" << "#DCDDDD" << "#C9CACA" << "#B6B6B7" << "#A1A1A1" << "#8B8B8C" << "#757475" << "#5F5D5D" << "#474443" << "#303030";
  11.     colors << "#00A2E9" << "#009B4C" << "#FFF000" << "#E62129" << "#E40082" << "#B04B87" << "#F08519" << "#F4B3B3" << "#897870" << "#D2CDE6" << "#A79CCB";
  12.     colors << "#758FC8" << "#7C6FB0" << "#9288B1" << "#566892" << "#5E5872" << "#7789A4" << "#008FD7" << "#A0D9F6" << "#B8CEDA" << "#98AAB4" << "#75838A";
  13.     colors << "#50585D" << "#5B7877" << "#4B8D7F" << "#769C9B" << "#5BA997" << "#5FA776" << "#62C3D0" << "#56AAB7" << "#B9CCBC" << "#D5EAD8" << "#A6D4AE";
  14.     colors << "#99A99C" << "#9AA780" << "#BCC774" << "#BBC99A" << "#ACCE22" << "#D9E483" << "#5F5C50" << "#8B8979" << "#B6B49E" << "#B6B281" << "#DED572";
  15.     colors << "#FFF582" << "#FFF9B1" << "#FFFCDB" << "#B39B77" << "#D59961" << "#DAB96B" << "#EF8641" << "#F6AE45" << "#F5B06E" << "#FDD100" << "#FBD7A3";
  16.     colors << "#89765B" << "#AC6249" << "#D0753B" << "#EF8762" << "#F5B193" << "#FADAC9" << "#AF8283" << "#CF7771" << "#FF696B" << "#CF788A" << "#E61D4C";
  17.     colors << "#EF8781" << "#E95A6F" << "#D49D9E" << "#876474" << "#AC6484" << "#F4B5D0" << "#D49EB6" << "#B39FA8" << "#D8C0CB" << "#B3719D" << "#CA5599";
  18.     colors << "#CD81B3" << "#B593B3" << "#D0A9CD" << "#745E73" << "#977B95" << "#A878B1" << "#A72185" << "#934787" << "#804E9A" << "#7B5882" << "#714588";
  20.     space = 2;
  21.     columnCount = 11;
  22.     borderRadius = 0;
  23.     borderWidth = 2;
  24.     borderColor = QColor("#C0392B");
  26.     gridLayout = new QGridLayout;
  27.     gridLayout->setSpacing(space);
  28.     gridLayout->setMargin(0);
  29.     this->setLayout(gridLayout);
  30.     this->initStyle();
  31.     this->initBtn();    
  32. }
  34. void ColorPanelBtn::initStyle()
  35. {
  36.     QString qss = QString("QPushButton{border:none;border-radius:%1px;}"
  37.                           "QPushButton:hover{border:%2px solid %3;}")
  38.                   .arg(borderRadius).arg(borderWidth).arg(borderColor.name());
  39.     this->setStyleSheet(qss);
  40. }
  42. void ColorPanelBtn::initBtn()
  43. {
  44.     qDeleteAll(btns);
  45.     btns.clear();
  47.     int count = colors.count();
  48.     int row = 0;
  49.     int column = 0;
  50.     int index = 0;
  51.     for (int i = 0; i < count; i++) {
  52.         QPushButton *btn = new QPushButton;
  53.         connect(btn, SIGNAL(pressed()), this, SLOT(btnClicked()));
  54.         btn->setObjectName("btn" + colors.at(i));
  55.         btn->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
  56.         btn->setStyleSheet(QString("QPushButton{background:%1;}").arg(colors.at(i)));
  58.         gridLayout->addWidget(btn, row, column);
  59.         column++;
  60.         index++;
  62.         if (index % columnCount == 0) {
  63.             row++;
  64.             column = 0;
  65.         }
  67.         btns.append(btn);
  68.     }
  69. }
  71. void ColorPanelBtn::btnClicked()
  72. {
  73.     QPushButton *btn = (QPushButton *)sender();
  74.     QString objName = btn->objectName();
  75.     emit colorChanged(QColor(objName.right(7)));
  76. }
  78. QStringList ColorPanelBtn::getColors() const
  79. {
  80.     return this->colors;
  81. }
  83. int ColorPanelBtn::getSpace() const
  84. {
  85.     return this->space;
  86. }
  88. int ColorPanelBtn::getColumnCount() const
  89. {
  90.     return this->columnCount;
  91. }
  93. int ColorPanelBtn::getBorderRadius() const
  94. {
  95.     return this->borderRadius;
  96. }
  98. int ColorPanelBtn::getBorderWidth() const
  99. {
  100.     return this->borderWidth;
  101. }
  103. QColor ColorPanelBtn::getBorderColor() const
  104. {
  105.     return this->borderColor;
  106. }
  108. QSize ColorPanelBtn::sizeHint() const
  109. {
  110.     return QSize(400, 300);
  111. }
  113. QSize ColorPanelBtn::minimumSizeHint() const
  114. {
  115.     return QSize(40, 30);
  116. }
  118. void ColorPanelBtn::setColors(const QStringList &colors)
  119. {
  120.     if (this->colors != colors) {
  121.         this->colors = colors;
  122.         this->initBtn();
  123.     }
  124. }
  126. void ColorPanelBtn::setSpace(int space)
  127. {
  128.     if (this->space != space) {
  129.         this->space = space;
  130.         this->gridLayout->setSpacing(space);
  131.     }
  132. }
  134. void ColorPanelBtn::setColumnCount(int columnCount)
  135. {
  136.     if (this->columnCount != columnCount) {
  137.         this->columnCount = columnCount;
  138.         this->initBtn();
  139.     }
  140. }
  142. void ColorPanelBtn::setBorderRadius(int borderRadius)
  143. {
  144.     if (this->borderRadius != borderRadius) {
  145.         this->borderRadius = borderRadius;
  146.         this->initStyle();
  147.     }
  148. }
  150. void ColorPanelBtn::setBorderWidth(int borderWidth)
  151. {
  152.     if (this->borderWidth != borderWidth) {
  153.         this->borderWidth = borderWidth;
  154.         this->initStyle();
  155.     }
  156. }
  158. void ColorPanelBtn::setBorderColor(const QColor &borderColor)
  159. {
  160.     if (this->borderColor != borderColor) {
  161.         this->borderColor = borderColor;
  162.         this->initStyle();
  163.     }
  164. }
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