Qt翻页控件PagiNation

#include "PagiNation.h" // -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- string nomalQss = R"( QPushButton { color: #333; background: #fdfdfd; border: 1px solid #dadada; border-radius: 3px; font-size: 8pt; } QPushButton:hover { color: white; background: #b4cafc; border: 1px solid #598bf7; border-radius: 3px; font-size: 8pt; font-weight: bold; } QPushButton:pressed { color: white; background: #9fbafa; border: 1px solid #4d83f8; border-radius: 3px; font-size: 8pt; } )"; string checkedQss = R"( QPushButton { color: white; background: #b4cafc; border: 1px solid #598bf7; border-radius: 3px; font-size: 8pt; font-weight: bold; } QPushButton:hover { color: white; background: #b4cafc; border: 1px solid #598bf7; border-radius: 3px; font-size: 8pt; font-weight: bold; } QPushButton:pressed { color: white; background: #9fbafa; border: 1px solid #4d83f8; border-radius: 3px; font-size: 8pt; } )"; Button::Button (QString text, QWidget *parent): QPushButton(text, parent) { QSizePolicy CL(QSizePolicy::Maximum, QSizePolicy::Expanding); setSizePolicy(CL); connect(this, SIGNAL(clicked()), this, SLOT(handleClick())); setStyleSheet(QString::fromStdString(nomalQss)); }; void Button::handleClick () { emit cClick(this); }; void Button::setChecked (bool checked) { if (checked) { setStyleSheet(QString::fromStdString(checkedQss)); } else { setStyleSheet(QString::fromStdString(nomalQss)); } }; // -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PagiNation::PagiNation (QWidget *parent, AlignType align, int buttonCount): QFrame(parent), _align(align), _buttonCount(buttonCount) { _height = 20; setFixedHeight(_height); init(); }; PagiNation::PagiNation (QPoint point, QWidget *parent, AlignType align, int buttonCount): QFrame(parent), _align(align), _buttonCount(buttonCount) { _height = 20; setFixedHeight(_height); move(point); init(); }; PagiNation::PagiNation (QSize size, QWidget *parent, AlignType align, int buttonCount): QFrame(parent), _align(align), _buttonCount(buttonCount) { _height = size.height(); resize(size); setMinimumWidth(size.width()); setFixedHeight(_height); init(); }; PagiNation::PagiNation (QRect rect, QWidget *parent, AlignType align, int buttonCount): QFrame(parent), _align(align), _buttonCount(buttonCount) { _height = rect.height(); move(rect.x(), rect.y()); resize(rect.size()); setMinimumWidth(rect.width()); setFixedHeight(_height); init(); }; // ----------------- 私有方法 --------------------- void PagiNation::init () { QFont font; font.setPointSize(8); if (_buttonCount % 2 != 1 || _buttonCount < 5) _buttonCount = 7; BJ = new QHBoxLayout(this); BJ->setSpacing(0); BJ->setContentsMargins(0, 0, 0, 0); TH_left = new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum); TH_right = new QSpacerItem(0, 0, QSizePolicy::Expanding, QSizePolicy::Minimum); prevFBtn = new QPushButton("<<", this); prevFBtn->setFont(font); prevFBtn->setFixedSize(_height, _height); connect(prevFBtn, SIGNAL(clicked()), this, SLOT(toPrev5())); prevBtn = new QPushButton("<", this); prevBtn->setFont(font); prevBtn->setFixedSize(_height, _height); connect(prevBtn, SIGNAL(clicked()), this, SLOT(toPrev1())); mainBox = new QFrame(this); QSizePolicy CL(QSizePolicy::Maximum, QSizePolicy::Expanding); // 布局策略 BJ_main = new QHBoxLayout(mainBox); BJ_main->setSpacing(4); BJ_main->setContentsMargins(0, 0, 0, 0); mainBox->setSizePolicy(CL); mainBox->setObjectName("mainBox"); mainBox->setStyleSheet("QFrame#mainBox{margin-left: 4px; margin-right: 4px;}"); nextBtn = new QPushButton(">", this); nextBtn->setFont(font); nextBtn->setFixedSize(_height, _height); connect(nextBtn, SIGNAL(clicked()), this, SLOT(toNext1())); nextFBtn = new QPushButton(">>", this); nextFBtn->setFont(font); nextFBtn->setFixedSize(_height, _height); connect(nextFBtn, SIGNAL(clicked()), this, SLOT(toNext5())); BJ->addWidget(prevFBtn); BJ->addSpacing(2); BJ->addWidget(prevBtn); BJ->addWidget(mainBox); BJ->addWidget(nextBtn); BJ->addSpacing(2); BJ->addWidget(nextFBtn); setWidgetAlign(); computePage(); }; /** 计算当前页码展示 */ void PagiNation::computePage () { QList<__PagiNation_DATA> list; // 页码总数 int totalNum = ceil(double(_total) / double(_pageSize)); if (totalNum < _pageNow) _pageNow = totalNum == 0 ? 1 : totalNum; if (totalNum == 0) { __PagiNation_DATA data = {1, 1, true}; list.push_back(data); renderBtn(list); return; } if (totalNum <= _buttonCount) { // 页码总数小于等于按钮数量, 直接返回页码总数条数据 for (int i = 1; i <= totalNum; i ++) { __PagiNation_DATA data = {1, i, _pageNow == i}; list.push_back(data); } renderBtn(list); return; } int midIndex = (_buttonCount - 1) / 2; // 左侧按钮数量(即中间按钮索引) int signLocation = midIndex % 2 == 0 ? midIndex / 2 : (midIndex - 1) / 2; QVector<int> _leftArr(midIndex), _rightArr(midIndex); // 预设左右边按钮集合 for (int i = 1; i <= midIndex; i ++) { _leftArr[i - 1] = i; _rightArr[i - 1] = i + midIndex + 1; } QString position = "center"; // 当前页码所在位置, 左边(左边无需分隔点), 左侧中间按钮位置(左边无需分隔点), 中间(左右都需要分隔点), 右侧中间按钮位置(右边无需分隔点), 右边(右边无需分隔点) int midLabel = _pageNow; // 中间按钮展示的页码数据 if (_pageNow < midIndex + 1) { position = "left"; midLabel = midIndex + 1; } else if (_pageNow == midIndex + 1) { position = "centerLeft"; } else if (_pageNow > totalNum - midIndex) { position = "right"; midLabel = totalNum - midIndex; } else if (_pageNow == totalNum - midIndex) { position = "centerRight"; } QVector<__PagiNation_DATA> leftArr(midIndex), rightArr(midIndex); for (int i = 0; i < midIndex; i ++) { // 给左边按钮集合leftArr赋予真正的输出值 if (position == "left" || position == "centerLeft") { __PagiNation_DATA data = {1, i + 1, _pageNow == i + 1}; leftArr[i] = data; } else { if (i < signLocation) { __PagiNation_DATA data = {1, i + 1, false}; leftArr[i] = data; } else { __PagiNation_DATA data = {1, midLabel - (midIndex - i), false}; leftArr[i] = data; } } // 给右边按钮集合rightArr赋予真正的输出值 if (position == "right" || position == "centerRight") { __PagiNation_DATA data = {1, totalNum - (midIndex - (i + 1)), _pageNow == totalNum - (midIndex - (i + 1))}; rightArr[i] = data; } else { if (i > midIndex - signLocation - 1) { __PagiNation_DATA data = {1, totalNum - (midIndex - (i + 1)), false}; rightArr[i] = data; } else { __PagiNation_DATA data = {1, midLabel + (i + 1), false}; rightArr[i] = data; } } } // 给中间按钮�