87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
#include "mylabel.h"
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#include <QPalette>
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#include <QFont>
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#include <QFontMetrics>
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#include <QPainter>
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MyLabel::MyLabel(const QString& text, QWidget* parent /*= nullptr*/, QColor color /*= QColor(0xCC, 0xCC, 0xCC)*/) :
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QLabel(parent),
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m_text(text)
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{
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QPalette palette = this->palette();
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palette.setColor(QPalette::WindowText, color);
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this->setPalette(palette);
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this->setAlignment(Qt::AlignCenter);
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this->setScaledContents(true);
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this->setText(text);
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}
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MyLabel::MyLabel(QWidget* parent) :
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QLabel(parent)
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{
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}
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MyLabel::~MyLabel()
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{}
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void MyLabel::setFontColor(QColor color)
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{
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QPalette palette = this->palette();
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palette.setColor(QPalette::WindowText, color);
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this->setPalette(palette);
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}
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void MyLabel::setFontSize(int size)
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{
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QFont font = this->font();
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font.setPixelSize(size);
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// 默认为大字体粗体显示
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if (size > 20)
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font.setBold(true);
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this->setFont(font);
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}
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void MyLabel::setFontWordWrap(bool on)
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{
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m_bWordWrap = on;
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setWordWrap(on);
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if (on) {
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m_width = this->width();
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m_height = this->height();
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m_rect = geometry();
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}
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}
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void MyLabel::paintEvent(QPaintEvent *event)
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{
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QFontMetrics fontMetrics(this->font());
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int fontSize = fontMetrics.width(m_text);
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if (m_bWordWrap && m_width > 0) {
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// resize(m_width, m_height);
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// setGeometry(m_rect);
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// 恢复控件宽度，如果不固定宽度则换行位置不好控制
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this->setFixedWidth(m_width);
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}
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if (fontSize > this->width()) {
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if (m_bWordWrap) {
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// 调整控件大小
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adjustSize();
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setAlignment(Qt::AlignTop | Qt::AlignLeft);
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this->setText(m_text);
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} else {
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this->setText(fontMetrics.elidedText(m_text, Qt::ElideRight, this->width()));
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}
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} else {
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if (m_bWordWrap) {
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// 恢复控件大小及位置
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setGeometry(m_rect);
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setAlignment(Qt::AlignVCenter | Qt::AlignLeft);
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}
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this->setText(m_text);
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}
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QLabel::paintEvent(event);
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}
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