94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
#include <QDebug>
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#include <QApplication>
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#include <QFontMetrics>
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#include <QTextOption>
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#include <QWidget>
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#include <QHBoxLayout>
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void testFont() {
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QFont font("Arial", 21);
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//font.setItalic(m_attr.fontItalics);
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font.setStyleStrategy(QFont::NoAntialias);
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QFontMetricsF metric(font);
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QFontMetrics metricI(font);
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qDebug()<<"QFontMetrics";
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qDebug()<<" leading"<<metric.leading();
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qDebug()<<" ascent"<<metric.ascent();
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qDebug()<<" descent"<<metric.descent();
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qDebug()<<" ttl"<<metric.leading()+metric.ascent()+metric.descent();
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qDebug()<<" height"<<metric.height();
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qDebug()<<" lineSpacing"<<metric.lineSpacing()<<metricI.lineSpacing();
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qDebug()<<" capHeight"<<metric.capHeight();
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qDebug()<<" horizontalAdvance"<<metric.horizontalAdvance("0")<<metricI.horizontalAdvance("0");
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qDebug()<<" boundingRect"<<metric.boundingRect("0").width()<<metricI.boundingRect("0").width();
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qDebug()<<" Bearing"<<metric.leftBearing('0')<<metric.rightBearing('0');
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}
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void boundingRect() {
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QFont font("Arial", 18);
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font.setStyleStrategy(QFont::NoAntialias);
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QFontMetricsF metric(font);
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qDebug()<<"boundingRect";
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QRectF rrr(0,0,50,100);
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auto text = "aaa aa";
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qDebug()<<metric.boundingRect(rrr, Qt::TextWordWrap, text);
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qDebug()<<metric.boundingRect(rrr, Qt::TextWrapAnywhere, text);
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qDebug()<<metric.boundingRect(rrr, Qt::TextWordWrap | Qt::TextWrapAnywhere, text);
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}
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#include <QLabel>
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#include <QScrollArea>
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class TestWin : public QWidget {
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public:
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TestWin(){
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resize(400, 100);
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auto hBox = new QHBoxLayout(this);
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hBox->setContentsMargins(100,0,0,0);
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aaa = new QLabel("Aaaaaaaaaaaaaaaaaaaaaaaa");
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aaa->setAutoFillBackground(true);
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QPalette pal;
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pal.setColor(QPalette::Window, Qt::darkGreen);
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aaa->setPalette(pal);
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aaa->setMinimumWidth(10);
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hBox->addWidget(aaa);
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bbb = new QLabel("B");
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bbb->setAutoFillBackground(true);
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pal.setColor(QPalette::Window, Qt::darkCyan);
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bbb->setPalette(pal);
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bbb->setMinimumWidth(1);
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auto poli = aaa->sizePolicy();
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poli.setHorizontalPolicy(QSizePolicy::Expanding);
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aaa->setSizePolicy(poli);
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bbb->setSizePolicy(poli);
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hBox->addWidget(bbb);
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}
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void mouseDoubleClickEvent(QMouseEvent *) override {
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qDebug()<<"sizeHint "<<aaa->sizeHint()<<bbb->sizeHint();
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qDebug()<<"minHint "<<aaa->minimumSizeHint()<<bbb->minimumSizeHint();
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qDebug()<<"sizePolicy"<<aaa->sizePolicy()<<bbb->sizePolicy();
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qDebug()<<"minSize "<<aaa->minimumSize()<<bbb->minimumSize();
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qDebug()<<"maxSize "<<aaa->maximumSize()<<bbb->maximumSize();
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qDebug()<<"size "<<aaa->size()<<bbb->size();
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}
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QWidget *aaa;
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QWidget *bbb;
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};
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int tttmain(int argc, char *argv[]) {
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QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
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QApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
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QApplication a(argc, argv);
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QFont font = a.font();
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font.setPointSize(14);
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a.setFont(font);
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TestWin w;
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w.show();
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return a.exec();
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}
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