53 lines
2.0 KiB
C++
53 lines
2.0 KiB
C++
#include "ElaImageCard.h"
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#include <QGraphicsDropShadowEffect>
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#include <QPainter>
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#include <QPainterPath>
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#include "ElaImageCardPrivate.h"
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#include "ElaTheme.h"
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Q_PROPERTY_CREATE_Q_CPP(ElaImageCard, QImage, CardImage);
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Q_PROPERTY_CREATE_Q_CPP(ElaImageCard, int, BorderRadius)
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Q_PROPERTY_CREATE_Q_CPP(ElaImageCard, bool, IsPreserveAspectCrop)
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Q_PROPERTY_CREATE_Q_CPP(ElaImageCard, qreal, MaximumAspectRatio)
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ElaImageCard::ElaImageCard(QWidget *parent) : QWidget(parent), d_ptr(new ElaImageCardPrivate()) {
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Q_D(ElaImageCard);
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d->q_ptr = this;
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d->_pBorderRadius = 6;
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d->_pMaximumAspectRatio = 2.2;
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d->_pIsPreserveAspectCrop = true;
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setMinimumSize(350, 260);
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d->_themeMode = eTheme->getThemeMode();
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connect(eTheme, &ElaTheme::themeModeChanged, this, [=](ElaThemeType::ThemeMode themeMode) { d->_themeMode = themeMode; });
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}
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ElaImageCard::~ElaImageCard() {}
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void ElaImageCard::paintEvent(QPaintEvent *event) {
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Q_D(ElaImageCard);
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QPainter painter(this);
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painter.save();
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painter.setPen(Qt::NoPen);
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painter.setRenderHints(QPainter::SmoothPixmapTransform | QPainter::Antialiasing);
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QPainterPath path;
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path.addRoundedRect(rect(), d->_pBorderRadius, d->_pBorderRadius);
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painter.setClipPath(path);
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// 图片绘制
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if (d->_pIsPreserveAspectCrop) {
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qreal itemAspectRatio = (qreal)rect().width() / rect().height();
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if (itemAspectRatio < d->_pMaximumAspectRatio) {
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itemAspectRatio = d->_pMaximumAspectRatio;
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qreal cropHeight = d->_pCardImage.width() / itemAspectRatio;
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painter.drawImage(QRect(0, 0, this->height() * d->_pMaximumAspectRatio, rect().height()), d->_pCardImage,
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QRectF(0, 0, d->_pCardImage.width(), cropHeight));
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} else {
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qreal cropHeight = d->_pCardImage.width() / itemAspectRatio;
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painter.drawImage(rect(), d->_pCardImage, QRectF(0, 0, d->_pCardImage.width(), cropHeight));
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}
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} else {
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painter.drawImage(rect(), d->_pCardImage);
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}
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painter.restore();
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}
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