81 lines
3.3 KiB
C++
81 lines
3.3 KiB
C++
#include "ElaFlowLayoutPrivate.h"
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#include <QPropertyAnimation>
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#include <QWidget>
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#include "ElaFlowLayout.h"
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ElaFlowLayoutPrivate::ElaFlowLayoutPrivate(QObject *parent) : QObject{parent} {}
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ElaFlowLayoutPrivate::~ElaFlowLayoutPrivate() {}
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int ElaFlowLayoutPrivate::_doLayout(const QRect &rect, bool testOnly) const {
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Q_Q(const ElaFlowLayout);
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int left, top, right, bottom;
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q->getContentsMargins(&left, &top, &right, &bottom);
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QRect effectiveRect = rect.adjusted(+left, +top, -right, -bottom);
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int x = effectiveRect.x();
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int y = effectiveRect.y();
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int lineHeight = 0;
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for (QLayoutItem *item : std::as_const(_itemList)) {
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const QWidget *wid = item->widget();
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int spaceX = q->horizontalSpacing();
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if (spaceX == -1) {
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spaceX = wid->style()->layoutSpacing(QSizePolicy::PushButton, QSizePolicy::PushButton, Qt::Horizontal);
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}
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int spaceY = q->verticalSpacing();
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if (spaceY == -1) {
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spaceY = wid->style()->layoutSpacing(QSizePolicy::PushButton, QSizePolicy::PushButton, Qt::Vertical);
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}
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int nextX = x + item->sizeHint().width() + spaceX;
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if (nextX - spaceX > effectiveRect.right() && lineHeight > 0) {
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x = effectiveRect.x();
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y = y + lineHeight + spaceY;
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nextX = x + item->sizeHint().width() + spaceX;
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lineHeight = 0;
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}
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if (!_lastGeometryMap.contains(item)) {
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_lastGeometryMap.insert(item, QPoint(x, y));
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}
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if (!testOnly) {
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if ((item->geometry().x() == 0 && item->geometry().y() == 0)) {
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item->setGeometry(QRect(QPoint(x, y), item->sizeHint()));
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} else if (item->geometry().x() != x || item->geometry().y() != y) {
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if (_isAnimation) {
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// 阻止多重动画
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if (_lastGeometryMap[item] == QPoint(x, y)) {
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lineHeight = qMax(lineHeight, item->sizeHint().height());
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return y + lineHeight - rect.y() + bottom;
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}
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QPropertyAnimation *geometryAnimation = new QPropertyAnimation(item->widget(), "geometry");
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geometryAnimation->setStartValue(item->widget()->geometry());
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geometryAnimation->setEndValue(QRect(QPoint(x, y), item->sizeHint()));
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geometryAnimation->setDuration(300);
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geometryAnimation->setEasingCurve(QEasingCurve::InOutSine);
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geometryAnimation->start(QAbstractAnimation::DeleteWhenStopped);
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_lastGeometryMap[item] = QPoint(x, y);
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} else {
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item->setGeometry(QRect(QPoint(x, y), item->sizeHint()));
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}
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}
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}
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x = nextX;
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lineHeight = qMax(lineHeight, item->sizeHint().height());
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}
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return y + lineHeight - rect.y() + bottom;
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}
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int ElaFlowLayoutPrivate::_smartSpacing(QStyle::PixelMetric pm) const {
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Q_Q(const ElaFlowLayout);
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QObject *parent = q->parent();
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if (!parent) {
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return -1;
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} else if (parent->isWidgetType()) {
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QWidget *pw = static_cast<QWidget *>(parent);
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return pw->style()->pixelMetric(pm, nullptr, pw);
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} else {
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return static_cast<QLayout *>(parent)->spacing();
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}
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}
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