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60 lines
2.7 KiB
C++
60 lines
2.7 KiB
C++
#include "StdInc.h"
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#include <QPropertyAnimation>
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#include "Spoiler.h"
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Spoiler::Spoiler(const QString & title, const int animationDuration, QWidget *parent) : QWidget(parent), animationDuration(animationDuration)
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{
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toggleButton.setStyleSheet("QToolButton { border: none; }");
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toggleButton.setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
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toggleButton.setArrowType(Qt::ArrowType::RightArrow);
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toggleButton.setText(title);
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toggleButton.setCheckable(true);
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toggleButton.setChecked(false);
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headerLine.setFrameShape(QFrame::HLine);
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headerLine.setFrameShadow(QFrame::Sunken);
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headerLine.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Maximum);
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contentArea.setStyleSheet("QScrollArea { background-color: white; border: none; }");
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contentArea.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
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// start out collapsed
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contentArea.setMaximumHeight(0);
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contentArea.setMinimumHeight(0);
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// let the entire widget grow and shrink with its content
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toggleAnimation.addAnimation(new QPropertyAnimation(this, "minimumHeight"));
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toggleAnimation.addAnimation(new QPropertyAnimation(this, "maximumHeight"));
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toggleAnimation.addAnimation(new QPropertyAnimation(&contentArea, "maximumHeight"));
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// don't waste space
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mainLayout.setVerticalSpacing(0);
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mainLayout.setContentsMargins(0, 0, 0, 0);
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int row = 0;
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mainLayout.addWidget(&toggleButton, row, 0, 1, 1, Qt::AlignLeft);
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mainLayout.addWidget(&headerLine, row++, 2, 1, 1);
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mainLayout.addWidget(&contentArea, row, 0, 1, 3);
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setLayout(&mainLayout);
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QObject::connect(&toggleButton, &QToolButton::clicked, [this](const bool checked) {
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toggleButton.setArrowType(checked ? Qt::ArrowType::DownArrow : Qt::ArrowType::RightArrow);
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toggleAnimation.setDirection(checked ? QAbstractAnimation::Forward : QAbstractAnimation::Backward);
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toggleAnimation.start();
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});
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}
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void Spoiler::setContentLayout(QLayout & contentLayout)
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{
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delete contentArea.layout();
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contentArea.setLayout(&contentLayout);
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const auto collapsedHeight = sizeHint().height() - contentArea.maximumHeight();
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auto contentHeight = contentLayout.sizeHint().height();
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for (int i = 0; i < toggleAnimation.animationCount() - 1; ++i) {
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QPropertyAnimation * spoilerAnimation = static_cast<QPropertyAnimation *>(toggleAnimation.animationAt(i));
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spoilerAnimation->setDuration(animationDuration);
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spoilerAnimation->setStartValue(collapsedHeight);
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spoilerAnimation->setEndValue(collapsedHeight + contentHeight);
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}
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QPropertyAnimation * contentAnimation = static_cast<QPropertyAnimation *>(toggleAnimation.animationAt(toggleAnimation.animationCount() - 1));
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contentAnimation->setDuration(animationDuration);
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contentAnimation->setStartValue(0);
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contentAnimation->setEndValue(contentHeight);
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}
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