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https://github.com/linuxdeepin/dde-dock.git
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112 lines
2.9 KiB
C++
112 lines
2.9 KiB
C++
#include "floatingpreview.h"
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#include "appsnapshot.h"
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#include "_previewcontainer.h"
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#include <QPainter>
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#include <QVBoxLayout>
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FloatingPreview::FloatingPreview(QWidget *parent)
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: QWidget(parent),
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m_closeBtn(new DImageButton)
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{
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m_closeBtn->setFixedSize(24, 24);
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m_closeBtn->setNormalPic(":/icons/resources/close_round_normal.png");
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m_closeBtn->setHoverPic(":/icons/resources/close_round_hover.png");
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m_closeBtn->setPressPic(":/icons/resources/close_round_press.png");
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QVBoxLayout *centralLayout = new QVBoxLayout;
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centralLayout->addWidget(m_closeBtn);
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centralLayout->setAlignment(m_closeBtn, Qt::AlignRight | Qt::AlignTop);
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centralLayout->setMargin(0);
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centralLayout->setSpacing(0);
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setLayout(centralLayout);
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setFixedSize(SNAP_WIDTH, SNAP_HEIGHT);
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connect(m_closeBtn, &DImageButton::clicked, this, &FloatingPreview::onCloseBtnClicked);
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}
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void FloatingPreview::trackWindow(AppSnapshot * const snap)
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{
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if (!m_tracked.isNull())
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m_tracked->removeEventFilter(this);
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snap->installEventFilter(this);
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m_tracked = snap;
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const QRect r = rect();
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const QRect sr = snap->geometry();
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const QPoint offset = sr.center() - r.center();
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emit requestMove(offset);
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}
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void FloatingPreview::paintEvent(QPaintEvent *e)
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{
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QWidget::paintEvent(e);
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if (m_tracked.isNull())
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return;
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const QImage snapshot = m_tracked->snapshot();
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if (snapshot.isNull())
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return;
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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const QRect r = rect().marginsRemoved(QMargins(8, 8, 8, 8));
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const QImage im = snapshot.scaled(r.size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
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const QRect ir = im.rect();
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const QPoint offset = r.center() - ir.center();
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const int radius = 4;
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// draw background
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painter.setPen(Qt::NoPen);
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painter.setBrush(QColor(255, 255, 255, 255 * 0.3));
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painter.drawRoundedRect(r, radius, radius);
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// draw preview image
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painter.drawImage(offset.x(), offset.y(), im);
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// bottom black background
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QRect bgr = r;
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bgr.setTop(bgr.bottom() - 25);
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QRect bgre = bgr;
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bgre.setTop(bgr.top() - radius);
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painter.save();
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painter.setClipRect(bgr);
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painter.setPen(Qt::NoPen);
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painter.setBrush(QColor(0, 0, 0, 255 * 0.3));
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painter.drawRoundedRect(bgre, radius, radius);
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painter.restore();
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// bottom title
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painter.setPen(Qt::white);
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painter.drawText(bgr, Qt::AlignCenter, m_tracked->title());
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}
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void FloatingPreview::mouseReleaseEvent(QMouseEvent *e)
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{
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QWidget::mouseReleaseEvent(e);
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emit m_tracked->clicked(m_tracked->wid());
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}
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bool FloatingPreview::eventFilter(QObject *watched, QEvent *event)
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{
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if (watched == m_tracked && event->type() == QEvent::Destroy)
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hide();
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return QWidget::eventFilter(watched, event);
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}
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void FloatingPreview::onCloseBtnClicked()
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{
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Q_ASSERT(!m_tracked.isNull());
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m_tracked->closeWindow();
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}
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