mirror of
https://github.com/linuxdeepin/dde-dock.git
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c0f80b74ff
优化应用预览界面显示方式，使用滚动方式加载预览界面 在打开应用程序很多时，无法显示更多预览界面，不方便切换预览 Log: 修复可多开的应用打开超过20个后，任务栏预览效果不能全部展示的问题 Bug: https://pms.uniontech.com/bug-view-152143.html Bug: https://pms.uniontech.com/bug-view-162757.html Influence: 可多开的应用打开超过20个后，预览界面可以滚动选择未显示的界面
441 lines
15 KiB
C++
441 lines
15 KiB
C++
// SPDX-FileCopyrightText: 2011 - 2022 UnionTech Software Technology Co., Ltd.
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//
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// SPDX-License-Identifier: LGPL-3.0-or-later
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#include "previewcontainer.h"
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#include "imageutil.h"
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#include "utils.h"
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#include <QDesktopWidget>
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#include <QScreen>
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#include <QApplication>
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#include <QDragEnterEvent>
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#include <QDesktopWidget>
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#include <QCursor>
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#include <QGSettings>
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#include <QScrollBar>
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#include <QScroller>
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#define SPACING 0
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#define MARGIN 0
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PreviewContainer::PreviewContainer(QWidget *parent)
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: QWidget(parent)
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, m_needActivate(false)
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, m_canPreview(true)
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, m_dockSize(40)
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, m_floatingPreview(new FloatingPreview(this))
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, m_preparePreviewTimer(new QTimer(this))
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, m_mouseLeaveTimer(new QTimer(this))
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, m_wmHelper(DWindowManagerHelper::instance())
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, m_titleMode(HoverShow)
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{
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m_windowListLayout = new QBoxLayout(QBoxLayout::LeftToRight);
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m_windowListLayout->setSpacing(SPACING);
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m_windowListLayout->setContentsMargins(MARGIN, MARGIN, MARGIN, MARGIN);
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m_windowListWidget = new QWidget(this);
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m_windowListWidget->setAccessibleName("centralLayoutWidget");
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m_windowListWidget->setLayout(m_windowListLayout);
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m_windowListWidget->setMinimumSize(SNAP_WIDTH, SNAP_HEIGHT);
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m_windowListWidget->installEventFilter(this);
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m_windowListWidget->setAttribute(Qt::WA_TranslucentBackground);
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m_windowListWidget->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
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m_scrollArea = new QScrollArea(this);
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m_scrollArea->setAccessibleName("Preview_scrollArea");
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m_scrollArea->setWidgetResizable(false);
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m_scrollArea->setFrameStyle(QFrame::NoFrame);
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m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_scrollArea->setContentsMargins(0, 0, 0, 0);
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m_scrollArea->setBackgroundRole(QPalette::Base);
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m_scrollArea->setWidget(m_windowListWidget);
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m_scrollArea->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
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QVBoxLayout * mainLayout = new QVBoxLayout;
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mainLayout->setContentsMargins(0, 0, 0, 0);
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mainLayout->setSpacing(0);
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mainLayout->addWidget(m_scrollArea);
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setLayout(mainLayout);
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// 设置触摸屏手势识别
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QScroller::grabGesture(m_scrollArea->viewport(), QScroller::LeftMouseButtonGesture);
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QScroller *scroller = QScroller::scroller(m_scrollArea->viewport());
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m_sp.setScrollMetric(QScrollerProperties::VerticalOvershootPolicy, QScrollerProperties::OvershootWhenScrollable);
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m_sp.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QScrollerProperties::OvershootWhenScrollable);
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scroller->setScrollerProperties(m_sp);
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m_mouseLeaveTimer->setSingleShot(true);
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m_mouseLeaveTimer->setInterval(300);
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m_preparePreviewTimer->setSingleShot(true);
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m_preparePreviewTimer->setInterval(300);
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m_floatingPreview->installEventFilter(this);
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m_floatingPreview->setVisible(false);
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m_waitForShowPreviewTimer = new QTimer(this);
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m_waitForShowPreviewTimer->setSingleShot(true);
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m_waitForShowPreviewTimer->setInterval(200);
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setAcceptDrops(true);
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setFixedSize(SNAP_WIDTH, SNAP_HEIGHT);
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connect(m_mouseLeaveTimer, &QTimer::timeout, this, &PreviewContainer::checkMouseLeave, Qt::QueuedConnection);
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connect(m_waitForShowPreviewTimer, &QTimer::timeout, this, &PreviewContainer::previewFloating);
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// 预览界面在滚动时，暂时不允许预览，避免在滚动时频繁切换预览造成闪屏
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connect(m_scrollArea->horizontalScrollBar(), &QScrollBar::valueChanged, this, [ = ]{
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m_floatingPreview->setVisible(false);
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m_canPreview = false;
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if (m_preparePreviewTimer->isActive()) {
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m_preparePreviewTimer->stop();
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}
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m_preparePreviewTimer->start();
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});
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connect(m_scrollArea->verticalScrollBar(), &QScrollBar::valueChanged, this, [ = ]{
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m_floatingPreview->setVisible(false);
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m_canPreview = false;
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if (m_preparePreviewTimer->isActive()) {
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m_preparePreviewTimer->stop();
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}
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m_preparePreviewTimer->start();
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});
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// 停止滚动后允许预览
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connect(m_preparePreviewTimer, &QTimer::timeout, this, [ = ]{
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m_canPreview = true;
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if (m_wmHelper->hasComposite()) {
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m_waitForShowPreviewTimer->start();
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}
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});
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}
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void PreviewContainer::setWindowInfos(const WindowInfoMap &infos, const WindowList &allowClose)
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{
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// check removed window
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for (auto it(m_snapshots.begin()); it != m_snapshots.end();) {
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if (!infos.contains(it.key())) {
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m_windowListLayout->removeWidget(it.value());
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it.value()->deleteLater();
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it = m_snapshots.erase(it);
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} else {
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++it;
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}
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}
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for (auto it(infos.cbegin()); it != infos.cend(); ++it) {
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const WId key = it.key();
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if (!m_snapshots.contains(key))
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appendSnapWidget(key);
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m_snapshots[key]->setWindowInfo(it.value());
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m_snapshots[key]->setCloseAble(allowClose.contains(key));
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}
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if (m_snapshots.isEmpty()) {
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emit requestCancelPreviewWindow();
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emit requestHidePopup();
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}
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adjustSize(m_wmHelper->hasComposite());
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}
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void PreviewContainer::setTitleDisplayMode(int mode)
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{
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m_titleMode = static_cast<TitleDisplayMode>(mode);
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if (!m_wmHelper->hasComposite())
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return;
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m_floatingPreview->setFloatingTitleVisible(m_titleMode == HoverShow);
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for (AppSnapshot *snap : m_snapshots) {
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snap->setTitleVisible(m_titleMode == AlwaysShow);
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}
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}
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void PreviewContainer::updateLayoutDirection(const Dock::Position dockPos)
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{
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m_dockPos = dockPos;
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if (m_wmHelper->hasComposite() && (dockPos == Dock::Top || dockPos == Dock::Bottom)) {
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m_windowListLayout->setDirection(QBoxLayout::LeftToRight);
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m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_sp.setScrollMetric(QScrollerProperties::VerticalOvershootPolicy, QScrollerProperties::OvershootAlwaysOff);
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m_sp.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QScrollerProperties::OvershootWhenScrollable);
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} else {
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m_scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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m_scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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m_windowListLayout->setDirection(QBoxLayout::TopToBottom);
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m_sp.setScrollMetric(QScrollerProperties::VerticalOvershootPolicy, QScrollerProperties::OvershootWhenScrollable);
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m_sp.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QScrollerProperties::OvershootAlwaysOff);
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}
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adjustSize(m_wmHelper->hasComposite());
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}
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void PreviewContainer::updateDockSize(const int size)
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{
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m_dockSize = size;
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}
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void PreviewContainer::checkMouseLeave()
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{
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const bool hover = underMouse();
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if (hover)
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return;
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m_floatingPreview->setVisible(false);
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if (m_wmHelper->hasComposite()) {
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if (m_needActivate) {
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m_needActivate = false;
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emit requestActivateWindow(m_floatingPreview->trackedWid());
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} else {
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Q_EMIT requestHidePopup();
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emit requestCancelPreviewWindow();
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}
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}
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emit requestHidePopup();
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}
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void PreviewContainer::prepareHide()
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{
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m_mouseLeaveTimer->start();
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}
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void PreviewContainer::adjustSize(bool composite)
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{
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const bool horizontal = m_windowListLayout->direction() == QBoxLayout::LeftToRight;
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const int count = m_snapshots.size();
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const int screenWidth = QDesktopWidget().screenGeometry(this).width();
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const int screenHeight = QDesktopWidget().screenGeometry(this).height();
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//先根据屏幕宽高计算出能预览的最大数量,然后根据数量计算界面宽高
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if (composite) {
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if (horizontal) {
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const int h = SNAP_HEIGHT + MARGIN * 2;
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const int w = SNAP_WIDTH * count + MARGIN * 2 + SPACING * (count - 1);
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m_windowListWidget->setFixedSize(w, h);
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setFixedSize(qMin(w, screenWidth), h);
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} else {
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const int h = SNAP_HEIGHT * count + MARGIN * 2 + SPACING * (count - 1);
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const int w = SNAP_WIDTH + MARGIN * 2;
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m_windowListWidget->setFixedSize(w, h);
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setFixedSize(w, qMin(h, screenHeight));
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}
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} else if (m_windowListLayout->count()) {
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// 2D
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const int h = SNAP_HEIGHT_WITHOUT_COMPOSITE * count + MARGIN * 2 + SPACING * (count - 1);
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int titleWidth = 0;
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for (int i = 0; i < m_windowListLayout->count(); i++) {
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auto snapshotWidget = static_cast<AppSnapshot *>(m_windowListLayout->itemAt(i)->widget());
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titleWidth = qMax(titleWidth, snapshotWidget->minimumWidth());
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}
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m_windowListWidget->setFixedSize(titleWidth, h);
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if (m_dockPos == Dock::Top || m_dockPos == Dock::Bottom) {
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// 滚动区域高度 = 屏幕高度 - 任务栏高度 - 箭头高度
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setFixedSize(titleWidth, qMin(h, screenHeight - m_dockSize - 20));
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} else {
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// 滚动区域高度 = 屏幕高度
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setFixedSize(titleWidth, qMin(h, screenHeight));
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}
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}
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}
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void PreviewContainer::appendSnapWidget(const WId wid)
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{
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//创建预览界面,默认不显示,等计算出显示数量后再加入布局并显示
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AppSnapshot *snap = new AppSnapshot(wid);
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connect(snap, &AppSnapshot::clicked, this, &PreviewContainer::onSnapshotClicked, Qt::QueuedConnection);
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connect(snap, &AppSnapshot::entered, this, &PreviewContainer::previewEntered, Qt::QueuedConnection);
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connect(snap, &AppSnapshot::requestCheckWindow, this, &PreviewContainer::requestCheckWindows, Qt::QueuedConnection);
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connect(snap, &AppSnapshot::requestCloseAppSnapshot, this, &PreviewContainer::onRequestCloseAppSnapshot);
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m_snapshots.insert(wid, snap);
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m_windowListLayout->addWidget(snap);
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}
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void PreviewContainer::enterEvent(QEvent *e)
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{
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if (Utils::IS_WAYLAND_DISPLAY) {
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Utils::updateCursor(this);
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}
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QWidget::enterEvent(e);
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m_needActivate = false;
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m_mouseLeaveTimer->stop();
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if (m_wmHelper->hasComposite()) {
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m_waitForShowPreviewTimer->start();
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}
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}
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void PreviewContainer::leaveEvent(QEvent *e)
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{
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QWidget::leaveEvent(e);
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m_mouseLeaveTimer->start();
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m_waitForShowPreviewTimer->stop();
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}
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void PreviewContainer::dragEnterEvent(QDragEnterEvent *e)
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{
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if (!m_wmHelper->hasComposite())
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return;
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e->accept();
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m_needActivate = false;
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m_mouseLeaveTimer->stop();
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}
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void PreviewContainer::dragLeaveEvent(QDragLeaveEvent *e)
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{
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e->ignore();
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m_needActivate = true;
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m_mouseLeaveTimer->start();
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}
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bool PreviewContainer::eventFilter(QObject *watcher, QEvent *event)
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{
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// 将鼠标滚轮事件转换成水平滚动
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if (watcher == m_windowListWidget && event->type() == QEvent::Wheel) {
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QWheelEvent *wheelEvent = static_cast<QWheelEvent *>(event);
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if (m_windowListLayout->direction() == Qt::LeftToRight) {
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const int delta = wheelEvent->delta();
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const int currValue = m_scrollArea->horizontalScrollBar()->value();
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if (currValue - delta <= 0) {
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m_scrollArea->horizontalScrollBar()->setValue(0);
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} else if (currValue - delta >= m_scrollArea->horizontalScrollBar()->maximum()) {
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m_scrollArea->horizontalScrollBar()->setValue(m_scrollArea->horizontalScrollBar()->maximum());
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} else {
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m_scrollArea->horizontalScrollBar()->setValue(currValue - delta);
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}
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return true;
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}
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}
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// 在m_floatingPreview界面显示时，需要响应滚轮事件
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if (watcher == m_floatingPreview && event->type() == QEvent::Wheel) {
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QWheelEvent *wheelEvent = static_cast<QWheelEvent *>(event);
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if (m_windowListLayout->direction() == Qt::LeftToRight) {
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const int delta = wheelEvent->delta();
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const int currValue = m_scrollArea->horizontalScrollBar()->value();
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if (currValue - delta <= 0) {
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m_scrollArea->horizontalScrollBar()->setValue(0);
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} else if (currValue - delta >= m_scrollArea->horizontalScrollBar()->maximum()) {
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m_scrollArea->horizontalScrollBar()->setValue(m_scrollArea->horizontalScrollBar()->maximum());
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} else {
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m_scrollArea->horizontalScrollBar()->setValue(currValue - delta);
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}
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return true;
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} else {
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const int delta = wheelEvent->delta();
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const int currValue = m_scrollArea->verticalScrollBar()->value();
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if (currValue - delta <= 0) {
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m_scrollArea->verticalScrollBar()->setValue(0);
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} else if (currValue - delta >= m_scrollArea->verticalScrollBar()->maximum()) {
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m_scrollArea->verticalScrollBar()->setValue(m_scrollArea->verticalScrollBar()->maximum());
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} else {
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m_scrollArea->verticalScrollBar()->setValue(currValue - delta);
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}
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return true;
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}
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}
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return QWidget::eventFilter(watcher, event);
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}
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void PreviewContainer::onSnapshotClicked(const WId wid)
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{
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if (Utils::IS_WAYLAND_DISPLAY) {
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/* BUGFIX-159303 本地发现该问题仅在wayland下出现，问题已与窗管对接沟通过，根据窗管建议，上层进
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规避，避免因底层强行修改引入新的问题 */
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Q_EMIT requestCancelPreviewWindow();
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}
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Q_EMIT requestActivateWindow(wid);
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m_needActivate = true;
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m_waitForShowPreviewTimer->stop();
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requestHidePopup();
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}
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void PreviewContainer::previewEntered(const WId wid)
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{
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if (!m_wmHelper->hasComposite())
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return;
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AppSnapshot *snap = static_cast<AppSnapshot *>(sender());
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if (!snap) {
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return;
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}
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AppSnapshot *preSnap = m_floatingPreview->trackedWindow();
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if (preSnap && preSnap != snap) {
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preSnap->setWindowState();
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}
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m_currentWId = wid;
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m_floatingPreview->trackWindow(snap);
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if (m_waitForShowPreviewTimer->isActive()) {
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return;
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}
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previewFloating();
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}
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void PreviewContainer::previewFloating()
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{
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if (!m_waitForShowPreviewTimer->isActive() && m_canPreview) {
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// 将单个预览界面在滚动区域的坐标转换到当前界面坐标上
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if (m_floatingPreview->trackedWindow()) {
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const QRect snapGeometry = m_floatingPreview->trackedWindow()->geometry();
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const QPoint topLeft = m_windowListWidget->mapTo(m_scrollArea, snapGeometry.topLeft());
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const QPoint bottomRight = m_windowListWidget->mapTo(m_scrollArea, snapGeometry.bottomRight());
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m_floatingPreview->setGeometry(QRect(topLeft, bottomRight));
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}
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m_floatingPreview->setVisible(true);
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m_floatingPreview->raise();
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requestPreviewWindow(m_currentWId);
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}
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return;
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}
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void PreviewContainer::onRequestCloseAppSnapshot()
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{
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if (!m_wmHelper->hasComposite())
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return ;
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if (m_snapshots.keys().isEmpty()) {
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Q_EMIT requestHidePopup();
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Q_EMIT requestCancelPreviewWindow();
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}
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}
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