support preview without composite

Change-Id: I212cbb0eb5f833a8a19f53dd729cd1da028118c9

frame/item/components/_previewcontainer.cpp

@@ -6,6 +6,7 @@
 
 #define SPACING           0
 #define MARGIN            0
+#define SNAP_HEIGHT_WITHOUT_COMPOSITE       30
 
 _PreviewContainer::_PreviewContainer(QWidget *parent)
     : QWidget(parent),
@@ -92,15 +93,19 @@ void _PreviewContainer::checkMouseLeave()
 
 void _PreviewContainer::adjustSize()
 {
-    const bool horizontal = m_windowListLayout->direction() == QBoxLayout::LeftToRight;
     const int count = m_snapshots.size();
-
-    if (!count)
+    const bool composite = m_wmHelper->hasComposite();
+    if (!composite)
+    {
+        const int h = SNAP_HEIGHT_WITHOUT_COMPOSITE * count + MARGIN * 2 + SPACING * (count - 1);
+        setFixedSize(SNAP_WIDTH, h);
         return;
+    }
 
     const QRect r = qApp->primaryScreen()->geometry();
     const int padding = 20;
 
+    const bool horizontal = m_windowListLayout->direction() == QBoxLayout::LeftToRight;
     if (horizontal)
     {
         const int h = SNAP_HEIGHT + MARGIN * 2;
@@ -147,6 +152,9 @@ void _PreviewContainer::leaveEvent(QEvent *e)
 
 void _PreviewContainer::previewEntered(const WId wid)
 {
+    if (!m_wmHelper->hasComposite())
+        return;
+
     AppSnapshot *snap = static_cast<AppSnapshot *>(sender());
 
     m_floatingPreview->trackWindow(snap);

frame/item/components/appsnapshot.cpp

@@ -8,12 +8,36 @@
 
 #include <QX11Info>
 #include <QPainter>
+#include <QVBoxLayout>
 
 AppSnapshot::AppSnapshot(const WId wid, QWidget *parent)
     : QWidget(parent),
 
-      m_wid(wid)
+      m_wid(wid),
+
+      m_title(new QLabel),
+      m_closeBtn(new DImageButton),
+
+      m_wmHelper(DWindowManagerHelper::instance())
 {
+    m_closeBtn->setFixedSize(24, 24);
+    m_closeBtn->setNormalPic(":/icons/resources/close_round_normal.png");
+    m_closeBtn->setHoverPic(":/icons/resources/close_round_hover.png");
+    m_closeBtn->setPressPic(":/icons/resources/close_round_press.png");
+    m_closeBtn->setVisible(false);
+
+    QHBoxLayout *centralLayout = new QHBoxLayout;
+    centralLayout->addWidget(m_title);
+    centralLayout->addWidget(m_closeBtn);
+    centralLayout->setSpacing(5);
+    centralLayout->setMargin(0);
+
+    setLayout(centralLayout);
+
+    connect(m_closeBtn, &DImageButton::clicked, this, &AppSnapshot::closeWindow, Qt::QueuedConnection);
+    connect(m_wmHelper, &DWindowManagerHelper::hasCompositeChanged, this, &AppSnapshot::compositeChanged, Qt::QueuedConnection);
+
+    QTimer::singleShot(1, this, &AppSnapshot::compositeChanged);
 //    QTimer::singleShot(1, this, &AppSnapshot::fetchSnapshot);
 }
 
@@ -35,13 +59,24 @@ void AppSnapshot::closeWindow() const
     XFlush(display);
 }
 
+void AppSnapshot::compositeChanged() const
+{
+    const bool composite = m_wmHelper->hasComposite();
+
+    m_title->setVisible(!composite);
+//    m_closeBtn->setVisible(!composite);
+}
+
 void AppSnapshot::setWindowTitle(const QString &title)
 {
-    m_title = title;
+    m_title->setText(title);
 }
 
 void AppSnapshot::fetchSnapshot()
 {
+    if (!m_wmHelper->hasComposite())
+        return;
+
     const auto display = QX11Info::display();
 
     XWindowAttributes attrs;
@@ -84,7 +119,17 @@ void AppSnapshot::enterEvent(QEvent *e)
 {
     QWidget::enterEvent(e);
 
-    emit entered(m_wid);
+    if (!m_wmHelper->hasComposite())
+        m_closeBtn->setVisible(true);
+    else
+        emit entered(m_wid);
+}
+
+void AppSnapshot::leaveEvent(QEvent *e)
+{
+    QWidget::leaveEvent(e);
+
+    m_closeBtn->setVisible(false);
 }
 
 void AppSnapshot::paintEvent(QPaintEvent *e)
@@ -93,6 +138,12 @@ void AppSnapshot::paintEvent(QPaintEvent *e)
 
     QPainter painter(this);
 
+    if (!m_wmHelper->hasComposite() && underMouse())
+    {
+        painter.fillRect(rect(), QColor(255, 255, 255, 255 * .2));
+        return;
+    }
+
     if (m_snapshot.isNull())
         return;
 

frame/item/components/appsnapshot.h

@@ -4,6 +4,12 @@
 #include <QWidget>
 #include <QDebug>
 #include <QTimer>
+#include <QLabel>
+
+#include <dimagebutton.h>
+#include <DWindowManagerHelper>
+
+DWIDGET_USE_NAMESPACE
 
 class AppSnapshot : public QWidget
 {
@@ -14,7 +20,7 @@ public:
 
     WId wid() const { return m_wid; }
     const QImage snapshot() const { return m_snapshot; }
-    const QString title() const { return m_title; }
+    const QString title() const { return m_title->text(); }
 
 signals:
     void entered(const WId wid) const;
@@ -23,18 +29,23 @@ signals:
 public slots:
     void fetchSnapshot();
     void closeWindow() const;
+    void compositeChanged() const;
     void setWindowTitle(const QString &title);
 
 private:
     void enterEvent(QEvent *e);
+    void leaveEvent(QEvent *e);
     void paintEvent(QPaintEvent *e);
     void mousePressEvent(QMouseEvent *e);
 
 private:
     const WId m_wid;
 
-    QString m_title;
     QImage m_snapshot;
+    QLabel *m_title;
+    DImageButton *m_closeBtn;
+
+    DWindowManagerHelper *m_wmHelper;
 };
 
 #endif // APPSNAPSHOT_H

frame/item/components/floatingpreview.cpp

@@ -49,6 +49,7 @@ void FloatingPreview::paintEvent(QPaintEvent *e)
         return;
 
     QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
 
     const QRect r = rect().marginsRemoved(QMargins(8, 8, 8, 8));
     const QImage snapshot = m_tracked->snapshot();
@@ -69,7 +70,6 @@ void FloatingPreview::paintEvent(QPaintEvent *e)
     // draw border
     const QRect br = r.marginsAdded(QMargins(1, 1, 1, 1));
     painter.setBrush(Qt::transparent);
-    painter.setRenderHint(QPainter::Antialiasing);
     painter.drawRoundedRect(br, 3, 3);
 }