Disable acrylic blur by default

If the user want to use it, the user should enable it.

Signed-off-by: Yuhang Zhao <2546789017@qq.com>

examples/quick/qml/main.qml

@@ -50,6 +50,7 @@ Window {
     AcrylicItem {
         id: acrylicItem
         anchors.fill: parent
+        acrylicEnabled: true
         frameVisible: true
     }
 

examples/widget/widget.cpp

@@ -49,6 +49,17 @@ void Widget::moveToDesktopCenter()
     move(newX, newY);
 }
 
+void Widget::showEvent(QShowEvent *event)
+{
+    QtAcrylicWidget::showEvent(event);
+    static bool inited = false;
+    if (!inited) {
+        FramelessWindowsManager::addWindow(windowHandle());
+        setAcrylicEnabled(true);
+        inited = true;
+    }
+}
+
 void Widget::timerEvent(QTimerEvent *event)
 {
     QtAcrylicWidget::timerEvent(event);

examples/widget/widget.h

@@ -43,6 +43,7 @@ public:
     Q_INVOKABLE void moveToDesktopCenter();
 
 protected:
+    void showEvent(QShowEvent *event) override;
     void timerEvent(QTimerEvent *event) override;
 
 private:

qtacryliceffecthelper.cpp

@@ -227,7 +227,12 @@ void QtAcrylicEffectHelper::paintBackground(QPainter *painter, const QRect &rect
     } else {
         // Emulate blur behind window by blurring the desktop wallpaper.
         updateBehindWindowBackground();
-        painter->drawPixmap(QPoint{0, 0}, m_bluredWallpaper, QRect{m_window->mapToGlobal(QPoint{0, 0}), rect.size()});
+        QPoint point = m_window->mapToGlobal(QPoint{0, 0});
+        const QRect geometry = Utilities::getScreenAvailableGeometry(m_window);
+        if (geometry.isValid()) {
+            point -= geometry.topLeft();
+        }
+        painter->drawPixmap(QPoint{0, 0}, m_bluredWallpaper, QRect{point, rect.size()});
     }
     painter->setCompositionMode(QPainter::CompositionMode_SourceOver);
     painter->setOpacity(1);
@@ -299,10 +304,13 @@ void QtAcrylicEffectHelper::updateAcrylicBrush(const QColor &alternativeTintColo
 
 void QtAcrylicEffectHelper::updateBehindWindowBackground()
 {
+    if (!checkWindow()) {
+        return;
+    }
     if (!m_bluredWallpaper.isNull()) {
         return;
     }
-    const QSize size = Utilities::getScreenAvailableGeometry().size();
+    const QSize size = Utilities::getScreenAvailableGeometry(m_window).size();
     m_bluredWallpaper = QPixmap(size);
     m_bluredWallpaper.fill(Qt::transparent);
     QImage image = Utilities::getDesktopWallpaperImage();

qtacrylicitem.cpp

@@ -30,8 +30,6 @@
 
 QtAcrylicItem::QtAcrylicItem(QQuickItem *parent) : QQuickPaintedItem(parent)
 {
-    m_acrylicHelper.showWarning();
-
     connect(this, &QtAcrylicItem::windowChanged, this, [this](QQuickWindow *win){
         if (m_repaintConnection) {
             disconnect(m_repaintConnection);

qtacrylicitem.h

@@ -83,5 +83,5 @@ private:
     QtAcrylicEffectHelper m_acrylicHelper;
     bool m_frameVisible = true;
     QMetaObject::Connection m_repaintConnection = {};
-    bool m_acrylicEnabled = true;
+    bool m_acrylicEnabled = false;
 };

qtacrylicwidget.cpp

@@ -24,14 +24,12 @@
 
 #include "qtacrylicwidget.h"
 #include "utilities.h"
-#include "framelesswindowsmanager.h"
 #include <QtCore/qdebug.h>
 #include <QtGui/qevent.h>
 #include <QtGui/qpainter.h>
 
 QtAcrylicWidget::QtAcrylicWidget(QWidget *parent) : QWidget(parent)
 {
-    m_acrylicHelper.showWarning();
 }
 
 QtAcrylicWidget::~QtAcrylicWidget() = default;
@@ -163,11 +161,9 @@ void QtAcrylicWidget::showEvent(QShowEvent *event)
 {
     QWidget::showEvent(event);
     if (!m_inited) {
-        FramelessWindowsManager::addWindow(windowHandle());
         m_acrylicHelper.install(windowHandle());
         m_acrylicHelper.updateAcrylicBrush(tintColor());
         connect(&m_acrylicHelper, &QtAcrylicEffectHelper::needsRepaint, this, qOverload<>(&QtAcrylicWidget::update));
-        setAcrylicEnabled(true);
         m_inited = true;
     }
 }

utilities.cpp

@@ -374,8 +374,14 @@ QWindow *Utilities::findWindow(const WId winId)
     return nullptr;
 }
 
-QRect Utilities::getScreenAvailableGeometry()
+QRect Utilities::getScreenAvailableGeometry(const QWindow *window)
 {
+    if (window) {
+        const QScreen *screen = window->screen();
+        if (screen) {
+            return screen->availableGeometry();
+        }
+    }
     return QGuiApplication::primaryScreen()->availableGeometry();
 }
 
@@ -470,3 +476,14 @@ bool Utilities::isMouseInSpecificObjects(const QPointF &mousePos, const QObjectL
     }
     return false;
 }
+
+QRect Utilities::getScreenAvailableGeometry(const QPoint &pos)
+{
+    if (!pos.isNull()) {
+        const QScreen *screen = QGuiApplication::screenAt(pos);
+        if (screen) {
+            return screen->availableGeometry();
+        }
+    }
+    return QGuiApplication::primaryScreen()->availableGeometry();
+}

utilities.h

@@ -61,7 +61,8 @@ FRAMELESSHELPER_EXPORT QWindow *findWindow(const WId winId);
 FRAMELESSHELPER_EXPORT QImage getDesktopWallpaperImage(const int screen = -1);
 FRAMELESSHELPER_EXPORT DesktopWallpaperAspectStyle getDesktopWallpaperAspectStyle(const int screen = -1);
 
-FRAMELESSHELPER_EXPORT QRect getScreenAvailableGeometry();
+FRAMELESSHELPER_EXPORT QRect getScreenAvailableGeometry(const QWindow *window);
+FRAMELESSHELPER_EXPORT QRect getScreenAvailableGeometry(const QPoint &pos);
 
 FRAMELESSHELPER_EXPORT QRect alignedRect(const Qt::LayoutDirection direction, const Qt::Alignment alignment, const QSize &size, const QRect &rectangle);