feat: add wallpaper transitions, store crop in database per-wallpaper, move CUDA context creation to async thread

Plugins/ZShell/Internal/wallpaperobject.cpp

@@ -67,8 +67,46 @@ void WallpaperObject::setZoom(qreal zoom) {
 	push();
 }
 
+void WallpaperObject::syncCrop(const QVariantMap& crop) {
+	const qreal x = crop.value("x").toDouble();
+	const qreal y = crop.value("y").toDouble();
+	const qreal width = crop.contains("width") ? crop.value("width").toDouble()
+											   : 1.0;
+	const qreal height = crop.contains("height")
+							 ? crop.value("height").toDouble()
+							 : 1.0;
+	const qreal z =
+		crop.contains("zoom") ? crop.value("zoom").toDouble() : 1.0;
+
+	const bool prev = m_pushEnabled;
+	m_pushEnabled = false;
+
+	if (!qFuzzyCompare(m_cropX, x)) {
+		m_cropX = x;
+		emit cropXChanged();
+	}
+	if (!qFuzzyCompare(m_cropY, y)) {
+		m_cropY = y;
+		emit cropYChanged();
+	}
+	if (!qFuzzyCompare(m_cropWidth, width)) {
+		m_cropWidth = width;
+		emit cropWidthChanged();
+	}
+	if (!qFuzzyCompare(m_cropHeight, height)) {
+		m_cropHeight = height;
+		emit cropHeightChanged();
+	}
+	if (!qFuzzyCompare(m_zoom, z)) {
+		m_zoom = z;
+		emit zoomChanged();
+	}
+
+	m_pushEnabled = prev;
+}
+
 void WallpaperObject::push() {
-	if (!m_service || m_screen.isEmpty()) return;
+	if (!m_pushEnabled || !m_service || m_screen.isEmpty()) return;
 
 	QVariantMap crop;
 	crop.insert("x", m_cropX);