图元预览改为懒加载；添加帧缓存；修改图元预览渲染机制；固定渲染倍率*

ArchitectureColoredPainting/src/Editor/EditorWidget.cpp

@@ -84,7 +84,7 @@ void EditorWidget::initFileMenu()
 		auto* item = dynamic_cast<EditorWidgetItem*>(this->tabWidget->currentWidget());
 		if (item != nullptr)
 		{
-			//item->save();
+			item->save();
 		}
 		});
 	connect(actionSaveAs, &QAction::triggered, this, [this] {

ArchitectureColoredPainting/src/Editor/EditorWidgetItem.cpp

@@ -25,9 +25,9 @@ EditorWidgetItem::EditorWidgetItem(QString filePath,QWidget *parent) : QWidget(p
     qDebug() << elementInfoDisplayWidget;
     auto centralRefresh = [this]() {
         layerInfoDisplayWidget->refresh();
-		elementInfoDisplayWidget->refresh();
         treeWidget->refresh();
 		previewWindow->refresh();
+		elementInfoDisplayWidget->lazyRefresh();
     };
     connect(previewWindow, &PreviewWindow::triggerCentralRefresh, centralRefresh);
 	connect(layerInfoDisplayWidget, &InfoDisplayWidget::triggerCentralRefresh, centralRefresh);

ArchitectureColoredPainting/src/Editor/ElementPoolWidget.cpp

@@ -4,6 +4,7 @@
 #include <QFileDialog>
 #include <QDialogButtonBox>
 #include <QMessagebox>
+#include <QTimer>
 
 ElementPoolWidget::ElementPoolWidget(QWidget* parent)
 	: QWidget(parent)
@@ -38,10 +39,15 @@ void ElementPoolWidget::setElementList(std::vector<GraphicElement*> elements) {
 	pictureList->clear();
 	this->elements = elements;
 	for (int index = 0; index < elements.size(); index++) {
-		QListWidgetItem* pItem = new QListWidgetItem(
+		QListWidgetItem* pItem = new QListWidgetItem(elements[index]->name);
-			elements[index]->getPreview(QSize(iconWidth - 25, iconHeight - 25)),
+		QPainter* painter = new QPainter();
-			elements[index]->name);
+		QImage* image = new QImage(QSize(iconWidth - 12, iconHeight - 12), QImage::Format_ARGB32);
+		image->fill(Qt::transparent);
+		pItem->setIcon(QIcon(QPixmap::fromImage(*image)));
 		pItem->setSizeHint(QSize(iconWidth, iconHeight));
+		painter->begin(image);
+		elements[index]->paintPreview(painter);
+		painter->end();
 		pictureList->insertItem(index, pItem);
 	}
 	if(elements.size() > 0)
@@ -66,15 +72,47 @@ void ElementPoolWidget::setElementManager(ElementManager* element)
 	this->setElementList(this->elementManager->elements);
 }
 
+void ElementPoolWidget::lazyRefresh()
+{
+	if (!refreshWait) {
+		refreshWait = true;
+		QTimer::singleShot(1000, this, SLOT(refresh()));
+	}
+}
+
 void ElementPoolWidget::refresh() {
-	this->setElementList(this->elementManager->elements);
+	refreshWait = false;
-	// update();
+	if (elementManager != nullptr)
+	{
+		for (int i = 0; i < elements.size(); i++)
+		{
+			QListWidgetItem* pItem = pictureList->item(i);
+			if (pItem == nullptr)
+			{
+				pItem = new QListWidgetItem(elements[i]->name);
+				pictureList->insertItem(i, pItem);
+			}
+			QPainter* painter = new QPainter();
+			QImage* image = new QImage(QSize(iconWidth - 12, iconHeight - 12), QImage::Format_ARGB32);
+			image->fill(Qt::transparent);
+			painter->begin(image);
+			elements[i]->paintPreview(painter);
+			painter->end();
+			pItem->setIcon(QIcon(QPixmap::fromImage(*image)));
+			pItem->setData(Qt::UserRole, QVariant::fromValue(image));
+			pItem->setSizeHint(QSize(iconWidth, iconHeight));
+			pictureList->insertItem(i, pItem);
+		}
+	}
 }
 
 void ElementPoolWidget::refreshPicture(GraphicElement* element) {
 	for (int i = 0; i < elements.size(); i++) {
 		if (element == elements[i]) {
-			pictureList->item(i)->setIcon(elements[i]->getPreview(QSize(iconWidth - 25, iconHeight - 25)));
+			QPainter* painter = new QPainter();
+			painter->begin(pictureList->item(i)->data(Qt::UserRole).value<QImage*>());
+			elements[i]->paintPreview(painter);
+			painter->end();
 			// update();
 			return;
 		}
@@ -84,7 +122,10 @@ void ElementPoolWidget::refreshPicture(GraphicElement* element) {
 void ElementPoolWidget::refreshPictureByIndex(int index) {
 	if (index >= 0 && index < elements.size())
 	{
-		pictureList->item(index)->setIcon(elements[index]->getPreview(QSize(iconWidth - 25, iconHeight - 25)));
+		QPainter* painter = new QPainter();
+		painter->begin(pictureList->item(index)->data(Qt::UserRole).value<QImage*>());
+		elements[index]->paintPreview(painter);
+		painter->end();
 		// update();
 	}
 }
@@ -118,7 +159,6 @@ void ElementPoolWidget::popMenu(const QPoint& pos)
 			});
 		menu->addAction(QString::fromLocal8Bit("ɾ³ý"), this, [this, currentElement]() {
 				this->elementManager->removeElement(currentElement);
-				emit triggerCentralRefresh();
 			});
 		menu->actions().last()->setDisabled(currentElement->referencedCount > 0);
 	}

ArchitectureColoredPainting/src/Editor/ElementPoolWidget.h

@@ -14,6 +14,7 @@ private:
 	QListWidget* pictureList;
 	int iconWidth, iconHeight;
 	ElementManager* elementManager;
+	bool refreshWait = false;
 
 public:
 	int currentIndex = -1;
@@ -22,6 +23,7 @@ public:
 	void setElementManager(ElementManager* element);
 	~ElementPoolWidget();
 	void enableEdit();
+	void lazyRefresh();
 
 signals:
 	void elementSelected(GraphicElement* element);

ArchitectureColoredPainting/src/Editor/GraphicElement.cpp

@@ -45,7 +45,6 @@ void GroupElement::setSourceLayer(FolderLayerWrapper* sourceLayer)
 PixelPath GroupElement::getPaintObject() const
 {
 	if (sourceLayer != nullptr) {
-		sourceLayer->refresh();
 		return sourceLayer->getCache();
 	}
 	else
@@ -113,8 +112,9 @@ void SimpleElement::paint(QPainter* painter, QTransform transform, const LayerSt
 			maxScale = std::max(fabs(transform.m11() / cos(angle)), fabs(transform.m22() / cos(angle)));
 		else
 			maxScale = std::max(fabs(transform.m12() / sin(angle)), fabs(transform.m21() / sin(angle)));
-		double pixelRatio = maxScale * QGuiApplication::primaryScreen()->devicePixelRatio();
+		//double pixelRatio = maxScale * QGuiApplication::primaryScreen()->devicePixelRatio();
-		if (painterPath == painterPathPrev && styles.getHash() == stylesHashValue && pixelRatio == pixelRatioPrev)
+		double pixelRatio = 5;
+		if (painterPath == painterPathPrev && styles.getHash() == stylesHashValue && fabs(pixelRatio - pixelRatioPrev) < 1e-3)
 		{
 			transform.translate(movPrev.x(), movPrev.y());
 			painter->setTransform(transform.scale(1 / pixelRatio, 1 / pixelRatio));
@@ -153,31 +153,26 @@ bool GroupElement::isClosed() const
 }
 
 
-QPixmap SimpleElement::getPreview(QSize size)
+void SimpleElement::paintPreview(QPainter* painter)
 {
-	QPixmap result(size + QSize(5, 5));
+	painter->save();
-	QPainter painter(&result);
+	painter->setWindow(painterPath.boundingRect().x() - 5, painterPath.boundingRect().y() - 5, (painterPath.boundingRect().width() + 10) * QGuiApplication::primaryScreen()->devicePixelRatio(), (painterPath.boundingRect().height() + 10) * QGuiApplication::primaryScreen()->devicePixelRatio());
-	painter.setRenderHint(QPainter::Antialiasing);
+	painter->drawPath(painterPath);
-	painter.setRenderHint(QPainter::SmoothPixmapTransform);
+	painter->restore();
-	painter.scale(size.width() / painterPath.boundingRect().width(), size.height() / painterPath.boundingRect().height());
-	painter.drawPath(painterPath);
-	return result;
 }
 
-QPixmap GroupElement::getPreview(QSize size)
+void GroupElement::paintPreview(QPainter* painter)
 {
+	painter->save();
 	auto cache = sourceLayer->getCache();
-	QPixmap result(QSize(1024, 1024));
+	painter->setRenderHint(QPainter::Antialiasing, true);
-	QPainter painter(&result);
+	painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
-	painter.setRenderHint(QPainter::Antialiasing);
+	painter->setWindow(cache.getBoundingRect().toRect().x() - 5, cache.getBoundingRect().toRect().y() - 5, (cache.getBoundingRect().toRect().width() + 10) * QGuiApplication::primaryScreen()->devicePixelRatio(), (cache.getBoundingRect().toRect().height() + 10) * QGuiApplication::primaryScreen()->devicePixelRatio());
-	painter.setRenderHint(QPainter::SmoothPixmapTransform);
+	//painter->translate(-cache.getBoundingRect().toRect().x() - 5, -cache.getBoundingRect().toRect().y() - 5);
-	sourceLayer->paint(&painter, QTransform(), true);
+	//double maxScale = std::max(cache.getBoundingRect().toRect().width() + 10, cache.getBoundingRect().toRect().height() + 10) * QGuiApplication::primaryScreen()->devicePixelRatio();
-	painter.end();
+	//painter->scale(1 / maxScale, 1/ maxScale);
-	QRect rect(cache.getBoundingRect().toRect());
+	sourceLayer->paint(painter, QTransform(), true);
-	rect.setTopLeft(rect.topLeft() - QPoint(5, 5));
+	painter->restore();
-	rect.setBottomRight(rect.bottomRight() + QPoint(5, 5));
-	result = result.copy(rect);
-	return result.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
 }
 
 void GroupElement::collectReachable(std::set<LayerWrapper*>& set) const

ArchitectureColoredPainting/src/Editor/GraphicElement.h

@@ -20,6 +20,7 @@ class ComposedPainterPath;
 class GraphicElement
 {
 public:
+	bool needRefresh = true;
     size_t referencedCount = 0;
 	Renderer::ElementRenderer *renderer;
     QString name = "";
@@ -35,7 +36,7 @@ public:
     virtual PixelPath getPaintObject(const LayerStyleContainer& styles) const = 0;
     virtual void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) = 0;
     virtual bool isClosed() const = 0;
-    virtual QPixmap getPreview(QSize size) = 0;
+    virtual void paintPreview(QPainter* painter) = 0;
     
 };
 
@@ -59,7 +60,7 @@ public:
     PixelPath getPaintObject(const LayerStyleContainer& styles) const override;
     void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) override;
     bool isClosed() const override;
-    QPixmap getPreview(QSize size) override;
+    void paintPreview(QPainter* painter) override;
 };
 
 class GroupElement : public GraphicElement
@@ -77,10 +78,12 @@ public:
     void setSourceLayer(FolderLayerWrapper* sourceLayer);
     void paint(QPainter* painter, QTransform transform, const LayerStyleContainer& styles) override;
     bool isClosed() const override;
-    QPixmap getPreview(QSize size) override;
+    void paintPreview(QPainter* painter) override;
 	void collectReachable(std::set<LayerWrapper*>& set) const;
 };
 
+Q_DECLARE_METATYPE(GraphicElement*)
+
 //********************************  BitmapPath  ********************************//
 
 //using std::vector;

ArchitectureColoredPainting/src/Editor/LayerManager.cpp

@@ -14,6 +14,7 @@ LayerWrapper *LayerManager::getRoot() const
 void LayerManager::paint(QPainter *painter, QSize size,LayerWrapper* selecetedLayer) const
 {
     painter->save();
+    root->markNeedRefresh();
     root->getCache();
     root->paint(painter);
     painter->restore();

ArchitectureColoredPainting/src/Editor/LayerWrapper.cpp

@@ -25,10 +25,10 @@ FolderLayerWrapper*LayerWrapper::getParent() const
 
 PixelPath LayerWrapper::getCache(LayerWrapper* selectedLayer)
 {
-    this->refresh(selectedLayer);
+    if (needRefresh)
-    if (selectedLayer == this)
     {
-        this->cache.highLight();
+        this->refresh(selectedLayer);
+		needRefresh = false;
     }
     return cache;
 }
@@ -461,3 +461,15 @@ void LayerWrapper::paintVisualBounding(QPainter* painter) const
 	painter->drawRect(cache.getBoundingRect());
 	painter->restore();
 }
+
+void LayerWrapper::markNeedRefresh()
+{
+	this->needRefresh = true;
+}
+
+void FolderLayerWrapper::markNeedRefresh()
+{
+	LayerWrapper::markNeedRefresh();
+	for (auto& child : children)
+		child->markNeedRefresh();
+}

ArchitectureColoredPainting/src/Editor/LayerWrapper.h

@@ -35,6 +35,7 @@ class LayerWrapper
     PixelPath cache;
 
   public:
+    bool needRefresh = true;
 	QTreeWidgetItem* qTreeWidgetItem;
     bool selected;
     bool hidden;
@@ -77,6 +78,7 @@ class LayerWrapper
     virtual bool referencingGroupElement() const;
     virtual void paintVisualBounding(QPainter* painter) const;
     bool canApplyStyles() const;
+	virtual void markNeedRefresh();
 };
 
 class FolderLayerWrapper : public LayerWrapper
@@ -104,6 +106,7 @@ class FolderLayerWrapper : public LayerWrapper
     void refreshTreeItem() override;
     size_t referencedCount(bool excludeSelf = false) const override;
     bool deleteable(bool excludeSubTree = false) const override;
+    void markNeedRefresh() override;
 };
 
 class LeafLayerWrapper : public LayerWrapper

ArchitectureColoredPainting/src/Editor/RightBar/InfoDisplayWidget.cpp

@@ -21,37 +21,51 @@ InfoDisplayWidget::InfoDisplayWidget(QWidget* parent) :QWidget(parent)
     ui.rotation->setLabel(("旋转角度"));
     ui.scaleX->setLabel(("水平缩放"));
     ui.scaleY->setLabel(("垂直缩放"));
-    ui.rotation->setValidator(new QIntValidator(-10000, 10000, this));
+    ui.rotation->setValidator(new QDoubleValidator(-10000, 10000, 6, this));
     ui.styleList->setDisabled(true);
     connect(ui.rotation, &QLineEdit::textChanged, [=](QString content) {
+        if (fabs(content.toDouble() - this->displayLayer->property.rotation) < 1e-6)
+            return;
         this->displayLayer->property.rotation = content.toDouble();
         emit triggerCentralRefresh();
         });
-    ui.offsetX->setValidator(new QIntValidator(-10000, 10000, this));
+    ui.offsetX->setValidator(new QDoubleValidator(-10000, 10000, 2, this));
     connect(ui.offsetX, &QLineEdit::textChanged, [=](QString content) {
+		if (fabs(content.toDouble() - this->displayLayer->property.offset.x()) < 1e-6)
+		    return;
         this->displayLayer->property.offset = { content.toDouble(), this->displayLayer->property.offset.y() };
         emit triggerCentralRefresh();
         });
-    ui.offsetY->setValidator(new QIntValidator(-10000, 10000, this));
+    ui.offsetY->setValidator(new QDoubleValidator(-10000, 10000, 2, this));
     connect(ui.offsetY, &QLineEdit::textChanged, [=](QString content) {
+		if (fabs(content.toDouble() - this->displayLayer->property.offset.y()) < 1e-6)
+		    return;
         this->displayLayer->property.offset = { this->displayLayer->property.offset.x(), content.toDouble() };
         emit triggerCentralRefresh();
         });
-    ui.scaleX->setValidator(new QDoubleValidator(0, 1000, 4, this));
+    ui.scaleX->setValidator(new QDoubleValidator(0, 10000, 6, this));
     connect(ui.scaleX, &QLineEdit::textChanged, [=](QString content) {
+		if (fabs(content.toDouble() - this->displayLayer->property.scale.x()) < 1e-6)
+		    return;
         this->displayLayer->property.scale = { content.toDouble(), this->displayLayer->property.scale.y() };
         emit triggerCentralRefresh();
         });
-    ui.scaleY->setValidator(new QDoubleValidator(0, 1000, 4, this));
+    ui.scaleY->setValidator(new QDoubleValidator(0, 10000, 6, this));
     connect(ui.scaleY, &QLineEdit::textChanged, [=](QString content) {
+		if (fabs(content.toDouble() - this->displayLayer->property.scale.y()) < 1e-6)
+		    return;
         this->displayLayer->property.scale = { this->displayLayer->property.scale.x(), content.toDouble() };
         emit triggerCentralRefresh();
         });
 	connect(ui.flipX, &QtMaterialCheckBox::toggled, [=](bool state) {
+		if (state == this->displayLayer->property.flipX)
+		    return;
 		this->displayLayer->property.flipX = state;
 	    emit triggerCentralRefresh();
 		});
     connect(ui.flipY, &QtMaterialCheckBox::toggled, [=](bool state) {
+		if (state == this->displayLayer->property.flipY)
+		    return;
         this->displayLayer->property.flipY = state;
         emit triggerCentralRefresh();
         });

ArchitectureColoredPainting/src/Editor/RightBar/LayerTreeWidget.cpp

@@ -239,6 +239,7 @@ QAction* LayerTreeWidget::getPromoteUpAction()
 		    auto layer = pair.first;
 			auto parent = pair.second;
             this->moveLayer(layer, parent);
+			this->setCurrentItem(layer->qTreeWidgetItem);
 			});
 		optionList.append(option);
 	}
@@ -255,6 +256,11 @@ QAction* LayerTreeWidget::getPromoteDownAction()
     std::vector<FolderLayerWrapper*> layers;
     auto layer = this->selectedItem->data(0, Qt::UserRole).value<LayerWrapper*>();
 	auto parent = layer->getParent();
+	if (parent == nullptr)
+	{
+		action->setEnabled(false);
+		return action;
+	}
 	for (auto child : parent->children)
 	{
 		if (child.get() == layer || typeid(*child) != typeid(FolderLayerWrapper))
@@ -278,6 +284,7 @@ QAction* LayerTreeWidget::getPromoteDownAction()
             auto layer = pair.first;
             auto parent = pair.second;
             this->moveLayer(layer, parent);
+            this->setCurrentItem(layer->qTreeWidgetItem);
             });
         optionList.append(option);
     }