Implement component preview image decorator

application/application.pro

@@ -104,6 +104,8 @@ HEADERS += sources/component_list_model.h
 SOURCES += sources/component_list_model.cc
 HEADERS += sources/component_preview_grid_widget.h
 SOURCES += sources/component_preview_grid_widget.cc
+HEADERS += sources/component_preview_images_decorator.h
+SOURCES += sources/component_preview_images_decorator.cc
 HEADERS += sources/cut_face_preview.h
 SOURCES += sources/cut_face_preview.cc
 HEADERS += sources/dds_file.h

application/sources/component_list_model.cc

@@ -7,7 +7,7 @@ ComponentListModel::ComponentListModel(const Document *document, QObject *parent
     QAbstractListModel(parent),
     m_document(document)
 {
-    connect(m_document, &Document::componentPreviewImageChanged, [this](const dust3d::Uuid &componentId) {
+    connect(m_document, &Document::componentPreviewPixmapChanged, [this](const dust3d::Uuid &componentId) {
         // FIXME: dont refresh the whole layout
         emit this->layoutChanged();
     });

application/sources/component_preview_images_decorator.cc

@@ -0,0 +1,44 @@
+#include <dust3d/base/debug.h>
+#include <QPainter>
+#include "theme.h"
+#include "component_preview_images_decorator.h"
+
+ComponentPreviewImagesDecorator::ComponentPreviewImagesDecorator(std::unique_ptr<std::vector<PreviewInput>> previewInputs)
+{
+    m_previewInputs = std::move(previewInputs);
+}
+
+std::unique_ptr<std::unordered_map<dust3d::Uuid, std::unique_ptr<QImage>>> ComponentPreviewImagesDecorator::takeResultImages()
+{
+    return std::move(m_resultImages);
+}
+
+void ComponentPreviewImagesDecorator::decorate()
+{
+    if (nullptr == m_previewInputs)
+        return;
+
+    m_resultImages = std::make_unique<std::unordered_map<dust3d::Uuid, std::unique_ptr<QImage>>>();
+
+    for (auto &it: *m_previewInputs) {
+        if (it.isDirectory) {
+            QPainter painter(it.image.get());
+            painter.setRenderHints(QPainter::Antialiasing);
+            QPolygonF polygon;
+            polygon << QPointF(it.image->width() / 4, 0.0) << QPointF(it.image->width() / 2.5, 0.0);
+            polygon << QPointF(0.0, it.image->height() / 2.5) << QPointF(0.0, it.image->height() / 4);
+            QPainterPath painterPath;
+            painterPath.addPolygon(polygon);
+            painter.setBrush(Theme::white);
+            painter.setPen(Qt::NoPen);
+            painter.drawPath(painterPath);
+        }
+        m_resultImages->emplace(it.id, std::move(it.image));
+    }
+}
+
+void ComponentPreviewImagesDecorator::process()
+{
+    decorate();
+    emit finished();
+}

application/sources/component_preview_images_decorator.h

@@ -0,0 +1,32 @@
+#ifndef DUST3D_APPLICATION_COMPONENT_PREVIEW_IMAGES_DECORATOR_H_
+#define DUST3D_APPLICATION_COMPONENT_PREVIEW_IMAGES_DECORATOR_H_
+
+#include <memory>
+#include <unordered_map>
+#include <dust3d/base/uuid.h>
+#include <QImage>
+
+class ComponentPreviewImagesDecorator: public QObject
+{
+    Q_OBJECT
+public:
+    struct PreviewInput
+    {
+        dust3d::Uuid id;
+        std::unique_ptr<QImage> image;
+        bool isDirectory = false;
+    };
+
+    ComponentPreviewImagesDecorator(std::unique_ptr<std::vector<PreviewInput>> previewInputs);
+    std::unique_ptr<std::unordered_map<dust3d::Uuid, std::unique_ptr<QImage>>> takeResultImages();
+signals:
+    void finished();
+public slots:
+    void process();
+private:
+    std::unique_ptr<std::vector<PreviewInput>> m_previewInputs;
+    std::unique_ptr<std::unordered_map<dust3d::Uuid, std::unique_ptr<QImage>>> m_resultImages;
+    void decorate();
+};
+
+#endif

application/sources/document_window.cc

@@ -22,6 +22,7 @@
 #include <QFormLayout>
 #include <QTextBrowser>
 #include <QMimeData>
+#include <QPixmap>
 #include <dust3d/base/ds3_file.h>
 #include <dust3d/base/snapshot.h>
 #include <dust3d/base/snapshot_xml.h>
@@ -1197,9 +1198,10 @@ void DocumentWindow::generateComponentPreviewImages()
     QThread *thread = new QThread;
     
     m_componentPreviewImagesGenerator = new MeshPreviewImagesGenerator(new ModelOffscreenRender(m_modelRenderWidget->format()));
-    for (const auto &component: m_document->componentMap) {
+    for (auto &component: m_document->componentMap) {
         if (!component.second.isPreviewMeshObsolete)
             continue;
+        component.second.isPreviewMeshObsolete = false;
         m_componentPreviewImagesGenerator->addInput(component.first, std::unique_ptr<ModelMesh>(component.second.takePreviewMesh()));
     }
     m_componentPreviewImagesGenerator->moveToThread(thread);
@@ -1216,10 +1218,12 @@ void DocumentWindow::componentPreviewImagesReady()
     componentImages.reset(m_componentPreviewImagesGenerator->takeImages());
     if (nullptr != componentImages) {
         for (const auto &it: *componentImages) {
-            m_document->setComponentPreviewImage(it.first, it.second);
+            m_document->setComponentPreviewImage(it.first, std::make_unique<QImage>(std::move(it.second)));
         }
     }
 
+    decorateComponentPreviewImages();
+    
     delete m_componentPreviewImagesGenerator;
     m_componentPreviewImagesGenerator = nullptr;
     
@@ -1227,6 +1231,56 @@ void DocumentWindow::componentPreviewImagesReady()
         generateComponentPreviewImages();
 }
 
+void DocumentWindow::decorateComponentPreviewImages()
+{
+    if (nullptr != m_componentPreviewImagesDecorator) {
+        m_isComponentPreviewImageDecorationsObsolete = true;
+        return;
+    }
+    
+    m_isComponentPreviewImageDecorationsObsolete = false;
+     
+    QThread *thread = new QThread;
+    
+    auto previewInputs = std::make_unique<std::vector<ComponentPreviewImagesDecorator::PreviewInput>>();
+    for (auto &component: m_document->componentMap) {
+        if (!component.second.isPreviewImageDecorationObsolete)
+            continue;
+        component.second.isPreviewImageDecorationObsolete = false;
+        if (nullptr == component.second.previewImage)
+            continue;
+        previewInputs->emplace_back(ComponentPreviewImagesDecorator::PreviewInput {
+            component.first, 
+            std::make_unique<QImage>(*component.second.previewImage),
+            !component.second.childrenIds.empty()
+        });
+    }
+    m_componentPreviewImagesDecorator = std::make_unique<ComponentPreviewImagesDecorator>(std::move(previewInputs));
+    m_componentPreviewImagesDecorator->moveToThread(thread);
+    connect(thread, &QThread::started, m_componentPreviewImagesDecorator.get(), &ComponentPreviewImagesDecorator::process);
+    connect(m_componentPreviewImagesDecorator.get(), &ComponentPreviewImagesDecorator::finished, this, &DocumentWindow::componentPreviewImageDecorationsReady);
+    connect(m_componentPreviewImagesDecorator.get(), &ComponentPreviewImagesDecorator::finished, thread, &QThread::quit);
+    connect(thread, &QThread::finished, thread, &QThread::deleteLater);
+    thread->start();
+}
+
+void DocumentWindow::componentPreviewImageDecorationsReady()
+{
+    auto resultImages = m_componentPreviewImagesDecorator->takeResultImages();
+    if (nullptr != resultImages) {
+        for (auto &it: *resultImages) {
+            if (nullptr == it.second)
+                continue;
+            m_document->setComponentPreviewPixmap(it.first, QPixmap::fromImage(*it.second));
+        }
+    }
+
+    m_componentPreviewImagesDecorator.reset();
+    
+    if (m_isComponentPreviewImageDecorationsObsolete)
+        decorateComponentPreviewImages();
+}
+
 ModelWidget *DocumentWindow::modelWidget()
 {
     return m_modelRenderWidget;

application/sources/document_window.h

@@ -1,6 +1,7 @@
 #ifndef DUST3D_APPLICATION_DOCUMENT_WINDOW_H_
 #define DUST3D_APPLICATION_DOCUMENT_WINDOW_H_
 
+#include <memory>
 #include <QMainWindow>
 #include <QShowEvent>
 #include <QPushButton>
@@ -14,6 +15,7 @@
 #include "model_widget.h"
 #include "graphics_container_widget.h"
 #include "mesh_preview_images_generator.h"
+#include "component_preview_images_decorator.h"
 
 class Document;
 class SkeletonGraphicsWidget;
@@ -82,6 +84,8 @@ public slots:
     void toggleRotation();
     void generateComponentPreviewImages();
     void componentPreviewImagesReady();
+    void decorateComponentPreviewImages();
+    void componentPreviewImageDecorationsReady();
     void updateInprogressIndicator();
     void openRecentFile();
     void updateRecentFileActions();
@@ -158,6 +162,9 @@ private:
     MeshPreviewImagesGenerator *m_componentPreviewImagesGenerator = nullptr;
     bool m_isComponentPreviewImagesObsolete = false;
 
+    std::unique_ptr<ComponentPreviewImagesDecorator> m_componentPreviewImagesDecorator;
+    bool m_isComponentPreviewImageDecorationsObsolete = false;
+    
     PartManageWidget *m_partManageWidget = nullptr;
     
     SpinnableToolbarIcon *m_inprogressIndicator = nullptr;

application/sources/skeleton_document.cc

@@ -1272,14 +1272,22 @@ void SkeletonDocument::setRadiusLockState(bool locked)
     emit radiusLockStateChanged();
 }
 
-void SkeletonDocument::setComponentPreviewImage(const dust3d::Uuid &componentId, const QImage &image)
+void SkeletonDocument::setComponentPreviewImage(const dust3d::Uuid &componentId, std::unique_ptr<QImage> image)
 {
     SkeletonComponent *component = (SkeletonComponent *)findComponent(componentId);
     if (nullptr == component)
         return;
-    component->isPreviewMeshObsolete = false;
-    component->previewPixmap = QPixmap::fromImage(image);
-    emit componentPreviewImageChanged(componentId);
+    component->isPreviewImageDecorationObsolete = true;
+    component->previewImage = std::move(image);
+}
+
+void SkeletonDocument::setComponentPreviewPixmap(const dust3d::Uuid &componentId, const QPixmap &pixmap)
+{
+    SkeletonComponent *component = (SkeletonComponent *)findComponent(componentId);
+    if (nullptr == component)
+        return;
+    component->previewPixmap = pixmap;
+    emit componentPreviewPixmapChanged(componentId);
 }
 
 void SkeletonDocument::setComponentPreviewMesh(const dust3d::Uuid &componentId, std::unique_ptr<ModelMesh> mesh)

application/sources/skeleton_document.h

@@ -427,6 +427,8 @@ public:
     bool dirty = true;
     std::vector<dust3d::Uuid> childrenIds;
     bool isPreviewMeshObsolete = false;
+    std::unique_ptr<QImage> previewImage;
+    bool isPreviewImageDecorationObsolete = false;
     QPixmap previewPixmap;
     QString linkData() const
     {
@@ -547,7 +549,7 @@ signals:
     void componentAdded(dust3d::Uuid componentId);
     void componentExpandStateChanged(dust3d::Uuid componentId);
     void componentPreviewMeshChanged(const dust3d::Uuid &componentId);
-    void componentPreviewImageChanged(const dust3d::Uuid &componentId);
+    void componentPreviewPixmapChanged(const dust3d::Uuid &componentId);
     void nodeRemoved(dust3d::Uuid nodeId);
     void edgeRemoved(dust3d::Uuid edgeId);
     void nodeRadiusChanged(dust3d::Uuid nodeId);
@@ -586,6 +588,7 @@ public:
     void collectComponentDescendantParts(dust3d::Uuid componentId, std::vector<dust3d::Uuid> &partIds) const;
     void collectComponentDescendantComponents(dust3d::Uuid componentId, std::vector<dust3d::Uuid> &componentIds) const;
     void setComponentPreviewMesh(const dust3d::Uuid &componentId, std::unique_ptr<ModelMesh> mesh);
+    void setComponentPreviewImage(const dust3d::Uuid &componentId, std::unique_ptr<QImage> image);
     void resetDirtyFlags();
     void markAllDirty();
     
@@ -691,7 +694,7 @@ public slots:
     void showDescendantComponents(dust3d::Uuid componentId);
     void lockDescendantComponents(dust3d::Uuid componentId);
     void unlockDescendantComponents(dust3d::Uuid componentId);
-    void setComponentPreviewImage(const dust3d::Uuid &componentId, const QImage &image);
+    void setComponentPreviewPixmap(const dust3d::Uuid &componentId, const QPixmap &pixmap);
     void setPartLockState(dust3d::Uuid partId, bool locked);
     void setPartVisibleState(dust3d::Uuid partId, bool visible);
     void setPartDisableState(dust3d::Uuid partId, bool disabled);