Clicking on a prefab will make it the current selection for painting

forms/mainwindow.ui

@@ -1271,8 +1271,18 @@
                     <layout class="QVBoxLayout" name="verticalLayout_3">
                      <item>
                       <widget class="QPushButton" name="pushButton">
+                       <property name="sizePolicy">
+                        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+                         <horstretch>0</horstretch>
+                         <verstretch>0</verstretch>
+                        </sizepolicy>
+                       </property>
                        <property name="text">
-                        <string>Create New Prefab from Current Selection</string>
+                        <string>Create from Selection</string>
+                       </property>
+                       <property name="icon">
+                        <iconset resource="../resources/images.qrc">
+                         <normaloff>:/icons/add.ico</normaloff>:/icons/add.ico</iconset>
                        </property>
                        <property name="autoDefault">
                         <bool>false</bool>
@@ -1293,6 +1303,9 @@
                        <layout class="QVBoxLayout" name="verticalLayout_15">
                         <item>
                          <widget class="QScrollArea" name="scrollArea">
+                          <property name="frameShape">
+                           <enum>QFrame::NoFrame</enum>
+                          </property>
                           <property name="widgetResizable">
                            <bool>true</bool>
                           </property>
@@ -1301,11 +1314,23 @@
                             <rect>
                              <x>0</x>
                              <y>0</y>
-                             <width>396</width>
+                             <width>398</width>
-                             <height>630</height>
+                             <height>631</height>
                             </rect>
                            </property>
                            <layout class="QVBoxLayout" name="verticalLayout_14">
+                            <property name="leftMargin">
+                             <number>0</number>
+                            </property>
+                            <property name="topMargin">
+                             <number>0</number>
+                            </property>
+                            <property name="rightMargin">
+                             <number>0</number>
+                            </property>
+                            <property name="bottomMargin">
+                             <number>0</number>
+                            </property>
                             <item>
                              <widget class="QLabel" name="label_prefabHelp">
                               <property name="text">

forms/prefabframe.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>400</width>
-    <height>149</height>
+    <height>262</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -26,7 +26,7 @@
    <string>Frame</string>
   </property>
   <property name="frameShape">
-   <enum>QFrame::Panel</enum>
+   <enum>QFrame::Box</enum>
   </property>
   <layout class="QHBoxLayout" name="horizontalLayout">
    <property name="sizeConstraint">
@@ -34,45 +34,100 @@
    </property>
    <item>
     <layout class="QVBoxLayout" name="verticalLayout">
+     <property name="spacing">
+      <number>0</number>
+     </property>
      <property name="sizeConstraint">
       <enum>QLayout::SetMinimumSize</enum>
      </property>
      <item>
-      <widget class="QLabel" name="label_Name">
+      <widget class="QFrame" name="frame">
        <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
+        <sizepolicy hsizetype="Minimum" vsizetype="Preferred">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
-       <property name="text">
+       <property name="frameShape">
-        <string/>
+        <enum>QFrame::NoFrame</enum>
        </property>
+       <property name="frameShadow">
+        <enum>QFrame::Raised</enum>
+       </property>
+       <layout class="QHBoxLayout" name="horizontalLayout_3">
+        <property name="spacing">
+         <number>6</number>
+        </property>
+        <property name="leftMargin">
+         <number>0</number>
+        </property>
+        <property name="topMargin">
+         <number>6</number>
+        </property>
+        <property name="rightMargin">
+         <number>9</number>
+        </property>
+        <property name="bottomMargin">
+         <number>6</number>
+        </property>
+        <item>
+         <widget class="QPushButton" name="pushButton">
+          <property name="text">
+           <string/>
+          </property>
+          <property name="icon">
+           <iconset resource="../resources/images.qrc">
+            <normaloff>:/icons/delete.ico</normaloff>:/icons/delete.ico</iconset>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLabel" name="label_Name">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Preferred" vsizetype="Minimum">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="text">
+           <string/>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <spacer name="horizontalSpacer_2">
+          <property name="orientation">
+           <enum>Qt::Horizontal</enum>
+          </property>
+          <property name="sizeHint" stdset="0">
+           <size>
+            <width>40</width>
+            <height>20</height>
+           </size>
+          </property>
+         </spacer>
+        </item>
+       </layout>
       </widget>
      </item>
      <item>
-      <widget class="QGraphicsView" name="graphicsView_Prefab">
+      <widget class="ClickableGraphicsView" name="graphicsView_Prefab">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Expanding" vsizetype="Minimum">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
+       <property name="autoFillBackground">
+        <bool>false</bool>
+       </property>
+       <property name="styleSheet">
+        <string notr="true">background-color: transparent</string>
+       </property>
       </widget>
      </item>
     </layout>
    </item>
-   <item>
-    <widget class="QPushButton" name="pushButton">
-     <property name="text">
-      <string/>
-     </property>
-     <property name="icon">
-      <iconset resource="../resources/images.qrc">
-       <normaloff>:/icons/delete.ico</normaloff>:/icons/delete.ico</iconset>
-     </property>
-    </widget>
-   </item>
    <item>
     <spacer name="horizontalSpacer">
      <property name="orientation">
@@ -88,6 +143,13 @@
    </item>
   </layout>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>ClickableGraphicsView</class>
+   <extends>QGraphicsView</extends>
+   <header>graphicsview.h</header>
+  </customwidget>
+ </customwidgets>
  <resources>
   <include location="../resources/images.qrc"/>
  </resources>

include/ui/graphicsview.h

@@ -4,6 +4,23 @@
 #include <QGraphicsView>
 #include <QMouseEvent>
 
+class ClickableGraphicsView : public QGraphicsView
+{
+    Q_OBJECT
+public:
+    ClickableGraphicsView() : QGraphicsView() {}
+    ClickableGraphicsView(QWidget *parent) : QGraphicsView(parent) {}
+
+public:
+    void mousePressEvent(QMouseEvent *event) {
+        QGraphicsView::mousePressEvent(event);
+        emit this->clicked();
+    }
+
+signals:
+    void clicked();
+};
+
 class Editor;
 
 class GraphicsView : public QGraphicsView

include/ui/metatileselector.h

@@ -46,6 +46,7 @@ public:
     bool selectFromMap(uint16_t metatileId, uint16_t collision, uint16_t elevation);
     void setTilesets(Tileset*, Tileset*);
     MetatileSelection getMetatileSelection();
+    void setDirectSelection(MetatileSelection selection);
     void setExternalSelection(int, int, QList<uint16_t>, QList<QPair<uint16_t, uint16_t>>);
     QPoint getMetatileIdCoordsOnWidget(uint16_t);
     void setMap(Map*);

include/ui/prefab.h

@@ -18,7 +18,7 @@ struct PrefabItem
 class Prefab
 {
 public:
-    void initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map);
+    void initPrefabUI(MetatileSelector *selector, QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map);
 
 private:
     QList<PrefabItem> items;

src/mainwindow.cpp

@@ -554,6 +554,7 @@ bool MainWindow::openProject(QString dir) {
 
     if (success) {
         prefab.initPrefabUI(
+                    editor->metatile_selector_item,
                     ui->scrollAreaWidgetContents_Prefabs,
                     ui->label_prefabHelp,
                     editor->ui->comboBox_PrimaryTileset->currentText(),

src/ui/currentselectedmetatilespixmapitem.cpp

@@ -6,22 +6,25 @@ QPixmap drawMetatileSelection(MetatileSelection selection, Map *map) {
     int width = selection.dimensions.x() * 16;
     int height = selection.dimensions.y() * 16;
     QImage image(width, height, QImage::Format_RGBA8888);
+    image.fill(QColor(0, 0, 0, 0));
     QPainter painter(&image);
 
     for (int i = 0; i < selection.dimensions.x(); i++) {
         for (int j = 0; j < selection.dimensions.y(); j++) {
             int x = i * 16;
             int y = j * 16;
+            QPoint metatile_origin = QPoint(x, y);
             int index = j * selection.dimensions.x() + i;
             MetatileSelectionItem item = selection.metatileItems.at(index);
-            QImage metatile_image = getMetatileImage(
+            if (item.enabled) {
-                        item.metatileId,
+                QImage metatile_image = getMetatileImage(
-                        map->layout->tileset_primary,
+                            item.metatileId,
-                        map->layout->tileset_secondary,
+                            map->layout->tileset_primary,
-                        map->metatileLayerOrder,
+                            map->layout->tileset_secondary,
-                        map->metatileLayerOpacity);
+                            map->metatileLayerOrder,
-            QPoint metatile_origin = QPoint(x, y);
+                            map->metatileLayerOpacity);
-            painter.drawImage(metatile_origin, metatile_image);
+                painter.drawImage(metatile_origin, metatile_image);
+            }
         }
     }
 

src/ui/mappixmapitem.cpp

@@ -127,6 +127,8 @@ void MapPixmapItem::paintNormal(int x, int y, bool fromScriptCall) {
         if (map->getBlock(actualX, actualY, &block)) {
             int index = j * selection.dimensions.x() + i;
             MetatileSelectionItem item = selection.metatileItems.at(index);
+            if (!item.enabled)
+                continue;
             block.metatileId = item.metatileId;
             if (selection.hasCollision && selection.collisionItems.length() == selection.metatileItems.length()) {
                 CollisionSelectionItem collisionItem = selection.collisionItems.at(index);

src/ui/metatileselector.cpp

@@ -95,6 +95,14 @@ void MetatileSelector::setExternalSelection(int width, int height, QList<uint16_
     emit selectedMetatilesChanged();
 }
 
+void MetatileSelector::setDirectSelection(MetatileSelection selection) {
+    this->externalSelection = false;
+    this->externalSelectedMetatiles.clear();
+    this->selection = selection;
+    this->draw();
+    emit selectedMetatilesChanged();
+}
+
 bool MetatileSelector::shouldAcceptEvent(QGraphicsSceneMouseEvent *event) {
     QPoint pos = this->getCellPos(event->pos());
     return Tileset::metatileIsValid(getMetatileId(pos.x(), pos.y()), this->primaryTileset, this->secondaryTileset);

src/ui/prefab.cpp

@@ -86,7 +86,7 @@ QList<PrefabItem> Prefab::getPrefabsForTilesets(QString primaryTileset, QString
     return filteredPrefabs;
 }
 
-void Prefab::initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map) {
+void Prefab::initPrefabUI(MetatileSelector *selector, QWidget *prefabWidget, QLabel *emptyPrefabLabel, QString primaryTileset, QString secondaryTileset, Map *map) {
     this->loadPrefabs();
     QList<PrefabItem> prefabs = this->getPrefabsForTilesets(primaryTileset, secondaryTileset);
     if (prefabs.isEmpty()) {
@@ -107,6 +107,9 @@ void Prefab::initPrefabUI(QWidget *prefabWidget, QLabel *emptyPrefabLabel, QStri
                                                      scene->itemsBoundingRect().height() + 2);
 
         prefabWidget->layout()->addWidget(frame);
+        QObject::connect(frame->ui->graphicsView_Prefab, &ClickableGraphicsView::clicked, [=](){
+            selector->setDirectSelection(item.selection);
+        });
     }
     auto spacer = new QSpacerItem(0, 0, QSizePolicy::Ignored, QSizePolicy::Expanding);
     prefabWidget->layout()->addItem(spacer);