diff --git a/main.cpp b/main.cpp
index e5a1290..3989797 100644
--- a/main.cpp
+++ b/main.cpp
@@ -28,6 +28,7 @@
 #include "model/placesmodel.h"
 #include "model/foldermodel.h"
 #include "model/pathbarmodel.h"
+#include "model/positioner.h"
 #include "widgets/rubberband.h"
 #include "widgets/itemviewadapter.h"
 #include "desktop/desktopsettings.h"
@@ -58,6 +59,7 @@ int main(int argc, char *argv[])
     qmlRegisterType<PlacesModel>(uri, 1, 0, "PlacesModel");
     qmlRegisterType<FolderModel>(uri, 1, 0, "FolderModel");
     qmlRegisterType<PathBarModel>(uri, 1, 0, "PathBarModel");
+    qmlRegisterType<Positioner>(uri, 1, 0, "Positioner");
     qmlRegisterType<RubberBand>(uri, 1, 0, "RubberBand");
     qmlRegisterType<ItemViewAdapter>(uri, 1, 0, "ItemViewAdapter");
     qmlRegisterType<DesktopSettings>(uri, 1, 0, "DesktopSettings");
diff --git a/model/foldermodel.cpp b/model/foldermodel.cpp
index 1b63781..6d7140f 100644
--- a/model/foldermodel.cpp
+++ b/model/foldermodel.cpp
@@ -144,15 +144,17 @@ QVariant FolderModel::data(const QModelIndex &index, int role) const
     case IconNameRole:
         return item.iconName();
     case ThumbnailRole: {
-        // Svg Image
-        if (item.mimetype() == "image/svg" ||
-                item.mimetype() == "image/svg+xml") {
-            return item.url();
-        }
+        if (item.isLocalFile()) {
+            // Svg Image
+            if (item.mimetype() == "image/svg" ||
+                    item.mimetype() == "image/svg+xml") {
+                return item.url();
+            }
 
-        // Support
-        if (isSupportThumbnails(item.mimetype())) {
-            return "image://thumbnailer/" + item.url().toString();
+            // Support
+            if (isSupportThumbnails(item.mimetype())) {
+                return "image://thumbnailer/" + item.url().toString();
+            }
         }
 
         return QVariant();
diff --git a/qml/FolderGridItem.qml b/qml/FolderGridItem.qml
index fa6967c..84f860a 100644
--- a/qml/FolderGridItem.qml
+++ b/qml/FolderGridItem.qml
@@ -81,7 +81,7 @@ Item {
                         anchors.centerIn: parent
                         width: Math.min(parent.width, _image.paintedWidth)
                         height: Math.min(parent.height, _image.paintedHeight)
-                        radius: Meui.Theme.smallRadius / 2
+                        radius: height * 0.1
                     }
                 }
             }
diff --git a/qml/FolderGridView.qml b/qml/FolderGridView.qml
index 82c1541..ef96610 100644
--- a/qml/FolderGridView.qml
+++ b/qml/FolderGridView.qml
@@ -14,6 +14,9 @@ GridView {
     property Item hoveredItem: null
     property Item pressedItem: null
 
+    property alias positions: positioner.positions
+    property alias positioner: positioner
+
     property int verticalDropHitscanOffset: 0
 
     property int pressX: -1
@@ -43,6 +46,50 @@ GridView {
 
     signal keyPress(var event)
 
+    function effectiveNavDirection(flow, layoutDirection, direction) {
+        if (direction === Qt.LeftArrow) {
+            if (flow === GridView.FlowLeftToRight) {
+                if (layoutDirection === Qt.LeftToRight) {
+                    return Qt.LeftArrow;
+                } else {
+                    return Qt.RightArrow;
+                }
+            } else {
+                if (layoutDirection === Qt.LeftToRight) {
+                    return Qt.UpArrow;
+                } else {
+                    return Qt.DownArrow;
+                }
+            }
+        } else if (direction === Qt.RightArrow) {
+            if (flow === GridView.FlowLeftToRight) {
+                if (layoutDirection === Qt.LeftToRight) {
+                    return Qt.RightArrow;
+                } else {
+                    return Qt.LeftArrow;
+                }
+            } else {
+                if (layoutDirection === Qt.LeftToRight) {
+                    return Qt.DownArrow;
+                } else {
+                    return Qt.UpArrow;
+                }
+            }
+        } else if (direction === Qt.UpArrow) {
+            if (flow === GridView.FlowLeftToRight) {
+                return Qt.UpArrow;
+            } else {
+                return Qt.LeftArrow;
+            }
+        } else if (direction === Qt.DownArrow) {
+            if (flow === GridView.FlowLeftToRight) {
+                return Qt.DownArrow;
+            } else {
+                return Qt.RightArrow
+            }
+        }
+    }
+
     function rename() {
         if (control.currentIndex != -1) {
             var renameAction = control.model.action("rename")
@@ -103,10 +150,42 @@ GridView {
     Keys.onEscapePressed: {
         if (!editor || !editor.targetItem) {
             previouslySelectedItemIndex = -1
-            folderModel.clearSelection()
+            dirModel.clearSelection()
             event.accepted = false
         }
     }
+    Keys.onUpPressed: {
+        var newIndex = positioner.nearestItem(currentIndex,
+                                              effectiveNavDirection(control.flow, control.effectiveLayoutDirection, Qt.UpArrow))
+        if (newIndex !== -1) {
+            currentIndex = newIndex
+            updateSelection(event.modifiers)
+        }
+    }
+    Keys.onDownPressed: {
+        var newIndex = positioner.nearestItem(currentIndex,
+                                              effectiveNavDirection(control.flow, control.effectiveLayoutDirection, Qt.DownArrow))
+        if (newIndex !== -1) {
+            currentIndex = newIndex
+            updateSelection(event.modifiers)
+        }
+    }
+    Keys.onLeftPressed: {
+        var newIndex = positioner.nearestItem(currentIndex,
+                                              effectiveNavDirection(control.flow, control.effectiveLayoutDirection, Qt.LeftArrow))
+        if (newIndex !== -1) {
+            currentIndex = newIndex;
+            updateSelection(event.modifiers)
+        }
+    }
+    Keys.onRightPressed: {
+        var newIndex = positioner.nearestItem(currentIndex,
+                                              effectiveNavDirection(control.flow, control.effectiveLayoutDirection, Qt.RightArrow))
+        if (newIndex !== -1) {
+            currentIndex = newIndex;
+            updateSelection(event.modifiers)
+        }
+    }
 
     cellHeight: {
         var iconHeight = iconSize + (Meui.Units.fontMetrics.height * 2) + Meui.Units.largeSpacing * 2
@@ -150,7 +229,32 @@ GridView {
         if (cachedRectangleSelection.length)
             control.currentIndex[0]
 
-        folderModel.updateSelection(cachedRectangleSelection, control.ctrlPressed)
+        dirModel.updateSelection(cachedRectangleSelection, control.ctrlPressed)
+    }
+
+    Positioner {
+        id: positioner
+        enabled: true
+        folderModel: dirModel
+        perStripe: Math.floor(((control.flow == GridView.FlowLeftToRight)
+            ? control.width : control.height) / ((control.flow == GridView.FlowLeftToRight)
+            ? control.cellWidth : control.cellHeight));
+    }
+
+    DropArea {
+        id: _dropArea
+        anchors.fill: parent
+
+        onDropped: {
+            var dropPos = mapToItem(control.contentItem, drop.x, drop.y)
+            var dropIndex = control.indexAt(drop.x, drop.y)
+            var dragPos = mapToItem(control.contentItem, control.dragX, control.dragY)
+            var dragIndex = control.indexAt(dragPos.x, dragPos.y)
+
+            if (control.dragX == -1 || dragIndex !== dropIndex) {
+
+            }
+        }
     }
 
     MouseArea {
@@ -182,38 +286,38 @@ GridView {
 
                 // Shift 处理, 选择区域
                 if (control.shiftPressed && control.currentIndex !== -1) {
-                    folderModel.setRangeSelected(control.anchorIndex, hoveredItem.index)
+                    dirModel.setRangeSelected(control.anchorIndex, hoveredItem.index)
                 } else {
                     // Ctrl 处理
-                    if (!control.ctrlPressed && !folderModel.isSelected(hoveredItem.index)) {
-                        folderModel.clearSelection()
+                    if (!control.ctrlPressed && !dirModel.isSelected(hoveredItem.index)) {
+                        dirModel.clearSelection()
                     }
 
                     // Item 选择
                     if (control.ctrlPressed) {
-                        folderModel.toggleSelected(hoveredItem.index)
+                        dirModel.toggleSelected(hoveredItem.index)
                     } else {
-                        folderModel.setSelected(hoveredItem.index)
+                        dirModel.setSelected(hoveredItem.index)
                     }
                 }
 
                 // 弹出 Item 菜单
                 if (mouse.buttons & Qt.RightButton) {
                     clearPressState()
-                    folderModel.openContextMenu(null, mouse.modifiers)
+                    dirModel.openContextMenu(null, mouse.modifiers)
                     mouse.accepted = true
                 }
             } else {
                 // 处理空白区域点击
                 if (!control.ctrlPressed) {
                     control.currentIndex = -1
-                    folderModel.clearSelection()
+                    dirModel.clearSelection()
                 }
 
                 // 弹出文件夹菜单
                 if (mouse.buttons & Qt.RightButton) {
                     clearPressState()
-                    folderModel.openContextMenu(null, mouse.modifiers)
+                    dirModel.openContextMenu(null, mouse.modifiers)
                     mouse.accepted = true
                 }
             }
@@ -277,11 +381,11 @@ GridView {
             }
 
             if (pressX != -1) {
-                if (pressedItem != null && folderModel.isSelected(pressedItem.index)) {
+                if (pressedItem != null && dirModel.isSelected(pressedItem.index)) {
                     control.dragX = mouse.x
                     control.dragY = mouse.y
                     control.verticalDropHitscanOffset = pressedItem.y + (pressedItem.height / 2)
-                    folderModel.dragSelected(mouse.x, mouse.y)
+                    dirModel.dragSelected(mouse.x, mouse.y)
                     control.dragX = -1
                     control.dragY = -1
                     clearPressState()
@@ -289,7 +393,7 @@ GridView {
                     if (control.editor && control.editor.targetItem)
                         return;
 
-                    folderModel.pinSelection()
+                    dirModel.pinSelection()
                     control.rubberBand = rubberBandObject.createObject(control.contentItem, {x: cPress.x, y: cPress.y})
                     control.interactive = false
                 }
@@ -300,13 +404,13 @@ GridView {
             clearPressState()
 
             if (mouse.buttons & Qt.RightButton) {
-                folderModel.openContextMenu(null, mouse.modifiers)
+                dirModel.openContextMenu(null, mouse.modifiers)
             }
         }
 
         onDoubleClicked: {
             if (mouse.button === Qt.LeftButton && control.pressedItem)
-                folderModel.openSelected()
+                dirModel.openSelected()
         }
 
         onReleased: pressCanceled()
@@ -337,7 +441,7 @@ GridView {
 
             control.interactive = true
             control.cachedRectangleSelection = null
-            folderModel.unpinSelection()
+            dirModel.unpinSelection()
         }
 
         clearPressState()
@@ -363,7 +467,7 @@ GridView {
                     break
                 }
 
-                if (folderModel.isBlank(index)) {
+                if (dirModel.isBlank(index)) {
                     continue
                 }
 
@@ -440,6 +544,18 @@ GridView {
         iconSize -= (iconSize * 0.1)
     }
 
+    function updateSelection(modifier) {
+        if (modifier & Qt.ShiftModifier) {
+            dirModel.setRangeSelected(anchorIndex, currentIndex)
+        } else {
+            dirModel.clearSelection()
+            dirModel.setSelected(currentIndex)
+            if (currentIndex == -1)
+                previouslySelectedItemIndex = -1
+            previouslySelectedItemIndex = currentIndex
+        }
+    }
+
     Component {
         id: editorComponent
 
@@ -463,7 +579,7 @@ GridView {
                     y = pos.y - Meui.Units.largeSpacing
                     text = targetItem.labelArea.text
                     targetItem.labelArea.visible = false
-                    _editor.select(0, folderModel.fileExtensionBoundary(targetItem.index))
+                    _editor.select(0, dirModel.fileExtensionBoundary(targetItem.index))
                     visible = true
                     control.interactive = false
                 } else {
@@ -500,7 +616,7 @@ GridView {
             function commit() {
                 if (targetItem) {
                     targetItem.labelArea.visible = true
-                    folderModel.rename(targetItem.index, text)
+                    dirModel.rename(targetItem.index, text)
                     control.currentIndex = targetItem.index
                     targetItem = null
 
diff --git a/qml/FolderListItem.qml b/qml/FolderListItem.qml
index 9690147..680c1f3 100644
--- a/qml/FolderListItem.qml
+++ b/qml/FolderListItem.qml
@@ -1,6 +1,7 @@
 import QtQuick 2.12
 import QtQuick.Controls 2.12
 import QtQuick.Layouts 1.12
+import QtGraphicalEffects 1.0
 import MeuiKit 1.0 as Meui
 
 Item {
@@ -78,6 +79,21 @@ Item {
                 fillMode: Image.PreserveAspectFit
                 asynchronous: true
                 smooth: false
+
+                layer.enabled: true
+                layer.effect: OpacityMask {
+                    maskSource: Item {
+                        width: _image.width
+                        height: _image.height
+
+                        Rectangle {
+                            anchors.centerIn: parent
+                            width: Math.min(parent.width, _image.paintedWidth)
+                            height: Math.min(parent.height, _image.paintedHeight)
+                            radius: height * 0.1
+                        }
+                    }
+                }
             }
         }
 
diff --git a/qml/FolderListView.qml b/qml/FolderListView.qml
index dcbdd53..c28b9b5 100644
--- a/qml/FolderListView.qml
+++ b/qml/FolderListView.qml
@@ -96,7 +96,7 @@ ListView {
     Keys.onEscapePressed: {
         if (!editor || !editor.targetItem) {
             previouslySelectedItemIndex = -1
-            folderModel.clearSelection()
+            dirModel.clearSelection()
             event.accepted = false
         }
     }
@@ -134,7 +134,7 @@ ListView {
         if (cachedRectangleSelection.length)
             control.currentIndex[0]
 
-        folderModel.updateSelection(cachedRectangleSelection, control.ctrlPressed)
+        dirModel.updateSelection(cachedRectangleSelection, control.ctrlPressed)
     }
 
     onContentXChanged: {
@@ -165,7 +165,7 @@ ListView {
 
         onDoubleClicked: {
             if (mouse.button === Qt.LeftButton && control.pressedItem)
-                folderModel.openSelected()
+                dirModel.openSelected()
         }
 
         onPressed: {
@@ -192,36 +192,36 @@ ListView {
                 if (!control.ctrlPressed) {
                     control.currentIndex = -1
                     control.previouslySelectedItemIndex = -1
-                    folderModel.clearSelection()
+                    dirModel.clearSelection()
                 }
 
                 if (mouse.buttons & Qt.RightButton) {
                     clearPressState()
-                    folderModel.openContextMenu(null, mouse.modifiers)
+                    dirModel.openContextMenu(null, mouse.modifiers)
                     mouse.accepted = true
                 }
             } else {
                 pressedItem = hoveredItem
 
                 if (control.shiftPressed && control.currentIndex !== -1) {
-                    folderModel.setRangeSelected(control.anchorIndex, hoveredItem.index)
+                    dirModel.setRangeSelected(control.anchorIndex, hoveredItem.index)
                 } else {
-                    if (!control.ctrlPressed && !folderModel.isSelected(hoveredItem.index)) {
+                    if (!control.ctrlPressed && !dirModel.isSelected(hoveredItem.index)) {
                         previouslySelectedItemIndex = -1
-                        folderModel.clearSelection()
+                        dirModel.clearSelection()
                     }
 
                     if (control.ctrlPressed)
-                        folderModel.toggleSelected(hoveredItem.index)
+                        dirModel.toggleSelected(hoveredItem.index)
                     else
-                        folderModel.setSelected(hoveredItem.index)
+                        dirModel.setSelected(hoveredItem.index)
                 }
 
                 control.currentIndex = hoveredItem.index
 
                 if (mouse.buttons & Qt.RightButton) {
                     clearPressState()
-                    folderModel.openContextMenu(null, mouse.modifiers)
+                    dirModel.openContextMenu(null, mouse.modifiers)
                     mouse.accepted = true
                 }
             }
@@ -289,11 +289,11 @@ ListView {
 
             // Drag
             if (pressX != -1) {
-                if (pressedItem != null && folderModel.isSelected(pressedItem.index)) {
+                if (pressedItem != null && dirModel.isSelected(pressedItem.index)) {
                     control.dragX = mouse.x
                     control.dragY = mouse.y
                     control.verticalDropHitscanOffset = pressedItem.y + (pressedItem.height / 2)
-                    folderModel.dragSelected(mouse.x, mouse.y)
+                    dirModel.dragSelected(mouse.x, mouse.y)
                     control.dragX = -1
                     control.dragY = -1
                     clearPressState()
@@ -301,7 +301,7 @@ ListView {
                     if (control.editor && control.editor.targetItem)
                         return;
 
-                    folderModel.pinSelection()
+                    dirModel.pinSelection()
                     control.rubberBand = rubberBandObject.createObject(control.contentItem, {x: cPress.x, y: cPress.y})
                     control.interactive = false
                 }
@@ -329,7 +329,7 @@ ListView {
 
             control.interactive = true
             control.cachedRectangleSelection = null
-            folderModel.unpinSelection()
+            dirModel.unpinSelection()
         }
 
         clearPressState()
@@ -354,10 +354,10 @@ ListView {
 
     function updateSelection(modifier) {
         if (modifier & Qt.ShiftModifier) {
-            folderModel.setRangeSelected(anchorIndex, currentIndex)
+            dirModel.setRangeSelected(anchorIndex, currentIndex)
         } else {
-            folderModel.clearSelection()
-            folderModel.setSelected(currentIndex)
+            dirModel.clearSelection()
+            dirModel.setSelected(currentIndex)
             if (currentIndex == -1)
                 previouslySelectedItemIndex = -1
             previouslySelectedItemIndex = currentIndex
@@ -386,7 +386,7 @@ ListView {
                     text = targetItem.labelArea.text
                     targetItem.labelArea.visible = false
                     targetItem.labelArea2.visible = false
-                    _editor.select(0, folderModel.fileExtensionBoundary(targetItem.index))
+                    _editor.select(0, dirModel.fileExtensionBoundary(targetItem.index))
                     visible = true
                     control.interactive = false
                 } else {
@@ -422,7 +422,7 @@ ListView {
                 if (targetItem) {
                     targetItem.labelArea.visible = true
                     targetItem.labelArea2.visible = true
-                    folderModel.rename(targetItem.index, text)
+                    dirModel.rename(targetItem.index, text)
                     control.currentIndex = targetItem.index
                     targetItem = null
 
diff --git a/qml/FolderPage.qml b/qml/FolderPage.qml
index 2510dd8..f631ca3 100644
--- a/qml/FolderPage.qml
+++ b/qml/FolderPage.qml
@@ -10,7 +10,7 @@ import "./Dialogs"
 Item {
     id: folderPage
 
-    property alias currentUrl: folderModel.url
+    property alias currentUrl: dirModel.url
     property Item currentView: _viewLoader.item
     property int statusBarHeight: 30
 
@@ -39,21 +39,22 @@ Item {
     }
 
     FolderModel {
-        id: folderModel
+        id: dirModel
         viewAdapter: viewAdapter
 
+
         Component.onCompleted: {
             if (arg)
-                folderModel.url = arg
+                dirModel.url = arg
             else
-                folderModel.url = folderModel.homePath()
+                dirModel.url = dirModel.homePath()
         }
     }
 
     ItemViewAdapter {
         id: viewAdapter
         adapterView: _viewLoader.item
-        adapterModel: folderModel
+        adapterModel: _viewLoader.item.positioner ? _viewLoader.item.positioner : dirModel
         adapterIconSize: 40
         adapterVisibleArea: Qt.rect(_viewLoader.item.contentX, _viewLoader.item.contentY,
                                     _viewLoader.item.contentWidth, _viewLoader.item.contentHeight)
@@ -90,7 +91,7 @@ Item {
     }
 
     Component.onCompleted: {
-        folderModel.requestRename.connect(rename)
+        dirModel.requestRename.connect(rename)
     }
 
     Component {
@@ -109,14 +110,14 @@ Item {
 
                 Label {
                     Layout.alignment: Qt.AlignLeft
-                    text: folderModel.count == 1 ? qsTr("%1 item").arg(folderModel.count)
-                                                 : qsTr("%1 items").arg(folderModel.count)
+                    text: dirModel.count == 1 ? qsTr("%1 item").arg(dirModel.count)
+                                                 : qsTr("%1 items").arg(dirModel.count)
                 }
 
                 Label {
                     Layout.alignment: Qt.AlignLeft
-                    text: qsTr("%1 selected").arg(folderModel.selectionCound)
-                    visible: folderModel.selectionCound >= 1
+                    text: qsTr("%1 selected").arg(dirModel.selectionCound)
+                    visible: dirModel.selectionCound >= 1
                 }
 
                 Item {
@@ -127,8 +128,8 @@ Item {
                     Layout.fillHeight: true
                     Layout.alignment: Qt.AlignRight
                     text: qsTr("Empty Trash")
-                    onClicked: folderModel.emptyTrash()
-                    visible: folderModel.url === "trash:/"
+                    onClicked: dirModel.emptyTrash()
+                    visible: dirModel.url === "trash:/"
                 }
             }
         }
@@ -139,7 +140,7 @@ Item {
 
         FolderGridView {
             id: _gridView
-            model: folderModel
+            model: dirModel
             delegate: FolderGridItem {}
 
             leftMargin: Meui.Units.largeSpacing
@@ -163,7 +164,7 @@ Item {
 
         FolderListView {
             id: _folderListView
-            model: folderModel
+            model: dirModel
 
             topMargin: Meui.Units.largeSpacing
             leftMargin: Meui.Units.largeSpacing
@@ -219,36 +220,36 @@ Item {
 
         function onKeyPress(event) {
             if (event.key === Qt.Key_Enter || event.key === Qt.Key_Return)
-                folderModel.openSelected()
+                dirModel.openSelected()
             else if (event.key === Qt.Key_C && event.modifiers & Qt.ControlModifier)
-                folderModel.copy()
+                dirModel.copy()
             else if (event.key === Qt.Key_X && event.modifiers & Qt.ControlModifier)
-                folderModel.cut()
+                dirModel.cut()
             else if (event.key === Qt.Key_V && event.modifiers & Qt.ControlModifier)
-                folderModel.paste()
+                dirModel.paste()
             else if (event.key === Qt.Key_F2)
-                folderModel.requestRename()
+                dirModel.requestRename()
             else if (event.key === Qt.Key_L && event.modifiers & Qt.ControlModifier)
                 folderPage.requestPathEditor()
             else if (event.key === Qt.Key_A && event.modifiers & Qt.ControlModifier)
-                folderModel.selectAll()
+                dirModel.selectAll()
             else if (event.key === Qt.Key_Backspace)
-                folderModel.up()
+                dirModel.up()
             else if (event.key === Qt.Key_Delete)
-                folderModel.keyDeletePress()
+                dirModel.keyDeletePress()
         }
     }
 
     function openUrl(url) {
-        folderModel.url = url
+        dirModel.url = url
         _viewLoader.item.forceActiveFocus()
     }
 
     function goBack() {
-        folderModel.goBack()
+        dirModel.goBack()
     }
 
     function goForward() {
-        folderModel.goForward()
+        dirModel.goForward()
     }
 }