TreeWidget, part 1

dlanguilib.visualdproj

@@ -89,7 +89,6 @@
   <resfile />
   <exefile>$(OutDir)\$(ProjectName).lib</exefile>
   <useStdLibPath>1</useStdLibPath>
-  <cRuntime>2</cRuntime>
   <additionalOptions />
   <preBuildCommand />
   <postBuildCommand />
@@ -184,7 +183,6 @@
   <resfile />
   <exefile>$(OutDir)\$(ProjectName).lib</exefile>
   <useStdLibPath>1</useStdLibPath>
-  <cRuntime>1</cRuntime>
   <additionalOptions />
   <preBuildCommand />
   <postBuildCommand />
@@ -337,8 +335,10 @@
      <File path="src\dlangui\widgets\lists.d" />
      <File path="src\dlangui\widgets\menu.d" />
      <File path="src\dlangui\widgets\popup.d" />
+     <File path="src\dlangui\widgets\scroll.d" />
      <File path="src\dlangui\widgets\styles.d" />
      <File path="src\dlangui\widgets\tabs.d" />
+     <File path="src\dlangui\widgets\tree.d" />
      <File path="src\dlangui\widgets\widget.d" />
     </Folder>
     <File path="src\dlangui\all.d" />

examples/example1/src/main.d

@@ -571,6 +571,13 @@ extern (C) int UIAppMain(string[] args) {
         grid.autoFit();
 		tabs.addTab(grid, "Grid"d);
 
+        //==========================================================================
+        // tree view example
+		TreeWidget tree = new TreeWidget("TREE1");
+		tree.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
+		tabs.addTab(tree, "Tree"d);
+
+
         //==========================================================================
 
         contentLayout.addChild(tabs);

src/dlangui/all.d

@@ -58,5 +58,6 @@ public import dlangui.widgets.tabs;
 public import dlangui.widgets.menu;
 public import dlangui.widgets.editors;
 public import dlangui.widgets.grid;
+public import dlangui.widgets.tree;
 public import dlangui.graphics.fonts;
 public import dlangui.core.i18n;

src/dlangui/widgets/grid.d

@@ -2,6 +2,7 @@ module dlangui.widgets.grid;
 
 import dlangui.widgets.widget;
 import dlangui.widgets.controls;
+import dlangui.widgets.scroll;
 import std.conv;
 
 /**
@@ -149,7 +150,7 @@ enum GridActions : int {
 	SelectDocumentEnd,
 }
 
-class GridWidgetBase : WidgetGroup, OnScrollHandler {
+class GridWidgetBase : ScrollWidget {
     /// column count (including header columns and fixed columns)
 	protected int _cols;
     /// row count (including header rows and fixed rows)
@@ -178,10 +179,6 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
     protected int _col;
     /// selected cell row
     protected int _row;
-    /// vertical scrollbar control
-	protected ScrollBar _vscrollbar;
-    /// horizontal scrollbar control
-	protected ScrollBar _hscrollbar;
     /// inner area, excluding additional controls like scrollbars
 	protected Rect _clientRect;
     /// when true, allows to select only whole row
@@ -378,19 +375,24 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
         return false;
     }
 
-    /// update scrollbar positions
+    /// update horizontal scrollbar widget position
-    protected void updateScrollBars() {
+    override protected void updateHScrollBar() {
-        calcScrollableAreaPos();
-        if (_hscrollbar) {
         _hscrollbar.setRange(0, _fullScrollableArea.width);
         _hscrollbar.pageSize(_visibleScrollableArea.width);
         _hscrollbar.position(_visibleScrollableArea.left - _fullScrollableArea.left);
     }
-        if (_vscrollbar) {
+
+    /// update verticat scrollbar widget position
+    override protected void updateVScrollBar() {
         _vscrollbar.setRange(0, _fullScrollableArea.height);
         _vscrollbar.pageSize(_visibleScrollableArea.height);
         _vscrollbar.position(_visibleScrollableArea.top - _fullScrollableArea.top);
     }
+
+    /// update scrollbar positions
+    override protected void updateScrollBars() {
+        calcScrollableAreaPos();
+        super.updateScrollBars();
     }
 
     /// column by X, ignoring scroll position
@@ -455,9 +457,8 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
         return oldx != _scrollCol || oldy != _scrollRow;
     }
 
-    /// handle scroll event
+    /// process horizontal scrollbar event
-    override bool onScrollEvent(AbstractSlider source, ScrollEvent event) {
+    override bool onHScroll(ScrollEvent event) {
-        if (source.compareId("hscrollbar")) {
         if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) {
             int col = colByAbsoluteX(event.position + _fullScrollableArea.left);
             scrollTo(col, _scrollRow + _headerRows + _fixedRows);
@@ -471,7 +472,10 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
             handleAction(new Action(GridActions.ScrollRight));
         }
         return true;
-        } else if (source.compareId("vscrollbar")) {
+    }
+
+    /// process vertical scrollbar event
+    override bool onVScroll(ScrollEvent event) {
         if (event.action == ScrollAction.SliderMoved || event.action == ScrollAction.SliderReleased) {
             int row = rowByAbsoluteY(event.position + _fullScrollableArea.top);
             scrollTo(_scrollCol + _headerCols + _fixedCols, row);
@@ -486,8 +490,6 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
         }
         return true;
     }
-        return true;
-    }
 
     /// ensure that cell is visible (scroll if necessary)
     void makeCellVisible(int col, int row) {
@@ -1051,12 +1053,6 @@ class GridWidgetBase : WidgetGroup, OnScrollHandler {
 
 	this(string ID = null) {
 		super(ID);
-		_vscrollbar = new ScrollBar("vscrollbar", Orientation.Vertical);
-		_hscrollbar = new ScrollBar("hscrollbar", Orientation.Horizontal);
-        _hscrollbar.onScrollEventListener = this;
-        _vscrollbar.onScrollEventListener = this;
-		addChild(_vscrollbar);
-		addChild(_hscrollbar);
         _headerCols = 1;
         _headerRows = 1;
         _defRowHeight = 20;

src/dlangui/widgets/scroll.d

@@ -0,0 +1,64 @@
+module dlangui.widgets.scroll;
+
+import dlangui.widgets.widget;
+import dlangui.widgets.controls;
+import std.conv;
+
+class ScrollWidget :  WidgetGroup, OnScrollHandler {
+    /// vertical scrollbar control
+	protected ScrollBar _vscrollbar;
+    /// horizontal scrollbar control
+	protected ScrollBar _hscrollbar;
+
+	this(string ID = null) {
+		super(ID);
+        _vscrollbar = new ScrollBar("vscrollbar", Orientation.Vertical);
+        _hscrollbar = new ScrollBar("hscrollbar", Orientation.Horizontal);
+        _hscrollbar.onScrollEventListener = this;
+        _vscrollbar.onScrollEventListener = this;
+        addChild(_vscrollbar);
+        addChild(_hscrollbar);
+    }
+
+    /// process horizontal scrollbar event
+    bool onHScroll(ScrollEvent event) {
+        return true;
+    }
+
+    /// process vertical scrollbar event
+    bool onVScroll(ScrollEvent event) {
+        return true;
+    }
+
+    /// handle scroll event
+    override bool onScrollEvent(AbstractSlider source, ScrollEvent event) {
+        if (source.compareId("hscrollbar")) {
+            return onHScroll(event);
+        } else if (source.compareId("vscrollbar")) {
+            return onVScroll(event);
+        }
+        return true;
+    }
+
+    /// update horizontal scrollbar widget position
+    protected void updateHScrollBar() {
+        // override it
+    }
+
+    /// update verticat scrollbar widget position
+    protected void updateVScrollBar() {
+        // override it
+    }
+
+    /// update scrollbar positions
+    protected void updateScrollBars() {
+        if (_hscrollbar) {
+            updateHScrollBar();
+        }
+        if (_vscrollbar) {
+            updateVScrollBar();
+        }
+    }
+
+
+}

src/dlangui/widgets/tree.d

@@ -0,0 +1,51 @@
+module dlangui.widgets.tree;
+
+import dlangui.widgets.widget;
+import dlangui.widgets.controls;
+import dlangui.widgets.scroll;
+import std.conv;
+
+class TreeWidgetBase :  ScrollWidget {
+    /// vertical scrollbar control
+	protected ScrollBar _vscrollbar;
+    /// horizontal scrollbar control
+	protected ScrollBar _hscrollbar;
+
+	this(string ID = null) {
+		super(ID);
+        _vscrollbar = new ScrollBar("vscrollbar", Orientation.Vertical);
+        _hscrollbar = new ScrollBar("hscrollbar", Orientation.Horizontal);
+        _hscrollbar.onScrollEventListener = this;
+        _vscrollbar.onScrollEventListener = this;
+        addChild(_vscrollbar);
+        addChild(_hscrollbar);
+    }
+
+    /// process horizontal scrollbar event
+    override bool onHScroll(ScrollEvent event) {
+        return true;
+    }
+
+    /// process vertical scrollbar event
+    override bool onVScroll(ScrollEvent event) {
+        return true;
+    }
+
+    /// update horizontal scrollbar widget position
+    override protected void updateHScrollBar() {
+        // override it
+    }
+
+    /// update verticat scrollbar widget position
+    override protected void updateVScrollBar() {
+        // override it
+    }
+
+
+}
+
+class TreeWidget :  ScrollWidget {
+	this(string ID = null) {
+		super(ID);
+    }
+}