spreadsheet

examples/spreadsheet/src/dlangui/widgets/spreadsheet.d

@@ -60,7 +60,7 @@ class SpreadSheetView : StringGridWidget {
     }
 }
 
-class SpreadSheetWidget : WidgetGroupDefaultDrawing, OnScrollHandler {
+class SpreadSheetWidget : WidgetGroupDefaultDrawing, OnScrollHandler, CellSelectedHandler, CellActivatedHandler, ViewScrolledHandler {
 
     SheetEditControl _editControl;
     SheetTabs _tabs;
@@ -106,10 +106,10 @@ class SpreadSheetWidget : WidgetGroupDefaultDrawing, OnScrollHandler {
         _viewBottomLeft = new SpreadSheetView("sheetViewBottomLeft");
         _viewBottomRight = new SpreadSheetView("sheetViewBottomRight");
 
-        _viewTopRight.headerCols = 0;
+        _viewTopRight.setColWidth(0, 0);
-        _viewBottomLeft.headerRows = 0;
+        _viewBottomLeft.setRowHeight(0, 0);
-        _viewBottomRight.headerCols = 0;
+        _viewBottomRight.setRowHeight(0, 0);
-        _viewBottomRight.headerRows = 0;
+        _viewBottomRight.setColWidth(0, 0);
 
         _views[0] = _viewTopLeft;
         _views[1] = _viewTopRight;
@@ -132,6 +132,11 @@ class SpreadSheetWidget : WidgetGroupDefaultDrawing, OnScrollHandler {
 
         foreach(sb; _scrollbars)
             sb.onScrollEventListener = this;
+        foreach(view; _views) {
+            view.cellSelected = this;
+            view.cellActivated = this;
+            view.viewScrolled = this;
+        }
     }
 
 	/// Measure widget according to desired width and height constraints. (Step 1 of two phase layout).
@@ -198,4 +203,21 @@ class SpreadSheetWidget : WidgetGroupDefaultDrawing, OnScrollHandler {
         }
         return true;
     }
+
+    /// Callback for handling of cell selection
+    void onCellSelected(GridWidgetBase source, int col, int row) {
+        foreach(view; _views) {
+            if (source != view)
+                view.selectCell(col + view.headerCols, row + view.headerRows, false, source, false);
+        }
+    }
+
+    /// Callback for handling of cell double click or Enter key press
+    void onCellActivated(GridWidgetBase source, int col, int row) {
+    }
+
+    /// Callback for handling of view scroll (top left visible cell change)
+    void onViewScrolled(GridWidgetBase source, int col, int row) {
+    }
+
 }

src/dlangui/widgets/grid.d

@@ -225,6 +225,11 @@ interface CellActivatedHandler {
     void onCellActivated(GridWidgetBase source, int col, int row);
 }
 
+/// Callback for handling of view scroll (top left visible cell change)
+interface ViewScrolledHandler {
+    void onViewScrolled(GridWidgetBase source, int col, int row);
+}
+
 /// Abstract grid widget
 class GridWidgetBase : ScrollWidgetBase {
     /// Callback to handle selection change
@@ -237,6 +242,9 @@ class GridWidgetBase : ScrollWidgetBase {
     /// cellActivated signal alias for backward compatibility; will be deprecated in future
     alias onCellActivated = cellActivated;
 
+    /// Callback for handling of view scroll (top left visible cell change)
+    Listener!ViewScrolledHandler viewScrolled;
+
     protected CustomGridCellAdapter _customCellAdapter;
 
     /// Get adapter to override drawing of some particular cells
@@ -414,6 +422,10 @@ class GridWidgetBase : ScrollWidgetBase {
         return _colWidths[x];
     }
 
+    void setColWidth(int x, int w) {
+        _colWidths[x] = w;
+    }
+
     /// returns row height (index includes col/row headers, if any); returns 0 for riws hidden by scroll at the top
     int rowHeight(int y) {
         if (y >= _headerRows + _fixedRows && y < _headerRows + _fixedRows + _scrollRow)
@@ -421,6 +433,10 @@ class GridWidgetBase : ScrollWidgetBase {
         return _rowHeights[y];
     }
 
+    void setRowHeight(int y, int w) {
+        _rowHeights[y] = w;
+    }
+
     /// returns cell rectangle relative to client area; row 0 is col headers row; col 0 is row headers column
     Rect cellRect(int x, int y) {
         Rect rc;
@@ -623,7 +639,9 @@ class GridWidgetBase : ScrollWidgetBase {
     }
 
     /// move selection to specified cell
-    bool selectCell(int col, int row, bool makeVisible = true) {
+    bool selectCell(int col, int row, bool makeVisible = true, GridWidgetBase source = null, bool needNotification = true) {
+        if (source is null)
+            source = this;
         if (_col == col && _row == row)
             return false; // same position
         if (col < _headerCols || row < _headerRows || col >= _cols || row >= _rows)
@@ -634,8 +652,8 @@ class GridWidgetBase : ScrollWidgetBase {
         calcScrollableAreaPos();
         if (makeVisible)
             makeCellVisible(_col, _row);
-        if (onCellSelected.assigned)
+        if (needNotification && onCellSelected.assigned)
-            onCellSelected(this, _col - _headerCols, _row - _headerRows);
+            onCellSelected(source, _col - _headerCols, _row - _headerRows);
         return true;
     }