1 files changed, 53 insertions, 0 deletions
diff --git a/qtruby/rubylib/examples/qt-examples/chart/canvasview.rb b/qtruby/rubylib/examples/qt-examples/chart/canvasview.rb
new file mode 100644
index 00000000..416b0de7
--- /dev/null
+++ b/qtruby/rubylib/examples/qt-examples/chart/canvasview.rb
@@ -0,0 +1,53 @@
+class CanvasView < Qt::CanvasView
+
+    def initialize(canvas, elements, parent = nil, name = "canvas view", f = 0)
+        super(canvas, parent, name, f)
+        @elements = elements
+        @movingItem = nil
+    end
+    
+    def contentsContextMenuEvent( e )
+        parent().optionsMenu.exec( Qt::Cursor.pos() )
+    end
+    
+    
+    def viewportResizeEvent( e )
+        canvas().resize( e.size().width(), e.size().height() )
+        parent().drawElements()
+    end
+    
+    
+    def contentsMousePressEvent( e )
+        list = canvas().collisions( e.pos() )
+        list.each do |it|
+            if  it.rtti() == CanvasText::CANVAS_TEXT 
+                @movingItem = it
+                @pos = e.pos()
+                return
+            end
+        end
+        @movingItem = nil
+    end
+    
+    
+    def contentsMouseMoveEvent( e )
+        if @movingItem 
+            offset = e.pos() - @pos
+            @movingItem.moveBy( offset.x(), offset.y() )
+            @pos = e.pos()
+            form = parent()
+            form.changed = true
+            chartType = form.chartType()
+            item = @movingItem
+            i = item.index()
+    
+            @elements[i].setProX( chartType, item.x() / canvas().width() )
+            @elements[i].setProY( chartType, item.y() / canvas().height() )
+    
+            canvas().update()
+        end
+    end
+
+end
+
+