wxPython Merge #2 of 2.4 branch --> HEAD (branch tag: wxPy_2_4_merge_2)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21593 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/GridDragAndDrop.py

@@ -0,0 +1,104 @@
+"""
+Example showing how to make a grid a drop target for files.
+
+"""
+
+from wxPython.wx import *
+from wxPython.grid import *
+
+#---------------------------------------------------------------------------
+# Set VIRTUAL to 1 to use a virtual grid
+
+VIRTUAL = 1
+
+class GridFileDropTarget(wxFileDropTarget):
+    def __init__(self, grid):
+        wxFileDropTarget.__init__(self)
+        self.grid = grid
+
+    def OnDropFiles(self, x, y, filenames):
+        # the x,y coordinates here are Unscrolled coordinates.  They must be changed
+        # to scrolled coordinates.
+        x, y = self.grid.CalcUnscrolledPosition(x, y)
+
+        # now we need to get the row and column from the grid
+        # but we need to first remove the RowLabel and ColumnLabel
+        # bounding boxes
+        # Why this isn't done for us, I'll never know...
+        x = x - self.grid.GetGridRowLabelWindow().GetRect().width
+        y = y - self.grid.GetGridColLabelWindow().GetRect().height
+        col = self.grid.XToCol(x)
+        row = self.grid.YToRow(y)
+
+        if row > -1 and col > -1:
+            self.grid.SetCellValue(row, col, filenames[0])
+            self.grid.AutoSizeColumn(col)
+            self.grid.Refresh()
+
+
+
+class FooTable(wxPyGridTableBase):
+    def __init__(self):
+        wxPyGridTableBase.__init__(self)
+        self.dropTargets = {(0,0):"Drag",
+                            (1,0):"A",
+                            (2,0):"File",
+                            (3,0):"To",
+                            (4,0):"A",
+                            (5,0):"Cell"}
+    def GetNumberCols(self):
+        return 100
+    def GetNumberRows(self):
+        return 100
+    def GetValue(self, row, col):
+        return self.dropTargets.get((row, col), "")
+
+
+
+class SimpleGrid(wxGrid):
+    def __init__(self, parent, log):
+        wxGrid.__init__(self, parent, -1)
+        self.log = log
+        self.moveTo = None
+        if VIRTUAL:
+            self.table = FooTable()
+            self.SetTable(self.table)
+        else:
+            self.CreateGrid(25, 25)
+
+        # set the drag and drop target
+        dropTarget = GridFileDropTarget(self)
+        self.SetDropTarget(dropTarget)
+        self.EnableDragRowSize()
+        self.EnableDragColSize()
+
+    def SetCellValue(self, row, col, value):
+        if VIRTUAL:
+            self.table.dropTargets[row, col] = value
+        else:
+            wxGrid.SetCellValue(self, row, col, value)
+
+
+
+class TestFrame(wxFrame):
+    def __init__(self, parent, log):
+        wxFrame.__init__(self, parent, -1, "DragAndDrop Grid", size=(640,480))
+        grid = SimpleGrid(self, log)
+
+
+
+#---------------------------------------------------------------------------
+
+if __name__ == '__main__':
+    import sys
+    app = wxPySimpleApp()
+    frame = TestFrame(None, sys.stdout)
+    frame.Show(True)
+    app.MainLoop()
+
+
+#---------------------------------------------------------------------------
+
+
+
+