wxPython/demo/GridDragAndDrop.py

   1 """
   2 Example showing how to make a grid a drop target for files.
   3
   4 """
   5
   6 from wxPython.wx import *
   7 from wxPython.grid import *
   8
   9 #---------------------------------------------------------------------------
  10 # Set VIRTUAL to 1 to use a virtual grid
  11
  12 VIRTUAL = 1
  13
  14 class GridFileDropTarget(wxFileDropTarget):
  15     def __init__(self, grid):
  16         wxFileDropTarget.__init__(self)
  17         self.grid = grid
  18
  19     def OnDropFiles(self, x, y, filenames):
  20         # the x,y coordinates here are Unscrolled coordinates.  They must be changed
  21         # to scrolled coordinates.
  22         x, y = self.grid.CalcUnscrolledPosition(x, y)
  23
  24         # now we need to get the row and column from the grid
  25         # but we need to first remove the RowLabel and ColumnLabel
  26         # bounding boxes
  27         # Why this isn't done for us, I'll never know...
  28         x = x - self.grid.GetGridRowLabelWindow().GetRect().width
  29         y = y - self.grid.GetGridColLabelWindow().GetRect().height
  30         col = self.grid.XToCol(x)
  31         row = self.grid.YToRow(y)
  32
  33         if row > -1 and col > -1:
  34             self.grid.SetCellValue(row, col, filenames[0])
  35             self.grid.AutoSizeColumn(col)
  36             self.grid.Refresh()
  37
  38
  39
  40 class FooTable(wxPyGridTableBase):
  41     def __init__(self):
  42         wxPyGridTableBase.__init__(self)
  43         self.dropTargets = {(0,0):"Drag",
  44                             (1,0):"A",
  45                             (2,0):"File",
  46                             (3,0):"To",
  47                             (4,0):"A",
  48                             (5,0):"Cell"}
  49     def GetNumberCols(self):
  50         return 100
  51     def GetNumberRows(self):
  52         return 100
  53     def GetValue(self, row, col):
  54         return self.dropTargets.get((row, col), "")
  55
  56
  57
  58 class SimpleGrid(wxGrid):
  59     def __init__(self, parent, log):
  60         wxGrid.__init__(self, parent, -1)
  61         self.log = log
  62         self.moveTo = None
  63         if VIRTUAL:
  64             self.table = FooTable()
  65             self.SetTable(self.table)
  66         else:
  67             self.CreateGrid(25, 25)
  68
  69         # set the drag and drop target
  70         dropTarget = GridFileDropTarget(self)
  71         self.SetDropTarget(dropTarget)
  72         self.EnableDragRowSize()
  73         self.EnableDragColSize()
  74
  75     def SetCellValue(self, row, col, value):
  76         if VIRTUAL:
  77             self.table.dropTargets[row, col] = value
  78         else:
  79             wxGrid.SetCellValue(self, row, col, value)
  80
  81
  82
  83 class TestFrame(wxFrame):
  84     def __init__(self, parent, log):
  85         wxFrame.__init__(self, parent, -1, "DragAndDrop Grid", size=(640,480))
  86         grid = SimpleGrid(self, log)
  87
  88
  89
  90 #---------------------------------------------------------------------------
  91
  92 if __name__ == '__main__':
  93     import sys
  94     app = wxPySimpleApp()
  95     frame = TestFrame(None, sys.stdout)
  96     frame.Show(True)
  97     app.MainLoop()
  98
  99
 100 #---------------------------------------------------------------------------
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