/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/view.py
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revision 1453 by jonathan, Thu Jul 10 14:52:39 2003 UTC revision 1454 by bh, Fri Jul 18 14:41:04 2003 UTC
# Line 42  from renderer import ScreenRenderer, Exp Line 42  from renderer import ScreenRenderer, Exp
42    
43  import labeldialog  import labeldialog
44    
45  from viewport import ViewPort, PanTool  from viewport import ViewPort, PanTool, output_transform
46    
47  class CanvasPanTool(PanTool):  class CanvasPanTool(PanTool):
48    
# Line 87  class MapPrintout(wx.wxPrintout): Line 87  class MapPrintout(wx.wxPrintout):
87    
88      def draw_on_dc(self, dc):      def draw_on_dc(self, dc):
89          width, height = self.GetPageSizePixels()          width, height = self.GetPageSizePixels()
90          scale, offset, mapregion = OutputTransform(self.canvas.scale,          scale, offset, mapregion = output_transform(self.canvas.scale,
91                                                     self.canvas.offset,                                                      self.canvas.offset,
92                                                     self.canvas.GetSizeTuple(),                                                      self.canvas.GetSizeTuple(),
93                                                     self.GetPageSizePixels())                                                      self.GetPageSizePixels())
94          resx, resy = self.GetPPIPrinter()          resx, resy = self.GetPPIPrinter()
95          renderer = PrinterRenderer(dc, scale, offset, resolution = resy)          renderer = PrinterRenderer(dc, scale, offset, resolution = resy)
96          x, y, width, height = self.region          x, y, width, height = self.region
# Line 232  class MapCanvas(wxWindow, ViewPort): Line 232  class MapCanvas(wxWindow, ViewPort):
232              self.export_path = os.path.dirname(dlg.GetPath())              self.export_path = os.path.dirname(dlg.GetPath())
233              dc = wxMetaFileDC(dlg.GetPath())              dc = wxMetaFileDC(dlg.GetPath())
234            
235              scale, offset, mapregion = OutputTransform(self.scale,              scale, offset, mapregion = output_transform(self.scale,
236                                                         self.offset,                                                          self.offset,
237                                                         self.GetSizeTuple(),                                                          self.GetSizeTuple(),
238                                                         dc.GetSizeTuple())                                                          dc.GetSizeTuple())
239    
240              selected_layer = self.selection.SelectedLayer()              selected_layer = self.selection.SelectedLayer()
241              selected_shapes = self.selection.SelectedShapes()              selected_shapes = self.selection.SelectedShapes()
# Line 347  class MapCanvas(wxWindow, ViewPort): Line 347  class MapCanvas(wxWindow, ViewPort):
347    
348      def LabelShapeAt(self, x, y, text=None):      def LabelShapeAt(self, x, y, text=None):
349          """Add or remove a label at window position x, y.          """Add or remove a label at window position x, y.
350                                                                                    
351          If there's a label at the given position, remove it. Otherwise          If there's a label at the given position, remove it. Otherwise
352          determine the shape at the position, run the label dialog and          determine the shape at the position, run the label dialog and
353          unless the user cancels the dialog, add a label.          unless the user cancels the dialog, add a label.
# Line 361  class MapCanvas(wxWindow, ViewPort): Line 361  class MapCanvas(wxWindow, ViewPort):
361                                                  layer.ShapeStore().Table(),                                                  layer.ShapeStore().Table(),
362                                                  shape_index)                                                  shape_index)
363              ViewPort.LabelShapeAt(self, x, y, text)              ViewPort.LabelShapeAt(self, x, y, text)
           
 def OutputTransform(canvas_scale, canvas_offset, canvas_size, device_extend):  
     """Calculate dimensions to transform canvas content to output device."""  
     width, height = device_extend  
   
     # Only 80 % of the with are available for the map  
     width = width * 0.8  
   
     # Define the distance of the map from DC border  
     distance = 20  
   
     if height < width:  
         # landscape  
         map_height = height - 2*distance  
         map_width = map_height  
     else:  
         # portrait, recalibrate width (usually the legend width is too  
         # small  
         width = width * 0.9  
         map_height = width - 2*distance  
         map_width = map_height  
       
     mapregion = (distance, distance,  
                  distance+map_width, distance+map_height)  
   
     canvas_width, canvas_height = canvas_size  
       
     scalex = map_width / (canvas_width/canvas_scale)  
     scaley = map_height / (canvas_height/canvas_scale)  
     scale = min(scalex, scaley)  
     canvas_offx, canvas_offy = canvas_offset  
     offx = scale*canvas_offx/canvas_scale  
     offy = scale*canvas_offy/canvas_scale  
   
     return scale, (offx, offy), mapregion  
Legend:
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changed lines
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