/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 148 by bh, Tue May 7 16:40:29 2002 UTC revision 432 by jonathan, Mon Feb 24 18:47:36 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002 by Intevation GmbH  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
4    # Jonathan Coles <[email protected]>
5  #  #
6  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
7  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 13  from wxPython.wx import wxPoint, wxColou Line 14  from wxPython.wx import wxPoint, wxColou
14    
15  from wxproj import draw_polygon_shape  from wxproj import draw_polygon_shape
16    
17    from Thuban import _
18    
19  from Thuban.Model.layer import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \  from Thuban.Model.layer import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
20       SHAPETYPE_POINT       SHAPETYPE_POINT
21  from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \  from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \
22       ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE       ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE
23    
24    from Thuban.Model.classification import Classification
25    from Thuban.Model.color import Color
26    
27    
28  class MapRenderer:  class MapRenderer:
29    
# Line 63  class MapRenderer: Line 69  class MapRenderer:
69          scale = self.scale          scale = self.scale
70          offx, offy = self.offset          offx, offy = self.offset
71    
         fill = layer.fill  
         if fill is None:  
             brush = wxTRANSPARENT_BRUSH  
         else:  
             color = wxColour(fill.red * 255,  
                              fill.green * 255,  
                              fill.blue * 255)  
             brush = wxBrush(color, wxSOLID)  
         stroke = layer.stroke  
         stroke_width = layer.stroke_width  
         if stroke is None:  
             pen = wxTRANSPARENT_PEN  
         else:  
             color = wxColour(stroke.red * 255,  
                              stroke.green * 255,  
                              stroke.blue * 255)  
             pen = wxPen(color, stroke_width, wxSOLID)  
   
72          map_proj = self.map.projection          map_proj = self.map.projection
73          layer_proj = layer.projection          layer_proj = layer.projection
74    
75          shapetype = layer.ShapeType()          shapetype = layer.ShapeType()
76    
77          if shapetype == SHAPETYPE_POLYGON:          brush = wxTRANSPARENT_BRUSH
78              for i in self.layer_ids(layer):          pen   = wxTRANSPARENT_PEN
79    
80            old_prop = None
81            for i in self.layer_ids(layer):
82                value = None
83                lc = layer.GetClassification()
84                field = lc.field
85    
86                if field is not None:
87                    record = layer.table.read_record(i)
88                    if record is not None:
89                        value = record[field]
90    
91                #
92                # if the above statements fail 'value' should
93                # be null, at which point this call will
94                # at least retreive the NullData
95                #
96                prop = lc.GetClassData(value)
97    
98                if prop != old_prop:
99                    old_prop = prop
100    
101                    if shapetype == SHAPETYPE_ARC:
102                        fill = Color.None
103                    else:
104                        fill = prop.GetFill()
105        
106                    if fill is Color.None:
107                        brush = wxTRANSPARENT_BRUSH
108                    else:
109                        color = wxColour(fill.red * 255,
110                                         fill.green * 255,
111                                         fill.blue * 255)
112                        brush = wxBrush(color, wxSOLID)
113        
114                    stroke = prop.GetStroke()
115                    stroke_width = prop.GetStrokeWidth()
116                    if stroke is Color.None:
117                        pen = wxTRANSPARENT_PEN
118                    else:
119                        color = wxColour(stroke.red * 255,
120                                         stroke.green * 255,
121                                         stroke.blue * 255)
122                        pen = wxPen(color, stroke_width, wxSOLID)
123        
124                if shapetype == SHAPETYPE_POINT:
125                    self.dc.SetBrush(brush)
126                    self.dc.SetPen(pen)
127                    self.draw_point_shape(layer, i)
128                else:
129                  self.draw_polygon_shape(layer, i, pen, brush)                  self.draw_polygon_shape(layer, i, pen, brush)
         elif shapetype == SHAPETYPE_ARC:  
             for i in self.layer_ids(layer):  
                 self.draw_polygon_shape(layer, i, pen, None)  
         else:  
             self.dc.SetBrush(brush)  
             self.dc.SetPen(pen)  
             if shapetype == SHAPETYPE_ARC:  
                 f = self.draw_arc_shape  
             elif shapetype == SHAPETYPE_POINT:  
                 f = self.draw_point_shape  
             for i in self.layer_ids(layer):  
                 f(layer, i)  
130    
131      def layer_ids(self, layer):      def layer_ids(self, layer):
132          """Return the shape ids of the given layer that have to be drawn.          """Return the shape ids of the given layer that have to be drawn.
# Line 216  class ScreenRenderer(MapRenderer): Line 242  class ScreenRenderer(MapRenderer):
242              index = self.selected_shape              index = self.selected_shape
243              if shapetype == SHAPETYPE_POLYGON:              if shapetype == SHAPETYPE_POLYGON:
244                  self.draw_polygon_shape(layer, index, pen, brush)                  self.draw_polygon_shape(layer, index, pen, brush)
245                elif shapetype == SHAPETYPE_ARC:
246                    self.draw_polygon_shape(layer, index, pen, None)
247              else:              else:
248                  self.dc.SetBrush(brush)                  self.dc.SetBrush(brush)
249                  self.dc.SetPen(pen)                  self.dc.SetPen(pen)
250                  if shapetype == SHAPETYPE_ARC:                  if shapetype == SHAPETYPE_POINT:
251                      f = self.draw_arc_shape                      self.draw_point_shape(layer, index)
252                  elif shapetype == SHAPETYPE_POINT:                  else:
253                      f = self.draw_point_shape                      raise TypeError(_("Unhandled shape type %s") % shapetype)
                 f(layer, index)  
254    
255      def layer_ids(self, layer):      def layer_ids(self, layer):
256          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
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