/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 605 by jonathan, Fri Apr 4 12:16:13 2003 UTC revision 686 by bh, Wed Apr 16 13:22:25 2003 UTC
# Line 12  from wxPython.wx import wxPoint, wxPen, Line 12  from wxPython.wx import wxPoint, wxPen,
12       wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \       wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \
13       wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL       wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL
14    
15  from wxproj import draw_polygon_shape  from wxproj import draw_polygon_shape, draw_polygon_init
16    
17  from Thuban import _  from Thuban import _
18  from Thuban.UI.common import *  from Thuban.UI.common import *
# Line 85  class MapRenderer: Line 85  class MapRenderer:
85          lc = layer.GetClassification()          lc = layer.GetClassification()
86          field = lc.GetField()          field = lc.GetField()
87    
88          defaultProps = lc.GetDefaultGroup().GetProperties()  
89            if shapetype != SHAPETYPE_POINT:
90                polygon_render_param = self.polygon_render_param(layer)
91    
92          for i in self.layer_ids(layer):          for i in self.layer_ids(layer):
93              value = None              value = None
# Line 103  class MapRenderer: Line 105  class MapRenderer:
105                  # be null, at which point this call will                  # be null, at which point this call will
106                  # at least retreive the NullData                  # at least retreive the NullData
107                  #                  #
108                  prop = lc.GetProperties(value)  
109                    group = lc.FindGroup(value)
110    
111                    #prop = lc.GetProperties(value)
112              else:              else:
113                  prop = defaultProps                  group = lc.GetDefaultGroup()
114    
115    
116                if not group.IsVisible():
117                    continue
118    
119                prop = group.GetProperties()
120    
121              # don't recreate new objects if they are the same as before              # don't recreate new objects if they are the same as before
122              if prop != old_prop:              if prop != old_prop:
123                  old_prop = prop                  old_prop = prop
124    
125                  if shapetype == SHAPETYPE_ARC:                  if shapetype == SHAPETYPE_ARC:
126                      fill = Color.None                      fill = Color.Transparent
127                  else:                  else:
128                      fill = prop.GetFill()                      fill = prop.GetFill()
129        
130                  if fill is Color.None:  
131                    if fill is Color.Transparent:
132                      brush = wxTRANSPARENT_BRUSH                      brush = wxTRANSPARENT_BRUSH
133                  else:                  else:
134                      color = Color2wxColour(fill)                      color = Color2wxColour(fill)
135                      brush = wxBrush(color, wxSOLID)                      brush = wxBrush(color, wxSOLID)
136        
137                  stroke = prop.GetLineColor()                  stroke = prop.GetLineColor()
138                  stroke_width = prop.GetLineWidth()                  stroke_width = prop.GetLineWidth()
139                  if stroke is Color.None:                  if stroke is Color.Transparent:
140                      pen = wxTRANSPARENT_PEN                      pen = wxTRANSPARENT_PEN
141                  else:                  else:
142                      color = Color2wxColour(stroke)                      color = Color2wxColour(stroke)
143                      pen = wxPen(color, stroke_width, wxSOLID)                      pen = wxPen(color, stroke_width, wxSOLID)
144        
145    
146              if shapetype == SHAPETYPE_POINT:              if shapetype == SHAPETYPE_POINT:
147                  self.dc.SetBrush(brush)                  self.dc.SetBrush(brush)
148                  self.dc.SetPen(pen)                  self.dc.SetPen(pen)
149                  self.draw_point_shape(layer, i)                  self.draw_point_shape(layer, i)
150              else:              else:
151                  self.draw_polygon_shape(layer, i, pen, brush)                  self.draw_polygon_shape(polygon_render_param, i, pen, brush)
152    
153      def layer_ids(self, layer):      def layer_ids(self, layer):
154          """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.
155            
156          The default implementation simply returns all ids in the layer.          The default implementation simply returns all ids in the layer.
157          Override in derived classes to be more precise.          Override in derived classes to be more precise.
158          """          """
159          return range(layer.NumShapes())          return range(layer.NumShapes())
160    
161      def draw_polygon_shape(self, layer, index, pen, brush):      def polygon_render_param(self, layer):
162          offx, offy = self.offset                  """Return the low-lever render parameter for the layer"""
163          draw_polygon_shape(layer.shapefile.cobject(), index,          offx, offy = self.offset
164                             self.dc, pen, brush,          return draw_polygon_init(layer.shapefile, self.dc,
165                             self.map.projection, layer.projection,                                   self.map.projection,
166                             self.scale, -self.scale, offx, offy)                                   layer.projection,
167                                     self.scale, -self.scale,
168                                     offx, offy)
169    
170        def draw_polygon_shape(self, draw_polygon_info, index, pen, brush):
171            draw_polygon_shape(draw_polygon_info, index, pen, brush)
172    
173      def projected_points(self, layer, index):      def projected_points(self, layer, index):
174          proj = self.map.projection          proj = self.map.projection
# Line 254  class ScreenRenderer(MapRenderer): Line 272  class ScreenRenderer(MapRenderer):
272    
273              shapetype = layer.ShapeType()              shapetype = layer.ShapeType()
274              if shapetype == SHAPETYPE_POLYGON:              if shapetype == SHAPETYPE_POLYGON:
275                    offx, offy = self.offset
276                    renderparam = self.polygon_render_param(layer)
277                  func = self.draw_polygon_shape                  func = self.draw_polygon_shape
278                  args = (pen, brush)                  args = (pen, brush)
279              elif shapetype == SHAPETYPE_ARC:              elif shapetype == SHAPETYPE_ARC:
280                    renderparam = self.polygon_render_param(layer)
281                  func = self.draw_polygon_shape                  func = self.draw_polygon_shape
282                  args = (pen, None)                  args = (pen, None)
283              elif shapetype == SHAPETYPE_POINT:              elif shapetype == SHAPETYPE_POINT:
284                    renderparam = layer
285                  self.dc.SetBrush(brush)                  self.dc.SetBrush(brush)
286                  self.dc.SetPen(pen)                  self.dc.SetPen(pen)
287                  func = self.draw_point_shape                  func = self.draw_point_shape
# Line 268  class ScreenRenderer(MapRenderer): Line 290  class ScreenRenderer(MapRenderer):
290                  raise TypeError(_("Unhandled shape type %s") % shapetype)                  raise TypeError(_("Unhandled shape type %s") % shapetype)
291    
292              for index in self.selected_shapes:              for index in self.selected_shapes:
293                  func(layer, index, *args)                  func(renderparam, index, *args)
294    
295    
296      def layer_ids(self, layer):      def layer_ids(self, layer):
297          """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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