/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 1234 by jonathan, Wed Jun 18 14:47:38 2003 UTC revision 1539 by bh, Fri Aug 1 14:27:57 2003 UTC
# Line 27  from Thuban.UI.common import Color2wxCol Line 27  from Thuban.UI.common import Color2wxCol
27  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
28  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
29    
30  from Thuban.Model.layer import Layer, RasterLayer, \  from Thuban.Model.layer import Layer, RasterLayer
31       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT
32  from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \  from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \
33       ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE       ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE
34    
35  from Thuban.Model.classification import Classification  from Thuban.Model.classification import Classification
36  from Thuban.Model.color import Color  from Thuban.Model.color import Transparent
37  import Thuban.Model.resource  import Thuban.Model.resource
38    
39  if Thuban.Model.resource.has_gdal_support():  if Thuban.Model.resource.has_gdal_support():
# Line 75  class MapRenderer: Line 75  class MapRenderer:
75          self.map = map          self.map = map
76          seenRaster = True          seenRaster = True
77    
78          if self.scale == 0:          self.dc.BeginDrawing()
             return  
79    
80          #          #
81          # This is only a good optimization if there is only one          # This is only a good optimization if there is only one
# Line 104  class MapRenderer: Line 103  class MapRenderer:
103    
104          self.draw_label_layer(map.LabelLayer())          self.draw_label_layer(map.LabelLayer())
105    
106            self.dc.EndDrawing()
107    
108      def draw_shape_layer(self, layer):      def draw_shape_layer(self, layer):
109          scale = self.scale          scale = self.scale
110          offx, offy = self.offset          offx, offy = self.offset
# Line 119  class MapRenderer: Line 120  class MapRenderer:
120          old_prop = None          old_prop = None
121          old_group = None          old_group = None
122          lc = layer.GetClassification()          lc = layer.GetClassification()
123          field = lc.GetField()          field = layer.GetClassificationColumn()
124          defaultGroup = lc.GetDefaultGroup()          defaultGroup = lc.GetDefaultGroup()
125    
126    
         if shapetype != SHAPETYPE_POINT:  
             polygon_render_param = self.polygon_render_param(layer)  
127    
128          if shapetype == SHAPETYPE_POINT:          if shapetype == SHAPETYPE_POINT:
129              draw_func = lambda i: \              draw_func = self.draw_point_shape
130                     self.draw_point_shape(layer, i)              draw_func_param = layer
131          else:          else:
132              draw_func = lambda i: \              draw_func = draw_polygon_shape
133                     self.draw_polygon_shape(polygon_render_param, i, pen, brush)              draw_func_param = self.polygon_render_param(layer)
134    
135          table = layer.ShapeStore().Table()          table = layer.ShapeStore().Table()
136          for i in self.layer_ids(layer):          for i in self.layer_ids(layer):
# Line 158  class MapRenderer: Line 157  class MapRenderer:
157                      old_prop = prop                      old_prop = prop
158    
159                      if shapetype == SHAPETYPE_ARC:                      if shapetype == SHAPETYPE_ARC:
160                          fill = Color.Transparent                          fill = Transparent
161                      else:                      else:
162                          fill = prop.GetFill()                          fill = prop.GetFill()
163    
164    
165                      if fill is Color.Transparent:                      if fill is Transparent:
166                          brush = wxTRANSPARENT_BRUSH                          brush = wxTRANSPARENT_BRUSH
167                      else:                      else:
168                          color = Color2wxColour(fill)                          color = Color2wxColour(fill)
# Line 171  class MapRenderer: Line 170  class MapRenderer:
170    
171                      stroke = prop.GetLineColor()                      stroke = prop.GetLineColor()
172                      stroke_width = prop.GetLineWidth()                      stroke_width = prop.GetLineWidth()
173                      if stroke is Color.Transparent:                      if stroke is Transparent:
174                          pen = wxTRANSPARENT_PEN                          pen = wxTRANSPARENT_PEN
175                      else:                      else:
176                          color = Color2wxColour(stroke)                          color = Color2wxColour(stroke)
177                          pen = wxPen(color, stroke_width, wxSOLID)                          pen = wxPen(color, stroke_width, wxSOLID)
178    
179                      if shapetype == SHAPETYPE_POINT:              draw_func(draw_func_param, i, pen, brush)
                         self.dc.SetBrush(brush)  
                         self.dc.SetPen(pen)  
   
             draw_func(i)  
180    
181      def draw_raster_layer(self, layer):      def draw_raster_layer(self, layer):
182          data = None          data = None
# Line 221  class MapRenderer: Line 216  class MapRenderer:
216                  stream = cStringIO.StringIO(data)                  stream = cStringIO.StringIO(data)
217                  image = wxImageFromStream(stream, wxBITMAP_TYPE_BMP)                  image = wxImageFromStream(stream, wxBITMAP_TYPE_BMP)
218                  bitmap = wxBitmapFromImage(image)                  bitmap = wxBitmapFromImage(image)
                 self.dc.BeginDrawing()  
219                  self.dc.DrawBitmap(bitmap, 0, 0)                  self.dc.DrawBitmap(bitmap, 0, 0)
                 self.dc.EndDrawing()  
220    
221      def layer_ids(self, layer):      def layer_ids(self, layer):
222          """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 273  class MapRenderer: Line 266  class MapRenderer:
266          points = self.projected_points(layer, index)          points = self.projected_points(layer, index)
267          self.dc.DrawLines(points)          self.dc.DrawLines(points)
268    
269      def draw_point_shape(self, layer, index):      def draw_point_shape(self, layer, index, pen, brush):
270          pp = self.projected_points(layer, index)          pp = self.projected_points(layer, index)
271    
272          if len(pp) == 0: return # ignore Null Shapes which have no points          if len(pp) == 0: return # ignore Null Shapes which have no points
273    
274          p = pp[0]          p = pp[0]
275          radius = self.resolution * 5          radius = self.resolution * 5
276            self.dc.SetBrush(brush)
277            self.dc.SetPen(pen)
278          self.dc.DrawEllipse(p.x - radius, p.y - radius, 2*radius, 2*radius)          self.dc.DrawEllipse(p.x - radius, p.y - radius, 2*radius, 2*radius)
279    
280      def draw_label_layer(self, layer):      def draw_label_layer(self, layer):
# Line 357  class ScreenRenderer(MapRenderer): Line 352  class ScreenRenderer(MapRenderer):
352                  args = (pen, None)                  args = (pen, None)
353              elif shapetype == SHAPETYPE_POINT:              elif shapetype == SHAPETYPE_POINT:
354                  renderparam = layer                  renderparam = layer
                 self.dc.SetBrush(brush)  
                 self.dc.SetPen(pen)  
355                  func = self.draw_point_shape                  func = self.draw_point_shape
356                  args = ()                  args = (pen, brush)
357              else:              else:
358                  raise TypeError(_("Unhandled shape type %s") % shapetype)                  raise TypeError(_("Unhandled shape type %s") % shapetype)
359    
360              for index in self.selected_shapes:              for index in self.selected_shapes:
361                  func(renderparam, index, *args)                  func(renderparam, index, *args)
362    
   
363      def layer_ids(self, layer):      def layer_ids(self, layer):
364          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
365    
# Line 515  class ExportRenderer(ScreenRenderer): Line 507  class ExportRenderer(ScreenRenderer):
507          # Render the legend          # Render the legend
508          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wxBLACK)
509          if map.HasLayers():          if map.HasLayers():
510              for l in map.Layers():              layers = map.Layers()
511                layers.reverse()
512                for l in layers:
513                  if l.Visible():                  if l.Visible():
514                      # Render title                      # Render title
515                      dc.DrawText(l.Title(), posx, posy)                      dc.DrawText(l.Title(), posx, posy)
516                      posy+=stepy                      posy+=stepy
517                      # Render classification                      if l.HasClassification():
518                      clazz = l.GetClassification()                          # Render classification
519                      shapeType = l.ShapeType()                          clazz = l.GetClassification()
520                      for g in clazz:                          shapeType = l.ShapeType()
521                          if g.IsVisible():                          for g in clazz:
522                              previewer.Draw(dc,                              if g.IsVisible():
523                                  wxRect(posx+dx, posy, iconwidth, iconheight),                                  previewer.Draw(dc,
524                                  g.GetProperties(), shapeType)                                      wxRect(posx+dx, posy,
525                              dc.DrawText(g.GetDisplayText(),                                             iconwidth, iconheight),
526                                          posx+2*dx+iconwidth, posy)                                      g.GetProperties(), shapeType)
527                              posy+=stepy                                  dc.DrawText(g.GetDisplayText(),
528                                                posx+2*dx+iconwidth, posy)
529                                    posy+=stepy
530                    
531      def render_scalebar(self, map):      def render_scalebar(self, map):
532          """Render the scalebar."""          """Render the scalebar."""
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