/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 938 by jonathan, Tue May 20 15:25:10 2003 UTC revision 2431 by joey, Sun Dec 5 15:05:02 2004 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH  # Copyright (c) 2001-2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]> (2001-2003)
4  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]> (2003)
5  # Frank Koormann <[email protected]>  # Frank Koormann <[email protected]> (2003)
6    # Jan-Oliver Wagner <[email protected]> (2003, 2004)
7  #  #
8  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
9  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
10    
11    from __future__ import generators
12    
13  __version__ = "$Revision$"  __version__ = "$Revision$"
14    # $Source$
15    # $Id$
16    
17  import cStringIO  import cStringIO
18    
19  from Thuban import _  from Thuban import _
20    
21  from wxPython.wx import wxMemoryDC, wxEmptyBitmap, \  from wxPython.wx import wxPoint, wxRect, wxPen, wxBrush, wxFont, \
     wxPoint, wxRect, wxPen, wxBrush, wxFont, \  
22      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \
23      wxBLACK_PEN, wxRED_PEN, wxBLACK, \      wxBLACK_PEN, wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \
24      wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \      wxBitmapFromImage, wxImageFromStream, wxBITMAP_TYPE_BMP, \
25      wxBitmap, wxImageFromBitmap, wxBitmapFromImage, \      wxBITMAP_TYPE_JPEG, wxBITMAP_TYPE_PNG, wxBITMAP_TYPE_TIF, wxBITMAP_TYPE_GIF
     wxImageFromStream, wxBITMAP_TYPE_BMP  
26    
27  from wxproj import draw_polygon_shape, draw_polygon_init  from wxproj import draw_polygon_shape, draw_polygon_init
 from gdalwarp import ProjectRasterFile  
28    
29  from Thuban.UI.common import Color2wxColour  from Thuban.UI.common import Color2wxColour
30  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
31  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
32    
33  from Thuban.Model.layer import Layer, RasterLayer, \  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
34       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT       SHAPETYPE_POINT, RAW_SHAPEFILE
 from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \  
      ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE  
   
 from Thuban.Model.classification import Classification  
 from Thuban.Model.color import Color  
   
 class MapRenderer:  
35    
36      """Class to render a map onto a wxDC"""  from Thuban.Model.color import Transparent
37    import Thuban.Model.resource
38    
39      honor_visibility = 1  from baserenderer import BaseRenderer
40    
     def __init__(self, dc, scale, offset, resolution = 72.0,  
                  honor_visibility = None):  
         """Inititalize the renderer.  
   
         dc -- the wxPython DC to render on  
         scale, offset -- the scale factor and translation to convert  
                 between projected coordinates and the DC coordinates  
   
         resolution -- the assumed resolution of the DC. Used to convert  
                 absolute lengths like font sizes to DC coordinates  
   
         honor_visibility -- boolean. If true, honor the visibility flag  
                 of the layers, otherwise draw all layers. If None, use  
                 the renderer's default.  
         """  
         # resolution in pixel/inch  
41    
42          self.dc = dc  # Map the strings used for the format parameter of the draw_raster_data
43          self.scale = scale  # method to the appropriate wxWindows constants
44          self.offset = offset  raster_format_map = {
45          if honor_visibility is not None:      "BMP": wxBITMAP_TYPE_BMP,
46              self.honor_visibility = honor_visibility      "JPEG": wxBITMAP_TYPE_JPEG,
47          # store the resolution in pixel/point because it's more useful      "PNG": wxBITMAP_TYPE_PNG,
48          # later.      "TIFF": wxBITMAP_TYPE_TIF,
49          self.resolution = resolution / 72.0      "GIF": wxBITMAP_TYPE_GIF,
50        }
     def render_map(self, map):  
         self.map = map  
         seenRaster = True  
   
         #  
         # This is only a good optimization if there is only one  
         # raster layer and the image covers the entire window (as  
         # it currently does).  
         #  
         for layer in map.Layers():  
             if isinstance(layer, RasterLayer):  
                 seenRaster = False  
                 break  
   
         for layer in map.Layers():  
             # if honor_visibility is true, only draw visible layers,  
             # otherwise draw all layers  
             if not self.honor_visibility or layer.Visible():  
                 if isinstance(layer, Layer) and seenRaster:  
                     self.draw_shape_layer(layer)  
                 elif isinstance(layer, RasterLayer):  
                     self.draw_raster_layer(layer)  
                     seenRaster = True  
51    
52          self.draw_label_layer(map.LabelLayer())  class MapRenderer(BaseRenderer):
53    
54      def draw_shape_layer(self, layer):      """Class to render a map onto a wxDC"""
         scale = self.scale  
         offx, offy = self.offset  
   
         map_proj = self.map.projection  
         layer_proj = layer.projection  
   
         shapetype = layer.ShapeType()  
   
         brush = wxTRANSPARENT_BRUSH  
         pen   = wxTRANSPARENT_PEN  
   
         old_prop = None  
         old_group = None  
         lc = layer.GetClassification()  
         field = lc.GetField()  
         defaultGroup = lc.GetDefaultGroup()  
55    
56        TRANSPARENT_PEN = wxTRANSPARENT_PEN
57        TRANSPARENT_BRUSH = wxTRANSPARENT_BRUSH
58    
59          if shapetype != SHAPETYPE_POINT:      def make_point(self, x, y):
60              polygon_render_param = self.polygon_render_param(layer)          return wxPoint(int(round(x)), int(round(y)))
61    
62          if shapetype == SHAPETYPE_POINT:      def tools_for_property(self, prop):
63              draw_func = lambda i: \          fill = prop.GetFill()
64                     self.draw_point_shape(layer, i)          if fill is Transparent:
65                brush = self.TRANSPARENT_BRUSH
66          else:          else:
67              draw_func = lambda i: \              brush = wxBrush(Color2wxColour(fill), wxSOLID)
                    self.draw_polygon_shape(polygon_render_param, i, pen, brush)  
               
         for i in self.layer_ids(layer):  
   
             if field is None:  
                 group = defaultGroup  
             else:  
                 record = layer.table.ReadRowAsDict(i)  
                 assert record is not None  
                 group = lc.FindGroup(record[field])  
   
   
             if not group.IsVisible():  
                 continue  
   
   
             # don't recreate new objects if they are the same as before  
             if group is not old_group:  
                 old_group = group  
68    
69                  prop = group.GetProperties()          stroke = prop.GetLineColor()
70            if stroke is Transparent:
71                  if prop != old_prop:              pen = self.TRANSPARENT_PEN
                     old_prop = prop  
   
                     if shapetype == SHAPETYPE_ARC:  
                         fill = Color.Transparent  
                     else:  
                         fill = prop.GetFill()  
   
   
                     if fill is Color.Transparent:  
                         brush = wxTRANSPARENT_BRUSH  
                     else:  
                         color = Color2wxColour(fill)  
                         brush = wxBrush(color, wxSOLID)  
   
                     stroke = prop.GetLineColor()  
                     stroke_width = prop.GetLineWidth()  
                     if stroke is Color.Transparent:  
                         pen = wxTRANSPARENT_PEN  
                     else:  
                         color = Color2wxColour(stroke)  
                         pen = wxPen(color, stroke_width, wxSOLID)  
   
                     if shapetype == SHAPETYPE_POINT:  
                         self.dc.SetBrush(brush)  
                         self.dc.SetPen(pen)  
   
             draw_func(i)  
   
     def draw_raster_layer(self, layer):  
         data = None  
         offx, offy = self.offset  
         width, height = self.dc.GetSizeTuple()  
   
         inProj = ""  
         proj = layer.GetProjection()  
         if proj is not None:  
             for p in proj.GetAllParameters():  
                 inProj += "+" + p + " "  
   
         outProj = ""  
         proj = self.map.GetProjection()  
         if proj is not None:  
             for p in proj.GetAllParameters():  
                 outProj += "+" + p + " "  
   
         print "self.scale: ", self.scale, offx, offy, width, height  
         xmin = (0 - offx) / self.scale  
         ymin = (offy - height) / self.scale  
         xmax = (width - offx) / self.scale  
         ymax = (offy - 0) / self.scale  
   
         try:  
             data = ProjectRasterFile(  
                 layer.GetImageFilename(),  
                 inProj,  
                 outProj,  
                 str(xmin), str(ymin), str(xmax), str(ymax),  
                 "", str(width), str(height));  
         except (AttributeError, IOError, ValueError):  
             pass  
72          else:          else:
73              if data is not None:              pen = wxPen(Color2wxColour(stroke), prop.GetLineWidth(), wxSOLID)
74                  stream = cStringIO.StringIO(data)          return pen, brush
                 image = wxImageFromStream(stream, wxBITMAP_TYPE_BMP)  
                 bitmap = wxBitmapFromImage(image)  
                 self.dc.BeginDrawing()  
                 self.dc.DrawBitmap(bitmap, 0, 0)  
                 self.dc.EndDrawing()  
75    
76      def layer_ids(self, layer):      def low_level_renderer(self, layer):
77          """Return the shape ids of the given layer that have to be drawn.          """Override inherited method to provide more efficient renderers
78    
79          The default implementation simply returns all ids in the layer.          If the underlying data format is not a shapefile or the layer
80          Override in derived classes to be more precise.          contains points shapes, simply use what the inherited method
81            returns.
82    
83            Otherwise, i.e. for arc and polygon use the more efficient
84            wxproj.draw_polygon_shape and its corresponding parameter
85            created with wxproj.draw_polygon_init.
86          """          """
87          return range(layer.NumShapes())          if (layer.ShapeStore().RawShapeFormat() == RAW_SHAPEFILE
88                and layer.ShapeType() in (SHAPETYPE_ARC, SHAPETYPE_POLYGON)):
89      def polygon_render_param(self, layer):              offx, offy = self.offset
90          """Return the low-lever render parameter for the layer"""              return (True, draw_polygon_shape,
91          offx, offy = self.offset                      draw_polygon_init(layer.ShapeStore().Shapefile(),
92          return draw_polygon_init(layer.shapefile, self.dc,                                        self.dc, self.map.projection,
93                                   self.map.projection,                                        layer.projection,
94                                   layer.projection,                                        self.scale, -self.scale, offx, offy))
                                  self.scale, -self.scale,  
                                  offx, offy)  
   
     def draw_polygon_shape(self, draw_polygon_info, index, pen, brush):  
         draw_polygon_shape(draw_polygon_info, index, pen, brush)  
   
     def projected_points(self, layer, index):  
         proj = self.map.GetProjection()  
         if proj is not None:  
             forward = proj.Forward  
95          else:          else:
96              forward = None              return BaseRenderer.low_level_renderer(self, layer)
         proj = layer.GetProjection()  
         if proj is not None:  
             inverse = proj.Inverse  
         else:  
             inverse = None  
         shape = layer.Shape(index)  
         points = []  
         scale = self.scale  
         offx, offy = self.offset  
         for x, y in shape.Points():  
             if inverse:  
                 x, y = inverse(x, y)  
             if forward:  
                 x, y = forward(x, y)  
             points.append(wxPoint(x * scale + offx,  
                                   -y * scale + offy))  
         return points  
   
     def draw_arc_shape(self, layer, index):  
         points = self.projected_points(layer, index)  
         self.dc.DrawLines(points)  
   
     def draw_point_shape(self, layer, index):  
         pp = self.projected_points(layer, index)  
   
         if len(pp) == 0: return # ignore Null Shapes which have no points  
   
         p = pp[0]  
         radius = self.resolution * 5  
         self.dc.DrawEllipse(p.x - radius, p.y - radius, 2*radius, 2*radius)  
97    
98      def draw_label_layer(self, layer):      def label_font(self):
99          scale = self.scale          return wxFont(int(round(self.resolution * 10)), wxSWISS, wxNORMAL,
100          offx, offy = self.offset                        wxNORMAL)
101    
102          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)      def draw_raster_data(self, data, format = 'BMP'):
103          self.dc.SetFont(font)          stream = cStringIO.StringIO(data)
104            image = wxImageFromStream(stream, raster_format_map[format])
105          map_proj = self.map.projection          bitmap = wxBitmapFromImage(image)
106          if map_proj is not None:          self.dc.DrawBitmap(bitmap, 0, 0)
             forward = map_proj.Forward  
         else:  
             forward = None  
   
         for label in layer.Labels():  
             x = label.x  
             y = label.y  
             text = label.text  
             if forward:  
                 x, y = forward(x, y)  
             x = x * scale + offx  
             y = -y * scale + offy  
             width, height = self.dc.GetTextExtent(text)  
             if label.halign == ALIGN_LEFT:  
                 # nothing to be done  
                 pass  
             elif label.halign == ALIGN_RIGHT:  
                 x = x - width  
             elif label.halign == ALIGN_CENTER:  
                 x = x - width/2  
             if label.valign == ALIGN_TOP:  
                 # nothing to be done  
                 pass  
             elif label.valign == ALIGN_BOTTOM:  
                 y = y - height  
             elif label.valign == ALIGN_CENTER:  
                 y = y - height/2  
             self.dc.DrawText(text, x, y)  
107    
108    
109  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
110    
111      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
112      honor_visibility = 1      honor_visibility = 1
113        
114      def RenderMap(self, map, region, selected_layer, selected_shapes):      def RenderMap(self, selected_layer, selected_shapes):
115          """Render the map.          """Render the map.
116    
117          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
# Line 322  class ScreenRenderer(MapRenderer): Line 119  class ScreenRenderer(MapRenderer):
119          shapes given by the ids in selected_shapes in the          shapes given by the ids in selected_shapes in the
120          selected_layer.          selected_layer.
121          """          """
         self.update_region = region  
122          self.selected_layer = selected_layer          self.selected_layer = selected_layer
123          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
124          self.render_map(map)          self.render_map()
125    
126      def draw_shape_layer(self, layer):      def RenderMapIncrementally(self):
127          MapRenderer.draw_shape_layer(self, layer)          """Render the map.
         if layer is self.selected_layer and self.selected_shapes:  
             pen = wxPen(wxBLACK, 3, wxSOLID)  
             brush = wxBrush(wxBLACK, wxCROSS_HATCH)  
   
             shapetype = layer.ShapeType()  
             if shapetype == SHAPETYPE_POLYGON:  
                 offx, offy = self.offset  
                 renderparam = self.polygon_render_param(layer)  
                 func = self.draw_polygon_shape  
                 args = (pen, brush)  
             elif shapetype == SHAPETYPE_ARC:  
                 renderparam = self.polygon_render_param(layer)  
                 func = self.draw_polygon_shape  
                 args = (pen, None)  
             elif shapetype == SHAPETYPE_POINT:  
                 renderparam = layer  
                 self.dc.SetBrush(brush)  
                 self.dc.SetPen(pen)  
                 func = self.draw_point_shape  
                 args = ()  
             else:  
                 raise TypeError(_("Unhandled shape type %s") % shapetype)  
128    
129              for index in self.selected_shapes:          Only the given region (a tuple in window coordinates as returned
130                  func(renderparam, index, *args)          by a wxrect's asTuple method) needs to be redrawn. Highlight the
131            shapes given by the ids in selected_shapes in the
132            selected_layer.
133            """
134            return self.render_map_incrementally()
135    
136        def draw_selection_incrementally(self, layer, selected_shapes):
137            """Draw the selected shapes in a emphasized way (i.e.
138            with a special pen and brush.
139            The drawing is performed incrementally, that means every
140            n shapes, the user can have interactions with the map.
141            n is currently fixed to 500.
142    
143            layer -- the layer where the shapes belong to.
144            selected_shapes -- a list of the shape-ids representing the
145                               selected shapes for the given layer.
146            """
147            pen = wxPen(wxBLACK, 3, wxSOLID)
148            brush = wxBrush(wxBLACK, wxCROSS_HATCH)
149    
150            shapetype = layer.ShapeType()
151            useraw, func, param = self.low_level_renderer(layer)
152            args = (pen, brush)
153    
154            # for point shapes we need to find out the properties
155            # to determine the size. Based on table and field,
156            # we can find out the properties for object - see below.
157            if shapetype == SHAPETYPE_POINT:
158                lc = layer.GetClassification()
159                field = layer.GetClassificationColumn()
160                table = layer.ShapeStore().Table()
161    
162            count = 0
163            for index in selected_shapes:
164                count += 1
165                shape = layer.Shape(index)
166    
167                # Get the size of the specific property for this
168                # point
169                if shapetype == SHAPETYPE_POINT:
170                    value = table.ReadValue(shape.ShapeID(), field)
171                    group = lc.FindGroup(value)
172                    size = group.GetProperties().GetSize()
173                    args = (pen, brush, size)
174    
175      def layer_ids(self, layer):              if useraw:
176                    data = shape.RawData()
177                else:
178                    data = shape.Points()
179                func(param, data, *args)
180                if count % 500 == 0:
181                    yield True
182    
183        def layer_shapes(self, layer):
184          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
185    
186          Call the layer's ShapesInRegion method to determine the ids so          Call the layer's ShapesInRegion method to determine the ids so
# Line 377  class ScreenRenderer(MapRenderer): Line 201  class ScreenRenderer(MapRenderer):
201          offx, offy = self.offset          offx, offy = self.offset
202          xs = []          xs = []
203          ys = []          ys = []
204          x, y, width, height = self.update_region          x, y, width, height = self.region
205          for winx, winy in ((x, y), (x + width, y),          for winx, winy in ((x, y), (x + width, y),
206                             (x + width, y + height), (x, y + height)):                             (x + width, y + height), (x, y + height)):
207              px = (winx - offx) / scale              px = (winx - offx) / scale
# Line 397  class ScreenRenderer(MapRenderer): Line 221  class ScreenRenderer(MapRenderer):
221  class ExportRenderer(ScreenRenderer):  class ExportRenderer(ScreenRenderer):
222    
223      honor_visibility = 1      honor_visibility = 1
224        
225      def RenderMap(self, map, region, mapregion,      def __init__(self, *args, **kw):
226                    selected_layer, selected_shapes ):          """Initialize the ExportRenderer.
227    
228            In addition to all parameters of the the ScreenRender
229            constructor, this class requires and additional keyword argument
230            destination_region with a tuple (minx, miny, maxx, maxy) giving
231            the region in dc coordinates which is to contain the map.
232            """
233            self.destination_region = kw["destination_region"]
234            del kw["destination_region"]
235            ScreenRenderer.__init__(self, *args, **kw)
236    
237        def RenderMap(self, selected_layer, selected_shapes):
238          """Render the map.          """Render the map.
239    
240          The rendering device has been specified during initialisation.          The rendering device has been specified during initialisation.
241          The device border distance was set in Thuban.UI.view.OutputTranform().          The device border distance was set in
242                    Thuban.UI.viewport.output_transform().
243    
244          RenderMap renders a frame set (one page frame, one around          RenderMap renders a frame set (one page frame, one around
245          legend/scalebar and one around the map), the map, the legend and the          legend/scalebar and one around the map), the map, the legend and
246          scalebar on the given DC. The map is rendered with the region displayed          the scalebar on the given DC. The map is rendered with the
247          in the canvas view, centered on the area available for map display.          region displayed in the canvas view, centered on the area
248            available for map display.
249          """          """
250            
         self.update_region = region  
251          self.selected_layer = selected_layer          self.selected_layer = selected_layer
252          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
253    
254          # Get some dimensions          # Get some dimensions
255          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
256          self.mapregion = mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
         mminx, mminy, mmaxx, mmaxy = self.mapregion  
257    
258          # Manipulate the offset to position the map          # Manipulate the offset to position the map
259          offx, offy = self.offset          offx, offy = self.offset
260          # 1. Shift to corner of map drawing area          # 1. Shift to corner of map drawing area
261          offx = offx + mminx          offx = offx + mminx
262          offy = offy + mminy          offy = offy + mminy
263    
264          # 2. Center the map on the map drawing area:          # 2. Center the map on the map drawing area:
265          # region identifies the region on the canvas view:          # region identifies the region on the canvas view:
266          # center of map drawing area - half the size of region: rendering origin          # center of map drawing area - half the size of region: rendering origin
267          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
268          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
# Line 437  class ExportRenderer(ScreenRenderer): Line 272  class ExportRenderer(ScreenRenderer):
272          # Draw the map          # Draw the map
273          self.dc.BeginDrawing()          self.dc.BeginDrawing()
274          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
275          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
276                                    urx, ury)                                    urx, ury)
277          self.render_map(map)          self.render_map()
278          self.dc.EndDrawing()          self.dc.EndDrawing()
279    
280          # Draw the rest (frames, legend, scalebar)          # Draw the rest (frames, legend, scalebar)
# Line 450  class ExportRenderer(ScreenRenderer): Line 285  class ExportRenderer(ScreenRenderer):
285          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
286          self.dc.SetFont(font)          self.dc.SetFont(font)
287    
288          self.render_frame(region)          self.render_frame()
289          self.render_legend(map)          self.render_legend()
290          self.render_scalebar(map)          self.render_scalebar()
291          self.dc.EndDrawing()          self.dc.EndDrawing()
292    
293      def render_frame(self, region):      def render_frame(self):
294          """Render the frames for map and legend/scalebar."""          """Render the frames for map and legend/scalebar."""
295    
296          dc = self.dc          dc = self.dc
# Line 464  class ExportRenderer(ScreenRenderer): Line 299  class ExportRenderer(ScreenRenderer):
299    
300          # Dimension stuff          # Dimension stuff
301          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
302          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
303    
304          # Page Frame          # Page Frame
305          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
306            
307          # Map Frame          # Map Frame
308          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
309          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
310            
311          # Legend Frame          # Legend Frame
312          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
313    
# Line 480  class ExportRenderer(ScreenRenderer): Line 315  class ExportRenderer(ScreenRenderer):
315          dc.SetClippingRegion(mmaxx+10,mminy,          dc.SetClippingRegion(mmaxx+10,mminy,
316                               (width-20) - (mmaxx+10), mmaxy-mminy)                               (width-20) - (mmaxx+10), mmaxy-mminy)
317    
318      def render_legend(self, map):      def render_legend(self):
319          """Render the legend on the Map."""          """Render the legend on the Map."""
320    
321          previewer = ClassDataPreviewer()          previewer = ClassDataPreviewer()
# Line 490  class ExportRenderer(ScreenRenderer): Line 325  class ExportRenderer(ScreenRenderer):
325    
326          # Dimension stuff          # Dimension stuff
327          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
328          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
329          textwidth, textheight = dc.GetTextExtent("0")          textwidth, textheight = dc.GetTextExtent("0")
330          iconwidth  = textheight          iconwidth  = textheight
331          iconheight = textheight          iconheight = textheight
332          stepy = textheight+3          stepy = textheight+3
333          dx = 10          dx = 10
334          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
335                                  # 5 pix inside legend frame                                  # 5 pix inside legend frame
336          posy = mminy + 5        # 5 pix inside legend frame          posy = mminy + 5        # 5 pix inside legend frame
337            
338          # Render the legend          # Render the legend
339          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wxBLACK)
340          if map.HasLayers():          if self.map.HasLayers():
341              for l in map.Layers():              layers = self.map.Layers()[:]
342                layers.reverse()
343                for l in layers:
344                  if l.Visible():                  if l.Visible():
345                      # Render title                      # Render title
346                      dc.DrawText(l.Title(), posx, posy)                      dc.DrawText(l.Title(), posx, posy)
347                      posy+=stepy                      posy+=stepy
348                      # Render classification                      if l.HasClassification():
349                      clazz = l.GetClassification()                          # Render classification
350                      shapeType = l.ShapeType()                          clazz = l.GetClassification()
351                      for g in clazz:                          shapeType = l.ShapeType()
352                          if g.IsVisible():                          for g in clazz:
353                              previewer.Draw(dc,                              if g.IsVisible():
354                                  wxRect(posx+dx, posy, iconwidth, iconheight),                                  previewer.Draw(dc,
355                                  g.GetProperties(), shapeType)                                      wxRect(posx+dx, posy,
356                              dc.DrawText(g.GetDisplayText(),                                             iconwidth, iconheight),
357                                          posx+2*dx+iconwidth, posy)                                      g.GetProperties(), shapeType)
358                              posy+=stepy                                  dc.DrawText(g.GetDisplayText(),
359                                                        posx+2*dx+iconwidth, posy)
360      def render_scalebar(self, map):                                  posy+=stepy
361    
362        def render_scalebar(self):
363          """Render the scalebar."""          """Render the scalebar."""
364    
365          scalebar = ScaleBar(map)          scalebar = ScaleBar(self.map)
366    
367          # Dimension stuff          # Dimension stuff
368          width, height = self.dc.GetSizeTuple()          width, height = self.dc.GetSizeTuple()
369          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
370          
371          # Render the scalebar          # Render the scalebar
372          scalebar.DrawScaleBar(self.scale, self.dc,          scalebar.DrawScaleBar(self.scale, self.dc,
373                               (mmaxx+10+5, mmaxy-25),                               (mmaxx+10+5, mmaxy-25),
374                               ((width-15-5) - (mmaxx+10+5),20)                               ((width-15-5) - (mmaxx+10+5),20)
375                              )                              )
Legend:
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