/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 1219 by bh, Mon Jun 16 17:42:54 2003 UTC revision 2454 by bh, Mon Dec 13 18:26:11 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  
35    
36  from Thuban.Model.classification import Classification  from Thuban.Model.color import Transparent
 from Thuban.Model.color import Color  
37  import Thuban.Model.resource  import Thuban.Model.resource
38    
39  class MapRenderer:  from baserenderer import BaseRenderer
   
     """Class to render a map onto a wxDC"""  
   
     honor_visibility = 1  
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  
   
         if self.scale == 0:  
             return  
   
         #  
         # This is only a good optimization if there is only one  
         # raster layer and the image covers the entire window (as  
         # it currently does). We note if there is a raster layer  
         # and only begin drawing layers once we have drawn it.  
         # That way we avoid drawing layers that won't be seen.  
         #  
         for layer in map.Layers():  
             if isinstance(layer, RasterLayer) and layer.Visible():  
                 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) \  
                     and Thuban.Model.resource.has_gdal_support():  
                     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)  
   
         table = layer.ShapeStore().Table()  
         for i in self.layer_ids(layer):  
   
             if field is None:  
                 group = defaultGroup  
             else:  
                 record = table.ReadRowAsDict(i)  
                 assert record is not None  
                 group = lc.FindGroup(record[field])  
   
   
             if not group.IsVisible():  
                 continue  
   
68    
69              # don't recreate new objects if they are the same as before          stroke = prop.GetLineColor()
70              if group is not old_group:          if stroke is Transparent:
71                  old_group = group              pen = self.TRANSPARENT_PEN
   
                 prop = group.GetProperties()  
   
                 if prop != old_prop:  
                     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 + " "  
   
         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,  
                 (xmin, ymin, xmax, ymax),  
                 "", (width, height))  
         except IOError, (strerr):  
             print strerr  
         except (AttributeError, 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.ShapeStore().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 331  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 386  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 406  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
269    
270          self.offset = (offx+self.shiftx, offy+self.shifty)          self.offset = (offx+self.shiftx, offy+self.shifty)
271            self.region = (llx + self.shiftx, lly + self.shifty, urx, ury)
272    
273          # Draw the map          # Draw the map
274          self.dc.BeginDrawing()          self.dc.BeginDrawing()
275          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
276          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
277                                    urx, ury)                                    urx, ury)
278          self.render_map(map)          self.render_map()
279          self.dc.EndDrawing()          self.dc.EndDrawing()
280    
281          # Draw the rest (frames, legend, scalebar)          # Draw the rest (frames, legend, scalebar)
# Line 459  class ExportRenderer(ScreenRenderer): Line 286  class ExportRenderer(ScreenRenderer):
286          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
287          self.dc.SetFont(font)          self.dc.SetFont(font)
288    
289          self.render_frame(region)          self.render_frame()
290          self.render_legend(map)          self.render_legend()
291          self.render_scalebar(map)          self.render_scalebar()
292          self.dc.EndDrawing()          self.dc.EndDrawing()
293    
294      def render_frame(self, region):      def render_frame(self):
295          """Render the frames for map and legend/scalebar."""          """Render the frames for map and legend/scalebar."""
296    
297          dc = self.dc          dc = self.dc
# Line 473  class ExportRenderer(ScreenRenderer): Line 300  class ExportRenderer(ScreenRenderer):
300    
301          # Dimension stuff          # Dimension stuff
302          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
303          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
304    
305          # Page Frame          # Page Frame
306          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
307            
308          # Map Frame          # Map Frame
309          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
310          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
311            
312          # Legend Frame          # Legend Frame
313          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
314    
# Line 489  class ExportRenderer(ScreenRenderer): Line 316  class ExportRenderer(ScreenRenderer):
316          dc.SetClippingRegion(mmaxx+10,mminy,          dc.SetClippingRegion(mmaxx+10,mminy,
317                               (width-20) - (mmaxx+10), mmaxy-mminy)                               (width-20) - (mmaxx+10), mmaxy-mminy)
318    
319      def render_legend(self, map):      def render_legend(self):
320          """Render the legend on the Map."""          """Render the legend on the Map."""
321    
322          previewer = ClassDataPreviewer()          previewer = ClassDataPreviewer()
# Line 499  class ExportRenderer(ScreenRenderer): Line 326  class ExportRenderer(ScreenRenderer):
326    
327          # Dimension stuff          # Dimension stuff
328          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
329          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
330          textwidth, textheight = dc.GetTextExtent("0")          textwidth, textheight = dc.GetTextExtent("0")
331          iconwidth  = textheight          iconwidth  = textheight
332          iconheight = textheight          iconheight = textheight
333          stepy = textheight+3          stepy = textheight+3
334          dx = 10          dx = 10
335          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
336                                  # 5 pix inside legend frame                                  # 5 pix inside legend frame
337          posy = mminy + 5        # 5 pix inside legend frame          posy = mminy + 5        # 5 pix inside legend frame
338            
339          # Render the legend          # Render the legend
340          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wxBLACK)
341          if map.HasLayers():          if self.map.HasLayers():
342              for l in map.Layers():              layers = self.map.Layers()[:]
343                layers.reverse()
344                for l in layers:
345                  if l.Visible():                  if l.Visible():
346                      # Render title                      # Render title
347                      dc.DrawText(l.Title(), posx, posy)                      dc.DrawText(l.Title(), posx, posy)
348                      posy+=stepy                      posy+=stepy
349                      # Render classification                      if l.HasClassification():
350                      clazz = l.GetClassification()                          # Render classification
351                      shapeType = l.ShapeType()                          clazz = l.GetClassification()
352                      for g in clazz:                          shapeType = l.ShapeType()
353                          if g.IsVisible():                          for g in clazz:
354                              previewer.Draw(dc,                              if g.IsVisible():
355                                  wxRect(posx+dx, posy, iconwidth, iconheight),                                  previewer.Draw(dc,
356                                  g.GetProperties(), shapeType)                                      wxRect(posx+dx, posy,
357                              dc.DrawText(g.GetDisplayText(),                                             iconwidth, iconheight),
358                                          posx+2*dx+iconwidth, posy)                                      g.GetProperties(), shapeType)
359                              posy+=stepy                                  dc.DrawText(g.GetDisplayText(),
360                                                        posx+2*dx+iconwidth, posy)
361      def render_scalebar(self, map):                                  posy+=stepy
362    
363        def render_scalebar(self):
364          """Render the scalebar."""          """Render the scalebar."""
365    
366          scalebar = ScaleBar(map)          scalebar = ScaleBar(self.map)
367    
368          # Dimension stuff          # Dimension stuff
369          width, height = self.dc.GetSizeTuple()          width, height = self.dc.GetSizeTuple()
370          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
371          
372          # Render the scalebar          # Render the scalebar
373          scalebar.DrawScaleBar(self.scale, self.dc,          scalebar.DrawScaleBar(self.scale, self.dc,
374                               (mmaxx+10+5, mmaxy-25),                               (mmaxx+10+5, mmaxy-25),
375                               ((width-15-5) - (mmaxx+10+5),20)                               ((width-15-5) - (mmaxx+10+5),20)
376                              )                              )
Legend:
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