/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 1103 by jonathan, Fri May 30 06:29:25 2003 UTC revision 2551 by jonathan, Thu Jan 27 14:19:41 2005 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, \
26      wxImageFromStream, wxBITMAP_TYPE_BMP      wxBITMAP_TYPE_GIF, wxEmptyImage, wxMask
27    
28  from wxproj import draw_polygon_shape, draw_polygon_init  from wxproj import draw_polygon_shape, draw_polygon_init
 from gdalwarp import ProjectRasterFile  
29    
30  from Thuban.UI.common import Color2wxColour  from Thuban.UI.common import Color2wxColour
31  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
32  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
33    
34  from Thuban.Model.layer import Layer, RasterLayer, \  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
35       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:  
   
     """Class to render a map onto a wxDC"""  
   
     honor_visibility = 1  
36    
37      def __init__(self, dc, scale, offset, resolution = 72.0,  from Thuban.Model.color import Transparent
38                   honor_visibility = None):  import Thuban.Model.resource
         """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  
39    
40          self.dc = dc  from baserenderer import BaseRenderer
         self.scale = scale  
         self.offset = offset  
         if honor_visibility is not None:  
             self.honor_visibility = honor_visibility  
         # store the resolution in pixel/point because it's more useful  
         # later.  
         self.resolution = resolution / 72.0  
   
     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).  
         #  
         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  
41    
42          self.draw_label_layer(map.LabelLayer())  from math import floor
43    
44      def draw_shape_layer(self, layer):  from types import StringType
         scale = self.scale  
         offx, offy = self.offset  
45    
         map_proj = self.map.projection  
         layer_proj = layer.projection  
46    
47          shapetype = layer.ShapeType()  # Map the strings used for the format parameter of the draw_raster_data
48    # method to the appropriate wxWindows constants
49    raster_format_map = {
50        "BMP": wxBITMAP_TYPE_BMP,
51        "JPEG": wxBITMAP_TYPE_JPEG,
52        "PNG": wxBITMAP_TYPE_PNG,
53        "TIFF": wxBITMAP_TYPE_TIF,
54        "GIF": wxBITMAP_TYPE_GIF,
55        }
56    
57          brush = wxTRANSPARENT_BRUSH  class MapRenderer(BaseRenderer):
         pen   = wxTRANSPARENT_PEN  
58    
59          old_prop = None      """Class to render a map onto a wxDC"""
         old_group = None  
         lc = layer.GetClassification()  
         field = lc.GetField()  
         defaultGroup = lc.GetDefaultGroup()  
60    
61        TRANSPARENT_PEN = wxTRANSPARENT_PEN
62        TRANSPARENT_BRUSH = wxTRANSPARENT_BRUSH
63    
64          if shapetype != SHAPETYPE_POINT:      def make_point(self, x, y):
65              polygon_render_param = self.polygon_render_param(layer)          return wxPoint(int(round(x)), int(round(y)))
66    
67          if shapetype == SHAPETYPE_POINT:      def tools_for_property(self, prop):
68              draw_func = lambda i: \          fill = prop.GetFill()
69                     self.draw_point_shape(layer, i)          if fill is Transparent:
70                brush = self.TRANSPARENT_BRUSH
71          else:          else:
72              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  
   
                 prop = group.GetProperties()  
73    
74                  if prop != old_prop:          stroke = prop.GetLineColor()
75                      old_prop = prop          if stroke is Transparent:
76                pen = self.TRANSPARENT_PEN
                     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  
77          else:          else:
78              if data is not None:              pen = wxPen(Color2wxColour(stroke), prop.GetLineWidth(), wxSOLID)
79                  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()  
80    
81      def layer_ids(self, layer):      def low_level_renderer(self, layer):
82          """Return the shape ids of the given layer that have to be drawn.          """Override inherited method to provide more efficient renderers
83    
84          The default implementation simply returns all ids in the layer.          If the underlying data format is not a shapefile or the layer
85          Override in derived classes to be more precise.          contains points shapes, simply use what the inherited method
86            returns.
87    
88            Otherwise, i.e. for arc and polygon use the more efficient
89            wxproj.draw_polygon_shape and its corresponding parameter
90            created with wxproj.draw_polygon_init.
91          """          """
92          return range(layer.NumShapes())          if (layer.ShapeStore().RawShapeFormat() == RAW_SHAPEFILE
93                and layer.ShapeType() in (SHAPETYPE_ARC, SHAPETYPE_POLYGON)):
94      def polygon_render_param(self, layer):              offx, offy = self.offset
95          """Return the low-lever render parameter for the layer"""              return (True, draw_polygon_shape,
96          offx, offy = self.offset                      draw_polygon_init(layer.ShapeStore().Shapefile(),
97          return draw_polygon_init(layer.shapefile, self.dc,                                        self.dc, self.map.projection,
98                                   self.map.projection,                                        layer.projection,
99                                   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  
100          else:          else:
101              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)  
102    
103      def draw_label_layer(self, layer):      def label_font(self):
104          scale = self.scale          return wxFont(int(round(self.resolution * 10)), wxSWISS, wxNORMAL,
105          offx, offy = self.offset                        wxNORMAL)
106    
107        def draw_raster_data(self, x,y, data, format = 'BMP'):
108    
109            mask = None
110            if format == 'RAW':
111                image = wxEmptyImage(data[0], data[1])
112                image.SetData(data[2][0])
113                if data[2][1] is not None:
114                    mask = wxEmptyImage(data[0], data[1])
115                    mask.SetData(data[2][1])
116            else:
117                stream = cStringIO.StringIO(data[2][0])
118                image = wxImageFromStream(stream, raster_format_map[format])
119                if data[2][1] is not None:
120                    stream = cStringIO.StringIO(data[2][1])
121                    mask = wxImageFromStream(stream, raster_format_map[format])
122    
123          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          bitmap = wxBitmapFromImage(image)
         self.dc.SetFont(font)  
124    
125          map_proj = self.map.projection          if mask is None:
126          if map_proj is not None:              self.dc.DrawBitmap(bitmap, int(round(x)), int(round(y)), False)
             forward = map_proj.Forward  
127          else:          else:
128              forward = None              # if we are given a mask object, try to pass it to SetMaskColour,
129                # otherwise assume it's a mask image
130          for label in layer.Labels():              try:
131              x = label.x                  bitmap.SetMask(wxMask(wxBitmapFromImage(mask, 1)))
132              y = label.y                  self.dc.DrawBitmap(bitmap, int(round(x)), int(round(y)), True)
133              text = label.text              except (TypeError):
134              if forward:                  # implement using a mask image
135                  x, y = forward(x, y)                  raise NotImplementedError
             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)  
136    
137    
138  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
139    
140      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
141      honor_visibility = 1      honor_visibility = 1
142        
143      def RenderMap(self, map, region, selected_layer, selected_shapes):      def RenderMap(self, selected_layer, selected_shapes):
144          """Render the map.          """Render the map.
145    
146          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
# Line 326  class ScreenRenderer(MapRenderer): Line 148  class ScreenRenderer(MapRenderer):
148          shapes given by the ids in selected_shapes in the          shapes given by the ids in selected_shapes in the
149          selected_layer.          selected_layer.
150          """          """
         self.update_region = region  
151          self.selected_layer = selected_layer          self.selected_layer = selected_layer
152          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
153          self.render_map(map)          self.render_map()
154    
155      def draw_shape_layer(self, layer):      def RenderMapIncrementally(self):
156          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)  
157    
158              for index in self.selected_shapes:          Only the given region (a tuple in window coordinates as returned
159                  func(renderparam, index, *args)          by a wxrect's asTuple method) needs to be redrawn. Highlight the
160            shapes given by the ids in selected_shapes in the
161            selected_layer.
162            """
163            return self.render_map_incrementally()
164    
165        def draw_selection_incrementally(self, layer, selected_shapes):
166            """Draw the selected shapes in a emphasized way (i.e.
167            with a special pen and brush.
168            The drawing is performed incrementally, that means every
169            n shapes, the user can have interactions with the map.
170            n is currently fixed to 500.
171    
172            layer -- the layer where the shapes belong to.
173            selected_shapes -- a list of the shape-ids representing the
174                               selected shapes for the given layer.
175            """
176            pen = wxPen(wxBLACK, 3, wxSOLID)
177            brush = wxBrush(wxBLACK, wxCROSS_HATCH)
178    
179            shapetype = layer.ShapeType()
180            useraw, func, param = self.low_level_renderer(layer)
181            args = (pen, brush)
182    
183            # for point shapes we need to find out the properties
184            # to determine the size. Based on table and field,
185            # we can find out the properties for object - see below.
186            if shapetype == SHAPETYPE_POINT:
187                lc = layer.GetClassification()
188                field = layer.GetClassificationColumn()
189                table = layer.ShapeStore().Table()
190    
191            count = 0
192            for index in selected_shapes:
193                count += 1
194                shape = layer.Shape(index)
195    
196                # Get the size of the specific property for this
197                # point
198                if shapetype == SHAPETYPE_POINT and field is not None:
199                    value = table.ReadValue(shape.ShapeID(), field)
200                    group = lc.FindGroup(value)
201                    size = group.GetProperties().GetSize()
202                    args = (pen, brush, size)
203    
204                if useraw:
205                    data = shape.RawData()
206                else:
207                    data = shape.Points()
208                func(param, data, *args)
209                if count % 500 == 0:
210                    yield True
211    
212      def layer_ids(self, layer):      def layer_shapes(self, layer):
213          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
214    
215          Call the layer's ShapesInRegion method to determine the ids so          Call the layer's ShapesInRegion method to determine the ids so
# Line 381  class ScreenRenderer(MapRenderer): Line 230  class ScreenRenderer(MapRenderer):
230          offx, offy = self.offset          offx, offy = self.offset
231          xs = []          xs = []
232          ys = []          ys = []
233          x, y, width, height = self.update_region          x, y, width, height = self.region
234          for winx, winy in ((x, y), (x + width, y),          for winx, winy in ((x, y), (x + width, y),
235                             (x + width, y + height), (x, y + height)):                             (x + width, y + height), (x, y + height)):
236              px = (winx - offx) / scale              px = (winx - offx) / scale
# Line 401  class ScreenRenderer(MapRenderer): Line 250  class ScreenRenderer(MapRenderer):
250  class ExportRenderer(ScreenRenderer):  class ExportRenderer(ScreenRenderer):
251    
252      honor_visibility = 1      honor_visibility = 1
253        
254      def RenderMap(self, map, region, mapregion,      def __init__(self, *args, **kw):
255                    selected_layer, selected_shapes ):          """Initialize the ExportRenderer.
256    
257            In addition to all parameters of the the ScreenRender
258            constructor, this class requires and additional keyword argument
259            destination_region with a tuple (minx, miny, maxx, maxy) giving
260            the region in dc coordinates which is to contain the map.
261            """
262            self.destination_region = kw["destination_region"]
263            del kw["destination_region"]
264            ScreenRenderer.__init__(self, *args, **kw)
265    
266        def RenderMap(self, selected_layer, selected_shapes):
267          """Render the map.          """Render the map.
268    
269          The rendering device has been specified during initialisation.          The rendering device has been specified during initialisation.
270          The device border distance was set in Thuban.UI.view.OutputTranform().          The device border distance was set in
271                    Thuban.UI.viewport.output_transform().
272    
273          RenderMap renders a frame set (one page frame, one around          RenderMap renders a frame set (one page frame, one around
274          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
275          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
276          in the canvas view, centered on the area available for map display.          region displayed in the canvas view, centered on the area
277            available for map display.
278          """          """
279            
         self.update_region = region  
280          self.selected_layer = selected_layer          self.selected_layer = selected_layer
281          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
282    
283          # Get some dimensions          # Get some dimensions
284          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
285          self.mapregion = mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
         mminx, mminy, mmaxx, mmaxy = self.mapregion  
286    
287          # Manipulate the offset to position the map          # Manipulate the offset to position the map
288          offx, offy = self.offset          offx, offy = self.offset
289          # 1. Shift to corner of map drawing area          # 1. Shift to corner of map drawing area
290          offx = offx + mminx          offx = offx + mminx
291          offy = offy + mminy          offy = offy + mminy
292    
293          # 2. Center the map on the map drawing area:          # 2. Center the map on the map drawing area:
294          # region identifies the region on the canvas view:          # region identifies the region on the canvas view:
295          # center of map drawing area - half the size of region: rendering origin          # center of map drawing area - half the size of region: rendering origin
296          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
297          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
298    
299          self.offset = (offx+self.shiftx, offy+self.shifty)          self.offset = (offx+self.shiftx, offy+self.shifty)
300            self.region = (llx + self.shiftx, lly + self.shifty, urx, ury)
301    
302          # Draw the map          # Draw the map
303          self.dc.BeginDrawing()          self.dc.BeginDrawing()
304          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
305          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
306                                    urx, ury)                                    urx, ury)
307          self.render_map(map)          self.render_map()
308          self.dc.EndDrawing()          self.dc.EndDrawing()
309    
310          # Draw the rest (frames, legend, scalebar)          # Draw the rest (frames, legend, scalebar)
# Line 454  class ExportRenderer(ScreenRenderer): Line 315  class ExportRenderer(ScreenRenderer):
315          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
316          self.dc.SetFont(font)          self.dc.SetFont(font)
317    
318          self.render_frame(region)          self.render_frame()
319          self.render_legend(map)          self.render_legend()
320          self.render_scalebar(map)          self.render_scalebar()
321          self.dc.EndDrawing()          self.dc.EndDrawing()
322    
323      def render_frame(self, region):      def render_frame(self):
324          """Render the frames for map and legend/scalebar."""          """Render the frames for map and legend/scalebar."""
325    
326          dc = self.dc          dc = self.dc
# Line 468  class ExportRenderer(ScreenRenderer): Line 329  class ExportRenderer(ScreenRenderer):
329    
330          # Dimension stuff          # Dimension stuff
331          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
332          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
333    
334          # Page Frame          # Page Frame
335          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
336            
337          # Map Frame          # Map Frame
338          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
339          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
340            
341          # Legend Frame          # Legend Frame
342          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
343    
# Line 484  class ExportRenderer(ScreenRenderer): Line 345  class ExportRenderer(ScreenRenderer):
345          dc.SetClippingRegion(mmaxx+10,mminy,          dc.SetClippingRegion(mmaxx+10,mminy,
346                               (width-20) - (mmaxx+10), mmaxy-mminy)                               (width-20) - (mmaxx+10), mmaxy-mminy)
347    
348      def render_legend(self, map):      def render_legend(self):
349          """Render the legend on the Map."""          """Render the legend on the Map."""
350    
351          previewer = ClassDataPreviewer()          previewer = ClassDataPreviewer()
# Line 494  class ExportRenderer(ScreenRenderer): Line 355  class ExportRenderer(ScreenRenderer):
355    
356          # Dimension stuff          # Dimension stuff
357          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
358          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
359          textwidth, textheight = dc.GetTextExtent("0")          textwidth, textheight = dc.GetTextExtent("0")
360          iconwidth  = textheight          iconwidth  = textheight
361          iconheight = textheight          iconheight = textheight
362          stepy = textheight+3          stepy = textheight+3
363          dx = 10          dx = 10
364          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
365                                  # 5 pix inside legend frame                                  # 5 pix inside legend frame
366          posy = mminy + 5        # 5 pix inside legend frame          posy = mminy + 5        # 5 pix inside legend frame
367            
368          # Render the legend          # Render the legend
369          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wxBLACK)
370          if map.HasLayers():          if self.map.HasLayers():
371              for l in map.Layers():              layers = self.map.Layers()[:]
372                layers.reverse()
373                for l in layers:
374                  if l.Visible():                  if l.Visible():
375                      # Render title                      # Render title
376                      dc.DrawText(l.Title(), posx, posy)                      dc.DrawText(l.Title(), posx, posy)
377                      posy+=stepy                      posy+=stepy
378                      # Render classification                      if l.HasClassification():
379                      clazz = l.GetClassification()                          # Render classification
380                      shapeType = l.ShapeType()                          clazz = l.GetClassification()
381                      for g in clazz:                          shapeType = l.ShapeType()
382                          if g.IsVisible():                          for g in clazz:
383                              previewer.Draw(dc,                              if g.IsVisible():
384                                  wxRect(posx+dx, posy, iconwidth, iconheight),                                  previewer.Draw(dc,
385                                  g.GetProperties(), shapeType)                                      wxRect(posx+dx, posy,
386                              dc.DrawText(g.GetDisplayText(),                                             iconwidth, iconheight),
387                                          posx+2*dx+iconwidth, posy)                                      g.GetProperties(), shapeType)
388                              posy+=stepy                                  dc.DrawText(g.GetDisplayText(),
389                                                        posx+2*dx+iconwidth, posy)
390      def render_scalebar(self, map):                                  posy+=stepy
391    
392        def render_scalebar(self):
393          """Render the scalebar."""          """Render the scalebar."""
394    
395          scalebar = ScaleBar(map)          scalebar = ScaleBar(self.map)
396    
397          # Dimension stuff          # Dimension stuff
398          width, height = self.dc.GetSizeTuple()          width, height = self.dc.GetSizeTuple()
399          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
400          
401          # Render the scalebar          # Render the scalebar
402          scalebar.DrawScaleBar(self.scale, self.dc,          scalebar.DrawScaleBar(self.scale, self.dc,
403                               (mmaxx+10+5, mmaxy-25),                               (mmaxx+10+5, mmaxy-25),
404                               ((width-15-5) - (mmaxx+10+5),20)                               ((width-15-5) - (mmaxx+10+5),20)
405                              )                              )
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