/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
ViewVC logotype

Diff of /branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1165 by jonathan, Thu Jun 12 12:42:10 2003 UTC revision 1937 by bh, Tue Nov 11 18:16:42 2003 UTC
# Line 7  Line 7 
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
9    
10    from __future__ import generators
11    
12  __version__ = "$Revision$"  __version__ = "$Revision$"
13    # $Source$
14    # $Id$
15    
16  import cStringIO  import cStringIO
17    
18  from Thuban import _  from Thuban import _
19    
20  from wxPython.wx import wxMemoryDC, wxEmptyBitmap, \  from wxPython.wx import wxPoint, wxRect, wxPen, wxBrush, wxFont, \
     wxPoint, wxRect, wxPen, wxBrush, wxFont, \  
21      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \
22      wxBLACK_PEN, wxRED_PEN, wxBLACK, \      wxBLACK_PEN, wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \
23      wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \      wxBitmapFromImage, wxImageFromStream, wxBITMAP_TYPE_BMP, wxBITMAP_TYPE_JPEG
     wxBitmap, wxImageFromBitmap, wxBitmapFromImage, \  
     wxImageFromStream, wxBITMAP_TYPE_BMP  
24    
25  from wxproj import draw_polygon_shape, draw_polygon_init  from wxproj import draw_polygon_shape, draw_polygon_init
 from gdalwarp import ProjectRasterFile  
26    
27  from Thuban.UI.common import Color2wxColour  from Thuban.UI.common import Color2wxColour
28  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
29  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
30    
31  from Thuban.Model.layer import Layer, RasterLayer, \  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
32       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  
33    
34  from Thuban.Model.classification import Classification  from Thuban.Model.color import Transparent
 from Thuban.Model.color import Color  
35  import Thuban.Model.resource  import Thuban.Model.resource
36    
37  class MapRenderer:  from baserenderer import BaseRenderer
   
     """Class to render a map onto a wxDC"""  
   
     honor_visibility = 1  
38    
     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  
39    
40          self.dc = dc  # Map the strings used for the format parameter of the draw_raster_data
41          self.scale = scale  # method to the appropriate wxWindows constants
42          self.offset = offset  raster_format_map = {
43          if honor_visibility is not None:      "BMP": wxBITMAP_TYPE_BMP,
44              self.honor_visibility = honor_visibility      "JPEG": wxBITMAP_TYPE_JPEG,
45          # 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). 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  
46    
47          self.draw_label_layer(map.LabelLayer())  class MapRenderer(BaseRenderer):
48    
49      def draw_shape_layer(self, layer):      """Class to render a map onto a wxDC"""
         scale = self.scale  
         offx, offy = self.offset  
50    
51          map_proj = self.map.projection      TRANSPARENT_PEN = wxTRANSPARENT_PEN
52          layer_proj = layer.projection      TRANSPARENT_BRUSH = wxTRANSPARENT_BRUSH
53    
54          shapetype = layer.ShapeType()      def make_point(self, x, y):
55            return wxPoint(int(round(x)), int(round(y)))
56    
57          brush = wxTRANSPARENT_BRUSH      def tools_for_property(self, prop):
58          pen   = wxTRANSPARENT_PEN          fill = prop.GetFill()
59            if fill is Transparent:
60          old_prop = None              brush = self.TRANSPARENT_BRUSH
         old_group = None  
         lc = layer.GetClassification()  
         field = lc.GetField()  
         defaultGroup = lc.GetDefaultGroup()  
   
   
         if shapetype != SHAPETYPE_POINT:  
             polygon_render_param = self.polygon_render_param(layer)  
   
         if shapetype == SHAPETYPE_POINT:  
             draw_func = lambda i: \  
                    self.draw_point_shape(layer, i)  
61          else:          else:
62              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()  
   
                 if prop != old_prop:  
                     old_prop = prop  
63    
64                      if shapetype == SHAPETYPE_ARC:          stroke = prop.GetLineColor()
65                          fill = Color.Transparent          if stroke is Transparent:
66                      else:              pen = self.TRANSPARENT_PEN
                         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  
67          else:          else:
68              if data is not None:              pen = wxPen(Color2wxColour(stroke), prop.GetLineWidth(), wxSOLID)
69                  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()  
70    
71      def layer_ids(self, layer):      def low_level_renderer(self, layer):
72          """Return the shape ids of the given layer that have to be drawn.          """Override inherited method to provide more efficient renderers
73    
74          The default implementation simply returns all ids in the layer.          If the underlying data format is not a shapefile or the layer
75          Override in derived classes to be more precise.          contains points shapes, simply use what the inherited method
76            returns.
77    
78            Otherwise, i.e. for arc and polygon use the more efficient
79            wxproj.draw_polygon_shape and its corresponding parameter
80            created with wxproj.draw_polygon_init.
81          """          """
82          return range(layer.NumShapes())          if (layer.ShapeStore().RawShapeFormat() == RAW_SHAPEFILE
83                and layer.ShapeType() in (SHAPETYPE_ARC, SHAPETYPE_POLYGON)):
84      def polygon_render_param(self, layer):              offx, offy = self.offset
85          """Return the low-lever render parameter for the layer"""              return (True, draw_polygon_shape,
86          offx, offy = self.offset                      draw_polygon_init(layer.ShapeStore().Shapefile(),
87          return draw_polygon_init(layer.shapefile, self.dc,                                        self.dc, self.map.projection,
88                                   self.map.projection,                                        layer.projection,
89                                   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  
90          else:          else:
91              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)  
92    
93      def draw_label_layer(self, layer):      def label_font(self):
94          scale = self.scale          return wxFont(int(round(self.resolution * 10)), wxSWISS, wxNORMAL,
95          offx, offy = self.offset                        wxNORMAL)
96    
97          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)      def draw_raster_data(self, data, format = 'BMP'):
98          self.dc.SetFont(font)          stream = cStringIO.StringIO(data)
99            image = wxImageFromStream(stream, raster_format_map[format])
100          map_proj = self.map.projection          bitmap = wxBitmapFromImage(image)
101          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)  
102    
103    
104  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
105    
106      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
107      honor_visibility = 1      honor_visibility = 1
108        
109      def RenderMap(self, map, region, selected_layer, selected_shapes):      def RenderMap(self, selected_layer, selected_shapes):
110          """Render the map.          """Render the map.
111    
112          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
# Line 330  class ScreenRenderer(MapRenderer): Line 114  class ScreenRenderer(MapRenderer):
114          shapes given by the ids in selected_shapes in the          shapes given by the ids in selected_shapes in the
115          selected_layer.          selected_layer.
116          """          """
         self.update_region = region  
117          self.selected_layer = selected_layer          self.selected_layer = selected_layer
118          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
119          self.render_map(map)          self.render_map()
120    
121      def draw_shape_layer(self, layer):      def RenderMapIncrementally(self):
122          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)  
123    
124              for index in self.selected_shapes:          Only the given region (a tuple in window coordinates as returned
125                  func(renderparam, index, *args)          by a wxrect's asTuple method) needs to be redrawn. Highlight the
126            shapes given by the ids in selected_shapes in the
127            selected_layer.
128            """
129            return self.render_map_incrementally()
130    
131        def draw_selection_incrementally(self, layer, selected_shapes):
132            pen = wxPen(wxBLACK, 3, wxSOLID)
133            brush = wxBrush(wxBLACK, wxCROSS_HATCH)
134    
135      def layer_ids(self, layer):          shapetype = layer.ShapeType()
136            useraw, func, param = self.low_level_renderer(layer)
137            args = (pen, brush)
138            count = 0
139            for index in selected_shapes:
140                count += 1
141                shape = layer.Shape(index)
142                if useraw:
143                    data = shape.RawData()
144                else:
145                    data = shape.Points()
146                func(param, data, *args)
147                if count % 500 == 0:
148                    yield True
149    
150        def layer_shapes(self, layer):
151          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
152    
153          Call the layer's ShapesInRegion method to determine the ids so          Call the layer's ShapesInRegion method to determine the ids so
# Line 385  class ScreenRenderer(MapRenderer): Line 168  class ScreenRenderer(MapRenderer):
168          offx, offy = self.offset          offx, offy = self.offset
169          xs = []          xs = []
170          ys = []          ys = []
171          x, y, width, height = self.update_region          x, y, width, height = self.region
172          for winx, winy in ((x, y), (x + width, y),          for winx, winy in ((x, y), (x + width, y),
173                             (x + width, y + height), (x, y + height)):                             (x + width, y + height), (x, y + height)):
174              px = (winx - offx) / scale              px = (winx - offx) / scale
# Line 405  class ScreenRenderer(MapRenderer): Line 188  class ScreenRenderer(MapRenderer):
188  class ExportRenderer(ScreenRenderer):  class ExportRenderer(ScreenRenderer):
189    
190      honor_visibility = 1      honor_visibility = 1
191        
192      def RenderMap(self, map, region, mapregion,      def __init__(self, *args, **kw):
193                    selected_layer, selected_shapes ):          """Initialize the ExportRenderer.
194    
195            In addition to all parameters of the the ScreenRender
196            constructor, this class requires and additional keyword argument
197            destination_region with a tuple (minx, miny, maxx, maxy) giving
198            the region in dc coordinates which is to contain the map.
199            """
200            self.destination_region = kw["destination_region"]
201            del kw["destination_region"]
202            ScreenRenderer.__init__(self, *args, **kw)
203    
204        def RenderMap(self, selected_layer, selected_shapes):
205          """Render the map.          """Render the map.
206    
207          The rendering device has been specified during initialisation.          The rendering device has been specified during initialisation.
208          The device border distance was set in Thuban.UI.view.OutputTranform().          The device border distance was set in
209                    Thuban.UI.viewport.output_transform().
210    
211          RenderMap renders a frame set (one page frame, one around          RenderMap renders a frame set (one page frame, one around
212          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
213          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
214          in the canvas view, centered on the area available for map display.          region displayed in the canvas view, centered on the area
215            available for map display.
216          """          """
217            
         self.update_region = region  
218          self.selected_layer = selected_layer          self.selected_layer = selected_layer
219          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
220    
221          # Get some dimensions          # Get some dimensions
222          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
223          self.mapregion = mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
         mminx, mminy, mmaxx, mmaxy = self.mapregion  
224    
225          # Manipulate the offset to position the map          # Manipulate the offset to position the map
226          offx, offy = self.offset          offx, offy = self.offset
227          # 1. Shift to corner of map drawing area          # 1. Shift to corner of map drawing area
228          offx = offx + mminx          offx = offx + mminx
229          offy = offy + mminy          offy = offy + mminy
230    
231          # 2. Center the map on the map drawing area:          # 2. Center the map on the map drawing area:
232          # region identifies the region on the canvas view:          # region identifies the region on the canvas view:
233          # center of map drawing area - half the size of region: rendering origin          # center of map drawing area - half the size of region: rendering origin
234          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
235          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
# Line 445  class ExportRenderer(ScreenRenderer): Line 239  class ExportRenderer(ScreenRenderer):
239          # Draw the map          # Draw the map
240          self.dc.BeginDrawing()          self.dc.BeginDrawing()
241          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
242          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
243                                    urx, ury)                                    urx, ury)
244          self.render_map(map)          self.render_map()
245          self.dc.EndDrawing()          self.dc.EndDrawing()
246    
247          # Draw the rest (frames, legend, scalebar)          # Draw the rest (frames, legend, scalebar)
# Line 458  class ExportRenderer(ScreenRenderer): Line 252  class ExportRenderer(ScreenRenderer):
252          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
253          self.dc.SetFont(font)          self.dc.SetFont(font)
254    
255          self.render_frame(region)          self.render_frame()
256          self.render_legend(map)          self.render_legend()
257          self.render_scalebar(map)          self.render_scalebar()
258          self.dc.EndDrawing()          self.dc.EndDrawing()
259    
260      def render_frame(self, region):      def render_frame(self):
261          """Render the frames for map and legend/scalebar."""          """Render the frames for map and legend/scalebar."""
262    
263          dc = self.dc          dc = self.dc
# Line 472  class ExportRenderer(ScreenRenderer): Line 266  class ExportRenderer(ScreenRenderer):
266    
267          # Dimension stuff          # Dimension stuff
268          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
269          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
270    
271          # Page Frame          # Page Frame
272          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
273            
274          # Map Frame          # Map Frame
275          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
276          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
277            
278          # Legend Frame          # Legend Frame
279          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
280    
# Line 488  class ExportRenderer(ScreenRenderer): Line 282  class ExportRenderer(ScreenRenderer):
282          dc.SetClippingRegion(mmaxx+10,mminy,          dc.SetClippingRegion(mmaxx+10,mminy,
283                               (width-20) - (mmaxx+10), mmaxy-mminy)                               (width-20) - (mmaxx+10), mmaxy-mminy)
284    
285      def render_legend(self, map):      def render_legend(self):
286          """Render the legend on the Map."""          """Render the legend on the Map."""
287    
288          previewer = ClassDataPreviewer()          previewer = ClassDataPreviewer()
# Line 498  class ExportRenderer(ScreenRenderer): Line 292  class ExportRenderer(ScreenRenderer):
292    
293          # Dimension stuff          # Dimension stuff
294          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
295          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
296          textwidth, textheight = dc.GetTextExtent("0")          textwidth, textheight = dc.GetTextExtent("0")
297          iconwidth  = textheight          iconwidth  = textheight
298          iconheight = textheight          iconheight = textheight
299          stepy = textheight+3          stepy = textheight+3
300          dx = 10          dx = 10
301          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
302                                  # 5 pix inside legend frame                                  # 5 pix inside legend frame
303          posy = mminy + 5        # 5 pix inside legend frame          posy = mminy + 5        # 5 pix inside legend frame
304            
305          # Render the legend          # Render the legend
306          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wxBLACK)
307          if map.HasLayers():          if self.map.HasLayers():
308              for l in map.Layers():              layers = self.map.Layers()[:]
309                layers.reverse()
310                for l in layers:
311                  if l.Visible():                  if l.Visible():
312                      # Render title                      # Render title
313                      dc.DrawText(l.Title(), posx, posy)                      dc.DrawText(l.Title(), posx, posy)
314                      posy+=stepy                      posy+=stepy
315                      # Render classification                      if l.HasClassification():
316                      clazz = l.GetClassification()                          # Render classification
317                      shapeType = l.ShapeType()                          clazz = l.GetClassification()
318                      for g in clazz:                          shapeType = l.ShapeType()
319                          if g.IsVisible():                          for g in clazz:
320                              previewer.Draw(dc,                              if g.IsVisible():
321                                  wxRect(posx+dx, posy, iconwidth, iconheight),                                  previewer.Draw(dc,
322                                  g.GetProperties(), shapeType)                                      wxRect(posx+dx, posy,
323                              dc.DrawText(g.GetDisplayText(),                                             iconwidth, iconheight),
324                                          posx+2*dx+iconwidth, posy)                                      g.GetProperties(), shapeType)
325                              posy+=stepy                                  dc.DrawText(g.GetDisplayText(),
326                                                        posx+2*dx+iconwidth, posy)
327      def render_scalebar(self, map):                                  posy+=stepy
328    
329        def render_scalebar(self):
330          """Render the scalebar."""          """Render the scalebar."""
331    
332          scalebar = ScaleBar(map)          scalebar = ScaleBar(self.map)
333    
334          # Dimension stuff          # Dimension stuff
335          width, height = self.dc.GetSizeTuple()          width, height = self.dc.GetSizeTuple()
336          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
337          
338          # Render the scalebar          # Render the scalebar
339          scalebar.DrawScaleBar(self.scale, self.dc,          scalebar.DrawScaleBar(self.scale, self.dc,
340                               (mmaxx+10+5, mmaxy-25),                               (mmaxx+10+5, mmaxy-25),
341                               ((width-15-5) - (mmaxx+10+5),20)                               ((width-15-5) - (mmaxx+10+5),20)
342                              )                              )
Legend:
Removed from v.1165  
changed lines
  Added in v.1937
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26