/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/renderer.py
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revision 394 by jonathan, Mon Feb 10 15:27:13 2003 UTC revision 2618 by jonathan, Fri May 6 14:18:31 2005 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002 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]> (2003)
5    # 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
18    
19  from wxPython.wx import wxPoint, wxColour, wxPen, wxBrush, wxFont, \  import array
      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \  
      wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL  
20    
21  from wxproj import draw_polygon_shape  import traceback
22    
23  from Thuban import _  from Thuban import _
24    
25  from Thuban.Model.layer import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \  from wxPython.wx import wxPoint, wxRect, wxPen, wxBrush, wxFont, \
26       SHAPETYPE_POINT      wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \
27  from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \      wxBLACK_PEN, wxBLACK, wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \
28       ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE      wxBitmapFromImage, wxImageFromStream, wxBITMAP_TYPE_BMP, \
29        wxBITMAP_TYPE_JPEG, wxBITMAP_TYPE_PNG, wxBITMAP_TYPE_TIF, \
30        wxBITMAP_TYPE_GIF, wxEmptyImage, wxMask, wxBitmapFromBits
31    
32  from Thuban.Model.classification import Classification  from wxproj import draw_polygon_shape, draw_polygon_init
33    
34    from Thuban.UI.common import Color2wxColour
35    from Thuban.UI.classifier import ClassDataPreviewer
36    from Thuban.UI.scalebar import ScaleBar
37    
38  class MapRenderer:  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
39         SHAPETYPE_POINT, RAW_SHAPEFILE
40    
41      """Class to render a map onto a wxDC"""  from Thuban.Model.color import Transparent
42    import Thuban.Model.resource
43    
44      honor_visibility = 1  from baserenderer import BaseRenderer
45    
46      def __init__(self, dc, scale, offset, resolution = 72.0,  from math import floor
                  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  
         self.dc = dc  
         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  
         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():  
                 self.draw_shape_layer(layer)  
         self.draw_label_layer(map.LabelLayer())  
47    
48      def draw_shape_layer(self, layer):  from types import StringType
         scale = self.scale  
         offx, offy = self.offset  
49    
50          map_proj = self.map.projection  from Thuban.version import versions
         layer_proj = layer.projection  
51    
52          shapetype = layer.ShapeType()  if Thuban.Model.resource.has_gdal_support():
53        from gdalwarp import ProjectRasterFile
54    
         brush = wxTRANSPARENT_BRUSH  
         pen   = wxTRANSPARENT_PEN  
55    
56          old_prop = None  # Map the strings used for the format parameter of the draw_raster_data
57          for i in self.layer_ids(layer):  # method to the appropriate wxWindows constants
58              value = None  raster_format_map = {
59              shape = layer.Shape(i)      "BMP": wxBITMAP_TYPE_BMP,
60              lc = layer.classification      "JPEG": wxBITMAP_TYPE_JPEG,
61              field = lc.field      "PNG": wxBITMAP_TYPE_PNG,
62        "TIFF": wxBITMAP_TYPE_TIF,
63              if field is not None:      "GIF": wxBITMAP_TYPE_GIF,
64                  record = layer.table.read_record(i)      }
                 if record is not None:  
                     value = record[field]  
   
             #  
             # if the above statements fail 'value' should  
             # be null, at which point this call will  
             # at least retreive the NullData  
             #  
             prop = lc.GetProperties(value)  
   
             if prop != old_prop:  
                 old_prop = prop  
   
                 if shapetype == SHAPETYPE_ARC:  
                     fill = None  
                 else:  
                     fill = prop.GetFill()  
       
                 if fill is None:  
                     brush = wxTRANSPARENT_BRUSH  
                 else:  
                     color = wxColour(fill.red * 255,  
                                      fill.green * 255,  
                                      fill.blue * 255)  
                     brush = wxBrush(color, wxSOLID)  
       
                 stroke = prop.GetStroke()  
                 stroke_width = prop.GetStrokeWidth()  
                 if stroke is None:  
                     pen = wxTRANSPARENT_PEN  
                 else:  
                     color = wxColour(stroke.red * 255,  
                                      stroke.green * 255,  
                                      stroke.blue * 255)  
                     pen = wxPen(color, stroke_width, wxSOLID)  
       
             if shapetype == SHAPETYPE_POINT:  
                 self.dc.SetBrush(brush)  
                 self.dc.SetPen(pen)  
                 self.draw_point_shape(layer, i)  
             else:  
                 self.draw_polygon_shape(layer, i, pen, brush)  
65    
66      def layer_ids(self, layer):  class MapRenderer(BaseRenderer):
         """Return the shape ids of the given layer that have to be drawn.  
           
         The default implementation simply returns all ids in the layer.  
         Override in derived classes to be more precise.  
         """  
         return range(layer.NumShapes())  
67    
68      def draw_polygon_shape(self, layer, index, pen, brush):      """Class to render a map onto a wxDC"""
         offx, offy = self.offset          
         draw_polygon_shape(layer.shapefile.cobject(), index,  
                            self.dc, pen, brush,  
                            self.map.projection, layer.projection,  
                            self.scale, -self.scale, offx, offy)  
69    
70      def projected_points(self, layer, index):      TRANSPARENT_PEN = wxTRANSPARENT_PEN
71          proj = self.map.projection      TRANSPARENT_BRUSH = wxTRANSPARENT_BRUSH
72          if proj is not None:  
73              forward = proj.Forward      def make_point(self, x, y):
74            return wxPoint(int(round(x)), int(round(y)))
75    
76        def tools_for_property(self, prop):
77            fill = prop.GetFill()
78            if fill is Transparent:
79                brush = self.TRANSPARENT_BRUSH
80          else:          else:
81              forward = None              brush = wxBrush(Color2wxColour(fill), wxSOLID)
82          proj = layer.projection  
83          if proj is not None:          stroke = prop.GetLineColor()
84              inverse = proj.Inverse          if stroke is Transparent:
85                pen = self.TRANSPARENT_PEN
86          else:          else:
87              inverse = None              pen = wxPen(Color2wxColour(stroke), prop.GetLineWidth(), wxSOLID)
88          shape = layer.Shape(index)          return pen, brush
         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):  
         p = self.projected_points(layer, index)[0]  
         radius = self.resolution * 5  
         self.dc.DrawEllipse(p.x - radius, p.y - radius, 2*radius, 2*radius)  
89    
90      def draw_label_layer(self, layer):      def low_level_renderer(self, layer):
91          scale = self.scale          """Override inherited method to provide more efficient renderers
         offx, offy = self.offset  
92    
93          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          If the underlying data format is not a shapefile or the layer
94          self.dc.SetFont(font)          contains points shapes, simply use what the inherited method
95            returns.
96    
97            Otherwise, i.e. for arc and polygon use the more efficient
98            wxproj.draw_polygon_shape and its corresponding parameter
99            created with wxproj.draw_polygon_init.
100            """
101            if (layer.ShapeStore().RawShapeFormat() == RAW_SHAPEFILE
102                and layer.ShapeType() in (SHAPETYPE_ARC, SHAPETYPE_POLYGON)):
103                offx, offy = self.offset
104                x = lambda a, b, c, d: None
105                #return (True, x, None)
106                return (True, draw_polygon_shape,
107                        draw_polygon_init(layer.ShapeStore().Shapefile(),
108                                          self.dc, self.map.projection,
109                                          layer.projection,
110                                          self.scale, -self.scale, offx, offy))
111            else:
112                return BaseRenderer.low_level_renderer(self, layer)
113    
114        def label_font(self):
115            return wxFont(int(round(self.resolution * 10)), wxSWISS, wxNORMAL,
116                          wxNORMAL)
117    
118        def projected_raster_layer(self, layer, srcProj, dstProj, extents,
119                                   resolution, dimensions, options):
120            """Returns a raster layer image in projected space
121    
122            Based on a given filename.  This method must be implemented in
123            classes derived from BaseRenderer.
124            """
125    
126            ret = None
127    
128            if Thuban.Model.resource.has_gdal_support():
129    
130                if versions['wxPython-tuple'] < (2,5,3):
131                    options = options | 4  # INVERT_MASK_BITS
132                    options = options & ~2 # ALPHA_MASK not supported
133    
134                try:
135                    ret = ProjectRasterFile(layer.GetImageFilename(),
136                                            srcProj, dstProj,
137                                            extents, resolution, dimensions,
138                                            options)
139                except (MemoryError, IOError, AttributeError, ValueError):
140                    # Why does this catch AttributeError and ValueError?
141                    # FIXME: The exception should be communicated to the user
142                    # better.
143                    traceback.print_exc()
144    
145            return ret
146    
147        def draw_raster_data(self, x,y, data, format = 'BMP', opacity=1.0):
148    
149            mask = None
150            alpha = None
151            width = data[0]
152            height = data[1]
153            image_data, mask_data, alpha_data = data[2]
154    
155            if versions['wxPython-tuple'] < (2,5,3):
156                alpha_data = None
157    
158            if format == 'RAW':
159                image = wxEmptyImage(width, height)
160                image.SetData(image_data)
161                if mask_data is not None:
162                    mask = wxBitmapFromBits(mask_data, width, height, 1)
163                    mask = wxMask(mask)
164                elif alpha_data is not None:
165                    # alpha_data is already in the right format
166                    alpha = alpha_data
167    
         map_proj = self.map.projection  
         if map_proj is not None:  
             forward = map_proj.Forward  
168          else:          else:
169              forward = None              stream = cStringIO.StringIO(image_data)
170                image = wxImageFromStream(stream, raster_format_map[format])
171    
172                if mask_data is not None:
173                    stream = cStringIO.StringIO(mask_data)
174                    mask = wxImageFromStream(stream, raster_format_map[format])
175                    mask = wxMask(wxBitmapFromImage(mask, 1))
176                elif alpha_data is not None:
177                    stream = cStringIO.StringIO(alpha_data)
178                    alpha = wxImageFromStream(stream, raster_format_map[format])
179                    alpha = alpha.GetData() #[:] # XXX: do we need to copy this?
180                elif image.HasAlpha():
181                    alpha = image.GetAlphaData()
182    
183            #
184            # scale down the alpha values the opacity level using a string
185            # translation table for efficiency.
186            #
187            if alpha is not None:
188                if opacity == 0:
189                    return
190                elif opacity == 1:
191                    a = alpha
192                else:
193                    tr = [int(i*opacity) for i in range(256)]
194                    table = array.array('B', tr).tostring()
195                    a = alpha.translate(table)
196    
197          for label in layer.Labels():              image.SetAlphaData(a)
198              x = label.x  
199              y = label.y          bitmap = wxBitmapFromImage(image)
200              text = label.text  
201              if forward:          if mask is not None:
202                  x, y = forward(x, y)              bitmap.SetMask(mask)
203              x = x * scale + offx  
204              y = -y * scale + offy          self.dc.DrawBitmap(bitmap, int(round(x)), int(round(y)), True)
             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)  
205    
206    
207  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
208    
209      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
210      honor_visibility = 1      honor_visibility = 1
211        
212      def RenderMap(self, map, region, selected_layer, selected_shape):      def RenderMap(self, selected_layer, selected_shapes):
213          """Render the map.          """Render the map.
214    
215          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
216          by a wxrect's asTuple method) needs to be redrawn. Highlight the          by a wxrect's asTuple method) needs to be redrawn. Highlight the
217          shape with id selected_shape in the selected_layer.          shapes given by the ids in selected_shapes in the
218            selected_layer.
219          """          """
         self.update_region = region  
220          self.selected_layer = selected_layer          self.selected_layer = selected_layer
221          self.selected_shape = selected_shape          self.selected_shapes = selected_shapes
222          self.render_map(map)          self.render_map()
223    
224        def RenderMapIncrementally(self):
225            """Render the map.
226    
227            Only the given region (a tuple in window coordinates as returned
228            by a wxrect's asTuple method) needs to be redrawn. Highlight the
229            shapes given by the ids in selected_shapes in the
230            selected_layer.
231            """
232            return self.render_map_incrementally()
233    
234        def draw_selection_incrementally(self, layer, selected_shapes):
235            """Draw the selected shapes in a emphasized way (i.e.
236            with a special pen and brush.
237            The drawing is performed incrementally, that means every
238            n shapes, the user can have interactions with the map.
239            n is currently fixed to 500.
240    
241            layer -- the layer where the shapes belong to.
242            selected_shapes -- a list of the shape-ids representing the
243                               selected shapes for the given layer.
244            """
245            pen = wxPen(wxBLACK, 3, wxSOLID)
246            brush = wxBrush(wxBLACK, wxCROSS_HATCH)
247    
248            shapetype = layer.ShapeType()
249            useraw, func, param = self.low_level_renderer(layer)
250            args = (pen, brush)
251    
252      def draw_shape_layer(self, layer):          # for point shapes we need to find out the properties
253          MapRenderer.draw_shape_layer(self, layer)          # to determine the size. Based on table and field,
254          if layer is self.selected_layer and self.selected_shape is not None:          # we can find out the properties for object - see below.
255              pen = wxPen(wxBLACK, 3, wxSOLID)          if shapetype == SHAPETYPE_POINT:
256              brush = wxBrush(wxBLACK, wxCROSS_HATCH)              lc = layer.GetClassification()
257                            field = layer.GetClassificationColumn()
258              shapetype = layer.ShapeType()              table = layer.ShapeStore().Table()
259              index = self.selected_shape  
260              if shapetype == SHAPETYPE_POLYGON:          count = 0
261                  self.draw_polygon_shape(layer, index, pen, brush)          for index in selected_shapes:
262              elif shapetype == SHAPETYPE_ARC:              count += 1
263                  self.draw_polygon_shape(layer, index, pen, None)              shape = layer.Shape(index)
264    
265                # Get the size of the specific property for this
266                # point
267                if shapetype == SHAPETYPE_POINT and field is not None:
268                    value = table.ReadValue(shape.ShapeID(), field)
269                    group = lc.FindGroup(value)
270                    size = group.GetProperties().GetSize()
271                    args = (pen, brush, size)
272    
273                if useraw:
274                    data = shape.RawData()
275              else:              else:
276                  self.dc.SetBrush(brush)                  data = shape.Points()
277                  self.dc.SetPen(pen)              func(param, data, *args)
278                  if shapetype == SHAPETYPE_POINT:              if count % 500 == 0:
279                      self.draw_point_shape(layer, index)                  yield True
                 else:  
                     raise TypeError(_("Unhandled shape type %s") % shapetype)  
280    
281      def layer_ids(self, layer):      def layer_shapes(self, layer):
282          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
283    
284          Call the layer's ShapesInRegion method to determine the ids so          Call the layer's ShapesInRegion method to determine the ids so
# Line 272  class ScreenRenderer(MapRenderer): Line 299  class ScreenRenderer(MapRenderer):
299          offx, offy = self.offset          offx, offy = self.offset
300          xs = []          xs = []
301          ys = []          ys = []
302          x, y, width, height = self.update_region          x, y, width, height = self.region
303          for winx, winy in ((x, y), (x + width, y),          for winx, winy in ((x, y), (x + width, y),
304                             (x + width, y + height), (x, y + height)):                             (x + width, y + height), (x, y + height)):
305              px = (winx - offx) / scale              px = (winx - offx) / scale
# Line 289  class ScreenRenderer(MapRenderer): Line 316  class ScreenRenderer(MapRenderer):
316          return layer.ShapesInRegion((left, bottom, right, top))          return layer.ShapesInRegion((left, bottom, right, top))
317    
318    
319  class PrinterRender(MapRenderer):  class ExportRenderer(ScreenRenderer):
320    
321        honor_visibility = 1
322    
323        def __init__(self, *args, **kw):
324            """Initialize the ExportRenderer.
325    
326      # When printing we want to see all layers          In addition to all parameters of the the ScreenRender
327      honor_visibility = 0          constructor, this class requires and additional keyword argument
328            destination_region with a tuple (minx, miny, maxx, maxy) giving
329            the region in dc coordinates which is to contain the map.
330            """
331            self.destination_region = kw["destination_region"]
332            del kw["destination_region"]
333            ScreenRenderer.__init__(self, *args, **kw)
334    
335        def RenderMap(self, selected_layer, selected_shapes):
336            """Render the map.
337    
338            The rendering device has been specified during initialisation.
339            The device border distance was set in
340            Thuban.UI.viewport.output_transform().
341    
342            RenderMap renders a frame set (one page frame, one around
343            legend/scalebar and one around the map), the map, the legend and
344            the scalebar on the given DC. The map is rendered with the
345            region displayed in the canvas view, centered on the area
346            available for map display.
347            """
348    
349            self.selected_layer = selected_layer
350            self.selected_shapes = selected_shapes
351    
352            # Get some dimensions
353            llx, lly, urx, ury = self.region
354            mminx, mminy, mmaxx, mmaxy = self.destination_region
355    
356            # Manipulate the offset to position the map
357            offx, offy = self.offset
358            # 1. Shift to corner of map drawing area
359            offx = offx + mminx
360            offy = offy + mminy
361    
362            # 2. Center the map on the map drawing area:
363            # region identifies the region on the canvas view:
364            # center of map drawing area - half the size of region: rendering origin
365            self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
366            self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
367    
368            self.offset = (offx+self.shiftx, offy+self.shifty)
369            self.region = (llx + self.shiftx, lly + self.shifty, urx, ury)
370    
371            # Draw the map
372            self.dc.BeginDrawing()
373            self.dc.DestroyClippingRegion()
374            self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
375                                      urx, ury)
376            self.render_map()
377            self.dc.EndDrawing()
378    
379            # Draw the rest (frames, legend, scalebar)
380            self.dc.BeginDrawing()
381            self.dc.DestroyClippingRegion()
382    
383            # Force the font for Legend drawing
384            font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
385            self.dc.SetFont(font)
386    
387            self.render_frame()
388            self.render_legend()
389            self.render_scalebar()
390            self.dc.EndDrawing()
391    
392        def render_frame(self):
393            """Render the frames for map and legend/scalebar."""
394    
395            dc = self.dc
396            dc.SetPen(wxBLACK_PEN)
397            dc.SetBrush(wxTRANSPARENT_BRUSH)
398    
399            # Dimension stuff
400            width, height = dc.GetSizeTuple()
401            mminx, mminy, mmaxx, mmaxy = self.destination_region
402    
403            # Page Frame
404            dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
405    
406            # Map Frame
407            llx, lly, urx, ury = self.region
408            dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
409    
410            # Legend Frame
411            dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
412    
413            dc.DestroyClippingRegion()
414            dc.SetClippingRegion(mmaxx+10,mminy,
415                                 (width-20) - (mmaxx+10), mmaxy-mminy)
416    
417        def render_legend(self):
418            """Render the legend on the Map."""
419    
420            previewer = ClassDataPreviewer()
421            dc = self.dc
422            dc.SetPen(wxBLACK_PEN)
423            dc.SetBrush(wxTRANSPARENT_BRUSH)
424    
425            # Dimension stuff
426            width, height = dc.GetSizeTuple()
427            mminx, mminy, mmaxx, mmaxy = self.destination_region
428            textwidth, textheight = dc.GetTextExtent("0")
429            iconwidth  = textheight
430            iconheight = textheight
431            stepy = textheight+3
432            dx = 10
433            posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
434                                    # 5 pix inside legend frame
435            posy = mminy + 5        # 5 pix inside legend frame
436    
437            # Render the legend
438            dc.SetTextForeground(wxBLACK)
439            if self.map.HasLayers():
440                layers = self.map.Layers()[:]
441                layers.reverse()
442                for l in layers:
443                    if l.Visible():
444                        # Render title
445                        dc.DrawText(l.Title(), posx, posy)
446                        posy+=stepy
447                        if l.HasClassification():
448                            # Render classification
449                            clazz = l.GetClassification()
450                            shapeType = l.ShapeType()
451                            for g in clazz:
452                                if g.IsVisible():
453                                    previewer.Draw(dc,
454                                        wxRect(posx+dx, posy,
455                                               iconwidth, iconheight),
456                                        g.GetProperties(), shapeType)
457                                    dc.DrawText(g.GetDisplayText(),
458                                                posx+2*dx+iconwidth, posy)
459                                    posy+=stepy
460    
461        def render_scalebar(self):
462            """Render the scalebar."""
463    
464            scalebar = ScaleBar(self.map)
465    
466            # Dimension stuff
467            width, height = self.dc.GetSizeTuple()
468            mminx, mminy, mmaxx, mmaxy = self.destination_region
469    
470            # Render the scalebar
471            scalebar.DrawScaleBar(self.scale, self.dc,
472                                 (mmaxx+10+5, mmaxy-25),
473                                 ((width-15-5) - (mmaxx+10+5),20)
474                                )
475            # 10 pix between map and legend frame, 5 pix inside legend frame
476            # 25 pix from the legend frame bottom line
477            # Width: 15 pix from DC border, 5 pix inside frame, 10, 5 as above
478            # Height: 20
479    
480    class PrinterRenderer(ExportRenderer):
481    
482        # Printing as well as Export / Screen display only the visible layer.
483        honor_visibility = 1
484    
     RenderMap = MapRenderer.render_map  
       
Legend:
Removed from v.394  
changed lines
  Added in v.2618
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