/[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 394 by jonathan, Mon Feb 10 15:27:13 2003 UTC revision 2602 by joey, Mon Apr 25 15:01:48 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, layer, x,y, data, format = 'BMP'):
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                if mask_data is not None:
172                    stream = cStringIO.StringIO(mask_data)
173                    mask = wxImageFromStream(stream, raster_format_map[format])
174                    mask = wxMask(wxBitmapFromImage(mask, 1))
175                elif alpha_data is not None:
176                    stream = cStringIO.StringIO(alpha_data)
177                    alpha = wxImageFromStream(stream, raster_format_map[format])
178                    alpha = alpha.GetData()[:] # XXX: do we need to copy this?
179    
180            #
181            # if we are using the alpha_data then scale down the alpha values
182            # by the layer's opacity using a string translation table
183            #
184            if alpha is not None:
185                lo = layer.Opacity()
186                if lo == 0:
187                    return
188                elif lo == 1:
189                    a = alpha
190                else:
191                    tr = [int(i*lo) for i in range(256)]
192                    table = array.array('B', tr).tostring()
193                    a = alpha.translate(table)
194    
195          for label in layer.Labels():              image.SetAlphaData(a)
196              x = label.x  
197              y = label.y          bitmap = wxBitmapFromImage(image)
198              text = label.text  
199              if forward:          if mask is not None:
200                  x, y = forward(x, y)              bitmap.SetMask(mask)
201              x = x * scale + offx  
202              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)  
203    
204    
205  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
206    
207      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
208      honor_visibility = 1      honor_visibility = 1
209        
210      def RenderMap(self, map, region, selected_layer, selected_shape):      def RenderMap(self, selected_layer, selected_shapes):
211          """Render the map.          """Render the map.
212    
213          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
214          by a wxrect's asTuple method) needs to be redrawn. Highlight the          by a wxrect's asTuple method) needs to be redrawn. Highlight the
215          shape with id selected_shape in the selected_layer.          shapes given by the ids in selected_shapes in the
216            selected_layer.
217          """          """
         self.update_region = region  
218          self.selected_layer = selected_layer          self.selected_layer = selected_layer
219          self.selected_shape = selected_shape          self.selected_shapes = selected_shapes
220          self.render_map(map)          self.render_map()
221    
222        def RenderMapIncrementally(self):
223            """Render the map.
224    
225            Only the given region (a tuple in window coordinates as returned
226            by a wxrect's asTuple method) needs to be redrawn. Highlight the
227            shapes given by the ids in selected_shapes in the
228            selected_layer.
229            """
230            return self.render_map_incrementally()
231    
232        def draw_selection_incrementally(self, layer, selected_shapes):
233            """Draw the selected shapes in a emphasized way (i.e.
234            with a special pen and brush.
235            The drawing is performed incrementally, that means every
236            n shapes, the user can have interactions with the map.
237            n is currently fixed to 500.
238    
239            layer -- the layer where the shapes belong to.
240            selected_shapes -- a list of the shape-ids representing the
241                               selected shapes for the given layer.
242            """
243            pen = wxPen(wxBLACK, 3, wxSOLID)
244            brush = wxBrush(wxBLACK, wxCROSS_HATCH)
245    
246            shapetype = layer.ShapeType()
247            useraw, func, param = self.low_level_renderer(layer)
248            args = (pen, brush)
249    
250      def draw_shape_layer(self, layer):          # for point shapes we need to find out the properties
251          MapRenderer.draw_shape_layer(self, layer)          # to determine the size. Based on table and field,
252          if layer is self.selected_layer and self.selected_shape is not None:          # we can find out the properties for object - see below.
253              pen = wxPen(wxBLACK, 3, wxSOLID)          if shapetype == SHAPETYPE_POINT:
254              brush = wxBrush(wxBLACK, wxCROSS_HATCH)              lc = layer.GetClassification()
255                            field = layer.GetClassificationColumn()
256              shapetype = layer.ShapeType()              table = layer.ShapeStore().Table()
257              index = self.selected_shape  
258              if shapetype == SHAPETYPE_POLYGON:          count = 0
259                  self.draw_polygon_shape(layer, index, pen, brush)          for index in selected_shapes:
260              elif shapetype == SHAPETYPE_ARC:              count += 1
261                  self.draw_polygon_shape(layer, index, pen, None)              shape = layer.Shape(index)
262    
263                # Get the size of the specific property for this
264                # point
265                if shapetype == SHAPETYPE_POINT and field is not None:
266                    value = table.ReadValue(shape.ShapeID(), field)
267                    group = lc.FindGroup(value)
268                    size = group.GetProperties().GetSize()
269                    args = (pen, brush, size)
270    
271                if useraw:
272                    data = shape.RawData()
273              else:              else:
274                  self.dc.SetBrush(brush)                  data = shape.Points()
275                  self.dc.SetPen(pen)              func(param, data, *args)
276                  if shapetype == SHAPETYPE_POINT:              if count % 500 == 0:
277                      self.draw_point_shape(layer, index)                  yield True
                 else:  
                     raise TypeError(_("Unhandled shape type %s") % shapetype)  
278    
279      def layer_ids(self, layer):      def layer_shapes(self, layer):
280          """Return the shapeids covered by the region that has to be redrawn          """Return the shapeids covered by the region that has to be redrawn
281    
282          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 297  class ScreenRenderer(MapRenderer):
297          offx, offy = self.offset          offx, offy = self.offset
298          xs = []          xs = []
299          ys = []          ys = []
300          x, y, width, height = self.update_region          x, y, width, height = self.region
301          for winx, winy in ((x, y), (x + width, y),          for winx, winy in ((x, y), (x + width, y),
302                             (x + width, y + height), (x, y + height)):                             (x + width, y + height), (x, y + height)):
303              px = (winx - offx) / scale              px = (winx - offx) / scale
# Line 289  class ScreenRenderer(MapRenderer): Line 314  class ScreenRenderer(MapRenderer):
314          return layer.ShapesInRegion((left, bottom, right, top))          return layer.ShapesInRegion((left, bottom, right, top))
315    
316    
317  class PrinterRender(MapRenderer):  class ExportRenderer(ScreenRenderer):
318    
319        honor_visibility = 1
320    
321        def __init__(self, *args, **kw):
322            """Initialize the ExportRenderer.
323    
324      # When printing we want to see all layers          In addition to all parameters of the the ScreenRender
325      honor_visibility = 0          constructor, this class requires and additional keyword argument
326            destination_region with a tuple (minx, miny, maxx, maxy) giving
327            the region in dc coordinates which is to contain the map.
328            """
329            self.destination_region = kw["destination_region"]
330            del kw["destination_region"]
331            ScreenRenderer.__init__(self, *args, **kw)
332    
333        def RenderMap(self, selected_layer, selected_shapes):
334            """Render the map.
335    
336            The rendering device has been specified during initialisation.
337            The device border distance was set in
338            Thuban.UI.viewport.output_transform().
339    
340            RenderMap renders a frame set (one page frame, one around
341            legend/scalebar and one around the map), the map, the legend and
342            the scalebar on the given DC. The map is rendered with the
343            region displayed in the canvas view, centered on the area
344            available for map display.
345            """
346    
347            self.selected_layer = selected_layer
348            self.selected_shapes = selected_shapes
349    
350            # Get some dimensions
351            llx, lly, urx, ury = self.region
352            mminx, mminy, mmaxx, mmaxy = self.destination_region
353    
354            # Manipulate the offset to position the map
355            offx, offy = self.offset
356            # 1. Shift to corner of map drawing area
357            offx = offx + mminx
358            offy = offy + mminy
359    
360            # 2. Center the map on the map drawing area:
361            # region identifies the region on the canvas view:
362            # center of map drawing area - half the size of region: rendering origin
363            self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
364            self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
365    
366            self.offset = (offx+self.shiftx, offy+self.shifty)
367            self.region = (llx + self.shiftx, lly + self.shifty, urx, ury)
368    
369            # Draw the map
370            self.dc.BeginDrawing()
371            self.dc.DestroyClippingRegion()
372            self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
373                                      urx, ury)
374            self.render_map()
375            self.dc.EndDrawing()
376    
377            # Draw the rest (frames, legend, scalebar)
378            self.dc.BeginDrawing()
379            self.dc.DestroyClippingRegion()
380    
381            # Force the font for Legend drawing
382            font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)
383            self.dc.SetFont(font)
384    
385            self.render_frame()
386            self.render_legend()
387            self.render_scalebar()
388            self.dc.EndDrawing()
389    
390        def render_frame(self):
391            """Render the frames for map and legend/scalebar."""
392    
393            dc = self.dc
394            dc.SetPen(wxBLACK_PEN)
395            dc.SetBrush(wxTRANSPARENT_BRUSH)
396    
397            # Dimension stuff
398            width, height = dc.GetSizeTuple()
399            mminx, mminy, mmaxx, mmaxy = self.destination_region
400    
401            # Page Frame
402            dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
403    
404            # Map Frame
405            llx, lly, urx, ury = self.region
406            dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
407    
408            # Legend Frame
409            dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
410    
411            dc.DestroyClippingRegion()
412            dc.SetClippingRegion(mmaxx+10,mminy,
413                                 (width-20) - (mmaxx+10), mmaxy-mminy)
414    
415        def render_legend(self):
416            """Render the legend on the Map."""
417    
418            previewer = ClassDataPreviewer()
419            dc = self.dc
420            dc.SetPen(wxBLACK_PEN)
421            dc.SetBrush(wxTRANSPARENT_BRUSH)
422    
423            # Dimension stuff
424            width, height = dc.GetSizeTuple()
425            mminx, mminy, mmaxx, mmaxy = self.destination_region
426            textwidth, textheight = dc.GetTextExtent("0")
427            iconwidth  = textheight
428            iconheight = textheight
429            stepy = textheight+3
430            dx = 10
431            posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
432                                    # 5 pix inside legend frame
433            posy = mminy + 5        # 5 pix inside legend frame
434    
435            # Render the legend
436            dc.SetTextForeground(wxBLACK)
437            if self.map.HasLayers():
438                layers = self.map.Layers()[:]
439                layers.reverse()
440                for l in layers:
441                    if l.Visible():
442                        # Render title
443                        dc.DrawText(l.Title(), posx, posy)
444                        posy+=stepy
445                        if l.HasClassification():
446                            # Render classification
447                            clazz = l.GetClassification()
448                            shapeType = l.ShapeType()
449                            for g in clazz:
450                                if g.IsVisible():
451                                    previewer.Draw(dc,
452                                        wxRect(posx+dx, posy,
453                                               iconwidth, iconheight),
454                                        g.GetProperties(), shapeType)
455                                    dc.DrawText(g.GetDisplayText(),
456                                                posx+2*dx+iconwidth, posy)
457                                    posy+=stepy
458    
459        def render_scalebar(self):
460            """Render the scalebar."""
461    
462            scalebar = ScaleBar(self.map)
463    
464            # Dimension stuff
465            width, height = self.dc.GetSizeTuple()
466            mminx, mminy, mmaxx, mmaxy = self.destination_region
467    
468            # Render the scalebar
469            scalebar.DrawScaleBar(self.scale, self.dc,
470                                 (mmaxx+10+5, mmaxy-25),
471                                 ((width-15-5) - (mmaxx+10+5),20)
472                                )
473            # 10 pix between map and legend frame, 5 pix inside legend frame
474            # 25 pix from the legend frame bottom line
475            # Width: 15 pix from DC border, 5 pix inside frame, 10, 5 as above
476            # Height: 20
477    
478    class PrinterRenderer(ExportRenderer):
479    
480        # Printing as well as Export / Screen display only the visible layer.
481        honor_visibility = 1
482    
     RenderMap = MapRenderer.render_map  
       
Legend:
Removed from v.394  
changed lines
  Added in v.2602
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26