/[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 1419 by bh, Tue Jul 15 09:29:18 2003 UTC revision 2700 by dpinte, Mon Sep 18 14:27:02 2006 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH  # Copyright (c) 2001-2005 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]> (2003-2005)
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    import array
20    
21    import traceback
22    
23  from Thuban import _  from Thuban import _
24    
25  from wxPython.wx import wxMemoryDC, wxEmptyBitmap, \  import wx
     wxPoint, wxRect, wxPen, wxBrush, wxFont, \  
     wxTRANSPARENT_PEN, wxTRANSPARENT_BRUSH, \  
     wxBLACK_PEN, wxRED_PEN, wxBLACK, \  
     wxSOLID, wxCROSS_HATCH, wxSWISS, wxNORMAL, \  
     wxBitmap, wxImageFromBitmap, wxBitmapFromImage, \  
     wxImageFromStream, wxBITMAP_TYPE_BMP  
26    
27  from wxproj import draw_polygon_shape, draw_polygon_init  from wxproj import draw_polygon_shape, draw_polygon_init
28    
# Line 27  from Thuban.UI.common import Color2wxCol Line 30  from Thuban.UI.common import Color2wxCol
30  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
31  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
32    
33  from Thuban.Model.layer import Layer, RasterLayer, \  from Thuban.Model.data import SHAPETYPE_POLYGON, SHAPETYPE_ARC, \
34       SHAPETYPE_POLYGON, SHAPETYPE_ARC, SHAPETYPE_POINT       SHAPETYPE_POINT, RAW_SHAPEFILE
 from Thuban.Model.label import ALIGN_CENTER, ALIGN_TOP, ALIGN_BOTTOM, \  
      ALIGN_LEFT, ALIGN_RIGHT, ALIGN_BASELINE  
35    
 from Thuban.Model.classification import Classification  
36  from Thuban.Model.color import Transparent  from Thuban.Model.color import Transparent
37  import Thuban.Model.resource  import Thuban.Model.resource
38    
39  if Thuban.Model.resource.has_gdal_support():  from baserenderer import BaseRenderer
     from gdalwarp import ProjectRasterFile  
   
 class MapRenderer:  
   
     """Class to render a map onto a wxDC"""  
   
     honor_visibility = 1  
   
     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  
40    
41          self.dc = dc  from math import floor
         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  
42    
43          if self.scale == 0:  from types import StringType
             return  
44    
45          #  from Thuban.version import versions
         # 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.  
         #  
         if Thuban.Model.resource.has_gdal_support():  
             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())  if Thuban.Model.resource.has_gdal_support():
48        from gdalwarp import ProjectRasterFile
49    
     def draw_shape_layer(self, layer):  
         scale = self.scale  
         offx, offy = self.offset  
50    
51          map_proj = self.map.projection  # Map the strings used for the format parameter of the draw_raster_data
52          layer_proj = layer.projection  # method to the appropriate wxWindows constants
53    raster_format_map = {
54        "BMP": wx.BITMAP_TYPE_BMP,
55        "JPEG": wx.BITMAP_TYPE_JPEG,
56        "PNG": wx.BITMAP_TYPE_PNG,
57        "TIFF": wx.BITMAP_TYPE_TIF,
58        "GIF": wx.BITMAP_TYPE_GIF,
59        }
60    
61          shapetype = layer.ShapeType()  class MapRenderer(BaseRenderer):
62    
63          brush = wxTRANSPARENT_BRUSH      """Class to render a map onto a wxDC"""
         pen   = wxTRANSPARENT_PEN  
64    
65          old_prop = None      TRANSPARENT_PEN = wx.TRANSPARENT_PEN
66          old_group = None      TRANSPARENT_BRUSH = wx.TRANSPARENT_BRUSH
         lc = layer.GetClassification()  
         field = lc.GetField()  
         defaultGroup = lc.GetDefaultGroup()  
67    
68        def make_point(self, x, y):
69            return wx.Point(int(round(x)), int(round(y)))
70    
71          if shapetype == SHAPETYPE_POINT:      def tools_for_property(self, prop):
72              draw_func = self.draw_point_shape          fill = prop.GetFill()
73              draw_func_param = layer          if fill is Transparent:
74                brush = self.TRANSPARENT_BRUSH
75          else:          else:
76              draw_func = draw_polygon_shape              brush = wx.Brush(Color2wxColour(fill), wx.SOLID)
             draw_func_param = self.polygon_render_param(layer)  
77    
78          table = layer.ShapeStore().Table()          stroke = prop.GetLineColor()
79          for i in self.layer_ids(layer):          if stroke is Transparent:
80                pen = self.TRANSPARENT_PEN
81              if field is None:          else:
82                  group = defaultGroup              pen = wx.Pen(Color2wxColour(stroke), prop.GetLineWidth(), wx.SOLID)
83              else:          return pen, brush
                 record = 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  
   
                     if shapetype == SHAPETYPE_ARC:  
                         fill = Transparent  
                     else:  
                         fill = prop.GetFill()  
84    
85        def low_level_renderer(self, layer):
86            """Override inherited method to provide more efficient renderers
87    
88                      if fill is Transparent:          If the underlying data format is not a shapefile or the layer
89                          brush = wxTRANSPARENT_BRUSH          contains points shapes, simply use what the inherited method
90                      else:          returns.
91                          color = Color2wxColour(fill)  
92                          brush = wxBrush(color, wxSOLID)          Otherwise, i.e. for arc and polygon use the more efficient
93            wxproj.draw_polygon_shape and its corresponding parameter
94            created with wxproj.draw_polygon_init.
95            """
96            if (layer.ShapeStore().RawShapeFormat() == RAW_SHAPEFILE
97                and layer.ShapeType() in (SHAPETYPE_ARC, SHAPETYPE_POLYGON)):
98                offx, offy = self.offset
99                x = lambda a, b, c, d: None
100                #return (True, x, None)
101                return (True, draw_polygon_shape,
102                        draw_polygon_init(layer.ShapeStore().Shapefile(),
103                                          self.dc, self.map.projection,
104                                          layer.projection,
105                                          self.scale, -self.scale, offx, offy))
106            else:
107                return BaseRenderer.low_level_renderer(self, layer)
108    
109                      stroke = prop.GetLineColor()      def label_font(self):
110                      stroke_width = prop.GetLineWidth()          return wx.Font(int(round(self.resolution * 10)), wx.SWISS, wx.NORMAL,
111                      if stroke is Transparent:                        wx.NORMAL)
112                          pen = wxTRANSPARENT_PEN  
113                      else:      def projected_raster_layer(self, layer, srcProj, dstProj, extents,
114                          color = Color2wxColour(stroke)                                 resolution, dimensions, options):
115                          pen = wxPen(color, stroke_width, wxSOLID)          """Returns a raster layer image in projected space
116    
117              draw_func(draw_func_param, i, pen, brush)          Based on a given filename.  This method must be implemented in
118            classes derived from BaseRenderer.
119            """
120    
121      def draw_raster_layer(self, layer):          ret = None
         data = None  
         offx, offy = self.offset  
         width, height = self.dc.GetSizeTuple()  
122    
123          inProj = ""          if Thuban.Model.resource.has_gdal_support():
         proj = layer.GetProjection()  
         if proj is not None:  
             for p in proj.GetAllParameters():  
                 inProj += "+" + p + " "  
124    
125          outProj = ""              if versions['wxPython-tuple'] < (2,5,3):
126          proj = self.map.GetProjection()                  options = options | 4  # INVERT_MASK_BITS
127          if proj is not None:                  options = options & ~2 # ALPHA_MASK not supported
128              for p in proj.GetAllParameters():  
129                  outProj += "+" + p + " "              try:
130                    ret = ProjectRasterFile(layer.GetImageFilename(),
131                                            srcProj, dstProj,
132                                            extents, resolution, dimensions,
133                                            options)
134                except (MemoryError, IOError, AttributeError, ValueError):
135                    # Why does this catch AttributeError and ValueError?
136                    # FIXME: The exception should be communicated to the user
137                    # better.
138                    traceback.print_exc()
139    
140            return ret
141    
142        def draw_raster_data(self, x,y, data, format = 'BMP', opacity=1.0):
143    
144            mask = None
145            alpha = None
146            width = data[0]
147            height = data[1]
148            image_data, mask_data, alpha_data = data[2]
149    
150            if versions['wxPython-tuple'] < (2,5,3):
151                alpha_data = None
152    
153            if format == 'RAW':
154                image = wx.EmptyImage(width, height)
155                image.SetData(image_data)
156                if mask_data is not None:
157                    mask = wx.BitmapFromBits(mask_data, width, height, 1)
158                    mask = wx.Mask(mask)
159                elif alpha_data is not None:
160                    # alpha_data is already in the right format
161                    alpha = alpha_data
162    
         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  
163          else:          else:
164              if data is not None:              stream = cStringIO.StringIO(image_data)
165                  stream = cStringIO.StringIO(data)              image = wx.ImageFromStream(stream, raster_format_map[format])
                 image = wxImageFromStream(stream, wxBITMAP_TYPE_BMP)  
                 bitmap = wxBitmapFromImage(image)  
                 self.dc.BeginDrawing()  
                 self.dc.DrawBitmap(bitmap, 0, 0)  
                 self.dc.EndDrawing()  
   
     def layer_ids(self, layer):  
         """Return the shape ids of the given layer that have to be drawn.  
166    
167          The default implementation simply returns all ids in the layer.              if mask_data is not None:
168          Override in derived classes to be more precise.                  stream = cStringIO.StringIO(mask_data)
169          """                  mask = wx.ImageFromStream(stream, raster_format_map[format])
170          return range(layer.NumShapes())                  mask = wx.Mask(wx.BitmapFromImage(mask, 1))
171                elif alpha_data is not None:
172      def polygon_render_param(self, layer):                  stream = cStringIO.StringIO(alpha_data)
173          """Return the low-lever render parameter for the layer"""                  alpha = wx.ImageFromStream(stream, raster_format_map[format])
174          offx, offy = self.offset                  alpha = alpha.GetData() #[:] # XXX: do we need to copy this?
175          return draw_polygon_init(layer.ShapeStore().Shapefile(), self.dc,              elif image.HasAlpha():
176                                   self.map.projection,                  alpha = image.GetAlphaData()
                                  layer.projection,  
                                  self.scale, -self.scale,  
                                  offx, offy)  
177    
178      def draw_polygon_shape(self, draw_polygon_info, index, pen, brush):          #
179          draw_polygon_shape(draw_polygon_info, index, pen, brush)          # scale down the alpha values the opacity level using a string
180            # translation table for efficiency.
181      def projected_points(self, layer, index):          #
182          proj = self.map.GetProjection()          if alpha is not None:
183          if proj is not None:              if opacity == 0:
184              forward = proj.Forward                  return
185          else:              elif opacity == 1:
186              forward = None                  a = alpha
187          proj = layer.GetProjection()              else:
188          if proj is not None:                  tr = [int(i*opacity) for i in range(256)]
189              inverse = proj.Inverse                  table = array.array('B', tr).tostring()
190          else:                  a = alpha.translate(table)
             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, pen, brush):  
         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.SetBrush(brush)  
         self.dc.SetPen(pen)  
         self.dc.DrawEllipse(p.x - radius, p.y - radius, 2*radius, 2*radius)  
191    
192      def draw_label_layer(self, layer):              image.SetAlphaData(a)
         scale = self.scale  
         offx, offy = self.offset  
193    
194          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          bitmap = wx.BitmapFromImage(image)
         self.dc.SetFont(font)  
195    
196          map_proj = self.map.projection          if mask is not None:
197          if map_proj is not None:              bitmap.SetMask(mask)
             forward = map_proj.Forward  
         else:  
             forward = None  
198    
199          for label in layer.Labels():          self.dc.DrawBitmap(bitmap, int(round(x)), int(round(y)), True)
             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)  
200    
201    
202  class ScreenRenderer(MapRenderer):  class ScreenRenderer(MapRenderer):
203    
204      # On the screen we want to see only visible layers by default      # On the screen we want to see only visible layers by default
205      honor_visibility = 1      honor_visibility = 1
206        
207      def RenderMap(self, map, region, selected_layer, selected_shapes):      def RenderMap(self, selected_layer, selected_shapes):
208          """Render the map.          """Render the map.
209    
210          Only the given region (a tuple in window coordinates as returned          Only the given region (a tuple in window coordinates as returned
# Line 329  class ScreenRenderer(MapRenderer): Line 212  class ScreenRenderer(MapRenderer):
212          shapes given by the ids in selected_shapes in the          shapes given by the ids in selected_shapes in the
213          selected_layer.          selected_layer.
214          """          """
         self.update_region = region  
215          self.selected_layer = selected_layer          self.selected_layer = selected_layer
216          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
217          self.render_map(map)          self.render_map()
218    
219      def draw_shape_layer(self, layer):      def RenderMapIncrementally(self):
220          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)  
221    
222              for index in self.selected_shapes:          Only the given region (a tuple in window coordinates as returned
223                  func(renderparam, index, *args)          by a wxrect's asTuple method) needs to be redrawn. Highlight the
224            shapes given by the ids in selected_shapes in the
225            selected_layer.
226            """
227            return self.render_map_incrementally()
228    
229        def draw_selection_incrementally(self, layer, selected_shapes):
230            """Draw the selected shapes in a emphasized way (i.e.
231            with a special pen and brush.
232            The drawing is performed incrementally, that means every
233            n shapes, the user can have interactions with the map.
234            n is currently fixed to 500.
235    
236            layer -- the layer where the shapes belong to.
237            selected_shapes -- a list of the shape-ids representing the
238                               selected shapes for the given layer.
239            """
240            pen = wx.Pen(wx.BLACK, 3, wx.SOLID)
241            brush = wx.Brush(wx.BLACK, wx.CROSS_HATCH)
242    
243            shapetype = layer.ShapeType()
244            useraw, func, param = self.low_level_renderer(layer)
245            args = (pen, brush)
246    
247      def layer_ids(self, layer):          # for point shapes we need to find out the properties
248            # to determine the size. Based on table and field,
249            # we can find out the properties for object - see below.
250            if shapetype == SHAPETYPE_POINT:
251                lc = layer.GetClassification()
252                field = layer.GetClassificationColumn()
253                table = layer.ShapeStore().Table()
254    
255            count = 0
256            for index in selected_shapes:
257                count += 1
258                shape = layer.Shape(index)
259    
260                # Get the size of the specific property for this
261                # point
262                if shapetype == SHAPETYPE_POINT:
263                    if field is not None:
264                        value = table.ReadValue(shape.ShapeID(), field)
265                        group = lc.FindGroup(value)
266                        size = group.GetProperties().GetSize()
267                    else:
268                        size = lc.GetDefaultGroup().GetProperties().GetSize()
269                    args = (pen, brush, size)
270    
271                if useraw:
272                    data = shape.RawData()
273                else:
274                    data = shape.Points()
275                func(param, data, *args)
276                if count % 500 == 0:
277                    yield True
278    
279        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 384  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 404  class ScreenRenderer(MapRenderer): Line 317  class ScreenRenderer(MapRenderer):
317  class ExportRenderer(ScreenRenderer):  class ExportRenderer(ScreenRenderer):
318    
319      honor_visibility = 1      honor_visibility = 1
320        
321      def RenderMap(self, map, region, mapregion,      def __init__(self, *args, **kw):
322                    selected_layer, selected_shapes ):          """Initialize the ExportRenderer.
323    
324            In addition to all parameters of the the ScreenRender
325            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.          """Render the map.
335    
336          The rendering device has been specified during initialisation.          The rendering device has been specified during initialisation.
337          The device border distance was set in Thuban.UI.view.OutputTranform().          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          RenderMap renders a frame set (one page frame, one around
341          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
342          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
343          in the canvas view, centered on the area available for map display.          region displayed in the canvas view, centered on the area
344            available for map display.
345          """          """
346            
         self.update_region = region  
347          self.selected_layer = selected_layer          self.selected_layer = selected_layer
348          self.selected_shapes = selected_shapes          self.selected_shapes = selected_shapes
349    
350          # Get some dimensions          # Get some dimensions
351          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
352          self.mapregion = mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
         mminx, mminy, mmaxx, mmaxy = self.mapregion  
353    
354          # Manipulate the offset to position the map          # Manipulate the offset to position the map
355          offx, offy = self.offset          offx, offy = self.offset
356          # 1. Shift to corner of map drawing area          # 1. Shift to corner of map drawing area
357          offx = offx + mminx          offx = offx + mminx
358          offy = offy + mminy          offy = offy + mminy
359    
360          # 2. Center the map on the map drawing area:          # 2. Center the map on the map drawing area:
361          # region identifies the region on the canvas view:          # region identifies the region on the canvas view:
362          # center of map drawing area - half the size of region: rendering origin          # center of map drawing area - half the size of region: rendering origin
363          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5          self.shiftx = (mmaxx - mminx)*0.5 - (urx - llx)*0.5
364          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5          self.shifty = (mmaxy - mminy)*0.5 - (ury - lly)*0.5
365    
366          self.offset = (offx+self.shiftx, offy+self.shifty)          self.offset = (offx+self.shiftx, offy+self.shifty)
367            self.region = (llx + self.shiftx, lly + self.shifty, urx, ury)
368    
369          # Draw the map          # Draw the map
370          self.dc.BeginDrawing()          self.dc.BeginDrawing()
371          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
372          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,          self.dc.SetClippingRegion(mminx+self.shiftx, mminy+self.shifty,
373                                    urx, ury)                                    urx, ury)
374          self.render_map(map)          self.render_map()
375          self.dc.EndDrawing()          self.dc.EndDrawing()
376    
377          # Draw the rest (frames, legend, scalebar)          # Draw the rest (frames, legend, scalebar)
# Line 454  class ExportRenderer(ScreenRenderer): Line 379  class ExportRenderer(ScreenRenderer):
379          self.dc.DestroyClippingRegion()          self.dc.DestroyClippingRegion()
380    
381          # Force the font for Legend drawing          # Force the font for Legend drawing
382          font = wxFont(self.resolution * 10, wxSWISS, wxNORMAL, wxNORMAL)          font = wx.Font(self.resolution * 10, wx.SWISS, wx.NORMAL, wx.NORMAL)
383          self.dc.SetFont(font)          self.dc.SetFont(font)
384    
385          self.render_frame(region)          self.render_frame()
386          self.render_legend(map)          self.render_legend()
387          self.render_scalebar(map)          self.render_scalebar()
388          self.dc.EndDrawing()          self.dc.EndDrawing()
389    
390      def render_frame(self, region):      def render_frame(self):
391          """Render the frames for map and legend/scalebar."""          """Render the frames for map and legend/scalebar."""
392    
393          dc = self.dc          dc = self.dc
394          dc.SetPen(wxBLACK_PEN)          dc.SetPen(wx.BLACK_PEN)
395          dc.SetBrush(wxTRANSPARENT_BRUSH)          dc.SetBrush(wx.TRANSPARENT_BRUSH)
396    
397          # Dimension stuff          # Dimension stuff
398          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
399          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
400    
401          # Page Frame          # Page Frame
402          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)          dc.DrawRectangle(15,15,width-30, (mmaxy-mminy)+10)
403            
404          # Map Frame          # Map Frame
405          llx, lly, urx, ury = region          llx, lly, urx, ury = self.region
406          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)          dc.DrawRectangle(mminx + self.shiftx, mminy + self.shifty, urx, ury)
407            
408          # Legend Frame          # Legend Frame
409          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)          dc.DrawRectangle(mmaxx+10,mminy,(width-20) - (mmaxx+10), mmaxy-mminy)
410    
# Line 487  class ExportRenderer(ScreenRenderer): Line 412  class ExportRenderer(ScreenRenderer):
412          dc.SetClippingRegion(mmaxx+10,mminy,          dc.SetClippingRegion(mmaxx+10,mminy,
413                               (width-20) - (mmaxx+10), mmaxy-mminy)                               (width-20) - (mmaxx+10), mmaxy-mminy)
414    
415      def render_legend(self, map):      def render_legend(self):
416          """Render the legend on the Map."""          """Render the legend on the Map."""
417    
418          previewer = ClassDataPreviewer()          previewer = ClassDataPreviewer()
419          dc = self.dc          dc = self.dc
420          dc.SetPen(wxBLACK_PEN)          dc.SetPen(wx.BLACK_PEN)
421          dc.SetBrush(wxTRANSPARENT_BRUSH)          dc.SetBrush(wx.TRANSPARENT_BRUSH)
422    
423          # Dimension stuff          # Dimension stuff
424          width, height = dc.GetSizeTuple()          width, height = dc.GetSizeTuple()
425          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
426          textwidth, textheight = dc.GetTextExtent("0")          textwidth, textheight = dc.GetTextExtent("0")
427          iconwidth  = textheight          iconwidth  = textheight
428          iconheight = textheight          iconheight = textheight
429          stepy = textheight+3          stepy = textheight+3
430          dx = 10          dx = 10
431          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,          posx = mmaxx + 10 + 5   # 10 pix distance mapframe/legend frame,
432                                  # 5 pix inside legend frame                                  # 5 pix inside legend frame
433          posy = mminy + 5        # 5 pix inside legend frame          posy = mminy + 5        # 5 pix inside legend frame
434            
435          # Render the legend          # Render the legend
436          dc.SetTextForeground(wxBLACK)          dc.SetTextForeground(wx.BLACK)
437          if map.HasLayers():          if self.map.HasLayers():
438              layers = map.Layers()              layers = self.map.Layers()[:]
439              layers.reverse()              layers.reverse()
440              for l in layers:              for l in layers:
441                  if l.Visible():                  if l.Visible():
# Line 523  class ExportRenderer(ScreenRenderer): Line 448  class ExportRenderer(ScreenRenderer):
448                          shapeType = l.ShapeType()                          shapeType = l.ShapeType()
449                          for g in clazz:                          for g in clazz:
450                              if g.IsVisible():                              if g.IsVisible():
451                                  previewer.Draw(dc,                                  previewer.Draw(dc,
452                                      wxRect(posx+dx, posy,                                      wx.Rect(posx+dx, posy,
453                                             iconwidth, iconheight),                                             iconwidth, iconheight),
454                                      g.GetProperties(), shapeType)                                      g.GetProperties(), shapeType)
455                                  dc.DrawText(g.GetDisplayText(),                                  dc.DrawText(g.GetDisplayText(),
456                                              posx+2*dx+iconwidth, posy)                                              posx+2*dx+iconwidth, posy)
457                                  posy+=stepy                                  posy+=stepy
458            
459      def render_scalebar(self, map):      def render_scalebar(self):
460          """Render the scalebar."""          """Render the scalebar."""
461    
462          scalebar = ScaleBar(map)          scalebar = ScaleBar(self.map)
463    
464          # Dimension stuff          # Dimension stuff
465          width, height = self.dc.GetSizeTuple()          width, height = self.dc.GetSizeTuple()
466          mminx, mminy, mmaxx, mmaxy = self.mapregion          mminx, mminy, mmaxx, mmaxy = self.destination_region
467          
468          # Render the scalebar          # Render the scalebar
469          scalebar.DrawScaleBar(self.scale, self.dc,          scalebar.DrawScaleBar(self.scale, self.dc,
470                               (mmaxx+10+5, mmaxy-25),                               (mmaxx+10+5, mmaxy-25),
471                               ((width-15-5) - (mmaxx+10+5),20)                               ((width-15-5) - (mmaxx+10+5),20)
472                              )                              )
Legend:
Removed from v.1419  
changed lines
  Added in v.2700
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26