/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/view.py
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revision 1385 by jonathan, Thu Jul 10 14:52:39 2003 UTC revision 1460 by bh, Fri Jul 18 15:23:48 2003 UTC
# Line 14  __version__ = "$Revision$" Line 14  __version__ = "$Revision$"
14    
15  from Thuban import _  from Thuban import _
16    
 import sys  
17  import os.path  import os.path
18    
 from math import hypot  
   
19  from wxPython.wx import wxWindow, \  from wxPython.wx import wxWindow, \
20       wxPaintDC, wxColour, wxClientDC, wxINVERT, wxTRANSPARENT_BRUSH, wxFont,\       wxPaintDC, wxColour, wxClientDC, wxINVERT, wxTRANSPARENT_BRUSH, wxFont,\
21       EVT_PAINT, EVT_LEFT_DOWN, EVT_LEFT_UP, EVT_MOTION, EVT_LEAVE_WINDOW, \       EVT_PAINT, EVT_LEFT_DOWN, EVT_LEFT_UP, EVT_MOTION, EVT_LEAVE_WINDOW, \
22       wxBITMAP_TYPE_XPM, wxCursor, wxPlatform, \       wxPlatform, wxBeginBusyCursor, wxEndBusyCursor, wxFileDialog, wxSAVE, \
      wxBeginBusyCursor, wxEndBusyCursor, wxFileDialog, wxSAVE, \  
23       wxOVERWRITE_PROMPT, wxID_OK       wxOVERWRITE_PROMPT, wxID_OK
24    
25  # Export related stuff  # Export related stuff
# Line 32  if wxPlatform == '__WXMSW__': Line 28  if wxPlatform == '__WXMSW__':
28    
29  from wxPython import wx  from wxPython import wx
30    
31  from wxproj import point_in_polygon_shape, shape_centroid  from Thuban.Model.messages import MAP_LAYERS_CHANGED, LAYER_CHANGED, \
32         LAYER_VISIBILITY_CHANGED
 from Thuban.Model.messages import \  
      MAP_PROJECTION_CHANGED, MAP_LAYERS_CHANGED, \  
      LAYER_PROJECTION_CHANGED, LAYER_CHANGED, LAYER_VISIBILITY_CHANGED  
33    
34  from renderer import ScreenRenderer, ExportRenderer, PrinterRenderer  from renderer import ScreenRenderer, ExportRenderer, PrinterRenderer
35    
36  import labeldialog  import labeldialog
37    
38  from viewport import ViewPort, PanTool  from viewport import ViewPort, PanTool, output_transform
39    
40  class CanvasPanTool(PanTool):  class CanvasPanTool(PanTool):
41    
# Line 87  class MapPrintout(wx.wxPrintout): Line 80  class MapPrintout(wx.wxPrintout):
80    
81      def draw_on_dc(self, dc):      def draw_on_dc(self, dc):
82          width, height = self.GetPageSizePixels()          width, height = self.GetPageSizePixels()
83          scale, offset, mapregion = OutputTransform(self.canvas.scale,          scale, offset, mapregion = output_transform(self.canvas.scale,
84                                                     self.canvas.offset,                                                      self.canvas.offset,
85                                                     self.canvas.GetSizeTuple(),                                                      self.canvas.GetSizeTuple(),
86                                                     self.GetPageSizePixels())                                                      self.GetPageSizePixels())
87          resx, resy = self.GetPPIPrinter()          resx, resy = self.GetPPIPrinter()
88          renderer = PrinterRenderer(dc, scale, offset, resolution = resy)          renderer = PrinterRenderer(dc, scale, offset, resolution = resy)
89          x, y, width, height = self.region          x, y, width, height = self.region
# Line 232  class MapCanvas(wxWindow, ViewPort): Line 225  class MapCanvas(wxWindow, ViewPort):
225              self.export_path = os.path.dirname(dlg.GetPath())              self.export_path = os.path.dirname(dlg.GetPath())
226              dc = wxMetaFileDC(dlg.GetPath())              dc = wxMetaFileDC(dlg.GetPath())
227            
228              scale, offset, mapregion = OutputTransform(self.scale,              scale, offset, mapregion = output_transform(self.scale,
229                                                         self.offset,                                                          self.offset,
230                                                         self.GetSizeTuple(),                                                          self.GetSizeTuple(),
231                                                         dc.GetSizeTuple())                                                          dc.GetSizeTuple())
232    
233              selected_layer = self.selection.SelectedLayer()              selected_layer = self.selection.SelectedLayer()
234              selected_shapes = self.selection.SelectedShapes()              selected_shapes = self.selection.SelectedShapes()
# Line 295  class MapCanvas(wxWindow, ViewPort): Line 288  class MapCanvas(wxWindow, ViewPort):
288              self.drag_dc.SetLogicalFunction(wxINVERT)              self.drag_dc.SetLogicalFunction(wxINVERT)
289              self.drag_dc.SetBrush(wxTRANSPARENT_BRUSH)              self.drag_dc.SetBrush(wxTRANSPARENT_BRUSH)
290              self.tool.Show(self.drag_dc)              self.tool.Show(self.drag_dc)
291                self.CaptureMouse()
292              self.dragging = 1              self.dragging = 1
293    
294      def OnLeftUp(self, event):      def OnLeftUp(self, event):
# Line 347  class MapCanvas(wxWindow, ViewPort): Line 341  class MapCanvas(wxWindow, ViewPort):
341    
342      def LabelShapeAt(self, x, y, text=None):      def LabelShapeAt(self, x, y, text=None):
343          """Add or remove a label at window position x, y.          """Add or remove a label at window position x, y.
344                                                                                    
345          If there's a label at the given position, remove it. Otherwise          If there's a label at the given position, remove it. Otherwise
346          determine the shape at the position, run the label dialog and          determine the shape at the position, run the label dialog and
347          unless the user cancels the dialog, add a label.          unless the user cancels the dialog, add a label.
# Line 361  class MapCanvas(wxWindow, ViewPort): Line 355  class MapCanvas(wxWindow, ViewPort):
355                                                  layer.ShapeStore().Table(),                                                  layer.ShapeStore().Table(),
356                                                  shape_index)                                                  shape_index)
357              ViewPort.LabelShapeAt(self, x, y, text)              ViewPort.LabelShapeAt(self, x, y, text)
           
 def OutputTransform(canvas_scale, canvas_offset, canvas_size, device_extend):  
     """Calculate dimensions to transform canvas content to output device."""  
     width, height = device_extend  
   
     # Only 80 % of the with are available for the map  
     width = width * 0.8  
   
     # Define the distance of the map from DC border  
     distance = 20  
   
     if height < width:  
         # landscape  
         map_height = height - 2*distance  
         map_width = map_height  
     else:  
         # portrait, recalibrate width (usually the legend width is too  
         # small  
         width = width * 0.9  
         map_height = width - 2*distance  
         map_width = map_height  
       
     mapregion = (distance, distance,  
                  distance+map_width, distance+map_height)  
   
     canvas_width, canvas_height = canvas_size  
       
     scalex = map_width / (canvas_width/canvas_scale)  
     scaley = map_height / (canvas_height/canvas_scale)  
     scale = min(scalex, scaley)  
     canvas_offx, canvas_offy = canvas_offset  
     offx = scale*canvas_offx/canvas_scale  
     offy = scale*canvas_offy/canvas_scale  
   
     return scale, (offx, offy), mapregion  
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