Class: Wx::SF::Printout

Inherits:
PRT::Printout
  • Object
show all
Defined in:
lib/wx/shapes/printout.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(title, canvas) ⇒ Printout

Constructor.

Parameters:

  • title (String)
  • canvas (ShapeCanvas) —

    canvas to print



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# File 'lib/wx/shapes/printout.rb', line 11

def initialize(title, canvas)
  super(title)
  @canvas = canvas
end

Instance Attribute Details

#canvas ⇒ Object

Access (set/get) canvas (to be) printed.



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# File 'lib/wx/shapes/printout.rb', line 17

def canvas
  @canvas
end

Instance Method Details

#get_page_info ⇒ Object

Called by printing framework. Supply information about printed pages. This function can be overridden if necessary.



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# File 'lib/wx/shapes/printout.rb', line 117

def get_page_info
  [1,1,1,1]
end

#has_page(page) ⇒ Object

Called by printing framework. Functions TRUE if a page of given index already exists in printed document. This function can be overridden if necessary.



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# File 'lib/wx/shapes/printout.rb', line 21

def has_page(page)
  page == 1
end

#on_begin_document(start_page, end_page) ⇒ Object

Called by printing framework. Initialize print job. This function can be overridden if necessary.



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# File 'lib/wx/shapes/printout.rb', line 26

def on_begin_document(start_page, end_page)
  # HINT: perform custom actions...
  super
end

#on_end_document ⇒ Object

Called by printing framework. Deinitialize the print job. This function can be overridden if necessary.



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# File 'lib/wx/shapes/printout.rb', line 32

def on_end_document
  # HINT: perform custom actions...
  super
end

#on_print_page(page) ⇒ Object

Called by printing framework. It does the print job. This function can be overridden if necessary.



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# File 'lib/wx/shapes/printout.rb', line 38

def on_print_page(page)
  dc = get_dc
  if dc && @canvas
    # get drawing size
    total_bb = @canvas.get_total_bounding_box
    max_x = total_bb.right
    max_y = total_bb.bottom
  
    # set printing mode
    case @canvas.get_print_mode
    when ShapeCanvas::PRINTMODE::FIT_TO_PAGE
      fit_this_size_to_page([max_x, max_y])
      fit_rect = get_logical_page_rect

    when ShapeCanvas::PRINTMODE::FIT_TO_PAPER
      fit_this_size_to_paper([max_x, max_y])
      fit_rect = get_logical_paper_rect

    when ShapeCanvas::PRINTMODE::FIT_TO_MARGINS
      fit_this_size_to_page_margins([max_x, max_y], ShapeCanvas.page_setup_data)
      fit_rect = get_logical_page_margins_rect(ShapeCanvas.page_setup_data)

    when ShapeCanvas::PRINTMODE::MAP_TO_PAGE
      map_screen_size_to_page
      fit_rect = get_logical_page_rect

    when ShapeCanvas::PRINTMODE::MAP_TO_PAPER
      map_screen_size_to_paper
      fit_rect = get_logical_paper_rect

    when ShapeCanvas::PRINTMODE::MAP_TO_MARGINS
      map_screen_size_to_page
      fit_rect = get_logical_page_margins_rect(ShapeCanvas.page_setup_data)

    when ShapeCanvas::PRINTMODE::MAP_TO_DEVICE
      map_screen_size_to_device
      fit_rect = get_logical_page_rect

    else
      fit_rect = Wx::Rect.new
    end

    # This offsets the image so that it is centered within the reference
    # rectangle defined above.
    xoff = ((fit_rect.width - max_x - total_bb.left) / 2) - fit_rect.x
    yoff = ((fit_rect.height - max_y - total_bb.top) / 2) - fit_rect.y
  
    case @canvas.get_print_h_align
    when ShapeCanvas::HALIGN::LEFT
      xoff = 0
    when ShapeCanvas::HALIGN::RIGHT
      xoff = fit_rect.width - total_bb.width
    end
  
    case @canvas.get_print_v_align
    when ShapeCanvas::VALIGN::TOP
      yoff = 0
    when ShapeCanvas::VALIGN::BOTTOM
      yoff = fit_rect.height - total_bb.height
    end
  
    offset_logical_origin(xoff, yoff)
  
    # store current canvas properties
    prev_scale = @canvas.get_scale

    # draw the canvas content without any scale (dc is scaled by the printing framework)
    @canvas.set_scale(1.0)
    @canvas.draw_background(dc, NOT_FROM_PAINT) if @canvas.has_style?(ShapeCanvas::STYLE::PRINT_BACKGROUND)
    @canvas.draw_content(dc, NOT_FROM_PAINT)
    @canvas.draw_foreground(dc, NOT_FROM_PAINT)
    @canvas.set_scale(prev_scale)
  
    return true
  end
  false
end