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#!/usr/bin/env ruby # wxRuby2 Sample Code. Copyright (c) 2004-2008 wxRuby development team # Freely reusable code: see SAMPLES-LICENSE.TXT for details begin require 'rubygems' rescue LoadError end require 'wx' # This sample demonstrates how to draw an image from a file onto a # window. This one uses a small PNG file, but other formats such as JPEG # are supported - see documentation for more details. # # This sample uses the Wx::Bitmap class, which is a platform-specific # representation of an image. This is the class that must be used to # display an image, but see also Wx::Image, which allows a much wider # range of manipulations (such as rescaling) and writing to files. class ImageFrame < Wx::Frame def initialize super(nil, :title => 'Simple image demo') @offset = 10 size = 256+2*@offset self.client_size = [size, size] # Load a PNG bitmap from a file for drawing img_file = File.join( File.dirname(__FILE__)+"/../../art", 'wxruby-256x256.png') @bitmap = Wx::Bitmap.new(img_file) # Set up the drawing to be done when the frame needs re-painting evt_paint :on_paint end def on_paint paint do | dc | # Draw the bitmap at the specified offset with no transparency dc.draw_bitmap(@bitmap, @offset, @offset, false) end end end Wx::App.run do ImageFrame.new.show end