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Contents
require 'fox16'
require 'tempfile'
begin
require 'GDChart'
rescue LoadError
require 'fox16/missingdep'
MSG = <<EOM
Sorry, this example depends on the GDChart extension. Please
check the Ruby Application Archives for an appropriate
download site.
EOM
missingDependency(MSG)
end
include Fox
class GDChartViewer < FXMainWindow
def initialize(app)
# Invoke base class initialize first
super(app, "GDChart Viewer", :opts => DECOR_ALL, :width => 850, :height => 600)
# Sunken border for image widget
imagebox = FXHorizontalFrame.new(self,
FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL_X|LAYOUT_FILL_Y)
# Make image widget
@imageview = FXImageView.new(imagebox,
:opts => LAYOUT_FILL_X|LAYOUT_FILL_Y|HSCROLLER_NEVER|VSCROLLER_NEVER)
# Construct a PNG image and store it in the image viewer
@imageview.image = createChart
# Resize main window client area to fit image size
resize(@imageview.contentWidth, @imageview.contentHeight)
end
def createChart
# Create a simple chart
GDChart.title = "A Chart"
GDChart.xtitle = "X-axis"
GDChart.ytitle = "Y-axis"
data = [1, 2, 3, 4, 5, 6]
labels = ["label 1", "label 2", "label 3", "label 4", "label 5", "label 6"]
# Write chart data out as GIF to a temporary file
File.open('gdchart.gif', 'w') do |f|
GDChart.out_graph(200, 200, f, GDChart::LINE, labels.length, labels, 1, data)
end
# Reopen it and construct image
img = nil
File.open('gdchart.gif', 'rb') do |f|
img = FXGIFIcon.new(getApp(), f.read)
end
img
end
def create
super
show(PLACEMENT_SCREEN)
end
end
if __FILE__ == $0
# Make application
application = FXApp.new("GDChart Viewer", "FoxTest")
# Make window
window = GDChartViewer.new(application)
# Create it
application.create
# Run
application.run
end
Version data entries
94 entries across 94 versions & 1 rubygems