Created
March 5, 2010 13:09
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# WPF Clock in IronRuby! | |
# <t-edmor@microsoft.com> | |
require 'WindowsBase' | |
require 'PresentationFramework' | |
require 'PresentationCore' | |
require 'System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' | |
class Clock | |
CLOCK_WIDTH = 150 | |
CLOCK_HEIGHT = 150 | |
LABEL_HEIGHT = CLOCK_HEIGHT / 7 | |
LABEL_WIDTH = CLOCK_WIDTH / 7 | |
RADIUS = CLOCK_WIDTH / 2 | |
RADS = Math::PI / 180 | |
MIN_LOCATIONS = {} | |
HOUR_LOCATIONS = {} | |
def run! | |
plot_locations | |
@window = System::Windows::Window.new | |
@window.background = System::Windows::Media::Brushes.LightGray | |
@window.width = CLOCK_WIDTH * 2 | |
@window.height = CLOCK_HEIGHT * 2 | |
@window.resize_mode = System::Windows::ResizeMode.NoResize | |
@canvas = System::Windows::Controls::Canvas.new | |
@canvas.width = CLOCK_WIDTH | |
@canvas.height = CLOCK_HEIGHT | |
@minute_hand = System::Windows::Shapes::Line.new | |
@minute_hand.stroke = System::Windows::Media::Brushes.Black | |
@minute_hand.stroke_thickness = 1 | |
@minute_hand.x1 = CLOCK_WIDTH / 2 | |
@minute_hand.y1 = CLOCK_HEIGHT / 2 | |
@hour_hand = System::Windows::Shapes::Line.new | |
@hour_hand.stroke = System::Windows::Media::Brushes.Black | |
@hour_hand.stroke_thickness = 3 | |
@hour_hand.x1 = CLOCK_WIDTH / 2 | |
@hour_hand.y1 = CLOCK_HEIGHT / 2 | |
@canvas.children.add(@minute_hand) | |
@canvas.children.add(@hour_hand) | |
plot_face | |
plot_labels | |
plot_hands | |
@window.content = @canvas | |
app = System::Windows::Application.new | |
app.run(@window) | |
end | |
def plot_locations | |
for i in (0..60) | |
a = i * 6 | |
x = (RADIUS * Math.sin(a * RADS)).to_i + (CLOCK_WIDTH / 2) | |
y = (CLOCK_HEIGHT / 2) - (RADIUS * Math.cos(a * RADS)).to_i | |
coords = [x, y] | |
HOUR_LOCATIONS[i / 5] = coords if i % 5 == 0 | |
MIN_LOCATIONS[i] = coords | |
end | |
end | |
def plot_face | |
extra_x = (CLOCK_WIDTH * 0.15) | |
extra_y = (CLOCK_HEIGHT * 0.15) | |
face = System::Windows::Shapes::Ellipse.new | |
face.fill = System::Windows::Media::Brushes.White | |
face.width = CLOCK_WIDTH + extra_x | |
face.height = CLOCK_HEIGHT + extra_y | |
face.margin = System::Windows::Thickness.new(0 - (extra_x/2), 0 - (extra_y/2), 0, 0) | |
face.stroke = System::Windows::Media::Brushes.Gray | |
face.stroke_thickness = 1 | |
System::Windows::Controls::Canvas.set_z_index(face, -1) | |
@canvas.children.add(face) | |
end | |
def plot_labels | |
HOUR_LOCATIONS.each_pair do |p, coords| | |
unless p == 0 | |
lbl = System::Windows::Controls::Label.new | |
lbl.horizontal_content_alignment = System::Windows::HorizontalAlignment.Center | |
lbl.width = LABEL_WIDTH | |
lbl.height = LABEL_HEIGHT | |
lbl.content = p.to_s | |
lbl.margin = System::Windows::Thickness.new(coords[0] - (LABEL_WIDTH / 2), coords[1] - (LABEL_HEIGHT / 2), 0, 0) | |
lbl.padding = System::Windows::Thickness.new(0, 0, 0, 0) | |
@canvas.children.add(lbl) | |
end | |
end | |
end | |
def plot_hands | |
time = Time.now | |
hours = time.hour | |
minutes = time.min | |
if !@minutes || minutes != @minutes | |
@hours = hours >= 12 ? hours - 12 : hours | |
@minutes = minutes == 0 ? 60 : minutes | |
@minute_hand.dispatcher.begin_invoke(System::Windows::Threading::DispatcherPriority.Render, System::Action.new { | |
@minute_hand.x2 = MIN_LOCATIONS[@minutes][0] | |
@minute_hand.y2 = MIN_LOCATIONS[@minutes][1] | |
@hour_hand.x2 = HOUR_LOCATIONS[@hours][0] | |
@hour_hand.y2 = HOUR_LOCATIONS[@hours][1] | |
}) | |
end | |
end | |
end | |
clock = Clock.new | |
timer = System::Timers::Timer.new | |
timer.interval = 1000 | |
timer.elapsed { clock.plot_hands } | |
timer.enabled = true | |
clock.run! |
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