synced samples

1 files changed, 53 insertions, 0 deletions

diff --git a/samples/11_http/01_retrieve_images/app/main.rb b/samples/11_http/01_retrieve_images/app/main.rb
new file mode 100644
index 0000000..53ece84
--- /dev/null
+++ b/samples/11_http/01_retrieve_images/app/main.rb
@@ -0,0 +1,53 @@
+def tick args
+  args.outputs.background_color = [0, 0, 0]
+
+  # Show a warning at the start.
+  args.state.warning_debounce ||= 11 * 60
+  if args.state.warning_debounce > 0
+    args.state.warning_debounce -= 1
+    args.outputs.labels << [640, 600, "This app shows random images from the Internet.", 10, 1, 255, 255, 255]
+    args.outputs.labels << [640, 500, "Quit in the next few seconds if this is a problem.", 10, 1, 255, 255, 255]
+    args.outputs.labels << [640, 350, "#{(args.state.warning_debounce / 60.0).to_i}", 10, 1, 255, 255, 255]
+    return
+  end
+
+  args.state.download_debounce ||= 0   # start immediately, reset to non zero later.
+  args.state.photos ||= []
+
+  # Put a little pause between each download.
+  if args.state.download.nil?
+    if args.state.download_debounce > 0
+      args.state.download_debounce -= 1
+    else
+      args.state.download = $gtk.http_get 'https://picsum.photos/200/300.jpg'
+    end
+  end
+
+  if !args.state.download.nil?
+    if args.state.download[:complete]
+      if args.state.download[:http_response_code] == 200
+        fname = "sprites/#{args.state.photos.length}.jpg"
+        $gtk.write_file fname, args.state.download[:response_data]
+        args.state.photos << [ 100 + rand(1080), 500 - rand(480), fname, rand(80) - 40 ]
+      end
+      args.state.download = nil
+      args.state.download_debounce = (rand(3) + 2) * 60
+    end
+  end
+
+  # draw any downloaded photos...
+  args.state.photos.each { |i|
+    args.outputs.primitives << [i[0], i[1], 200, 300, i[2], i[3]].sprite
+  }
+
+  # Draw a download progress bar...
+  args.outputs.primitives << [0, 0, 1280, 30, 0, 0, 0, 255].solid
+  if !args.state.download.nil?
+    br = args.state.download[:response_read]
+    total = args.state.download[:response_total]
+    if total != 0
+      pct = br.to_f / total.to_f
+      args.outputs.primitives << [0, 0, 1280 * pct, 30, 0, 0, 255, 255].solid
+    end
+  end
+end