Create button.lua

demos/button.lua

@@ -0,0 +1,67 @@
+-- button.lua
+local fenster = require("fenster");
+
+counter = 0;
+
+-- Button factory (no label)
+function button(window, x, y, width, height, color1, color2, on_click_function)
+	return function()
+		local isMouseHovering = (window.mousex > x
+			and window.mousex < x + width
+			and window.mousey > y
+			and window.mousey < y + height);
+
+		if isMouseHovering then
+			for yPos = y, (y + height) do
+				for xPos = x, (x + width) do
+					window:set(xPos, yPos, color2);
+				end
+			end
+			fenster.sleep(10);
+		else
+			for yPos = y, (y + height) do
+				for xPos = x, (x + width) do
+					window:set(xPos, yPos, color1);
+				end
+			end
+			fenster.sleep(10);
+		end
+
+		if (on_click_function ~= nil
+		and window.mousedown
+		and isMouseHovering) then
+			on_click_function();
+		else
+			return fenster.sleep(10);
+		end
+
+		-- Do nothing until you let go of the mouse button
+		if window.mousedown then
+			while window:loop() and window.mousedown do
+				fenster.sleep(10);
+			end
+		end
+	end
+end
+
+function on_click()
+	counter = counter + 1;
+	print(counter);
+end
+
+function on_click2()
+	print("Hi fenster!");
+end
+
+function main()
+	local window = fenster.open(320, 240, "Button Test");
+	local btn1 = button(window, 110, 96, 100, 12, 0xcccccc, 0x8888ff, on_click);
+	local btn2 = button(window, 110, 116, 100, 12, 0xcccccc, 0x8888ff, on_click2);
+	window:clear(0x161616);
+	while window:loop() and not window.keys[27] do
+		btn1();
+		btn2();
+	end
+end
+
+main();