Dear ImGui

Supported platforms:
Available since: Gideros 2020.9

Description

This is an implementation of the Dear ImGui library.

See full original documentation here: https://pthom.github.io/imgui_manual_online/manual/imgui_manual.html

This is brand new in Gideros Studio so it may take some time to document it thoroughly.

In the meantime, the author's GitHub is the best place to start using Dear ImGui in Gideros Studio.

https://github.com/MultiPain/Gideros_ImGui

require 'ImGui'

Examples

The basics of Dear ImGui

require "ImGui"

-- a Dear ImGui instance
local imgui = ImGui.new()

-- we scale the font up
imgui:ioSetFontGlobalScale(2)

-- we choose a style (default = Dark)
--imgui:setLightStyle()
--imgui:setDarkStyle()
imgui:setClassicStyle()

-- we add imgui to the stage
stage:addChild(imgui)

-- we create 2 variables to hold our main window status
local mainWindowOpen, mainWindowDrawn

-- Dear ImGui runs on the game loop
function enterFrame(e)
	-- 1 we start ImGui
	imgui:newFrame(e)

	-- 2 we build our GUI
	mainWindowOpen, mainWindowDrawn =
		imgui:beginWindow(
			"Hello ImGui v"..ImGui._VERSION, -- main window title
			true -- main window is expanded
		)
	if (mainWindowDrawn) then -- the variable is false when main window is collapsed
		imgui:text("Hello Dear ImGui!") -- we add a text element to our GUI
	end
	imgui:endWindow()

	-- 3 we render our window
	imgui:endFrame()
	imgui:render()
end

-- this wouldn't work without listeners
stage:addEventListener("mouseDown", function(e) imgui:onMouseDown(e) end)
stage:addEventListener("mouseUp", function(e) imgui:onMouseUp(e) end)
stage:addEventListener("mouseHover", function(e) imgui:onMouseHover(e) end)
stage:addEventListener("mouseMove", function(e) imgui:onMouseMove(e) end)
stage:addEventListener("mouseWheel", function(e) imgui:onMouseWheel(e) end)
stage:addEventListener("keyDown", function(e) imgui:onKeyDown(e) end)
stage:addEventListener("keyUp", function(e) imgui:onKeyUp(e) end)
stage:addEventListener("keyChar", function(e) imgui:onKeyChar(e) end)
stage:addEventListener("enterFrame", enterFrame)

Methods

Events Constants

---

• Main Page
• Lua API
• Main API
• Plugins