example.script

local JEDI = { "Luke", "Obi-Wan", "Yoda" }
local SITH = { "Maul", "Vader", "Palpatine" }


local function set_style()
	--[[local style = {}
	style.ChildBorderSize = 1
	style.PopupRounding = 0
	style.PopupBorderSize = 1
	style.FramePadding = vmath.vector3(4, 3, 0)
	style.FrameRounding = 0
	style.FrameBorderSize = 0
	style.ItemSpacing = vmath.vector3(8, 4, 0)
	style.ItemInnerSpacing = vmath.vector3(4, 4, 0)
	style.CellPadding = vmath.vector3(4, 2, 0)
	style.TouchExtraPadding = vmath.vector3(0, 0, 0)
	style.IndentSpacing = 21
	style.Alpha = 1
	style.ScrollbarSize = 14
	style.ScrollbarRounding = 9
	style.GrabMinSize = 10
	style.GrabRounding = 0
	style.LogSliderDeadzone = 4
	style.TabRounding = 4
	style.TabBorderSize = 0
	style.TabMinWidthForCloseButton = 0
	style.ColorButtonPosition = 1
	style.ButtonTextAlign = vmath.vector3(0.5, 0.5, 0)
	style.SelectableTextAlign = vmath.vector3(0, 0, 0)
	style.DisplayWindowPadding = vmath.vector3(19, 19, 0)
	style.DisplaySafeAreaPadding = vmath.vector3(3, 3, 0)
	style.MouseCursorScale = 1
	style.CircleSegmentMaxError = 1.6
	style.ColumnsMinSpacing = 6
	style.AntiAliasedLines = true
	style.AntiAliasedLinesUseTex = true
	style.AntiAliasedFill = true
	style.CurveTessellationTol = 1.25
	style.WindowPadding = vmath.vector3(8, 8, 0)
	style.WindowRounding = 0
	style.WindowBorderSize = 1
	style.WindowMinSize = vmath.vector3(32, 32, 0)
	style.WindowTitleAlign = vmath.vector3(0, 0.5, 0)
	style.WindowMenuButtonPosition = 0
	style.ChildRounding = 0
	imgui.set_style(style)--]]

	imgui.set_style_color(imgui.ImGuiCol_Text, 0.90, 0.90, 0.90, 0.90)
	imgui.set_style_color(imgui.ImGuiCol_TextDisabled, 0.60, 0.60, 0.60, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_WindowBg, 0.09, 0.09, 0.15, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_PopupBg, 0.05, 0.05, 0.10, 0.85)
	imgui.set_style_color(imgui.ImGuiCol_Border, 0.70, 0.70, 0.70, 0.65)
	imgui.set_style_color(imgui.ImGuiCol_BorderShadow, 0.00, 0.00, 0.00, 0.00)
	imgui.set_style_color(imgui.ImGuiCol_FrameBg, 0.00, 0.00, 0.01, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_FrameBgHovered, 0.90, 0.80, 0.80, 0.40)
	imgui.set_style_color(imgui.ImGuiCol_FrameBgActive, 0.90, 0.65, 0.65, 0.45)
	imgui.set_style_color(imgui.ImGuiCol_TitleBg, 0.00, 0.00, 0.00, 0.83)
	imgui.set_style_color(imgui.ImGuiCol_TitleBgCollapsed, 0.40, 0.40, 0.80, 0.20)
	imgui.set_style_color(imgui.ImGuiCol_TitleBgActive, 0.00, 0.00, 0.00, 0.87)
	imgui.set_style_color(imgui.ImGuiCol_MenuBarBg, 0.01, 0.01, 0.02, 0.80)
	imgui.set_style_color(imgui.ImGuiCol_ScrollbarBg, 0.20, 0.25, 0.30, 0.60)
	imgui.set_style_color(imgui.ImGuiCol_ScrollbarGrab, 0.55, 0.53, 0.55, 0.51)
	imgui.set_style_color(imgui.ImGuiCol_ScrollbarGrabHovered, 0.56, 0.56, 0.56, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_ScrollbarGrabActive, 0.56, 0.56, 0.56, 0.91)
	imgui.set_style_color(imgui.ImGuiCol_CheckMark, 0.90, 0.90, 0.90, 0.83)
	imgui.set_style_color(imgui.ImGuiCol_SliderGrab, 0.70, 0.70, 0.70, 0.62)
	imgui.set_style_color(imgui.ImGuiCol_SliderGrabActive, 0.30, 0.30, 0.30, 0.84)
	imgui.set_style_color(imgui.ImGuiCol_Button, 0.48, 0.72, 0.89, 0.49)
	imgui.set_style_color(imgui.ImGuiCol_ButtonHovered, 0.50, 0.69, 0.99, 0.68)
	imgui.set_style_color(imgui.ImGuiCol_ButtonActive, 0.80, 0.50, 0.50, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_Header, 0.30, 0.69, 1.00, 0.53)
	imgui.set_style_color(imgui.ImGuiCol_HeaderHovered, 0.44, 0.61, 0.86, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_HeaderActive, 0.38, 0.62, 0.83, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_ResizeGrip, 1.00, 1.00, 1.00, 0.85)
	imgui.set_style_color(imgui.ImGuiCol_ResizeGripHovered, 1.00, 1.00, 1.00, 0.60)
	imgui.set_style_color(imgui.ImGuiCol_ResizeGripActive, 1.00, 1.00, 1.00, 0.90)
	imgui.set_style_color(imgui.ImGuiCol_PlotLines, 1.00, 1.00, 1.00, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_PlotLinesHovered, 0.90, 0.70, 0.00, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_PlotHistogram, 0.90, 0.70, 0.00, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_PlotHistogramHovered, 1.00, 0.60, 0.00, 1.00)
	imgui.set_style_color(imgui.ImGuiCol_TextSelectedBg, 0.00, 0.00, 1.00, 0.35)
end

local function make_data(self)
	self.values_line = {}
	self.values_hist = {}
	for i=1, 60 do 
		local data = math.random(1, 30)
		self.values_hist[data] = (self.values_hist[data] or 0) + 1
		table.insert(self.values_line, data)
	end
end

function init(self)
	self.counter = 0
	self.radio = 1
	self.show_demo_window = false
	self.show_close_window = false
	self.show_live_data = false

	self.values_line = {}
	self.values_hist = {}
	make_data(self)


	imgui.set_ini_filename()
	set_style()
	self.style = imgui.get_style()
	local scale = 2
	imgui.scale_all_sizes(scale)

	local fontsize 		= 12.0 * scale
	local fontsizebase 	= 12.0 * scale
	self.fonts 	= {}
	local regular_data, error = sys.load_resource("/example/bundle/fonts/Montserrat-Regular.ttf")
	self.fonts["Regular"] = imgui.font_add_ttf_data(regular_data, #regular_data, fontsize, fontsizebase)
	local bold_data, error = sys.load_resource("/example/bundle/fonts/Montserrat-Bold.ttf")
	self.fonts["Bold"] = imgui.font_add_ttf_data(bold_data, #bold_data, fontsize, fontsizebase)
	local italic_data, error = sys.load_resource("/example/bundle/fonts/Montserrat-Italic.ttf")
	self.fonts["Italic"] = imgui.font_add_ttf_data(italic_data, #italic_data, fontsize, fontsizebase)
	local bolditalic_data, error = sys.load_resource("/example/bundle/fonts/Montserrat-BoldItalic.ttf")
	self.fonts["BoldItalic"] = imgui.font_add_ttf_data(bolditalic_data, #bolditalic_data, fontsize, fontsizebase)

	-- Resource based Image 
	local img1_data, error = sys.load_resource("/example/bundle/images/image1.png") 
	self.image1 = imgui.image_load_data("image1", img1_data, #img1_data)

	-- File based Image can be used on desktop platforms
	-- self.image1 = imgui.image_load("example/images/image1.png")

	local img2_data, error = sys.load_resource("/example/bundle/images/image2.png") 
	self.image2 = imgui.image_load_data("image2", img2_data, #img2_data)
end

local function close_window(self)
	local flags = imgui.WINDOWFLAGS_NOMOVE
	local full, open = imgui.begin_window("Close window", true, flags)
	if full then
		imgui.text("You can close this window, but cannot move")
	end
	imgui.end_window()
	
	if not open then
		self.show_close_window = false
	end
end

local function update_tab1(self)
	imgui.text("This is some useful text.")
	local changed, checked = imgui.checkbox("Demo window", self.show_demo_window)
	if changed then
		self.show_demo_window = checked
	end

	imgui.separator()

	if imgui.radio_button("Option 1", self.radio == 1) then
		self.radio  = 1
	end
	if imgui.radio_button("Option 2", self.radio == 2) then
		self.radio  = 2
	end
	if imgui.radio_button("Option 3", self.radio == 3) then
		self.radio  = 3
	end

	imgui.separator()

	if imgui.button("Button") then
		self.counter = self.counter + 1
	end
	imgui.same_line()
	imgui.text(("counter = %d"):format(self.counter))

	imgui.separator()

	local pos = go.get_position("object")
	local changed, x, y, z = imgui.input_float3("pos", pos.x, pos.y, pos.z)
	if changed then
		pos.x = x
		pos.y = y
		pos.z = z
		go.set_position(pos, "object")
	end

	local changed, x, y, z = imgui.input_int4("posi", pos.x, pos.y, pos.z, 0)
	if changed then
		pos.x = x
		pos.y = y
		pos.z = z
		go.set_position(pos, "object")
	end
	
	local changed, int = imgui.input_int("test int", self.int or 0)
	if changed then
		self.int = int
	end

	if imgui.button("open window with close button") then
		self.show_close_window = true;
	end

	if imgui.begin_table("table_example", 3) then
		imgui.table_setup_scroll_freeze(1, 1)
		imgui.table_setup_column("FIRST NAME")
		imgui.table_setup_column("LAST NAME")
		imgui.table_setup_column("AGE")
		imgui.table_headers_row()

		imgui.table_next_row()
		imgui.table_next_column()
		imgui.text("Bilbo")
		imgui.table_next_column()
		imgui.text("Baggins")
		imgui.table_next_column()
		imgui.text("129")

		imgui.table_next_row()
		imgui.table_next_column()
		imgui.text("Frodo")
		imgui.table_next_column()
		imgui.text("Baggins")
		imgui.table_next_column()
		imgui.text("51")

		imgui.end_table()
	end

	imgui.separator()

	-- Manual wrapping
	imgui.text("Manual wrapping:")

	local button_count = 20
	local button_size = 60
	local window_pos_x, window_pos_y = imgui.get_window_pos()
	local region_x, region_y = imgui.get_window_content_region_max()
	local window_visible_x = window_pos_x + region_x
	local spacing_x = self.style.ItemSpacing.x

	for n = 1, button_count do
		imgui.push_id(tostring(n))
		imgui.button("Box", button_size, button_size)
		local last_button_x, last_button_y = imgui.get_item_rect_max()
		local next_button_x = last_button_x + spacing_x + button_size
		if (n  < button_count and next_button_x < window_visible_x) then
			imgui.same_line()
		end
		imgui.pop_id()
	end
end

local function update_tab2(self)
	local selected = imgui.tree_node("root")
	if selected then
		imgui.bullet()
		self.foo_selected = imgui.selectable("foo", self.foo_selected)
		imgui.bullet()
		self.bar_selected = imgui.selectable("bar", self.bar_selected)
		imgui.tree_pop()
	end


	-- this is the old way of creating combo boxes
	-- it still exists in the ImGUI API since it's a quick way ti create a combo box
	local changed, jedi = imgui.combo("Jedi##array", self.selected_jedi or 1, JEDI)
	if changed then
		self.selected_jedi = jedi
	end

	-- new way of creating combo boxes with a begin and end function
	if imgui.begin_combo("Jedi##selectable", "Select a Jedi") then
		for i=1,#JEDI do
			if imgui.selectable(JEDI[i], i == (self.selected_jedi or 1)) then
				self.selected_jedi = i
			end
		end
		imgui.end_combo()
	end

	imgui.separator()

	if imgui.button("Push me to focus on test double") then
		imgui.set_keyboard_focus_here(0)
	end
	local testdbl = self.testdbl or 0
	local changed, value = imgui.input_double("test double", testdbl, 0.0001, 0.01, 5)
	if changed then
		self.testdbl = value
	end
	
	local progress = self.progress or 0
	local changed, p = imgui.input_float("progress float", progress, 0.01, 1.0, 3)
	if changed then
		self.progress = p
		progress = p
	end

	imgui.separator()
	imgui.draw_progress(progress, -1, 0.0)
	imgui.separator()

	local changed, p = imgui.slider_float("slider float", self.slider_float or 0, 0.0, 100.0)
	if changed then
		self.slider_float = p
	end
		
	imgui.push_id("first")
	if imgui.button("Same name") then
		pprint("first same button")
	end
	imgui.pop_id()

	imgui.push_id("second")
	if imgui.button("Same name") then
		pprint("second same button")
	end
	imgui.pop_id()
end

local function update_tab3(self)

	local changed, checked = imgui.checkbox("Live Data", self.show_live_data)
	if changed then
		self.show_live_data = checked
	end

	if(self.show_live_data == true) then 
		make_data(self)
	end
	imgui.separator()
	
	imgui.text_colored(" Data Plot ", 1, 0, 0, 1 )
	imgui.plot_lines( "Data", 0, 150, 40, self.values_line )

	imgui.separator()
	
	imgui.text_colored(" Data Histogram ", 0, 1, 0, 1 )
	imgui.plot_histogram( "Histogram", 0, 150, 40, self.values_hist )

	imgui.separator()
end

-- Example images and font styles
local function update_tab4(self)

	imgui.font_push(self.fonts["Regular"])
	imgui.text_colored("Example Text Regular", 1, 1, 1, 1 )
	imgui.font_pop()
	imgui.separator()
	imgui.font_push(self.fonts["Bold"])
	imgui.text_colored("Example Text Bold", 1, 1, 1, 1 )
	imgui.font_pop()
	imgui.separator()
	imgui.font_push(self.fonts["Italic"])
	imgui.text_colored("Example Text Italic", 1, 1, 1, 1 )
	imgui.font_pop()
	imgui.separator()
	imgui.font_push(self.fonts["BoldItalic"])
	imgui.text_colored("Example Text Bold Italic", 1, 1, 1, 1 )
	imgui.font_pop()
	imgui.separator()
	
	imgui.font_push(self.fonts["Regular"])
	imgui.text_colored("image stretched", 1, 1, 1, 1 )
	imgui.image_add(self.image1, 150,20)

	imgui.text_colored("image original aspect", 1, 1, 1, 1 )
	imgui.image_add(self.image2, 150,150)
	imgui.font_pop()
end


local function update_tab5(self)
	if imgui.tree_node("Jedi vs Sith") then
		imgui.text("Right click for some info")
		for i=1,#JEDI do
			imgui.tree_node(JEDI[i], imgui.TREENODE_LEAF + imgui.TREENODE_NO_TREE_PUSH_ON_OPEN)
			if imgui.begin_dragdrop_source(imgui.DROPFLAGS_SOURCEALLOWNULLID) then
				imgui.set_dragdrop_payload("jedi", JEDI[i])
				imgui.end_dragdrop_source()
			end
			if imgui.begin_popup_context_item("jedipop" .. i) then
				imgui.text("This is a Jedi")
				imgui.end_popup()
			end
		end
		for i=1,#SITH do
			imgui.tree_node(SITH[i], imgui.TREENODE_LEAF + imgui.TREENODE_NO_TREE_PUSH_ON_OPEN)
			if imgui.begin_dragdrop_source(imgui.DROPFLAGS_SOURCEALLOWNULLID) then
				imgui.set_dragdrop_payload("sith", SITH[i])
				imgui.end_dragdrop_source()
			end
			if imgui.begin_popup_context_item("sithpop" .. i) then
				imgui.text("This is a Sith")
				imgui.end_popup()
			end
		end
		imgui.tree_pop()
	end
	
	imgui.separator()
	
	imgui.text("Drop Jedi and Sith here")
	if imgui.begin_dragdrop_target() then
		if imgui.accept_dragdrop_payload("jedi") then
			self.counter = self.counter + 1
		elseif imgui.accept_dragdrop_payload("sith") then
			self.counter = self.counter - 1
		end
		imgui.end_dragdrop_target()
	end
	imgui.text("Counter " .. self.counter)
	
end

-- Loosely based on "Widgets Width" part of imgui_demo
local function update_tab6(self)
	if not self.tab6_f then self.tab6_f = 0 end
	
	imgui.text("SetNextItemWidth(200)")
	imgui.same_line()
	imgui.set_next_item_width(200)
	local changed, f = imgui.input_float("float##1", self.tab6_f)
	if changed then
		self.tab6_f = f
	end
	
	imgui.text("SetNextItemWidth(GetWindowWidth() * 0.5f)")
	imgui.same_line()
	local w,h = imgui.get_window_size()
	imgui.set_next_item_width(w * 0.5)
	local changed, f = imgui.input_float("float##2", self.tab6_f)
	if changed then
		self.tab6_f = f
	end
	
	imgui.text("SetNextItemWidth(GetContentRegionAvail().x * 0.5f)")
	imgui.same_line()
	local aw, ah = imgui.get_content_region_avail()
	imgui.set_next_item_width(aw * 0.5)
	local changed, f = imgui.input_float("float##3", self.tab6_f)
	if changed then
		self.tab6_f = f
	end
	
	imgui.text("SetNextItemWidth(-200)")
	imgui.same_line()
	imgui.set_next_item_width(-200)
	local changed, f = imgui.input_float("float##4", self.tab6_f)
	if changed then
		self.tab6_f = f
	end
end

local function main_menu_bar(self)
	if imgui.begin_main_menu_bar() then
		if imgui.begin_menu("File") then
			if imgui.menu_item("Quit", "Ctrl+Q") then
				sys.exit(0)
			end

			imgui.end_menu()
		end

		if imgui.begin_menu("View") then
			local clicked = imgui.menu_item("Show Demo Window", nil, self.show_demo_window)
			if clicked then
				self.show_demo_window = not self.show_demo_window
			end

			imgui.end_menu()
		end

		if imgui.begin_menu("About") then
			imgui.menu_item("Defold v" .. sys.get_engine_info().version, nil, nil, false)

			imgui.end_menu()
		end

		imgui.end_main_menu_bar()
	end
end

local function nested_menu(self)
	if imgui.begin_menu("Nested Menu") then
		imgui.menu_item("Nested Item")
		nested_menu(self)
		imgui.end_menu()
	end
end

local function menu_bar(self)
	if imgui.begin_menu_bar() then
		if imgui.begin_menu("Menu") then
			if imgui.menu_item("Menu Item") then
				print("Clicked 'Menu Item'")
			end

			-- Shortcuts are only visual, ImGui doesn't currently use them
			imgui.menu_item("Has Shortcut", "Ctrl+A")

			local changed, active = imgui.menu_item("Toggleable Item", nil, self.toggle_item_active)
			if changed then
				self.toggle_item_active = active
				print("'Toggleable Item' is " .. (self.toggle_item_active and "on" or "off"))
			end

			imgui.menu_item("Disabled Item", nil, nil, false)

			if imgui.begin_menu("Nested Menu") then
				imgui.menu_item("Item")
				nested_menu(self)
				imgui.end_menu()
			end

			if imgui.menu_item("Click Me!") then
				sys.exit(0)
			end

			imgui.end_menu()
		end

		if imgui.begin_menu("Other Menu") then
			if imgui.menu_item("Other Menu Item") then
				print("Clicked 'Other Menu Item'")
			end
			imgui.end_menu()
		end

		imgui.end_menu_bar()
	end
end


function update(self, dt)
	main_menu_bar(self)

	if self.show_demo_window then
		imgui.demo()
	end

	if self.show_close_window then
		close_window(self)
	end

	imgui.begin_window("Hello, world!", nil, imgui.WINDOWFLAGS_MENUBAR)
	menu_bar(self)
	imgui.begin_tab_bar("tabs")

	local tab1_open = imgui.begin_tab_item("Tab1")
	if tab1_open then
		update_tab1(self)
		imgui.end_tab_item()
	end

	local tab2_open = imgui.begin_tab_item("Tab2")
	if tab2_open then
		update_tab2(self)
		imgui.end_tab_item()
	end

	local tab3_open = imgui.begin_tab_item("Tab3")
	if tab3_open then
		update_tab3(self)
		imgui.end_tab_item()
	end

	local tab4_open = imgui.begin_tab_item("Tab4")
	if tab4_open then
		update_tab4(self)
		imgui.end_tab_item()
	end

	local tab5_open = imgui.begin_tab_item("Tab5")
	if tab5_open then
		update_tab5(self)
		imgui.end_tab_item()
	end

	local tab6_open = imgui.begin_tab_item("Tab6")
	if tab6_open then
		update_tab6(self)
		imgui.end_tab_item()
	end
		
	imgui.end_tab_bar()
	imgui.end_window()
end