initial commit

example/calculator.lua

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+-- Simple calculator example, adapted from the original nuklear demo.
+
+local nk = require 'nuklear'
+
+local ops = {'+', '-', '*', '/'}
+local a, b, op = '0'
+
+local function clear()
+	a, b, op = '0'
+end
+
+local function digit(d)
+	if op then
+		if b == nil or b == '0' then
+			b = d
+		else
+			b = b..d
+		end
+	else
+		if a == '0' then
+			a = d
+		else
+			a = a..d
+		end
+	end
+end
+
+local function decimal()
+	if op then
+		b = b or '0'
+		b = b:find('.') and b or b..'.'
+	else
+		a = a:find('.') and a or a..'.'
+	end
+end
+
+local function equals()
+	if not tonumber(b) then
+		return
+	end
+	if op == '+' then
+		a, b, op = tostring(tonumber(a) + tonumber(b))
+	elseif op == '-' then
+		a, b, op = tostring(tonumber(a) - tonumber(b))
+	elseif op == '*' then
+		a, b, op = tostring(tonumber(a) * tonumber(b))
+	elseif op == '/' then
+		a, b, op = tostring(tonumber(a) / tonumber(b))
+	end
+end
+
+local function operator(o)
+	if op then
+		equals()
+	end
+	op = o
+end
+
+local function display()
+	return b or a
+end
+
+return function ()
+	if nk.window_begin('Calculator', 50, 50, 180, 250, 'border', 'movable', 'title') then
+		nk.layout_row('dynamic', 35, 1)
+		nk.label(display(), 'right')
+		nk.layout_row('dynamic', 35, 4)
+		for i=1,16 do
+			if i >= 13 and i < 16 then
+				if i == 13 then
+					if nk.button('C') then
+						clear()
+					end
+					if nk.button('0') then
+						digit('0')
+					end
+					if nk.button('=') then
+						equals()
+					end
+				end
+			elseif i % 4 ~= 0 then
+				local d = tostring(math.floor(i / 4) * 3 + (i % 4))
+				if nk.button(d) then
+					digit(d)
+				end
+			else
+				local o = ops[math.floor(i / 4)]
+				if nk.button(o) then
+					operator(o)
+				end
+			end
+		end
+	end
+	nk.window_end()
+end

example/main.lua

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+-- Several simple examples.
+
+local nk = require 'nuklear'
+
+local calculator = require 'calculator'
+local overview = require 'overview'
+local style = require 'style'
+local skin = require 'skin'
+
+function love.load()
+	nk.init()
+end
+
+function love.update(dt)
+	nk.frame_begin()
+		calculator()
+		style()
+		overview()
+		skin()
+	nk.frame_end()
+end
+
+function love.draw()
+	nk.draw()
+end
+
+function love.keypressed(key, scancode, isrepeat)
+	nk.keypressed(key, scancode, isrepeat)
+end
+
+function love.keyreleased(key, scancode)
+	nk.keyreleased(key, scancode)
+end
+
+function love.mousepressed(x, y, button, istouch)
+	nk.mousepressed(x, y, button, istouch)
+end
+
+function love.mousereleased(x, y, button, istouch)
+	nk.mousereleased(x, y, button, istouch)
+end
+
+function love.mousemoved(x, y, dx, dy, istouch)
+	nk.mousemoved(x, y, dx, dy, istouch)
+end
+
+function love.textinput(text)
+	nk.textinput(text)
+end
+
+function love.wheelmoved(x, y)
+	nk.wheelmoved(x, y)
+end

example/overview.lua

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+-- An overview of most of the supported widgets.
+
+local nk = require 'nuklear'
+
+local checkA = {value = false}
+local checkB = {value = true}
+local radio = {value = 'A'}
+local selectA = {value = false}
+local selectB = {value = true}
+local slider = {value = 0.2}
+local progress = {value = 1}
+local colorPicker = {value = '#ff0000'}
+local property = {value = 6}
+local edit = {value = 'Edit text'}
+local comboA = {value = 1, items = {'A', 'B', 'C'}}
+
+return function ()
+	if nk.window_begin('Overview', 100, 100, 600, 450, 'border', 'movable', 'title') then
+		nk.menubar_begin()
+		nk.layout_row('dynamic', 30, 1)
+		if nk.menu_begin('Menu', nil, 120, 90) then
+			nk.layout_row('dynamic', 40, 1)
+			nk.menu_item('Item A')
+			nk.menu_item('Item B')
+			nk.menu_item('Item C')
+			nk.menu_end()
+		end
+		nk.menubar_end()
+		nk.layout_row('dynamic', 400, 3)
+		nk.group_begin('Group 1', 'border')
+			nk.layout_row('dynamic', 30, 1)
+			nk.label('Left label')
+			nk.label('Centered label', 'centered')
+			nk.label('Right label', 'right')
+			nk.label('Colored label', 'left', '#ff0000')
+			if nk.tree_push('tab', 'Tree Tab') then
+				if nk.tree_push('node', 'Tree Node 1') then
+					nk.label('Label 1')
+					nk.tree_pop()
+				end
+				if nk.tree_push('node', 'Tree Node 2') then
+					nk.label('Label 2')
+					nk.tree_pop()
+				end
+				nk.tree_pop()
+			end
+			nk.spacing(1)
+			if nk.button('Button') then
+				print('button pressed!')
+			end
+			nk.spacing(1)
+			nk.checkbox('Checkbox A', checkA)
+			nk.checkbox('Checkbox B', checkB)
+		nk.group_end()
+		nk.group_begin('Group 2', 'border')
+			nk.layout_row('dynamic', 30, 1)
+			nk.label('Radio buttons:')
+			nk.layout_row('dynamic', 30, 3)
+			nk.radio('A', radio)
+			nk.radio('B', radio)
+			nk.radio('C', radio)
+			nk.layout_row('dynamic', 30, 1)
+			nk.selectable('Selectable A', selectA)
+			nk.selectable('Selectable B', selectB)
+			nk.layout_row('dynamic', 30, {.35, .65})
+			nk.label('Slider:')
+			nk.slider(0, slider, 1, 0.05)
+			nk.label('Progress:')
+			nk.progress(progress, 10, true)
+			nk.layout_row('dynamic', 30, 2)
+			nk.spacing(2)
+			nk.label('Color picker:')
+			nk.button(nil, colorPicker.value)
+			nk.layout_row('dynamic', 90, 1)
+			nk.color_picker(colorPicker)
+		nk.group_end()
+		nk.group_begin('Group 3', 'border')
+			nk.layout_row('dynamic', 30, 1)
+			nk.property('Property', 0, property, 10, 0.25, 0.05)
+			nk.spacing(1)
+			nk.label('Edit:')
+			nk.layout_row('dynamic', 90, 1)
+			nk.edit('box', edit)
+			nk.layout_row('dynamic', 5, 1)
+			nk.spacing(1)
+			nk.layout_row('dynamic', 30, 1)
+			nk.label('Combobox:')
+			nk.combobox(comboA, comboA.items)
+			nk.layout_row('dynamic', 5, 1)
+			nk.spacing(1)
+			nk.layout_row('dynamic', 30, 1)
+			if nk.widget_is_hovered() then
+				nk.tooltip('Test tooltip')
+			end
+			local x, y, w, h = nk.widget_bounds()
+			if nk.contextual_begin(100, 100, x, y, w, h) then
+				nk.layout_row('dynamic', 30, 1)
+				nk.contextual_item('Item A')
+				nk.contextual_item('Item B')
+				nk.contextual_end()
+			end
+			nk.label('Contextual (Right click me)')
+		nk.group_end()
+	end
+	nk.window_end()
+end

example/skin.lua

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+local nk = require 'nuklear'
+
+local window_header = love.graphics.newImage 'skin/window_header.png'
+local checkbox_skin = love.graphics.newImage 'skin/checkbox_false.png'
+local checkbox_check = love.graphics.newImage 'skin/checkbox_true.png'
+
+local style = {
+	['text'] = {
+		['color'] = '#000000'
+	},
+	['button'] = {
+		['normal'] = love.graphics.newImage 'skin/button.png',
+		['hover'] = love.graphics.newImage 'skin/button_hover.png',
+		['active'] = love.graphics.newImage 'skin/button_active.png',
+		['text background'] = '#00000000',
+		['text normal'] = '#000000',
+		['text hover'] = '#000000',
+		['text active'] = '#ffffff'
+	},
+	['checkbox'] = {
+		['normal'] = checkbox_skin,
+		['hover'] = checkbox_skin,
+		['active'] = checkbox_skin,
+		['cursor normal'] = checkbox_check,
+		['cursor hover'] = checkbox_check,
+		['text normal'] = '#000000',
+		['text hover'] = '#000000',
+		['text active'] = '#000000',
+		['text background'] = '#d3ceaa'
+	},
+	['window'] = {
+		['header'] = {
+			['normal'] = window_header,
+			['hover'] = window_header,
+			['active'] = window_header,
+			['label normal'] = '#000000',
+			['label hover'] = '#000000',
+			['label active'] = '#000000',
+			['label padding'] = {x = 10, y = 8}
+		},
+		['fixed background'] = love.graphics.newImage 'skin/window.png',
+		['background'] = '#d3ceaa'
+	}
+}
+
+local check = {value = false}
+
+return function ()
+	nk.style_push(style)
+	if nk.window_begin('Skin Example', 200, 200, 350, 200, 'title', 'movable') then
+		nk.layout_space_begin('dynamic', 150, 3)
+		nk.layout_space_push(0.14, 0.15, 0.72, 0.3)
+		nk.label('Skin example! Styles can change skins, colors, padding, font, and more.', 'wrap')
+		nk.layout_space_push(0.2, 0.55, 0.2, 0.2)
+		nk.button('Button')
+		nk.layout_space_push(0.55, 0.55, 0.3, 0.2)
+		nk.checkbox('Checkbox', check)
+		nk.layout_space_end()
+	end
+	nk.window_end()
+	nk.style_pop()
+end

example/style.lua

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+-- Show off some of the styling options.
+
+local nk = require 'nuklear'
+
+local colors = {
+	['text'] = '#afafaf',
+	['window'] = '#2d2d2d',
+	['header'] = '#282828',
+	['border'] = '#414141',
+	['button'] = '#323232',
+	['button hover'] = '#282828',
+	['button active'] = '#232323',
+	['toggle'] = '#646464',
+	['toggle hover'] = '#787878',
+	['toggle cursor'] = '#2d2d2d',
+	['select'] = '#2d2d2d',
+	['select active'] = '#232323',
+	['slider'] = '#262626',
+	['slider cursor'] = '#646464',
+	['slider cursor hover'] = '#787878',
+	['slider cursor active'] = '#969696',
+	['property'] = '#262626',
+	['edit'] = '#262626',
+	['edit cursor'] = '#afafaf',
+	['combo'] = '#2d2d2d',
+	['chart'] = '#787878',
+	['chart color'] = '#2d2d2d',
+	['chart color highlight'] = '#ff0000',
+	['scrollbar'] = '#282828',
+	['scrollbar cursor'] = '#646464',
+	['scrollbar cursor hover'] = '#787878',
+	['scrollbar cursor active'] = '#969696',
+	['tab header'] = '#282828'
+}
+
+local color_names = {}
+
+for name,_ in pairs(colors) do
+	color_names[#color_names + 1] = name
+end
+
+table.sort(color_names)
+
+return function ()
+	nk.style_load_colors(colors)
+	nk.window_begin('Style', 400, 50, 350, 450, 'border', 'movable', 'title', 'scrollbar')
+		nk.layout_row('dynamic', 25, 2)
+		for _,name in ipairs(color_names) do
+			nk.label(name..':')
+			local color = colors[name]
+			if nk.combobox_begin(nil, color, 200, 200) then
+				nk.layout_row('dynamic', 90, 1)
+				color = nk.color_picker(color)
+				colors[name] = color
+				local r, g, b = nk.color_parse_rgba(color)
+				nk.layout_row('dynamic', 25, {.25, .75})
+				nk.label('R: '..r)
+				r = nk.slider(0, r, 255, 1)
+				nk.label('G: '..g)
+				g = nk.slider(0, g, 255, 1)
+				nk.label('B: '..b)
+				b = nk.slider(0, b, 255, 1)
+				colors[name] = nk.color_rgba(r, g, b)
+				nk.layout_row('dynamic', 0, 0) -- Work-around for nuklear issue #282
+				nk.combobox_end()
+			end
+		end
+	nk.window_end()
+end