From cd8e82c64e0ad7215a174f9acf84e4db66b6e693 Mon Sep 17 00:00:00 2001
From: gucio321 <gucio321@protonmail.com>
Date: Thu, 21 Oct 2021 18:37:24 +0200
Subject: [PATCH] FontAtlasProssesor: refactoring

- add FontAtlas type
- put font atlas in context
- make all FontAtlasProssesor functions a methods of FontAtlas
---
 Canvas.go                               |   2 +-
 ClickableWidgets.go                     |  14 ++--
 CodeEditor.go                           |   2 +-
 Context.go                              |   1 +
 ExtraWidgets.go                         |   6 +-
 FontAtlasProsessor.go                   | 107 ++++++++++++------------
 MasterWindow.go                         |  10 ++-
 Plot.go                                 |  18 ++--
 Popups.go                               |   4 +-
 ProgressIndicator.go                    |   2 +-
 SliderWidgets.go                        |  12 +--
 Style.go                                |   6 +-
 TableWidgets.go                         |   2 +-
 TextWidgets.go                          |  18 ++--
 Widgets.go                              |  24 +++---
 Window.go                               |   2 +-
 examples/multiplefonts/multiplefonts.go |   4 +-
 examples/pushfont/main.go               |   2 +-
 18 files changed, 121 insertions(+), 115 deletions(-)

diff --git a/Canvas.go b/Canvas.go
index 0870c17e..603df6f2 100644
--- a/Canvas.go
+++ b/Canvas.go
@@ -75,7 +75,7 @@ func (c *Canvas) AddRectFilled(pMin, pMax image.Point, col color.Color, rounding
 
 // AddText draws text.
 func (c *Canvas) AddText(pos image.Point, col color.Color, text string) {
-	c.drawlist.AddText(ToVec2(pos), ToVec4Color(col), tStr(text))
+	c.drawlist.AddText(ToVec2(pos), ToVec4Color(col), Context.FontAtlas.tStr(text))
 }
 
 // AddBezierCubic draws bezier cubic.
diff --git a/ClickableWidgets.go b/ClickableWidgets.go
index 8f586578..b2405c8e 100644
--- a/ClickableWidgets.go
+++ b/ClickableWidgets.go
@@ -27,7 +27,7 @@ func (b *ButtonWidget) Build() {
 		defer imgui.EndDisabled()
 	}
 
-	if imgui.ButtonV(tStr(b.id), imgui.Vec2{X: b.width, Y: b.height}) && b.onClick != nil {
+	if imgui.ButtonV(Context.FontAtlas.tStr(b.id), imgui.Vec2{X: b.width, Y: b.height}) && b.onClick != nil {
 		b.onClick()
 	}
 }
@@ -130,7 +130,7 @@ func SmallButtonf(format string, args ...interface{}) *SmallButtonWidget {
 
 // Build implements Widget interface.
 func (b *SmallButtonWidget) Build() {
-	if imgui.SmallButton(tStr(b.id)) && b.onClick != nil {
+	if imgui.SmallButton(Context.FontAtlas.tStr(b.id)) && b.onClick != nil {
 		b.onClick()
 	}
 }
@@ -170,7 +170,7 @@ func InvisibleButton() *InvisibleButtonWidget {
 
 // Build implements Widget interface.
 func (b *InvisibleButtonWidget) Build() {
-	if imgui.InvisibleButton(tStr(b.id), imgui.Vec2{X: b.width, Y: b.height}) && b.onClick != nil {
+	if imgui.InvisibleButton(Context.FontAtlas.tStr(b.id), imgui.Vec2{X: b.width, Y: b.height}) && b.onClick != nil {
 		b.onClick()
 	}
 }
@@ -325,7 +325,7 @@ type CheckboxWidget struct {
 
 // Build implements Widget interface.
 func (c *CheckboxWidget) Build() {
-	if imgui.Checkbox(tStr(c.text), c.selected) && c.onChange != nil {
+	if imgui.Checkbox(Context.FontAtlas.tStr(c.text), c.selected) && c.onChange != nil {
 		c.onChange()
 	}
 }
@@ -355,7 +355,7 @@ type RadioButtonWidget struct {
 
 // Build implements Widget interface.
 func (r *RadioButtonWidget) Build() {
-	if imgui.RadioButton(tStr(r.text), r.active) && r.onChange != nil {
+	if imgui.RadioButton(Context.FontAtlas.tStr(r.text), r.active) && r.onChange != nil {
 		r.onChange()
 	}
 }
@@ -434,7 +434,7 @@ func (s *SelectableWidget) Build() {
 		s.flags |= SelectableFlagsAllowDoubleClick
 	}
 
-	if imgui.SelectableV(tStr(s.label), s.selected, int(s.flags), imgui.Vec2{X: s.width, Y: s.height}) && s.onClick != nil {
+	if imgui.SelectableV(Context.FontAtlas.tStr(s.label), s.selected, int(s.flags), imgui.Vec2{X: s.width, Y: s.height}) && s.onClick != nil {
 		s.onClick()
 	}
 
@@ -454,7 +454,7 @@ type TreeNodeWidget struct {
 
 func TreeNode(label string) *TreeNodeWidget {
 	return &TreeNodeWidget{
-		label:        tStr(label),
+		label:        Context.FontAtlas.tStr(label),
 		flags:        0,
 		layout:       nil,
 		eventHandler: nil,
diff --git a/CodeEditor.go b/CodeEditor.go
index 366be398..442f843a 100644
--- a/CodeEditor.go
+++ b/CodeEditor.go
@@ -192,7 +192,7 @@ func (ce *CodeEditorWidget) Build() {
 	s := ce.getState()
 
 	// register text in font atlas
-	tStr(s.editor.GetText())
+	Context.FontAtlas.tStr(s.editor.GetText())
 
 	// build editor
 	s.editor.Render(ce.title, imgui.Vec2{X: ce.width, Y: ce.height}, ce.border)
diff --git a/Context.go b/Context.go
index 4ff53811..6498084c 100644
--- a/Context.go
+++ b/Context.go
@@ -31,6 +31,7 @@ type context struct {
 	state sync.Map
 
 	InputHandler InputHandler
+	FontAtlas    FontAtlas
 }
 
 func (c *context) GetRenderer() imgui.Renderer {
diff --git a/ExtraWidgets.go b/ExtraWidgets.go
index b97f3dfa..1f537796 100644
--- a/ExtraWidgets.go
+++ b/ExtraWidgets.go
@@ -194,10 +194,10 @@ func (ttr *TreeTableRowWidget) Build() {
 
 	open := false
 	if len(ttr.children) > 0 {
-		open = imgui.TreeNodeV(tStr(ttr.label), int(ttr.flags))
+		open = imgui.TreeNodeV(Context.FontAtlas.tStr(ttr.label), int(ttr.flags))
 	} else {
 		ttr.flags |= TreeNodeFlagsLeaf | TreeNodeFlagsNoTreePushOnOpen
-		imgui.TreeNodeV(tStr(ttr.label), int(ttr.flags))
+		imgui.TreeNodeV(Context.FontAtlas.tStr(ttr.label), int(ttr.flags))
 	}
 
 	for _, w := range ttr.layout {
@@ -544,7 +544,7 @@ func (d *DatePickerWidget) Build() {
 		const yearButtonSize = 25
 
 		Row(
-			Label(tStr(" Year")),
+			Label(Context.FontAtlas.tStr(" Year")),
 			Labelf("%14d", d.date.Year()),
 			Button("-##"+d.id+"year").OnClick(func() {
 				*d.date = d.date.AddDate(-1, 0, 0)
diff --git a/FontAtlasProsessor.go b/FontAtlasProsessor.go
index 85f99982..7aeb722a 100644
--- a/FontAtlasProsessor.go
+++ b/FontAtlasProsessor.go
@@ -11,14 +11,6 @@ import (
 	"github.com/AllenDang/imgui-go"
 )
 
-var (
-	shouldRebuildFontAtlas bool
-	stringMap              sync.Map // key is rune, value indicates whether it's a new rune.
-	defaultFonts           []FontInfo
-	extraFonts             []FontInfo
-	extraFontMap           map[string]*imgui.Font
-)
-
 const (
 	preRegisterString = " \"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
 	windows           = "windows"
@@ -36,36 +28,45 @@ func (f *FontInfo) String() string {
 	return fmt.Sprintf("%s:%.2f", f.fontName, f.size)
 }
 
-func init() {
-	extraFontMap = make(map[string]*imgui.Font)
+type FontAtlas struct {
+	shouldRebuildFontAtlas bool
+	stringMap              sync.Map // key is rune, value indicates whether it's a new rune.
+	defaultFonts           []FontInfo
+	extraFonts             []FontInfo
+	extraFontMap           map[string]*imgui.Font
+}
+
+func newFontAtlas() FontAtlas {
+	result := FontAtlas{
+		extraFontMap: make(map[string]*imgui.Font),
+	}
 
 	// Pre register numbers
-	tStr(preRegisterString)
+	result.tStr(preRegisterString)
 
 	// Pre-register fonts
-	os := runtime.GOOS
-	switch os {
+	switch runtime.GOOS {
 	case "darwin":
 		// English font
-		registerDefaultFont("Menlo", 14)
+		result.registerDefaultFont("Menlo", 14)
 		// Chinese font
-		registerDefaultFont("STHeiti", 13)
+		result.registerDefaultFont("STHeiti", 13)
 		// Jananese font
-		registerDefaultFont("ヒラギノ角ゴシック W0", 17)
+		result.registerDefaultFont("ヒラギノ角ゴシック W0", 17)
 		// Korean font
-		registerDefaultFont("AppleSDGothicNeo", 16)
+		result.registerDefaultFont("AppleSDGothicNeo", 16)
 	case windows:
 		// English font
-		registerDefaultFont("Calibri", 16)
+		result.registerDefaultFont("Calibri", 16)
 		// Chinese font
-		registerDefaultFont("MSYH", 16)
+		result.registerDefaultFont("MSYH", 16)
 		// Japanese font
-		registerDefaultFont("MSGOTHIC", 16)
+		result.registerDefaultFont("MSGOTHIC", 16)
 		// Korean font
-		registerDefaultFont("MALGUNSL", 16)
+		result.registerDefaultFont("MALGUNSL", 16)
 	case "linux":
 		// English fonts
-		registerDefaultFonts([]FontInfo{
+		result.registerDefaultFonts([]FontInfo{
 			{
 				fontName: "FreeSans.ttf",
 				size:     15,
@@ -76,10 +77,12 @@ func init() {
 			},
 		})
 	}
+
+	return result
 }
 
 // SetDefaultFont changes default font.
-func SetDefaultFont(fontName string, size float32) {
+func (a *FontAtlas) SetDefaultFont(fontName string, size float32) {
 	fontPath, err := findfont.Find(fontName)
 	if err != nil {
 		log.Fatalf("Cannot find font %s", fontName)
@@ -87,22 +90,22 @@ func SetDefaultFont(fontName string, size float32) {
 	}
 
 	fontInfo := FontInfo{fontName: fontName, fontPath: fontPath, size: size}
-	defaultFonts = append([]FontInfo{fontInfo}, defaultFonts...)
+	a.defaultFonts = append([]FontInfo{fontInfo}, a.defaultFonts...)
 }
 
 // SetDefaultFontFromBytes changes default font by bytes of the font file.
-func SetDefaultFontFromBytes(fontBytes []byte, size float32) {
-	defaultFonts = append([]FontInfo{
+func (a *FontAtlas) SetDefaultFontFromBytes(fontBytes []byte, size float32) {
+	a.defaultFonts = append([]FontInfo{
 		{
 			fontByte: fontBytes,
 			size:     size,
 		},
-	}, defaultFonts...)
+	}, a.defaultFonts...)
 }
 
 // AddFont adds font by name, if the font is found, return *FontInfo, otherwise return nil.
 // To use added font, use giu.Style().SetFont(...).
-func AddFont(fontName string, size float32) *FontInfo {
+func (a *FontAtlas) AddFont(fontName string, size float32) *FontInfo {
 	fontPath, err := findfont.Find(fontName)
 	if err != nil {
 		fmt.Printf("[Warning]Cannot find font %s at system, related text will not be rendered.\n", fontName)
@@ -115,35 +118,35 @@ func AddFont(fontName string, size float32) *FontInfo {
 		size:     size,
 	}
 
-	extraFonts = append(extraFonts, fi)
+	a.extraFonts = append(a.extraFonts, fi)
 
 	return &fi
 }
 
 // AddFontFromBytes does similar to AddFont, but using data from memory.
-func AddFontFromBytes(fontName string, fontBytes []byte, size float32) *FontInfo {
+func (a *FontAtlas) AddFontFromBytes(fontName string, fontBytes []byte, size float32) *FontInfo {
 	fi := FontInfo{
 		fontName: fontName,
 		fontByte: fontBytes,
 		size:     size,
 	}
 
-	extraFonts = append(extraFonts, fi)
+	a.extraFonts = append(a.extraFonts, fi)
 
 	return &fi
 }
 
-func registerDefaultFont(fontName string, size float32) {
+func (a *FontAtlas) registerDefaultFont(fontName string, size float32) {
 	fontPath, err := findfont.Find(fontName)
 	if err != nil {
 		return
 	}
 
 	fontInfo := FontInfo{fontName: fontName, fontPath: fontPath, size: size}
-	defaultFonts = append(defaultFonts, fontInfo)
+	a.defaultFonts = append(a.defaultFonts, fontInfo)
 }
 
-func registerDefaultFonts(fontInfos []FontInfo) {
+func (a *FontAtlas) registerDefaultFonts(fontInfos []FontInfo) {
 	var firstFoundFont *FontInfo
 	for _, fi := range fontInfos {
 		fontPath, err := findfont.Find(fi.fontName)
@@ -154,17 +157,17 @@ func registerDefaultFonts(fontInfos []FontInfo) {
 	}
 
 	if firstFoundFont != nil {
-		defaultFonts = append(defaultFonts, *firstFoundFont)
+		a.defaultFonts = append(a.defaultFonts, *firstFoundFont)
 	}
 }
 
 // Register string to font atlas builder.
 // Note only register strings that will be displayed on the UI.
-func tStr(str string) string {
+func (a *FontAtlas) tStr(str string) string {
 	for _, s := range str {
-		if _, ok := stringMap.Load(s); !ok {
-			stringMap.Store(s, false)
-			shouldRebuildFontAtlas = true
+		if _, ok := a.stringMap.Load(s); !ok {
+			a.stringMap.Store(s, false)
+			a.shouldRebuildFontAtlas = true
 		}
 	}
 
@@ -173,22 +176,22 @@ func tStr(str string) string {
 
 // Register string pointer to font atlas builder.
 // Note only register strings that will be displayed on the UI.
-func tStrPtr(str *string) *string {
-	tStr(*str)
+func (a *FontAtlas) tStrPtr(str *string) *string {
+	a.tStr(*str)
 	return str
 }
 
-func tStrSlice(str []string) []string {
+func (a *FontAtlas) tStrSlice(str []string) []string {
 	for _, s := range str {
-		tStr(s)
+		a.tStr(s)
 	}
 
 	return str
 }
 
 // Rebuild font atlas when necessary.
-func rebuildFontAtlas() {
-	if !shouldRebuildFontAtlas {
+func (a *FontAtlas) rebuildFontAtlas() {
+	if !a.shouldRebuildFontAtlas {
 		return
 	}
 
@@ -197,8 +200,8 @@ func rebuildFontAtlas() {
 
 	var sb strings.Builder
 
-	stringMap.Range(func(k, v interface{}) bool {
-		stringMap.Store(k, true)
+	a.stringMap.Range(func(k, v interface{}) bool {
+		a.stringMap.Store(k, true)
 		if ks, ok := k.(rune); ok {
 			sb.WriteRune(ks)
 		}
@@ -218,13 +221,13 @@ func rebuildFontAtlas() {
 
 	builder.BuildRanges(ranges)
 
-	if len(defaultFonts) > 0 {
+	if len(a.defaultFonts) > 0 {
 		fontConfig := imgui.NewFontConfig()
 		fontConfig.SetOversampleH(2)
 		fontConfig.SetOversampleV(2)
 		fontConfig.SetRasterizerMultiply(1.5)
 
-		for i, fontInfo := range defaultFonts {
+		for i, fontInfo := range a.defaultFonts {
 			if i > 0 {
 				fontConfig.SetMergeMode(true)
 			}
@@ -250,7 +253,7 @@ func rebuildFontAtlas() {
 	}
 
 	// Add extra fonts
-	for _, fontInfo := range extraFonts {
+	for _, fontInfo := range a.extraFonts {
 		// Scale font size with DPI scale factor
 		if runtime.GOOS == windows {
 			fontInfo.size *= Context.GetPlatform().GetContentScale()
@@ -263,11 +266,11 @@ func rebuildFontAtlas() {
 		} else {
 			f = fonts.AddFontFromMemoryTTFV(fontInfo.fontByte, fontInfo.size, imgui.DefaultFontConfig, ranges.Data())
 		}
-		extraFontMap[fontInfo.String()] = &f
+		a.extraFontMap[fontInfo.String()] = &f
 	}
 
 	fontTextureImg := fonts.TextureDataRGBA32()
 	Context.renderer.SetFontTexture(fontTextureImg)
 
-	shouldRebuildFontAtlas = false
+	a.shouldRebuildFontAtlas = false
 }
diff --git a/MasterWindow.go b/MasterWindow.go
index 280da5ae..5dd9d0c1 100644
--- a/MasterWindow.go
+++ b/MasterWindow.go
@@ -75,14 +75,16 @@ func NewMasterWindow(title string, width, height int, flags MasterWindowFlags) *
 	// Create context
 	Context.renderer = r
 
+	Context.FontAtlas = newFontAtlas()
+
 	// Create font
-	if len(defaultFonts) == 0 {
+	if len(Context.FontAtlas.defaultFonts) == 0 {
 		io.Fonts().AddFontDefault()
 		fontAtlas := io.Fonts().TextureDataRGBA32()
 		r.SetFontTexture(fontAtlas)
 	} else {
-		shouldRebuildFontAtlas = true
-		rebuildFontAtlas()
+		Context.FontAtlas.shouldRebuildFontAtlas = true
+		Context.FontAtlas.rebuildFontAtlas()
 	}
 
 	mw := &MasterWindow{
@@ -189,7 +191,7 @@ func (w *MasterWindow) sizeChange(width, height int) {
 func (w *MasterWindow) render() {
 	Context.invalidAllState()
 
-	rebuildFontAtlas()
+	Context.FontAtlas.rebuildFontAtlas()
 
 	p := w.platform
 	r := w.renderer
diff --git a/Plot.go b/Plot.go
index 67922266..9cffd484 100644
--- a/Plot.go
+++ b/Plot.go
@@ -176,11 +176,11 @@ func (p *PlotCanvasWidget) Build() {
 		}
 
 		if imgui.ImPlotBegin(
-			tStr(p.title), tStr(p.xLabel),
-			tStr(p.yLabel), ToVec2(image.Pt(p.width, p.height)),
+			Context.FontAtlas.tStr(p.title), Context.FontAtlas.tStr(p.xLabel),
+			Context.FontAtlas.tStr(p.yLabel), ToVec2(image.Pt(p.width, p.height)),
 			imgui.ImPlotFlags(p.flags), imgui.ImPlotAxisFlags(p.xFlags),
 			imgui.ImPlotAxisFlags(p.yFlags), imgui.ImPlotAxisFlags(p.y2Flags),
-			imgui.ImPlotAxisFlags(p.y3Flags), tStr(p.y2Label), tStr(p.y3Label),
+			imgui.ImPlotAxisFlags(p.y3Flags), Context.FontAtlas.tStr(p.y2Label), Context.FontAtlas.tStr(p.y3Label),
 		) {
 			for _, plot := range p.plots {
 				plot.Plot()
@@ -273,7 +273,7 @@ func (p *PlotBarHWidget) Offset(offset int) *PlotBarHWidget {
 
 // Plot implements plot interface.
 func (p *PlotBarHWidget) Plot() {
-	imgui.ImPlotBarsH(tStr(p.title), p.data, p.height, p.shift, p.offset)
+	imgui.ImPlotBarsH(Context.FontAtlas.tStr(p.title), p.data, p.height, p.shift, p.offset)
 }
 
 // PlotLineWidget represents a plot line (linear chart).
@@ -323,7 +323,7 @@ func (p *PlotLineWidget) Offset(offset int) *PlotLineWidget {
 // Plot implements Plot interface.
 func (p *PlotLineWidget) Plot() {
 	imgui.ImPlotSetPlotYAxis(imgui.ImPlotYAxis(p.yAxis))
-	imgui.ImPlotLine(tStr(p.title), p.values, p.xScale, p.x0, p.offset)
+	imgui.ImPlotLine(Context.FontAtlas.tStr(p.title), p.values, p.xScale, p.x0, p.offset)
 }
 
 // PlotLineXYWidget adds XY plot line.
@@ -359,7 +359,7 @@ func (p *PlotLineXYWidget) Offset(offset int) *PlotLineXYWidget {
 // Plot implements Plot interface.
 func (p *PlotLineXYWidget) Plot() {
 	imgui.ImPlotSetPlotYAxis(imgui.ImPlotYAxis(p.yAxis))
-	imgui.ImPlotLineXY(tStr(p.title), p.xs, p.ys, p.offset)
+	imgui.ImPlotLineXY(Context.FontAtlas.tStr(p.title), p.xs, p.ys, p.offset)
 }
 
 // PlotPieChartWidget represents a pie chart.
@@ -403,7 +403,7 @@ func (p *PlotPieChartWidget) Angle0(a float64) *PlotPieChartWidget {
 }
 
 func (p *PlotPieChartWidget) Plot() {
-	imgui.ImPlotPieChart(tStrSlice(p.labels), p.values, p.x, p.y, p.radius, p.normalize, p.labelFormat, p.angle0)
+	imgui.ImPlotPieChart(Context.FontAtlas.tStrSlice(p.labels), p.values, p.x, p.y, p.radius, p.normalize, p.labelFormat, p.angle0)
 }
 
 type PlotScatterWidget struct {
@@ -439,7 +439,7 @@ func (p *PlotScatterWidget) Offset(offset int) *PlotScatterWidget {
 }
 
 func (p *PlotScatterWidget) Plot() {
-	imgui.ImPlotScatter(tStr(p.label), p.values, p.xscale, p.x0, p.offset)
+	imgui.ImPlotScatter(Context.FontAtlas.tStr(p.label), p.values, p.xscale, p.x0, p.offset)
 }
 
 type PlotScatterXYWidget struct {
@@ -463,5 +463,5 @@ func (p *PlotScatterXYWidget) Offset(offset int) *PlotScatterXYWidget {
 }
 
 func (p *PlotScatterXYWidget) Plot() {
-	imgui.ImPlotScatterXY(tStr(p.label), p.xs, p.ys, p.offset)
+	imgui.ImPlotScatterXY(Context.FontAtlas.tStr(p.label), p.xs, p.ys, p.offset)
 }
diff --git a/Popups.go b/Popups.go
index fadfd1aa..d2a85e22 100644
--- a/Popups.go
+++ b/Popups.go
@@ -22,7 +22,7 @@ type PopupWidget struct {
 
 func Popup(name string) *PopupWidget {
 	return &PopupWidget{
-		name:   tStr(name),
+		name:   Context.FontAtlas.tStr(name),
 		flags:  0,
 		layout: nil,
 	}
@@ -57,7 +57,7 @@ type PopupModalWidget struct {
 
 func PopupModal(name string) *PopupModalWidget {
 	return &PopupModalWidget{
-		name:   tStr(name),
+		name:   Context.FontAtlas.tStr(name),
 		open:   nil,
 		flags:  WindowFlagsNoResize,
 		layout: nil,
diff --git a/ProgressIndicator.go b/ProgressIndicator.go
index 009005b2..db9b63d5 100644
--- a/ProgressIndicator.go
+++ b/ProgressIndicator.go
@@ -95,7 +95,7 @@ func (p *ProgressIndicatorWidget) Build() {
 
 				// Draw text
 				if len(p.label) > 0 {
-					labelWidth, _ := CalcTextSize(tStr(p.label))
+					labelWidth, _ := CalcTextSize(Context.FontAtlas.tStr(p.label))
 					labelPos := centerPt.Add(image.Pt(-1*int(labelWidth/2), int(p.radius+p.radius/5+8)))
 					canvas.AddText(labelPos, rgba, p.label)
 				}
diff --git a/SliderWidgets.go b/SliderWidgets.go
index d07f72ff..c070a3dc 100644
--- a/SliderWidgets.go
+++ b/SliderWidgets.go
@@ -47,7 +47,7 @@ func (s *SliderIntWidget) OnChange(onChange func()) *SliderIntWidget {
 }
 
 func (s *SliderIntWidget) Label(label string) *SliderIntWidget {
-	s.label = tStr(label)
+	s.label = Context.FontAtlas.tStr(label)
 	return s
 }
 
@@ -62,7 +62,7 @@ func (s *SliderIntWidget) Build() {
 		defer PopItemWidth()
 	}
 
-	if imgui.SliderIntV(tStr(s.label), s.value, s.min, s.max, s.format) && s.onChange != nil {
+	if imgui.SliderIntV(Context.FontAtlas.tStr(s.label), s.value, s.min, s.max, s.format) && s.onChange != nil {
 		s.onChange()
 	}
 }
@@ -115,7 +115,7 @@ func (vs *VSliderIntWidget) OnChange(onChange func()) *VSliderIntWidget {
 }
 
 func (vs *VSliderIntWidget) Label(label string) *VSliderIntWidget {
-	vs.label = tStr(label)
+	vs.label = Context.FontAtlas.tStr(label)
 	return vs
 }
 
@@ -126,7 +126,7 @@ func (vs *VSliderIntWidget) Labelf(format string, args ...interface{}) *VSliderI
 // Build implements Widget interface.
 func (vs *VSliderIntWidget) Build() {
 	if imgui.VSliderIntV(
-		tStr(vs.label),
+		Context.FontAtlas.tStr(vs.label),
 		imgui.Vec2{X: vs.width, Y: vs.height},
 		vs.value,
 		vs.min,
@@ -179,7 +179,7 @@ func (sf *SliderFloatWidget) Size(width float32) *SliderFloatWidget {
 }
 
 func (sf *SliderFloatWidget) Label(label string) *SliderFloatWidget {
-	sf.label = tStr(label)
+	sf.label = Context.FontAtlas.tStr(label)
 	return sf
 }
 
@@ -194,7 +194,7 @@ func (sf *SliderFloatWidget) Build() {
 		defer PopItemWidth()
 	}
 
-	if imgui.SliderFloatV(tStr(sf.label), sf.value, sf.min, sf.max, sf.format, 1.0) && sf.onChange != nil {
+	if imgui.SliderFloatV(Context.FontAtlas.tStr(sf.label), sf.value, sf.min, sf.max, sf.format, 1.0) && sf.onChange != nil {
 		sf.onChange()
 	}
 }
diff --git a/Style.go b/Style.go
index 381f237c..e0681cf1 100644
--- a/Style.go
+++ b/Style.go
@@ -14,7 +14,7 @@ func PushFont(font *FontInfo) bool {
 		return false
 	}
 
-	if f, ok := extraFontMap[font.String()]; ok {
+	if f, ok := Context.FontAtlas.extraFontMap[font.String()]; ok {
 		imgui.PushFont(*f)
 		return true
 	}
@@ -397,12 +397,12 @@ func (ss *StyleSetter) SetFontSize(size float32) *StyleSetter {
 	if ss.font != nil {
 		font = *ss.font
 	} else {
-		font = defaultFonts[0]
+		font = Context.FontAtlas.defaultFonts[0]
 	}
 
 	font.size = size
 
-	extraFonts = append(extraFonts, font)
+	Context.FontAtlas.extraFonts = append(Context.FontAtlas.extraFonts, font)
 
 	ss.font = &font
 
diff --git a/TableWidgets.go b/TableWidgets.go
index 338bb56f..b76cfa3c 100644
--- a/TableWidgets.go
+++ b/TableWidgets.go
@@ -71,7 +71,7 @@ type TableColumnWidget struct {
 
 func TableColumn(label string) *TableColumnWidget {
 	return &TableColumnWidget{
-		label:              tStr(label),
+		label:              Context.FontAtlas.tStr(label),
 		flags:              0,
 		innerWidthOrWeight: 0,
 		userID:             0,
diff --git a/TextWidgets.go b/TextWidgets.go
index 1db4a483..bbd04b73 100644
--- a/TextWidgets.go
+++ b/TextWidgets.go
@@ -48,8 +48,8 @@ func (i *InputTextMultilineWidget) Labelf(format string, args ...interface{}) *I
 // Build implements Widget interface.
 func (i *InputTextMultilineWidget) Build() {
 	if imgui.InputTextMultilineV(
-		tStr(i.label),
-		tStrPtr(i.text),
+		Context.FontAtlas.tStr(i.label),
+		Context.FontAtlas.tStrPtr(i.text),
 		imgui.Vec2{
 			X: i.width,
 			Y: i.height,
@@ -111,7 +111,7 @@ type BulletTextWidget struct {
 // BulletText creates bulletTextWidget.
 func BulletText(text string) *BulletTextWidget {
 	return &BulletTextWidget{
-		text: tStr(text),
+		text: Context.FontAtlas.tStr(text),
 	}
 }
 
@@ -159,7 +159,7 @@ func InputText(value *string) *InputTextWidget {
 }
 
 func (i *InputTextWidget) Label(label string) *InputTextWidget {
-	i.label = tStr(label)
+	i.label = Context.FontAtlas.tStr(label)
 	return i
 }
 
@@ -175,7 +175,7 @@ func (i *InputTextWidget) AutoComplete(candidates []string) *InputTextWidget {
 }
 
 func (i *InputTextWidget) Hint(hint string) *InputTextWidget {
-	i.hint = tStr(hint)
+	i.hint = Context.FontAtlas.tStr(hint)
 	return i
 }
 
@@ -217,7 +217,7 @@ func (i *InputTextWidget) Build() {
 		defer PopItemWidth()
 	}
 
-	isChanged := imgui.InputTextWithHint(i.label, i.hint, tStrPtr(i.value), int(i.flags), i.cb)
+	isChanged := imgui.InputTextWithHint(i.label, i.hint, Context.FontAtlas.tStrPtr(i.value), int(i.flags), i.cb)
 
 	if isChanged && i.onChange != nil {
 		i.onChange()
@@ -277,7 +277,7 @@ func InputInt(value *int32) *InputIntWidget {
 }
 
 func (i *InputIntWidget) Label(label string) *InputIntWidget {
-	i.label = tStr(label)
+	i.label = Context.FontAtlas.tStr(label)
 	return i
 }
 
@@ -335,7 +335,7 @@ func InputFloat(value *float32) *InputFloatWidget {
 }
 
 func (i *InputFloatWidget) Label(label string) *InputFloatWidget {
-	i.label = tStr(label)
+	i.label = Context.FontAtlas.tStr(label)
 	return i
 }
 
@@ -385,7 +385,7 @@ type LabelWidget struct {
 
 func Label(label string) *LabelWidget {
 	return &LabelWidget{
-		label:   tStr(label),
+		label:   Context.FontAtlas.tStr(label),
 		wrapped: false,
 	}
 }
diff --git a/Widgets.go b/Widgets.go
index 8c8f5600..47a6d143 100644
--- a/Widgets.go
+++ b/Widgets.go
@@ -124,7 +124,7 @@ type ComboCustomWidget struct {
 func ComboCustom(label, previewValue string) *ComboCustomWidget {
 	return &ComboCustomWidget{
 		label:        GenAutoID(label),
-		previewValue: tStr(previewValue),
+		previewValue: Context.FontAtlas.tStr(previewValue),
 		width:        0,
 		flags:        0,
 		layout:       nil,
@@ -156,7 +156,7 @@ func (cc *ComboCustomWidget) Build() {
 		defer imgui.PopItemWidth()
 	}
 
-	if imgui.BeginComboV(tStr(cc.label), cc.previewValue, int(cc.flags)) {
+	if imgui.BeginComboV(Context.FontAtlas.tStr(cc.label), cc.previewValue, int(cc.flags)) {
 		cc.layout.Build()
 		imgui.EndCombo()
 	}
@@ -180,8 +180,8 @@ type ComboWidget struct {
 func Combo(label, previewValue string, items []string, selected *int32) *ComboWidget {
 	return &ComboWidget{
 		label:        GenAutoID(label),
-		previewValue: tStr(previewValue),
-		items:        tStrSlice(items),
+		previewValue: Context.FontAtlas.tStr(previewValue),
+		items:        Context.FontAtlas.tStrSlice(items),
 		selected:     selected,
 		flags:        0,
 		width:        0,
@@ -196,7 +196,7 @@ func (c *ComboWidget) Build() {
 		defer imgui.PopItemWidth()
 	}
 
-	if imgui.BeginComboV(tStr(c.label), c.previewValue, int(c.flags)) {
+	if imgui.BeginComboV(Context.FontAtlas.tStr(c.label), c.previewValue, int(c.flags)) {
 		for i, item := range c.items {
 			if imgui.Selectable(item) {
 				*c.selected = int32(i)
@@ -301,7 +301,7 @@ func (d *DragIntWidget) Format(format string) *DragIntWidget {
 
 // Build implements Widget interface.
 func (d *DragIntWidget) Build() {
-	imgui.DragIntV(tStr(d.label), d.value, d.speed, d.min, d.max, d.format)
+	imgui.DragIntV(Context.FontAtlas.tStr(d.label), d.value, d.speed, d.min, d.max, d.format)
 }
 
 var _ Widget = &ColumnWidget{}
@@ -416,7 +416,7 @@ func (m *MenuItemWidget) OnClick(onClick func()) *MenuItemWidget {
 
 // Build implements Widget interface.
 func (m *MenuItemWidget) Build() {
-	if imgui.MenuItemV(tStr(m.label), "", m.selected, m.enabled) && m.onClick != nil {
+	if imgui.MenuItemV(Context.FontAtlas.tStr(m.label), "", m.selected, m.enabled) && m.onClick != nil {
 		m.onClick()
 	}
 }
@@ -453,7 +453,7 @@ func (m *MenuWidget) Layout(widgets ...Widget) *MenuWidget {
 
 // Build implements Widget interface.
 func (m *MenuWidget) Build() {
-	if imgui.BeginMenuV(tStr(m.label), m.enabled) {
+	if imgui.BeginMenuV(Context.FontAtlas.tStr(m.label), m.enabled) {
 		m.layout.Build()
 		imgui.EndMenu()
 	}
@@ -483,7 +483,7 @@ func (p *ProgressBarWidget) Size(width, height float32) *ProgressBarWidget {
 }
 
 func (p *ProgressBarWidget) Overlay(overlay string) *ProgressBarWidget {
-	p.overlay = tStr(overlay)
+	p.overlay = Context.FontAtlas.tStr(overlay)
 	return p
 }
 
@@ -549,7 +549,7 @@ type TabItemWidget struct {
 
 func TabItem(label string) *TabItemWidget {
 	return &TabItemWidget{
-		label:  tStr(label),
+		label:  Context.FontAtlas.tStr(label),
 		open:   nil,
 		flags:  0,
 		layout: nil,
@@ -645,7 +645,7 @@ func (t *TooltipWidget) Build() {
 
 func Tooltip(tip string) *TooltipWidget {
 	return &TooltipWidget{
-		tip:    tStr(tip),
+		tip:    Context.FontAtlas.tStr(tip),
 		layout: nil,
 	}
 }
@@ -720,7 +720,7 @@ func (ce *ColorEditWidget) Build() {
 	}
 
 	if imgui.ColorEdit4V(
-		tStr(ce.label),
+		Context.FontAtlas.tStr(ce.label),
 		&col,
 		int(ce.flags),
 	) {
diff --git a/Window.go b/Window.go
index 5a343c8d..bcff573e 100644
--- a/Window.go
+++ b/Window.go
@@ -133,7 +133,7 @@ func (w *WindowWidget) Layout(widgets ...Widget) {
 		}),
 	)
 
-	showed := imgui.BeginV(tStr(w.title), w.open, int(w.flags))
+	showed := imgui.BeginV(Context.FontAtlas.tStr(w.title), w.open, int(w.flags))
 
 	if showed {
 		Layout(widgets).Build()
diff --git a/examples/multiplefonts/multiplefonts.go b/examples/multiplefonts/multiplefonts.go
index 391aa66c..b2566027 100644
--- a/examples/multiplefonts/multiplefonts.go
+++ b/examples/multiplefonts/multiplefonts.go
@@ -33,10 +33,10 @@ func loop() {
 
 func main() {
 	// Change the default font
-	g.SetDefaultFont("Arial.ttf", 12)
+	g.Context.FontAtlas.SetDefaultFont("Arial.ttf", 12)
 
 	// Add a new font and manually set it when needed
-	bigFont = g.AddFont("Menlo.ttc", 24)
+	bigFont = g.Context.FontAtlas.AddFont("Menlo.ttc", 24)
 
 	wnd := g.NewMasterWindow("Multiple fonts", 600, 400, g.MasterWindowFlagsNotResizable)
 	wnd.Run(loop)
diff --git a/examples/pushfont/main.go b/examples/pushfont/main.go
index 1c136d81..b7ecd85a 100644
--- a/examples/pushfont/main.go
+++ b/examples/pushfont/main.go
@@ -25,7 +25,7 @@ func loop() {
 
 func main() {
 	wnd := giu.NewMasterWindow("example", 640, 480, 0)
-	font = giu.AddFont("NotoSansSinhala-Regular.ttf", 20)
+	font = giu.Context.FontAtlas.AddFont("NotoSansSinhala-Regular.ttf", 20)
 	fmt.Println(font)
 	wnd.Run(loop)
 }