Linting fixes

.golangci.yml

@@ -21,7 +21,7 @@ linters:
     - gocyclo
     - err113
     - gofmt
-    #- gofumpt
+    - gofumpt
     - goheader
     - goimports
     #- gomnd
@@ -39,14 +39,18 @@ linters:
     - prealloc
     - predeclared
     - promlinter
+    - reassign
     #- revive
     - rowserrcheck
     - staticcheck
     - stylecheck
+    - tagliatelle
+    - testifylint
     - typecheck
     - unconvert
     - unparam
     - unused
+    - usestdlibvars
     - wastedassign
     - whitespace
     - wrapcheck
@@ -81,6 +85,7 @@ run:
   timeout: 5m
 
 issues:
+  exclude-dirs-use-default: false
   skip-dirs:
     - .github
     - build

CSS.go

@@ -99,7 +99,6 @@ func ParseCSSStyleSheet(data []byte) error {
 			err = panicToErr(func() {
 				styleColorID = StyleColorIDFromString(styleVarName)
 			})
-
 			if err != nil {
 				return ErrCSSParse{What: "style variable ID", Value: styleVarName}
 			}

Context.go

@@ -66,6 +66,7 @@ type context struct {
 	m *sync.Mutex
 }
 
+// CreateContext creates a new giu context.
 func CreateContext(b backend.Backend[glfwbackend.GLFWWindowFlags]) *context {
 	result := context{
 		cssStylesheet:       make(cssStylesheet),
@@ -91,10 +92,13 @@ func CreateContext(b backend.Backend[glfwbackend.GLFWWindowFlags]) *context {
 	return &result
 }
 
+// IO returns the imgui.IO object.
 func (c *context) IO() *imgui.IO {
 	return imgui.CurrentIO()
 }
 
+// invalidAllState should be called before rendering.
+// it ensures all states are marked as invalid for that moment.
 func (c *context) invalidAllState() {
 	c.state.Range(func(k, v any) bool {
 		if s, ok := v.(*state); ok {
@@ -107,6 +111,8 @@ func (c *context) invalidAllState() {
 	})
 }
 
+// cleanState removes all states that were not marked as valid during rendering.
+// should be called after rendering.
 func (c *context) cleanState() {
 	c.state.Range(func(k, v any) bool {
 		if s, ok := v.(*state); ok {
@@ -127,18 +133,22 @@ func (c *context) cleanState() {
 	c.widgetIndex = make(map[string]int)
 }
 
+// Backend returns the imgui.backend used by the context.
 func (c *context) Backend() backend.Backend[glfwbackend.GLFWWindowFlags] {
 	return c.backend
 }
 
+// SetState is a generic version of Context.SetState.
 func SetState[T any, PT genericDisposable[T]](c *context, id string, data PT) {
 	c.state.Store(id, &state{valid: true, data: data})
 }
 
+// SetState stores data in context by id.
 func (c *context) SetState(id string, data Disposable) {
 	c.state.Store(id, &state{valid: true, data: data})
 }
 
+// GetState is a generic version of Context.GetState.
 func GetState[T any, PT genericDisposable[T]](c *context, id string) PT {
 	if s, ok := c.load(id); ok {
 		c.m.Lock()
@@ -154,6 +164,7 @@ func GetState[T any, PT genericDisposable[T]](c *context, id string) PT {
 	return nil
 }
 
+// GetState returns previously stored state by id.
 func (c *context) GetState(id string) any {
 	if s, ok := c.load(id); ok {
 		c.m.Lock()

ImageWidgets.go

@@ -350,7 +350,7 @@ func (i *ImageWithURLWidget) Build() {
 			// Load image from url
 			client := &http.Client{Timeout: i.downloadTimeout}
 
-			req, err := http.NewRequestWithContext(downloadContext, "GET", i.imgURL, http.NoBody)
+			req, err := http.NewRequestWithContext(downloadContext, http.MethodGet, i.imgURL, http.NoBody)
 			if err != nil {
 				errorFn(err)
 				return

MasterWindow.go

@@ -394,7 +394,7 @@ func (w *MasterWindow) SetShouldClose(v bool) {
 func (w *MasterWindow) SetInputHandler(handler InputHandler) {
 	Context.InputHandler = handler
 
-	w.backend.SetKeyCallback(func(key, scanCode, action, modifier int) {
+	w.backend.SetKeyCallback(func(key, _, action, modifier int) {
 		k, m, a := keyFromGLFWKey(glfwbackend.GLFWKey(key)), Modifier(modifier), Action(action)
 		handler.Handle(k, m, a)
 

TableWidgets.go

@@ -6,13 +6,17 @@ import (
 	"github.com/AllenDang/cimgui-go/imgui"
 )
 
+// TableRowWidget represents a row in a table.
 type TableRowWidget struct {
 	flags        TableRowFlags
 	minRowHeight float64
 	layout       Layout
 	bgColor      color.Color
 }
 
+// TableRow creates a TbleRowWidget.
+// Each widget will be rendered in a separated column.
+// NOTE: if you want to put multiple widgets in one cell, enclose them in Layout{}.
 func TableRow(widgets ...Widget) *TableRowWidget {
 	return &TableRowWidget{
 		flags:        0,
@@ -22,16 +26,19 @@ func TableRow(widgets ...Widget) *TableRowWidget {
 	}
 }
 
+// BgColor sets the background color of the row.
 func (r *TableRowWidget) BgColor(c color.Color) *TableRowWidget {
 	r.bgColor = c
 	return r
 }
 
+// Flags sets the flags of the row.
 func (r *TableRowWidget) Flags(flags TableRowFlags) *TableRowWidget {
 	r.flags = flags
 	return r
 }
 
+// MinHeight sets the minimum height of the row.
 func (r *TableRowWidget) MinHeight(height float64) *TableRowWidget {
 	r.minRowHeight = height
 	return r
@@ -58,13 +65,15 @@ func (r *TableRowWidget) BuildTableRow() {
 	}
 }
 
+// TableColumnWidget allows to configure table columns headers.
 type TableColumnWidget struct {
 	label              string
 	flags              TableColumnFlags
 	innerWidthOrWeight float32
 	userID             uint32
 }
 
+// TableColumn creates a new TableColumnWidget.
 func TableColumn(label string) *TableColumnWidget {
 	return &TableColumnWidget{
 		label:              Context.FontAtlas.RegisterString(label),
@@ -74,16 +83,19 @@ func TableColumn(label string) *TableColumnWidget {
 	}
 }
 
+// Flags sets the flags of the column.
 func (c *TableColumnWidget) Flags(flags TableColumnFlags) *TableColumnWidget {
 	c.flags = flags
 	return c
 }
 
+// InnerWidthOrWeight sets the inner width or weight of the column.
 func (c *TableColumnWidget) InnerWidthOrWeight(w float32) *TableColumnWidget {
 	c.innerWidthOrWeight = w
 	return c
 }
 
+// UserID sets the user id of the column.
 func (c *TableColumnWidget) UserID(id uint32) *TableColumnWidget {
 	c.userID = id
 	return c
@@ -96,6 +108,10 @@ func (c *TableColumnWidget) BuildTableColumn() {
 
 var _ Widget = &TableWidget{}
 
+// TableWidget is a table widget.
+// - Call Table to create new
+// - Then use Rows method to add content
+// - Use Columns method to configure columns (optional).
 type TableWidget struct {
 	id           ID
 	flags        TableFlags
@@ -109,6 +125,7 @@ type TableWidget struct {
 	noHeader     bool
 }
 
+// Table creates new TableWidget.
 func Table() *TableWidget {
 	return &TableWidget{
 		id:           GenAutoID("Table"),
@@ -158,21 +175,25 @@ func (t *TableWidget) Columns(cols ...*TableColumnWidget) *TableWidget {
 	return t
 }
 
+// Rows sets the rows of the table.
 func (t *TableWidget) Rows(rows ...*TableRowWidget) *TableWidget {
 	t.rows = rows
 	return t
 }
 
+// Size sets the size of the table.
 func (t *TableWidget) Size(width, height float32) *TableWidget {
 	t.size = imgui.Vec2{X: width, Y: height}
 	return t
 }
 
+// InnerWidth sets the inner width of the table.
 func (t *TableWidget) InnerWidth(width float64) *TableWidget {
 	t.innerWidth = width
 	return t
 }
 
+// Flags sets the flags of the table.
 func (t *TableWidget) Flags(flags TableFlags) *TableWidget {
 	t.flags = flags
 	return t

Widgets.go

@@ -56,6 +56,8 @@ func SameLine() {
 
 var _ Widget = &ChildWidget{}
 
+// ChildWidget is a container widget. It will have a separated scroll bar.
+// Use Child if you want to create a layout of e specific size.
 type ChildWidget struct {
 	id     ID
 	width  float32
@@ -65,36 +67,38 @@ type ChildWidget struct {
 	layout Layout
 }
 
-// Build implements Widget interface.
-func (c *ChildWidget) Build() {
-	if imgui.BeginChildStrV(c.id.String(), imgui.Vec2{X: c.width, Y: c.height}, func() imgui.ChildFlags {
-		if c.border {
-			return imgui.ChildFlagsBorders
-		}
-
-		return 0
-	}(), imgui.WindowFlags(c.flags)) {
-		c.layout.Build()
+// Child creates a new ChildWidget.
+func Child() *ChildWidget {
+	return &ChildWidget{
+		id:     GenAutoID("Child"),
+		width:  0,
+		height: 0,
+		border: true,
+		flags:  0,
+		layout: nil,
 	}
-
-	imgui.EndChild()
 }
 
+// Border sets whether child should have border
+// You can use imgui.ChildFlagsBorders as well.
 func (c *ChildWidget) Border(border bool) *ChildWidget {
 	c.border = border
 	return c
 }
 
+// Size sets child size.
 func (c *ChildWidget) Size(width, height float32) *ChildWidget {
 	c.width, c.height = width, height
 	return c
 }
 
+// Flags allows to specify Child flags.
 func (c *ChildWidget) Flags(flags WindowFlags) *ChildWidget {
 	c.flags = flags
 	return c
 }
 
+// Layout sets widgets that will be rendered inside of the Child.
 func (c *ChildWidget) Layout(widgets ...Widget) *ChildWidget {
 	c.layout = Layout(widgets)
 	return c
@@ -106,15 +110,19 @@ func (c *ChildWidget) ID(id ID) *ChildWidget {
 	return c
 }
 
-func Child() *ChildWidget {
-	return &ChildWidget{
-		id:     GenAutoID("Child"),
-		width:  0,
-		height: 0,
-		border: true,
-		flags:  0,
-		layout: nil,
+// Build makes a Child.
+func (c *ChildWidget) Build() {
+	if imgui.BeginChildStrV(c.id.String(), imgui.Vec2{X: c.width, Y: c.height}, func() imgui.ChildFlags {
+		if c.border {
+			return imgui.ChildFlagsBorders
+		}
+
+		return 0
+	}(), imgui.WindowFlags(c.flags)) {
+		c.layout.Build()
 	}
+
+	imgui.EndChild()
 }
 
 var _ Widget = &ComboCustomWidget{}

examples/CSS-styling/main.go

@@ -22,8 +22,10 @@ func loop() {
 
 func main() {
 	wnd := giu.NewMasterWindow("CSS Style [example]", 640, 480, 0)
+
 	if err := giu.ParseCSSStyleSheet(cssStyle); err != nil {
 		panic(err)
 	}
+
 	wnd.Run(loop)
 }

examples/canvas/canvas.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"image"
 	"image/color"
 
@@ -11,7 +10,6 @@ import (
 var texture *g.Texture
 
 func loop() {
-	fmt.Println(texture.ID())
 	g.SingleWindow().Layout(
 		g.Label("Canvas demo"),
 		g.Custom(func() {
@@ -32,7 +30,8 @@ func loop() {
 			p2 := pos.Add(image.Pt(120, 210))
 			p3 := pos.Add(image.Pt(210, 210))
 			p4 := pos.Add(image.Pt(210, 150))
-			// canvas.AddTriangle(p1, p2, p3, col, 2)
+
+			canvas.AddTriangle(p1, p2, p3, col, 2)
 			canvas.AddQuad(p1, p2, p3, p4, col, 1)
 
 			p1 = p1.Add(image.Pt(120, 60))
@@ -41,6 +40,7 @@ func loop() {
 			p1 = pos.Add(image.Pt(10, 400))
 			p2 = pos.Add(image.Pt(50, 440))
 			p3 = pos.Add(image.Pt(200, 500))
+
 			canvas.PathLineTo(p1)
 			canvas.PathLineTo(p2)
 			canvas.PathBezierCubicCurveTo(p2.Add(image.Pt(40, 0)), p3.Add(image.Pt(-50, 0)), p3, 0)