debugui: add bounds argument to GridCell

Author: hajimehoshi

control.go

@@ -136,7 +136,7 @@ func (c *Context) control(id controlID, opt option, f func(bounds image.Rectangl
 // Text creates a text label.
 func (c *Context) Text(text string) {
 	c.wrapError(func() error {
-		if err := c.gridCell(func() error {
+		if err := c.gridCell(func(bounds image.Rectangle) error {
 			var endIdx, p int
 			c.SetGridLayout([]int{-1}, []int{lineHeight()})
 			for endIdx < len(text) {

example/ui.go

@@ -68,7 +68,7 @@ func (g *Game) testWindow(ctx *debugui.Context) {
 		})
 		ctx.Header("Tree and Text", true, func() {
 			ctx.SetGridLayout([]int{-1, -1}, nil)
-			ctx.GridCell(func() {
+			ctx.GridCell(func(bounds image.Rectangle) {
 				ctx.TreeNode("Test 1", func() {
 					ctx.TreeNode("Test 1a", func() {
 						ctx.Text("Hello")
@@ -111,7 +111,7 @@ func (g *Game) testWindow(ctx *debugui.Context) {
 		})
 		ctx.Header("Color", true, func() {
 			ctx.SetGridLayout([]int{-3, -1}, []int{54})
-			ctx.GridCell(func() {
+			ctx.GridCell(func(bounds image.Rectangle) {
 				ctx.SetGridLayout([]int{-1, -3}, nil)
 				ctx.Text("Red:")
 				ctx.Slider(&g.bg[0], 0, 255, 1)
@@ -167,7 +167,7 @@ func (g *Game) logWindow(ctx *debugui.Context) {
 				g.logUpdated = false
 			}
 		})
-		ctx.GridCell(func() {
+		ctx.GridCell(func(bounds image.Rectangle) {
 			var submit bool
 			ctx.SetGridLayout([]int{-3, -1}, nil)
 			if ctx.TextField(&g.logSubmitBuf) {

layout.go

@@ -83,10 +83,10 @@ func (c *Context) popLayout() error {
 	return err
 }
 
-func (c *Context) GridCell(f func()) {
+func (c *Context) GridCell(f func(bounds image.Rectangle)) {
 	c.wrapError(func() error {
-		if err := c.gridCell(func() error {
-			f()
+		if err := c.gridCell(func(bounds image.Rectangle) error {
+			f(bounds)
 			return nil
 		}); err != nil {
 			return err
@@ -95,7 +95,7 @@ func (c *Context) GridCell(f func()) {
 	})
 }
 
-func (c *Context) gridCell(f func() error) error {
+func (c *Context) gridCell(f func(bounds image.Rectangle) error) error {
 	_, err := c.control(emptyControlID, 0, func(bounds image.Rectangle, wasFocused bool) (res bool, err error) {
 		if err := c.pushLayout(bounds, image.Pt(0, 0), false); err != nil {
 			return false, err
@@ -105,7 +105,7 @@ func (c *Context) gridCell(f func() error) error {
 				err = err2
 			}
 		}()
-		if err := f(); err != nil {
+		if err := f(bounds); err != nil {
 			return false, err
 		}
 		b := &c.layoutStack[len(c.layoutStack)-1]