reorganized source, added test cases for tuning

src/widgets.go

@@ -0,0 +1,161 @@
+package main
+
+import (
+	"image/color"
+
+	"github.com/ebitenui/ebitenui/image"
+	"github.com/ebitenui/ebitenui/widget"
+)
+
+func NewMenuButton(
+	text string,
+	action func(args *widget.ButtonClickedEventArgs)) *widget.Button {
+
+	buttonImage, _ := LoadButtonImage()
+
+	return widget.NewButton(
+		widget.ButtonOpts.WidgetOpts(
+			widget.WidgetOpts.LayoutData(widget.RowLayoutData{
+				Position:  widget.RowLayoutPositionCenter,
+				Stretch:   true,
+				MaxWidth:  200,
+				MaxHeight: 100,
+			}),
+		),
+
+		widget.ButtonOpts.Image(buttonImage),
+
+		widget.ButtonOpts.Text(text, *FontRenderer.FontSmall, &widget.ButtonTextColor{
+			Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
+		}),
+
+		widget.ButtonOpts.TextPadding(widget.Insets{
+			Left:   5,
+			Right:  5,
+			Top:    5,
+			Bottom: 5,
+		}),
+
+		widget.ButtonOpts.ClickedHandler(action),
+	)
+}
+
+func NewCheckbox(
+	text string,
+	action func(args *widget.CheckboxChangedEventArgs)) *widget.LabeledCheckbox {
+
+	checkboxImage, _ := LoadCheckboxImage()
+	buttonImage, _ := LoadButtonImage()
+
+	return widget.NewLabeledCheckbox(
+		widget.LabeledCheckboxOpts.CheckboxOpts(
+			widget.CheckboxOpts.ButtonOpts(
+				widget.ButtonOpts.Image(buttonImage),
+			),
+			widget.CheckboxOpts.Image(checkboxImage),
+			widget.CheckboxOpts.StateChangedHandler(action),
+		),
+		widget.LabeledCheckboxOpts.LabelOpts(
+			widget.LabelOpts.Text(text, *FontRenderer.FontSmall,
+				&widget.LabelColor{
+					Idle: color.NRGBA{0xdf, 0xf4, 0xff, 0xff},
+				}),
+		),
+	)
+}
+
+func NewSeparator(padding int) widget.PreferredSizeLocateableWidget {
+	c := widget.NewContainer(
+		widget.ContainerOpts.Layout(widget.NewRowLayout(
+			widget.RowLayoutOpts.Direction(widget.DirectionVertical),
+			widget.RowLayoutOpts.Padding(widget.Insets{
+				Top:    padding,
+				Bottom: 0,
+			}))),
+		widget.ContainerOpts.WidgetOpts(
+			widget.WidgetOpts.LayoutData(
+				widget.RowLayoutData{Stretch: true})))
+	return c
+}
+
+type RowContainer struct {
+	Root *widget.Container
+	Row  *widget.Container
+}
+
+func (container *RowContainer) AddChild(child widget.PreferredSizeLocateableWidget) {
+	container.Row.AddChild(child)
+}
+
+func (container *RowContainer) Container() *widget.Container {
+	return container.Root
+}
+
+// set arg to false if no background needed
+func NewRowContainer(title string) *RowContainer {
+	buttonImageHover := image.NewNineSlice(Assets["button-9slice3"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
+
+	uiContainer := widget.NewContainer(
+		widget.ContainerOpts.Layout(widget.NewAnchorLayout()),
+	)
+
+	titleLabel := widget.NewText(
+		widget.TextOpts.WidgetOpts(widget.WidgetOpts.LayoutData(widget.RowLayoutData{
+			Stretch: true,
+		})),
+		widget.TextOpts.Text(title, *FontRenderer.FontNormal, color.NRGBA{0xdf, 0xf4, 0xff, 0xff}))
+
+	rowContainer := widget.NewContainer(
+		widget.ContainerOpts.WidgetOpts(
+			widget.WidgetOpts.LayoutData(widget.AnchorLayoutData{
+				HorizontalPosition: widget.AnchorLayoutPositionCenter,
+				VerticalPosition:   widget.AnchorLayoutPositionCenter,
+			}),
+		),
+		widget.ContainerOpts.Layout(widget.NewRowLayout(
+			widget.RowLayoutOpts.Direction(widget.DirectionVertical),
+			widget.RowLayoutOpts.Padding(widget.NewInsetsSimple(8)),
+			widget.RowLayoutOpts.Spacing(0),
+		)),
+		widget.ContainerOpts.BackgroundImage(buttonImageHover),
+	)
+
+	rowContainer.AddChild(titleLabel)
+
+	uiContainer.AddChild(rowContainer)
+
+	return &RowContainer{
+		Root: uiContainer,
+		Row:  rowContainer,
+	}
+}
+
+func LoadButtonImage() (*widget.ButtonImage, error) {
+	idle := image.NewNineSlice(Assets["button-9slice2"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
+	hover := image.NewNineSlice(Assets["button-9slice3"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
+	pressed := image.NewNineSlice(Assets["button-9slice1"], [3]int{3, 3, 3}, [3]int{3, 3, 3})
+
+	return &widget.ButtonImage{
+		Idle:    idle,
+		Hover:   hover,
+		Pressed: pressed,
+	}, nil
+}
+
+func LoadCheckboxImage() (*widget.CheckboxGraphicImage, error) {
+	unchecked := &widget.ButtonImageImage{
+		Idle:     Assets["checkbox-9slice2"],
+		Disabled: Assets["checkbox-9slice2"],
+	}
+
+	checked := &widget.ButtonImageImage{
+		Idle:     Assets["checkbox-9slice1"],
+		Disabled: Assets["checkbox-9slice1"],
+	}
+
+	return &widget.CheckboxGraphicImage{
+		Checked:   checked,
+		Unchecked: unchecked,
+		Greyed:    unchecked,
+	}, nil
+}