added equasion list

history.go

@@ -0,0 +1,95 @@
+package main
+
+import (
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/widget"
+)
+
+type calculation struct {
+	id        int
+	equation  string
+	diceRolls string
+	result    string
+}
+
+type historyItemRenderer struct {
+	item           *historyItem
+	equationLabel  *widget.Label
+	diceRollsLabel *widget.Label
+	resultLabel    *widget.Label
+	objects        []fyne.CanvasObject
+}
+
+func (r *historyItemRenderer) MinSize() fyne.Size {
+	return r.objects[0].MinSize()
+}
+
+func (r *historyItemRenderer) Layout(size fyne.Size) {
+	r.objects[0].Resize(size)
+}
+
+func (r *historyItemRenderer) ApplyTheme() {
+}
+
+func (r *historyItemRenderer) Refresh() {
+	r.equationLabel.SetText(r.item.calc.equation)
+	r.diceRollsLabel.SetText(r.item.calc.diceRolls)
+	r.resultLabel.SetText(r.item.calc.result)
+	r.equationLabel.Refresh()
+	r.diceRollsLabel.Refresh()
+	r.resultLabel.Refresh()
+}
+
+func (r *historyItemRenderer) Objects() []fyne.CanvasObject {
+	return r.objects
+}
+
+func (r *historyItemRenderer) Destroy() {
+}
+
+type historyItem struct {
+	widget.BaseWidget
+	calc *calculation
+}
+
+func (h *historyItem) CreateRenderer() fyne.WidgetRenderer {
+	h.ExtendBaseWidget(h)
+	equationLabel := widget.NewLabel(h.calc.equation)
+	equationLabel.TextStyle.Bold = true
+
+	diceRollsLabel := widget.NewLabel(h.calc.diceRolls)
+	diceRollsLabel.TextStyle.Italic = true
+
+	resultLabel := widget.NewLabel(h.calc.result)
+	resultLabel.Alignment = fyne.TextAlignTrailing
+
+	layout := container.NewBorder(
+		nil,
+		nil,
+		container.NewVBox(
+			equationLabel,
+			diceRollsLabel,
+		),
+		resultLabel,
+	)
+
+	return &historyItemRenderer{
+		item:           h,
+		equationLabel:  equationLabel,
+		diceRollsLabel: diceRollsLabel,
+		resultLabel:    resultLabel,
+		objects:        []fyne.CanvasObject{layout},
+	}
+}
+
+func (h *historyItem) SetCalculation(c *calculation) {
+	h.calc = c
+	h.Refresh()
+}
+
+func newHistoryItem(c *calculation) *historyItem {
+	item := &historyItem{calc: c}
+	item.ExtendBaseWidget(item)
+	return item
+}