crib/cardwidget.go

package main

import (
	"math"
	"strconv"

	"github.com/gdamore/tcell/v2"
	"gitlab.com/tslocum/cview"
	"gitlab.com/tslocum/joker"
)

type cardWidget struct {
	*cview.Box

	joker.Card
	selected     bool
	selectedFunc func(joker.Card)
}

func newCardWidget(card joker.Card, selectedFunc func(joker.Card)) *cardWidget {
	c := cardWidget{Box: cview.NewBox().ShowFocus(false), Card: card, selectedFunc: selectedFunc}

	c.Box.SetBorder(true)
	return &c
}

func (c *cardWidget) Select() {
	c.selected = !c.selected

	if c.selectedFunc != nil {
		c.selectedFunc(c.Card)
	}

	app.Draw()
}

func (c *cardWidget) Draw(screen tcell.Screen) {
	c.Box.Draw(screen)

	color := tcell.ColorDefault
	if c.Card.Suit == joker.SuitHearts || c.Card.Suit == joker.SuitDiamonds {
		color = tcell.NewHexColor(0xFF3232)
	}

	x, y, w, h := c.GetInnerRect()

	cview.Print(screen, cardFaceShort(c.Card), x, y, math.MaxInt64, cview.AlignLeft, tcell.ColorDefault)

	cview.Print(screen, c.Suit.Name()[0:1], x, y+1, math.MaxInt64, cview.AlignLeft, color)

	// Center
	if c.Face == joker.FaceAce || c.Face == joker.Face3 || c.Face == joker.Face5 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), y+(h/2), math.MaxInt64, cview.AlignLeft, color)
	} else if c.Face == joker.FaceJack || c.Face == joker.FaceQueen || c.Face == joker.FaceKing {
		cview.Print(screen, c.Face.Name()[0:1], x+(w/2), y+(h/2), math.MaxInt64, cview.AlignLeft, color)
	}

	// Top/bottom 2/3
	if c.Face == joker.Face2 || c.Face == joker.Face3 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), y+2, math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), (y+h)-3, math.MaxInt64, cview.AlignLeft, color)
	}

	// Top/bottom all others
	if c.Face == joker.Face4 || c.Face == joker.Face5 || c.Face == joker.Face6 || c.Face == joker.Face7 || c.Face == joker.Face8 || c.Face == joker.Face9 || c.Face == joker.Face10 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/4), y+2, math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2)+(w/4), y+2, math.MaxInt64, cview.AlignLeft, color)

		cview.Print(screen, c.Suit.Symbol(), x+(w/4), (y+h)-3, math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2)+(w/4), (y+h)-3, math.MaxInt64, cview.AlignLeft, color)
	}

	// Left/right
	if c.Face == joker.Face6 || c.Face == joker.Face7 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/4), y+(h/2), math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2)+(w/4), y+(h/2), math.MaxInt64, cview.AlignLeft, color)
	}

	// Center 7
	if c.Face == joker.Face7 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), y+(h/2)-1, math.MaxInt64, cview.AlignLeft, color)
	}

	// Secondary top/bottom
	if c.Face == joker.Face8 || c.Face == joker.Face9 || c.Face == joker.Face10 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/4), y+4, math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2)+(w/4), y+4, math.MaxInt64, cview.AlignLeft, color)

		cview.Print(screen, c.Suit.Symbol(), x+(w/4), (y+h)-5, math.MaxInt64, cview.AlignLeft, color)
		cview.Print(screen, c.Suit.Symbol(), x+(w/2)+(w/4), (y+h)-5, math.MaxInt64, cview.AlignLeft, color)
	}

	// Center 9/10
	if c.Face == joker.Face9 || c.Face == joker.Face10 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), y+(h/2)-2, math.MaxInt64, cview.AlignLeft, color)
	}

	// Center 10
	if c.Face == joker.Face10 {
		cview.Print(screen, c.Suit.Symbol(), x+(w/2), y+(h/2)+2, math.MaxInt64, cview.AlignLeft, color)
	}

	cview.Print(screen, c.Suit.Name()[0:1], (x+w)-1, (y+h)-2, math.MaxInt64, cview.AlignLeft, color)

	bottomFaceOffset := 0
	if c.Card.Face == joker.Face10 {
		bottomFaceOffset = 1
	}
	cview.Print(screen, cardFaceShort(c.Card), ((x+w)-1)-bottomFaceOffset, (y+h)-1, math.MaxInt64, cview.AlignLeft, tcell.ColorDefault)

	_ = w
	_ = h
}

func cardFaceShort(card joker.Card) string {
	switch card.Face {
	case joker.FaceAce, joker.FaceJack, joker.FaceQueen, joker.FaceKing:
		return card.Face.Name()[0:1]
	default:
		return strconv.Itoa(int(card.Face))
	}
}

// MouseHandler returns the mouse handler for this primitive.
func (c *cardWidget) MouseHandler() func(action cview.MouseAction, event *tcell.EventMouse, setFocus func(p cview.Primitive)) (consumed bool, capture cview.Primitive) {
	return c.WrapMouseHandler(func(action cview.MouseAction, event *tcell.EventMouse, setFocus func(p cview.Primitive)) (consumed bool, capture cview.Primitive) {
		if !c.InRect(event.Position()) {
			return false, nil
		}

		// Process mouse event.
		if action == cview.MouseLeftClick {
			consumed = true
			c.Select()
		}

		return
	})
}