ZacharyZhang-NY
51af14709d
A terminal with history, a Go-colored code block, a log viewer that follows, a hex viewer, a memory map, a JSON tree, a line diff, a GAME OVER crash screen, an FPS meter, profiler bars, breakpoints, variables, command history, a shortcut list, a debug grid, a pixel editor that exports string art, a palette editor, a sprite sheet, a glyph map and a 6502 register view. layout.ScrollArea takes Follow, and ChatLog now uses it. data.TreeNode takes a Value drawn in its Slot. pixel gains Has, and Sprite.Art writes MustSprite art. pixel.Editor takes the caller's value at each input event, so a value changed between frames is never typed onto.
105 lines
2.7 KiB
Go
105 lines
2.7 KiB
Go
package code
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import (
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"fmt"
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"strings"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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// CPU is a 6502's registers; P holds the flags.
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type CPU struct {
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A, X, Y, SP, P uint8
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PC uint16
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}
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type RegisterViewOptions struct{}
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type regKey struct{}
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// seen is the CPU last shown and bits it flipped.
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type seen struct {
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cpu, flipped CPU
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}
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const flags = "NV-BDIZC"
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// RegisterView shows registers and flags; the last change lights.
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func RegisterView(c *ui.Context, text string, cpu CPU, o RegisterViewOptions) *ui.Element {
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k := pixel.K(c)
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col := ui.Column(c).Gap(k.D(1)).Role(ui.RoleGroup).Label(text)
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sn := ui.Local(col, regKey{}, func() seen { return seen{cpu: cpu} })
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if cpu != sn.cpu {
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was := sn.cpu
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sn.cpu, sn.flipped = cpu, CPU{A: was.A ^ cpu.A, X: was.X ^ cpu.X, Y: was.Y ^ cpu.Y, SP: was.SP ^ cpu.SP, P: was.P ^ cpu.P, PC: was.PC ^ cpu.PC}
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}
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fl := sn.flipped
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return col.Children(func() {
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for _, r := range []struct {
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name string
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v, change uint16
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wide bool
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}{
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{"A", uint16(cpu.A), uint16(fl.A), false}, {"X", uint16(cpu.X), uint16(fl.X), false}, {"Y", uint16(cpu.Y), uint16(fl.Y), false},
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{"SP", uint16(cpu.SP), uint16(fl.SP), false}, {"PC", cpu.PC, fl.PC, true},
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} {
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digits := 2
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if r.wide {
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digits = 4
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}
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hexed := fmt.Sprintf("$%0*X", digits, r.v)
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ui.Box(c).Size(k.D(120), k.D(pixel.LineHeight)).Role(ui.RoleText).Label(r.name + " " + hexed).Draw(func(p *ui.Painter, rc ui.Rect) {
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g := k.Canvas(p, rc)
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g.Micro(0, 4, r.name, pixel.Faint, 1)
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ink := pixel.Ink
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if r.change != 0 {
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ink = pixel.Accent
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}
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g.Text(12, 0, hexed, ink, 1)
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if !r.wide {
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bits(g, 52, uint8(r.v), uint8(r.change))
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}
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})
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}
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set := []string{}
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for i := range 8 {
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if cpu.P&(0x80>>i) != 0 && flags[i] != '-' {
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set = append(set, string(flags[i]))
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}
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}
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ui.Box(c).Size(k.D(8*9), k.D(14)).Role(ui.RoleText).Label(fmt.Sprintf("P $%02X", cpu.P)).Description(strings.Join(set, " ")).Draw(func(p *ui.Painter, rc ui.Rect) {
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g := k.Canvas(p, rc)
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for i := range 8 {
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x, on, flip := i*9, cpu.P&(0x80>>i) != 0, fl.P&(0x80>>i) != 0
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fill, ink := pixel.Well, pixel.Faint
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if on {
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fill, ink = pixel.Good, pixel.AccentInk
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}
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edge := pixel.Shade
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if flip {
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edge = pixel.Accent
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}
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g.Rect(x, 0, 8, 14, edge)
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g.Rect(x+1, 1, 6, 12, fill)
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g.Micro(x+3-1, 5, string(flags[i]), ink, 1)
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}
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})
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})
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}
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// bits draws v's eight bits; flipped ones light.
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func bits(g pixel.Canvas, x int, v, flipped uint8) {
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for i := range 8 {
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b, ink := "0", pixel.Faint
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if v&(0x80>>i) != 0 {
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b, ink = "1", pixel.Ink
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}
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if flipped&(0x80>>i) != 0 {
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ink = pixel.Accent
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}
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g.Micro(x+i*4+i/4*2, 4, b, ink, 1)
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}
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}
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