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|
package main
import (
"fmt"
tui "github.com/grindlemire/go-tui"
)
type colorMixer struct {
red *tui.State[int]
green *tui.State[int]
blue *tui.State[int]
redUpBtn *tui.Ref
redDnBtn *tui.Ref
greenUpBtn *tui.Ref
greenDnBtn *tui.Ref
blueUpBtn *tui.Ref
blueDnBtn *tui.Ref
presetBtns *tui.RefMap[string]
activePreset *tui.State[string]
resetBtn *tui.Ref
showResetModal *tui.State[bool]
}
func ColorMixer() *colorMixer {
return &colorMixer{
red: tui.NewState(128),
green: tui.NewState(64),
blue: tui.NewState(200),
redUpBtn: tui.NewRef(),
redDnBtn: tui.NewRef(),
greenUpBtn: tui.NewRef(),
greenDnBtn: tui.NewRef(),
blueUpBtn: tui.NewRef(),
blueDnBtn: tui.NewRef(),
presetBtns: tui.NewRefMap[string](),
activePreset: tui.NewState(""),
resetBtn: tui.NewRef(),
showResetModal: tui.NewState(false),
}
}
type preset struct {
name string
r, g, b int
}
var presets = []preset{
{"Sunset", 255, 128, 0},
{"Ocean", 0, 100, 255},
{"Forest", 34, 180, 34},
{"Rose", 255, 64, 128},
}
func clamp(v, min, max int) int {
if v < min {
return min
}
if v > max {
return max
}
return v
}
func (c *colorMixer) adjustRed(delta int) {
c.red.Set(clamp(c.red.Get()+delta, 0, 255))
c.activePreset.Set("")
}
func (c *colorMixer) adjustGreen(delta int) {
c.green.Set(clamp(c.green.Get()+delta, 0, 255))
c.activePreset.Set("")
}
func (c *colorMixer) adjustBlue(delta int) {
c.blue.Set(clamp(c.blue.Get()+delta, 0, 255))
c.activePreset.Set("")
}
func (c *colorMixer) resetColors() {
c.red.Set(128)
c.green.Set(64)
c.blue.Set(200)
c.activePreset.Set("")
c.showResetModal.Set(false)
}
func (c *colorMixer) cancelReset() {
c.showResetModal.Set(false)
}
func (c *colorMixer) applyPreset(name string) {
for _, p := range presets {
if p.name == name {
c.red.Set(p.r)
c.green.Set(p.g)
c.blue.Set(p.b)
c.activePreset.Set(name)
return
}
}
}
func (c *colorMixer) KeyMap() tui.KeyMap {
return tui.KeyMap{
tui.On(tui.KeyEscape, func(ke tui.KeyEvent) { ke.App().Stop() }),
tui.On(tui.Rune('q'), func(ke tui.KeyEvent) { ke.App().Stop() }),
tui.On(tui.Rune('r'), func(ke tui.KeyEvent) { c.showResetModal.Set(true) }),
tui.On(tui.Rune('R'), func(ke tui.KeyEvent) { c.adjustRed(-16) }),
tui.On(tui.Rune('g'), func(ke tui.KeyEvent) { c.adjustGreen(16) }),
tui.On(tui.Rune('G'), func(ke tui.KeyEvent) { c.adjustGreen(-16) }),
tui.On(tui.Rune('b'), func(ke tui.KeyEvent) { c.adjustBlue(16) }),
tui.On(tui.Rune('B'), func(ke tui.KeyEvent) { c.adjustBlue(-16) }),
}
}
func (c *colorMixer) HandleMouse(me tui.MouseEvent) bool {
// Check single-ref button clicks
if tui.HandleClicks(me,
tui.Click(c.redUpBtn, func() { c.adjustRed(16) }),
tui.Click(c.redDnBtn, func() { c.adjustRed(-16) }),
tui.Click(c.greenUpBtn, func() { c.adjustGreen(16) }),
tui.Click(c.greenDnBtn, func() { c.adjustGreen(-16) }),
tui.Click(c.blueUpBtn, func() { c.adjustBlue(16) }),
tui.Click(c.blueDnBtn, func() { c.adjustBlue(-16) }),
tui.Click(c.resetBtn, func() { c.showResetModal.Set(true) }),
) {
return true
}
// Check keyed-ref preset button clicks via RefMap
if me.Button == tui.MouseLeft && me.Action == tui.MousePress {
for name, el := range c.presetBtns.All() {
if el != nil && el.ContainsPoint(me.X, me.Y) {
c.applyPreset(name)
return true
}
}
}
return false
}
func colorBar(value int) string {
filled := value * 20 / 255
bar := ""
for i := 0; i < 20; i++ {
if i < filled {
bar += "█"
} else {
bar += "░"
}
}
return bar
}
templ (c *colorMixer) Render() {
<div class="flex-col p-1 border-rounded border-cyan">
<span class="text-gradient-cyan-magenta font-bold">Color Mixer</span>
// Color preview
<div class="flex-col items-center border-rounded p-1">
<span class="text-gradient-cyan-magenta font-bold">Preview</span>
<div backgroundGradient={tui.NewGradient(tui.Black, tui.RGBColor(uint8(c.red.Get()), uint8(c.green.Get()), uint8(c.blue.Get())))} height={2} width={30}>
<span>{" "}</span>
</div>
<div class="flex gap-2 justify-center">
<span class="text-red font-bold">{fmt.Sprintf("R: %d", c.red.Get())}</span>
<span class="text-green font-bold">{fmt.Sprintf("G: %d", c.green.Get())}</span>
<span class="text-blue font-bold">{fmt.Sprintf("B: %d", c.blue.Get())}</span>
</div>
</div>
// Color bars
<div class="flex-col border-rounded p-1">
<div class="flex gap-1">
<span class="text-red font-bold w-5">Red</span>
<span class="text-red">{colorBar(c.red.Get())}</span>
<span class="text-red font-bold">{fmt.Sprintf("%3d", c.red.Get())}</span>
</div>
<div class="flex gap-1">
<span class="text-green font-bold w-5">Grn</span>
<span class="text-green">{colorBar(c.green.Get())}</span>
<span class="text-green font-bold">{fmt.Sprintf("%3d", c.green.Get())}</span>
</div>
<div class="flex gap-1">
<span class="text-blue font-bold w-5">Blu</span>
<span class="text-blue">{colorBar(c.blue.Get())}</span>
<span class="text-blue font-bold">{fmt.Sprintf("%3d", c.blue.Get())}</span>
</div>
</div>
// Channel controls with refs
<div class="flex gap-1">
<div class="flex-col border-rounded p-1 items-center" flexGrow={1.0}>
<span class="font-bold text-red">Red</span>
<div class="flex gap-1 items-center">
<button ref={c.redDnBtn} class="px-1">{"-"}</button>
<span class="font-bold text-red">{fmt.Sprintf("%3d", c.red.Get())}</span>
<button ref={c.redUpBtn} class="px-1">{"+"}</button>
</div>
</div>
<div class="flex-col border-rounded p-1 items-center" flexGrow={1.0}>
<span class="font-bold text-green">Green</span>
<div class="flex gap-1 items-center">
<button ref={c.greenDnBtn} class="px-1">{"-"}</button>
<span class="font-bold text-green">{fmt.Sprintf("%3d", c.green.Get())}</span>
<button ref={c.greenUpBtn} class="px-1">{"+"}</button>
</div>
</div>
<div class="flex-col border-rounded p-1 items-center" flexGrow={1.0}>
<span class="font-bold text-blue">Blue</span>
<div class="flex gap-1 items-center">
<button ref={c.blueDnBtn} class="px-1">{"-"}</button>
<span class="font-bold text-blue">{fmt.Sprintf("%3d", c.blue.Get())}</span>
<button ref={c.blueUpBtn} class="px-1">{"+"}</button>
</div>
</div>
</div>
// Preset colors using RefMap with key
<div class="flex gap-1 border-rounded p-1 items-center">
<span class="font-bold">Presets:</span>
for _, p := range presets {
if p.name == c.activePreset.Get() {
<button ref={c.presetBtns} key={p.name} class="px-1 font-bold text-cyan">{p.name}</button>
} else {
<button ref={c.presetBtns} key={p.name} class="px-1 font-dim">{p.name}</button>
}
}
</div>
<div class="flex gap-2 justify-center">
<button ref={c.resetBtn} class="px-1 text-red">Reset</button>
</div>
<div class="flex justify-center">
<span class="font-dim">r reset | g/b increase | G/B decrease | click buttons/presets | q quit</span>
</div>
// Confirmation modal for resetting colors
<modal open={c.showResetModal} class="justify-center items-center">
<div class="border-rounded p-2 flex-col gap-1 w-36 items-center">
<span class="font-bold text-yellow">Reset Colors?</span>
<span class="font-dim">This will restore default values.</span>
<div class="flex gap-2 justify-center">
<button class="px-2 text-green font-bold border-single focusable" onActivate={c.cancelReset}>Cancel</button>
<button class="px-2 text-red font-bold border-single focusable" onActivate={c.resetColors}>Yes, Reset</button>
</div>
</div>
</modal>
</div>
}
|