Greg Pomerantz
620d534454
- StateReader interface in ui package (Scale(), ScreenWidth(), ScreenHeight()) - State implements StateReader - Renderer reads scale/window size via interface, never imports editor - State fields are private (screenWidth, screenHeight, scale) with accessor methods - No SetScale/SetWindowSize calls from main.go — Renderer reads from State directly
132 lines
3.2 KiB
Go
132 lines
3.2 KiB
Go
package editor
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import (
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"sync"
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"pad/internal/ui"
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)
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// ConfigEvent represents a window configuration change (resize, orientation).
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// Width and Height are in device-independent pixels (Dp).
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type ConfigEvent struct {
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Width ui.Dp
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Height ui.Dp
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}
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// ScaleEvent represents a metric change (HiDPI scale factor).
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type ScaleEvent struct {
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Scale float32
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}
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// ConfigUpdate is a common interface for all configuration updates.
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// Both ConfigEvent and ScaleEvent implement this interface.
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type ConfigUpdate interface {
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apply(*State)
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}
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func (e ConfigEvent) apply(s *State) {
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s.SetSize(e.Width, e.Height)
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}
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func (e ScaleEvent) apply(s *State) {
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s.SetScale(e.Scale)
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}
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// InputEvent represents a user input event routed to an element.
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type InputEvent struct {
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ElementID string
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Type ui.InputType
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Data any
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}
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// ResultEvent represents a completed async task result.
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type ResultEvent struct {
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// Future: add result fields here
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}
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// Logic runs the logic goroutine and provides channels for communication.
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type Logic struct {
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state *State
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configChan chan ConfigUpdate
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frameChan chan []ui.Element
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inputChan chan []InputEvent
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resultChan chan ResultEvent
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mu sync.Mutex
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}
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// NewLogic creates a new Logic instance.
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// screenWidth and screenHeight are in device-independent pixels (Dp).
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func NewLogic(screenWidth, screenHeight ui.Dp) *Logic {
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return &Logic{
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state: NewState(screenWidth, screenHeight),
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configChan: make(chan ConfigUpdate),
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frameChan: make(chan []ui.Element),
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inputChan: make(chan []InputEvent),
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resultChan: make(chan ResultEvent),
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}
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}
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// ConfigChan returns the unified config channel for the logic goroutine.
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// Accepts ConfigEvent (size) and ScaleEvent (scale factor).
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func (l *Logic) ConfigChan() chan<- ConfigUpdate {
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return l.configChan
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}
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// FrameChan returns the frame channel for the logic goroutine.
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func (l *Logic) FrameChan() <-chan []ui.Element {
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return l.frameChan
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}
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// InputChan returns the input channel for the logic goroutine.
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func (l *Logic) InputChan() chan<- []InputEvent {
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return l.inputChan
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}
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// ResultChan returns the result channel for the logic goroutine.
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func (l *Logic) ResultChan() <-chan ResultEvent {
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return l.resultChan
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}
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// ScreenSize returns the current screen dimensions in Dp.
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func (l *Logic) ScreenSize() (ui.Dp, ui.Dp) {
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l.mu.Lock()
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defer l.mu.Unlock()
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return l.state.ScreenWidth(), l.state.ScreenHeight()
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}
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// Scale returns the current scale factor (pixels per DP).
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func (l *Logic) Scale() float32 {
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l.mu.Lock()
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defer l.mu.Unlock()
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return l.state.Scale()
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}
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// Run runs the logic goroutine loop.
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func (l *Logic) Run() {
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for {
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select {
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case update := <-l.configChan:
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// Type switch to differentiate ConfigEvent vs ScaleEvent
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switch e := update.(type) {
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case ConfigEvent:
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e.apply(l.state)
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l.frameChan <- l.state.Elems
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case ScaleEvent:
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e.apply(l.state)
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l.frameChan <- l.state.Elems
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}
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case <-l.inputChan:
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// Process input (not implemented in mockup)
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l.frameChan <- l.state.Elems
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case <-l.resultChan:
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// Handle result (not implemented in mockup)
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l.frameChan <- l.state.Elems
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}
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}
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}
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// State returns the current state.
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func (l *Logic) State() *State {
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return l.state
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}
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