74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package mouse
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import (
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"github.com/go-gl/glfw/v3.3/glfw"
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"zworld/plugins/system/input/keys"
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"zworld/plugins/math/vec2"
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)
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type Callback func(Event)
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type Handler interface {
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MouseEvent(Event)
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}
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type MouseWrapper interface {
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Button(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mod glfw.ModifierKey)
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Move(w *glfw.Window, x, y float64)
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Scroll(w *glfw.Window, x, y float64)
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}
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type wrapper struct {
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Handler
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position vec2.T
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}
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func NewWrapper(handler Handler) MouseWrapper {
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return &wrapper{
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Handler: handler,
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}
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}
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func (mw *wrapper) Button(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mod glfw.ModifierKey) {
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mw.MouseEvent(&event{
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action: Action(action),
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button: Button(button),
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mods: keys.Modifier(mod),
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position: mw.position,
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locked: locked,
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})
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}
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func (mw *wrapper) Move(w *glfw.Window, x, y float64) {
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// calculate framebuffer scale relative to window
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width, _ := w.GetSize()
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fwidth, fheight := w.GetFramebufferSize()
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scale := float32(fwidth) / float32(width)
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// calculate framebuffer position & mouse delta
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pos := vec2.New(float32(x), float32(y)).Scaled(scale)
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dt := pos.Sub(mw.position)
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mw.position = pos
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// discard events that occur outside of the window bounds
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if pos.X < 0 || pos.Y < 0 || int(pos.X) > fwidth || int(pos.Y) > fheight {
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return
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}
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// submit event to handler
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mw.MouseEvent(&event{
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action: Move,
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position: pos,
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delta: dt,
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locked: locked,
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})
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}
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func (mw *wrapper) Scroll(w *glfw.Window, x, y float64) {
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mw.MouseEvent(&event{
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action: Scroll,
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scroll: vec2.New(float32(x), float32(y)),
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locked: locked,
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})
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}
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