69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
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package cache
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import (
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"sync"
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"fyne.io/fyne/v2"
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)
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var textures = sync.Map{} // map[fyne.CanvasObject]*textureInfo
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// DeleteTexture deletes the texture from the cache map.
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func DeleteTexture(obj fyne.CanvasObject) {
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textures.Delete(obj)
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}
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// GetTexture gets cached texture.
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func GetTexture(obj fyne.CanvasObject) (TextureType, bool) {
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t, ok := textures.Load(obj)
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if t == nil || !ok {
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return NoTexture, false
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}
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texInfo := t.(*textureInfo)
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texInfo.setAlive()
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return texInfo.texture, true
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}
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// RangeExpiredTexturesFor range over the expired textures for the specified canvas.
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//
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// Note: If this is used to free textures, then it should be called inside a current
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// gl context to ensure textures are deleted from gl.
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func RangeExpiredTexturesFor(canvas fyne.Canvas, f func(fyne.CanvasObject)) {
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now := timeNow()
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textures.Range(func(key, value interface{}) bool {
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obj, tinfo := key.(fyne.CanvasObject), value.(*textureInfo)
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if tinfo.isExpired(now) && tinfo.canvas == canvas {
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f(obj)
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}
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return true
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})
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}
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// RangeTexturesFor range over the textures for the specified canvas.
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//
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// Note: If this is used to free textures, then it should be called inside a current
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// gl context to ensure textures are deleted from gl.
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func RangeTexturesFor(canvas fyne.Canvas, f func(fyne.CanvasObject)) {
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textures.Range(func(key, value interface{}) bool {
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obj, tinfo := key.(fyne.CanvasObject), value.(*textureInfo)
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if tinfo.canvas == canvas {
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f(obj)
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}
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return true
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})
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}
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// SetTexture sets cached texture.
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func SetTexture(obj fyne.CanvasObject, texture TextureType, canvas fyne.Canvas) {
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texInfo := &textureInfo{texture: texture}
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texInfo.canvas = canvas
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texInfo.setAlive()
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textures.Store(obj, texInfo)
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}
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// textureCacheBase defines base texture cache object.
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type textureCacheBase struct {
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expiringCacheNoLock
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canvas fyne.Canvas
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}
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