Noah Petherbridge
c7cc40a339
Since SDL2 is using in-memory bitmaps the same as Canvas engine, the function names of the render.Engine interface have been cleaned up: * NewTexture(filename, image) -> StoreTexture(name, image) Create a new cached texture with a given name. * NewBitmap(filename) -> LoadTexture(name) Recall a stored texture with a given name. * level.Chunk.ToBitmap uses simpler names for the textures instead of userdir.CacheFilename file-like paths.
64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
package wallpaper
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// The methods that deal in cached Textures for Doodle.
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import (
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"errors"
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"image"
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"git.kirsle.net/apps/doodle/lib/render"
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"git.kirsle.net/apps/doodle/pkg/shmem"
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"git.kirsle.net/apps/doodle/pkg/userdir"
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)
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// CornerTexture returns the Texture.
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func (wp *Wallpaper) CornerTexture(e render.Engine) (render.Texturer, error) {
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if !wp.ready {
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return nil, errors.New("wallpaper not ready")
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}
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if wp.tex.corner == nil {
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tex, err := texture(e, wp.corner, wp.Name+"c")
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wp.tex.corner = tex
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return tex, err
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}
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return wp.tex.corner, nil
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}
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// TopTexture returns the Texture.
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func (wp *Wallpaper) TopTexture(e render.Engine) (render.Texturer, error) {
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if wp.tex.top == nil {
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tex, err := texture(e, wp.top, wp.Name+"t")
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wp.tex.top = tex
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return tex, err
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}
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return wp.tex.top, nil
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}
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// LeftTexture returns the Texture.
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func (wp *Wallpaper) LeftTexture(e render.Engine) (render.Texturer, error) {
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if wp.tex.left == nil {
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tex, err := texture(e, wp.left, wp.Name+"l")
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wp.tex.left = tex
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return tex, err
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}
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return wp.tex.left, nil
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}
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// RepeatTexture returns the Texture.
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func (wp *Wallpaper) RepeatTexture(e render.Engine) (render.Texturer, error) {
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if wp.tex.repeat == nil {
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tex, err := texture(e, wp.repeat, wp.Name+"x")
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wp.tex.repeat = tex
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return tex, err
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}
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return wp.tex.repeat, nil
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}
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// texture creates or returns a cached texture for a wallpaper.
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func texture(e render.Engine, img *image.RGBA, name string) (render.Texturer, error) {
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filename := userdir.CacheFilename("wallpaper", name+".bmp")
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texture, err := shmem.CurrentRenderEngine.StoreTexture(filename, img)
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return texture, err
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}
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