mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2025-10-31 03:36:21 +08:00
133 lines
2.7 KiB
Go
133 lines
2.7 KiB
Go
// Copyright 2023 The Ebitengine Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"image/png"
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"io/fs"
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"log"
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"sync"
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"github.com/hajimehoshi/ebiten/v2"
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"github.com/hajimehoshi/ebiten/v2/ebitenutil"
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)
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type Game struct {
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images []*ebiten.Image
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err error
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m sync.Mutex
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}
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func (g *Game) Update() error {
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if err := func() error {
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g.m.Lock()
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defer g.m.Unlock()
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return g.err
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}(); err != nil {
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return err
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}
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if files := ebiten.DroppedFiles(); files != nil {
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go func() {
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if err := fs.WalkDir(files, ".", func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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fi, err := d.Info()
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if err != nil {
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return err
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}
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log.Printf("Name: %s, Size: %d, IsDir: %t, ModTime: %v", fi.Name(), fi.Size(), fi.IsDir(), fi.ModTime())
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f, err := files.Open(path)
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if err != nil {
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return err
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}
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defer func() {
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_ = f.Close()
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}()
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img, err := png.Decode(f)
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if err != nil {
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return nil
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}
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eimg := ebiten.NewImageFromImage(img)
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g.m.Lock()
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g.images = append(g.images, eimg)
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g.m.Unlock()
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return nil
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}); err != nil {
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g.m.Lock()
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if g.err == nil {
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g.err = err
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}
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g.m.Unlock()
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}
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}()
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}
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return nil
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}
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func (g *Game) Draw(screen *ebiten.Image) {
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g.m.Lock()
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defer g.m.Unlock()
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if len(g.images) == 0 {
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ebitenutil.DebugPrint(screen, "Drop PNG files onto this window!")
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return
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}
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const imageSize = 128
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xcount := screen.Bounds().Dx() / imageSize
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if xcount == 0 {
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return
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}
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for i, img := range g.images {
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x := (i % xcount) * imageSize
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y := (i / xcount) * imageSize
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s := imageSize / float64(img.Bounds().Dx())
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if sy := imageSize / float64(img.Bounds().Dy()); s > sy {
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s = sy
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}
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if s > 1 {
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s = 1
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}
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Scale(s, s)
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op.GeoM.Translate(float64(x), float64(y))
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op.Filter = ebiten.FilterLinear
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screen.DrawImage(img, op)
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}
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}
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func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
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return outsideWidth, outsideHeight
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}
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func main() {
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ebiten.SetWindowResizable(true)
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ebiten.SetWindowTitle("Dropping Files (Ebitengine Demo)")
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if err := ebiten.RunGame(&Game{}); err != nil {
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log.Fatal(err)
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}
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}
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