mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 04:57:26 +01:00
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
// Copyright 2022 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 graphicscommand
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import (
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"bytes"
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"image"
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"path/filepath"
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"strconv"
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"strings"
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"syscall/js"
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"github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver"
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)
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func (i *Image) Dump(graphicsDriver graphicsdriver.Graphics, path string, blackbg bool, rect image.Rectangle) error {
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// Screen image cannot be dumped.
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if i.screen {
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return nil
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}
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path = strings.ReplaceAll(path, "*", strconv.Itoa(i.id))
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path = filepath.Base(path)
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global := js.Global()
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buf := &bytes.Buffer{}
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if err := i.dumpTo(buf, graphicsDriver, blackbg, rect); err != nil {
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return err
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}
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jsData := global.Get("Uint8Array").New(buf.Len())
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js.CopyBytesToJS(jsData, buf.Bytes())
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a := global.Get("document").Call("createElement", "a")
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blob := global.Get("Blob").New(
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[]interface{}{jsData},
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map[string]interface{}{"type": "image/png"},
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)
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a.Set("href", global.Get("URL").Call("createObjectURL", blob))
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a.Set("download", path)
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a.Call("click")
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return nil
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}
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