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thumbnails.go
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thumbnails.go
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/*
* Copyright (C) 2014 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package thumbnails
import (
"fmt"
_ "pkg.deepin.io/dde/api/thumbnails/cursor"
_ "pkg.deepin.io/dde/api/thumbnails/font"
_ "pkg.deepin.io/dde/api/thumbnails/gtk"
_ "pkg.deepin.io/dde/api/thumbnails/icon"
_ "pkg.deepin.io/dde/api/thumbnails/images"
"pkg.deepin.io/dde/api/thumbnails/loader"
_ "pkg.deepin.io/dde/api/thumbnails/pdf"
_ "pkg.deepin.io/dde/api/thumbnails/text"
"pkg.deepin.io/lib/mime"
)
func GenThumbnail(uri string, size int) (string, error) {
if size < 0 {
return "", fmt.Errorf("Invalid size: '%v'", size)
}
ty, err := mime.Query(uri)
if err != nil {
return "", err
}
size = correctSize(size)
return GenThumbnailWithMime(uri, ty, size)
}
func GenThumbnailWithMime(uri, ty string, size int) (string, error) {
if size < 0 {
return "", fmt.Errorf("Invalid size: '%v'", size)
}
handler, err := loader.GetHandler(ty)
if err != nil {
return "", err
}
size = correctSize(size)
return handler(uri, "", size, size, false)
}
func correctSize(size int) int {
if size < loader.SizeFlagNormal {
return loader.SizeFlagSmall
} else if size >= loader.SizeFlagLarge {
return loader.SizeFlagLarge
} else {
return loader.SizeFlagNormal
}
}