mirror of
https://github.com/gohugoio/hugo.git
synced 2026-08-24 15:28:54 +00:00
Bjørn Erik Pedersen
68 lines
2.2 KiB
Go
68 lines
2.2 KiB
Go
// Copyright 2025 The Hugo Authors. All rights reserved.
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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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// 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 himage provides some high level image types and interfaces.
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package himage
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import "image"
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// AnimatedImage represents an animated image.
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// This is currently supported for GIF and WebP images.
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type AnimatedImage interface {
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image.Image // The first frame.
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GetRaw() any // *gif.GIF or *WEBP.
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GetLoopCount() int // Number of times to loop the animation. 0 means infinite.
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ImageFrames
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}
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// ImageFrames provides access to the frames of an animated image.
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type ImageFrames interface {
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GetFrames() []image.Image
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// Frame durations in milliseconds.
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// Note that Gif frame durations are in 100ths of a second,
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// so they need to be multiplied by 10 to get milliseconds and vice versa.
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GetFrameDurations() []int
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SetFrames(frames []image.Image)
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SetWidthHeight(width, height int)
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}
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// ImageConfigProvider provides access to the image.Config of an image.
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type ImageConfigProvider interface {
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GetImageConfig() image.Config
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}
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// FrameDurationsToGifDelays converts frame durations in milliseconds to
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// GIF delays in 100ths of a second.
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func FrameDurationsToGifDelays(frameDurations []int) []int {
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delays := make([]int, len(frameDurations))
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for i, fd := range frameDurations {
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delays[i] = fd / 10
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if delays[i] == 0 && fd > 0 {
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delays[i] = 1
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}
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}
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return delays
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}
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// GifDelaysToFrameDurations converts GIF delays in 100ths of a second to
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// frame durations in milliseconds.
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func GifDelaysToFrameDurations(delays []int) []int {
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frameDurations := make([]int, len(delays))
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for i, d := range delays {
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frameDurations[i] = d * 10
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}
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return frameDurations
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}
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