123 lines
4.1 KiB
Go
123 lines
4.1 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public Licensee as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public Licensee for more details.
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//
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// You should have received a copy of the GNU Affero General Public Licensee
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package marble
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import (
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"math"
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"strconv"
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"code.vikunja.io/api/pkg/user"
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)
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// Provider generates a random avatar based on https://github.com/boringdesigners/boring-avatars
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type Provider struct {
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}
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const avatarSize = 80
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var colors = []string{
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"#A3A948",
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"#EDB92E",
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"#F85931",
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"#CE1836",
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"#009989",
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}
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type props struct {
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Color string
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TranslateX int
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TranslateY int
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Rotate int
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Scale float64
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}
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func getUnit(number int, rang, index int) int {
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value := number % rang
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digit := math.Floor(math.Mod(float64(number)/math.Pow(10, float64(index)), 10))
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if index > 0 && (math.Mod(digit, 2) == 0) {
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return -value
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}
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return value
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}
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func getPropsForUser(u *user.User) []*props {
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ps := []*props{}
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for i := 0; i < 3; i++ {
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f := float64(getUnit(int(u.ID)*(i+1), avatarSize/10, 0))
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ps = append(ps, &props{
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Color: colors[(int(u.ID)+i)%(len(colors)-1)],
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TranslateX: getUnit(int(u.ID)*(i+1), avatarSize/10, 1),
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TranslateY: getUnit(int(u.ID)*(i+1), avatarSize/10, 2),
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Scale: 1.2 + f/10,
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Rotate: getUnit(int(u.ID)*(i+1), 360, 1),
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})
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}
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return ps
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}
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func (p *Provider) GetAvatar(u *user.User, size int64) (avatar []byte, mimeType string, err error) {
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s := strconv.FormatInt(size, 10)
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avatarSizeStr := strconv.Itoa(avatarSize)
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avatarSizeHalf := strconv.Itoa(avatarSize / 2)
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ps := getPropsForUser(u)
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return []byte(`<svg
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viewBox="0 0 ` + avatarSizeStr + ` ` + avatarSizeStr + `"
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fill="none"
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xmlns="http://www.w3.org/2000/svg"
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width="` + s + `"
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height="` + s + `"
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>
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<mask id="mask__marble" maskUnits="userSpaceOnUse" x="0" y="0" width="` + avatarSizeStr + `" height="` + avatarSizeStr + `">
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<rect width="` + avatarSizeStr + `" height="` + avatarSizeStr + `" rx="` + strconv.Itoa(avatarSize*2) + `" fill="white" />
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</mask>
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<g mask="url(#mask__marble)">
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<rect width="` + avatarSizeStr + `" height="` + avatarSizeStr + `" rx="2" fill="` + ps[0].Color + `" />
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<path
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filter="url(#prefix__filter0_f)"
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d="M32.414 59.35L50.376 70.5H72.5v-71H33.728L26.5 13.381l19.057 27.08L32.414 59.35z"
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fill="` + ps[1].Color + `"
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transform="translate(` + strconv.Itoa(ps[1].TranslateX) + ` ` + strconv.Itoa(ps[1].TranslateY) + `) rotate(` + strconv.Itoa(ps[1].Rotate) + ` ` + avatarSizeHalf + ` ` + avatarSizeHalf + `) scale(` + strconv.FormatFloat(ps[2].Scale, 'f', 2, 64) + `)"
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/>
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<path
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filter="url(#prefix__filter0_f)"
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style="mix-blend-mode: overlay;"
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d="M22.216 24L0 46.75l14.108 38.129L78 86l-3.081-59.276-22.378 4.005 12.972 20.186-23.35 27.395L22.215 24z"
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fill="` + ps[2].Color + `"
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transform="translate(` + strconv.Itoa(ps[2].TranslateX) + ` ` + strconv.Itoa(ps[2].TranslateY) + `) rotate(` + strconv.Itoa(ps[2].Rotate) + ` ` + avatarSizeHalf + ` ` + avatarSizeHalf + `) scale(` + strconv.FormatFloat(ps[2].Scale, 'f', 2, 64) + `)"
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/>
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</g>
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<defs>
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<filter
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id="prefix__filter0_f"
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filterUnits="userSpaceOnUse"
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colorInterpolationFilters="sRGB"
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>
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<feFlood flood-opacity="0" result="BackgroundImageFix" />
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<feBlend in="SourceGraphic" in2="BackgroundImageFix" result="shape" />
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<feGaussianBlur stdDeviation="7" result="effect1_foregroundBlur" />
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</filter>
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</defs>
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</svg>`), "image/svg+xml", nil
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}
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