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Fix and rewrite contrast color calculation, fix project-related bugs (#30326)

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Backport https://github.com/go-gitea/gitea/pull/30237 to 1.22. Also
includes https://github.com/go-gitea/gitea/pull/30183. Both were clean
cherry-picks.

Co-authored-by: Giteabot <teabot@gitea.io>
This commit is contained in:
silverwind
2024-04-09 11:45:29 +02:00
committed by GitHub
parent 82992cf32d
commit b8e9d3c553
14 changed files with 148 additions and 203 deletions
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6
modules/templates/helper.go
View File

@@ -53,13 +53,13 @@ func NewFuncMap() template.FuncMap {
"JsonUtils": NewJsonUtils,
// -----------------------------------------------------------------
// svg / avatar / icon
// svg / avatar / icon / color
"svg": svg.RenderHTML,
"EntryIcon": base.EntryIcon,
"MigrationIcon": MigrationIcon,
"ActionIcon": ActionIcon,
"SortArrow": SortArrow,
"SortArrow": SortArrow,
"ContrastColor": util.ContrastColor,
// -----------------------------------------------------------------
// time / number / format

11
modules/templates/util_render.go
View File

@@ -123,16 +123,10 @@ func RenderIssueTitle(ctx context.Context, text string, metas map[string]string)
func RenderLabel(ctx context.Context, locale translation.Locale, label *issues_model.Label) template.HTML {
var (
archivedCSSClass string
textColor = "#111"
textColor = util.ContrastColor(label.Color)
labelScope = label.ExclusiveScope()
)
r, g, b := util.HexToRBGColor(label.Color)
// Determine if label text should be light or dark to be readable on background color
if util.UseLightTextOnBackground(r, g, b) {
textColor = "#eee"
}
description := emoji.ReplaceAliases(template.HTMLEscapeString(label.Description))
if label.IsArchived() {
@@ -153,7 +147,7 @@ func RenderLabel(ctx context.Context, locale translation.Locale, label *issues_m
// Make scope and item background colors slightly darker and lighter respectively.
// More contrast needed with higher luminance, empirically tweaked.
luminance := util.GetLuminance(r, g, b)
luminance := util.GetRelativeLuminance(label.Color)
contrast := 0.01 + luminance*0.03
// Ensure we add the same amount of contrast also near 0 and 1.
darken := contrast + math.Max(luminance+contrast-1.0, 0.0)
@@ -162,6 +156,7 @@ func RenderLabel(ctx context.Context, locale translation.Locale, label *issues_m
darkenFactor := math.Max(luminance-darken, 0.0) / math.Max(luminance, 1.0/255.0)
lightenFactor := math.Min(luminance+lighten, 1.0) / math.Max(luminance, 1.0/255.0)
r, g, b := util.HexToRBGColor(label.Color)
scopeBytes := []byte{
uint8(math.Min(math.Round(r*darkenFactor), 255)),
uint8(math.Min(math.Round(g*darkenFactor), 255)),