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Code Issues Releases Wiki Activity

Prevent (copied) light text on dark background (composer)

This commit is contained in:
M66B 2021-11-07 19:35:10 +01:00
parent bb2fd9a3b8
commit 8a4be7cf61
1 changed files with 3 additions and 2 deletions
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5
app/src/main/java/eu/faircode/email/HtmlHelper.java
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@ -140,6 +140,7 @@ public class HtmlHelper {
private static final int GRAY_THRESHOLD = Math.round(255 * 0.2f); private static final int GRAY_THRESHOLD = Math.round(255 * 0.2f);
private static final int COLOR_THRESHOLD = Math.round(255 * 0.1f); private static final int COLOR_THRESHOLD = Math.round(255 * 0.1f);
private static final float MIN_LUMINANCE = 0.7f; private static final float MIN_LUMINANCE = 0.7f;
private static final float MIN_LUMINANCE_DARK = 0.1f;
private static final int TAB_SIZE = 2; private static final int TAB_SIZE = 2;
private static final int MAX_ALT = 250; private static final int MAX_ALT = 250;
private static final int MAX_AUTO_LINK = 250; private static final int MAX_AUTO_LINK = 250;
@ -645,10 +646,10 @@ public class HtmlHelper {
if (bg == null) { if (bg == null) {
// Special case: // Special case:
// external draft / dark background / dark font // external draft / dark background / very dark/light font
if (color != null && !view && dark) { if (color != null && !view && dark) {
double lum = ColorUtils.calculateLuminance(color); double lum = ColorUtils.calculateLuminance(color);
if (lum < 0.1) if (lum < MIN_LUMINANCE_DARK || lum > 1 - MIN_LUMINANCE_DARK)
color = null; color = null;
} }