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the out-of-range behavior has been changed to the same as in CSS3

This commit is contained in:
bagomot 2023-04-24 12:12:00 +03:00
parent e4374d0a7e
commit 0320bdea6b
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GPG Key ID: F28BBD3A259717A8
1 changed files with 24 additions and 28 deletions
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52
src/dlangui/graphics/colors.d
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@ -25,6 +25,7 @@ import std.algorithm;
import std.traits;
import std.conv;
import std.range;
import dimage.jpeg;
/// special color constant to identify value as not a color (to use default/parent value instead)
immutable uint COLOR_UNSPECIFIED = 0xFFDEADFF;
@ -318,14 +319,14 @@ bool isFullyTransparentColor(uint color) pure nothrow {
/// decode color string supported formats: #RGB, #ARGB, #RRGGBB, #AARRGGBB, rgb(r,g,b), rgba(r,g,b,a), rgba(r,g,b,a%)
//TODO: the name doesn't match function
uint decodeHexColor(string s, uint defValue = 0) pure {
uint decodeHexColor(string s, uint defValue = 0) { //pure
s = s.strip.toLower;
if (s.empty)
return defValue;
if (s == "@null" || s == "transparent")
return COLOR_TRANSPARENT;
if (s.startsWith("#")) {
if (s.length == 4 || s.length == 5 || s.length == 7 || s.length == 9) { //#RGB #ARGB #RRGGBB #AARRGGBB
if (s.length.among(4, 5, 7, 9)) { //#RGB #ARGB #RRGGBB #AARRGGBB
s = s[1 .. $];
auto color = parse!uint(s, 16); //RGB(A) by default
if (s.length == 4)
@ -347,26 +348,22 @@ uint decodeHexColor(string s, uint defValue = 0) pure {
auto parts = s.split(",");
if (parts.length != 4)
return defValue;
uint r = to!uint(parts[0].strip);
uint g = to!uint(parts[1].strip);
uint b = to!uint(parts[2].strip);
if (r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255)
return defValue;
uint r = to!uint(parts[0].strip).clamp(0, 255);
uint g = to!uint(parts[1].strip).clamp(0, 255);
uint b = to!uint(parts[2].strip).clamp(0, 255);
uint a = 255;
auto ap = parts[3].strip;
if (ap.endsWith("%")) { //rgba(r,g,b,a%)
auto alpha = to!float(ap[0 .. $ - 1].strip);
if(alpha < 0 || alpha > 100)
return defValue;
a = cast(uint)((alpha * 255.0 / 100.0) + 0.5);
a = cast(uint)((alpha * 255.0 / 100.0) + 0.5).clamp(0, 255);
}
else { //rgba(r,g,b,a)
auto alpha = to!float(parts[3].strip);
if (alpha < 0 || alpha > 1)
return defValue;
a = cast(uint)(alpha * 255.0 + 0.5);
a = cast(uint)(alpha * 255.0 + 0.5).clamp(0, 255);
}
return (a << 24) | (r << 16) | (g << 8) | b;
if(a == 255)
return (r << 16) | (g << 8) | b;
return (a == 0) ? 0x00000000 : (a << 24) | (r << 16) | (g << 8) | b;
}
else if (s.startsWith("rgb(") && s.endsWith(")"))
{
@ -374,11 +371,9 @@ uint decodeHexColor(string s, uint defValue = 0) pure {
auto parts = s.split(",");
if (parts.length != 3)
return defValue;
uint r = to!uint(parts[0].strip);
uint g = to!uint(parts[1].strip);
uint b = to!uint(parts[2].strip);
if (r < 0 || r > 255 || g < 0 || g > 255 || b < 0 || b > 255)
return defValue;
uint r = to!uint(parts[0].strip).clamp(0, 255);
uint g = to!uint(parts[1].strip).clamp(0, 255);
uint b = to!uint(parts[2].strip).clamp(0, 255);
return (r << 16) | (g << 8) | b;
}
foreach (color; __traits(allMembers, Color))
@ -401,15 +396,16 @@ unittest
static assert(decodeHexColor("#80ff0000") == 0x80ff0000);
static assert(decodeHexColor("rgba(255, 0, 0,.5 )") == 0x80ff0000);
static assert(decodeHexColor("rgba(255,0, 0, 50%)") == 0x80ff0000);
static assert(decodeHexColor("rgba(255,0, 0, 100%)") == 0xffff0000);
static assert(decodeHexColor("rgba(255,0, 0, 0%)") == 0xff0000);
static assert(decodeHexColor("rgba(255,0, 0, 100%)") == 0xff0000);
static assert(decodeHexColor("rgba(255,0, 0, 0%)") == 0x00000000);
static assert(decodeHexColor("rgb(255,255, 255)") == 0xffffff);
static assert(decodeHexColor("rgba(255,0, 0, 150%)") == 0); // invalid input, return def value
static assert(decodeHexColor("rgba(255,0, 0, -34%)") == 0); // invalid input, return def value
static assert(decodeHexColor("rgb(321,321,321)") == 0); // invalid input, return def value
static assert(decodeHexColor("not_valid_color_name") == 0); // invalid input, return def value
static assert(decodeHexColor("#80ff00000") == 0); // invalid input, return def value
static assert(decodeHexColor("#f0") == 0); // invalid input, return def value
static assert(decodeHexColor("rgba(255,255, 255, 10)") == 0); // invalid input, return def value
static assert(decodeHexColor("rgba(255,0, 0, 150%)") == 0xff0000); // invalid input
static assert(decodeHexColor("rgba(255,0, 0, -34%)") == 0x00000000); // invalid input
static assert(decodeHexColor("rgb(321,321,321)") == 0xffffff); // invalid input
static assert(decodeHexColor("not_valid_color_name") == 0x00000000); // invalid input, return def value
static assert(decodeHexColor("#80ff00000") == 0x000000000); // invalid input, return def value
static assert(decodeHexColor("#f0") == 0x00000000); // invalid input, return def value
static assert(decodeHexColor("rgba(255,255, 255, 10)") == 0xffffff); // invalid input
static assert(decodeHexColor("rgba(444,0, 0, -5)") == 0x00000000); // invalid input
}