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ADDED: Auxiliar function for standalone mode

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Ray 2021-09-11 10:37:06 +02:00
parent 653ee23f58
commit 469496d177
1 changed files with 117 additions and 5 deletions
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118
src/raygui.h
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@ -1253,6 +1253,9 @@ static const char **GuiTextSplit(const char *text, int *count, int *textRow);
static Vector3 ConvertHSVtoRGB(Vector3 hsv); // Convert color data from HSV to RGB
static Vector3 ConvertRGBtoHSV(Vector3 rgb); // Convert color data from RGB to HSV
static const char *CodepointToUTF8(int codepoint, int *byteSize); // Encode codepoint into UTF-8 text (char array size returned as parameter)
static int GetCodepoint(const char *text, int *bytesProcessed); // Get next codepoint in a UTF-8 encoded text
//----------------------------------------------------------------------------------
// Gui Setup Functions Definition
//----------------------------------------------------------------------------------
@ -2936,6 +2939,9 @@ int GuiListViewEx(Rectangle bounds, const char **text, int count, int *focus, in
// Color Panel control
Color GuiColorPanel(Rectangle bounds, Color color)
{
const Color colWhite = { 255, 255, 255, 255 };
const Color colBlack = { 0, 0, 0, 255 };
GuiControlState state = guiState;
Vector2 pickerSelector = { 0 };
@ -2952,9 +2958,6 @@ Color GuiColorPanel(Rectangle bounds, Color color)
(unsigned char)(255.0f*rgbHue.y),
(unsigned char)(255.0f*rgbHue.z), 255 };
const Color colWhite = { 255, 255, 255, 255 };
const Color colBlack = { 0, 0, 0, 255 };
// Update control
//--------------------------------------------------------------------
if ((state != GUI_STATE_DISABLED) && !guiLocked)
@ -4302,6 +4305,115 @@ static const char *CodepointToUTF8(int codepoint, int *byteSize)
return utf8;
}
// Get next codepoint in a UTF-8 encoded text, scanning until '\0' is found
// When a invalid UTF-8 byte is encountered we exit as soon as possible and a '?'(0x3f) codepoint is returned
// Total number of bytes processed are returned as a parameter
// NOTE: the standard says U+FFFD should be returned in case of errors
// but that character is not supported by the default font in raylib
// TODO: Optimize this code for speed!!
static int GetCodepoint(const char *text, int *bytesProcessed)
{
/*
UTF-8 specs from https://www.ietf.org/rfc/rfc3629.txt
Char. number range | UTF-8 octet sequence
(hexadecimal) | (binary)
--------------------+---------------------------------------------
0000 0000-0000 007F | 0xxxxxxx
0000 0080-0000 07FF | 110xxxxx 10xxxxxx
0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx
0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
*/
// NOTE: on decode errors we return as soon as possible
int code = 0x3f; // Codepoint (defaults to '?')
int octet = (unsigned char)(text[0]); // The first UTF8 octet
*bytesProcessed = 1;
if (octet <= 0x7f)
{
// Only one octet (ASCII range x00-7F)
code = text[0];
}
else if ((octet & 0xe0) == 0xc0)
{
// Two octets
// [0]xC2-DF [1]UTF8-tail(x80-BF)
unsigned char octet1 = text[1];
if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence
if ((octet >= 0xc2) && (octet <= 0xdf))
{
code = ((octet & 0x1f) << 6) | (octet1 & 0x3f);
*bytesProcessed = 2;
}
}
else if ((octet & 0xf0) == 0xe0)
{
// Three octets
unsigned char octet1 = text[1];
unsigned char octet2 = '\0';
if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence
octet2 = text[2];
if ((octet2 == '\0') || ((octet2 >> 6) != 2)) { *bytesProcessed = 3; return code; } // Unexpected sequence
// [0]xE0 [1]xA0-BF [2]UTF8-tail(x80-BF)
// [0]xE1-EC [1]UTF8-tail [2]UTF8-tail(x80-BF)
// [0]xED [1]x80-9F [2]UTF8-tail(x80-BF)
// [0]xEE-EF [1]UTF8-tail [2]UTF8-tail(x80-BF)
if (((octet == 0xe0) && !((octet1 >= 0xa0) && (octet1 <= 0xbf))) ||
((octet == 0xed) && !((octet1 >= 0x80) && (octet1 <= 0x9f)))) { *bytesProcessed = 2; return code; }
if ((octet >= 0xe0) && (0 <= 0xef))
{
code = ((octet & 0xf) << 12) | ((octet1 & 0x3f) << 6) | (octet2 & 0x3f);
*bytesProcessed = 3;
}
}
else if ((octet & 0xf8) == 0xf0)
{
// Four octets
if (octet > 0xf4) return code;
unsigned char octet1 = text[1];
unsigned char octet2 = '\0';
unsigned char octet3 = '\0';
if ((octet1 == '\0') || ((octet1 >> 6) != 2)) { *bytesProcessed = 2; return code; } // Unexpected sequence
octet2 = text[2];
if ((octet2 == '\0') || ((octet2 >> 6) != 2)) { *bytesProcessed = 3; return code; } // Unexpected sequence
octet3 = text[3];
if ((octet3 == '\0') || ((octet3 >> 6) != 2)) { *bytesProcessed = 4; return code; } // Unexpected sequence
// [0]xF0 [1]x90-BF [2]UTF8-tail [3]UTF8-tail
// [0]xF1-F3 [1]UTF8-tail [2]UTF8-tail [3]UTF8-tail
// [0]xF4 [1]x80-8F [2]UTF8-tail [3]UTF8-tail
if (((octet == 0xf0) && !((octet1 >= 0x90) && (octet1 <= 0xbf))) ||
((octet == 0xf4) && !((octet1 >= 0x80) && (octet1 <= 0x8f)))) { *bytesProcessed = 2; return code; } // Unexpected sequence
if (octet >= 0xf0)
{
code = ((octet & 0x7) << 18) | ((octet1 & 0x3f) << 12) | ((octet2 & 0x3f) << 6) | (octet3 & 0x3f);
*bytesProcessed = 4;
}
}
if (code > 0x10ffff) code = 0x3f; // Codepoints after U+10ffff are invalid
return code;
}
#endif // RAYGUI_STANDALONE
#endif // RAYGUI_IMPLEMENTATION