Implement RGBstring_to_colorindex to simplify code (terencehill)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12743 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_draw.c b/gl_draw.c
index 26760ddfdc133248aa875058b0da33cf6d12e15e..8b800c2a98b828d6ad9c1183923d7390f064431e 100644 (file)
--- a/gl_draw.c
+++ b/gl_draw.c
@@ -884,16 +884,38 @@ static void DrawQ_GetTextColor(float color[4], int colorindex, float r, float g,
        }
 }
 
+// returns a colorindex (format 0x1RGBA) if str is a valid RGB string
+// returns 0 otherwise
+static int RGBstring_to_colorindex(const char *str)
+{
+       Uchar ch; 
+       int ind = 0x0001 << 4;
+       do {
+               if (*str <= '9' && *str >= '0')
+                       ind |= (*str - '0');
+               else
+               {
+                       ch = tolower(*str);
+                       if (ch >= 'a' && ch <= 'f')
+                               ind |= (ch - 87);
+                       else
+                               return 0;
+               }
+               ++str;
+               ind <<= 4;
+       } while(!(ind & 0x10000));
+       return ind | 0xf; // add costant alpha value
+}
+
 // NOTE: this function always draws exactly one character if maxwidth <= 0
 float DrawQ_TextWidth_UntilWidth_TrackColors_Scale(const char *text, size_t *maxlen, float w, float h, float sw, float sh, int *outcolor, qboolean ignorecolorcodes, const dp_font_t *fnt, float maxwidth)
 {
        const char *text_start = text;
-       int colorindex = STRING_COLOR_DEFAULT;
+       int colorindex;
        size_t i;
        float x = 0;
        Uchar ch, mapch, nextch;
        Uchar prevch = 0; // used for kerning
-       int tempcolorindex;
        float kx;
        int map_index = 0;
        size_t bytes_left;
@@ -940,7 +962,7 @@ float DrawQ_TextWidth_UntilWidth_TrackColors_Scale(const char *text, size_t *max
 
        // maxwidth /= fnt->scale; // w and h are multiplied by it already
        // ftbase_x = snap_to_pixel_x(0);
-       
+
        if(maxwidth <= 0)
        {
                least_one = true;
@@ -974,7 +996,6 @@ float DrawQ_TextWidth_UntilWidth_TrackColors_Scale(const char *text, size_t *max
                        x += width_of[(int) ' '] * dw;
                        continue;
                }
-               // i points to the char after ^
                if (ch == STRING_COLOR_TAG && !ignorecolorcodes && i < *maxlen)
                {
                        ch = *text; // colors are ascii, so no u8_ needed
@@ -985,41 +1006,19 @@ float DrawQ_TextWidth_UntilWidth_TrackColors_Scale(const char *text, size_t *max
                                ++i;
                                continue;
                        }
-                       // i points to the char after ^...
-                       // i+3 points to 3 in ^x123
-                       // i+3 == *maxlen would mean that char is missing
                        else if (ch == STRING_COLOR_RGB_TAG_CHAR && i + 3 < *maxlen ) // ^x found
                        {
-                               // building colorindex...
-                               ch = tolower(text[1]);
-                               tempcolorindex = 0x10000; // binary: 1,0000,0000,0000,0000
-                               if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 12;
-                               else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 12;
-                               else tempcolorindex = 0;
+                               const char *text_p = &text[1];
+                               int tempcolorindex = RGBstring_to_colorindex(text_p);
                                if (tempcolorindex)
                                {
-                                       ch = tolower(text[2]);
-                                       if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 8;
-                                       else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 8;
-                                       else tempcolorindex = 0;
-                                       if (tempcolorindex)
-                                       {
-                                               ch = tolower(text[3]);
-                                               if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 4;
-                                               else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 4;
-                                               else tempcolorindex = 0;
-                                               if (tempcolorindex)
-                                               {
-                                                       colorindex = tempcolorindex | 0xf;
-                                                       // ...done! now colorindex has rgba codes (1,rrrr,gggg,bbbb,aaaa)
-                                                       i+=4;
-                                                       text += 4;
-                                                       continue;
-                                               }
-                                       }
+                                       colorindex = tempcolorindex;
+                                       i+=4;
+                                       text += 4;
+                                       continue;
                                }
                        }
-                       else if (ch == STRING_COLOR_TAG) // ^^ found, ignore the first ^ and go to print the second
+                       else if (ch == STRING_COLOR_TAG) // ^^ found
                        {
                                i++;
                                text++;
@@ -1081,7 +1080,6 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
        float x = startx, y, s, t, u, v, thisw;
        Uchar ch, mapch, nextch;
        Uchar prevch = 0; // used for kerning
-       int tempcolorindex;
        int map_index = 0;
        //ft2_font_map_t *prevmap = NULL; // the previous map
        ft2_font_map_t *map = NULL;     // the currently used map
@@ -1195,35 +1193,15 @@ float DrawQ_String_Scale(float startx, float starty, const char *text, size_t ma
                                }
                                else if (ch == STRING_COLOR_RGB_TAG_CHAR && i+3 < maxlen ) // ^x found
                                {
-                                       // building colorindex...
-                                       ch = tolower(text[1]);
-                                       tempcolorindex = 0x10000; // binary: 1,0000,0000,0000,0000
-                                       if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 12;
-                                       else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 12;
-                                       else tempcolorindex = 0;
-                                       if (tempcolorindex)
+                                       const char *text_p = &text[1];
+                                       int tempcolorindex = RGBstring_to_colorindex(text_p);
+                                       if(tempcolorindex)
                                        {
-                                               ch = tolower(text[2]);
-                                               if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 8;
-                                               else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 8;
-                                               else tempcolorindex = 0;
-                                               if (tempcolorindex)
-                                               {
-                                                       ch = tolower(text[3]);
-                                                       if (ch <= '9' && ch >= '0') tempcolorindex |= (ch - '0') << 4;
-                                                       else if (ch >= 'a' && ch <= 'f') tempcolorindex |= (ch - 87) << 4;
-                                                       else tempcolorindex = 0;
-                                                       if (tempcolorindex)
-                                                       {
-                                                               colorindex = tempcolorindex | 0xf;
-                                                               // ...done! now colorindex has rgba codes (1,rrrr,gggg,bbbb,aaaa)
-                                                               //Con_Printf("^1colorindex:^7 %x\n", colorindex);
-                                                               DrawQ_GetTextColor(DrawQ_Color, colorindex, basered, basegreen, baseblue, basealpha, shadow != 0);
-                                                               i+=4;
-                                                               text+=4;
-                                                               continue;
-                                                       }
-                                               }
+                                               colorindex = tempcolorindex;
+                                               DrawQ_GetTextColor(DrawQ_Color, colorindex, basered, basegreen, baseblue, basealpha, shadow != 0);
+                                               i+=4;
+                                               text+=4;
+                                               continue;
                                        }
                                }
                                else if (ch == STRING_COLOR_TAG)
@@ -1337,7 +1315,7 @@ out:
 
        if (outcolor)
                *outcolor = colorindex;
-       
+
        // note: this relies on the proper text (not shadow) being drawn last
        return x;
 }

diff --git a/utf8lib.c b/utf8lib.c
index 4099d0a762ece3f4f189f2f8cb6b882415271fe8..c66f06e1787207d3763fb804371904103ad4eb85 100644 (file)
--- a/utf8lib.c
+++ b/utf8lib.c
@@ -231,20 +231,11 @@ static int colorcode_skipwidth(const unsigned char *s)
        if(*s == STRING_COLOR_TAG)
        {
                if(s[1] <= '9' && s[1] >= '0') // ^[0-9] found
-               {
                        return 2;
-               }
-               else if(s[1] == STRING_COLOR_RGB_TAG_CHAR &&
-                       ((s[2] >= '0' && s[2] <= '9') || (s[2] >= 'a' && s[2] <= 'f') || (s[2] >= 'A' && s[2] <= 'F')) &&
-                       ((s[3] >= '0' && s[3] <= '9') || (s[3] >= 'a' && s[3] <= 'f') || (s[3] >= 'A' && s[3] <= 'F')) &&
-                       ((s[4] >= '0' && s[4] <= '9') || (s[4] >= 'a' && s[4] <= 'f') || (s[4] >= 'A' && s[4] <= 'F')))
-               {
+               else if(s[1] == STRING_COLOR_RGB_TAG_CHAR && isxdigit(s[2]) && isxdigit(s[3]) && isxdigit(s[4]))
                        return 5;
-               }
                else if(s[1] == STRING_COLOR_TAG)
-               {
                        return 1; // special case, do NOT call colorcode_skipwidth for next char
-               }
        }
        return 0;
 }