/* -*- Mode: C; indent-tabs-mode:nil; c-basic-offset: 8-*- */ /* * This file is part of The Croco Library * * This program is free software; you can redistribute it and/or * modify it under the terms of version 2.1 of the GNU General Public * License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA * * Author: Dodji Seketeli * See COPYRIGHTS file for copyrights information. */ #include #include #include #include "cr-rgb.h" #include "cr-term.h" #include "cr-parser.h" static CRRgb gv_standard_colors[] = { {"aliceblue", 240, 248, 255, 0,}, {"antiquewhite", 250, 235, 215, 0}, {"aqua", 0, 255, 255, 0}, {"aquamarine", 127, 255, 212, 0}, {"azure", 240, 255, 255, 0}, {"beige", 245, 245, 220, 0}, {"bisque", 255, 228, 196, 0}, {"black", 0, 0, 0, 0}, {"blanchedalmond", 255, 235, 205, 0}, {"blue", 0, 0, 255, 0}, {"blueviolet", 138, 43, 226, 0}, {"brown", 165, 42, 42, 0}, {"burlywood", 222, 184, 135, 0}, {"cadetblue", 95, 158, 160, 0}, {"chartreuse", 127, 255, 0, 0}, {"chocolate", 210, 105, 30, 0}, {"coral", 255, 127, 80, 0}, {"cornflowerblue", 100, 149, 237, 0}, {"cornsilk", 255, 248, 220, 0}, {"crimson", 220, 20, 60, 0}, {"cyan", 0, 255, 255, 0}, {"darkblue", 0, 0, 139, 0}, {"darkcyan", 0, 139, 139, 0}, {"darkgoldenrod", 184, 134, 11, 0}, {"darkgray", 169, 169, 169, 0}, {"darkgreen", 0, 100, 0, 0}, {"darkgrey", 169, 169, 169, 0}, {"darkkhaki", 189, 183, 107, 0}, {"darkmagenta", 139, 0, 139, 0}, {"darkolivegreen", 85, 107, 47, 0}, {"darkorange", 255, 140, 0, 0}, {"darkorchid", 153, 50, 204, 0}, {"darkred", 139, 0, 0, 0}, {"darksalmon", 233, 150, 122, 0}, {"darkseagreen", 143, 188, 143, 0}, {"darkslateblue", 72, 61, 139, 0}, {"darkslategray", 47, 79, 79, 0}, {"darkslategrey", 47, 79, 79, 0}, {"darkturquoise", 0, 206, 209, 0}, {"darkviolet", 148, 0, 211, 0}, {"deeppink", 255, 20, 147, 0}, {"deepskyblue", 0, 191, 255, 0}, {"dimgray", 105, 105, 105, 0}, {"dimgrey", 105, 105, 105, 0}, {"dodgerblue", 30, 144, 255, 0}, {"firebrick", 178, 34, 34, 0}, {"floralwhite", 255, 250, 240, 0}, {"forestgreen", 34, 139, 34, 0}, {"fuchsia", 255, 0, 255, 0}, {"gainsboro", 220, 220, 220, 0}, {"ghostwhite", 248, 248, 255, 0}, {"gold", 255, 215, 0, 0}, {"goldenrod", 218, 165, 32, 0}, {"gray", 128, 128, 128, 0}, {"grey", 128, 128, 128, 0}, {"green", 0, 128, 0, 0}, {"greenyellow", 173, 255, 47, 0}, {"honeydew", 240, 255, 240, 0}, {"hotpink", 255, 105, 180, 0}, {"indianred", 205, 92, 92, 0}, {"indigo", 75, 0, 130, 0}, {"ivory", 255, 255, 240, 0}, {"khaki", 240, 230, 140, 0}, {"lavender", 230, 230, 250, 0}, {"lavenderblush", 255, 240, 245, 0}, {"lawngreen", 124, 252, 0, 0}, {"lemonchiffon", 255, 250, 205, 0}, {"lightblue", 173, 216, 230, 0}, {"lightcoral", 240, 128, 128, 0}, {"lightcyan", 224, 255, 255, 0}, {"lightgoldenrodyellow", 250, 250, 210, 0}, {"lightgray", 211, 211, 211, 0}, {"lightgreen", 144, 238, 144, 0}, {"lightgrey", 211, 211, 211, 0}, {"lightpink", 255, 182, 193, 0}, {"lightsalmon", 255, 160, 122, 0}, {"lightseagreen", 32, 178, 170, 0}, {"lightskyblue", 135, 206, 250, 0}, {"lightslategray", 119, 136, 153, 0}, {"lightslategrey", 119, 136, 153, 0}, {"lightsteelblue", 176, 196, 222, 0}, {"lightyellow", 255, 255, 224, 0}, {"lime", 0, 255, 0, 0}, {"limegreen", 50, 205, 50, 0}, {"linen", 250, 240, 230, 0}, {"magenta", 255, 0, 255, 0}, {"maroon", 128, 0, 0, 0}, {"mediumaquamarine", 102, 205, 170, 0}, {"mediumblue", 0, 0, 205, 0}, {"mediumorchid", 186, 85, 211, 0}, {"mediumpurple", 147, 112, 219, 0}, {"mediumseagreen", 60, 179, 113, 0}, {"mediumslateblue", 123, 104, 238, 0}, {"mediumspringgreen", 0, 250, 154, 0}, {"mediumturquoise", 72, 209, 204, 0}, {"mediumvioletred", 199, 21, 133, 0}, {"midnightblue", 25, 25, 112, 0}, {"mintcream", 245, 255, 250, 0}, {"mistyrose", 255, 228, 225, 0}, {"moccasin", 255, 228, 181, 0}, {"navajowhite", 255, 222, 173, 0}, {"navy", 0, 0, 128, 0}, {"oldlace", 253, 245, 230, 0}, {"olive", 128, 128, 0, 0}, {"olivedrab", 107, 142, 35, 0}, {"orange", 255, 165, 0, 0}, {"orangered", 255, 69, 0, 0}, {"orchid", 218, 112, 214, 0}, {"palegoldenrod", 238, 232, 170, 0}, {"palegreen", 152, 251, 152, 0}, {"paleturquoise", 175, 238, 238, 0}, {"palevioletred", 219, 112, 147, 0}, {"papayawhip", 255, 239, 213, 0}, {"peachpuff", 255, 218, 185, 0}, {"peru", 205, 133, 63, 0}, {"pink", 255, 192, 203, 0}, {"plum", 221, 160, 221, 0}, {"powderblue", 176, 224, 230, 0}, {"purple", 128, 0, 128, 0}, {"red", 255, 0, 0, 0}, {"rosybrown", 188, 143, 143, 0}, {"royalblue", 65, 105, 225, 0}, {"saddlebrown", 139, 69, 19, 0}, {"salmon", 250, 128, 114, 0}, {"sandybrown", 244, 164, 96, 0}, {"seagreen", 46, 139, 87, 0}, {"seashell", 255, 245, 238, 0}, {"sienna", 160, 82, 45, 0}, {"silver", 192, 192, 192, 0}, {"skyblue", 135, 206, 235, 0}, {"slateblue", 106, 90, 205, 0}, {"slategray", 112, 128, 144, 0}, {"slategrey", 112, 128, 144, 0}, {"snow", 255, 250, 250, 0}, {"springgreen", 0, 255, 127, 0}, {"steelblue", 70, 130, 180, 0}, {"tan", 210, 180, 140, 0}, {"teal", 0, 128, 128, 0}, {"thistle", 216, 191, 216, 0}, {"tomato", 255, 99, 71, 0}, {"turquoise", 64, 224, 208, 0}, {"violet", 238, 130, 238, 0}, {"wheat", 245, 222, 179, 0}, {"white", 255, 255, 255, 0}, {"whitesmoke", 245, 245, 245, 0,}, {"yellow", 255, 255, 0, 0,}, {"yellowgreen", 154, 205, 50, 0,}, {"transparent", 255, 255, 255, 0, 0, 1} }; /** * cr_rgb_new: * *The default constructor of #CRRgb. * *Returns the newly built instance of #CRRgb */ CRRgb * cr_rgb_new (void) { CRRgb *result = NULL; result = g_try_malloc (sizeof (CRRgb)); if (result == NULL) { cr_utils_trace_info ("No more memory"); return NULL; } memset (result, 0, sizeof (CRRgb)); return result; } /** * cr_rgb_new_with_vals: *@a_red: the red component of the color. *@a_green: the green component of the color. *@a_blue: the blue component of the color. *@a_unit: the unit of the rgb values. *(either percentage or integer values) * *A constructor of #CRRgb. * *Returns the newly built instance of #CRRgb. */ CRRgb * cr_rgb_new_with_vals (gulong a_red, gulong a_green, gulong a_blue, gboolean a_is_percentage) { CRRgb *result = NULL; result = cr_rgb_new (); g_return_val_if_fail (result, NULL); result->red = a_red; result->green = a_green; result->blue = a_blue; result->is_percentage = a_is_percentage; return result; } /** * cr_rgb_to_string: *@a_this: the instance of #CRRgb to serialize. * *Serializes the rgb into a zero terminated string. * *Returns the zero terminated string containing the serialized *rgb. MUST BE FREED by the caller using g_free(). */ guchar * cr_rgb_to_string (CRRgb * a_this) { guchar *result = NULL; GString *str_buf = NULL; str_buf = g_string_new (NULL); g_return_val_if_fail (str_buf, NULL); if (a_this->is_percentage == 1) { g_string_append_printf (str_buf, "%ld", a_this->red); g_string_append (str_buf, "%, "); g_string_append_printf (str_buf, "%ld", a_this->green); g_string_append (str_buf, "%, "); g_string_append_printf (str_buf, "%ld", a_this->blue); g_string_append_c (str_buf, '%'); } else { g_string_append_printf (str_buf, "%ld", a_this->red); g_string_append (str_buf, ", "); g_string_append_printf (str_buf, "%ld", a_this->green); g_string_append (str_buf, ", "); g_string_append_printf (str_buf, "%ld", a_this->blue); } if (str_buf) { result = str_buf->str; g_string_free (str_buf, FALSE); } return result; } /** * cr_rgb_dump: *@a_this: the "this pointer" of *the current instance of #CRRgb. *@a_fp: the destination file pointer. * *Dumps the current instance of #CRRgb *to a file. */ void cr_rgb_dump (CRRgb * a_this, FILE * a_fp) { guchar *str = NULL; g_return_if_fail (a_this); str = cr_rgb_to_string (a_this); if (str) { fprintf (a_fp, "%s", str); g_free (str); str = NULL; } } /** * cr_rgb_compute_from_percentage: *@a_this: the current instance of #CRRgb * *If the rgb values are expressed in percentage, *compute their real value. * *Returns CR_OK upon successful completion, an error code otherwise. */ enum CRStatus cr_rgb_compute_from_percentage (CRRgb * a_this) { g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); if (a_this->is_percentage == FALSE) return CR_OK; a_this->red = a_this->red * 255 / 100; a_this->green = a_this->green * 255 / 100; a_this->blue = a_this->blue * 255 / 100; a_this->is_percentage = FALSE; return CR_OK; } /** * cr_rgb_set: *@a_this: the current instance of #CRRgb. *@a_red: the red value. *@a_green: the green value. *@a_blue: the blue value. * *Sets rgb values to the RGB. * *Returns CR_OK upon successful completion, an error code *otherwise. */ enum CRStatus cr_rgb_set (CRRgb * a_this, gulong a_red, gulong a_green, gulong a_blue, gboolean a_is_percentage) { g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR); if (a_is_percentage != FALSE) { g_return_val_if_fail (a_red <= 100 && a_green <= 100 && a_blue <= 100, CR_BAD_PARAM_ERROR); } a_this->is_percentage = a_is_percentage; a_this->red = a_red; a_this->green = a_green; a_this->blue = a_blue; a_this->inherit = FALSE ; a_this->is_transparent = FALSE ; return CR_OK; } /** * cr_rgb_set_to_inherit: *@a_this: the current instance of #CRRgb * *sets the value of the rgb to inherit. *Look at the css spec from chapter 6.1 to 6.2 to understand *the meaning of "inherit". * * Returns CR_OK upon succesful completion, an error code otherwise. */ enum CRStatus cr_rgb_set_to_inherit (CRRgb *a_this, gboolean a_inherit) { g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; a_this->inherit = a_inherit ; return CR_OK ; } /** * cr_rgb_is_set_to_inherit: * * @a_this: the current instance of #CRRgb. * * Returns TRUE if the rgb is set to the value "inherit", FALSE otherwise. */ gboolean cr_rgb_is_set_to_inherit (CRRgb *a_this) { g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; return a_this->inherit ; } /** * cr_rgb_is_set_to_transparent: *@a_this: the current instance of *#CRRgb * *Tests if the the rgb is set to the *value "transparent" or not. * *Returns TRUE if the rgb has been set to *transparent, FALSE otherwise. */ gboolean cr_rgb_is_set_to_transparent (CRRgb *a_this) { g_return_val_if_fail (a_this, FALSE) ; return a_this->is_transparent ; } /** * cr_rgb_set_to_transparent: *@a_this: the current instance of #CRRgb *@a_is_transparent: set to transparent or not. * *Sets the rgb to the "transparent" value (or not) *Returns CR_OK upon successfull completion, an error code otherwise. */ enum CRStatus cr_rgb_set_to_transparent (CRRgb *a_this, gboolean a_is_transparent) { g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ; a_this->is_transparent = a_is_transparent ; return CR_OK ; } /** * cr_rgb_set_from_rgb: *@a_this: the current instance of #CRRgb. *@a_rgb: the rgb to "copy" * *Sets the rgb from an other one. * *Returns CR_OK upon successful completion, an error code otherwise. */ enum CRStatus cr_rgb_set_from_rgb (CRRgb * a_this, CRRgb * a_rgb) { g_return_val_if_fail (a_this && a_rgb, CR_BAD_PARAM_ERROR); cr_rgb_copy (a_this, a_rgb) ; return CR_OK; } /** * cr_rgb_set_from_name: * @a_this: the current instance of #CRRgb * @a_color_name: the color name * * Returns CR_OK upon successful completion, an error code otherwise. */ enum CRStatus cr_rgb_set_from_name (CRRgb * a_this, const guchar * a_color_name) { gulong i = 0; enum CRStatus status = CR_OK; g_return_val_if_fail (a_this && a_color_name, CR_BAD_PARAM_ERROR); for (i = 0; i < sizeof (gv_standard_colors); i++) { if (!strcmp (a_color_name, gv_standard_colors[i].name)) { cr_rgb_set_from_rgb (a_this, &gv_standard_colors[i]); break; } } if (i < sizeof (gv_standard_colors)) status = CR_OK; else status = CR_UNKNOWN_TYPE_ERROR; return status; } /** * cr_rgb_set_from_hex_str: * @a_this: the current instance of #CRRgb * @a_hex: the hexadecimal value to set. * * Returns CR_OK upon successful completion. */ enum CRStatus cr_rgb_set_from_hex_str (CRRgb * a_this, const guchar * a_hex) { enum CRStatus status = CR_OK; gulong i = 0; guchar colors[3] = { 0 }; g_return_val_if_fail (a_this && a_hex, CR_BAD_PARAM_ERROR); if (strlen (a_hex) == 3) { for (i = 0; i < 3; i++) { if (a_hex[i] >= '0' && a_hex[i] <= '9') { colors[i] = a_hex[i] - '0'; colors[i] = (colors[i] << 4) | colors[i]; } else if (a_hex[i] >= 'a' && a_hex[i] <= 'z') { colors[i] = 10 + a_hex[i] - 'a'; colors[i] = (colors[i] << 4) | colors[i]; } else if (a_hex[i] >= 'A' && a_hex[i] <= 'Z') { colors[i] = 10 + a_hex[i] - 'A'; colors[i] = (colors[i] << 4) | colors[i]; } else { status = CR_UNKNOWN_TYPE_ERROR; } } } else if (strlen (a_hex) == 6) { for (i = 0; i < 6; i++) { if (a_hex[i] >= '0' && a_hex[i] <= '9') { colors[i / 2] <<= 4; colors[i / 2] |= a_hex[i] - '0'; status = CR_OK; } else if (a_hex[i] >= 'a' && a_hex[i] <= 'z') { colors[i / 2] <<= 4; colors[i / 2] |= 10 + a_hex[i] - 'a'; status = CR_OK; } else if (a_hex[i] >= 'A' && a_hex[i] <= 'Z') { colors[i / 2] <<= 4; colors[i / 2] |= 10 + a_hex[i] - 'A'; status = CR_OK; } else { status = CR_UNKNOWN_TYPE_ERROR; } } } else { status = CR_UNKNOWN_TYPE_ERROR; } if (status == CR_OK) { status = cr_rgb_set (a_this, colors[0], colors[1], colors[2], FALSE); cr_rgb_set_to_transparent (a_this, FALSE) ; } return status; } /** * cr_rgb_set_from_term: *@a_this: the instance of #CRRgb to set *@a_value: the terminal from which to set * *Set the rgb from a terminal symbol * * Returns CR_OK upon successful completion, an error code otherwise. */ enum CRStatus cr_rgb_set_from_term (CRRgb *a_this, const struct _CRTerm *a_value) { enum CRStatus status = CR_OK ; g_return_val_if_fail (a_this && a_value, CR_BAD_PARAM_ERROR) ; switch(a_value->type) { case TERM_RGB: if (a_value->content.rgb) { cr_rgb_set_from_rgb (a_this, a_value->content.rgb) ; } break ; case TERM_IDENT: if (a_value->content.str && a_value->content.str->stryng && a_value->content.str->stryng->str) { if (!strncmp ("inherit", a_value->content.str->stryng->str, sizeof ("inherit")-1)) { a_this->inherit = TRUE; a_this->is_transparent = FALSE ; } else { status = cr_rgb_set_from_name (a_this, a_value->content.str->stryng->str) ; } } else { cr_utils_trace_info ("a_value has NULL string value") ; } break ; case TERM_HASH: if (a_value->content.str && a_value->content.str->stryng && a_value->content.str->stryng->str) { status = cr_rgb_set_from_hex_str (a_this, a_value->content.str->stryng->str) ; } else { cr_utils_trace_info ("a_value has NULL string value") ; } break ; default: status = CR_UNKNOWN_TYPE_ERROR ; } return status ; } enum CRStatus cr_rgb_copy (CRRgb *a_dest, CRRgb*a_src) { g_return_val_if_fail (a_dest && a_src, CR_BAD_PARAM_ERROR) ; memcpy (a_dest, a_src, sizeof (CRRgb)) ; return CR_OK ; } /** * cr_rgb_destroy: *@a_this: the "this pointer" of the *current instance of #CRRgb. * *Destructor of #CRRgb. */ void cr_rgb_destroy (CRRgb * a_this) { g_return_if_fail (a_this); g_free (a_this); } /** * cr_rgb_parse_from_buf: *@a_str: a string that contains a color description *@a_enc: the encoding of a_str * *Parses a text buffer that contains a rgb color * *Returns the parsed color, or NULL in case of error */ CRRgb * cr_rgb_parse_from_buf (const guchar *a_str, enum CREncoding a_enc) { enum CRStatus status = CR_OK ; CRTerm *value = NULL ; CRParser * parser = NULL; CRRgb *result = NULL; g_return_val_if_fail (a_str, NULL); parser = cr_parser_new_from_buf ((guchar*)a_str, strlen (a_str), a_enc, FALSE) ; g_return_val_if_fail (parser, NULL); status = cr_parser_try_to_skip_spaces_and_comments (parser) ; if (status != CR_OK) goto cleanup; status = cr_parser_parse_term (parser, &value); if (status != CR_OK) goto cleanup; result = cr_rgb_new (); if (!result) goto cleanup; status = cr_rgb_set_from_term (result, value); cleanup: if (parser) { cr_parser_destroy (parser); parser = NULL; } if (value) { cr_term_destroy(value); value = NULL; } return result ; }