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diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.0.5/src/ColorSpecialHandler.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.0.5/src/ColorSpecialHandler.cpp
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+/*************************************************************************
+** ColorSpecialHandler.cpp **
+** **
+** This file is part of dvisvgm -- the DVI to SVG converter **
+** Copyright (C) 2005-2011 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** This program is free software; you can redistribute it and/or **
+** modify it under the terms of the GNU General Public License as **
+** published by the Free Software Foundation; either version 3 of **
+** the License, or (at your option) any later version. **
+** **
+** 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, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#include <algorithm>
+#include <cmath>
+#include <cstring>
+#include <iomanip>
+#include <sstream>
+#include <vector>
+#include "ColorSpecialHandler.h"
+#include "SpecialActions.h"
+
+using namespace std;
+
+
+
+/** Approximates a CMYK color by an RGB triple. The component values
+ * are expected to be normalized, i.e. 0 <= cmyk[i],rgb[j] <= 1.
+ * @param[in] cmyk color in CMYK space
+ * @param[out] rgb RGB approximation */
+static void cmyk_to_rgb (const vector<float> &cmyk, vector<float> &rgb) {
+ for (int i=0; i < 3; i++)
+ rgb[i] = 1.0f-min(1.0f, cmyk[i]+cmyk[3]);
+}
+
+
+/** Converts a color given in HSB coordinates to RGB.
+ * @param[in] hsb color in HSB space
+ * @param[out] rgb color in RGB space */
+static void hsb_to_rgb (const vector<float> &hsb, vector<float> &rgb) {
+ if (hsb[1] == 0)
+ rgb[0] = rgb[1] = rgb[2] = hsb[2];
+ else {
+ float h = hsb[0]-floor(hsb[0]);
+ float i = floor(6*h);
+ float f = 6.0f*h-i;
+ float p = hsb[2]*(1-hsb[1]);
+ float q = hsb[2]*(1-hsb[1]*f);
+ float t = hsb[2]*(1-hsb[1]*(1-f));
+ switch (int(i)) {
+ case 0 : rgb[0]=hsb[2]; rgb[1]=t; rgb[2]=p; break;
+ case 1 : rgb[0]=q; rgb[1]=hsb[2]; rgb[2]=p; break;
+ case 2 : rgb[0]=p; rgb[1]=hsb[2]; rgb[2]=t; break;
+ case 3 : rgb[0]=p; rgb[1]=q; rgb[2]=hsb[2]; break;
+ case 4 : rgb[0]=t; rgb[1]=p; rgb[2]=hsb[2]; break;
+ case 5 : rgb[0]=hsb[2]; rgb[1]=p; rgb[2]=q; break;
+ default: ; // prevent compiler warning
+ }
+ }
+}
+
+
+/** Converts a gray value to RGB.
+ * @param[in] gray normalized gray value (0 <= gray <= 1)
+ * @param[out] rgb resulting RGB triple */
+static void gray_to_rgb (const float gray, vector<float> &rgb) {
+ for (int i=0; i < 3; i++)
+ rgb[i] = gray;
+}
+
+
+static float read_float (istream &is) {
+ is.clear();
+ float v;
+ is >> v;
+ if (is.fail())
+ throw SpecialException("number expected");
+ return v;
+}
+
+
+/** Reads multiple float values from a given stream. The number of
+ * values read is determined by the size of the result vector.
+ * @param[in] is stream to be read from
+ * @param[out] v the resulting floats */
+static void read_floats (istream &is, vector<float> &v) {
+ for (size_t i=0; i < v.size(); i++)
+ v[i] = read_float(is);
+}
+
+
+static bool color_constant (const string &c, vector<float> &rgb) {
+ // converted color constants from color.pro
+ const struct {
+ const char *name;
+ const float rgb[3];
+ }
+ constants[] = {
+ {"Apricot", {1, 0.68f, 0.48f}},
+ {"Aquamarine", {0.18f, 1, 0.7f}},
+ {"Bittersweet", {0.76f, 0.01f, 0}},
+ {"Black", {0, 0, 0}},
+ {"Blue", {0, 0, 1}},
+ {"BlueGreen", {0.15f, 1, 0.67f}},
+ {"BlueViolet", {0.1f, 0.05f, 0.96f}},
+ {"BrickRed", {0.72f, 0, 0}},
+ {"Brown", {0.4f, 0, 0}},
+ {"BurntOrange", {1, 0.49f, 0}},
+ {"CadetBlue", {0.38f, 0.43f, 0.77f}},
+ {"CarnationPink", {1, 0.37f, 1}},
+ {"Cerulean", {0.06f, 0.89f, 1}},
+ {"CornflowerBlue", {0.35f, 0.87f, 1}},
+ {"Cyan", {0, 1, 1}},
+ {"Dandelion", {1, 0.71f, 0.16f}},
+ {"DarkOrchid", {0.6f, 0.2f, 0.8f}},
+ {"Emerald", {0, 1, 0.5f}},
+ {"ForestGreen", {0, 0.88f, 0}},
+ {"Fuchsia", {0.45f, 0.01f, 0.92f}},
+ {"Goldenrod", {1, 0.9f, 0.16f}},
+ {"Gray", {0.5f, 0.5f, 0.5f}},
+ {"Green", {0, 1, 0}},
+ {"GreenYellow", {0.85f, 1, 0.31f}},
+ {"JungleGreen", {0.01f, 1, 0.48f}},
+ {"Lavender", {1, 0.52f, 1}},
+ {"LimeGreen", {0.5f, 1, 0}},
+ {"Magenta", {1, 0, 1}},
+ {"Mahogany", {0.65f, 0, 0}},
+ {"Maroon", {0.68f, 0, 0}},
+ {"Melon", {1, 0.54f, 0.5f}},
+ {"MidnightBlue", {0, 0.44f, 0.57f}},
+ {"Mulberry", {0.64f, 0.08f, 0.98f}},
+ {"NavyBlue", {0.06f, 0.46f, 1}},
+ {"OliveGreen", {0, 0.6f, 0}},
+ {"Orange", {1, 0.39f, 0.13f}},
+ {"OrangeRed", {1, 0, 0.5f}},
+ {"Orchid", {0.68f, 0.36f, 1}},
+ {"Peach", {1, 0.5f, 0.3f}},
+ {"Periwinkle", {0.43f, 0.45f, 1}},
+ {"PineGreen", {0, 0.75f, 0.16f}},
+ {"Plum", {0.5f, 0, 1}},
+ {"ProcessBlue", {0.04f, 1, 1}},
+ {"Purple", {0.55f, 0.14f, 1}},
+ {"RawSienna", {0.55f, 0, 0}},
+ {"Red", {1, 0, 0}},
+ {"RedOrange", {1, 0.23f, 0.13f}},
+ {"RedViolet", {0.59f, 0, 0.66f}},
+ {"Rhodamine", {1, 0.18f, 1}},
+ {"RoyalBlue", {0, 0.5f, 1}},
+ {"RoyalPurple", {0.25f, 0.1f, 1}},
+ {"RubineRed", {1, 0, 0.87f}},
+ {"Salmon", {1, 0.47f, 0.62f}},
+ {"SeaGreen", {0.31f, 1, 0.5f}},
+ {"Sepia", {0.3f, 0, 0}},
+ {"SkyBlue", {0.38f, 1, 0.88f}},
+ {"SpringGreen", {0.74f, 1, 0.24f}},
+ {"Tan", {0.86f, 0.58f, 0.44f}},
+ {"TealBlue", {0.12f, 0.98f, 0.64f}},
+ {"Thistle", {0.88f, 0.41f, 1}},
+ {"Turquoise", {0.15f, 1, 0.8f}},
+ {"Violet", {0.21f, 0.12f, 1}},
+ {"VioletRed", {1, 0.19f, 1}},
+ {"White", {1, 1, 1}},
+ {"WildStrawberry", {1, 0.04f, 0.61f}},
+ {"Yellow", {1, 1, 0}},
+ {"YellowGreen", {0.56f, 1, 0.26f}},
+ {"YellowOrange", {1, 0.58f, 0}}
+ };
+ // binary search
+ int first=0, last=68-1;
+ while (first <= last) {
+ int mid = first+(last-first)/2;
+ int cmp = strcmp(constants[mid].name, c.c_str());
+ if (cmp > 0)
+ last = mid-1;
+ else if (cmp < 0)
+ first = mid+1;
+ else {
+ rgb[0] = constants[mid].rgb[0];
+ rgb[1] = constants[mid].rgb[1];
+ rgb[2] = constants[mid].rgb[2];
+ return true;
+ }
+ }
+ return false;
+}
+
+
+/** Reads a color statement from an input stream and converts it to RGB.
+ * A color statement has the following syntax:
+ * <color model> <component values>
+ * Currently, the following color models are supported: rgb, cmyk, hsb and gray.
+ * Examples: rgb 1 0.5 0, gray 0.5
+ * @param[in] model if model != "" this value specifies the model, otherwise it's read from the stream
+ * @param[in] is stream to be read from
+ * @param[out] resulting RGB triple
+ * @return true if statement has successfully been read */
+static void read_color (string model, istream &is, vector<float> &rgb) {
+ if (model.empty())
+ is >> model;
+ if (model == "rgb")
+ read_floats(is, rgb);
+ else if (model == "cmyk") {
+ vector<float> cmyk(4);
+ read_floats(is, cmyk);
+ cmyk_to_rgb(cmyk, rgb);
+ }
+ else if (model == "hsb") {
+ vector<float> hsb(3);
+ read_floats(is, hsb);
+ hsb_to_rgb(hsb, rgb);
+ }
+ else if (model == "gray")
+ gray_to_rgb(read_float(is), rgb);
+ else if (!color_constant(model, rgb))
+ throw SpecialException("unknown color statement");
+ if (rgb[0] > 1 || rgb[1] > 1 || rgb[2] > 1) {
+ ostringstream oss;
+ oss << "invalid RGB value (" << rgb[0] << ',' << rgb[1] << ',' << rgb[2] << ')';
+ throw SpecialException(oss.str());
+ }
+}
+
+
+bool ColorSpecialHandler::process (const char *prefix, istream &is, SpecialActions *actions) {
+ vector<float> rgb(3);
+ if (prefix && strcmp(prefix, "background") == 0) {
+ read_color("", is, rgb);
+ actions->setBgColor(rgb);
+ }
+ else {
+ string cmd;
+ is >> cmd;
+ if (cmd == "push") { // color push <model> <params>
+ read_color("", is, rgb);
+ _colorStack.push(rgb);
+ }
+ else if (cmd == "pop") {
+ if (!_colorStack.empty()) // color pop
+ _colorStack.pop();
+ }
+ else { // color <model> <params>
+ read_color(cmd, is, rgb);
+ while (!_colorStack.empty())
+ _colorStack.pop();
+ _colorStack.push(rgb);
+ }
+ if (actions) {
+ if (_colorStack.empty())
+ actions->setColor(Color::BLACK);
+ else
+ actions->setColor(_colorStack.top());
+ }
+ }
+ return true;
+}
+
+
+const char** ColorSpecialHandler::prefixes () const {
+ static const char *pfx[] = {"color", 0};
+ return pfx;
+}
+