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engines/qdengine/system/graphics/UI_TextParser.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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/>.
+ *
+ */
+
+#ifndef QDENGINE_SYSTEM_GRAPHICS_UI_TEXT_PARSER_H
+#define QDENGINE_SYSTEM_GRAPHICS_UI_TEXT_PARSER_H
+
+
+#include "qdengine/system/graphics/gr_font.h"
+
+
+namespace QDEngine {
+
+struct OutNode {
+	enum {
+		NEW_LINE,
+		TEXT,
+		COLOR
+	} type;
+	int width;
+	union {
+		struct {
+			const char *begin;
+			const char *end;
+		} nl;
+		struct {
+			int style;
+		} t;
+		int color;
+	};
+	OutNode() : type(NEW_LINE), width(0) { nl.begin = 0; nl.end = 0; }
+	OutNode(const char *b, const char *e, int wd) : type(TEXT), width(wd) { nl.begin = b; nl.end = e; }
+	OutNode(int clr) : type(COLOR), width(0), color(clr) {}
+};
+
+typedef Std::vector<OutNode> OutNodes;
+
+class UI_TextParser {
+public:
+	UI_TextParser(const grFont *font = 0);
+	UI_TextParser(const UI_TextParser &src);
+
+	void operator= (const UI_TextParser &src);
+
+	void setFont(const grFont *font);
+
+	void parseString(const char *text, int color = 0, int fitIn = -1);
+
+	const OutNodes &outNodes() const {
+		return _outNodes;
+	}
+
+	int fontHeight() const {
+		return _font ? _font->size_y() : 1;
+	}
+	const Vect2i &size() const {
+		return _size;
+	}
+
+	int lineCount() const {
+		return _lineCount;
+	}
+	OutNodes::const_iterator getLineBegin(int lineNum) const;
+
+private:
+	void init();
+
+	inline int fromHex(char a) {
+		if (a >= '0' && a <= '9')
+			return a - '0';
+		if (a >= 'A' && a <= 'F')
+			return a - 'A' + 10;
+		if (a >= 'a' && a <= 'f')
+			return a - 'a' + 10;
+		return -1;
+	}
+
+	inline void addChar(byte cc) {
+		int width = _font->char_width(cc);
+		if (testWidth(width) || cc != ' ')
+			_tagWidth += width;
+		++_pstr;
+	}
+
+	inline void skipNode() {
+		_lineBegin = _pstr;
+		_lastSpace = _lineBegin;
+		_lastTagWidth = 0;
+		_tagWidth = 0;
+	}
+
+	inline void putNode(OutNode &node) {
+		_outNodes.push_back(node);
+		skipNode();
+	}
+
+	void putText() {
+		if (_pstr == _lineBegin)
+			return;
+		_lineWidth += _tagWidth;
+		OutNode node(_lineBegin, _pstr, _tagWidth);
+		putNode(node);
+	}
+
+	void endLine() {
+		_size.x = MAX(_size.x, _lineWidth);
+
+		_outNodes[_prevLineIndex].width = _lineWidth;
+		_lineWidth = 0;
+
+		_outNodes.push_back(OutNode());
+		_prevLineIndex = _outNodes.size() - 1;
+
+		++_lineCount;
+	}
+
+	void getColor(int defColor);
+	int getStyle(const char *styleptr, const char *end);
+	int getToken();
+	bool testWidth(int width);
+
+	OutNodes _outNodes;
+
+	int _prevLineIndex;
+	const char *_lastSpace;
+	int _lastTagWidth;
+
+	const char *_lineBegin;
+	const char *_pstr;
+	int _tagWidth;
+	int _lineWidth;
+
+	int _fitIn;
+
+	Vect2i _size;
+	int _lineCount;
+
+	const grFont *_font;
+
+};
+
+} // namespace QDEngine
+
+#endif // QDENGINE_SYSTEM_GRAPHICS_UI_TEXT_PARSER_H