Initial commit

engines/titanic/support/font.h

@@ -0,0 +1,128 @@
+/* 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 TITANIC_FONT_H
+#define TITANIC_FONT_H
+
+#include "common/scummsys.h"
+#include "common/array.h"
+#include "titanic/support/rect.h"
+#include "titanic/support/string.h"
+#include "titanic/support/text_cursor.h"
+
+namespace Titanic {
+
+enum TextCommand { TEXTCMD_NPC = 26, TEXTCMD_SET_COLOR = 27 };
+
+enum WriteCharacterResult {
+	WC_IN_BOUNDS = 0, WC_OUTSIDE_TOP = -1, WC_OUTSIDE_BOTTOM = -2,
+	WC_OUTSIDE_LEFT = -3, WC_OUTSIDE_RIGHT = -4
+};
+
+class CVideoSurface;
+
+class STFont {
+	struct CharEntry {
+		uint _width;
+		uint _offset;
+	};
+private:
+	/**
+	 * Copys a rectangle representing a character in the font data to
+	 * a given destination position in the surface
+	 */
+	void copyRect(CVideoSurface *surface, const Common::Point &destPos,
+		Rect &srcRect);
+
+	/**
+	 * Write a character
+	 */
+	WriteCharacterResult writeChar(CVideoSurface *surface, unsigned char c,
+		const Common::Point &pt, const Rect &destRect, const Rect *srcRect);
+
+	/**
+	 * Extends a passed text area by the space required for
+	 * the given character
+	 */
+	void extendBounds(Point &textSize, byte c, int maxWidth) const;
+
+	/**
+	 * Called at spacing between words, checks for line wrapping
+	 */
+	void checkLineWrap(Point &textSize, int maxWidth, const char *&str) const;
+public:
+	byte *_dataPtr;
+	size_t _dataSize;
+	int _fontHeight;
+	uint _dataWidth;
+	CharEntry _chars[256];
+	byte _fontR, _fontG, _fontB;
+public:
+	STFont();
+	~STFont();
+
+	/**
+	 * Load a specified font
+	 */
+	void load(int fontNumber);
+
+	/**
+	 * Return the width in pixels of the specified text
+	 */
+	int stringWidth(const CString &text) const;
+
+	/**
+	 * Write a string to the specified surface
+	 * @returns		The index of the last character that was visible
+	 *				with the drawing area
+	 */
+	int writeString(CVideoSurface *surface, const Rect &rect1, const Rect &destRect,
+		int yOffset, const CString &str, CTextCursor *textCursor);
+
+	/**
+	 * Write a string to the specified surface
+	 */
+	void writeString(CVideoSurface *surface, const Point &destPos, Rect &clipRect,
+		const CString &str, int lineWidth = 0);
+
+	/**
+	 * Get the text area a string will fit into
+	 * @param str		String
+	 * @param maxWidth	Maximum width in pixels
+	 * @param sizeOut	Optional pointer to output size (width, height)
+	 * @returns			Required height
+	 */
+	int getTextBounds(const CString &str, int maxWidth, Point *sizeOut) const;
+
+	/**
+	 * Sets the font color
+	 */
+	void setColor(byte r, byte g, byte b);
+
+	/**
+	 * Gets the font color
+	 */
+	uint16 getColor() const;
+};
+
+} // End of namespace Titanic
+
+#endif /* TITANIC_FONT_H */