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/* Copyright (C) 1994-2004 Revolution Software Ltd
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
/****************************************************************************
* MAKETEXT.H - Function prototype for text sprite builder routine JEL Oct96
*
* The routine returns a memory handle to a movable memory block containing
* the required sprite, which must be locked before use. ie. lock, draw
* sprite, unlock/free.
*
* The sprite data contains a frameHeader, but not a standard file header.
*
* Debugger will trap error when word too big for line (maxWidth) or when
* more lines needed than max expected (MAX_LINES)
*
* PARAMETERS:
*
* 'sentence' points to a NULL-TERMINATED STRING
* - string must contain no leading/tailing/extra spaces
* - out-of-range characters in the string are forced to the output as
* a special error-signal character (chequered flag)
*
* 'maxWidth' is the maximum allowed text sprite width, in PIXELS
*
* 'pen' is the desired colour (0-255) for the main body of each character
*
* NB. Border colour is #DEFINEd in textsprt.c (to a colour value for BLACK)
* if 'pen' is zero, the characters are copied directly and NOT remapped.
*
* 'charSet' points to the beginning of the standard file header for the
* desired character set
*
* NB. The first and last characters in the set are #DEFINEd in textsprt.c
*
* RETURNS:
*
* 'textSprite' points to the handle to be used for the text sprite
*
****************************************************************************/
#ifndef _MAKETEXT_H
#define _MAKETEXT_H
#include "sword2/debug.h"
// Output colour for character border - should be be black but note that we
// have to use a different pen number during sequences
#define BORDER_PEN 194
namespace Sword2 {
// allow enough for all the debug text blocks (see debug.cpp)
#define MAX_text_blocs MAX_DEBUG_TEXT_BLOCKS + 1
enum {
// only for debug text, since it doesn't keep text inside the screen
// margin!
NO_JUSTIFICATION = 0,
// these all force text inside the screen edge margin when necessary
POSITION_AT_CENTRE_OF_BASE = 1,
POSITION_AT_CENTRE_OF_TOP = 2,
POSITION_AT_LEFT_OF_TOP = 3,
POSITION_AT_RIGHT_OF_TOP = 4,
POSITION_AT_LEFT_OF_BASE = 5,
POSITION_AT_RIGHT_OF_BASE = 6,
POSITION_AT_LEFT_OF_CENTRE = 7,
POSITION_AT_RIGHT_OF_CENTRE = 8
};
enum {
DEFAULT_TEXT = 0,
FINNISH_TEXT = 1,
POLISH_TEXT = 2
};
struct TextBloc {
int16 x;
int16 y;
// RDSPR_ status bits - see defintion of SpriteInfo structure for
// correct size!
uint16 type;
Memory *text_mem;
};
struct LineInfo {
uint16 width; // width of line in pixels
uint16 length; // length of line in characters
};
class FontRenderer {
private:
Sword2Engine *_vm;
TextBloc _blocList[MAX_text_blocs];
// layout variables - these used to be defines, but now we're dealing
// with 2 character sets
int8 _lineSpacing; // no. of pixels to separate lines of
// characters in the output sprite - negative
// for overlap
int8 _charSpacing; // no. of pixels to separate characters along
// each line - negative for overlap
uint8 _borderPen; // output pen colour of character borders
uint16 analyseSentence(uint8 *sentence, uint16 maxWidth, uint32 fontRes, LineInfo *line);
Memory *buildTextSprite(uint8 *sentence, uint32 fontRes, uint8 pen, LineInfo *line, uint16 noOfLines);
uint16 charWidth(uint8 ch, uint32 fontRes);
uint16 charHeight(uint32 fontRes);
FrameHeader* findChar(uint8 ch, uint8 *charSet);
void copyChar(FrameHeader *charPtr, uint8 *spritePtr, uint16 spriteWidth, uint8 pen);
public:
FontRenderer(Sword2Engine *vm) : _vm(vm) {
for (int i = 0; i < MAX_text_blocs; i++)
_blocList[i].text_mem = NULL;
}
Memory *makeTextSprite(uint8 *sentence, uint16 maxWidth, uint8 pen, uint32 fontRes, uint8 border = BORDER_PEN);
void killTextBloc(uint32 bloc_number);
void printTextBlocs(void);
uint32 buildNewBloc(uint8 *ascii, int16 x, int16 y, uint16 width, uint8 pen, uint32 type, uint32 fontRes, uint8 justification);
};
} // End of namespace Sword2
#endif
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