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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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
/*
* This code is based on Labyrinth of Time code with assistance of
*
* Copyright (c) 1993 Terra Nova Development
* Copyright (c) 2004 The Wyrmkeep Entertainment Co.
*
*/
#include "lab/lab.h"
#include "lab/labfun.h"
#include "lab/text.h"
namespace Lab {
/*****************************************************************************/
/* Closes a font and frees all memory associated with it. */
/*****************************************************************************/
void closeFont(TextFont *tf) {
if (tf) {
if (tf->data && tf->DataLength)
delete[] tf->data;
delete tf;
}
}
/*****************************************************************************/
/* Returns the length of a text in the specified font. */
/*****************************************************************************/
uint16 textLength(TextFont *tf, const char *text, uint16 numchars) {
uint16 length = 0;
if (tf) {
for (uint16 i = 0; i < numchars; i++) {
length += tf->Widths[(uint)*text];
text++;
}
}
return length;
}
/*****************************************************************************/
/* Returns the height of a specified font. */
/*****************************************************************************/
uint16 textHeight(TextFont *tf) {
return (tf) ? tf->Height : 0;
}
/*****************************************************************************/
/* Draws the text to the screen. */
/*****************************************************************************/
void text(TextFont *tf, uint16 x, uint16 y, uint16 color, const char *text, uint16 numchars) {
byte *VGATop, *VGACur, *VGATemp, *VGATempLine, *cdata;
uint32 RealOffset, SegmentOffset;
int32 templeft, LeftInSegment;
uint16 bwidth, mask, curpage, data;
VGATop = g_lab->_graphics->getCurrentDrawingBuffer();
for (uint16 i = 0; i < numchars; i++) {
RealOffset = (g_lab->_graphics->_screenWidth * y) + x;
curpage = RealOffset / g_lab->_graphics->_screenBytesPerPage;
SegmentOffset = RealOffset - (curpage * g_lab->_graphics->_screenBytesPerPage);
LeftInSegment = g_lab->_graphics->_screenBytesPerPage - SegmentOffset;
VGACur = VGATop + SegmentOffset;
if (tf->Widths[(uint)*text]) {
cdata = tf->data + tf->Offsets[(uint)*text];
bwidth = *cdata++;
VGATemp = VGACur;
VGATempLine = VGACur;
for (uint16 rows = 0; rows < tf->Height; rows++) {
VGATemp = VGATempLine;
templeft = LeftInSegment;
for (uint16 cols = 0; cols < bwidth; cols++) {
data = *cdata++;
if (data && (templeft >= 8)) {
for (int j = 7; j >= 0; j--) {
if ((1 << j) & data)
*VGATemp = color;
VGATemp++;
}
templeft -= 8;
} else if (data) {
mask = 0x80;
templeft = LeftInSegment;
for (uint16 counterb = 0; counterb < 8; counterb++) {
if (templeft <= 0) {
curpage++;
VGATemp = (byte *)(VGATop - templeft);
/* Set up VGATempLine for next line */
VGATempLine -= g_lab->_graphics->_screenBytesPerPage;
/* Set up LeftInSegment for next line */
LeftInSegment += g_lab->_graphics->_screenBytesPerPage + templeft;
templeft += g_lab->_graphics->_screenBytesPerPage;
}
if (mask & data)
*VGATemp = color;
VGATemp++;
mask = mask >> 1;
templeft--;
}
} else {
templeft -= 8;
VGATemp += 8;
}
}
VGATempLine += g_lab->_graphics->_screenWidth;
LeftInSegment -= g_lab->_graphics->_screenWidth;
if (LeftInSegment <= 0) {
curpage++;
VGATempLine -= g_lab->_graphics->_screenBytesPerPage;
LeftInSegment += g_lab->_graphics->_screenBytesPerPage;
}
}
}
x += tf->Widths[(int)*text];
text++;
}
}
} // End of namespace Lab
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