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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.
*
*/
#include "common/textconsole.h"
#include "titanic/support/font.h"
#include "titanic/support/files_manager.h"
#include "titanic/titanic.h"
namespace Titanic {
STFont::STFont() {
_dataPtr = nullptr;
_dataSize = 0;
_fontHeight = 0;
_dataWidth = 0;
_fontR = _fontG = _fontB = 0;
}
STFont::~STFont() {
delete[] _dataPtr;
}
void STFont::load(int fontNumber) {
assert(!_dataPtr);
Common::SeekableReadStream *stream = g_vm->_filesManager->getResource(
CString::format("STFONT/%d", fontNumber));
if (!stream)
error("Could not locate the specified font");
_fontHeight = stream->readUint32LE();
_dataWidth = stream->readUint32LE();
for (uint idx = 0; idx < 256; ++idx)
_chars[idx]._width = stream->readUint32LE();
for (uint idx = 0; idx < 256; ++idx)
_chars[idx]._offset = stream->readUint32LE();
_dataSize = stream->readUint32LE();
_dataPtr = new byte[_dataSize];
stream->read(_dataPtr, _dataSize);
delete stream;
}
void STFont::setColor(byte r, byte g, byte b) {
_fontR = r;
_fontG = g;
_fontB = b;
}
uint16 STFont::getColor() const {
return g_system->getScreenFormat().RGBToColor(_fontR, _fontG, _fontB);
}
int STFont::getTextBounds(const CString &str, int maxWidth, Point *sizeOut) const {
Point textSize;
// Reset output dimensions if provided
if (sizeOut)
*sizeOut = Point(0, 0);
if (_fontHeight == 0 || !_dataPtr)
// No font, so return immediately
return 0;
// Loop through the characters of the string
if (!str.empty()) {
for (const char *strP = str.c_str(); *strP; ++strP) {
if (*strP == TEXTCMD_NPC) {
strP += 3;
} else if (*strP == TEXTCMD_SET_COLOR) {
strP += 4;
} else {
if (*strP == ' ') {
// Check fo rline wrapping
checkLineWrap(textSize, maxWidth, strP);
}
extendBounds(textSize, *strP, maxWidth);
}
}
}
if (sizeOut)
*sizeOut = textSize;
return textSize.y + _fontHeight;
}
int STFont::stringWidth(const CString &text) const {
if (text.empty())
return 0;
const char *srcP = text.c_str();
int total = 0;
char c;
while ((c = *srcP++)) {
if (c == 26) {
// Skip over command parameter bytes
srcP += 3;
} else if (c == TEXTCMD_SET_COLOR) {
// Skip over command parameter bytes
srcP += 4;
} else if (c != '\n') {
total += _chars[(byte)c]._width;
}
}
return total;
}
int STFont::writeString(CVideoSurface *surface, const Rect &rect1, const Rect &destRect,
int yOffset, const CString &str, CTextCursor *textCursor) {
if (!_fontHeight || !_dataPtr)
return -1;
Point textSize(0, -yOffset);
Rect destBounds = destRect;
destBounds.constrain(rect1);
if (destBounds.isEmpty())
return -1;
const char *endP = nullptr;
const char *strEndP = str.c_str() + str.size() - 1;
for (const char *srcP = str.c_str(); *srcP; ++srcP) {
if (*srcP == TEXTCMD_NPC) {
srcP += 3;
} else if (*srcP == TEXTCMD_SET_COLOR) {
// Change the color used for characters
byte r = *++srcP;
byte g = *++srcP;
byte b = *++srcP;
++srcP;
setColor(r, g, b);
} else {
if (*srcP == ' ') {
// Check fo rline wrapping
checkLineWrap(textSize, rect1.width(), srcP);
if (!*srcP)
return endP - str.c_str();
}
if (*srcP != '\n') {
WriteCharacterResult result = writeChar(surface, *srcP, textSize, rect1, &destBounds);
if (result == WC_OUTSIDE_BOTTOM)
return endP - str.c_str();
else if (result == WC_IN_BOUNDS)
endP = srcP;
}
if (srcP < strEndP)
extendBounds(textSize, *srcP, rect1.width());
}
}
if (textCursor && textCursor->getMode() == -2) {
Point cursorPos(rect1.left + textSize.x, rect1.top + textSize.y);
textCursor->setPos(cursorPos);
}
return endP ? endP - str.c_str() : 0;
}
void STFont::writeString(CVideoSurface *surface, const Point &destPos, Rect &clipRect,
const CString &str, int lineWidth) {
if (!_fontHeight || !_dataPtr || str.empty())
return;
if (!lineWidth)
// No line width specified, so get in the width
lineWidth = stringWidth(str);
Rect textRect(0, 0, lineWidth, _fontHeight);
Point textPt = destPos;
// Perform clipping as necessary if the text will fall outside clipping area
if (textPt.y > clipRect.bottom)
return;
if ((textPt.y + textRect.height()) > clipRect.bottom)
textRect.bottom = textRect.top - textPt.y + clipRect.bottom;
if (textPt.y < clipRect.top) {
if ((textPt.y + textRect.height()) < clipRect.top)
return;
textRect.top += clipRect.top - textPt.y;
textPt.y = clipRect.top;
}
// Iterate through each character of the string
for (const byte *srcP = (const byte *)str.c_str(); *srcP; ++srcP) {
byte c = *srcP;
if (c == 0xE9)
c = '$';
// Form a rect of the area of the next character to draw
Rect charRect(_chars[c]._offset, textRect.top,
_chars[c]._offset + _chars[c]._width, textRect.bottom);
if (textPt.x < clipRect.left) {
// Character is either partially or entirely left off-screen
if ((textPt.x + charRect.width()) < clipRect.left) {
textPt.x += _chars[c]._width;
continue;
}
// Partially clipped on left-hand side
charRect.left = clipRect.left - textPt.x;
textPt.x = clipRect.left;
} else if ((textPt.x + charRect.width()) > clipRect.right) {
if (textPt.x > clipRect.right)
// Now entirely off right-hand side, so stop drawing
break;
// Partially clipped on right-hand side
charRect.right += clipRect.right - textPt.x - charRect.width();
}
// At this point, we know we've got to draw at least part of a character,
// and have figured out the area of the character to draw
copyRect(surface, textPt, charRect);
}
}
WriteCharacterResult STFont::writeChar(CVideoSurface *surface, unsigned char c, const Point &pt,
const Rect &destRect, const Rect *srcRect) {
if (c == 233)
c = '$';
Rect tempRect;
tempRect.left = _chars[c]._offset;
tempRect.right = _chars[c]._offset + _chars[c]._width;
tempRect.top = 0;
tempRect.bottom = _fontHeight;
Point destPos(pt.x + destRect.left, pt.y + destRect.top);
if (srcRect->isEmpty())
srcRect = &destRect;
if (destPos.y > srcRect->bottom)
return WC_OUTSIDE_BOTTOM;
if ((destPos.y + tempRect.height()) > srcRect->bottom) {
tempRect.bottom += tempRect.top - destPos.y;
}
if (destPos.y < srcRect->top) {
if ((tempRect.height() + destPos.y) < srcRect->top)
return WC_OUTSIDE_TOP;
tempRect.top += srcRect->top - destPos.y;
destPos.y = srcRect->top;
}
if (destPos.x < srcRect->left) {
if ((tempRect.width() + destPos.x) < srcRect->left)
return WC_OUTSIDE_LEFT;
tempRect.left += srcRect->left - destPos.x;
destPos.x = srcRect->left;
} else {
if ((tempRect.width() + destPos.x) > srcRect->right) {
if (destPos.x > srcRect->right)
return WC_OUTSIDE_RIGHT;
tempRect.right += srcRect->left - destPos.x;
}
}
copyRect(surface, destPos, tempRect);
return WC_IN_BOUNDS;
}
void STFont::copyRect(CVideoSurface *surface, const Point &pt, Rect &rect) {
if (surface->lock()) {
uint16 *lineP = surface->getBasePtr(pt.x, pt.y);
uint16 color = getColor();
bool is16Bit = surface->getPixelDepth() == 2;
for (int yp = rect.top; yp < rect.bottom; ++yp, lineP += surface->getWidth()) {
uint16 *destP = lineP;
for (int xp = rect.left; xp < rect.right; ++xp, ++destP) {
const byte *transP = _dataPtr + yp * _dataWidth + xp;
surface->copyPixel(destP, &color, *transP >> 3, is16Bit, true);
}
}
surface->unlock();
}
}
void STFont::extendBounds(Point &textSize, byte c, int maxWidth) const {
textSize.x += _chars[c]._width;
if (c == '\n' || textSize.x > maxWidth) {
textSize.x = 0;
textSize.y += _fontHeight;
}
}
void STFont::checkLineWrap(Point &textSize, int maxWidth, const char *&str) const {
bool flag = false;
int totalWidth = 0;
for (const char *srcPtr = str; *srcPtr && *srcPtr != ' '; ++srcPtr) {
if (*srcPtr == ' ' && flag)
break;
if (*srcPtr == TEXTCMD_NPC) {
srcPtr += 3;
} else if (*srcPtr == TEXTCMD_SET_COLOR) {
srcPtr += 4;
} else {
totalWidth += _chars[(byte)*srcPtr]._width;
flag = true;
}
}
if ((textSize.x + totalWidth) >= maxWidth && totalWidth < maxWidth) {
// Word wrap
textSize.x = 0;
textSize.y += _fontHeight;
++str;
}
}
} // End of namespace Titanic
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