mirror of
https://github.com/libretro/scummvm.git
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341 lines
9.0 KiB
C++
341 lines
9.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/debug.h"
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#include "common/file.h"
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#include "graphics/managed_surface.h"
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#include "cryomni3d/font_manager.h"
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namespace CryOmni3D {
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FontManager::FontManager() : _currentFont(nullptr), _transparentBackground(false),
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_spaceWidth(0), _charSpacing(0), _lineHeight(30), _foreColor(0), _blockTextRemaining(nullptr) {
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}
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FontManager::~FontManager() {
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for (Common::Array<Font *>::iterator it = _fonts.begin(); it != _fonts.end(); it++) {
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delete *it;
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}
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}
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void FontManager::loadFonts(const Common::Array<Common::String> &fontFiles) {
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_fonts.reserve(_fonts.size() + fontFiles.size());
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for (Common::Array<Common::String>::const_iterator it = fontFiles.begin(); it != fontFiles.end();
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it++) {
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Common::File font_fl;
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//debug("Open font file %s", it->c_str());
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if (!font_fl.open(*it)) {
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error("Can't open file %s", it->c_str());
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}
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loadFont(font_fl);
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}
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}
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void FontManager::loadFont(Common::ReadStream &font_fl) {
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byte magic[8];
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font_fl.read(magic, sizeof(magic));
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if (memcmp(magic, "CRYOFONT", 8)) {
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error("Invalid font magic");
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}
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// 3 unknown uint16
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(void) font_fl.readUint16BE();
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(void) font_fl.readUint16BE();
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(void) font_fl.readUint16BE();
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Font *font = new Font();
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font->maxHeight = font_fl.readSint16BE();
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//debug("Max char height %d", font.maxHeight);
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font_fl.read(font->comment, sizeof(font->comment));
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//debug("Comment %s", font.comment);
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for (uint i = 0; i < Font::kCharactersCount; i++) {
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uint16 h = font_fl.readUint16BE();
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uint16 w = font_fl.readUint16BE();
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uint sz = font->chars[i].setup(w, h);
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//debug("Char %d sz %dx%d %d", i, w, h, sz);
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font->chars[i].offX = font_fl.readSint16BE();
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font->chars[i].offY = font_fl.readSint16BE();
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font->chars[i].printedWidth = font_fl.readUint16BE();
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//debug("Char %d offX %d offY %d PW %d", i, font.chars[i].offX, font.chars[i].offY, font.chars[i].printedWidth);
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font_fl.read(font->chars[i].data, sz);
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//debug("Char %d read %d", i, v);
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}
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_fonts.push_back(font);
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}
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void FontManager::setCurrentFont(int currentFont) {
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if (currentFont == -1) {
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currentFont = 0;
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}
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_currentFontId = currentFont;
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_currentFont = _fonts[currentFont];
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setSpaceWidth(0);
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}
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void FontManager::setSpaceWidth(uint additionalSpace) {
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if (_currentFont) {
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_spaceWidth = additionalSpace + _currentFont->chars[0].printedWidth;
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} else {
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_spaceWidth = 0;
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}
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}
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uint FontManager::displayStr_(uint x, uint y,
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const Common::String &text) const {
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uint offset = 0;
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for (Common::String::const_iterator it = text.begin(); it != text.end(); it++) {
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offset += displayChar(x + offset, y, *it);
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}
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return offset;
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}
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uint FontManager::displayChar(uint x, uint y, unsigned char c) const {
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if (!_currentFont) {
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error("There is no current font");
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}
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if (!_currentSurface) {
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error("There is no current surface");
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}
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if (c < ' ' || c >= 255) {
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c = '?';
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}
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c -= 32;
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const Character &char_ = _currentFont->chars[c];
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int realX = x + char_.offX;
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int realY = y + char_.offY + _currentFont->maxHeight - 2;
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if (!_transparentBackground) {
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_currentSurface->fillRect(Common::Rect(realX, realY, realX + char_.w, realY + char_.h), 0xff);
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}
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Graphics::Surface src;
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src.init(char_.w, char_.h, char_.w, char_.data, Graphics::PixelFormat::createFormatCLUT8());
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_currentSurface->transBlitFrom(src, Common::Point(realX, realY), 0, false, _foreColor);
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// WORKAROUND: in Versailles game the space width is calculated differently in this function and in the getStrWidth one, let's try to be consistent
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#define KEEP_SPACE_BUG
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#ifndef KEEP_SPACE_BUG
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if (c == 0) {
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return _spaceWidth;
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} else {
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return _charSpacing + char_.printedWidth;
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}
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#else
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return _charSpacing + char_.printedWidth;
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#endif
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}
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uint FontManager::getStrWidth(const Common::String &text) const {
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uint width = 0;
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for (Common::String::const_iterator it = text.begin(); it != text.end(); it++) {
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unsigned char c = *it;
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if (c == ' ') {
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width += _spaceWidth;
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} else {
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if (c < ' ' || c >= 255) {
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c = '?';
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}
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c -= 32;
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width += _charSpacing;
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width += _currentFont->chars[c].printedWidth;
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}
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}
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return width;
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}
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bool FontManager::displayBlockText(const Common::String &text,
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Common::String::const_iterator begin) {
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bool notEnoughSpace = false;
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Common::String::const_iterator ptr = begin;
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Common::Array<Common::String> words;
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if (begin != text.end()) {
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_blockTextRemaining = nullptr;
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while (ptr != text.end() && !notEnoughSpace) {
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uint finalPos;
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bool has_cr;
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calculateWordWrap(text, &ptr, &finalPos, &has_cr, words);
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uint spacesWidth = (words.size() - 1) * _spaceWidth;
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uint remainingSpace = (_blockRect.right - finalPos);
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uint spaceConsumed = 0;
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double spaceWidthPerWord;
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if (words.size() == 1) {
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spaceWidthPerWord = _spaceWidth;
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} else {
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spaceWidthPerWord = (double)spacesWidth / (double)words.size();
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}
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Common::Array<Common::String>::const_iterator word;
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uint word_i;
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for (word = words.begin(), word_i = 0; word != words.end(); word++, word_i++) {
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_blockPos.x += displayStr_(_blockPos.x, _blockPos.y, *word);
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if (!_justifyText || has_cr) {
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_blockPos.x += _spaceWidth;
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} else {
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double sp = (word_i + 1) * spaceWidthPerWord - spaceConsumed;
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_blockPos.x += int16(sp);
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spaceConsumed += uint(sp);
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remainingSpace -= uint(sp);
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}
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}
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if (_blockPos.y + _lineHeight + getFontMaxHeight() >= _blockRect.bottom) {
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notEnoughSpace = true;
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_blockTextRemaining = ptr;
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} else {
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_blockPos.x = _blockRect.left;
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_blockPos.y += _lineHeight;
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}
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}
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}
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return notEnoughSpace;
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}
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uint FontManager::getLinesCount(const Common::String &text, uint width) {
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if (text.size() == 0) {
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// One line even if it's empty
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return 1;
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}
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if (text.size() > 1024) {
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// Too long text, be lazy
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return getStrWidth(text) / width + 3;
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}
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uint lineCount = 0;
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Common::String::const_iterator textP = text.begin();
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uint len = text.size();
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while (len > 0) {
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Common::String buffer;
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uint lineWidth = 0;
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lineCount++;
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while (lineWidth < width && len > 0 && *textP != '\r') {
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buffer += *(textP++);
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len--;
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lineWidth = getStrWidth(buffer);
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}
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if (lineWidth >= width) {
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// We overrun the line, get backwards
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while (buffer.size()) {
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if (buffer[buffer.size() - 1] == ' ') {
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break;
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}
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buffer.deleteLastChar();
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textP--;
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len++;
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}
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if (!buffer.size()) {
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// Word was too long: fail
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return 0;
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}
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if (*textP == ' ') {
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textP++;
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}
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// Continue with next line
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continue;
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}
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if (len == 0) {
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// Job is finished
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break;
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}
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if (*textP == '\r') {
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// Next line
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len--;
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textP++;
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}
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}
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return lineCount;
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}
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void FontManager::calculateWordWrap(const Common::String &text,
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Common::String::const_iterator *position, uint *finalPos, bool *hasCr,
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Common::Array<Common::String> &words) const {
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*hasCr = false;
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uint offset = 0;
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bool wordWrap = false;
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uint lineWidth = _blockRect.right - _blockRect.left;
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Common::String::const_iterator ptr = *position;
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words.clear();
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if (ptr == text.end() || *ptr == '\r') {
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ptr++;
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*hasCr = true;
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*position = ptr;
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*finalPos = offset;
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return;
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}
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while (!wordWrap) {
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Common::String::const_iterator begin = ptr;
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for (; ptr != text.end() && *ptr != '\r' && *ptr != ' '; ptr++) { }
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Common::String word(begin, ptr);
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uint width = getStrWidth(word);
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if (width + offset >= lineWidth) {
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wordWrap = true;
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// word is too long: just put pointer back at begining
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ptr = begin;
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} else {
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words.push_back(word);
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offset += width + _spaceWidth;
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for (; ptr != text.end() && *ptr == ' '; ptr++) { }
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for (; ptr != text.end() && *ptr == '\r'; ptr++) {
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wordWrap = true;
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*hasCr = true;
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}
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}
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}
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if (words.size() > 0) {
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offset -= _spaceWidth;
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}
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*finalPos = offset;
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*position = ptr;
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}
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FontManager::Character::Character() : h(0), w(0), offX(0), offY(0), printedWidth(0), data(0) {
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}
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FontManager::Character::~Character() {
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delete[] data;
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}
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uint FontManager::Character::setup(uint16 width, uint16 height) {
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w = width;
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h = height;
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uint sz = w * h;
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data = new byte[sz];
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return sz;
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}
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} // End of namespace CryOmni3D
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