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Diffstat (limited to 'engines/zvision/text/text.cpp')
| -rw-r--r-- | engines/zvision/text/text.cpp | 578 |
1 files changed, 578 insertions, 0 deletions
diff --git a/engines/zvision/text/text.cpp b/engines/zvision/text/text.cpp new file mode 100644 index 0000000000..868ee4f1ae --- /dev/null +++ b/engines/zvision/text/text.cpp @@ -0,0 +1,578 @@ +/* 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/scummsys.h" +#include "common/file.h" +#include "common/tokenizer.h" +#include "common/debug.h" +#include "common/rect.h" +#include "graphics/fontman.h" +#include "graphics/colormasks.h" +#include "graphics/surface.h" +#include "graphics/font.h" +#include "graphics/fonts/ttf.h" + +#include "zvision/text/text.h" +#include "zvision/graphics/render_manager.h" +#include "zvision/text/truetype_font.h" +#include "zvision/scripting/script_manager.h" + +namespace ZVision { + +TextStyleState::TextStyleState() { + _fontname = "Arial"; + _blue = 255; + _green = 255; + _red = 255; + _bold = false; +#if 0 + _newline = false; + _escapement = 0; +#endif + _italic = false; + _justification = TEXT_JUSTIFY_LEFT; + _size = 12; +#if 0 + _skipcolor = false; +#endif + _strikeout = false; + _underline = false; + _statebox = 0; + _sharp = false; +} + +TextChange TextStyleState::parseStyle(const Common::String &str, int16 len) { + Common::String buf = Common::String(str.c_str(), len); + + uint retval = TEXT_CHANGE_NONE; + + Common::StringTokenizer tokenizer(buf, " "); + Common::String token; + + while (!tokenizer.empty()) { + token = tokenizer.nextToken(); + + if (token.matchString("font", true)) { + token = tokenizer.nextToken(); + if (token[0] == '"') { + Common::String _tmp = Common::String(token.c_str() + 1); + + while (token.lastChar() != '"' && !tokenizer.empty()) { + token = tokenizer.nextToken(); + _tmp += " " + token; + } + + if (_tmp.lastChar() == '"') + _tmp.deleteLastChar(); + + _fontname = _tmp; + } else { + if (!tokenizer.empty()) + _fontname = token; + } + retval |= TEXT_CHANGE_FONT_TYPE; + + } else if (token.matchString("blue", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + int32 tmp = atoi(token.c_str()); + if (_blue != tmp) { + _blue = tmp; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } else if (token.matchString("red", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + int32 tmp = atoi(token.c_str()); + if (_red != tmp) { + _red = tmp; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } else if (token.matchString("green", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + int32 tmp = atoi(token.c_str()); + if (_green != tmp) { + _green = tmp; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } else if (token.matchString("newline", true)) { +#if 0 + if ((retval & TXT_RET_NEWLN) == 0) + _newline = 0; + + _newline++; +#endif + retval |= TEXT_CHANGE_NEWLINE; + } else if (token.matchString("point", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + int32 tmp = atoi(token.c_str()); + if (_size != tmp) { + _size = tmp; + retval |= TEXT_CHANGE_FONT_TYPE; + } + } + } else if (token.matchString("escapement", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); +#if 0 + int32 tmp = atoi(token.c_str()); + _escapement = tmp; +#endif + } + } else if (token.matchString("italic", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + if (token.matchString("on", true)) { + if (_italic != true) { + _italic = true; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } else if (token.matchString("off", true)) { + if (_italic != false) { + _italic = false; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } + } else if (token.matchString("underline", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + if (token.matchString("on", true)) { + if (_underline != true) { + _underline = true; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } else if (token.matchString("off", true)) { + if (_underline != false) { + _underline = false; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } + } else if (token.matchString("strikeout", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + if (token.matchString("on", true)) { + if (_strikeout != true) { + _strikeout = true; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } else if (token.matchString("off", true)) { + if (_strikeout != false) { + _strikeout = false; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } + } else if (token.matchString("bold", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + if (token.matchString("on", true)) { + if (_bold != true) { + _bold = true; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } else if (token.matchString("off", true)) { + if (_bold != false) { + _bold = false; + retval |= TEXT_CHANGE_FONT_STYLE; + } + } + } + } else if (token.matchString("skipcolor", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); +#if 0 + if (token.matchString("on", true)) { + _skipcolor = true; + } else if (token.matchString("off", true)) { + _skipcolor = false; + } +#endif + } + } else if (token.matchString("image", true)) { + // Not used + } else if (token.matchString("statebox", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + _statebox = atoi(token.c_str()); + retval |= TEXT_CHANGE_HAS_STATE_BOX; + } + } else if (token.matchString("justify", true)) { + if (!tokenizer.empty()) { + token = tokenizer.nextToken(); + if (token.matchString("center", true)) + _justification = TEXT_JUSTIFY_CENTER; + else if (token.matchString("left", true)) + _justification = TEXT_JUSTIFY_LEFT; + else if (token.matchString("right", true)) + _justification = TEXT_JUSTIFY_RIGHT; + } + } + } + return (TextChange)retval; +} + +void TextStyleState::readAllStyles(const Common::String &txt) { + int16 startTextPosition = -1; + int16 endTextPosition = -1; + + for (uint16 i = 0; i < txt.size(); i++) { + if (txt[i] == '<') + startTextPosition = i; + else if (txt[i] == '>') { + endTextPosition = i; + if (startTextPosition != -1) { + if ((endTextPosition - startTextPosition - 1) > 0) { + parseStyle(Common::String(txt.c_str() + startTextPosition + 1), endTextPosition - startTextPosition - 1); + } + } + } + + } +} + +void TextStyleState::updateFontWithTextState(StyledTTFont &font) { + uint tempStyle = 0; + + if (_bold) { + tempStyle |= StyledTTFont::TTF_STYLE_BOLD; + } + if (_italic) { + tempStyle |= StyledTTFont::TTF_STYLE_ITALIC; + } + if (_underline) { + tempStyle |= StyledTTFont::TTF_STYLE_UNDERLINE; + } + if (_strikeout) { + tempStyle |= StyledTTFont::TTF_STYLE_STRIKETHROUGH; + } + if (_sharp) { + tempStyle |= StyledTTFont::TTF_STYLE_SHARP; + } + + font.loadFont(_fontname, _size, tempStyle); +} + +void TextRenderer::drawTextWithJustification(const Common::String &text, StyledTTFont &font, uint32 color, Graphics::Surface &dest, int lineY, TextJustification justify) { + if (justify == TEXT_JUSTIFY_LEFT) + font.drawString(&dest, text, 0, lineY, dest.w, color, Graphics::kTextAlignLeft); + else if (justify == TEXT_JUSTIFY_CENTER) + font.drawString(&dest, text, 0, lineY, dest.w, color, Graphics::kTextAlignCenter); + else if (justify == TEXT_JUSTIFY_RIGHT) + font.drawString(&dest, text, 0, lineY, dest.w, color, Graphics::kTextAlignRight); +} + +int32 TextRenderer::drawText(const Common::String &text, TextStyleState &state, Graphics::Surface &dest) { + StyledTTFont font(_engine); + state.updateFontWithTextState(font); + + uint32 color = _engine->_resourcePixelFormat.RGBToColor(state._red, state._green, state._blue); + drawTextWithJustification(text, font, color, dest, 0, state._justification); + + return font.getStringWidth(text); +} + +struct TextSurface { + TextSurface(Graphics::Surface *surface, Common::Point surfaceOffset, uint lineNumber) + : _surface(surface), + _surfaceOffset(surfaceOffset), + _lineNumber(lineNumber) { + } + + Graphics::Surface *_surface; + Common::Point _surfaceOffset; + uint _lineNumber; +}; + +void TextRenderer::drawTextWithWordWrapping(const Common::String &text, Graphics::Surface &dest) { + Common::Array<TextSurface> textSurfaces; + Common::Array<uint> lineWidths; + Common::Array<TextJustification> lineJustifications; + + // Create the initial text state + TextStyleState currentState; + + // Create an empty font and bind it to the state + StyledTTFont font(_engine); + currentState.updateFontWithTextState(font); + + Common::String currentSentence; // Not a true 'grammatical' sentence. Rather, it's just a collection of words + Common::String currentWord; + int sentenceWidth = 0; + int wordWidth = 0; + int lineWidth = 0; + int lineHeight = font.getFontHeight(); + + uint currentLineNumber = 0u; + + uint numSpaces = 0u; + int spaceWidth = 0; + + // The pixel offset to the currentSentence + Common::Point sentencePixelOffset; + + uint i = 0u; + uint stringlen = text.size(); + + while (i < stringlen) { + if (text[i] == '<') { + // Flush the currentWord to the currentSentence + currentSentence += currentWord; + sentenceWidth += wordWidth; + + // Reset the word variables + currentWord.clear(); + wordWidth = 0; + + // Parse the style tag + uint startTextPosition = i; + while (i < stringlen && text[i] != '>') { + ++i; + } + uint endTextPosition = i; + + uint32 textColor = currentState.getTextColor(_engine); + + uint stateChanges = 0u; + if ((endTextPosition - startTextPosition - 1) > 0) { + stateChanges = currentState.parseStyle(Common::String(text.c_str() + startTextPosition + 1), endTextPosition - startTextPosition - 1); + } + + if (stateChanges & (TEXT_CHANGE_FONT_TYPE | TEXT_CHANGE_FONT_STYLE)) { + // Use the last state to render out the current sentence + // Styles apply to the text 'after' them + if (!currentSentence.empty()) { + textSurfaces.push_back(TextSurface(font.renderSolidText(currentSentence, textColor), sentencePixelOffset, currentLineNumber)); + + lineWidth += sentenceWidth; + sentencePixelOffset.x += sentenceWidth; + + // Reset the sentence variables + currentSentence.clear(); + sentenceWidth = 0; + } + + // Update the current state with the style information + currentState.updateFontWithTextState(font); + + lineHeight = MAX(lineHeight, font.getFontHeight()); + spaceWidth = font.getCharWidth(' '); + } + if (stateChanges & TEXT_CHANGE_NEWLINE) { + // If the current sentence has content, render it out + if (!currentSentence.empty()) { + textSurfaces.push_back(TextSurface(font.renderSolidText(currentSentence, textColor), sentencePixelOffset, currentLineNumber)); + } + + // Set line width + lineWidths.push_back(lineWidth + sentenceWidth - (numSpaces * spaceWidth)); + + currentSentence.clear(); + sentenceWidth = 0; + + // Update the offsets + sentencePixelOffset.x = 0u; + sentencePixelOffset.y += lineHeight; + + // Reset the line variables + lineHeight = font.getFontHeight(); + lineWidth = 0; + ++currentLineNumber; + lineJustifications.push_back(currentState._justification); + } + if (stateChanges & TEXT_CHANGE_HAS_STATE_BOX) { + Common::String temp = Common::String::format("%d", _engine->getScriptManager()->getStateValue(currentState._statebox)); + wordWidth += font.getStringWidth(temp); + + // If the word causes the line to overflow, render the sentence and start a new line + if (lineWidth + sentenceWidth + wordWidth > dest.w) { + textSurfaces.push_back(TextSurface(font.renderSolidText(currentSentence, textColor), sentencePixelOffset, currentLineNumber)); + + // Set line width + lineWidths.push_back(lineWidth + sentenceWidth - (numSpaces * spaceWidth)); + + currentSentence.clear(); + sentenceWidth = 0; + + // Update the offsets + sentencePixelOffset.x = 0u; + sentencePixelOffset.y += lineHeight; + + // Reset the line variables + lineHeight = font.getFontHeight(); + lineWidth = 0; + ++currentLineNumber; + lineJustifications.push_back(currentState._justification); + } + } + } else { + currentWord += text[i]; + wordWidth += font.getCharWidth(text[i]); + + if (text[i] == ' ') { + // When we hit the first space, flush the current word to the sentence + if (!currentWord.empty()) { + currentSentence += currentWord; + sentenceWidth += wordWidth; + + currentWord.clear(); + wordWidth = 0; + } + + // We track the number of spaces so we can disregard their width in lineWidth calculations + ++numSpaces; + } else { + // If the word causes the line to overflow, render the sentence and start a new line + if (lineWidth + sentenceWidth + wordWidth > dest.w) { + // Only render out content + if (!currentSentence.empty()) { + textSurfaces.push_back(TextSurface(font.renderSolidText(currentSentence, currentState.getTextColor(_engine)), sentencePixelOffset, currentLineNumber)); + } + + // Set line width + lineWidths.push_back(lineWidth + sentenceWidth - (numSpaces * spaceWidth)); + + currentSentence.clear(); + sentenceWidth = 0; + + // Update the offsets + sentencePixelOffset.x = 0u; + sentencePixelOffset.y += lineHeight; + + // Reset the line variables + lineHeight = font.getFontHeight(); + lineWidth = 0; + ++currentLineNumber; + lineJustifications.push_back(currentState._justification); + } + + numSpaces = 0u; + } + } + + i++; + } + + // Render out any remaining words/sentences + if (!currentWord.empty() || !currentSentence.empty()) { + currentSentence += currentWord; + sentenceWidth += wordWidth; + + textSurfaces.push_back(TextSurface(font.renderSolidText(currentSentence, currentState.getTextColor(_engine)), sentencePixelOffset, currentLineNumber)); + } + + lineWidths.push_back(lineWidth + sentenceWidth); + lineJustifications.push_back(currentState._justification); + + for (Common::Array<TextSurface>::iterator iter = textSurfaces.begin(); iter != textSurfaces.end(); ++iter) { + Common::Rect empty; + + if (lineJustifications[iter->_lineNumber] == TEXT_JUSTIFY_LEFT) { + _engine->getRenderManager()->blitSurfaceToSurface(*iter->_surface, empty, dest, iter->_surfaceOffset.x, iter->_surfaceOffset.y, 0); + } else if (lineJustifications[iter->_lineNumber] == TEXT_JUSTIFY_CENTER) { + _engine->getRenderManager()->blitSurfaceToSurface(*iter->_surface, empty, dest, ((dest.w - lineWidths[iter->_lineNumber]) / 2) + iter->_surfaceOffset.x, iter->_surfaceOffset.y, 0); + } else if (lineJustifications[iter->_lineNumber] == TEXT_JUSTIFY_RIGHT) { + _engine->getRenderManager()->blitSurfaceToSurface(*iter->_surface, empty, dest, dest.w - lineWidths[iter->_lineNumber] + iter->_surfaceOffset.x, iter->_surfaceOffset.y, 0); + } + + // Release memory + iter->_surface->free(); + delete iter->_surface; + } +} + +Common::String readWideLine(Common::SeekableReadStream &stream) { + Common::String asciiString; + + while (true) { + uint32 value = stream.readUint16LE(); + if (stream.eos()) + break; + // Check for CRLF + if (value == 0x0A0D) { + // Read in the extra NULL char + stream.readByte(); // \0 + // End of the line. Break + break; + } + + // Crush each octet pair to a UTF-8 sequence + if (value < 0x80) { + asciiString += (char)(value & 0x7F); + } else if (value >= 0x80 && value < 0x800) { + asciiString += (char)(0xC0 | ((value >> 6) & 0x1F)); + asciiString += (char)(0x80 | (value & 0x3F)); + } else if (value >= 0x800 && value < 0x10000 && value != 0xCCCC) { + asciiString += (char)(0xE0 | ((value >> 12) & 0xF)); + asciiString += (char)(0x80 | ((value >> 6) & 0x3F)); + asciiString += (char)(0x80 | (value & 0x3F)); + } else if (value == 0xCCCC) { + // Ignore, this character is used as newline sometimes + } else if (value >= 0x10000 && value < 0x200000) { + asciiString += (char)(0xF0); + asciiString += (char)(0x80 | ((value >> 12) & 0x3F)); + asciiString += (char)(0x80 | ((value >> 6) & 0x3F)); + asciiString += (char)(0x80 | (value & 0x3F)); + } + } + + return asciiString; +} + +int8 getUtf8CharSize(char chr) { + if ((chr & 0x80) == 0) + return 1; + else if ((chr & 0xE0) == 0xC0) + return 2; + else if ((chr & 0xF0) == 0xE0) + return 3; + else if ((chr & 0xF8) == 0xF0) + return 4; + else if ((chr & 0xFC) == 0xF8) + return 5; + else if ((chr & 0xFE) == 0xFC) + return 6; + + return 1; +} + +uint16 readUtf8Char(const char *chr) { + uint16 result = 0; + if ((chr[0] & 0x80) == 0) + result = chr[0]; + else if ((chr[0] & 0xE0) == 0xC0) + result = ((chr[0] & 0x1F) << 6) | (chr[1] & 0x3F); + else if ((chr[0] & 0xF0) == 0xE0) + result = ((chr[0] & 0x0F) << 12) | ((chr[1] & 0x3F) << 6) | (chr[2] & 0x3F); + else + result = chr[0]; + + return result; +} + +} // End of namespace ZVision |