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Diffstat (limited to 'engines/bladerunner/font.cpp')
| -rw-r--r-- | engines/bladerunner/font.cpp | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/engines/bladerunner/font.cpp b/engines/bladerunner/font.cpp new file mode 100644 index 0000000000..2f15780719 --- /dev/null +++ b/engines/bladerunner/font.cpp @@ -0,0 +1,203 @@ +/* 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 "bladerunner/font.h" + +#include "bladerunner/bladerunner.h" + +#include "common/debug.h" + +namespace BladeRunner { + +Font::Font(BladeRunnerEngine *vm) : _vm(vm) { + reset(); +} + +Font::~Font() { + close(); +} + +bool Font::open(const Common::String &fileName, int screenWidth, int screenHeight, int spacing1, int spacing2, uint16 color) { + reset(); + + _screenWidth = screenWidth; + _screenHeight = screenHeight; + _spacing1 = spacing1; + _spacing2 = spacing2; + _color = color; + + Common::ScopedPtr<Common::SeekableReadStream> stream(_vm->getResourceStream(fileName)); + if (!stream) { + debug("Font::open failed to open '%s'", fileName.c_str()); + return false; + } + + _characterCount = stream->readUint32LE(); + _maxWidth = stream->readUint32LE(); + _maxHeight = stream->readUint32LE(); + _dataSize = stream->readUint32LE(); + _data = new uint16[_dataSize]; + if (!_data) { + debug("Font::open failed to allocate font buffer"); + return false; + } + + stream->read(_characters, _characterCount * sizeof(FontCharacter)); + stream->read(_data, _dataSize * sizeof(uint16)); + return true; +} + +void Font::close() { + if (_data != nullptr) { + delete[] _data; + } + reset(); +} + +void Font::setSpacing(int spacing1, int spacing2) { + if (_data) { + _spacing1 = spacing1; + _spacing2 = spacing2; + } +} + +void Font::setColor(uint16 color) { + if (_data && _color != color) { + replaceColor(_color, color); + _color = color; + } +} + +void Font::draw(const Common::String &text, Graphics::Surface &surface, int x, int y) { + if (_data) { + if (x < 0) { + x = 0; + } + if (y < 0) { + y = 0; + } + + int textWidth = getTextWidth(text); + if (textWidth + x >= _screenWidth) { + x = _screenWidth - (textWidth + 1); + } + if (_maxHeight + y >= _screenHeight) { + y = _screenHeight - _maxHeight; + } + + const char *character = text.c_str(); + while (*character != 0) { + drawCharacter(*character, surface, x, y); + x += _spacing1 + _characters[*character + 1]._width; + character++; + } + } + +} + +void Font::drawColor(const Common::String &text, Graphics::Surface &surface, int x, int y, uint16 color) { + if (_color != color) { + setColor(color); + } + draw(text, surface, x, y); +} + +int Font::getTextWidth(const Common::String &text) { + const char *character = text.c_str(); + + if (!_data) { + return 0; + } + int totalWidth = 0; + if (*character == 0) { + return 0; + } + while (*character != 0) { + totalWidth = _spacing1 + _characters[*character + 1]._width; + character++; + } + return totalWidth - _spacing1; +} + +void Font::reset() { + _maxWidth = 0; + _maxHeight = 0; + _characterCount = 0; + _data = nullptr; + _dataSize = 0; + _screenWidth = 0; + _screenHeight = 0; + _spacing1 = 0; + _spacing2 = 0; + _color = 0x7FFF; + _intersperse = 0; + + memset(_characters, 0, 5120); +} + +void Font::replaceColor(uint16 oldColor, uint16 newColor) { + if (!_data || !_dataSize) { + return; + } + for (int i = 0; i < _dataSize; i++) { + if (_data[i] == oldColor) { + _data[i] = newColor; + } + } +} + +void Font::drawCharacter(const char character, Graphics::Surface &surface, int x, int y) { + if (x < 0 || x >= this->_screenWidth || y < 0 || y >= _screenHeight || !_data || character + 1 >= _characterCount) { + return; + } + + uint16 *dstPtr = (uint16*)surface.getBasePtr(x + _characters[character + 1]._x, y + _characters[character + 1]._y); + uint16 *srcPtr = &_data[_characters[character + 1]._dataOffset]; + int width = _characters[character + 1]._width; + int height = _characters[character + 1]._height; + if (_intersperse && y & 1) { + dstPtr += surface.w; + } + + int endY = height + y - 1; + int currentY = y; + while (currentY <= endY && currentY < _screenHeight) { + int currentX = x; + int endX = width + x - 1; + while (currentX <= endX && currentX < _screenWidth) { + if (!(*srcPtr & 0x8000)) { + *dstPtr = *srcPtr; + } + dstPtr++; + srcPtr++; + currentX++; + } + dstPtr += surface.w - width; + if (_intersperse) { + srcPtr += width; + dstPtr += surface.w; + currentY++; + } + currentY++; + } +} +} // End of namespace BladeRunner |