mirror of
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376 lines
10 KiB
C++
376 lines
10 KiB
C++
/* _______ __ __ __ ______ __ __ _______ __ __
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* / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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* / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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* / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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* / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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* /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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* \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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*
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* Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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*
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*
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* Per Larsson a.k.a finalman
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* Olof Naessén a.k.a jansem/yakslem
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*
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* Visit: http://guichan.sourceforge.net
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*
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* License: (BSD)
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Guichan nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* For comments regarding functions please see the header file.
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*/
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#include "guichan/imagefont.hpp"
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#include <sstream>
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#include "guichan/color.hpp"
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#include "guichan/exception.hpp"
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#include "guichan/graphics.hpp"
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#include "guichan/image.hpp"
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namespace gcn
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{
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ImageFont::ImageFont(const std::string& filename,
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const std::string& glyphs)
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{
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mFilename = filename;
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mImage = Image::load(filename, false);
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Color separator = mImage->getPixel(0, 0);
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int i = 0;
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for (i = 0;
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i < mImage->getWidth() && separator == mImage->getPixel(i, 0);
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++i)
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{
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}
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if (i >= mImage->getWidth())
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{
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throw GCN_EXCEPTION("Corrupt image.");
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}
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int j = 0;
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for (j = 0; j < mImage->getHeight(); ++j)
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{
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if (separator == mImage->getPixel(i, j))
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{
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break;
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}
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}
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mHeight = j;
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int x = 0, y = 0;
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unsigned char k;
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for (i = 0; i < (int)glyphs.size(); ++i)
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{
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k = glyphs.at(i);
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mGlyph[k] = scanForGlyph(k, x, y, separator);
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// Update x och y with new coordinates.
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x = mGlyph[k].x + mGlyph[k].width;
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y = mGlyph[k].y;
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}
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mImage->convertToDisplayFormat();
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mRowSpacing = 0;
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mGlyphSpacing = 0;
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}
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ImageFont::ImageFont(Image* image,
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const std::string& glyphs)
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{
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mFilename = "Image*";
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if (image == NULL)
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{
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GCN_EXCEPTION("Font image is NULL");
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}
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mImage = image;
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Color separator = mImage->getPixel(0, 0);
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int i = 0;
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for (i = 0;
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i < mImage->getWidth() && separator == mImage->getPixel(i, 0);
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++i)
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{
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}
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if (i >= mImage->getWidth())
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{
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throw GCN_EXCEPTION("Corrupt image.");
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}
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int j = 0;
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for (j = 0; j < mImage->getHeight(); ++j)
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{
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if (separator == mImage->getPixel(i, j))
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{
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break;
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}
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}
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mHeight = j;
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int x = 0, y = 0;
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unsigned char k;
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for (i = 0; i < (int)glyphs.size(); ++i)
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{
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k = glyphs.at(i);
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mGlyph[k] = scanForGlyph(k, x, y, separator);
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// Update x och y with new coordinates.
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x = mGlyph[k].x + mGlyph[k].width;
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y = mGlyph[k].y;
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}
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mImage->convertToDisplayFormat();
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mRowSpacing = 0;
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mGlyphSpacing = 0;
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}
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ImageFont::ImageFont(const std::string& filename,
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unsigned char glyphsFrom,
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unsigned char glyphsTo)
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{
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mFilename = filename;
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mImage = Image::load(filename, false);
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Color separator = mImage->getPixel(0, 0);
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int i = 0;
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for (i=0; separator == mImage->getPixel(i, 0)
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&& i < mImage->getWidth(); ++i)
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{
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}
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if (i >= mImage->getWidth())
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{
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throw GCN_EXCEPTION("Corrupt image.");
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}
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int j = 0;
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for (j = 0; j < mImage->getHeight(); ++j)
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{
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if (separator == mImage->getPixel(i, j))
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{
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break;
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}
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}
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mHeight = j;
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int x = 0, y = 0;
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for (i = glyphsFrom; i < glyphsTo + 1; i++)
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{
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mGlyph[i] = scanForGlyph(i, x, y, separator);
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// Update x och y with new coordinates.
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x = mGlyph[i].x + mGlyph[i].width;
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y = mGlyph[i].y;
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}
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mImage->convertToDisplayFormat();
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mRowSpacing = 0;
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mGlyphSpacing = 0;
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}
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ImageFont::~ImageFont()
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{
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delete mImage;
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}
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int ImageFont::getWidth(unsigned char glyph) const
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{
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if (mGlyph[glyph].width == 0)
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{
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return mGlyph[(int)(' ')].width + mGlyphSpacing;
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}
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return mGlyph[glyph].width + mGlyphSpacing;
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}
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int ImageFont::getHeight() const
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{
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return mHeight + mRowSpacing;
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}
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int ImageFont::drawGlyph(Graphics* graphics,
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unsigned char glyph,
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int x, int y)
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{
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// This is needed for drawing the glyph in the middle
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// if we have spacing.
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int yoffset = getRowSpacing() / 2;
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if (mGlyph[glyph].width == 0)
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{
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graphics->drawRectangle(Rectangle(x,
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y + 1 + yoffset,
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mGlyph[(int)(' ')].width - 1,
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mGlyph[(int)(' ')].height - 2));
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return mGlyph[(int)(' ')].width + mGlyphSpacing;
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}
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graphics->drawImage(mImage,
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mGlyph[glyph].x,
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mGlyph[glyph].y,
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x,
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y + yoffset,
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mGlyph[glyph].width,
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mGlyph[glyph].height);
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return mGlyph[glyph].width + mGlyphSpacing;
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}
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void ImageFont::drawString(Graphics* graphics,
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const std::string& text,
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int x,
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int y)
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{
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unsigned int i;
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for (i = 0; i < text.size(); ++i)
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{
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drawGlyph(graphics, text.at(i), x, y);
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x += getWidth(text.at(i));
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}
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}
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void ImageFont::setRowSpacing(int spacing)
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{
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mRowSpacing = spacing;
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}
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int ImageFont::getRowSpacing()
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{
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return mRowSpacing;
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}
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void ImageFont::setGlyphSpacing(int spacing)
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{
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mGlyphSpacing = spacing;
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}
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int ImageFont::getGlyphSpacing()
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{
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return mGlyphSpacing;
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}
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Rectangle ImageFont::scanForGlyph(unsigned char glyph,
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int x,
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int y,
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const Color& separator)
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{
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Color color;
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do
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{
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++x;
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if (x >= mImage->getWidth())
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{
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y += mHeight + 1;
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x = 0;
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if (y >= mImage->getHeight())
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{
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std::string str;
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std::ostringstream os(str);
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os << "Image ";
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os << mFilename;
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os << " with font is corrupt near character '";
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os << glyph;
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os << "'";
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throw GCN_EXCEPTION(os.str());
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}
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}
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color = mImage->getPixel(x, y);
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} while (color == separator);
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int width = 0;
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do
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{
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++width;
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if (x + width >= mImage->getWidth())
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{
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std::string str;
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std::ostringstream os(str);
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os << "Image ";
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os << mFilename;
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os << " with font is corrupt near character '";
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os << glyph;
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os << "'";
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throw GCN_EXCEPTION(os.str());
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}
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color = mImage->getPixel(x + width, y);
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} while (color != separator);
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return Rectangle(x, y, width, mHeight);
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}
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int ImageFont::getWidth(const std::string& text) const
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{
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unsigned int i;
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int size = 0;
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for (i = 0; i < text.size(); ++i)
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{
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size += getWidth(text.at(i));
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}
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return size - mGlyphSpacing;
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}
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int ImageFont::getStringIndexAt(const std::string& text, int x) const
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{
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unsigned int i;
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int size = 0;
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for (i = 0; i < text.size(); ++i)
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{
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size += getWidth(text.at(i));
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if (size > x)
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{
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return i;
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}
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}
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return text.size();
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}
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}
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