323 lines
9.7 KiB
C++
323 lines
9.7 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, 2005, 2006, 2007 Olof Naessén and Per Larsson
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*
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* Js_./
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* Per Larsson a.k.a finalman _RqZ{a<^_aa
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* Olof Naessén a.k.a jansem/yakslem _asww7!uY`> )\a//
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* _Qhm`] _f "'c 1!5m
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* Visit: http://guichan.darkbits.org )Qk<P ` _: :+' .' "{[
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* .)j(] .d_/ '-( P . S
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* License: (BSD) <Td/Z <fP"5(\"??"\a. .L
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* Redistribution and use in source and _dV>ws?a-?' ._/L #'
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* binary forms, with or without )4d[#7r, . ' )d`)[
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* modification, are permitted provided _Q-5'5W..j/?' -?!\)cam'
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* that the following conditions are met: j<<WP+k/);. _W=j f
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* 1. Redistributions of source code must .$%w\/]Q . ."' . mj$
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* retain the above copyright notice, ]E.pYY(Q]>. a J@\
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* this list of conditions and the j(]1u<sE"L,. . ./^ ]{a
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* following disclaimer. 4'_uomm\. )L);-4 (3=
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* 2. Redistributions in binary form must )_]X{Z('a_"a7'<a"a, ]"[
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* reproduce the above copyright notice, #}<]m7`Za??4,P-"'7. ).m
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* this list of conditions and the ]d2e)Q(<Q( ?94 b- LQ/
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* following disclaimer in the <B!</]C)d_, '(<' .f. =C+m
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* documentation and/or other materials .Z!=J ]e []('-4f _ ) -.)m]'
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* provided with the distribution. .w[5]' _[ /.)_-"+? _/ <W"
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* 3. Neither the name of Guichan nor the :$we` _! + _/ . j?
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* names of its contributors may be used =3)= _f (_yQmWW$#( "
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* to endorse or promote products derived - W, sQQQQmZQ#Wwa]..
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* from this software without specific (js, \[QQW$QWW#?!V"".
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* prior written permission. ]y:.<\.. .
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* -]n w/ ' [.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT )/ )/ !
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* HOLDERS AND CONTRIBUTORS "AS IS" AND ANY < (; sac , '
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, ]^ .- %
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF c < r
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR aga< <La
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 5% )P'-3L
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR _bQf` y`..)a
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, ,J?4P'.P"_(\?d'.,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES _Pa,)!f/<[]/ ?"
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT _2-..:. .r+_,.. .
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ?a.<%"' " -'.a_ _,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ^
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* 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 "guisan/imagefont.hpp"
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#include <sstream>
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#include "guisan/color.hpp"
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#include "guisan/exception.hpp"
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#include "guisan/graphics.hpp"
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#include "guisan/image.hpp"
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namespace gcn
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{
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ImageFont::ImageFont(const std::string& filename, 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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addGlyph(k, x, y, separator);
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}
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//int w = mImage->getWidth();
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//int h = mImage->getHeight();
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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, 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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addGlyph(i, x, y, separator);
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}
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//int w = mImage->getWidth();
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//int h = mImage->getHeight();
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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, 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 if we have spacing
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int yoffset = getRowSpacing() >> 1;
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if (mGlyph[glyph].width == 0)
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{
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graphics->drawRectangle(Rectangle(x, 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, mGlyph[glyph].x, mGlyph[glyph].y, x,
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y + yoffset, 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, const std::string& text,
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int x, 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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void ImageFont::addGlyph(unsigned char c, int &x,
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int &y, 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 << c;
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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 w = 0;
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do
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{
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++w;
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if (x+w >= 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 << c;
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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 + w, y);
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} while (color != separator);
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mGlyph[c] = Rectangle(x, y, w, mHeight);
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x += w;
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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)
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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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