590 lines
14 KiB
C++
590 lines
14 KiB
C++
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// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CGUIFont.h"
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#ifdef _IRR_COMPILE_WITH_GUI_
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#include "os.h"
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#include "IGUIEnvironment.h"
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#include "IXMLReader.h"
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#include "IReadFile.h"
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#include "IVideoDriver.h"
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#include "IGUISpriteBank.h"
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namespace irr
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{
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namespace gui
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{
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//! constructor
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CGUIFont::CGUIFont(IGUIEnvironment *env, const io::path& filename)
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: Driver(0), SpriteBank(0), Environment(env), WrongCharacter(0),
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MaxHeight(0), GlobalKerningWidth(0), GlobalKerningHeight(0)
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{
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#ifdef _DEBUG
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setDebugName("CGUIFont");
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#endif
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if (Environment)
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{
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// don't grab environment, to avoid circular references
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Driver = Environment->getVideoDriver();
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SpriteBank = Environment->getSpriteBank(filename);
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if (!SpriteBank) // could be default-font which has no file
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SpriteBank = Environment->addEmptySpriteBank(filename);
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if (SpriteBank)
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SpriteBank->grab();
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}
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if (Driver)
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Driver->grab();
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setInvisibleCharacters ( L" " );
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}
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//! destructor
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CGUIFont::~CGUIFont()
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{
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if (Driver)
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Driver->drop();
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if (SpriteBank)
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{
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SpriteBank->drop();
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// TODO: spritebank still exists in gui-environment and should be removed here when it's
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// reference-count is 1. Just can't do that from here at the moment.
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// But spritebank would not be able to drop textures anyway because those are in texture-cache
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// where they can't be removed unless materials start reference-couting 'em.
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}
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}
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//! loads a font file from xml
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bool CGUIFont::load(io::IXMLReader* xml)
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{
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if (!SpriteBank)
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return false;
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SpriteBank->clear();
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while (xml->read())
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{
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if (io::EXN_ELEMENT == xml->getNodeType())
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{
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if (core::stringw(L"Texture") == xml->getNodeName())
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{
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// add a texture
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core::stringc fn = xml->getAttributeValue(L"filename");
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u32 i = (u32)xml->getAttributeValueAsInt(L"index");
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core::stringw alpha = xml->getAttributeValue(L"hasAlpha");
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while (i+1 > SpriteBank->getTextureCount())
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SpriteBank->addTexture(0);
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// disable mipmaps+filtering
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bool mipmap = Driver->getTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS);
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Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, false);
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// load texture
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SpriteBank->setTexture(i, Driver->getTexture(fn));
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// set previous mip-map+filter state
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Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, mipmap);
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// couldn't load texture, abort.
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if (!SpriteBank->getTexture(i))
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{
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os::Printer::log("Unable to load all textures in the font, aborting", ELL_ERROR);
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_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
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return false;
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}
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else
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{
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// colorkey texture rather than alpha channel?
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if (alpha == core::stringw("false"))
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Driver->makeColorKeyTexture(SpriteBank->getTexture(i), core::position2di(0,0));
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}
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}
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else if (core::stringw(L"c") == xml->getNodeName())
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{
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// adding a character to this font
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SFontArea a;
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SGUISpriteFrame f;
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SGUISprite s;
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core::rect<s32> rectangle;
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a.underhang = xml->getAttributeValueAsInt(L"u");
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a.overhang = xml->getAttributeValueAsInt(L"o");
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a.spriteno = SpriteBank->getSprites().size();
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s32 texno = xml->getAttributeValueAsInt(L"i");
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// parse rectangle
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core::stringc rectstr = xml->getAttributeValue(L"r");
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wchar_t ch = xml->getAttributeValue(L"c")[0];
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const c8 *c = rectstr.c_str();
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s32 val;
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val = 0;
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while (*c >= '0' && *c <= '9')
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{
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val *= 10;
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val += *c - '0';
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c++;
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}
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rectangle.UpperLeftCorner.X = val;
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while (*c == L' ' || *c == L',') c++;
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val = 0;
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while (*c >= '0' && *c <= '9')
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{
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val *= 10;
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val += *c - '0';
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c++;
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}
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rectangle.UpperLeftCorner.Y = val;
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while (*c == L' ' || *c == L',') c++;
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val = 0;
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while (*c >= '0' && *c <= '9')
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{
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val *= 10;
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val += *c - '0';
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c++;
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}
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rectangle.LowerRightCorner.X = val;
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while (*c == L' ' || *c == L',') c++;
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val = 0;
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while (*c >= '0' && *c <= '9')
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{
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val *= 10;
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val += *c - '0';
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c++;
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}
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rectangle.LowerRightCorner.Y = val;
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CharacterMap.insert(ch,Areas.size());
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// make frame
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f.rectNumber = SpriteBank->getPositions().size();
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f.textureNumber = texno;
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// add frame to sprite
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s.Frames.push_back(f);
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s.frameTime = 0;
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// add rectangle to sprite bank
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SpriteBank->getPositions().push_back(rectangle);
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a.width = rectangle.getWidth();
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// add sprite to sprite bank
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SpriteBank->getSprites().push_back(s);
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// add character to font
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Areas.push_back(a);
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}
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}
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}
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// set bad character
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WrongCharacter = getAreaFromCharacter(L' ');
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setMaxHeight();
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return true;
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}
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void CGUIFont::setMaxHeight()
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{
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if ( !SpriteBank )
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return;
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MaxHeight = 0;
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s32 t;
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core::array< core::rect<s32> >& p = SpriteBank->getPositions();
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for (u32 i=0; i<p.size(); ++i)
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{
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t = p[i].getHeight();
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if (t>MaxHeight)
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MaxHeight = t;
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}
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}
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//! loads a font file, native file needed, for texture parsing
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bool CGUIFont::load(io::IReadFile* file)
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{
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if (!Driver)
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return false;
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return loadTexture(Driver->createImageFromFile(file),
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file->getFileName());
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}
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//! loads a font file, native file needed, for texture parsing
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bool CGUIFont::load(const io::path& filename)
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{
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if (!Driver)
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return false;
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return loadTexture(Driver->createImageFromFile( filename ),
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filename);
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}
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//! load & prepare font from ITexture
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bool CGUIFont::loadTexture(video::IImage* image, const io::path& name)
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{
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if (!image || !SpriteBank)
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return false;
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s32 lowerRightPositions = 0;
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video::IImage* tmpImage=image;
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bool deleteTmpImage=false;
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switch(image->getColorFormat())
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{
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case video::ECF_R5G6B5:
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tmpImage = Driver->createImage(video::ECF_A1R5G5B5,image->getDimension());
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image->copyTo(tmpImage);
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deleteTmpImage=true;
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break;
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case video::ECF_A1R5G5B5:
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case video::ECF_A8R8G8B8:
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break;
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case video::ECF_R8G8B8:
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tmpImage = Driver->createImage(video::ECF_A8R8G8B8,image->getDimension());
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image->copyTo(tmpImage);
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deleteTmpImage=true;
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break;
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default:
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os::Printer::log("Unknown texture format provided for CGUIFont::loadTexture", ELL_ERROR);
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return false;
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}
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readPositions(tmpImage, lowerRightPositions);
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WrongCharacter = getAreaFromCharacter(L' ');
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// output warnings
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if (!lowerRightPositions || !SpriteBank->getSprites().size())
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os::Printer::log("Either no upper or lower corner pixels in the font file. If this font was made using the new font tool, please load the XML file instead. If not, the font may be corrupted.", ELL_ERROR);
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else
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if (lowerRightPositions != (s32)SpriteBank->getPositions().size())
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os::Printer::log("The amount of upper corner pixels and the lower corner pixels is not equal, font file may be corrupted.", ELL_ERROR);
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bool ret = ( !SpriteBank->getSprites().empty() && lowerRightPositions );
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if ( ret )
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{
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bool flag[2];
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flag[0] = Driver->getTextureCreationFlag ( video::ETCF_ALLOW_NON_POWER_2 );
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flag[1] = Driver->getTextureCreationFlag ( video::ETCF_CREATE_MIP_MAPS );
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Driver->setTextureCreationFlag(video::ETCF_ALLOW_NON_POWER_2, true);
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Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, false );
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SpriteBank->addTexture(Driver->addTexture(name, tmpImage));
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Driver->setTextureCreationFlag(video::ETCF_ALLOW_NON_POWER_2, flag[0] );
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Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, flag[1] );
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}
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if (deleteTmpImage)
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tmpImage->drop();
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image->drop();
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setMaxHeight();
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return ret;
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}
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void CGUIFont::readPositions(video::IImage* image, s32& lowerRightPositions)
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{
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if (!SpriteBank )
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return;
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const core::dimension2d<u32> size = image->getDimension();
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video::SColor colorTopLeft = image->getPixel(0,0);
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colorTopLeft.setAlpha(255);
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image->setPixel(0,0,colorTopLeft);
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video::SColor colorLowerRight = image->getPixel(1,0);
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video::SColor colorBackGround = image->getPixel(2,0);
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video::SColor colorBackGroundTransparent = 0;
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image->setPixel(1,0,colorBackGround);
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// start parsing
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core::position2d<s32> pos(0,0);
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for (pos.Y=0; pos.Y<(s32)size.Height; ++pos.Y)
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{
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for (pos.X=0; pos.X<(s32)size.Width; ++pos.X)
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{
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const video::SColor c = image->getPixel(pos.X, pos.Y);
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if (c == colorTopLeft)
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{
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image->setPixel(pos.X, pos.Y, colorBackGroundTransparent);
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SpriteBank->getPositions().push_back(core::rect<s32>(pos, pos));
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}
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else
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if (c == colorLowerRight)
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{
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// too many lower right points
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if (SpriteBank->getPositions().size()<=(u32)lowerRightPositions)
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{
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lowerRightPositions = 0;
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return;
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}
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image->setPixel(pos.X, pos.Y, colorBackGroundTransparent);
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SpriteBank->getPositions()[lowerRightPositions].LowerRightCorner = pos;
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// add frame to sprite bank
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SGUISpriteFrame f;
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f.rectNumber = lowerRightPositions;
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f.textureNumber = 0;
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SGUISprite s;
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s.Frames.push_back(f);
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s.frameTime = 0;
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SpriteBank->getSprites().push_back(s);
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// add character to font
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SFontArea a;
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a.overhang = 0;
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a.underhang = 0;
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a.spriteno = lowerRightPositions;
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a.width = SpriteBank->getPositions()[lowerRightPositions].getWidth();
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Areas.push_back(a);
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// map letter to character
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wchar_t ch = (wchar_t)(lowerRightPositions + 32);
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CharacterMap.set(ch, lowerRightPositions);
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++lowerRightPositions;
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}
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else
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if (c == colorBackGround)
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image->setPixel(pos.X, pos.Y, colorBackGroundTransparent);
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}
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}
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}
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//! set an Pixel Offset on Drawing ( scale position on width )
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void CGUIFont::setKerningWidth(s32 kerning)
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{
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GlobalKerningWidth = kerning;
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}
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//! set an Pixel Offset on Drawing ( scale position on width )
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s32 CGUIFont::getKerningWidth(const wchar_t* thisLetter, const wchar_t* previousLetter) const
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{
|
||
|
|
s32 ret = GlobalKerningWidth;
|
||
|
|
|
||
|
|
if (thisLetter)
|
||
|
|
{
|
||
|
|
ret += Areas[getAreaFromCharacter(*thisLetter)].overhang;
|
||
|
|
|
||
|
|
if (previousLetter)
|
||
|
|
{
|
||
|
|
ret += Areas[getAreaFromCharacter(*previousLetter)].underhang;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//! set an Pixel Offset on Drawing ( scale position on height )
|
||
|
|
void CGUIFont::setKerningHeight(s32 kerning)
|
||
|
|
{
|
||
|
|
GlobalKerningHeight = kerning;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//! set an Pixel Offset on Drawing ( scale position on height )
|
||
|
|
s32 CGUIFont::getKerningHeight () const
|
||
|
|
{
|
||
|
|
return GlobalKerningHeight;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//! returns the sprite number from a given character
|
||
|
|
u32 CGUIFont::getSpriteNoFromChar(const wchar_t *c) const
|
||
|
|
{
|
||
|
|
return Areas[getAreaFromCharacter(*c)].spriteno;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
s32 CGUIFont::getAreaFromCharacter(const wchar_t c) const
|
||
|
|
{
|
||
|
|
core::map<wchar_t, s32>::Node* n = CharacterMap.find(c);
|
||
|
|
if (n)
|
||
|
|
return n->getValue();
|
||
|
|
else
|
||
|
|
return WrongCharacter;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CGUIFont::setInvisibleCharacters( const wchar_t *s )
|
||
|
|
{
|
||
|
|
Invisible = s;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//! returns the dimension of text
|
||
|
|
core::dimension2d<u32> CGUIFont::getDimension(const wchar_t* text) const
|
||
|
|
{
|
||
|
|
core::dimension2d<u32> dim(0, 0);
|
||
|
|
core::dimension2d<u32> thisLine(0, MaxHeight);
|
||
|
|
|
||
|
|
for (const wchar_t* p = text; *p; ++p)
|
||
|
|
{
|
||
|
|
bool lineBreak=false;
|
||
|
|
if (*p == L'\r') // Mac or Windows breaks
|
||
|
|
{
|
||
|
|
lineBreak = true;
|
||
|
|
if (p[1] == L'\n') // Windows breaks
|
||
|
|
++p;
|
||
|
|
}
|
||
|
|
else if (*p == L'\n') // Unix breaks
|
||
|
|
{
|
||
|
|
lineBreak = true;
|
||
|
|
}
|
||
|
|
if (lineBreak)
|
||
|
|
{
|
||
|
|
dim.Height += thisLine.Height;
|
||
|
|
if (dim.Width < thisLine.Width)
|
||
|
|
dim.Width = thisLine.Width;
|
||
|
|
thisLine.Width = 0;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
const SFontArea &area = Areas[getAreaFromCharacter(*p)];
|
||
|
|
|
||
|
|
thisLine.Width += area.underhang;
|
||
|
|
thisLine.Width += area.width + area.overhang + GlobalKerningWidth;
|
||
|
|
}
|
||
|
|
|
||
|
|
dim.Height += thisLine.Height;
|
||
|
|
if (dim.Width < thisLine.Width)
|
||
|
|
dim.Width = thisLine.Width;
|
||
|
|
|
||
|
|
return dim;
|
||
|
|
}
|
||
|
|
|
||
|
|
//! draws some text and clips it to the specified rectangle if wanted
|
||
|
|
void CGUIFont::draw(const core::stringw& text, const core::rect<s32>& position,
|
||
|
|
video::SColor color,
|
||
|
|
bool hcenter, bool vcenter, const core::rect<s32>* clip
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (!Driver || !SpriteBank)
|
||
|
|
return;
|
||
|
|
|
||
|
|
core::dimension2d<s32> textDimension; // NOTE: don't make this u32 or the >> later on can fail when the dimension width is < position width
|
||
|
|
core::position2d<s32> offset = position.UpperLeftCorner;
|
||
|
|
|
||
|
|
if (hcenter || vcenter || clip)
|
||
|
|
textDimension = getDimension(text.c_str());
|
||
|
|
|
||
|
|
if (hcenter)
|
||
|
|
offset.X += (position.getWidth() - textDimension.Width) >> 1;
|
||
|
|
|
||
|
|
if (vcenter)
|
||
|
|
offset.Y += (position.getHeight() - textDimension.Height) >> 1;
|
||
|
|
|
||
|
|
if (clip)
|
||
|
|
{
|
||
|
|
core::rect<s32> clippedRect(offset, textDimension);
|
||
|
|
clippedRect.clipAgainst(*clip);
|
||
|
|
if (!clippedRect.isValid())
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
core::array<u32> indices(text.size());
|
||
|
|
core::array<core::position2di> offsets(text.size());
|
||
|
|
|
||
|
|
for(u32 i = 0;i < text.size();i++)
|
||
|
|
{
|
||
|
|
wchar_t c = text[i];
|
||
|
|
|
||
|
|
bool lineBreak=false;
|
||
|
|
if ( c == L'\r') // Mac or Windows breaks
|
||
|
|
{
|
||
|
|
lineBreak = true;
|
||
|
|
if ( text[i + 1] == L'\n') // Windows breaks
|
||
|
|
c = text[++i];
|
||
|
|
}
|
||
|
|
else if ( c == L'\n') // Unix breaks
|
||
|
|
{
|
||
|
|
lineBreak = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lineBreak)
|
||
|
|
{
|
||
|
|
offset.Y += MaxHeight;
|
||
|
|
offset.X = position.UpperLeftCorner.X;
|
||
|
|
|
||
|
|
if ( hcenter )
|
||
|
|
{
|
||
|
|
offset.X += (position.getWidth() - textDimension.Width) >> 1;
|
||
|
|
}
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
SFontArea& area = Areas[getAreaFromCharacter(c)];
|
||
|
|
|
||
|
|
offset.X += area.underhang;
|
||
|
|
if ( Invisible.findFirst ( c ) < 0 )
|
||
|
|
{
|
||
|
|
indices.push_back(area.spriteno);
|
||
|
|
offsets.push_back(offset);
|
||
|
|
}
|
||
|
|
|
||
|
|
offset.X += area.width + area.overhang + GlobalKerningWidth;
|
||
|
|
}
|
||
|
|
|
||
|
|
SpriteBank->draw2DSpriteBatch(indices, offsets, clip, color);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//! Calculates the index of the character in the text which is on a specific position.
|
||
|
|
s32 CGUIFont::getCharacterFromPos(const wchar_t* text, s32 pixel_x) const
|
||
|
|
{
|
||
|
|
s32 x = 0;
|
||
|
|
s32 idx = 0;
|
||
|
|
|
||
|
|
while (text[idx])
|
||
|
|
{
|
||
|
|
const SFontArea& a = Areas[getAreaFromCharacter(text[idx])];
|
||
|
|
|
||
|
|
x += a.width + a.overhang + a.underhang + GlobalKerningWidth;
|
||
|
|
|
||
|
|
if (x >= pixel_x)
|
||
|
|
return idx;
|
||
|
|
|
||
|
|
++idx;
|
||
|
|
}
|
||
|
|
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
IGUISpriteBank* CGUIFont::getSpriteBank() const
|
||
|
|
{
|
||
|
|
return SpriteBank;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // end namespace gui
|
||
|
|
} // end namespace irr
|
||
|
|
|
||
|
|
#endif // _IRR_COMPILE_WITH_GUI_
|
||
|
|
|