654 lines
15 KiB
C++
654 lines
15 KiB
C++
// Copyright (C) 2002-2007 Nikolaus Gebhardt
|
|
// This file is part of the "Irrlicht Engine".
|
|
// For conditions of distribution and use, see copyright notice in irrlicht.h
|
|
|
|
#include "CGUIFont.h"
|
|
#include "os.h"
|
|
#include "IGUIEnvironment.h"
|
|
#include "IXMLReader.h"
|
|
#include "IReadFile.h"
|
|
#include "IVideoDriver.h"
|
|
#include "IGUISpriteBank.h"
|
|
#include "CImage.h"
|
|
|
|
namespace irr
|
|
{
|
|
namespace gui
|
|
{
|
|
|
|
//! constructor
|
|
CGUIFont::CGUIFont(IGUIEnvironment *env, const c8* filename)
|
|
: Driver(0), SpriteBank(0), Environment(env), WrongCharacter(0),
|
|
MaxHeight(0), GlobalKerningWidth(0), GlobalKerningHeight(0)
|
|
{
|
|
#ifdef _DEBUG
|
|
setDebugName("CGUIFont");
|
|
#endif
|
|
|
|
if (Environment)
|
|
{
|
|
// don't grab environment, to avoid circular references
|
|
Driver = Environment->getVideoDriver();
|
|
|
|
SpriteBank = Environment->addEmptySpriteBank(filename);
|
|
}
|
|
|
|
if (Driver)
|
|
Driver->grab();
|
|
}
|
|
|
|
|
|
|
|
//! destructor
|
|
CGUIFont::~CGUIFont()
|
|
{
|
|
if (Driver)
|
|
Driver->drop();
|
|
|
|
if (SpriteBank)
|
|
SpriteBank->drop();
|
|
|
|
}
|
|
|
|
//! loads a font file from xml
|
|
bool CGUIFont::load(io::IXMLReader* xml)
|
|
{
|
|
if (!SpriteBank)
|
|
return false;
|
|
|
|
while (xml->read())
|
|
{
|
|
if (io::EXN_ELEMENT == xml->getNodeType())
|
|
{
|
|
if (core::stringw(L"Texture") == xml->getNodeName())
|
|
{
|
|
// add a texture
|
|
core::stringc fn = xml->getAttributeValue(L"filename");
|
|
u32 i = (u32)xml->getAttributeValueAsInt(L"index");
|
|
core::stringw alpha = xml->getAttributeValue(L"hasAlpha");
|
|
|
|
while (i+1 > SpriteBank->getTextureCount())
|
|
SpriteBank->addTexture(0);
|
|
|
|
// disable mipmaps+filtering
|
|
bool mipmap = Driver->getTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS);
|
|
Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, false);
|
|
|
|
// load texture
|
|
SpriteBank->setTexture(i, Driver->getTexture(fn.c_str()));
|
|
|
|
// set previous mip-map+filter state
|
|
Driver->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS, mipmap);
|
|
|
|
// couldn't load texture, abort.
|
|
if (!SpriteBank->getTexture(i))
|
|
{
|
|
os::Printer::log("Unable to load all textures in the font, aborting", ELL_ERROR);
|
|
_IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX;
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
// colorkey texture rather than alpha channel?
|
|
if (alpha == core::stringw("false"))
|
|
Driver->makeColorKeyTexture(SpriteBank->getTexture(i), core::position2di(0,0));
|
|
}
|
|
}
|
|
else if (core::stringw(L"c") == xml->getNodeName())
|
|
{
|
|
// adding a character to this font
|
|
SFontArea a;
|
|
SGUISpriteFrame f;
|
|
SGUISprite s;
|
|
core::rect<s32> rectangle;
|
|
|
|
a.underhang = xml->getAttributeValueAsInt(L"u");
|
|
a.overhang = xml->getAttributeValueAsInt(L"o");
|
|
a.spriteno = SpriteBank->getSprites().size();
|
|
s32 texno = xml->getAttributeValueAsInt(L"i");
|
|
|
|
// parse rectangle
|
|
core::stringc rectstr = xml->getAttributeValue(L"r");
|
|
wchar_t ch = xml->getAttributeValue(L"c")[0];
|
|
|
|
const c8 *c = rectstr.c_str();
|
|
s32 val;
|
|
val = 0;
|
|
while (*c >= '0' && *c <= '9')
|
|
{
|
|
val *= 10;
|
|
val += *c - '0';
|
|
c++;
|
|
}
|
|
rectangle.UpperLeftCorner.X = val;
|
|
while (*c == L' ' || *c == L',') c++;
|
|
|
|
val = 0;
|
|
while (*c >= '0' && *c <= '9')
|
|
{
|
|
val *= 10;
|
|
val += *c - '0';
|
|
c++;
|
|
}
|
|
rectangle.UpperLeftCorner.Y = val;
|
|
while (*c == L' ' || *c == L',') c++;
|
|
|
|
val = 0;
|
|
while (*c >= '0' && *c <= '9')
|
|
{
|
|
val *= 10;
|
|
val += *c - '0';
|
|
c++;
|
|
}
|
|
rectangle.LowerRightCorner.X = val;
|
|
while (*c == L' ' || *c == L',') c++;
|
|
|
|
val = 0;
|
|
while (*c >= '0' && *c <= '9')
|
|
{
|
|
val *= 10;
|
|
val += *c - '0';
|
|
c++;
|
|
}
|
|
rectangle.LowerRightCorner.Y = val;
|
|
|
|
CharacterMap.insert(ch,Areas.size());
|
|
|
|
// make frame
|
|
f.rectNumber = SpriteBank->getPositions().size();
|
|
f.textureNumber = texno;
|
|
|
|
// add frame to sprite
|
|
s.Frames.push_back(f);
|
|
s.frameTime = 0;
|
|
|
|
// add rectangle to sprite bank
|
|
SpriteBank->getPositions().push_back(rectangle);
|
|
a.width = rectangle.getWidth();
|
|
|
|
// add sprite to sprite bank
|
|
SpriteBank->getSprites().push_back(s);
|
|
|
|
// add character to font
|
|
Areas.push_back(a);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// set bad character
|
|
WrongCharacter = getAreaFromCharacter(L' ');
|
|
|
|
setMaxHeight();
|
|
|
|
return true;
|
|
}
|
|
|
|
void CGUIFont::setMaxHeight()
|
|
{
|
|
MaxHeight = 0;
|
|
s32 t;
|
|
|
|
core::array< core::rect<s32> >& p = SpriteBank->getPositions();
|
|
|
|
for (u32 i=0; i<p.size(); ++i)
|
|
{
|
|
t = p[i].getHeight();
|
|
if (t>MaxHeight)
|
|
MaxHeight = t;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
//! loads a font file, native file needed, for texture parsing
|
|
bool CGUIFont::load(io::IReadFile* file)
|
|
{
|
|
if (!Driver)
|
|
return false;
|
|
|
|
return loadTexture(Driver->createImageFromFile(file),
|
|
file->getFileName());
|
|
}
|
|
|
|
//! loads a font file, native file needed, for texture parsing
|
|
bool CGUIFont::load(const c8* filename)
|
|
{
|
|
if (!Driver)
|
|
return false;
|
|
return loadTexture(Driver->createImageFromFile( filename ),
|
|
filename);
|
|
}
|
|
|
|
//! load & prepare font from ITexture
|
|
bool CGUIFont::loadTexture(video::IImage* image, const c8* name)
|
|
{
|
|
if (!image)
|
|
return false;
|
|
|
|
s32 lowerRightPositions = 0;
|
|
|
|
video::IImage* tmpImage=image;
|
|
bool deleteTmpImage=false;
|
|
switch(image->getColorFormat())
|
|
{
|
|
case video::ECF_R5G6B5:
|
|
tmpImage = new video::CImage(video::ECF_A1R5G5B5,image);
|
|
deleteTmpImage=true;
|
|
case video::ECF_A1R5G5B5:
|
|
readPositions16bit(tmpImage, lowerRightPositions);
|
|
break;
|
|
case video::ECF_R8G8B8:
|
|
tmpImage = new video::CImage(video::ECF_A8R8G8B8,image);
|
|
deleteTmpImage=true;
|
|
case video::ECF_A8R8G8B8:
|
|
readPositions32bit (tmpImage, lowerRightPositions);
|
|
break;
|
|
}
|
|
|
|
WrongCharacter = getAreaFromCharacter(L' ');
|
|
|
|
// output warnings
|
|
if (!lowerRightPositions || !SpriteBank->getSprites().size())
|
|
os::Printer::log("The amount of upper corner pixels or lower corner pixels is == 0, font file may be corrupted.", ELL_ERROR);
|
|
else
|
|
if (lowerRightPositions != (s32)SpriteBank->getPositions().size())
|
|
os::Printer::log("The amount of upper corner pixels and the lower corner pixels is not equal, font file may be corrupted.", ELL_ERROR);
|
|
|
|
bool ret = ( !SpriteBank->getSprites().empty() && lowerRightPositions );
|
|
|
|
|
|
if ( ret )
|
|
{
|
|
SpriteBank->addTexture(Driver->addTexture(name, tmpImage));
|
|
}
|
|
if (deleteTmpImage)
|
|
tmpImage->drop();
|
|
image->drop();
|
|
|
|
setMaxHeight();
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
void CGUIFont::readPositions32bit(video::IImage* image, s32& lowerRightPositions)
|
|
{
|
|
const core::dimension2d<s32>& size = image->getDimension();
|
|
|
|
s32* p = (s32*)image->lock();
|
|
if (!p)
|
|
{
|
|
os::Printer::log("Could not lock texture while preparing texture for a font.", ELL_ERROR);
|
|
return;
|
|
}
|
|
|
|
// TODO: Hack till it's getting better...
|
|
// Pixel(0,0) == half opacity assume font with alpha..
|
|
|
|
s32 truealphaFont = ( (p[0] & 0xFF000000) == 0x7f000000 );
|
|
p[0] |= 0xFF000000;
|
|
|
|
s32 colorTopLeft = p[0];
|
|
s32 colorLowerRight = *(p+1);
|
|
s32 colorBackGround = *(p+2);
|
|
s32 colorBackGroundTransparent = 0x00FFFFFF & colorBackGround;
|
|
s32 colorFont = 0xFFFFFFFF;
|
|
|
|
*(p+1) = colorBackGround;
|
|
|
|
// start parsing
|
|
|
|
core::position2d<s32> pos(0,0);
|
|
for (pos.Y=0; pos.Y<size.Height; ++pos.Y)
|
|
{
|
|
for (pos.X=0; pos.X<size.Width; ++pos.X)
|
|
{
|
|
if ( *p == colorTopLeft)
|
|
{
|
|
*p = colorBackGroundTransparent;
|
|
SpriteBank->getPositions().push_back(core::rect<s32>(pos, pos));
|
|
}
|
|
else
|
|
if (*p == colorLowerRight)
|
|
{
|
|
if (SpriteBank->getPositions().size()<=(u32)lowerRightPositions)
|
|
{
|
|
image->unlock();
|
|
lowerRightPositions = 0;
|
|
return;
|
|
}
|
|
|
|
*p = colorBackGroundTransparent;
|
|
SpriteBank->getPositions()[lowerRightPositions].LowerRightCorner = pos;
|
|
// add frame to sprite bank
|
|
SGUISpriteFrame f;
|
|
f.rectNumber = lowerRightPositions;
|
|
f.textureNumber = 0;
|
|
SGUISprite s;
|
|
s.Frames.push_back(f);
|
|
s.frameTime = 0;
|
|
SpriteBank->getSprites().push_back(s);
|
|
// add character to font
|
|
SFontArea a;
|
|
a.overhang = 0;
|
|
a.underhang = 0;
|
|
a.spriteno = lowerRightPositions;
|
|
a.width = SpriteBank->getPositions()[lowerRightPositions].getWidth();
|
|
Areas.push_back(a);
|
|
// map letter to character
|
|
wchar_t ch = (wchar_t)(lowerRightPositions + 32);
|
|
CharacterMap.set(ch, lowerRightPositions);
|
|
|
|
++lowerRightPositions;
|
|
}
|
|
else
|
|
if (*p == colorBackGround)
|
|
{
|
|
*p = colorBackGroundTransparent;
|
|
}
|
|
else
|
|
if ( 0 == truealphaFont )
|
|
{
|
|
*p = colorFont;
|
|
}
|
|
++p;
|
|
}
|
|
}
|
|
|
|
// Positions parsed.
|
|
|
|
image->unlock();
|
|
}
|
|
|
|
|
|
|
|
|
|
void CGUIFont::readPositions16bit(video::IImage* image, s32& lowerRightPositions)
|
|
{
|
|
core::dimension2d<s32> size = image->getDimension();
|
|
|
|
s16* p = (s16*)image->lock();
|
|
if (!p)
|
|
{
|
|
os::Printer::log("Could not lock texture while preparing texture for a font.", ELL_ERROR);
|
|
return;
|
|
}
|
|
|
|
s16 truealphaFont = ( (p[0] & 0x8000) == 0x8000 );
|
|
p[0] |= 0x8000;
|
|
|
|
s16 colorTopLeft = p[0];;
|
|
s16 colorLowerRight = *(p+1);
|
|
s16 colorBackGround = *(p+2);
|
|
s16 colorBackGroundTransparent = 0x7FFF & colorBackGround;
|
|
u16 colorFont = 0xFFFF;
|
|
|
|
*(p+1) = colorBackGround;
|
|
|
|
// start parsing
|
|
|
|
core::position2d<s32> pos(0,0);
|
|
for (pos.Y=0; pos.Y<size.Height; ++pos.Y)
|
|
{
|
|
for (pos.X=0; pos.X<size.Width; ++pos.X)
|
|
{
|
|
if (*p == colorTopLeft)
|
|
{
|
|
*p = colorBackGroundTransparent;
|
|
SpriteBank->getPositions().push_back(core::rect<s32>(pos, pos));
|
|
}
|
|
else
|
|
if (*p == colorLowerRight)
|
|
{
|
|
// too many lower right points
|
|
if (SpriteBank->getPositions().size()<=(u32)lowerRightPositions)
|
|
{
|
|
image->unlock();
|
|
lowerRightPositions = 0;
|
|
return;
|
|
}
|
|
|
|
*p = colorBackGroundTransparent;
|
|
SpriteBank->getPositions()[lowerRightPositions].LowerRightCorner = pos;
|
|
// add frame to sprite bank
|
|
SGUISpriteFrame f;
|
|
f.rectNumber = lowerRightPositions;
|
|
f.textureNumber = 0;
|
|
SGUISprite s;
|
|
s.Frames.push_back(f);
|
|
s.frameTime = 0;
|
|
SpriteBank->getSprites().push_back(s);
|
|
// add character to font
|
|
SFontArea a;
|
|
a.overhang = 0;
|
|
a.underhang = 0;
|
|
a.spriteno = lowerRightPositions;
|
|
a.width = SpriteBank->getPositions()[lowerRightPositions].getWidth();
|
|
Areas.push_back(a);
|
|
// map letter to character
|
|
wchar_t ch = (wchar_t)(lowerRightPositions + 32);
|
|
CharacterMap.set(ch, lowerRightPositions);
|
|
|
|
++lowerRightPositions;
|
|
}
|
|
else
|
|
if (*p == colorBackGround)
|
|
*p = colorBackGroundTransparent;
|
|
else
|
|
if ( 0 == truealphaFont )
|
|
{
|
|
*p = colorFont;
|
|
}
|
|
++p;
|
|
}
|
|
}
|
|
|
|
// Positions parsed.
|
|
|
|
image->unlock();
|
|
}
|
|
|
|
|
|
//! returns the dimension of text
|
|
core::dimension2d<s32> CGUIFont::getDimension(const wchar_t* text)
|
|
{
|
|
core::dimension2d<s32> dim(0, 0);
|
|
core::dimension2d<s32> 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
//! set an Pixel Offset on Drawing ( scale position on width )
|
|
void CGUIFont::setKerningWidth ( s32 kerning )
|
|
{
|
|
GlobalKerningWidth = kerning;
|
|
}
|
|
|
|
//! set an Pixel Offset on Drawing ( scale position on width )
|
|
s32 CGUIFont::getKerningWidth(const wchar_t* thisLetter, const wchar_t* previousLetter)
|
|
{
|
|
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 ()
|
|
{
|
|
return GlobalKerningHeight;
|
|
}
|
|
|
|
//! returns the sprite number from a given character
|
|
u32 CGUIFont::getSpriteNoFromChar(const wchar_t *c)
|
|
{
|
|
return Areas[getAreaFromCharacter(*c)].spriteno;
|
|
}
|
|
|
|
|
|
s32 CGUIFont::getAreaFromCharacter(const wchar_t c)
|
|
{
|
|
core::map<wchar_t, s32>::Node* n = CharacterMap.find(c);
|
|
if (n)
|
|
return n->getValue();
|
|
else
|
|
return WrongCharacter;
|
|
}
|
|
|
|
/*
|
|
//! draws an text and clips it to the specified rectangle if wanted
|
|
void CGUIFont::draw(const wchar_t* text, const core::rect<s32>& position, video::SColor color, bool hcenter, bool vcenter, const core::rect<s32>* clip)
|
|
{
|
|
if (!Driver)
|
|
return;
|
|
|
|
core::dimension2d<s32> textDimension;
|
|
core::position2d<s32> offset = position.UpperLeftCorner;
|
|
|
|
if (hcenter || vcenter)
|
|
{
|
|
textDimension = getDimension(text);
|
|
|
|
if (hcenter)
|
|
offset.X = ((position.getWidth() - textDimension.Width)>>1) + offset.X;
|
|
|
|
if (vcenter)
|
|
offset.Y = ((position.getHeight() - textDimension.Height)>>1) + offset.Y;
|
|
}
|
|
|
|
core::array<s32> indices;
|
|
indices.reallocate(core::stringw(text).size());
|
|
u32 n;
|
|
while(*text)
|
|
{
|
|
n = (*text) - 32;
|
|
if ( n > Positions.size())
|
|
n = WrongCharacter;
|
|
indices.push_back(n);
|
|
++text;
|
|
}
|
|
Driver->draw2DImage(Texture, offset, Positions, indices, GlobalKerningWidth, clip, color, true);
|
|
}
|
|
*/
|
|
|
|
|
|
//! draws some text and clips it to the specified rectangle if wanted
|
|
void CGUIFont::draw(const wchar_t* text, const core::rect<s32>& position, video::SColor color, bool hcenter, bool vcenter, const core::rect<s32>* clip)
|
|
{
|
|
if (!Driver)
|
|
return;
|
|
|
|
core::dimension2d<s32> textDimension;
|
|
core::position2d<s32> offset = position.UpperLeftCorner;
|
|
core::rect<s32> pos;
|
|
|
|
if (hcenter || vcenter || clip)
|
|
textDimension = getDimension(text);
|
|
|
|
if (hcenter)
|
|
offset.X = ((position.getWidth() - textDimension.Width)>>1) + offset.X;
|
|
|
|
if (vcenter)
|
|
offset.Y = ((position.getHeight() - textDimension.Height)>>1) + offset.Y;
|
|
|
|
if (clip)
|
|
{
|
|
core::rect<s32> clippedRect(offset, textDimension);
|
|
clippedRect.clipAgainst(*clip);
|
|
if (!clippedRect.isValid())
|
|
return;
|
|
}
|
|
|
|
while(*text)
|
|
{
|
|
SFontArea& area = Areas[getAreaFromCharacter(*text)];
|
|
|
|
offset.X += area.underhang;
|
|
|
|
SpriteBank->draw2DSprite(area.spriteno, offset, clip, color);
|
|
|
|
offset.X += area.width + area.overhang + GlobalKerningWidth;
|
|
|
|
++text;
|
|
}
|
|
}
|
|
|
|
//! 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)
|
|
{
|
|
s32 x = 0;
|
|
s32 idx = 0;
|
|
|
|
while (text[idx])
|
|
{
|
|
SFontArea &a = Areas[getAreaFromCharacter(text[idx])];
|
|
|
|
x += a.width + a.overhang + a.underhang;
|
|
|
|
if (x >= pixel_x)
|
|
return idx;
|
|
|
|
++idx;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
IGUISpriteBank* CGUIFont::getSpriteBank()
|
|
{
|
|
return SpriteBank;
|
|
}
|
|
|
|
} // end namespace gui
|
|
} // end namespace irr
|