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irrlicht/tools/IrrFontTool/newFontTool/CFontTool.cpp

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#include "CFontTool.h"
#include "IXMLWriter.h"
using namespace irr;
const int fontsizes[] = {4,6,8,9,10,11,12,14,16,18,20,22,24,26,28,36,48,56,68,72,0};
inline u32 getTextureSizeFromSurfaceSize(u32 size)
{
u32 ts = 0x01;
while(ts < size)
ts <<= 1;
return ts;
}
// windows specific
#ifdef _IRR_WINDOWS_
const DWORD charsets[] = { ANSI_CHARSET, DEFAULT_CHARSET, OEM_CHARSET, BALTIC_CHARSET, GB2312_CHARSET, CHINESEBIG5_CHARSET,
EASTEUROPE_CHARSET, GREEK_CHARSET, HANGUL_CHARSET, MAC_CHARSET, RUSSIAN_CHARSET,
SHIFTJIS_CHARSET, SYMBOL_CHARSET, TURKISH_CHARSET, VIETNAMESE_CHARSET, JOHAB_CHARSET,
ARABIC_CHARSET, HEBREW_CHARSET, THAI_CHARSET, 0};
const wchar_t *setnames[] = {L"ANSI", L"All Available", L"OEM", L"Baltic", L"Chinese Simplified", L"Chinese Traditional",
L"Eastern European", L"Greek", L"Hangul", L"Macintosh", L"Russian",
L"Japanese", L"Symbol", L"Turkish", L"Vietnamese", L"Johab",
L"Arabic", L"Hebrew", L"Thai", 0};
// callback for adding font names
int CALLBACK EnumFontFamExProc( ENUMLOGFONTEX *lpelfe, NEWTEXTMETRICEX *lpntme,
DWORD FontType, LPARAM lParam)
{
CFontTool* t = (CFontTool*) lParam;
t->FontNames.push_back( core::stringw(lpelfe->elfFullName));
return 1;
}
//
// Constructor
//
CFontTool::CFontTool(IrrlichtDevice* device) : FontSizes(fontsizes),
Device(device), UseAlphaChannel(false),
// win specific
dc(0)
{
// init display context
dc = CreateDC(L"DISPLAY", L"DISPLAY", 0 ,0 );
// populate list of available character set names
for (int i=0; setnames[i] != 0; ++i)
CharSets.push_back( core::stringw(setnames[i]));
selectCharSet(0);
}
void CFontTool::selectCharSet(u32 currentCharSet)
{
if ( currentCharSet >= CharSets.size() )
return;
LOGFONTW lf;
lf.lfFaceName[0] = L'\0';
lf.lfCharSet = (BYTE) charsets[currentCharSet];
// HRESULT hr; // no error checking(!)
// clear font list
FontNames.clear();
// create list of available fonts
EnumFontFamiliesExW( dc, (LPLOGFONTW) &lf, (FONTENUMPROCW) EnumFontFamExProc, (LPARAM) this, 0);
}
bool CFontTool::makeBitmapFont(u32 fontIndex, u32 charsetIndex, s32 fontSize, u32 textureWidth, u32 textureHeight, bool bold, bool italic, bool aa, bool alpha)
{
if (fontIndex >= FontNames.size() || charsetIndex >= CharSets.size() )
return false;
UseAlphaChannel = alpha;
u32 currentImage = 0;
// create the font
HFONT font = CreateFontW(
-MulDiv(fontSize, GetDeviceCaps(dc, LOGPIXELSY), 72), 0,
0,0,
bold ? FW_BOLD : 0,
italic, 0,0, charsets[charsetIndex], 0,0,
aa ? ANTIALIASED_QUALITY : 0,
0, FontNames[fontIndex].c_str() );
if (!font)
return false;
SelectObject(dc, font);
SetTextAlign (dc,TA_LEFT | TA_TOP | TA_NOUPDATECP);
// get rid of the current textures/images
for (u32 i=0; i<currentTextures.size(); ++i)
currentTextures[i]->drop();
currentTextures.clear();
for (u32 i=0; i<currentImages.size(); ++i)
currentImages[i]->drop();
currentImages.clear();
// clear current image mappings
CharMap.clear();
// clear array
Areas.clear();
// get information about this font's unicode ranges.
s32 size = GetFontUnicodeRanges( dc, 0);
c8 *buf = new c8[size];
LPGLYPHSET glyphs = (LPGLYPHSET)buf;
GetFontUnicodeRanges( dc, glyphs);
// s32 TotalCharCount = glyphs->cGlyphsSupported;
s32 currentx=0, currenty=0, maxy=0;
for (u32 range=0; range < glyphs->cRanges; range++)
{
WCRANGE* current = &glyphs->ranges[range];
//maxy=0;
// loop through each glyph and write its size and position
for (s32 ch=current->wcLow; ch< current->wcLow + current->cGlyphs; ch++)
{
wchar_t currentchar = ch;
if ( IsDBCSLeadByte((BYTE) ch))
continue; // surrogate pairs unsupported
// get the dimensions
SIZE size;
ABC abc;
GetTextExtentPoint32W(dc, &currentchar, 1, &size);
SFontArea fa;
fa.underhang = 0;
fa.overhang = 0;
if (GetCharABCWidthsW(dc, currentchar, currentchar, &abc)) // for unicode fonts, get overhang, underhang, width
{
size.cx = abc.abcB; // full font width (ignoring padding/underhang )
fa.underhang = abc.abcA; // underhang/padding left - can also be negative (in which case it's overhang left)
fa.overhang = abc.abcC; // overhang/padding right - can also be negative (in which case it's underhand right)
if (abc.abcB-abc.abcA+abc.abcC<1)
continue; // nothing of width 0
}
if (size.cy < 1)
continue;
//GetGlyphOutline(dc, currentchar, GGO_METRICS, &gm, 0, 0, 0);
//size.cx++; size.cy++;
// wrap around?
if (currentx + size.cx > (s32) textureWidth)
{
currenty += maxy;
currentx = 0;
if ((u32)(currenty + maxy) > textureHeight)
{
currentImage++; // increase Image count
currenty=0;
}
maxy = 0;
}
// add this char dimension to the current map
fa.rectangle = core::rect<s32>(currentx, currenty, currentx + size.cx, currenty + size.cy);
fa.sourceimage = currentImage;
CharMap.insert(currentchar, Areas.size());
Areas.push_back( fa );
currentx += size.cx +1;
if (size.cy+1 > maxy)
maxy = size.cy+1;
}
}
currenty += maxy;
u32 lastTextureHeight = getTextureSizeFromSurfaceSize(currenty);
// delete the glyph set
delete [] buf;
currentImages.set_used(currentImage+1);
currentTextures.set_used(currentImage+1);
for (currentImage=0; currentImage < currentImages.size(); ++currentImage)
{
core::stringc logmsg = "Creating image ";
logmsg += (s32) (currentImage+1);
logmsg += " of ";
logmsg += (s32) currentImages.size();
Device->getLogger()->log(logmsg.c_str());
// no need for a huge final texture
u32 texHeight = textureHeight;
if (currentImage == currentImages.size()-1 )
texHeight = lastTextureHeight;
// make a new bitmap
HBITMAP bmp = CreateCompatibleBitmap(dc, textureWidth, texHeight);
HDC bmpdc = CreateCompatibleDC(dc);
LOGBRUSH lbrush;
lbrush.lbColor = RGB(0,0,0);
lbrush.lbHatch = 0;
lbrush.lbStyle = BS_SOLID;
HBRUSH brush = CreateBrushIndirect(&lbrush);
HPEN pen = CreatePen(PS_NULL, 0, 0);
HGDIOBJ oldbmp = SelectObject(bmpdc, bmp);
HGDIOBJ oldbmppen = SelectObject(bmpdc, pen);
HGDIOBJ oldbmpbrush = SelectObject(bmpdc, brush);
HGDIOBJ oldbmpfont = SelectObject(bmpdc, font);
SetTextColor(bmpdc, RGB(255,255,255));
Rectangle(bmpdc, 0,0,textureWidth,texHeight);
SetBkMode(bmpdc, TRANSPARENT);
// draw the letters...
// iterate through the tree
core::map<wchar_t, u32>::Iterator it = CharMap.getIterator();
while (!it.atEnd())
{
s32 currentArea = (*it).getValue();
wchar_t wch = (*it).getKey();
// sloppy but I couldn't be bothered rewriting it
if (Areas[currentArea].sourceimage == currentImage)
{
// draw letter
s32 sx = Areas[currentArea].rectangle.UpperLeftCorner.X - Areas[currentArea].underhang;
TextOutW(bmpdc, sx, Areas[currentArea].rectangle.UpperLeftCorner.Y, &wch, 1);
// if ascii font...
//SetPixel(bmpdc, Areas[currentArea].rectangle.UpperLeftCorner.X, Areas[currentArea].rectangle.UpperLeftCorner.Y, RGB(255,255,0));// left upper corner mark
}
it++;
}
// copy the font bitmap into a new irrlicht image
BITMAP b;
PBITMAPINFO pbmi;
WORD cClrBits;
u32 cformat;
// Retrieve the bitmap color format, width, and height.
GetObject(bmp, sizeof(BITMAP), (LPSTR)&b);
// Convert the color format to a count of bits.
cClrBits = (WORD)(b.bmPlanes * b.bmBitsPixel);
if (cClrBits <= 8) // we're not supporting these
cformat = -1;
else if (cClrBits <= 16)
cformat = video::ECF_A1R5G5B5;
else if (cClrBits <= 24)
cformat = video::ECF_R8G8B8;
else
cformat = video::ECF_A8R8G8B8;
pbmi = (PBITMAPINFO) LocalAlloc(LPTR,
sizeof(BITMAPINFOHEADER));
// Initialize the fields in the BITMAPINFO structure.
pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
pbmi->bmiHeader.biWidth = b.bmWidth;
pbmi->bmiHeader.biHeight = b.bmHeight;
pbmi->bmiHeader.biPlanes = b.bmPlanes;
pbmi->bmiHeader.biBitCount = b.bmBitsPixel;
// If the bitmap is not compressed, set the BI_RGB flag.
pbmi->bmiHeader.biCompression = BI_RGB;
// Compute the number of bytes in the array of color
// indices and store the result in biSizeImage.
// For Windows NT, the width must be DWORD aligned unless
// the bitmap is RLE compressed. This example shows this.
// For Windows 95/98/Me, the width must be WORD aligned unless the
// bitmap is RLE compressed.
pbmi->bmiHeader.biSizeImage = ((pbmi->bmiHeader.biWidth * cClrBits +31) & ~31) /8
* pbmi->bmiHeader.biHeight;
// Set biClrImportant to 0, indicating that all of the
// device colors are important.
pbmi->bmiHeader.biClrImportant = 0;
LPBYTE lpBits; // memory pointer
PBITMAPINFOHEADER pbih = (PBITMAPINFOHEADER) pbmi;
lpBits = (LPBYTE) GlobalAlloc(GMEM_FIXED, pbih->biSizeImage);
GetDIBits(dc, bmp, 0, (WORD) pbih->biHeight, lpBits, pbmi, DIB_RGB_COLORS);
// DEBUG- copy to clipboard
//OpenClipboard(hWnd);
//EmptyClipboard();
//SetClipboardData(CF_BITMAP, bmp);
//CloseClipboard();
// flip bitmap
s32 rowsize = ((pbmi->bmiHeader.biWidth * cClrBits +31) & ~31) /8;
c8 *row = new c8[rowsize];
for (s32 i=0; i < (pbih->biHeight/2); ++i)
{
// grab a row
memcpy(row, lpBits + (rowsize * i), rowsize);
// swap row
memcpy(lpBits + (rowsize * i), lpBits + ((pbih->biHeight-1 -i) * rowsize ) , rowsize);
memcpy(lpBits + ((pbih->biHeight-1 -i) * rowsize ), row , rowsize);
}
bool ret = false;
if (cformat == video::ECF_A8R8G8B8)
{
// in this case the font should have an alpha channel, but since windows doesn't draw one
// we have to set one manually by going through all the pixels.. *sigh*
u8* m;
for (m = lpBits; m < lpBits + pbih->biSizeImage; m+=4)
{
if (UseAlphaChannel)
{
if (m[0] > 0) // pixel has colour
{
m[3]=m[0]; // set alpha
m[0]=m[1]=m[2] = 255; // everything else is full
}
}
else
m[3]=255; // all pixels are full alpha
}
}
else if (cformat == video::ECF_A1R5G5B5)
{
u8* m;
for (m = lpBits; m < lpBits + pbih->biSizeImage; m+=2)
{
WORD *p = (WORD*)m;
if (m[0] > 0 || !UseAlphaChannel) // alpha should be set
*p |= 0x8000; // set alpha bit
}
}
else
{
cformat = -1;
}
// make a texture from the image
if (cformat != -1)
{
// turn mip-mapping off
bool b = Device->getVideoDriver()->getTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS);
currentImages[currentImage] = Device->getVideoDriver()->createImageFromData((video::ECOLOR_FORMAT)cformat, core::dimension2d<u32>(textureWidth,texHeight), (void*)lpBits);
Device->getVideoDriver()->setTextureCreationFlag(video::ETCF_CREATE_MIP_MAPS,b);
}
else
{
Device->getLogger()->log("Couldn't create font, your pixel format is unsupported.");
}
// free memory and windows resources
// sloppy I know, but I only intended to create one image at first.
delete [] row;
LocalFree(pbmi);
GlobalFree(lpBits);
DeleteDC(bmpdc);
DeleteObject(brush);
DeleteObject(pen);
DeleteObject(bmp);
if (currentImages[currentImage])
{
// add texture
currentTextures[currentImage] = Device->getVideoDriver()->addTexture("GUIFontImage",currentImages[currentImage]);
currentTextures[currentImage]->grab();
}
else
{
Device->getLogger()->log("Something went wrong, aborting.");
// drop all images
DeleteObject(font);
return false;
}
} // looping through each texture
DeleteObject(font);
return true;
}
#else
CFontTool::CFontTool(IrrlichtDevice *device) : FontSizes(fontsizes), Device(device), UseAlphaChannel(false)
{
if (!XftInitFtLibrary())
{
core::stringc logmsg = "XFT not found\n";
Device->getLogger()->log(logmsg.c_str());
exit(EXIT_FAILURE);
}
/* Get a list of the font foundries, storing them in a set to sort */
std::set<core::stringw> foundries;
Display* display = (Display*)Device->getVideoDriver()->getExposedVideoData().OpenGLLinux.X11Display;
XftFontSet* fonts = XftListFonts(display, DefaultScreen(display), 0, XFT_FOUNDRY, 0);
for (int i = 0; i < fonts->nfont; i++)
{
char *foundry;
XftPatternGetString(fonts->fonts[i], XFT_FOUNDRY, 0, &foundry);
core::stringw tmp(foundry);
foundries.insert(tmp);
}
XftFontSetDestroy(fonts);
/* Copy the sorted list into the array */
CharSets.clear();
for (std::set<core::stringw>::iterator i = foundries.begin(); i != foundries.end(); i++)
CharSets.push_back((*i).c_str());
selectCharSet(0);
}
/* Note: There must be some trick for using strings as pattern parameters to XftListFonts because
no matter how I specify a string, I end up with an intermittent segfault. Since XftFontList is
just calling FcFontList, that's what I'll do too since that works OK */
void CFontTool::selectCharSet(u32 currentCharSet)
{
/* Get a list of the font families, storing them in a set to sort */
char foundry[256];
sprintf(&foundry[0],"%ls",CharSets[currentCharSet].c_str());
std::set<core::stringw> families;
XftPattern *pattern = FcPatternCreate();
XftPatternAddString(pattern, FC_FOUNDRY, &foundry[0]);
XftObjectSet *objectset = FcObjectSetCreate();
XftObjectSetAdd(objectset, XFT_FOUNDRY);
XftObjectSetAdd(objectset, XFT_FAMILY);
FcFontSet *fonts = FcFontList(NULL, pattern, objectset);
for (int i = 0; i < fonts->nfont; i++)
{
char* ptr;
XftPatternGetString(fonts->fonts[i], XFT_FAMILY, 0, &ptr);
core::stringw family(ptr);
families.insert(family);
}
XftPatternDestroy(pattern);
FcObjectSetDestroy(objectset);
/* Copy the sorted list into the array */
FontNames.clear();
for (std::set<core::stringw>::iterator i = families.begin(); i != families.end(); i++)
FontNames.push_back((*i).c_str());
}
bool CFontTool::makeBitmapFont(u32 fontIndex, u32 charsetIndex, s32 fontSize, u32 textureWidth, u32 textureHeight, bool bold, bool italic, bool aa, bool alpha)
{
if (fontIndex >= FontNames.size() || charsetIndex >= CharSets.size() )
return false;
Display *display = (Display*) Device->getVideoDriver()->getExposedVideoData().OpenGLLinux.X11Display;
u32 screen = DefaultScreen(display);
Window win = RootWindow(display, screen);
Visual *visual = DefaultVisual(display, screen);
UseAlphaChannel = alpha;
u32 currentImage = 0;
XftResult result;
XftPattern *request = XftPatternCreate();
char foundry[256], family[256];
sprintf(&foundry[0],"%ls",CharSets[charsetIndex].c_str());
sprintf(&family[0],"%ls",FontNames[fontIndex].c_str());
XftPatternAddString(request, XFT_FOUNDRY, &foundry[0]);
XftPatternAddString(request, XFT_FAMILY, &family[0]);
XftPatternAddInteger(request, XFT_PIXEL_SIZE, fontSize);
XftPatternAddInteger(request, XFT_WEIGHT, bold ? XFT_WEIGHT_BLACK : XFT_WEIGHT_LIGHT);
XftPatternAddInteger(request, XFT_SLANT, italic ? XFT_SLANT_ITALIC : XFT_SLANT_ROMAN);
XftPatternAddBool(request, XFT_ANTIALIAS, aa);
/* Find the closest font that matches the user choices and open it and check if the returned
font has anti aliasing enabled by default, even if it wasn't requested */
FcBool aaEnabled;
XftPattern *found = XftFontMatch(display, DefaultScreen(display), request, &result);
XftPatternGetBool(found, XFT_ANTIALIAS, 0, &aaEnabled);
aa = aaEnabled;
XftFont *font = XftFontOpenPattern(display, found);
// get rid of the current textures/images
for (u32 i=0; i<currentTextures.size(); ++i)
currentTextures[i]->drop();
currentTextures.clear();
for (u32 i=0; i<currentImages.size(); ++i)
currentImages[i]->drop();
currentImages.clear();
CharMap.clear();
Areas.clear();
/* Calculate the max height of the font. Annoyingly, it seems that the height property of the font
is the maximum height of any single character, but a string of characters, aligned along their
baselines, can exceed this figure. Because I don't know any better way of doing it, I'm going to
have to use the brute force method.
Note: There will be a certain number of charters in a font, however they may not be grouped
consecutively, and could in fact be spread out with many gaps */
u32 maxY = 0;
u32 charsFound = 0;
for (FT_UInt charCode = 0; charsFound < FcCharSetCount(font->charset); charCode++)
{
if (!XftCharExists(display, font, charCode))
continue;
charsFound++;
XGlyphInfo extents;
XftTextExtents32(display, font, &charCode, 1, &extents);
if ((extents.xOff <= 0) && (extents.height <= 0))
continue;
/* Calculate the width and height, adding 1 extra pixel if anti aliasing is enabled */
u32 chWidth = extents.xOff + (aa ? 1 : 0);
u32 chHeight = (font->ascent - extents.y + extents.height) + (aa ? 1 : 0);
if (chHeight > maxY)
maxY = chHeight;
/* Store the character details here */
SFontArea fontArea;
fontArea.rectangle = core::rect<s32>(0, 0, chWidth, chHeight);
CharMap.insert(charCode, Areas.size());
Areas.push_back(fontArea);
}
core::stringc logmsg = "Found ";
logmsg += (s32) (CharMap.size() + 1);
logmsg += " characters";
Device->getLogger()->log(logmsg.c_str());
/* Get the size of the chars and allocate them a position on a texture. If the next character that
is added would be outside the width or height of the texture, then a new texture is added */
u32 currentX = 0, currentY = 0, rowY = 0;
for (core::map<wchar_t, u32>::Iterator it = CharMap.getIterator(); !it.atEnd(); it++)
{
s32 currentArea = (*it).getValue();
SFontArea *fontArea = &Areas[currentArea];
u32 chWidth = fontArea->rectangle.LowerRightCorner.X;
u32 chHeight = fontArea->rectangle.LowerRightCorner.Y;
/* If the width of this char will exceed the textureWidth then start a new row */
if ((currentX + chWidth) > textureWidth)
{
currentY += rowY;
currentX = 0;
/* If the new row added to the texture exceeds the textureHeight then start a new texture */
if ((currentY + rowY) > textureHeight)
{
currentImage++;
currentY = 0;
}
rowY = 0;
}
/* Update the area with the current x and y and texture */
fontArea->rectangle = core::rect<s32>(currentX, currentY, currentX + chWidth, currentY + chHeight);
fontArea->sourceimage = currentImage;
currentX += chWidth + 1;
if (chHeight + 1 > rowY)
rowY = chHeight + 1;
}
/* The last row of chars and the last texture weren't accounted for in the loop, so add them here */
currentY += rowY;
u32 lastTextureHeight = getTextureSizeFromSurfaceSize(currentY);
currentImages.set_used(currentImage + 1);
currentTextures.set_used(currentImage + 1);
/* Initialise colours */
XftColor colFore, colBack;
XRenderColor xFore = {0xffff, 0xffff, 0xffff, 0xffff};
XRenderColor xBack = {0x0000, 0x0000, 0x0000, 0xffff};
XftColorAllocValue(display, DefaultVisual(display, screen), DefaultColormap(display, screen), &xFore, &colFore);
XftColorAllocValue(display, DefaultVisual(display, screen), DefaultColormap(display, screen), &xBack, &colBack);
/* Create a pixmap that is large enough to hold any character in the font */
Pixmap pixmap = XCreatePixmap(display, win, textureWidth, maxY, DefaultDepth(display, screen));
XftDraw *draw = XftDrawCreate(display, pixmap, visual, DefaultColormap(display, screen));
/* Render the chars */
for (currentImage = 0; currentImage < currentImages.size(); ++currentImage)
{
core::stringc logmsg = "Creating image ";
logmsg += (s32) (currentImage+1);
logmsg += " of ";
logmsg += (s32) currentImages.size();
Device->getLogger()->log(logmsg.c_str());
/* The last texture that is saved is vertically shrunk to fit the characters drawn on it */
u32 texHeight = textureHeight;
if (currentImage == currentImages.size() - 1)
texHeight = lastTextureHeight;
/* The texture that holds this "page" of characters */
currentImages[currentImage] = Device->getVideoDriver()->createImage(video::ECF_A8R8G8B8, core::dimension2du(textureWidth, texHeight));
currentImages[currentImage]->fill(video::SColor(alpha ? 0 : 255,0,0,0));
for (core::map<wchar_t, u32>::Iterator it = CharMap.getIterator(); !it.atEnd(); it++)
{
FcChar32 wch = (*it).getKey();
s32 currentArea = (*it).getValue();
if (Areas[currentArea].sourceimage == currentImage)
{
SFontArea *fontArea = &Areas[currentArea];
u32 chWidth = fontArea->rectangle.LowerRightCorner.X - fontArea->rectangle.UpperLeftCorner.X;
u32 chHeight = fontArea->rectangle.LowerRightCorner.Y - fontArea->rectangle.UpperLeftCorner.Y;
/* Draw the glyph onto the pixmap */
XGlyphInfo extents;
XftDrawRect(draw, &colBack, 0, 0, chWidth, chHeight);
XftTextExtents32(display, font, &wch, 1, &extents);
XftDrawString32(draw, &colFore, font, extents.x, extents.y, &wch, 1);
/* Convert the pixmap into an image, then copy it onto the Irrlicht texture, pixel by pixel.
There's bound to be a faster way, but this is adequate */
u32 xDest = fontArea->rectangle.UpperLeftCorner.X;
u32 yDest = fontArea->rectangle.UpperLeftCorner.Y + font->ascent - extents.y;
XImage *image = XGetImage(display, pixmap, 0, 0, chWidth, chHeight, 0xffffff, XYPixmap);
if (image)
{
for (u32 ySrc = 0; ySrc < chHeight; ySrc++)
for (u32 xSrc = 0; xSrc < chWidth; xSrc++)
{
/* Get the pixel colour and break it down into rgb components */
u32 col = XGetPixel(image, xSrc, ySrc);
u32 a = 255;
u32 r = col & visual->red_mask;
u32 g = col & visual->green_mask;
u32 b = col & visual->blue_mask;
while (r > 0xff) r >>= 8;
while (g > 0xff) g >>= 8;
while (b > 0xff) b >>= 8;
/* To make the background transparent, set the colour to 100% white and the alpha to
the average of the three rgb colour components to maintain the anti-aliasing */
if (alpha)
{
a = (r + g + b) / 3;
r = 255;
g = 255;
b = 255;
}
currentImages[currentImage]->setPixel(xDest + xSrc,yDest + ySrc,video::SColor(a,r,g,b));
}
image->f.destroy_image(image);
}
}
}
/* Add the texture to the list */
currentTextures[currentImage] = Device->getVideoDriver()->addTexture("GUIFontImage",currentImages[currentImage]);
currentTextures[currentImage]->grab();
}
XftColorFree (display, visual, DefaultColormap(display, screen), &colFore);
XftColorFree (display, visual, DefaultColormap(display, screen), &colBack);
XftFontClose(display,font);
XftPatternDestroy(request);
XftDrawDestroy(draw);
XFreePixmap(display, pixmap);
return true;
}
#endif
CFontTool::~CFontTool()
{
#ifdef _IRR_WINDOWS_
// destroy display context
if (dc)
DeleteDC(dc);
#endif
// drop textures+images
for (u32 i=0; i<currentTextures.size(); ++i)
currentTextures[i]->drop();
currentTextures.clear();
for (u32 i=0; i<currentImages.size(); ++i)
currentImages[i]->drop();
currentImages.clear();
}
bool CFontTool::saveBitmapFont(const c8 *filename, const c8* format)
{
if (currentImages.size() == 0)
{
Device->getLogger()->log("No image data to write, aborting.");
return false;
}
core::stringc fn = filename;
core::stringc imagename = filename;
fn += ".xml";
io::IXMLWriter *writer = Device->getFileSystem()->createXMLWriter(fn.c_str());
// header and line breaks
writer->writeXMLHeader();
writer->writeLineBreak();
// write information
writer->writeElement(L"font", false, L"type", L"bitmap");
writer->writeLineBreak();
writer->writeLineBreak();
// write images and link to them
for (u32 i=0; i<currentImages.size(); ++i)
{
imagename = filename;
imagename += (s32)i;
imagename += ".";
imagename += format;
Device->getVideoDriver()->writeImageToFile(currentImages[i],imagename.c_str());
writer->writeElement(L"Texture", true,
L"index", core::stringw(i).c_str(),
L"filename", core::stringw(imagename.c_str()).c_str(),
L"hasAlpha", UseAlphaChannel ? L"true" : L"false");
writer->writeLineBreak();
}
writer->writeLineBreak();
// write each character
core::map<wchar_t, u32>::Iterator it = CharMap.getIterator();
while (!it.atEnd())
{
SFontArea &fa = Areas[(*it).getValue()];
wchar_t c[2];
c[0] = (*it).getKey();
c[1] = L'\0';
core::stringw area, under, over, image;
area = core::stringw(fa.rectangle.UpperLeftCorner.X);
area += L", ";
area += fa.rectangle.UpperLeftCorner.Y;
area += L", ";
area += fa.rectangle.LowerRightCorner.X;
area += L", ";
area += fa.rectangle.LowerRightCorner.Y;
core::array<core::stringw> names;
core::array<core::stringw> values;
names.clear();
values.clear();
// char
names.push_back(core::stringw(L"c"));
values.push_back(core::stringw(c));
// image number
if (fa.sourceimage != 0)
{
image = core::stringw(fa.sourceimage);
names.push_back(core::stringw(L"i"));
values.push_back(image);
}
// rectangle
names.push_back(core::stringw(L"r"));
values.push_back(area);
if (fa.underhang != 0)
{
under = core::stringw(fa.underhang);
names.push_back(core::stringw(L"u"));
values.push_back(under);
}
if (fa.overhang != 0)
{
over = core::stringw(fa.overhang);
names.push_back(core::stringw(L"o"));
values.push_back(over);
}
writer->writeElement(L"c", true, names, values);
writer->writeLineBreak();
it++;
}
writer->writeClosingTag(L"font");
writer->drop();
Device->getLogger()->log("Bitmap font saved.");
return true;
}
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