diff options
| -rw-r--r-- | src/mesa/drivers/windows/wgl.c | 142 |
1 files changed, 135 insertions, 7 deletions
diff --git a/src/mesa/drivers/windows/wgl.c b/src/mesa/drivers/windows/wgl.c index 82df9a3258b..c9b6f649ea3 100644 --- a/src/mesa/drivers/windows/wgl.c +++ b/src/mesa/drivers/windows/wgl.c @@ -1,4 +1,4 @@ -/* $Id: wgl.c,v 1.6 2001/05/09 20:45:00 brianp Exp $ */ +/* $Id: wgl.c,v 1.7 2001/07/27 14:03:55 brianp Exp $ */ /* * This library is free software; you can redistribute it and/or @@ -247,6 +247,116 @@ static FIXED FixedFromDouble(double d) return *(FIXED *)&l; } + +/* +** This is cribbed from FX/fxwgl.c, and seems to implement support +** for bitmap fonts where the wglUseFontBitmapsA() code implements +** support for outline fonts. In combination they hopefully give +** fairly generic support for fonts. +*/ +static BOOL wglUseFontBitmaps_FX(HDC fontDevice, DWORD firstChar, + DWORD numChars, DWORD listBase) +{ +#define VERIFY(a) a + + TEXTMETRIC metric; + BITMAPINFO *dibInfo; + HDC bitDevice; + COLORREF tempColor; + int i; + + VERIFY(GetTextMetrics(fontDevice, &metric)); + + dibInfo = (BITMAPINFO *) calloc(sizeof(BITMAPINFO) + sizeof(RGBQUAD), 1); + dibInfo->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + dibInfo->bmiHeader.biPlanes = 1; + dibInfo->bmiHeader.biBitCount = 1; + dibInfo->bmiHeader.biCompression = BI_RGB; + + bitDevice = CreateCompatibleDC(fontDevice); + // HDC bitDevice = CreateDC("DISPLAY", NULL, NULL, NULL); + // VERIFY(bitDevice); + + // Swap fore and back colors so the bitmap has the right polarity + tempColor = GetBkColor(bitDevice); + SetBkColor(bitDevice, GetTextColor(bitDevice)); + SetTextColor(bitDevice, tempColor); + + // Place chars based on base line + VERIFY(SetTextAlign(bitDevice, TA_BASELINE) >= 0 ? 1 : 0); + + for(i = 0; i < numChars; i++) { + SIZE size; + char curChar; + int charWidth,charHeight,bmapWidth,bmapHeight,numBytes,res; + HBITMAP bitObject; + HGDIOBJ origBmap; + unsigned char *bmap; + + curChar = i + firstChar; + + // Find how high/wide this character is + VERIFY(GetTextExtentPoint32(bitDevice, &curChar, 1, &size)); + + // Create the output bitmap + charWidth = size.cx; + charHeight = size.cy; + bmapWidth = ((charWidth + 31) / 32) * 32; // Round up to the next multiple of 32 bits + bmapHeight = charHeight; + bitObject = CreateCompatibleBitmap(bitDevice, + bmapWidth, + bmapHeight); + //VERIFY(bitObject); + + // Assign the output bitmap to the device + origBmap = SelectObject(bitDevice, bitObject); + VERIFY(origBmap); + + VERIFY( PatBlt( bitDevice, 0, 0, bmapWidth, bmapHeight,BLACKNESS ) ); + + // Use our source font on the device + VERIFY(SelectObject(bitDevice, GetCurrentObject(fontDevice,OBJ_FONT))); + + // Draw the character + VERIFY(TextOut(bitDevice, 0, metric.tmAscent, &curChar, 1)); + + // Unselect our bmap object + VERIFY(SelectObject(bitDevice, origBmap)); + + // Convert the display dependant representation to a 1 bit deep DIB + numBytes = (bmapWidth * bmapHeight) / 8; + bmap = malloc(numBytes); + dibInfo->bmiHeader.biWidth = bmapWidth; + dibInfo->bmiHeader.biHeight = bmapHeight; + res = GetDIBits(bitDevice, bitObject, 0, bmapHeight, bmap, + dibInfo, + DIB_RGB_COLORS); + //VERIFY(res); + + // Create the GL object + glNewList(i + listBase, GL_COMPILE); + glBitmap(bmapWidth, bmapHeight, 0.0, metric.tmDescent, + charWidth, 0.0, + bmap); + glEndList(); + // CheckGL(); + + // Destroy the bmap object + DeleteObject(bitObject); + + // Deallocate the bitmap data + free(bmap); + } + + // Destroy the DC + VERIFY(DeleteDC(bitDevice)); + + free(dibInfo); + + return TRUE; +#undef VERIFY +} + GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase) { @@ -257,6 +367,7 @@ GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, HANDLE hBits; LPSTR lpBits; MAT2 mat; + int success = TRUE; if (first<0) return FALSE; @@ -274,6 +385,19 @@ GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, memset(&gm,0,sizeof(gm)); + /* + ** If we can't get the glyph outline, it may be because this is a fixed + ** font. Try processing it that way. + */ + if( GetGlyphOutline(hdc, first, GGO_BITMAP, &gm, 0, NULL, &mat) + == GDI_ERROR ) + { + return wglUseFontBitmaps_FX( hdc, first, count, listBase ); + } + + /* + ** Otherwise process all desired characters. + */ for (i = 0; i < count; i++) { DWORD err; @@ -284,8 +408,10 @@ GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, size = GetGlyphOutline(hdc, first + i, GGO_BITMAP, &gm, 0, NULL, &mat); if (size == GDI_ERROR) { + glEndList( ); err = GetLastError(); - return(FALSE); + success = FALSE; + continue; } hBits = GlobalAlloc(GHND, size+1); @@ -304,12 +430,13 @@ GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, if (err == GDI_ERROR) { - err = GetLastError(); - GlobalUnlock(hBits); GlobalFree(hBits); - - return(FALSE); + + glEndList( ); + err = GetLastError(); + success = FALSE; + continue; } glBitmap(gm.gmBlackBoxX,gm.gmBlackBoxY, @@ -324,9 +451,10 @@ GLAPI BOOL GLWINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, glEndList( ); } - return TRUE; + return success; } + GLAPI BOOL GLWINAPI wglUseFontBitmapsW(HDC hdc,DWORD first,DWORD count,DWORD listBase) { return FALSE; |