int unicodeGetXRanges(char *utf8, int utf8Length, int *resultPtr, int resultLength) {
SCRIPT_STRING_ANALYSIS ssa;
HDC hdc;
int i, pX;
HRESULT r;
if (utf8Length == 0) return 0;
g_wLength = 0;
hdc = CreateCompatibleDC(0);
ssa = analyze(hdc, utf8, utf8Length);
if (ssa != NULL) {
for (i = 0; i < g_wLength; i++) {
r = ScriptStringCPtoX(ssa, i, FALSE, &pX);
if (FAILED(r)) pX = -1;
resultPtr[2 * i] = pX;
r = ScriptStringCPtoX(ssa, i, TRUE, &pX);
if (FAILED(r)) pX = -1;
resultPtr[(2 * i) + 1] = pX;
}
ScriptStringFree(&ssa);
}
DeleteDC(hdc);
return g_wLength;
}
//TODO: Double check/ensure this function is only called via the gui thread..
SIZE ProjectTreeItem::GetPreferredSize()
{
SIZE sz = defaultSize;
if(!m_size.cx)
{
m_size.cy = defaultSize.cy;
HDC dc = GetDC(m_parentHwnd);
if(dc)
{
HGDIOBJ oldFont = SelectObject(dc, s_hFont);
SetTextAlign(dc, TA_LEFT);
loadngo::gui::NativeString title(m_pTask->GetTitle());
const TCHAR *pTitle = title;
long strLen = _tcslen(pTitle);
SCRIPT_STRING_ANALYSIS ssa;
SecureZeroMemory(&ssa, sizeof(SCRIPT_STRING_ANALYSIS));
HRESULT hr = ScriptStringAnalyse(dc, pTitle, strLen, 0, -1, SSA_GLYPHS, 0, 0, 0, 0, 0, 0, &ssa);
if(SUCCEEDED(hr))
{
sz.cx = ScriptString_pSize(ssa)->cx + 20;
ScriptStringFree(&ssa);
m_size.cx = sz.cx > defaultSize.cx? sz.cx: defaultSize.cx;
}
SelectObject(dc, oldFont);
ReleaseDC(m_parentHwnd, dc);
}
}
return m_size.cx? m_size: sz;
}
void unicodeMeasureString(char *utf8, int utf8Length, int *wPtr, int *hPtr) {
SCRIPT_STRING_ANALYSIS ssa;
HDC hdc;
CONST SIZE *pSize;
if (utf8Length == 0) return;
hdc = CreateCompatibleDC(0);
ssa = analyze(hdc, utf8, utf8Length);
if (ssa != NULL) {
pSize = ScriptString_pSize(ssa);
if (pSize != NULL) {
*wPtr = pSize->cx;
*hPtr = pSize->cy;
}
ScriptStringFree(&ssa);
}
DeleteDC(hdc);
}
void unicodeDrawString(char *utf8, int utf8Length, int *wPtr, int *hPtr, unsigned int *bitmapPtr) {
SCRIPT_STRING_ANALYSIS ssa;
HDC hdc;
BITMAPINFO bi;
HBITMAP hBitmap;
unsigned int *dibBits;
HGDIOBJ oldObj;
CONST SIZE *pSize;
int w = *wPtr;
int h = *hPtr;
unsigned int *src, *dst, *end;
*wPtr = *hPtr = 0;
if (utf8Length == 0) return;
hdc = CreateCompatibleDC(0);
ssa = analyze(hdc, utf8, utf8Length);
if (ssa == NULL) goto cleanup;
// create a device independent bitmap
bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bi.bmiHeader.biWidth = w;
bi.bmiHeader.biHeight = -h; // negative indicates top-down bitmap
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biCompression = BI_RGB;
bi.bmiHeader.biSizeImage = 0;
bi.bmiHeader.biXPelsPerMeter = 0;
bi.bmiHeader.biYPelsPerMeter = 0;
bi.bmiHeader.biClrUsed = 0;
bi.bmiHeader.biClrImportant = 0;
hBitmap = CreateDIBSection(hdc, &bi, DIB_RGB_COLORS, &dibBits, NULL, 0);
if (hBitmap == NULL) goto cleanup;
// attached the bitmap to the context
oldObj = SelectObject(hdc, hBitmap);
if (oldObj != NULL) {
// set fg and bg colors and render the string
SetBkColor(hdc, g_bgColor);
SetTextColor(hdc, g_fgColor);
ScriptStringOut(ssa, 0, 0, 0, NULL, 0, 0, FALSE);
pSize = ScriptString_pSize(ssa);
if (pSize != NULL) {
*wPtr = pSize->cx;
*hPtr = pSize->cy;
}
// copy pixels into Squeak's bitmap
src = dibBits;
dst = (int *) bitmapPtr;
end = dst + (w * h);
if (g_bgTransparent && (g_bgRGB != 0)) {
// if g_bgTransparent was set, map g_bgRGB to 0 (transparent)
while (dst < end) {
*dst++ = (*src == g_bgRGB) ? 0 : *src;
src++;
}
} else {
while (dst < end) *dst++ = *src++;
}
SelectObject(hdc, oldObj);
}
ScriptStringFree(&ssa);
DeleteObject(hBitmap);
cleanup:
DeleteDC(hdc);
}
/*
* This is a hack used by Chrome and WebKit to expose the fallback font used
* by Uniscribe for some given text for use with custom shapers / font engines.
*/
static char *UniscribeFallback( const char *psz_family, uni_char_t codepoint )
{
HDC hdc = NULL;
HDC meta_file_dc = NULL;
HENHMETAFILE meta_file = NULL;
LPTSTR psz_fbuffer = NULL;
char *psz_result = NULL;
hdc = CreateCompatibleDC( NULL );
if( !hdc )
return NULL;
meta_file_dc = CreateEnhMetaFile( hdc, NULL, NULL, NULL );
if( !meta_file_dc )
goto error;
LOGFONT lf;
memset( &lf, 0, sizeof( lf ) );
psz_fbuffer = ToT( psz_family );
if( !psz_fbuffer )
goto error;
_tcsncpy( ( LPTSTR ) &lf.lfFaceName, psz_fbuffer, LF_FACESIZE );
free( psz_fbuffer );
lf.lfCharSet = DEFAULT_CHARSET;
HFONT hFont = CreateFontIndirect( &lf );
if( !hFont )
goto error;
HFONT hOriginalFont = SelectObject( meta_file_dc, hFont );
TCHAR text = codepoint;
SCRIPT_STRING_ANALYSIS script_analysis;
HRESULT hresult = ScriptStringAnalyse( meta_file_dc, &text, 1, 0, -1,
SSA_METAFILE | SSA_FALLBACK | SSA_GLYPHS | SSA_LINK,
0, NULL, NULL, NULL, NULL, NULL, &script_analysis );
if( SUCCEEDED( hresult ) )
{
hresult = ScriptStringOut( script_analysis, 0, 0, 0, NULL, 0, 0, FALSE );
ScriptStringFree( &script_analysis );
}
SelectObject( meta_file_dc, hOriginalFont );
DeleteObject( hFont );
meta_file = CloseEnhMetaFile( meta_file_dc );
if( SUCCEEDED( hresult ) )
{
LOGFONT log_font;
log_font.lfFaceName[ 0 ] = 0;
EnumEnhMetaFile( 0, meta_file, MetaFileEnumProc, &log_font, NULL );
if( log_font.lfFaceName[ 0 ] )
psz_result = FromT( log_font.lfFaceName );
}
DeleteEnhMetaFile(meta_file);
DeleteDC( hdc );
return psz_result;
error:
if( meta_file_dc ) DeleteEnhMetaFile( CloseEnhMetaFile( meta_file_dc ) );
if( hdc ) DeleteDC( hdc );
return NULL;
}
