static WinGdiFont SetFont(RequestFont font)
{
WinGdiFont winFont = WinGdiFontSystem.GetWinGdiFont(font);
MyWin32.SelectObject(win32MemDc.DC, winFont.CachedHFont());
return(winFont);
}
//==============================================
public static void CalculateGlyphAdvancePos(char[] str, int startAt, int len, RequestFont font, int[] glyphXAdvances)
{
unsafe
{
if (len == 0)
{
return;
}
WinGdiFont winfont = SetFont(font);
//ushort* glyhIndics = stackalloc ushort[len];
//fixed (char* s = &str[startAt])
//{
// NativeTextWin32.GetGlyphIndices(
// win32MemDc.DC,
// s,
// len,
// glyhIndics,
// 0);
//}
byte[] encoding = s_en.GetBytes(str, startAt, len);
NativeTextWin32.FontABC[] abcWidths = winfont.GetInteralABCArray();
for (int i = 0; i < len; ++i)
{
//ushort glyphIndex = *(glyhIndics + i);
int enc_index = encoding[i];
if (enc_index == 0)
{
break;//?
}
glyphXAdvances[i] = abcWidths[enc_index].Sum;
}
}
//unsafe
//{
// SetFont(font);
// NativeTextWin32.GCP_RESULTS gpcResult = new NativeTextWin32.GCP_RESULTS();
// int[] caretpos = new int[len];
// uint[] lpOrder = new uint[len];
// int[] lpDx = new int[len];
// fixed (int* lpdx_h = &lpDx[0])
// fixed (uint* lpOrder_h = &lpOrder[0])
// fixed (int* caretpos_h = &caretpos[0])
// fixed (char* str_h = &str[startAt])
// {
// gpcResult.lpCaretPos = caretpos_h;
// gpcResult.lpOrder = lpOrder_h;
// gpcResult.lpDx = lpdx_h;
// //gpcResult.
// ////gpcResult.lpCaretPos =
// NativeTextWin32.GetCharacterPlacement(
// win32MemDc.DC,
// str_h,
// len,
// len, ref gpcResult, 0);
// }
//}
}
public static WinGdiFont GetWinGdiFont(RequestFont f)
{
if (f == null)
{
throw new NotSupportedException();
}
if (f == latestFont)
{
return(latestWinFont);
}
WinGdiFont actualFontInside = WinGdiFont.GetCacheFontAsWinGdiFont(f);
if (actualFontInside != null)
{
return(actualFontInside);
}
//-----
//need to create a new one
//get register font or create the new one
int key = f.FontKey;
WinGdiFont found;
if (!registerFonts.TryGetValue(key, out found))
{
//create the new one and register
//create fontface
FontFaceKey fontfaceKey = new FontFaceKey(key);
WinGdiFontFace fontface;
if (!winGdiFonFaces.TryGetValue(fontfaceKey, out fontface))
{
//create new
fontface = new WinGdiFontFace(f);
winGdiFonFaces.Add(fontfaceKey, fontface);
}
found = (WinGdiFont)fontface.GetFontAtPointSize(f.SizeInPoints);
registerFonts.Add(key, found);//cache here
}
latestFont = f;
found.AssignToRequestFont(f);
return(latestWinFont = found);
}
/// <summary>
/// measure blank line height in px
/// </summary>
/// <param name="font"></param>
/// <returns></returns>
public static int MeasureBlankLineHeight(RequestFont font)
{
WinGdiFont winFont = WinGdiFontSystem.GetWinGdiFont(font);
return((int)winFont.RecommendedLineSpacingInPixels);
}
public static WinGdiFont GetWinGdiFont(RequestFont f)
{
if (f == null)
{
throw new NotSupportedException();
}
if (f == latestFont)
{
return latestWinFont;
}
WinGdiFont actualFontInside = WinGdiFont.GetCacheFontAsWinGdiFont(f);
if (actualFontInside != null)
{
return actualFontInside;
}
//-----
//need to create a new one
//get register font or create the new one
FontKey key = f.FontKey;
WinGdiFont found;
if (!registerFonts.TryGetValue(key, out found))
{
//create the new one and register
//create fontface
FontFaceKey fontfaceKey = new FontFaceKey(key);
WinGdiFontFace fontface;
if (!winGdiFonFaces.TryGetValue(fontfaceKey, out fontface))
{
//create new
fontface = new WinGdiFontFace(f.Name, f.Style);
winGdiFonFaces.Add(fontfaceKey, fontface);
}
found = (WinGdiFont)fontface.GetFontAtPointsSize(f.SizeInPoints);
registerFonts.Add(key, found);//cache here
}
latestFont = f;
found.AssignToRequestFont(f);
return latestWinFont = found;
}