private static Size MeasureTextInternal(
IDeviceContext dc,
ReadOnlySpan <char> text,
Font?font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom)
{
if (dc is null)
{
throw new ArgumentNullException(nameof(dc));
}
if (text.IsEmpty)
{
return(Size.Empty);
}
// This MUST come before retreiving the HDC, which locks the Graphics object
Gdi32.QUALITY quality = FontQualityFromTextRenderingHint(dc);
// Applying state may not impact text size measurements. Rather than risk missing some
// case we'll apply as we have historically to avoid suprise regressions.
using var hdc = new DeviceContextHdcScope(dc, GetApplyStateFlags(dc, flags));
using var hfont = GdiCache.GetHFONT(font, quality, hdc);
return(hdc.HDC.MeasureText(text, hfont, proposedSize, flags));
}
private static Size MeasureTextInternal(
IDeviceContext dc,
ReadOnlySpan <char> text,
Font?font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom,
bool blockModifyString = false)
{
if (dc is null)
{
throw new ArgumentNullException(nameof(dc));
}
User32.DT drawTextFlags = GetTextFormatFlags(flags, blockModifyString);
if (text.IsEmpty)
{
return(Size.Empty);
}
// This MUST come before retreiving the HDC, which locks the Graphics object
Gdi32.QUALITY quality = FontQualityFromTextRenderingHint(dc);
using var hdc = new DeviceContextHdcScope(dc);
using var hfont = GdiCache.GetHFONT(font, quality, hdc);
return(hdc.MeasureText(text, hfont, proposedSize, drawTextFlags));
}
private static void DrawTextInternal(
Gdi32.HDC hdc,
ReadOnlySpan <char> text,
Font?font,
Rectangle bounds,
Color foreColor,
Gdi32.QUALITY fontQuality,
Color backColor,
TextFormatFlags flags)
{
using var hfont = GdiCache.GetHFONT(font, fontQuality, hdc);
hdc.DrawText(text, hfont, bounds, foreColor, flags, backColor);
}
internal static void DrawTextInternal(
Gdi32.HDC hdc,
string?text,
Font?font,
Rectangle bounds,
Color foreColor,
Gdi32.QUALITY fontQuality,
Color backColor,
User32.DT flags)
{
using var hfont = GdiCache.GetHFONT(font, fontQuality);
hdc.DrawText(text, hfont, bounds, foreColor, flags, backColor);
}
private static Size MeasureTextInternal(
ReadOnlySpan<char> text,
Font? font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom)
{
if (text.IsEmpty)
return Size.Empty;
using var screen = GdiCache.GetScreenHdc();
using var hfont = GdiCache.GetHFONT(font, Gdi32.QUALITY.DEFAULT, screen);
return screen.HDC.MeasureText(text, hfont, proposedSize, GetTextFormatFlags(flags));
}
private static Size MeasureTextInternal(
string?text,
Font?font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom)
{
if (string.IsNullOrEmpty(text))
{
return(Size.Empty);
}
using var hfont = GdiCache.GetHFONT(font);
using var screen = GdiCache.GetScreenHdc();
return(screen.HDC.MeasureText(text, hfont, proposedSize, GetTextFormatFlags(flags)));
}
private static Size MeasureTextInternal(
ReadOnlySpan <char> text,
Font?font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom,
bool blockModifyString = false)
{
User32.DT drawTextFlags = GetTextFormatFlags(flags, blockModifyString);
if (text.IsEmpty)
{
return(Size.Empty);
}
using var screen = GdiCache.GetScreenHdc();
using var hfont = GdiCache.GetHFONT(font, Gdi32.QUALITY.DEFAULT, screen);
return(screen.HDC.MeasureText(text, hfont, proposedSize, drawTextFlags));
}
private static Size MeasureTextInternal(
IDeviceContext dc,
string?text,
Font?font,
Size proposedSize,
TextFormatFlags flags = TextFormatFlags.Bottom)
{
if (dc == null)
{
throw new ArgumentNullException(nameof(dc));
}
if (string.IsNullOrEmpty(text))
{
return(Size.Empty);
}
// This MUST come before retreiving the HDC, which locks the Graphics object
Gdi32.QUALITY quality = FontQualityFromTextRenderingHint(dc);
using var hdc = new DeviceContextHdcScope(dc);
using var hfont = GdiCache.GetHFONT(font, quality);
return(hdc.MeasureText(text, hfont, proposedSize, GetTextFormatFlags(flags)));
}
