Esempio n. 1
0
func (wb *WindowBase) dialogBaseUnitsToPixels(dlus Size) (pixels Size) {
	// FIXME: Cache dialog base units on font change.
	base := wb.dialogBaseUnits()

	return Size{
		int(win.MulDiv(int32(dlus.Width), int32(base.Width), 4)),
		int(win.MulDiv(int32(dlus.Height), int32(base.Height), 8)),
	}
}
Esempio n. 2
0
func newFontFromLOGFONT(lf *win.LOGFONT, dpi int) (*Font, error) {
	if lf == nil {
		return nil, newError("lf cannot be nil")
	}

	family := win.UTF16PtrToString(&lf.LfFaceName[0])
	pointSize := int(win.MulDiv(lf.LfHeight, 72, int32(dpi)))
	if pointSize < 0 {
		pointSize = -pointSize
	}

	var style FontStyle
	if lf.LfWeight > win.FW_NORMAL {
		style |= FontBold
	}
	if lf.LfItalic == win.TRUE {
		style |= FontItalic
	}
	if lf.LfUnderline == win.TRUE {
		style |= FontUnderline
	}
	if lf.LfStrikeOut == win.TRUE {
		style |= FontStrikeOut
	}

	return NewFont(family, pointSize, style)
}
Esempio n. 3
0
func (f *Font) createForDPI(dpi int) win.HFONT {
	var lf win.LOGFONT

	lf.LfHeight = -win.MulDiv(int32(f.pointSize), int32(dpi), 72)
	if f.style&FontBold > 0 {
		lf.LfWeight = win.FW_BOLD
	} else {
		lf.LfWeight = win.FW_NORMAL
	}
	if f.style&FontItalic > 0 {
		lf.LfItalic = 1
	}
	if f.style&FontUnderline > 0 {
		lf.LfUnderline = 1
	}
	if f.style&FontStrikeOut > 0 {
		lf.LfStrikeOut = 1
	}
	lf.LfCharSet = win.DEFAULT_CHARSET
	lf.LfOutPrecision = win.OUT_TT_PRECIS
	lf.LfClipPrecision = win.CLIP_DEFAULT_PRECIS
	lf.LfQuality = win.CLEARTYPE_QUALITY
	lf.LfPitchAndFamily = win.VARIABLE_PITCH | win.FF_SWISS

	src := syscall.StringToUTF16(f.family)
	dest := lf.LfFaceName[:]
	copy(dest, src)

	return win.CreateFontIndirect(&lf)
}