Function PiuTextFormatLine

modules/piu/All/piuText.c:845–903

}

void PiuTextFormatLine(PiuText* self, PiuTextFormatContext ctx, PiuTextKind kind, PiuTextOffset length)
{
	xsMachine *the = (*self)->the;
	PiuTextBuffer* lineBuffer = (*self)->lineBuffer;
	PiuTextOffset lineOffset = (PiuTextOffset)(*lineBuffer)->current;
	PiuTextLine line;
	PiuCoordinate x = (*ctx->blockStyle)->margins.left;
	xsIntegerValue leading = (*ctx->blockStyle)->leading;
	xsIntegerValue ascent, height;
	
	PiuTextBufferGrow(the, lineBuffer, sizeof(PiuTextLineRecord));
	line = LINE(lineOffset);
	line->textOffset = ctx->lineOffset;
	
	switch ((*ctx->blockStyle)->horizontal) {
	case piuCenter:
#ifdef piuPC
		line->x = x + ((ctx->blockWidth - ctx->lineWidth) / 2);
#else
		line->x = x + ((ctx->blockWidth - ctx->lineWidth) >> 1);
#endif
		line->portion = line->slop = 0;
		break;
	case piuLeft:
		line->x = x;
		line->portion = line->slop = 0;
		break;
	case piuRight:
		line->x = x + ctx->blockWidth - ctx->lineWidth;
		line->portion = line->slop = 0;
		break;
	default:
		line->x = x;
		line->portion = ctx->spaceCount;
		line->slop = (ctx->spaceCount) ? ctx->blockWidth - (ctx->lineWidth - ctx->spaceSum) : 0;
		break;	
	}
	if (kind == piuTextReturn) {
		line->portion = 0;
		line->slop = -length;
	}
	ascent = ctx->lineAscent;
	height = ctx->lineHeight;
	if (leading < 0) {
		leading = -leading;
		ascent = (ascent * leading) / 100;
		height = (height * leading) / 100;
	}
	else if (leading > 0) {
		if (0 < height && height < leading) {
			ascent = (ascent * leading) / height;
			height = leading;
		}
	}
	line->top = ctx->y + (PiuCoordinate)ascent - ctx->lineAscent;
	line->base = ctx->y + (PiuCoordinate)ascent;
	line->bottom = line->top + ctx->lineHeight;
	ctx->y += (PiuCoordinate)height;