fbportrait_left.c

开放源码实时操作系统源码.

/*
 * Copyright (c) 2000, 2001 Greg Haerr <[e-mail]>
 *
 * Portrait mode subdriver for Microwindows
 */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "device.h"
#include "fb.h"

static void
fbportrait_drawpixel(PSD psd,MWCOORD x, MWCOORD y, MWPIXELVAL c)
{
	psd->orgsubdriver->DrawPixel(psd, y, psd->xvirtres-x-1, c);
}

static MWPIXELVAL
fbportrait_readpixel(PSD psd,MWCOORD x, MWCOORD y)
{
	return psd->orgsubdriver->ReadPixel(psd, y, psd->xvirtres-x-1);
}

static void
fbportrait_drawhorzline(PSD psd,MWCOORD x1, MWCOORD x2, MWCOORD y, MWPIXELVAL c)
{
	psd->orgsubdriver->DrawVertLine(psd, y, psd->xvirtres-x2-1,
		psd->xvirtres-x1-1, c);

	/*
	 * Uncomment the following if driver doesn't support hline
	x2 = psd->xvirtres-x2-1;
	while(x2 <= (psd->xvirtres-x1-1))
		fb_drawpixel(psd, y, x2++, c);
	 */
}

static void
fbportrait_drawvertline(PSD psd,MWCOORD x, MWCOORD y1, MWCOORD y2, MWPIXELVAL c)
{
	psd->orgsubdriver->DrawHorzLine(psd, y1, y2, psd->xvirtres-x-1, c);

	/*
	 * Uncomment the following if driver doesn't support vline
	while(y1 <= y2)
		fb_drawpixel(psd, y1++, psd->xvirtres-x-1, c);
	 */
}

static void
fbportrait_fillrect(PSD psd,MWCOORD x1, MWCOORD y1, MWCOORD x2, MWCOORD y2,
	MWPIXELVAL c)
{
	x1 = psd->xvirtres-x1-1;
	x2 = psd->xvirtres-x2-1;
	while(x2 <= x1)
		psd->orgsubdriver->DrawHorzLine(psd, y1, y2, x2++, c);
}

static void
fbportrait_blit(PSD dstpsd,MWCOORD destx,MWCOORD desty,MWCOORD w,MWCOORD h,
	PSD srcpsd, MWCOORD srcx,MWCOORD srcy,long op)
{
	dstpsd->orgsubdriver->Blit(dstpsd, desty, dstpsd->xvirtres-destx-w,
		h, w, srcpsd, srcy, srcpsd->xvirtres-srcx-w, op);
}

static void
fbportrait_stretchblit(PSD dstpsd, MWCOORD destx, MWCOORD desty, MWCOORD dstw,
	MWCOORD dsth, PSD srcpsd, MWCOORD srcx, MWCOORD srcy, MWCOORD srcw,
	MWCOORD srch, long op)
{
	//dstpsd->orgsubdriver->StretchBlit(dstpsd, desty, dstpsd->xvirtres-destx-dstw,
		//dsth, dstw, srcpsd, srcy, srcpsd->xvirtres-srcx-srcw, 
		//srch, srcw, op);
}

SUBDRIVER fbportrait_left = {
	NULL,
	fbportrait_drawpixel,
	fbportrait_readpixel,
	fbportrait_drawhorzline,
	fbportrait_drawvertline,
	gen_fillrect,
	fbportrait_blit,
	NULL,
	fbportrait_stretchblit
};