view src/video/qtopia/SDL_QWin.h @ 968:4675910b0b7b

Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) From: Hannu Savolainen Subject: Re: SDL uses obsolete OSS features I did some work on getting OSS to work better with SDL. There have been some problems with select which should be fixed now. I'm having some problems in understanding what is the purpose of the DSP_WaitAudio() routine. I added a return to the very beginning of this routine and commendted out the define for USE_BLOCKING_WRITES. At least lbreakout2 seems to work as well as earlier. The latencies are the same. An ordinary blocking write does exactly the same thing than DSP_WaitAudio does. So I would recommend using the USE_BLOCKING_WRITES approach and removing everything from the DSP_WaitAudio routine. Also enabling USE_BLOCKING_WRITES makes it possible to simplify DSP_PlayAudio() because you don't need to handle the partial writes (the do-while loop). Attached is a patch against SDL-1.2.7. After these changes SDL will use OSS as it's designed to be used (make it as simple as possible). This code should work with all OSS implementations because it uses only the very fundamental features that have been there since the jurassic times.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 12 Nov 2004 21:39:04 +0000
parents b8d311d90021
children c9b51268668f
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/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

#ifndef _SDL_QWin_h
#define _SDL_QWin_h
#include <stdio.h>

#include <qimage.h>
#include <qpixmap.h>
#include <qwidget.h>
#include <qpainter.h>
#include <qdirectpainter_qws.h>

#include "SDL_events.h"

extern "C" {
#include "SDL_events_c.h"
};

typedef enum { 
    SDL_QT_NO_ROTATION = 0, 
    SDL_QT_ROTATION_90, 
    SDL_QT_ROTATION_270 
} screenRotationT;

extern screenRotationT screenRotation;

class SDL_QWin : public QWidget
{
  void QueueKey(QKeyEvent *e, int pressed);
 public:
  SDL_QWin(const QSize& size);
  virtual ~SDL_QWin();
  virtual bool shown(void) {
    return isVisible();
  }
  /* If called, the next resize event will not be forwarded to SDL. */
  virtual void inhibitResize(void) {
    my_inhibit_resize = true;
  }
  void setImage(QImage *image);
  void setOffset(int x, int y) {
    my_offset = QPoint(x, y);
  }
  void GetXYOffset(int &x, int &y) {
    x = my_offset.x();
    y = my_offset.y();
  }
  QImage *image(void) { return my_image; }
  
  void setWFlags(WFlags flags) {
    QWidget::setWFlags(flags);
    my_flags = flags;
  }
  const QPoint& mousePos() const { return my_mouse_pos; }
  void setMousePos(const QPoint& newpos);
  void setFullscreen(bool);

  bool lockScreen(bool force=false);
  void unlockScreen();
  void repaintRect(const QRect& rect);
 protected:
  /* Handle resizing of the window */
  virtual void resizeEvent(QResizeEvent *e);
  void focusInEvent(QFocusEvent *);
  void focusOutEvent(QFocusEvent *);
  void closeEvent(QCloseEvent *e);
  void mouseMoveEvent(QMouseEvent *e);
  void mousePressEvent(QMouseEvent *e);
  void mouseReleaseEvent(QMouseEvent *e);
  void paintEvent(QPaintEvent *ev);
  void keyPressEvent(QKeyEvent *e)   { QueueKey(e, 1); }
  void keyReleaseEvent(QKeyEvent *e) { QueueKey(e, 0); }
 private:
  bool repaintRotation0(const QRect& rect);
  bool repaintRotation1(const QRect& rect);
  bool repaintRotation3(const QRect& rect);
  void enableFullscreen();
  QDirectPainter *my_painter;
  QImage *my_image;
  bool my_inhibit_resize;
  QPoint my_offset;
  QPoint my_mouse_pos;
  WFlags my_flags;
  WFlags my_has_fullscreen;
  unsigned int my_locked;
};

#endif /* _SDL_QWin_h */