src/video/qtopia/SDL_sysvideo.cc
author Sam Lantinga <slouken@libsdl.org>
Sun, 19 May 2002 20:06:01 +0000
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child 379 11c8a7684f74
permissions -rw-r--r--
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/*
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  SDL - Simple DirectMedia Layer
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  Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
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  This library is free software; you can redistribute it and/or
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  modify it under the terms of the GNU Library General Public
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  License as published by the Free Software Foundation; either
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  version 2 of the License, or (at your option) any later version.
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  This library is distributed in the hope that it will be useful,
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  but WITHOUT ANY WARRANTY; without even the implied warranty of
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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  Library General Public License for more details.
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  You should have received a copy of the GNU Library General Public
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  License along with this library; if not, write to the Free
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  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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  Sam Lantinga
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  slouken@libsdl.org
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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 "@(#) $Id$";
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#endif
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/* Qtopia based framebuffer implementation */
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <qapplication.h>
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#include "SDL.h"
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#include "SDL_timer.h"
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#include "SDL_QWin.h"
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#include "SDL_QPEApp.h"
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extern "C" {
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#include "SDL_sysvideo.h"
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#include "SDL_sysmouse_c.h"
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#include "SDL_sysevents_c.h"
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#include "SDL_events_c.h"
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#include "SDL_syswm_c.h"
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#include "SDL_lowvideo.h"
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  //#define QTOPIA_DEBUG
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#define QT_HIDDEN_SIZE	32	/* starting hidden window size */
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  /* Initialization/Query functions */
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  static int QT_VideoInit(_THIS, SDL_PixelFormat *vformat);
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  static SDL_Rect **QT_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
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  static SDL_Surface *QT_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
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  static void QT_UpdateMouse(_THIS);
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  static int QT_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
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  static void QT_VideoQuit(_THIS);
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  /* Hardware surface functions */
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  static int QT_AllocHWSurface(_THIS, SDL_Surface *surface);
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  static int QT_LockHWSurface(_THIS, SDL_Surface *surface);
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  static void QT_UnlockHWSurface(_THIS, SDL_Surface *surface);
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  static void QT_FreeHWSurface(_THIS, SDL_Surface *surface);
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  static int QT_ToggleFullScreen(_THIS, int fullscreen);
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  /* FB driver bootstrap functions */
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  static int QT_Available(void)
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  {
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    return(1);
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  }
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  static void QT_DeleteDevice(SDL_VideoDevice *device)
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  {
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    free(device->hidden);
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    free(device);
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  }
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  static SDL_VideoDevice *QT_CreateDevice(int devindex)
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  {
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    SDL_VideoDevice *device;
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    /* Initialize all variables that we clean on shutdown */
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    device = (SDL_VideoDevice *)malloc(sizeof(SDL_VideoDevice));
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    if ( device ) {
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      memset(device, 0, (sizeof *device));
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      device->hidden = (struct SDL_PrivateVideoData *)
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	malloc((sizeof *device->hidden));
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    }
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    if ( (device == NULL) || (device->hidden == NULL) ) {
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      SDL_OutOfMemory();
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      if ( device ) {
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	free(device);
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      }
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      return(0);
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    }
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    memset(device->hidden, 0, (sizeof *device->hidden));
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    /* Set the function pointers */
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    device->VideoInit = QT_VideoInit;
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    device->ListModes = QT_ListModes;
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    device->SetVideoMode = QT_SetVideoMode;
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    device->UpdateMouse = QT_UpdateMouse;
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    device->SetColors = QT_SetColors;
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    device->UpdateRects = NULL;
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    device->VideoQuit = QT_VideoQuit;
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    device->AllocHWSurface = QT_AllocHWSurface;
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    device->CheckHWBlit = NULL;
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    device->FillHWRect = NULL;
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    device->SetHWColorKey = NULL;
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    device->SetHWAlpha = NULL;
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    device->LockHWSurface = QT_LockHWSurface;
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    device->UnlockHWSurface = QT_UnlockHWSurface;
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    device->FlipHWSurface = NULL;
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    device->FreeHWSurface = QT_FreeHWSurface;
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    device->SetIcon = NULL;
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    device->SetCaption = QT_SetWMCaption;
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    device->GetWMInfo = NULL;
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    device->FreeWMCursor = QT_FreeWMCursor;
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    device->CreateWMCursor = QT_CreateWMCursor;
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    device->ShowWMCursor = QT_ShowWMCursor;
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    device->WarpWMCursor = QT_WarpWMCursor;
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    device->InitOSKeymap = QT_InitOSKeymap;
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    device->PumpEvents = QT_PumpEvents;
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    device->free = QT_DeleteDevice;
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    device->ToggleFullScreen = QT_ToggleFullScreen;
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    /* Set the driver flags */
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    device->handles_any_size = 0;
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    return device;
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  }
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  VideoBootStrap Qtopia_bootstrap = {
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    "qtopia", "Qtopia / QPE graphics",
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    QT_Available, QT_CreateDevice
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  };
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  /* Function to sort the display_list */
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  static int CompareModes(const void *A, const void *B)
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  {
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#if 0
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    const display_mode *a = (display_mode *)A;
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    const display_mode *b = (display_mode *)B;
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    if ( a->space == b->space ) {
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      return((b->virtual_width*b->virtual_height)-
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	     (a->virtual_width*a->virtual_height));
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    } else {
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      return(ColorSpaceToBitsPerPixel(b->space)-
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	     ColorSpaceToBitsPerPixel(a->space));
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    }
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#endif
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    return 0;
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  }
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  /* Yes, this isn't the fastest it could be, but it works nicely */
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  static int QT_AddMode(_THIS, int index, unsigned int w, unsigned int h)
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  {
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    SDL_Rect *mode;
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    int i;
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    int next_mode;
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    /* Check to see if we already have this mode */
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    if ( SDL_nummodes[index] > 0 ) {
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      for ( i=SDL_nummodes[index]-1; i >= 0; --i ) {
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	mode = SDL_modelist[index][i];
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	if ( (mode->w == w) && (mode->h == h) ) {
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	  return(0);
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	}
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      }
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    }
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    /* Set up the new video mode rectangle */
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    mode = (SDL_Rect *)malloc(sizeof *mode);
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    if ( mode == NULL ) {
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      SDL_OutOfMemory();
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      return(-1);
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    }
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    mode->x = 0;
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    mode->y = 0;
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    mode->w = w;
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    mode->h = h;
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#ifdef QTOPIA_DEBUG
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    fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h, index+1);
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#endif
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    /* Allocate the new list of modes, and fill in the new mode */
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    next_mode = SDL_nummodes[index];
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    SDL_modelist[index] = (SDL_Rect **)
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      realloc(SDL_modelist[index], (1+next_mode+1)*sizeof(SDL_Rect *));
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    if ( SDL_modelist[index] == NULL ) {
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      SDL_OutOfMemory();
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      SDL_nummodes[index] = 0;
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      free(mode);
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      return(-1);
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    }
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    SDL_modelist[index][next_mode] = mode;
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    SDL_modelist[index][next_mode+1] = NULL;
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    SDL_nummodes[index]++;
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    return(0);
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  }
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  int QT_VideoInit(_THIS, SDL_PixelFormat *vformat)
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  {
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    /* Initialize the QPE Application  */
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    if(SDL_InitQPEApp() == -1) {
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      return -1;
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    }
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     /* Determine the screen depth */
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    vformat->BitsPerPixel = QPixmap::defaultDepth();
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    // For now we hardcode the current depth because anything else
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    // might as well be emulated by SDL rather than by Qtopia.
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    QSize desktop_size = qApp->desktop()->size();
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    QT_AddMode(_this, ((vformat->BitsPerPixel+7)/8)-1,
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	       desktop_size.width(), desktop_size.height());
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    QT_AddMode(_this, ((vformat->BitsPerPixel+7)/8)-1,
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	       desktop_size.height(), desktop_size.width());
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    /* Create the window / widget */
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    SDL_Win = new SDL_QWin(QSize(QT_HIDDEN_SIZE, QT_HIDDEN_SIZE));
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    qApp->setMainWidget(SDL_Win);
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    /* Fill in some window manager capabilities */
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    _this->info.wm_available = 0;
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    /* We're done! */
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    return(0);
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  }
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  /* We support any dimension at our bit-depth */
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  SDL_Rect **QT_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
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  {
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    SDL_Rect **modes;
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    modes = ((SDL_Rect **)0);
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    if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {
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      modes = SDL_modelist[((format->BitsPerPixel+7)/8)-1];
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    } else {
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      if ( format->BitsPerPixel ==
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	   _this->screen->format->BitsPerPixel ) {
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	modes = ((SDL_Rect **)-1);
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      }
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    }
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    return(modes);
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  }
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  /* Various screen update functions available */
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  static void QT_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
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  static int QT_SetFullScreen(_THIS, SDL_Surface *screen, int fullscreen)
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  {
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    return -1;
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  }
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  static int QT_ToggleFullScreen(_THIS, int fullscreen)
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  {
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    return -1;
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  }
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  /* FIXME: check return values and cleanup here */
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  SDL_Surface *QT_SetVideoMode(_THIS, SDL_Surface *current,
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			       int width, int height, int bpp, Uint32 flags)
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  {
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    Qt::WFlags wflags = Qt::WType_TopLevel|Qt::WStyle_Customize;
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    QImage *qimage;
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    QSize desktop_size = qApp->desktop()->size();
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    current->flags = SDL_FULLSCREEN; // We always run fullscreen.
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    if(width <= desktop_size.width() && height <= desktop_size.height()) {
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      current->w = desktop_size.width();
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      current->h = desktop_size.height();
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    } else if(width <= desktop_size.height()
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	      && height <= desktop_size.width()) {
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      // Landscape mode
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      current->h = desktop_size.width();
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      current->w = desktop_size.height();
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    } else {
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      SDL_SetError("Unsupported resolution, %dx%d\n", width, height);
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    }
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    if ( flags & SDL_OPENGL ) {
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      SDL_SetError("OpenGL not supported");
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      return(NULL);
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    } 
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    /* Create the QImage framebuffer */
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    qimage = new QImage(current->w, current->h, bpp);
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    if (qimage->isNull()) {
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      SDL_SetError("Couldn't create screen bitmap");
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      delete qimage;
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      return(NULL);
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    }
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    current->pitch = qimage->bytesPerLine();
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    current->pixels = (void *)qimage->bits();
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    SDL_Win->setImage(qimage);
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    _this->UpdateRects = QT_NormalUpdate;
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    SDL_Win->setFullscreen(true);
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    /* We're done */
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    return(current);
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  }
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  /* Update the current mouse state and position */
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  void QT_UpdateMouse(_THIS)
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  {
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    QPoint point(-1, -1);
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    if ( SDL_Win->isActiveWindow() ) {
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      point = SDL_Win->mousePos();
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    }
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    if ( (point.x() >= 0) && (point.x() < SDL_VideoSurface->w) &&
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	 (point.y() >= 0) && (point.y() < SDL_VideoSurface->h) ) {
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      SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
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      SDL_PrivateMouseMotion(0, 0,
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			     (Sint16)point.x(), (Sint16)point.y());
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    } else {
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      SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
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    }
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  }
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  /* We don't actually allow hardware surfaces other than the main one */
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  static int QT_AllocHWSurface(_THIS, SDL_Surface *surface)
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  {
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    return(-1);
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  }
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  static void QT_FreeHWSurface(_THIS, SDL_Surface *surface)
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  {
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    return;
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  }
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  static int QT_LockHWSurface(_THIS, SDL_Surface *surface)
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  {
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    return(0);
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  }
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  static void QT_UnlockHWSurface(_THIS, SDL_Surface *surface)
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  {
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    return;
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  }
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  static void QT_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
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  {
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   353
    int i;
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   354
    SDL_Win->lockScreen(); 
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    for ( i=0; i<numrects; ++i ) {
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      QRect rect(rects[i].x, rects[i].y,
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		 rects[i].w, rects[i].h);
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      SDL_Win->repaintRect(rect);
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   359
    }
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    SDL_Win->unlockScreen(); 
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  }
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  /* Is the system palette settable? */
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  int QT_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
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  {
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   365
    return -1;
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   366
  }
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   367
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   368
  void QT_VideoQuit(_THIS)
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   369
  {
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   370
    qApp->setMainWidget(0);
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   371
    delete SDL_Win;
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   372
    SDL_QuitQPEApp();
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   373
    _this->screen->pixels = NULL;
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   374
  }
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}; /* Extern C */