SDL - Simple DirectMedia Layer

Copyright (C) 1997-2006 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 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

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Sam Lantinga

slouken@libsdl.org

*/

/* Qtopia based framebuffer implementation */

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <unistd.h>

#include <qapplication.h>

#include "SDL.h"

#include "SDL_timer.h"

#include "SDL_QWin.h"

extern "C" {

#include "SDL_sysvideo.h"

#include "SDL_sysmouse_c.h"

#include "SDL_sysevents_c.h"

#include "SDL_events_c.h"

#include "SDL_syswm_c.h"

#include "SDL_lowvideo.h"

//#define QTOPIA_DEBUG

#define QT_HIDDEN_SIZE 32 /* starting hidden window size */

/* Name of the environment variable used to invert the screen rotation or not:

Possible values:

!=0 : Screen is 270° rotated

0: Screen is 90° rotated*/

/* Initialization/Query functions */

static int QT_VideoInit(_THIS, SDL_PixelFormat *vformat);

static SDL_Rect **QT_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);

static SDL_Surface *QT_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);

static void QT_UpdateMouse(_THIS);

static int QT_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);

static void QT_VideoQuit(_THIS);

/* Hardware surface functions */

static int QT_AllocHWSurface(_THIS, SDL_Surface *surface);

static int QT_LockHWSurface(_THIS, SDL_Surface *surface);

static void QT_UnlockHWSurface(_THIS, SDL_Surface *surface);

static void QT_FreeHWSurface(_THIS, SDL_Surface *surface);

static int QT_ToggleFullScreen(_THIS, int fullscreen);

static int QT_IconifyWindow(_THIS);

static SDL_GrabMode QT_GrabInput(_THIS, SDL_GrabMode mode);

/* FB driver bootstrap functions */

static int QT_Available(void)

{

return(1);

}

static void QT_DeleteDevice(SDL_VideoDevice *device)

{

SDL_free(device->hidden);

SDL_free(device);

}

static SDL_VideoDevice *QT_CreateDevice(int devindex)

{

SDL_VideoDevice *device;

/* Initialize all variables that we clean on shutdown */

}

if ( (device == NULL) || (device->hidden == NULL) ) {

SDL_OutOfMemory();

if ( device ) {

}

return(0);

}

/* Set the function pointers */

device->VideoInit = QT_VideoInit;

device->ListModes = QT_ListModes;

device->SetVideoMode = QT_SetVideoMode;

device->UpdateMouse = QT_UpdateMouse;

device->SetColors = QT_SetColors;

device->UpdateRects = NULL;

device->VideoQuit = QT_VideoQuit;

device->AllocHWSurface = QT_AllocHWSurface;

device->CheckHWBlit = NULL;

device->FillHWRect = NULL;

device->SetHWColorKey = NULL;

device->SetHWAlpha = NULL;

device->LockHWSurface = QT_LockHWSurface;

device->UnlockHWSurface = QT_UnlockHWSurface;

device->FlipHWSurface = NULL;

device->FreeHWSurface = QT_FreeHWSurface;

device->SetIcon = NULL;

device->SetCaption = QT_SetWMCaption;

device->IconifyWindow = QT_IconifyWindow;

device->GrabInput = QT_GrabInput;

device->GetWMInfo = NULL;

device->FreeWMCursor = QT_FreeWMCursor;

device->CreateWMCursor = QT_CreateWMCursor;

device->ShowWMCursor = QT_ShowWMCursor;

device->WarpWMCursor = QT_WarpWMCursor;

device->InitOSKeymap = QT_InitOSKeymap;

device->PumpEvents = QT_PumpEvents;

device->free = QT_DeleteDevice;

device->ToggleFullScreen = QT_ToggleFullScreen;

/* Set the driver flags */

device->handles_any_size = 0;

return device;

}

VideoBootStrap Qtopia_bootstrap = {

"qtopia", "Qtopia / QPE graphics",

QT_Available, QT_CreateDevice

};

/* Function to sort the display_list */

static int CompareModes(const void *A, const void *B)

{

#if 0

const display_mode *a = (display_mode *)A;

const display_mode *b = (display_mode *)B;

if ( a->space == b->space ) {

return((b->virtual_width*b->virtual_height)-

(a->virtual_width*a->virtual_height));

} else {

return(ColorSpaceToBitsPerPixel(b->space)-

ColorSpaceToBitsPerPixel(a->space));

}

#endif

return 0;

}

/* Yes, this isn't the fastest it could be, but it works nicely */

static int QT_AddMode(_THIS, int index, unsigned int w, unsigned int h)

{

SDL_Rect *mode;

int i;

int next_mode;

/* Check to see if we already have this mode */

if ( SDL_nummodes[index] > 0 ) {

for ( i=SDL_nummodes[index]-1; i >= 0; --i ) {

mode = SDL_modelist[index][i];

if ( (mode->w == w) && (mode->h == h) ) {

return(0);

}

}

}

/* Set up the new video mode rectangle */

if ( mode == NULL ) {

SDL_OutOfMemory();

return(-1);

}

mode->x = 0;

mode->y = 0;

mode->w = w;

mode->h = h;

#ifdef QTOPIA_DEBUG

fprintf(stderr, "Adding mode %dx%d at %d bytes per pixel\n", w, h, index+1);

#endif

/* Allocate the new list of modes, and fill in the new mode */

next_mode = SDL_nummodes[index];

SDL_modelist[index] = (SDL_Rect **)

if ( SDL_modelist[index] == NULL ) {

SDL_OutOfMemory();

SDL_nummodes[index] = 0;

return(-1);

}

SDL_modelist[index][next_mode] = mode;

SDL_modelist[index][next_mode+1] = NULL;

SDL_nummodes[index]++;

return(0);

}

int QT_VideoInit(_THIS, SDL_PixelFormat *vformat)

{

/* Initialize the QPE Application */

/* Determine the screen depth */

vformat->BitsPerPixel = QPixmap::defaultDepth();

// For now we hardcode the current depth because anything else

// might as well be emulated by SDL rather than by Qtopia.

QSize desktop_size = qApp->desktop()->size();

QT_AddMode(_this, ((vformat->BitsPerPixel+7)/8)-1,

desktop_size.width(), desktop_size.height());

QT_AddMode(_this, ((vformat->BitsPerPixel+7)/8)-1,

desktop_size.height(), desktop_size.width());

/* Create the window / widget */

SDL_Win = new SDL_QWin(QSize(QT_HIDDEN_SIZE, QT_HIDDEN_SIZE));

/* Fill in some window manager capabilities */

_this->info.wm_available = 0;

/* We're done! */

return(0);

}

/* We support any dimension at our bit-depth */

SDL_Rect **QT_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)

{

SDL_Rect **modes;

modes = ((SDL_Rect **)0);

if ( (flags & SDL_FULLSCREEN) == SDL_FULLSCREEN ) {

modes = SDL_modelist[((format->BitsPerPixel+7)/8)-1];

} else {

if ( format->BitsPerPixel ==

_this->screen->format->BitsPerPixel ) {

modes = ((SDL_Rect **)-1);

}

}

return(modes);

}

/* Various screen update functions available */

static void QT_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);

static int QT_SetFullScreen(_THIS, SDL_Surface *screen, int fullscreen)

{

return -1;

}

static int QT_ToggleFullScreen(_THIS, int fullscreen)

{

return -1;

}

/* FIXME: check return values and cleanup here */

SDL_Surface *QT_SetVideoMode(_THIS, SDL_Surface *current,

int width, int height, int bpp, Uint32 flags)

{

QImage *qimage;

QSize desktop_size = qApp->desktop()->size();

if(width <= desktop_size.width()

&& height <= desktop_size.height()) {

current->w = desktop_size.width();

current->h = desktop_size.height();

int envValue = envString ? atoi(envString) : 0;

screenRotation = envValue ? SDL_QT_ROTATION_270 : SDL_QT_ROTATION_90;

current->h = desktop_size.width();

current->w = desktop_size.height();

} else {

SDL_SetError("Unsupported resolution, %dx%d\n", width, height);

}

if ( flags & SDL_OPENGL ) {

SDL_SetError("OpenGL not supported");

return(NULL);

}

/* Create the QImage framebuffer */

qimage = new QImage(current->w, current->h, bpp);

if (qimage->isNull()) {

SDL_SetError("Couldn't create screen bitmap");

delete qimage;

return(NULL);

}

current->pitch = qimage->bytesPerLine();

current->pixels = (void *)qimage->bits();

SDL_Win->setImage(qimage);

_this->UpdateRects = QT_NormalUpdate;

SDL_Win->setFullscreen(true);

/* We're done */

return(current);

}

/* Update the current mouse state and position */

void QT_UpdateMouse(_THIS)

{

QPoint point(-1, -1);

if ( SDL_Win->isActiveWindow() ) {

point = SDL_Win->mousePos();

}

if ( (point.x() >= 0) && (point.x() < SDL_VideoSurface->w) &&

(point.y() >= 0) && (point.y() < SDL_VideoSurface->h) ) {

SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);

SDL_PrivateMouseMotion(0, 0,

(Sint16)point.x(), (Sint16)point.y());

} else {

SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);

}

}

/* We don't actually allow hardware surfaces other than the main one */

static int QT_AllocHWSurface(_THIS, SDL_Surface *surface)

{

return(-1);

}

static void QT_FreeHWSurface(_THIS, SDL_Surface *surface)

{

return;

}

static int QT_LockHWSurface(_THIS, SDL_Surface *surface)

{

return(0);

}

static void QT_UnlockHWSurface(_THIS, SDL_Surface *surface)

{

return;

}

static void QT_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)

{

if(SDL_Win->lockScreen()) {

for(int i=0; i<numrects; ++i ) {

QRect rect(rects[i].x, rects[i].y,

rects[i].w, rects[i].h);

SDL_Win->repaintRect(rect);

}

SDL_Win->unlockScreen();

}

}

/* Is the system palette settable? */

int QT_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)

{

return -1;

}

void QT_VideoQuit(_THIS)

{

// This is dumb, but if I free this, the app doesn't exit correctly.

// Of course, this will leak memory if init video is done more than once.

// Sucks but such is life.

// -- David Hedbor

// delete SDL_Win;

// SDL_Win = 0;

}

static int QT_IconifyWindow(_THIS) {

SDL_Win->hide();

return true;

}

static SDL_GrabMode QT_GrabInput(_THIS, SDL_GrabMode mode) {

if(mode == SDL_GRAB_OFF) {

QPEApplication::grabKeyboard();

qApp->processEvents();

QPEApplication::ungrabKeyboard();

} else {

QPEApplication::grabKeyboard();

}

qApp->processEvents();

return mode;

}