[sdl_omap.git] / src / video / picogui / SDL_pgvideo.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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

    Micah Dowty
    micahjd@users.sourceforge.net
*/
#include "SDL_config.h"

#include "SDL_video.h"
#include "SDL_mouse.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_events_c.h"

#include "SDL_pgvideo.h"
#include "SDL_pgevents_c.h"

#define PGVID_DRIVER_NAME "picogui"

/* Initialization/Query functions */
static int PG_VideoInit(_THIS, SDL_PixelFormat *vformat);
static SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags);
static SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags);
static int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
static void PG_VideoQuit(_THIS);

/* Hardware surface functions */
static int PG_AllocHWSurface(_THIS, SDL_Surface *surface);
static int PG_LockHWSurface(_THIS, SDL_Surface *surface);
static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface);
static void PG_FreeHWSurface(_THIS, SDL_Surface *surface);

/* etc. */
static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects);

// The implementation dependent data for the window manager cursor
struct WMcursor {
  /* Our cursor is a PicoGUI theme */
  pghandle theme;
} ;

/* WM functions */
void PG_SetCaption(_THIS, const char *title, const char *icon);
WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, 
			      int w, int h, int hot_x, int hot_y);
void PG_FreeWMCursor (_THIS, WMcursor * cursor);
void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y);
int PG_ShowWMCursor (_THIS, WMcursor * cursor);

/* PicoGUI driver bootstrap functions */

static int PG_Available(void)
{
        /* FIXME: The current client lib doesn't give a way to see if the picogui
	 *        server is reachable without causing a fatal error if it isn't.
	 *        This should be fixed in cli_c2, but until then assume we can
	 *        connect. Since more common drivers like X11 are probed first anyway,
	 *        this shouldn't be a huge problem.
	 */
	return(1);
}

static void PG_DeleteDevice(SDL_VideoDevice *device)
{
	SDL_free(device->hidden);
	SDL_free(device);
}

static SDL_VideoDevice *PG_CreateDevice(int devindex)
{
	SDL_VideoDevice *device;

	/* Initialize all variables that we clean on shutdown */
	device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
	if ( device ) {
		SDL_memset(device, 0, (sizeof *device));
		device->hidden = (struct SDL_PrivateVideoData *)
				SDL_malloc((sizeof *device->hidden));
	}
	if ( (device == NULL) || (device->hidden == NULL) ) {
		SDL_OutOfMemory();
		if ( device ) {
			SDL_free(device);
		}
		return(0);
	}
	SDL_memset(device->hidden, 0, (sizeof *device->hidden));

	/* Set the function pointers */
	device->VideoInit = PG_VideoInit;
	device->ListModes = PG_ListModes;
	device->SetVideoMode = PG_SetVideoMode;
	device->CreateYUVOverlay = NULL;
	device->SetColors = PG_SetColors;
	device->UpdateRects = PG_UpdateRects;
	device->VideoQuit = PG_VideoQuit;
	device->AllocHWSurface = PG_AllocHWSurface;
	device->CheckHWBlit = NULL;
	device->FillHWRect = NULL;
	device->SetHWColorKey = NULL;
	device->SetHWAlpha = NULL;
	device->LockHWSurface = PG_LockHWSurface;
	device->UnlockHWSurface = PG_UnlockHWSurface;
	device->FlipHWSurface = NULL;
	device->FreeHWSurface = PG_FreeHWSurface;
	device->SetCaption = PG_SetCaption;
	device->SetIcon = NULL;
	device->IconifyWindow = NULL;
	device->GrabInput = NULL;

	device->PumpEvents = PG_PumpEvents;
	device->InitOSKeymap = PG_InitOSKeymap;

	device->ShowWMCursor = PG_ShowWMCursor;
	device->CreateWMCursor = PG_CreateWMCursor;
	device->FreeWMCursor = PG_FreeWMCursor;
	device->WarpWMCursor = PG_WarpWMCursor;

	device->free = PG_DeleteDevice;

	return device;
}

VideoBootStrap PG_bootstrap = {
	PGVID_DRIVER_NAME, "PicoGUI SDL driver",
	PG_Available, PG_CreateDevice
};


int PG_VideoInit(_THIS, SDL_PixelFormat *vformat)
{
        /* Connect to the PicoGUI server. No way to process command line args yet,
	 * but since this is based on SHM it's not important to be able to specify
	 * a remote PicoGUI server.
	 *
	 * FIXME: Another nitpick about the current client lib is there's no
	 *        clean way to indicate that command line args are not available.
	 */
        pgInit(0,(char**)"");
	this->hidden->mi = *pgGetVideoMode();

	/* Create a picogui application and canvas. We'll populate the canvas later. */
	this->hidden->wApp = pgRegisterApp(PG_APP_NORMAL,"SDL",0);
	this->hidden->wCanvas = pgNewWidget(PG_WIDGET_CANVAS,0,0);
	pgSetWidget(PGDEFAULT,
		    PG_WP_SIDE, PG_S_ALL,
		    0);

	PG_InitEvents(this);

	/* Determine the current screen size */
	this->info.current_w = this->hidden->mi.lxres;
	this->info.current_h = this->hidden->mi.lyres;

	/* Determine the screen depth.
	 * We change this during the SDL_SetVideoMode implementation... 
	 * Round up to the nearest Bytes per pixel
	 */
	vformat->BitsPerPixel = this->hidden->mi.bpp;
	vformat->BytesPerPixel = this->hidden->mi.bpp >> 3;
	if (this->hidden->mi.bpp & 7)
	  vformat->BytesPerPixel++;

	/* We're done! */
	return(0);
}

SDL_Rect **PG_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags)
{
   	 return (SDL_Rect **) -1;
}

SDL_Surface *PG_SetVideoMode(_THIS, SDL_Surface *current,
				int width, int height, int bpp, Uint32 flags)
{
	if ( this->hidden->bitmap ) {
	  /* Free old bitmap */
	  if (current->pixels) {
	    shmdt(current->pixels);
	    current->pixels = NULL;
	  }
	  pgDelete(this->hidden->bitmap);
	}

	/* Allocate the new pixel format for the screen */
	if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
		SDL_SetError("Couldn't allocate new pixel format for requested mode");
		return(NULL);
	}

	/* Create a new picogui bitmap */
	this->hidden->bitmap = pgCreateBitmap(width,height);
	this->hidden->shm = *pgMakeSHMBitmap(this->hidden->bitmap);
	current->pixels = shmat(shmget(this->hidden->shm.shm_key,
				       this->hidden->shm.shm_length,0),NULL,0);

	/* Reset the canvas, and draw persistent and incremental grops.
	 * Use mapping and offsets to center it.
	 */

	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0);

	/* 0. Set the source position during incremental rendering
	 */
	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0);
	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);

	/* 1. Incremental bitmap rendering
	 */
	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
		   0,0,0,0,this->hidden->bitmap);
	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);

	/* 2. Normal bitmap rendering
	 */
	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
		   0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap);
     
	/* Set up the new mode framebuffer */
	current->flags = 0;
	current->w = this->hidden->shm.width;
	current->h = this->hidden->shm.height;
	current->pitch = this->hidden->shm.pitch;

	/* Set up pixel format */
	current->format->BitsPerPixel = this->hidden->shm.bpp;
	current->format->BytesPerPixel = this->hidden->shm.bpp >> 3;
	if (this->hidden->shm.bpp & 7)
	  current->format->BytesPerPixel++;
	current->format->palette = NULL;
	current->format->Rmask = this->hidden->shm.red_mask;
	current->format->Gmask = this->hidden->shm.green_mask;
	current->format->Bmask = this->hidden->shm.blue_mask;
	current->format->Amask = this->hidden->shm.alpha_mask;
	current->format->Rshift = this->hidden->shm.red_shift;
	current->format->Gshift = this->hidden->shm.green_shift;
	current->format->Bshift = this->hidden->shm.blue_shift;
	current->format->Ashift = this->hidden->shm.alpha_shift;
	current->format->Rloss = 8 - this->hidden->shm.red_length;
	current->format->Gloss = 8 - this->hidden->shm.green_length;
	current->format->Bloss = 8 - this->hidden->shm.blue_length;
	current->format->Aloss = 8 - this->hidden->shm.alpha_length;

	/* Draw the app */
	pgUpdate();

	/* We're done */
	return(current);
}

/* We don't actually allow hardware surfaces other than the main one */
static int PG_AllocHWSurface(_THIS, SDL_Surface *surface)
{
	return(-1);
}
static void PG_FreeHWSurface(_THIS, SDL_Surface *surface)
{
	return;
}

/* We need to wait for vertical retrace on page flipped displays */
static int PG_LockHWSurface(_THIS, SDL_Surface *surface)
{
	return(0);
}

static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface)
{
	return;
}

static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
{
        int i;
	
	for (i = 0; i < numrects; i++) {
	        if (rects[i].w <= 0 || rects[i].h <= 0)
		  continue;

		/* Schedule an incremental update for this rectangle, using
		 * the canvas gropnodes we've loaded beforehand.
		 */
		pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0);
		pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, 
			   rects[i].x, rects[i].y,
			   rects[i].w, rects[i].h);
		pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1);
		pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4, 
			   rects[i].x, rects[i].y,
			   rects[i].w, rects[i].h);
		
		/* Go perform the update */
		pgWriteCmd(this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0);
		pgSubUpdate(this->hidden->wCanvas);
	}
}

int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
{
	/* do nothing of note. */
	return(1);
}

/* Note:  If we are terminated, this could be called in the middle of
   another SDL video routine -- notably UpdateRects.
*/
void PG_VideoQuit(_THIS)
{
	if (this->screen->pixels != NULL)
	{
		shmdt(this->screen->pixels);
		this->screen->pixels = NULL;
		pgDelete(this->hidden->bitmap);
	}
	pgDelete(this->hidden->wCanvas);
	pgDelete(this->hidden->wApp);
}

void PG_SetCaption(_THIS, const char *title, const char *icon)
{
        if (title != NULL)
	  pgReplaceText(this->hidden->wApp, title);
	pgUpdate();
}

/* FIXME: The cursor stuff isn't implemented yet! */

WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask, 
			      int w, int h, int hot_x, int hot_y)
{
        static WMcursor dummy;
        return &dummy;
}

void PG_FreeWMCursor (_THIS, WMcursor * cursor)
{
}

void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
}

int PG_ShowWMCursor (_THIS, WMcursor * cursor)
{
        return 1;
}
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 Sam Lantinga
	4
	5	This library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	This library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with this library; if not, write to the Free Software
	17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18
	19	Sam Lantinga
	20	slouken@libsdl.org
	21
	22	Micah Dowty
	23	micahjd@users.sourceforge.net
	24	*/
	25	#include "SDL_config.h"
	26
	27	#include "SDL_video.h"
	28	#include "SDL_mouse.h"
	29	#include "../SDL_sysvideo.h"
	30	#include "../SDL_pixels_c.h"
	31	#include "../../events/SDL_events_c.h"
	32
	33	#include "SDL_pgvideo.h"
	34	#include "SDL_pgevents_c.h"
	35
	36	#define PGVID_DRIVER_NAME "picogui"
	37
	38	/* Initialization/Query functions */
	39	static int PG_VideoInit(_THIS, SDL_PixelFormat *vformat);
	40	static SDL_Rect *PG_ListModes(_THIS, SDL_PixelFormat format, Uint32 flags);
	41	static SDL_Surface PG_SetVideoMode(_THIS, SDL_Surface current, int width, int height, int bpp, Uint32 flags);
	42	static int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors);
	43	static void PG_VideoQuit(_THIS);
	44
	45	/* Hardware surface functions */
	46	static int PG_AllocHWSurface(_THIS, SDL_Surface *surface);
	47	static int PG_LockHWSurface(_THIS, SDL_Surface *surface);
	48	static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface);
	49	static void PG_FreeHWSurface(_THIS, SDL_Surface *surface);
	50
	51	/* etc. */
	52	static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects);
	53
	54	// The implementation dependent data for the window manager cursor
	55	struct WMcursor {
	56	/* Our cursor is a PicoGUI theme */
	57	pghandle theme;
	58	} ;
	59
	60	/* WM functions */
	61	void PG_SetCaption(_THIS, const char title, const char icon);
	62	WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask,
	63	int w, int h, int hot_x, int hot_y);
	64	void PG_FreeWMCursor (_THIS, WMcursor * cursor);
65	void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y);
66	int PG_ShowWMCursor (_THIS, WMcursor * cursor);
67
68	/* PicoGUI driver bootstrap functions */
69
70	static int PG_Available(void)
71	{
72	/* FIXME: The current client lib doesn't give a way to see if the picogui
73	* server is reachable without causing a fatal error if it isn't.
74	* This should be fixed in cli_c2, but until then assume we can
75	* connect. Since more common drivers like X11 are probed first anyway,
76	* this shouldn't be a huge problem.
77	*/
78	return(1);
79	}
80
81	static void PG_DeleteDevice(SDL_VideoDevice *device)
82	{
83	SDL_free(device->hidden);
84	SDL_free(device);
85	}
86
87	static SDL_VideoDevice *PG_CreateDevice(int devindex)
88	{
89	SDL_VideoDevice *device;
90
91	/* Initialize all variables that we clean on shutdown */
92	device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice));
93	if ( device ) {
94	SDL_memset(device, 0, (sizeof *device));
95	device->hidden = (struct SDL_PrivateVideoData *)
96	SDL_malloc((sizeof *device->hidden));
97	}
98	if ( (device == NULL) \|\| (device->hidden == NULL) ) {
99	SDL_OutOfMemory();
100	if ( device ) {
101	SDL_free(device);
102	}
103	return(0);
104	}
105	SDL_memset(device->hidden, 0, (sizeof *device->hidden));
106
107	/* Set the function pointers */
108	device->VideoInit = PG_VideoInit;
109	device->ListModes = PG_ListModes;
110	device->SetVideoMode = PG_SetVideoMode;
111	device->CreateYUVOverlay = NULL;
112	device->SetColors = PG_SetColors;
113	device->UpdateRects = PG_UpdateRects;
114	device->VideoQuit = PG_VideoQuit;
115	device->AllocHWSurface = PG_AllocHWSurface;
116	device->CheckHWBlit = NULL;
117	device->FillHWRect = NULL;
118	device->SetHWColorKey = NULL;
119	device->SetHWAlpha = NULL;
120	device->LockHWSurface = PG_LockHWSurface;
121	device->UnlockHWSurface = PG_UnlockHWSurface;
122	device->FlipHWSurface = NULL;
123	device->FreeHWSurface = PG_FreeHWSurface;
124	device->SetCaption = PG_SetCaption;
125	device->SetIcon = NULL;
126	device->IconifyWindow = NULL;
127	device->GrabInput = NULL;
128
129	device->PumpEvents = PG_PumpEvents;
130	device->InitOSKeymap = PG_InitOSKeymap;
131
132	device->ShowWMCursor = PG_ShowWMCursor;
133	device->CreateWMCursor = PG_CreateWMCursor;
134	device->FreeWMCursor = PG_FreeWMCursor;
135	device->WarpWMCursor = PG_WarpWMCursor;
136
137	device->free = PG_DeleteDevice;
138
139	return device;
140	}
141
142	VideoBootStrap PG_bootstrap = {
143	PGVID_DRIVER_NAME, "PicoGUI SDL driver",
144	PG_Available, PG_CreateDevice
145	};
146
147
148	int PG_VideoInit(_THIS, SDL_PixelFormat *vformat)
149	{
150	/* Connect to the PicoGUI server. No way to process command line args yet,
151	* but since this is based on SHM it's not important to be able to specify
152	* a remote PicoGUI server.
153	*
154	* FIXME: Another nitpick about the current client lib is there's no
155	* clean way to indicate that command line args are not available.
156	*/
157	pgInit(0,(char**)"");
158	this->hidden->mi = *pgGetVideoMode();
159
160	/* Create a picogui application and canvas. We'll populate the canvas later. */
161	this->hidden->wApp = pgRegisterApp(PG_APP_NORMAL,"SDL",0);
162	this->hidden->wCanvas = pgNewWidget(PG_WIDGET_CANVAS,0,0);
163	pgSetWidget(PGDEFAULT,
164	PG_WP_SIDE, PG_S_ALL,
165	0);
166
167	PG_InitEvents(this);
168
169	/* Determine the current screen size */
170	this->info.current_w = this->hidden->mi.lxres;
171	this->info.current_h = this->hidden->mi.lyres;
172
173	/* Determine the screen depth.
174	* We change this during the SDL_SetVideoMode implementation...
175	* Round up to the nearest Bytes per pixel
176	*/
177	vformat->BitsPerPixel = this->hidden->mi.bpp;
178	vformat->BytesPerPixel = this->hidden->mi.bpp >> 3;
179	if (this->hidden->mi.bpp & 7)
180	vformat->BytesPerPixel++;
181
182	/* We're done! */
183	return(0);
184	}
185
186	SDL_Rect *PG_ListModes(_THIS, SDL_PixelFormat format, Uint32 flags)
187	{
188	return (SDL_Rect **) -1;
189	}
190
191	SDL_Surface PG_SetVideoMode(_THIS, SDL_Surface current,
192	int width, int height, int bpp, Uint32 flags)
193	{
194	if ( this->hidden->bitmap ) {
195	/* Free old bitmap */
196	if (current->pixels) {
197	shmdt(current->pixels);
198	current->pixels = NULL;
199	}
200	pgDelete(this->hidden->bitmap);
201	}
202
203	/* Allocate the new pixel format for the screen */
204	if ( ! SDL_ReallocFormat(current, bpp, 0, 0, 0, 0) ) {
205	SDL_SetError("Couldn't allocate new pixel format for requested mode");
206	return(NULL);
207	}
208
209	/* Create a new picogui bitmap */
210	this->hidden->bitmap = pgCreateBitmap(width,height);
211	this->hidden->shm = *pgMakeSHMBitmap(this->hidden->bitmap);
212	current->pixels = shmat(shmget(this->hidden->shm.shm_key,
213	this->hidden->shm.shm_length,0),NULL,0);
214
215	/* Reset the canvas, and draw persistent and incremental grops.
216	* Use mapping and offsets to center it.
217	*/
218
219	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_NUKE, 0);
220
221	/* 0. Set the source position during incremental rendering
222	*/
223	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 5, PG_GROP_SETSRC,0,0,0,0);
224	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
225
226	/* 1. Incremental bitmap rendering
227	*/
228	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
229	0,0,0,0,this->hidden->bitmap);
230	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROPFLAGS, 1, PG_GROPF_INCREMENTAL);
231
232	/* 2. Normal bitmap rendering
233	*/
234	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_GROP, 6, PG_GROP_BITMAP,
235	0,0,this->hidden->shm.width,this->hidden->shm.height,this->hidden->bitmap);
236
237	/* Set up the new mode framebuffer */
238	current->flags = 0;
239	current->w = this->hidden->shm.width;
240	current->h = this->hidden->shm.height;
241	current->pitch = this->hidden->shm.pitch;
242
243	/* Set up pixel format */
244	current->format->BitsPerPixel = this->hidden->shm.bpp;
245	current->format->BytesPerPixel = this->hidden->shm.bpp >> 3;
246	if (this->hidden->shm.bpp & 7)
247	current->format->BytesPerPixel++;
248	current->format->palette = NULL;
249	current->format->Rmask = this->hidden->shm.red_mask;
250	current->format->Gmask = this->hidden->shm.green_mask;
251	current->format->Bmask = this->hidden->shm.blue_mask;
252	current->format->Amask = this->hidden->shm.alpha_mask;
253	current->format->Rshift = this->hidden->shm.red_shift;
254	current->format->Gshift = this->hidden->shm.green_shift;
255	current->format->Bshift = this->hidden->shm.blue_shift;
256	current->format->Ashift = this->hidden->shm.alpha_shift;
257	current->format->Rloss = 8 - this->hidden->shm.red_length;
258	current->format->Gloss = 8 - this->hidden->shm.green_length;
259	current->format->Bloss = 8 - this->hidden->shm.blue_length;
260	current->format->Aloss = 8 - this->hidden->shm.alpha_length;
261
262	/* Draw the app */
263	pgUpdate();
264
265	/* We're done */
266	return(current);
267	}
268
269	/* We don't actually allow hardware surfaces other than the main one */
270	static int PG_AllocHWSurface(_THIS, SDL_Surface *surface)
271	{
272	return(-1);
273	}
274	static void PG_FreeHWSurface(_THIS, SDL_Surface *surface)
275	{
276	return;
277	}
278
279	/* We need to wait for vertical retrace on page flipped displays */
280	static int PG_LockHWSurface(_THIS, SDL_Surface *surface)
281	{
282	return(0);
283	}
284
285	static void PG_UnlockHWSurface(_THIS, SDL_Surface *surface)
286	{
287	return;
288	}
289
290	static void PG_UpdateRects(_THIS, int numrects, SDL_Rect *rects)
291	{
292	int i;
293
294	for (i = 0; i < numrects; i++) {
295	if (rects[i].w <= 0 \|\| rects[i].h <= 0)
296	continue;
297
298	/* Schedule an incremental update for this rectangle, using
299	* the canvas gropnodes we've loaded beforehand.
300	*/
301	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 0);
302	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
303	rects[i].x, rects[i].y,
304	rects[i].w, rects[i].h);
305	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_FINDGROP, 1, 1);
306	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_MOVEGROP, 4,
307	rects[i].x, rects[i].y,
308	rects[i].w, rects[i].h);
309
310	/* Go perform the update */
311	pgWriteCmd(this->hidden->wCanvas, PGCANVAS_INCREMENTAL, 0);
312	pgSubUpdate(this->hidden->wCanvas);
313	}
314	}
315
316	int PG_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors)
317	{
318	/* do nothing of note. */
319	return(1);
320	}
321
322	/* Note: If we are terminated, this could be called in the middle of
323	another SDL video routine -- notably UpdateRects.
324	*/
325	void PG_VideoQuit(_THIS)
326	{
327	if (this->screen->pixels != NULL)
328	{
329	shmdt(this->screen->pixels);
330	this->screen->pixels = NULL;
331	pgDelete(this->hidden->bitmap);
332	}
333	pgDelete(this->hidden->wCanvas);
334	pgDelete(this->hidden->wApp);
335	}
336
337	void PG_SetCaption(_THIS, const char title, const char icon)
338	{
339	if (title != NULL)
340	pgReplaceText(this->hidden->wApp, title);
341	pgUpdate();
342	}
343
344	/* FIXME: The cursor stuff isn't implemented yet! */
345
346	WMcursor * PG_CreateWMCursor (_THIS,Uint8 * data, Uint8 * mask,
347	int w, int h, int hot_x, int hot_y)
348	{
349	static WMcursor dummy;
350	return &dummy;
351	}
352
353	void PG_FreeWMCursor (_THIS, WMcursor * cursor)
354	{
355	}
356
357	void PG_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
358	{
359	}
360
361	int PG_ShowWMCursor (_THIS, WMcursor * cursor)
362	{
363	return 1;
364	}