diff src/video/SDL_cursor.c @ 1662:782fd950bd46 SDL-1.3

Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 5f52867ba65c
children 4da1ee79c9af
line wrap: on
line diff
--- a/src/video/SDL_cursor.c	Sun May 21 17:27:13 2006 +0000
+++ b/src/video/SDL_cursor.c	Sun May 28 13:04:16 2006 +0000
@@ -41,514 +41,533 @@
 SDL_mutex *SDL_cursorlock = NULL;
 
 /* Public functions */
-void SDL_CursorQuit(void)
+void
+SDL_CursorQuit (void)
 {
-	if ( SDL_cursor != NULL ) {
-		SDL_Cursor *cursor;
+    if (SDL_cursor != NULL) {
+        SDL_Cursor *cursor;
 
-		SDL_cursorstate &= ~CURSOR_VISIBLE;
-		if ( SDL_cursor != SDL_defcursor ) {
-			SDL_FreeCursor(SDL_cursor);
-		}
-		SDL_cursor = NULL;
-		if ( SDL_defcursor != NULL ) {
-			cursor = SDL_defcursor;
-			SDL_defcursor = NULL;
-			SDL_FreeCursor(cursor);
-		}
-	}
-	if ( SDL_cursorlock != NULL ) {
-		SDL_DestroyMutex(SDL_cursorlock);
-		SDL_cursorlock = NULL;
-	}
+        SDL_cursorstate &= ~CURSOR_VISIBLE;
+        if (SDL_cursor != SDL_defcursor) {
+            SDL_FreeCursor (SDL_cursor);
+        }
+        SDL_cursor = NULL;
+        if (SDL_defcursor != NULL) {
+            cursor = SDL_defcursor;
+            SDL_defcursor = NULL;
+            SDL_FreeCursor (cursor);
+        }
+    }
+    if (SDL_cursorlock != NULL) {
+        SDL_DestroyMutex (SDL_cursorlock);
+        SDL_cursorlock = NULL;
+    }
 }
-int SDL_CursorInit(Uint32 multithreaded)
+int
+SDL_CursorInit (Uint32 multithreaded)
 {
-	/* We don't have mouse focus, and the cursor isn't drawn yet */
+    /* We don't have mouse focus, and the cursor isn't drawn yet */
 #ifndef IPOD
-	SDL_cursorstate = CURSOR_VISIBLE;
+    SDL_cursorstate = CURSOR_VISIBLE;
 #endif
 
-	/* Create the default cursor */
-	if ( SDL_defcursor == NULL ) {
-		SDL_defcursor = SDL_CreateCursor(default_cdata, default_cmask,
-					DEFAULT_CWIDTH, DEFAULT_CHEIGHT,
-						DEFAULT_CHOTX, DEFAULT_CHOTY);
-		SDL_SetCursor(SDL_defcursor);
-	}
+    /* Create the default cursor */
+    if (SDL_defcursor == NULL) {
+        SDL_defcursor = SDL_CreateCursor (default_cdata, default_cmask,
+                                          DEFAULT_CWIDTH, DEFAULT_CHEIGHT,
+                                          DEFAULT_CHOTX, DEFAULT_CHOTY);
+        SDL_SetCursor (SDL_defcursor);
+    }
 
-	/* Create a lock if necessary */
-	if ( multithreaded ) {
-		SDL_cursorlock = SDL_CreateMutex();
-	}
+    /* Create a lock if necessary */
+    if (multithreaded) {
+        SDL_cursorlock = SDL_CreateMutex ();
+    }
 
-	/* That's it! */
-	return(0);
+    /* That's it! */
+    return (0);
 }
 
 /* Multi-thread support for cursors */
 #ifndef SDL_LockCursor
-void SDL_LockCursor(void)
+void
+SDL_LockCursor (void)
 {
-	if ( SDL_cursorlock ) {
-		SDL_mutexP(SDL_cursorlock);
-	}
+    if (SDL_cursorlock) {
+        SDL_mutexP (SDL_cursorlock);
+    }
 }
 #endif
 #ifndef SDL_UnlockCursor
-void SDL_UnlockCursor(void)
+void
+SDL_UnlockCursor (void)
 {
-	if ( SDL_cursorlock ) {
-		SDL_mutexV(SDL_cursorlock);
-	}
+    if (SDL_cursorlock) {
+        SDL_mutexV (SDL_cursorlock);
+    }
 }
 #endif
 
 /* Software cursor drawing support */
-SDL_Cursor * SDL_CreateCursor (Uint8 *data, Uint8 *mask, 
-					int w, int h, int hot_x, int hot_y)
+SDL_Cursor *
+SDL_CreateCursor (Uint8 * data, Uint8 * mask,
+                  int w, int h, int hot_x, int hot_y)
 {
-	SDL_VideoDevice *video = current_video;
-	int savelen;
-	int i;
-	SDL_Cursor *cursor;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+    int savelen;
+    int i;
+    SDL_Cursor *cursor;
 
-	/* Make sure the width is a multiple of 8 */
-	w = ((w+7)&~7);
+    /* Make sure the width is a multiple of 8 */
+    w = ((w + 7) & ~7);
 
-	/* Sanity check the hot spot */
-	if ( (hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h) ) {
-		SDL_SetError("Cursor hot spot doesn't lie within cursor");
-		return(NULL);
-	}
+    /* Sanity check the hot spot */
+    if ((hot_x < 0) || (hot_y < 0) || (hot_x >= w) || (hot_y >= h)) {
+        SDL_SetError ("Cursor hot spot doesn't lie within cursor");
+        return (NULL);
+    }
 
-	/* Allocate memory for the cursor */
-	cursor = (SDL_Cursor *)SDL_malloc(sizeof *cursor);
-	if ( cursor == NULL ) {
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	savelen = (w*4)*h;
-	cursor->area.x = 0;
-	cursor->area.y = 0;
-	cursor->area.w = w;
-	cursor->area.h = h;
-	cursor->hot_x = hot_x;
-	cursor->hot_y = hot_y;
-	cursor->data = (Uint8 *)SDL_malloc((w/8)*h*2);
-	cursor->mask = cursor->data+((w/8)*h);
-	cursor->save[0] = (Uint8 *)SDL_malloc(savelen*2);
-	cursor->save[1] = cursor->save[0] + savelen;
-	cursor->wm_cursor = NULL;
-	if ( ! cursor->data || ! cursor->save[0] ) {
-		SDL_FreeCursor(cursor);
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	for ( i=((w/8)*h)-1; i>=0; --i ) {
-		cursor->data[i] = data[i];
-		cursor->mask[i] = mask[i] | data[i];
-	}
-	SDL_memset(cursor->save[0], 0, savelen*2);
+    /* Allocate memory for the cursor */
+    cursor = (SDL_Cursor *) SDL_malloc (sizeof *cursor);
+    if (cursor == NULL) {
+        SDL_OutOfMemory ();
+        return (NULL);
+    }
+    savelen = (w * 4) * h;
+    cursor->area.x = 0;
+    cursor->area.y = 0;
+    cursor->area.w = w;
+    cursor->area.h = h;
+    cursor->hot_x = hot_x;
+    cursor->hot_y = hot_y;
+    cursor->data = (Uint8 *) SDL_malloc ((w / 8) * h * 2);
+    cursor->mask = cursor->data + ((w / 8) * h);
+    cursor->save[0] = (Uint8 *) SDL_malloc (savelen * 2);
+    cursor->save[1] = cursor->save[0] + savelen;
+    cursor->wm_cursor = NULL;
+    if (!cursor->data || !cursor->save[0]) {
+        SDL_FreeCursor (cursor);
+        SDL_OutOfMemory ();
+        return (NULL);
+    }
+    for (i = ((w / 8) * h) - 1; i >= 0; --i) {
+        cursor->data[i] = data[i];
+        cursor->mask[i] = mask[i] | data[i];
+    }
+    SDL_memset (cursor->save[0], 0, savelen * 2);
 
-	/* If the window manager gives us a good cursor, we're done! */
-	if ( video->CreateWMCursor ) {
-		cursor->wm_cursor = video->CreateWMCursor(video, data, mask,
-							w, h, hot_x, hot_y);
-	} else {
-		cursor->wm_cursor = NULL;
-	}
-	return(cursor);
+    /* If the window manager gives us a good cursor, we're done! */
+    if (_this->CreateWMCursor) {
+        cursor->wm_cursor = _this->CreateWMCursor (_this, data, mask,
+                                                   w, h, hot_x, hot_y);
+    } else {
+        cursor->wm_cursor = NULL;
+    }
+    return (cursor);
 }
 
 /* SDL_SetCursor(NULL) can be used to force the cursor redraw,
    if this is desired for any reason.  This is used when setting
    the video mode and when the SDL window gains the mouse focus.
  */
-void SDL_SetCursor (SDL_Cursor *cursor)
+void
+SDL_SetCursor (SDL_Cursor * cursor)
 {
-	SDL_VideoDevice *video = current_video;
-	SDL_VideoDevice *this  = current_video;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
 
-	/* Make sure that the video subsystem has been initialized */
-	if ( ! video ) {
-		return;
-	}
+    /* Make sure that the video subsystem has been initialized */
+    if (!_this) {
+        return;
+    }
 
-	/* Prevent the event thread from moving the mouse */
-	SDL_LockCursor();
+    /* Prevent the event thread from moving the mouse */
+    SDL_LockCursor ();
 
-	/* Set the new cursor */
-	if ( cursor && (cursor != SDL_cursor) ) {
-		/* Erase the current mouse position */
-		if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) {
-			SDL_EraseCursor(SDL_VideoSurface);
-		} else if ( video->MoveWMCursor ) {
-			/* If the video driver is moving the cursor directly,
-			   it needs to hide the old cursor before (possibly)
-			   showing the new one.  (But don't erase NULL cursor)
-			 */
-			if ( SDL_cursor ) {
-				video->ShowWMCursor(this, NULL);
-			}
-		}
-		SDL_cursor = cursor;
-	}
+    /* Set the new cursor */
+    if (cursor && (cursor != SDL_cursor)) {
+        /* Erase the current mouse position */
+        if (SHOULD_DRAWCURSOR (SDL_cursorstate)) {
+            SDL_EraseCursor (SDL_VideoSurface);
+        } else if (_this->MoveWMCursor) {
+            /* If the video driver is moving the cursor directly,
+               it needs to hide the old cursor before (possibly)
+               showing the new one.  (But don't erase NULL cursor)
+             */
+            if (SDL_cursor) {
+                _this->ShowWMCursor (_this, NULL);
+            }
+        }
+        SDL_cursor = cursor;
+    }
 
-	/* Draw the new mouse cursor */
-	if ( SDL_cursor && (SDL_cursorstate&CURSOR_VISIBLE) ) {
-		/* Use window manager cursor if possible */
-		if ( SDL_cursor->wm_cursor && 
-	             video->ShowWMCursor(this, SDL_cursor->wm_cursor) ) {
-			SDL_cursorstate &= ~CURSOR_USINGSW;
-		} else {
-			SDL_cursorstate |= CURSOR_USINGSW;
-			if ( video->ShowWMCursor ) {
-				video->ShowWMCursor(this, NULL);
-			}
-			{ int x, y;
-				SDL_GetMouseState(&x, &y);
-				SDL_cursor->area.x = (x - SDL_cursor->hot_x);
-				SDL_cursor->area.y = (y - SDL_cursor->hot_y);
-			}
-			SDL_DrawCursor(SDL_VideoSurface);
-		}
-	} else {
-		/* Erase window manager mouse (cursor not visible) */
-		if ( SDL_cursor && (SDL_cursorstate & CURSOR_USINGSW) ) {
-			SDL_EraseCursor(SDL_VideoSurface);
-		} else {
-			if ( video ) {
-				video->ShowWMCursor(this, NULL);
-			}
-		}
-	}
-	SDL_UnlockCursor();
+    /* Draw the new mouse cursor */
+    if (SDL_cursor && (SDL_cursorstate & CURSOR_VISIBLE)) {
+        /* Use window manager cursor if possible */
+        if (SDL_cursor->wm_cursor &&
+            _this->ShowWMCursor (_this, SDL_cursor->wm_cursor)) {
+            SDL_cursorstate &= ~CURSOR_USINGSW;
+        } else {
+            SDL_cursorstate |= CURSOR_USINGSW;
+            if (_this->ShowWMCursor) {
+                _this->ShowWMCursor (_this, NULL);
+            }
+            {
+                int x, y;
+                SDL_GetMouseState (&x, &y);
+                SDL_cursor->area.x = (x - SDL_cursor->hot_x);
+                SDL_cursor->area.y = (y - SDL_cursor->hot_y);
+            }
+            SDL_DrawCursor (SDL_VideoSurface);
+        }
+    } else {
+        /* Erase window manager mouse (cursor not visible) */
+        if (SDL_cursor && (SDL_cursorstate & CURSOR_USINGSW)) {
+            SDL_EraseCursor (SDL_VideoSurface);
+        } else {
+            if (_this) {
+                _this->ShowWMCursor (_this, NULL);
+            }
+        }
+    }
+    SDL_UnlockCursor ();
 }
 
-SDL_Cursor * SDL_GetCursor (void)
+SDL_Cursor *
+SDL_GetCursor (void)
 {
-	return(SDL_cursor);
+    return (SDL_cursor);
 }
 
-void SDL_FreeCursor (SDL_Cursor *cursor)
+void
+SDL_FreeCursor (SDL_Cursor * cursor)
 {
-	if ( cursor ) {
-		if ( cursor == SDL_cursor ) {
-			SDL_SetCursor(SDL_defcursor);
-		}
-		if ( cursor != SDL_defcursor ) {
-			SDL_VideoDevice *video = current_video;
-			SDL_VideoDevice *this  = current_video;
+    if (cursor) {
+        if (cursor == SDL_cursor) {
+            SDL_SetCursor (SDL_defcursor);
+        }
+        if (cursor != SDL_defcursor) {
+            SDL_VideoDevice *_this = SDL_GetVideoDevice ();
 
-			if ( cursor->data ) {
-				SDL_free(cursor->data);
-			}
-			if ( cursor->save[0] ) {
-				SDL_free(cursor->save[0]);
-			}
-			if ( video && cursor->wm_cursor ) {
-				video->FreeWMCursor(this, cursor->wm_cursor);
-			}
-			SDL_free(cursor);
-		}
-	}
+            if (cursor->data) {
+                SDL_free (cursor->data);
+            }
+            if (cursor->save[0]) {
+                SDL_free (cursor->save[0]);
+            }
+            if (_this && cursor->wm_cursor) {
+                _this->FreeWMCursor (_this, cursor->wm_cursor);
+            }
+            SDL_free (cursor);
+        }
+    }
 }
 
-int SDL_ShowCursor (int toggle)
+int
+SDL_ShowCursor (int toggle)
 {
-	int showing;
+    int showing;
 
-	showing = (SDL_cursorstate & CURSOR_VISIBLE);
-	if ( toggle >= 0 ) {
-		SDL_LockCursor();
-		if ( toggle ) {
-			SDL_cursorstate |= CURSOR_VISIBLE;
-		} else {
-			SDL_cursorstate &= ~CURSOR_VISIBLE;
-		}
-		SDL_UnlockCursor();
-		if ( (SDL_cursorstate & CURSOR_VISIBLE) != showing ) {
-			SDL_VideoDevice *video = current_video;
-			SDL_VideoDevice *this  = current_video;
+    showing = (SDL_cursorstate & CURSOR_VISIBLE);
+    if (toggle >= 0) {
+        SDL_LockCursor ();
+        if (toggle) {
+            SDL_cursorstate |= CURSOR_VISIBLE;
+        } else {
+            SDL_cursorstate &= ~CURSOR_VISIBLE;
+        }
+        SDL_UnlockCursor ();
+        if ((SDL_cursorstate & CURSOR_VISIBLE) != showing) {
+            SDL_VideoDevice *_this = SDL_GetVideoDevice ();
 
-			SDL_SetCursor(NULL);
-			if ( video && video->CheckMouseMode ) {
-				video->CheckMouseMode(this);
-			}
-		}
-	} else {
-		/* Query current state */ ;
-	}
-	return(showing ? 1 : 0);
+            SDL_SetCursor (NULL);
+            if (_this && _this->CheckMouseMode) {
+                _this->CheckMouseMode (_this);
+            }
+        }
+    } else {
+        /* Query current state */ ;
+    }
+    return (showing ? 1 : 0);
 }
 
-void SDL_WarpMouse (Uint16 x, Uint16 y)
+void
+SDL_WarpMouse (Uint16 x, Uint16 y)
 {
-	SDL_VideoDevice *video = current_video;
-	SDL_VideoDevice *this  = current_video;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
 
-	if ( !video || !SDL_PublicSurface ) {
-		SDL_SetError("A video mode must be set before warping mouse");
-		return;
-	}
+    if (!_this || !SDL_PublicSurface) {
+        SDL_SetError ("A video mode must be set before warping mouse");
+        return;
+    }
 
-	/* If we have an offset video mode, offset the mouse coordinates */
-	if (this->screen->pitch == 0) {
-		x += this->screen->offset / this->screen->format->BytesPerPixel;
-		y += this->screen->offset;
-	} else {
-		x += (this->screen->offset % this->screen->pitch) /
-		      this->screen->format->BytesPerPixel;
-		y += (this->screen->offset / this->screen->pitch);
-	}
+    /* If we have an offset video mode, offset the mouse coordinates */
+    if (SDL_VideoSurface->pitch == 0) {
+        x += SDL_VideoSurface->offset /
+            SDL_VideoSurface->format->BytesPerPixel;
+        y += SDL_VideoSurface->offset;
+    } else {
+        x += (SDL_VideoSurface->offset % SDL_VideoSurface->pitch) /
+            SDL_VideoSurface->format->BytesPerPixel;
+        y += (SDL_VideoSurface->offset / SDL_VideoSurface->pitch);
+    }
 
-	/* This generates a mouse motion event */
-	if ( video->WarpWMCursor ) {
-		video->WarpWMCursor(this, x, y);
-	} else {
-		SDL_PrivateMouseMotion(0, 0, x, y);
-	}
+    /* This generates a mouse motion event */
+    if (_this->WarpWMCursor) {
+        _this->WarpWMCursor (_this, x, y);
+    } else {
+        SDL_PrivateMouseMotion (0, 0, x, y);
+    }
 }
 
-void SDL_MoveCursor(int x, int y)
+void
+SDL_MoveCursor (int x, int y)
 {
-	SDL_VideoDevice *video = current_video;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
 
-	/* Erase and update the current mouse position */
-	if ( SHOULD_DRAWCURSOR(SDL_cursorstate) ) {
-		/* Erase and redraw mouse cursor in new position */
-		SDL_LockCursor();
-		SDL_EraseCursor(SDL_VideoSurface);
-		SDL_cursor->area.x = (x - SDL_cursor->hot_x);
-		SDL_cursor->area.y = (y - SDL_cursor->hot_y);
-		SDL_DrawCursor(SDL_VideoSurface);
-		SDL_UnlockCursor();
-	} else if ( video->MoveWMCursor ) {
-		video->MoveWMCursor(video, x, y);
-	}
+    /* Erase and update the current mouse position */
+    if (SHOULD_DRAWCURSOR (SDL_cursorstate)) {
+        /* Erase and redraw mouse cursor in new position */
+        SDL_LockCursor ();
+        SDL_EraseCursor (SDL_VideoSurface);
+        SDL_cursor->area.x = (x - SDL_cursor->hot_x);
+        SDL_cursor->area.y = (y - SDL_cursor->hot_y);
+        SDL_DrawCursor (SDL_VideoSurface);
+        SDL_UnlockCursor ();
+    } else if (_this->MoveWMCursor) {
+        _this->MoveWMCursor (_this, x, y);
+    }
 }
 
 /* Keep track of the current cursor colors */
 static int palette_changed = 1;
 static Uint8 pixels8[2];
 
-void SDL_CursorPaletteChanged(void)
+void
+SDL_CursorPaletteChanged (void)
 {
-	palette_changed = 1;
+    palette_changed = 1;
 }
 
-void SDL_MouseRect(SDL_Rect *area)
+void
+SDL_MouseRect (SDL_Rect * area)
 {
-	int clip_diff;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+    int clip_diff;
 
-	*area = SDL_cursor->area;
-	if ( area->x < 0 ) {
-		area->w += area->x;
-		area->x = 0;
-	}
-	if ( area->y < 0 ) {
-		area->h += area->y;
-		area->y = 0;
-	}
-	clip_diff = (area->x+area->w)-SDL_VideoSurface->w;
-	if ( clip_diff > 0 ) {
-		area->w = area->w < clip_diff ? 0 : area->w-clip_diff;
-	}
-	clip_diff = (area->y+area->h)-SDL_VideoSurface->h;
-	if ( clip_diff > 0 ) {
-		area->h = area->h < clip_diff ? 0 : area->h-clip_diff;
-	}
+    *area = SDL_cursor->area;
+    if (area->x < 0) {
+        area->w += area->x;
+        area->x = 0;
+    }
+    if (area->y < 0) {
+        area->h += area->y;
+        area->y = 0;
+    }
+    clip_diff = (area->x + area->w) - SDL_VideoSurface->w;
+    if (clip_diff > 0) {
+        area->w = area->w < clip_diff ? 0 : area->w - clip_diff;
+    }
+    clip_diff = (area->y + area->h) - SDL_VideoSurface->h;
+    if (clip_diff > 0) {
+        area->h = area->h < clip_diff ? 0 : area->h - clip_diff;
+    }
 }
 
-static void SDL_DrawCursorFast(SDL_Surface *screen, SDL_Rect *area)
+static void
+SDL_DrawCursorFast (SDL_Surface * screen, SDL_Rect * area)
 {
-	const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
-	int i, w, h;
-	Uint8 *data, datab;
-	Uint8 *mask, maskb;
+    const Uint32 pixels[2] = { 0xFFFFFFFF, 0x00000000 };
+    int i, w, h;
+    Uint8 *data, datab;
+    Uint8 *mask, maskb;
 
-	data = SDL_cursor->data + area->y * SDL_cursor->area.w/8;
-	mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8;
-	switch (screen->format->BytesPerPixel) {
+    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
+    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
+    switch (screen->format->BytesPerPixel) {
 
-	    case 1: {
-		Uint8 *dst;
-		int dstskip;
+    case 1:
+        {
+            Uint8 *dst;
+            int dstskip;
 
-		if ( palette_changed ) {
-			pixels8[0] = (Uint8)SDL_MapRGB(screen->format, 255, 255, 255);
-			pixels8[1] = (Uint8)SDL_MapRGB(screen->format, 0, 0, 0);
-			palette_changed = 0;
-		}
-		dst = (Uint8 *)screen->pixels +
-                       (SDL_cursor->area.y+area->y)*screen->pitch +
-                       SDL_cursor->area.x;
-		dstskip = screen->pitch-area->w;
+            if (palette_changed) {
+                pixels8[0] =
+                    (Uint8) SDL_MapRGB (screen->format, 255, 255, 255);
+                pixels8[1] = (Uint8) SDL_MapRGB (screen->format, 0, 0, 0);
+                palette_changed = 0;
+            }
+            dst = (Uint8 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch +
+                SDL_cursor->area.x;
+            dstskip = screen->pitch - area->w;
 
-		for ( h=area->h; h; h-- ) {
-			for ( w=area->w/8; w; w-- ) {
-				maskb = *mask++;
-				datab = *data++;
-				for ( i=0; i<8; ++i ) {
-					if ( maskb & 0x80 ) {
-						*dst = pixels8[datab>>7];
-					}
-					maskb <<= 1;
-					datab <<= 1;
-					dst++;
-				}
-			}
-			dst += dstskip;
-		}
-	    }
-	    break;
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = pixels8[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
 
-	    case 2: {
-		Uint16 *dst;
-		int dstskip;
+    case 2:
+        {
+            Uint16 *dst;
+            int dstskip;
 
-		dst = (Uint16 *)screen->pixels +
-                       (SDL_cursor->area.y+area->y)*screen->pitch/2 +
-                       SDL_cursor->area.x;
-		dstskip = (screen->pitch/2)-area->w;
+            dst = (Uint16 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch / 2 +
+                SDL_cursor->area.x;
+            dstskip = (screen->pitch / 2) - area->w;
 
-		for ( h=area->h; h; h-- ) {
-			for ( w=area->w/8; w; w-- ) {
-				maskb = *mask++;
-				datab = *data++;
-				for ( i=0; i<8; ++i ) {
-					if ( maskb & 0x80 ) {
-						*dst = (Uint16)pixels[datab>>7];
-					}
-					maskb <<= 1;
-					datab <<= 1;
-					dst++;
-				}
-			}
-			dst += dstskip;
-		}
-	    }
-	    break;
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = (Uint16) pixels[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
 
-	    case 3: {
-		Uint8 *dst;
-		int dstskip;
+    case 3:
+        {
+            Uint8 *dst;
+            int dstskip;
 
-		dst = (Uint8 *)screen->pixels +
-                       (SDL_cursor->area.y+area->y)*screen->pitch +
-                       SDL_cursor->area.x*3;
-		dstskip = screen->pitch-area->w*3;
+            dst = (Uint8 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch +
+                SDL_cursor->area.x * 3;
+            dstskip = screen->pitch - area->w * 3;
 
-		for ( h=area->h; h; h-- ) {
-			for ( w=area->w/8; w; w-- ) {
-				maskb = *mask++;
-				datab = *data++;
-				for ( i=0; i<8; ++i ) {
-					if ( maskb & 0x80 ) {
-						SDL_memset(dst,pixels[datab>>7],3);
-					}
-					maskb <<= 1;
-					datab <<= 1;
-					dst += 3;
-				}
-			}
-			dst += dstskip;
-		}
-	    }
-	    break;
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            SDL_memset (dst, pixels[datab >> 7], 3);
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst += 3;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
 
-	    case 4: {
-		Uint32 *dst;
-		int dstskip;
+    case 4:
+        {
+            Uint32 *dst;
+            int dstskip;
 
-		dst = (Uint32 *)screen->pixels +
-                       (SDL_cursor->area.y+area->y)*screen->pitch/4 +
-                       SDL_cursor->area.x;
-		dstskip = (screen->pitch/4)-area->w;
+            dst = (Uint32 *) screen->pixels +
+                (SDL_cursor->area.y + area->y) * screen->pitch / 4 +
+                SDL_cursor->area.x;
+            dstskip = (screen->pitch / 4) - area->w;
 
-		for ( h=area->h; h; h-- ) {
-			for ( w=area->w/8; w; w-- ) {
-				maskb = *mask++;
-				datab = *data++;
-				for ( i=0; i<8; ++i ) {
-					if ( maskb & 0x80 ) {
-						*dst = pixels[datab>>7];
-					}
-					maskb <<= 1;
-					datab <<= 1;
-					dst++;
-				}
-			}
-			dst += dstskip;
-		}
-	    }
-	    break;
-	}
+            for (h = area->h; h; h--) {
+                for (w = area->w / 8; w; w--) {
+                    maskb = *mask++;
+                    datab = *data++;
+                    for (i = 0; i < 8; ++i) {
+                        if (maskb & 0x80) {
+                            *dst = pixels[datab >> 7];
+                        }
+                        maskb <<= 1;
+                        datab <<= 1;
+                        dst++;
+                    }
+                }
+                dst += dstskip;
+            }
+        }
+        break;
+    }
 }
 
-static void SDL_DrawCursorSlow(SDL_Surface *screen, SDL_Rect *area)
+static void
+SDL_DrawCursorSlow (SDL_Surface * screen, SDL_Rect * area)
 {
-	const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
-	int h;
-	int x, minx, maxx;
-	Uint8 *data, datab = 0;
-	Uint8 *mask, maskb = 0;
-	Uint8 *dst;
-	int dstbpp, dstskip;
+    const Uint32 pixels[2] = { 0xFFFFFF, 0x000000 };
+    int h;
+    int x, minx, maxx;
+    Uint8 *data, datab = 0;
+    Uint8 *mask, maskb = 0;
+    Uint8 *dst;
+    int dstbpp, dstskip;
 
-	data = SDL_cursor->data + area->y * SDL_cursor->area.w/8;
-	mask = SDL_cursor->mask + area->y * SDL_cursor->area.w/8;
-	dstbpp = screen->format->BytesPerPixel;
-	dst = (Uint8 *)screen->pixels +
-                       (SDL_cursor->area.y+area->y)*screen->pitch +
-                       SDL_cursor->area.x*dstbpp;
-	dstskip = screen->pitch-SDL_cursor->area.w*dstbpp;
+    data = SDL_cursor->data + area->y * SDL_cursor->area.w / 8;
+    mask = SDL_cursor->mask + area->y * SDL_cursor->area.w / 8;
+    dstbpp = screen->format->BytesPerPixel;
+    dst = (Uint8 *) screen->pixels +
+        (SDL_cursor->area.y + area->y) * screen->pitch +
+        SDL_cursor->area.x * dstbpp;
+    dstskip = screen->pitch - SDL_cursor->area.w * dstbpp;
 
-	minx = area->x;
-	maxx = area->x+area->w;
-	if ( screen->format->BytesPerPixel == 1 ) {
-		if ( palette_changed ) {
-			pixels8[0] = (Uint8)SDL_MapRGB(screen->format, 255, 255, 255);
-			pixels8[1] = (Uint8)SDL_MapRGB(screen->format, 0, 0, 0);
-			palette_changed = 0;
-		}
-		for ( h=area->h; h; h-- ) {
-			for ( x=0; x<SDL_cursor->area.w; ++x ) {
-				if ( (x%8) == 0 ) {
-					maskb = *mask++;
-					datab = *data++;
-				}
-				if ( (x >= minx) && (x < maxx) ) {
-					if ( maskb & 0x80 ) {
-						SDL_memset(dst, pixels8[datab>>7], dstbpp);
-					}
-				}
-				maskb <<= 1;
-				datab <<= 1;
-				dst += dstbpp;
-			}
-			dst += dstskip;
-		}
-	} else {
-		for ( h=area->h; h; h-- ) {
-			for ( x=0; x<SDL_cursor->area.w; ++x ) {
-				if ( (x%8) == 0 ) {
-					maskb = *mask++;
-					datab = *data++;
-				}
-				if ( (x >= minx) && (x < maxx) ) {
-					if ( maskb & 0x80 ) {
-						SDL_memset(dst, pixels[datab>>7], dstbpp);
-					}
-				}
-				maskb <<= 1;
-				datab <<= 1;
-				dst += dstbpp;
-			}
-			dst += dstskip;
-		}
-	}
+    minx = area->x;
+    maxx = area->x + area->w;
+    if (screen->format->BytesPerPixel == 1) {
+        if (palette_changed) {
+            pixels8[0] = (Uint8) SDL_MapRGB (screen->format, 255, 255, 255);
+            pixels8[1] = (Uint8) SDL_MapRGB (screen->format, 0, 0, 0);
+            palette_changed = 0;
+        }
+        for (h = area->h; h; h--) {
+            for (x = 0; x < SDL_cursor->area.w; ++x) {
+                if ((x % 8) == 0) {
+                    maskb = *mask++;
+                    datab = *data++;
+                }
+                if ((x >= minx) && (x < maxx)) {
+                    if (maskb & 0x80) {
+                        SDL_memset (dst, pixels8[datab >> 7], dstbpp);
+                    }
+                }
+                maskb <<= 1;
+                datab <<= 1;
+                dst += dstbpp;
+            }
+            dst += dstskip;
+        }
+    } else {
+        for (h = area->h; h; h--) {
+            for (x = 0; x < SDL_cursor->area.w; ++x) {
+                if ((x % 8) == 0) {
+                    maskb = *mask++;
+                    datab = *data++;
+                }
+                if ((x >= minx) && (x < maxx)) {
+                    if (maskb & 0x80) {
+                        SDL_memset (dst, pixels[datab >> 7], dstbpp);
+                    }
+                }
+                maskb <<= 1;
+                datab <<= 1;
+                dst += dstbpp;
+            }
+            dst += dstskip;
+        }
+    }
 }
 
 /* This handles the ugly work of converting the saved cursor background from
@@ -556,196 +575,226 @@
    This is only necessary when blitting from a shadow surface of a different
    pixel format than the video surface, and using a software rendered cursor.
 */
-static void SDL_ConvertCursorSave(SDL_Surface *screen, int w, int h)
+static void
+SDL_ConvertCursorSave (SDL_Surface * screen, int w, int h)
 {
-	SDL_BlitInfo info;
-	SDL_loblit RunBlit;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+    SDL_BlitInfo info;
+    SDL_loblit RunBlit;
 
-	/* Make sure we can steal the blit mapping */
-	if ( screen->map->dst != SDL_VideoSurface ) {
-		return;
-	}
+    /* Make sure we can steal the blit mapping */
+    if (screen->map->dst != SDL_VideoSurface) {
+        return;
+    }
 
-	/* Set up the blit information */
-	info.s_pixels = SDL_cursor->save[1];
-	info.s_width = w;
-	info.s_height = h;
-	info.s_skip = 0;
-	info.d_pixels = SDL_cursor->save[0];
-	info.d_width = w;
-	info.d_height = h;
-	info.d_skip = 0;
-	info.aux_data = screen->map->sw_data->aux_data;
-	info.src = screen->format;
-	info.table = screen->map->table;
-	info.dst = SDL_VideoSurface->format;
-	RunBlit = screen->map->sw_data->blit;
+    /* Set up the blit information */
+    info.s_pixels = SDL_cursor->save[1];
+    info.s_width = w;
+    info.s_height = h;
+    info.s_skip = 0;
+    info.d_pixels = SDL_cursor->save[0];
+    info.d_width = w;
+    info.d_height = h;
+    info.d_skip = 0;
+    info.aux_data = screen->map->sw_data->aux_data;
+    info.src = screen->format;
+    info.table = screen->map->table;
+    info.dst = SDL_VideoSurface->format;
+    RunBlit = screen->map->sw_data->blit;
 
-	/* Run the actual software blit */
-	RunBlit(&info);
+    /* Run the actual software blit */
+    RunBlit (&info);
 }
 
-void SDL_DrawCursorNoLock(SDL_Surface *screen)
+void
+SDL_DrawCursorNoLock (SDL_Surface * screen)
 {
-	SDL_Rect area;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+    SDL_Rect area;
 
-	/* Get the mouse rectangle, clipped to the screen */
-	SDL_MouseRect(&area);
-	if ( (area.w == 0) || (area.h == 0) ) {
-		return;
-	}
+    /* Get the mouse rectangle, clipped to the screen */
+    SDL_MouseRect (&area);
+    if ((area.w == 0) || (area.h == 0)) {
+        return;
+    }
 
-	/* Copy mouse background */
-	{ int w, h, screenbpp;
-	  Uint8 *src, *dst;
+    /* Copy mouse background */
+    {
+        int w, h, screenbpp;
+        Uint8 *src, *dst;
 
-	  /* Set up the copy pointers */
-	  screenbpp = screen->format->BytesPerPixel;
-	  if ( (screen == SDL_VideoSurface) ||
-	          FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) {
-		dst = SDL_cursor->save[0];
-	  } else {
-		dst = SDL_cursor->save[1];
-	  }
-	  src = (Uint8 *)screen->pixels + area.y * screen->pitch +
-                                          area.x * screenbpp;
+        /* Set up the copy pointers */
+        screenbpp = screen->format->BytesPerPixel;
+        if ((screen == SDL_VideoSurface) ||
+            FORMAT_EQUAL (screen->format, SDL_VideoSurface->format)) {
+            dst = SDL_cursor->save[0];
+        } else {
+            dst = SDL_cursor->save[1];
+        }
+        src = (Uint8 *) screen->pixels + area.y * screen->pitch +
+            area.x * screenbpp;
 
-	  /* Perform the copy */
-	  w = area.w*screenbpp;
-	  h = area.h;
-	  while ( h-- ) {
-		  SDL_memcpy(dst, src, w);
-		  dst += w;
-		  src += screen->pitch;
-	  }
-	}
+        /* Perform the copy */
+        w = area.w * screenbpp;
+        h = area.h;
+        while (h--) {
+            SDL_memcpy (dst, src, w);
+            dst += w;
+            src += screen->pitch;
+        }
+    }
 
-	/* Draw the mouse cursor */
-	area.x -= SDL_cursor->area.x;
-	area.y -= SDL_cursor->area.y;
-	if ( (area.x == 0) && (area.w == SDL_cursor->area.w) ) {
-		SDL_DrawCursorFast(screen, &area);
-	} else {
-		SDL_DrawCursorSlow(screen, &area);
-	}
+    /* Draw the mouse cursor */
+    area.x -= SDL_cursor->area.x;
+    area.y -= SDL_cursor->area.y;
+    if ((area.x == 0) && (area.w == SDL_cursor->area.w)) {
+        SDL_DrawCursorFast (screen, &area);
+    } else {
+        SDL_DrawCursorSlow (screen, &area);
+    }
 }
 
-void SDL_DrawCursor(SDL_Surface *screen)
+void
+SDL_DrawCursor (SDL_Surface * screen)
 {
-	/* Lock the screen if necessary */
-	if ( screen == NULL ) {
-		return;
-	}
-	if ( SDL_MUSTLOCK(screen) ) {
-		if ( SDL_LockSurface(screen) < 0 ) {
-			return;
-		}
-	}
+    /* Lock the screen if necessary */
+    if (screen == NULL) {
+        return;
+    }
+    if (SDL_MUSTLOCK (screen)) {
+        if (SDL_LockSurface (screen) < 0) {
+            return;
+        }
+    }
 
-	SDL_DrawCursorNoLock(screen);
+    SDL_DrawCursorNoLock (screen);
 
-	/* Unlock the screen and update if necessary */
-	if ( SDL_MUSTLOCK(screen) ) {
-		SDL_UnlockSurface(screen);
-	}
-	if ( (screen == SDL_VideoSurface) &&
-	     ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) {
-		SDL_VideoDevice *video = current_video;
-		SDL_VideoDevice *this  = current_video;
-		SDL_Rect area;
+    /* Unlock the screen and update if necessary */
+    if (SDL_MUSTLOCK (screen)) {
+        SDL_UnlockSurface (screen);
+    }
+    if ((screen->flags & SDL_SCREEN_SURFACE) &&
+        !(screen->flags & SDL_HWSURFACE)) {
+        SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+        SDL_Window *window;
+        SDL_Rect area;
 
-		SDL_MouseRect(&area);
+        window = SDL_GetWindowFromSurface (screen);
+        if (!window) {
+            return;
+        }
 
-		/* This can be called before a video mode is set */
-		if ( video->UpdateRects ) {
-			video->UpdateRects(this, 1, &area);
-		}
-	}
+        SDL_MouseRect (&area);
+
+        if (_this->UpdateWindowSurface) {
+            _this->UpdateWindowSurface (_this, window, 1, &area);
+        }
+    }
 }
 
-void SDL_EraseCursorNoLock(SDL_Surface *screen)
+void
+SDL_EraseCursorNoLock (SDL_Surface * screen)
 {
-	SDL_Rect area;
+    SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+    SDL_Window *window;
+    SDL_Rect area;
 
-	/* Get the mouse rectangle, clipped to the screen */
-	SDL_MouseRect(&area);
-	if ( (area.w == 0) || (area.h == 0) ) {
-		return;
-	}
+    /* Get the window associated with the surface */
+    window = SDL_GetWindowFromSurface (screen);
+    if (!window || !window->surface) {
+        return;
+    }
 
-	/* Copy mouse background */
-	{ int w, h, screenbpp;
-	  Uint8 *src, *dst;
+    /* Get the mouse rectangle, clipped to the screen */
+    SDL_MouseRect (&area);
+    if ((area.w == 0) || (area.h == 0)) {
+        return;
+    }
+
+    /* Copy mouse background */
+    {
+        int w, h, screenbpp;
+        Uint8 *src, *dst;
 
-	  /* Set up the copy pointers */
-	  screenbpp = screen->format->BytesPerPixel;
-	  if ( (screen == SDL_VideoSurface) ||
-	          FORMAT_EQUAL(screen->format, SDL_VideoSurface->format) ) {
-		src = SDL_cursor->save[0];
-	  } else {
-		src = SDL_cursor->save[1];
-	  }
-	  dst = (Uint8 *)screen->pixels + area.y * screen->pitch +
-                                          area.x * screenbpp;
+        /* Set up the copy pointers */
+        screenbpp = screen->format->BytesPerPixel;
+        if ((screen->flags & SDL_SCREEN_SURFACE) ||
+            FORMAT_EQUAL (screen->format, window->surface->format)) {
+            src = SDL_cursor->save[0];
+        } else {
+            src = SDL_cursor->save[1];
+        }
+        dst = (Uint8 *) screen->pixels + area.y * screen->pitch +
+            area.x * screenbpp;
 
-	  /* Perform the copy */
-	  w = area.w*screenbpp;
-	  h = area.h;
-	  while ( h-- ) {
-		  SDL_memcpy(dst, src, w);
-		  src += w;
-		  dst += screen->pitch;
-	  }
+        /* Perform the copy */
+        w = area.w * screenbpp;
+        h = area.h;
+        while (h--) {
+            SDL_memcpy (dst, src, w);
+            src += w;
+            dst += screen->pitch;
+        }
 
-	  /* Perform pixel conversion on cursor background */
-	  if ( src > SDL_cursor->save[1] ) {
-		SDL_ConvertCursorSave(screen, area.w, area.h);
-	  }
-	}
+        /* Perform pixel conversion on cursor background */
+        if (src > SDL_cursor->save[1]) {
+            SDL_ConvertCursorSave (screen, area.w, area.h);
+        }
+    }
 }
 
-void SDL_EraseCursor(SDL_Surface *screen)
+void
+SDL_EraseCursor (SDL_Surface * screen)
 {
-	/* Lock the screen if necessary */
-	if ( screen == NULL ) {
-		return;
-	}
-	if ( SDL_MUSTLOCK(screen) ) {
-		if ( SDL_LockSurface(screen) < 0 ) {
-			return;
-		}
-	}
+    /* Lock the screen if necessary */
+    if (screen == NULL) {
+        return;
+    }
+    if (SDL_MUSTLOCK (screen)) {
+        if (SDL_LockSurface (screen) < 0) {
+            return;
+        }
+    }
 
-	SDL_EraseCursorNoLock(screen);
+    SDL_EraseCursorNoLock (screen);
 
-	/* Unlock the screen and update if necessary */
-	if ( SDL_MUSTLOCK(screen) ) {
-		SDL_UnlockSurface(screen);
-	}
-	if ( (screen == SDL_VideoSurface) &&
-	     ((screen->flags & SDL_HWSURFACE) != SDL_HWSURFACE) ) {
-		SDL_VideoDevice *video = current_video;
-		SDL_VideoDevice *this  = current_video;
-		SDL_Rect area;
+    /* Unlock the screen and update if necessary */
+    if (SDL_MUSTLOCK (screen)) {
+        SDL_UnlockSurface (screen);
+    }
+    if ((screen->flags & SDL_SCREEN_SURFACE) &&
+        !(screen->flags & SDL_HWSURFACE)) {
+        SDL_VideoDevice *_this = SDL_GetVideoDevice ();
+        SDL_Window *window;
+        SDL_Rect area;
 
-		SDL_MouseRect(&area);
-		if ( video->UpdateRects ) {
-			video->UpdateRects(this, 1, &area);
-		}
-	}
+        window = SDL_GetWindowFromSurface (screen);
+        if (!window) {
+            return;
+        }
+
+        SDL_MouseRect (&area);
+
+        if (_this->UpdateWindowSurface) {
+            _this->UpdateWindowSurface (_this, window, 1, &area);
+        }
+    }
 }
 
 /* Reset the cursor on video mode change
    FIXME:  Keep track of all cursors, and reset them all.
  */
-void SDL_ResetCursor(void)
+void
+SDL_ResetCursor (void)
 {
-	int savelen;
+    int savelen;
 
-	if ( SDL_cursor ) {
-		savelen = SDL_cursor->area.w*4*SDL_cursor->area.h;
-		SDL_cursor->area.x = 0;
-		SDL_cursor->area.y = 0;
-		SDL_memset(SDL_cursor->save[0], 0, savelen);
-	}
+    if (SDL_cursor) {
+        savelen = SDL_cursor->area.w * 4 * SDL_cursor->area.h;
+        SDL_cursor->area.x = 0;
+        SDL_cursor->area.y = 0;
+        SDL_memset (SDL_cursor->save[0], 0, savelen);
+    }
 }
+
+/* vi: set ts=4 sw=4 expandtab: */