--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/x11/SDL_x11mouse.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,273 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+
+#include "SDL_error.h"
+#include "SDL_mouse.h"
+#include "SDL_events_c.h"
+#include "SDL_cursor_c.h"
+#include "SDL_x11dga_c.h"
+#include "SDL_x11mouse_c.h"
+
+
+/* The implementation dependent data for the window manager cursor */
+struct WMcursor {
+	Cursor x_cursor;
+};
+
+
+void X11_FreeWMCursor(_THIS, WMcursor *cursor)
+{
+	if ( SDL_Display != NULL ) {
+		SDL_Lock_EventThread();
+		XFreeCursor(SDL_Display, cursor->x_cursor);
+		XSync(SDL_Display, False);
+		SDL_Unlock_EventThread();
+	}
+	free(cursor);
+}
+
+WMcursor *X11_CreateWMCursor(_THIS,
+		Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
+{
+	WMcursor *cursor;
+	XGCValues GCvalues;
+	GC        GCcursor;
+	XImage *data_image, *mask_image;
+	Pixmap  data_pixmap, mask_pixmap;
+	int       clen, i;
+	char     *x_data, *x_mask;
+	static XColor black = {  0,  0,  0,  0 };
+	static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff };
+
+	/* Allocate the cursor memory */
+	cursor = (WMcursor *)malloc(sizeof(WMcursor));
+	if ( cursor == NULL ) {
+		SDL_OutOfMemory();
+		return(NULL);
+	}
+
+	/* Mix the mask and the data */
+	clen = (w/8)*h;
+	x_data = (char *)malloc(clen);
+	if ( x_data == NULL ) {
+		free(cursor);
+		SDL_OutOfMemory();
+		return(NULL);
+	}
+	x_mask = (char *)malloc(clen);
+	if ( x_mask == NULL ) {
+		free(cursor);
+		free(x_data);
+		SDL_OutOfMemory();
+		return(NULL);
+	}
+	for ( i=0; i<clen; ++i ) {
+		/* The mask is OR'd with the data to turn inverted color
+		   pixels black since inverted color cursors aren't supported
+		   under X11.
+		 */
+		x_mask[i] = data[i] | mask[i];
+		x_data[i] = data[i];
+	}
+
+	/* Prevent the event thread from running while we use the X server */
+	SDL_Lock_EventThread();
+
+	/* Create the data image */
+	data_image = XCreateImage(SDL_Display, 
+			DefaultVisual(SDL_Display, SDL_Screen),
+					1, XYBitmap, 0, x_data, w, h, 8, w/8);
+	data_image->byte_order = MSBFirst;
+	data_image->bitmap_bit_order = MSBFirst;
+	data_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1);
+
+	/* Create the data mask */
+	mask_image = XCreateImage(SDL_Display, 
+			DefaultVisual(SDL_Display, SDL_Screen),
+					1, XYBitmap, 0, x_mask, w, h, 8, w/8);
+	mask_image->byte_order = MSBFirst;
+	mask_image->bitmap_bit_order = MSBFirst;
+	mask_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1);
+
+	/* Create the graphics context */
+	GCvalues.function = GXcopy;
+	GCvalues.foreground = ~0;
+	GCvalues.background =  0;
+	GCvalues.plane_mask = AllPlanes;
+	GCcursor = XCreateGC(SDL_Display, data_pixmap,
+			(GCFunction|GCForeground|GCBackground|GCPlaneMask),
+								&GCvalues);
+
+	/* Blit the images to the pixmaps */
+	XPutImage(SDL_Display, data_pixmap, GCcursor, data_image,
+							0, 0, 0, 0, w, h);
+	XPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image,
+							0, 0, 0, 0, w, h);
+	XFreeGC(SDL_Display, GCcursor);
+	/* These free the x_data and x_mask memory pointers */
+	XDestroyImage(data_image);
+	XDestroyImage(mask_image);
+
+	/* Create the cursor */
+	cursor->x_cursor = XCreatePixmapCursor(SDL_Display, data_pixmap,
+				mask_pixmap, &black, &white, hot_x, hot_y);
+
+	/* Release the event thread */
+	XSync(SDL_Display, False);
+	SDL_Unlock_EventThread();
+
+	return(cursor);
+}
+
+int X11_ShowWMCursor(_THIS, WMcursor *cursor)
+{
+	/* Don't do anything if the display is gone */
+	if ( SDL_Display == NULL ) {
+		return(0);
+	}
+
+	/* Set the X11 cursor cursor, or blank if cursor is NULL */
+	if ( SDL_Window ) {
+		SDL_Lock_EventThread();
+		if ( cursor == NULL ) {
+			if ( SDL_BlankCursor != NULL ) {
+				XDefineCursor(SDL_Display, SDL_Window,
+					SDL_BlankCursor->x_cursor);
+			}
+		} else {
+			XDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor);
+		}
+		XSync(SDL_Display, False);
+		SDL_Unlock_EventThread();
+	}
+	return(1);
+}
+
+void X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
+{
+	if ( using_dga & DGA_MOUSE ) {
+		x += (this->screen->offset % this->screen->pitch) /
+		      this->screen->format->BytesPerPixel;
+		y += (this->screen->offset / this->screen->pitch);
+		SDL_PrivateMouseMotion(0, 0, x, y);
+	} else {
+		SDL_Lock_EventThread();
+		XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y);
+		XSync(SDL_Display, False);
+		SDL_Unlock_EventThread();
+	}
+}
+
+/* Sets the mouse acceleration from a string of the form:
+	2/1/0
+   The first number is the numerator, followed by the acceleration
+   denumenator and threshold.
+*/
+static void SetMouseAccel(_THIS, const char *accel_param)
+{
+	int i;
+	int accel_value[3];
+	char *mouse_param, *mouse_param_buf, *pin;
+
+	mouse_param_buf = (char *)malloc(strlen(accel_param)+1);
+	if ( ! mouse_param_buf ) {
+		return;
+	}
+	strcpy(mouse_param_buf, accel_param);
+	mouse_param = mouse_param_buf;
+
+	for ( i=0; (i < 3) && mouse_param; ++i ) {
+		pin = strchr(mouse_param, '/');
+		if ( pin ) {
+			*pin = '\0';
+		}
+		accel_value[i] = atoi(mouse_param);
+		if ( pin ) {
+			mouse_param = pin+1;
+		} else {
+			mouse_param = NULL;
+		}
+	}
+	if ( mouse_param_buf ) {
+		XChangePointerControl(SDL_Display, True, True,
+			accel_value[0], accel_value[1], accel_value[2]);
+		free(mouse_param_buf);
+	}
+}
+
+/* Check to see if we need to enter or leave mouse relative mode */
+void X11_CheckMouseModeNoLock(_THIS)
+{
+	/* If the mouse is hidden and input is grabbed, we use relative mode */
+	if ( !(SDL_cursorstate & CURSOR_VISIBLE) &&
+	     (this->input_grab != SDL_GRAB_OFF) &&
+             (SDL_GetAppState() & SDL_APPACTIVE) ) {
+		if ( ! mouse_relative ) {
+			X11_EnableDGAMouse(this);
+			if ( ! (using_dga & DGA_MOUSE) ) {
+				char *xmouse_accel;
+
+				SDL_GetMouseState(&mouse_last.x, &mouse_last.y);
+				/* Use as raw mouse mickeys as possible */
+				XGetPointerControl(SDL_Display,
+						&mouse_accel.numerator, 
+						&mouse_accel.denominator,
+						&mouse_accel.threshold);
+				xmouse_accel=getenv("SDL_VIDEO_X11_MOUSEACCEL");
+				if ( xmouse_accel ) {
+					SetMouseAccel(this, xmouse_accel);
+				}
+			}
+			mouse_relative = 1;
+		}
+	} else {
+		if ( mouse_relative ) {
+			if ( using_dga & DGA_MOUSE ) {
+				X11_DisableDGAMouse(this);
+			} else {
+				XChangePointerControl(SDL_Display, True, True,
+						mouse_accel.numerator, 
+						mouse_accel.denominator,
+						mouse_accel.threshold);
+			}
+			mouse_relative = 0;
+		}
+	}
+}
+void X11_CheckMouseMode(_THIS)
+{
+	SDL_Lock_EventThread();
+	X11_CheckMouseModeNoLock(this);
+	SDL_Unlock_EventThread();
+}