author | Sam Lantinga <slouken@lokigames.com> |
Sat, 23 Jun 2001 22:00:59 +0000 | |
changeset 79 | ffadd05de74d |
parent 78 | e9582f471c02 |
child 80 | 8806bc1eb80e |
permissions | -rw-r--r-- |
0 | 1 |
/* |
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SDL - Simple DirectMedia Layer |
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Copyright (C) 1997, 1998, 1999, 2000, 2001 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@devolution.com |
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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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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <X11/Xlib.h> |
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#include <X11/Xutil.h> |
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#include "SDL_error.h" |
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#include "SDL_mouse.h" |
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#include "SDL_events_c.h" |
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#include "SDL_cursor_c.h" |
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#include "SDL_x11dga_c.h" |
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#include "SDL_x11mouse_c.h" |
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/* The implementation dependent data for the window manager cursor */ |
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struct WMcursor { |
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Cursor x_cursor; |
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}; |
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void X11_FreeWMCursor(_THIS, WMcursor *cursor) |
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{ |
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if ( SDL_Display != NULL ) { |
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SDL_Lock_EventThread(); |
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XFreeCursor(SDL_Display, cursor->x_cursor); |
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XSync(SDL_Display, False); |
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SDL_Unlock_EventThread(); |
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} |
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free(cursor); |
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} |
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WMcursor *X11_CreateWMCursor(_THIS, |
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Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) |
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{ |
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WMcursor *cursor; |
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XGCValues GCvalues; |
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GC GCcursor; |
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XImage *data_image, *mask_image; |
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Pixmap data_pixmap, mask_pixmap; |
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int clen, i; |
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char *x_data, *x_mask; |
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static XColor black = { 0, 0, 0, 0 }; |
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static XColor white = { 0xffff, 0xffff, 0xffff, 0xffff }; |
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/* Allocate the cursor memory */ |
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cursor = (WMcursor *)malloc(sizeof(WMcursor)); |
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if ( cursor == NULL ) { |
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SDL_OutOfMemory(); |
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return(NULL); |
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} |
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/* Mix the mask and the data */ |
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clen = (w/8)*h; |
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x_data = (char *)malloc(clen); |
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if ( x_data == NULL ) { |
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free(cursor); |
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SDL_OutOfMemory(); |
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return(NULL); |
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} |
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x_mask = (char *)malloc(clen); |
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if ( x_mask == NULL ) { |
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free(cursor); |
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free(x_data); |
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SDL_OutOfMemory(); |
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return(NULL); |
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} |
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for ( i=0; i<clen; ++i ) { |
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/* The mask is OR'd with the data to turn inverted color |
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pixels black since inverted color cursors aren't supported |
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under X11. |
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*/ |
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x_mask[i] = data[i] | mask[i]; |
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x_data[i] = data[i]; |
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} |
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/* Prevent the event thread from running while we use the X server */ |
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SDL_Lock_EventThread(); |
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/* Create the data image */ |
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data_image = XCreateImage(SDL_Display, |
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DefaultVisual(SDL_Display, SDL_Screen), |
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1, XYBitmap, 0, x_data, w, h, 8, w/8); |
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data_image->byte_order = MSBFirst; |
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data_image->bitmap_bit_order = MSBFirst; |
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data_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
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/* Create the data mask */ |
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mask_image = XCreateImage(SDL_Display, |
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DefaultVisual(SDL_Display, SDL_Screen), |
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1, XYBitmap, 0, x_mask, w, h, 8, w/8); |
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mask_image->byte_order = MSBFirst; |
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mask_image->bitmap_bit_order = MSBFirst; |
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mask_pixmap = XCreatePixmap(SDL_Display, SDL_Root, w, h, 1); |
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/* Create the graphics context */ |
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GCvalues.function = GXcopy; |
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GCvalues.foreground = ~0; |
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GCvalues.background = 0; |
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GCvalues.plane_mask = AllPlanes; |
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GCcursor = XCreateGC(SDL_Display, data_pixmap, |
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(GCFunction|GCForeground|GCBackground|GCPlaneMask), |
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&GCvalues); |
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/* Blit the images to the pixmaps */ |
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XPutImage(SDL_Display, data_pixmap, GCcursor, data_image, |
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0, 0, 0, 0, w, h); |
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XPutImage(SDL_Display, mask_pixmap, GCcursor, mask_image, |
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0, 0, 0, 0, w, h); |
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XFreeGC(SDL_Display, GCcursor); |
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/* These free the x_data and x_mask memory pointers */ |
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XDestroyImage(data_image); |
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XDestroyImage(mask_image); |
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/* Create the cursor */ |
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cursor->x_cursor = XCreatePixmapCursor(SDL_Display, data_pixmap, |
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mask_pixmap, &black, &white, hot_x, hot_y); |
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/* Release the event thread */ |
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XSync(SDL_Display, False); |
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SDL_Unlock_EventThread(); |
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return(cursor); |
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} |
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int X11_ShowWMCursor(_THIS, WMcursor *cursor) |
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{ |
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/* Don't do anything if the display is gone */ |
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if ( SDL_Display == NULL ) { |
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return(0); |
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} |
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/* Set the X11 cursor cursor, or blank if cursor is NULL */ |
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if ( SDL_Window ) { |
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SDL_Lock_EventThread(); |
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if ( cursor == NULL ) { |
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if ( SDL_BlankCursor != NULL ) { |
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XDefineCursor(SDL_Display, SDL_Window, |
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SDL_BlankCursor->x_cursor); |
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} |
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} else { |
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XDefineCursor(SDL_Display, SDL_Window, cursor->x_cursor); |
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} |
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XSync(SDL_Display, False); |
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SDL_Unlock_EventThread(); |
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} |
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return(1); |
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} |
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void X11_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
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{ |
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if ( using_dga & DGA_MOUSE ) { |
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x += (this->screen->offset % this->screen->pitch) / |
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this->screen->format->BytesPerPixel; |
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y += (this->screen->offset / this->screen->pitch); |
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SDL_PrivateMouseMotion(0, 0, x, y); |
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} else { |
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SDL_Lock_EventThread(); |
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XWarpPointer(SDL_Display, None, SDL_Window, 0, 0, 0, 0, x, y); |
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XSync(SDL_Display, False); |
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SDL_Unlock_EventThread(); |
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} |
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} |
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/* Sets the mouse acceleration from a string of the form: |
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2/1/0 |
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The first number is the numerator, followed by the acceleration |
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denumenator and threshold. |
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*/ |
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static void SetMouseAccel(_THIS, const char *accel_param) |
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{ |
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int i; |
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int accel_value[3]; |
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char *mouse_param, *mouse_param_buf, *pin; |
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mouse_param_buf = (char *)malloc(strlen(accel_param)+1); |
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if ( ! mouse_param_buf ) { |
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return; |
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} |
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strcpy(mouse_param_buf, accel_param); |
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mouse_param = mouse_param_buf; |
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for ( i=0; (i < 3) && mouse_param; ++i ) { |
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pin = strchr(mouse_param, '/'); |
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if ( pin ) { |
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*pin = '\0'; |
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} |
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accel_value[i] = atoi(mouse_param); |
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if ( pin ) { |
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mouse_param = pin+1; |
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} else { |
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mouse_param = NULL; |
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} |
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} |
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if ( mouse_param_buf ) { |
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XChangePointerControl(SDL_Display, True, True, |
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accel_value[0], accel_value[1], accel_value[2]); |
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free(mouse_param_buf); |
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} |
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} |
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/* Check to see if we need to enter or leave mouse relative mode */ |
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void X11_CheckMouseModeNoLock(_THIS) |
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{ |
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ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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char *env_override; |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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int enable_relative = 1; |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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|
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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/* Allow the user to override the relative mouse mode. |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
|
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They almost never want to do this, as it seriously affects |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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applications that rely on continuous relative mouse motion. |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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*/ |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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env_override = getenv("SDL_MOUSE_NORELATIVE"); |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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if ( env_override ) { |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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enable_relative = atoi(env_override); |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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} |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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/* If the mouse is hidden and input is grabbed, we use relative mode */ |
79
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
|
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if ( enable_relative && |
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
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!(SDL_cursorstate & CURSOR_VISIBLE) && |
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(this->input_grab != SDL_GRAB_OFF) && |
79
ffadd05de74d
Allow the user to override the relative mouse mode.
Sam Lantinga <slouken@lokigames.com>
parents:
78
diff
changeset
|
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(SDL_GetAppState() & SDL_APPACTIVE) ) { |
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if ( ! mouse_relative ) { |
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X11_EnableDGAMouse(this); |
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if ( ! (using_dga & DGA_MOUSE) ) { |
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char *xmouse_accel; |
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SDL_GetMouseState(&mouse_last.x, &mouse_last.y); |
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/* Use as raw mouse mickeys as possible */ |
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XGetPointerControl(SDL_Display, |
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&mouse_accel.numerator, |
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&mouse_accel.denominator, |
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&mouse_accel.threshold); |
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xmouse_accel=getenv("SDL_VIDEO_X11_MOUSEACCEL"); |
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if ( xmouse_accel ) { |
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SetMouseAccel(this, xmouse_accel); |
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} |
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} |
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mouse_relative = 1; |
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} |
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} else { |
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if ( mouse_relative ) { |
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if ( using_dga & DGA_MOUSE ) { |
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X11_DisableDGAMouse(this); |
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} else { |
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XChangePointerControl(SDL_Display, True, True, |
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mouse_accel.numerator, |
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mouse_accel.denominator, |
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mouse_accel.threshold); |
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} |
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mouse_relative = 0; |
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} |
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} |
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} |
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void X11_CheckMouseMode(_THIS) |
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{ |
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SDL_Lock_EventThread(); |
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X11_CheckMouseModeNoLock(this); |
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SDL_Unlock_EventThread(); |
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} |