Mercurial > sdl-ios-xcode
view src/video/x11/SDL_x11mouse.c @ 641:df178851293b
Date: 28 Jun 2003 22:42:52 +0100
From: Alan Swanson
Subject: Re: [SDL] New XFree 4.3 Video Mode Patch
I have a wee amendment that moves the qsort in set_best_resolution
to only occur after failing to find an exact match only. This would
make absolutely sure we get a user set mode.
While I've never had any problems for my normal resolutions (1280x1024,
1024x768, 800x600 & 640,480) while closely examining the output from
qsort I've noticed it doesn't seem to sort the modes fully. These is
one definite wrong at 1152x768 and a few that just look wrong to me.
From a program (attached) I made to examine this more easily. X has
sorted its mode list using the same method as ours (plus frequency),
and our user modes get inserted without any other movement.
On the patch I've made I've also changed cmpmodes to sort on vertical
resolution and then horizontal. Ie vertical is now most significant
bit.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sat, 28 Jun 2003 21:52:26 +0000 |
parents | 5c74ac147358 |
children | b8d311d90021 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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@libsdl.org */ #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 ) { SDL_PrivateMouseMotion(0, 0, x, y); } else if ( mouse_relative) { /* RJR: March 28, 2000 leave physical cursor at center of screen if mouse hidden and grabbed */ 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) { char *env_override; int enable_relative = 1; /* Allow the user to override the relative mouse mode. They almost never want to do this, as it seriously affects applications that rely on continuous relative mouse motion. */ env_override = getenv("SDL_MOUSE_RELATIVE"); if ( env_override ) { enable_relative = atoi(env_override); } /* If the mouse is hidden and input is grabbed, we use relative mode */ if ( enable_relative && !(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(); }