Mercurial > sdl-ios-xcode
view src/video/wincommon/SDL_sysmouse.c @ 934:af585d6efec8
Date: Thu, 17 Jun 2004 11:38:51 -0700 (PDT)
From: Eric Wing <ewing2121@yahoo.com>
Subject: New OS X patch (was Re: [SDL] Bug with inverted mouse coordinates in
I have a new patch for OS X I would like to submit.
First, it appears no further action has been taken on
my fix from Apple on the OpenGL windowed mode mouse
inversion problem. The fix would reunify the code, and
no longer require case checking for which version of
the OS you are running. This is probably a good fix
because the behavior with the old code could change
again with future versions of the OS, so those fixes
are included in this new patch.
But in addition, when I was at Apple, I asked them
about the ability to distinguish between the modifier
keys on the left and right sides of the keyboard (e.g.
Left Shift, Right Shift, Left/Right Alt, L/R Cmd, L/R
Ctrl). They told me that starting with Panther, the OS
began supporting this feature. This has always been a
source of annoyance for me when bringing a program
that comes from Windows or Linux to OS X when the
keybindings happened to need distinguishable left-side
and right-side keys. So the rest of the patch I am
submitting contains new code to support this feature
on Panther (and presumably later versions of the OS).
So after removing the OS version checks for the mouse
inversion problem, I reused the OS version checks to
activate the Left/Right detection of modifier keys. If
you are running Panther (or above), the new code will
attempt to distinguish between sides. For the older
OS's, the code path reverts to the original code.
I've tested with Panther on a G4 Cube, G5 dual
processor, and Powerbook Rev C. The Cube and G5
keyboards demonstrated the ability to distinguish
between sides. The Powerbook seems to only have
left-side keys, but the patch was still able to handle
it by producing the same results as before the patch.
I also wanted to test a non-Apple keyboard.
Unfortunately, I don't have any PC USB keyboards.
However, I was able to borrow a Sun Microsystems USB
keyboard, so I tried that out on the G5, and I got the
correct behavior for left and right sides. I'm
expecting that if it worked with a Sun keyboard, most
other keyboards should work with no problems.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 20 Aug 2004 22:35:23 +0000 |
parents | 5c74ac147358 |
children | 86d0d01290ea |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997, 1998, 1999 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 <windows.h> #include "SDL_error.h" #include "SDL_mouse.h" #include "SDL_sysmouse_c.h" #include "SDL_events_c.h" #include "SDL_cursor_c.h" #include "SDL_lowvideo.h" #ifdef _WIN32_WCE #define USE_STATIC_CURSOR #endif HCURSOR SDL_hcursor = NULL; /* Exported for SDL_eventloop.c */ /* The implementation dependent data for the window manager cursor */ /* For some reason when creating a windows cursor, the ands and xors memory is not copied, so we need to keep track of it and free it when we are done with the cursor. If we free the memory prematurely, the app crashes. :-} */ struct WMcursor { HCURSOR curs; #ifndef USE_STATIC_CURSOR Uint8 *ands; Uint8 *xors; #endif }; /* Convert bits to padded bytes */ #define PAD_BITS(bits) ((bits+7)/8) #ifdef CURSOR_DEBUG static void PrintBITMAP(FILE *out, char *bits, int w, int h) { int i; unsigned char ch; while ( h-- > 0 ) { for ( i=0; i<w; ++i ) { if ( (i%8) == 0 ) ch = *bits++; if ( ch&0x80 ) fprintf(out, "X"); else fprintf(out, " "); ch <<= 1; } fprintf(out, "\n"); } } #endif #ifndef USE_STATIC_CURSOR /* Local functions to convert the SDL cursor mask into Windows format */ static void memnot(Uint8 *dst, Uint8 *src, int len) { while ( len-- > 0 ) *dst++ = ~*src++; } static void memxor(Uint8 *dst, Uint8 *src1, Uint8 *src2, int len) { while ( len-- > 0 ) *dst++ = (*src1++)^(*src2++); } #endif /* !USE_STATIC_CURSOR */ void WIN_FreeWMCursor(_THIS, WMcursor *cursor) { #ifndef USE_STATIC_CURSOR if ( cursor->curs == GetCursor() ) SetCursor(NULL); if ( cursor->curs != NULL ) DestroyCursor(cursor->curs); if ( cursor->ands != NULL ) free(cursor->ands); if ( cursor->xors != NULL ) free(cursor->xors); #endif /* !USE_STATIC_CURSOR */ free(cursor); } WMcursor *WIN_CreateWMCursor(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y) { #ifdef USE_STATIC_CURSOR WMcursor *cursor; /* Allocate the cursor */ cursor = (WMcursor *)malloc(sizeof(*cursor)); if ( cursor ) { cursor->curs = LoadCursor(NULL, IDC_ARROW); } return(cursor); #else WMcursor *cursor; int allowed_x; int allowed_y; int run, pad, i; Uint8 *aptr, *xptr; /* Check to make sure the cursor size is okay */ allowed_x = GetSystemMetrics(SM_CXCURSOR); allowed_y = GetSystemMetrics(SM_CYCURSOR); if ( (w > allowed_x) || (h > allowed_y) ) { SDL_SetError("Only cursors of dimension (%dx%d) are allowed", allowed_x, allowed_y); return(NULL); } /* Allocate the cursor */ cursor = (WMcursor *)malloc(sizeof(*cursor)); if ( cursor == NULL ) { SDL_SetError("Out of memory"); return(NULL); } cursor->curs = NULL; cursor->ands = NULL; cursor->xors = NULL; /* Pad out to the normal cursor size */ run = PAD_BITS(w); pad = PAD_BITS(allowed_x)-run; aptr = cursor->ands = (Uint8 *)malloc((run+pad)*allowed_y); xptr = cursor->xors = (Uint8 *)malloc((run+pad)*allowed_y); if ( (aptr == NULL) || (xptr == NULL) ) { WIN_FreeWMCursor(NULL, cursor); SDL_OutOfMemory(); return(NULL); } for ( i=0; i<h; ++i ) { memxor(xptr, data, mask, run); xptr += run; data += run; memnot(aptr, mask, run); mask += run; aptr += run; memset(xptr, 0, pad); xptr += pad; memset(aptr, ~0, pad); aptr += pad; } pad += run; for ( ; i<allowed_y; ++i ) { memset(xptr, 0, pad); xptr += pad; memset(aptr, ~0, pad); aptr += pad; } /* Create the cursor */ cursor->curs = CreateCursor( (HINSTANCE)GetWindowLong(SDL_Window, GWL_HINSTANCE), hot_x, hot_y, allowed_x, allowed_y, cursor->ands, cursor->xors); if ( cursor->curs == NULL ) { WIN_FreeWMCursor(NULL, cursor); SDL_SetError("Windows couldn't create the requested cursor"); return(NULL); } return(cursor); #endif /* USE_STATIC_CURSOR */ } int WIN_ShowWMCursor(_THIS, WMcursor *cursor) { POINT mouse_pos; /* The fullscreen cursor must be done in software with DirectInput */ if ( !this->screen || DDRAW_FULLSCREEN() ) { return(0); } /* Set the window cursor to our cursor, if applicable */ if ( cursor != NULL ) { SDL_hcursor = cursor->curs; } else { SDL_hcursor = NULL; } GetCursorPos(&mouse_pos); if ( PtInRect(&SDL_bounds, mouse_pos) ) { SetCursor(SDL_hcursor); } return(1); } void WIN_WarpWMCursor(_THIS, Uint16 x, Uint16 y) { if ( DDRAW_FULLSCREEN() ) { 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 { POINT pt; pt.x = x; pt.y = y; ClientToScreen(SDL_Window, &pt); SetCursorPos(pt.x, pt.y); } } /* Update the current mouse state and position */ void WIN_UpdateMouse(_THIS) { RECT rect; POINT pt; if ( ! DDRAW_FULLSCREEN() ) { GetClientRect(SDL_Window, &rect); GetCursorPos(&pt); MapWindowPoints(NULL, SDL_Window, &pt, 1); if (PtInRect(&rect, pt) && (WindowFromPoint(pt) == SDL_Window)){ SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS); SDL_PrivateMouseMotion(0,0, (Sint16)pt.x, (Sint16)pt.y); } else { SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS); } } } /* Check to see if we need to enter or leave mouse relative mode */ void WIN_CheckMouseMode(_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) ) { mouse_relative = 1; } else { mouse_relative = 0; } }