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Date: Thu, 17 Apr 2003 23:27:34 -0400 From: Darrell Walisser Subject: Yet another OS X cursor bug The synopsis: 1. Call SDL_ShowCursor(0); 2. Call SDL_SetVideoMode(); 3. Call SDL_GetEvent(); 3. Call SDL_ShowCursor(1); The result: Sometimes the cursor doesn't come back! Ack! Oddly enough, it does come back when mousing over the dock or clicking in the menu bar. But that's besides the point. The reason why this is happening is a flaw in the handling of activation/deactivation events. The short explanation is that the HideCursor() and ShowCursor() calls must be balanced, but if the cursor was initially hidden, HideCursor() was called again on the activate event - so now the next ShowCursor() fails (as does the next, and the next, for some reason). So, here's the patch. All it does is keep track of the HideCursor()/ShowCursor() calls so that they will always be balanced.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 20 Apr 2003 05:41:16 +0000
parents c94b390687d2
children bb5ace455586
line wrap: on
line source

/*
   Header definitions for the x86 routines for the HERMES library
   Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at)
   This source code is licensed under the GNU LGPL
  
   Please refer to the file COPYING.LIB contained in the distribution for
   licensing conditions
*/

#ifndef __HERMES_HEAD_X86__
#define __HERMES_HEAD_X86__


#ifdef X86_ASSEMBLER

/* If you can't stand IFDEFS, then close your eyes now, please :) */

/* Ok, we start with normal function definitions */
#ifdef __cplusplus
extern "C" {
#endif


void STACKCALL ConvertX86(HermesConverterInterface *);
void STACKCALL ClearX86_32(HermesClearInterface *);
void STACKCALL ClearX86_24(HermesClearInterface *);
void STACKCALL ClearX86_16(HermesClearInterface *);
void STACKCALL ClearX86_8(HermesClearInterface *);

int STACKCALL Hermes_X86_CPU();

void ConvertX86p32_32BGR888();
void ConvertX86p32_32RGBA888();
void ConvertX86p32_32BGRA888();
void ConvertX86p32_24RGB888();
void ConvertX86p32_24BGR888();
void ConvertX86p32_16RGB565();
void ConvertX86p32_16BGR565();
void ConvertX86p32_16RGB555();
void ConvertX86p32_16BGR555();
void ConvertX86p32_8RGB332();

void ConvertX86p16_32RGB888();
void ConvertX86p16_32BGR888();
void ConvertX86p16_32RGBA888();
void ConvertX86p16_32BGRA888();
void ConvertX86p16_24RGB888();
void ConvertX86p16_24BGR888();
void ConvertX86p16_16BGR565();
void ConvertX86p16_16RGB555();
void ConvertX86p16_16BGR555();
void ConvertX86p16_8RGB332();

void CopyX86p_4byte();
void CopyX86p_3byte();
void CopyX86p_2byte();
void CopyX86p_1byte();

void ConvertX86pI8_32();
void ConvertX86pI8_24();
void ConvertX86pI8_16();

extern int ConvertX86p16_32RGB888_LUT_X86[512];
extern int ConvertX86p16_32BGR888_LUT_X86[512];
extern int ConvertX86p16_32RGBA888_LUT_X86[512];
extern int ConvertX86p16_32BGRA888_LUT_X86[512];
  
#ifdef __cplusplus
}
#endif




/* Now fix up the ELF underscore problem */

#if defined(__ELF__) && defined(__GNUC__)
  #ifdef __cplusplus
  extern "C" {
  #endif

  int Hermes_X86_CPU() __attribute__ ((alias ("_Hermes_X86_CPU")));

  void ConvertX86(HermesConverterInterface *) __attribute__ ((alias ("_ConvertX86")));

#if 0
  void ClearX86_32(HermesClearInterface *) __attribute__ ((alias ("_ClearX86_32")));
  void ClearX86_24(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_24")));
  void ClearX86_16(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_16")));
  void ClearX86_8(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_8")));
#endif

  void ConvertX86p32_32BGR888() __attribute__ ((alias ("_ConvertX86p32_32BGR888")));
  void ConvertX86p32_32RGBA888() __attribute__ ((alias ("_ConvertX86p32_32RGBA888")));
  void ConvertX86p32_32BGRA888() __attribute__ ((alias ("_ConvertX86p32_32BGRA888")));
  void ConvertX86p32_24RGB888() __attribute__ ((alias ("_ConvertX86p32_24RGB888")));
  void ConvertX86p32_24BGR888() __attribute__ ((alias ("_ConvertX86p32_24BGR888")));
  void ConvertX86p32_16RGB565() __attribute__ ((alias ("_ConvertX86p32_16RGB565")));
  void ConvertX86p32_16BGR565() __attribute__ ((alias ("_ConvertX86p32_16BGR565")));
  void ConvertX86p32_16RGB555() __attribute__ ((alias ("_ConvertX86p32_16RGB555")));
  void ConvertX86p32_16BGR555() __attribute__ ((alias ("_ConvertX86p32_16BGR555")));
  void ConvertX86p32_8RGB332() __attribute__ ((alias ("_ConvertX86p32_8RGB332")));

#if 0
  void ConvertX86p16_32RGB888() __attribute__ ((alias ("_ConvertX86p16_32RGB888")));
  void ConvertX86p16_32BGR888() __attribute__ ((alias ("_ConvertX86p16_32BGR888")));
  void ConvertX86p16_32RGBA888() __attribute__ ((alias ("_ConvertX86p16_32RGBA888")));
  void ConvertX86p16_32BGRA888() __attribute__ ((alias ("_ConvertX86p16_32BGRA888")));
  void ConvertX86p16_24RGB888() __attribute__ ((alias ("_ConvertX86p16_24RGB888")));
  void ConvertX86p16_24BGR888() __attribute__ ((alias ("_ConvertX86p16_24BGR888")));
#endif
  void ConvertX86p16_16BGR565() __attribute__ ((alias ("_ConvertX86p16_16BGR565")));
  void ConvertX86p16_16RGB555() __attribute__ ((alias ("_ConvertX86p16_16RGB555")));
  void ConvertX86p16_16BGR555() __attribute__ ((alias ("_ConvertX86p16_16BGR555")));
  void ConvertX86p16_8RGB332() __attribute__ ((alias ("_ConvertX86p16_8RGB332")));

#if 0
  void CopyX86p_4byte() __attribute__ ((alias ("_CopyX86p_4byte")));
  void CopyX86p_3byte() __attribute__ ((alias ("_CopyX86p_3byte")));
  void CopyX86p_2byte() __attribute__ ((alias ("_CopyX86p_2byte")));
  void CopyX86p_1byte() __attribute__ ((alias ("_CopyX86p_1byte")));

  void ConvertX86pI8_32() __attribute__ ((alias ("_ConvertX86pI8_32")));
  void ConvertX86pI8_24() __attribute__ ((alias ("_ConvertX86pI8_24")));
  void ConvertX86pI8_16() __attribute__ ((alias ("_ConvertX86pI8_16")));

  extern int ConvertX86p16_32RGB888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32RGB888_LUT_X86")));
  extern int ConvertX86p16_32BGR888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32BGR888_LUT_X86")));
  extern int ConvertX86p16_32RGBA888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32RGBA888_LUT_X86")));
  extern int ConvertX86p16_32BGRA888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32BGRA888_LUT_X86")));
#endif

  #ifdef __cplusplus
  }
  #endif

#endif /* ELF & GNU */



/* Make it run with WATCOM C */
#ifdef __WATCOMC__
#pragma warning 601 9

#pragma aux Hermes_X86_CPU "_*"

#pragma aux ConvertX86 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_32 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_24 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_16 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_8 "_*" modify [EAX EBX ECX EDX ESI EDI]

#pragma aux ConvertX86p32_32BGR888 "_*"
#pragma aux ConvertX86p32_32RGBA888 "_*"
#pragma aux ConvertX86p32_32BGRA888 "_*"
#pragma aux ConvertX86p32_24RGB888 "_*"
#pragma aux ConvertX86p32_24BGR888 "_*"
#pragma aux ConvertX86p32_16RGB565 "_*"
#pragma aux ConvertX86p32_16BGR565 "_*"
#pragma aux ConvertX86p32_16RGB555 "_*"
#pragma aux ConvertX86p32_16BGR555 "_*"
#pragma aux ConvertX86p32_8RGB332 "_*"

#pragma aux ConvertX86p16_32RGB888 "_*"
#pragma aux ConvertX86p16_32BGR888 "_*"
#pragma aux ConvertX86p16_32RGBA888 "_*"
#pragma aux ConvertX86p16_32BGRA888 "_*"
#pragma aux ConvertX86p16_24RGB888 "_*"
#pragma aux ConvertX86p16_24BGR888 "_*"
#pragma aux ConvertX86p16_16BGR565 "_*"
#pragma aux ConvertX86p16_16RGB555 "_*"
#pragma aux ConvertX86p16_16BGR555 "_*"
#pragma aux ConvertX86p16_8RGB332 "_*"

#pragma aux CopyX86p_4byte "_*"
#pragma aux CopyX86p_3byte "_*"
#pragma aux CopyX86p_2byte "_*"
#pragma aux CopyX86p_1byte "_*"

#pragma aux ConvertX86pI8_32 "_*"
#pragma aux ConvertX86pI8_24 "_*"
#pragma aux ConvertX86pI8_16 "_*"

#pragma aux ConvertX86p16_32RGB888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32BGR888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32RGBA888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32BGRA888_LUT_X86 "_*"

#endif /* __WATCOMC__ */


#endif /* X86_ASSEMBLER */


#endif