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view src/video/SDL_sysvideo.h @ 1192:54aa9aa32327
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Fri, 18 Nov 2005 23:39:02 +0100
Subject: [SDL] Mouse position bugs on Mac OS X
The attached patch fixes a few bugs in SDL related to the mouse position
in windowed mode on Mac OS X, reproduced using the attached minimal test
program - at least here on 10.3.9, with SDL CVS from today. Could anyone
test whether the bugs exist and are fixed by the patch on 10.2 and 10.4?
1. When using OpenGL, the vertical mouse positions obtained through
events or SDL_GetMouseState() are off by one.
2. When using OpenGL, SDL_WarpMouse() inverts the y coordinate.
3. Clicks on the topmost pixel row of the window are not recognized.
1 and 2 do not occur in non-OpenGL mode, while 3 does. All three only
occur in windowed mode, not in fullscreen.
The cause for 1 and 3 is that in Cocoa, "the location of the mouse"
seems to be defined as "the location of the top left corner of the mouse
pointer's hot pixel" (this is not documented, it's just what I found out
here), which together with the fact that Cocoa's usual y coordinates
start at the bottom and increase upwards means that the y coordinate of
the mouse runs from 1 to h, not from 0 to h-1, in a window of height h.
If it does work on 10.2 and 10.4 (I'll try to test it as soon as I can,
but at the moment all I have at hand is 10.3.9), can this be applied to
the CVS?
-Christian
To: sdl@libsdl.org
From: Christian Walther <cwalther@gmx.ch>
Date: Mon, 28 Nov 2005 10:41:51 +0100
Subject: [SDL] Re: Mouse position bugs on Mac OS X
I wrote:
> I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9
So, here are the results of my tests (with patched and unpatched
frameworks compiled with Xcode 1.5 (gcc 3.3) on 10.3.9):
On 10.1.5, my test program doesn't run because of "Undefined symbols:
SDL undefined reference to _CGMainDisplayID expected to be defined in
Carbon". I guess not supporting 10.1 was a deliberate decision then and
that's OK with me.
On 10.2.8, 10.3.9, and 10.4.0, the bugs exist as described in my
original post and are fixed by my patch. That is, there is no difference
between pre/post 10.3 and the patched version works correctly in all
combinations of GL/non-GL and windowed/fullscreen.
I therefore recommend the patch for inclusion.
-Christian
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Mon, 28 Nov 2005 13:58:26 +0000 |
parents | 173c063d4f55 |
children | 86d0d01290ea |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 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 #ifndef _SDL_sysvideo_h #define _SDL_sysvideo_h #include "SDL_mouse.h" #define SDL_PROTOTYPES_ONLY #include "SDL_syswm.h" #undef SDL_PROTOTYPES_ONLY /* This file prototypes the video driver implementation. This is designed to be easily converted to C++ in the future. */ /* OpenGL is pretty much available on all Windows systems */ #ifdef WIN32 #ifndef _WIN32_WCE #define HAVE_OPENGL #endif #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif #ifdef HAVE_OPENGL #ifdef MACOSX #include <OpenGL/gl.h> /* OpenGL.framework */ #else #include <GL/gl.h> #endif /* MACOSX */ #endif /* HAVE_OPENGL */ /* The SDL video driver */ typedef struct SDL_VideoDevice SDL_VideoDevice; /* Define the SDL video driver structure */ #define _THIS SDL_VideoDevice *_this #ifndef _STATUS #define _STATUS SDL_status *status #endif struct SDL_VideoDevice { /* * * */ /* The name of this video driver */ const char *name; /* * * */ /* Initialization/Query functions */ /* Initialize the native video subsystem, filling 'vformat' with the "best" display pixel format, returning 0 or -1 if there's an error. */ int (*VideoInit)(_THIS, SDL_PixelFormat *vformat); /* List the available video modes for the given pixel format, sorted from largest to smallest. */ SDL_Rect **(*ListModes)(_THIS, SDL_PixelFormat *format, Uint32 flags); /* Set the requested video mode, returning a surface which will be set to the SDL_VideoSurface. The width and height will already be verified by ListModes(), and the video subsystem is free to set the mode to a supported bit depth different from the one specified -- the desired bpp will be emulated with a shadow surface if necessary. If a new mode is returned, this function should take care of cleaning up the current mode. */ SDL_Surface *(*SetVideoMode)(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); /* Toggle the fullscreen mode */ int (*ToggleFullScreen)(_THIS, int on); /* This is called after the video mode has been set, to get the initial mouse state. It should queue events as necessary to properly represent the current mouse focus and position. */ void (*UpdateMouse)(_THIS); /* Create a YUV video surface (possibly overlay) of the given format. The hardware should be able to perform at least 2x scaling on display. */ SDL_Overlay *(*CreateYUVOverlay)(_THIS, int width, int height, Uint32 format, SDL_Surface *display); /* Sets the color entries { firstcolor .. (firstcolor+ncolors-1) } of the physical palette to those in 'colors'. If the device is using a software palette (SDL_HWPALETTE not set), then the changes are reflected in the logical palette of the screen as well. The return value is 1 if all entries could be set properly or 0 otherwise. */ int (*SetColors)(_THIS, int firstcolor, int ncolors, SDL_Color *colors); /* This pointer should exist in the native video subsystem and should point to an appropriate update function for the current video mode */ void (*UpdateRects)(_THIS, int numrects, SDL_Rect *rects); /* Reverse the effects VideoInit() -- called if VideoInit() fails or if the application is shutting down the video subsystem. */ void (*VideoQuit)(_THIS); /* * * */ /* Hardware acceleration functions */ /* Information about the video hardware */ SDL_VideoInfo info; /* The pixel format used when SDL_CreateRGBSurface creates SDL_HWSURFACEs with alpha */ SDL_PixelFormat* displayformatalphapixel; /* Allocates a surface in video memory */ int (*AllocHWSurface)(_THIS, SDL_Surface *surface); /* Sets the hardware accelerated blit function, if any, based on the current flags of the surface (colorkey, alpha, etc.) */ int (*CheckHWBlit)(_THIS, SDL_Surface *src, SDL_Surface *dst); /* Fills a surface rectangle with the given color */ int (*FillHWRect)(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color); /* Sets video mem colorkey and accelerated blit function */ int (*SetHWColorKey)(_THIS, SDL_Surface *surface, Uint32 key); /* Sets per surface hardware alpha value */ int (*SetHWAlpha)(_THIS, SDL_Surface *surface, Uint8 value); /* Returns a readable/writable surface */ int (*LockHWSurface)(_THIS, SDL_Surface *surface); void (*UnlockHWSurface)(_THIS, SDL_Surface *surface); /* Performs hardware flipping */ int (*FlipHWSurface)(_THIS, SDL_Surface *surface); /* Frees a previously allocated video surface */ void (*FreeHWSurface)(_THIS, SDL_Surface *surface); /* * * */ /* Gamma support */ Uint16 *gamma; /* Set the gamma correction directly (emulated with gamma ramps) */ int (*SetGamma)(_THIS, float red, float green, float blue); /* Get the gamma correction directly (emulated with gamma ramps) */ int (*GetGamma)(_THIS, float *red, float *green, float *blue); /* Set the gamma ramp */ int (*SetGammaRamp)(_THIS, Uint16 *ramp); /* Get the gamma ramp */ int (*GetGammaRamp)(_THIS, Uint16 *ramp); /* * * */ /* OpenGL support */ /* Sets the dll to use for OpenGL and loads it */ int (*GL_LoadLibrary)(_THIS, const char *path); /* Retrieves the address of a function in the gl library */ void* (*GL_GetProcAddress)(_THIS, const char *proc); /* Get attribute information from the windowing system. */ int (*GL_GetAttribute)(_THIS, SDL_GLattr attrib, int* value); /* Make the context associated with this driver current */ int (*GL_MakeCurrent)(_THIS); /* Swap the current buffers in double buffer mode. */ void (*GL_SwapBuffers)(_THIS); /* OpenGL functions for SDL_OPENGLBLIT */ #ifdef HAVE_OPENGL #ifndef WIN32 #define WINAPI #endif #define SDL_PROC(ret,func,params) ret (WINAPI *func) params; #include "SDL_glfuncs.h" #undef SDL_PROC /* Texture id */ GLuint texture; #endif int is_32bit; /* * * */ /* Window manager functions */ /* Set the title and icon text */ void (*SetCaption)(_THIS, const char *title, const char *icon); /* Set the window icon image */ void (*SetIcon)(_THIS, SDL_Surface *icon, Uint8 *mask); /* Iconify the window. This function returns 1 if there is a window manager and the window was actually iconified, it returns 0 otherwise. */ int (*IconifyWindow)(_THIS); /* Grab or ungrab keyboard and mouse input */ SDL_GrabMode (*GrabInput)(_THIS, SDL_GrabMode mode); /* Get some platform dependent window information */ int (*GetWMInfo)(_THIS, SDL_SysWMinfo *info); /* * * */ /* Cursor manager functions */ /* Free a window manager cursor This function can be NULL if CreateWMCursor is also NULL. */ void (*FreeWMCursor)(_THIS, WMcursor *cursor); /* If not NULL, create a black/white window manager cursor */ WMcursor *(*CreateWMCursor)(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y); /* Show the specified cursor, or hide if cursor is NULL */ int (*ShowWMCursor)(_THIS, WMcursor *cursor); /* Warp the window manager cursor to (x,y) If NULL, a mouse motion event is posted internally. */ void (*WarpWMCursor)(_THIS, Uint16 x, Uint16 y); /* If not NULL, this is called when a mouse motion event occurs */ void (*MoveWMCursor)(_THIS, int x, int y); /* Determine whether the mouse should be in relative mode or not. This function is called when the input grab state or cursor visibility state changes. If the cursor is not visible, and the input is grabbed, the driver can place the mouse in relative mode, which may result in higher accuracy sampling of the pointer motion. */ void (*CheckMouseMode)(_THIS); /* * * */ /* Event manager functions */ /* Initialize keyboard mapping for this driver */ void (*InitOSKeymap)(_THIS); /* Handle any queued OS events */ void (*PumpEvents)(_THIS); /* * * */ /* Data common to all drivers */ SDL_Surface *screen; SDL_Surface *shadow; SDL_Surface *visible; SDL_Palette *physpal; /* physical palette, if != logical palette */ SDL_Color *gammacols; /* gamma-corrected colours, or NULL */ char *wm_title; char *wm_icon; int offset_x; int offset_y; SDL_GrabMode input_grab; /* Driver information flags */ int handles_any_size; /* Driver handles any size video mode */ /* * * */ /* Data used by the GL drivers */ struct { int red_size; int green_size; int blue_size; int alpha_size; int depth_size; int buffer_size; int stencil_size; int double_buffer; int accum_red_size; int accum_green_size; int accum_blue_size; int accum_alpha_size; int stereo; int multisamplebuffers; int multisamplesamples; int driver_loaded; char driver_path[256]; void* dll_handle; } gl_config; /* * * */ /* Data private to this driver */ struct SDL_PrivateVideoData *hidden; struct SDL_PrivateGLData *gl_data; /* * * */ /* The function used to dispose of this structure */ void (*free)(_THIS); }; #undef _THIS typedef struct VideoBootStrap { const char *name; const char *desc; int (*available)(void); SDL_VideoDevice *(*create)(int devindex); } VideoBootStrap; #ifdef ENABLE_X11 extern VideoBootStrap X11_bootstrap; #endif #ifdef ENABLE_DGA extern VideoBootStrap DGA_bootstrap; #endif #ifdef ENABLE_NANOX extern VideoBootStrap NX_bootstrap; #endif #ifdef ENABLE_IPOD extern VideoBootStrap iPod_bootstrap; #endif #ifdef ENABLE_FBCON extern VideoBootStrap FBCON_bootstrap; #endif #ifdef ENABLE_DIRECTFB extern VideoBootStrap DirectFB_bootstrap; #endif #ifdef ENABLE_PS2GS extern VideoBootStrap PS2GS_bootstrap; #endif #ifdef ENABLE_GGI extern VideoBootStrap GGI_bootstrap; #endif #ifdef ENABLE_VGL extern VideoBootStrap VGL_bootstrap; #endif #ifdef ENABLE_SVGALIB extern VideoBootStrap SVGALIB_bootstrap; #endif #ifdef ENABLE_AALIB extern VideoBootStrap AALIB_bootstrap; #endif #ifdef ENABLE_WINDIB extern VideoBootStrap WINDIB_bootstrap; #endif #ifdef ENABLE_DIRECTX extern VideoBootStrap DIRECTX_bootstrap; #endif #ifdef ENABLE_BWINDOW extern VideoBootStrap BWINDOW_bootstrap; #endif /* MacOS X gets the proper defines from configure */ #if defined(macintosh) && !defined(MACOSX) #define ENABLE_TOOLBOX #if !TARGET_API_MAC_CARBON #define ENABLE_DRAWSPROCKET #endif #endif #ifdef ENABLE_TOOLBOX extern VideoBootStrap TOOLBOX_bootstrap; #endif #ifdef ENABLE_DRAWSPROCKET extern VideoBootStrap DSp_bootstrap; #endif #ifdef ENABLE_QUARTZ extern VideoBootStrap QZ_bootstrap; #endif #ifdef ENABLE_CYBERGRAPHICS extern VideoBootStrap CGX_bootstrap; #endif #ifdef ENABLE_PHOTON extern VideoBootStrap ph_bootstrap; #endif #ifdef ENABLE_EPOC extern VideoBootStrap EPOC_bootstrap; #endif #ifdef ENABLE_DUMMYVIDEO extern VideoBootStrap DUMMY_bootstrap; #endif #ifdef ENABLE_XBIOS extern VideoBootStrap XBIOS_bootstrap; #endif #ifdef ENABLE_GEM extern VideoBootStrap GEM_bootstrap; #endif #ifdef ENABLE_QTOPIA extern VideoBootStrap Qtopia_bootstrap; #endif #ifdef ENABLE_WSCONS extern VideoBootStrap WSCONS_bootstrap; #endif #ifdef ENABLE_PICOGUI extern VideoBootStrap PG_bootstrap; #endif #ifdef ENABLE_DC extern VideoBootStrap DC_bootstrap; #endif #ifdef ENABLE_RISCOS extern VideoBootStrap RISCOS_bootstrap; #endif #ifdef __OS2__ extern VideoBootStrap OS2FSLib_bootstrap; #endif /* This is the current video device */ extern SDL_VideoDevice *current_video; #define SDL_VideoSurface (current_video->screen) #define SDL_ShadowSurface (current_video->shadow) #define SDL_PublicSurface (current_video->visible) #endif /* _SDL_sysvideo_h */