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video: Add SDL_SetWindowMouseRect. 

This API and implementation comes from the Unreal Engine branch of SDL, which
originally called this "SDL_ConfineCursor".

Some minor cleanup and changes for consistency with the rest of SDL_video, but
there are two major changes:

1. The coordinate system has been changed so that `rect` is _window_ relative
   and not _screen_ relative, making it easier to implement without having
   global access to the display.
2. The UE version unset all rects when passing `NULL` as a parameter for
   `window`, this has been removed as it was an unused feature anyhow.

Currently this is only implemented for X, but can be supported on Wayland and
Windows at minimum too.
This commit is contained in:
Ethan Lee 2021-11-08 13:52:48 -05:00 committed by Sam Lantinga
parent 1a98dcb6aa
commit 4b42c05ba1
23 changed files with 437 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CMakeLists.txt
View File

@ -392,7 +392,7 @@ set_option(SDL_RPATH "Use an rpath when linking SDL" ${UNIX_SYS})
set_option(SDL_CLOCK_GETTIME "Use clock_gettime() instead of gettimeofday()" OFF)
set_option(SDL_X11 "Use X11 video driver" ${UNIX_SYS})
dep_option(SDL_X11_SHARED "Dynamically load X11 support" ON "SDL_X11" OFF)
set(SDL_X11_OPTIONS Xcursor Xinerama XInput Xrandr Xscrnsaver XShape Xvm)
set(SDL_X11_OPTIONS Xcursor Xinerama XInput Xfixes Xrandr Xscrnsaver XShape Xvm)
foreach(_SUB ${SDL_X11_OPTIONS})
string(TOUPPER "SDL_X11_${_SUB}" _OPT)
dep_option(${_OPT} "Enable ${_SUB} support" ON "SDL_X11" OFF)

13
cmake/sdlchecks.cmake
View File

@ -387,7 +387,7 @@ endmacro()
# - HAVE_SDL_LOADSO opt
macro(CheckX11)
if(SDL_X11)
foreach(_LIB X11 Xext Xcursor Xinerama Xi Xrandr Xrender Xss Xxf86vm)
foreach(_LIB X11 Xext Xcursor Xinerama Xi Xfixes Xrandr Xrender Xss Xxf86vm)
FindLibraryAndSONAME("${_LIB}")
endforeach()
@ -412,6 +412,7 @@ macro(CheckX11)
check_include_file(X11/extensions/Xinerama.h HAVE_XINERAMA_H)
check_include_file(X11/extensions/XInput2.h HAVE_XINPUT2_H)
check_include_file(X11/extensions/Xrandr.h HAVE_XRANDR_H)
check_include_file(X11/extensions/Xfixes.h HAVE_XFIXES_H)
check_include_file(X11/extensions/Xrender.h HAVE_XRENDER_H)
check_include_file(X11/extensions/scrnsaver.h HAVE_XSS_H)
check_include_file(X11/extensions/shape.h HAVE_XSHAPE_H)
@ -524,6 +525,16 @@ macro(CheckX11)
endif()
endif()
if(SDL_X11_XFIXES AND HAVE_XFIXES_H)
if(HAVE_X11_SHARED AND XFIXES_LIB)
set(SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES "\"${XFIXES_LIB_SONAME}\"")
else()
list(APPEND EXTRA_LIBS ${XFIXES_LIB})
endif()
set(SDL_VIDEO_DRIVER_X11_XFIXES 1)
set(HAVE_VIDEO_X11_XFIXES TRUE)
endif()
if(SDL_X11_XRANDR AND HAVE_XRANDR_H)
if(HAVE_X11_SHARED AND XRANDR_LIB)
set(SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR "\"${XRANDR_LIB_SONAME}\"")

31
configure.ac
View File

@ -1749,6 +1749,7 @@ CheckX11()
xcursor_lib='/opt/X11/lib/libXcursor.1.dylib'
xinerama_lib='/opt/X11/lib/libXinerama.1.dylib'
xinput_lib='/opt/X11/lib/libXi.6.dylib'
xfixes_lib='/opt/X11/lib/libXfixes.3.dylib'
xrandr_lib='/opt/X11/lib/libXrandr.2.dylib'
xrender_lib='/opt/X11/lib/libXrender.1.dylib'
xss_lib='/opt/X11/lib/libXss.1.dylib'
@ -1760,6 +1761,7 @@ CheckX11()
xcursor_lib='libXcursor.so'
xinerama_lib='libXinerama.so'
xinput_lib='libXi.so'
xfixes_lib='libXfixes.so'
xrandr_lib='libXrandr.so'
xrender_lib='libXrender.so'
xss_lib='libXss.so'
@ -1771,6 +1773,7 @@ CheckX11()
xcursor_lib=[`find_lib "libXcursor.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xinerama_lib=[`find_lib "libXinerama.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xinput_lib=[`find_lib "libXi.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xfixes_lib=[`find_lib "libXfixes.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xrandr_lib=[`find_lib "libXrandr.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xrender_lib=[`find_lib "libXrender.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
xss_lib=[`find_lib "libXss.so.*" "$X_LIBS -L/usr/X11/$base_libdir -L/usr/X11R6/$base_libdir" | sed 's/.*\/\(.*\)/\1/; q'`]
@ -1958,6 +1961,34 @@ XITouchClassInfo *t;
],[])
AC_MSG_RESULT($have_xinput2_multitouch)
fi
AC_ARG_ENABLE(video-x11-xfixes,
[AS_HELP_STRING([--enable-video-x11-xfixes], [enable X11 Xfixes support [default=yes]])],
, enable_video_x11_xfixes=yes)
if test x$enable_video_x11_xfixes = xyes; then
definitely_enable_video_x11_xfixes=no
AC_CHECK_HEADER(X11/extensions/Xfixes.h,
have_xfixes_h_hdr=yes,
have_xfixes_h_hdr=no,
[#include <X11/Xlib.h>
])
if test x$have_xfixes_h_hdr = xyes; then
if test x$enable_x11_shared = xyes && test x$xfixes_lib != x ; then
echo "-- dynamic libXfixes -> $xfixes_lib"
AC_DEFINE_UNQUOTED(SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES, "$xfixes_lib", [ ])
definitely_enable_video_x11_xfixes=yes
else
AC_CHECK_LIB(Xfixes, XFixesCreatePointerBarrier, have_xfixes_lib=yes)
if test x$have_xfixes_lib = xyes ; then
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lXfixes"
definitely_enable_video_x11_xfixes=yes
fi
fi
fi
fi
if test x$definitely_enable_video_x11_xfixes = xyes; then
AC_DEFINE(SDL_VIDEO_DRIVER_X11_XFIXES, 1, [ ])
SUMMARY_video_x11="${SUMMARY_video_x11} xfixes"
fi
AC_ARG_ENABLE(video-x11-xrandr,
[AS_HELP_STRING([--enable-video-x11-xrandr], [enable X11 Xrandr extension for fullscreen [default=yes]])],
, enable_video_x11_xrandr=yes)

2
include/SDL_config.h.cmake
View File

@ -413,6 +413,7 @@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR @SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA @SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 @SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES @SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR @SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS @SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS@
#cmakedefine SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE @SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE@
@ -421,6 +422,7 @@
#cmakedefine SDL_VIDEO_DRIVER_X11_XINERAMA @SDL_VIDEO_DRIVER_X11_XINERAMA@
#cmakedefine SDL_VIDEO_DRIVER_X11_XINPUT2 @SDL_VIDEO_DRIVER_X11_XINPUT2@
#cmakedefine SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH @SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH@
#cmakedefine SDL_VIDEO_DRIVER_X11_XFIXES @SDL_VIDEO_DRIVER_X11_XFIXES@
#cmakedefine SDL_VIDEO_DRIVER_X11_XRANDR @SDL_VIDEO_DRIVER_X11_XRANDR@
#cmakedefine SDL_VIDEO_DRIVER_X11_XSCRNSAVER @SDL_VIDEO_DRIVER_X11_XSCRNSAVER@
#cmakedefine SDL_VIDEO_DRIVER_X11_XSHAPE @SDL_VIDEO_DRIVER_X11_XSHAPE@

2
include/SDL_config.h.in
View File

@ -385,6 +385,7 @@
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS
#undef SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE
@ -393,6 +394,7 @@
#undef SDL_VIDEO_DRIVER_X11_XINERAMA
#undef SDL_VIDEO_DRIVER_X11_XINPUT2
#undef SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
#undef SDL_VIDEO_DRIVER_X11_XFIXES
#undef SDL_VIDEO_DRIVER_X11_XRANDR
#undef SDL_VIDEO_DRIVER_X11_XSCRNSAVER
#undef SDL_VIDEO_DRIVER_X11_XSHAPE

1
include/SDL_test_common.h
View File

@ -73,6 +73,7 @@ typedef struct
int window_minH;
int window_maxW;
int window_maxH;
SDL_Rect confine;
int logical_w;
int logical_h;
float scale;

17
include/SDL_video.h
View File

@ -1497,6 +1497,23 @@ extern DECLSPEC int SDLCALL SDL_SetWindowModalFor(SDL_Window * modal_window, SDL
*/
extern DECLSPEC int SDLCALL SDL_SetWindowInputFocus(SDL_Window * window);
/**
* Confines the cursor in the specified rect area of a window.
*
* Note that this does NOT grab the cursor, it only defines the area a cursor
* is restricted to when the window has mouse focus.
*
* \param window The window that will be associated with the barrier.
* \param rect A rectangle area in window-relative coordinates. If NULL the
* barrier for the specified window will be destroyed.
*
* \returns 0 on success or a negative error code on failure; call
* SDL_GetError() for more information.
*
* \sa SDL_SetWindowGrab
*/
extern DECLSPEC int SDLCALL SDL_SetWindowMouseRect(SDL_Window * window, const SDL_Rect * rect);
/**
* Set the gamma ramp for the display that owns a given window.
*

1
src/dynapi/SDL_dynapi_overrides.h
View File

@ -842,3 +842,4 @@
#define SDL_hid_get_product_string SDL_hid_get_product_string_REAL
#define SDL_hid_get_serial_number_string SDL_hid_get_serial_number_string_REAL
#define SDL_hid_get_indexed_string SDL_hid_get_indexed_string_REAL
#define SDL_SetWindowMouseRect SDL_SetWindowMouseRect_REAL

1
src/dynapi/SDL_dynapi_procs.h
View File

@ -911,3 +911,4 @@ SDL_DYNAPI_PROC(int,SDL_hid_get_manufacturer_string,(SDL_hid_device *a, wchar_t
SDL_DYNAPI_PROC(int,SDL_hid_get_product_string,(SDL_hid_device *a, wchar_t *b, size_t c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_hid_get_serial_number_string,(SDL_hid_device *a, wchar_t *b, size_t c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_hid_get_indexed_string,(SDL_hid_device *a, int b, wchar_t *c, size_t d),(a,b,c,d),return)
SDL_DYNAPI_PROC(int,SDL_SetWindowMouseRect,(SDL_Window *a, const SDL_Rect *b),(a,b),return)

35
src/test/SDL_test_common.c
View File

@ -37,7 +37,8 @@ static const char *video_usage[] = {
"[--scale N]", "[--depth N]", "[--refresh R]", "[--vsync]", "[--noframe]",
"[--resizable]", "[--minimize]", "[--maximize]", "[--grab]", "[--keyboard-grab]",
"[--shown]", "[--hidden]", "[--input-focus]", "[--mouse-focus]",
"[--flash-on-focus-loss]", "[--allow-highdpi]", "[--usable-bounds]"
"[--flash-on-focus-loss]", "[--allow-highdpi]", "[--confine-cursor X,Y,W,H]",
"[--usable-bounds]"
};
static const char *audio_usage[] = {
@ -296,6 +297,34 @@ SDLTest_CommonArg(SDLTest_CommonState * state, int index)
state->window_y = SDL_atoi(y);
return 2;
}
if (SDL_strcasecmp(argv[index], "--confine-cursor") == 0) {
char *x, *y, *w, *h;
++index;
if (!argv[index]) {
return -1;
}
x = argv[index];
y = argv[index];
#define SEARCHARG(dim) \
while (*dim && *dim != ',') { \
++dim; \
} \
if (!*dim) { \
return -1; \
} \
*dim++ = '\0';
SEARCHARG(y)
w = y;
SEARCHARG(w)
h = w;
SEARCHARG(h)
#undef SEARCHARG
state->confine.x = SDL_atoi(x);
state->confine.y = SDL_atoi(y);
state->confine.w = SDL_atoi(w);
state->confine.h = SDL_atoi(h);
return 2;
}
if (SDL_strcasecmp(argv[index], "--usable-bounds") == 0) {
/* !!! FIXME: this is a bit of a hack, but I don't want to add a
!!! FIXME: flag to the public structure in 2.0.x */
@ -1289,6 +1318,10 @@ SDLTest_CommonInit(SDLTest_CommonState * state)
SDL_ShowWindow(state->windows[i]);
if (!SDL_RectEmpty(&state->confine)) {
SDL_SetWindowMouseRect(state->windows[i], &state->confine);
}
if (!state->skip_renderer
&& (state->renderdriver
|| !(state->window_flags & (SDL_WINDOW_OPENGL | SDL_WINDOW_VULKAN | SDL_WINDOW_METAL)))) {

1
src/video/SDL_sysvideo.h
View File

@ -243,6 +243,7 @@ struct SDL_VideoDevice
void (*DestroyWindowFramebuffer) (_THIS, SDL_Window * window);
void (*OnWindowEnter) (_THIS, SDL_Window * window);
int (*FlashWindow) (_THIS, SDL_Window * window, SDL_FlashOperation operation);
int (*SetWindowMouseRect)(_THIS, SDL_Window * window, const SDL_Rect * rect);
/* * * */
/*

10
src/video/SDL_video.c
View File

@ -2832,6 +2832,16 @@ SDL_GetGrabbedWindow(void)
}
}
int
SDL_SetWindowMouseRect(SDL_Window * window, const SDL_Rect * rect)
{
CHECK_WINDOW_MAGIC(window, -1);
if (!_this->SetWindowMouseRect) {
return SDL_Unsupported();
}
return _this->SetWindowMouseRect(_this, window, rect);
}
int
SDL_FlashWindow(SDL_Window * window, SDL_FlashOperation operation)
{

4
src/video/x11/SDL_x11dyn.c
View File

@ -53,6 +53,9 @@ typedef struct
#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2
#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 NULL
#endif
#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES
#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES NULL
#endif
#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR
#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR NULL
#endif
@ -69,6 +72,7 @@ static x11dynlib x11libs[] = {
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINERAMA},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS},
{NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XVIDMODE}

3
src/video/x11/SDL_x11dyn.h
View File

@ -58,6 +58,9 @@
#if SDL_VIDEO_DRIVER_X11_XINPUT2
#include <X11/extensions/XInput2.h>
#endif
#if SDL_VIDEO_DRIVER_X11_XFIXES
#include <X11/extensions/Xfixes.h>
#endif
#if SDL_VIDEO_DRIVER_X11_XRANDR
#include <X11/extensions/Xrandr.h>
#endif

32
src/video/x11/SDL_x11events.c
View File

@ -31,6 +31,7 @@
#include "SDL_x11video.h"
#include "SDL_x11touch.h"
#include "SDL_x11xinput2.h"
#include "SDL_x11xfixes.h"
#include "../../core/unix/SDL_poll.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_mouse_c.h"
@ -869,6 +870,16 @@ X11_DispatchEvent(_THIS, XEvent *xevent)
mouse->last_x = xevent->xcrossing.x;
mouse->last_y = xevent->xcrossing.y;
#if SDL_VIDEO_DRIVER_X11_XFIXES
{
/* Only create the barriers if we have input focus */
SDL_WindowData* windowdata = (SDL_WindowData *) data->window->driverdata;
if ((data->pointer_barrier_active == SDL_TRUE) && windowdata->window->flags & SDL_WINDOW_INPUT_FOCUS) {
X11_ConfineCursorWithFlags(_this, windowdata->window, &windowdata->barrier_rect, X11_BARRIER_HANDLED_BY_EVENT);
}
}
#endif
if (!mouse->relative_mode) {
SDL_SendMouseMotion(data->window, 0, 0, xevent->xcrossing.x, xevent->xcrossing.y);
}
@ -974,6 +985,13 @@ X11_DispatchEvent(_THIS, XEvent *xevent)
data->pending_focus = PENDING_FOCUS_OUT;
data->pending_focus_time = SDL_GetTicks() + PENDING_FOCUS_TIME;
}
#if SDL_VIDEO_DRIVER_X11_XFIXES
/* Disable confinement if it is activated. */
if (data->pointer_barrier_active == SDL_TRUE) {
X11_ConfineCursorWithFlags(_this, data->window, NULL, X11_BARRIER_HANDLED_BY_EVENT);
}
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
}
break;
@ -1059,6 +1077,13 @@ X11_DispatchEvent(_THIS, XEvent *xevent)
} else {
X11_DispatchUnmapNotify(data);
}
#if SDL_VIDEO_DRIVER_X11_XFIXES
/* Disable confiment if the window gets hidden. */
if (data->pointer_barrier_active == SDL_TRUE) {
X11_ConfineCursorWithFlags(_this, data->window, NULL, X11_BARRIER_HANDLED_BY_EVENT);
}
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
}
break;
@ -1068,6 +1093,13 @@ X11_DispatchEvent(_THIS, XEvent *xevent)
printf("window %p: MapNotify!\n", data);
#endif
X11_DispatchMapNotify(data);
#if SDL_VIDEO_DRIVER_X11_XFIXES
/* Enable confiment if it was activated. */
if (data->pointer_barrier_active == SDL_TRUE) {
X11_ConfineCursorWithFlags(_this, data->window, &data->barrier_rect, X11_BARRIER_HANDLED_BY_EVENT);
}
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
}
break;

8
src/video/x11/SDL_x11mouse.c
View File

@ -321,8 +321,16 @@ static void
X11_WarpMouse(SDL_Window * window, int x, int y)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
#if SDL_VIDEO_DRIVER_X11_XFIXES
/* If we have no barrier, we need to warp */
if (data->pointer_barrier_active == SDL_FALSE) {
WarpMouseInternal(data->xwindow, x, y);
}
#else
WarpMouseInternal(data->xwindow, x, y);
#endif
}
static int
X11_WarpMouseGlobal(int x, int y)

8
src/video/x11/SDL_x11sym.h
View File

@ -158,6 +158,14 @@ SDL_X11_SYM(SDL_X11_XESetEventToWireRetType,XESetEventToWire,(Display* a,int b,S
SDL_X11_SYM(void,XRefreshKeyboardMapping,(XMappingEvent *a),(a),)
SDL_X11_SYM(int,XQueryTree,(Display* a,Window b,Window* c,Window* d,Window** e,unsigned int* f),(a,b,c,d,e,f),return)
#if SDL_VIDEO_DRIVER_X11_XFIXES
SDL_X11_MODULE(XFIXES)
SDL_X11_SYM(PointerBarrier, XFixesCreatePointerBarrier, (Display* a, Window b, int c, int d, int e, int f, int g, int h, int *i),(a,b,c,d,e,f,g,h,i),return)
SDL_X11_SYM(void, XFixesDestroyPointerBarrier, (Display* a, PointerBarrier b), (a,b),)
SDL_X11_SYM(int, XIBarrierReleasePointer,(Display* a, int b, PointerBarrier c, BarrierEventID d), (a,b,c,d), return)
SDL_X11_SYM(Status, XFixesQueryVersion,(Display* a, int* b, int* c), (a,b,c), return)
#endif
#if SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS
SDL_X11_SYM(Bool,XGetEventData,(Display* a,XGenericEventCookie* b),(a,b),return)
SDL_X11_SYM(void,XFreeEventData,(Display* a,XGenericEventCookie* b),(a,b),)

13
src/video/x11/SDL_x11video.c
View File

@ -36,6 +36,7 @@
#include "SDL_x11shape.h"
#include "SDL_x11touch.h"
#include "SDL_x11xinput2.h"
#include "SDL_x11xfixes.h"
#if SDL_VIDEO_OPENGL_EGL
#include "SDL_x11opengles.h"
@ -187,6 +188,10 @@ X11_CreateDevice(int devindex)
data->global_mouse_changed = SDL_TRUE;
#if SDL_VIDEO_DRIVER_X11_XFIXES
data->active_cursor_confined_window = NULL;
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
data->display = x11_display;
data->request_display = X11_XOpenDisplay(display);
if (data->request_display == NULL) {
@ -256,6 +261,10 @@ X11_CreateDevice(int devindex)
device->AcceptDragAndDrop = X11_AcceptDragAndDrop;
device->FlashWindow = X11_FlashWindow;
#if SDL_VIDEO_DRIVER_X11_XFIXES
device->SetWindowMouseRect = X11_SetWindowMouseRect;
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
device->shape_driver.CreateShaper = X11_CreateShaper;
device->shape_driver.SetWindowShape = X11_SetWindowShape;
device->shape_driver.ResizeWindowShape = X11_ResizeWindowShape;
@ -447,6 +456,10 @@ X11_VideoInit(_THIS)
X11_InitXinput2(_this);
#ifdef SDL_VIDEO_DRIVER_X11_XFIXES
X11_InitXfixes(_this);
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
if (X11_InitKeyboard(_this) != 0) {
return -1;
}

3
src/video/x11/SDL_x11video.h
View File

@ -85,6 +85,9 @@ typedef struct SDL_VideoData
int windowlistlength;
XID window_group;
Window clipboard_window;
#if SDL_VIDEO_DRIVER_X11_XFIXES
SDL_Window *active_cursor_confined_window;
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
/* This is true for ICCCM2.0-compliant window managers */
SDL_bool net_wm;

14
src/video/x11/SDL_x11window.c
View File

@ -32,6 +32,7 @@
#include "SDL_x11mouse.h"
#include "SDL_x11shape.h"
#include "SDL_x11xinput2.h"
#include "SDL_x11xfixes.h"
#if SDL_VIDEO_OPENGL_EGL
#include "SDL_x11opengles.h"
@ -330,6 +331,12 @@ SetupWindowData(_THIS, SDL_Window * window, Window w, BOOL created)
}
}
#if SDL_VIDEO_DRIVER_X11_XFIXES
data->pointer_barrier_active = SDL_FALSE;
SDL_memset(&data->barrier, 0, sizeof(data->barrier));
SDL_memset(&data->barrier_rect, 0, sizeof(SDL_Rect));
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
/* All done! */
window->driverdata = data;
return 0;
@ -1781,6 +1788,13 @@ X11_DestroyWindow(_THIS, SDL_Window * window)
X11_XFlush(display);
}
SDL_free(data);
#if SDL_VIDEO_DRIVER_X11_XFIXES
/* If the pointer barriers are active for this, deactivate it.*/
if (videodata->active_cursor_confined_window == window) {
X11_DestroyPointerBarrier(_this, window);
}
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
}
window->driverdata = NULL;
}

5
src/video/x11/SDL_x11window.h
View File

@ -73,6 +73,11 @@ typedef struct
#if SDL_VIDEO_OPENGL_EGL
EGLSurface egl_surface;
#endif
#if SDL_VIDEO_DRIVER_X11_XFIXES
SDL_bool pointer_barrier_active;
PointerBarrier barrier[4];
SDL_Rect barrier_rect;
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
} SDL_WindowData;
extern void X11_SetNetWMState(_THIS, Window xwindow, Uint32 flags);

193
src/video/x11/SDL_x11xfixes.c Normal file
View File

@ -0,0 +1,193 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_DRIVER_X11_XFIXES
#include "SDL_x11video.h"
#include "SDL_x11xfixes.h"
#include "../../events/SDL_mouse_c.h"
#include "../../events/SDL_touch_c.h"
static int xfixes_initialized = 0;
static int
query_xfixes_version(Display *display, int major, int minor)
{
/* We don't care if this fails, so long as it sets major/minor on it's way out the door. */
X11_XFixesQueryVersion(display, &major, &minor);
return ((major * 1000) + minor);
}
static SDL_bool
xfixes_version_atleast(const int version, const int wantmajor, const int wantminor)
{
return (version >= ((wantmajor * 1000) + wantminor));
}
void
X11_InitXfixes(_THIS)
{
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
int version = 0;
int event, error;
int fixes_opcode;
if (!SDL_X11_HAVE_XFIXES ||
!X11_XQueryExtension(data->display, "XFIXES", &fixes_opcode, &event, &error)) {
return;
}
/* We need at least 5.0 for barriers. */
version = query_xfixes_version(data->display, 5, 0);
if (!xfixes_version_atleast(version, 5, 0)) {
return; /* X server does not support the version we want at all. */
}
xfixes_initialized = 1;
}
int
X11_XfixesIsInitialized()
{
return xfixes_initialized;
}
int
X11_SetWindowMouseRect(_THIS, SDL_Window * window, const SDL_Rect * rect)
{
return X11_ConfineCursorWithFlags(_this, window, rect, 0);
}
int
X11_ConfineCursorWithFlags(_THIS, SDL_Window * window, const SDL_Rect * rect, int flags)
{
/* Yaakuro: For some reason Xfixes when confining inside a rect where the
* edges exactly match, a rectangle the cursor 'slips' out of the barrier.
* To prevent that the lines for the barriers will span the whole screen.
*/
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *wdata;
if (!X11_XfixesIsInitialized()) {
return SDL_Unsupported();
}
/* If there is already a set of barriers active, disable them. */
if (data->active_cursor_confined_window) {
X11_DestroyPointerBarrier(_this, data->active_cursor_confined_window);
}
SDL_assert(window != NULL);
wdata = (SDL_WindowData *) window->driverdata;
/* If user did not specify an area to confine, destroy the barrier that was/is assigned to
* this window it was assigned*/
if (rect) {
int x1, y1, x2, y2;
SDL_Rect bounds;
SDL_GetWindowPosition(window, &bounds.x, &bounds.y);
SDL_GetWindowSize(window, &bounds.w, &bounds.h);
/** Negative values are not allowed. Clip values relative to the specified window. */
x1 = bounds.x + SDL_max(rect->x, 0);
y1 = bounds.y + SDL_max(rect->y, 0);
x2 = SDL_min(bounds.x + rect->x + rect->w, bounds.x + bounds.w);
y2 = SDL_min(bounds.y + rect->y + rect->h, bounds.y + bounds.h);
if ((wdata->barrier_rect.x != rect->x) ||
(wdata->barrier_rect.y != rect->y) ||
(wdata->barrier_rect.w != rect->w) ||
(wdata->barrier_rect.h != rect->h)) {
wdata->barrier_rect = *rect;
}
/* Use the display bounds to ensure the barriers don't have corner gaps */
SDL_GetDisplayBounds(SDL_GetWindowDisplayIndex(window), &bounds);
/** Create the left barrier */
wdata->barrier[0] = X11_XFixesCreatePointerBarrier(data->display, wdata->xwindow,
x1, bounds.y,
x1, bounds.y + bounds.h,
BarrierPositiveX,
0, NULL);
/** Create the right barrier */
wdata->barrier[1] = X11_XFixesCreatePointerBarrier(data->display, wdata->xwindow,
x2, bounds.y,
x2, bounds.y + bounds.h,
BarrierNegativeX,
0, NULL);
/** Create the top barrier */
wdata->barrier[2] = X11_XFixesCreatePointerBarrier(data->display, wdata->xwindow,
bounds.x, y1,
bounds.x + bounds.w, y1,
BarrierPositiveY,
0, NULL);
/** Create the bottom barrier */
wdata->barrier[3] = X11_XFixesCreatePointerBarrier(data->display, wdata->xwindow,
bounds.x, y2,
bounds.x + bounds.w, y2,
BarrierNegativeY,
0, NULL);
X11_XFlush(data->display);
/* Lets remember current active confined window. */
data->active_cursor_confined_window = window;
/* User activated the confinement for this window. We use this later to reactivate
* the confinement if it got deactivated by FocusOut or UnmapNotify */
wdata->pointer_barrier_active = SDL_TRUE;
} else {
X11_DestroyPointerBarrier(_this, window);
/* Only set barrier inactive when user specified NULL and not handled by focus out. */
if (flags != X11_BARRIER_HANDLED_BY_EVENT) {
wdata->pointer_barrier_active = SDL_FALSE;
}
}
return 0;
}
void
X11_DestroyPointerBarrier(_THIS, SDL_Window * window)
{
int i;
SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;
if (window) {
SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
for (i = 0; i < 4; i++) {
if (wdata->barrier[i] > 0) {
X11_XFixesDestroyPointerBarrier(data->display, wdata->barrier[i]);
wdata->barrier[i] = 0;
}
}
X11_XFlush(data->display);
}
data->active_cursor_confined_window = NULL;
}
#endif /* SDL_VIDEO_DRIVER_X11 && SDL_VIDEO_DRIVER_X11_XFIXES */
/* vi: set ts=4 sw=4 expandtab: */

41
src/video/x11/SDL_x11xfixes.h Normal file
View File

@ -0,0 +1,41 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#ifndef SDL_x11xfixes_h_
#define SDL_x11xfixes_h_
#if SDL_VIDEO_DRIVER_X11_XFIXES
#define X11_BARRIER_HANDLED_BY_EVENT 1
extern void X11_InitXfixes(_THIS);
extern int X11_XfixesIsInitialized(void);
extern int X11_SetWindowMouseRect(_THIS, SDL_Window * window, const SDL_Rect * rect);
extern int X11_ConfineCursorWithFlags(_THIS, SDL_Window * window, const SDL_Rect * rect, int flags);
extern void X11_DestroyPointerBarrier(_THIS, SDL_Window * window);
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
#endif /* SDL_x11xfixes_h_ */
/* vi: set ts=4 sw=4 expandtab: */