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SDL no longer grabs the keyboard by default on X11.

Browse source 
You can re-enable that functionality by setting a new hint SDL_HINT_GRAB_KEYBOARD
This commit is contained in:
Sam Lantinga 2012-11-07 15:55:43 -08:00
parent 7f73dcd4f6
commit b9ad4410f8
11 changed files with 59 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

11
include/SDL_hints.h
View file

@ -152,6 +152,17 @@ extern "C" {
*/
#define SDL_HINT_VIDEO_X11_XRANDR "SDL_VIDEO_X11_XRANDR"
/**
* \brief A variable controlling whether grabbing input grabs the keyboard
*
* This variable can be set to the following values:
* "0" - Grab will affect only the mouse
* "1" - Grab will affect mouse and keyboard
*
* By default SDL will not grab the keyboard so system shortcuts still work.
*/
#define SDL_HINT_GRAB_KEYBOARD "SDL_GRAB_KEYBOARD"
/**
* \brief A variable controlling whether the idle timer is disabled on iOS.
*

3
src/video/SDL_sysvideo.h
View file

@ -191,7 +191,7 @@ struct SDL_VideoDevice
void (*SetWindowFullscreen) (_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
int (*SetWindowGammaRamp) (_THIS, SDL_Window * window, const Uint16 * ramp);
int (*GetWindowGammaRamp) (_THIS, SDL_Window * window, Uint16 * ramp);
void (*SetWindowGrab) (_THIS, SDL_Window * window);
void (*SetWindowGrab) (_THIS, SDL_Window * window, SDL_bool grabbed);
void (*DestroyWindow) (_THIS, SDL_Window * window);
int (*CreateWindowFramebuffer) (_THIS, SDL_Window * window, Uint32 * format, void ** pixels, int *pitch);
int (*UpdateWindowFramebuffer) (_THIS, SDL_Window * window, SDL_Rect * rects, int numrects);
@ -364,6 +364,7 @@ extern void SDL_OnWindowMinimized(SDL_Window * window);
extern void SDL_OnWindowRestored(SDL_Window * window);
extern void SDL_OnWindowFocusGained(SDL_Window * window);
extern void SDL_OnWindowFocusLost(SDL_Window * window);
extern void SDL_UpdateWindowGrab(SDL_Window * window);
extern SDL_Window * SDL_GetFocusWindow(void);
#endif /* _SDL_sysvideo_h */

23
src/video/SDL_video.c
View file

@ -1850,11 +1850,18 @@ SDL_GetWindowGammaRamp(SDL_Window * window, Uint16 * red,
return 0;
}
static void
void
SDL_UpdateWindowGrab(SDL_Window * window)
{
if ((window->flags & SDL_WINDOW_INPUT_FOCUS) && _this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
if (_this->SetWindowGrab) {
SDL_bool grabbed;
if ((window->flags & SDL_WINDOW_INPUT_GRABBED) &&
(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
grabbed = SDL_TRUE;
} else {
grabbed = SDL_FALSE;
}
_this->SetWindowGrab(_this, window, grabbed);
}
}
@ -1924,10 +1931,7 @@ SDL_OnWindowFocusGained(SDL_Window * window)
_this->SetWindowGammaRamp(_this, window, window->gamma);
}
if ((window->flags & (SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN)) &&
_this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
}
SDL_UpdateWindowGrab(window);
}
void
@ -1937,10 +1941,7 @@ SDL_OnWindowFocusLost(SDL_Window * window)
_this->SetWindowGammaRamp(_this, window, window->saved_gamma);
}
if ((window->flags & (SDL_WINDOW_INPUT_GRABBED | SDL_WINDOW_FULLSCREEN)) &&
_this->SetWindowGrab) {
_this->SetWindowGrab(_this, window);
}
SDL_UpdateWindowGrab(window);
/* If we're fullscreen on a single-head system and lose focus, minimize */
if ((window->flags & SDL_WINDOW_FULLSCREEN) && _this->num_displays == 1) {

2
src/video/bwindow/SDL_bwindow.cc
View file

@ -195,7 +195,7 @@ int BE_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp) {
}
void BE_SetWindowGrab(_THIS, SDL_Window * window) {
void BE_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed) {
/* TODO: Implement this! */
}

2
src/video/bwindow/SDL_bwindow.h
View file

@ -42,7 +42,7 @@ extern void BE_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered);
extern void BE_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
extern int BE_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp);
extern int BE_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp);
extern void BE_SetWindowGrab(_THIS, SDL_Window * window);
extern void BE_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed);
extern void BE_DestroyWindow(_THIS, SDL_Window * window);
extern SDL_bool BE_GetWindowWMInfo(_THIS, SDL_Window * window,
struct SDL_SysWMinfo *info);

2
src/video/cocoa/SDL_cocoawindow.h
View file

@ -106,7 +106,7 @@ extern void Cocoa_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordere
extern void Cocoa_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
extern int Cocoa_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp);
extern int Cocoa_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp);
extern void Cocoa_SetWindowGrab(_THIS, SDL_Window * window);
extern void Cocoa_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed);
extern void Cocoa_DestroyWindow(_THIS, SDL_Window * window);
extern SDL_bool Cocoa_GetWindowWMInfo(_THIS, SDL_Window * window,
struct SDL_SysWMinfo *info);

5
src/video/cocoa/SDL_cocoawindow.m
View file

@ -992,11 +992,10 @@ Cocoa_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
}
void
Cocoa_SetWindowGrab(_THIS, SDL_Window * window)
Cocoa_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
{
/* Move the cursor to the nearest point in the window */
if ((window->flags & SDL_WINDOW_INPUT_GRABBED) &&
(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
if (grabbed) {
int x, y;
CGPoint cgpoint;

5
src/video/windows/SDL_windowswindow.c
View file

@ -538,12 +538,11 @@ WIN_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp)
}
void
WIN_SetWindowGrab(_THIS, SDL_Window * window)
WIN_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
{
HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
if ((window->flags & SDL_WINDOW_INPUT_GRABBED) &&
(window->flags & SDL_WINDOW_INPUT_FOCUS)) {
if (grabbed) {
RECT rect;
GetClientRect(hwnd, &rect);
ClientToScreen(hwnd, (LPPOINT) & rect);

2
src/video/windows/SDL_windowswindow.h
View file

@ -52,7 +52,7 @@ extern void WIN_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered)
extern void WIN_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
extern int WIN_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp);
extern int WIN_GetWindowGammaRamp(_THIS, SDL_Window * window, Uint16 * ramp);
extern void WIN_SetWindowGrab(_THIS, SDL_Window * window);
extern void WIN_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed);
extern void WIN_DestroyWindow(_THIS, SDL_Window * window);
extern SDL_bool WIN_GetWindowWMInfo(_THIS, SDL_Window * window,
struct SDL_SysWMinfo *info);

36
src/video/x11/SDL_x11window.c
View file

@ -22,6 +22,7 @@
#if SDL_VIDEO_DRIVER_X11
#include "SDL_hints.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../events/SDL_keyboard_c.h"
@ -1089,7 +1090,7 @@ X11_BeginWindowFullscreenLegacy(_THIS, SDL_Window * window, SDL_VideoDisplay * _
XIfEvent(display, &ev, &isMapNotify, (XPointer)&data->xwindow);
XCheckIfEvent(display, &ev, &isUnmapNotify, (XPointer)&data->xwindow);
X11_SetWindowGrab(_this, window);
SDL_UpdateWindowGrab(window);
}
static void
@ -1115,7 +1116,7 @@ X11_EndWindowFullscreenLegacy(_THIS, SDL_Window * window, SDL_VideoDisplay * _di
}
#endif
X11_SetWindowGrab(_this, window);
SDL_UpdateWindowGrab(window);
XReparentWindow(display, data->xwindow, root, window->x, window->y);
@ -1238,19 +1239,21 @@ X11_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp)
}
void
X11_SetWindowGrab(_THIS, SDL_Window * window)
X11_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed)
{
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
Display *display = data->videodata->display;
SDL_bool oldstyle_fullscreen;
SDL_bool grab_keyboard;
const char *hint;
/* ICCCM2.0-compliant window managers can handle fullscreen windows */
/* ICCCM2.0-compliant window managers can handle fullscreen windows
If we're using XVidMode to change resolution we need to confine
the cursor so we don't pan around the virtual desktop.
*/
oldstyle_fullscreen = X11_IsWindowLegacyFullscreen(_this, window);
if (oldstyle_fullscreen ||
((window->flags & SDL_WINDOW_INPUT_GRABBED) &&
(window->flags & SDL_WINDOW_INPUT_FOCUS))) {
if (oldstyle_fullscreen || grabbed) {
/* Try to grab the mouse */
for (;;) {
int result =
@ -1259,15 +1262,26 @@ X11_SetWindowGrab(_THIS, SDL_Window * window)
if (result == GrabSuccess) {
break;
}
SDL_Delay(100);
SDL_Delay(50);
}
/* Raise the window if we grab the mouse */
XRaiseWindow(display, data->xwindow);
/* Now grab the keyboard */
XGrabKeyboard(display, data->xwindow, True, GrabModeAsync,
GrabModeAsync, CurrentTime);
hint = SDL_GetHint(SDL_HINT_GRAB_KEYBOARD);
if (hint && SDL_atoi(hint)) {
grab_keyboard = SDL_TRUE;
} else {
/* We need to do this with the old style override_redirect
fullscreen window otherwise we won't get keyboard focus.
*/
grab_keyboard = oldstyle_fullscreen;
}
if (grab_keyboard) {
XGrabKeyboard(display, data->xwindow, True, GrabModeAsync,
GrabModeAsync, CurrentTime);
}
} else {
XUngrabPointer(display, CurrentTime);
XUngrabKeyboard(display, CurrentTime);

2
src/video/x11/SDL_x11window.h
View file

@ -78,7 +78,7 @@ extern void X11_RestoreWindow(_THIS, SDL_Window * window);
extern void X11_SetWindowBordered(_THIS, SDL_Window * window, SDL_bool bordered);
extern void X11_SetWindowFullscreen(_THIS, SDL_Window * window, SDL_VideoDisplay * display, SDL_bool fullscreen);
extern int X11_SetWindowGammaRamp(_THIS, SDL_Window * window, const Uint16 * ramp);
extern void X11_SetWindowGrab(_THIS, SDL_Window * window);
extern void X11_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed);
extern void X11_DestroyWindow(_THIS, SDL_Window * window);
extern SDL_bool X11_GetWindowWMInfo(_THIS, SDL_Window * window,
struct SDL_SysWMinfo *info);