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Added preliminary alt-tab support on linux

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This commit is contained in:
Elias Naur 2003-02-12 17:12:01 +00:00
parent 68045ce08f
commit e3eeff94b0
3 changed files with 68 additions and 76 deletions
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59
src/native/linux/org_lwjgl_input_Mouse.cpp
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@ -55,13 +55,12 @@
extern Display *disp;
extern Window win;
extern int screen;
extern bool isFullscreen(void);
extern bool isFocused(void);
extern int getWindowWidth(void);
extern int getWindowHeight(void);
extern void handleMessages(void);
static bool pointer_grabbed;
static bool created = false;
static jfieldID fid_has_wheel = NULL;
static jfieldID fid_button_count = NULL;
@ -124,13 +123,10 @@ int blankCursor(void) {
int grabPointer(void) {
int result;
int mask = EnterWindowMask | LeaveWindowMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
if (isFullscreen()) {
result = XGrabPointer(disp, win, False, mask, GrabModeAsync, GrabModeAsync, win, blank_cursor, CurrentTime);
XWarpPointer(disp, None, win, 0, 0, 0, 0, current_x, current_y);
XF86VidModeSetViewPort(disp, screen, 0, 0); // make sure we have a centered window
} else
result = XGrabPointer(disp, win, False, mask, GrabModeAsync, GrabModeAsync, None, blank_cursor, CurrentTime);
int mask = FocusChangeMask | PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
result = XGrabPointer(disp, win, False, mask, GrabModeAsync, GrabModeAsync, win, blank_cursor, CurrentTime);
XWarpPointer(disp, None, win, 0, 0, 0, 0, current_x, current_y);
XF86VidModeSetViewPort(disp, screen, 0, 0); // make sure we have a centered window
if (result == GrabSuccess)
pointer_grabbed = true;
return result;
@ -141,20 +137,16 @@ void ungrabPointer(void) {
XUngrabPointer(disp, CurrentTime);
}
int updatePointerGrab(JNIEnv *env, jclass clazz) {
if (isFullscreen()) {
if (!pointer_grabbed)
return grabPointer();
} else {
if (isFocused()) {
if (!pointer_grabbed)
return grabPointer();
} else {
if (pointer_grabbed)
ungrabPointer();
}
}
return GrabSuccess;
void acquirePointer(void) {
if (!created)
return;
grabPointer();
}
void releasePointer(void) {
if (!created)
return;
ungrabPointer();
}
/*
@ -180,12 +172,13 @@ JNIEXPORT jboolean JNICALL Java_org_lwjgl_input_Mouse_nCreate
#endif
return JNI_FALSE;
}
if (updatePointerGrab(env, clazz) != GrabSuccess) {
if (grabPointer() != GrabSuccess) {
#ifdef _DEBUG
printf("Could not grab pointer\n");
#endif
return JNI_FALSE;
}
created = true;
return JNI_TRUE;
}
@ -200,6 +193,7 @@ JNIEXPORT void JNICALL Java_org_lwjgl_input_Mouse_nDestroy
if (pointer_grabbed)
ungrabPointer();
XFreeCursor(disp, blank_cursor);
created = false;
}
void handleButtonPress(XButtonEvent *event) {
@ -248,6 +242,8 @@ void handlePointerMotion(XMotionEvent *event) {
void warpPointer(void) {
int i;
if (!pointer_grabbed)
return;
// Reset pointer to middle of screen if inside a certain inner border
if (current_x < POINTER_WARP_BORDER || current_y < POINTER_WARP_BORDER ||
current_x > getWindowWidth() - POINTER_WARP_BORDER || current_y > getWindowHeight() - POINTER_WARP_BORDER) {
@ -282,7 +278,6 @@ void warpPointer(void) {
JNIEXPORT void JNICALL Java_org_lwjgl_input_Mouse_nPoll
(JNIEnv * env, jclass clazz)
{
updatePointerGrab(env, clazz);
handleMessages();
int moved_x = current_x - last_x;
int moved_y = current_y - last_y;
@ -295,17 +290,5 @@ JNIEXPORT void JNICALL Java_org_lwjgl_input_Mouse_nPoll
last_z = current_z;
jbooleanArray buttons_array = (jbooleanArray)env->GetStaticObjectField(clazz, fid_buttons);
env->SetBooleanArrayRegion(buttons_array, 0, NUM_BUTTONS, buttons);
if (isFullscreen())
warpPointer();
}
/*
* Class: org_lwjgl_input_Mouse
* Method: nEnableBuffer
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_org_lwjgl_input_Mouse_nEnableBuffer
(JNIEnv * env, jclass clazz) {
printf("*** FIXME: nEnableBuffer not implemented!\n*");
warpPointer();
}