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authorPeter Maydell <peter.maydell@linaro.org>2014-06-22 22:03:13 +0100
committerPeter Maydell <peter.maydell@linaro.org>2014-06-23 10:41:36 +0100
commit12379e370f318a9af846f97c00975820241b7e96 (patch)
tree34772d16905a96a47334e9488670a214a0244678
parent5ecaecb53f43f1f3e274c2a98e0cf0fb0a6d734a (diff)
downloadqemu-arm-12379e370f318a9af846f97c00975820241b7e96.tar.gz
ui/cocoa: Fix handling of absolute positioning devices
Fix handling of absolute positioning devices, which were basically unusable for two separate reasons: (1) as soon as you pressed the left mouse button we would call CGAssociateMouseAndMouseCursorPosition(FALSE), which means that the absolute coordinates of the mouse events are never updated (2) we didn't account for MacOSX coordinate origin being bottom left rather than top right, and so all the Y values sent to the guest were inverted We fix (1) by aligning our behaviour with the SDL UI backend for absolute devices: * when the mouse moves into the window we do a grab (which means hiding the host cursor and sending special keys to the guest) * when the mouse moves out of the window we un-grab and fix (2) by doing the correct transformation in the call to qemu_input_queue_abs(). Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--ui/cocoa.m75
1 files changed, 46 insertions, 29 deletions
diff --git a/ui/cocoa.m b/ui/cocoa.m
index 1a626e215f..06951d03f0 100644
--- a/ui/cocoa.m
+++ b/ui/cocoa.m
@@ -256,7 +256,7 @@ static int cocoa_keycode_to_qemu(int keycode)
BOOL isMouseGrabbed;
BOOL isFullscreen;
BOOL isAbsoluteEnabled;
- BOOL isTabletEnabled;
+ BOOL isMouseDeassociated;
}
- (void) switchSurface:(DisplaySurface *)surface;
- (void) grabMouse;
@@ -264,8 +264,21 @@ static int cocoa_keycode_to_qemu(int keycode)
- (void) toggleFullScreen:(id)sender;
- (void) handleEvent:(NSEvent *)event;
- (void) setAbsoluteEnabled:(BOOL)tIsAbsoluteEnabled;
+/* The state surrounding mouse grabbing is potentially confusing.
+ * isAbsoluteEnabled tracks qemu_input_is_absolute() [ie "is the emulated
+ * pointing device an absolute-position one?"], but is only updated on
+ * next refresh.
+ * isMouseGrabbed tracks whether GUI events are directed to the guest;
+ * it controls whether special keys like Cmd get sent to the guest,
+ * and whether we capture the mouse when in non-absolute mode.
+ * isMouseDeassociated tracks whether we've told MacOSX to disassociate
+ * the mouse and mouse cursor position by calling
+ * CGAssociateMouseAndMouseCursorPosition(FALSE)
+ * (which basically happens if we grab in non-absolute mode).
+ */
- (BOOL) isMouseGrabbed;
- (BOOL) isAbsoluteEnabled;
+- (BOOL) isMouseDeassociated;
- (float) cdx;
- (float) cdy;
- (QEMUScreen) gscreen;
@@ -613,14 +626,12 @@ QemuCocoaView *cocoaView;
case NSMouseMoved:
if (isAbsoluteEnabled) {
if (![self screenContainsPoint:p] || ![[self window] isKeyWindow]) {
- if (isTabletEnabled) { // if we leave the window, deactivate the tablet
- [NSCursor unhide];
- isTabletEnabled = FALSE;
+ if (isMouseGrabbed) {
+ [self ungrabMouse];
}
} else {
- if (!isTabletEnabled) { // if we enter the window, activate the tablet
- [NSCursor hide];
- isTabletEnabled = TRUE;
+ if (!isMouseGrabbed) {
+ [self grabMouse];
}
}
}
@@ -659,16 +670,9 @@ QemuCocoaView *cocoaView;
mouse_event = true;
break;
case NSLeftMouseUp:
- if (isTabletEnabled) {
- mouse_event = true;
- } else if (!isMouseGrabbed) {
- if ([self screenContainsPoint:p]) {
- [self grabMouse];
- } else {
- [NSApp sendEvent:event];
- }
- } else {
- mouse_event = true;
+ mouse_event = true;
+ if (!isMouseGrabbed && [self screenContainsPoint:p]) {
+ [self grabMouse];
}
break;
case NSRightMouseUp:
@@ -678,13 +682,11 @@ QemuCocoaView *cocoaView;
mouse_event = true;
break;
case NSScrollWheel:
- if (isTabletEnabled || isMouseGrabbed) {
+ if (isMouseGrabbed) {
buttons |= ([event deltaY] < 0) ?
MOUSE_EVENT_WHEELUP : MOUSE_EVENT_WHEELDN;
- mouse_event = true;
- } else {
- [NSApp sendEvent:event];
}
+ mouse_event = true;
break;
default:
[NSApp sendEvent:event];
@@ -702,12 +704,20 @@ QemuCocoaView *cocoaView;
qemu_input_update_buttons(dcl->con, bmap, last_buttons, buttons);
last_buttons = buttons;
}
- if (isTabletEnabled) {
- qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, p.x, screen.width);
- qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, p.y, screen.height);
- } else if (isMouseGrabbed) {
- qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, (int)[event deltaX]);
- qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, (int)[event deltaY]);
+ if (isMouseGrabbed) {
+ if (isAbsoluteEnabled) {
+ /* Note that the origin for Cocoa mouse coords is bottom left, not top left.
+ * The check on screenContainsPoint is to avoid sending out of range values for
+ * clicks in the titlebar.
+ */
+ if ([self screenContainsPoint:p]) {
+ qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, p.x, screen.width);
+ qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, screen.height - p.y, screen.height);
+ }
+ } else {
+ qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, (int)[event deltaX]);
+ qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, (int)[event deltaY]);
+ }
} else {
[NSApp sendEvent:event];
}
@@ -726,7 +736,10 @@ QemuCocoaView *cocoaView;
[normalWindow setTitle:@"QEMU - (Press ctrl + alt to release Mouse)"];
}
[NSCursor hide];
- CGAssociateMouseAndMouseCursorPosition(FALSE);
+ if (!isAbsoluteEnabled) {
+ isMouseDeassociated = TRUE;
+ CGAssociateMouseAndMouseCursorPosition(FALSE);
+ }
isMouseGrabbed = TRUE; // while isMouseGrabbed = TRUE, QemuCocoaApp sends all events to [cocoaView handleEvent:]
}
@@ -741,13 +754,17 @@ QemuCocoaView *cocoaView;
[normalWindow setTitle:@"QEMU"];
}
[NSCursor unhide];
- CGAssociateMouseAndMouseCursorPosition(TRUE);
+ if (isMouseDeassociated) {
+ CGAssociateMouseAndMouseCursorPosition(TRUE);
+ isMouseDeassociated = FALSE;
+ }
isMouseGrabbed = FALSE;
}
- (void) setAbsoluteEnabled:(BOOL)tIsAbsoluteEnabled {isAbsoluteEnabled = tIsAbsoluteEnabled;}
- (BOOL) isMouseGrabbed {return isMouseGrabbed;}
- (BOOL) isAbsoluteEnabled {return isAbsoluteEnabled;}
+- (BOOL) isMouseDeassociated {return isMouseDeassociated;}
- (float) cdx {return cdx;}
- (float) cdy {return cdy;}
- (QEMUScreen) gscreen {return screen;}