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ui: Support non-zero minimum values for absolute input axes

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This patch refactors ui/input.c to support absolute axis
minimum values other than 0. All dependent calls to qemu_input_queue_abs
have been updated to explicitly supply 0 as the axis minimum value.

Signed-off-by: Philippe Voinov <philippevoinov@gmail.com>
Message-id: 20170505133952.29885-1-philippevoinov@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Philippe Voinov 2017-05-05 15:39:52 +02:00 committed by Gerd Hoffmann
parent 76d20ea0f1
commit 9cfa7ab939
9 changed files with 45 additions and 27 deletions
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6
hw/input/virtio-input-hid.c
View File

@ -484,12 +484,14 @@ static struct virtio_input_config virtio_tablet_config[] = {
.select = VIRTIO_INPUT_CFG_ABS_INFO,
.subsel = ABS_X,
.size = sizeof(virtio_input_absinfo),
.u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
.u.abs.min = const_le32(INPUT_EVENT_ABS_MIN),
.u.abs.max = const_le32(INPUT_EVENT_ABS_MAX),
},{
.select = VIRTIO_INPUT_CFG_ABS_INFO,
.subsel = ABS_Y,
.size = sizeof(virtio_input_absinfo),
.u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
.u.abs.min = const_le32(INPUT_EVENT_ABS_MIN),
.u.abs.max = const_le32(INPUT_EVENT_ABS_MAX),
},
{ /* end of list */ },
};

11
include/ui/input.h
View File

@ -8,7 +8,8 @@
#define INPUT_EVENT_MASK_REL (1<<INPUT_EVENT_KIND_REL)
#define INPUT_EVENT_MASK_ABS (1<<INPUT_EVENT_KIND_ABS)
#define INPUT_EVENT_ABS_SIZE 0x8000
#define INPUT_EVENT_ABS_MIN 0x0000
#define INPUT_EVENT_ABS_MAX 0x7FFF
typedef struct QemuInputHandler QemuInputHandler;
typedef struct QemuInputHandlerState QemuInputHandlerState;
@ -54,12 +55,14 @@ void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
uint32_t button_old, uint32_t button_new);
bool qemu_input_is_absolute(void);
int qemu_input_scale_axis(int value, int size_in, int size_out);
int qemu_input_scale_axis(int value,
int min_in, int max_in,
int min_out, int max_out);
InputEvent *qemu_input_event_new_move(InputEventKind kind,
InputAxis axis, int value);
void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value);
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis,
int value, int size);
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value,
int min_in, int max_in);
void qemu_input_check_mode_change(void);
void qemu_add_mouse_mode_change_notifier(Notifier *notify);

4
ui/cocoa.m
View File

@ -749,8 +749,8 @@ QemuCocoaView *cocoaView;
* 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);
qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, p.x, 0, screen.width);
qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, screen.height - p.y, 0, screen.height);
}
} else {
qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, (int)[event deltaX]);

4
ui/gtk.c
View File

@ -912,9 +912,9 @@ static gboolean gd_motion_event(GtkWidget *widget, GdkEventMotion *motion,
return TRUE;
}
qemu_input_queue_abs(vc->gfx.dcl.con, INPUT_AXIS_X, x,
surface_width(vc->gfx.ds));
0, surface_width(vc->gfx.ds));
qemu_input_queue_abs(vc->gfx.dcl.con, INPUT_AXIS_Y, y,
surface_height(vc->gfx.ds));
0, surface_height(vc->gfx.ds));
qemu_input_event_sync();
} else if (s->last_set && s->ptr_owner == vc) {
qemu_input_queue_rel(vc->gfx.dcl.con, INPUT_AXIS_X, x - s->last_x);

31
ui/input.c
View File

@ -166,6 +166,11 @@ void qmp_input_send_event(bool has_device, const char *device,
qemu_input_event_sync();
}
static int qemu_input_transform_invert_abs_value(int value)
{
return (int64_t)INPUT_EVENT_ABS_MAX - value + INPUT_EVENT_ABS_MIN;
}
static void qemu_input_transform_abs_rotate(InputEvent *evt)
{
InputMoveEvent *move = evt->u.abs.data;
@ -175,16 +180,16 @@ static void qemu_input_transform_abs_rotate(InputEvent *evt)
move->axis = INPUT_AXIS_Y;
} else if (move->axis == INPUT_AXIS_Y) {
move->axis = INPUT_AXIS_X;
move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
move->value = qemu_input_transform_invert_abs_value(move->value);
}
break;
case 180:
move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
move->value = qemu_input_transform_invert_abs_value(move->value);
break;
case 270:
if (move->axis == INPUT_AXIS_X) {
move->axis = INPUT_AXIS_Y;
move->value = INPUT_EVENT_ABS_SIZE - 1 - move->value;
move->value = qemu_input_transform_invert_abs_value(move->value);
} else if (move->axis == INPUT_AXIS_Y) {
move->axis = INPUT_AXIS_X;
}
@ -467,12 +472,17 @@ bool qemu_input_is_absolute(void)
return (s != NULL) && (s->handler->mask & INPUT_EVENT_MASK_ABS);
}
int qemu_input_scale_axis(int value, int size_in, int size_out)
int qemu_input_scale_axis(int value,
int min_in, int max_in,
int min_out, int max_out)
{
if (size_in < 2) {
return size_out / 2;
int64_t range_in = (int64_t)max_in - min_in;
int64_t range_out = (int64_t)max_out - min_out;
if (range_in < 1) {
return min_out + range_out / 2;
}
return (int64_t)value * (size_out - 1) / (size_in - 1);
return ((int64_t)value - min_in) * range_out / range_in + min_out;
}
InputEvent *qemu_input_event_new_move(InputEventKind kind,
@ -496,10 +506,13 @@ void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value)
qapi_free_InputEvent(evt);
}
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value, int size)
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value,
int min_in, int max_in)
{
InputEvent *evt;
int scaled = qemu_input_scale_axis(value, size, INPUT_EVENT_ABS_SIZE);
int scaled = qemu_input_scale_axis(value, min_in, max_in,
INPUT_EVENT_ABS_MIN,
INPUT_EVENT_ABS_MAX);
evt = qemu_input_event_new_move(INPUT_EVENT_KIND_ABS, axis, scaled);
qemu_input_event_send(src, evt);
qapi_free_InputEvent(evt);

4
ui/sdl.c
View File

@ -490,9 +490,9 @@ static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
if (qemu_input_is_absolute()) {
qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
real_screen->w);
0, real_screen->w);
qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
real_screen->h);
0, real_screen->h);
} else {
if (guest_cursor) {
x -= guest_x;

4
ui/sdl2.c
View File

@ -298,8 +298,8 @@ static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
}
}
}
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X, off_x + x, max_w);
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y, off_y + y, max_h);
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X, off_x + x, 0, max_w);
qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y, off_y + y, 0, max_h);
} else {
if (guest_cursor) {
x -= guest_x;

4
ui/spice-input.c
View File

@ -172,8 +172,8 @@ static void tablet_position(SpiceTabletInstance* sin, int x, int y,
QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
spice_update_buttons(pointer, 0, buttons_state);
qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, pointer->width);
qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, pointer->height);
qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, 0, pointer->width);
qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, 0, pointer->height);
qemu_input_event_sync();
}

4
ui/vnc.c
View File

@ -1556,8 +1556,8 @@ static void pointer_event(VncState *vs, int button_mask, int x, int y)
}
if (vs->absolute) {
qemu_input_queue_abs(con, INPUT_AXIS_X, x, width);
qemu_input_queue_abs(con, INPUT_AXIS_Y, y, height);
qemu_input_queue_abs(con, INPUT_AXIS_X, x, 0, width);
qemu_input_queue_abs(con, INPUT_AXIS_Y, y, 0, height);
} else if (vnc_has_feature(vs, VNC_FEATURE_POINTER_TYPE_CHANGE)) {
qemu_input_queue_rel(con, INPUT_AXIS_X, x - 0x7FFF);
qemu_input_queue_rel(con, INPUT_AXIS_Y, y - 0x7FFF);