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wlr_cursor: transform absolute coordinates 

Honor output rotation when processing absolute coordinates. This fixes
touch events on rotated outputs.

Fixes #928
This commit is contained in:
Guido Günther 2018-04-30 16:08:35 +02:00
parent 509d38425c
commit 4efae8c177
1 changed files with 94 additions and 0 deletions
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94
types/wlr_cursor.c
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@ -330,11 +330,75 @@ static void handle_pointer_motion(struct wl_listener *listener, void *data) {
wlr_signal_emit_safe(&device->cursor->events.motion, event);
}
static void apply_output_transform(double *x, double *y,
enum wl_output_transform transform) {
double dx, dy;
double width = 1.0, height = 1.0;
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dx = *x;
dy = *y;
break;
case WL_OUTPUT_TRANSFORM_90:
dx = *y;
dy = width - *x;
break;
case WL_OUTPUT_TRANSFORM_180:
dx = width - *x;
dy = height - *y;
break;
case WL_OUTPUT_TRANSFORM_270:
dx = height - *y;
dy = *x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dx = width - *x;
dy = *y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dx = height - *y;
dy = width - *x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dx = *x;
dy = height - *y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dx = *y;
dy = *x;
break;
}
*x = dx;
*y = dy;
}
static struct wlr_output *get_mapped_output(struct wlr_cursor_device *cursor_device) {
if (cursor_device->mapped_output) {
return cursor_device->mapped_output;
}
struct wlr_cursor *cursor = cursor_device->cursor;
assert(cursor);
if (cursor->state->mapped_output) {
return cursor->state->mapped_output;
}
return NULL;
}
static void handle_pointer_motion_absolute(struct wl_listener *listener,
void *data) {
struct wlr_event_pointer_motion_absolute *event = data;
struct wlr_cursor_device *device =
wl_container_of(listener, device, motion_absolute);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.motion_absolute, event);
}
@ -362,6 +426,12 @@ static void handle_touch_down(struct wl_listener *listener, void *data) {
struct wlr_event_touch_down *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_down);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.touch_down, event);
}
@ -369,6 +439,12 @@ static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct wlr_event_touch_motion *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_motion);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.touch_motion, event);
}
@ -383,6 +459,12 @@ static void handle_tablet_tool_tip(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_tool_tip *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_tip);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.tablet_tool_tip, event);
}
@ -390,6 +472,12 @@ static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
struct wlr_event_tablet_tool_axis *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_axis);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.tablet_tool_axis, event);
}
@ -406,6 +494,12 @@ static void handle_tablet_tool_proximity(struct wl_listener *listener,
struct wlr_event_tablet_tool_proximity *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_proximity);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wlr_signal_emit_safe(&device->cursor->events.tablet_tool_proximity, event);
}