C++ (Cpp) zoom_area_center_from_pointer Examples

Example #1

File: zoom.c Project: bpeel/weston

WL_EXPORT void
weston_output_update_zoom(struct weston_output *output, uint32_t type)
{
	struct weston_seat *seat = weston_zoom_pick_seat(output->compositor);
	wl_fixed_t x = seat->pointer->x;
	wl_fixed_t y = seat->pointer->y;

	zoom_area_center_from_pointer(output, &x, &y);

	if (type == ZOOM_FOCUS_POINTER) {
		if (wl_list_empty(&output->zoom.animation_xy.link)) {
			output->zoom.current.x = seat->pointer->x;
			output->zoom.current.y = seat->pointer->y;
		} else {
			output->zoom.to.x = x;
			output->zoom.to.y = y;
		}
	}

	if (type == ZOOM_FOCUS_TEXT) {
		if (wl_list_empty(&output->zoom.animation_xy.link)) {
			output->zoom.current.x = output->zoom.text_cursor.x;
			output->zoom.current.y = output->zoom.text_cursor.y;
		} else {
			output->zoom.to.x = output->zoom.text_cursor.x;
			output->zoom.to.y = output->zoom.text_cursor.y;
		}
	}

	weston_zoom_transition(output, type, x, y);
	weston_output_update_zoom_transform(output);
}

Example #2

File: zoom.c Project: bpeel/weston

static void
weston_output_update_zoom_transform(struct weston_output *output)
{
	uint32_t type = output->zoom.type;
	float global_x, global_y;
	wl_fixed_t x = output->zoom.current.x;
	wl_fixed_t y = output->zoom.current.y;
	float trans_min, trans_max;
	float ratio, level;

	level = output->zoom.spring_z.current;
	ratio = 1 / level;

	if (!output->zoom.active || level > output->zoom.max_level ||
	    level == 0.0f)
		return;

	if (type == ZOOM_FOCUS_POINTER &&
			wl_list_empty(&output->zoom.animation_xy.link))
		zoom_area_center_from_pointer(output, &x, &y);

	global_x = wl_fixed_to_double(x);
	global_y = wl_fixed_to_double(y);

	output->zoom.trans_x =
		((((global_x - output->x) / output->width) *
		(level * 2)) - level) * ratio;
	output->zoom.trans_y =
		((((global_y - output->y) / output->height) *
		(level * 2)) - level) * ratio;

	weston_zoom_apply_output_transform(output, &output->zoom.trans_x,
						   &output->zoom.trans_y);

	trans_max = level * 2 - level;
	trans_min = -trans_max;

	/* Clip zoom area to output */
	if (output->zoom.trans_x > trans_max)
		output->zoom.trans_x = trans_max;
	else if (output->zoom.trans_x < trans_min)
		output->zoom.trans_x = trans_min;
	if (output->zoom.trans_y > trans_max)
		output->zoom.trans_y = trans_max;
	else if (output->zoom.trans_y < trans_min)
		output->zoom.trans_y = trans_min;
}

Example #3

File: zoom.c Project: Nealefelaen/weston-rift

WL_EXPORT void
weston_output_update_zoom(struct weston_output *output)
{
	struct weston_seat *seat = weston_zoom_pick_seat(output->compositor);
	wl_fixed_t x = seat->pointer->x;
	wl_fixed_t y = seat->pointer->y;

	zoom_area_center_from_pointer(output, &x, &y);

	if (wl_list_empty(&output->zoom.animation_xy.link)) {
		output->zoom.current.x = seat->pointer->x;
		output->zoom.current.y = seat->pointer->y;
	} else {
		output->zoom.to.x = x;
		output->zoom.to.y = y;
	}

	weston_zoom_transition(output, x, y);
	weston_output_update_zoom_transform(output);
}