'--udev=[Listen for notifications on the given seat]:seat:__all_seats' \
'--apply-to=[Apply configuration options where the device name matches the pattern]:pattern' \
'--disable-sendevents=[Disable send-events option for the devices matching the pattern]:pattern' \
+ '--set-area=[Set the desired area as "x1/y1 x2/y2" (within [0.0, 1.0]) ]' \
'--set-click-method=[Set the desired click method]:click-method:(none clickfinger buttonareas)' \
'--set-clickfinger-map=[Set button mapping for clickfinger]:tap-map:(( \
lrm\:2-fingers\ right-click\ /\ 3-fingers\ middle-click \
before the maximum hardware-supported pressure is reached.
See :ref:`tablet-pressure-range` for more info.
+
+------------------------------------------------------------------------------
+Area configuration
+------------------------------------------------------------------------------
+
+Area configuration is available for some indirect input devices such as
+graphics tablets. This configuration allows reducing the active area of
+such a device to a subset of the physically possible area.
+
+An example use-case for this is to match the aspect ratio of the device to that
+of the screen.
+
+See :ref:`tablet-area` for more info.
'svg/software-buttons-thumbpress.svg',
'svg/software-buttons-visualized.svg',
'svg/swipe-gestures.svg',
+ 'svg/tablet-area.svg',
'svg/tablet-axes.svg',
'svg/tablet-cintiq24hd-modes.svg',
'svg/tablet-interfaces.svg',
--- /dev/null
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libinput uses the **libinput_device_group** to decide on touch arbitration
and automatically discards touch events whenever a tool is in proximity.
The exact behavior is device-dependent.
+
+.. _tablet-area:
+
+------------------------------------------------------------------------------
+Tablet area
+------------------------------------------------------------------------------
+
+External tablet devices such as e.g. the Wacom Intuos series can be configured
+to reduce the available logical input area. Typically the logical input area
+is equivalent to the physical input area but it can be reduced with the
+**libinput_device_config_area_set_rectangle()** call. Once reduced, input
+events outside the logical input area are ignored and the logical input area
+acts as if it represented the extents of the physical tablet.
+
+.. figure:: tablet-area.svg
+ :align: center
+
+ Tablet area configuration example
+
+In the image above, the area is set to the rectangle 0.25/0.25 to 0.5/0.75.
+Even though the tool is roughly at the physical position ``0.5 * width`` and
+``0.75 * height``, the return values of
+**libinput_event_tablet_tool_get_x_transformed()** and
+**libinput_event_tablet_tool_get_y_transformed()** would be close to the
+maximum provided in this call.
+
+The size of the tablet reported by **libinput_device_get_size()** always reflects
+the physical area, not the logical area.
float matrix[6]);
};
+struct libinput_device_config_area {
+ int (*has_rectangle)(struct libinput_device *device);
+ enum libinput_config_status (*set_rectangle)(struct libinput_device *device,
+ const struct libinput_config_area_rectangle *rectangle);
+ struct libinput_config_area_rectangle (*get_rectangle)(struct libinput_device *device);
+ struct libinput_config_area_rectangle (*get_default_rectangle)(struct libinput_device *device);
+};
+
struct libinput_device_config_send_events {
uint32_t (*get_modes)(struct libinput_device *device);
enum libinput_config_status (*set_mode)(struct libinput_device *device,
struct libinput_device_config {
struct libinput_device_config_tap *tap;
struct libinput_device_config_calibration *calibration;
+ struct libinput_device_config_area *area;
struct libinput_device_config_send_events *sendevents;
struct libinput_device_config_accel *accel;
struct libinput_device_config_natural_scroll *natural_scroll;
return device->config.calibration->get_default_matrix(device, matrix);
}
+LIBINPUT_EXPORT int
+libinput_device_config_area_has_rectangle(struct libinput_device *device)
+{
+ return device->config.area ?
+ device->config.area->has_rectangle(device) : 0;
+}
+
+LIBINPUT_EXPORT enum libinput_config_status
+libinput_device_config_area_set_rectangle(struct libinput_device *device,
+ const struct libinput_config_area_rectangle *rectangle)
+{
+ if (!libinput_device_config_area_has_rectangle(device))
+ return LIBINPUT_CONFIG_STATUS_UNSUPPORTED;
+
+ return device->config.area->set_rectangle(device, rectangle);
+}
+
+LIBINPUT_EXPORT struct libinput_config_area_rectangle
+libinput_device_config_area_get_rectangle(struct libinput_device *device)
+{
+ struct libinput_config_area_rectangle rect = { 0.0, 0.0, 1.0, 1.0 };
+
+ if (!libinput_device_config_area_has_rectangle(device))
+ return rect;
+
+ return device->config.area->get_rectangle(device);
+}
+
+LIBINPUT_EXPORT struct libinput_config_area_rectangle
+libinput_device_config_area_get_default_rectangle(struct libinput_device *device)
+{
+ struct libinput_config_area_rectangle rect = { 0.0, 0.0, 1.0, 1.0 };
+
+ if (!libinput_device_config_area_has_rectangle(device))
+ return rect;
+
+ return device->config.area->get_default_rectangle(device);
+}
+
LIBINPUT_EXPORT uint32_t
libinput_device_config_send_events_get_modes(struct libinput_device *device)
{
* libinput_event_tablet_tool_get_x_transformed() for transforming the axis
* value into a different coordinate space.
*
+ * If an area is defined for this device, the coordinate is in mm from
+ * the top left corner of the area. See
+ * libinput_device_config_area_set_rectangle() for details.
+ *
* @note On some devices, returned value may be negative or larger than the
* width of the device. See the libinput documentation for more details.
*
* libinput_event_tablet_tool_get_y_transformed() for transforming the axis
* value into a different coordinate space.
*
+ * If an area is defined for this device, the coordinate is in mm from
+ * the top left corner of the area. See
+ * libinput_device_config_area_set_rectangle() for details.
+ *
* @note On some devices, returned value may be negative or larger than the
* width of the device. See the libinput documentation for more details.
*
libinput_device_config_calibration_get_default_matrix(struct libinput_device *device,
float matrix[6]);
+/**
+ * @ingroup config
+ *
+ * Describes a rectangle to configure a device's area, see
+ * libinput_device_config_area_set_rectangle().
+ *
+ * This struct describes a rectangle via the upper left points (x1, y1)
+ * and the lower right point (x2, y2).
+ *
+ * All arguments are normalized to the range [0.0, 1.0] to represent the
+ * corresponding proportion of the device's width and height, respectively.
+ * A rectangle covering the whole device thus comprises of the points
+ * (0.0, 0.0) and (1.0, 1.0).
+ *
+ * The conditions x1 < x2 and y1 < y2 must be true.
+ */
+struct libinput_config_area_rectangle {
+ double x1;
+ double y1;
+ double x2;
+ double y2;
+};
+
+/**
+ * @ingroup config
+ *
+ * Check if the device can change its logical input area via a rectangle.
+ *
+ * @param device The device to check
+ * @return Non-zero if the device can be calibrated, zero otherwise.
+ *
+ * @see libinput_device_config_area_set_rectangle
+ * @see libinput_device_config_area_get_rectangle
+ * @see libinput_device_config_area_get_default_rectangle
+ */
+int
+libinput_device_config_area_has_rectangle(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Set the given rectangle as the logical input area of this device.
+ * Future interactions by a tablet tool on this devices are scaled
+ * to only consider events within this logical input area - as if the
+ * logical input area were the available physical area.
+ *
+ * The coordinates of the rectangle represent the proportion of the
+ * available maximum physical area, normalized to the range [0.0, 1.0].
+ * For example, a rectangle with the two points 0.25, 0.5, 0.75, 1.0
+ * adds a 25% dead zone to the left and right and a 50% dead zone on
+ * the top:
+ *
+ * @code
+ * +----------------------------------+
+ * | |
+ * | 50% |
+ * | |
+ * | +-----------------+ |
+ * | | | |
+ * | 25% | | 25% |
+ * | | | |
+ * +--------+-----------------+-------+
+ * @endcode
+ *
+ * The area applies in the tablet's current logical rotation, i.e. the above
+ * example is always at the bottom of the tablet.
+ *
+ * Once applied, the logical area's top-left coordinate (in the current logical
+ * rotation) becomes the new offset (0/0) and the return values of
+ * libinput_event_tablet_tool_get_x() and libinput_event_tablet_tool_get_y()
+ * are in relation to this new offset.
+ *
+ * Likewise, libinput_event_tablet_tool_get_x_transformed() and
+ * libinput_event_tablet_tool_get_y_transformed() represent the value scaled
+ * into the configured logical area.
+ *
+ * The return value of libinput_device_get_size() is not affected by the
+ * configured area.
+ *
+ * Changing the area may not take effect immediately, the device may wait until
+ * it is in a neutral state before applying any changes.
+ *
+ * @param device The device to check
+ * @param rect The intended rectangle
+ * @return A config status code. Setting the area on a device that does not
+ * support area rectangles always fails with @ref LIBINPUT_CONFIG_STATUS_UNSUPPORTED.
+ *
+ * @see libinput_device_config_area_has_rectangle
+ * @see libinput_device_config_area_get_rectangle
+ * @see libinput_device_config_area_get_default_rectangle
+ */
+enum libinput_config_status
+libinput_device_config_area_set_rectangle(struct libinput_device *device,
+ const struct libinput_config_area_rectangle *rect);
+
+/**
+ * @ingroup config
+ *
+ * Return the current area rectangle for this device.
+ *
+ * The return value for a device that does not support area rectangles is a
+ * rectangle with the points 0/0 and 1/1.
+ *
+ * @note It is an application bug to call this function for devices where
+ * libinput_device_config_area_has_rectangle() returns 0.
+ *
+ * @param device The device to check
+ * @return The current area rectangle
+ *
+ * @see libinput_device_config_area_has_rectangle
+ * @see libinput_device_config_area_set_rectangle
+ * @see libinput_device_config_area_get_default_rectangle
+ */
+struct libinput_config_area_rectangle
+libinput_device_config_area_get_rectangle(struct libinput_device *device);
+
+/**
+ * @ingroup config
+ *
+ * Return the default area rectangle for this device.
+ *
+ * The return value for a device that does not support area rectangles is a
+ * rectangle with the points 0/0 and 1/1.
+ *
+ * @note It is an application bug to call this function for devices where
+ * libinput_device_config_area_has_rectangle() returns 0.
+ *
+ * @param device The device to check
+ * @return The default area rectangle
+ *
+ * @see libinput_device_config_area_has_rectangle
+ * @see libinput_device_config_area_set_rectangle
+ * @see libinput_device_config_area_get_rectangle
+ */
+struct libinput_config_area_rectangle
+libinput_device_config_area_get_default_rectangle(struct libinput_device *device);
+
/**
* @ingroup config
*
libinput_tablet_tool_config_pressure_range_get_default_minimum;
libinput_tablet_tool_config_pressure_range_get_default_maximum;
} LIBINPUT_1.23;
+
+LIBINPUT_1.27 {
+ libinput_device_config_area_has_rectangle;
+ libinput_device_config_area_set_rectangle;
+ libinput_device_config_area_get_rectangle;
+ libinput_device_config_area_get_default_rectangle;
+} LIBINPUT_1.26;
.B \-\-enable\-tap|\-\-disable\-tap
Enable or disable tap-to-click
.TP 8
+.B \-\-set\-area="x1/y1 x2/y2"
+Set the tablet area to the rectangle described by the two points x1/y1 and x2/y2. All
+coordinates must be in the range [0.0, 1.0].
+.TP 8
.B \-\-set\-calibration="1.0 0.0 0.0 0.0 1.0 0.0"
Set the first 6 elements of a 3x3 matrix to use for calibration. The third row of the
matrix is always "0.0 0.0 0.1".
options->pressure_range[1] = 1.0;
options->calibration[0] = 1.0;
options->calibration[4] = 1.0;
+ options->area.x1 = 0.0;
+ options->area.y1 = 0.0;
+ options->area.x2 = 1.0;
+ options->area.y2 = 1.0;
}
int
options->calibration[i] = matrix[i];
free(matrix);
break;
+ }
+ case OPT_AREA: {
+ if (!optarg)
+ return 1;
+
+ double x1, x2, y1, y2;
+
+ if (sscanf(optarg, "%lf/%lf %lf/%lf", &x1, &y1, &x2, &y2) != 4) {
+ fprintf(stderr, "Invalid --set-area values\n");
+ return 1;
+ }
+ options->area.x1 = x1;
+ options->area.y1 = y1;
+ options->area.x2 = x2;
+ options->area.y2 = y2;
+ break;
}
}
return 0;
if (libinput_device_config_calibration_has_matrix(device))
libinput_device_config_calibration_set_matrix(device, options->calibration);
+
+ if (libinput_device_config_area_has_rectangle(device))
+ libinput_device_config_area_set_rectangle(device, &options->area);
}
void
OPT_ROTATION_ANGLE,
OPT_PRESSURE_RANGE,
OPT_CALIBRATION,
+ OPT_AREA,
};
#define CONFIGURATION_OPTIONS \
{ "set-custom-type", required_argument, 0, OPT_CUSTOM_TYPE },\
{ "set-rotation-angle", required_argument, 0, OPT_ROTATION_ANGLE }, \
{ "set-pressure-range", required_argument, 0, OPT_PRESSURE_RANGE }, \
- { "set-calibration", required_argument, 0, OPT_CALIBRATION }
+ { "set-calibration", required_argument, 0, OPT_CALIBRATION }, \
+ { "set-area", required_argument, 0, OPT_AREA }
enum tools_backend {
BACKEND_NONE,
unsigned int angle;
double pressure_range[2];
float calibration[6];
+ struct libinput_config_area_rectangle area;
};
void tools_init_options(struct tools_options *options);
projects / platform / upstream / libinput.git / commitdiff
