Feature request:

Expose pressure from event system to python. This will return the tablet
pressure, if a tablet is present, or 1.0 if not.

2 files changed, 22 insertions, 0 deletions

diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index c9d83a02c27..4b30d4b11b9 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -449,6 +449,8 @@ void        WM_event_ndof_rotate_get(const struct wmNDOFMotionData *ndof, float
 float       WM_event_ndof_to_axis_angle(const struct wmNDOFMotionData *ndof, float axis[3]);
 void        WM_event_ndof_to_quat(const struct wmNDOFMotionData *ndof, float q[4]);
 
+float       WM_event_tablet_data(const struct wmEvent *event, int *pen_flip);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index 03f682abc95..15be66da9c2 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -3404,4 +3404,24 @@ void WM_event_ndof_to_quat(const struct wmNDOFMotionData *ndof, float q[4])
 	axis_angle_to_quat(q, axis, angle);
 }
 
+/* if this is a tablet event, return tablet pressure and set *pen_flip
+ * to 1 if the eraser tool is being used, 0 otherwise */
+float WM_event_tablet_data(const wmEvent *event, int *pen_flip)
+{
+	int erasor = 0;
+	float pressure = 1;
+
+	if (event->tablet_data) {
+		wmTabletData *wmtab = event->tablet_data;
+
+		erasor = (wmtab->Active == EVT_TABLET_ERASER);
+		pressure = (wmtab->Active != EVT_TABLET_NONE) ? wmtab->Pressure : 1;
+	}
+
+	if (pen_flip)
+		(*pen_flip) = erasor;
+
+	return pressure;
+}
+
 /** \} */