GP: box/lasso support for select-operations

This adds support for more adbvanced select operations
matching 3D view select operators.

Also de-duplicate box/lasso select code.

2 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_gpencil.h b/source/blender/blenkernel/BKE_gpencil.h
index 1debfecc895..14c4e8fec32 100644
--- a/source/blender/blenkernel/BKE_gpencil.h
+++ b/source/blender/blenkernel/BKE_gpencil.h
@@ -149,6 +149,8 @@ bool BKE_gpencil_data_minmax(
 bool BKE_gpencil_stroke_minmax(
 	const struct bGPDstroke *gps, const bool use_select,
 	float r_min[3], float r_max[3]);
+bool BKE_gpencil_stroke_select_check(
+	const struct bGPDstroke *gps);
 
 struct BoundBox *BKE_gpencil_boundbox_get(struct Object *ob);
 void BKE_gpencil_centroid_3D(struct bGPdata *gpd, float r_centroid[3]);
diff --git a/source/blender/blenkernel/intern/gpencil.c b/source/blender/blenkernel/intern/gpencil.c
index e6d5514a0f1..ed551b1c109 100644
--- a/source/blender/blenkernel/intern/gpencil.c
+++ b/source/blender/blenkernel/intern/gpencil.c
@@ -1133,6 +1133,19 @@ bool BKE_gpencil_data_minmax(Object *ob, const bGPdata *gpd, float r_min[3], flo
 	return changed;
 }
 
+bool BKE_gpencil_stroke_select_check(
+        const bGPDstroke *gps)
+{
+	const bGPDspoint *pt;
+	int i;
+	for (i = 0, pt = gps->points; i < gps->totpoints; i++, pt++) {
+		if (pt->flag & GP_SPOINT_SELECT) {
+			return true;
+		}
+	}
+	return false;
+}
+
 /* compute center of bounding box */
 void BKE_gpencil_centroid_3D(bGPdata *gpd, float r_centroid[3])
 {