DopeSheet: GPencil-Mode supports Circle and Lasso Select

To get this working the least effort, I've had to expose the helper functions
used by the lasso and circle select keyframe-test callbacks (which are generic)
and expose them for use by the GP keyframe editing code too. Hopefully in time
we clean this all up and just write the code once to operate on "keyframes"

1 files changed, 30 insertions, 0 deletions

diff --git a/source/blender/editors/gpencil/editaction_gpencil.c b/source/blender/editors/gpencil/editaction_gpencil.c
index a49b3362155..738496a67c6 100644
--- a/source/blender/editors/gpencil/editaction_gpencil.c
+++ b/source/blender/editors/gpencil/editaction_gpencil.c
@@ -205,6 +205,36 @@ void ED_gplayer_frames_select_border(bGPDlayer *gpl, float min, float max, short
 	}
 }
 
+/* select the frames in this layer that occur within the lasso/circle region specified */
+void ED_gplayer_frames_select_region(KeyframeEditData *ked, bGPDlayer *gpl, short tool, short select_mode)
+{
+	bGPDframe *gpf;
+	
+	if (gpl == NULL)
+		return;
+	
+	/* only select frames which are within the region */
+	for (gpf = gpl->frames.first; gpf; gpf = gpf->next) {
+		/* construct a dummy point coordinate to do this testing with */
+		float pt[2] = {0};
+		
+		pt[0] = gpf->framenum;
+		pt[1] = ked->channel_y;
+		
+		/* check the necessary regions */
+		if (tool == BEZT_OK_CHANNEL_LASSO) {
+			/* Lasso */	
+			if (keyframe_region_lasso_test(ked->data, pt))
+				gpframe_select(gpf, select_mode);
+		}
+		else if (tool == BEZT_OK_CHANNEL_CIRCLE) {
+			/* Circle */
+			if (keyframe_region_circle_test(ked->data, pt))
+				gpframe_select(gpf, select_mode);
+		}
+	}
+}
+
 /* ***************************************** */
 /* Frame Editing Tools */