[Bf-blender-cvs] [a70f37bd8a0] master: Fix T89952: GPencil channel box selection offset

[Falk David]

Commit: a70f37bd8a062f2b5c932c6bc8cff84919ca4d43
Author: Falk David
Date:   Thu Jul 29 10:38:54 2021 +0200
Branches: master
https://developer.blender.org/rBa70f37bd8a062f2b5c932c6bc8cff84919ca4d43

Fix T89952: GPencil channel box selection offset

The channel box selection was offset for grease pencil layers.

This is a proposed fix by @yann-lty

Before:
{F10227973}

After:
{F10227974}

Reviewed By: #grease_pencil, antoniov

Maniphest Tasks: T89952

Differential Revision: https://developer.blender.org/D11962

===================================================================

M	source/blender/editors/animation/anim_channels_edit.c

===================================================================

diff --git a/source/blender/editors/animation/anim_channels_edit.c b/source/blender/editors/animation/anim_channels_edit.c
index c6c7cc4adb0..afbd9b2c92d 100644
--- a/source/blender/editors/animation/anim_channels_edit.c
+++ b/source/blender/editors/animation/anim_channels_edit.c
@@ -2683,8 +2683,9 @@ static void box_select_anim_channels(bAnimContext *ac, rcti *rect, short selectm
   /* loop over data, doing box select */
   for (ale = anim_data.first; ale; ale = ale->next) {
     float ymin;
-    /* Skip grease pencil datablock. Only use grease pencil layers. */
+
     if (ale->type == ANIMTYPE_GPDATABLOCK) {
+      ymax -= ACHANNEL_STEP(ac);
       continue;
     }