From 150b9cbcd16f7d505b2753503753ab033099b6b3 Mon Sep 17 00:00:00 2001
From: Bartosz Stebel <bartoszstebel@gmail.com>
Date: Thu, 15 Aug 2024 14:14:57 +0200
Subject: [PATCH] Add support for detecting shift keys alone

Fixes: #187
---
 moderngl_window/context/base/keys.py    | 3 +++
 moderngl_window/context/pygame2/keys.py | 3 +++
 moderngl_window/context/pyglet/keys.py  | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/moderngl_window/context/base/keys.py b/moderngl_window/context/base/keys.py
index 8fad555d..c5e05b78 100644
--- a/moderngl_window/context/base/keys.py
+++ b/moderngl_window/context/base/keys.py
@@ -36,6 +36,9 @@ class BaseKeys:
     RIGHT: Any = "undefined"
     UP: Any = "undefined"
     DOWN: Any = "undefined"
+    LEFT_SHIFT: Any = "undefined"
+    RIGHT_SHIFT: Any = "undefined"
+    LEFT_CTRL: Any = "undefined"
 
     TAB: Any = "undefined"
     COMMA: Any = "undefined"
diff --git a/moderngl_window/context/pygame2/keys.py b/moderngl_window/context/pygame2/keys.py
index 737256dc..5094ac7d 100644
--- a/moderngl_window/context/pygame2/keys.py
+++ b/moderngl_window/context/pygame2/keys.py
@@ -21,6 +21,9 @@ class Keys(BaseKeys):
     RIGHT = pygame.K_RIGHT
     UP = pygame.K_UP
     DOWN = pygame.K_DOWN
+    LEFT_SHIFT = pygame.K_LSHIFT
+    RIGHT_SHIFT = pygame.K_RSHIFT
+    LEFT_CTRL = pygame.K_LCTRL
 
     TAB = pygame.K_TAB
     COMMA = pygame.K_COMMA
diff --git a/moderngl_window/context/pyglet/keys.py b/moderngl_window/context/pyglet/keys.py
index 399e1b0d..62f44b18 100644
--- a/moderngl_window/context/pyglet/keys.py
+++ b/moderngl_window/context/pyglet/keys.py
@@ -28,6 +28,9 @@ class Keys(BaseKeys):
     RIGHT = key.RIGHT
     UP = key.UP
     DOWN = key.DOWN
+    LEFT_SHIFT = key.LSHIFT
+    RIGHT_SHIFT = key.RSHIFT
+    LEFT_CTRL = key.LCTRL
 
     TAB = key.TAB
     COMMA = key.COMMA