From 4131b5595d97a290376e2fa832eead445eb9b4ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Fern=C3=A1ndez?= <paziusss@gmail.com>
Date: Tue, 29 Jan 2019 19:55:19 +0100
Subject: [PATCH] add basic support for full eink updates

---
 ffi/framebuffer_android.lua | 37 ++++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/ffi/framebuffer_android.lua b/ffi/framebuffer_android.lua
index 260c9db96..1ba11ac45 100644
--- a/ffi/framebuffer_android.lua
+++ b/ffi/framebuffer_android.lua
@@ -3,6 +3,16 @@ local android = require("android")
 local BB = require("ffi/blitbuffer")
 local C = ffi.C
 
+local has_eink_screen = android.isEink()
+local full, partial, a2, auto = 1, 2, 3, 4 -- luacheck: ignore
+
+local function update_eink(mode)
+    if has_eink_screen then
+	android.LOGV("requesting eink update " .. mode)
+        android.einkUpdate(mode)
+    end
+end
+
 local framebuffer = {}
 
 function framebuffer:init()
@@ -18,7 +28,7 @@ function framebuffer:init()
     framebuffer.parent.init(self)
 end
 
-function framebuffer:refreshFullImp()
+function framebuffer:_updateWindow()
     if android.app.window == nil then
         android.LOGW("cannot blit: no window")
         return
@@ -60,4 +70,29 @@ function framebuffer:refreshFullImp()
     android.lib.ANativeWindow_unlockAndPost(android.app.window);
 end
 
+function framebuffer:refreshFullImp()
+    self:_updateWindow()
+    update_eink(full)
+end
+
+function framebuffer:refreshPartialImp()
+    self:_updateWindow()
+end
+
+function framebuffer:refreshFlashPartialImp()
+    self:_updateWindow()
+end
+
+function framebuffer:refreshUIImp()
+    self:_updateWindow()
+end
+
+function framebuffer:refreshFlashUIImp()
+    self:_updateWindow()
+end
+
+function framebuffer:refreshFastImp()
+    self:_updateWindow()
+end
+
 return require("ffi/framebuffer"):extend(framebuffer)