Misc. minor fixes (#4080)

* Unbreak dropbear after #4077
* Move the Kindle SO check to init
* Various virtual keyboard fixes to eradicate the remaining refresh conflicts (i.e., tearing artifacts), no matter the user's settings. (re #4069, re #3130).

frontend/device/kindle/device.lua

@@ -16,22 +16,6 @@ local function kindleEnableWifi(toggle)
     end
 end
 
-
-local Kindle = Generic:new{
-    model = "Kindle",
-    isKindle = yes,
-}
-
-function Kindle:initNetworkManager(NetworkMgr)
-    NetworkMgr.turnOnWifi = function()
-        kindleEnableWifi(1)
-    end
-
-    NetworkMgr.turnOffWifi = function()
-        kindleEnableWifi(0)
-    end
-end
-
 --[[
 Test if a kindle device has Special Offers
 --]]
@@ -49,6 +33,10 @@ local function isSpecialOffers()
     end
     local is_so
     local loaded_blanket_modules = lipc_handle:get_string_property("com.lab126.blanket", "load")
+    if not loaded_blanket_modules then
+        logger.warn("could not get lipc property")
+        return true
+    end
     if string.find(loaded_blanket_modules, "ad_screensaver") then
         is_so = true
     else
@@ -58,8 +46,25 @@ local function isSpecialOffers()
     return is_so
 end
 
+local Kindle = Generic:new{
+    model = "Kindle",
+    isKindle = yes,
+    -- NOTE: We can cheat by adding a platform-specific entry here, because the only code that will check for this is here.
+    isSpecialOffers = isSpecialOffers(),
+}
+
+function Kindle:initNetworkManager(NetworkMgr)
+    NetworkMgr.turnOnWifi = function()
+        kindleEnableWifi(1)
+    end
+
+    NetworkMgr.turnOffWifi = function()
+        kindleEnableWifi(0)
+    end
+end
+
 function Kindle:supportsScreensaver()
-    if isSpecialOffers() then
+    if self.isSpecialOffers then
         return false
     else
         return true
@@ -619,7 +624,11 @@ end
 
 function KindleTouch:exit()
     Generic.exit(self)
-    if isSpecialOffers() then
+    if self.isSpecialOffers then
+        -- Wakey wakey...
+        if os.getenv("AWESOME_STOPPED") == "yes" then
+            os.execute("killall -cont awesome")
+        end
         -- fake a touch event
         if self.touch_dev then
             local width, height = self.screen:getScreenWidth(), self.screen:getScreenHeight()

frontend/ui/widget/virtualkeyboard.lua

@@ -27,6 +27,9 @@ local VirtualKey = InputContainer:new{
 
     keyboard = nil,
     callback = nil,
+    -- This is to inhibit the key's own refresh (useful to avoid conflicts on Layout changing keys)
+    skiptap = nil,
+    skiphold = nil,
 
     width = nil,
     height = math.max(Screen:getWidth(), Screen:getHeight())*0.33,
@@ -37,15 +40,20 @@ local VirtualKey = InputContainer:new{
 function VirtualKey:init()
     if self.keyboard.symbolmode_keys[self.label] ~= nil then
         self.callback = function () self.keyboard:setLayout("Sym") end
+        self.skiptap = true
     elseif self.keyboard.shiftmode_keys[self.label] ~= nil then
         self.callback = function () self.keyboard:setLayout("Shift") end
+        self.skiptap = true
     elseif self.keyboard.utf8mode_keys[self.label] ~= nil then
         self.callback = function () self.keyboard:setLayout("IM") end
+        self.skiptap = true
     elseif self.keyboard.umlautmode_keys[self.label] ~= nil then
         self.callback = function () self.keyboard:setLayout("Äéß") end
+        self.skiptap = true
     elseif self.label == "Backspace" then
         self.callback = function () self.keyboard:delChar() end
         self.hold_callback = function () self.keyboard:clear() end
+        --self.skiphold = true
     elseif self.label =="←" then
         self.callback = function() self.keyboard:leftChar() end
     elseif self.label == "→" then
@@ -113,13 +121,23 @@ function VirtualKey:init()
     self.flash_keyboard = G_reader_settings:readSetting("flash_keyboard") ~= false
 end
 
-function VirtualKey:update_keyboard()
-    -- NOTE: We could arguably use "fast" when inverted & "ui" when not, but it doesn't change much,
-    --       and doesn't help with the graphics quirks of repeated "fast" updates on some devices.
-    UIManager:setDirty(self.keyboard, function()
-        logger.dbg("update key region", self[1].dimen)
-        return "fast", self[1].dimen
-    end)
+function VirtualKey:update_keyboard(want_flash, want_fast)
+    -- NOTE: We mainly use "fast" when inverted & "ui" when not, with a cherry on top:
+    --       we flash the *full* keyboard instead when we release a hold.
+    if want_flash then
+        UIManager:setDirty(self.keyboard, function()
+            return "flashui", self.keyboard[1][1].dimen
+        end)
+    else
+        local refresh_type = "ui"
+        if want_fast then
+            refresh_type = "fast"
+        end
+        UIManager:setDirty(self.keyboard, function()
+            logger.dbg("update key region", self[1].dimen)
+            return refresh_type, self[1].dimen
+        end)
+    end
 end
 
 function VirtualKey:onFocus()
@@ -131,9 +149,9 @@ function VirtualKey:onUnfocus()
 end
 
 function VirtualKey:onTapSelect()
-    if self.flash_keyboard then
+    if self.flash_keyboard and not self.skiptap then
         self[1].invert = true
-        self:update_keyboard()
+        self:update_keyboard(false, true)
         if self.callback then
             self.callback()
         end
@@ -147,13 +165,13 @@ function VirtualKey:onTapSelect()
 end
 
 function VirtualKey:onHoldSelect()
-    if self.flash_keyboard then
+    if self.flash_keyboard and not self.skiphold then
         self[1].invert = true
-        self:update_keyboard()
+        self:update_keyboard(false, true)
         if self.hold_callback then
             self.hold_callback()
         end
-        UIManager:tickAfterNext(function() self:invert(false) end)
+        UIManager:tickAfterNext(function() self:invert(false, true) end)
     else
         if self.hold_callback then
             self.hold_callback()
@@ -162,9 +180,9 @@ function VirtualKey:onHoldSelect()
     return true
 end
 
-function VirtualKey:invert(invert)
+function VirtualKey:invert(invert, hold)
     self[1].invert = invert
-    self:update_keyboard()
+    self:update_keyboard(hold, false)
 end
 
 local VirtualKeyboard = FocusManager:new{

plugins/SSH.koplugin/main.lua

@@ -30,7 +30,7 @@ function SSH:init()
 end
 
 function SSH:start()
-    local cmd = string.format("%s %s %s %s%s %s %s %s",
+    local cmd = string.format("%s %s %s %s%s %s",
         "./dropbearmulti dropbear",
         "-E",
         "-R",
@@ -141,8 +141,8 @@ function SSH:addToMainMenu(menu_items)
             },
             {
                 text = _("Stop SSH server"),
-                callback = self.stop,
-                enabled_func = self.isRunning,
+                callback = function() return self:stop() end,
+                enabled_func = function() return self:isRunning() end,
             },
             {
                 text = _("Change SSH port"),