invert button on tap

frontend/apps/reader/modules/readercropping.lua

@@ -32,6 +32,7 @@ function PageCropDialog:init()
         radius = 7,
         text_font_face = "cfont",
         text_font_size = 20,
+        show_parent = self,
     }
     local cancel_button = Button:new{
         text = self.cancel_text,
@@ -41,6 +42,7 @@ function PageCropDialog:init()
         radius = 7,
         text_font_face = "cfont",
         text_font_size = 20,
+        show_parent = self,
     }
     local ok_container = RightContainer:new{
         dimen = Geom:new{ w = Screen:getWidth()*0.33, h = Screen:getHeight()/12},

frontend/ui/widget/button.lua

@@ -6,7 +6,9 @@ local Geom = require("ui/geometry")
 local GestureRange = require("ui/gesturerange")
 local FrameContainer = require("ui/widget/container/framecontainer")
 local CenterContainer = require("ui/widget/container/centercontainer")
+local UIManager = require("ui/uimanager")
 local Device = require("ui/device")
+local DEBUG = require("dbg")
 local _ = require("gettext")
 
 --[[
@@ -139,7 +141,13 @@ end
 
 function Button:onTapSelect()
     if self.enabled then
-        self.callback()
+        self[1].invert = true
+        UIManager:setDirty(self.show_parent, "partial")
+        UIManager:scheduleIn(0.1, function()
+            self.callback()
+            self[1].invert = false
+            UIManager:setDirty(self.show_parent, "partial")
+        end)
     end
     return true
 end

frontend/ui/widget/buttondialog.lua

@@ -39,6 +39,7 @@ function ButtonDialog:init()
             ButtonTable:new{
                 width = Screen:getWidth()*0.9,
                 buttons = self.buttons,
+                show_parent = self,
             },
             background = 0,
             bordersize = 2,

frontend/ui/widget/buttontable.lua

@@ -42,6 +42,7 @@ function ButtonTable:init()
                 padding = 0,
                 text_font_face = self.button_font_face,
                 text_font_size = self.button_font_size,
+                show_parent = self.show_parent,
             }
             local button_dim = button:getSize()
             local vertical_sep = LineWidget:new{

frontend/ui/widget/confirmbox.lua

@@ -43,6 +43,7 @@ function ConfirmBox:init()
             self.ok_callback()
             UIManager:close(self)
         end,
+        show_parent = self,
     }
     local cancel_button = Button:new{
         text = self.cancel_text,
@@ -51,6 +52,7 @@ function ConfirmBox:init()
             self.cancel_callback()
             UIManager:close(self)
         end,
+        show_parent = self,
     }
 
     self.layout = { { ok_button, cancel_button } }

frontend/ui/widget/dictquicklookup.lua

@@ -34,7 +34,7 @@ local DictQuickLookup = InputContainer:new{
     content_face = Font:getFace("cfont", DDICT_FONT_SIZE),
     width = nil,
     height = nil,
-    
+
     title_padding = Screen:scaleByDPI(5),
     title_margin = Screen:scaleByDPI(2),
     word_padding = Screen:scaleByDPI(2),
@@ -113,13 +113,13 @@ function DictQuickLookup:update()
             height = self.height*0.7,
             dialog = self,
         },
-    }    
+    }
     local button_table = ButtonTable:new{
         width = math.max(self.width, definition:getSize().w),
         button_font_face = "cfont",
         button_font_size = 20,
         buttons = {
-            {    
+            {
                 {
                     text = _("<<"),
                     enabled = self:isPrevDictAvaiable(),
@@ -153,6 +153,7 @@ function DictQuickLookup:update()
             },
         },
         zero_sep = true,
+        show_parent = self,
     }
     local title_bar = LineWidget:new{
         --background = 8,
@@ -161,12 +162,12 @@ function DictQuickLookup:update()
             h = Screen:scaleByDPI(2),
         }
     }
-    
+
     self.dict_bar = OverlapGroup:new{
         dimen = {w = button_table:getSize().w, h = self.dict_title:getSize().h},
         self.dict_title,
     }
-    
+
     self.dict_frame = FrameContainer:new{
         radius = 8,
         bordersize = 3,
@@ -237,7 +238,7 @@ function DictQuickLookup:changeDictionary(index)
     self.dictionary = self.results[index].dict
     self.lookupword = self.results[index].word
     self.definition = self.results[index].definition
-    
+
     local orig_dimen = self.dict_frame and self.dict_frame.dimen or Geom:new{}
     self:update()
 
@@ -248,7 +249,7 @@ function DictQuickLookup:changeDictionary(index)
     end
 end
 
-function DictQuickLookup:changeToDefaultDict()        
+function DictQuickLookup:changeToDefaultDict()
     if self.dictionary then
         -- dictionaries that have definition of the first word(accurate word)
         -- excluding Fuzzy queries.

frontend/ui/widget/inputdialog.lua

@@ -59,6 +59,7 @@ function InputDialog:init()
         button_font_size = 20,
         buttons = self.buttons,
         zero_sep = true,
+        show_parent = self,
     }
     self.title_bar = LineWidget:new{
         --background = 8,

frontend/ui/widget/menu.lua

@@ -355,11 +355,13 @@ function Menu:init()
         icon = "resources/icons/appbar.chevron.left.png",
         callback = function() self:onPrevPage() end,
         bordersize = 0,
+        show_parent = self,
     }
     self.page_info_right_chev = Button:new{
         icon = "resources/icons/appbar.chevron.right.png",
         callback = function() self:onNextPage() end,
         bordersize = 0,
+        show_parent = self,
     }
     self.page_info_left_chev:hide()
     self.page_info_right_chev:hide()

frontend/ui/widget/touchmenu.lua

@@ -41,6 +41,10 @@ function TouchMenuItem:init()
         },
     }
 
+    local item_enabled = self.item.enabled
+    if self.item.enabled_func then
+        item_enabled = self.item.enabled_func()
+    end
     self.item_frame = FrameContainer:new{
         width = self.dimen.w,
         bordersize = 0,
@@ -50,6 +54,8 @@ function TouchMenuItem:init()
             HorizontalSpan:new{ width = 10 },
             TextWidget:new{
                 text = self.item.text or self.item.text_func(),
+                bgcolor = 0.0,
+                fgcolor = item_enabled ~= false and 1.0 or 0.5,
                 face = self.face,
             },
         },
@@ -58,6 +64,12 @@ function TouchMenuItem:init()
 end
 
 function TouchMenuItem:onTapSelect(arg, ges)
+    local enabled = self.item.enabled
+    if self.item.enabled_func then
+        enabled = self.item.enabled_func()
+    end
+    if enabled == false then return end
+
     self.item_frame.invert = true
     UIManager:setDirty(self.show_parent, "partial")
     UIManager:scheduleIn(0.5, function()
@@ -401,18 +413,31 @@ function TouchMenu:onSwipe(arg, ges_ev)
 end
 
 function TouchMenu:onMenuSelect(item)
-    if item.sub_item_table == nil then
+    local enabled = item.enabled
-        if item.callback then
+    if item.enabled_func then
+        enabled = item.enabled_func()
+    end
+    if enabled == false then return end
+    local sub_item_table = item.sub_item_table
+    if item.sub_item_table_func then
+        sub_item_table = item.sub_item_table_func()
+    end
+    if sub_item_table == nil then
+        local callback = item.callback
+        if item.callback_func then
+            callback = item.callback_func()
+        end
+        if callback then
             -- put stuff in scheduler so we can See
             -- the effect of inverted menu item
             UIManager:scheduleIn(0.1, function()
                 self:closeMenu()
-                item.callback()
+                callback()
             end)
         end
     else
         table.insert(self.item_table_stack, self.item_table)
-        self.item_table = item.sub_item_table
+        self.item_table = sub_item_table
         self:updateItems()
     end
     return true