Fix partial HW dithered refreshes sometimes appearing to shift refreshed content (#6267)

* Fix HW dithered partial refreshes sometimes behaving as if the refreshed
content had moved a few pixels to the side...

Probably a kernel issue with the alignment fixup in the EPDC?

* Get rid of the legacy coordinates fixup

It shouldn't be necessary anymore.
And I'd rather fix the root cause, anyway.

* Bump base

(https://github.com/koreader/koreader-base/pull/1116)

* Missed a few DIVs in #6224

frontend/apps/reader/modules/readercropping.lua

@@ -112,7 +112,7 @@ function ReaderCropping:onPageCrop(mode)
         self.ui:handleEvent(Event:new("SetZoomMode", "page", "cropping"))
     end
     self.ui:handleEvent(Event:new("SetDimensions",
-        Geom:new{w = Screen:getWidth(), h = Screen:getHeight()*11/12})
+        Geom:new{w = Screen:getWidth(), h = math.floor(Screen:getHeight()*11/12)})
     )
     self.bbox_widget = BBoxWidget:new{
         crop = self,

frontend/apps/reader/modules/readerfont.lua

@@ -154,7 +154,7 @@ function ReaderFont:onShowFontMenu()
         title = self.font_menu_title,
         item_table = self.face_table,
         width = Screen:getWidth() - 100,
-        height = Screen:getHeight() / 2,
+        height = math.floor(Screen:getHeight() * 0.5),
         single_line = true,
         perpage_custom = 8,
     }

frontend/apps/reader/modules/readerhighlight.lua

@@ -707,7 +707,7 @@ function ReaderHighlight:onHoldPan(_, ges)
                 -- Also, we are not able to move hold_pos.x out of screen,
                 -- so if we started on the right page, ignore top left corner,
                 -- and if we started on the left page, ignore bottom right corner.
-                local screen_half_width = math.floor(Screen:getWidth() * 1/2)
+                local screen_half_width = math.floor(Screen:getWidth() * 0.5)
                 if self.hold_pos.x >= screen_half_width and is_in_prev_page_corner then
                     return true
                 elseif self.hold_pos.x <= screen_half_width and is_in_next_page_corner then

frontend/apps/reader/modules/readerrolling.lua

@@ -634,7 +634,7 @@ function ReaderRolling:onGotoXPointer(xp, marker_xp)
                 if BD.mirroredUILayout() then
                     -- In the middle margin, on the right of text
                     -- Same trick as below, assuming page2_x is equal to page 1 right x
-                    screen_x = Screen:getWidth() / 2
+                    screen_x = math.floor(Screen:getWidth() * 0.5)
                     local page2_x = self.ui.document:getPageOffsetX(self.ui.document:getCurrentPage()+1)
                     marker_w = page2_x + marker_w - screen_x
                     screen_x = screen_x - marker_w
@@ -648,7 +648,7 @@ function ReaderRolling:onGotoXPointer(xp, marker_xp)
                     -- In the middle margin, on the left of text
                     -- This is a bit tricky with how the middle margin is sized
                     -- by crengine (see LVDocView::updateLayout() in lvdocview.cpp)
-                    screen_x = Screen:getWidth() / 2
+                    screen_x = math.floor(Screen:getWidth() * 0.5)
                     local page2_x = self.ui.document:getPageOffsetX(self.ui.document:getCurrentPage()+1)
                     marker_w = page2_x + marker_w - screen_x
                 end
@@ -1086,7 +1086,7 @@ function ReaderRolling:showEngineProgress(percent)
         -- so it does not override the footer or a bookmark dogear
         local x = 0
         local y = Size.margin.small
-        local w = Screen:getWidth() / 3
+        local w = math.floor(Screen:getWidth() / 3)
         local h = Size.line.progress
         if self.engine_progress_widget then
             self.engine_progress_widget:setPercentage(percent)

frontend/apps/reader/modules/readerstyletweak.lua

@@ -32,7 +32,7 @@ local TweakInfoWidget = InputContainer:new{
     is_global_default = nil,
     toggle_global_default_callback = function() end,
     modal = true,
-    width = Screen:getWidth()*3/4,
+    width = math.floor(Screen:getWidth() * 0.75),
 }
 
 function TweakInfoWidget:init()

frontend/apps/reader/modules/readertypography.lua

@@ -231,7 +231,7 @@ When the book's language tag is not among our presets, no specific features will
                 title = _("Language tags (and hyphenation dictionaries) used since start up"),
                 text = status_text,
                 text_face = Font:getFace("smallinfont"),
-                height = Screen:getHeight() * 4/5,
+                height = math.floor(Screen:getHeight() * 0.8),
             })
         end,
         keep_menu_open = true,