JiveLite

**Learnincurve** · 2021-01-03, 08:38

Hi again,

I have made my first attempted changes to the AutoSkin applet to try to make it respond to keyboard (ir-keytable) KEY_UP, KEY_DOWN, KEY_RIGHT and KEY_PLAY events.

I have no coding experience, so apologies in advance if answers should be very obvious!

My first problem is identifying a jive/ui/Framework function that returns a key name (similar to getIRCodes for arrow_up, arrow_down, arrow_right and play remote button presses).

I tried getAction, as it looked like it should return Keycode for key press actions:

Code:

function getAction(self, event)
	local eventType = event:getType()
	local action = nil

	if eventType == jive.ui.EVENT_KEY_PRESS then
		action = self.inputToActionMap.keyActionMappings.press[event:getKeycode()]
	elseif eventType == jive.ui.EVENT_GESTURE then
		action = self.inputToActionMap.gestureActionMappings[event:getGesture()]
	elseif eventType == jive.ui.EVENT_KEY_HOLD then
		action = self.inputToActionMap.keyActionMappings.hold[event:getKeycode()]
	elseif eventType == jive.ui.EVENT_CHAR_PRESS then
		action = self.inputToActionMap.charActionMappings.press[string.char(event:getUnicode())]
	elseif eventType == jive.ui.EVENT_IR_PRESS then
		action = inputToActionMap.irActionMappings.press[self:getIRButtonName(event:getIRCode())]
	elseif eventType == jive.ui.EVENT_IR_HOLD then
		action = inputToActionMap.irActionMappings.hold[self:getIRButtonName(event:getIRCode())]
	end

	return action
end

but I was wrong as the log shows:
tail -f /var/log/jivelite.log
20210103 15:19:51.416 DEBUG jivelite.ui - Widget.lua:437 Creating widget action listener for action: (go_home) from source: [...pplets/ChooseMusicSource/ChooseMusicSourceApplet.lua]:767
20210103 15:19:51.416 DEBUG jivelite.ui - Widget.lua:437 Creating widget action listener for action: (go) from source: [/opt/jivelite/share/jive/jive/ui/Slider.lua]:108
20210103 15:19:51.416 DEBUG jivelite.ui - Widget.lua:437 Creating widget action listener for action: (play) from source: [/opt/jivelite/share/jive/jive/ui/Slider.lua]:109
20210103 15:19:51.416 DEBUG jivelite.ui - Widget.lua:437 Creating widget action listener for action: (page_up) from source: [/opt/jivelite/share/jive/jive/ui/Textarea.lua]:129
20210103 15:19:51.416 DEBUG jivelite.ui - Widget.lua:437 Creating widget action listener for action: (page_down) from source: [/opt/jivelite/share/jive/jive/ui/Textarea.lua]:130
20210103 15:19:51.416 DEBUG jivelite.ui - Framework.lua:780 Translated action title_left_press to back
20210103 15:19:51.417 DEBUG jivelite.ui - Framework.lua:780 Translated action title_right_press to go_now_playing

Can anyone suggest where I should find the function that returns key press events?

Here's the complete code for the first draft of the revised applet:

Code:

--[[
=head1 NAME

applets.AutoSkin.AutoSkinApplet - An applet to select different SqueezePlay skins

=head1 DESCRIPTION

This applet allows the SqueezePlay skin to be selected.

=head1 FUNCTIONS

Applet related methods are described in L<jive.Applet>. 
AutoSkinApplet overrides the following methods:

=cut
--]]

local ipairs, pairs = ipairs, pairs

local oo              = require("loop.simple")
local Applet          = require("jive.Applet")

local Framework       = require("jive.ui.Framework")
local Surface         = require("jive.ui.Surface")

local jiveMain        = jiveMain
local appletManager   = appletManager

local debug           = require("jive.utils.debug")

module(..., Framework.constants)
oo.class(_M, Applet)

--service method
function getActiveSkinType(self)
	return self.mode
end

function init(self, ...)

	-- skins, could be configurable via settings
	local touchSkin = "touch"
	local remoteSkin = "remote"

	--temp workaround, until it is resolved how to avoid self.mode being null on startup
	--if not self.mode then
	--	self.mode = nil
	--end
	
	if not self.irBlacklist then
		self.irBlacklist = {}

		-- see jive.irMap_default for defined buttons
		for x, button in ipairs({
			"arrow_up",
			"arrow_down",
		--	"arrow_left",
			"arrow_right",
			"play",
		--	"add",
		--	"now_playing",
		}) do
			local irCodes = Framework:getIRCodes(button)
			
			for name, irCode in pairs(irCodes) do
				self.irBlacklist[irCode] = button
			end
		end

	end

        local eatIREvents = false

        if not self.keyBlacklist then
		self.keyBlacklist = {}

		-- see share/jive/jive/ui/Textinput.lua for defined keys
		for x, key in ipairs({
			"KEY_UP",
			"KEY_DOWN",
		--	"KEY_LEFT",
			"KEY_RIGHT",
			"KEY_PLAY",			
		}) do
			local keyCodes = Framework:getAction(key)
			
			for name, keyCode in pairs(keyCodes) do
				self.keyBlacklist[keyCode] = key
			end
		end

	end

        local eatKEYEvents = false
	
		
	Framework:addListener(EVENT_IR_ALL,
		function(event)
			-- ignore initial keypress after switching from touch to IR control
			if eatIREvents then

				if event:getType() == EVENT_IR_UP then
					eatIREvents = false
				end
				return EVENT_CONSUME

			elseif self:changeSkin(remoteSkin) and self.irBlacklist[event:getIRCode()] ~= nil then

				log:warn("ignore me - key " .. self.irBlacklist[event:getIRCode()] .. " is context sensitive")
				eatIREvents = true
				return EVENT_CONSUME

			end

			return EVENT_UNUSED
		end,
		-100)

	Framework:addListener(EVENT_KEY_ALL,
		function(event)
			-- ignore initial keypress after switching from touch to KEY control
			if eatKEYEvents then

				if event:getType() == EVENT_KEY_UP then
					eatKEYEvents = false
				end
				return EVENT_CONSUME

			elseif self:changeSkin(remoteSkin) and self.keyBlacklist[event:getKeycode()] ~= nil then

				log:warn("ignore me - key " .. self.keyBlacklist[event:getKeycode()] .. " is context sensitive")
				eatKEYEvents = true
				return EVENT_CONSUME

			end

			return EVENT_UNUSED
		end,
		-100)

	Framework:addListener(EVENT_MOUSE_ALL,
		function(event)

			-- ignore event when switching from remote to touch: we don't know what we're touching
			-- wake up if in screensaver mode - this is a non critical action
			if self:changeSkin(touchSkin) and not appletManager:callService("isScreensaverActive") then
				log:warn("ignore me - I don't know what I'm touching!")
				return EVENT_CONSUME
			end

			return EVENT_UNUSED
		end,
		-100)

	return self
end



function changeSkin(self, skinType)
	if  self.mode == skinType then
		return false
	end

	local skinName = appletManager:callService("getSelectedSkinNameForType", skinType)
	if jiveMain:getSelectedSkin() == skinName then
		self.mode = skinType -- needed for inital setting of mode at start.
		log:debug("skin already selected, not switching: ", skinName)
		return false
	end

        log:info(self,":changeSkin ",skinName,":",skinType)
	local img1 = _capture("foo")

	self.mode = skinType
	jiveMain:setSelectedSkin(skinName)

	local img2 = _capture("bar")

	Framework:_startTransition(self._transitionFadeIn(img1, img2))

	return true
end


function _capture(name)
	local sw, sh = Framework:getScreenSize()
	local img = Surface:newRGB(sw, sh)

	Framework:draw(img)

	return img
end


function _transitionFadeIn(oldImage, newImage)
	-- use a fast transition

	local startT
	local transitionDuration = 100
	local remaining = transitionDuration
	local sw, sh = Framework:getScreenSize()
	local scale = (transitionDuration * transitionDuration * transitionDuration) / sw
	local animationCount = 0

	local scale = 255 / transitionDuration


	return function(widget, surface)
			if animationCount == 0 then
				--getting start time on first loop avoids initial delay that can occur
				startT = Framework:getTicks()
			end
			local x = remaining * scale

			newImage:blit(surface, 0, 0)
			oldImage:blitAlpha(surface, 0, 0, x)

			local elapsed = Framework:getTicks() - startT
			remaining = transitionDuration - elapsed

			if remaining <= 0 then
				Framework:_killTransition()
			end
			animationCount = animationCount + 1
		end
end


--[[

=head1 LICENSE

Copyright 2010 Logitech. All Rights Reserved.

This file is licensed under BSD. Please see the LICENSE file for details.

=cut
--]]

I also tried consuming from event.lua directly like so:

Code:

--			local keyCodes = Framework:getAction(key)
--			
--			for name, keyCode in pairs(keyCodes) do
--				self.keyBlacklist[keyCode] = key
			local keyCode = Event:getKeycode(key)
			
			for name, keyCode do
				self.keyBlacklist[keyCode] = key
			end
		end

	end

BR.

**Learnincurve** · 2021-01-04, 07:40

Update: Applet now loading.

I saw some basic coding errors in yesterday's attempt and tried a really simple version with extra debug logging and a key listener based on the mouse listener, to avoid all the IR related code:

Code:

--[[
=head1 NAME

applets.AutoSkin.AutoSkinApplet - An applet to select different SqueezePlay skins

=head1 DESCRIPTION

This applet allows the SqueezePlay skin to be selected.

=head1 FUNCTIONS

Applet related methods are described in L<jive.Applet>.
AutoSkinApplet overrides the following methods:

=cut
--]]

local ipairs, pairs = ipairs, pairs

local oo              = require("loop.simple")
local Applet          = require("jive.Applet")

local Framework       = require("jive.ui.Framework")
local Surface         = require("jive.ui.Surface")

local jiveMain        = jiveMain
local appletManager   = appletManager

local debug           = require("jive.utils.debug")

module(..., Framework.constants)
oo.class(_M, Applet)

--service method
function getActiveSkinType(self)
        return self.mode
end

function init(self, ...)


        -- skins, could be configurable via settings
        local touchSkin = "touch"
        local remoteSkin = "remote"
        local eatKEYEvents = false
        --temp workaround, until it is resolved how to avoid self.mode being null on startup
        --if not self.mode then
--      Shouldn't be necessary if we look for any key event to trigger the "remote" skin. Looks like irBlacklist is empty by default
        --end
--
--      if not self.irBlacklist then
--              self.irBlacklist = {}
--
--              -- see jive.irMap_default for defined buttons
--              for x, button in ipairs({
--                      "arrow_up",
--                      "arrow_down",
--              --      "arrow_left",
--                      "arrow_right",
--                      "play",
--              --      "add",
--              --      "now_playing",
--              }) do
--                      local irCodes = Framework:getIRCodes(button)
--
--                      for name, irCode in pairs(irCodes) do
--                              self.irBlacklist[irCode] = button
--                      end
--              end
--
--      end
--
--      local eatIREvents = false


--      Framework:addListener(EVENT_IR_ALL,
--              function(event)
--                      -- ignore initial keypress after switching from touch to IR control
--                      if eatIREvents then
--
--                              if event:getType() == EVENT_IR_UP then

--                                      eatIREvents = false
--                              end
--                              return EVENT_CONSUME
--
--                      elseif self:changeSkin(remoteSkin) and self.irBlacklist[event:getIRCode()] ~= nil then
--
--                              log:warn("ignore me - key " .. self.irBlacklist[event:getIRCode()] .. " is context sensitive")
--                              eatIREvents = true
--                              return EVENT_CONSUME
--
--                      end
--
--                      return EVENT_UNUSED
--              end,
--              -100)
--
        log:debug("Initiating AutoSkin applet")

        Framework:addListener(EVENT_KEY_ALL,
                function(event)
                        -- ignore initial keypress after switching from touch to KEY control
                        log:debug("Key event listener starting")
                        if eatKEYEvents then
                                log:debug("Key event detected")

                                if event:getType() == EVENT_KEY_UP then
                                        eatKEYEvents = false
                                        log:debug("EVENT_KEY_UP event detected")
                                end
                                return EVENT_CONSUME

                        -- wake up if in screensaver mode - this is a non critical action
                                if self:changeSkin(remoteSkin) and not appletManager:callService("isScreensaverActive") then
                                        log:warn("ignore me - I'm just waking up!")
                                        eatKEYEvents = true
                                        return EVENT_CONSUME
                                                                                                                                        end
                                end
                                return EVENT_UNUSED
                end,
                -100)

--Base the key listener on the mouse/(touch) listener for now
        Framework:addListener(EVENT_MOUSE_ALL,
                function(event)

                        -- ignore event when switching from remote to touch: we don't know what we're touching
                        -- wake up if in screensaver mode - this is a non critical action
                        log:debug("Mouse/Touch event detected")
                        if self:changeSkin(touchSkin) and not appletManager:callService("isScreensaverActive") then  
 log:warn("ignore me - I don't know what I'm touching!")
                                return EVENT_CONSUME
                        end

                        return EVENT_UNUSED
                end,
                -100)

        return self
end



function changeSkin(self, skinType)
        if  self.mode == skinType then
                return false
        end

        local skinName = appletManager:callService("getSelectedSkinNameForType", skinType)
        if jiveMain:getSelectedSkin() == skinName then
                self.mode = skinType -- needed for inital setting of mode at start.
                log:debug("skin already selected, not switching: ", skinName)
                return false
        end

        log:info(self,":changeSkin ",skinName,":",skinType)
        local img1 = _capture("foo")

        self.mode = skinType
        jiveMain:setSelectedSkin(skinName)

        local img2 = _capture("bar")

        Framework:_startTransition(self._transitionFadeIn(img1, img2))

        return true
end


function _capture(name)
        local sw, sh = Framework:getScreenSize()
        local img = Surface:newRGB(sw, sh)

        Framework:draw(img)

        return img
end


function _transitionFadeIn(oldImage, newImage)
        -- use a fast transition

        local startT
        local transitionDuration = 100
        local remaining = transitionDuration
        local sw, sh = Framework:getScreenSize()
        local scale = (transitionDuration * transitionDuration * transitionDuration) / sw
        local animationCount = 0

        local scale = 255 / transitionDuration


        return function(widget, surface)
                        if animationCount == 0 then
                                --getting start time on first loop avoids initial delay that can occur
                                startT = Framework:getTicks()
                        end
                        local x = remaining * scale

                        newImage:blit(surface, 0, 0)
                        oldImage:blitAlpha(surface, 0, 0, x)

                        local elapsed = Framework:getTicks() - startT
                        remaining = transitionDuration - elapsed

                        if remaining <= 0 then
                                Framework:_killTransition()
                        end
                        animationCount = animationCount + 1
                end
end


--[[

=head1 LICENSE

Copyright 2010 Logitech. All Rights Reserved.

This file is licensed under BSD. Please see the LICENSE file for details.

=cut
--]]

The applet basically works, but:

1. First keystroke loads new skin over screensaver (clock). Should be ignored f screensaver is active?
2. There should be a timer to revert to the touch skin after a given # of seconds?
3. After a few keystrokes (not yet sure how many, the listener seems to crash, so that further keystrokes are not detected.

I'll continue to fumble around, but if anyone has any tips...

**Learnincurve** · 2021-01-26, 04:07

Originally Posted by Learnincurve

The applet basically works, but:

1. First keystroke loads new skin over screensaver (clock). Should be ignored f screensaver is active?
2. There should be a timer to revert to the touch skin after a given # of seconds?
3. After a few keystrokes (not yet sure how many, the listener seems to crash, so that further keystrokes are not detected.

I'll continue to fumble around, but if anyone has any tips...

Fumbling produced the following small step closer:

Here's the key listener code as it stands, including a simple timer, lifted from the screensaver applet:

Code:

31 --Timer declaration:
32 local Timer            = require("jive.ui.Timer")
...
...

101
102         Framework:addListener(EVENT_KEY_ALL,
103 --      We don't want double events, so only respond when key is pressed
104
105                 function(event)
106                         -- ignore initial keypress after switching from touch to KEY control. eatKEYEvents initally set FALSE, jumping first if
107                         log:debug("Key event listener starting")
108                         if eatKEYEvents then
109                                 log:debug("Key event detected")
110
111                                 --jump out again if this is an UP event, we only want to respond once to each keypress
112                                 if event:getType() == EVENT_KEY_UP then
113                                         eatKEYEvents = false
114                                         log:debug("EVENT_KEY_UP event detected. ignoring as we only want DOWN's")
115                                 end
116                                 --if eatKEYEVENTS is TRUE and this is a DOWN event, we consume the event, leaving nothing. So don't act on this keypress.
117                                 log:debug("key DOWN detected and eatKEYEvents is set. If we consume this no action is performed ")
118                                 -- return EVENT_CONSUME
119
120                         elseif self:changeSkin(remoteSkin) and not appletManager:callService("isScreensaverActive") then
121                                         log:debug("no screensaver, accepting key event")
122                                         eatKEYEvents = true
123                                 --      return EVENT_UNUSED
124                                         --Experimental Timer code from here
125                                         self.timer = Timer(6000, function() self:changeSkin(touchSkin) end, true)
126                                         log:debug("starting timer")
127                                         self.timer:start()
128
129                                         -- -- listener to restart skin-switcher timer
130                                         Framework:addListener(bit.bor(ACTION, EVENT_KEY_ALL),
131                                                 function(event)
132                                                         -- restart timer if it is running
133                                                         log:debug("another key event detected - resetting timer")
134                                                         self.timer:setInterval(6000)
135                                                         return EVENT_UNUSED
136                                                 end,
137                                                 true
138                                         )
139                                         --To here
140                                 end
141
142                                 log:debug("screensaver active, ignoring key event")
143                                 return EVENT_UNUSED
144                         end,
145                 -100)
146

Basically working as follows:
If the screensaver is running, the initial keypress only wakes from screensaver, leaving the skin unchanged.
If on the main home screen, arrow keys navigate within the loaded skin, but don't change it (not sure why this is happening, but can live with it).
First "Go" event seems to trigger the skin change. The timer runs (currently set to 6 seconds)
The timer is NOT resetting/restarting with multiple events, so, after six seconds the touch skin is reloaded. I'll need to do some more fumbling around with the following

Code:

    -- -- listener to restart skin-switcher timer
130                                         Framework:addListener(bit.bor(ACTION, EVENT_KEY_ALL),
131                                                 function(event)
132                                                         -- restart timer if it is running
133                                                         log:debug("another key event detected - resetting timer")
134                                                         self.timer:setInterval(6000)
135                                                         return EVENT_UNUSED

I think I see what's going on here: We never hit the restart listener from where it is. Probably we don't even need a new listener as we're always listening for new key events anyway.

Simple questions: If I move the single line self.timer:setInterval(6000) to above line 125, does that reset the running timer if there is one and ignore if there isn't, or do I need to explicitly check for a running timer first (if so, how)? Does it need to run from within function(event)

BR.

**Learnincurve** · 2021-01-30, 03:54

I'm very close to making this work now. Here's the uncleaned code so far:

Code:

--[[
=head1 NAME

applets.AutoSkin.AutoSkinApplet - An applet to select different SqueezePlay skins

=head1 DESCRIPTION

This applet allows the SqueezePlay skin to be selected.

=head1 FUNCTIONS

Applet related methods are described in L<jive.Applet>. 
AutoSkinApplet overrides the following methods:

=cut
--]]

local ipairs, pairs = ipairs, pairs

local oo              = require("loop.simple")
local Applet          = require("jive.Applet")

local Framework       = require("jive.ui.Framework")
local Surface         = require("jive.ui.Surface")

local jiveMain        = jiveMain
local appletManager   = appletManager

local debug           = require("jive.utils.debug")
--Timer declaration added by Marius
local Timer            = require("jive.ui.Timer")
local interval          = 6000
module(..., Framework.constants)
oo.class(_M, Applet)

--service method
function getActiveSkinType(self)
        return self.mode
end

function init(self, ...)
       -- skins, could be configurable via settings
        local touchSkin = "touch"
        local remoteSkin = "remote"
        local eatKEYEvents = "false"
        --initiate the timer
        self.timer = Timer(interval, function() self:changeSkin(touchSkin) end, true)

        --temp workaround, until it is resolved how to avoid self.mode being null on startup
        --if not self.mode then
--      Shouldn't be necessary if we look for any key event to trigger the "remote" skin. Looks like irBlacklist is empty by default
        --end
--      
--      if not self.irBlacklist then
--              self.irBlacklist = {}
--
--              -- see jive.irMap_default for defined buttons
--              for x, button in ipairs({
--                      "arrow_up",
--                      "arrow_down",
--              --      "arrow_left",
--                      "arrow_right",
--                      "play",
--              --      "add",
--              --      "now_playing",
--              }) do
--                      local irCodes = Framework:getIRCodes(button)
--                      
--                      for name, irCode in pairs(irCodes) do
--                              self.irBlacklist[irCode] = button
--                      end
--              end
--
--      end
--
--      local eatIREvents = false


--      Framework:addListener(EVENT_IR_ALL,
--              function(event)
--                      -- ignore initial keypress after switching from touch to IR control
--                      if eatIREvents then
--
--                              if event:getType() == EVENT_IR_UP then
--                                      eatIREvents = false
--                              end
--                              return EVENT_CONSUME
--
--                      elseif self:changeSkin(remoteSkin) and self.irBlacklist[event:getIRCode()] ~= nil then
--
--                              log:warn("ignore me - key " .. self.irBlacklist[event:getIRCode()] .. " is context sensitive")
--                              eatIREvents = true
--                              return EVENT_CONSUME
--
--                      end
--
--                      return EVENT_UNUSED
--              end,
--              -100)
--
        log:debug("Initiating AutoSkin applet")
Framework:addListener(EVENT_KEY_ALL,
 --      We don't want double events, so only respond when key is pressed
        function(event)
                -- ignore initial keypress after switching from touch to KEY control. eatKEYEvents initally set FALSE, jumping first if
                log:debug("Key event detected")
                --reset the timer whenever any key is pressed
                self.timer:setInterval(interval)
                if eatKEYEvents then
                   log:debug("eatKEYEvent is true")
                --jump out again if this is an UP event, we only want to respond once to each keypress
                        if event:getType() == EVENT_KEY_UP then
                                log:debug("Key UP event detected. Resetting EatKEYEvents to False")
                                eatKEYEvents = false
                        end
                --if eatKEYEVENTS is TRUE and this is a DOWN event, we consume the event, leaving nothing. So don't act on this keypress.
                log:debug("key DOWN detected and eatKEYEvents is set. If we consume this no action is performed ")
                -- return EVENT_CONSUME --removing this for now as it seemed to consume all remaining events

                --otherwise change the skin to the remote skin for the preset time if no screensaver is running
                elseif self:changeSkin(remoteSkin) and not appletManager:callService("isScreensaverActive") then
                        log:debug("no screensaver - accepting key event, setting eatKEYEvents to true, starting timer and changing to remote skin")
                        eatKEYEvents = true
                        --      return EVENT_UNUSED --commented out because of duplication in timer
--Experimental Timer code from here
                        -- self.timer = Timer(6000, function() self:changeSkin(touchSkin) end, true) -- moved to initialisation
                        log:debug("starting timer")
                        self.timer:start()
                        -- listener to restart skin-switcher timer --not at all sure about this as it looks as if we never trigger it from here and there's allready a key event listener running. Can we move the interval reset to the beginning of this section?
                        -- Framework:addListener(bit.bor(ACTION, EVENT_KEY_ALL),
                                -- function(event)
                                -- --restart timer if it is running
                                        --log:debug("another key event detected - resetting timer")
                                        --self.timer:setInterval(6000)
                                        --return EVENT_UNUSED
                                -- end,
                                -- true
                                                --)
 --To here
                end
 --If none of the above are true, the screensaver must be active
                log:debug("screensaver active, ignoring key event")
                return EVENT_UNUSED
        end,
        -100)

--Base the key listener on the mouse/(touch) listener for now
        Framework:addListener(EVENT_MOUSE_ALL,
                function(event)

                        -- ignore event when switching from remote to touch: we don't know what we're touching
                        -- wake up if in screensaver mode - this is a non critical action
                        log:debug("Mouse/Touch event detected")
                        if self:changeSkin(touchSkin) and not appletManager:callService("isScreensaverActive") then
                                log:debug("no screensaver, accepting touch event")
                                return EVENT_CONSUME
                        end
                        log:debug("screensaver active, ignoring touch event")
                        return EVENT_UNUSED
                end,
                -100)

        return self
end



function changeSkin(self, skinType)
        if  self.mode == skinType then
                return false
        end

        local skinName = appletManager:callService("getSelectedSkinNameForType", skinType)
        if jiveMain:getSelectedSkin() == skinName then
                self.mode = skinType -- needed for inital setting of mode at start.
                log:debug("skin already selected, not switching: ", skinName)
                return false
        end

        log:info(self,":changeSkin ",skinName,":",skinType)
        local img1 = _capture("foo")

        self.mode = skinType
        jiveMain:setSelectedSkin(skinName)

        local img2 = _capture("bar")

        Framework:_startTransition(self._transitionFadeIn(img1, img2))

        return true
end


function _capture(name)
        local sw, sh = Framework:getScreenSize()
        local img = Surface:newRGB(sw, sh)

        Framework:draw(img)

        return img
end


function _transitionFadeIn(oldImage, newImage)
        -- use a fast transition

        local startT
        local transitionDuration = 100
        local remaining = transitionDuration
        local sw, sh = Framework:getScreenSize()
        local scale = (transitionDuration * transitionDuration * transitionDuration) / sw
        local animationCount = 0

        local scale = 255 / transitionDuration


        return function(widget, surface)
                        if animationCount == 0 then
                                --getting start time on first loop avoids initial delay that can occur
                                startT = Framework:getTicks()
                        end
                        local x = remaining * scale

                        newImage:blit(surface, 0, 0)
                        oldImage:blitAlpha(surface, 0, 0, x)

                        local elapsed = Framework:getTicks() - startT
                        remaining = transitionDuration - elapsed

                        if remaining <= 0 then
                                Framework:_killTransition()
                        end
                        animationCount = animationCount + 1
                end
end
                                                                                                                                                                   114,47        43%

**Learnincurve** · 2021-01-30, 03:54

...continued from previous post:

The main problem now is that I have misunderstood
EVENT_KEY_UP, EVENT_KEY_DOWN events, which I thought were repectively key release and key press and which I tried to use to filter so that only one event per keypress should be acted on.

How should this be done? Can I use something like:

Code:

int pressed ()
{

    SDL_Event event;

    while(SDL_PollEvent(&event) )
    {
        if(event.type == SDLK_KEYDOWN)
        {
                switch(event.key.keysym.sym)
                {
                    case SDLK_RETURN:
                        doStuff = 1
                        break;
                    default:
                        break;
                }
        }
        if(event.type == SDLK_KEYUP)
        {
                switch(event.key.keysym.sym)
                {
                    case SDLK_RETURN:
                        doStuff = 0;
                        break;
                    default:
                        break;
                }
        }
    }   
}

to filter based on doStuff=1?

I am also working on a tweak to HDSkin, for fonts and icons to be clear from a distance when using the remote. I'll publish everything here when I'm finished.

Thread: JiveLite

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attempted changes to AutoSkin applet

Almost there now

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