diff options
| -rw-r--r-- | html/examples/animate_gif.wlua | 86 |
1 files changed, 56 insertions, 30 deletions
diff --git a/html/examples/animate_gif.wlua b/html/examples/animate_gif.wlua index 4334f37..04d69e0 100644 --- a/html/examples/animate_gif.wlua +++ b/html/examples/animate_gif.wlua @@ -7,8 +7,7 @@ require"iuplua" require"iupluacd" require"iupluaimglib" -images={} -frame=1 +anim={} function print_error(err) local msg = {} @@ -34,30 +33,55 @@ function load_frames(file_name) return end - images={} - images.delays={} - images.disposal={} - frame=1 + anim.images={} + anim.delays={} + anim.disposal={} + anim.pos={} + anim.frame=1 + + local ScreenWidth = 0 + local ScreenHeight = 0 for i=1, select(3,ifile:GetInfo()) do - images[i]=ifile:LoadBitmap(i-1) - err, images[i] = im.ConvertColorSpaceNew(images[i], im.RGB, true) - local delay=images[i]:GetAttribute("Delay") -- time to wait betweed frames in 1/100 of a second] + + anim.images[i]=ifile:LoadBitmap(i-1) + err, anim.images[i] = im.ConvertColorSpaceNew(anim.images[i], im.RGB, true) + + local delay=anim.images[i]:GetAttribute("Delay") -- time to wait betweed frames in 1/100 of a second] if delay then - images.delays[i]=delay[1]*10 -- timer in miliseconds + anim.delays[i]=delay[1]*10 -- timer in miliseconds else if (i == 1) then - images.delays[i]=100 + anim.delays[i]=100 else - images.delays[i]=images.delays[i-1] + anim.delays[i]=anim.delays[i-1] end end - images.disposal[i]=images[i]:GetAttribute("Disposal", true) -- [UNDEF, LEAVE, RBACK, RPREV] + + anim.disposal[i]=anim.images[i]:GetAttribute("Disposal", true) -- [UNDEF, LEAVE, RBACK, RPREV] + + local w = anim.images[i]:Width() + local h = anim.images[i]:Height() + if (w > ScreenWidth) then ScreenWidth = w end + if (h > ScreenHeight) then ScreenHeight = h end + w = anim.images[i]:GetAttribute("ScreenWidth") + h = anim.images[i]:GetAttribute("ScreenHeight") + if (w and w[1] > ScreenWidth) then ScreenWidth = w[1] end + if (h and h[1] > ScreenHeight) then ScreenHeight = h[1] end + + local X = anim.images[i]:GetAttribute("XScreen") + local Y = anim.images[i]:GetAttribute("YScreen") + anim.pos[i] = {x=0, y=0} + if (X) then anim.pos[i].x = X[1] end + if (Y) then anim.pos[i].y = Y[1] end end ifile:Close() - cnv.rastersize = images[1]:Width().."x"..images[1]:Height() + anim.ScreenHeight = ScreenHeight + anim.ScreenWidth = ScreenWidth + + cnv.rastersize = ScreenWidth.."x"..ScreenHeight dlg.size=nil iup.Refresh(cnv) end @@ -68,33 +92,33 @@ function start_timer() dlg.title = "Animated Gif" dlg.play_bt.image="IUP_MediaPause" dlg.play_bt.title="Pause" t.run = "NO" - t.time = images.delays[frame] + t.time = anim.delays[anim.frame] t.run = "YES" iup.Update(cnv) end function stop_timer() - dlg.title = "Animated Gif "..frame.."/"..#images + dlg.title = "Animated Gif "..anim.frame.."/"..#anim dlg.play_bt.image="IUP_MediaPlay" dlg.play_bt.title="Play" t.run="NO" iup.Update(cnv) end function set_frame(f) - frame = f - if frame > #images then - frame = #images + anim.frame = f + if anim.frame > #anim.images then + anim.frame = #anim.images end - if frame < 1 then - frame = 1 + if anim.frame < 1 then + anim.frame = 1 end stop_timer() end function t:action_cb() - frame = frame + 1 - if frame == #images+1 then - frame = 1 + anim.frame = anim.frame + 1 + if anim.frame == #anim.images+1 then + anim.frame = 1 end start_timer() @@ -111,10 +135,12 @@ end function cnv:action()-- called everytime the IUP canvas needs to be repainted canvas:Activate() - if (images.disposal[frame] == "RBACK") then + if (anim.disposal[anim.frame] == "RBACK") then canvas:Clear() end - images[frame]:cdCanvasPutImageRect(canvas, 0, 0, 0, 0, 0, 0, 0, 0) -- use default values + local x = anim.pos[anim.frame].x + local y = anim.ScreenHeight - anim.pos[anim.frame].y - anim.images[anim.frame]:Height() + anim.images[anim.frame]:cdCanvasPutImageRect(canvas, x, y, 0, 0, 0, 0, 0, 0) -- use default values end function cnv:resize_cb() @@ -138,17 +164,17 @@ end buts = iup.hbox{ iup.button{title="First", image="IUP_MediaGotoBegin", action=function(self) set_frame(1) end}, - iup.button{title="Previous", image="IUP_MediaRewind", action=function(self) set_frame(frame-1) end}, + iup.button{title="Previous", image="IUP_MediaRewind", action=function(self) set_frame(anim.frame-1) end}, iup.button{title="Pause", image="IUP_MediaPause", action=function(self) if (t.run=="YES") then stop_timer() else start_timer() end end}, - iup.button{title="Next", image="IUP_MediaForward", action=function(self) set_frame(frame+1) end}, - iup.button{title="Last", image="IUP_MediaGoToEnd", action=function(self) set_frame(#images) end}, + iup.button{title="Next", image="IUP_MediaForward", action=function(self) set_frame(anim.frame+1) end}, + iup.button{title="Last", image="IUP_MediaGoToEnd", action=function(self) set_frame(#anim) end}, } dlg = iup.dialog{iup.vbox{cnv, buts},title="Animated Gif", margin="5x5", gap=10} dlg.play_bt = dlg[1][2][3] function dlg:close_cb() iup.Destroy(t) - images=nil --Destroys will be called by the garbage collector + anim=nil --Destroys will be called by the garbage collector canvas:Kill() self:destroy() return iup.IGNORE -- because we destroy the dialog |