resize program

src/ltui/panel.lua

@@ -89,17 +89,8 @@ function panel:view(name)
     return self._VIEWS_CACHE[name]
 end
 
--- insert view
+-- center view
-function panel:insert(v, opt)
+function panel:center(v, opt)
-
-    -- check
-    assert(not v:parent() or v:parent() == self)
-    assert(not self:view(v:name()), v:name() .. " has been in this panel!")
-
-    -- this view has been inserted into this panel? remove it first
-    if v:parent() == self then
-        self:remove(v)
-    end
 
     -- center this view if centerx or centery are set
     local bounds = v:bounds()
@@ -117,6 +108,22 @@ function panel:insert(v, opt)
         bounds:move(org.x - bounds.sx, org.y - bounds.sy)
         v:invalidate(true)
     end
+end
+
+-- insert view
+function panel:insert(v, opt)
+
+    -- check
+    assert(not v:parent() or v:parent() == self)
+    assert(not self:view(v:name()), v:name() .. " has been in this panel!")
+
+    -- this view has been inserted into this panel? remove it first
+    if v:parent() == self then
+        self:remove(v)
+    end
+
+    -- center this view if centerx or centery are set
+    self:center(v, opt)
 
     -- insert this view
     self._VIEWS:push(v)
@@ -315,18 +322,13 @@ end
 -- resize panel 
 function panel:resize()
 
-    -- resize panel?
+    -- resize panel
-    local resize = self:state("resize")
-    if resize then
     view.resize(self)
-    end
 
     -- resize all child views
     for v in self:views() do
-        if resize then
         v:state_set("resize", true)
-        end
+        if v:state("visible") then
-        if v:state("visible") and (v:state("resize") or v:type() == "panel") then
             v:resize()
         end
     end

src/ltui/program.lua

@@ -18,11 +18,6 @@
 -- @file        program.lua
 --
 
---[[ Console User Interface (cui) ]-----------------------------------------
-Author: Tiago Dionizio (tiago.dionizio AT gmail.com)
-$Id: program.lua 18 2007-06-21 20:43:52Z tngd $
---------------------------------------------------------------------------]]
-
 -- load modules
 local log    = require("ltui/base/log")
 local rect   = require("ltui/rect")
@@ -162,10 +157,22 @@ function program:event_on(e)
         focused_view = parent
     end
 
-    -- quit program?
+    -- do event
-    if e.type == event.ev_keyboard and e.key_name == "CtrlC" then
+    if e.type == event.ev_keyboard then
+        -- resize?
+        if e.key_name == "Resize" then
+            self:bounds_set(rect {0, 0, curses.columns(), curses.lines()})
+            return true
+        -- refresh?
+        elseif e.key_name == "Refresh" then
+            self:invalidate() 
+            return true
+        -- ctrl+c? quit program
+        elseif e.key_name == "CtrlC" then
             self:send("cm_exit")
             return true
+        end
+    -- quit program?
     elseif event.is_command(e, "cm_exit") then
         self:quit()
         return true
@@ -220,7 +227,9 @@ function program:loop(argv)
         end
 
         -- resize views
+        if self:state("resize") then
             self:resize()
+        end
 
         -- draw views
         self:draw()

tests/dialog.lua

@@ -46,49 +46,89 @@ function demo:init()
     -- init background
     self:background_set("blue")
 
-    -- read help content
+    -- init main dialog
+    self:insert(self:dialog_main())
+
+    -- init input dialog
+    self:insert(self:dialog_input(), {centerx = true, centery = true})
+
+    -- init tips dialog
+    self:insert(self:dialog_tips(), {centerx = true, centery = true})
+end
+
+-- main dialog
+function demo:dialog_main()
+    local dialog_main = self._DIALOG_MAIN
+    if not dialog_main then
+        dialog_main = boxdialog:new("dialog.main", rect {1, 1, self:width() - 1, self:height() - 1}, "main dialog")
+        dialog_main:text():text_set("The project focuses on making development and building easier and provides many features (.e.g package, install, plugin, macro, action, option, task ...), so that any developer can quickly pick it up and enjoy the productivity boost when developing and building project.")
+        dialog_main:button_add("tips", "< Tips >", function (v) self:view("dialog.tips"):show(true, {focused = true}) end)
+        dialog_main:button_add("input", "< Input >", function (v) self:view("dialog.input"):show(true, {focused = true}) end)
+        dialog_main:button_add("help", "< Help >", function (v) self:insert(self:dialog_help()) end)
+        dialog_main:button_add("quit", "< Quit >", "cm_quit")
+        self._DIALOG_MAIN = dialog_main
+    end
+    return dialog_main
+end
+
+-- help dialog
+function demo:dialog_help()
+    local dialog_help = self._DIALOG_HELP
+    if not dialog_help then
+        dialog_help = textdialog:new("dialog.help", rect {1, 1, self:width() - 1, self:height() - 1}, "README")
         local helptext = nil
         local file = io.open("./LICENSE.md", 'r')
         if file then
             helptext = file:read("*a")
             file:close()
         end
-
-    -- init help dialog
-    local dialog_help = textdialog:new("dialog.help", rect {1, 1, self:width() - 1, self:height() - 1}, "README")
         if helptext then
             dialog_help:text():text_set(helptext)
         end
         dialog_help:button_add("exit", "< Exit >", function (v) self:remove(dialog_help) end)
+        self._DIALOG_HELP = dialog_help
+    end
+    return dialog_help
+end
 
-    -- init main dialog
+-- input dialog
-    local dialog_main = boxdialog:new("dialog.main", rect {1, 1, self:width() - 1, self:height() - 1}, "main dialog")
+function demo:dialog_input()
-    dialog_main:text():text_set("The project focuses on making development and building easier and provides many features (.e.g package, install, plugin, macro, action, option, task ...), so that any developer can quickly pick it up and enjoy the productivity boost when developing and building project.")
+    local dialog_input = self._DIALOG_INPUT
-    dialog_main:button_add("tips", "< Tips >", function (v) self:view("dialog.tips"):show(true, {focused = true}) end)
+    if not dialog_input then
-    dialog_main:button_add("input", "< Input >", function (v) self:view("dialog.input"):show(true, {focused = true}) end)
+        dialog_input = inputdialog:new("dialog.input", rect {0, 0, 50, 8}):background_set(self:dialog_main():frame():background())
-    dialog_main:button_add("help", "< Help >", function (v) self:insert(dialog_help) end)
-    dialog_main:button_add("quit", "< Quit >", "cm_quit")
-    self:insert(dialog_main)
-
-    -- init input dialog
-    local dialog_input = inputdialog:new("dialog.input", rect {0, 0, 50, 8}):background_set(dialog_main:frame():background())
         dialog_input:frame():background_set("cyan")
         dialog_input:text():text_set("please input text:"):textattr_set("red")
         dialog_input:button_add("no", "< No >", function (v) dialog_input:show(false) end)
         dialog_input:button_add("yes", "< Yes >", function (v) 
-                                                  dialog_main:text():text_set(dialog_input:textedit():text())
+                                                      self:dialog_main():text():text_set(dialog_input:textedit():text())
                                                       dialog_input:show(false) 
                                                   end)
-    self:insert(dialog_input, {centerx = true, centery = true})
         dialog_input:show(false)
+        self._DIALOG_INPUT = dialog_input
+    end
+    return dialog_input
+end
 
-    -- init tips dialog
+-- tips dialog
-    local dialog_tips = textdialog:new("dialog.tips", rect {0, 0, 50, 8}):background_set(dialog_main:frame():background())
+function demo:dialog_tips()
+    local dialog_tips = self._DIALOG_TIPS
+    if not dialog_tips then
+        dialog_tips = textdialog:new("dialog.tips", rect {0, 0, 50, 8}):background_set(self:dialog_main():frame():background())
         dialog_tips:frame():background_set("cyan")
         dialog_tips:text():text_set("hello ltui! (https://tboox.org)\nA cross-platform terminal ui library based on Lua"):textattr_set("red")
         dialog_tips:button_add("yes", "< Yes >", function (v) dialog_tips:show(false) end)
         dialog_tips:button_add("no", "< No >", function (v) dialog_tips:show(false) end)
-    self:insert(dialog_tips, {centerx = true, centery = true})
+        self._DIALOG_TIPS = dialog_tips
+    end
+    return dialog_tips
+end
+
+-- resize dialog 
+function demo:resize()
+    self:dialog_main():bounds_set(rect {1, 1, self:width() - 1, self:height() - 1})
+    self:center(self:dialog_input(), {centerx = true, centery = true})
+    self:center(self:dialog_tips(), {centerx = true, centery = true})
+    application.resize(self)
 end
 
 -- run demo