[lua] Add shortcuts to change 4 colors

plugins/ColorCycle/main.lua

@@ -1,28 +1,51 @@
 -- Register all Toolbar actions and intialize all UI stuff
 function initUi()
-  app.registerUi({["menu"] = "Cycle through color list", ["callback"] = "cycle", ["accelerator"] = "<Alt>c"});
+  app.registerUi({["menu"] = "Cycle forward through color list", ["callback"] = "cycle", ["accelerator"] = "<Alt>c"});
+  app.registerUi({["menu"] = "Cycle backward through color list", ["callback"] = "cycleBackward", ["accelerator"] = "<Alt>x"});
+  app.registerUi({["menu"] = "Color 1", ["callback"] = "colorOne", ["accelerator"] = "F15"});
+app.registerUi({["menu"] = "Color 2", ["callback"] = "colorTwo", ["accelerator"] = "F16"});
+app.registerUi({["menu"] = "Color 3", ["callback"] = "colorThree", ["accelerator"] = "F17"});
+app.registerUi({["menu"] = "Color 4", ["callback"] = "colorFour", ["accelerator"] = "F18"});
   -- if you want to have multiple color lists you must use the app.registerUi function multiple times
   -- with different callback functions and accelerators
 end
 
--- Predefined colors copied from LoadHandlerHelper.cpp 
--- modify to your needs 
-local colorList = { 
-  {"black", 0x000000},  
-  {"green", 0x008000},
-  {"lightblue", 0x00c0ff}, 
-  {"lightgreen", 0x00ff00}, 
-  {"blue", 0x3333cc},      
-  {"gray", 0x808080},   
-  {"red", 0xff0000},        
-  {"magenta", 0xff00ff},
-  {"orange", 0xff8000}, 
-  {"yellow", 0xffff00},    
-  {"white", 0xffffff}
-}
+-- Predefined colors copied from LoadHandlerHelper.cpp
+-- modify to your needs
+local colorList = {
+  {"chalk", 0x969696},
+  {"blue", 0x268bd2},
+  {"red", 0xdc322f},
+  {"yellow", 0xb58900}
+  }
 
 -- start with first color
-local currentColor = 0 
+local currentColor = 1
+
+function colorOne()
+  currentColor = 1
+
+  app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
+end
+
+function colorTwo()
+  currentColor = 2
+
+  app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
+end
+
+function colorThree()
+  currentColor = 3
+
+  app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
+end
+
+function colorFour()
+  currentColor = 4
+
+  app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
+end
+
 
 function cycle()
   if (currentColor < #colorList) then
@@ -32,7 +55,19 @@ function cycle()
   end
   -- apply color to currently used tool and allow coloring of elements from selections
   app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
-  -- use app.changeColor({["color"] = colorList[currentColor][2], ["tool"] = "pen""}) 
+  -- use app.changeColor({["color"] = colorList[currentColor][2], ["tool"] = "pen""})
+  -- instead if you only want to change pen color
+  -- similarly if you want to change hilighter color or the color from another tool with color capabilities.
+end
+function cycleBackward()
+  if (currentColor >1 ) then
+    currentColor = currentColor - 1
+  else
+    currentColor = #colorList
+  end
+  -- apply color to currently used tool and allow coloring of elements from selections
+  app.changeToolColor({["color"] = colorList[currentColor][2], ["selection"] = true})
+  -- use app.changeColor({["color"] = colorList[currentColor][2], ["tool"] = "pen""})
   -- instead if you only want to change pen color
   -- similarly if you want to change hilighter color or the color from another tool with color capabilities.
 end