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    Setting the alpha of a color individually?

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    • CatABCC
      CatABC
      last edited by

      Is it possible to set the alpha of a color individually?
      Instead of first var colour and then float alpha

      var colour, float alpha
      

      //I am a new student at HISE._
      //Windows11 & MacOS Ventura 13.6.7_

      d.healeyD 1 Reply Last reply Reply Quote 0
      • d.healeyD
        d.healey @CatABC
        last edited by

        @CatABC

        Not 100% sure what you mean, you can use Colours.withAlpha().

        Or you can use a hex value like 0x55ffffff

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        • CatABCC
          CatABC @d.healey
          last edited by

          @d-healey I just want to set the Alpha value without adding the color value

          //I am a new student at HISE._
          //Windows11 & MacOS Ventura 13.6.7_

          d.healeyD 1 Reply Last reply Reply Quote 0
          • d.healeyD
            d.healey @CatABC
            last edited by

            @CatABC The alpha value of what?

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            • CatABCC
              CatABC @d.healey
              last edited by

              @d-healey The whole thing is this, I set different keyboard colors for different samplemaps, and after I used the button to change the keyboard key color, when I switched to another samplemap, the keyboard color of the previous samplemap was not overwritten, so I wanted to set the alpha value separately to avoid the problem of color not changing.

              inline function onbtnEnsC1Control(component, value)
              {	
              	if (value){
              		eventId = Synth.playNote(24, 100);
              		Engine.setKeyColour(24, 0x800000FF);
              	}		
              	else
              		Engine.setKeyColour(24, 0x500000FF);
              };
              Content.getComponent("btnEnsC1").setControlCallback(onbtnEnsC1Control);
              

              samplemap1
              73b05393-843c-4497-b812-7e4d218f4291-image.png
              samplemap2
              2bf101f6-f14a-48c5-9f49-9de18375b503-image.png

              In the above two pictures, C0 and G0 of samplemap2 should have no color, and C#3-G#3 should be blue, but they are not changed.

              	if (value == 1){
                      local Ens = [24, 25, 26, 27, 28, 29, 31, 36, 37, 38, 39, 40, 43, 44, 45, 46, 47, 86];			   	
              		for (i = 0; i < Ens.length; i++)
              			{
              				Engine.setKeyColour(Ens[i], 0x500000FF);
              			};
              		local solo = [48, 50, 52, 55, 60, 61, 62, 63, 65, 66, 67, 68, 84];			   	
              		for (i = 0; i < solo.length; i++)
              			{
              				Engine.setKeyColour(solo[i], 0x5000FF00);
              			};
                      }
              	if (value == 2){
                      local Ens2 = [36, 38, 40, 43, 48, 50, 52, 55, 60, 62, 64, 67, 84];		   	
                      		for (i = 0; i < Ens2.length; i++)
                      			{
                      				Engine.setKeyColour(Ens2[i], Colours.withAlpha(Colours.blue, 0.3));
                      			};
                       }
              

              //I am a new student at HISE._
              //Windows11 & MacOS Ventura 13.6.7_

              d.healeyD 1 Reply Last reply Reply Quote 0
              • d.healeyD
                d.healey @CatABC
                last edited by

                @CatABC

                You need to "reset" your keyboard before assigning the new colours. You can do that like this

                for (i = 0; i < 128; i++)
                    Engine.setKeyColour(i, 0x0);
                

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                CatABCC 1 Reply Last reply Reply Quote 0
                • CatABCC
                  CatABC @d.healey
                  last edited by

                  @d-healey
                  This doesn't seem to work, am I doing something wrong?

                  if (value == 2){
                      for (i = 0; i < 128; i++)
                            {
                      		Engine.setKeyColour(i, 0x0);
                      	   }
                  
                       local Ens2 = [36, 38, 40, 43, 48, 50, 52, 55, 60, 62, 64, 67, 84];		   	
                             for (i = 0; i < Ens2.length; i++)
                          	{
                          		Engine.setKeyColour(Ens2[i], Colours.withAlpha(Colours.blue, 0.3));
                          	};
                           }
                  

                  5096f792-7d50-440a-b3d2-8897f2fb614a-image.png

                  //I am a new student at HISE._
                  //Windows11 & MacOS Ventura 13.6.7_

                  d.healeyD 1 Reply Last reply Reply Quote 0
                  • d.healeyD
                    d.healey @CatABC
                    last edited by

                    @CatABC You don't need to put the reset within the if statement, it can go before all of your keyboard colouring code.

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                    CatABCC 1 Reply Last reply Reply Quote 0
                    • CatABCC
                      CatABC @d.healey
                      last edited by CatABC

                      @d-healey Unfortunately, he still has the same result. My guess is that because I used a button to trigger the color change, when the button value does not change, it will continue to keep the button callback result.
                      What should I write in the else of the button to make it return to the color before it changed?

                      //I am a new student at HISE._
                      //Windows11 & MacOS Ventura 13.6.7_

                      d.healeyD 1 Reply Last reply Reply Quote 0
                      • d.healeyD
                        d.healey @CatABC
                        last edited by

                        @CatABC can you make a minimal snippet that shows the problem?

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                        • CatABCC
                          CatABC @d.healey
                          last edited by

                          @d-healey ChangeColor.zip
                          The code snippet didn't seem to show the problem, so I uploaded a project, and along the way I found the source of the problem. When the button is in a Panel, it causes the problem.

                          //I am a new student at HISE._
                          //Windows11 & MacOS Ventura 13.6.7_

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                          • CatABCC
                            CatABC @d.healey
                            last edited by

                            @d-healey There is no problem switching with Combobox, but there is a problem with switching with preset browsers

                            //I am a new student at HISE._
                            //Windows11 & MacOS Ventura 13.6.7_

                            d.healeyD 1 Reply Last reply Reply Quote 0
                            • d.healeyD
                              d.healey @CatABC
                              last edited by

                              @CatABC This is what I see in your project, looks like it's working?

                              Peek 2025-01-14 15-09.gif

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                              • CatABCC
                                CatABC @d.healey
                                last edited by

                                @d-healey Oh, sorry, I forgot to save the latest data when I was testing the code snippet,
                                ChangeColor2.zip
                                1.gif

                                //I am a new student at HISE._
                                //Windows11 & MacOS Ventura 13.6.7_

                                d.healeyD 1 Reply Last reply Reply Quote 0
                                • d.healeyD
                                  d.healey @CatABC
                                  last edited by

                                  @CatABC Turn off saveInPreset for your button.

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                                  CatABCC 1 Reply Last reply Reply Quote 0
                                  • CatABCC
                                    CatABC @d.healey
                                    last edited by

                                    @d-healey Ahaha,god,It's so simple
                                    Feeling mine so stupid。,Thanks very much David, you solved my problem again.😙 😙 😙

                                    //I am a new student at HISE._
                                    //Windows11 & MacOS Ventura 13.6.7_

                                    1 Reply Last reply Reply Quote 1
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