Tablet app's main screen - the DAW controller
The tablet layout will be shown as the default view for all devices with a screensize of 1024 pixels or greater in any direction and a display resolution smaller than 320dpi. On some small tablets with a high resolution (hdpi) screen you can opt for the phone layout instead - the original Galaxy Tab will be the most popular device falling into this category. Most recent phones (720p or higher resolution screen) will allow to use the tablet layout instead of the default phone one.
The tablet view combines and replaces the phone app's channel strip, mixer and transport views. It pretty closely emulates the original hardware controllers. Other than the phone layout it contains very little adaption to specific DAWs. Basically only the button titles will change when you change the sequencer in the app's setup - an analogy to placing a DAW specific lexan overlay onto a hardware controller (one exception being Pro Tools, see below).
As you will find all buttons on the app that are also found on the original MCU hardware, operation is basically identical with that of a hardware controller. Please refer to the control surface chapters in your DAW's manual to learn about the separate buttons' functionality. When the manual talks about pressing a v-pot you get the same functionality in TouchDAW by double-clicking an encoder.
Some GUI elements with additional functionality are pointed out below. There are a number of ways for navigating the accessible block of eight channels:
The two untitled buttons with the alt and shift icons do not perform any MCU actions, but are internal modifiers. At the time being the alt button switches all encoders to v-select mode (alternatively encoders can be double-clicked at any time for the "press v-pot" functionality). The Shift button switches the mixer part into MIDI mode (see below). The functionality of these buttons is likely going to be extended / changed in future versions.
There is a number of functions in some DAW's MCU implementation that require holding down a button while pressing some other, turn the jog wheel or whatever. This is not really comfortable to do on a touchscreen and simply impossible to do on a resistive screen. TouchDAW tries to address this with buttons that can be locked in pressed state. A button that is lockable shows a little square in the upper left corner and a double-click same as a click / swipe out combination will lock it in pressed state. Once locked the next touch event on the button unlocks it and only then it can again be used as normal. Lockable buttons will execute single clicks with a little delay and you should be aware that they can cause confusion when one forgets to "unpress" them.
As of version 1.6 all buttons in the master section can have their titles, grouping and lockability customized by editing an xml profile. You will find an additional entry titled "Edit selected" in the "Sequencer" menu on the DAW controller setup page. This will bring up the same text editor you might already know from MIDI mode and let you attach your own titles to buttons or change the color coded grouping. All changes only affect the UI, you can not change anything about the MIDI functionality here. The app will remain to be a simple MCU emulation and follow the predefined protocol.
Additionally the editor will let you add your own 'custom DAW profiles' by saving the edited file with a unique name. Again, this will not change anything about the inner workings of the app or the way it interacts with the controlled software. The DAW you create a profile for will still need to support Mackie controllers. How exactly it makes use of such a controller remains to be defined by the DAW's Mackie control implementation and is not changable here.
Custom profiles will always run in MCU mode. It is currently not possible to create alternatively labeled HUI controllers (You would need to edit the Pro Tools preset for that).
Overview of button IDs