#177 improve the touch calibrator for integration into plugins

Author: dave

src/extras/DrawableTouchCalibrator.cpp

@@ -98,13 +98,15 @@ void IoaTouchScreenCalibrator::renderLoop(unsigned int currentValue, RenderPress
 void IoaTouchScreenCalibrator::giveItBack() {
     renderer->giveBackDisplay();
     renderer->setCustomDrawingHandler(lastDrawing);
+    touchScreen->enableCalibration(true);
     lastDrawing = nullptr;
     if(screenPrep != nullptr) screenPrep(true);
 }
 
 void IoaTouchScreenCalibrator::reCalibrateNow() {
     if(screenPrep != nullptr) screenPrep(true);
     lastDrawing = renderer->getCurrentCustomDrawing();
+    touchScreen->enableCalibration(false);
     renderer->setCustomDrawingHandler(this);
     renderer->takeOverDisplay();
 }

src/extras/DrawableTouchCalibrator.h

@@ -70,6 +70,7 @@ namespace tcextras {
             if(!loadCalibration() && presentUiUninitialised) {
                 reCalibrateNow();
             }
+            touchScreen->enableCalibration(true);
         }
 
         /**