John Mitchell / lpc4088_displaymodule_GC500_2_5inch

Repository for import to local machine

Dependencies:   DMBasicGUI DMSupport

SimplifiedTouchListener.cpp@8:26e49e6955bd, 2017-07-31 (annotated)

Committer:
jmitc91516
Date:
Mon Jul 31 15:37:57 2017 +0000
Revision:
8:26e49e6955bd
Parent:
1:a5258871b33d 
Method ramp scrolling improved, and more bitmaps moved to QSPI memory

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmitc91516 1:a5258871b33d 1 #include "SimplifiedTouchListener.h"
jmitc91516 1:a5258871b33d 2
jmitc91516 1:a5258871b33d 3
jmitc91516 1:a5258871b33d 4
jmitc91516 1:a5258871b33d 5 /*
jmitc91516 1:a5258871b33d 6 This class handles the touch panel on the LPC4088.
jmitc91516 1:a5258871b33d 7
jmitc91516 1:a5258871b33d 8 Unlike the original TouchListener class, all it does in response to the user touching the screen
jmitc91516 1:a5258871b33d 9 is to raise a thread signal, nothing else.
jmitc91516 1:a5258871b33d 10 */
jmitc91516 1:a5258871b33d 11
jmitc91516 1:a5258871b33d 12 // Note that SimplifiedTouchListener is a singleton - we do not need or want there to be more than one instance of it
jmitc91516 1:a5258871b33d 13 // (there is only one board, and only one touch panel)
jmitc91516 1:a5258871b33d 14 SimplifiedTouchListener * SimplifiedTouchListener::theSimplifiedTouchListener = NULL;
jmitc91516 1:a5258871b33d 15
jmitc91516 1:a5258871b33d 16 #ifdef GET_TOUCH_COORDS_AT_TOUCH_TIME // defined in header
jmitc91516 1:a5258871b33d 17 touch_coordinate_t SimplifiedTouchListener::touchCoords;
jmitc91516 1:a5258871b33d 18 #endif // GET_TOUCH_COORDS_AT_TOUCH_TIME
jmitc91516 1:a5258871b33d 19
jmitc91516 1:a5258871b33d 20 #ifdef MULTI_TOUCH_TECHNIQUE_5
jmitc91516 1:a5258871b33d 21 Timer SimplifiedTouchListener::touchTimer;
jmitc91516 1:a5258871b33d 22 const uint32_t SimplifiedTouchListener::touchIntervalMilliSec = 500; // i.e. 0.5 second
jmitc91516 1:a5258871b33d 23 #endif
jmitc91516 1:a5258871b33d 24
jmitc91516 1:a5258871b33d 25
jmitc91516 1:a5258871b33d 26 // Singleton class - return the one and only instance, first creating it if necessary
jmitc91516 1:a5258871b33d 27 SimplifiedTouchListener *SimplifiedTouchListener::GetInstance(osThreadId newAppThread, TouchPanel* newTouchPanel)
jmitc91516 1:a5258871b33d 28 {
jmitc91516 1:a5258871b33d 29 if (theSimplifiedTouchListener == NULL) {
jmitc91516 1:a5258871b33d 30 theSimplifiedTouchListener = new SimplifiedTouchListener(newAppThread, newTouchPanel);
jmitc91516 1:a5258871b33d 31 }
jmitc91516 1:a5258871b33d 32 return theSimplifiedTouchListener;
jmitc91516 1:a5258871b33d 33 }
jmitc91516 1:a5258871b33d 34
jmitc91516 1:a5258871b33d 35 // Singleton class - private constructor
jmitc91516 1:a5258871b33d 36 SimplifiedTouchListener::SimplifiedTouchListener(osThreadId newAppThread, TouchPanel* newTouchPanel)
jmitc91516 1:a5258871b33d 37 {
jmitc91516 1:a5258871b33d 38 gotTouchEvent = false;
jmitc91516 1:a5258871b33d 39
jmitc91516 1:a5258871b33d 40 appThread = newAppThread;
jmitc91516 1:a5258871b33d 41 touchPanel = newTouchPanel;
jmitc91516 1:a5258871b33d 42
jmitc91516 1:a5258871b33d 43 #define DO_THE_ATTACH
jmitc91516 1:a5258871b33d 44 #ifdef DO_THE_ATTACH
jmitc91516 1:a5258871b33d 45 functionPointer.attach(&ListenerFunction);
jmitc91516 1:a5258871b33d 46 touchPanel->setListener(&functionPointer);
jmitc91516 1:a5258871b33d 47 #endif // DO_THE_ATTACH
jmitc91516 1:a5258871b33d 48
jmitc91516 1:a5258871b33d 49 #ifdef MULTI_TOUCH_TECHNIQUE_5
jmitc91516 1:a5258871b33d 50 touchTimer.stop();
jmitc91516 1:a5258871b33d 51 touchTimer.reset();
jmitc91516 1:a5258871b33d 52 touchTimer.start();
jmitc91516 1:a5258871b33d 53 #endif
jmitc91516 1:a5258871b33d 54 }
jmitc91516 1:a5258871b33d 55
jmitc91516 1:a5258871b33d 56
jmitc91516 1:a5258871b33d 57 /*
jmitc91516 1:a5258871b33d 58 This is the function that the system invokes whenever it sees that the user has touched the LPC4088 touch panel.
jmitc91516 1:a5258871b33d 59 In response, we set a thread signal - nothing else. Whatever is waiting on this thread signal can then decide
jmitc91516 1:a5258871b33d 60 how to respond to the touch event.
jmitc91516 1:a5258871b33d 61 */
jmitc91516 1:a5258871b33d 62 void SimplifiedTouchListener::ListenerFunction(void)
jmitc91516 1:a5258871b33d 63 {
jmitc91516 1:a5258871b33d 64 #if defined MULTI_TOUCH_TECHNIQUE_5
jmitc91516 1:a5258871b33d 65 if(touchTimer.read_ms() > touchIntervalMilliSec) {
jmitc91516 1:a5258871b33d 66 #endif
jmitc91516 1:a5258871b33d 67 if (theSimplifiedTouchListener != NULL) {
jmitc91516 1:a5258871b33d 68 theSimplifiedTouchListener->gotTouchEvent = true;
jmitc91516 1:a5258871b33d 69 #ifdef GET_TOUCH_COORDS_AT_TOUCH_TIME // Make sure the touch coords match the current touch event
jmitc91516 1:a5258871b33d 70 theSimplifiedTouchListener->touchPanel->read(touchCoords); // touchCoords passed by reference (see TouchPanel.h)
jmitc91516 1:a5258871b33d 71 #endif // GET_TOUCH_COORDS_AT_TOUCH_TIME
jmitc91516 1:a5258871b33d 72 osSignalSet(theSimplifiedTouchListener->appThread, TOUCH_EVENT);
jmitc91516 1:a5258871b33d 73 }
jmitc91516 1:a5258871b33d 74 #if defined MULTI_TOUCH_TECHNIQUE_5
jmitc91516 1:a5258871b33d 75 touchTimer.stop();
jmitc91516 1:a5258871b33d 76 touchTimer.reset();
jmitc91516 1:a5258871b33d 77 touchTimer.start();
jmitc91516 1:a5258871b33d 78 }
jmitc91516 1:a5258871b33d 79 #endif
jmitc91516 1:a5258871b33d 80 }
jmitc91516 1:a5258871b33d 81
jmitc91516 1:a5258871b33d 82 /*
jmitc91516 1:a5258871b33d 83 Tells the caller whether or not we got a touch event.
jmitc91516 1:a5258871b33d 84
jmitc91516 1:a5258871b33d 85 Caller may have applied a timeout to his signal_wait, so when signal_wait returns, cannot tell
jmitc91516 1:a5258871b33d 86 if it did so because it got the signal or because it timed out. Calling this function will tell him.
jmitc91516 1:a5258871b33d 87
jmitc91516 1:a5258871b33d 88 Note that this is a 'once per touch event' call - we clear the 'got touch event' flag in this function.
jmitc91516 1:a5258871b33d 89 Until the next touch event, subsequent calls will return false.
jmitc91516 1:a5258871b33d 90
jmitc91516 1:a5258871b33d 91 If we got a touch event, we return the coordinates in the arguments provided.
jmitc91516 1:a5258871b33d 92 If not, we do nothing to the arguments.
jmitc91516 1:a5258871b33d 93
jmitc91516 1:a5258871b33d 94 Args: pointers to variables to contain the X, Y and Z touch coordinates (the touch panel returns all three)
jmitc91516 1:a5258871b33d 95
jmitc91516 1:a5258871b33d 96 Return value: true if this is the first call after a touch event, false otherwise.
jmitc91516 1:a5258871b33d 97 */
jmitc91516 1:a5258871b33d 98 bool SimplifiedTouchListener::GotTouchEvent(short *x, short *y, short *z)
jmitc91516 1:a5258871b33d 99 {
jmitc91516 1:a5258871b33d 100 if(gotTouchEvent) {
jmitc91516 1:a5258871b33d 101 gotTouchEvent = false;
jmitc91516 1:a5258871b33d 102
jmitc91516 1:a5258871b33d 103 #ifndef GET_TOUCH_COORDS_AT_TOUCH_TIME
jmitc91516 1:a5258871b33d 104 touch_coordinate_t touchCoords;
jmitc91516 1:a5258871b33d 105 touchPanel->read(touchCoords); // touchCoords passed by reference (see TouchPanel.h)
jmitc91516 1:a5258871b33d 106 #endif // GET_TOUCH_COORDS_AT_TOUCH_TIME
jmitc91516 1:a5258871b33d 107 // #else we have already got the coords, in the touch event listener function
jmitc91516 1:a5258871b33d 108
jmitc91516 1:a5258871b33d 109 *x = touchCoords.x;
jmitc91516 1:a5258871b33d 110 *y = touchCoords.y;
jmitc91516 1:a5258871b33d 111 *z = touchCoords.z;
jmitc91516 1:a5258871b33d 112
jmitc91516 1:a5258871b33d 113 return true;
jmitc91516 1:a5258871b33d 114 }
jmitc91516 1:a5258871b33d 115
jmitc91516 1:a5258871b33d 116 // 'else'...
jmitc91516 1:a5258871b33d 117 return false;
jmitc91516 1:a5258871b33d 118 }
jmitc91516 1:a5258871b33d 119
jmitc91516 1:a5258871b33d 120
jmitc91516 1:a5258871b33d 121 // static TouchListener members
jmitc91516 1:a5258871b33d 122 FunctionPointer SimplifiedTouchListener::functionPointer;
jmitc91516 1:a5258871b33d 123