Diff: AppUSBMouse.cpp

Revision:

26:f07df116f3c9

Child:

30:e1cded731965

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AppUSBMouse.cpp	Mon Mar 09 16:21:26 2015 +0100
@@ -0,0 +1,136 @@
+/*
+ *  Copyright 2014 Embedded Artists AB
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+#include "mbed.h"
+#include "AppUSBMouse.h"
+#include "lpc_swim_font.h"
+#include "lpc_colors.h"
+#include "USBMouse.h"
+
+/******************************************************************************
+ * Defines and typedefs
+ *****************************************************************************/
+
+/******************************************************************************
+ * Local variables
+ *****************************************************************************/
+
+
+/******************************************************************************
+ * Private functions
+ *****************************************************************************/
+
+void AppUSBMouse::draw()
+{
+    // Prepare fullscreen
+    swim_window_open(_win, 
+                   _disp->width(), _disp->height(),         // full size
+                   (COLOR_T*)_fb,
+                   0,0,_disp->width()-1, _disp->height()-1, // window position and size
+                   0,                                       // border
+                   BLACK, WHITE, BLACK);                    // colors: pen, backgr, forgr
+
+    swim_put_text_centered_win(_win, "(Move PC's cursor with touch display. Press USER button to exit)", _disp->height()-30);
+}
+
+/******************************************************************************
+ * Public functions
+ *****************************************************************************/
+
+AppUSBMouse::AppUSBMouse() : _disp(NULL), _win(NULL), _fb(NULL)
+{
+  _coords[0].z = _coords[1].z = 0;
+}
+
+AppUSBMouse::~AppUSBMouse()
+{
+    teardown();
+}
+
+bool AppUSBMouse::setup()
+{
+    _disp = DMBoard::instance().display();
+    _win = (SWIM_WINDOW_T*)malloc(sizeof(SWIM_WINDOW_T));
+    _fb = _disp->allocateFramebuffer();
+
+    return (_win != NULL && _fb != NULL);
+}
+
+void AppUSBMouse::runToCompletion()
+{
+    bool done = false;
+    draw();
+    void* oldFB = _disp->swapFramebuffer(_fb);
+    
+    DMBoard* board = &DMBoard::instance();
+    RtosLog* log = board->logger();
+    
+    USBMouse mouse;
+    
+    // Wait for touches
+    TouchPanel* touch = DMBoard::instance().touchPanel();
+    int set = 0;
+    touch_coordinate_t* last = NULL;
+    touch_coordinate_t* current = &_coords[set];
+    while(!done) {
+      // wait for a new touch signal (signal is sent from AppLauncher,
+      // which listens for touch events)
+      osEvent evt = Thread::signal_wait(0x1, 50);
+      if (evt.status == osEventTimeout) {
+        if (board->buttonPressed()) {
+          done = true;
+        }
+      } else {
+        if (touch->read(current, 1) == TouchPanel::TouchError_Ok) {
+          if (current->z == 0) {
+            // lifted the finger so we have to think of the next touch
+            // event as the first one (otherwise the relative movement
+            // will be wrong)
+            last = NULL;
+          }
+          if (last != NULL) {
+            int moveX = current->x - last->x;
+            int moveY = current->y - last->y;
+            if (moveX != 0 && moveY != 0) {
+              mouse.move(current->x - last->x, current->y - last->y);
+              //log->printf("{%3d,%3d} -> {%3d, %3d}\n", last->x, last->y, current->x, current->y);
+              //log->printf("move(%4d, %4d)\n", moveX, moveY);
+            }
+          }
+          last = current;
+          current = &_coords[(++set)&1];
+        }
+      }
+    }
+    
+    // User has clicked the button, restore the original FB
+    _disp->swapFramebuffer(oldFB);
+    swim_window_close(_win);
+}
+
+bool AppUSBMouse::teardown()
+{
+    if (_win != NULL) {
+        free(_win);
+        _win = NULL;
+    }
+    if (_fb != NULL) {
+        free(_fb);
+        _fb = NULL;
+    }
+    return true;
+}