fix(nv14): fix QT simulator display

companion/src/simulation/widgets/lcdwidget.cpp

@@ -21,9 +21,8 @@
 
 #include "lcdwidget.h"
 
-void LcdWidget::setData(unsigned char *buf, int width, int height, int depth)
+void LcdWidget::setData(int width, int height, int depth)
 {
-  lcdBuf = buf;
   lcdWidth = width;
   lcdHeight = height;
   lcdDepth = depth;
@@ -65,11 +64,11 @@ void LcdWidget::makeScreenshot(const QString &fileName)
   }
 }
 
-void LcdWidget::onLcdChanged(bool light)
+void LcdWidget::onLcdChanged(uint8_t* lcdBuf, bool light)
 {
   QMutexLocker locker(&lcdMtx);
   lightEnable = light;
-  memcpy(localBuf, lcdBuf, lcdSize);
+  if (lcdBuf) memcpy(localBuf, lcdBuf, lcdSize);
   if (!redrawTimer.isValid() ||
       redrawTimer.hasExpired(LCD_WIDGET_REFRESH_PERIOD)) {
     update();

companion/src/simulation/widgets/lcdwidget.h

@@ -44,7 +44,6 @@ class LcdWidget : public QWidget
 
   LcdWidget(QWidget *parent = 0) :
       QWidget(parent),
-      lcdBuf(NULL),
       localBuf(NULL),
       lightEnable(false),
       bgDefaultColor(QColor(198, 208, 199))
@@ -58,13 +57,13 @@ class LcdWidget : public QWidget
     }
   }
 
-  void setData(unsigned char *buf, int width, int height, int depth = 1);
+  void setData(int width, int height, int depth = 1);
   void setBgDefaultColor(const QColor &color);
   void setBackgroundColor(const QColor &color);
 
   void makeScreenshot(const QString &fileName);
 
-  void onLcdChanged(bool light);
+  void onLcdChanged(uint8_t* lcdBuf, bool light);
 
  signals:
   void touchEvent(int type, int x, int y);
@@ -75,7 +74,6 @@ class LcdWidget : public QWidget
   int lcdDepth;
   int lcdSize;
 
-  unsigned char *lcdBuf;
   unsigned char *localBuf;
 
   bool lightEnable;