moved reDraw() to parent

MicroView.h

@@ -226,6 +226,7 @@ private:
 
 class MicroViewWidget {
 public:
+	bool needFirstDraw;
 	MicroViewWidget(uint8_t newx, uint8_t newy, int16_t min, int16_t max);
 	uint8_t getX();
 	uint8_t getY();
@@ -242,6 +243,7 @@ public:
     virtual void draw(){};
     /** \brief Draw widget face overridden by child class. */
 	virtual void drawFace(){};
+	void reDraw();
 	
 private:
 	uint8_t x;
@@ -257,9 +259,9 @@ public:
 	MicroViewSlider(uint8_t newx, uint8_t newy, int16_t min, int16_t max, uint8_t sty);
 	void draw();
 	void drawFace();
+	void reDraw();
 private:
 	uint8_t totalTicks, style;
-	bool needFirstDraw;
 	int16_t prevValue;
 };
 
@@ -269,9 +271,9 @@ public:
 	MicroViewGauge(uint8_t newx, uint8_t newy, int16_t min, int16_t max, uint8_t sty);
 	void draw();
 	void drawFace();
+	void reDraw();
 private:
 	uint8_t radius, style;
-	bool needFirstDraw;
 	int16_t prevValue;
 };
 
@@ -339,6 +341,5 @@ void MVSPIClass::detachInterrupt() {
   SPCR &= ~_BV(SPIE);
 }
 
-
 extern MicroView uView;
 #endif

README.md

@@ -83,6 +83,7 @@ void loop() {
 void setup() {
     uView.begin();
     uView.clear(PAGE);
+	Serial.begin(115200);	// user decide the baud rate
 }
 
 void loop() {
@@ -91,6 +92,11 @@ void loop() {
 </code></pre>
 
 ## History
+**v1.17b: 4th August 2014 by JP Liew**
+* added reDraw() for MicroViewWidget class
+* removed Serial.begin() from uView.begin() so that user can have control
+* added MicroViewWidgetRedraw example
+
 **v1.16b: 3rd August 2014 by czetie**
 * added vertical slider widget
 
@@ -143,7 +149,7 @@ void loop() {
 
 **v1.05b: 6th February 2014 by JP Liew**
 * changed MICROVIEW class name to MicroView
-* created MICROVIEWWIDGET class
+* created MicroViewWidget class
 * added routines to draw widget
 * added slider widget
 * merged MicroViewWidget into MicroView

examples/MicroViewWidgetRedraw/MicroViewWidgetRedraw.ino

@@ -0,0 +1,48 @@
+/*
+	MicroView Arduino Library
+	Copyright (C) 2014 GeekAmmo
+
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <MicroView.h>
+
+MicroViewWidget *widget[2];		// declaring an array of 4 MicroViewWidget
+
+void setup() {
+	uView.begin();		// init and start MicroView
+	widget[0] = new MicroViewSlider(0,0,0,255);		// declare widget0 as a Slider at x=0, y=0, min=0, max=100
+	widget[1] = new MicroViewGauge(32,24,0,255,WIDGETSTYLE0);	// declare widget0 as a Slider at x=0, y=10, min=0, max=150
+	uView.clear(PAGE);	// erase the memory buffer, when next uView.display() is called, the OLED will be cleared.
+}
+
+void loop() {
+
+	widget[0]->reDraw();
+	for (int i=0;i<=255;i++) {
+		widget[0]->setValue(i);		// set value i to widget0
+		uView.display();
+	}
+
+	delay(500);
+	uView.clear(PAGE);
+
+	widget[1]->reDraw();
+	for (int i=0;i<=255;i++) {
+		widget[1]->setValue(i);		// set value i to widget0
+		uView.display();
+	}
+
+	delay(500);
+	uView.clear(PAGE);
+}