Add support for setting the TimeZone of the WeekView

library/src/main/java/com/alamkanak/weekview/WeekView.java

@@ -40,6 +40,7 @@
 import java.util.Comparator;
 import java.util.List;
 import java.util.Locale;
+import java.util.TimeZone;
 
 /**
  * Created by Raquib-ul-Alam Kanak on 7/21/2014.
@@ -138,6 +139,7 @@ private enum Direction {
     private boolean mShowDistinctPastFutureColor = false;
     private boolean mHorizontalFlingEnabled = true;
     private boolean mVerticalFlingEnabled = true;
+    private TimeZone mTimeZone = null;
 
     // Listeners.
     private EventClickListener mEventClickListener;
@@ -627,7 +629,7 @@ else if (mNewHourHeight > mMaxHourHeight)
                     float startY = mHeaderTextHeight + mHeaderRowPadding * 2 + mTimeTextHeight/2 + mHeaderMarginBottom + mCurrentOrigin.y;
 
                     if (sameDay){
-                        Calendar now = Calendar.getInstance();
+                        Calendar now = getInstance();
                         float beforeNow = (now.get(Calendar.HOUR_OF_DAY) + now.get(Calendar.MINUTE)/60.0f) * mHourHeight;
                         canvas.drawRect(start, startY, startPixel + mWidthPerDay, startY+beforeNow, pastPaint);
                         canvas.drawRect(start, startY+beforeNow, startPixel + mWidthPerDay, getHeight(), futurePaint);
@@ -666,7 +668,7 @@ else if (day.before(today)) {
             // Draw the line at the current time.
             if (mShowNowLine && sameDay){
                 float startY = mHeaderTextHeight + mHeaderRowPadding * 2 + mTimeTextHeight/2 + mHeaderMarginBottom + mCurrentOrigin.y;
-                Calendar now = Calendar.getInstance();
+                Calendar now = getInstance();
                 float beforeNow = (now.get(Calendar.HOUR_OF_DAY) + now.get(Calendar.MINUTE)/60.0f) * mHourHeight;
                 canvas.drawLine(start, startY + beforeNow, startPixel + mWidthPerDay, startY + beforeNow, mNowLinePaint);
             }
@@ -700,6 +702,13 @@ else if (day.before(today)) {
 
     }
 
+    private Calendar getInstance() {
+        if(mTimeZone != null)
+            return Calendar.getInstance(mTimeZone);
+        else
+            return Calendar.getInstance();
+    }
+
     /**
      * Get the time and date where the user clicked on.
      * @param x The x position of the touch event.
@@ -1252,7 +1261,7 @@ public String interpretDate(Calendar date) {
 
                 @Override
                 public String interpretTime(int hour) {
-                    Calendar calendar = Calendar.getInstance();
+                    Calendar calendar = getInstance();
                     calendar.set(Calendar.HOUR_OF_DAY, hour);
                     calendar.set(Calendar.MINUTE, 0);
 
@@ -1515,6 +1524,24 @@ public void setDayNameLength(int length) {
         this.mDayNameLength = length;
     }
 
+
+    /**
+     * Get the timeZone this calendar will display in
+     * @return
+     */
+    public TimeZone getTimeZone() {
+        return mTimeZone;
+    }
+
+    /**
+     * Set the timezone that this calendar will dispaly in
+     * @param timeZone
+     */
+    public void setTimeZone(TimeZone timeZone) {
+        this.mTimeZone = timeZone;
+        invalidate();
+    }
+
     public int getOverlappingEventGap() {
         return mOverlappingEventGap;
     }
@@ -1812,7 +1839,7 @@ private boolean forceFinishScroll() {
      * Show today on the week view.
      */
     public void goToToday() {
-        Calendar today = Calendar.getInstance();
+        Calendar today = getInstance();
         goToDate(today);
     }
 
@@ -1836,7 +1863,7 @@ public void goToDate(Calendar date) {
 
         mRefreshEvents = true;
 
-        Calendar today = Calendar.getInstance();
+        Calendar today = getInstance();
         today.set(Calendar.HOUR_OF_DAY, 0);
         today.set(Calendar.MINUTE, 0);
         today.set(Calendar.SECOND, 0);
@@ -1964,7 +1991,7 @@ private boolean isSameDay(Calendar dayOne, Calendar dayTwo) {
      * @return the calendar instance
      */
     private Calendar today(){
-        Calendar today = Calendar.getInstance();
+        Calendar today = getInstance();
         today.set(Calendar.HOUR_OF_DAY, 0);
         today.set(Calendar.MINUTE, 0);
         today.set(Calendar.SECOND, 0);

library/src/main/java/com/alamkanak/weekview/WeekViewEvent.java

@@ -1,6 +1,7 @@
 package com.alamkanak.weekview;
 
 import java.util.Calendar;
+import java.util.TimeZone;
 
 /**
  * Created by Raquib-ul-Alam Kanak on 7/21/2014.
@@ -34,16 +35,23 @@ public WeekViewEvent(){
      * @param endMinute Minute when the event ends.
      */
     public WeekViewEvent(long id, String name, int startYear, int startMonth, int startDay, int startHour, int startMinute, int endYear, int endMonth, int endDay, int endHour, int endMinute) {
+        this(id, name, startYear, startMonth, startDay, startHour, startMinute, null, endYear, endMonth, endDay, endHour, endMinute, null);
+    }
+
+
+    public WeekViewEvent(long id, String name,
+                         int startYear, int startMonth, int startDay, int startHour, int startMinute, TimeZone startTimezone,
+                         int endYear, int endMonth, int endDay, int endHour, int endMinute, TimeZone endTimezone) {
         this.mId = id;
 
-        this.mStartTime = Calendar.getInstance();
+        this.mStartTime = startTimezone == null? Calendar.getInstance() : Calendar.getInstance(startTimezone);
         this.mStartTime.set(Calendar.YEAR, startYear);
         this.mStartTime.set(Calendar.MONTH, startMonth-1);
         this.mStartTime.set(Calendar.DAY_OF_MONTH, startDay);
         this.mStartTime.set(Calendar.HOUR_OF_DAY, startHour);
         this.mStartTime.set(Calendar.MINUTE, startMinute);
 
-        this.mEndTime = Calendar.getInstance();
+        this.mEndTime = endTimezone == null ? Calendar.getInstance() : Calendar.getInstance(endTimezone);
         this.mEndTime.set(Calendar.YEAR, endYear);
         this.mEndTime.set(Calendar.MONTH, endMonth-1);
         this.mEndTime.set(Calendar.DAY_OF_MONTH, endDay);