package android.widget;
+import android.annotation.Nullable;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.util.IntArray;
import android.util.MathUtils;
import android.util.StateSet;
+import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
+import android.view.ViewParent;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.accessibility.AccessibilityNodeInfo.AccessibilityAction;
private static final String DEFAULT_TITLE_FORMAT = "MMMMy";
private static final String DAY_OF_WEEK_FORMAT = "EEEEE";
+ private static final int SELECTED_HIGHLIGHT_ALPHA = 0xB0;
+
private final TextPaint mMonthPaint = new TextPaint();
private final TextPaint mDayOfWeekPaint = new TextPaint();
private final TextPaint mDayPaint = new TextPaint();
private final Paint mDaySelectorPaint = new Paint();
private final Paint mDayHighlightPaint = new Paint();
+ private final Paint mDayHighlightSelectorPaint = new Paint();
private final Calendar mCalendar = Calendar.getInstance();
private final Calendar mDayOfWeekLabelCalendar = Calendar.getInstance();
private ColorStateList mDayTextColor;
- private int mTouchedItem = -1;
+ private int mHighlightedDay = -1;
+ private int mPreviouslyHighlightedDay = -1;
+ private boolean mIsTouchHighlighted = false;
public SimpleMonthView(Context context) {
this(context, null);
mDayHighlightPaint.setAntiAlias(true);
mDayHighlightPaint.setStyle(Style.FILL);
+ mDayHighlightSelectorPaint.setAntiAlias(true);
+ mDayHighlightSelectorPaint.setStyle(Style.FILL);
+
mDayPaint.setAntiAlias(true);
mDayPaint.setTextSize(dayTextSize);
mDayPaint.setTypeface(Typeface.create(dayTypeface, 0));
final int activatedColor = dayBackgroundColor.getColorForState(
StateSet.get(StateSet.VIEW_STATE_ENABLED | StateSet.VIEW_STATE_ACTIVATED), 0);
mDaySelectorPaint.setColor(activatedColor);
+ mDayHighlightSelectorPaint.setColor(activatedColor);
+ mDayHighlightSelectorPaint.setAlpha(SELECTED_HIGHLIGHT_ALPHA);
invalidate();
}
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
final int touchedItem = getDayAtLocation(x, y);
- if (mTouchedItem != touchedItem) {
- mTouchedItem = touchedItem;
+ mIsTouchHighlighted = true;
+ if (mHighlightedDay != touchedItem) {
+ mHighlightedDay = touchedItem;
+ mPreviouslyHighlightedDay = touchedItem;
invalidate();
}
if (action == MotionEvent.ACTION_DOWN && touchedItem < 0) {
// Fall through.
case MotionEvent.ACTION_CANCEL:
// Reset touched day on stream end.
- mTouchedItem = -1;
+ mHighlightedDay = -1;
+ mIsTouchHighlighted = false;
invalidate();
break;
}
}
@Override
+ public boolean onKeyDown(int keyCode, KeyEvent event) {
+ // We need to handle focus change within the SimpleMonthView because we are simulating
+ // multiple Views. The arrow keys will move between days until there is no space (no
+ // day to the left, top, right, or bottom). Focus forward and back jumps out of the
+ // SimpleMonthView, skipping over other SimpleMonthViews in the parent ViewPager
+ // to the next focusable View in the hierarchy.
+ boolean focusChanged = false;
+ switch (event.getKeyCode()) {
+ case KeyEvent.KEYCODE_DPAD_LEFT:
+ if (event.hasNoModifiers()) {
+ focusChanged = moveOneDay(isLayoutRtl());
+ }
+ break;
+ case KeyEvent.KEYCODE_DPAD_RIGHT:
+ if (event.hasNoModifiers()) {
+ focusChanged = moveOneDay(!isLayoutRtl());
+ }
+ break;
+ case KeyEvent.KEYCODE_DPAD_UP:
+ if (event.hasNoModifiers()) {
+ ensureFocusedDay();
+ if (mHighlightedDay > 7) {
+ mHighlightedDay -= 7;
+ focusChanged = true;
+ }
+ }
+ break;
+ case KeyEvent.KEYCODE_DPAD_DOWN:
+ if (event.hasNoModifiers()) {
+ ensureFocusedDay();
+ if (mHighlightedDay <= mDaysInMonth - 7) {
+ mHighlightedDay += 7;
+ focusChanged = true;
+ }
+ }
+ break;
+ case KeyEvent.KEYCODE_DPAD_CENTER:
+ case KeyEvent.KEYCODE_ENTER:
+ if (mHighlightedDay != -1) {
+ onDayClicked(mHighlightedDay);
+ return true;
+ }
+ break;
+ case KeyEvent.KEYCODE_TAB: {
+ int focusChangeDirection = 0;
+ if (event.hasNoModifiers()) {
+ focusChangeDirection = View.FOCUS_FORWARD;
+ } else if (event.hasModifiers(KeyEvent.META_SHIFT_ON)) {
+ focusChangeDirection = View.FOCUS_BACKWARD;
+ }
+ if (focusChangeDirection != 0) {
+ final ViewParent parent = getParent();
+ // move out of the ViewPager next/previous
+ View nextFocus = this;
+ do {
+ nextFocus = nextFocus.focusSearch(focusChangeDirection);
+ } while (nextFocus != null && nextFocus != this &&
+ nextFocus.getParent() == parent);
+ if (nextFocus != null) {
+ nextFocus.requestFocus();
+ return true;
+ }
+ }
+ break;
+ }
+ }
+ if (focusChanged) {
+ invalidate();
+ return true;
+ } else {
+ return super.onKeyDown(keyCode, event);
+ }
+ }
+
+ private boolean moveOneDay(boolean positive) {
+ ensureFocusedDay();
+ boolean focusChanged = false;
+ if (positive) {
+ if (!isLastDayOfWeek(mHighlightedDay) && mHighlightedDay < mDaysInMonth) {
+ mHighlightedDay++;
+ focusChanged = true;
+ }
+ } else {
+ if (!isFirstDayOfWeek(mHighlightedDay) && mHighlightedDay > 1) {
+ mHighlightedDay--;
+ focusChanged = true;
+ }
+ }
+ return focusChanged;
+ }
+
+ @Override
+ protected void onFocusChanged(boolean gainFocus, @FocusDirection int direction,
+ @Nullable Rect previouslyFocusedRect) {
+ if (gainFocus) {
+ // If we've gained focus through arrow keys, we should find the day closest
+ // to the focus rect. If we've gained focus through forward/back, we should
+ // focus on the selected day if there is one.
+ final int offset = findDayOffset();
+ switch(direction) {
+ case View.FOCUS_RIGHT: {
+ int row = findClosestRow(previouslyFocusedRect);
+ mHighlightedDay = row == 0 ? 1 : (row * DAYS_IN_WEEK) - offset + 1;
+ break;
+ }
+ case View.FOCUS_LEFT: {
+ int row = findClosestRow(previouslyFocusedRect) + 1;
+ mHighlightedDay = Math.min(mDaysInMonth, (row * DAYS_IN_WEEK) - offset);
+ break;
+ }
+ case View.FOCUS_DOWN: {
+ final int col = findClosestColumn(previouslyFocusedRect);
+ final int day = col - offset + 1;
+ mHighlightedDay = day < 1 ? day + DAYS_IN_WEEK : day;
+ break;
+ }
+ case View.FOCUS_UP: {
+ final int col = findClosestColumn(previouslyFocusedRect);
+ final int maxWeeks = (offset + mDaysInMonth) / DAYS_IN_WEEK;
+ final int day = col - offset + (DAYS_IN_WEEK * maxWeeks) + 1;
+ mHighlightedDay = day > mDaysInMonth ? day - DAYS_IN_WEEK : day;
+ break;
+ }
+ }
+ ensureFocusedDay();
+ invalidate();
+ }
+ super.onFocusChanged(gainFocus, direction, previouslyFocusedRect);
+ }
+
+ /**
+ * Returns the row (0 indexed) closest to previouslyFocusedRect or center if null.
+ */
+ private int findClosestRow(@Nullable Rect previouslyFocusedRect) {
+ if (previouslyFocusedRect == null) {
+ return 3;
+ } else {
+ int centerY = previouslyFocusedRect.centerY();
+
+ final TextPaint p = mDayPaint;
+ final int headerHeight = mMonthHeight + mDayOfWeekHeight;
+ final int rowHeight = mDayHeight;
+
+ // Text is vertically centered within the row height.
+ final float halfLineHeight = (p.ascent() + p.descent()) / 2f;
+ final int rowCenter = headerHeight + rowHeight / 2;
+
+ centerY -= rowCenter - halfLineHeight;
+ int row = Math.round(centerY / (float) rowHeight);
+ final int maxDay = findDayOffset() + mDaysInMonth;
+ final int maxRows = (maxDay / DAYS_IN_WEEK) - ((maxDay % DAYS_IN_WEEK == 0) ? 1 : 0);
+
+ row = MathUtils.constrain(row, 0, maxRows);
+ return row;
+ }
+ }
+
+ /**
+ * Returns the column (0 indexed) closest to the previouslyFocusedRect or center if null.
+ * The 0 index is related to the first day of the week.
+ */
+ private int findClosestColumn(@Nullable Rect previouslyFocusedRect) {
+ if (previouslyFocusedRect == null) {
+ return DAYS_IN_WEEK / 2;
+ } else {
+ int centerX = previouslyFocusedRect.centerX() - mPaddingLeft;
+ final int columnFromLeft =
+ MathUtils.constrain(centerX / mCellWidth, 0, DAYS_IN_WEEK - 1);
+ return isLayoutRtl() ? DAYS_IN_WEEK - columnFromLeft - 1: columnFromLeft;
+ }
+ }
+
+ @Override
+ public void getFocusedRect(Rect r) {
+ if (mHighlightedDay > 0) {
+ getBoundsForDay(mHighlightedDay, r);
+ } else {
+ super.getFocusedRect(r);
+ }
+ }
+
+ @Override
+ protected void onFocusLost() {
+ if (!mIsTouchHighlighted) {
+ // Unhighlight a day.
+ mPreviouslyHighlightedDay = mHighlightedDay;
+ mHighlightedDay = -1;
+ invalidate();
+ }
+ super.onFocusLost();
+ }
+
+ /**
+ * Ensure some day is highlighted. If a day isn't highlighted, it chooses the selected day,
+ * if possible, or the first day of the month if not.
+ */
+ private void ensureFocusedDay() {
+ if (mHighlightedDay != -1) {
+ return;
+ }
+ if (mPreviouslyHighlightedDay != -1) {
+ mHighlightedDay = mPreviouslyHighlightedDay;
+ return;
+ }
+ if (mActivatedDay != -1) {
+ mHighlightedDay = mActivatedDay;
+ return;
+ }
+ mHighlightedDay = 1;
+ }
+
+ private boolean isFirstDayOfWeek(int day) {
+ final int offset = findDayOffset();
+ return (offset + day - 1) % DAYS_IN_WEEK == 0;
+ }
+
+ private boolean isLastDayOfWeek(int day) {
+ final int offset = findDayOffset();
+ return (offset + day) % DAYS_IN_WEEK == 0;
+ }
+
+ @Override
protected void onDraw(Canvas canvas) {
final int paddingLeft = getPaddingLeft();
final int paddingTop = getPaddingTop();
}
final boolean isDayActivated = mActivatedDay == day;
+ final boolean isDayHighlighted = mHighlightedDay == day;
if (isDayActivated) {
stateMask |= StateSet.VIEW_STATE_ACTIVATED;
// Adjust the circle to be centered on the row.
- canvas.drawCircle(colCenterRtl, rowCenter, mDaySelectorRadius, mDaySelectorPaint);
- } else if (mTouchedItem == day) {
+ final Paint paint = isDayHighlighted ? mDayHighlightSelectorPaint :
+ mDaySelectorPaint;
+ canvas.drawCircle(colCenterRtl, rowCenter, mDaySelectorRadius, paint);
+ } else if (isDayHighlighted) {
stateMask |= StateSet.VIEW_STATE_PRESSED;
if (isDayEnabled) {
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