1 package com.cooliris.media;
3 import java.util.ArrayList;
4 import java.util.Calendar;
5 import java.util.GregorianCalendar;
6 import java.util.HashMap;
8 import javax.microedition.khronos.opengles.GL11;
10 import android.content.Context;
11 import android.graphics.Bitmap;
12 import android.graphics.BitmapFactory;
13 import android.graphics.Canvas;
14 import android.graphics.NinePatch;
15 import android.graphics.Paint;
16 import android.graphics.PorterDuff;
17 import android.graphics.PorterDuffXfermode;
18 import android.graphics.Rect;
19 import android.util.SparseArray;
20 import android.view.MotionEvent;
21 import com.cooliris.media.RenderView.Lists;
23 public final class TimeBar extends Layer implements MediaFeed.Listener {
24 public static final int HEIGHT = 48;
25 private static final int MARKER_SPACING_PIXELS = 50;
26 private static final float AUTO_SCROLL_MARGIN = 100f;
27 private static final Paint SRC_PAINT = new Paint();
28 private Listener mListener = null;
29 private MediaFeed mFeed = null;
30 private float mTotalWidth = 0f;
31 private float mPosition = 0f;
32 private float mPositionAnim = 0f;
33 private float mScroll = 0f;
34 private float mScrollAnim = 0f;
35 private boolean mInDrag = false;
36 private float mDragX = 0f;
38 private ArrayList<Marker> mMarkers = new ArrayList<Marker>();
39 private ArrayList<Marker> mMarkersCopy = new ArrayList<Marker>();
41 private static final int KNOB = R.drawable.scroller_new;
42 private static final int KNOB_PRESSED = R.drawable.scroller_pressed_new;
43 private final StringTexture.Config mMonthYearFormat = new StringTexture.Config();
44 private final StringTexture.Config mDayFormat = new StringTexture.Config();
45 private final SparseArray<StringTexture> mYearLabels = new SparseArray<StringTexture>();
46 private StringTexture mDateUnknown;
47 private final StringTexture[] mMonthLabels = new StringTexture[12];
48 private final StringTexture[] mDayLabels = new StringTexture[32];
49 private final StringTexture[] mOpaqueDayLabels = new StringTexture[32];
50 private final StringTexture mDot = new StringTexture("¥");
51 private final HashMap<MediaItem, Marker> mTracker = new HashMap<MediaItem, Marker>(1024);
53 private float mTextAlpha = 0.0f;
54 private float mAnimTextAlpha = 0.0f;
55 private boolean mShowTime;
56 private NinePatch mBackground;
57 private Rect mBackgroundRect;
58 private BitmapTexture mBackgroundTexture;
60 public interface Listener {
61 public void onTimeChanged(TimeBar timebar);
64 TimeBar(Context context) {
65 // Setup formatting for text labels.
66 mMonthYearFormat.fontSize = 17f * Gallery.PIXEL_DENSITY;
67 mMonthYearFormat.bold = true;
68 mMonthYearFormat.a = 0.85f;
69 mDayFormat.fontSize = 17f * Gallery.PIXEL_DENSITY;
71 regenerateStringsForContext(context);
72 Bitmap background = BitmapFactory.decodeResource(context.getResources(), R.drawable.popup);
73 mBackground = new NinePatch(background, background.getNinePatchChunk(), null);
74 mBackgroundRect = new Rect();
75 SRC_PAINT.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC));
78 public void regenerateStringsForContext(Context context) {
79 // Create textures for month names.
80 String[] months = context.getResources().getStringArray(R.array.months_abbreviated);
81 for (int i = 0; i < months.length; ++i) {
82 mMonthLabels[i] = new StringTexture(months[i], mMonthYearFormat);
85 for (int i = 0; i <= 31; ++i) {
86 mDayLabels[i] = new StringTexture(Integer.toString(i), mDayFormat);
87 mOpaqueDayLabels[i] = new StringTexture(Integer.toString(i), mMonthYearFormat);
89 mDateUnknown = new StringTexture(context.getResources().getString(R.string.date_unknown), mMonthYearFormat);
90 mBackgroundTexture = null;
93 public void setListener(Listener listener) {
97 public void setFeed(MediaFeed feed, int state, boolean needsLayout) {
103 mScroll = getScrollForPosition(mPosition);
108 protected void onSizeChanged() {
109 mScroll = getScrollForPosition(mPosition);
112 public MediaItem getItem() {
113 synchronized (mMarkers) {
114 // x is between 0 and 1.0f
115 int numMarkers = mMarkers.size();
118 int index = (int) (mPosition * (numMarkers));
119 if (index >= numMarkers)
120 index = numMarkers - 1;
121 Marker marker = mMarkers.get(index);
122 if (marker != null) {
123 // we have to find the index of the media item depending upon
124 // the value of mPosition
125 float deltaBetweenMarkers = 1.0f / numMarkers;
126 float increment = mPosition - index * deltaBetweenMarkers;
127 // if (increment > deltaBetweenMarkers)
128 // increment = deltaBetweenMarkers;
129 // if (increment < 0)
131 ArrayList<MediaItem> items = marker.items;
132 int numItems = items.size();
135 int itemIndex = (int) ((numItems) * increment / deltaBetweenMarkers);
136 if (itemIndex >= numItems)
137 itemIndex = numItems - 1;
138 return marker.items.get(itemIndex);
144 private Marker getAnchorMarker() {
145 synchronized (mMarkers) {
146 // x is between 0 and 1.0f
147 int numMarkers = mMarkers.size();
150 int index = (int) (mPosition * (numMarkers));
151 if (index >= numMarkers)
152 index = numMarkers - 1;
153 Marker marker = mMarkers.get(index);
158 public void setItem(MediaItem item) {
159 Marker marker = mTracker.get(item);
160 if (marker != null) {
161 float markerX = (mTotalWidth == 0.0f) ? 0.0f : marker.x / mTotalWidth;
162 mPosition = Math.max(0.0f, Math.min(1.0f, markerX));
163 mScroll = getScrollForPosition(mPosition);
167 private void layout() {
169 // Clear existing markers.
171 synchronized (mMarkers) {
174 float scrollX = mScroll;
175 // Place markers for every time interval that intersects one of the
177 // Markers for a full month would be for example: Jan 5 10 15 20 25
179 MediaFeed feed = mFeed;
182 int lastDayBlock = -1;
187 if (mState == GridLayer.STATE_GRID_VIEW) {
188 set = feed.getFilteredSet();
190 set = feed.getCurrentSet();
194 if (!feed.hasExpandedMediaSet()) {
197 set = new MediaSet();
198 int numSlots = feed.getNumSlots();
199 for (int i = 0; i < numSlots; ++i) {
200 MediaSet slotSet = feed.getSetForSlot(i);
201 if (slotSet != null) {
202 ArrayList<MediaItem> slotSetItems = slotSet.getItems();
203 if (slotSetItems != null && slotSet.getNumItems() > 0) {
204 MediaItem item = slotSetItems.get(0);
213 GregorianCalendar time = new GregorianCalendar();
214 ArrayList<MediaItem> items = set.getItems();
217 while (j < set.getNumItems()) {
218 final MediaItem item = items.get(j);
221 time.setTimeInMillis(item.mDateTakenInMs);
222 // Detect year rollovers.
223 final int year = time.get(Calendar.YEAR);
224 if (year != lastYear) {
229 Marker marker = null;
230 // Detect month rollovers and emit a month marker.
231 final int month = time.get(Calendar.MONTH);
232 final int dayBlock = time.get(Calendar.DATE);
233 if (month != lastMonth) {
236 marker = new Marker(dx, time.getTimeInMillis(), year, month, dayBlock,
237 Marker.TYPE_MONTH, increment);
238 dx = addMarker(marker);
239 } else if (dayBlock != lastDayBlock) {
240 lastDayBlock = dayBlock;
242 marker = new Marker(dx, time.getTimeInMillis(), year, month, dayBlock,
243 Marker.TYPE_DAY, increment);
244 dx = addMarker(marker);
247 marker = new Marker(dx, time.getTimeInMillis(), year, month, dayBlock, Marker.TYPE_DOT, increment);
248 dx = addMarker(marker);
250 for (int k = 0; k < increment; ++k) {
254 if (index >= items.size())
256 if (index == items.size() - 1 && k != 0)
258 MediaItem thisItem = items.get(index);
259 marker.items.add(thisItem);
260 mTracker.put(thisItem, marker);
262 if (j == items.size() - 1)
265 if (j >= items.size() - 1)
266 j = items.size() - 1;
269 mTotalWidth = dx - MARKER_SPACING_PIXELS * Gallery.PIXEL_DENSITY;
271 mPosition = getPositionForScroll(scrollX);
272 mPositionAnim = mPosition;
273 synchronized (mMarkersCopy) {
274 int numMarkers = mMarkers.size();
275 mMarkersCopy.clear();
276 mMarkersCopy.ensureCapacity(numMarkers);
277 for (int i = 0; i < numMarkers; ++i) {
278 mMarkersCopy.add(mMarkers.get(i));
284 private float addMarker(Marker marker) {
285 mMarkers.add(marker);
286 return marker.x + MARKER_SPACING_PIXELS * Gallery.PIXEL_DENSITY;
290 * private float getKnobXForPosition(float position) { return position * (mTotalWidth - mKnob.getWidth()); }
292 * private float getPositionForKnobX(float knobX) { return Math.max(0f, Math.min(1f, knobX / (mTotalWidth - mKnob.getWidth())));
295 * private float getScrollForPosition(float position) { return position * (mTotalWidth - mWidth);// - (1f - 2f * position) *
296 * MARKER_SPACING_PIXELS; }
299 private float getScrollForPosition(float position) {
300 // Map position [0, 1] to scroll [-visibleWidth/2, totalWidth -
302 // This has the effect of centering the scroll knob on screen.
303 float halfWidth = mWidth * 0.5f;
304 float positionInv = 1f - position;
305 float centered = positionInv * -halfWidth + position * (mTotalWidth - halfWidth);
309 private float getPositionForScroll(float scroll) {
310 float halfWidth = mWidth * 0.5f;
311 if (mTotalWidth == 0)
313 return ((scroll + halfWidth) / (mTotalWidth));
316 private float getKnobXForPosition(float position) {
317 return position * mTotalWidth;
320 private float getPositionForKnobX(float knobX) {
321 float normKnobX = (mTotalWidth == 0) ? 0 : knobX / mTotalWidth;
322 return Math.max(0f, Math.min(1f, normKnobX));
326 public boolean update(RenderView view, float dt) {
327 // Update animations.
328 final float ratio = Math.min(1f, 10f * dt);
329 final float invRatio = 1f - ratio;
330 mPositionAnim = ratio * mPosition + invRatio * mPositionAnim;
331 mScrollAnim = ratio * mScroll + invRatio * mScrollAnim;
332 // Handle autoscroll.
334 final float x = getKnobXForPosition(mPosition) - mScrollAnim;
336 float autoScrollMargin = AUTO_SCROLL_MARGIN * Gallery.PIXEL_DENSITY;
337 if (x < autoScrollMargin) {
338 velocity = -(float) Math.pow((1f - x / autoScrollMargin), 2);
339 } else if (x > mWidth - autoScrollMargin) {
340 velocity = (float) Math.pow(1f - (mWidth - x) / autoScrollMargin, 2);
344 mScroll += velocity * 400f * dt;
345 mPosition = getPositionForKnobX(mDragX + mScroll);
350 mAnimTextAlpha = FloatUtils.animate(mAnimTextAlpha, mTextAlpha, dt);
351 return mAnimTextAlpha != mTextAlpha;
355 public void renderBlended(RenderView view, GL11 gl) {
356 final float originX = mX;
357 final float originY = mY;
358 final float scrollOffset = mScrollAnim;
359 final float scrolledOriginX = originX - scrollOffset;
360 final float position = mPositionAnim;
361 final int knobId = mInDrag ? KNOB_PRESSED : KNOB;
362 final Texture knob = view.getResource(knobId);
363 // Draw the scroller knob.
365 if (view.bind(knob)) {
366 final float knobWidth = knob.getWidth();
367 view.draw2D(scrolledOriginX + getKnobXForPosition(position) - knobWidth * 0.5f, originY, 0f, knobWidth, knob
371 if (view.bind(knob)) {
372 final float knobWidth = knob.getWidth();
373 final float knobHeight = knob.getHeight();
374 view.draw2D(scrolledOriginX + getKnobXForPosition(position) - knobWidth * 0.5f, view.getHeight() - knobHeight, 0f,
375 knobWidth, knobHeight);
377 // we draw the current time on top of the knob
378 if (mInDrag || mAnimTextAlpha != 0.0f) {
379 Marker anchor = getAnchorMarker();
380 if (anchor != null) {
381 Texture month = mMonthLabels[anchor.month];
382 Texture day = mOpaqueDayLabels[anchor.day];
383 Texture year = getYearLabel(anchor.year);
384 boolean validDate = true;
385 if (anchor.year <= 1970) {
386 month = mDateUnknown;
391 view.loadTexture(month);
393 view.loadTexture(day);
394 view.loadTexture(year);
396 int numPixelsBufferX = 70;
397 float expectedWidth = month.getWidth()
398 + ((validDate) ? (day.getWidth() + year.getWidth() + 10 * Gallery.PIXEL_DENSITY) : 0);
399 if ((expectedWidth + numPixelsBufferX * Gallery.PIXEL_DENSITY) != mBackgroundRect.right) {
400 mBackgroundRect.right = (int) (expectedWidth + numPixelsBufferX * Gallery.PIXEL_DENSITY);
401 mBackgroundRect.bottom = (int) (month.getHeight() + 20 * Gallery.PIXEL_DENSITY);
403 Bitmap bitmap = Bitmap.createBitmap(mBackgroundRect.right, mBackgroundRect.bottom,
404 Bitmap.Config.ARGB_8888);
405 Canvas canvas = new Canvas();
406 canvas.setBitmap(bitmap);
407 mBackground.draw(canvas, mBackgroundRect, SRC_PAINT);
408 mBackgroundTexture = new BitmapTexture(bitmap);
409 view.loadTexture(mBackgroundTexture);
411 } catch (OutOfMemoryError e) {
415 gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_MODULATE);
416 gl.glColor4f(mAnimTextAlpha, mAnimTextAlpha, mAnimTextAlpha, mAnimTextAlpha);
417 float x = (view.getWidth() - expectedWidth - numPixelsBufferX * Gallery.PIXEL_DENSITY) / 2;
418 float y = (view.getHeight() - 10 * Gallery.PIXEL_DENSITY) * 0.5f;
419 if (mBackgroundTexture != null) {
420 view.draw2D(mBackgroundTexture, x, y);
422 y = view.getHeight() * 0.5f;
423 x = (view.getWidth() - expectedWidth) / 2;
424 view.draw2D(month, x, y);
426 x += month.getWidth() + 3 * Gallery.PIXEL_DENSITY;
427 view.draw2D(day, x, y);
428 x += day.getWidth() + 7 * Gallery.PIXEL_DENSITY;
429 view.draw2D(year, x, y);
431 if (mAnimTextAlpha != 1f) {
432 gl.glColor4f(1f, 1f, 1f, 1f);
434 gl.glTexEnvf(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_REPLACE);
441 public boolean onTouchEvent(MotionEvent event) {
442 // Set position on touch movement.
443 mDragX = event.getX();
444 mPosition = getPositionForKnobX(mDragX + mScroll);
446 // Notify the listener.
447 if (mListener != null) {
448 mListener.onTimeChanged(this);
451 // Update state when touch begins and ends.
452 switch (event.getAction()) {
453 case MotionEvent.ACTION_DOWN:
456 case MotionEvent.ACTION_UP:
457 case MotionEvent.ACTION_CANCEL:
458 // mScroll = getScrollForPosition(mPosition);
461 // Clamp to the nearest marker.
470 public void onFeedChanged(MediaFeed feed, boolean needsLayout) {
474 private static final class Marker {
475 Marker(float x, long time, int year, int month, int day, int type, int expectedCapacity) {
480 this.items = new ArrayList<MediaItem>(expectedCapacity);
483 public static final int TYPE_MONTH = 1;
484 public static final int TYPE_DAY = 2;
485 public static final int TYPE_DOT = 3;
486 public ArrayList<MediaItem> items;
487 public final float x;
488 public final int year;
489 public final int month;
490 public final int day;
494 public void generate(RenderView view, Lists lists) {
495 lists.updateList.add(this);
496 lists.blendedList.add(this);
497 lists.hitTestList.add(this);
500 public void onFeedAboutToChange(MediaFeed feed) {
501 // nothing needs to be done
505 private StringTexture getYearLabel(int year) {
508 StringTexture label = mYearLabels.get(year);
510 label = new StringTexture(Integer.toString(year), mMonthYearFormat);
511 mYearLabels.put(year, label);
516 public boolean isDragged() {