| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher3; |
| |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.content.res.Resources; |
| import android.content.res.Resources.Theme; |
| import android.content.res.TypedArray; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.graphics.Region; |
| import android.graphics.Region.Op; |
| import android.graphics.drawable.Drawable; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.util.TypedValue; |
| import android.view.MotionEvent; |
| import android.view.ViewConfiguration; |
| import android.widget.TextView; |
| |
| /** |
| * TextView that draws a bubble behind the text. We cannot use a LineBackgroundSpan |
| * because we want to make the bubble taller than the text and TextView's clip is |
| * too aggressive. |
| */ |
| public class BubbleTextView extends TextView { |
| |
| private static SparseArray<Theme> sPreloaderThemes = new SparseArray<>(2); |
| |
| static final float SHADOW_LARGE_RADIUS = 4.0f; |
| static final float SHADOW_SMALL_RADIUS = 1.75f; |
| static final float SHADOW_Y_OFFSET = 2.0f; |
| static final int SHADOW_LARGE_COLOUR = 0xDD000000; |
| static final int SHADOW_SMALL_COLOUR = 0xCC000000; |
| static final float PADDING_H = 8.0f; |
| static final float PADDING_V = 3.0f; |
| |
| private static final String TAG = "BubbleTextView"; |
| |
| private static final boolean DEBUG = false; |
| |
| private HolographicOutlineHelper mOutlineHelper; |
| private final Canvas mTempCanvas = new Canvas(); |
| private final Rect mTempRect = new Rect(); |
| private boolean mDidInvalidateForPressedState; |
| private Bitmap mPressedOrFocusedBackground; |
| private int mFocusedOutlineColor; |
| private int mFocusedGlowColor; |
| private int mPressedOutlineColor; |
| private int mPressedGlowColor; |
| |
| private float mSlop; |
| |
| private int mTextColor; |
| private final boolean mCustomShadowsEnabled; |
| private boolean mIsTextVisible; |
| |
| private boolean mBackgroundSizeChanged; |
| private final Drawable mBackground; |
| |
| private boolean mStayPressed; |
| private CheckLongPressHelper mLongPressHelper; |
| |
| private CharSequence mDefaultText = ""; |
| |
| public BubbleTextView(Context context) { |
| this(context, null, 0); |
| } |
| |
| public BubbleTextView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public BubbleTextView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| Resources res = context.getResources(); |
| TypedArray a = context.obtainStyledAttributes(attrs, |
| R.styleable.BubbleTextView, defStyle, 0); |
| setGlowColor(a.getColor(R.styleable.BubbleTextView_glowColor, |
| res.getColor(R.color.outline_color))); |
| mCustomShadowsEnabled = a.getBoolean(R.styleable.BubbleTextView_customShadows, true); |
| a.recycle(); |
| |
| if (mCustomShadowsEnabled) { |
| // Draw the background itself as the parent is drawn twice. |
| mBackground = getBackground(); |
| setBackground(null); |
| } else { |
| mBackground = null; |
| } |
| init(); |
| } |
| |
| public void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| // Ensure we are using the right text size |
| LauncherAppState app = LauncherAppState.getInstance(); |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| setTextSize(TypedValue.COMPLEX_UNIT_PX, grid.iconTextSizePx); |
| } |
| |
| private void init() { |
| mLongPressHelper = new CheckLongPressHelper(this); |
| |
| mOutlineHelper = HolographicOutlineHelper.obtain(getContext()); |
| if (mCustomShadowsEnabled) { |
| setShadowLayer(SHADOW_LARGE_RADIUS, 0.0f, SHADOW_Y_OFFSET, SHADOW_LARGE_COLOUR); |
| } |
| } |
| |
| public void applyFromShortcutInfo(ShortcutInfo info, IconCache iconCache, |
| boolean setDefaultPadding) { |
| Bitmap b = info.getIcon(iconCache); |
| LauncherAppState app = LauncherAppState.getInstance(); |
| |
| FastBitmapDrawable iconDrawable = Utilities.createIconDrawable(b); |
| iconDrawable.setGhostModeEnabled(info.isDisabled); |
| |
| setCompoundDrawables(null, iconDrawable, null, null); |
| if (setDefaultPadding) { |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| setCompoundDrawablePadding(grid.iconDrawablePaddingPx); |
| } |
| if (info.contentDescription != null) { |
| setContentDescription(info.contentDescription); |
| } |
| setTag(info); |
| |
| if (info.wasPromise) { |
| applyState(); |
| } |
| } |
| |
| @Override |
| protected boolean setFrame(int left, int top, int right, int bottom) { |
| if (getLeft() != left || getRight() != right || getTop() != top || getBottom() != bottom) { |
| mBackgroundSizeChanged = true; |
| } |
| return super.setFrame(left, top, right, bottom); |
| } |
| |
| @Override |
| protected boolean verifyDrawable(Drawable who) { |
| return who == mBackground || super.verifyDrawable(who); |
| } |
| |
| @Override |
| public void setTag(Object tag) { |
| if (tag != null) { |
| LauncherModel.checkItemInfo((ItemInfo) tag); |
| } |
| super.setTag(tag); |
| if (tag instanceof ShortcutInfo) { |
| final ShortcutInfo info = (ShortcutInfo) tag; |
| mDefaultText = info.title; |
| setText(mDefaultText); |
| } |
| } |
| |
| @Override |
| protected void drawableStateChanged() { |
| if (isPressed()) { |
| // In this case, we have already created the pressed outline on ACTION_DOWN, |
| // so we just need to do an invalidate to trigger draw |
| if (!mDidInvalidateForPressedState) { |
| setCellLayoutPressedOrFocusedIcon(); |
| } |
| } else { |
| // Otherwise, either clear the pressed/focused background, or create a background |
| // for the focused state |
| final boolean backgroundEmptyBefore = mPressedOrFocusedBackground == null; |
| if (!mStayPressed) { |
| mPressedOrFocusedBackground = null; |
| } |
| if (isFocused()) { |
| if (getLayout() == null) { |
| // In some cases, we get focus before we have been layed out. Set the |
| // background to null so that it will get created when the view is drawn. |
| mPressedOrFocusedBackground = null; |
| } else { |
| mPressedOrFocusedBackground = createGlowingOutline( |
| mTempCanvas, mFocusedGlowColor, mFocusedOutlineColor); |
| } |
| mStayPressed = false; |
| setCellLayoutPressedOrFocusedIcon(); |
| } |
| final boolean backgroundEmptyNow = mPressedOrFocusedBackground == null; |
| if (!backgroundEmptyBefore && backgroundEmptyNow) { |
| setCellLayoutPressedOrFocusedIcon(); |
| } |
| } |
| |
| Drawable d = mBackground; |
| if (d != null && d.isStateful()) { |
| d.setState(getDrawableState()); |
| } |
| super.drawableStateChanged(); |
| } |
| |
| /** |
| * Draw this BubbleTextView into the given Canvas. |
| * |
| * @param destCanvas the canvas to draw on |
| * @param padding the horizontal and vertical padding to use when drawing |
| */ |
| private void drawWithPadding(Canvas destCanvas, int padding) { |
| final Rect clipRect = mTempRect; |
| getDrawingRect(clipRect); |
| |
| // adjust the clip rect so that we don't include the text label |
| clipRect.bottom = |
| getExtendedPaddingTop() - (int) BubbleTextView.PADDING_V + getLayout().getLineTop(0); |
| |
| // Draw the View into the bitmap. |
| // The translate of scrollX and scrollY is necessary when drawing TextViews, because |
| // they set scrollX and scrollY to large values to achieve centered text |
| destCanvas.save(); |
| destCanvas.scale(getScaleX(), getScaleY(), |
| (getWidth() + padding) / 2, (getHeight() + padding) / 2); |
| destCanvas.translate(-getScrollX() + padding / 2, -getScrollY() + padding / 2); |
| destCanvas.clipRect(clipRect, Op.REPLACE); |
| draw(destCanvas); |
| destCanvas.restore(); |
| } |
| |
| public void setGlowColor(int color) { |
| mFocusedOutlineColor = mFocusedGlowColor = mPressedOutlineColor = mPressedGlowColor = color; |
| } |
| |
| /** |
| * Returns a new bitmap to be used as the object outline, e.g. to visualize the drop location. |
| * Responsibility for the bitmap is transferred to the caller. |
| */ |
| private Bitmap createGlowingOutline(Canvas canvas, int outlineColor, int glowColor) { |
| final int padding = mOutlineHelper.mMaxOuterBlurRadius; |
| final Bitmap b = Bitmap.createBitmap( |
| getWidth() + padding, getHeight() + padding, Bitmap.Config.ARGB_8888); |
| |
| canvas.setBitmap(b); |
| drawWithPadding(canvas, padding); |
| mOutlineHelper.applyExtraThickExpensiveOutlineWithBlur(b, canvas, glowColor, outlineColor); |
| canvas.setBitmap(null); |
| |
| return b; |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| // Call the superclass onTouchEvent first, because sometimes it changes the state to |
| // isPressed() on an ACTION_UP |
| boolean result = super.onTouchEvent(event); |
| |
| switch (event.getAction()) { |
| case MotionEvent.ACTION_DOWN: |
| // So that the pressed outline is visible immediately when isPressed() is true, |
| // we pre-create it on ACTION_DOWN (it takes a small but perceptible amount of time |
| // to create it) |
| if (mPressedOrFocusedBackground == null) { |
| mPressedOrFocusedBackground = createGlowingOutline( |
| mTempCanvas, mPressedGlowColor, mPressedOutlineColor); |
| } |
| // Invalidate so the pressed state is visible, or set a flag so we know that we |
| // have to call invalidate as soon as the state is "pressed" |
| if (isPressed()) { |
| mDidInvalidateForPressedState = true; |
| setCellLayoutPressedOrFocusedIcon(); |
| } else { |
| mDidInvalidateForPressedState = false; |
| } |
| |
| mLongPressHelper.postCheckForLongPress(); |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| case MotionEvent.ACTION_UP: |
| // If we've touched down and up on an item, and it's still not "pressed", then |
| // destroy the pressed outline |
| if (!isPressed()) { |
| mPressedOrFocusedBackground = null; |
| } |
| |
| mLongPressHelper.cancelLongPress(); |
| break; |
| case MotionEvent.ACTION_MOVE: |
| if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) { |
| mLongPressHelper.cancelLongPress(); |
| } |
| break; |
| } |
| return result; |
| } |
| |
| void setStayPressed(boolean stayPressed) { |
| mStayPressed = stayPressed; |
| if (!stayPressed) { |
| mPressedOrFocusedBackground = null; |
| } |
| setCellLayoutPressedOrFocusedIcon(); |
| } |
| |
| void setCellLayoutPressedOrFocusedIcon() { |
| // Disable pressed state when the icon is in preloader state. |
| if ((getParent() instanceof ShortcutAndWidgetContainer) && |
| !(getCompoundDrawables()[1] instanceof PreloadIconDrawable)){ |
| ShortcutAndWidgetContainer parent = (ShortcutAndWidgetContainer) getParent(); |
| if (parent != null) { |
| CellLayout layout = (CellLayout) parent.getParent(); |
| layout.setPressedOrFocusedIcon((mPressedOrFocusedBackground != null) ? this : null); |
| } |
| } |
| } |
| |
| void clearPressedOrFocusedBackground() { |
| mPressedOrFocusedBackground = null; |
| setCellLayoutPressedOrFocusedIcon(); |
| } |
| |
| Bitmap getPressedOrFocusedBackground() { |
| return mPressedOrFocusedBackground; |
| } |
| |
| int getPressedOrFocusedBackgroundPadding() { |
| return mOutlineHelper.mMaxOuterBlurRadius / 2; |
| } |
| |
| @Override |
| public void draw(Canvas canvas) { |
| if (!mCustomShadowsEnabled) { |
| super.draw(canvas); |
| return; |
| } |
| |
| final Drawable background = mBackground; |
| if (background != null) { |
| final int scrollX = getScrollX(); |
| final int scrollY = getScrollY(); |
| |
| if (mBackgroundSizeChanged) { |
| background.setBounds(0, 0, getRight() - getLeft(), getBottom() - getTop()); |
| mBackgroundSizeChanged = false; |
| } |
| |
| if ((scrollX | scrollY) == 0) { |
| background.draw(canvas); |
| } else { |
| canvas.translate(scrollX, scrollY); |
| background.draw(canvas); |
| canvas.translate(-scrollX, -scrollY); |
| } |
| } |
| |
| // If text is transparent, don't draw any shadow |
| if (getCurrentTextColor() == getResources().getColor(android.R.color.transparent)) { |
| getPaint().clearShadowLayer(); |
| super.draw(canvas); |
| return; |
| } |
| |
| // We enhance the shadow by drawing the shadow twice |
| getPaint().setShadowLayer(SHADOW_LARGE_RADIUS, 0.0f, SHADOW_Y_OFFSET, SHADOW_LARGE_COLOUR); |
| super.draw(canvas); |
| canvas.save(Canvas.CLIP_SAVE_FLAG); |
| canvas.clipRect(getScrollX(), getScrollY() + getExtendedPaddingTop(), |
| getScrollX() + getWidth(), |
| getScrollY() + getHeight(), Region.Op.INTERSECT); |
| getPaint().setShadowLayer(SHADOW_SMALL_RADIUS, 0.0f, 0.0f, SHADOW_SMALL_COLOUR); |
| super.draw(canvas); |
| canvas.restore(); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| |
| if (mBackground != null) mBackground.setCallback(this); |
| Drawable top = getCompoundDrawables()[1]; |
| |
| if (top instanceof PreloadIconDrawable) { |
| ((PreloadIconDrawable) top).applyTheme(getPreloaderTheme()); |
| } |
| mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| if (mBackground != null) mBackground.setCallback(null); |
| } |
| |
| @Override |
| public void setTextColor(int color) { |
| mTextColor = color; |
| super.setTextColor(color); |
| } |
| |
| @Override |
| public void setTextColor(ColorStateList colors) { |
| mTextColor = colors.getDefaultColor(); |
| super.setTextColor(colors); |
| } |
| |
| public void setTextVisibility(boolean visible) { |
| Resources res = getResources(); |
| if (visible) { |
| super.setTextColor(mTextColor); |
| } else { |
| super.setTextColor(res.getColor(android.R.color.transparent)); |
| } |
| mIsTextVisible = visible; |
| } |
| |
| public boolean isTextVisible() { |
| return mIsTextVisible; |
| } |
| |
| @Override |
| protected boolean onSetAlpha(int alpha) { |
| return true; |
| } |
| |
| @Override |
| public void cancelLongPress() { |
| super.cancelLongPress(); |
| |
| mLongPressHelper.cancelLongPress(); |
| } |
| |
| public void applyState() { |
| if (getTag() instanceof ShortcutInfo) { |
| ShortcutInfo info = (ShortcutInfo) getTag(); |
| final int state = info.getState(); |
| |
| final int progressLevel; |
| if (DEBUG) Log.d(TAG, "applying icon state: " + state); |
| |
| switch(state) { |
| case ShortcutInfo.PACKAGE_STATE_DEFAULT: |
| progressLevel = 100; |
| break; |
| |
| case ShortcutInfo.PACKAGE_STATE_INSTALLING: |
| setText(R.string.package_state_installing); |
| progressLevel = info.getProgress(); |
| break; |
| |
| case ShortcutInfo.PACKAGE_STATE_ERROR: |
| case ShortcutInfo.PACKAGE_STATE_UNKNOWN: |
| default: |
| progressLevel = 0; |
| setText(R.string.package_state_unknown); |
| break; |
| } |
| |
| Drawable[] drawables = getCompoundDrawables(); |
| Drawable top = drawables[1]; |
| if (top != null) { |
| final PreloadIconDrawable preloadDrawable; |
| if (top instanceof PreloadIconDrawable) { |
| preloadDrawable = (PreloadIconDrawable) top; |
| } else { |
| preloadDrawable = new PreloadIconDrawable(top, getPreloaderTheme()); |
| setCompoundDrawables(drawables[0], preloadDrawable, drawables[2], drawables[3]); |
| } |
| |
| preloadDrawable.setLevel(progressLevel); |
| if (state == ShortcutInfo.PACKAGE_STATE_DEFAULT) { |
| preloadDrawable.maybePerformFinishedAnimation(); |
| } |
| |
| } |
| } |
| } |
| |
| private Theme getPreloaderTheme() { |
| Object tag = getTag(); |
| int style = ((tag != null) && (tag instanceof ShortcutInfo) && |
| (((ShortcutInfo) tag).container >= 0)) ? R.style.PreloadIcon_Folder |
| : R.style.PreloadIcon; |
| Theme theme = sPreloaderThemes.get(style); |
| if (theme == null) { |
| theme = getResources().newTheme(); |
| theme.applyStyle(style, true); |
| sPreloaderThemes.put(style, theme); |
| } |
| return theme; |
| } |
| } |