Examples with CallSuper android.annotation.CallSuper used on opensource projects

Example 36 with CallSuper

use of android.annotation.CallSuper in project android_frameworks_base by AOSPA.

the class View method onVisibilityAggregated.

/**
     * Called when the user-visibility of this View is potentially affected by a change
     * to this view itself, an ancestor view or the window this view is attached to.
     *
     * @param isVisible true if this view and all of its ancestors are {@link #VISIBLE}
     *                  and this view's window is also visible
     */
@CallSuper
public void onVisibilityAggregated(boolean isVisible) {
    if (isVisible && mAttachInfo != null) {
        initialAwakenScrollBars();
    }
    final Drawable dr = mBackground;
    if (dr != null && isVisible != dr.isVisible()) {
        dr.setVisible(isVisible, false);
    }
    final Drawable fg = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
    if (fg != null && isVisible != fg.isVisible()) {
        fg.setVisible(isVisible, false);
    }
}

Example 37 with CallSuper

use of android.annotation.CallSuper in project android_frameworks_base by DirtyUnicorns.

the class View method draw.

/**
     * Manually render this view (and all of its children) to the given Canvas.
     * The view must have already done a full layout before this function is
     * called.  When implementing a view, implement
     * {@link #onDraw(android.graphics.Canvas)} instead of overriding this method.
     * If you do need to override this method, call the superclass version.
     *
     * @param canvas The Canvas to which the View is rendered.
     */
@CallSuper
public void draw(Canvas canvas) {
    final int privateFlags = mPrivateFlags;
    final boolean dirtyOpaque = (privateFlags & PFLAG_DIRTY_MASK) == PFLAG_DIRTY_OPAQUE && (mAttachInfo == null || !mAttachInfo.mIgnoreDirtyState);
    mPrivateFlags = (privateFlags & ~PFLAG_DIRTY_MASK) | PFLAG_DRAWN;
    /*
         * Draw traversal performs several drawing steps which must be executed
         * in the appropriate order:
         *
         *      1. Draw the background
         *      2. If necessary, save the canvas' layers to prepare for fading
         *      3. Draw view's content
         *      4. Draw children
         *      5. If necessary, draw the fading edges and restore layers
         *      6. Draw decorations (scrollbars for instance)
         */
    // Step 1, draw the background, if needed
    int saveCount;
    if (!dirtyOpaque) {
        drawBackground(canvas);
    }
    // skip step 2 & 5 if possible (common case)
    final int viewFlags = mViewFlags;
    boolean horizontalEdges = (viewFlags & FADING_EDGE_HORIZONTAL) != 0;
    boolean verticalEdges = (viewFlags & FADING_EDGE_VERTICAL) != 0;
    if (!verticalEdges && !horizontalEdges) {
        // Step 3, draw the content
        if (!dirtyOpaque)
            onDraw(canvas);
        // Step 4, draw the children
        dispatchDraw(canvas);
        // Overlay is part of the content and draws beneath Foreground
        if (mOverlay != null && !mOverlay.isEmpty()) {
            mOverlay.getOverlayView().dispatchDraw(canvas);
        }
        // Step 6, draw decorations (foreground, scrollbars)
        onDrawForeground(canvas);
        // we're done...
        return;
    }
    /*
         * Here we do the full fledged routine...
         * (this is an uncommon case where speed matters less,
         * this is why we repeat some of the tests that have been
         * done above)
         */
    boolean drawTop = false;
    boolean drawBottom = false;
    boolean drawLeft = false;
    boolean drawRight = false;
    float topFadeStrength = 0.0f;
    float bottomFadeStrength = 0.0f;
    float leftFadeStrength = 0.0f;
    float rightFadeStrength = 0.0f;
    // Step 2, save the canvas' layers
    int paddingLeft = mPaddingLeft;
    final boolean offsetRequired = isPaddingOffsetRequired();
    if (offsetRequired) {
        paddingLeft += getLeftPaddingOffset();
    }
    int left = mScrollX + paddingLeft;
    int right = left + mRight - mLeft - mPaddingRight - paddingLeft;
    int top = mScrollY + getFadeTop(offsetRequired);
    int bottom = top + getFadeHeight(offsetRequired);
    if (offsetRequired) {
        right += getRightPaddingOffset();
        bottom += getBottomPaddingOffset();
    }
    final ScrollabilityCache scrollabilityCache = mScrollCache;
    final float fadeHeight = scrollabilityCache.fadingEdgeLength;
    int length = (int) fadeHeight;
    // overlapping fades produce odd-looking artifacts
    if (verticalEdges && (top + length > bottom - length)) {
        length = (bottom - top) / 2;
    }
    // also clip horizontal fades if necessary
    if (horizontalEdges && (left + length > right - length)) {
        length = (right - left) / 2;
    }
    if (verticalEdges) {
        topFadeStrength = Math.max(0.0f, Math.min(1.0f, getTopFadingEdgeStrength()));
        drawTop = topFadeStrength * fadeHeight > 1.0f;
        bottomFadeStrength = Math.max(0.0f, Math.min(1.0f, getBottomFadingEdgeStrength()));
        drawBottom = bottomFadeStrength * fadeHeight > 1.0f;
    }
    if (horizontalEdges) {
        leftFadeStrength = Math.max(0.0f, Math.min(1.0f, getLeftFadingEdgeStrength()));
        drawLeft = leftFadeStrength * fadeHeight > 1.0f;
        rightFadeStrength = Math.max(0.0f, Math.min(1.0f, getRightFadingEdgeStrength()));
        drawRight = rightFadeStrength * fadeHeight > 1.0f;
    }
    saveCount = canvas.getSaveCount();
    int solidColor = getSolidColor();
    if (solidColor == 0) {
        final int flags = Canvas.HAS_ALPHA_LAYER_SAVE_FLAG;
        if (drawTop) {
            canvas.saveLayer(left, top, right, top + length, null, flags);
        }
        if (drawBottom) {
            canvas.saveLayer(left, bottom - length, right, bottom, null, flags);
        }
        if (drawLeft) {
            canvas.saveLayer(left, top, left + length, bottom, null, flags);
        }
        if (drawRight) {
            canvas.saveLayer(right - length, top, right, bottom, null, flags);
        }
    } else {
        scrollabilityCache.setFadeColor(solidColor);
    }
    // Step 3, draw the content
    if (!dirtyOpaque)
        onDraw(canvas);
    // Step 4, draw the children
    dispatchDraw(canvas);
    // Step 5, draw the fade effect and restore layers
    final Paint p = scrollabilityCache.paint;
    final Matrix matrix = scrollabilityCache.matrix;
    final Shader fade = scrollabilityCache.shader;
    if (drawTop) {
        matrix.setScale(1, fadeHeight * topFadeStrength);
        matrix.postTranslate(left, top);
        fade.setLocalMatrix(matrix);
        p.setShader(fade);
        canvas.drawRect(left, top, right, top + length, p);
    }
    if (drawBottom) {
        matrix.setScale(1, fadeHeight * bottomFadeStrength);
        matrix.postRotate(180);
        matrix.postTranslate(left, bottom);
        fade.setLocalMatrix(matrix);
        p.setShader(fade);
        canvas.drawRect(left, bottom - length, right, bottom, p);
    }
    if (drawLeft) {
        matrix.setScale(1, fadeHeight * leftFadeStrength);
        matrix.postRotate(-90);
        matrix.postTranslate(left, top);
        fade.setLocalMatrix(matrix);
        p.setShader(fade);
        canvas.drawRect(left, top, left + length, bottom, p);
    }
    if (drawRight) {
        matrix.setScale(1, fadeHeight * rightFadeStrength);
        matrix.postRotate(90);
        matrix.postTranslate(right, top);
        fade.setLocalMatrix(matrix);
        p.setShader(fade);
        canvas.drawRect(right - length, top, right, bottom, p);
    }
    canvas.restoreToCount(saveCount);
    // Overlay is part of the content and draws beneath Foreground
    if (mOverlay != null && !mOverlay.isEmpty()) {
        mOverlay.getOverlayView().dispatchDraw(canvas);
    }
    // Step 6, draw decorations (foreground, scrollbars)
    onDrawForeground(canvas);
}

Example 38 with CallSuper

use of android.annotation.CallSuper in project android_frameworks_base by DirtyUnicorns.

the class View method onFocusChanged.

/**
     * Called by the view system when the focus state of this view changes.
     * When the focus change event is caused by directional navigation, direction
     * and previouslyFocusedRect provide insight into where the focus is coming from.
     * When overriding, be sure to call up through to the super class so that
     * the standard focus handling will occur.
     *
     * @param gainFocus True if the View has focus; false otherwise.
     * @param direction The direction focus has moved when requestFocus()
     *                  is called to give this view focus. Values are
     *                  {@link #FOCUS_UP}, {@link #FOCUS_DOWN}, {@link #FOCUS_LEFT},
     *                  {@link #FOCUS_RIGHT}, {@link #FOCUS_FORWARD}, or {@link #FOCUS_BACKWARD}.
     *                  It may not always apply, in which case use the default.
     * @param previouslyFocusedRect The rectangle, in this view's coordinate
     *        system, of the previously focused view.  If applicable, this will be
     *        passed in as finer grained information about where the focus is coming
     *        from (in addition to direction).  Will be <code>null</code> otherwise.
     */
@CallSuper
protected void onFocusChanged(boolean gainFocus, @FocusDirection int direction, @Nullable Rect previouslyFocusedRect) {
    if (gainFocus) {
        sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_FOCUSED);
    } else {
        notifyViewAccessibilityStateChangedIfNeeded(AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
    }
    InputMethodManager imm = InputMethodManager.peekInstance();
    if (!gainFocus) {
        if (isPressed()) {
            setPressed(false);
        }
        if (imm != null && mAttachInfo != null && mAttachInfo.mHasWindowFocus) {
            imm.focusOut(this);
        }
        onFocusLost();
    } else if (imm != null && mAttachInfo != null && mAttachInfo.mHasWindowFocus) {
        imm.focusIn(this);
    }
    invalidate(true);
    ListenerInfo li = mListenerInfo;
    if (li != null && li.mOnFocusChangeListener != null) {
        li.mOnFocusChangeListener.onFocusChange(this, gainFocus);
    }
    if (mAttachInfo != null) {
        mAttachInfo.mKeyDispatchState.reset(this);
    }
}

Example 39 with CallSuper

use of android.annotation.CallSuper in project android_frameworks_base by DirtyUnicorns.

the class View method drawableStateChanged.

/**
     * This function is called whenever the state of the view changes in such
     * a way that it impacts the state of drawables being shown.
     * <p>
     * If the View has a StateListAnimator, it will also be called to run necessary state
     * change animations.
     * <p>
     * Be sure to call through to the superclass when overriding this function.
     *
     * @see Drawable#setState(int[])
     */
@CallSuper
protected void drawableStateChanged() {
    final int[] state = getDrawableState();
    boolean changed = false;
    final Drawable bg = mBackground;
    if (bg != null && bg.isStateful()) {
        changed |= bg.setState(state);
    }
    final Drawable fg = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
    if (fg != null && fg.isStateful()) {
        changed |= fg.setState(state);
    }
    if (mScrollCache != null) {
        final Drawable scrollBar = mScrollCache.scrollBar;
        if (scrollBar != null && scrollBar.isStateful()) {
            changed |= scrollBar.setState(state) && mScrollCache.state != ScrollabilityCache.OFF;
        }
    }
    if (mStateListAnimator != null) {
        mStateListAnimator.setState(state);
    }
    if (changed) {
        invalidate();
    }
}

Example 40 with CallSuper

use of android.annotation.CallSuper in project android_frameworks_base by DirtyUnicorns.

the class View method onVisibilityAggregated.

/**
     * Called when the user-visibility of this View is potentially affected by a change
     * to this view itself, an ancestor view or the window this view is attached to.
     *
     * @param isVisible true if this view and all of its ancestors are {@link #VISIBLE}
     *                  and this view's window is also visible
     */
@CallSuper
public void onVisibilityAggregated(boolean isVisible) {
    if (isVisible && mAttachInfo != null) {
        initialAwakenScrollBars();
    }
    final Drawable dr = mBackground;
    if (dr != null && isVisible != dr.isVisible()) {
        dr.setVisible(isVisible, false);
    }
    final Drawable fg = mForegroundInfo != null ? mForegroundInfo.mDrawable : null;
    if (fg != null && isVisible != fg.isVisible()) {
        fg.setVisible(isVisible, false);
    }
}