Example usage for android.graphics Canvas drawRect

List of usage examples for android.graphics Canvas drawRect

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Introduction

In this page you can find the example usage for android.graphics Canvas drawRect.

Prototype

public void drawRect(float left, float top, float right, float bottom, @NonNull Paint paint)

Source Link

Document

Draw the specified Rect using the specified paint.

Usage

From source file:com.longle1.facedetection.MainActivity.java

@Override
protected void onDraw(Canvas canvas) {
    Paint paint = new Paint();
    paint.setColor(Color.GREEN);// www. ja v  a  2s  .c om
    paint.setTextSize(20);

    String s = "FacePreview - This side up.";
    float textWidth = paint.measureText(s);
    canvas.drawText(s, (getWidth() - textWidth) / 2, 20, paint);

    if (faces != null) {
        paint.setStrokeWidth(5);
        paint.setStyle(Paint.Style.STROKE);
        float scaleX = (float) getWidth() / grayImage.width();
        float scaleY = (float) getHeight() / grayImage.height();
        int total = faces.total();
        for (int i = 0; i < total; i++) {
            CvRect r = new CvRect(cvGetSeqElem(faces, i));
            int x = r.x(), y = r.y(), w = r.width(), h = r.height();
            canvas.drawRect(x * scaleX, y * scaleY, (x + w) * scaleX, (y + h) * scaleY, paint);
        }
    }
}

From source file:com.halloon.android.util.UnderLinePageIndicator.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (mViewPager == null) {
        return;//from ww  w  . j  a  va2 s  . c  om
    }
    final int count = mViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final int paddingLeft = getPaddingLeft();
    final float pageWidth = (getWidth() - paddingLeft - getPaddingRight()) / (1f * count);
    final float exScale = pageWidth * scale;
    final float left = paddingLeft + pageWidth * (mCurrentPage + mPositionOffset) + exScale;
    final float right = left + pageWidth - (exScale * 2);
    final float bottom = getHeight() - getPaddingBottom();
    final float exTop = bottom - lineHeight;
    canvas.drawRect(left, exTop, right, bottom, mPaint);

    mPaintText.setColor(0xFFFFFFFF);
    mPaintText.setTextSize((float) (getHeight() / 2.4F));
    for (int i = 0; i < count; i++) {
        String til = (String) getTitle(i);
        mPaintText.getTextBounds(til, 0, til.length(), bounds);
        canvas.drawText(til, 0, til.length(),
                paddingLeft + (pageWidth * i) + ((pageWidth - bounds.width()) / 2),
                exTop / 2 + (bounds.height() / 2), mPaintText);
    }
}

From source file:com.viewpagerindicator.as.library.indicator.RecyclerUnderlinePageIndicator.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (mRecyclerView == null) {
        return;// w  w  w.  j a va2  s.co m
    }
    final int count = mRecyclerView.getAdapter().getItemCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final int paddingLeft = getPaddingLeft();
    final float pageWidth = (getWidth() - paddingLeft - getPaddingRight()) / (1f * count);
    final float left = paddingLeft + pageWidth * (mCurrentPage + mPositionOffset);
    final float right = left + pageWidth;
    final float top = getPaddingTop();
    final float bottom = getHeight() - getPaddingBottom();
    mPaint.setColor(defaultSelectedColor);
    canvas.drawRect(left, top, right, bottom, mPaint);
}

From source file:angeloid.dreamnarae.SwipeyTabs.java

@Override
protected void dispatchDraw(Canvas canvas) {
    if (mCurrentPos != -1) {
        // calculate the relative position of the fronted tab to set the
        // alpha channel of the tab indicator
        final int tabSelectedTop = getHeight() - getPaddingBottom() - mBottomBarHeight - mTabIndicatorHeight;
        final View currentTab = getChildAt(mCurrentPos);
        final int centerOfTab = (mCurrentTabPos[mCurrentPos] + currentTab.getMeasuredWidth())
                - (currentTab.getMeasuredWidth() / 2);
        final int center = getWidth() / 2;
        final int centerDiv3 = center / 3;
        final float relativePos = 1.0f
                - Math.min(Math.abs((float) (centerOfTab - center) / (float) (centerDiv3)), 1.0f);

        mCachedTabPaint.setAlpha((int) (255 * relativePos));
        canvas.drawRect(mCurrentTabPos[mCurrentPos], tabSelectedTop,
                mCurrentTabPos[mCurrentPos] + currentTab.getMeasuredWidth(),
                tabSelectedTop + mTabIndicatorHeight, mCachedTabPaint);

        // set the correct text colors on the text views
        final int count = mAdapter.getCount();
        for (int i = 0; i < count; i++) {
            final TextView tab = (TextView) getChildAt(i);
            if (mCurrentPos == i) {
                tab.setTextColor(interpolateColor(mBottomBarColor, mTextColor, 1.0f - relativePos));
            } else {
                tab.setTextColor(mTextColor);
            }/*  ww w . j  av  a 2s.co m*/
        }

    }

    super.dispatchDraw(canvas);
}

From source file:com.miqtech.master.client.view.PagerSlidingTabStrip.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (isInEditMode() || tabCount == 0) {
        return;/*ww  w .  ja v a  2s.c o  m*/
    }

    final int height = getHeight();

    // draw indicator line

    rectPaint.setColor(indicatorColor);

    // default: line below current tab
    View currentTab = tabsContainer.getChildAt(currentPosition);
    float lineLeft = currentTab.getLeft();
    float lineRight = currentTab.getRight();

    // if there is an offset, start interpolating left and right coordinates between current and next tab

    // draw underline

    rectPaint.setColor(underlineColor);
    canvas.drawRect(0, height - underlineHeight, tabsContainer.getWidth(), height, rectPaint);

    // draw divider
    rectPaint.setColor(indicatorColor);
    if (currentPositionOffset > 0f && currentPosition < tabCount - 1) {

        View nextTab = tabsContainer.getChildAt(currentPosition + 1);
        final float nextTabLeft = nextTab.getLeft();
        final float nextTabRight = nextTab.getRight();

        lineLeft = (currentPositionOffset * nextTabLeft + (1f - currentPositionOffset) * lineLeft);
        lineRight = (currentPositionOffset * nextTabRight + (1f - currentPositionOffset) * lineRight);
    }

    canvas.drawRect(lineLeft, height - indicatorHeight, lineRight, height, rectPaint);

    dividerPaint.setColor(dividerColor);
    for (int i = 0; i < tabCount - 1; i++) {
        View tab = tabsContainer.getChildAt(i);
        canvas.drawLine(tab.getRight(), dividerPadding, tab.getRight(), height - dividerPadding, dividerPaint);
    }
}

From source file:com.uphyca.recyclerviewcommons.DividerItemDecoration.java

@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
    super.onDraw(c, parent, state);

    final RecyclerView.LayoutManager manager = parent.getLayoutManager();

    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();

    final int childCount = parent.getChildCount();
    if (childCount < 2) {
        return;/*from   w w w  . ja  v  a  2 s  . c o  m*/
    }

    int lastItemViewType = -1;
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.ViewHolder childViewHolder = parent.getChildViewHolder(child);
        final int itemViewType = childViewHolder.getItemViewType();
        if (itemViewType == lastItemViewType) {
            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
            // ViewCompat.getTranslationY() needs for add/delete animation
            final int top = manager.getDecoratedTop(child) - params.topMargin
                    + Math.round(ViewCompat.getTranslationY(child));
            final int bottom = top + dividerHeight;
            c.drawRect(left + dividerMargin, top, right - dividerMargin, bottom, paint);
        }
        lastItemViewType = itemViewType;
    }
}

From source file:com.velocityviewpagerindicator.VelocityUnderlinePageIndicator.java

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    if (mVelocityViewPager == null) {
        return;/*from w  w  w.j  a  v a  2  s .c  o m*/
    }
    final int count = mVelocityViewPager.getAdapter().getCount();
    if (count == 0) {
        return;
    }

    if (mCurrentPage >= count) {
        setCurrentItem(count - 1);
        return;
    }

    final int paddingLeft = getPaddingLeft();
    final float pageWidth = (getWidth() - paddingLeft - getPaddingRight()) / (1f * count);
    final float left = paddingLeft + pageWidth * (mCurrentPage + mPositionOffset);
    final float right = left + pageWidth;
    final float top = getPaddingTop();
    final float bottom = getHeight() - getPaddingBottom();

    Log.e("DEBUG", ">>>LEFT:" + left + " >>>RIGHT: " + right + " >>>>TOP: " + top + " >>>>BOTTOM: " + bottom);

    canvas.drawRect(left, top, right, bottom, mPaint);
}

From source file:com.chess.genesis.view.SwipeTabs.java

@Override
protected void dispatchDraw(final Canvas canvas) {
    if (mCurrentPos != -1) {
        // calculate the relative position of the fronted tab to set the
        // alpha channel of the tab indicator
        final int tabSelectedTop = getHeight() - getPaddingBottom() - mBottomBarHeight - mTabIndicatorHeight;
        final View currentTab = getChildAt(mCurrentPos);
        final int centerOfTab = (mCurrentTabPos[mCurrentPos] + currentTab.getMeasuredWidth())
                - (currentTab.getMeasuredWidth() / 2);
        final int center = getWidth() / 2;
        final int centerDiv3 = center / 3;
        final float relativePos = 1.0f
                - Math.min(Math.abs((float) (centerOfTab - center) / (float) (centerDiv3)), 1.0f);

        mCachedTabPaint.setAlpha((int) (255 * relativePos));
        canvas.drawRect(mCurrentTabPos[mCurrentPos], tabSelectedTop,
                mCurrentTabPos[mCurrentPos] + currentTab.getMeasuredWidth(),
                tabSelectedTop + mTabIndicatorHeight, mCachedTabPaint);

        // set the correct text colors on the text views
        final int count = mAdapter.getCount();
        for (int i = 0; i < count; i++) {
            final TextView tab = (TextView) getChildAt(i);
            if (mCurrentPos == i)
                tab.setTextColor(interpolateColor(mBottomBarColor, mTextColor, 1.0f - relativePos));
            else//  w ww  .  j av a  2s .co m
                tab.setTextColor(mTextColor);
        }

    }
    super.dispatchDraw(canvas);
}

From source file:com.cnh.library.materialdrawer.view.BezelImageView.java

@Override
protected void onDraw(Canvas canvas) {
    if (mBounds == null) {
        return;/*from  w w w  . j av a  2  s .  c o  m*/
    }

    int width = mBounds.width();
    int height = mBounds.height();

    if (width == 0 || height == 0) {
        return;
    }

    if (!mCacheValid || width != mCachedWidth || height != mCachedHeight || isSelected != isPressed) {
        // Need to redraw the cache
        if (width == mCachedWidth && height == mCachedHeight) {
            // Have a correct-sized bitmap cache already allocated. Just erase it.
            mCacheBitmap.eraseColor(0);
        } else {
            // Allocate a new bitmap with the correct dimensions.
            mCacheBitmap.recycle();
            //noinspection AndroidLintDrawAllocation
            mCacheBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            mCachedWidth = width;
            mCachedHeight = height;
        }

        Canvas cacheCanvas = new Canvas(mCacheBitmap);
        if (mMaskDrawable != null) {
            int sc = cacheCanvas.save();
            mMaskDrawable.draw(cacheCanvas);
            if (isSelected) {
                if (mSelectorFilter != null) {
                    mMaskedPaint.setColorFilter(mSelectorFilter);
                } else {
                    mMaskedPaint.setColorFilter(mDesaturateColorFilter);

                }
            } else {
                mMaskedPaint.setColorFilter(null);
            }
            cacheCanvas.saveLayer(mBoundsF, mMaskedPaint,
                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG);
            super.onDraw(cacheCanvas);
            cacheCanvas.restoreToCount(sc);
        } else if (isSelected) {
            int sc = cacheCanvas.save();
            cacheCanvas.drawRect(0, 0, mCachedWidth, mCachedHeight, mBlackPaint);
            if (mSelectorFilter != null) {
                mMaskedPaint.setColorFilter(mSelectorFilter);
            } else {
                mMaskedPaint.setColorFilter(mDesaturateColorFilter);
            }
            cacheCanvas.saveLayer(mBoundsF, mMaskedPaint,
                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG);
            super.onDraw(cacheCanvas);
            cacheCanvas.restoreToCount(sc);
        } else {
            super.onDraw(cacheCanvas);
        }
    }

    // Draw from cache
    canvas.drawBitmap(mCacheBitmap, mBounds.left, mBounds.top, null);

    //remember the previous press state
    isPressed = isPressed();
}

From source file:com.raghu.test.widgets.BezelImageView.java

@SuppressLint("WrongConstant")
@Override//from  ww w .j a  v a 2  s.com
protected void onDraw(Canvas canvas) {
    if (mBounds == null) {
        return;
    }

    int width = mBounds.width();
    int height = mBounds.height();

    if (width == 0 || height == 0) {
        return;
    }

    if (!mCacheValid || width != mCachedWidth || height != mCachedHeight || isSelected != isPressed) {
        // Need to redraw the cache
        if (width == mCachedWidth && height == mCachedHeight) {
            // Have a correct-sized bitmap cache already allocated. Just erase it.
            mCacheBitmap.eraseColor(0);
        } else {
            // Allocate a new bitmap with the correct dimensions.
            mCacheBitmap.recycle();
            //noinspection AndroidLintDrawAllocation
            mCacheBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            mCachedWidth = width;
            mCachedHeight = height;
        }

        Canvas cacheCanvas = new Canvas(mCacheBitmap);
        if (mMaskDrawable != null) {
            int sc = cacheCanvas.save();
            mMaskDrawable.draw(cacheCanvas);
            if (isSelected) {
                if (mSelectorFilter != null) {
                    mMaskedPaint.setColorFilter(mSelectorFilter);
                } else {
                    mMaskedPaint.setColorFilter(mDesaturateColorFilter);

                }
            } else {
                mMaskedPaint.setColorFilter(null);
            }
            cacheCanvas.saveLayer(mBoundsF, mMaskedPaint,
                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG);
            super.onDraw(cacheCanvas);
            cacheCanvas.restoreToCount(sc);
        } else if (isSelected) {
            int sc = cacheCanvas.save();
            cacheCanvas.drawRect(0, 0, mCachedWidth, mCachedHeight, mBlackPaint);
            if (mSelectorFilter != null) {
                mMaskedPaint.setColorFilter(mSelectorFilter);
            } else {
                mMaskedPaint.setColorFilter(mDesaturateColorFilter);
            }
            cacheCanvas.saveLayer(mBoundsF, mMaskedPaint,
                    Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.FULL_COLOR_LAYER_SAVE_FLAG);
            super.onDraw(cacheCanvas);
            cacheCanvas.restoreToCount(sc);
        } else {
            super.onDraw(cacheCanvas);
        }
    }

    // Draw from cache
    canvas.drawBitmap(mCacheBitmap, mBounds.left, mBounds.top, null);

    //remember the previous press state
    isPressed = isPressed();
}