Example usage for android.graphics Canvas concat

Introduction

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

Prototype

public void concat(@Nullable Matrix matrix) 

Source Link

Document

Preconcat the current matrix with the specified matrix.

Usage

From source file:Main.java

private static Bitmap pictureDrawable2Bitmap(PictureDrawable pictureDrawable) {
    float intrinsicWidth = (float) pictureDrawable.getIntrinsicWidth();
    float intrinsicHeight = (float) pictureDrawable.getIntrinsicHeight();
    float f = 1.0f;
    if (intrinsicWidth < 600.0f || intrinsicHeight < 600.0f) {
        f = Math.min(600.0f / intrinsicWidth, 600.0f / intrinsicHeight);
        intrinsicWidth = (intrinsicWidth * f) + 0.5f;
        intrinsicHeight = (intrinsicHeight * f) + 0.5f;
    }//from ww  w  .  j  a  v a  2 s  . c o  m
    Bitmap createBitmap = Bitmap.createBitmap((int) intrinsicWidth, (int) intrinsicHeight, Config.ARGB_8888);
    Canvas canvas = new Canvas(createBitmap);
    Matrix matrix = new Matrix();
    matrix.preScale(f, f);
    canvas.concat(matrix);
    canvas.drawPicture(pictureDrawable.getPicture());
    return createBitmap;
}

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From source file:Main.java

/**
 * Creates a mutable bitmap from subset of source bitmap, transformed by the optional matrix.
 *///from   w  w w  .  j  ava 2s.co  m
private static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m) {
    // Re-implement Bitmap createBitmap() to always return a mutable bitmap.
    Canvas canvas = new Canvas();

    Bitmap bitmap;
    Paint paint;
    if ((m == null) || m.isIdentity()) {
        bitmap = Bitmap.createBitmap(width, height, source.getConfig());
        paint = null;
    } else {
        RectF rect = new RectF(0, 0, width, height);
        m.mapRect(rect);
        bitmap = Bitmap.createBitmap(Math.round(rect.width()), Math.round(rect.height()), source.getConfig());

        canvas.translate(-rect.left, -rect.top);
        canvas.concat(m);

        paint = new Paint(Paint.FILTER_BITMAP_FLAG);
        if (!m.rectStaysRect()) {
            paint.setAntiAlias(true);
        }
    }
    bitmap.setDensity(source.getDensity());
    canvas.setBitmap(bitmap);

    Rect srcBounds = new Rect(x, y, x + width, y + height);
    RectF dstBounds = new RectF(0, 0, width, height);
    canvas.drawBitmap(source, srcBounds, dstBounds, paint);
    return bitmap;
}

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From source file:Main.java

private static Bitmap createBitmap(Bitmap source, int x, int y, int width, int height, Matrix m, float offset,
        boolean clipShadow, Paint paint) {

    int scaledWidth = width;
    int scaledHeight = height;

    final Canvas canvas = new Canvas();
    canvas.translate(offset / 2.0f, offset / 2.0f);

    Bitmap bitmap;//from  w ww  . j  a  v a 2 s . c  o m

    final Rect from = new Rect(x, y, x + width, y + height);
    final RectF to = new RectF(0, 0, width, height);

    if (m == null || m.isIdentity()) {
        bitmap = Bitmap.createBitmap(scaledWidth + (int) offset,
                scaledHeight + (int) (clipShadow ? (offset / 2.0f) : offset), Bitmap.Config.ARGB_8888);
        paint = null;
    } else {
        RectF mapped = new RectF();
        m.mapRect(mapped, to);

        scaledWidth = Math.round(mapped.width());
        scaledHeight = Math.round(mapped.height());

        bitmap = Bitmap.createBitmap(scaledWidth + (int) offset,
                scaledHeight + (int) (clipShadow ? (offset / 2.0f) : offset), Bitmap.Config.ARGB_8888);
        canvas.translate(-mapped.left, -mapped.top);
        canvas.concat(m);
    }

    canvas.setBitmap(bitmap);
    canvas.drawRect(0.0f, 0.0f, width, height, paint);
    canvas.drawBitmap(source, from, to, SCALE_PAINT);

    return bitmap;
}

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From source file:com.scvngr.levelup.core.ui.view.LevelUpCodeView.java

/**
 * Draws the QR code to the canvas, scaling it up to fit the measured size of the view. If
 * enabled, this also draws the colored target areas per
 * {@link #drawColoredTargetAreas(Canvas, LevelUpQrCodeImage)}.
 *
 * @param canvas the drawing canvas./*from ww  w  .j a v  a2s . c  o  m*/
 * @param levelUpQrCodeImage the image of the QR code with target marker information.
 */
private void drawQrCode(@NonNull final Canvas canvas, @NonNull final LevelUpQrCodeImage levelUpQrCodeImage) {
    final Bitmap codeBitmap = levelUpQrCodeImage.getBitmap();
    /*
     * The code is cached in the smallest size and must be scaled before being displayed. It is
     * necessary to draw it directly onto a canvas and scale it in the same operation for
     * efficiency (so we do not have any perceivable lag when switching tip values).
     */
    mCodeScalingMatrix.setScale((float) getMeasuredWidth() / codeBitmap.getWidth(),
            (float) getMeasuredHeight() / codeBitmap.getHeight());

    // Save the canvas without the scaling matrix.
    canvas.save();

    canvas.concat(mCodeScalingMatrix);
    canvas.drawBitmap(codeBitmap, 0, 0, mQrCodePaint);

    if (mIsColorizeSet) {
        drawColoredTargetAreas(canvas, levelUpQrCodeImage);
    }

    canvas.restore();
}

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From source file:com.mylikes.likes.etchasketch.Slate.java

@Override
protected void onDraw(Canvas canvas) {
    if (mTiledCanvas != null) {
        canvas.save(Canvas.MATRIX_SAVE_FLAG);

        if (mPanX != 0 || mPanY != 0 || !mZoomMatrix.isIdentity()) {
            canvas.translate(mPanX, mPanY);
            canvas.concat(mZoomMatrix);

            canvas.drawRect(-20000, -20000, 20000, 0, mWorkspacePaint);
            canvas.drawRect(-20000, 0, 0, mTiledCanvas.getHeight(), mWorkspacePaint);
            canvas.drawRect(mTiledCanvas.getWidth(), 0, 20000, mTiledCanvas.getHeight(), mWorkspacePaint);
            canvas.drawRect(-20000, mTiledCanvas.getHeight(), 20000, 20000, mWorkspacePaint);
        }//  www. j ava2 s . co  m

        if (!mDirtyRegion.isEmpty()) {
            canvas.clipRegion(mDirtyRegion);
            mDirtyRegion.setEmpty();
        }
        // TODO: tune this threshold based on the device density
        mBlitPaint.setFilterBitmap(getScale(mZoomMatrix) < 3f);
        mTiledCanvas.drawTo(canvas, 0, 0, mBlitPaint, false); // @@ set to true for dirty tile updates
        if (0 != (mDebugFlags & FLAG_DEBUG_STROKES)) {
            drawStrokeDebugInfo(canvas);
        }
        for (MoveableDrawing drawing : overlays) {
            drawing.renderInto(canvas, moveMode && drawing == selectedDrawing);
        }

        canvas.restore();

        if (0 != (mDebugFlags & FLAG_DEBUG_PRESSURE)) {
            mPressureCooker.drawDebug(canvas);
        }
    }
}

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From source file:cl.monsoon.s1next.widget.PhotoView.java

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

    // draw the photo
    if (mDrawable != null) {
        int saveCount = canvas.getSaveCount();
        canvas.save();/* w ww  .  j av  a  2s. c  om*/

        if (mDrawMatrix != null) {
            canvas.concat(mDrawMatrix);
        }
        mDrawable.draw(canvas);

        canvas.restoreToCount(saveCount);

        if (mVideoBlob != null) {
            final Bitmap videoImage = (mVideoReady ? sVideoImage : sVideoNotReadyImage);
            final int drawLeft = (getWidth() - videoImage.getWidth()) / 2;
            final int drawTop = (getHeight() - videoImage.getHeight()) / 2;
            canvas.drawBitmap(videoImage, drawLeft, drawTop, null);
        }

        // Extract the drawable's bounds (in our own copy, to not alter the image)
        mTranslateRect.set(mDrawable.getBounds());
        if (mDrawMatrix != null) {
            mDrawMatrix.mapRect(mTranslateRect);
        }

        if (mAllowCrop) {
            int previousSaveCount = canvas.getSaveCount();
            canvas.drawRect(0, 0, getWidth(), getHeight(), sCropDimPaint);
            canvas.save();
            canvas.clipRect(mCropRect);

            if (mDrawMatrix != null) {
                canvas.concat(mDrawMatrix);
            }

            mDrawable.draw(canvas);
            canvas.restoreToCount(previousSaveCount);
            canvas.drawRect(mCropRect, sCropPaint);
        }
    }
}

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From source file:martin.app.bitunion.widget.PhotoView.java

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

    // draw the photo
    if (mDrawable != null) {
        int saveCount = canvas.getSaveCount();
        canvas.save();//from  w  w  w .j a  va 2s . co m

        if (mDrawMatrix != null) {
            canvas.concat(mDrawMatrix);
        }
        mDrawable.draw(canvas);

        canvas.restoreToCount(saveCount);

        if (mVideoBlob != null) {
            final Bitmap videoImage = (mVideoReady ? sVideoImage : sVideoNotReadyImage);
            final int drawLeft = (getWidth() - videoImage.getWidth()) / 2;
            final int drawTop = (getHeight() - videoImage.getHeight()) / 2;
            canvas.drawBitmap(videoImage, drawLeft, drawTop, null);
        }

        // Extract the drawable's bounds (in our own copy, to not alter the image)
        mTranslateRect.set(mDrawable.getBounds());
        if (mDrawMatrix != null) {
            mDrawMatrix.mapRect(mTranslateRect);
        }

        if (mAllowCrop) {
            int previousSaveCount = canvas.getSaveCount();
            canvas.drawRect(0, 0, getWidth(), getHeight(), sCropDimPaint);
            canvas.save();
            canvas.clipRect(mCropRect);

            if (mDrawMatrix != null) {
                canvas.concat(mDrawMatrix);
            }

            mDrawable.draw(canvas);
            canvas.restoreToCount(previousSaveCount);
            canvas.drawRect(mCropRect, sCropPaint);
        }
    }
}

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From source file:pl.motyczko.scrollheader.PagerSlidingTabStrip.java

private void drawBackground(Canvas canvas) {
    if (mViewBackground == null)
        return;/*from  w w  w .  ja  v a 2  s  .c o m*/

    if (mViewBackground instanceof KenBurnsDrawable && !((KenBurnsDrawable) mViewBackground).isAnimating()) {
        mViewBackground.setBounds(0, 0, getWidth(), getHeight());
        ((KenBurnsDrawable) mViewBackground).animate();
        mKenBurnsInitialized = true;
    }
    if (mDrawMatrix == null && !(mViewBackground instanceof KenBurnsDrawable)) {
        calculateBackgroundBounds();
    }
    int saveCount = canvas.getSaveCount();
    canvas.save();
    float translation = mParallaxForBackground ? getTranslationY() / 2 : 0;
    canvas.translate(getScrollX(), getScrollY() - translation);
    if (mDrawMatrix != null)
        canvas.concat(mDrawMatrix);

    float fraction = Math.abs(getTranslationY() / getAllowedVerticalScrollLength());
    int color = (Integer) mColorEvaluator.evaluate(fraction, mOverlayColorExpanded, mOverlayColorCollapsed);
    mViewBackground.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
    mViewBackground.draw(canvas);
    canvas.restoreToCount(saveCount);
}

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From source file:im.ene.lab.design.widget.coverflow.FeatureCoverFlow.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    canvas.save();/*from  ww  w. ja  v  a  2s.  co  m*/

    //set matrix to child's transformation
    setChildTransformation(child, mMatrix);

    //Generate child bitmap
    Bitmap bitmap = child.getDrawingCache();

    //initialize canvas state. Child 0,0 coordinates will match canvas 0,0
    canvas.translate(child.getLeft(), child.getTop());

    //set child transformation on canvas
    canvas.concat(mMatrix);

    final Bitmap rfCache = ((CoverFrame) child).mReflectionCache;

    if (mReflectionBackgroundColor != Color.TRANSPARENT) {
        final int top = bitmap.getHeight() + mReflectionGap - 2;
        final float frame = 1.0f;
        mReflectionPaint.setColor(mReflectionBackgroundColor);
        canvas.drawRect(frame, top + frame, rfCache.getWidth() - frame, top + rfCache.getHeight() - frame,
                mReflectionPaint);
    }

    mPaint.reset();
    mPaint.setAntiAlias(true);
    mPaint.setFilterBitmap(true);

    //Draw child bitmap with applied transforms
    canvas.drawBitmap(bitmap, 0.0f, 0.0f, mPaint);

    //Draw reflection
    canvas.drawBitmap(rfCache, 0.0f, bitmap.getHeight() - 2 + mReflectionGap, mPaint);

    canvas.restore();
    return false;
}

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From source file:cl.monsoon.s1next.widget.PhotoView.java

/**
 * Gets a bitmap of the cropped region. If cropping is not enabled, returns {@code null}.
 *///  w  ww .j a  v  a 2 s.  co m
public Bitmap getCroppedPhoto() {
    if (!mAllowCrop) {
        return null;
    }

    final Bitmap croppedBitmap = Bitmap.createBitmap((int) CROPPED_SIZE, (int) CROPPED_SIZE,
            Bitmap.Config.ARGB_8888);
    final Canvas croppedCanvas = new Canvas(croppedBitmap);

    // scale for the final dimensions
    final int cropWidth = mCropRect.right - mCropRect.left;
    final float scaleWidth = CROPPED_SIZE / cropWidth;
    final float scaleHeight = CROPPED_SIZE / cropWidth;

    // translate to the origin & scale
    final Matrix matrix = new Matrix(mDrawMatrix);
    matrix.postTranslate(-mCropRect.left, -mCropRect.top);
    matrix.postScale(scaleWidth, scaleHeight);

    // draw the photo
    if (mDrawable != null) {
        croppedCanvas.concat(matrix);
        mDrawable.draw(croppedCanvas);
    }

    return croppedBitmap;
}

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