Example usage for android.graphics Canvas drawBitmap

List of usage examples for android.graphics Canvas drawBitmap

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Introduction

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

Prototype

public void drawBitmap(@NonNull Bitmap bitmap, @Nullable Rect src, @NonNull Rect dst, @Nullable Paint paint)

Source Link

Document

Draw the specified bitmap, scaling/translating automatically to fill the destination rectangle.

Usage

From source file:com.example.zhaozhu.practisecustomview.customviewgroup.HSlidingPaneLayout.java

@Override
protected boolean drawChild(final Canvas canvas, final View child, final long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    if (this.mCanSlide && !lp.slideable && (this.mSlideableView != null)) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(this.mTmpRect);
        this.mTmpRect.right = Math.min(this.mTmpRect.right, this.mSlideableView.getLeft());
        canvas.clipRect(this.mTmpRect);
    }//from w w  w.j a  v a2  s .co  m

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && (this.mSlideOffset > 0)) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            Bitmap cache = child.getDrawingCache();
            if (cache != null && !cache.isRecycled()) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(HSlidingPaneLayout.TAG,
                        "drawChild: child view " + child + " returned null drawing cache");
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:com.example.zhaozhu.practisecustomview.customviewgroup.HSlidingPaneLayout2.java

@Override
protected boolean drawChild(final Canvas canvas, final View child, final long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    if (this.mCanSlide && !lp.slideable && (this.mSlideableView != null)) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(this.mTmpRect);
        this.mTmpRect.right = Math.min(this.mTmpRect.right, this.mSlideableView.getLeft());
        canvas.clipRect(this.mTmpRect);
    }/*  ww  w. ja  va  2 s .  c  o  m*/

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && (this.mSlideOffset > 0)) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            Bitmap cache = child.getDrawingCache();
            if (cache != null && !cache.isRecycled()) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(HSlidingPaneLayout2.TAG,
                        "drawChild: child view " + child + " returned null drawing cache");
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:cn.zmdx.kaka.locker.widget.SlidingPaneLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    if (mCanSlide && !lp.slideable && mSlideableView != null) {
        // Clip against the slider; no sense drawing what will immediately
        // be covered.
        canvas.getClipBounds(mTmpRect);/*from ww w  .j av  a2 s. c  o  m*/
        if (isLayoutRtlSupport()) {
            mTmpRect.left = Math.max(mTmpRect.left, mSlideableView.getRight());
        } else {
            mTmpRect.right = Math.min(mTmpRect.right, mSlideableView.getLeft());
        }
        canvas.clipRect(mTmpRect);
    }

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && mSlideOffset > 0) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            final Bitmap cache = child.getDrawingCache();
            if (cache != null) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(TAG, "drawChild: child view " + child + " returned null drawing cache");
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:com.anysoftkeyboard.keyboards.views.AnyKeyboardBaseView.java

@Override
public void onDraw(final Canvas canvas) {
    super.onDraw(canvas);
    mDrawOperation.setCanvas(canvas);/*from w w  w.  j  av a 2  s . c o m*/

    if (mDrawPending || mBuffer == null || mKeyboardChanged) {
        GCUtils.getInstance().peformOperationWithMemRetry(TAG, mDrawOperation, true);
    }
    // maybe there is no buffer, since drawing was not done.
    if (mBuffer != null)
        canvas.drawBitmap(mBuffer, 0.0f, 0.0f, null);
}

From source file:cn.wyx.android.swipeback.swipe.SwipeBackLayout.java

/**
 * ?// ww  w  . java 2 s. c  o m
 *
 * @param canvas canvas
 */
private void drawLastScreenshot(Canvas canvas) {
    if (mLastScreenshot != null && target != null) {
        int right = target.getLeft();
        Paint paint = new Paint();
        paint.setAntiAlias(true);
        Rect src = new Rect(mLastScreenshot.getWidth() - target.getLeft(), 0, mLastScreenshot.getWidth(),
                target.getBottom());
        //target??
        Rect dst = new Rect(0, target.getBottom() - mLastScreenshot.getHeight(), right, target.getBottom());

        int navigationBarHeight = getNavigationBarHeight();

        isFullscreen = target.getHeight() == getResources().getDisplayMetrics().heightPixels
                + navigationBarHeight;

        int statusBarHeight = getStatusBarHeight();

        switch (dragEdge) {
        case LEFT:
            src = new Rect(mLastScreenshot.getWidth() - target.getLeft(), 0, mLastScreenshot.getWidth(),
                    mLastScreenshot.getHeight());
            dst = new Rect(0, isFullscreen ? statusBarHeight : target.getBottom() - mLastScreenshot.getHeight(),
                    right, isFullscreen ? target.getHeight() - navigationBarHeight : target.getBottom());

            break;
        case RIGHT:
            src = new Rect(0, 0, mLastScreenshot.getWidth() - target.getRight(), mLastScreenshot.getHeight());
            dst = new Rect(target.getRight(),
                    isFullscreen ? statusBarHeight : target.getBottom() - mLastScreenshot.getHeight(),
                    mLastScreenshot.getWidth(),
                    isFullscreen ? target.getHeight() - navigationBarHeight : target.getBottom());
            break;

        case TOP:
            src = new Rect(0, mLastScreenshot.getHeight() - target.getTop(), mLastScreenshot.getWidth(),
                    target.getBottom());
            dst = new Rect(0, 0, target.getRight(), target.getTop());
            break;
        case BOTTOM:
            src = new Rect(0, 0, mLastScreenshot.getWidth(), mLastScreenshot.getHeight() - target.getBottom());
            dst = new Rect(0, target.getBottom(), mLastScreenshot.getWidth(), mLastScreenshot.getHeight());
            break;
        }

        canvas.drawBitmap(mLastScreenshot, src, dst, paint);
    }
}

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

@Override
protected void onDraw(Canvas canvas) {
    if (mBounds == null) {
        return;/*from   www . j  a va 2s  . co 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:cn.bingoogolapple.swipebacklayout.BGASwipeBackLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    boolean result;
    final int save = canvas.save(Canvas.CLIP_SAVE_FLAG);

    if (mCanSlide && !lp.slideable && mSlideableView != null) {
        // Clip against the slider; no sense drawing what will immediately be covered.
        canvas.getClipBounds(mTmpRect);/*  w  ww  . ja v a 2 s  .  c o m*/
        if (isLayoutRtlSupport()) {
            mTmpRect.left = Math.max(mTmpRect.left, mSlideableView.getRight());
        } else {
            mTmpRect.right = Math.min(mTmpRect.right, mSlideableView.getLeft());
        }
        canvas.clipRect(mTmpRect);
    }

    if (Build.VERSION.SDK_INT >= 11) { // HC
        result = super.drawChild(canvas, child, drawingTime);
    } else {
        if (lp.dimWhenOffset && mSlideOffset > 0) {
            if (!child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(true);
            }
            final Bitmap cache = child.getDrawingCache();
            if (cache != null) {
                canvas.drawBitmap(cache, child.getLeft(), child.getTop(), lp.dimPaint);
                result = false;
            } else {
                Log.e(TAG, "drawChild: child view " + child + " returned null drawing cache");
                result = super.drawChild(canvas, child, drawingTime);
            }
        } else {
            if (child.isDrawingCacheEnabled()) {
                child.setDrawingCacheEnabled(false);
            }
            result = super.drawChild(canvas, child, drawingTime);
        }
    }

    canvas.restoreToCount(save);

    return result;
}

From source file:com.android.mms.ui.MessageUtils.java

public static Bitmap getCircularBitmap(Bitmap bitmap) {
    Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(output);

    final int color = 0xff424242;
    final Paint paint = new Paint();
    final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
    final RectF rectF = new RectF(rect);
    final float roundPx = bitmap.getWidth() / 2;

    paint.setAntiAlias(true);/*from w w  w.j av  a2s .c o  m*/
    canvas.drawARGB(0, 0, 0, 0);
    paint.setColor(color);
    canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

    paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
    canvas.drawBitmap(bitmap, rect, rect, paint);
    return output;
}

From source file:com.android.contacts.ShortcutIntentBuilder.java

/**
 * Generates a phone number shortcut icon. Adds an overlay describing the type of the phone
 * number, and if there is a photo also adds the call action icon.
 *//* w w w . ja  v  a 2s . c om*/
private Bitmap generatePhoneNumberIcon(Drawable photo, int phoneType, String phoneLabel, int actionResId) {
    final Resources r = mContext.getResources();
    final float density = r.getDisplayMetrics().density;

    final Drawable phoneDrawable = r.getDrawableForDensity(actionResId, mIconDensity);
    // These icons have the same height and width so either is fine for the size.
    final Bitmap phoneIcon = BitmapUtil.drawableToBitmap(phoneDrawable, phoneDrawable.getIntrinsicHeight());

    Bitmap icon = generateQuickContactIcon(photo);
    Canvas canvas = new Canvas(icon);

    // Copy in the photo
    Paint photoPaint = new Paint();
    photoPaint.setDither(true);
    photoPaint.setFilterBitmap(true);
    Rect dst = new Rect(0, 0, mIconSize, mIconSize);

    // Create an overlay for the phone number type if we're pre-O. O created shortcuts have the
    // app badge which overlaps the type overlay.
    CharSequence overlay = Phone.getTypeLabel(r, phoneType, phoneLabel);
    if (!BuildCompat.isAtLeastO() && overlay != null) {
        TextPaint textPaint = new TextPaint(Paint.ANTI_ALIAS_FLAG | Paint.DEV_KERN_TEXT_FLAG);
        textPaint.setTextSize(r.getDimension(R.dimen.shortcut_overlay_text_size));
        textPaint.setColor(r.getColor(R.color.textColorIconOverlay));
        textPaint.setShadowLayer(4f, 0, 2f, r.getColor(R.color.textColorIconOverlayShadow));

        final FontMetricsInt fmi = textPaint.getFontMetricsInt();

        // First fill in a darker background around the text to be drawn
        final Paint workPaint = new Paint();
        workPaint.setColor(mOverlayTextBackgroundColor);
        workPaint.setStyle(Paint.Style.FILL);
        final int textPadding = r.getDimensionPixelOffset(R.dimen.shortcut_overlay_text_background_padding);
        final int textBandHeight = (fmi.descent - fmi.ascent) + textPadding * 2;
        dst.set(0, mIconSize - textBandHeight, mIconSize, mIconSize);
        canvas.drawRect(dst, workPaint);

        overlay = TextUtils.ellipsize(overlay, textPaint, mIconSize, TruncateAt.END);
        final float textWidth = textPaint.measureText(overlay, 0, overlay.length());
        canvas.drawText(overlay, 0, overlay.length(), (mIconSize - textWidth) / 2,
                mIconSize - fmi.descent - textPadding, textPaint);
    }

    // Draw the phone action icon as an overlay
    int iconWidth = icon.getWidth();
    if (BuildCompat.isAtLeastO()) {
        // On O we need to calculate where the phone icon goes slightly differently. The whole
        // canvas area is 108dp, a centered circle with a diameter of 66dp is the "safe zone".
        // So we start the drawing the phone icon at
        // 108dp - 21 dp (distance from right edge of safe zone to the edge of the canvas)
        // - 24 dp (size of the phone icon) on the x axis (left)
        // The y axis is simply 21dp for the distance to the safe zone (top).
        // See go/o-icons-eng for more details and a handy picture.
        final int left = (int) (mIconSize - (45 * density));
        final int top = (int) (21 * density);
        canvas.drawBitmap(phoneIcon, left, top, photoPaint);
    } else {
        dst.set(iconWidth - ((int) (20 * density)), -1, iconWidth, ((int) (19 * density)));
        canvas.drawBitmap(phoneIcon, null, dst, photoPaint);
    }

    canvas.setBitmap(null);
    return icon;
}

From source file:de.vanita5.twittnuker.util.Utils.java

/**
 * Resizes specific a Bitmap with keeping ratio.
 *//*from  w w w .j a  v a  2  s .c o  m*/
public static Bitmap resizeBitmap(Bitmap orig, final int desireWidth, final int desireHeight) {
    final int width = orig.getWidth();
    final int height = orig.getHeight();

    if (0 < width && 0 < height && desireWidth < width || desireHeight < height) {
        // Calculate scale
        float scale;
        if (width < height) {
            scale = (float) desireHeight / (float) height;
            if (desireWidth < width * scale) {
                scale = (float) desireWidth / (float) width;
            }
        } else {
            scale = (float) desireWidth / (float) width;
        }

        // Draw resized image
        final Matrix matrix = new Matrix();
        matrix.postScale(scale, scale);
        final Bitmap bitmap = Bitmap.createBitmap(orig, 0, 0, width, height, matrix, true);
        final Canvas canvas = new Canvas(bitmap);
        canvas.drawBitmap(bitmap, 0, 0, null);

        orig = bitmap;
    }

    return orig;
}