Example usage for android.graphics Canvas save

Introduction

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

Prototype

public int save()

Source Link

Document

Saves the current matrix and clip onto a private stack.

Usage

From source file:org.telegram.ui.Components.Switch.java

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

    final Rect padding = mTempRect;
    final Drawable trackDrawable = mTrackDrawable;
    if (trackDrawable != null) {
        trackDrawable.getPadding(padding);
    } else {/*from  w w w .ja  va 2 s  . com*/
        padding.setEmpty();
    }

    final int switchTop = mSwitchTop;
    final int switchBottom = mSwitchBottom;

    final Drawable thumbDrawable = mThumbDrawable;
    if (trackDrawable != null) {
        if (mSplitTrack && thumbDrawable != null) {
            final Insets insets = Insets.NONE;
            thumbDrawable.copyBounds(padding);
            padding.left += insets.left;
            padding.right -= insets.right;

            final int saveCount = canvas.save();
            canvas.clipRect(padding, Region.Op.DIFFERENCE);
            trackDrawable.draw(canvas);
            canvas.restoreToCount(saveCount);
        } else {
            trackDrawable.draw(canvas);
        }
    }

    final int saveCount = canvas.save();

    if (thumbDrawable != null) {
        thumbDrawable.draw(canvas);
    }

    canvas.restoreToCount(saveCount);
}

From source file:com.bitflake.counter.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();

    int selectedItem = this.selectedItem;

    float itemWithPadding = itemWidth + dividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * sideItems, 0);

    if (values != null) {
        for (int i = 0; i < values.length; i++) {

            // set text color for item
            textPaint.setColor(getTextColor(i));

            // get text layout
            BoringLayout layout = layouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();//from w  w w . j  a va2s  .c  o  m

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > itemWidth) {
                if (isRtl(values[i])) {
                    x += (lineWidth - itemWidth) / 2;
                } else {
                    x -= (lineWidth - itemWidth) / 2;
                }
            }

            if (marquee != null && i == selectedItem) {
                x += marquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = itemClipBounds;
            } else {
                clipBounds = itemClipBoundsOffset;
                clipBounds.set(itemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (marquee != null && i == selectedItem && marquee.shouldDrawGhost()) {
                canvas.translate(marquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, leftEdgeEffect, 270);
    drawEdgeEffect(canvas, rightEdgeEffect, 90);
}

From source file:com.actionbarsherlock.internal.widget.IcsProgressBar.java

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

    Drawable d = mCurrentDrawable;//from  www. j  a  v a 2s . co  m
    if (d != null) {
        // Translate canvas so a indeterminate circular progress bar with padding
        // rotates properly in its animation
        canvas.save();
        canvas.translate(getPaddingLeft() + mIndeterminateRealLeft, getPaddingTop() + mIndeterminateRealTop);
        long time = getDrawingTime();
        if (mAnimation != null) {
            mAnimation.getTransformation(time, mTransformation);
            float scale = mTransformation.getAlpha();
            try {
                mInDrawing = true;
                d.setLevel((int) (scale * MAX_LEVEL));
            } finally {
                mInDrawing = false;
            }
            if (SystemClock.uptimeMillis() - mLastDrawTime >= mAnimationResolution) {
                mLastDrawTime = SystemClock.uptimeMillis();
                postInvalidateDelayed(mAnimationResolution);
            }
        }
        d.draw(canvas);
        canvas.restore();
        if (mShouldStartAnimationDrawable && d instanceof Animatable) {
            ((Animatable) d).start();
            mShouldStartAnimationDrawable = false;
        }
    }
}

From source file:kr.selfcontrol.selflocklauncher.picker.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();

    int selectedItem = mSelectedItem;

    float itemWithPadding = mItemWidth + mDividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * mSideItems, 0);

    if (mValues != null) {
        for (int i = 0; i < mValues.length; i++) {

            // set text color for item
            mTextPaint.setColor(getTextColor(i));

            // get text layout
            BoringLayout layout = mLayouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();/*  w w w .  j av  a 2  s  .c  om*/

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > mItemWidth) {
                if (isRtl(mValues[i])) {
                    x += (lineWidth - mItemWidth) / 2;
                } else {
                    x -= (lineWidth - mItemWidth) / 2;
                }
            }

            if (mMarquee != null && i == selectedItem) {
                x += mMarquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = mItemClipBounds;
            } else {
                clipBounds = mItemClipBoundsOffser;
                clipBounds.set(mItemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (mMarquee != null && i == selectedItem && mMarquee.shouldDrawGhost()) {
                canvas.translate(mMarquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, mLeftEdgeEffect, 270);
    drawEdgeEffect(canvas, mRightEdgeEffect, 90);
}

From source file:de.tud.nhd.petimo.libs.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();

    int selectedItem = this.selectedItem;

    float itemWithPadding = itemWidth + dividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * sideItems, 0);

    if (values != null) {
        for (int i = 0; i < values.length; i++) {

            if (i == selectedItem) {
                textPaint.setColor(getResources().getColor(R.color.colorAccent));
                //textPaint.setTextSize(40);
                textPaint.setFakeBoldText(true);
            } else {
                textPaint.setColor(getTextColor(i));
                //textPaint.setTextSize(textSize);
                textPaint.setFakeBoldText(false);
            }/*ww  w  .j  a  v  a 2s . c o m*/

            // get text layout
            BoringLayout layout = layouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > itemWidth) {
                if (isRtl(values[i])) {
                    x += (lineWidth - itemWidth) / 2;
                } else {
                    x -= (lineWidth - itemWidth) / 2;
                }
            }

            if (marquee != null && i == selectedItem) {
                x += marquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = itemClipBounds;
            } else {
                clipBounds = itemClipBoundsOffset;
                clipBounds.set(itemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (marquee != null && i == selectedItem && marquee.shouldDrawGhost()) {
                canvas.translate(marquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, leftEdgeEffect, 270);
    drawEdgeEffect(canvas, rightEdgeEffect, 90);
}

From source file:com.ionesmile.variousdemo.view.HorizontalPicker.java

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

    int saveCount = canvas.getSaveCount();
    canvas.save();

    int selectedItem = this.selectedItem;

    float itemWithPadding = itemWidth + dividerSize;

    // translate horizontal to center
    canvas.translate(itemWithPadding * sideItems, 0);

    if (values != null) {
        for (int i = 0; i < values.length; i++) {

            // set text color for item
            textPaint.setColor(getTextColor(i));
            textPaint.setTextSize(getTextSize(i));
            // get text layout
            BoringLayout layout = layouts[i];

            int saveCountHeight = canvas.getSaveCount();
            canvas.save();/* w  w w  .  j ava 2  s . co m*/

            float x = 0;

            float lineWidth = layout.getLineWidth(0);
            if (lineWidth > itemWidth) {
                if (isRtl(values[i])) {
                    x += (lineWidth - itemWidth) / 2;
                } else {
                    x -= (lineWidth - itemWidth) / 2;
                }
            }

            if (marquee != null && i == selectedItem) {
                x += marquee.getScroll();
            }

            // translate vertically to center
            canvas.translate(-x, (canvas.getHeight() - layout.getHeight()) / 2);

            RectF clipBounds;
            if (x == 0) {
                clipBounds = itemClipBounds;
            } else {
                clipBounds = itemClipBoundsOffset;
                clipBounds.set(itemClipBounds);
                clipBounds.offset(x, 0);
            }

            canvas.clipRect(clipBounds);
            layout.draw(canvas);

            if (marquee != null && i == selectedItem && marquee.shouldDrawGhost()) {
                canvas.translate(marquee.getGhostOffset(), 0);
                layout.draw(canvas);
            }

            // restore vertical translation
            canvas.restoreToCount(saveCountHeight);

            // translate horizontal for 1 item
            canvas.translate(itemWithPadding, 0);
        }
    }

    // restore horizontal translation
    canvas.restoreToCount(saveCount);

    drawEdgeEffect(canvas, leftEdgeEffect, 270);
    drawEdgeEffect(canvas, rightEdgeEffect, 90);
}

From source file:com.example.stickablelistview.StickListView.java

/** Draws the overscroll edge glow effect on the left and right sides of the horizontal list */
private void drawEdgeGlow(Canvas canvas) {
    if (mEdgeGlowTop != null && !mEdgeGlowTop.isFinished() && isEdgeGlowEnabled()) {
        // The Edge glow is meant to come from the top of the screen, so rotate it to draw on the left side.
        final int restoreCount = canvas.save();
        final int width = getWidth();

        canvas.rotate(-90, 0, 0);/* w  ww.ja v a  2  s  .co  m*/
        canvas.translate(0, -width + getPaddingRight());

        mEdgeGlowTop.setSize(getRenderWidth(), getRenderHeight());
        if (mEdgeGlowTop.draw(canvas)) {
            invalidate();
        }

        canvas.restoreToCount(restoreCount);
    } else if (mEdgeGlowBottom != null && !mEdgeGlowBottom.isFinished() && isEdgeGlowEnabled()) {
        // The Edge glow is meant to come from the top of the screen, so rotate it to draw on the right side.
        final int restoreCount = canvas.save();
        final int width = getWidth();

        canvas.rotate(90, 0, 0);
        canvas.translate(getPaddingTop(), -width);
        mEdgeGlowBottom.setSize(getRenderWidth(), getRenderHeight());
        if (mEdgeGlowBottom.draw(canvas)) {
            invalidate();
        }

        canvas.restoreToCount(restoreCount);
    }
}

From source file:com.simon.catkins.views.HorizontalListView.java

/** Draws the overscroll edge glow effect on the top and bottom sides of the vertical list */
private void drawEdgeGlow(Canvas canvas) {
    if (mEdgeGlowLeft != null && !mEdgeGlowLeft.isFinished() && isEdgeGlowEnabled()) {
        // The Edge glow is meant to come from the top of the screen, so rotate it to draw on the top side.
        final int restoreCount = canvas.save();
        final int height = getHeight();

        canvas.rotate(-90, 0, 0);//from ww  w  .  ja  v a 2s . c om
        canvas.translate(-height + getPaddingBottom(), 0);

        mEdgeGlowLeft.setSize(getRenderHeight(), getRenderWidth());
        if (mEdgeGlowLeft.draw(canvas)) {
            invalidate();
        }

        canvas.restoreToCount(restoreCount);
    } else if (mEdgeGlowRight != null && !mEdgeGlowRight.isFinished() && isEdgeGlowEnabled()) {
        // The Edge glow is meant to come from the top of the screen, so rotate it to draw on the bottom side.
        final int restoreCount = canvas.save();
        final int width = getWidth();

        canvas.rotate(90, 0, 0);
        canvas.translate(getPaddingTop(), -width);
        mEdgeGlowRight.setSize(getRenderHeight(), getRenderWidth());
        if (mEdgeGlowRight.draw(canvas)) {
            invalidate();
        }

        canvas.restoreToCount(restoreCount);
    }
}

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

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    canvas.save();

    //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);/*  ww  w  .  j  av  a2s .com*/

    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;
}

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

private void drawBackground(Canvas canvas) {
    if (mViewBackground == null)
        return;//from w w w  .  j  a 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);
}