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:android.support.design.widget.CoordinatorLayout.java

@Override
protected boolean drawChild(Canvas canvas, View child, long drawingTime) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    if (lp.mBehavior != null) {
        final float scrimAlpha = lp.mBehavior.getScrimOpacity(this, child);
        if (scrimAlpha > 0f) {
            if (mScrimPaint == null) {
                mScrimPaint = new Paint();
            }/*from ww w. ja  v a 2s .  co m*/
            mScrimPaint.setColor(lp.mBehavior.getScrimColor(this, child));
            mScrimPaint.setAlpha(MathUtils.constrain(Math.round(255 * scrimAlpha), 0, 255));

            final int saved = canvas.save();
            if (child.isOpaque()) {
                // If the child is opaque, there is no need to draw behind it so we'll inverse
                // clip the canvas
                canvas.clipRect(child.getLeft(), child.getTop(), child.getRight(), child.getBottom(),
                        Region.Op.DIFFERENCE);
            }
            // Now draw the rectangle for the scrim
            canvas.drawRect(getPaddingLeft(), getPaddingTop(), getWidth() - getPaddingRight(),
                    getHeight() - getPaddingBottom(), mScrimPaint);
            canvas.restoreToCount(saved);
        }
    }
    return super.drawChild(canvas, child, drawingTime);
}

---

From source file:com.telerik.examples.primitives.ExampleViewPagerBase.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            if (this.orientation == LinearLayout.HORIZONTAL) {
                final int restoreCount = canvas.save();
                final int height = getHeight() - getPaddingTop() - getPaddingBottom();
                final int width = getWidth();

                canvas.rotate(270);// w  ww. j  av  a2s  . co  m
                canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
                mLeftEdge.setSize(height, width);
                needsInvalidate |= mLeftEdge.draw(canvas);
                canvas.restoreToCount(restoreCount);
            } else {
                final int restoreCount = canvas.save();
                final int height = getHeight();
                final int width = getWidth() - getPaddingLeft() - getPaddingRight();
                canvas.translate(getPaddingLeft(), mFirstOffset * height);
                mLeftEdge.setSize(width, height);
                needsInvalidate |= mLeftEdge.draw(canvas);
                canvas.restoreToCount(restoreCount);
            }
        }
        if (!mRightEdge.isFinished()) {
            if (this.orientation == LinearLayout.HORIZONTAL) {
                final int restoreCount = canvas.save();
                final int width = getWidth();
                final int height = getHeight() - getPaddingTop() - getPaddingBottom();

                canvas.rotate(90);
                canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
                mRightEdge.setSize(height, width);
                needsInvalidate |= mRightEdge.draw(canvas);
                canvas.restoreToCount(restoreCount);
            } else {
                final int restoreCount = canvas.save();
                final int width = getWidth() - getPaddingLeft() - getPaddingRight();
                final int height = getHeight();

                canvas.rotate(180);
                canvas.translate(-getPaddingLeft() - width, -height);
                mRightEdge.setSize(width, height);
                needsInvalidate |= mRightEdge.draw(canvas);
                canvas.restoreToCount(restoreCount);
            }
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.appunite.list.HorizontalListView.java

void drawOverscrollHeader(Canvas canvas, Drawable drawable, Rect bounds) {
    final int width = drawable.getMinimumWidth();

    canvas.save();
    canvas.clipRect(bounds);//from  w w  w  .jav  a2 s . c  o m

    final int span = bounds.right - bounds.left;
    if (span < width) {
        bounds.left = bounds.right - width;
    }

    drawable.setBounds(bounds);
    drawable.draw(canvas);

    canvas.restore();
}

---

From source file:com.appunite.list.HorizontalListView.java

void drawOverscrollFooter(Canvas canvas, Drawable drawable, Rect bounds) {
    final int width = drawable.getMinimumWidth();

    canvas.save();
    canvas.clipRect(bounds);// w w  w.  j  av a  2 s  .com

    final int span = bounds.right - bounds.left;
    if (span < width) {
        bounds.right = bounds.left + width;
    }

    drawable.setBounds(bounds);
    drawable.draw(canvas);

    canvas.restore();
}

---

From source file:org.bangbang.support.v4.widget.HListView.java

/**
     * Draws a divider for the given child in the given bounds.
     *//from  ww w .  j a va2s .c o m
     * @param canvas The canvas to draw to.
     * @param bounds The bounds of the divider.
     * @param childIndex The index of child (of the View) above the divider.
     *            This will be -1 if there is no child above the divider to be
     *            drawn.
     */
    void drawDivider(Canvas canvas, Rect bounds, int childIndex) {
        // This widget draws the same divider for all children
        final Drawable divider = mDivider;
        final boolean clipDivider = mClipDivider;

        if (!clipDivider) {
            divider.setBounds(bounds);
        } else {
            canvas.save();
            canvas.clipRect(bounds);
        }

        divider.draw(canvas);

        if (clipDivider) {
            canvas.restore();
        }
    }

---

From source file:com.appunite.list.ListView.java

void drawOverscrollHeader(Canvas canvas, Drawable drawable, Rect bounds) {
    final int height = drawable.getMinimumHeight();

    canvas.save();
    canvas.clipRect(bounds);/*from   w w  w .  j a va 2  s  .  co  m*/

    final int span = bounds.bottom - bounds.top;
    if (span < height) {
        bounds.top = bounds.bottom - height;
    }

    drawable.setBounds(bounds);
    drawable.draw(canvas);

    canvas.restore();
}

---

From source file:com.appunite.list.ListView.java

void drawOverscrollFooter(Canvas canvas, Drawable drawable, Rect bounds) {
    final int height = drawable.getMinimumHeight();

    canvas.save();
    canvas.clipRect(bounds);//from  w ww  .  ja  v  a 2  s  .c o m

    final int span = bounds.bottom - bounds.top;
    if (span < height) {
        bounds.bottom = bounds.top + height;
    }

    drawable.setBounds(bounds);
    drawable.draw(canvas);

    canvas.restore();
}

---

From source file:cn.androidy.materialdesignsample.ryanharterviewpager.ViewPager.java

@Override
public void draw(Canvas canvas) {
    super.draw(canvas);
    boolean needsInvalidate = false;

    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = isOrientationHorizontal() ? getHeight() - getPaddingTop() - getPaddingBottom()
                    : getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = isOrientationHorizontal() ? getWidth() - getPaddingLeft() - getPaddingRight()
                    : getHeight() - getPaddingTop() - getPaddingBottom();

            if (isOrientationHorizontal()) {
                canvas.rotate(270);/*from w w w  . j  a v  a 2 s . c  om*/
                canvas.translate(-width + getPaddingTop(), mFirstOffset * height);
            }
            mLeftEdge.setSize(width, height);
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = isOrientationHorizontal() ? getHeight() - getPaddingTop() - getPaddingBottom()
                    : getWidth() - getPaddingLeft() - getPaddingRight();
            final int height = isOrientationHorizontal() ? getWidth() - getPaddingLeft() - getPaddingRight()
                    : getHeight() - getPaddingTop() - getPaddingBottom();

            if (isOrientationHorizontal()) {
                canvas.rotate(90);
                canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * height);
            } else {
                canvas.rotate(180);
                canvas.translate(-width, -(mLastOffset + 1) * height);
            }
            mRightEdge.setSize(width, height);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:gl.android.widget.viewpager.ViewPagerEx.java

@Override
public void draw(Canvas canvas) {
    try {/*from   www  .j  a v  a2  s.c o  m*/
        super.draw(canvas);
    } catch (Exception e) {
        //         System.out.println(e.getMessage());
        //FIXME the nullpoint Exception at super.Draw(canvas) in viewPager;
        if (mFirstLayout) {
            Log.e("ViewPagerEx", "line 2305,.draw(Canvas canvas) NullPointException");
        }

    }
    boolean needsInvalidate = false;
    final int overScrollMode = ViewCompat.getOverScrollMode(this);
    if (overScrollMode == ViewCompat.OVER_SCROLL_ALWAYS
            || (overScrollMode == ViewCompat.OVER_SCROLL_IF_CONTENT_SCROLLS && mAdapter != null
                    && mAdapter.getCount() > 1)) {
        if (!mLeftEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();
            final int width = getWidth();

            canvas.rotate(270);
            canvas.translate(-height + getPaddingTop(), mFirstOffset * width);
            mLeftEdge.setSize(height, width);
            needsInvalidate |= mLeftEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
        if (!mRightEdge.isFinished()) {
            final int restoreCount = canvas.save();
            final int width = getWidth();
            final int height = getHeight() - getPaddingTop() - getPaddingBottom();

            canvas.rotate(90);
            canvas.translate(-getPaddingTop(), -(mLastOffset + 1) * width);
            mRightEdge.setSize(height, width);
            needsInvalidate |= mRightEdge.draw(canvas);
            canvas.restoreToCount(restoreCount);
        }
    } else {
        mLeftEdge.finish();
        mRightEdge.finish();
    }

    if (needsInvalidate) {
        // Keep animating
        ViewCompat.postInvalidateOnAnimation(this);
    }
}

---

From source file:com.klinker.android.launcher.launcher3.Workspace.java

/**
 * Draw the View v into the given Canvas.
 *
 * @param v the view to draw// ww  w. ja v a 2  s.  c  om
 * @param destCanvas the canvas to draw on
 * @param padding the horizontal and vertical padding to use when drawing
 */
private static void drawDragView(View v, Canvas destCanvas, int padding) {
    final Rect clipRect = sTempRect;
    v.getDrawingRect(clipRect);

    boolean textVisible = false;

    destCanvas.save();
    if (v instanceof TextView) {
        Drawable d = getTextViewIcon((TextView) v);
        Rect bounds = getDrawableBounds(d);
        clipRect.set(0, 0, bounds.width() + padding, bounds.height() + padding);
        destCanvas.translate(padding / 2 - bounds.left, padding / 2 - bounds.top);
        d.draw(destCanvas);
    } else {
        if (v instanceof FolderIcon) {
            // For FolderIcons the text can bleed into the icon area, and so we need to
            // hide the text completely (which can't be achieved by clipping).
            if (((FolderIcon) v).getTextVisible()) {
                ((FolderIcon) v).setTextVisible(false);
                textVisible = true;
            }
        }
        destCanvas.translate(-v.getScrollX() + padding / 2, -v.getScrollY() + padding / 2);
        destCanvas.clipRect(clipRect, Op.REPLACE);
        v.draw(destCanvas);

        // Restore text visibility of FolderIcon if necessary
        if (textVisible) {
            ((FolderIcon) v).setTextVisible(true);
        }
    }
    destCanvas.restore();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• »