List of usage examples for android.graphics Canvas save
public int save(@Saveflags int saveFlags)
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);//w w w . j a 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: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);/*from w w w . j a va 2 s.c om*/ 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.launcher3.BubbleTextView.java
@Override public void draw(Canvas canvas) { if (!mCustomShadowsEnabled) { super.draw(canvas); return;/*from w ww . ja v a 2 s . co m*/ } final Drawable background = mBackground; if (background != null) { final int scrollX = getScrollX(); final int scrollY = getScrollY(); if (mBackgroundSizeChanged) { background.setBounds(0, 0, getRight() - getLeft(), getBottom() - getTop()); mBackgroundSizeChanged = false; } if ((scrollX | scrollY) == 0) { background.draw(canvas); } else { canvas.translate(scrollX, scrollY); background.draw(canvas); canvas.translate(-scrollX, -scrollY); } } // If text is transparent, don't draw any shadow if (getCurrentTextColor() == ContextCompat.getColor(getContext(), android.R.color.transparent)) { getPaint().clearShadowLayer(); super.draw(canvas); return; } // We enhance the shadow by drawing the shadow twice float density = getResources().getDisplayMetrics().density; getPaint().setShadowLayer(density * AMBIENT_SHADOW_RADIUS, 0, 0, AMBIENT_SHADOW_COLOR); super.draw(canvas); canvas.save(Canvas.CLIP_SAVE_FLAG); canvas.clipRect(getScrollX(), getScrollY() + getExtendedPaddingTop(), getScrollX() + getWidth(), getScrollY() + getHeight(), Region.Op.INTERSECT); getPaint().setShadowLayer(density * KEY_SHADOW_RADIUS, 0.0f, density * KEY_SHADOW_OFFSET, KEY_SHADOW_COLOR); super.draw(canvas); canvas.restore(); }
From source file:com.android.launcher3.Utilities.java
/** * @param scale the scale to apply before drawing {@param icon} on the canvas *///ww w . j av a2s.c o m public static Bitmap createIconBitmap(Drawable icon, Context context, float scale) { synchronized (sCanvas) { final int iconBitmapSize = getIconBitmapSize(); int width = iconBitmapSize; int height = iconBitmapSize; if (icon instanceof PaintDrawable) { PaintDrawable painter = (PaintDrawable) icon; painter.setIntrinsicWidth(width); painter.setIntrinsicHeight(height); } else if (icon instanceof BitmapDrawable) { // Ensure the bitmap has a density. BitmapDrawable bitmapDrawable = (BitmapDrawable) icon; Bitmap bitmap = bitmapDrawable.getBitmap(); if (bitmap != null && bitmap.getDensity() == Bitmap.DENSITY_NONE) { bitmapDrawable.setTargetDensity(context.getResources().getDisplayMetrics()); } } int sourceWidth = icon.getIntrinsicWidth(); int sourceHeight = icon.getIntrinsicHeight(); if (sourceWidth > 0 && sourceHeight > 0) { // Scale the icon proportionally to the icon dimensions final float ratio = (float) sourceWidth / sourceHeight; if (sourceWidth > sourceHeight) { height = (int) (width / ratio); } else if (sourceHeight > sourceWidth) { width = (int) (height * ratio); } } // no intrinsic size --> use default size int textureWidth = iconBitmapSize; int textureHeight = iconBitmapSize; final Bitmap bitmap = Bitmap.createBitmap(textureWidth, textureHeight, Bitmap.Config.ARGB_8888); final Canvas canvas = sCanvas; canvas.setBitmap(bitmap); final int left = (textureWidth - width) / 2; final int top = (textureHeight - height) / 2; @SuppressWarnings("all") // suppress dead code warning final boolean debug = false; if (debug) { // draw a big box for the icon for debugging canvas.drawColor(sColors[sColorIndex]); if (++sColorIndex >= sColors.length) sColorIndex = 0; Paint debugPaint = new Paint(); debugPaint.setColor(0xffcccc00); canvas.drawRect(left, top, left + width, top + height, debugPaint); } sOldBounds.set(icon.getBounds()); icon.setBounds(left, top, left + width, top + height); canvas.save(Canvas.MATRIX_SAVE_FLAG); canvas.scale(scale, scale, textureWidth / 2, textureHeight / 2); icon.draw(canvas); canvas.restore(); icon.setBounds(sOldBounds); canvas.setBitmap(null); return bitmap; } }