List of usage examples for android.graphics Paint getStyle
public Style getStyle()
From source file:de.tum.in.tumcampus.auxiliary.calendar.DayView.java
private void drawGridBackground(Rect r, Canvas canvas, Paint p) { Style savedStyle = p.getStyle(); final float stopX = computeDayLeftPosition(mNumDays); float y = 0;// ww w. j a v a 2 s . c o m final float deltaY = mCellHeight + HOUR_GAP; int linesIndex = 0; final float startY = 0; final float stopY = HOUR_GAP + 24 * (mCellHeight + HOUR_GAP); float x = mHoursWidth; // Draw the inner horizontal grid lines p.setColor(mCalendarGridLineInnerHorizontalColor); p.setStrokeWidth(GRID_LINE_INNER_WIDTH); p.setAntiAlias(false); y = 0; linesIndex = 0; for (int hour = 0; hour <= 24; hour++) { mLines[linesIndex++] = GRID_LINE_LEFT_MARGIN; mLines[linesIndex++] = y; mLines[linesIndex++] = stopX; mLines[linesIndex++] = y; y += deltaY; } if (mCalendarGridLineInnerVerticalColor != mCalendarGridLineInnerHorizontalColor) { canvas.drawLines(mLines, 0, linesIndex, p); linesIndex = 0; p.setColor(mCalendarGridLineInnerVerticalColor); } // Draw the inner vertical grid lines for (int day = 0; day <= mNumDays; day++) { x = computeDayLeftPosition(day); mLines[linesIndex++] = x; mLines[linesIndex++] = startY; mLines[linesIndex++] = x; mLines[linesIndex++] = stopY; } canvas.drawLines(mLines, 0, linesIndex, p); // Restore the saved style. p.setStyle(savedStyle); p.setAntiAlias(true); }
From source file:com.jjoe64.graphview.series.LineGraphSeries.java
/** * plots the series/*from w ww . ja v a 2 s . c o m*/ * draws the line and the background * * @param graphView graphview * @param canvas canvas * @param isSecondScale flag if it is the second scale */ @Override public void draw(GraphView graphView, Canvas canvas, boolean isSecondScale) { resetDataPoints(); // get data double maxX = graphView.getViewport().getMaxX(false); double minX = graphView.getViewport().getMinX(false); double maxY; double minY; if (isSecondScale) { maxY = graphView.getSecondScale().getMaxY(false); minY = graphView.getSecondScale().getMinY(false); } else { maxY = graphView.getViewport().getMaxY(false); minY = graphView.getViewport().getMinY(false); } Iterator<E> values = getValues(minX, maxX); // draw background double lastEndY = 0; double lastEndX = 0; // draw data mPaint.setStrokeWidth(mStyles.thickness); mPaint.setColor(getColor()); mPaintBackground.setColor(mStyles.backgroundColor); Paint paint; if (mCustomPaint != null) { paint = mCustomPaint; } else { paint = mPaint; } mPath.reset(); if (mStyles.drawBackground) { mPathBackground.reset(); } double diffY = maxY - minY; double diffX = maxX - minX; float graphHeight = graphView.getGraphContentHeight(); float graphWidth = graphView.getGraphContentWidth(); float graphLeft = graphView.getGraphContentLeft(); float graphTop = graphView.getGraphContentTop(); lastEndY = 0; lastEndX = 0; // needed to end the path for background double lastUsedEndX = 0; double lastUsedEndY = 0; float firstX = -1; float firstY = -1; float lastRenderedX = Float.NaN; int i = 0; float lastAnimationReferenceX = graphLeft; boolean sameXSkip = false; float minYOnSameX = 0f; float maxYOnSameX = 0f; while (values.hasNext()) { E value = values.next(); double valY = value.getY() - minY; double ratY = valY / diffY; double y = graphHeight * ratY; double valueX = value.getX(); double valX = valueX - minX; double ratX = valX / diffX; double x = graphWidth * ratX; double orgX = x; double orgY = y; if (i > 0) { // overdraw boolean isOverdrawY = false; boolean isOverdrawEndPoint = false; boolean skipDraw = false; if (x > graphWidth) { // end right double b = ((graphWidth - lastEndX) * (y - lastEndY) / (x - lastEndX)); y = lastEndY + b; x = graphWidth; isOverdrawEndPoint = true; } if (y < 0) { // end bottom // skip when previous and this point is out of bound if (lastEndY < 0) { skipDraw = true; } else { double b = ((0 - lastEndY) * (x - lastEndX) / (y - lastEndY)); x = lastEndX + b; } y = 0; isOverdrawY = isOverdrawEndPoint = true; } if (y > graphHeight) { // end top // skip when previous and this point is out of bound if (lastEndY > graphHeight) { skipDraw = true; } else { double b = ((graphHeight - lastEndY) * (x - lastEndX) / (y - lastEndY)); x = lastEndX + b; } y = graphHeight; isOverdrawY = isOverdrawEndPoint = true; } if (lastEndX < 0) { // start left double b = ((0 - x) * (y - lastEndY) / (lastEndX - x)); lastEndY = y - b; lastEndX = 0; } // we need to save the X before it will be corrected when overdraw y float orgStartX = (float) lastEndX + (graphLeft + 1); if (lastEndY < 0) { // start bottom if (!skipDraw) { double b = ((0 - y) * (x - lastEndX) / (lastEndY - y)); lastEndX = x - b; } lastEndY = 0; isOverdrawY = true; } if (lastEndY > graphHeight) { // start top // skip when previous and this point is out of bound if (!skipDraw) { double b = ((graphHeight - y) * (x - lastEndX) / (lastEndY - y)); lastEndX = x - b; } lastEndY = graphHeight; isOverdrawY = true; } float startX = (float) lastEndX + (graphLeft + 1); float startY = (float) (graphTop - lastEndY) + graphHeight; float endX = (float) x + (graphLeft + 1); float endY = (float) (graphTop - y) + graphHeight; float startXAnimated = startX; float endXAnimated = endX; if (endX < startX) { // dont draw from right to left skipDraw = true; } // NaN can happen when previous and current value is out of y bounds if (!skipDraw && !Float.isNaN(startY) && !Float.isNaN(endY)) { // animation if (mAnimated) { if ((Double.isNaN(mLastAnimatedValue) || mLastAnimatedValue < valueX)) { long currentTime = System.currentTimeMillis(); if (mAnimationStart == 0) { // start animation mAnimationStart = currentTime; mAnimationStartFrameNo = 0; } else { // anti-lag: wait a few frames if (mAnimationStartFrameNo < 15) { // second time mAnimationStart = currentTime; mAnimationStartFrameNo++; } } float timeFactor = (float) (currentTime - mAnimationStart) / ANIMATION_DURATION; float factor = mAnimationInterpolator.getInterpolation(timeFactor); if (timeFactor <= 1.0) { startXAnimated = (startX - lastAnimationReferenceX) * factor + lastAnimationReferenceX; startXAnimated = Math.max(startXAnimated, lastAnimationReferenceX); endXAnimated = (endX - lastAnimationReferenceX) * factor + lastAnimationReferenceX; ViewCompat.postInvalidateOnAnimation(graphView); } else { // animation finished mLastAnimatedValue = valueX; } } else { lastAnimationReferenceX = endX; } } // draw data point if (!isOverdrawEndPoint) { if (mStyles.drawDataPoints) { // draw first datapoint Paint.Style prevStyle = paint.getStyle(); paint.setStyle(Paint.Style.FILL); canvas.drawCircle(endXAnimated, endY, mStyles.dataPointsRadius, paint); paint.setStyle(prevStyle); } registerDataPoint(endX, endY, value); } if (mDrawAsPath) { mPath.moveTo(startXAnimated, startY); } // performance opt. if (Float.isNaN(lastRenderedX) || Math.abs(endX - lastRenderedX) > .3f) { if (mDrawAsPath) { mPath.lineTo(endXAnimated, endY); } else { // render vertical lines that were skipped if (sameXSkip) { sameXSkip = false; renderLine(canvas, new float[] { lastRenderedX, minYOnSameX, lastRenderedX, maxYOnSameX }, paint); } renderLine(canvas, new float[] { startXAnimated, startY, endXAnimated, endY }, paint); } lastRenderedX = endX; } else { // rendering on same x position // save min+max y position and render it as line if (sameXSkip) { minYOnSameX = Math.min(minYOnSameX, endY); maxYOnSameX = Math.max(maxYOnSameX, endY); } else { // first sameXSkip = true; minYOnSameX = Math.min(startY, endY); maxYOnSameX = Math.max(startY, endY); } } } if (mStyles.drawBackground) { if (isOverdrawY) { // start draw original x if (firstX == -1) { firstX = orgStartX; firstY = startY; mPathBackground.moveTo(orgStartX, startY); } // from original start to new start mPathBackground.lineTo(startXAnimated, startY); } if (firstX == -1) { firstX = startXAnimated; firstY = startY; mPathBackground.moveTo(startXAnimated, startY); } mPathBackground.lineTo(startXAnimated, startY); mPathBackground.lineTo(endXAnimated, endY); } lastUsedEndX = endXAnimated; lastUsedEndY = endY; } else if (mStyles.drawDataPoints) { //fix: last value not drawn as datapoint. Draw first point here, and then on every step the end values (above) float first_X = (float) x + (graphLeft + 1); float first_Y = (float) (graphTop - y) + graphHeight; if (first_X >= graphLeft && first_Y <= (graphTop + graphHeight)) { if (mAnimated && (Double.isNaN(mLastAnimatedValue) || mLastAnimatedValue < valueX)) { long currentTime = System.currentTimeMillis(); if (mAnimationStart == 0) { // start animation mAnimationStart = currentTime; } float timeFactor = (float) (currentTime - mAnimationStart) / ANIMATION_DURATION; float factor = mAnimationInterpolator.getInterpolation(timeFactor); if (timeFactor <= 1.0) { first_X = (first_X - lastAnimationReferenceX) * factor + lastAnimationReferenceX; ViewCompat.postInvalidateOnAnimation(graphView); } else { // animation finished mLastAnimatedValue = valueX; } } Paint.Style prevStyle = paint.getStyle(); paint.setStyle(Paint.Style.FILL); canvas.drawCircle(first_X, first_Y, mStyles.dataPointsRadius, paint); paint.setStyle(prevStyle); } } lastEndY = orgY; lastEndX = orgX; i++; } if (mDrawAsPath) { // draw at the end canvas.drawPath(mPath, paint); } if (mStyles.drawBackground && firstX != -1) { // end / close path if (lastUsedEndY != graphHeight + graphTop) { // dont draw line to same point, otherwise the path is completely broken mPathBackground.lineTo((float) lastUsedEndX, graphHeight + graphTop); } mPathBackground.lineTo(firstX, graphHeight + graphTop); if (firstY != graphHeight + graphTop) { // dont draw line to same point, otherwise the path is completely broken mPathBackground.lineTo(firstX, firstY); } //mPathBackground.close(); canvas.drawPath(mPathBackground, mPaintBackground); } }
From source file:p5e610.graphview.series.LineGraphSeries.java
/** * plots the series/*from w ww. j ava 2 s . co m*/ * draws the line and the background * * @param graphView graphview * @param canvas canvas * @param isSecondScale flag if it is the second scale */ @Override public void draw(GraphView graphView, Canvas canvas, boolean isSecondScale) { resetDataPoints(); // get data double maxY = Double.NEGATIVE_INFINITY; double maxX = Double.NEGATIVE_INFINITY; double minY = Double.POSITIVE_INFINITY; double minX = Double.POSITIVE_INFINITY; boolean minXSet = graphView.getViewport().getMinX(false) != null; boolean maxXSet = graphView.getViewport().getMaxX(false) != null; boolean minYSet = graphView.getViewport().getMinY(false) != null; boolean maxYSet = graphView.getViewport().getMaxY(false) != null; if (minXSet) minX = graphView.getViewport().getMinX(false); if (maxXSet) { maxX = graphView.getViewport().getMaxX(false); } if (minYSet) { minY = graphView.getViewport().getMinY(false); } if (maxYSet) { maxY = graphView.getViewport().getMaxY(false); } for (E val : mData) { double currX = val.getX(); double currY = val.getY(); if (currX > maxX && !maxXSet) maxX = currX; if (currY > maxY && !maxYSet) maxY = currY; if (currX < minX && !minXSet) minX = currX; if (currY < minY && !minYSet) minY = currY; } Iterator<E> values = getValues(minX, maxX); // draw background double lastEndY = 0; double lastEndX = 0; // draw data mPaint.setStrokeWidth(mStyles.thickness); mPaint.setColor(getColor()); mPaintBackground.setColor(mStyles.backgroundColor); Paint paint; if (mCustomPaint != null) { paint = mCustomPaint; } else { paint = mPaint; } mPath.reset(); if (mStyles.drawBackground) { mPathBackground.reset(); } double diffY = maxY - minY; double diffX = maxX - minX; float graphHeight = graphView.getGraphContentHeight(); float graphWidth = graphView.getGraphContentWidth(); float graphLeft = graphView.getGraphContentLeft(); float graphTop = graphView.getGraphContentTop(); lastEndY = 0; lastEndX = 0; // needed to end the path for background double lastUsedEndX = 0; double lastUsedEndY = 0; float firstX = -1; float firstY = -1; float lastRenderedX = Float.NaN; int i = 0; float lastAnimationReferenceX = graphLeft; boolean sameXSkip = false; float minYOnSameX = 0f; float maxYOnSameX = 0f; while (values.hasNext()) { E value = values.next(); double valY = value.getY() - minY; double ratY = valY / diffY; double y = graphHeight * ratY; double valueX = value.getX(); double valX = valueX - minX; double ratX = valX / diffX; double x = graphWidth * ratX; double orgX = x; double orgY = y; if (i > 0) { // overdraw boolean isOverdrawY = false; boolean isOverdrawEndPoint = false; boolean skipDraw = false; if (x > graphWidth) { // end right double b = ((graphWidth - lastEndX) * (y - lastEndY) / (x - lastEndX)); y = lastEndY + b; x = graphWidth; isOverdrawEndPoint = true; } if (y < 0) { // end bottom // skip when previous and this point is out of bound if (lastEndY < 0) { skipDraw = true; } else { double b = ((0 - lastEndY) * (x - lastEndX) / (y - lastEndY)); x = lastEndX + b; } y = 0; isOverdrawY = isOverdrawEndPoint = true; } if (y > graphHeight) { // end top // skip when previous and this point is out of bound if (lastEndY > graphHeight) { skipDraw = true; } else { double b = ((graphHeight - lastEndY) * (x - lastEndX) / (y - lastEndY)); x = lastEndX + b; } y = graphHeight; isOverdrawY = isOverdrawEndPoint = true; } if (lastEndX < 0) { // start left double b = ((0 - x) * (y - lastEndY) / (lastEndX - x)); lastEndY = y - b; lastEndX = 0; } // we need to save the X before it will be corrected when overdraw y float orgStartX = (float) lastEndX + (graphLeft + 1); if (lastEndY < 0) { // start bottom if (!skipDraw) { double b = ((0 - y) * (x - lastEndX) / (lastEndY - y)); lastEndX = x - b; } lastEndY = 0; isOverdrawY = true; } if (lastEndY > graphHeight) { // start top // skip when previous and this point is out of bound if (!skipDraw) { double b = ((graphHeight - y) * (x - lastEndX) / (lastEndY - y)); lastEndX = x - b; } lastEndY = graphHeight; isOverdrawY = true; } float startX = (float) lastEndX + (graphLeft + 1); float startY = (float) (graphTop - lastEndY) + graphHeight; float endX = (float) x + (graphLeft + 1); float endY = (float) (graphTop - y) + graphHeight; float startXAnimated = startX; float endXAnimated = endX; // if (endX < startX) { // // dont draw from right to left // skipDraw = true; // } // NaN can happen when previous and current value is out of y bounds if (!skipDraw && !Float.isNaN(startY) && !Float.isNaN(endY)) { // animation if (mAnimated) { if ((Double.isNaN(mLastAnimatedValue) || mLastAnimatedValue < valueX)) { long currentTime = System.currentTimeMillis(); if (mAnimationStart == 0) { // start animation mAnimationStart = currentTime; mAnimationStartFrameNo = 0; } else { // anti-lag: wait a few frames if (mAnimationStartFrameNo < 15) { // second time mAnimationStart = currentTime; mAnimationStartFrameNo++; } } float timeFactor = (float) (currentTime - mAnimationStart) / ANIMATION_DURATION; float factor = mAnimationInterpolator.getInterpolation(timeFactor); if (timeFactor <= 1.0) { startXAnimated = (startX - lastAnimationReferenceX) * factor + lastAnimationReferenceX; startXAnimated = Math.max(startXAnimated, lastAnimationReferenceX); endXAnimated = (endX - lastAnimationReferenceX) * factor + lastAnimationReferenceX; ViewCompat.postInvalidateOnAnimation(graphView); } else { // animation finished mLastAnimatedValue = valueX; } } else { lastAnimationReferenceX = endX; } } // draw data point if (!isOverdrawEndPoint) { if (mStyles.drawDataPoints) { // draw first datapoint Paint.Style prevStyle = paint.getStyle(); paint.setStyle(Paint.Style.FILL); canvas.drawCircle(endXAnimated, endY, mStyles.dataPointsRadius, paint); paint.setStyle(prevStyle); } registerDataPoint(endX, endY, value); } if (mDrawAsPath) { mPath.moveTo(startXAnimated, startY); } // performance opt. if (Float.isNaN(lastRenderedX) || Math.abs(endX - lastRenderedX) > .3f) { if (mDrawAsPath) { mPath.lineTo(endXAnimated, endY); } else { // render vertical lines that were skipped if (sameXSkip) { sameXSkip = false; renderLine(canvas, new float[] { lastRenderedX, minYOnSameX, lastRenderedX, maxYOnSameX }, paint); } renderLine(canvas, new float[] { startXAnimated, startY, endXAnimated, endY }, paint); } lastRenderedX = endX; } else { // rendering on same x position // save min+max y position and render it as line if (sameXSkip) { minYOnSameX = Math.min(minYOnSameX, endY); maxYOnSameX = Math.max(maxYOnSameX, endY); } else { // first sameXSkip = true; minYOnSameX = Math.min(startY, endY); maxYOnSameX = Math.max(startY, endY); } } } if (mStyles.drawBackground) { if (isOverdrawY) { // start draw original x if (firstX == -1) { firstX = orgStartX; firstY = startY; mPathBackground.moveTo(orgStartX, startY); } // from original start to new start mPathBackground.lineTo(startXAnimated, startY); } if (firstX == -1) { firstX = startXAnimated; firstY = startY; mPathBackground.moveTo(startXAnimated, startY); } mPathBackground.lineTo(startXAnimated, startY); mPathBackground.lineTo(endXAnimated, endY); } lastUsedEndX = endXAnimated; lastUsedEndY = endY; } else if (mStyles.drawDataPoints) { //fix: last value not drawn as datapoint. Draw first point here, and then on every step the end values (above) float first_X = (float) x + (graphLeft + 1); float first_Y = (float) (graphTop - y) + graphHeight; if (first_X >= graphLeft && first_Y <= (graphTop + graphHeight)) { if (mAnimated && (Double.isNaN(mLastAnimatedValue) || mLastAnimatedValue < valueX)) { long currentTime = System.currentTimeMillis(); if (mAnimationStart == 0) { // start animation mAnimationStart = currentTime; } float timeFactor = (float) (currentTime - mAnimationStart) / ANIMATION_DURATION; float factor = mAnimationInterpolator.getInterpolation(timeFactor); if (timeFactor <= 1.0) { first_X = (first_X - lastAnimationReferenceX) * factor + lastAnimationReferenceX; ViewCompat.postInvalidateOnAnimation(graphView); } else { // animation finished mLastAnimatedValue = valueX; } } Paint.Style prevStyle = paint.getStyle(); paint.setStyle(Paint.Style.FILL); canvas.drawCircle(first_X, first_Y, mStyles.dataPointsRadius, paint); paint.setStyle(prevStyle); } } lastEndY = orgY; lastEndX = orgX; i++; } if (mDrawAsPath) { // draw at the end canvas.drawPath(mPath, paint); } if (mStyles.drawBackground && firstX != -1) { // end / close path if (lastUsedEndY != graphHeight + graphTop) { // dont draw line to same point, otherwise the path is completely broken mPathBackground.lineTo((float) lastUsedEndX, graphHeight + graphTop); } mPathBackground.lineTo(firstX, graphHeight + graphTop); if (firstY != graphHeight + graphTop) { // dont draw line to same point, otherwise the path is completely broken mPathBackground.lineTo(firstX, firstY); } //mPathBackground.close(); canvas.drawPath(mPathBackground, mPaintBackground); } }