下面列出了怎么用android.graphics.drawable.shapes.PathShape的API类实例代码及写法,或者点击链接到github查看源代码。
private void drawDocumentBox(Point[] points, Size stdSize) {
Path path = new Path();
HUDCanvasView hud = mMainActivity.getHUD();
// ATTENTION: axis are swapped
float previewWidth = (float) stdSize.height;
float previewHeight = (float) stdSize.width;
path.moveTo( previewWidth - (float) points[0].y, (float) points[0].x );
path.lineTo( previewWidth - (float) points[1].y, (float) points[1].x );
path.lineTo( previewWidth - (float) points[2].y, (float) points[2].x );
path.lineTo( previewWidth - (float) points[3].y, (float) points[3].x );
path.close();
PathShape newBox = new PathShape(path , previewWidth , previewHeight);
Paint paint = new Paint();
paint.setColor(Color.argb(64, 0, 255, 0));
Paint border = new Paint();
border.setColor(Color.rgb(0, 255, 0));
border.setStrokeWidth(5);
hud.clear();
hud.addShape(newBox, paint, border);
mMainActivity.invalidateHUD();
}
/**
* 1. Iterating over the path points, saving them in an array ... not bueno. Try to use
* {@link android.graphics.PathMeasure} class and get minX and minY from that.
* <p>
* 2. Scale bitmap down. Currently drawing at density of device.
*/
public Bitmap createSignatureBitmap() {
Paint bitmapSigPaint = new Paint(sigPaint);
bitmapSigPaint.setColor(sigPrintColor);
RectF sigBounds = new RectF();
sigPath.computeBounds(sigBounds, true);
if (sigBounds.width() != 0 && sigBounds.height() != 0) {
float density = getResources().getDisplayMetrics().density;
int dipWidth = (int) (sigBounds.width() / density);
int dipHeight = (int) (sigBounds.height() / density);
Bitmap returnedBitmap = Bitmap.createBitmap(dipWidth, dipHeight,
Bitmap.Config.ARGB_4444);
float minX = Integer.MAX_VALUE;
float minY = Integer.MAX_VALUE;
for (LinePathPoint point : sigPoints) {
minX = Math.min(minX, point.x);
minY = Math.min(minY, point.y);
}
sigPath.offset(-minX, -minY);
PathShape pathShape = new PathShape(sigPath, sigBounds.width(), sigBounds.height());
pathShape.resize(dipWidth, dipHeight);
Canvas canvas = new Canvas(returnedBitmap);
pathShape.draw(canvas, bitmapSigPaint);
return returnedBitmap;
}
return null;
}
public void crossLineButtonClick(View view){
Path path = new Path();
path.moveTo(0, 12);
path.lineTo(100, 88);
ShapeBackgroundSpan shapeSpan = new ShapeBackgroundSpan(0xFF000000, new PathShape(path, 100, 100), true);
shapeSpan.setStrokeWidth(6);
textView.setSelectionSpan(shapeSpan, new ArrowBackgroundSpan(0xFF7373, 0x22000000));
}
public void crossLineButtonClick(View view){
Path path = new Path();
path.moveTo(0, 12);
path.lineTo(100, 88);
ShapeBackgroundSpan shapeSpan = new ShapeBackgroundSpan(0xFF000000, new PathShape(path, 100, 100), true);
shapeSpan.setStrokeWidth(6);
editText.setSelectionSpan(shapeSpan, new ArrowBackgroundSpan(0xFF7373, 0x22000000));
}
/**
* Draw the graphic on the supplied canvas. Drawing should use the following methods to
* convert to view coordinates for the graphics that are drawn:
* <ol>
* <li>{@link GraphicOverlay.Graphic#scaleX(float)} and {@link GraphicOverlay.Graphic#scaleY(float)} adjust the size of
* the supplied value from the preview scale to the view scale.</li>
* <li>{@link GraphicOverlay.Graphic#translateX(float)} and {@link GraphicOverlay.Graphic#translateY(float)} adjust the
* coordinate from the preview's coordinate system to the view coordinate system.</li>
* </ol>
*
* @param canvas drawing canvas
*/
@Override
public void draw(Canvas canvas) {
//TODO fix the coordinates see http://zhengrui.github.io/android-coordinates.html
if(scannedDoc != null && scannedDoc.detectedQuad != null){
//boolean isPortrait = Util.isPortraitMode(mOverlay.getContext());
Path path = new Path();
/*
Log.d("DOC-GRAPHIC", "IsPortrait? " + isPortrait);
float tlX = isPortrait? translateY((float) scannedDoc.detectedQuad.points[0].y):translateX((float) scannedDoc.detectedQuad.points[0].x);
float tlY = isPortrait? translateX((float) scannedDoc.detectedQuad.points[0].x):translateY((float) scannedDoc.detectedQuad.points[0].y);
Log.d("DOC-GRAPHIC", "Top left: x: " + scannedDoc.detectedQuad.points[0].x + ", y: " + scannedDoc.detectedQuad.points[0].y
+ " -> x: " + tlX + ", y: " + tlY);
float blX = isPortrait? translateY((float) scannedDoc.detectedQuad.points[1].y):translateX((float) scannedDoc.detectedQuad.points[1].x);
float blY = isPortrait? translateX((float) scannedDoc.detectedQuad.points[1].x):translateY((float) scannedDoc.detectedQuad.points[1].y);
Log.d("DOC-GRAPHIC", "Bottom left: x: " + scannedDoc.detectedQuad.points[1].x + ", y: " + scannedDoc.detectedQuad.points[1].y
+ " -> x: " + blX + ", y: " + blY);
float brX = isPortrait? translateY((float) scannedDoc.detectedQuad.points[2].y):translateX((float) scannedDoc.detectedQuad.points[2].x);
float brY = isPortrait? translateX((float) scannedDoc.detectedQuad.points[2].x):translateY((float) scannedDoc.detectedQuad.points[2].y);
Log.d("DOC-GRAPHIC", "Bottom right: x: " + scannedDoc.detectedQuad.points[2].x + ", y: " + scannedDoc.detectedQuad.points[2].y
+ " -> x: " + brX + ", y: " + brY);
float trX = isPortrait? translateY((float) scannedDoc.detectedQuad.points[3].y):translateX((float) scannedDoc.detectedQuad.points[3].x);
float trY = isPortrait? translateX((float) scannedDoc.detectedQuad.points[3].x):translateY((float) scannedDoc.detectedQuad.points[3].y);
Log.d("DOC-GRAPHIC", "Top right: x: " + scannedDoc.detectedQuad.points[3].x + ", y: " + scannedDoc.detectedQuad.points[3].y
+ " -> x: " + trX + ", y: " + trY);
*/
int frameWidth = scannedDoc.getImage().getMetadata().getHeight();
path.moveTo(((float)(frameWidth - scannedDoc.detectedQuad.points[0].y)), ((float)scannedDoc.detectedQuad.points[0].x));
path.lineTo(((float)(frameWidth - scannedDoc.detectedQuad.points[1].y)), ((float)scannedDoc.detectedQuad.points[1].x));
path.lineTo(((float)(frameWidth - scannedDoc.detectedQuad.points[2].y)), ((float)scannedDoc.detectedQuad.points[2].x));
path.lineTo(((float)(frameWidth - scannedDoc.detectedQuad.points[3].y)), ((float)scannedDoc.detectedQuad.points[3].x));
path.close();
PathShape shape = new PathShape(path, scannedDoc.getImage().getMetadata().getHeight(), scannedDoc.getImage().getMetadata().getWidth());
shape.resize(canvas.getWidth(), canvas.getHeight());
shape.draw(canvas, bodyPaint);
shape.draw(canvas, borderPaint);
//canvas.drawPath(path, borderPaint);
//canvas.drawPath(path, bodyPaint);
Log.d("DOC-GRAPHIC", "DONE DRAWING");
}
}
private void drawDocumentBox(Point[] points, Size stdSize) {
Path path = new Path();
HUDCanvasView hud = mMainActivity.getHUD();
// ATTENTION: axis are swapped
float previewWidth = (float) stdSize.height;
float previewHeight = (float) stdSize.width;
path.moveTo( previewWidth - (float) points[0].y, (float) points[0].x );
path.lineTo( previewWidth - (float) points[1].y, (float) points[1].x );
path.lineTo( previewWidth - (float) points[2].y, (float) points[2].x );
path.lineTo( previewWidth - (float) points[3].y, (float) points[3].x );
path.close();
PathShape newBox = new PathShape(path , previewWidth , previewHeight);
Paint paint = new Paint();
paint.setColor(Color.argb(180, 66, 165, 245));
Paint border = new Paint();
border.setColor(Color.rgb(66, 165, 245));
border.setStrokeWidth(5);
hud.clear();
hud.addShape(newBox, paint, border);
mMainActivity.invalidateHUD();
}