Yes, see:
http://developer.android.com/reference/android/graphics/Canvas.html#Canvas(android.graphics.Bitmap)
On Tue, Jun 28, 2011 at 10:56 AM, New Developer <secur...@isscp.com> wrote:
> Is there a way to take the
> canvas and save it as a bitmap perhaps ?
> On Jun 28, 2011, at 1:31 PM, New Developer wrote:
>
> Okay I had re-written some of this
> onDraw just handles drawing and canvas operations, ONLY
> lines is a Vector Vector<line> lines;
> @Override
> protected void onDraw(Canvas canvas) {
> canvas.drawBitmap(mBitmap , matrix , mPaint);
> String result;
> if (lines != null) {
> for (int count = 0; count < lines.size(); count++ ) {
> mPaint.setColor(Color.BLUE);
> canvas.drawLine( lines.get(count).getStart().x ,
> lines.get(count).getStart().y , lines.get(count).getStop().x ,
> lines.get(count).getStop().y , mPaint);
> result = "";
> result = String.format("%4.3f mm", lines.get(count).getDistance() /
> factor );
> canvas.drawText( result , lines.get(count).getMidPt().x ,
> lines.get(count).getMidPt().y , mPaint);
> }
> }
> }
> Now the TOUCH_UP calls touch_end so say I have finished finding the point.
> private void touch_end(float x, float y) {
> ((ViewGroup) super.getParent()).removeView(pointer);
> if (touch_counter == 1) {
> pointA = new PointF();
> pointA.x = ((x - 32.0f));
> pointA.y = ((y - 70.0f));
> } else if (touch_counter == 2) {
> pointB = new PointF();
> pointB.x = ((x - 32.0f));
> pointB.y = ((y - 70.0f));
> }
>
> if (touch_counter == 2 ) {
> line newLine = new line();
> newLine.setStart(pointA);
> newLine.setStop(pointB);
> lines.add(newLine);
> invalidate();
> pointA = null; pointB = null;
> pointC = null; newLine = null;
> touch_counter = 0;
> }
> }
> Progress ! ! that is now draws the line and writes the measurement.
> But when I zoom in the line stays where it was and does not zoom with
> the whole image ??
> how can I make the line adjust with the zoom of the image ??
> Thanks in advance
>
> On Jun 27, 2011, at 10:11 PM, Miguel Morales wrote:
>
> Hmm, doesn't look like you are.
>
> Try drawing on the bitmap itself and then set that for the ImageView.
> See:
> http://developer.android.com/reference/android/graphics/Canvas.html#Canvas(android.graphics.Bitmap)
>
> On Mon, Jun 27, 2011 at 6:00 PM, New Developer <secur...@isscp.com> wrote:
>
> within the function that has the drawline
>
> I first call super.draw()
>
> super.onDraw(canvas);
>
> layers[0] = new BitmapDrawable( mBitmap );
>
> //canvas.save();
>
> mPaint.setColor(Color.BLUE);
>
> canvas.drawLine(pointA.x, pointA.y, pointB.x, pointB.y, mPaint);
>
> canvas.drawText( result, ((newline.getDistance() * line.PX_TO_MM) / 3.0f),
>
> -6.0f, mPaint);
>
> //canvas.restore();
>
> super.setImageDrawable(layers[0]);
>
> So I "Think" I am drawing first is there anyway to check or verify this ??
>
> Thanks again
>
>
> On Jun 27, 2011, at 4:03 PM, Miguel Morales wrote:
>
> Make sure you are drawing your line after you draw your image
>
> On Mon, Jun 27, 2011 at 12:57 PM, New Developer <secur...@isscp.com> wrote:
>
> I'm using the following type of code to do panning and zooming on my own
>
> extension of an ImageView
>
> setBackgroundColor(Color.BLACK);
>
> matrix.postScale(newfactor , newfactor , mid.x , mid.y);
>
> setImageMatrix(matrix);
>
> Now I want to be able to draw lines on top of this image = = matrix
>
> currently I'm using
>
> mPaint.setColor(Color.BLUE);
>
> canvas.drawLine(pointA.x, pointA.y, pointB.x, pointB.y, mPaint);
>
> However this won't show up,
>
> so my question is How can I draw a line to the matrix variable used for
>
> zooming and panning ?
>
> Also I'm looking for tutorials on LayerDrawable if you know of any
>
> Thanks in advance
>
>
>
>
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