2000px 사이즈 이미지를 사용하여 멀티터치를 구현하였는데 앱 처음 실행시 확대된 상태에서 귀퉁이 일부분만 보입니다.
처음 실행시엔 디스플레이 화면에 맞춘 크기 였다가 멀티 터치를 시작하면 확대 되게 하려는데 잘 안되네요 조언 부탁드립니다.
---.Java----
import android.app.Activity;
import android.graphics.Matrix;
import android.graphics.PointF;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.FloatMath;
import android.util.Log;
//import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
//import android.view.WindowManager;
import android.widget.ImageView;
public class Touch extends Activity implements OnTouchListener {
private static final String TAG = "Touch";
Matrix matrix = new Matrix();
Matrix savedMatrix = new Matrix();
Matrix savedMatrix2 = new Matrix();
static final int NONE = 0;
static final int DRAG = 1;
static final int ZOOM = 2;
int mode = NONE;
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 1f;
private static final int WIDTH = 0;
private static final int HEIGHT = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
ImageView view = (ImageView) findViewById(R.id.imageView);
view.setOnTouchListener(this);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
ImageView view = (ImageView) v;
dumpEvent(event);
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
start.set(event.getX(), event.getY());
Log.d(TAG, "mode=DRAG");
mode = DRAG;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
Log.d(TAG, "oldDist=" + oldDist);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(mid, event);
mode = ZOOM;
Log.d(TAG, "mode=ZOOM");
}
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
Log.d(TAG, "mode=NONE");
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - start.x,
event.getY() - start.y);
}
else if (mode == ZOOM) {
float newDist = spacing(event);
Log.d(TAG, "newDist=" + newDist);
if (newDist > 10f) {
matrix.set(savedMatrix);
float scale = newDist / oldDist;
matrix.postScale(scale, scale, mid.x, mid.y);
}
}
break;
}
matrixTurning(matrix, view);
view.setImageMatrix(matrix);
return true;
}
private void matrixTurning(Matrix matrix2, ImageView view) {
float[] value = new float[9];
matrix.getValues(value);
float[] savedValue = new float[9];
savedMatrix2.getValues(savedValue);
int width = view.getWidth();
int height = view.getHeight();
Drawable d = view.getDrawable();
if (d == null) return;
int imageWidth = d.getIntrinsicWidth();
int imageHeight = d.getIntrinsicHeight();
int scaleWidth = (int) (imageWidth * value[0]);
int scaleHeight = (int) (imageHeight * value[4]);
if (value[2] < width - scaleWidth) value[2] = width - scaleWidth;
if (value[5] < height - scaleHeight) value[5] = height - scaleHeight;
if (value[2] > 0) value[2] = 0;
if (value[5] > 0) value[5] = 0;
// 이상 확대 하지 않도록
if (value[0] > 1 || value[4] > 1){
value[0] = savedValue[0];
value[4] = savedValue[4];
value[2] = savedValue[2];
value[5] = savedValue[5];
}
// 화면보다 작게 축소 하지 않도록
if (imageWidth > width || imageHeight > height){
if (scaleWidth < width && scaleHeight < height){
int target = WIDTH;
if (imageWidth < imageHeight) target = HEIGHT;
if (target == WIDTH) value[0] = value[4] = (float)width / imageWidth;
if (target == HEIGHT) value[0] = value[4] = (float)height / imageHeight;
scaleWidth = (int) (imageWidth * value[0]);
scaleHeight = (int) (imageHeight * value[4]);
if (scaleWidth > width) value[0] = value[4] = (float)width / imageWidth;
if (scaleHeight > height) value[0] = value[4] = (float)height / imageHeight;
}
}
// 원래부터 작은 얘들은 본래 크기보다 작게 하지 않도록
else{
if (value[0] < 1) value[0] = 1;
if (value[4] < 1) value[4] = 1;
}
// 그리고 가운데 위치하도록 한다.
scaleWidth = (int) (imageWidth * value[0]);
scaleHeight = (int) (imageHeight * value[4]);
if (scaleWidth < width){
value[2] = (float) width / 2 - (float)scaleWidth / 2;
}
if (scaleHeight < height){
value[5] = (float) height / 2 - (float)scaleHeight / 2;
}
matrix.setValues(value);
savedMatrix2.set(matrix);
}
private void dumpEvent(MotionEvent event) {
String names[] = { "DOWN", "UP", "MOVE", "CANCEL", "OUTSIDE",
"POINTER_DOWN", "POINTER_UP", "7?", "8?", "9?" };
StringBuilder sb = new StringBuilder();
int action = event.getAction();
int actionCode = action & MotionEvent.ACTION_MASK;
sb.append("event ACTION_").append(names[actionCode]);
if (actionCode == MotionEvent.ACTION_POINTER_DOWN
|| actionCode == MotionEvent.ACTION_POINTER_UP) {
sb.append("(pid ").append(
action >> MotionEvent.ACTION_POINTER_ID_SHIFT);
sb.append(")");
}
sb.append("[");
for (int i = 0; i < event.getPointerCount(); i++) {
sb.append("#").append(i);
sb.append("(pid ").append(event.getPointerId(i));
sb.append(")=").append((int) event.getX(i));
sb.append(",").append((int) event.getY(i));
if (i + 1 < event.getPointerCount())
sb.append(";");
}
sb.append("]");
Log.d(TAG, sb.toString());
}
private float spacing(MotionEvent event) {
float x = event.getX(0) - event.getX(1);
float y = event.getY(0) - event.getY(1);
return FloatMath.sqrt(x * x + y * y);
}
private void midPoint(PointF point, MotionEvent event) {
float x = event.getX(0) + event.getX(1);
float y = event.getY(0) + event.getY(1);
point.set(x / 2, y / 2);
}
}
---.xml----
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView android:id="@+id/imageView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:src="@drawable/newsbrief02"
android:scaleType="matrix">
</ImageView>
</FrameLayout>