X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=android-libraries%2Fachartengine%2Fsrc%2Forg%2Fachartengine%2FTouchHandlerOld.java;fp=android-libraries%2Fachartengine%2Fsrc%2Forg%2Fachartengine%2FTouchHandlerOld.java;h=38b4f227b4701b5ea1b62ffc9f02146be12b44ae;hb=dfe153139b917cc91dddc1efa0298d4204616462;hp=0000000000000000000000000000000000000000;hpb=a2fe0ba2c348102bb0c6486b201be097523c2c9a;p=debian%2Fopenrocket

diff --git a/android-libraries/achartengine/src/org/achartengine/TouchHandlerOld.java b/android-libraries/achartengine/src/org/achartengine/TouchHandlerOld.java
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+++ b/android-libraries/achartengine/src/org/achartengine/TouchHandlerOld.java
@@ -0,0 +1,137 @@
+/**
+ * Copyright (C) 2009 - 2012 SC 4ViewSoft SRL
+ *  
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *  
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *  
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.achartengine;
+
+import org.achartengine.chart.AbstractChart;
+import org.achartengine.chart.RoundChart;
+import org.achartengine.chart.XYChart;
+import org.achartengine.renderer.DefaultRenderer;
+import org.achartengine.tools.Pan;
+import org.achartengine.tools.PanListener;
+import org.achartengine.tools.ZoomListener;
+
+import android.graphics.RectF;
+import android.view.MotionEvent;
+
+/**
+ * A handler implementation for touch events for older platforms.
+ */
+public class TouchHandlerOld implements ITouchHandler {
+  /** The chart renderer. */
+  private DefaultRenderer mRenderer;
+  /** The old x coordinate. */
+  private float oldX;
+  /** The old y coordinate. */
+  private float oldY;
+  /** The zoom buttons rectangle. */
+  private RectF zoomR = new RectF();
+  /** The pan tool. */
+  private Pan mPan;
+  /** The graphical view. */
+  private GraphicalView graphicalView;
+
+  /**
+   * Creates an implementation of the old version of the touch handler.
+   * 
+   * @param view the graphical view
+   * @param chart the chart to be drawn
+   */
+  public TouchHandlerOld(GraphicalView view, AbstractChart chart) {
+    graphicalView = view;
+    zoomR = graphicalView.getZoomRectangle();
+    if (chart instanceof XYChart) {
+      mRenderer = ((XYChart) chart).getRenderer();
+    } else {
+      mRenderer = ((RoundChart) chart).getRenderer();
+    }
+    if (mRenderer.isPanEnabled()) {
+      mPan = new Pan(chart);
+    }
+  }
+
+  public boolean handleTouch(MotionEvent event) {
+    int action = event.getAction();
+    if (mRenderer != null && action == MotionEvent.ACTION_MOVE) {
+      if (oldX >= 0 || oldY >= 0) {
+        float newX = event.getX();
+        float newY = event.getY();
+        if (mRenderer.isPanEnabled()) {
+          mPan.apply(oldX, oldY, newX, newY);
+        }
+        oldX = newX;
+        oldY = newY;
+        graphicalView.repaint();
+        return true;
+      }
+    } else if (action == MotionEvent.ACTION_DOWN) {
+      oldX = event.getX();
+      oldY = event.getY();
+      if (mRenderer != null && mRenderer.isZoomEnabled() && zoomR.contains(oldX, oldY)) {
+        if (oldX < zoomR.left + zoomR.width() / 3) {
+          graphicalView.zoomIn();
+        } else if (oldX < zoomR.left + zoomR.width() * 2 / 3) {
+          graphicalView.zoomOut();
+        } else {
+          graphicalView.zoomReset();
+        }
+        return true;
+      }
+    } else if (action == MotionEvent.ACTION_UP) {
+      oldX = 0;
+      oldY = 0;
+    }
+    return !mRenderer.isClickEnabled();
+  }
+
+  /**
+   * Adds a new zoom listener.
+   * 
+   * @param listener zoom listener
+   */
+  public void addZoomListener(ZoomListener listener) {
+  }
+
+  /**
+   * Removes a zoom listener.
+   * 
+   * @param listener zoom listener
+   */
+  public void removeZoomListener(ZoomListener listener) {
+  }
+
+  /**
+   * Adds a new pan listener.
+   * 
+   * @param listener pan listener
+   */
+  public void addPanListener(PanListener listener) {
+    if (mPan != null) {
+      mPan.addPanListener(listener);
+    }
+  }
+
+  /**
+   * Removes a pan listener.
+   * 
+   * @param listener pan listener
+   */
+  public void removePanListener(PanListener listener) {
+    if (mPan != null) {
+      mPan.removePanListener(listener);
+    }
+  }
+
+}
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