add sample for using colorfilters
diff --git a/samples/ApiDemos/AndroidManifest.xml b/samples/ApiDemos/AndroidManifest.xml
index fb34afa..9d25512 100644
--- a/samples/ApiDemos/AndroidManifest.xml
+++ b/samples/ApiDemos/AndroidManifest.xml
@@ -1562,6 +1562,13 @@
</intent-filter>
</activity>
+ <activity android:name=".graphics.ColorFilters" android:label="Graphics/ColorFilters">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.SAMPLE_CODE" />
+ </intent-filter>
+ </activity>
+
<activity android:name=".graphics.CreateBitmap" android:label="Graphics/CreateBitmap">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
diff --git a/samples/ApiDemos/res/drawable/btn_check_off.png b/samples/ApiDemos/res/drawable/btn_check_off.png
new file mode 100644
index 0000000..56d3861
--- /dev/null
+++ b/samples/ApiDemos/res/drawable/btn_check_off.png
Binary files differ
diff --git a/samples/ApiDemos/res/drawable/btn_check_on.png b/samples/ApiDemos/res/drawable/btn_check_on.png
new file mode 100644
index 0000000..791ac1d
--- /dev/null
+++ b/samples/ApiDemos/res/drawable/btn_check_on.png
Binary files differ
diff --git a/samples/ApiDemos/res/drawable/btn_circle_normal.png b/samples/ApiDemos/res/drawable/btn_circle_normal.png
new file mode 100644
index 0000000..fc5af1c
--- /dev/null
+++ b/samples/ApiDemos/res/drawable/btn_circle_normal.png
Binary files differ
diff --git a/samples/ApiDemos/res/drawable/btn_default_normal.9.png b/samples/ApiDemos/res/drawable/btn_default_normal.9.png
new file mode 100644
index 0000000..a2d5ccd
--- /dev/null
+++ b/samples/ApiDemos/res/drawable/btn_default_normal.9.png
Binary files differ
diff --git a/samples/ApiDemos/src/com/example/android/apis/graphics/ColorFilters.java b/samples/ApiDemos/src/com/example/android/apis/graphics/ColorFilters.java
new file mode 100644
index 0000000..92d18ba
--- /dev/null
+++ b/samples/ApiDemos/src/com/example/android/apis/graphics/ColorFilters.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * 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 com.example.android.apis.graphics;
+
+import com.example.android.apis.R;
+
+import android.app.Activity;
+import android.content.Context;
+import android.graphics.*;
+import android.graphics.drawable.*;
+import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.*;
+
+public class ColorFilters extends GraphicsActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(new SampleView(this));
+
+ }
+
+ private static class SampleView extends View {
+ private Activity mActivity;
+ private Drawable mDrawable;
+ private Drawable[] mDrawables;
+ private Paint mPaint;
+ private Paint mPaint2;
+ private float mPaintTextOffset;
+ private int[] mColors;
+ private PorterDuff.Mode[] mModes;
+ private int mModeIndex;
+
+ private static void addToTheRight(Drawable curr, Drawable prev) {
+ Rect r = prev.getBounds();
+ int x = r.right + 12;
+ int center = (r.top + r.bottom) >> 1;
+ int h = curr.getIntrinsicHeight();
+ int y = center - (h >> 1);
+
+ curr.setBounds(x, y, x + curr.getIntrinsicWidth(), y + h);
+ }
+
+ public SampleView(Activity activity) {
+ super(activity);
+ mActivity = activity;
+ Context context = activity;
+ setFocusable(true);
+
+ mDrawable = context.getResources().getDrawable(R.drawable.btn_default_normal);
+ mDrawable.setBounds(0, 0, 150, 48);
+ mDrawable.setDither(true);
+
+ int[] resIDs = new int[] {
+ R.drawable.btn_circle_normal,
+ R.drawable.btn_check_off,
+ R.drawable.btn_check_on
+ };
+ mDrawables = new Drawable[resIDs.length];
+ Drawable prev = mDrawable;
+ for (int i = 0; i < resIDs.length; i++) {
+ mDrawables[i] = context.getResources().getDrawable(resIDs[i]);
+ mDrawables[i].setDither(true);
+ addToTheRight(mDrawables[i], prev);
+ prev = mDrawables[i];
+ }
+
+ mPaint = new Paint();
+ mPaint.setAntiAlias(true);
+ mPaint.setTextSize(16);
+ mPaint.setTextAlign(Paint.Align.CENTER);
+
+ mPaint2 = new Paint(mPaint);
+ mPaint2.setAlpha(64);
+
+ Paint.FontMetrics fm = mPaint.getFontMetrics();
+ mPaintTextOffset = (fm.descent + fm.ascent) * 0.5f;
+
+ mColors = new int[] {
+ 0,
+ 0xCC0000FF,
+ 0x880000FF,
+ 0x440000FF,
+ 0xFFCCCCFF,
+ 0xFF8888FF,
+ 0xFF4444FF,
+ };
+
+ mModes = new PorterDuff.Mode[] {
+ PorterDuff.Mode.SRC_ATOP,
+ PorterDuff.Mode.MULTIPLY,
+ };
+ mModeIndex = 0;
+
+ updateTitle();
+ }
+
+ private void swapPaintColors() {
+ if (mPaint.getColor() == 0xFF000000) {
+ mPaint.setColor(0xFFFFFFFF);
+ mPaint2.setColor(0xFF000000);
+ } else {
+ mPaint.setColor(0xFF000000);
+ mPaint2.setColor(0xFFFFFFFF);
+ }
+ mPaint2.setAlpha(64);
+ }
+
+ private void updateTitle() {
+ mActivity.setTitle(mModes[mModeIndex].toString());
+ }
+
+ private void drawSample(Canvas canvas, ColorFilter filter) {
+ Rect r = mDrawable.getBounds();
+ float x = (r.left + r.right) * 0.5f;
+ float y = (r.top + r.bottom) * 0.5f - mPaintTextOffset;
+
+ mDrawable.setColorFilter(filter);
+ mDrawable.draw(canvas);
+ canvas.drawText("Label", x+1, y+1, mPaint2);
+ canvas.drawText("Label", x, y, mPaint);
+
+ for (Drawable dr : mDrawables) {
+ dr.setColorFilter(filter);
+ dr.draw(canvas);
+ }
+ }
+
+ @Override protected void onDraw(Canvas canvas) {
+ canvas.drawColor(0xFFCCCCCC);
+
+ canvas.translate(8, 12);
+ for (int color : mColors) {
+ ColorFilter filter;
+ if (color == 0) {
+ filter = null;
+ } else {
+ filter = new PorterDuffColorFilter(color,
+ mModes[mModeIndex]);
+ }
+ drawSample(canvas, filter);
+ canvas.translate(0, 55);
+ }
+ }
+
+ @Override
+ public boolean onTouchEvent(MotionEvent event) {
+ float x = event.getX();
+ float y = event.getY();
+ switch (event.getAction()) {
+ case MotionEvent.ACTION_DOWN:
+ break;
+ case MotionEvent.ACTION_MOVE:
+ break;
+ case MotionEvent.ACTION_UP:
+ // update mode every other time we change paint colors
+ if (mPaint.getColor() == 0xFFFFFFFF) {
+ mModeIndex = (mModeIndex + 1) % mModes.length;
+ updateTitle();
+ }
+ swapPaintColors();
+ invalidate();
+ break;
+ }
+ return true;
+ }
+ }
+}
+
