Merge pull request #42 from LonamiWebs/master

Allow saving to svg

app/src/main/java/com/simplemobiletools/draw/MyCanvas.java

@@ -94,6 +94,10 @@ public class MyCanvas extends View {
         return bitmap;
     }
 
+    public Map<MyPath,PaintOptions> getPaths() {
+        return mPaths;
+    }
+
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);

app/src/main/java/com/simplemobiletools/draw/MyPath.java

@@ -2,6 +2,11 @@ package com.simplemobiletools.draw;
 
 import android.graphics.Path;
 
+import com.simplemobiletools.draw.actions.Action;
+import com.simplemobiletools.draw.actions.Line;
+import com.simplemobiletools.draw.actions.Move;
+import com.simplemobiletools.draw.actions.Quad;
+
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.Serializable;
@@ -45,54 +50,7 @@ class MyPath extends Path implements Serializable {
         super.quadTo(x1, y1, x2, y2);
     }
 
-    private interface Action extends Serializable {
+    List<Action> getActions() {
-        void perform(Path path);
+        return actions;
-    }
-
-    private static final class Move implements Action {
-
-        private final float x, y;
-
-        Move(float x, float y) {
-            this.x = x;
-            this.y = y;
-        }
-
-        @Override
-        public void perform(Path path) {
-            path.moveTo(x, y);
-        }
-    }
-
-    private static final class Line implements Action {
-
-        private final float x, y;
-
-        Line(float x, float y) {
-            this.x = x;
-            this.y = y;
-        }
-
-        @Override
-        public void perform(Path path) {
-            path.lineTo(x, y);
-        }
-    }
-
-    private static final class Quad implements Action {
-
-        private final float x1, y1, x2, y2;
-
-        private Quad(float x1, float y1, float x2, float y2) {
-            this.x1 = x1;
-            this.y1 = y1;
-            this.x2 = x2;
-            this.y2 = y2;
-        }
-
-        @Override
-        public void perform(Path path) {
-            path.quadTo(x1, y1, x2, y2);
-        }
     }
 }

app/src/main/java/com/simplemobiletools/draw/Svg.java

@@ -0,0 +1,69 @@
+package com.simplemobiletools.draw;
+
+import android.graphics.drawable.ColorDrawable;
+
+import com.simplemobiletools.draw.actions.Action;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.util.Map;
+
+public class Svg {
+
+    public static void saveSvg(File output, MyCanvas canvas)
+            throws Exception {
+        // This might throw ClassCastException
+        int backgroundColor = ((ColorDrawable) canvas.getBackground()).getColor();
+
+        // This might throw IOException
+        FileOutputStream out = new FileOutputStream(output);
+        BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out));
+        writeSvg(writer, backgroundColor, canvas.getPaths(), canvas.getWidth(), canvas.getHeight());
+        writer.close();
+    }
+
+    private static void writeSvg(Writer writer, int backgroundColor,
+                                 Map<MyPath, PaintOptions> paths, int width, int height)
+            throws IOException {
+        writer.write("<svg width=\"");
+        writer.write(String.valueOf(width));
+        writer.write("\" height=\"");
+        writer.write(String.valueOf(height));
+        writer.write("\" xmlns=\"http://www.w3.org/2000/svg\">");
+
+        // Background color (use a rect)
+        writer.write("<rect width=\"");
+        writer.write(String.valueOf(width));
+        writer.write("\" height=\"");
+        writer.write(String.valueOf(height));
+        writer.write("\" fill=\"#");
+        writer.write(Integer.toHexString(backgroundColor).substring(2)); // Skip the alpha FF
+        writer.write("\"/>");
+
+        // Write the paths
+        for (Map.Entry<MyPath, PaintOptions> entry : paths.entrySet()) {
+            writePath(writer, entry.getKey(), entry.getValue());
+        }
+        writer.write("</svg>");
+    }
+
+    private static void writePath(Writer writer, MyPath path, PaintOptions options)
+            throws IOException {
+
+        writer.write("<path d=\"");
+        for (Action action : path.getActions()) {
+            action.perform(writer);
+            writer.write(' ');
+        }
+
+        writer.write("\" fill=\"none\" stroke=\"#");
+        writer.write(Integer.toHexString(options.color).substring(2)); // Skip the alpha FF
+        writer.write("\" stroke-width=\"");
+        writer.write(String.valueOf(options.strokeWidth));
+        writer.write("\" stroke-linecap=\"round\"/>");
+    }
+}

app/src/main/java/com/simplemobiletools/draw/actions/Action.java

@@ -0,0 +1,12 @@
+package com.simplemobiletools.draw.actions;
+
+import android.graphics.Path;
+
+import java.io.IOException;
+import java.io.Serializable;
+import java.io.Writer;
+
+public interface Action extends Serializable {
+    void perform(Path path);
+    void perform(Writer writer) throws IOException;
+}

app/src/main/java/com/simplemobiletools/draw/actions/Line.java

@@ -0,0 +1,29 @@
+package com.simplemobiletools.draw.actions;
+
+import android.graphics.Path;
+
+import java.io.IOException;
+import java.io.Writer;
+
+public final class Line implements Action {
+
+    private final float x, y;
+
+    public Line(float x, float y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    @Override
+    public void perform(Path path) {
+        path.lineTo(x, y);
+    }
+
+    @Override
+    public void perform(Writer writer) throws IOException {
+        writer.write("L");
+        writer.write(String.valueOf(x));
+        writer.write(",");
+        writer.write(String.valueOf(y));
+    }
+}

app/src/main/java/com/simplemobiletools/draw/actions/Move.java

@@ -0,0 +1,30 @@
+package com.simplemobiletools.draw.actions;
+
+
+import android.graphics.Path;
+
+import java.io.IOException;
+import java.io.Writer;
+
+public final class Move implements Action {
+
+    private final float x, y;
+
+    public Move(float x, float y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    @Override
+    public void perform(Path path) {
+        path.moveTo(x, y);
+    }
+
+    @Override
+    public void perform(Writer writer) throws IOException {
+        writer.write('M');
+        writer.write(String.valueOf(x));
+        writer.write(',');
+        writer.write(String.valueOf(y));
+    }
+}

app/src/main/java/com/simplemobiletools/draw/actions/Quad.java

@@ -0,0 +1,35 @@
+package com.simplemobiletools.draw.actions;
+
+import android.graphics.Path;
+
+import java.io.IOException;
+import java.io.Writer;
+
+public final class Quad implements Action {
+
+    private final float x1, y1, x2, y2;
+
+    public Quad(float x1, float y1, float x2, float y2) {
+        this.x1 = x1;
+        this.y1 = y1;
+        this.x2 = x2;
+        this.y2 = y2;
+    }
+
+    @Override
+    public void perform(Path path) {
+        path.quadTo(x1, y1, x2, y2);
+    }
+
+    @Override
+    public void perform(Writer writer) throws IOException {
+        writer.write('Q');
+        writer.write(String.valueOf(x1));
+        writer.write(',');
+        writer.write(String.valueOf(y1));
+        writer.write(' ');
+        writer.write(String.valueOf(x2));
+        writer.write(',');
+        writer.write(String.valueOf(y2));
+    }
+}

app/src/main/java/com/simplemobiletools/draw/activities/MainActivity.java

@@ -19,12 +19,14 @@ import android.view.MenuItem;
 import android.view.View;
 import android.widget.EditText;
 import android.widget.ImageView;
+import android.widget.RadioGroup;
 import android.widget.SeekBar;
 import android.widget.Toast;
 
 import com.simplemobiletools.draw.Config;
 import com.simplemobiletools.draw.MyCanvas;
 import com.simplemobiletools.draw.R;
+import com.simplemobiletools.draw.Svg;
 import com.simplemobiletools.draw.Utils;
 
 import java.io.ByteArrayOutputStream;
@@ -50,6 +52,7 @@ public class MainActivity extends SimpleActivity implements MyCanvas.PathsChange
     @BindView(R.id.stroke_width_bar) SeekBar mStrokeWidthBar;
 
     private String curFileName;
+    private int curExtensionId;
 
     private int color;
     private float strokeWidth;
@@ -163,6 +166,11 @@ public class MainActivity extends SimpleActivity implements MyCanvas.PathsChange
 
         final EditText fileNameET = (EditText) saveFileView.findViewById(R.id.file_name);
         fileNameET.setText(curFileName);
+
+        final RadioGroup fileExtensionRG = (RadioGroup) saveFileView.findViewById(R.id.extension_radio_group);
+        if (curExtensionId != 0) {
+            fileExtensionRG.check(curExtensionId);
+        }
         builder.setView(saveFileView);
 
         builder.setPositiveButton(R.string.ok, null);
@@ -174,10 +182,18 @@ public class MainActivity extends SimpleActivity implements MyCanvas.PathsChange
             @Override
             public void onClick(View v) {
                 final String fileName = fileNameET.getText().toString().trim();
-
                 if (!fileName.isEmpty()) {
-                    if (saveFile(fileName + ".png")) {
+                    final String extension;
+                    switch (fileExtensionRG.getCheckedRadioButtonId()) {
+                        default:
+                        case R.id.extension_radio_png: extension = ".png"; break;
+                        case R.id.extension_radio_svg: extension = ".svg"; break;
+                    }
+
+                    if (saveFile(fileName, extension)) {
                         curFileName = fileName;
+                        curExtensionId = fileExtensionRG.getCheckedRadioButtonId();
+
                         Utils.showToast(getApplicationContext(), R.string.saving_ok);
                         alertDialog.dismiss();
                     } else {
@@ -190,7 +206,7 @@ public class MainActivity extends SimpleActivity implements MyCanvas.PathsChange
         });
     }
 
-    private boolean saveFile(final String fileName) {
+    private boolean saveFile(final String fileName, final String extension) {
         final String path = Environment.getExternalStorageDirectory().toString();
         final File directory = new File(path, SAVE_FOLDER_NAME);
         if (!directory.exists()) {
@@ -199,24 +215,41 @@ public class MainActivity extends SimpleActivity implements MyCanvas.PathsChange
             }
         }
 
-        final Bitmap bitmap = mMyCanvas.getBitmap();
+        final File file = new File(directory, fileName+extension);
-        FileOutputStream out = null;
+        switch (extension) {
-        try {
+            case ".png":
-            final File file = new File(directory, fileName);
+                final Bitmap bitmap = mMyCanvas.getBitmap();
-            out = new FileOutputStream(file);
+                FileOutputStream out = null;
-            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
+                try {
-            MediaScannerConnection.scanFile(getApplicationContext(), new String[]{file.getAbsolutePath()}, null, null);
+                    out = new FileOutputStream(file);
-        } catch (Exception e) {
+                    bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
-            Log.e(TAG, "MainActivity SaveFile " + e.getMessage());
+                    MediaScannerConnection.scanFile(getApplicationContext(),
-            return false;
+                            new String[]{file.getAbsolutePath()}, null, null);
-        } finally {
+                } catch (Exception e) {
-            try {
+                    Log.e(TAG, "MainActivity SaveFile (.png) " + e.getMessage());
-                if (out != null) {
+                    return false;
-                    out.close();
+                } finally {
+                    try {
+                        if (out != null) {
+                            out.close();
+                        }
+                    } catch (IOException e) {
+                        Log.e(TAG, "MainActivity SaveFile (.png) 2 " + e.getMessage());
+                    }
                 }
-            } catch (IOException e) {
+                break;
-                Log.e(TAG, "MainActivity SaveFile 2 " + e.getMessage());
+
-            }
+            case ".svg":
+                try {
+                    Svg.saveSvg(file, mMyCanvas);
+                } catch (Exception e) {
+                    Log.e(TAG, "MainActivity SaveFile (.svg) " + e.getMessage());
+                    return false;
+                }
+                break;
+
+            default:
+                return false;
         }
 
         return true;

app/src/main/res/layout/save_file.xml

@@ -17,18 +17,26 @@
         android:layout_height="wrap_content"
         android:layout_below="@+id/file_name_label"
         android:layout_marginBottom="@dimen/activity_margin"
-        android:layout_toLeftOf="@+id/file_extension"
         android:singleLine="true"/>
 
-    <TextView
+    <RadioGroup
-        android:id="@+id/file_extension"
+        android:id="@+id/extension_radio_group"
-        android:layout_width="wrap_content"
+        android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
-        android:layout_alignBottom="@+id/file_name"
+        android:layout_below="@+id/file_name"
-        android:layout_alignParentRight="true"
+        android:checkedButton="@+id/extension_radio_png">
-        android:layout_alignTop="@+id/file_name"
+
-        android:layout_below="@+id/file_name_label"
+        <RadioButton
-        android:gravity="center_vertical"
+            android:id="@+id/extension_radio_png"
-        android:text=".png"/>
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text=".png"/>
+
+        <RadioButton
+            android:id="@+id/extension_radio_svg"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text=".svg"/>
+    </RadioGroup>
 
 </RelativeLayout>