uk.digitalsquid.droidpad.layout.JsonDecoder.java Source code

Introduction

Here is the source code for uk.digitalsquid.droidpad.layout.JsonDecoder.java

Source

/*  This file is part of DroidPad.
 *
 *  DroidPad is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  DroidPad is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with DroidPad.  If not, see <http://www.gnu.org/licenses/>.
 */

package uk.digitalsquid.droidpad.layout;

import java.io.IOException;
import java.io.Reader;
import java.util.Locale;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import uk.digitalsquid.droidpad.LogTag;
import uk.digitalsquid.droidpad.buttons.Button;
import uk.digitalsquid.droidpad.buttons.Item;
import uk.digitalsquid.droidpad.buttons.Layout;
import uk.digitalsquid.droidpad.buttons.ModeSpec;
import uk.digitalsquid.droidpad.buttons.Orientation;
import uk.digitalsquid.droidpad.buttons.Slider;
import uk.digitalsquid.droidpad.buttons.ToggleButton;
import uk.digitalsquid.droidpad.buttons.TouchPanel;

public class JsonDecoder implements LogTag {

    public static final ModeSpec decodeLayout(Reader reader) throws IOException {
        StringBuffer contents = new StringBuffer();
        char[] buf = new char[1024];
        int read = -1;
        while ((read = reader.read(buf)) != -1) {
            contents.append(buf, 0, read);
        }
        try {
            return decodeLayout(contents.toString());
        } catch (JSONException e) {
            IOException e1 = new IOException("Failed to parse JSON string from reader");
            e1.initCause(e);
            throw e1;
        }
    }

    public static final ModeSpec decodeLayout(String input) throws JSONException {
        JSONObject root = new JSONObject(input);
        ModeSpec result = new ModeSpec();

        result.setMode(getModeId(root.optString("mode")));

        String title = root.optString("name", "Custom Layout");
        String description = root.optString("description", "A new custom layout");
        int gridX = root.optInt("gridX", 4);
        int gridY = root.optInt("gridY", 5);
        // Editor size used to work out orientation
        int editorWidth = root.optInt("width", 720);
        int editorHeight = root.optInt("height", 405);
        boolean horizontal = editorWidth > editorHeight;
        Layout layout = new Layout(title, description, gridX, gridY);
        layout.setActivityHorizontal(horizontal);
        result.setLayout(layout);

        JSONArray items = root.getJSONArray("items");
        for (int i = 0; i < items.length(); i++) {
            JSONObject item = items.getJSONObject(i);
            String type = item.optString("type", "button");
            boolean gridSnap = item.optBoolean("gridSnap", true);
            // These values are integers if grid snapping, floats if not
            float x = (float) item.optDouble("x", 0);
            float y = (float) item.optDouble("y", 0);
            float width = (float) item.optDouble("width", 1);
            float height = (float) item.optDouble("height", 1);
            int textSize = item.optInt("textSize", 20);
            String text = item.optString("text");
            if (text.equals(""))
                text = String.format(Locale.getDefault(), "%d", i + 1);

            Orientation orientation = Orientation.Both;
            String orientationType = item.optString("orientation", "both");
            if (orientationType.equals("both"))
                orientation = Orientation.Both;
            if (orientationType.equals("x"))
                orientation = Orientation.X;
            if (orientationType.equals("y"))
                orientation = Orientation.Y;

            Item component = null;
            if (type.equals("button")) {
                component = new Button(x, y, width, height, !gridSnap, text, textSize);
            } else if (type.equals("toggle")) {
                component = new ToggleButton(x, y, width, height, !gridSnap, text, textSize);
            } else if (type.equals("slider")) {
                component = new Slider(x, y, width, height, !gridSnap, orientation);
            } else if (type.equals("panel")) {
                component = new TouchPanel(x, y, width, height, !gridSnap, orientation);
            }
            if (component != null)
                layout.add(component);
        }

        return result;
    }

    static final int getModeId(String mode) {
        // TODO: check these against editor
        if (mode.equalsIgnoreCase("joystick"))
            return ModeSpec.LAYOUTS_JS;
        if (mode.equalsIgnoreCase("mouse"))
            return ModeSpec.LAYOUTS_MOUSE;
        if (mode.equalsIgnoreCase("touch"))
            return ModeSpec.LAYOUTS_MOUSE_ABS;
        if (mode.equalsIgnoreCase("slideshow"))
            return ModeSpec.LAYOUTS_SLIDE;
        return ModeSpec.LAYOUTS_JS;
    }
}