Android Open Source - minecraft-connect-4 Layout Manager

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License

The source code is released under:
MIT License
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Java Source Code

/* COPYRIGHT (C) 2014 Aleksandr Belkin. All Rights Reserved. */
package sq.squ1rr.mcc4.layout;
/*  w  w  w . j  ava2s.  c  om*/
import sq.squ1rr.mcc4.MenuLayout;
import sq.squ1rr.mcc4.R;
import sq.squ1rr.mcc4.util.GlobalConstants;
import android.app.Activity;
import android.graphics.Shader.TileMode;
import android.graphics.drawable.BitmapDrawable;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.ScrollView;

/**
 * Layout manager manages the current activity layout.
 * @author Aleksandr Belkin
 */
public class LayoutManager {
    /** tag for debugging */
    private final static String TAG = LayoutManager.class.getName();
    
    /**
     * Theme names
     */
    public enum Theme {
        MAIN, DIRT;
    }
    
    /**
     * Layout parts
     */
    public enum LayoutPart {
        HEADER, CONTENT, FOOTER;
    }

    /** parents activity */
    private Activity activity;
    
    /** page layout */
    private LinearLayout page = null;
    
    /** header layout */
    private McGroup header = null;
    
    /** footer layout */
    private McGroup footer = null;
    
    /** menu layout */
    private McGroup menuContainer = null;
    
    /** current theme */
    private Theme theme = null;
    
    /** current layout */
    private MenuLayout layout = null;
    
    /**
     * Create layout manager, does nothing besides
     * @param _activity
     */
    public LayoutManager(Activity _activity) {
        activity = _activity;
    }
    
    /**
     * Returns parent activity
     * @return activity
     */
    public Activity getActivity() {
        return activity;
    }
    
    /**
     * Sets new layout, doesn't update the theme layout if possible
     * @param layout
     */
    public void setLayout(MenuLayout _layout) {
        layout = _layout;
        if(theme != layout.getTheme()) {
            build(layout.getTheme());
        }
        menuContainer.removeAllViews();
        layout.build(this);
    }
    
    /**
     * Refresh layout
     */
    public void refresh() {
        if(header != null) header.removeAllViews();
        if(footer != null) footer.removeAllViews();
        menuContainer.removeAllViews();
        layout.build(this);
    }
    
    /**
     * Create a theme layout based on theme chosen
     * @param _theme
     */
    private void build(Theme _theme) {
        theme = _theme;
        
        if(page == null) {
            ScrollView scrollView = new ScrollView(activity);
            scrollView.setFillViewport(true);
            page = new LinearLayout(activity);
            page.setLayoutParams(new LayoutParams(
                LayoutParams.MATCH_PARENT,
                LayoutParams.MATCH_PARENT
            ));
            scrollView.addView(page);
            activity.setContentView(scrollView);
        } else {
            page.removeAllViews();
        }
        
        switch(theme) {
        case MAIN: buildMainTheme(); break;
        case DIRT: buildDirtTheme(); break;
        default: 
            if(GlobalConstants.DEBUG) Log.wtf(TAG, "Unknown Layout Theme");
            throw new RuntimeException("Unknown Layout Theme");
        }
    }
    
    /**
     * Create main theme layout with banner and simple menu.
     * No header or footer.
     */
    private void buildMainTheme() {
        // null header and footer
        header = footer = null;
        
        // dimensions
        int padding = McStyle.getMenuPadding(activity);
        int paddingTop = McStyle.getMenuBannerSpacing(activity);
        
        // build layout
        page.setBackgroundResource(R.drawable.menu_background);
            page.setOrientation(LinearLayout.VERTICAL);
            page.setPadding(0, padding, 0, 0);
        
        // banner
        ImageView banner = new ImageView(activity);
            banner.setImageResource(R.drawable.banner);
            page.addView(banner);
        
        // menu area
        menuContainer = new McGroup(activity);
            menuContainer.setChildParams(
                    LayoutParams.MATCH_PARENT,
                    LayoutParams.WRAP_CONTENT
            );
            menuContainer.setOrientation(LinearLayout.VERTICAL);
            menuContainer.setPadding(padding, paddingTop, padding, padding);
        page.addView(menuContainer);
    }
    
    /**
     * Create main theme layout with banner and simple menu.
     * No header or footer.
     */
    private void buildDirtTheme() {
        // dimensions
        int padding = McStyle.getMenuPadding(activity);
        
        // build layout        
        page.setBackgroundResource(R.drawable.minecraft_dirt_dark);
        page.setOrientation(LinearLayout.VERTICAL);
        
        BitmapDrawable background = (BitmapDrawable)page.getBackground();
            background.setTileModeXY(TileMode.REPEAT, TileMode.REPEAT);
        
        // header
        header = new McGroup(activity);
            header.setChildParams(
                    LayoutParams.MATCH_PARENT,
                    LayoutParams.WRAP_CONTENT
            );
            header.setOrientation(LinearLayout.VERTICAL);
            header.setPadding(padding, padding, padding, padding);
            page.addView(header);
        
        // menu wrapper weight adjustment
        LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
            LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1f
        );
        
        // menu wrapper
        LinearLayout content = new LinearLayout(activity);
            content.setOrientation(LinearLayout.VERTICAL);
            content.setBackgroundColor(0x80000000);
            content.setLayoutParams(layoutParams);
            page.addView(content);
        
        // menu area 
        menuContainer = new McGroup(activity);
            menuContainer.setChildParams(
                    LayoutParams.MATCH_PARENT,
                    LayoutParams.WRAP_CONTENT
            );
            menuContainer.setOrientation(LinearLayout.VERTICAL);
            menuContainer.setLayoutParams(layoutParams);
            menuContainer.setPadding(padding, 0, padding, 0);
        
        // gradient size
        layoutParams = new LinearLayout.LayoutParams(
            LayoutParams.MATCH_PARENT, padding
        );
        
        // menu wrapper top gradient
        ImageView gradient = new ImageView(activity);
            gradient.setImageResource(R.drawable.dark_content_top);
            gradient.setLayoutParams(layoutParams);
            content.addView(gradient);
        
        // add menu container in between the gradients
        content.addView(menuContainer);
        
        // menu wrapper bottom gradient
        gradient = new ImageView(activity);
            gradient.setImageResource(R.drawable.dark_content_bottom);
            gradient.setLayoutParams(layoutParams);
            content.addView(gradient);
        
        // footer
        footer = new McGroup(activity);
            footer.setChildParams(
                    LayoutParams.MATCH_PARENT,
                    LayoutParams.WRAP_CONTENT
            );
            footer.setOrientation(LinearLayout.VERTICAL);
            footer.setPadding(padding, padding, padding, padding);
            page.addView(footer);
    }
    
    /**
     * Add a view to menu layout (not header and not footer)
     * @param view
     */
    public void add(View view) {
        add(view, menuContainer);
    }
    
    /**
     * Add a view to menu layout part
     * @param view
     * @param part
     */
    public void add(View view, LayoutPart part) {
        switch(part) {
        case HEADER:    add(view, header); break;
        case CONTENT:    add(view, menuContainer); break;
        case FOOTER:    add(view, footer); break;
        }
    }
    
    /**
     * Internal function to add view to a layout part
     * @param view
     * @param where
     */
    private void add(View view, McGroup where) {
        where.addView(view);
    }
    
    /**
     * Adds a divider of a certain height
     * @param height in px
     */
    public void addDivider(int height) {
        View view = new View(activity);
        menuContainer.addView(view);

        // set divider height
        LayoutParams params = new LayoutParams(
            view.getLayoutParams()
        );
        params.height = height;
        view.setLayoutParams(params);
    }
}
Java Source Code List
