qgridlayouttranslator.java

A translator that converts Qt Designer UI files into SWT java classes. Use the power of Qt Designer

/* This file is part of ui2swt.
 *
 * $Revision: 1.4 $
 * $Date: 2007/01/14 10:35:38 $
 * $Name:  $
 *
 * Copyright (C) 2006-2007 James Forbes, All Rights Reserved.
 *
 * This software is provided 'as-is', without any express or implied warranty.
 * In no event will the authors be held liable for any damages arising from the
 * use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 *  1. The origin of this software must not be misrepresented; you must not
 *     claim that you wrote the original software. If you use this software in
 *     a product, an acknowledgment in the product documentation would be
 *     appreciated but is not required.
 *
 *  2. Altered source versions must be plainly marked as such, and must not be
 *     misrepresented as being the original software.
 *
 *  3. This notice may not be removed or altered from any source distribution.
 */

package ui2swt.swt;

import java.util.Comparator;
import java.util.SortedSet;
import java.util.TreeSet;

import ui2swt.ClassDefinition;
import ui2swt.Layout;
import ui2swt.UIDefinition;
import ui2swt.Widget;



public class QGridLayoutTranslator extends AbstractLayoutTranslator
{
    private static final String UI_GRID_LAYOUT_ROW      = "row";
    private static final String UI_GRID_LAYOUT_COLUMN   = "column";


    //
    //
    //
    
    public QGridLayoutTranslator()
    {
        super();
    }

    
    protected void setProperties(
        UIDefinition    iUIDefinition,
        Layout          iLayout,
        Widget          iWidget )
    {
        SWTGridLayoutHelper.setProperties(iUIDefinition, iLayout);
    }

    
    protected void generateConstructCode(
        UIDefinition    iUIDefinition,
        Layout          iLayout,
        Widget          iWidget,
        ClassDefinition iClassDefinition )
    {
        SWTLayoutHelper.generateConstructCode(
            iUIDefinition,
            iLayout,
            iWidget,
            iClassDefinition);
    }
    
    
    protected void generateSetFieldsCode(
        UIDefinition    iUIDefinition,
        Layout          iLayout,
        Widget          iWidget,
        ClassDefinition iClassDefinition )
    {
        SWTGridLayoutHelper.generateFieldsCode(
            iUIDefinition,
            iLayout,
            iClassDefinition);
    }
    
    
    protected void prepareChildren(
        UIDefinition    iUIDefinition,
        Layout          iLayout,
        Widget          iWidget,
        Widget[]        iChildren,
        ClassDefinition iClassDefinition )
    {
        //
        // Set the row and column properties of the children.
        // Sort the children by their row and column property.
        // Set the number of rows and column properties of the layout.
        //
        int numRows     = 1;
        int numColumns  = 1;
        
        SortedSet sortedChildren = new TreeSet(new RowColumnComparator());

        for ( int i = 0; i < iChildren.length; i++ )
        {
            Widget  child   = iChildren[i];
            int     row     = child.getIntProperty(UI_GRID_LAYOUT_ROW, 0);
            int     column  = child.getIntProperty(UI_GRID_LAYOUT_COLUMN, 0);

            child.setIntProperty(SWTGridLayoutHelper.SWT_ROW,    row);
            child.setIntProperty(SWTGridLayoutHelper.SWT_COLUMN, column);
            
            sortedChildren.add(iChildren[i]);
            
            if ( row >= numRows )
            {
                numRows = row + 1;
            }
            
            if ( column >= numColumns )
            {
                numColumns = column + 1;
            }
        }

        iLayout.setIntProperty(SWTGridLayoutHelper.SWT_NUM_ROWS, numRows);
        iLayout.setIntProperty(SWTGridLayoutHelper.SWT_NUM_COLUMNS, numColumns);
        
        System.arraycopy(sortedChildren.toArray(), 0, iChildren, 0, iChildren.length);
    }
    
    
    protected void layoutChildren(
        UIDefinition    iUIDefinition,
        Layout          iLayout,
        Widget          iWidget,
        Widget[]        iChildren,
        ClassDefinition iClassDefinition )
    {
        SWTGridLayoutHelper.generateChildrenLayoutData(
            iUIDefinition,
            iLayout,
            iWidget,
            iChildren,
            iClassDefinition);
    }

    
    //
    //
    //
    
    private class RowColumnComparator implements Comparator
    {
        public int compare( Object iArg1, Object iArg2 )
        {
            Widget widget1 = (Widget)(iArg1);
            Widget widget2 = (Widget)(iArg2);
            int    row1    = widget1.getIntProperty(SWTGridLayoutHelper.SWT_ROW, 0);
            int    row2    = widget2.getIntProperty(SWTGridLayoutHelper.SWT_ROW, 0);
            
            if ( row1 < row2 )
            {
                return -1;
            }
            else if ( row1 > row2 )
            {
                return 1;
            }
            else
            {
                int column1 = widget1.getIntProperty(SWTGridLayoutHelper.SWT_COLUMN, 0);
                int column2 = widget2.getIntProperty(SWTGridLayoutHelper.SWT_COLUMN, 0);
                
                if ( column1 < column2 )
                {
                    return -1;
                }
                else if ( column1 > column2 )
                {
                    return 1;
                }
                else
                {
                    return 0;
                }
            }
        }
    }
}