guielementcache.java

基于java的3d开发库。对坐java3d的朋友有很大的帮助。

package vsdk.transition.gui;

public abstract class GuiElementCache
{
    protected GuiCache context;

    public abstract String toString();
    public abstract String toString(int level);

    private int fromHex(char c)
    {
        int i = -1;

        switch ( c ) {
            case '0': i = 0; break;
            case '1': i = 1; break;
            case '2': i = 2; break;
            case '3': i = 3; break;
            case '4': i = 4; break;
            case '5': i = 5; break;
            case '6': i = 6; break;
            case '7': i = 7; break;
            case '8': i = 8; break;
            case '9': i = 9; break;
            case 'a': case 'A': i = 10; break;
            case 'b': case 'B': i = 11; break;
            case 'c': case 'C': i = 12; break;
            case 'd': case 'D': i = 13; break;
            case 'e': case 'E': i = 14; break;
            case 'f': case 'F': i = 15; break;
        }
        return i;
    }

    /**
    Given a Windows32 SDK API / Aquynza style coded name, this method
    generates the simplified name, separating from it its mnemonic and
    accelerator if any.

    For example, if codedName has the value "&Open\tCtrl+O", the
    simplified name will be "Open", the mnemonic will be 'O' and the
    accelerator will be "Ctrl+O". This method return its simplified name.
    */
    protected String processSimplifiedName(String codedName)
    {
        if ( codedName == null ) return null;

        String simplifiedName = "";

        int i;
        char c;

        for ( i = 0; i < codedName.length(); i++ ) {
            c = codedName.charAt(i);
            if ( c == '&' ) continue;

            if ( c == '\t' ) {
                break;
            }

            if ( c == '#' ) {
                // Process UNICODE escape sequences...
                int start = i;
                i++;
                int num1=0, num2=0, num3=0, num4=0, num;
                for ( ; i < codedName.length(); i++ ) {
                    c = codedName.charAt(i);
                    if ( c == '#' ) {
                        simplifiedName = simplifiedName + c;
                        break;
                    }
                    num = fromHex(c);
                    if ( num < 0 ) {
                        break;
                    }
                    if ( i == start+1 ) { 
                        num1 = num;
                    }
                    else if ( i == start+2 ) {
                        num2 = num;
                    }
                    else if ( i == start+3 ) {
                        num3 = num;
                    }
                    else if ( i == start+4 ) {
                        num4 = num;
                        c = (char)(num1 << 12 | num2 << 8 | num3 << 4 | num4);
                        simplifiedName = simplifiedName + c;
                        break;
                    }
                }
            }
            else {
                simplifiedName = simplifiedName + c;
            }
        }

        return simplifiedName;
    }

    /**
    Given a Windows32 SDK API / Aquynza style coded name, this method
    generates the simplified name, separating from it its mnemonic and
    accelerator if any.

    For example, if codedName has the value "&Open\tCtrl+O", the
    simplified name will be "Open", the mnemonic will be 'O' and the
    accelerator will be "Ctrl+O". This method return its mnemonic.
    */
    protected char processMnemonic(String codedName)
    {
        if ( codedName == null ) return '\0';

        String simplifiedName = "";

        int i;
        char c;

        for ( i = 0; i < codedName.length()-1; i++ ) {
            c = codedName.charAt(i);
            if ( c == '&' ) {
                i++;
                c = codedName.charAt(i);
                return c;
            }
            simplifiedName = simplifiedName + c;
        }

        return '\0';
    }

    /**
    Given a Windows32 SDK API / Aquynza style coded name, this method
    generates the simplified name, separating from it its mnemonic and
    accelerator if any.

    For example, if codedName has the value "&Open\tCtrl+O", the
    simplified name will be "Open", the mnemonic will be 'O' and the
    accelerator will be "Ctrl+O". This method return its accelerator,
    or null if it is no accelerator.
    */
    protected String processAccelerator(String codedName)
    {
        if ( codedName == null ) return null;

        String accelerator = "";

        int i;
        char c;

        for ( i = 0; i < codedName.length(); i++ ) {
            c = codedName.charAt(i);
            if ( c == '\t' ) break;
        }

        for ( i++ ;i < codedName.length(); i++ ) {
            c = codedName.charAt(i);
            accelerator = accelerator + c;
        }

        if ( accelerator.length() <= 0 ) return null;

        return accelerator;
    }
}