textviewer.java

编辑视频文件

    /**
     * Returns whether the annotation values are visualized separated by a dot.
     *
     * @return true if the annotation values are visualized separated by a dot,
     * false otherwise
     */
    public boolean isDotSeparated() {
        return bVisDotted;
    }

    /**
     * Sets the visualization of the annotation values.
     *
     * @param dotted when true the annotations are separated by dots
     */
    public void setDotSeparated(boolean dotted) {
        if (dotted != bVisDotted) {
            bVisDotted = dotted;
            setTier(getTier());
        }
    }

    /**
     * Sets whether the crosshair should be centered vertically in
     * the view. When this value is <code>false</code> the crosshair
     * will most of the time be drawn at he bottom of the view.
      *
     * @param centered the center vertically value
     */
    public void setCenteredVertically(boolean centered) {
        centerVertically = centered;

        if (centerMI.isSelected() != centerVertically) {
            centerMI.setSelected(centerVertically);
        }

        scrollIfNeeded();
        repaint();
    }

    /**
     * Returns whether the crosshair is vertically centered .
     *
     * @return the center vertically value
     */
    public boolean isCenteredVertically() {
        return centerVertically;
    }

    /**
     * Builds an array with all begintimes and endtimes from a tag Used for
     * searching (quickly) a particular tag
     */
    private void buildArrayAndText() {
        tierText = "";

        int annotations_size = annotations.size();
        arrTagTimes = new long[2 * annotations_size];
        arrTagPositions = new int[2 * annotations_size];

        int arrIndexTimes = 0;
        int arrIndexPositions = 0;

        try {
            Annotation ann;

            for (int i = 0; i < annotations_size; i++) {
                ann = (Annotation) annotations.elementAt(i);

                String strTagValue = ann.getValue();

                //next line for JDK1.4 only
                //strTagValue = strTagValue.replaceAll("\n", "");
                strTagValue = strTagValue.replace('\n', ' ');

                //building text
                if (bVisDotted) {
                    tierText += (strTagValue +
                    "\u0020\u0020\u00B7\u0020\u0020");
                    extraLength = 4;
                } else {
                    tierText += (strTagValue + " ");
                    extraLength = 0;
                }

                begintime = ann.getBeginTimeBoundary();
                endtime = ann.getEndTimeBoundary();

                arrTagTimes[arrIndexTimes++] = begintime;
                arrTagTimes[arrIndexTimes++] = endtime;

                int taglength = ((String) (strTagValue)).length() +
                    extraLength;

                if ((arrIndexPositions == 0) || (arrIndexPositions == 1)) {
                    arrTagPositions[arrIndexPositions++] = 0;
                    arrTagPositions[arrIndexPositions++] = taglength;
                } else {
                    arrTagPositions[arrIndexPositions] = arrTagPositions[arrIndexPositions -
                        1] + 1; // 1 space
                    arrIndexPositions++;
                    arrTagPositions[arrIndexPositions] = arrTagPositions[arrIndexPositions -
                        1] + taglength;
                    arrIndexPositions++;
                }
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }

        //used for testing purposes
        //for (int tel=0; tel < arrTagTimes.length; tel++)
        //{
        //    System.out.println("arrTagTimes[" + tel + "]: " + arrTagTimes[tel] + " --- " + "arrTagPositions[" + tel + "]: " + arrTagPositions[tel]);
        //}
    }

    /**
     * Handles mouse actions on the text viewer
     */
    private class TextViewerMouseListener extends MouseAdapter {
        private InlineEditBox inlineEditBox = null;
        private JComponent comp;

        /**
         * Creates a new TextViewerMouseListener instance
         *
         * @param c the parent component
         */
        public TextViewerMouseListener(JComponent c) {
            comp = c;
        }

        /**
         * DOCUMENT ME!
         *
         * @param e DOCUMENT ME!
         */
        public void mousePressed(MouseEvent e) {
            stopPlayer();

            if (SwingUtilities.isRightMouseButton(e) || e.isPopupTrigger()) {
                Point p = e.getPoint();
                SwingUtilities.convertPointToScreen(p, comp);

                int x = e.getPoint().x;
                int y = e.getPoint().y;

                popup.show(comp, x, y);
            }
        }

        /**
         * Finds the index of the active annotation in the array of tags.
         *
         * @return the index
         */
        private int getArrayIndex() {
            int index = -1;

            int annotations_size = annotations.size();

            for (int i = 0; i < annotations_size; i++) {
                Annotation ann = (Annotation) annotations.elementAt(i);

                // 4 dec 2003: there isn't always a selection to rely on
                //exact time always exists in this case

                /*
                if (getSelectionBeginTime() == tag.getBeginTime()) {
                    index = i;

                    break;
                }

                // temp: use the active annotation
                else */

                // HS jul 2004 only use the active annotation to find the particular index
                if ((getActiveAnnotation() != null) &&
                        (getActiveAnnotation().getBeginTimeBoundary() == ann.getBeginTimeBoundary())) {
                    index = i;

                    break;
                }
            }

            return index;
        }

        /**
         * DOCUMENT ME!
         *
         * @param e DOCUMENT ME!
         */
        public void mouseReleased(MouseEvent e) {
            if (SwingUtilities.isRightMouseButton(e) || e.isPopupTrigger()) {
                return;
            }

            int annotations_size = annotations.size();

            //bring up edit dialog
            if (e.getClickCount() == 2) {
                if (inlineEditBox == null) {
                    inlineEditBox = new InlineEditBox(false);
                    inlineEditBox.setLocale(ElanLocale.getLocale());
                }

                Annotation annotation = null;
                int index = getArrayIndex();

                if ((index >= 0) && (index < annotations_size)) {
                    annotation = (Annotation) annotations.elementAt(index);

                    if (e.isShiftDown()) {
                        // open CV
                        inlineEditBox.setAnnotation(annotation, true);
                    } else {
                        inlineEditBox.setAnnotation(annotation);
                    }

                    inlineEditBox.detachEditor();
                }

                return;
            }

            //setting selection color to background because of strange behaviour from JTextArea
            //JTextArea's own selection system gets in the way with our selection.
            //For example, a fast three-click will select a complete line.
            //A workaround: set the selection color to the background color.
            //So the JTextArea still shows its own selection , you just don't see it.
            //One problem left: making a selection in the JTextArea by dragging a mouse.
            //You can't see your selection while you're making it because of the color.
            //To avoid this the selection color of the JTextArea is set to our
            //selection color in the mouseDragged method of TextViewerMouseMotionListener.
            //And here is the place to set it back again.
            //taText.setSelectionColor(taText.getBackground());
            taText.setSelectionColor(transparent);

            if (!taText.getText().equals("")) {
                int selectionStartPosition = taText.getSelectionStart();
                int selectionEndPosition = taText.getSelectionEnd();

                int indexSelectionStart = 0;
                int indexSelectionEnd = 0;
                int indexj = 0;

                //index from selection begin
                int index = Math.abs(Arrays.binarySearch(arrTagPositions,
                            selectionStartPosition));

                for (int j = -2; j <= 2; j++) {
                    indexj = index + j;

                    if ((indexj >= 0) && (indexj < arrTagPositions.length)) {
                        if (arrTagPositions[indexj] <= selectionStartPosition) {
                            indexSelectionStart = indexj;
                        }
                    }
                }

                //if clicked
                if ((selectionStartPosition == selectionEndPosition) &&
                        ((indexSelectionStart + 1) < arrTagTimes.length)) {
                    //don't change order of setting things!
                    // HS 4 dec 2003: changed in order to use application wide implementation of
                    // setActiveAnnotation (i.e. don't set the selection when a RefAnnotation is made active)
                    //setSelection(arrTagTimes[indexSelectionStart], arrTagTimes[indexSelectionStart + 1]);
                    index = (int) Math.ceil(indexSelectionStart / 2);

                    if (index < annotations_size) {
                        Annotation ann = (Annotation) annotations.elementAt(index);
                        setActiveAnnotation(ann);
                    } else {
                        setMediaTime(arrTagTimes[indexSelectionStart]);
                    }

                    return;
                }

                //if dragged
                index = Math.abs(Arrays.binarySearch(arrTagPositions,
                            selectionEndPosition));

                for (int j = 2; j >= -2; j--) {
                    indexj = index + j;

                    if ((indexj >= 0) && (indexj < arrTagTimes.length)) {
                        if (arrTagPositions[indexj] >= selectionEndPosition) {
                            indexSelectionEnd = indexj;
                        }
                    }
                }

                //if dragged outside right border, then determine the new indexSelectionEnd
                int indexNewJ;

                if ((indexj + 2) < arrTagTimes.length) {
                    indexNewJ = indexj + 2;
                } else if ((indexj + 1) < arrTagTimes.length) {
                    indexNewJ = indexj + 1;
                } else {
                    indexNewJ = indexj;
                }

                if (indexSelectionEnd == 0) {
                    indexSelectionEnd = indexNewJ;
                }

                if ((indexSelectionStart < indexSelectionEnd) &&
                        (indexSelectionEnd < arrTagTimes.length)) {
                    setSelection(arrTagTimes[indexSelectionStart],
                        arrTagTimes[indexSelectionEnd]);
                    setMediaTime(arrTagTimes[indexSelectionStart]);
                }
            }
        }
    }

    //end of TextViewerMouseListener

    /**
     * Handles mouse motion actions on the text viewer
     */
    private class TextViewerMouseMotionListener extends MouseMotionAdapter {
        /**
         * DOCUMENT ME!
         *
         * @param e DOCUMENT ME!
         */
        public void mouseDragged(MouseEvent e) {
            //see comment in mouseReleased from TextViewerMouseListener
            taText.setSelectionColor(Constants.SELECTIONCOLOR);
        }
    }

    //end of TextViewerMouseMotionListener

    /**
     * DOCUMENT ME!
     * $Id: TextViewer.java,v 1.5 2006/01/12 17:25:14 hasloe Exp $
     * @author $Author: hasloe $
     * @version $Revision: 1.5 $
     */
    private class TextViewerComponentListener extends ComponentAdapter {
        /**
         * DOCUMENT ME!
         *
         * @param e DOCUMENT ME!
         */
        public void componentResized(ComponentEvent e) {
            doUpdate();
        }
    }
}