Package org.apache.pivot.wtk

Examples of org.apache.pivot.wtk.TextArea

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    @Override
    public void focusedChanged(Component component, Component obverseComponent) {
        super.focusedChanged(component, obverseComponent);

        TextArea textArea = (TextArea)getComponent();
        if (textArea.isFocused()
            && textArea.getSelectionLength() == 0) {
            if (textArea.isValid()) {
                scrollCharacterToVisible(textArea.getSelectionStart());
            }

            showCaret(true);
        } else {
            showCaret(false);
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            }
        }
    }

    private void updateSelection() {
        TextArea textArea = (TextArea)getComponent();

        if (paragraphViews.getLength() > 0) {
            // Update the caret
            int selectionStart = textArea.getSelectionStart();

            Bounds leadingSelectionBounds = getCharacterBounds(selectionStart);
            caret = leadingSelectionBounds.toRectangle();
            caret.width = 1;

            // Update the selection
            int selectionLength = textArea.getSelectionLength();

            if (selectionLength > 0) {
                int selectionEnd = selectionStart + selectionLength - 1;
                Bounds trailingSelectionBounds = getCharacterBounds(selectionEnd);
                selection = new Area();
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        @Override
        public void run() {
            caretOn = !caretOn;

            if (selection == null) {
                TextArea textArea = (TextArea) getComponent();
                textArea.repaint(caret.x, caret.y, caret.width, caret.height);
            }
        }
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    }

    private class ScrollSelectionCallback implements Runnable {
        @Override
        public void run() {
            TextArea textArea = (TextArea)getComponent();
            int selectionStart = textArea.getSelectionStart();
            int selectionLength = textArea.getSelectionLength();
            int selectionEnd = selectionStart + selectionLength - 1;

            switch (scrollDirection) {
                case UP: {
                    // Get previous offset
                    int index = getNextInsertionPoint(mouseX, selectionStart, scrollDirection);

                    if (index != -1) {
                        textArea.setSelection(index, selectionEnd - index + 1);
                        scrollCharacterToVisible(index + 1);
                    }

                    break;
                }

                case DOWN: {
                    // Get next offset
                    int index = getNextInsertionPoint(mouseX, selectionEnd, scrollDirection);

                    if (index != -1) {
                        // If the next character is a paragraph terminator, increment
                        // the selection
                        if (index < textArea.getCharacterCount()
                            && textArea.getCharacterAt(index) == '\n') {
                            index++;
                        }

                        textArea.setSelection(selectionStart, index - selectionStart);
                        scrollCharacterToVisible(index - 1);
                    }

                    break;
                }
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        return -1;
    }

    @Override
    public void paint(Graphics2D graphics) {
        TextArea textArea = (TextArea)textAreaSkin.getComponent();

        int selectionStart = textArea.getSelectionStart();
        int selectionLength = textArea.getSelectionLength();
        Span selectionRange = new Span(selectionStart, selectionStart + selectionLength - 1);

        int paragraphOffset = paragraph.getOffset();
        Span characterRange = new Span(paragraphOffset, paragraphOffset
            + paragraph.getCharacters().length() - 1);

        if (selectionLength > 0
            && characterRange.intersects(selectionRange)) {
            boolean focused = textArea.isFocused();
            boolean editable = textArea.isEditable();

            // Determine the selected and unselected areas
            Area selection = textAreaSkin.getSelection();
            Area selectedArea = selection.createTransformedArea(AffineTransform.getTranslateInstance(-x, -y));
            Area unselectedArea = new Area();
            unselectedArea.add(new Area(new Rectangle2D.Float(0, 0, width, height)));
            unselectedArea.subtract(new Area(selectedArea));

            // Paint the unselected text
            Graphics2D unselectedGraphics = (Graphics2D)graphics.create();
            unselectedGraphics.clip(unselectedArea);
            paint(unselectedGraphics, focused, editable, false);
            unselectedGraphics.dispose();

            // Paint the selected text
            Graphics2D selectedGraphics = (Graphics2D)graphics.create();
            selectedGraphics.clip(selectedArea);
            paint(selectedGraphics, focused, editable, true);
            selectedGraphics.dispose();
        } else {
            paint(graphics, textArea.isFocused(), textArea.isEditable(), false);
        }
    }
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    @Override
    public void install(Component component) {
        super.install(component);

        TextArea textArea = (TextArea)component;
        textArea.getTextAreaListeners().add(this);
        textArea.getTextAreaSelectionListeners().add(this);

        textArea.setCursor(Cursor.TEXT);

        Document document = textArea.getDocument();
        if (document != null) {
            documentView = (DocumentView)createNodeView(document);
            documentView.attach();
            updateSelection();
        }
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    }

    @Override
    public void layout() {
        if (documentView != null) {
            TextArea textArea = (TextArea)getComponent();
            int width = getWidth();

            documentView.setBreakWidth(Math.max(width - (margin.left + margin.right), 0));
            documentView.validate();

            updateSelection();
            caretX = caret.x;

            if (textArea.isFocused()) {
                scrollCharacterToVisible(textArea.getSelectionStart());
            }

            showCaret(textArea.isFocused()
                && textArea.getSelectionLength() == 0);
        }
    }
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        }
    }

    @Override
    public void paint(Graphics2D graphics) {
        TextArea textArea = (TextArea)getComponent();
        int width = getWidth();
        int height = getHeight();

        if (backgroundColor != null) {
            graphics.setColor(backgroundColor);
            graphics.fillRect(0, 0, width, height);
        }

        if (documentView != null) {
            // Draw the selection highlight
            if (selection != null) {
                graphics.setColor(textArea.isFocused()
                    && textArea.isEditable() ?
                    selectionBackgroundColor : inactiveSelectionBackgroundColor);
                graphics.fill(selection);
            }

            // Draw the document content
            graphics.translate(margin.left, margin.top);
            documentView.paint(graphics);
            graphics.translate(-margin.left, -margin.top);

            // Draw the caret
            if (selection == null
                && caretOn
                && textArea.isFocused()) {
                graphics.setColor(textArea.isEditable() ? color : inactiveColor);
                graphics.fill(caret);
            }
        }
    }
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        return characterBounds;
    }

    private void scrollCharacterToVisible(int offset) {
        TextArea textArea = (TextArea)getComponent();
        Bounds characterBounds = getCharacterBounds(offset);

        if (characterBounds != null) {
            textArea.scrollAreaToVisible(characterBounds.x, characterBounds.y,
                characterBounds.width, characterBounds.height);
        }
    }
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    @Override
    public boolean mouseMove(Component component, int x, int y) {
        boolean consumed = super.mouseMove(component, x, y);

        if (Mouse.getCapturer() == component) {
            TextArea textArea = (TextArea)getComponent();

            Bounds visibleArea = textArea.getVisibleArea();
            visibleArea = new Bounds(visibleArea.x, visibleArea.y,
                visibleArea.width, visibleArea.height);

            if (y >= visibleArea.y
                && y < visibleArea.y + visibleArea.height) {
                // Stop the scroll selection timer
                if (scheduledScrollSelectionCallback != null) {
                    scheduledScrollSelectionCallback.cancel();
                    scheduledScrollSelectionCallback = null;
                }

                scrollDirection = null;
                int offset = getInsertionPoint(x, y);

                if (offset != -1) {
                    // Select the range
                    if (offset > anchor) {
                        textArea.setSelection(anchor, offset - anchor);
                    } else {
                        textArea.setSelection(offset, anchor - offset);
                    }
                }
            } else {
                if (scheduledScrollSelectionCallback == null) {
                    scrollDirection = (y < visibleArea.y) ? FocusTraversalDirection.BACKWARD : FocusTraversalDirection.FORWARD;
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Related Classes of org.apache.pivot.wtk.TextArea

  • org.apache.pivot.tests.issues.Pivot841
  • org.apache.pivot.tests.TableViewTest2
  • org.apache.pivot.tutorials.bxmlexplorer.BXMLExplorer
  • org.apache.pivot.wtk.skin.terra.TerraFileBrowserSkin
  • org.apache.pivot.wtk.skin.TextAreaSkin
  • org.apache.pivot.wtk.skin.TextAreaSkin$BlinkCaretCallback
  • org.apache.pivot.wtk.skin.TextAreaSkin$BlinkCursorCallback
  • org.apache.pivot.wtk.skin.TextAreaSkin$DocumentView
  • org.apache.pivot.wtk.skin.TextAreaSkin$ScrollSelectionCallback
  • org.apache.pivot.wtk.skin.TextAreaSkin$TextNodeView
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