Examples with ScrollPane org.apache.pivot.wtk.ScrollPane used on opensource projects

Example 1 with ScrollPane

use of org.apache.pivot.wtk.ScrollPane in project pivot by apache.

the class Pivot811 method startup.

@Override
public void startup(final Display displayArgument, Map<String, String> properties) throws Exception {
    this.display = displayArgument;
    Frame listFrame = new Frame();
    listFrame.setTitle("List Frame");
    listFrame.setPreferredSize(400, 300);
    listFrame.setLocation(20, 20);
    listFrame.getStyles().put(Style.padding, Insets.NONE);
    BoxPane boxPane = new BoxPane();
    boxPane.getStyles().put(Style.fill, true);
    boxPane.setOrientation(Orientation.VERTICAL);
    listFrame.setContent(boxPane);
    Label infoLabel = new Label("Double click on a list item to open a detail frame");
    boxPane.add(infoLabel);
    ScrollPane scrollPane = new ScrollPane();
    scrollPane.setHorizontalScrollBarPolicy(ScrollBarPolicy.FILL);
    scrollPane.setVerticalScrollBarPolicy(ScrollBarPolicy.FILL_TO_CAPACITY);
    // workaround for pivot-738,
    scrollPane.setRepaintAllViewport(true);
    // needed only in in some cases
    boxPane.add(scrollPane);
    final ListView listView = new ListView();
    List<String> listData = new ArrayList<>();
    for (int i = 0; i < 50; ++i) {
        listData.add("List Item " + i);
    }
    listView.setListData(listData);
    scrollPane.setView(listView);
    listView.getListViewSelectionListeners().add(new ListViewSelectionListener() {

        @Override
        public void selectedItemChanged(ListView listViewArgument, Object previousSelectedItem) {
            System.out.println("selectedItemChanged : " + listViewArgument.getSelectedItem());
        }
    });
    listView.getComponentMouseButtonListeners().add(new ComponentMouseButtonListener() {

        @Override
        public boolean mouseClick(Component component, Mouse.Button button, int x, int y, int count) {
            System.out.println("mouseClick : " + count);
            if (count == 2) {
                System.out.println("double click, now open a detail frame");
                Frame detailFrame = new Frame();
                detailFrame.setTitle("Detail Frame");
                detailFrame.setPreferredSize(400, 300);
                int selectedIndex = listView.getSelectedIndex();
                detailFrame.setLocation(80 + (selectedIndex * 10), 80 + (selectedIndex * 10));
                detailFrame.getStyles().put(Style.padding, Insets.NONE);
                BoxPane boxPaneLocal = new BoxPane();
                boxPaneLocal.getStyles().put(Style.fill, true);
                boxPaneLocal.setOrientation(Orientation.VERTICAL);
                detailFrame.setContent(boxPaneLocal);
                String selectedItem = listView.getSelectedItem().toString();
                Label label = new Label("Selected Item is \"" + selectedItem + "\"");
                boxPaneLocal.add(label);
                // spacer
                boxPaneLocal.add(new Label(""));
                boxPaneLocal.add(new Label("Click inside the text input to focus it"));
                TextInput textInput = new TextInput();
                textInput.setText("Focusable component");
                // workaround for pivot-811:
                boxPaneLocal.add(textInput);
                // add a focusable element
                // inside the frame
                detailFrame.open(displayArgument);
                // workaround for pivot-811: force the focus on the first
                // focusable element inside the frame
                detailFrame.requestFocus();
            // textInput.requestFocus(); // or use this ...
            }
            return true;
        }
    });
    listFrame.open(displayArgument);
    listView.setSelectedIndex(0);
    listView.requestFocus();
}

Example 2 with ScrollPane

use of org.apache.pivot.wtk.ScrollPane in project pivot by apache.

the class ScrollPaneSkin method valueChanged.

// ScrollBarValueListener methods
@Override
public void valueChanged(ScrollBar scrollBar, int previousValue) {
    ScrollPane scrollPane = (ScrollPane) getComponent();
    int value = scrollBar.getValue();
    if (scrollBar == horizontalScrollBar) {
        scrollPane.setScrollLeft(value);
    } else {
        scrollPane.setScrollTop(value);
    }
}

Example 3 with ScrollPane

use of org.apache.pivot.wtk.ScrollPane in project pivot by apache.

the class ScrollPaneSkin method getMaxScrollTop.

/**
 * Gets the maximum legal <tt>scrollTop</tt> value this this skin imposes.
 * This is the largest value possible that still shows as much of the view
 * component as it can.
 *
 * @return The maximum scrollTop value
 */
private int getMaxScrollTop() {
    int maxScrollTop = 0;
    ScrollPane scrollPane = (ScrollPane) getComponent();
    Component view = scrollPane.getView();
    if (view != null) {
        int viewHeight = view.getHeight();
        int columnHeaderHeight = 0;
        int horizontalScrollBarHeight = 0;
        int height = getHeight();
        Component columnHeader = scrollPane.getColumnHeader();
        if (columnHeader != null) {
            columnHeaderHeight = columnHeader.getHeight();
        }
        if (horizontalScrollBar.isVisible()) {
            horizontalScrollBarHeight = horizontalScrollBar.getHeight();
        }
        maxScrollTop = Math.max(viewHeight + columnHeaderHeight + horizontalScrollBarHeight - height, 0);
    }
    return maxScrollTop;
}

Example 4 with ScrollPane

use of org.apache.pivot.wtk.ScrollPane in project pivot by apache.

the class ScrollPaneSkin method getPreferredHeight.

@Override
public int getPreferredHeight(int width) {
    int preferredHeight = 0;
    ScrollPane scrollPane = (ScrollPane) getComponent();
    Component view = scrollPane.getView();
    if (view != null) {
        int preferredRowHeaderWidth = 0;
        Component rowHeader = scrollPane.getRowHeader();
        if (rowHeader != null) {
            preferredRowHeaderWidth = rowHeader.getPreferredWidth(-1);
        }
        int preferredColumnHeaderHeight = 0;
        Component columnHeader = scrollPane.getColumnHeader();
        if (columnHeader != null) {
            preferredColumnHeaderHeight = columnHeader.getPreferredHeight(-1);
        }
        ScrollBarPolicy horizontalPolicy = scrollPane.getHorizontalScrollBarPolicy();
        if (horizontalPolicy != ScrollBarPolicy.FILL) {
            // Get the unconstrained preferred size of the view
            Dimensions preferredViewSize = view.getPreferredSize();
            if (horizontalPolicy == ScrollBarPolicy.FILL_TO_CAPACITY) {
                if (width < 0) {
                    horizontalPolicy = ScrollBarPolicy.AUTO;
                } else {
                    int preferredWidth = preferredViewSize.width + preferredRowHeaderWidth;
                    if (preferredWidth < width) {
                        horizontalPolicy = ScrollBarPolicy.FILL;
                    } else {
                        horizontalPolicy = ScrollBarPolicy.AUTO;
                    }
                }
            }
            if (horizontalPolicy == ScrollBarPolicy.ALWAYS || horizontalPolicy == ScrollBarPolicy.NEVER || horizontalPolicy == ScrollBarPolicy.AUTO) {
                preferredHeight = preferredViewSize.height + preferredColumnHeaderHeight;
                // height calculation
                if (horizontalPolicy == ScrollBarPolicy.ALWAYS || (horizontalPolicy == ScrollBarPolicy.AUTO && width > 0 && preferredViewSize.width + preferredRowHeaderWidth > width)) {
                    preferredHeight += horizontalScrollBar.getPreferredHeight(-1);
                }
            }
        }
        if (horizontalPolicy == ScrollBarPolicy.FILL) {
            // Preferred height is the sum of the constrained preferred height
            // of the view and the unconstrained preferred height of the column header
            int widthUpdated = width;
            if (widthUpdated >= 0) {
                // Subtract the unconstrained preferred width of the row header
                // from the width constraint
                widthUpdated = Math.max(widthUpdated - preferredRowHeaderWidth, 0);
            }
            preferredHeight = view.getPreferredHeight(widthUpdated) + preferredColumnHeaderHeight;
        }
    }
    return preferredHeight;
}

Example 5 with ScrollPane

use of org.apache.pivot.wtk.ScrollPane in project pivot by apache.

the class ScrollPaneSkin method scrollTopChanged.

// ViewportListener methods
@Override
public void scrollTopChanged(Viewport viewport, int previousScrollTop) {
    // NOTE we don't invalidate the component here because we need only
    // reposition the view and row header. Invalidating would yield
    // the correct positioning, but it would do much more work than needed.
    ScrollPane scrollPane = (ScrollPane) viewport;
    Component view = scrollPane.getView();
    Component rowHeader = scrollPane.getRowHeader();
    Component columnHeader = scrollPane.getColumnHeader();
    int columnHeaderHeight = 0;
    if (columnHeader != null) {
        columnHeaderHeight = columnHeader.getHeight();
    }
    int scrollTop = scrollPane.getScrollTop();
    if (view != null && view.isShowing() && isOptimizeScrolling()) {
        Bounds blitArea = view.getVisibleArea();
        int blitX = blitArea.x + view.getX();
        int blitY = blitArea.y + view.getY();
        int blitWidth = blitArea.width;
        int blitHeight = blitArea.height;
        if (rowHeader != null) {
            // Blit the row header as well
            int rowHeaderWidth = rowHeader.getWidth();
            blitX -= rowHeaderWidth;
            blitWidth += rowHeaderWidth;
        }
        int deltaScrollTop = scrollTop - previousScrollTop;
        blitY += Math.max(deltaScrollTop, 0);
        blitHeight -= Math.abs(deltaScrollTop);
        Graphics2D graphics = scrollPane.getGraphics();
        graphics.copyArea(blitX, blitY, blitWidth, blitHeight, 0, -deltaScrollTop);
        scrollPane.setConsumeRepaint(true);
        try {
            view.setLocation(view.getX(), columnHeaderHeight - scrollTop);
            if (rowHeader != null) {
                rowHeader.setLocation(0, columnHeaderHeight - scrollTop);
            }
        } finally {
            scrollPane.setConsumeRepaint(false);
        }
        boolean repaintAllViewport = scrollPane.isRepaintAllViewport();
        if (!repaintAllViewport) {
            scrollPane.repaint(blitX, (columnHeaderHeight + (deltaScrollTop > 0 ? blitHeight : 0)), blitWidth, Math.abs(deltaScrollTop), true);
        } else {
            Bounds viewportBounds = getViewportBounds();
            scrollPane.repaint(viewportBounds.x, viewportBounds.y, viewportBounds.width, viewportBounds.height, true);
        }
    } else {
        if (view != null) {
            view.setLocation(view.getX(), columnHeaderHeight - scrollTop);
        }
        if (rowHeader != null) {
            rowHeader.setLocation(0, columnHeaderHeight - scrollTop);
        }
    }
    if (scrollTop >= 0 && scrollTop <= getMaxScrollTop()) {
        verticalScrollBar.setValue(scrollTop);
    }
}