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

Example 26 with Component

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

the class TablePaneSkin method getPreferredColumnWidth.

/**
 * Gets the preferred width of a table pane column, which is defined as the
 * maximum preferred width of the column's visible components. <p> Because
 * their preferred width relates to the preferred widths of other columns,
 * components that span multiple columns will not be considered in this
 * calculation (even if they live in the column directly). It is up to the
 * caller to factor such components into the column widths calculation.
 *
 * @param columnIndex The index of the column whose preferred width we're
 * calculating
 */
private int getPreferredColumnWidth(int columnIndex) {
    TablePane tablePane = (TablePane) getComponent();
    TablePane.RowSequence rows = tablePane.getRows();
    int preferredWidth = 0;
    for (int i = 0, n = rows.getLength(); i < n; i++) {
        TablePane.Row row = rows.get(i);
        if (row.getLength() > columnIndex) {
            Component component = row.get(columnIndex);
            if (component != null && component.isVisible() && TablePane.getColumnSpan(component) == 1) {
                preferredWidth = Math.max(preferredWidth, component.getPreferredWidth(-1));
            }
        }
    }
    return preferredWidth;
}

Example 27 with Component

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

the class TablePaneSkin method getOccupiedCells.

/**
 * Returns a grid indicating which cells are occupied. A component is said
 * to occupy a cell if it is visible and either lives in the cell directly
 * or spans the cell. Conversely, vacant cells do not have visible
 * components within them or spanning them.
 *
 * @return A grid of booleans, where occupied cells are denoted by
 * <tt>true</tt>, and vacant cells are denoted by <tt>false</tt>
 */
private boolean[][] getOccupiedCells() {
    TablePane tablePane = (TablePane) getComponent();
    TablePane.RowSequence rows = tablePane.getRows();
    TablePane.ColumnSequence columns = tablePane.getColumns();
    int rowCount = rows.getLength();
    int columnCount = columns.getLength();
    boolean[][] occupiedCells = new boolean[rowCount][columnCount];
    for (int i = 0; i < rowCount; i++) {
        TablePane.Row row = rows.get(i);
        for (int j = 0, n = row.getLength(); j < n && j < columnCount; j++) {
            Component component = row.get(j);
            if (component != null && component.isVisible()) {
                int rowSpan = TablePane.getRowSpan(component);
                int columnSpan = TablePane.getColumnSpan(component);
                for (int k = 0; k < rowSpan && i + k < rowCount; k++) {
                    for (int l = 0; l < columnSpan && j + l < columnCount; l++) {
                        occupiedCells[i + k][j + l] = true;
                    }
                }
            }
        }
    }
    return occupiedCells;
}

Example 28 with Component

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

the class TablePaneSkin method layout.

@Override
public void layout() {
    TablePane tablePane = (TablePane) getComponent();
    TablePane.RowSequence rows = tablePane.getRows();
    TablePane.ColumnSequence columns = tablePane.getColumns();
    int rowCount = rows.getLength();
    int columnCount = columns.getLength();
    int width = getWidth();
    int height = getHeight();
    // NOTE We cache column widths and row heights to make getColumnAt()
    // and getRowAt() more efficient
    columnWidths = getColumnWidths(width);
    rowHeights = getRowHeights(height, columnWidths);
    // Determine which rows and column should be visible so we know which
    // ones should be collapsed
    boolean[] visibleRows = new boolean[rowCount];
    boolean[] visibleColumns = new boolean[columnCount];
    boolean[][] occupiedCells = getOccupiedCells();
    for (int i = 0; i < rowCount; i++) {
        for (int j = 0; j < columnCount; j++) {
            if (occupiedCells[i][j]) {
                visibleRows[i] = true;
                visibleColumns[j] = true;
            }
        }
    }
    int componentY = padding.top;
    for (int i = 0; i < rowCount; i++) {
        TablePane.Row row = rows.get(i);
        int componentX = padding.left;
        for (int j = 0, n = row.getLength(); j < n && j < columnCount; j++) {
            Component child = row.get(j);
            if (child != null && child.isVisible()) {
                child.setLocation(componentX, componentY);
                int columnSpan = TablePane.getColumnSpan(child);
                columnSpan = Math.min(columnSpan, columnCount - j);
                int childWidth = (columnSpan - 1) * horizontalSpacing;
                for (int k = 0; k < columnSpan && j + k < columnCount; k++) {
                    childWidth += columnWidths[j + k];
                }
                int rowSpan = TablePane.getRowSpan(child);
                rowSpan = Math.min(rowSpan, rowCount - i);
                int childHeight = (rowSpan - 1) * verticalSpacing;
                for (int k = 0; k < rowSpan && i + k < rowCount; k++) {
                    childHeight += rowHeights[i + k];
                }
                // Set the component's size
                child.setSize(Math.max(childWidth, 0), Math.max(childHeight, 0));
            }
            if (visibleColumns[j]) {
                componentX += (columnWidths[j] + horizontalSpacing);
            }
        }
        if (visibleRows[i]) {
            componentY += (rowHeights[i] + verticalSpacing);
        }
    }
}

Example 29 with Component

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

the class TablePaneSkin method getColumnWidths.

/**
 * Gets the width of each table pane column given the specified table pane
 * width.
 *
 * @param width The width constraint of the table pane
 * @return An array containing the width of each column in the table pane
 * given the specified constraint
 */
private int[] getColumnWidths(int width) {
    TablePane tablePane = (TablePane) getComponent();
    TablePane.RowSequence rows = tablePane.getRows();
    TablePane.ColumnSequence columns = tablePane.getColumns();
    int rowCount = rows.getLength();
    int columnCount = columns.getLength();
    int[] columnWidthsLocal = new int[columnCount];
    boolean[] defaultWidthColumns = new boolean[columnCount];
    int totalRelativeWeight = 0;
    int visibleColumnCount = 0;
    int reservedWidth = padding.getWidth();
    for (int j = 0; j < columnCount; j++) {
        if (isColumnVisible(j)) {
            TablePane.Column column = columns.get(j);
            int columnWidth = column.getWidth();
            if (column.isRelative()) {
                columnWidthsLocal[j] = -columnWidth;
                totalRelativeWeight += columnWidth;
            } else {
                if (columnWidth < 0) {
                    // Default width column; we must calculate the width
                    columnWidth = getPreferredColumnWidth(j);
                    defaultWidthColumns[j] = true;
                }
                columnWidthsLocal[j] = columnWidth;
                reservedWidth += columnWidth;
            }
            visibleColumnCount++;
        } else {
            columnWidthsLocal[j] = 0;
        }
    }
    if (visibleColumnCount > 1) {
        reservedWidth += (visibleColumnCount - 1) * horizontalSpacing;
    }
    for (int i = 0; i < rowCount; i++) {
        TablePane.Row row = rows.get(i);
        for (int j = 0, n = row.getLength(); j < n && j < columnCount; j++) {
            Component component = row.get(j);
            if (component != null && component.isVisible()) {
                int columnSpan = TablePane.getColumnSpan(component);
                if (columnSpan > 1) {
                    // We might need to adjust column widths to accomodate
                    // this spanning cell. First, we find out if any of the
                    // spanned cells are default width and how much space
                    // we've allocated thus far for those cells
                    boolean adjustCells = true;
                    int spannedDefaultWidthCellCount = 0;
                    int spannedWidth = 0;
                    for (int k = 0; k < columnSpan && j + k < columnCount; k++) {
                        if (columnWidthsLocal[j + k] < 0) {
                            adjustCells = false;
                            break;
                        }
                        if (defaultWidthColumns[j + k]) {
                            spannedDefaultWidthCellCount++;
                        }
                        spannedWidth += columnWidthsLocal[j + k];
                    }
                    if (adjustCells && spannedDefaultWidthCellCount > 0) {
                        int componentPreferredWidth = component.getPreferredWidth(-1);
                        if (componentPreferredWidth > spannedWidth) {
                            // The component's preferred width is larger
                            // than the width we've allocated thus far, so
                            // an adjustment is necessary
                            int adjustment = componentPreferredWidth - spannedWidth;
                            // among the default-width columns
                            for (int k = 0; k < columnSpan && j + k < columnCount; k++) {
                                if (defaultWidthColumns[j + k]) {
                                    int columnAdjustment = adjustment / spannedDefaultWidthCellCount;
                                    columnWidthsLocal[j + k] += columnAdjustment;
                                    reservedWidth += columnAdjustment;
                                    // Adjust these to avoid rounding errors
                                    adjustment -= columnAdjustment;
                                    spannedDefaultWidthCellCount--;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    // Finally, we allocate the widths of the relative columns by divvying
    // up the remaining width
    int remainingWidth = Math.max(width - reservedWidth, 0);
    if (totalRelativeWeight > 0 && remainingWidth > 0) {
        for (int j = 0; j < columnCount; j++) {
            if (columnWidthsLocal[j] < 0) {
                int relativeWeight = -columnWidthsLocal[j];
                float weightPercentage = relativeWeight / (float) totalRelativeWeight;
                int columnWidth = (int) (remainingWidth * weightPercentage);
                columnWidthsLocal[j] = columnWidth;
                // NOTE we adjust remainingWidth and totalRelativeWeight as
                // we go
                // to avoid potential rounding errors in the columnWidth
                // calculation
                remainingWidth -= columnWidth;
                totalRelativeWeight -= relativeWeight;
            }
        }
    }
    return columnWidthsLocal;
}

Example 30 with Component

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

the class TablePaneSkin method getPreferredHeight.

@Override
public int getPreferredHeight(int width) {
    TablePane tablePane = (TablePane) getComponent();
    TablePane.RowSequence rows = tablePane.getRows();
    TablePane.ColumnSequence columns = tablePane.getColumns();
    int rowCount = rows.getLength();
    int columnCount = columns.getLength();
    int[] rowHeightsLocal = new int[rowCount];
    int[] relativeWeights = new int[rowCount];
    boolean[] defaultHeightRows = new boolean[rowCount];
    int totalRelativeWeight = 0;
    int widthUpdated = width;
    if (widthUpdated < 0) {
        widthUpdated = getPreferredWidth(-1);
    }
    int[] columnWidthsLocal = getColumnWidths(widthUpdated);
    for (int i = 0; i < rowCount; i++) {
        TablePane.Row row = rows.get(i);
        int rowHeight = row.getHeight();
        boolean isRelative = row.isRelative();
        defaultHeightRows[i] = (rowHeight < 0);
        if (isRelative) {
            relativeWeights[i] = rowHeight;
            totalRelativeWeight += rowHeight;
        }
        if (rowHeight < 0 || isRelative) {
            rowHeight = getPreferredRowHeight(i, columnWidthsLocal);
        }
        rowHeightsLocal[i] = rowHeight;
    }
    if (totalRelativeWeight > 0) {
        int totalRelativeHeight = 0;
        for (int i = 0; i < rowCount; i++) {
            int rowHeight = rowHeightsLocal[i];
            int relativeWeight = relativeWeights[i];
            if (relativeWeight > 0) {
                float weightPercentage = relativeWeight / (float) totalRelativeWeight;
                totalRelativeHeight = Math.max(totalRelativeHeight, (int) (rowHeight / weightPercentage));
            }
        }
        for (int i = 0; i < rowCount; i++) {
            int relativeWeight = relativeWeights[i];
            if (relativeWeight > 0) {
                float weightPercentage = relativeWeight / (float) totalRelativeWeight;
                rowHeightsLocal[i] = (int) (weightPercentage * totalRelativeHeight);
            }
        }
    }
    for (int i = 0; i < rowCount; i++) {
        TablePane.Row row = rows.get(i);
        for (int j = 0, n = row.getLength(); j < n && j < columnCount; j++) {
            Component component = row.get(j);
            if (component != null && component.isVisible()) {
                int rowSpan = TablePane.getRowSpan(component);
                if (rowSpan > 1) {
                    // We might need to adjust row heights to accomodate
                    // this spanning cell. First, we find out if any of the
                    // spanned cells are default height and how much space
                    // we've allocated thus far for those cells
                    int spannedDefaultHeightCellCount = 0;
                    int spannedRelativeWeight = 0;
                    int spannedHeight = 0;
                    for (int k = 0; k < rowSpan && i + k < rowCount; k++) {
                        if (defaultHeightRows[i + k]) {
                            spannedDefaultHeightCellCount++;
                        }
                        spannedRelativeWeight += relativeWeights[i + k];
                        spannedHeight += rowHeightsLocal[i + k];
                    }
                    if (spannedRelativeWeight > 0 || spannedDefaultHeightCellCount > 0) {
                        int componentPreferredHeight = component.getPreferredHeight(columnWidthsLocal[j]);
                        if (componentPreferredHeight > spannedHeight) {
                            // The component's preferred height is larger
                            // than the height we've allocated thus far, so
                            // an adjustment is necessary
                            int adjustment = componentPreferredHeight - spannedHeight;
                            if (spannedRelativeWeight > 0) {
                                // We'll distribute the adjustment across
                                // the spanned relative rows and adjust
                                // other relative row heights to keep all
                                // relative row heights reconciled
                                float unitAdjustment = adjustment / (float) spannedRelativeWeight;
                                for (int k = 0; k < rowCount; k++) {
                                    int relativeWeight = relativeWeights[k];
                                    if (relativeWeight > 0) {
                                        int rowAdjustment = Math.round(unitAdjustment * relativeWeight);
                                        rowHeightsLocal[k] += rowAdjustment;
                                    }
                                }
                            } else {
                                // among the default-height rows
                                for (int k = 0; k < rowSpan && i + k < rowCount; k++) {
                                    if (defaultHeightRows[i + k]) {
                                        int rowAdjustment = adjustment / spannedDefaultHeightCellCount;
                                        rowHeightsLocal[i + k] += rowAdjustment;
                                        // Adjust these to avoid rounding
                                        // errors
                                        adjustment -= rowAdjustment;
                                        spannedDefaultHeightCellCount--;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    // The preferred height of the table pane is the sum of the row
    // heights, plus padding and spacing
    boolean[][] occupiedCells = getOccupiedCells();
    int visibleRowCount = 0;
    int preferredHeight = padding.getHeight();
    for (int i = 0; i < rowCount; i++) {
        boolean rowVisible = false;
        for (int j = 0; j < columnCount; j++) {
            if (occupiedCells[i][j]) {
                rowVisible = true;
                break;
            }
        }
        if (rowVisible) {
            preferredHeight += rowHeightsLocal[i];
            visibleRowCount++;
        }
    }
    if (visibleRowCount > 1) {
        preferredHeight += (visibleRowCount - 1) * verticalSpacing;
    }
    return preferredHeight;
}