/* gibt die Nummer einer Modellspalte zuruck */
protected int getColumnForResize(int x, int y) {
if (m_Model == null) return -1;
if ((y <= 0)
|| (y
>= m_Model.getFirstRowHeight()
+ (m_Model.getFixedRowCount() - 1) * m_Model.getRowHeight())) return -1;
if (x < getFixedWidth() + 3) {
for (int i = 0; i < m_Model.getFixedColumnCount(); i++)
if (Math.abs(x - getColumnRight(i)) < 3) {
if (m_Model.isColumnResizable(i)) return i;
return -1;
}
}
for (int i = m_LeftColumn; i < m_Model.getColumnCount(); i++) {
int left = getColumnLeft(i);
int right = left + m_Model.getColumnWidth(i);
if (Math.abs(x - right) < 3) {
if (m_Model.isColumnResizable(i)) return i;
return -1;
}
if ((x >= left + 3) && (x <= right - 3)) break;
}
return -1;
}
protected int getColumnLeft(int index) {
if (index < m_Model.getFixedColumnCount()) {
int x = 0;
for (int i = 0; i < index; i++) {
x += m_Model.getColumnWidth(i);
}
return x;
}
if (index < m_LeftColumn) return -1;
int x = getFixedWidth();
for (int i = m_LeftColumn; i < index; i++) {
x += m_Model.getColumnWidth(i);
}
return x;
}
protected void onMouseUp(MouseEvent e) {
// if (e.button == 1)
{
if (m_Model == null) return;
setCapture(false);
m_Capture = false;
if (m_ResizeColumnIndex != -1) {
fireColumnResize(m_ResizeColumnIndex, m_Model.getColumnWidth(m_ResizeColumnIndex));
m_ResizeColumnIndex = -1;
redraw();
}
if (m_ResizeRowIndex != -1) {
m_ResizeRowIndex = -1;
m_Model.setRowHeight(m_NewRowSize);
m_LineRestore = null;
fireRowResize(m_NewRowSize);
redraw();
}
if (m_ClickColumnIndex != -1) {
int col = m_ClickColumnIndex;
int row = m_ClickRowIndex;
m_ClickColumnIndex = -1;
m_ClickRowIndex = -1;
if (m_CellEditor == null) {
drawCell(new GC(this), col, row);
}
}
}
}
/**
* Returns the number of the column that is present at position x or -1, if out of area.
*
* @param y
* @return int
*/
public int calcColumnNum(int x) {
if (m_Model == null) return -1;
int col = 0;
int z = 0;
for (int i = 0; i < m_Model.getFixedColumnCount(); i++) {
if ((x >= z) && (x <= z + m_Model.getColumnWidth(i))) {
return i;
}
z += m_Model.getColumnWidth(i);
}
col = -1;
z = getFixedWidth();
for (int i = m_LeftColumn; i < m_Model.getColumnCount(); i++) {
if ((x >= z) && (x <= z + m_Model.getColumnWidth(i))) {
col = i;
break;
}
z += m_Model.getColumnWidth(i);
}
return col;
}
/**
* Returns the area that is occupied by the given cell
*
* @param col
* @param row
* @return Rectangle
*/
public Rectangle getCellRect(int col, int row) {
int m_HeaderHeight = m_Model.getFirstRowHeight();
if ((col < 0) || (col >= m_Model.getColumnCount())) return new Rectangle(-1, -1, 0, 0);
int x = getColumnLeft(col) + 1;
int y;
if (row == 0) y = 0;
else if (row < m_Model.getFixedRowCount())
y = m_HeaderHeight + ((row - 1) * m_Model.getRowHeight());
else
y =
m_HeaderHeight
+ (m_Model.getFixedRowCount() - 1 + row - m_TopRow) * m_Model.getRowHeight();
int width = m_Model.getColumnWidth(col) - 1;
int height = m_Model.getRowHeight() - 1;
if (row == 0) height = m_Model.getFirstRowHeight() - 1;
return new Rectangle(x, y, width, height);
}
protected void onMouseMove(MouseEvent e) {
if (m_Model == null) return;
// show resize cursor?
if ((m_ResizeColumnIndex != -1) || (getColumnForResize(e.x, e.y) >= 0))
setCursor(new Cursor(m_Display, SWT.CURSOR_SIZEWE));
else if ((m_ResizeRowIndex != -1) || (getRowForResize(e.x, e.y) >= 0))
setCursor(new Cursor(m_Display, SWT.CURSOR_SIZENS));
else setCursor(null);
if (e.button == 1) {
// extend selection?
if (m_ClickColumnIndex != -1 && m_MultiSelectMode) {
int row = calcRowNum(e.y);
int col = calcColumnNum(e.x);
if (row >= m_Model.getFixedRowCount() && col >= m_Model.getFixedColumnCount()) {
m_ClickColumnIndex = col;
m_ClickRowIndex = row;
focusCell(col, row, (e.stateMask | SWT.SHIFT));
}
}
}
// column resize?
if (m_ResizeColumnIndex != -1) {
Rectangle rect = getClientArea();
int oldSize = m_Model.getColumnWidth(m_ResizeColumnIndex);
if (e.x > rect.x + rect.width - 1) e.x = rect.x + rect.width - 1;
int newSize = e.x - m_ResizeColumnLeft;
if (newSize < 5) newSize = 5;
int leftX = getColumnLeft(m_ResizeColumnIndex);
int rightX = getColumnRight(m_ResizeColumnIndex);
m_Model.setColumnWidth(m_ResizeColumnIndex, newSize);
newSize = m_Model.getColumnWidth(m_ResizeColumnIndex);
GC gc = new GC(this);
gc.copyArea(rightX, 0, rect.width - rightX, rect.height, leftX + newSize, 0);
drawCol(gc, m_ResizeColumnIndex);
if (newSize < oldSize) {
int delta = oldSize - newSize;
redraw(rect.width - delta, 0, delta, rect.height, false);
}
gc.dispose();
}
// row resize?
if (m_ResizeRowIndex != -1) {
Rectangle rect = getClientArea();
GC gc = new GC(this);
// calculate new size
if (e.y > rect.y + rect.height - 1) e.y = rect.y + rect.height - 1;
m_NewRowSize = e.y - m_ResizeRowTop;
if (m_NewRowSize < m_Model.getRowHeightMinimum())
m_NewRowSize = m_Model.getRowHeightMinimum();
// restore old line area
if (m_LineRestore != null) {
gc.drawImage(m_LineRestore, m_LineX, m_LineY);
}
// safe old picture and draw line
gc.setForeground(Display.getCurrent().getSystemColor(SWT.COLOR_BLACK));
int lineEnd = getColumnRight(m_LeftColumn + m_ColumnsVisible - 1);
m_LineRestore = new Image(m_Display, lineEnd, 1);
m_LineX = rect.x + 1;
m_LineY = m_ResizeRowTop + m_NewRowSize - 1;
gc.copyArea(m_LineRestore, m_LineX, m_LineY);
gc.drawLine(m_LineX, m_LineY, rect.x + lineEnd, m_LineY);
gc.dispose();
}
}
protected void doCalculations() {
if (m_Model == null) {
ScrollBar sb = getHorizontalBar();
if (sb != null) {
sb.setMinimum(0);
sb.setMaximum(1);
sb.setPageIncrement(1);
sb.setThumb(1);
sb.setSelection(1);
}
sb = getVerticalBar();
if (sb != null) {
sb.setMinimum(0);
sb.setMaximum(1);
sb.setPageIncrement(1);
sb.setThumb(1);
sb.setSelection(1);
}
return;
}
int m_HeaderHeight = m_Model.getFirstRowHeight();
int m_RowHeight = m_Model.getRowHeight();
Rectangle rect = getClientArea();
if (m_LeftColumn < m_Model.getFixedColumnCount()) {
m_LeftColumn = m_Model.getFixedColumnCount();
}
if (m_TopRow < m_Model.getFixedRowCount()) {
m_TopRow = m_Model.getFixedRowCount();
}
int fixedWidth = getFixedWidth();
int fixedHeight = m_HeaderHeight + (m_Model.getFixedRowCount() - 1) * m_Model.getRowHeight();
m_ColumnsVisible = 0;
m_ColumnsFullyVisible = 0;
if (m_Model.getColumnCount() > m_Model.getFixedColumnCount()) {
int runningWidth = getColumnLeft(m_LeftColumn);
for (int col = m_LeftColumn; col < m_Model.getColumnCount(); col++) {
if (runningWidth < rect.width + rect.x) m_ColumnsVisible++;
runningWidth += m_Model.getColumnWidth(col);
if (runningWidth < rect.width + rect.x) m_ColumnsFullyVisible++;
else break;
}
}
ScrollBar sb = getHorizontalBar();
if (sb != null) {
if (m_Model.getColumnCount() <= m_Model.getFixedColumnCount()) {
sb.setMinimum(0);
sb.setMaximum(1);
sb.setPageIncrement(1);
sb.setThumb(1);
sb.setSelection(1);
} else {
sb.setMinimum(m_Model.getFixedColumnCount());
sb.setMaximum(m_Model.getColumnCount());
sb.setIncrement(1);
sb.setPageIncrement(2);
sb.setThumb(m_ColumnsFullyVisible);
sb.setSelection(m_LeftColumn);
}
}
m_RowsFullyVisible = Math.max(0, (rect.height - fixedHeight) / m_RowHeight);
m_RowsFullyVisible =
Math.min(m_RowsFullyVisible, m_Model.getRowCount() - m_Model.getFixedRowCount());
m_RowsFullyVisible = Math.max(0, m_RowsFullyVisible);
m_RowsVisible = m_RowsFullyVisible + 1;
if (m_TopRow + m_RowsFullyVisible > m_Model.getRowCount()) {
m_TopRow = Math.max(m_Model.getFixedRowCount(), m_Model.getRowCount() - m_RowsFullyVisible);
}
if (m_TopRow + m_RowsFullyVisible >= m_Model.getRowCount()) {
m_RowsVisible--;
}
sb = getVerticalBar();
if (sb != null) {
if (m_Model.getRowCount() <= m_Model.getFixedRowCount()) {
sb.setMinimum(0);
sb.setMaximum(1);
sb.setPageIncrement(1);
sb.setThumb(1);
sb.setSelection(1);
} else {
sb.setMinimum(m_Model.getFixedRowCount());
sb.setMaximum(m_Model.getRowCount());
sb.setPageIncrement(m_RowsVisible);
sb.setIncrement(1);
sb.setThumb(m_RowsFullyVisible);
sb.setSelection(m_TopRow);
}
}
}
protected int getColumnRight(int index) {
if (index < 0) return 0;
return getColumnLeft(index) + m_Model.getColumnWidth(index);
}
protected int getFixedWidth() {
int width = 0;
for (int i = 0; i < m_Model.getFixedColumnCount(); i++) width += m_Model.getColumnWidth(i);
return width;
}
