List of usage examples for org.eclipse.swt.widgets ScrollBar setThumb
public void setThumb(int thumb)
From source file:org.eclipse.swt.examples.accessibility.CTable.java
void updateColumnWidth(CTableColumn column, int width) { headerHideToolTip();//from w w w . ja v a 2 s.c o m int oldWidth = column.width; int columnX = column.getX(); int x = columnX + oldWidth - 1; /* -1 ensures that grid line is included */ update(); GC gc = new GC(this); gc.copyArea(x, 0, clientArea.width - x, clientArea.height, columnX + width - 1, 0); /* dest x -1 offsets x's -1 above */ if (width > oldWidth) { /* column width grew */ int change = width - oldWidth + 1; /* +1 offsets x's -1 above */ /* -1/+1 below ensure that right bound of selection redraws correctly in column */ redraw(x - 1, 0, change + 1, clientArea.height, false); } else { int change = oldWidth - width + 1; /* +1 offsets x's -1 above */ redraw(clientArea.width - change, 0, change, clientArea.height, false); } /* the focus box must be repainted because its stipple may become shifted as a result of its new width */ if (focusItem != null) redrawItem(focusItem.index, true); GC headerGC = new GC(header); if (drawCount <= 0 && header.getVisible()) { Rectangle headerBounds = header.getClientArea(); header.update(); x -= 1; /* -1 ensures that full header column separator is included */ headerGC.copyArea(x, 0, headerBounds.width - x, headerBounds.height, columnX + width - 2, 0); /* dest x -2 offsets x's -1s above */ if (width > oldWidth) { /* column width grew */ int change = width - oldWidth + 2; /* +2 offsets x's -1s above */ header.redraw(x, 0, change, headerBounds.height, false); } else { int change = oldWidth - width + 2; /* +2 offsets x's -1s above */ header.redraw(headerBounds.width - change, 0, change, headerBounds.height, false); } } column.width = width; /* * Notify column and all items of column width change so that display labels * can be recomputed if needed. */ column.updateWidth(headerGC); headerGC.dispose(); for (int i = 0; i < itemsCount; i++) { items[i].updateColumnWidth(column, gc); } gc.dispose(); int maximum = 0; for (CTableColumn column2 : columns) { maximum += column2.width; } ScrollBar hBar = getHorizontalBar(); if (hBar != null) { hBar.setMaximum(Math.max(1, maximum)); /* setting a value of 0 here is ignored */ if (hBar.getThumb() != clientArea.width) { hBar.setThumb(clientArea.width); hBar.setPageIncrement(clientArea.width); } int oldHorizontalOffset = horizontalOffset; /* hBar.setVisible() can modify horizontalOffset */ hBar.setVisible(clientArea.width < maximum); int selection = hBar.getSelection(); if (selection != oldHorizontalOffset) { horizontalOffset = selection; redraw(); if (drawCount <= 0 && header.getVisible()) header.redraw(); } } column.notifyListeners(SWT.Resize, new Event()); CTableColumn[] orderedColumns = getOrderedColumns(); for (int i = column.getOrderIndex() + 1; i < orderedColumns.length; i++) { if (!orderedColumns[i].isDisposed()) { orderedColumns[i].notifyListeners(SWT.Move, new Event()); } } if (itemsCount == 0) redraw(); /* ensure that static focus rectangle updates properly */ }
From source file:org.eclipse.swt.examples.accessibility.CTable.java
void updateHorizontalBar(int newRightX, int rightXchange) { if (drawCount > 0) return;//w ww . j ava2 s. c o m ScrollBar hBar = getHorizontalBar(); if (hBar == null) return; newRightX += horizontalOffset; int barMaximum = hBar.getMaximum(); if (newRightX > barMaximum) { /* item has extended beyond previous maximum */ hBar.setMaximum(newRightX); int clientAreaWidth = clientArea.width; int thumb = Math.min(newRightX, clientAreaWidth); hBar.setThumb(thumb); hBar.setPageIncrement(thumb); hBar.setVisible(clientAreaWidth <= newRightX); return; } int previousRightX = newRightX - rightXchange; if (previousRightX != barMaximum) { /* this was not the rightmost item, so just check for client width change */ int clientAreaWidth = clientArea.width; int thumb = Math.min(barMaximum, clientAreaWidth); hBar.setThumb(thumb); hBar.setPageIncrement(thumb); hBar.setVisible(clientAreaWidth <= barMaximum); return; } updateHorizontalBar(); /* must search for the new rightmost item */ }
From source file:org.eclipse.swt.examples.accessibility.CTable.java
void updateVerticalBar() { if (drawCount > 0) return;//from w ww.j ava 2 s . c om ScrollBar vBar = getVerticalBar(); if (vBar == null) return; int pageSize = (clientArea.height - getHeaderHeight()) / itemHeight; int maximum = Math.max(1, itemsCount); /* setting a value of 0 here is ignored */ if (maximum != vBar.getMaximum()) { vBar.setMaximum(maximum); } int thumb = Math.min(pageSize, maximum); if (thumb != vBar.getThumb()) { vBar.setThumb(thumb); vBar.setPageIncrement(thumb); } vBar.setVisible(pageSize < maximum); /* reclaim any space now left on the bottom */ if (maximum < topIndex + thumb) { topIndex = maximum - thumb; vBar.setSelection(topIndex); redraw(); } else { int selection = vBar.getSelection(); if (selection != topIndex) { topIndex = selection; redraw(); } } }
From source file:org.eclipse.swt.examples.accessibility.CTable.java
void updateHorizontalBar() { if (drawCount > 0) return;/*w w w .j a v a 2 s . c o m*/ ScrollBar hBar = getHorizontalBar(); if (hBar == null) return; int maxX = 0; if (columns.length > 0) { for (CTableColumn column : columns) { maxX += column.width; } } else { for (int i = 0; i < itemsCount; i++) { Rectangle itemBounds = items[i].getCellBounds(0); maxX = Math.max(maxX, itemBounds.x + itemBounds.width + horizontalOffset); } } int clientWidth = clientArea.width; if (maxX != hBar.getMaximum()) { hBar.setMaximum(Math.max(1, maxX)); /* setting a value of 0 here is ignored */ } int thumb = Math.min(clientWidth, maxX); if (thumb != hBar.getThumb()) { hBar.setThumb(thumb); hBar.setPageIncrement(thumb); } hBar.setVisible(clientWidth < maxX); /* reclaim any space now left on the right */ if (maxX < horizontalOffset + thumb) { horizontalOffset = maxX - thumb; hBar.setSelection(horizontalOffset); redraw(); } else { int selection = hBar.getSelection(); if (selection != horizontalOffset) { horizontalOffset = selection; redraw(); } } }
From source file:PrintKTableExample.java
protected void doCalculations() { if (m_Model == null) { ScrollBar sb = getHorizontalBar(); if (sb != null) { sb.setMinimum(0);//from w ww . ja v a2 s . c o m 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); } } }
From source file:CustomControlExample.java
/** * Resizes the maximum and thumb of both scrollbars. *//*from w w w . j av a 2s . co m*/ void resizeScrollBars() { Rectangle clientArea = canvas.getClientArea(); ScrollBar bar = canvas.getHorizontalBar(); if (bar != null) { bar.setMaximum(maxX); bar.setThumb(clientArea.width); bar.setPageIncrement(clientArea.width); } bar = canvas.getVerticalBar(); if (bar != null) { bar.setMaximum(maxY); bar.setThumb(clientArea.height); bar.setPageIncrement(clientArea.height); } }