/**
* 添加Text的文本
*
* @param msg
*/
public void appendText(String msg) {
if (text.getLineCount() > lineLimit) {
text.setText("");
}
text.append(msg);
}
// Returns the line we clicked on based on mouse coordinates
public int getLine(int mouseY) {
int topLine = m_Text.getTopIndex();
int lineHeight = m_Text.getLineHeight();
int screenLine = mouseY / lineHeight;
int line = topLine + screenLine;
if (line > m_Text.getLineCount()) return -1;
return line;
}
/** Expand/contract all blocks currently on screen */
public void expandPage(boolean state) {
// Get all the information about which part of the text window is
// visible
int topLine = m_Text.getTopIndex();
int lineHeight = m_Text.getLineHeight();
int visibleLines = m_Text.getClientArea().height / lineHeight;
int lastLine = Math.min(m_Text.getLineCount(), m_Text.getTopIndex() + visibleLines);
boolean atBottom = (lastLine == m_Text.getLineCount());
// Start with the first block that starts at topLine or includes
// topLine.
Block topBlock = m_FoldingDoc.getBlockByLineNumber(topLine);
Block bottomBlock = m_FoldingDoc.getBlockByLineNumber(lastLine);
if (topBlock == null) return;
// Stop redrawing while we expand/collapse everything then turn it back
// on
setRedraw(false);
// If the lastLine is after the bottom block, use the last block in the
// document
if (bottomBlock == null)
bottomBlock = m_FoldingDoc.getBlock(m_FoldingDoc.getNumberBlocks() - 1);
int topIndex = topBlock.getIndex();
int bottomIndex = bottomBlock.getIndex();
for (int i = topIndex; i <= bottomIndex; i++) {
Block block = m_FoldingDoc.getBlock(i);
m_FoldingDoc.expandBlock(block, state);
}
// If the selection was set to the bottom before we expanded make sure
// it stays there after the expansion.
if (state && atBottom) scrollBottom();
// Redraw everything
setRedraw(true);
}
protected void paintIcons(PaintEvent e) {
// Check if we've turned off redraws
if (m_DrawingDisabled) return;
GC gc = e.gc;
Rectangle client = m_IconBar.getClientArea();
// Make sure the text control is properly initialized
if (m_Text.getLineHeight() == 0) return;
// Get all the information about which part of the text window is
// visible
int topLine = m_Text.getTopIndex();
int lineHeight = m_Text.getLineHeight();
int visibleLines = m_Text.getClientArea().height / lineHeight;
int lastLine = Math.min(m_Text.getLineCount(), m_Text.getTopIndex() + visibleLines);
// Start with the first block that starts at topLine or includes
// topLine.
Block topBlock = m_FoldingDoc.getBlockByLineNumber(topLine);
int blockCount = m_FoldingDoc.getNumberBlocks();
if (topBlock == null) return;
int blockIndex = topBlock.getIndex();
int outerSize = 9;
int innerSize = 6;
int offset = (outerSize - innerSize) / 2 + 1;
Color gray = m_IconBar.getDisplay().getSystemColor(SWT.COLOR_GRAY);
Color black = m_IconBar.getDisplay().getSystemColor(SWT.COLOR_BLACK);
// Go through each block in turn until we're off the bottom of the
// screen
// or at the end of the list of blocks drawing icons
while (blockIndex != -1 && blockIndex < blockCount) {
Block block = m_FoldingDoc.getBlock(blockIndex);
int line = block.getStart();
// Once we drop off the bottom of the screen we're done
if (line >= lastLine) break;
int pos = line - topLine;
int y = pos * lineHeight + (lineHeight / 2) - (outerSize / 2) - 1;
int x = 1;
boolean expanded = block.isExpanded();
if (block.canExpand()) {
gc.drawRectangle(x, y, x + outerSize, x + outerSize);
// Start with a - sign
int y1 = y + 1 + (outerSize / 2);
gc.drawLine(x + offset, y1, x + offset + innerSize, y1);
if (!expanded) {
// If not expanded turn the - into a +
int x1 = x + 1 + (outerSize / 2);
gc.drawLine(x1, y + offset, x1, y + offset + innerSize);
} else {
// If expanded draw a line to show what is in the expanded
// area
gc.setForeground(gray);
int x1 = x + 1 + (outerSize / 2);
int yTop = y + outerSize + 2;
int yBottom = y + ((block.getSize() - 1) * lineHeight) + (outerSize / 2);
gc.drawLine(x1, yTop, x1, yBottom);
gc.drawLine(x1, yBottom, client.width - 1, yBottom);
gc.setForeground(black);
}
}
blockIndex++;
}
}
