/**
* Creates a new painter for the given text viewer.
*
* @param textViewer the text viewer the painter should be attached to
*/
public WhitespaceCharacterPainter(ITextViewer textViewer) {
super();
fTextViewer = textViewer;
fTextWidget = textViewer.getTextWidget();
GC gc = new GC(fTextWidget);
gc.setAdvanced(true);
fIsAdvancedGraphicsPresent = gc.getAdvanced();
gc.dispose();
}
public void paintControl(PaintEvent e) {
if (!resizing) {
GC gc = e.gc;
gc.setAdvanced(true);
gc.setAntialias(SWT.ON);
for (Channel channel : channelArray) {
channel.paint(e.gc);
}
}
}
void paint(PaintEvent e) {
GC gc = e.gc;
Point size = comp.getSize();
if (curveColor == null) curveColor = e.display.getSystemColor(SWT.COLOR_BLACK);
int h = size.y;
int[] simpleCurve = new int[] {0, h - 1, 1, h - 1, 2, h - 2, 2, 1, 3, 0};
// draw border
gc.setForeground(curveColor);
gc.setAdvanced(true);
if (gc.getAdvanced()) {
gc.setAntialias(SWT.ON);
}
gc.drawPolyline(simpleCurve);
Rectangle bounds = ((Control) e.widget).getBounds();
bounds.x = bounds.y = 0;
Region r = new Region();
r.add(bounds);
int[] simpleCurveClose = new int[simpleCurve.length + 4];
System.arraycopy(simpleCurve, 0, simpleCurveClose, 0, simpleCurve.length);
int index = simpleCurve.length;
simpleCurveClose[index++] = bounds.width;
simpleCurveClose[index++] = 0;
simpleCurveClose[index++] = bounds.width;
simpleCurveClose[index++] = bounds.height;
r.subtract(simpleCurveClose);
Region clipping = new Region();
gc.getClipping(clipping);
r.intersect(clipping);
gc.setClipping(r);
Image b = toolParent.getBackgroundImage();
if (b != null && !b.isDisposed()) gc.drawImage(b, 0, 0);
r.dispose();
clipping.dispose();
// // gc.fillRectangle(bounds);
// Rectangle mappedBounds = e.display.map(comp, comp.getParent(),
// bounds);
// ((Composite) toolParent).drawBackground(gc, bounds.x, bounds.y,
// bounds.width,
// bounds.height, mappedBounds.x, mappedBounds.y);
}
private static Image takeScreenshot(final Display display, final Shell parent) {
/* Take the screen shot */
GC gc = new GC(parent);
Image image = new Image(display, parent.getClientArea());
gc.copyArea(image, 0, 0);
GC gcImage = new GC(image);
gcImage.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gcImage.setAdvanced(true);
Region region = parent.getRegion();
data = image.getImageData();
if (region != null) {
int height = image.getBounds().height;
int width = image.getBounds().width;
byte[] alphaData = new byte[height * width];
int currentPosition = 0;
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++) {
if (!region.contains(j, i)) {
gcImage.drawPoint(j, i);
alphaData[currentPosition] = 0;
} else {
alphaData[currentPosition] = (byte) 255;
}
currentPosition++;
}
}
data.alphaData = alphaData;
}
image.dispose();
gcImage.dispose();
gc.dispose();
return new Image(display, data);
}
protected void paintControl(PaintEvent e) {
long start = System.currentTimeMillis();
for (int c = 0; c < chan.length; c++) {
// if (chan[c].tailSize <= 0) {
// chan[c].stack.popNegate(0);
// continue;
// }
// Go calculate the line
Object[] result = calculate(c);
int[] l1 = (int[]) result[0];
int[] l2 = (int[]) result[1];
PositionPolyLine(l1);
PositionPolyLine(l2);
// System.out.print(System.currentTimeMillis() - start + "-");
// Draw it
GC gc = e.gc;
gc.setForeground(getForeground(c));
gc.setAdvanced(true);
gc.setAntialias(SWT.ON);
gc.setLineWidth(getLineWidth(c));
// Fade tail
if (isFade(c)) {
gc.setAlpha(0);
double fade = 0;
double fadeOutStep = (double) 125 / (double) ((getTailSize(c) * (getTailFade(c)) / 100));
for (int i = 0; i < l1.length - 4; ) {
fade += (fadeOutStep / 2);
setAlpha(gc, fade);
gc.drawLine(l1[i], l1[i + 1], l1[i + 2], l1[i + 3]);
i += 2;
}
for (int i = 0; i < l2.length - 4; ) {
fade += (fadeOutStep / 2);
setAlpha(gc, fade);
gc.drawLine(l2[i], l2[i + 1], l2[i + 2], l2[i + 3]);
i += 2;
}
} else {
long time = System.nanoTime();
gc.drawPolyline(l1);
gc.drawPolyline(l2);
// System.out.println(System.nanoTime() - time + " nanoseconds");
}
// Connects the head with the tail
if (isConnect(c)
&& !isFade(c)
&& chan[c].originalTailSize == TAILSIZE_MAX
&& l1.length > 0
&& l2.length > 0) {
gc.drawLine(l2[l2.length - 2], l2[l2.length - 1], l1[0], l1[1]);
}
}
// System.out.println(System.currentTimeMillis() - start + " milliseconds for all channels");
}
protected void highlightDifferences(GC gc) {
// if the differencer is null then we are currently
// in the middle of a content update, skip this paint
// request
if (mergeViewer.getDifferencer() == null) {
return;
}
gc.setAdvanced(true);
gc.setAntialias(SWT.ON);
Tree tree = getTree();
List<TreeDifference> differences = mergeViewer.getDifferencer().getLeftDifferences();
if (mergeViewer.getLeftViewer() != this && mergeViewer.getAncestorTree() != this) {
differences = mergeViewer.getDifferencer().getRightDifferences();
}
for (TreeDifference difference : differences) {
if (differenceIsGraphical(difference)) {
// we do not include graphical differences
// at this time
continue;
}
gc.setForeground(
getMergeViewer()
.getColor(
PlatformUI.getWorkbench().getDisplay(),
getMergeViewer().getStrokeColor(difference)));
TreeItem item = getItemForDifference(difference);
if (item == null || item.isDisposed()) {
continue;
}
Rectangle highlightBounds =
buildHighlightRectangle(
item, difference.getIncludeChildren() && item.getExpanded(), gc, false, true);
Rectangle itemBounds = buildHighlightRectangle(item, false, gc, false, true);
boolean itemMatchesDifference = difference.getElement().equals(item.getData());
if (!itemMatchesDifference && !(item.getData() instanceof EmptyElement)) {
gc.setLineDash(new int[] {3});
gc.setLineStyle(SWT.LINE_CUSTOM);
} else {
gc.setLineStyle(SWT.LINE_SOLID);
}
gc.drawRoundRectangle(
highlightBounds.x,
highlightBounds.y,
highlightBounds.width,
highlightBounds.height,
5,
5);
if (mergeViewer.getLeftViewer() == this) {
gc.drawLine(
highlightBounds.x + highlightBounds.width,
highlightBounds.y + (itemBounds.height / 2),
tree.getClientArea().x + tree.getClientArea().width,
highlightBounds.y + (itemBounds.height / 2));
} else {
gc.drawLine(
highlightBounds.x,
highlightBounds.y + (itemBounds.height / 2),
tree.getClientArea().x,
highlightBounds.y + (itemBounds.height / 2));
}
gc.setLineStyle(SWT.LINE_SOLID);
}
}
public static /* synchronized */ Image resize(
final Display display,
final Image srcImage,
final int newWidth,
final int newHeight,
final int antialias,
final int interpolation,
final Rotation exifRotation) {
if (srcImage == null) {
return null;
}
final Rectangle originalImageBounds = srcImage.getBounds();
final int originalWidth = originalImageBounds.width;
final int originalHeight = originalImageBounds.height;
final int srcWidth = originalWidth;
final int srcHeight = originalHeight;
final int destWidth = newWidth;
final int destHeight = newHeight;
int imgWidth = newWidth;
int imgHeight = newHeight;
// OSX is rotating the image automatically
boolean isNoAutoRotate = UI.IS_OSX == false;
isNoAutoRotate |= _isRotateImageAutomatically == false;
if (isNoAutoRotate) {
if (exifRotation == Rotation.CW_90 || exifRotation == Rotation.CW_270) {
// swap width/height
imgWidth = newHeight;
imgHeight = newWidth;
}
}
final Image scaledImage = new Image(display, imgWidth, imgHeight);
final GC gc = new GC(scaledImage);
Transform transformation = null;
try {
gc.setAdvanced(true);
gc.setAntialias(antialias);
gc.setInterpolation(interpolation);
// gc.setAntialias(SWT.ON);
// gc.setInterpolation(SWT.LOW);
int destX = 0;
int destY = 0;
if (exifRotation != null && isNoAutoRotate) {
final int imgWidth2 = imgWidth / 2;
final int imgHeight2 = imgHeight / 2;
transformation = new Transform(display);
transformation.translate(imgWidth2, imgHeight2);
if (exifRotation == Rotation.CW_90) {
transformation.rotate(90);
destX = -imgHeight2;
destY = -imgWidth2;
} else if (exifRotation == Rotation.CW_180) {
// this case is not yet tested
transformation.rotate(180);
destX = -imgWidth2;
destY = -imgHeight2;
} else if (exifRotation == Rotation.CW_270) {
transformation.rotate(270);
destX = -imgHeight2;
destY = -imgWidth2;
}
gc.setTransform(transformation);
}
gc.drawImage(
srcImage, //
0,
0,
srcWidth,
srcHeight,
//
destX,
destY,
destWidth,
destHeight);
} finally {
// ensure resources are disposed when an error occures
gc.dispose();
if (transformation != null) {
transformation.dispose();
}
}
return scaledImage;
}
