private AutoCloseable configGC(final GC gc) {
final int lineStyle = gc.getLineStyle();
final int alpha = gc.getAlpha();
final int[] lineDash = gc.getLineDash();
final Color foreground = gc.getForeground();
final Color background = gc.getBackground();
gc.setForeground(this.indentGuide.getColor(styledText));
gc.setBackground(styledText.getBackground());
gc.setAlpha(this.indentGuide.getTransparency());
gc.setLineStyle(SWT.LINE_CUSTOM);
gc.setLineDash(new int[] {1, 2});
return new AutoCloseable() {
@Override
public void close() throws Exception {
gc.setForeground(foreground);
gc.setBackground(background);
gc.setAlpha(alpha);
gc.setLineStyle(lineStyle);
gc.setLineDash(lineDash);
}
};
}
@Test
public void testRestoresState() {
dispatcher.dispatch();
assertEquals(0, gc.getAlpha());
assertEquals(0, gc.getLineWidth());
assertNull(gc.getForeground());
}
@Override
public void paint(GC gc) {
CanvasViewInfo lastRoot = mViewHierarchy.getRoot();
if (lastRoot != null) {
gc.setForeground(mOutlineColor);
gc.setLineStyle(SwtDrawingStyle.OUTLINE.getLineStyle());
int oldAlpha = gc.getAlpha();
gc.setAlpha(SwtDrawingStyle.OUTLINE.getStrokeAlpha());
drawOutline(gc, lastRoot);
gc.setAlpha(oldAlpha);
}
}
/**
* Draw characters in view range.
*
* @param gc
* @param x
* @param y
* @param w
* @param h
*/
private void handleDrawRequest(GC gc, int x, int y, int w, int h) {
int startLine = fTextWidget.getLineIndex(y);
int endLine = fTextWidget.getLineIndex(y + h - 1);
if (startLine <= endLine && startLine < fTextWidget.getLineCount()) {
if (fIsAdvancedGraphicsPresent) {
int alpha = gc.getAlpha();
gc.setAlpha(100);
drawLineRange(gc, startLine, endLine, x, w);
gc.setAlpha(alpha);
} else drawLineRange(gc, startLine, endLine, x, w);
}
}
@Override
public void paint(GC gc) {
if (mHoverRect != null) {
// Translate the hover rectangle (in canvas coordinates) to control
// coordinates
int x = mHScale.translate(mHoverRect.x);
int y = mVScale.translate(mHoverRect.y);
int w = mHScale.scale(mHoverRect.width);
int h = mVScale.scale(mHoverRect.height);
boolean hoverIsSelected = false;
List<SelectionItem> selections = mCanvas.getSelectionManager().getSelections();
for (SelectionItem item : selections) {
if (mHoverRect.equals(item.getViewInfo().getSelectionRect())) {
hoverIsSelected = true;
break;
}
}
Color stroke = hoverIsSelected ? mHoverSelectStrokeColor : mHoverStrokeColor;
Color fill = hoverIsSelected ? mHoverSelectFillColor : mHoverFillColor;
if (stroke != null) {
int oldAlpha = gc.getAlpha();
gc.setForeground(stroke);
gc.setLineStyle(hoverIsSelected ? HOVER_SELECTION.getLineStyle() : HOVER.getLineStyle());
gc.setAlpha(hoverIsSelected ? HOVER_SELECTION.getStrokeAlpha() : HOVER.getStrokeAlpha());
gc.drawRectangle(x, y, w, h);
gc.setAlpha(oldAlpha);
}
if (fill != null) {
int oldAlpha = gc.getAlpha();
gc.setAlpha(hoverIsSelected ? HOVER_SELECTION.getFillAlpha() : HOVER.getFillAlpha());
gc.setBackground(fill);
gc.fillRectangle(x, y, w, h);
gc.setAlpha(oldAlpha);
}
}
}
@Override
public boolean paint(GC gc, int pass) {
initColors();
Map<Area, Double> fill;
synchronized (this) {
fill = new HashMap<>(trafficDensity.getRoadSegmentFill());
}
int oldAlpha = gc.getAlpha();
gc.setAlpha(ALPHA);
for (Map.Entry<Area, Double> entry : fill.entrySet()) {
int colorIdx = Math.min((int) Math.round(entry.getValue() * COLOR_STEPS), COLOR_STEPS - 1);
if (colorIdx > 0) {
gc.setBackground(colors[colorIdx]);
gc.fillRectangle(entry.getKey().getDrawArea());
}
}
gc.setAlpha(oldAlpha);
mustRedraw.set(false);
return false;
}
private void setAlpha(GC gc, double fade) {
if (gc.getAlpha() == fade) return;
if (fade >= 255) gc.setAlpha(255);
else gc.setAlpha((int) fade);
}
private void paintCanvas(GC gc, int px, int py, int pw, int ph) {
if (canvas == null || canvas.isDisposed()) return;
Rectangle r = canvas.getBounds();
Color b1 = canvas.getBackground();
gc.setAntialias(SWT.ON);
gc.setTextAntialias(SWT.ON);
// Draw selection background:
if (isSelected()) {
gc.setBackground(selectedBackground);
gc.fillRoundRectangle(0, 0, r.width, r.height, CORNER, CORNER);
} else if (showingHover) {
int oldAlpha = gc.getAlpha();
gc.setAlpha(96 * oldAlpha / 255);
gc.setBackground(selectedBackground);
gc.fillRoundRectangle(0, 0, r.width, r.height, CORNER, CORNER);
gc.setAlpha(oldAlpha);
}
// Draw edit indicator:
if (showingEditorHover) {
int oldAlpha = gc.getAlpha();
gc.setAlpha(192 * oldAlpha / 255);
gc.setBackground(b1);
gc.fillRoundRectangle(
r.width / 2 + HOVER_SHRINK_H,
HOVER_SHRINK_V,
r.width / 2 - HOVER_SHRINK_H - HOVER_SHRINK_H,
r.height - HOVER_SHRINK_V - HOVER_SHRINK_V,
HOVER_CORNER,
HOVER_CORNER);
gc.setAlpha(oldAlpha);
//
// Control ec = editor == null ? null : editor.getControl();
// if (ec != null && !ec.isDisposed()) {
// Rectangle eb = ec.getBounds();
// gc.setAlpha(192);
// gc.setBackground(b1);
// gc.fillRoundRectangle(eb.x, eb.y, eb.width, eb.height, 8, 8);
// gc.setAlpha(255);
// }
}
// Draw property name label:
gc.setForeground(canvas.getForeground());
gc.setFont(canvas.getFont());
if (nameLayout != null && !nameLayout.isDisposed()) {
Rectangle nb = nameLayout.getBounds();
nameLayout.draw(gc, MARGIN_H, (r.height - nb.height) / 2);
}
// Draw property value repsentating image:
int right = r.width - MARGIN_H;
if (valueImage != null && !valueImage.isDisposed()) {
Rectangle ib = valueImage.getBounds();
int iw, ih;
if (ib.height > r.height) {
ih = r.height;
iw = ib.width * r.height / ib.height;
} else {
ih = ib.height;
iw = ib.width;
}
gc.drawImage(valueImage, 0, 0, ib.width, ib.height, right - iw, (r.height - ih) / 2, iw, ih);
right = right - iw - 3;
}
// Draw property value label:
if (valueLayout != null && !valueLayout.isDisposed()) {
Rectangle vb = valueLayout.getBounds();
valueLayout.draw(gc, right - vb.width, (r.height - vb.height) / 2);
}
}
/**
* Paints the preview at the given x/y position
*
* @param gc the graphics context to paint it into
* @param x the x coordinate to paint the preview at
* @param y the y coordinate to paint the preview at
*/
void paint(GC gc, int x, int y) {
mTitleHeight = paintTitle(gc, x, y, true /*showFile*/);
y += mTitleHeight;
y += 2;
int width = getWidth();
int height = getHeight();
if (mThumbnail != null && mError == null) {
gc.drawImage(mThumbnail, x, y);
if (mActive) {
int oldWidth = gc.getLineWidth();
gc.setLineWidth(3);
gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION));
gc.drawRectangle(x - 1, y - 1, width + 2, height + 2);
gc.setLineWidth(oldWidth);
}
} else if (mError != null) {
if (mThumbnail != null) {
gc.drawImage(mThumbnail, x, y);
} else {
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BORDER));
gc.drawRectangle(x, y, width, height);
}
gc.setClipping(x, y, width, height);
Image icon = IconFactory.getInstance().getIcon("renderError"); // $NON-NLS-1$
ImageData data = icon.getImageData();
int prevAlpha = gc.getAlpha();
int alpha = 96;
if (mThumbnail != null) {
alpha -= 32;
}
gc.setAlpha(alpha);
gc.drawImage(icon, x + (width - data.width) / 2, y + (height - data.height) / 2);
String msg = mError;
Density density = mConfiguration.getDensity();
if (density == Density.TV || density == Density.LOW) {
msg =
"Broken rendering library; unsupported DPI. Try using the SDK manager "
+ "to get updated layout libraries.";
}
int charWidth = gc.getFontMetrics().getAverageCharWidth();
int charsPerLine = (width - 10) / charWidth;
msg = SdkUtils.wrap(msg, charsPerLine, null);
gc.setAlpha(255);
gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_BLACK));
gc.drawText(msg, x + 5, y + HEADER_HEIGHT, true);
gc.setAlpha(prevAlpha);
gc.setClipping((Region) null);
} else {
gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BORDER));
gc.drawRectangle(x, y, width, height);
Image icon = IconFactory.getInstance().getIcon("refreshPreview"); // $NON-NLS-1$
ImageData data = icon.getImageData();
int prevAlpha = gc.getAlpha();
gc.setAlpha(96);
gc.drawImage(icon, x + (width - data.width) / 2, y + (height - data.height) / 2);
gc.setAlpha(prevAlpha);
}
if (mActive) {
int left = x;
int prevAlpha = gc.getAlpha();
gc.setAlpha(208);
Color bg = mCanvas.getDisplay().getSystemColor(SWT.COLOR_WHITE);
gc.setBackground(bg);
gc.fillRectangle(left, y, x + width - left, HEADER_HEIGHT);
gc.setAlpha(prevAlpha);
y += 2;
// Paint icons
gc.drawImage(CLOSE_ICON, left, y);
left += CLOSE_ICON_WIDTH;
gc.drawImage(ZOOM_IN_ICON, left, y);
left += ZOOM_IN_ICON_WIDTH;
gc.drawImage(ZOOM_OUT_ICON, left, y);
left += ZOOM_OUT_ICON_WIDTH;
gc.drawImage(EDIT_ICON, left, y);
left += EDIT_ICON_WIDTH;
}
}
