Examples with DeferredItem org.eclipse.tracecompass.internal.tmf.ui.widgets.timegraph.TimeGraphRender.DeferredItem used on opensource projects

Example 1 with DeferredItem

use of org.eclipse.tracecompass.internal.tmf.ui.widgets.timegraph.TimeGraphRender.DeferredItem in project tracecompass by tracecompass.

the class TimeGraphControl method drawState.

/**
 * Draw the state (color fill)
 *
 * @param colors
 *            Color scheme
 * @param event
 *            Time event for which we're drawing the state
 * @param rect
 *            The state rectangle
 * @param gc
 *            Graphics context
 * @param selected
 *            Is this time event currently selected (so it appears
 *            highlighted)
 * @param timeSelected
 *            Is the timestamp currently selected
 * @return true if the state was drawn
 */
protected boolean drawState(TimeGraphColorScheme colors, @NonNull ITimeEvent event, Rectangle rect, GC gc, boolean selected, boolean timeSelected) {
    StyleManager styleManager = getStyleManager();
    OutputElementStyle elementStyle = getElementStyle(event);
    if (elementStyle == null) {
        return false;
    }
    boolean transparent = elementStyle.getParentKey() == null && elementStyle.getStyleValues().isEmpty();
    boolean visible = rect.width <= 0 ? false : true;
    rect.width = Math.max(1, rect.width);
    Float heightFactor = styleManager.getFactorStyle(elementStyle, StyleProperties.HEIGHT);
    heightFactor = (heightFactor != null) ? Math.max(0.0f, Math.min(1.0f, heightFactor)) : DEFAULT_STATE_WIDTH;
    int height = 0;
    if (heightFactor != 0.0f && rect.height != 0) {
        height = Math.max(1, (int) (rect.height * heightFactor));
    }
    Rectangle drawRect = new Rectangle(rect.x, rect.y + ((rect.height - height) / 2), rect.width, height);
    Color black = TimeGraphRender.getColor(BLACK.toInt());
    gc.setForeground(black);
    List<DeferredItem> states = fCurrentDeferredEntry.getItems();
    if (transparent) {
        if (visible) {
            // Avoid overlapping transparent states
            int x = Math.max(fLastTransparentX, drawRect.x);
            drawRect.width = drawRect.x + drawRect.width - x;
            if (drawRect.width > 0) {
                // Draw transparent background
                RGBAColor bgColor = fTransparentGrayColor;
                DeferredItem deferredItem = new DeferredTransparentState(drawRect, bgColor);
                if (states.isEmpty() || !states.get(states.size() - 1).getBounds().intersects(drawRect)) {
                    states.add(deferredItem);
                    deferredItem.add(new PostDrawEvent(event, drawRect));
                }
                fLastTransparentX = Math.max(fLastTransparentX, drawRect.x + drawRect.width);
            } else {
                // clamp it to 0, just in case
                drawRect.width = 0;
            }
            if (drawRect.width <= 2) {
                // Draw point over state
                addPoint(fPoints, rect.x, rect.y - 2);
                if (drawRect.width == 2) {
                    addPoint(fPoints, rect.x + 1, rect.y - 2);
                }
            }
        } else {
            addPoint(fPoints, rect.x, rect.y - 2);
        }
        return false;
    }
    int arc = Math.min(drawRect.height + 1, drawRect.width) / 2;
    RGBAColor rgba = styleManager.getColorStyle(elementStyle, StyleProperties.BACKGROUND_COLOR);
    @NonNull RGBAColor bgColor = (rgba != null) ? rgba : BLACK;
    boolean reallySelected = timeSelected && selected;
    // fill all rect area
    boolean draw = visible || fBlendSubPixelEvents;
    DeferredItem last = null;
    if (draw) {
        if (!states.isEmpty()) {
            DeferredItem state = states.get(states.size() - 1);
            while ((state instanceof DeferredTransparentState) && (state.getBounds().x == drawRect.x)) {
                states.remove(states.size() - 1);
                state = states.isEmpty() ? null : states.get(states.size() - 1);
            }
        }
        RGBAColor borderColor = BLACK;
        int lineWidth = DeferredItem.NO_BORDER;
        Object borderStyle = styleManager.getStyle(elementStyle, StyleProperties.BORDER_STYLE);
        boolean hasBorders = borderStyle != null && !BorderStyle.NONE.equals(borderStyle);
        if (hasBorders) {
            Object borderWidth = styleManager.getStyle(elementStyle, StyleProperties.BORDER_WIDTH);
            lineWidth = 1;
            if (borderWidth instanceof Integer) {
                lineWidth = (int) borderWidth;
            }
            borderColor = styleManager.getColorStyle(elementStyle, StyleProperties.BORDER_COLOR);
            if (borderColor == null) {
                borderColor = BLACK;
            }
        }
        /*
             * This has been tested in Linux and Windows, results may vary. The
             * rounded rectangle is not noticeable for adjacent states of the
             * same color until width=6 (arc=3) with antialiasing, or width=8
             * (arc=4) without antialiasing.
             *
             * In other words, only draw rounded rectangles if the arc is
             * noticeable.
             */
        if (arc >= 2) {
            last = new DeferredState(drawRect, bgColor, Objects.requireNonNull(borderColor), arc, lineWidth, fLabelsVisible ? event.getLabel() : null);
            states.add(last);
        } else {
            DeferredTinyState tinyCandidate = new DeferredTinyState(drawRect, bgColor, Objects.requireNonNull(borderColor), lineWidth);
            boolean skipState = false;
            if (!states.isEmpty()) {
                DeferredItem prev = states.get(states.size() - 1);
                if (prev instanceof DeferredTinyState) {
                    DeferredTinyState tinyState = (DeferredTinyState) prev;
                    if (fBlendSubPixelEvents) {
                        skipState = tinyState.squash(tinyCandidate);
                    } else if (tinyState.extend(tinyCandidate)) {
                        skipState = true;
                    }
                }
            }
            if (!skipState) {
                states.add(tinyCandidate);
            }
            last = tinyCandidate;
        }
    }
    if (reallySelected) {
        fSelectedRectangles.add(drawRect);
    }
    if (!visible) {
        addPoint(fPoints, rect.x, rect.y - 2);
    }
    if (visible && !Boolean.TRUE.equals(styleManager.getStyle(elementStyle, ITimeEventStyleStrings.annotated())) && last != null) {
        last.add(new PostDrawEvent(event, drawRect));
    }
    return visible && !event.isPropertyActive(IFilterProperty.DIMMED);
}