--- /dev/null
+/*
+ * Copyright (c) 2006 Intel Corporation
+ * All rights reserved.
+ *
+ * This file is distributed under the terms in the attached INTEL-LICENSE
+ * file. If you do not find these files, copies can be found by writing to
+ * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA,
+ * 94704. Attention: Intel License Inquiry.
+ */
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.font.*;
+import java.awt.geom.*;
+import java.util.*;
+
+/* Panel for drawing mote-data graphs */
+class Graph extends JPanel
+{
+ final static int BORDER_LEFT = 40;
+ final static int BORDER_RIGHT = 0;
+ final static int BORDER_TOP = 10;
+ final static int BORDER_BOTTOM = 10;
+
+ final static int TICK_SPACING = 40;
+ final static int MAX_TICKS = 16;
+ final static int TICK_WIDTH = 10;
+
+ final static int MIN_WIDTH = 50;
+
+ int gx0, gx1, gy0, gy1; // graph bounds
+ int scale = 2; // gx1 - gx0 == MIN_WIDTH << scale
+ Window parent;
+
+ /* Graph to screen coordinate conversion support */
+ int height, width;
+ double xscale, yscale;
+
+ void updateConversion() {
+ height = getHeight() - BORDER_TOP - BORDER_BOTTOM;
+ width = getWidth() - BORDER_LEFT - BORDER_RIGHT;
+ if (height < 1)
+ height = 1;
+ if (width < 1)
+ width = 1;
+ xscale = (double)width / (gx1 - gx0 + 1);
+ yscale = (double)height / (gy1 - gy0 + 1);
+ }
+
+ Graphics makeClip(Graphics g) {
+ return g.create(BORDER_LEFT, BORDER_TOP, width, height);
+ }
+
+ // Note that these do not include the border offset!
+ int screenX(int gx) {
+ return (int)(xscale * (gx - gx0) + 0.5);
+ }
+
+ int screenY(int gy) {
+ return (int)(height - yscale * (gy - gy0));
+ }
+
+ int graphX(int sx) {
+ return (int)(sx / xscale + gx0 + 0.5);
+ }
+
+ Graph(Window parent) {
+ this.parent = parent;
+ gy0 = 0; gy1 = 0xffff;
+ gx0 = 0; gx1 = MIN_WIDTH << scale;
+ }
+
+ void rightDrawString(Graphics2D g, String s, int x, int y) {
+ TextLayout layout =
+ new TextLayout(s, parent.smallFont, g.getFontRenderContext());
+ Rectangle2D bounds = layout.getBounds();
+ layout.draw(g, x - (float)bounds.getWidth(), y + (float)bounds.getHeight() / 2);
+ }
+
+ protected void paintComponent(Graphics g) {
+ Graphics2D g2d = (Graphics2D)g;
+
+ /* Repaint. Synchronize on Oscilloscope to avoid data changing.
+ Simply clear panel, draw Y axis and all the mote graphs. */
+ synchronized (parent.parent) {
+ updateConversion();
+ g2d.setColor(Color.BLACK);
+ g2d.fillRect(0, 0, getWidth(), getHeight());
+ drawYAxis(g2d);
+
+ Graphics clipped = makeClip(g2d);
+ int count = parent.moteListModel.size();
+ for (int i = 0; i < count; i++) {
+ clipped.setColor(parent.moteListModel.getColor(i));
+ drawGraph(clipped, parent.moteListModel.get(i));
+ }
+ }
+ }
+
+ /* Draw the Y-axis */
+ protected void drawYAxis(Graphics2D g) {
+ int axis_x = BORDER_LEFT - 1;
+ int height = getHeight() - BORDER_BOTTOM - BORDER_TOP;
+
+ g.setColor(Color.WHITE);
+ g.drawLine(axis_x, BORDER_TOP, axis_x, BORDER_TOP + height - 1);
+
+ /* Draw a reasonable set of tick marks */
+ int nTicks = height / TICK_SPACING;
+ if (nTicks > MAX_TICKS)
+ nTicks = MAX_TICKS;
+
+ int tickInterval = (gy1 - gy0 + 1) / nTicks;
+ if (tickInterval == 0)
+ tickInterval = 1;
+
+ /* Tick interval should be of the family A * 10^B,
+ where A = 1, 2 * or 5. We tend more to rounding A up, to reduce
+ rather than increase the number of ticks. */
+ int B = (int)(Math.log(tickInterval) / Math.log(10));
+ int A = (int)(tickInterval / Math.pow(10, B) + 0.5);
+ if (A > 2) A = 5;
+ else if (A > 5) A = 10;
+
+ tickInterval = A * (int)Math.pow(10, B);
+
+ /* Ticks are printed at multiples of tickInterval */
+ int tick = ((gy0 + tickInterval - 1) / tickInterval) * tickInterval;
+ while (tick <= gy1) {
+ int stick = screenY(tick) + BORDER_TOP;
+ rightDrawString(g, "" + tick, axis_x - TICK_WIDTH / 2 - 2, stick);
+ g.drawLine(axis_x - TICK_WIDTH / 2, stick,
+ axis_x - TICK_WIDTH / 2 + TICK_WIDTH, stick);
+ tick += tickInterval;
+ }
+
+ }
+
+ /* Draw graph for mote nodeId */
+ protected void drawGraph(Graphics g, int nodeId) {
+ SingleGraph sg = new SingleGraph(g, nodeId);
+
+ if (gx1 - gx0 >= width) // More points than pixels-iterate by pixel
+ for (int sx = 0; sx < width; sx++)
+ sg.nextPoint(g, graphX(sx), sx);
+ else // Less points than pixel-iterate by points
+ for (int gx = gx0; gx <= gx1; gx++)
+ sg.nextPoint(g, gx, screenX(gx));
+ }
+
+ /* Inner class to simplify drawing a graph. Simplify initialise it, then
+ feed it the X screen and graph coordinates, from left to right. */
+ private class SingleGraph {
+ int lastsx, lastsy, nodeId;
+
+ /* Start drawing the graph mote id */
+ SingleGraph(Graphics g, int id) {
+ nodeId = id;
+ lastsx = -1;
+ lastsy = -1;
+ }
+
+ /* Next point in mote's graph is at x value gx, screen coordinate sx */
+ void nextPoint(Graphics g, int gx, int sx) {
+ int gy = parent.parent.data.getData(nodeId, gx);
+ int sy = -1;
+
+ if (gy >= 0) { // Ignore missing values
+ double rsy = height - yscale * (gy - gy0);
+
+ // Ignore problem values
+ if (rsy >= -1e6 && rsy <= 1e6)
+ sy = (int)(rsy + 0.5);
+
+ if (lastsy >= 0 && sy >= 0)
+ g.drawLine(lastsx, lastsy, sx, sy);
+ }
+ lastsx = sx;
+ lastsy = sy;
+ }
+ }
+
+ /* Update X-axis range in GUI */
+ void updateXLabel() {
+ parent.xLabel.setText("X: " + gx0 + " - " + gx1);
+ }
+
+ /* Ensure that graph is nicely positioned on screen. max is the largest
+ sample number received from any mote. */
+ private void recenter(int max) {
+ // New data will show up at the 3/4 point
+ // The 2nd term ensures that gx1 will be >= max
+ int scrollby = ((gx1 - gx0) >> 2) + (max - gx1);
+ gx0 += scrollby;
+ gx1 += scrollby;
+ if (gx0 < 0) { // don't bother showing negative sample numbers
+ gx1 -= gx0;
+ gx0 = 0;
+ }
+ updateXLabel();
+ }
+
+ /* New data received. Redraw graph, scrolling if necessary */
+ void newData() {
+ int max = parent.parent.data.maxX();
+
+ if (max > gx1 || max < gx0) // time to scroll
+ recenter(max);
+ repaint();
+ }
+
+ /* User set the X-axis scale to newScale */
+ void setScale(int newScale) {
+ gx1 = gx0 + (MIN_WIDTH << newScale);
+ scale = newScale;
+ recenter(parent.parent.data.maxX());
+ repaint();
+ }
+
+ /* User attempted to set Y-axis range to newy0..newy1. Refuse bogus
+ values (return false), or accept, redraw and return true. */
+ boolean setYAxis(int newy0, int newy1) {
+ if (newy0 >= newy1 || newy0 < 0 || newy0 > 65535 ||
+ newy1 < 0 || newy1 > 65535)
+ return false;
+ gy0 = newy0;
+ gy1 = newy1;
+ repaint();
+ return true;
+ }
+}
projects / tinyos-2.x.git / blobdiff