assertEquals(2, highlightRow);
assertEquals('2: Y: 3 Z: 4', Util.getLegend());
};
+
+/**
+ * Test that underlay callback is called even when there are no series,
+ * and that the y axis ranges are not NaN.
+ */
+CallbackTestCase.prototype.underlayCallback_noSeries = function() {
+ var called = false;
+ var yMin, yMax;
+
+ var callback = function(canvas, area, g) {
+ called = true;
+ yMin = g.yAxisRange(0)[0];
+ yMax = g.yAxisRange(0)[1];
+ };
+
+ var graph = document.getElementById("graph");
+ var g = new Dygraph(graph, "\n", {
+ underlayCallback: callback
+ });
+
+ assertTrue(called);
+ assertFalse(isNaN(yMin));
+ assertFalse(isNaN(yMax));
+};
+
+/**
+ * Test that underlay callback receives the correct y-axis range.
+ */
+CallbackTestCase.prototype.underlayCallback_yAxisRange = function() {
+ var called = false;
+ var yMin, yMax;
+
+ var callback = function(canvas, area, g) {
+ yMin = g.yAxisRange(0)[0];
+ yMax = g.yAxisRange(0)[1];
+ };
+
+ var graph = document.getElementById("graph");
+ var g = new Dygraph(graph, "\n", {
+ valueRange: [0,10],
+ underlayCallback: callback
+ });
+
+ assertEquals(0, yMin));
+ assertEquals(10, yMax));
+};
var includeZero = this.attributes_.getForAxis("includeZero", i);
series = this.attributes_.seriesForAxis(i);
+ // Add some padding. This supports two Y padding operation modes:
+ //
+ // - backwards compatible (yRangePad not set):
+ // 10% padding for automatic Y ranges, but not for user-supplied
+ // ranges, and move a close-to-zero edge to zero except if
+ // avoidMinZero is set, since drawing at the edge results in
+ // invisible lines. Unfortunately lines drawn at the edge of a
+ // user-supplied range will still be invisible. If logscale is
+ // set, add a variable amount of padding at the top but
+ // none at the bottom.
+ //
+ // - new-style (yRangePad set by the user):
+ // always add the specified Y padding.
+ //
+ ypadCompat = true;
+ ypad = 0.1; // add 10%
+ if (this.attr_('yRangePad') !== null) {
+ ypadCompat = false;
+ // Convert pixel padding to ratio
+ ypad = this.attr_('yRangePad') / this.plotter_.area.h;
+ }
+
if (series.length === 0) {
// If no series are defined or visible then use a reasonable default
axis.extremeRange = [0, 1];
}
}
- // Add some padding. This supports two Y padding operation modes:
- //
- // - backwards compatible (yRangePad not set):
- // 10% padding for automatic Y ranges, but not for user-supplied
- // ranges, and move a close-to-zero edge to zero except if
- // avoidMinZero is set, since drawing at the edge results in
- // invisible lines. Unfortunately lines drawn at the edge of a
- // user-supplied range will still be invisible. If logscale is
- // set, add a variable amount of padding at the top but
- // none at the bottom.
- //
- // - new-style (yRangePad set by the user):
- // always add the specified Y padding.
- //
- ypadCompat = true;
- ypad = 0.1; // add 10%
- if (this.attr_('yRangePad') !== null) {
- ypadCompat = false;
- // Convert pixel padding to ratio
- ypad = this.attr_('yRangePad') / this.plotter_.area.h;
- }
-
var maxAxisY, minAxisY;
if (logscale) {
if (ypadCompat) {