grafana/public/app/plugins/panel/heatmap/partials/display_editor.html

<div class="editor-row">
  <div class="section gf-form-group">
    <h5 class="section-heading">Colors</h5>
    <div class="gf-form">
      <label class="gf-form-label width-8">Color mode</label>
      <div class="gf-form-select-wrapper width-12">
        <select class="input-small gf-form-input" ng-model="ctrl.panel.color.mode" ng-options="s for s in ctrl.colorModes" ng-change="ctrl.render()"></select>
      </div>
    </div>

    <div ng-show="ctrl.panel.color.mode === 'opacity'">
      <div class="gf-form">
        <label class="gf-form-label width-8">Card Color</label>
        <span class="gf-form-label">
          <spectrum-picker ng-model="ctrl.panel.color.cardColor" ng-change="ctrl.render()" ></spectrum-picker>
        </span>
      </div>
      <div class="gf-form">
        <label class="gf-form-label width-8">Opacity scale</label>
        <div class="gf-form-select-wrapper width-12">
          <select class="input-small gf-form-input" ng-model="ctrl.panel.color.colorScale" ng-options="s for s in ctrl.opacityScales" ng-change="ctrl.render()"></select>
        </div>
      </div>
      <div class="gf-form" ng-if="ctrl.panel.color.colorScale === 'sqrt'">
        <label class="gf-form-label width-8">Exponent</label>
        <input type="number" class="gf-form-input width-8" placeholder="auto" data-placement="right" bs-tooltip="''" ng-model="ctrl.panel.color.exponent" ng-change="ctrl.refresh()" ng-model-onblur>
      </div>
      <div class="gf-form">
        <svg id="heatmap-opacity-legend"
          width="22.7em" height="2em">
        </svg>
      </div>
    </div>

    <div ng-show="ctrl.panel.color.mode === 'color'">
      <div class="gf-form">
        <label class="gf-form-label width-8">Color scheme</label>
        <div class="gf-form-select-wrapper width-12">
          <select class="input-small gf-form-input" ng-model="ctrl.panel.color.colorScheme" ng-options="s.value as s.name for s in ctrl.colorSchemes" ng-change="ctrl.render()"></select>
        </div>
      </div>
      <div class="gf-form">
        <svg id="heatmap-color-legend"
          width="22.7em" height="2em">
        </svg>
      </div>
      <gf-form-switch class="gf-form" label-class="width-10"
        label="Fill background"
        checked="ctrl.panel.color.fillBackground" on-change="ctrl.render()">
      </gf-form-switch>
    </div>
  </div>

  <div class="section gf-form-group">
    <h5 class="section-heading">Cards</h5>
    <div class="gf-form">
      <label class="gf-form-label width-8">Space</label>
      <input type="number" class="gf-form-input width-5" placeholder="auto" data-placement="right" bs-tooltip="''" ng-model="ctrl.panel.cards.cardPadding" ng-change="ctrl.refresh()" ng-model-onblur>
    </div>
    <div class="gf-form">
      <label class="gf-form-label width-8">Round</label>
      <input type="number" class="gf-form-input width-5" placeholder="auto" data-placement="right" bs-tooltip="''" ng-model="ctrl.panel.cards.cardRound" ng-change="ctrl.refresh()" ng-model-onblur>
    </div>
  </div>

  <div class="section gf-form-group">
    <h5 class="section-heading">Tooltip</h5>
    <gf-form-switch class="gf-form" label-class="width-8"
      label="Show tooltip"
      checked="ctrl.panel.tooltip.show" on-change="ctrl.render()">
    </gf-form-switch>
    <div ng-if="ctrl.panel.tooltip.show">
      <gf-form-switch class="gf-form" label-class="width-8"
        label="Highlight cards"
        checked="ctrl.panel.highlightCards" on-change="ctrl.render()">
      </gf-form-switch>
      <gf-form-switch class="gf-form" label-class="width-8"
        label="Series stats"
        checked="ctrl.panel.tooltip.seriesStat" on-change="ctrl.render()">
      </gf-form-switch>
      <gf-form-switch class="gf-form" label-class="width-8"
        label="Histogram"
        checked="ctrl.panel.tooltip.showHistogram" on-change="ctrl.render()">
      </gf-form-switch>
      <div class="gf-form">
        <label class="gf-form-label width-8">Decimals</label>
        <input type="number" class="gf-form-input width-5" placeholder="auto" data-placement="right"
          bs-tooltip="'Max decimal precision for tooltip.'"
          ng-model="ctrl.panel.tooltipDecimals" ng-change="ctrl.render()" ng-model-onblur>
      </div>
    </div>
  </div>
</div>