File: region_selection.html

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file content (41 lines) | stat: -rw-r--r-- 1,046 bytes parent folder | download 
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<style>
  #highlightImgContainer {
    display: none;
  }

  #regionSelectionCanvas {
    background: transparent;
    left: 0;
    position: absolute;
    top: 0;
  }

  /* Add a scrim, initially transparent, so that it can fade in when the
   * user starts selecting. */
  :host([border-glow-enabled]) #regionSelectionCanvas {
    opacity: 0;
    transition: opacity 166ms cubic-bezier(0.3, 0, 1, 1);
  }

  :host([border-glow-enabled][is-selecting]) #regionSelectionCanvas {
    /* 30% scrim */
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
  }

  :host([border-glow-enabled][has-selected]) #regionSelectionCanvas {
    /* 20% scrim */
    background: rgba(0, 0, 0, 0.1);
    opacity: 1;
  }
</style>
<canvas
  id="regionSelectionCanvas"
  height="[[canvasPhysicalHeight]]"
  width="[[canvasPhysicalWidth]]"
  style$="height: [[canvasHeight]]px; width: [[canvasWidth]]px;"
></canvas>
<!-- Provides image source for canvas; element is not displayed. -->
<div id="highlightImgContainer">
  <canvas id="highlightImgCanvas"></canvas>
</div>