Remove Polymer 0.5.

third_party/polymer/components-chromium/paper-ripple/paper-ripple-extracted.js

-
-
-  (function() {
-
-    var waveMaxRadius = 150;
-    //
-    // INK EQUATIONS
-    //
-    function waveRadiusFn(touchDownMs, touchUpMs, anim) {
-      // Convert from ms to s
-      var touchDown = touchDownMs / 1000;
-      var touchUp = touchUpMs / 1000;
-      var totalElapsed = touchDown + touchUp;
-      var ww = anim.width, hh = anim.height;
-      // use diagonal size of container to avoid floating point math sadness
-      var waveRadius = Math.min(Math.sqrt(ww * ww + hh * hh), waveMaxRadius) * 1.1 + 5;
-      var duration = 1.1 - .2 * (waveRadius / waveMaxRadius);
-      var tt = (totalElapsed / duration);
-
-      var size = waveRadius * (1 - Math.pow(80, -tt));
-      return Math.abs(size);
-    }
-
-    function waveOpacityFn(td, tu, anim) {
-      // Convert from ms to s.
-      var touchDown = td / 1000;
-      var touchUp = tu / 1000;
-      var totalElapsed = touchDown + touchUp;
-
-      if (tu <= 0) {  // before touch up
-        return anim.initialOpacity;
-      }
-      return Math.max(0, anim.initialOpacity - touchUp * anim.opacityDecayVelocity);
-    }
-
-    function waveOuterOpacityFn(td, tu, anim) {
-      // Convert from ms to s.
-      var touchDown = td / 1000;
-      var touchUp = tu / 1000;
-
-      // Linear increase in background opacity, capped at the opacity
-      // of the wavefront (waveOpacity).
-      var outerOpacity = touchDown * 0.3;
-      var waveOpacity = waveOpacityFn(td, tu, anim);
-      return Math.max(0, Math.min(outerOpacity, waveOpacity));
-    }
-
-    // Determines whether the wave should be completely removed.
-    function waveDidFinish(wave, radius, anim) {
-      var waveOpacity = waveOpacityFn(wave.tDown, wave.tUp, anim);
-
-      // If the wave opacity is 0 and the radius exceeds the bounds
-      // of the element, then this is finished.
-      return waveOpacity < 0.01 && radius >= Math.min(wave.maxRadius, waveMaxRadius);
-    };
-
-    function waveAtMaximum(wave, radius, anim) {
-      var waveOpacity = waveOpacityFn(wave.tDown, wave.tUp, anim);
-
-      return waveOpacity >= anim.initialOpacity && radius >= Math.min(wave.maxRadius, waveMaxRadius);
-    }
-
-    //
-    // DRAWING
-    //
-    function drawRipple(ctx, x, y, radius, innerAlpha, outerAlpha) {
-      // Only animate opacity and transform
-      if (outerAlpha !== undefined) {
-        ctx.bg.style.opacity = outerAlpha;
-      }
-      ctx.wave.style.opacity = innerAlpha;
-
-      var s = radius / (ctx.containerSize / 2);
-      var dx = x - (ctx.containerWidth / 2);
-      var dy = y - (ctx.containerHeight / 2);
-
-      ctx.wc.style.webkitTransform = 'translate3d(' + dx + 'px,' + dy + 'px,0)';
-      ctx.wc.style.transform = 'translate3d(' + dx + 'px,' + dy + 'px,0)';
-
-      // 2d transform for safari because of border-radius and overflow:hidden clipping bug.
-      // https://bugs.webkit.org/show_bug.cgi?id=98538
-      ctx.wave.style.webkitTransform = 'scale(' + s + ',' + s + ')';
-      ctx.wave.style.transform = 'scale3d(' + s + ',' + s + ',1)';
-    }
-
-    //
-    // SETUP
-    //
-    function createWave(elem) {
-      var elementStyle = window.getComputedStyle(elem);
-      var fgColor = elementStyle.color;
-
-      var inner = document.createElement('div');
-      inner.style.backgroundColor = fgColor;
-      inner.classList.add('wave');
-
-      var outer = document.createElement('div');
-      outer.classList.add('wave-container');
-      outer.appendChild(inner);
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-      var container = elem.$.waves;
-      container.appendChild(outer);
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-      elem.$.bg.style.backgroundColor = fgColor;
-
-      var wave = {
-        bg: elem.$.bg,
-        wc: outer,
-        wave: inner,
-        waveColor: fgColor,
-        maxRadius: 0,
-        isMouseDown: false,
-        mouseDownStart: 0.0,
-        mouseUpStart: 0.0,
-        tDown: 0,
-        tUp: 0
-      };
-      return wave;
-    }
-
-    function removeWaveFromScope(scope, wave) {
-      if (scope.waves) {
-        var pos = scope.waves.indexOf(wave);
-        scope.waves.splice(pos, 1);
-        // FIXME cache nodes
-        wave.wc.remove();
-      }
-    };
-
-    // Shortcuts.
-    var pow = Math.pow;
-    var now = Date.now;
-    if (window.performance && performance.now) {
-      now = performance.now.bind(performance);
-    }
-
-    function cssColorWithAlpha(cssColor, alpha) {
-        var parts = cssColor.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
-        if (typeof alpha == 'undefined') {
-            alpha = 1;
-        }
-        if (!parts) {
-          return 'rgba(255, 255, 255, ' + alpha + ')';
-        }
-        return 'rgba(' + parts[1] + ', ' + parts[2] + ', ' + parts[3] + ', ' + alpha + ')';
-    }
-
-    function dist(p1, p2) {
-      return Math.sqrt(pow(p1.x - p2.x, 2) + pow(p1.y - p2.y, 2));
-    }
-
-    function distanceFromPointToFurthestCorner(point, size) {
-      var tl_d = dist(point, {x: 0, y: 0});
-      var tr_d = dist(point, {x: size.w, y: 0});
-      var bl_d = dist(point, {x: 0, y: size.h});
-      var br_d = dist(point, {x: size.w, y: size.h});
-      return Math.max(tl_d, tr_d, bl_d, br_d);
-    }
-
-    Polymer('paper-ripple', {
-
-      /**
-       * The initial opacity set on the wave.
-       *
-       * @attribute initialOpacity
-       * @type number
-       * @default 0.25
-       */
-      initialOpacity: 0.25,
-
-      /**
-       * How fast (opacity per second) the wave fades out.
-       *
-       * @attribute opacityDecayVelocity
-       * @type number
-       * @default 0.8
-       */
-      opacityDecayVelocity: 0.8,
-
-      backgroundFill: true,
-      pixelDensity: 2,
-
-      eventDelegates: {
-        down: 'downAction',
-        up: 'upAction'
-      },
-
-      ready: function() {
-        this.waves = [];
-      },
-
-      downAction: function(e) {
-        var wave = createWave(this);
-
-        this.cancelled = false;
-        wave.isMouseDown = true;
-        wave.tDown = 0.0;
-        wave.tUp = 0.0;
-        wave.mouseUpStart = 0.0;
-        wave.mouseDownStart = now();
-
-        var rect = this.getBoundingClientRect();
-        var width = rect.width;
-        var height = rect.height;
-        var touchX = e.x - rect.left;
-        var touchY = e.y - rect.top;
-
-        wave.startPosition = {x:touchX, y:touchY};
-
-        if (this.classList.contains("recenteringTouch")) {
-          wave.endPosition = {x: width / 2,  y: height / 2};
-          wave.slideDistance = dist(wave.startPosition, wave.endPosition);
-        }
-        wave.containerSize = Math.max(width, height);
-        wave.containerWidth = width;
-        wave.containerHeight = height;
-        wave.maxRadius = distanceFromPointToFurthestCorner(wave.startPosition, {w: width, h: height});
-
-        // The wave is circular so constrain its container to 1:1
-        wave.wc.style.top = (wave.containerHeight - wave.containerSize) / 2 + 'px';
-        wave.wc.style.left = (wave.containerWidth - wave.containerSize) / 2 + 'px';
-        wave.wc.style.width = wave.containerSize + 'px';
-        wave.wc.style.height = wave.containerSize + 'px';
-
-        this.waves.push(wave);
-
-        if (!this._loop) {
-          this._loop = this.animate.bind(this, {
-            width: width,
-            height: height
-          });
-          requestAnimationFrame(this._loop);
-        }
-        // else there is already a rAF
-      },
-
-      upAction: function() {
-        for (var i = 0; i < this.waves.length; i++) {
-          // Declare the next wave that has mouse down to be mouse'ed up.
-          var wave = this.waves[i];
-          if (wave.isMouseDown) {
-            wave.isMouseDown = false
-            wave.mouseUpStart = now();
-            wave.mouseDownStart = 0;
-            wave.tUp = 0.0;
-            break;
-          }
-        }
-        this._loop && requestAnimationFrame(this._loop);
-      },
-
-      cancel: function() {
-        this.cancelled = true;
-      },
-
-      animate: function(ctx) {
-        var shouldRenderNextFrame = false;
-
-        var deleteTheseWaves = [];
-        // The oldest wave's touch down duration
-        var longestTouchDownDuration = 0;
-        var longestTouchUpDuration = 0;
-        // Save the last known wave color
-        var lastWaveColor = null;
-        // wave animation values
-        var anim = {
-          initialOpacity: this.initialOpacity,
-          opacityDecayVelocity: this.opacityDecayVelocity,
-          height: ctx.height,
-          width: ctx.width
-        }
-
-        for (var i = 0; i < this.waves.length; i++) {
-          var wave = this.waves[i];
-
-          if (wave.mouseDownStart > 0) {
-            wave.tDown = now() - wave.mouseDownStart;
-          }
-          if (wave.mouseUpStart > 0) {
-            wave.tUp = now() - wave.mouseUpStart;
-          }
-
-          // Determine how long the touch has been up or down.
-          var tUp = wave.tUp;
-          var tDown = wave.tDown;
-          longestTouchDownDuration = Math.max(longestTouchDownDuration, tDown);
-          longestTouchUpDuration = Math.max(longestTouchUpDuration, tUp);
-
-          // Obtain the instantenous size and alpha of the ripple.
-          var radius = waveRadiusFn(tDown, tUp, anim);
-          var waveAlpha =  waveOpacityFn(tDown, tUp, anim);
-          var waveColor = cssColorWithAlpha(wave.waveColor, waveAlpha);
-          lastWaveColor = wave.waveColor;
-
-          // Position of the ripple.
-          var x = wave.startPosition.x;
-          var y = wave.startPosition.y;
-
-          // Ripple gravitational pull to the center of the canvas.
-          if (wave.endPosition) {
-
-            // This translates from the origin to the center of the view  based on the max dimension of
-            var translateFraction = Math.min(1, radius / wave.containerSize * 2 / Math.sqrt(2) );
-
-            x += translateFraction * (wave.endPosition.x - wave.startPosition.x);
-            y += translateFraction * (wave.endPosition.y - wave.startPosition.y);
-          }
-
-          // If we do a background fill fade too, work out the correct color.
-          var bgFillColor = null;
-          if (this.backgroundFill) {
-            var bgFillAlpha = waveOuterOpacityFn(tDown, tUp, anim);
-            bgFillColor = cssColorWithAlpha(wave.waveColor, bgFillAlpha);
-          }
-
-          // Draw the ripple.
-          drawRipple(wave, x, y, radius, waveAlpha, bgFillAlpha);
-
-          // Determine whether there is any more rendering to be done.
-          var maximumWave = waveAtMaximum(wave, radius, anim);
-          var waveDissipated = waveDidFinish(wave, radius, anim);
-          var shouldKeepWave = !waveDissipated || maximumWave;
-          // keep rendering dissipating wave when at maximum radius on upAction
-          var shouldRenderWaveAgain = wave.mouseUpStart ? !waveDissipated : !maximumWave;
-          shouldRenderNextFrame = shouldRenderNextFrame || shouldRenderWaveAgain;
-          if (!shouldKeepWave || this.cancelled) {
-            deleteTheseWaves.push(wave);
-          }
-       }
-
-        if (shouldRenderNextFrame) {
-          requestAnimationFrame(this._loop);
-        }
-
-        for (var i = 0; i < deleteTheseWaves.length; ++i) {
-          var wave = deleteTheseWaves[i];
-          removeWaveFromScope(this, wave);
-        }
-
-        if (!this.waves.length && this._loop) {
-          // clear the background color
-          this.$.bg.style.backgroundColor = null;
-          this._loop = null;
-          this.fire('core-transitionend');
-        }
-      }
-
-    });
-
-  })();
-