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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "config.h"
      6 #include "core/animation/TimingInput.h"
      7 
      8 #include "bindings/v8/Dictionary.h"
      9 #include "core/css/parser/BisonCSSParser.h"
     10 #include "core/css/resolver/CSSToStyleMap.h"
     11 
     12 namespace WebCore {
     13 
     14 void TimingInput::setStartDelay(Timing& timing, double startDelay)
     15 {
     16     if (std::isfinite(startDelay))
     17         timing.startDelay = startDelay / 1000;
     18     else
     19         timing.startDelay = Timing::defaults().startDelay;
     20 }
     21 
     22 void TimingInput::setEndDelay(Timing& timing, double endDelay)
     23 {
     24     if (std::isfinite(endDelay))
     25         timing.endDelay = endDelay / 1000;
     26     else
     27         timing.endDelay = Timing::defaults().endDelay;
     28 }
     29 
     30 void TimingInput::setFillMode(Timing& timing, const String& fillMode)
     31 {
     32     if (fillMode == "none") {
     33         timing.fillMode = Timing::FillModeNone;
     34     } else if (fillMode == "backwards") {
     35         timing.fillMode = Timing::FillModeBackwards;
     36     } else if (fillMode == "both") {
     37         timing.fillMode = Timing::FillModeBoth;
     38     } else if (fillMode == "forwards") {
     39         timing.fillMode = Timing::FillModeForwards;
     40     } else {
     41         timing.fillMode = Timing::defaults().fillMode;
     42     }
     43 }
     44 
     45 void TimingInput::setIterationStart(Timing& timing, double iterationStart)
     46 {
     47     if (std::isfinite(iterationStart))
     48         timing.iterationStart = std::max<double>(iterationStart, 0);
     49     else
     50         timing.iterationStart = Timing::defaults().iterationStart;
     51 }
     52 
     53 void TimingInput::setIterationCount(Timing& timing, double iterationCount)
     54 {
     55     if (!std::isnan(iterationCount))
     56         timing.iterationCount = std::max<double>(iterationCount, 0);
     57     else
     58         timing.iterationCount = Timing::defaults().iterationCount;
     59 }
     60 
     61 void TimingInput::setIterationDuration(Timing& timing, double iterationDuration)
     62 {
     63     if (!std::isnan(iterationDuration) && iterationDuration >= 0)
     64         timing.iterationDuration = iterationDuration / 1000;
     65     else
     66         timing.iterationDuration = Timing::defaults().iterationDuration;
     67 }
     68 
     69 void TimingInput::setPlaybackRate(Timing& timing, double playbackRate)
     70 {
     71     if (std::isfinite(playbackRate))
     72         timing.playbackRate = playbackRate;
     73     else
     74         timing.playbackRate = Timing::defaults().playbackRate;
     75 }
     76 
     77 void TimingInput::setPlaybackDirection(Timing& timing, const String& direction)
     78 {
     79     if (direction == "reverse") {
     80         timing.direction = Timing::PlaybackDirectionReverse;
     81     } else if (direction == "alternate") {
     82         timing.direction = Timing::PlaybackDirectionAlternate;
     83     } else if (direction == "alternate-reverse") {
     84         timing.direction = Timing::PlaybackDirectionAlternateReverse;
     85     } else {
     86         timing.direction = Timing::defaults().direction;
     87     }
     88 }
     89 
     90 void TimingInput::setTimingFunction(Timing& timing, const String& timingFunctionString)
     91 {
     92     if (RefPtrWillBeRawPtr<CSSValue> timingFunctionValue = BisonCSSParser::parseAnimationTimingFunctionValue(timingFunctionString))
     93         timing.timingFunction = CSSToStyleMap::mapAnimationTimingFunction(timingFunctionValue.get(), true);
     94     else
     95         timing.timingFunction = Timing::defaults().timingFunction;
     96 }
     97 
     98 Timing TimingInput::convert(const Dictionary& timingInputDictionary)
     99 {
    100     Timing result;
    101 
    102     // FIXME: This method needs to be refactored to handle invalid
    103     // null, NaN, Infinity values better.
    104     // See: http://www.w3.org/TR/WebIDL/#es-double
    105     double startDelay = Timing::defaults().startDelay;
    106     timingInputDictionary.get("delay", startDelay);
    107     setStartDelay(result, startDelay);
    108 
    109     double endDelay = Timing::defaults().endDelay;
    110     timingInputDictionary.get("endDelay", endDelay);
    111     setEndDelay(result, endDelay);
    112 
    113     String fillMode;
    114     timingInputDictionary.get("fill", fillMode);
    115     setFillMode(result, fillMode);
    116 
    117     double iterationStart = Timing::defaults().iterationStart;
    118     timingInputDictionary.get("iterationStart", iterationStart);
    119     setIterationStart(result, iterationStart);
    120 
    121     double iterationCount = Timing::defaults().iterationCount;
    122     timingInputDictionary.get("iterations", iterationCount);
    123     setIterationCount(result, iterationCount);
    124 
    125     double iterationDuration = 0;
    126     if (timingInputDictionary.get("duration", iterationDuration)) {
    127         setIterationDuration(result, iterationDuration);
    128     }
    129 
    130     double playbackRate = Timing::defaults().playbackRate;
    131     timingInputDictionary.get("playbackRate", playbackRate);
    132     setPlaybackRate(result, playbackRate);
    133 
    134     String direction;
    135     timingInputDictionary.get("direction", direction);
    136     setPlaybackDirection(result, direction);
    137 
    138     String timingFunctionString;
    139     timingInputDictionary.get("easing", timingFunctionString);
    140     setTimingFunction(result, timingFunctionString);
    141 
    142     result.assertValid();
    143 
    144     return result;
    145 }
    146 
    147 Timing TimingInput::convert(double duration)
    148 {
    149     Timing result;
    150     setIterationDuration(result, duration);
    151     return result;
    152 }
    153 
    154 } // namespace WebCore
    155