Last change
on this file since 188ee53 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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1 | var packNumber = require('./Number').pack;
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2 | var MATH_FUNCTIONS = {
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3 | 'calc': true,
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4 | 'min': true,
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5 | 'max': true,
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6 | 'clamp': true
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7 | };
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8 | var LENGTH_UNIT = {
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9 | // absolute length units
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10 | 'px': true,
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11 | 'mm': true,
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12 | 'cm': true,
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13 | 'in': true,
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14 | 'pt': true,
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15 | 'pc': true,
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16 |
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17 | // relative length units
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18 | 'em': true,
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19 | 'ex': true,
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20 | 'ch': true,
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21 | 'rem': true,
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22 |
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23 | // viewport-percentage lengths
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24 | 'vh': true,
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25 | 'vw': true,
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26 | 'vmin': true,
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27 | 'vmax': true,
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28 | 'vm': true
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29 | };
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30 |
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31 | module.exports = function compressDimension(node, item) {
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32 | var value = packNumber(node.value, item);
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33 |
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34 | node.value = value;
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35 |
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36 | if (value === '0' && this.declaration !== null && this.atrulePrelude === null) {
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37 | var unit = node.unit.toLowerCase();
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38 |
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39 | // only length values can be compressed
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40 | if (!LENGTH_UNIT.hasOwnProperty(unit)) {
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41 | return;
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42 | }
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43 |
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44 | // issue #362: shouldn't remove unit in -ms-flex since it breaks flex in IE10/11
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45 | // issue #200: shouldn't remove unit in flex since it breaks flex in IE10/11
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46 | if (this.declaration.property === '-ms-flex' ||
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47 | this.declaration.property === 'flex') {
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48 | return;
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49 | }
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50 |
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51 | // issue #222: don't remove units inside calc
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52 | if (this.function && MATH_FUNCTIONS.hasOwnProperty(this.function.name)) {
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53 | return;
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54 | }
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55 |
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56 | item.data = {
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57 | type: 'Number',
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58 | loc: node.loc,
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59 | value: value
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60 | };
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61 | }
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62 | };
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