price handling fixes affecting orderbuild, pairprice, ordershapes, etc

src/components/PairPrice.vue

@@ -38,13 +38,13 @@ const pair = computed(() => {
 function pairPrice(chainId, baseToken, quoteToken, price) {
     if (price === null || price === undefined)
         return null
-    const decimals = baseToken.d - quoteToken.d
+    const decimals = quoteToken.d - baseToken.d
     // console.log('pairPrice', chainId, baseToken, quoteToken, price, decimals)
-    // console.log('adjusted pairPrice', price)
     if (decimals >= 0)
         price /= 10 ** decimals
     else
         price *= 10 ** -decimals
+    // console.log('adjusted pairPrice', price)
     if (inversionPreference(chainId, baseToken, quoteToken))
         price = 1 / price
     // console.log('inverted?', price)

src/components/Status.vue

@@ -97,11 +97,11 @@
                 <line-price class="mx-3" v-if="!t.marketOrder"
                             :base="item.order.tokenIn" :quote="item.order.tokenOut"
                             :b="t.minLine.intercept" :m="t.minLine.slope" :is-min="true"
-                            :show-btn="false"/>
+                            :show-btn="true"/>
                 <line-price class="mx-3" v-if="!t.marketOrder"
                             :base="item.order.tokenIn" :quote="item.order.tokenOut"
                             :b="t.maxLine.intercept" :m="t.maxLine.slope" :is-min="false"
-                            :show-btn="false"/>
+                            :show-btn="true"/>
               </div>
 
             </td>

src/components/chart/ChartOrder.vue

@@ -156,7 +156,7 @@ const maxAmount = computed(()=>{
     return null
   const balance = s.balances[token.a]
   if( !balance )
-    return 0
+    return null
   const divisor = os.amountIsTotal ? 1 : os.tranches
   return balance / 10**token.d / divisor
 })
@@ -165,7 +165,7 @@ const available = computed(()=>{
   return max === null ? '' : `Available: ${maxAmount.value} ${tokenIn.value.s}`
 })
 
-const lastMaxValue = ref(null)
+const lastMaxValue = ref(-1)
 
 function setMax() {
   let amount = maxAmount.value