add rounding tip option

lnbits/extensions/tpos/templates/tpos/index.html

@@ -139,8 +139,12 @@
           input-debounce="0"
           new-value-mode="add-unique"
           label="Tip % Options (hit enter to add values)"
-          ><q-tooltip>Hit enter to add values</q-tooltip></q-select
+          ><q-tooltip>Hit enter to add values</q-tooltip>
-        >
+          <template v-slot:hint>
+            You can leave this blank. A default rounding option is available
+            (round amount to a value)
+          </template>
+        </q-select>
         <div class="row q-mt-lg">
           <q-btn
             unelevated

lnbits/extensions/tpos/templates/tpos/tpos.html

@@ -17,7 +17,6 @@
           <h5 class="q-mt-none q-mb-sm">
             {% raw %}{{ fsat }}{% endraw %} <small>sat</small>
           </h5>
-          <p>{% raw %}{{ parseFloat(roundToSugestion) }}{% endraw %}</p>
         </div>
       </div>
     </q-page-sticky>
@@ -232,9 +231,9 @@
             rounded
             color="primary"
             label="Round"
-            ></q-btn
+          ></q-btn>
-          >          
           <q-input
+            class="q-my-lg"
             ref="inputRounding"
             v-if="rounding"
             filled
@@ -243,14 +242,14 @@
             hint="Rounded amount"
           >
             <template v-slot:append>
-          <q-icon name="send" @click="processTipSelection((1 - (amount/tipRounding))*100)" />
+              <q-icon name="send" @click="calculatePercent" />
             </template>
           </q-input>
         </div>
-        <div class="text-center q-mb-xl">
-          <p><a @click="processTipSelection(0)"> No, thanks</a></p>
-        </div>
         <div class="row q-mt-lg">
+          <q-btn flat color="primary" @click="processTipSelection(0)"
+            >No, thanks</q-btn
+          >
           <q-btn v-close-popup flat color="grey" class="q-ml-auto">Close</q-btn>
         </div>
       </q-card>
@@ -445,6 +444,18 @@
         this.tipRounding = this.roundToSugestion
         this.$nextTick(() => this.$refs.inputRounding.focus())
       },
+      calculatePercent() {
+        let change = ((this.tipRounding - this.amount) / this.amount) * 100
+        if (change < 0) {
+          this.$q.notify({
+            type: 'warning',
+            message: 'Value must be greater than initial amount'
+          })
+          this.tipRounding = this.roundToSugestion
+          return
+        }
+        this.processTipSelection(change)
+      },
       closeInvoiceDialog: function () {
         this.stack = []
         this.tipAmount = 0.0
@@ -644,7 +655,7 @@
           : JSON.parse('{{ tpos.tip_options }}')
 
       if ('{{ tpos.tip_wallet }}') {
-        this.tip_options.push("Round")
+        this.tip_options.push('Round')
       }
       setInterval(function () {
         getRates()