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Add option to reverse the slider's values #39

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MathieuSollier wants to merge 1 commit into from
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Add option to reverse the slider's values #39

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ prop | type | default | description
**formatter** | `Function` | `(v) => v` | A function to re-format values before they are displayed
**handleFormatter** | `Function` | `formatter` | A function to re-format values on the handle/float before they are displayed. Defaults to the same function given to the `formatter` property
**springValues** | `Object` | `{ stiffness: 0.15, damping: 0.4 }` | Svelte spring physics object to change the behaviour of the handle when moving
**reversed** | `Boolean` | `false` | Reverse the values ​​of the slider

### slider events (dispatched)

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17 changes: 9 additions & 8 deletions src/RangePips.svelte
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Expand Up @@ -14,6 +14,7 @@
export let first = undefined;
export let last = undefined;
export let rest = undefined;
export let reversed = undefined;

// formatting props
export let prefix = "";
Expand Down Expand Up @@ -140,12 +141,12 @@
{#if ( all && first !== false ) || first }
<span
class="pip first"
class:selected={isSelected(min)}
class:in-range={inRange(min)}
class:selected={isSelected(reversed ? max : min)}
class:in-range={inRange(reversed ? max : min)}
style="{vertical ? 'top' : 'left'}: 0%;">
{#if all === 'label' || first === 'label'}
<span class="pipVal">
{prefix}{formatter(min)}{suffix}
{prefix}{formatter(reversed ? max : min)}{suffix}
</span>
{/if}
</span>
Expand All @@ -155,12 +156,12 @@
{#if pipVal(i) !== min && pipVal(i) !== max}
<span
class="pip"
class:selected={isSelected(pipVal(i))}
class:selected={isSelected(reversed ? max - pipVal(i) : pipVal(i))}
class:in-range={inRange(pipVal(i))}
style="{vertical ? 'top' : 'left'}: {percentOf(pipVal(i))}%;">
{#if all === 'label' || rest === 'label'}
<span class="pipVal">
{prefix}{formatter(pipVal(i))}{suffix}
{prefix}{formatter(reversed ? max - pipVal(i) : pipVal(i))}{suffix}
</span>
{/if}
</span>
Expand All @@ -170,12 +171,12 @@
{#if ( all && last !== false ) || last}
<span
class="pip last"
class:selected={isSelected(max)}
class:in-range={inRange(max)}
class:selected={isSelected(reversed ? min : max)}
class:in-range={inRange(reversed ? min : max)}
style="{vertical ? 'top' : 'left'}: 100%;">
{#if all === 'label' || last === 'label'}
<span class="pipVal">
{prefix}{formatter(max)}{suffix}
{prefix}{formatter(reversed ? min : max)}{suffix}
</span>
{/if}
</span>
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10 changes: 6 additions & 4 deletions src/RangeSlider.svelte
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Expand Up @@ -22,6 +22,7 @@
export let first = undefined;
export let last = undefined;
export let rest = undefined;
export let reversed = undefined;

// formatting props
export let id = undefined;
Expand Down Expand Up @@ -302,7 +303,7 @@

// if the value has changed, update it
if (values[index] !== value) {
values[index] = value;
values[index] = reversed ? max - value : value;
}

// fire the change event when the handle moves,
Expand Down Expand Up @@ -753,7 +754,7 @@
on:blur={sliderBlurHandle}
on:focus={sliderFocusHandle}
on:keydown={sliderKeydown}
style="{vertical ? 'top' : 'left'}: {$springPositions[index]}%; z-index: {activeHandle === index ? 3 : 2};"
style="{vertical ? 'top' : 'left'}: {reversed ? 100 - $springPositions[index] : $springPositions[index]}%; z-index: {activeHandle === index ? 3 : 2};"
aria-valuemin={range === true && index === 1 ? values[0] : min}
aria-valuemax={range === true && index === 0 ? values[1] : max}
aria-valuenow={value}
Expand All @@ -772,7 +773,7 @@
{#if range}
<span
class="rangeBar"
style="{vertical ? 'top' : 'left'}: {rangeStart($springPositions)}%; {vertical ? 'bottom' : 'right'}:
style="{vertical ? 'top' : 'left'}: {reversed ? 100 - rangeStart($springPositions) : rangeStart($springPositions)}%; {vertical ? 'bottom' : 'right'}:
{rangeEnd($springPositions)}%;" />
{/if}
{#if pips}
Expand All @@ -793,7 +794,8 @@
{formatter}
{focus}
{disabled}
{percentOf} />
{percentOf}
{reversed} />
{/if}
</div>

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8 changes: 6 additions & 2 deletions test/src/App.svelte
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Expand Up @@ -16,6 +16,7 @@
const dayFormatCn = v => { if (v === 6) { return "星期日"; }; return "星期" + numzh.format(v + 1); };

let perc1 = [5];
let perc1Reversed = [5];
let perc2 = [100 - perc1];
$: perc2max = 100 - perc1[0];

Expand Down Expand Up @@ -60,7 +61,9 @@
<RangeSlider vertical range values={[10,30]} pips all="label" {disabled} />
<RangeSlider vertical range="min" values={[10]} pips all />
<RangeSlider vertical range="max" values={[30]} pips />

<RangeSlider vertical range="min" values={[20]} float pips all="label" />
<RangeSlider vertical range="max" values={[20]} float pips all="label" reversed/>

<br>
<RangeSlider id="test-id" springValues={{ stiffness: 0.03, damping: 0.08 }} />
<br>
Expand Down Expand Up @@ -114,9 +117,10 @@


<RangeSlider bind:values={perc1} min={0} max={50} pips all="label" float />
<RangeSlider bind:values={perc1Reversed} min={0} max={50} pips all="label" float reversed/>
<RangeSlider bind:values={perc2} min={0} max={perc2max} pips all="label" float />
<hr>
percent1: {perc1}<br>percent2: {perc2}
percent1: {perc1}<br>percent1 reversed: {perc1Reversed} <br>percent2: {perc2}

<br><br>

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