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Add panButton option #268

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8c14e65
add panButton option
RickyTB Dec 31, 2021
1924687
dist files added
RickyTB Jun 19, 2023
c7112ac
transform as css variable
RickyTB Jun 19, 2023
05149b7
transform extracted to a css variable
RickyTB Jun 19, 2023
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12 changes: 12 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -166,6 +166,18 @@ panzoom(element, {
});
```

## Change pan mouse button

When using a mouse, the default behaviour is clicking with the left button and drag to
pan, you can specify which mouse button you prefer with the option `panButton`, the
possible options are `left` or `middle`.

``` js
panzoom(element, {
panButton: 'left'
});
```

## Zoom Speed

You can adjust how fast it zooms, by passing optional `zoomSpeed` argument:
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44 changes: 26 additions & 18 deletions dist/panzoom.js
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,7 @@ function createPanZoom(domElement, options) {
var speed = typeof options.zoomSpeed === 'number' ? options.zoomSpeed : defaultZoomSpeed;
var transformOrigin = parseTransformOrigin(options.transformOrigin);
var textSelection = options.enableTextSelection ? fakeTextSelectorInterceptor : domTextSelectionInterceptor;
var panButton = options.panButton || 'left';

validateBounds(bounds);

Expand Down Expand Up @@ -788,11 +789,20 @@ function createPanZoom(domElement, options) {
e.stopPropagation();
return false;
}
// for IE, left click == 1
// for Firefox, left click == 0
var isLeftButton =
(e.button === 1 && window.event !== null) || e.button === 0;
if (!isLeftButton) return;

if (panButton === 'left') {
// for IE, left click == 1
// for Firefox, left click == 0
var isLeftButton =
(e.button === 1 && window.event !== null) || e.button === 0;
if (!isLeftButton) return;
}

if (panButton === 'middle') {
var isMiddleButton =
(e.button === 3 && window.event !== null) || e.button === 1;
if (!isMiddleButton) return;
}

smoothScroll.cancel();

Expand Down Expand Up @@ -1280,10 +1290,9 @@ function makeDomController(domElement, options) {
function applyTransform(transform) {
// TODO: Should we cache this?
domElement.style.transformOrigin = '0 0 0';
domElement.style.transform = 'matrix(' +
transform.scale + ', 0, 0, ' +
transform.scale + ', ' +
transform.x + ', ' + transform.y + ')';
domElement.style.setProperty('transform', 'matrix(var(--pz-transform))');
domElement.style.setProperty('--pz-transform',
`${transform.scale}, 0, 0, ${transform.scale}, ${transform.x}, ${transform.y}`);
}
}

Expand Down Expand Up @@ -1327,12 +1336,12 @@ function makeSvgController(svgElement, options) {
}

function getBBox() {
var bbox = svgElement.getBBox();
var boundingBox = svgElement.getBBox();
return {
left: bbox.x,
top: bbox.y,
width: bbox.width,
height: bbox.height,
left: boundingBox.x,
top: boundingBox.y,
width: boundingBox.width,
height: boundingBox.height,
};
}

Expand All @@ -1358,13 +1367,12 @@ function makeSvgController(svgElement, options) {
transform.y = screenCTM.f;
transform.scale = screenCTM.a;
owner.removeAttributeNS(null, 'viewBox');
svgElement.style.setProperty('transform', 'matrix(var(--pz-transform))');
}

function applyTransform(transform) {
svgElement.setAttribute('transform', 'matrix(' +
transform.scale + ' 0 0 ' +
transform.scale + ' ' +
transform.x + ' ' + transform.y + ')');
svgElement.style.setProperty('--pz-transform',
`${transform.scale}, 0, 0, ${transform.scale}, ${transform.x}, ${transform.y}`);
}
}

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2 changes: 1 addition & 1 deletion dist/panzoom.min.js
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1 change: 1 addition & 0 deletions index.d.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ declare module "panzoom" {
enableTextSelection?: boolean;
disableKeyboardInteraction?: boolean;
transformOrigin?: TransformOrigin;
panButton?: 'left' | 'middle';
}

export interface PanZoom {
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20 changes: 15 additions & 5 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,7 @@ function createPanZoom(domElement, options) {
var speed = typeof options.zoomSpeed === 'number' ? options.zoomSpeed : defaultZoomSpeed;
var transformOrigin = parseTransformOrigin(options.transformOrigin);
var textSelection = options.enableTextSelection ? fakeTextSelectorInterceptor : domTextSelectionInterceptor;
var panButton = options.panButton || 'left';

validateBounds(bounds);

Expand Down Expand Up @@ -787,11 +788,20 @@ function createPanZoom(domElement, options) {
e.stopPropagation();
return false;
}
// for IE, left click == 1
// for Firefox, left click == 0
var isLeftButton =
(e.button === 1 && window.event !== null) || e.button === 0;
if (!isLeftButton) return;

if (panButton === 'left') {
// for IE, left click == 1
// for Firefox, left click == 0
var isLeftButton =
(e.button === 1 && window.event !== null) || e.button === 0;
if (!isLeftButton) return;
}

if (panButton === 'middle') {
var isMiddleButton =
(e.button === 3 && window.event !== null) || e.button === 1;
if (!isMiddleButton) return;
}

smoothScroll.cancel();

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7 changes: 3 additions & 4 deletions lib/makeDomController.js
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Original file line number Diff line number Diff line change
Expand Up @@ -40,10 +40,9 @@ function makeDomController(domElement, options) {
function applyTransform(transform) {
// TODO: Should we cache this?
domElement.style.transformOrigin = '0 0 0';
domElement.style.transform = 'matrix(' +
transform.scale + ', 0, 0, ' +
transform.scale + ', ' +
transform.x + ', ' + transform.y + ')';
domElement.style.setProperty('transform', 'matrix(var(--pz-transform))');
domElement.style.setProperty('--pz-transform',
`${transform.scale}, 0, 0, ${transform.scale}, ${transform.x}, ${transform.y}`);
}
}

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7 changes: 3 additions & 4 deletions lib/makeSvgController.js
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Original file line number Diff line number Diff line change
Expand Up @@ -64,13 +64,12 @@ function makeSvgController(svgElement, options) {
transform.y = screenCTM.f;
transform.scale = screenCTM.a;
owner.removeAttributeNS(null, 'viewBox');
svgElement.style.setProperty('transform', 'matrix(var(--pz-transform))');
}

function applyTransform(transform) {
svgElement.setAttribute('transform', 'matrix(' +
transform.scale + ' 0 0 ' +
transform.scale + ' ' +
transform.x + ' ' + transform.y + ')');
svgElement.style.setProperty('--pz-transform',
`${transform.scale}, 0, 0, ${transform.scale}, ${transform.x}, ${transform.y}`);
}
}

Expand Down