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Merge pull request #1441 from nelsonn3c/feature/flip

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Adds flip/mirror slides feature.
This commit is contained in:
Ian Gilman 2018-06-07 09:48:59 -07:00 committed by GitHub
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12 changed files with 454 additions and 25 deletions
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22
src/drawer.js
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@ -500,6 +500,10 @@ $.Drawer.prototype = {
if ( this.viewport.degrees !== 0 ) {
this._offsetForRotation({degrees: this.viewport.degrees});
} else{
if(this.viewer.viewport.flipped) {
this._flip();
}
}
if (tiledImage.getRotation(true) % 360 !== 0) {
this._offsetForRotation({
@ -620,10 +624,28 @@ $.Drawer.prototype = {
context.save();
context.translate(point.x, point.y);
if(this.viewer.viewport.flipped){
context.rotate(Math.PI / 180 * -options.degrees);
context.scale(-1, 1);
} else{
context.rotate(Math.PI / 180 * options.degrees);
}
context.translate(-point.x, -point.y);
},
// private
_flip: function(options) {
options = options || {};
var point = options.point ?
options.point.times($.pixelDensityRatio) :
this.getCanvasCenter();
var context = this._getContext(options.useSketch);
context.translate(point.x, 0);
context.scale(-1, 1);
context.translate(-point.x, 0);
},
// private
_restoreRotationChanges: function(useSketch) {
var context = this._getContext(useSketch);

41
src/navigator.js
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@ -208,12 +208,14 @@ $.Navigator = function( options ){
var degrees = options.viewer.viewport ?
options.viewer.viewport.getRotation() :
options.viewer.degrees || 0;
rotate(degrees);
options.viewer.addHandler("rotate", function (args) {
rotate(args.degrees);
});
}
// Remove the base class' (Viewer's) innerTracker and replace it with our own
this.innerTracker.destroy();
this.innerTracker = new $.MouseTracker({
@ -271,6 +273,22 @@ $.extend( $.Navigator.prototype, $.EventSource.prototype, $.Viewer.prototype, /*
}
}
},
/**
/* Flip navigator element
* @param {Boolean} state - Flip state to set.
*/
setFlip: function(state) {
this.viewport.setFlip(state);
this.setDisplayTransform(this.viewer.viewport.getFlip() ? "scale(-1,1)" : "scale(1,1)");
return this;
},
setDisplayTransform: function(rule) {
setElementTransform(this.displayRegion, rule);
setElementTransform(this.canvas, rule);
setElementTransform(this.element, rule);
},
/**
* Used to update the navigator minimap's viewport rectangle when a change in the viewer's viewport occurs.
@ -399,6 +417,7 @@ $.extend( $.Navigator.prototype, $.EventSource.prototype, $.Viewer.prototype, /*
}
});
/**
* @private
* @inner
@ -406,6 +425,9 @@ $.extend( $.Navigator.prototype, $.EventSource.prototype, $.Viewer.prototype, /*
*/
function onCanvasClick( event ) {
if ( event.quick && this.viewer.viewport ) {
if(this.viewer.viewport.flipped){
event.position.x = this.viewport.getContainerSize().x - event.position.x;
}
this.viewer.viewport.panTo(this.viewport.pointFromPixel(event.position));
this.viewer.viewport.applyConstraints();
}
@ -424,6 +446,11 @@ function onCanvasDrag( event ) {
if( !this.panVertical ){
event.delta.y = 0;
}
if(this.viewer.viewport.flipped){
event.delta.x = -event.delta.x;
}
this.viewer.viewport.panBy(
this.viewport.deltaPointsFromPixels(
event.delta
@ -488,11 +515,15 @@ function onCanvasScroll( event ) {
* @param {Number} degrees
*/
function _setTransformRotate( element, degrees ) {
element.style.webkitTransform = "rotate(" + degrees + "deg)";
element.style.mozTransform = "rotate(" + degrees + "deg)";
element.style.msTransform = "rotate(" + degrees + "deg)";
element.style.oTransform = "rotate(" + degrees + "deg)";
element.style.transform = "rotate(" + degrees + "deg)";
setElementTransform(element, "rotate(" + degrees + "deg)");
}
function setElementTransform( element, rule ) {
element.style.webkitTransform = rule;
element.style.mozTransform = rule;
element.style.msTransform = rule;
element.style.oTransform = rule;
element.style.transform = rule;
}
}( OpenSeadragon ));

23
src/openseadragon.js
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@ -206,6 +206,9 @@
* @property {Number} [degrees=0]
* Initial rotation.
*
* @property {Boolean} [flipped=false]
* Initial flip state.
*
* @property {Number} [minZoomLevel=null]
*
* @property {Number} [maxZoomLevel=null]
@ -478,6 +481,10 @@
* Note: {@link OpenSeadragon.Options.showNavigationControl} is overriding
* this setting when set to false.
*
* @property {Boolean} [showFlipControl=false]
* If true then the flip controls will be displayed as part of the
* standard controls.
*
* @property {Boolean} [showSequenceControl=true]
* If sequenceMode is true, then provide buttons for navigating forward and
* backward through the images.
@ -688,6 +695,12 @@
* @property {String} rotateright.HOVER
* @property {String} rotateright.DOWN
*
* @property {Object} flip - Images for the flip button.
* @property {String} flip.REST
* @property {String} flip.GROUP
* @property {String} flip.HOVER
* @property {String} flip.DOWN
*
* @property {Object} previous - Images for the previous button.
* @property {String} previous.REST
* @property {String} previous.GROUP
@ -1120,6 +1133,7 @@ function OpenSeadragon( options ){
showHomeControl: true, //HOME
showFullPageControl: true, //FULL
showRotationControl: false, //ROTATION
showFlipControl: false, //FLIP
controlsFadeDelay: 2000, //ZOOM/HOME/FULL/SEQUENCE
controlsFadeLength: 1500, //ZOOM/HOME/FULL/SEQUENCE
mouseNavEnabled: true, //GENERAL MOUSE INTERACTIVITY
@ -1141,6 +1155,9 @@ function OpenSeadragon( options ){
// INITIAL ROTATION
degrees: 0,
// INITIAL FLIP STATE
flipped: false,
// APPEARANCE
opacity: 1,
preload: false,
@ -1209,6 +1226,12 @@ function OpenSeadragon( options ){
HOVER: 'rotateright_hover.png',
DOWN: 'rotateright_pressed.png'
},
flip: { // Flip icon designed by Yaroslav Samoylov from the Noun Project and modified by Nelson Campos ncampos@criteriamarathon.com, https://thenounproject.com/term/flip/136289/
REST: 'flip_rest.png',
GROUP: 'flip_grouphover.png',
HOVER: 'flip_hover.png',
DOWN: 'flip_pressed.png'
},
previous: {
REST: 'previous_rest.png',
GROUP: 'previous_grouphover.png',

3
src/strings.js
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@ -57,7 +57,8 @@ var I18N = {
NextPage: "Next page",
PreviousPage: "Previous page",
RotateLeft: "Rotate left",
RotateRight: "Rotate right"
RotateRight: "Rotate right",
Flip: "Flip Horizontally"
}
};

8
src/tiledimage.js
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@ -1886,6 +1886,10 @@ function drawTiles( tiledImage, lastDrawn ) {
degrees: tiledImage.viewport.degrees,
useSketch: useSketch
});
} else {
if(tiledImage._drawer.viewer.viewport.flipped) {
tiledImage._drawer._flip({});
}
}
if (tiledImage.getRotation(true) % 360 !== 0) {
tiledImage._drawer._offsetForRotation({
@ -1969,6 +1973,10 @@ function drawTiles( tiledImage, lastDrawn ) {
}
if (tiledImage.viewport.degrees !== 0) {
tiledImage._drawer._restoreRotationChanges(useSketch);
} else{
if(tiledImage._drawer.viewer.viewport.flipped) {
tiledImage._drawer._flip({});
}
}
}

75
src/viewer.js
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@ -367,6 +367,7 @@ $.Viewer = function( options ) {
maxZoomLevel: this.maxZoomLevel,
viewer: this,
degrees: this.degrees,
flipped: this.flipped,
navigatorRotate: this.navigatorRotate,
homeFillsViewer: this.homeFillsViewer,
margins: this.viewportMargins
@ -1674,6 +1675,7 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
onFullScreenHandler = $.delegate( this, onFullScreen ),
onRotateLeftHandler = $.delegate( this, onRotateLeft ),
onRotateRightHandler = $.delegate( this, onRotateRight ),
onFlipHandler = $.delegate( this, onFlip),
onFocusHandler = $.delegate( this, onFocus ),
onBlurHandler = $.delegate( this, onBlur ),
navImages = this.navImages,
@ -1685,7 +1687,8 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
if( this.zoomInButton || this.zoomOutButton ||
this.homeButton || this.fullPageButton ||
this.rotateLeftButton || this.rotateRightButton ) {
this.rotateLeftButton || this.rotateRightButton ||
this.flipButton ) {
//if we are binding to custom buttons then layout and
//grouping is the responsibility of the page author
useGroup = false;
@ -1789,7 +1792,22 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
onFocus: onFocusHandler,
onBlur: onBlurHandler
}));
}
if ( this.showFlipControl ) {
buttons.push( this.flipButton = new $.Button({
element: this.flipButton ? $.getElement( this.flipButton ) : null,
clickTimeThreshold: this.clickTimeThreshold,
clickDistThreshold: this.clickDistThreshold,
tooltip: $.getString( "Tooltips.Flip" ),
srcRest: resolveUrl( this.prefixUrl, navImages.flip.REST ),
srcGroup: resolveUrl( this.prefixUrl, navImages.flip.GROUP ),
srcHover: resolveUrl( this.prefixUrl, navImages.flip.HOVER ),
srcDown: resolveUrl( this.prefixUrl, navImages.flip.DOWN ),
onRelease: onFlipHandler,
onFocus: onFocusHandler,
onBlur: onBlurHandler
}));
}
if ( useGroup ) {
@ -2602,6 +2620,25 @@ function onCanvasKeyPress( event ) {
this.viewport.applyConstraints();
}
return false;
case 114: //r - 90 degrees clockwise rotation
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.degrees - 90);
} else{
this.viewport.setRotation(this.viewport.degrees + 90);
}
this.viewport.applyConstraints();
return false;
case 82: //R - 90 degrees counterclockwise rotation
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.degrees + 90);
} else{
this.viewport.setRotation(this.viewport.degrees - 90);
}
this.viewport.applyConstraints();
return false;
case 102: //f
this.viewport.toggleFlip();
return false;
default:
// console.log( 'navigator keycode %s', event.keyCode );
return true;
@ -2620,6 +2657,9 @@ function onCanvasClick( event ) {
if ( !haveKeyboardFocus ) {
this.canvas.focus();
}
if(this.viewport.flipped){
event.position.x = this.viewport.getContainerSize().x - event.position.x;
}
var canvasClickEventArgs = {
tracker: event.eventSource,
@ -2739,6 +2779,9 @@ function onCanvasDrag( event ) {
if( !this.panVertical ){
event.delta.y = 0;
}
if(this.viewport.flipped){
event.delta.x = -event.delta.x;
}
if( this.constrainDuringPan ){
var delta = this.viewport.deltaPointsFromPixels( event.delta.negate() );
@ -3064,6 +3107,10 @@ function onCanvasScroll( event ) {
if (deltaScrollTime > this.minScrollDeltaTime) {
this._lastScrollTime = thisScrollTime;
if(this.viewport.flipped){
event.position.x = this.viewport.getContainerSize().x - event.position.x;
}
if ( !event.preventDefaultAction && this.viewport ) {
gestureSettings = this.gestureSettingsByDeviceType( event.pointerType );
if ( gestureSettings.scrollToZoom ) {
@ -3429,11 +3476,11 @@ function onFullScreen() {
function onRotateLeft() {
if ( this.viewport ) {
var currRotation = this.viewport.getRotation();
if (currRotation === 0) {
currRotation = 270;
}
else {
currRotation -= 90;
if ( this.viewport.flipped ){
currRotation = $.positiveModulo(currRotation + 90, 360);
} else {
currRotation = $.positiveModulo(currRotation - 90, 360);
}
this.viewport.setRotation(currRotation);
}
@ -3445,16 +3492,22 @@ function onRotateLeft() {
function onRotateRight() {
if ( this.viewport ) {
var currRotation = this.viewport.getRotation();
if (currRotation === 270) {
currRotation = 0;
}
else {
currRotation += 90;
if ( this.viewport.flipped ){
currRotation = $.positiveModulo(currRotation - 90, 360);
} else {
currRotation = $.positiveModulo(currRotation + 90, 360);
}
this.viewport.setRotation(currRotation);
}
}
/**
* Note: When pressed flip control button
*/
function onFlip() {
this.viewport.toggleFlip();
}
function onPrevious(){
var previous = this._sequenceIndex - 1;

53
src/viewport.js
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@ -107,6 +107,7 @@ $.Viewport = function( options ) {
minZoomLevel: $.DEFAULT_SETTINGS.minZoomLevel,
maxZoomLevel: $.DEFAULT_SETTINGS.maxZoomLevel,
degrees: $.DEFAULT_SETTINGS.degrees,
flipped: $.DEFAULT_SETTINGS.flipped,
homeFillsViewer: $.DEFAULT_SETTINGS.homeFillsViewer
}, options );
@ -880,7 +881,6 @@ $.Viewport.prototype = {
if (!this.viewer || !this.viewer.drawer.canRotate()) {
return this;
}
this.degrees = $.positiveModulo(degrees, 360);
this._setContentBounds(
this.viewer.world.getHomeBounds(),
@ -1518,7 +1518,58 @@ $.Viewport.prototype = {
var scale = this._contentBoundsNoRotate.width;
var viewportToImageZoomRatio = (imageWidth / containerWidth) / scale;
return imageZoom * viewportToImageZoomRatio;
},
/**
* Toggles flip state and demands a new drawing on navigator and viewer objects.
* @function
* @return {OpenSeadragon.Viewport} Chainable.
*/
toggleFlip: function() {
this.setFlip(!this.getFlip());
return this;
},
/**
* Gets flip state stored on viewport.
* @function
* @return {Boolean} Flip state.
*/
getFlip: function() {
return this.flipped;
},
/**
* Sets flip state according to the state input argument.
* @function
* @param {Boolean} state - Flip state to set.
* @return {OpenSeadragon.Viewport} Chainable.
*/
setFlip: function( state ) {
if ( this.flipped === state ) {
return this;
}
this.flipped = state;
if(this.viewer.navigator){
this.viewer.navigator.setFlip(this.getFlip());
}
this.viewer.forceRedraw();
/**
* Raised when flip state has been changed.
*
* @event flip
* @memberof OpenSeadragon.Viewer
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised the event.
* @property {Number} flipped - The flip state after this change.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.viewer.raiseEvent('flip', {"flipped": state});
return this;
}
};
}( OpenSeadragon ));

246
test/modules/viewport.js
View File

@ -118,6 +118,7 @@
assert,
actual,
expected,
1e-15,
"Correctly converted coordinates " + orig
);
} else {
@ -136,8 +137,8 @@
viewer.open(DZI_PATH);
};
function assertPointsEquals(assert, actual, expected, message) {
Util.assertPointsEquals(assert, actual, expected, 1e-15, message);
function assertPointsEquals(assert, actual, expected, variance, message) {
Util.assertPointsEquals(assert, actual, expected, variance, message);
}
// Tests start here.
@ -470,6 +471,32 @@
bounds,
EPSILON,
"Viewport.applyConstraints should move viewport.");
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('applyConstraints flipped', function(assert) {
var done = assert.async();
var openHandler = function() {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
viewport.fitBounds(new OpenSeadragon.Rect(1, 1, 1, 1), true);
viewport.visibilityRatio = 0.3;
viewport.applyConstraints(true);
var bounds = viewport.getBounds();
Util.assertRectangleEquals(
assert,
new OpenSeadragon.Rect(0.7, 0.7, 1, 1),
bounds,
EPSILON,
"Viewport.applyConstraints should move flipped viewport.");
done();
};
viewer.addHandler('open', openHandler);
@ -514,6 +541,32 @@
new OpenSeadragon.Rect(1, 0, Math.sqrt(2), Math.sqrt(2), 45),
EPSILON,
"Viewport.applyConstraints with rotation should move viewport.");
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('applyConstraints flipped with rotation', function(assert) {
var done = assert.async();
var openHandler = function() {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
viewport.setRotation(45);
viewport.fitBounds(new OpenSeadragon.Rect(1, 1, 1, 1), true);
viewport.applyConstraints(true);
var bounds = viewport.getBounds();
Util.assertRectangleEquals(
assert,
bounds,
new OpenSeadragon.Rect(1, 0, Math.sqrt(2), Math.sqrt(2), 45),
EPSILON,
"Viewport.applyConstraints flipped and with rotation should move viewport.");
done();
};
viewer.addHandler('open', openHandler);
@ -742,6 +795,30 @@
viewer.open(DZI_PATH);
});
QUnit.test('panBy flipped', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
for (var i = 0; i < testPoints.length; i++){
var expected = viewport.getCenter().plus(testPoints[i]);
viewport.panBy(testPoints[i], true);
assert.propEqual(
viewport.getCenter(),
expected,
"Panned flipped by the correct amount."
);
}
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('panTo', function(assert) {
var done = assert.async();
var openHandler = function(event) {
@ -763,6 +840,29 @@
viewer.open(DZI_PATH);
});
QUnit.test('panTo flipped', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
for (var i = 0; i < testPoints.length; i++){
viewport.panTo(testPoints[i], true);
assert.propEqual(
viewport.getCenter(),
testPoints[i],
"Panned flipped to the correct location."
);
}
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('zoomBy no ref point', function(assert) {
var done = assert.async();
var openHandler = function(event) {
@ -821,6 +921,45 @@
viewer.open(DZI_PATH);
});
QUnit.test('zoomBy flipped with ref point', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
var expectedFlippedCenters = [
new OpenSeadragon.Point(5, 5),
new OpenSeadragon.Point(6.996, 6.996),
new OpenSeadragon.Point(7.246, 6.996),
new OpenSeadragon.Point(7.246, 6.996),
new OpenSeadragon.Point(7.621, 7.371),
new OpenSeadragon.Point(7.621, 7.371),
];
for (var i = 0; i < testZoomLevels.length; i++) {
viewport.zoomBy(testZoomLevels[i], testPoints[i], true);
assert.propEqual(
testZoomLevels[i],
viewport.getZoom(),
"Zoomed flipped by the correct amount."
);
assertPointsEquals(
assert,
expectedFlippedCenters[i],
viewport.getCenter(),
1e-6,
"Panned flipped to the correct location."
);
}
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('zoomTo no ref point', function(assert) {
var done = assert.async();
var openHandler = function(event) {
@ -866,8 +1005,8 @@
);
assertPointsEquals(
assert,
viewport.getCenter(),
expectedCenters[i],
viewport.getCenter(),
1e-14,
"Panned to the correct location."
);
@ -879,6 +1018,45 @@
viewer.open(DZI_PATH);
});
QUnit.test('zoomTo flipped with ref point', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
var expectedFlippedCenters = [
new OpenSeadragon.Point(5, 5),
new OpenSeadragon.Point(4.7505, 4.7505),
new OpenSeadragon.Point(4.6005, 4.7505),
new OpenSeadragon.Point(4.8455, 4.9955),
new OpenSeadragon.Point(5.2205, 5.3705),
new OpenSeadragon.Point(5.2205, 5.3705),
];
for (var i = 0; i < testZoomLevels.length; i++) {
viewport.zoomTo(testZoomLevels[i], testPoints[i], true);
assert.propEqual(
viewport.getZoom(),
testZoomLevels[i],
"Zoomed flipped to the correct level."
);
assertPointsEquals(
assert,
expectedFlippedCenters[i],
viewport.getCenter(),
1e-14,
"Panned flipped to the correct location."
);
}
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('rotation', function(assert){
var done = assert.async();
var openHandler = function(event) {
@ -890,6 +1068,28 @@
assert.propEqual(viewport.getRotation, 90, "Rotation should be 90 degrees");
viewport.setRotation(-75);
assert.propEqual(viewport.getRotation, -75, "Rotation should be -75 degrees");
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('rotation (flipped)', function(assert){
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
viewport.setFlip(true);
assert.propEqual(viewport.getRotation, 0, "Original flipped rotation should be 0 degrees");
viewport.setRotation(90);
assert.propEqual(viewport.getRotation, 90, "Flipped rotation should be 90 degrees");
viewport.setRotation(-75);
assert.propEqual(viewport.getRotation, -75, "Flipped rotation should be -75 degrees");
done();
};
@ -1140,4 +1340,44 @@
});
});
QUnit.test('toggleFlipState', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
assert.deepEqual(viewport.getFlip(), false, "Get original flip state should be false");
viewport.toggleFlip();
assert.deepEqual(viewport.getFlip(), true, "Toggling flip state variable, viewport should be true");
viewport.toggleFlip();
assert.deepEqual(viewport.getFlip(), false, "Toggling back flip state variable, viewport should be false again");
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
QUnit.test('setFlipState', function(assert) {
var done = assert.async();
var openHandler = function(event) {
viewer.removeHandler('open', openHandler);
var viewport = viewer.viewport;
assert.deepEqual(viewport.getFlip(), false, "Get original flip state should be false");
viewport.setFlip(true);
assert.deepEqual(viewport.getFlip(), true, "Setting flip state variable should be true");
viewport.setFlip(false);
assert.deepEqual(viewport.getFlip(), false, "Unsetting flip state variable, viewport should be false again");
done();
};
viewer.addHandler('open', openHandler);
viewer.open(DZI_PATH);
});
})();