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Merge pull request #2291 from MohitBansal321/keyboardHandling

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Consolidate viewer keyboard handling into keydown handler
This commit is contained in:
Ian Gilman 2023-02-16 14:13:45 -08:00 committed by GitHub
commit c7992411a5
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 82 additions and 103 deletions
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185
src/viewer.js
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@ -2757,7 +2757,7 @@ function onCanvasKeyDown( event ) {
if ( !canvasKeyDownEventArgs.preventDefaultAction && !event.ctrl && !event.alt && !event.meta ) {
switch( event.keyCode ){
case 38://up arrow
case 38://up arrow/shift uparrow
if (!canvasKeyDownEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(1.1);
@ -2768,7 +2768,7 @@ function onCanvasKeyDown( event ) {
}
event.preventDefault = true;
break;
case 40://down arrow
case 40://down arrow/shift downarrow
if (!canvasKeyDownEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(0.9);
@ -2793,6 +2793,84 @@ function onCanvasKeyDown( event ) {
}
event.preventDefault = true;
break;
case 187://=|+
this.viewport.zoomBy(1.1);
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 189://-|_
this.viewport.zoomBy(0.9);
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 48://0|)
this.viewport.goHome();
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 87://W/w
if (!canvasKeyDownEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(1.1);
} else {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(0, -40)));
}
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 83://S/s
if (!canvasKeyDownEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(0.9);
} else {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(0, 40)));
}
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 65://a/A
if (!canvasKeyDownEventArgs.preventHorizontalPan) {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(-40, 0)));
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 68://d/D
if (!canvasKeyDownEventArgs.preventHorizontalPan) {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(40, 0)));
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 82: //r - clockwise rotation/R - counterclockwise rotation
if(event.shift){
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.getRotation() + this.rotationIncrement);
} else{
this.viewport.setRotation(this.viewport.getRotation() - this.rotationIncrement);
}
}else{
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.getRotation() - this.rotationIncrement);
} else{
this.viewport.setRotation(this.viewport.getRotation() + this.rotationIncrement);
}
}
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 70: //f/F
this.viewport.toggleFlip();
event.preventDefault = true;
break;
case 74: //j - previous image source
this.goToPreviousPage();
break;
case 75: //k - next image source
this.goToNextPage();
break;
default:
//console.log( 'navigator keycode %s', event.keyCode );
event.preventDefault = false;
@ -2802,12 +2880,10 @@ function onCanvasKeyDown( event ) {
event.preventDefault = false;
}
}
function onCanvasKeyPress( event ) {
var canvasKeyPressEventArgs = {
originalEvent: event.originalEvent,
preventDefaultAction: false,
preventVerticalPan: event.preventVerticalPan || !this.panVertical,
preventHorizontalPan: event.preventHorizontalPan || !this.panHorizontal
};
/**
@ -2818,109 +2894,12 @@ function onCanvasKeyPress( event ) {
* @type {object}
* @property {OpenSeadragon.Viewer} eventSource - A reference to the Viewer which raised this event.
* @property {Object} originalEvent - The original DOM event.
* @property {Boolean} preventDefaultAction - Set to true to prevent default keyboard behaviour. Default: false.
* @property {Boolean} preventVerticalPan - Set to true to prevent keyboard vertical panning. Default: false.
* @property {Boolean} preventHorizontalPan - Set to true to prevent keyboard horizontal panning. Default: false.
* @property {?Object} userData - Arbitrary subscriber-defined object.
*/
this.raiseEvent('canvas-key-press', canvasKeyPressEventArgs);
if ( !canvasKeyPressEventArgs.preventDefaultAction && !event.ctrl && !event.alt && !event.meta ) {
switch( event.keyCode ){
case 43://=|+
case 61://=|+
this.viewport.zoomBy(1.1);
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 45://-|_
this.viewport.zoomBy(0.9);
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 48://0|)
this.viewport.goHome();
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 119://w
case 87://W
if (!canvasKeyPressEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(1.1);
} else {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(0, -40)));
}
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 115://s
case 83://S
if (!canvasKeyPressEventArgs.preventVerticalPan) {
if ( event.shift ) {
this.viewport.zoomBy(0.9);
} else {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(0, 40)));
}
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 97://a
if (!canvasKeyPressEventArgs.preventHorizontalPan) {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(-40, 0)));
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 100://d
if (!canvasKeyPressEventArgs.preventHorizontalPan) {
this.viewport.panBy(this.viewport.deltaPointsFromPixels(new $.Point(40, 0)));
this.viewport.applyConstraints();
}
event.preventDefault = true;
break;
case 114: //r - clockwise rotation
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.getRotation() - this.rotationIncrement);
} else{
this.viewport.setRotation(this.viewport.getRotation() + this.rotationIncrement);
}
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 82: //R - counterclockwise rotation
if(this.viewport.flipped){
this.viewport.setRotation(this.viewport.getRotation() + this.rotationIncrement);
} else{
this.viewport.setRotation(this.viewport.getRotation() - this.rotationIncrement);
}
this.viewport.applyConstraints();
event.preventDefault = true;
break;
case 102: //f
this.viewport.toggleFlip();
event.preventDefault = true;
break;
case 106: //j - previous image source
this.goToPreviousPage();
break;
case 107: //k - next image source
this.goToNextPage();
break;
default:
// console.log( 'navigator keycode %s', event.keyCode );
event.preventDefault = false;
break;
}
} else {
event.preventDefault = false;
}
}
function onCanvasClick( event ) {
var gestureSettings;