fabric/dist/src/shapes/IText/ITextBehavior.min.mjs

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

import{_defineProperty as e}from"../../../_virtual/_@oxc-project_runtime@0.122.0/helpers/defineProperty.min.mjs";import{LEFT as t,RIGHT as n,reNewline as r}from"../../constants.min.mjs";import{Point as i}from"../../Point.min.mjs";import{getDocumentFromElement as a}from"../../util/dom_misc.min.mjs";import"../Text/constants.min.mjs";import{animate as o}from"../../util/animation/animate.min.mjs";import{FabricText as s}from"../Text/Text.min.mjs";const c=/[ \n\.,;!\?\-]/;var l=class extends s{constructor(...t){super(...t),e(this,`_currentCursorOpacity`,1)}initBehavior(){this._tick=this._tick.bind(this),this._onTickComplete=this._onTickComplete.bind(this),this.updateSelectionOnMouseMove=this.updateSelectionOnMouseMove.bind(this)}onDeselect(e){return this.isEditing&&this.exitEditing(),this.selected=!1,super.onDeselect(e)}_animateCursor({toValue:e,duration:t,delay:n,onComplete:r}){return o({startValue:this._currentCursorOpacity,endValue:e,duration:t,delay:n,onComplete:r,abort:()=>!this.canvas||this.selectionStart!==this.selectionEnd,onChange:e=>{this._currentCursorOpacity=e,this.renderCursorOrSelection()}})}_tick(e){this._currentTickState=this._animateCursor({toValue:0,duration:this.cursorDuration/2,delay:Math.max(e||0,100),onComplete:this._onTickComplete})}_onTickComplete(){var e;(e=this._currentTickCompleteState)==null||e.abort(),this._currentTickCompleteState=this._animateCursor({toValue:1,duration:this.cursorDuration,onComplete:this._tick})}initDelayedCursor(e){this.abortCursorAnimation(),this._tick(e?0:this.cursorDelay)}abortCursorAnimation(){let e=!1;[this._currentTickState,this._currentTickCompleteState].forEach(t=>{t&&!t.isDone()&&(e=!0,t.abort())}),this._currentCursorOpacity=1,e&&this.clearContextTop()}restartCursorIfNeeded(){[this._currentTickState,this._currentTickCompleteState].some(e=>!e||e.isDone())&&this.initDelayedCursor()}selectAll(){return this.selectionStart=0,this.selectionEnd=this._text.length,this._fireSelectionChanged(),this._updateTextarea(),this}cmdAll(){this.selectAll(),this.renderCursorOrSelection()}getSelectedText(){return this._text.slice(this.selectionStart,this.selectionEnd).join(``)}findWordBoundaryLeft(e){let t=0,n=e-1;if(this._reSpace.test(this._text[n]))for(;this._reSpace.test(this._text[n]);)t++,n--;for(;/\S/.test(this._text[n])&&n>-1;)t++,n--;return e-t}findWordBoundaryRight(e){let t=0,n=e;if(this._reSpace.test(this._text[n]))for(;this._reSpace.test(this._text[n]);)t++,n++;for(;/\S/.test(this._text[n])&&n<this._text.length;)t++,n++;return e+t}findLineBoundaryLeft(e){let t=0,n=e-1;for(;!/\n/.test(this._text[n])&&n>-1;)t++,n--;return e-t}findLineBoundaryRight(e){let t=0,n=e;for(;!/\n/.test(this._text[n])&&n<this._text.length;)t++,n++;return e+t}searchWordBoundary(e,t){let n=this._text,i=e>0&&this._reSpace.test(n[e])&&(t===-1||!r.test(n[e-1]))?e-1:e,a=n[i];for(;i>0&&i<n.length&&!c.test(a);)i+=t,a=n[i];return t===-1&&c.test(a)&&i++,i}selectWord(e){var t;e=(t=e)==null?this.selectionStart:t;let n=this.searchWordBoundary(e,-1),r=Math.max(n,this.searchWordBoundary(e,1));this.selectionStart=n,this.selectionEnd=r,this._fireSelectionChanged(),this._updateTextarea(),this.renderCursorOrSelection()}selectLine(e){var t;e=(t=e)==null?this.selectionStart:t;let n=this.findLineBoundaryLeft(e),r=this.findLineBoundaryRight(e);this.selectionStart=n,this.selectionEnd=r,this._fireSelectionChanged(),this._updateTextarea()}enterEditing(e){!this.isEditing&&this.editable&&(this.enterEditingImpl(),this.fire(`editing:entered`,e?{e}:void 0),this._fireSelectionChanged(),this.canvas&&(this.canvas.fire(`text:editing:entered`,{target:this,e}),this.canvas.requestRenderAll()))}enterEditingImpl(){this.canvas&&(this.canvas.calcOffset(),this.canvas.textEditingManager.exitTextEditing()),this.isEditing=!0,this.initHiddenTextarea(),this.hiddenTextarea.focus(),this.hiddenTextarea.value=this.text,this._updateTextarea(),this._saveEditingProps(),this._setEditingProps(),this._textBeforeEdit=this.text,this._tick()}updateSelectionOnMouseMove(e){if(this.getActiveControl())return;let t=this.hiddenTextarea;a(t).activeElement!==t&&t.focus();let n=this.getSelectionStartFromPointer(e),r=this.selectionStart,i=this.selectionEnd;(n===this.__selectionStartOnMouseDown&&r!==i||r!==n&&i!==n)&&(n>this.__selectionStartOnMouseDown?(this.selectionStart=this.__selectionStartOnMouseDown,this.selectionEnd=n):(this.selectionStart=n,this.selectionEnd=this.__selectionStartOnMouseDown),this.selectionStart===r&&this.selectionEnd===i||(this._fireSelectionChanged(),this._updateTextarea(),this.renderCursorOrSelection()))}_setEditingProps(){this.hoverCursor=`text`,this.canvas&&(this.canvas.defaultCursor=this.canvas.moveCursor=`text`),this.borderColor=this.editingBorderColor,this.hasControls=this.selectable=!1,this.lockMovementX=this.lockMovementY=!0}fromStringToGraphemeSelection(e,t,n){let r=n.slice(0,e),i=this.graphemeSplit(r).length;if(e===t)return{selectionStart:i,selectionEnd:i};let a=n.slice(e,t);return{selectionStart:i,selectionEnd:i+this.graphemeSplit(a).length}}fromGraphemeToStringSelection(e,t,n){let r=n.slice(0,e).join(``).length;return e===t?{selectionStart:r,selectionEnd:r}:{selectionStart:r,selectionEnd:r+n.slice(e,t).join(``).length}}_updateTextarea(){if(this.cursorOffsetCache={},this.hiddenTextarea){if(!this.inCompositionMode){let e=this.fromGraphemeToStringSelection(this.selectionStart,this.selectionEnd,this._text);this.hiddenTextarea.selectionStart=e.selectionStart,this.hiddenTextarea.selectionEnd=e.selectionEnd}this.updateTextareaPosition()}}updateFromTextArea(){let{hiddenTextarea:e,direction:r,textAlign:i,inCompositionMode:a}=this;if(!e)return;let o=i===`justify`?r===`ltr`?t:n:i.replace(`justify-`,``),s=this.getPositionByOrigin(o,`top`);this.cursorOffsetCache={},this.text=e.value,this.set(`dirty`,!0),this.initDimensions(),this.setPositionByOrigin(s,o,`top`),this.setCoords();let c=this.fromStringToGraphemeSelection(e.selectionStart,e.selectionEnd,e.value);this.selectionEnd=this.selectionStart=c.selectionEnd,a||(this.selectionStart=c.selectionStart),this.updateTextareaPosition()}updateTextareaPosition(){if(this.selectionStart===this.selectionEnd){let e=this._calcTextareaPosition();this.hiddenTextarea.style.left=e.left,this.hiddenTextarea.style.top=e.top}}_calcTextareaPosition(){if(!this.canvas)return{left:`1px`,top:`1px`};let e=this.inCompositionMode?this.compositionStart:this.selectionStart,t=this._getCursorBoundaries(e),n=this.get2DCursorLocation(e),r=n.lineIndex,a=n.charIndex,o=this.getValueOfPropertyAt(r,a,`fontSize`)*this.lineHeight,s=t.leftOffset,c=this.getCanvasRetinaScaling(),l=this.canvas.upperCanvasEl,u=l.width/c,d=l.height/c,f=u-o,p=d-o,m=new i(t.left+s,t.top+t.topOffset+o).transform(this.calcTransformMatrix()).transform(this.canvas.viewportTransform).multiply(new i(l.clientWidth/u,l.clientHeight/d));return m.x<0&&(m.x=0),m.x>f&&(m.x=f),m.y<0&&(m.y=0),m.y>p&&(m.y=p),m.x+=this.canvas._offset.left,m.y+=this.canvas._offset.top,{left:`${m.x}px`,top:`${m.y}px`,fontSize:`${o}px`,charHeight:o}}_saveEditingProps(){this._savedProps={hasControls:this.hasControls,borderColor:this.borderColor,lockMovementX:this.lockMovementX,lockMovementY:this.lockMovementY,hoverCursor:this.hoverCursor,selectable:this.selectable,defaultCursor:this.canvas&&this.canvas.defaultCursor,moveCursor:this.canvas&&this.canvas.moveCursor}}_restoreEditingProps(){this._savedProps&&(this.hoverCursor=this._savedProps.hoverCursor,this.hasControls=this._savedProps.hasControls,this.borderColor=this._savedProps.borderColor,this.selectable=this._savedProps.selectable,this.lockMovementX=this._savedProps.lockMovementX,this.lockMovementY=this._savedProps.lockMovementY,this.canvas&&(this.canvas.defaultCursor=this._savedProps.defaultCursor||this.canvas.defaultCursor,this.canvas.moveCursor=this._savedProps.moveCursor||this.canvas.moveCursor),delete this._savedProps)}exitEditingImpl(){let e=this.hiddenTextarea;this.selected=!1,this.isEditing=!1,e&&(e.blur&&e.blur(),e.parentNode&&e.parentNode.removeChild(e)),this.hiddenTextarea=null,this.abortCursorAnimation(),this.selectionStart!==this.selectionEnd&&this.clearContextTop(),this.selectionEnd=this.selectionStart,this._restoreEditingProps(),this._forceClearCache&&(this.initDimensions(),this.setCoords())}exitEditing(){let e=this._textBeforeEdit!==this.text;return this.exitEditingImpl(),this.fire(`editing:exited`),e&&this.fire(`modified`),this.canvas&&(this.canvas.fire(`text:editing:exited`,{target:this}),e&&this.canvas.fire(`object:modified`,{target:this})),this}_removeExtraneousStyles(){for(let e in this.styles)this._textLines[e]||delete this.styles[e]}removeStyleFromTo(e,t){let{lineIndex:n,charIndex:r}=this.get2DCursorLocation(e,!0),{lineIndex:i,charIndex:a}=this.get2DCursorLocation(t,!0);if(n!==i){if(this.styles[n])for(let e=r;e<this._unwrappedTextLines[n].length;e++)delete this.styles[n][e];if(this.styles[i])for(let e=a;e<this._unwrappedTextLines[i].length;e++){let t=this.styles[i][e];t&&(this.styles[n]||(this.styles[n]={}),this.styles[n][r+e-a]=t)}for(let e=n+1;e<=i;e++)delete this.styles[e];this.shiftLineStyles(i,n-i)}else if(this.styles[n]){let e=this.styles[n],t=a-r;for(let t=r;t<a;t++)delete e[t];for(let r in this.styles[n]){let n=parseInt(r,10);n>=a&&(e[n-t]=e[r],delete e[r])}}}shiftLineStyles(e,t){let n=Object.assign({},this.styles);for(let r in this.styles){let i=parseInt(r,10);i>e&&(this.styles[i+t]=n[i],n[i-t]||delete this.styles[i])}}insertNewlineStyleObject(e,t,n,r){let i={},a=this._unwrappedTextLines[e].length,o=a===t,s=!1;n||(n=1),this.shiftLineStyles(e,n);let c=this.styles[e]?this.styles[e][t===0?t:t-1]:void 0;for(let n in this.styles[e]){let r=parseInt(n,10);r>=t&&(s=!0,i[r-t]=this.styles[e][n],o&&t===0||delete this.styles[e][n])}let l=!1;for(s&&!o&&(this.styles[e+n]=i,l=!0),(l||a>t)&&n--;n>0;)r&&r[n-1]?this.styles[e+n]={0:{...r[n-1]}}:c?this.styles[e+n]={0:{...c}}:delete this.styles[e+n],n--;this._forceClearCache=!0}insertCharStyleObject(e,t,n,r){this.styles||(this.styles={});let i=this.styles[e],a=i?{...i}:{};n||(n=1);for(let e in a){let r=parseInt(e,10);r>=t&&(i[r+n]=a[r],a[r-n]||delete i[r])}if(this._forceClearCache=!0,r){for(;n--;)Object.keys(r[n]).length&&(this.styles[e]||(this.styles[e]={}),this.styles[e][t+n]={...r[n]});return}if(!i)return;let o=i[t?t-1:1];for(;o&&n--;)this.styles[e][t+n]={...o}}insertNewStyleBlock(e,t,n){let r=this.get2DCursorLocation(t,!0),i=[0],a,o=0;for(let t=0;t<e.length;t++)e[t]===`
`?(o++,i[o]=0):i[o]++;for(i[0]>0&&(this.insertCharStyleObject(r.lineIndex,r.charIndex,i[0],n),n=n&&n.slice(i[0]+1)),o&&this.insertNewlineStyleObject(r.lineIndex,r.charIndex+i[0],o),a=1;a<o;a++)i[a]>0?this.insertCharStyleObject(r.lineIndex+a,0,i[a],n):n&&this.styles[r.lineIndex+a]&&n[0]&&(this.styles[r.lineIndex+a][0]=n[0]),n=n&&n.slice(i[a]+1);i[a]>0&&this.insertCharStyleObject(r.lineIndex+a,0,i[a],n)}removeChars(e,t=e+1){this.removeStyleFromTo(e,t),this._text.splice(e,t-e),this.text=this._text.join(``),this.set(`dirty`,!0),this.initDimensions(),this.setCoords(),this._removeExtraneousStyles()}insertChars(e,t,n,r=n){r>n&&this.removeStyleFromTo(n,r);let i=this.graphemeSplit(e);this.insertNewStyleBlock(i,n,t),this._text=[...this._text.slice(0,n),...i,...this._text.slice(r)],this.text=this._text.join(``),this.set(`dirty`,!0),this.initDimensions(),this.setCoords(),this._removeExtraneousStyles()}setSelectionStartEndWithShift(e,r,i){i<=e?(r===e?this._selectionDirection=t:this._selectionDirection===`right`&&(this._selectionDirection=t,this.selectionEnd=e),this.selectionStart=i):i>e&&i<r?this._selectionDirection===`right`?this.selectionEnd=i:this.selectionStart=i:(r===e?this._selectionDirection=n:this._selectionDirection===`left`&&(this._selectionDirection=n,this.selectionStart=r),this.selectionEnd=i)}};export{l as ITextBehavior};
//# sourceMappingURL=ITextBehavior.min.mjs.map