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import extend from 'tui-code-snippet/object/extend';
import Component from '@/interface/component';
import { componentNames, rejectMessages } from '@/consts';
/**
* Flip
* @class Flip
* @param {Graphics} graphics - Graphics instance
* @extends {Component}
* @ignore
*/
class Flip extends Component {
constructor(graphics) {
super(componentNames.FLIP, graphics);
}
/**
* Get current flip settings
* @returns {{flipX: Boolean, flipY: Boolean}}
*/
getCurrentSetting() {
const canvasImage = this.getCanvasImage();
return {
flipX: canvasImage.flipX,
flipY: canvasImage.flipY,
};
}
/**
* Set flipX, flipY
* @param {{flipX: Boolean, flipY: Boolean}} newSetting - Flip setting
* @returns {Promise}
*/
set(newSetting) {
const setting = this.getCurrentSetting();
const isChangingFlipX = setting.flipX !== newSetting.flipX;
const isChangingFlipY = setting.flipY !== newSetting.flipY;
if (!isChangingFlipX && !isChangingFlipY) {
return Promise.reject(rejectMessages.flip);
}
extend(setting, newSetting);
this.setImageProperties(setting, true);
this._invertAngle(isChangingFlipX, isChangingFlipY);
this._flipObjects(isChangingFlipX, isChangingFlipY);
return Promise.resolve({
flipX: setting.flipX,
flipY: setting.flipY,
angle: this.getCanvasImage().angle,
});
}
/**
* Invert image angle for flip
* @param {boolean} isChangingFlipX - Change flipX
* @param {boolean} isChangingFlipY - Change flipY
*/
_invertAngle(isChangingFlipX, isChangingFlipY) {
const canvasImage = this.getCanvasImage();
let { angle } = canvasImage;
if (isChangingFlipX) {
angle *= -1;
}
if (isChangingFlipY) {
angle *= -1;
}
canvasImage.rotate(parseFloat(angle)).setCoords(); // parseFloat for -0 to 0
}
/**
* Flip objects
* @param {boolean} isChangingFlipX - Change flipX
* @param {boolean} isChangingFlipY - Change flipY
* @private
*/
_flipObjects(isChangingFlipX, isChangingFlipY) {
const canvas = this.getCanvas();
if (isChangingFlipX) {
canvas.forEachObject((obj) => {
obj
.set({
angle: parseFloat(obj.angle * -1), // parseFloat for -0 to 0
flipX: !obj.flipX,
left: canvas.width - obj.left,
})
.setCoords();
});
}
if (isChangingFlipY) {
canvas.forEachObject((obj) => {
obj
.set({
angle: parseFloat(obj.angle * -1), // parseFloat for -0 to 0
flipY: !obj.flipY,
top: canvas.height - obj.top,
})
.setCoords();
});
}
canvas.renderAll();
}
/**
* Reset flip settings
* @returns {Promise}
*/
reset() {
return this.set({
flipX: false,
flipY: false,
});
}
/**
* Flip x
* @returns {Promise}
*/
flipX() {
const current = this.getCurrentSetting();
return this.set({
flipX: !current.flipX,
flipY: current.flipY,
});
}
/**
* Flip y
* @returns {Promise}
*/
flipY() {
const current = this.getCurrentSetting();
return this.set({
flipX: current.flipX,
flipY: !current.flipY,
});
}
}
export default Flip;
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