我开发了一个滑块,可以为我显示几张图像。
在顶部(大图像和滑块所在的位置),我将初始图像作为主图像。
在底部有辅助图像(请参见下图)。
是否有一种方法可以将图像拖动到包含滑块的div中以更改顺序?基本上,我打算将小盒子中的图像与大盒子中的第一张图像交换。
我也可以水平更改小图像的顺序吗?
谢谢。
代码
var val = ReturnNamedTupple();
Console.WriteLine($"The max value is {val.Max} and it is located in the {val.Pos}");
我尝试使用此功能,并添加了html cdkdrag,但没有,它没有用。
<div class="col-md-6" style="overflow-y: auto;" (cdkDropListDropped)="drop($event)">
<div class="drop" [style.border-width.px]="imagens.length > 0 ? 0: 3">
<div class="abc">
<ngb-carousel style="outline: none;" id="carousel" #carousel *ngIf="imagens" (slide)="change($event)">
<ng-template *ngFor="let imgIdx of imagens; let i = index" [id]="i" ngbSlide>
<div class="picsum-img-wrapper">
<img [src]="imgIdx.Imagem" style="border-radius: 8px;" class="img-responsive Images">
</div>
</ng-template>
</ngb-carousel>
</div>
</div>
<div class="row">
<div class="Upcard" *ngFor="let imgIdx of imagens | slice:1" >
<img class="img-responsive" [src]="imgIdx.Imagem" style="width: 100%; height: 100%">
</div>
</div>
</div>
答案 0 :(得分:2)
拖放cdk可以在两个cdkDropList之间拖动。通常,它用于交换两个数组的值(cdkDropList的cdkDropListData)。因此,您首先需要定义cdkDropList和元素dragables(cdkDrag)
因此,首先将angular.json更改为使用cdk 8.2.3,-您使用的是Angular 8,而不是混合版本-
"@angular/cdk": "^8.2.3",
然后创建两个数组imagens和imagens2(*)并将.html更改为-see哪里有cdkDropList和cdkDrag-
<div class="col-md-6" style="overflow-y: auto;">
<div class="drop" [style.border-width.px]="imagens.length > 0 ? 0: 3">
<div class="abc" cdkDropList #dropList="cdkDropList" cdkDropListOrientation="horizontal"
[cdkDropListData]="imagens"
[cdkDropListConnectedTo]="[dragList]"
(cdkDropListDropped)="drop($event)">
<ngb-carousel data-interval="false" style="outline: none;" id="carousel" #carousel *ngIf="imagens"
(slide)="change($event)">
<ng-template *ngFor="let imgIdx of imagens; let i = index" [id]="i" ngbSlide>
<div class="picsum-img-wrapper" cdkDrag [cdkDragDisabled]="true">
<img [src]="imgIdx.Imagem" style="border-radius: 8px;" class="img-responsive Images">
</div>
</ng-template>
</ngb-carousel>
</div>
</div>
<div class="row" cdkDropList #dragList="cdkDropList" cdkDropListOrientation="horizontal"
[cdkDropListData]="imagens2"
[cdkDropListConnectedTo]="[dropList]"
(cdkDropListDropped)="drop($event)">
<div class="Upcard" *ngFor="let imgIdx of imagens2" cdkDrag>
<img class="img-responsive" [src]="imgIdx.Imagem" style="width: 100%; height: 100%">
</div>
</div>
</div>
好吧,通常功能下降就像
drop(event: CdkDragDrop<string[]>) {
if (event.previousContainer === event.container) {
moveItemInArray(event.container.data, event.previousIndex, event.currentIndex);
} else {
transferArrayItem(event.previousContainer.data,
event.container.data,
event.previousIndex,
event.currentIndex);
}
}
但是,这使得当您将图像块image2放到图像块上时,拖动的图像块将添加到阵列图像块中,并从阵列图像块2中删除-您可以移动图像-
如果要交换两个图像,只需使用拼接即可。记住,只改变两个数组
drop(event: CdkDragDrop<string[]>) {
if (event.previousContainer === event.container) {
moveItemInArray(
event.container.data,
event.previousIndex,
event.currentIndex
);
} else {
const imagen = { ...(event.container.data[event.currentIndex] as any) };
const previousImagen = {
...(event.previousContainer.data[event.previousIndex] as any)
};
event.container.data.splice(event.currentIndex, 1, previousImagen);
event.previousContainer.data.splice(event.previousIndex, 1, imagen);
}
}
好吧,如果您不想“互换”这两个图像,否则从滑块中删除拖动的图像,请更改功能下拉菜单。记住event.container.data是放置imagen的数组(在event.currentIndex中),event.previousContainer.data是拖动图像的数组(event.previousIndex给您拖动的imagen)
(*)我认为在两个不同的数组中,我使用“克隆”数组
imagens2 = this.imagens.map(x => ({ ...x }));