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詹伟松 / Swell

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README
MulanPSL-2.0

Swell

组件介绍

基于OpenHarmony下的JavaScript UI框架,使用stack容器组件、canvas画布组件和button按钮组件,在按钮上绑定ontouchstart事件和ontouchend事件,实现一个自定义长按膨胀按钮组件,同时兼顾按钮和进度条两个功能。


效果展示

中途松开,启动失败

中途松开,启动失败

持续长按,成功启动

持续长按,成功启动

完整演示

完整演示


参数设置

参数名 描述 默认值
duration 用户可通过该参数设置长按启动事件所需时间 2000(ms)

代码模块说明

1. 引入自定义组件

在index.hml中引用自定义组件,为自定义组件命名。

<element name="btnswell" src='../../common/component/btnswell.hml'></element>

2. 组件使用

通过该组件的duration参数,设置启动事件所需长按的时间。

<btnswell duration="1500" @btn-type="btnClicked" @event-type="eventState"></btnswell>

代码截图

3. 父组件绑定事件

父组件根据自定义组件传回的Boolean类型的eventstate值,判断是否执行绑定的事件。

其中为了演示效果更加直观,设置了btnClicked属性,用于显示按钮状态(点击中/松开)。

对应事件赋值

4. 自定义组件绑定事件

大概思路

长按操作:ontouchstart事件和ontouchend事件结合

<stack class="stack-parent" style="background-color : #00000000">
    <canvas ref="canvas1" style="width: 300px; height: 300px; background-color: #00000000;"></canvas>
    <button id="btn" disabled="{{ disabled }}" class="Animation" type="circle"
            style="radius: {{ divR }}; background-color: #9D9D9D;"
            ontouchstart="Show" ontouchend="Erase"></button>
</stack>
详细流程

点击按钮,生成绿色外圈显示长按进度,按钮半径radius的值divR随着动画播放变大,按钮膨胀的同时实时判断该值是否达到最大,当按钮半径达到最大值时显示黄色外圈,提示用户“长按操作完成,松开即可启动事件”,松开后自定义组件向父组件返回eventstate值为true,父组件根据该值判断启动相应的绑定事件。若在按钮膨胀到最大前松开,执行ontouchend事件Erase,擦除用于提示的绿色外圈,并播放重置动画使按钮瞬间恢复为初始状态。

Show() {
        //打印按钮当前状态为“正在点击”
        this.$emit('btnType', {btnstate: '点击'});
        console.log("————按钮状态:点击中————");

        const el = this.$refs.canvas1;
        const ctx = el.getContext('2d', { antialias: true });
        //画外圈,用于提示长按进度
        ctx.lineWidth = 5;
        ctx.strokeStyle = '#82D900';
        ctx.beginPath();
        ctx.arc(150, 150, 100, 0, 6.28);
        ctx.stroke();
        console.log("外圈显现,按钮膨胀");

        //膨胀动画
        var options1 = {
            duration: this.duration,     //运行时间
            easing: 'linear',       //动画时间曲线
            fill: 'forwards',       //指定动画起始态或终止态
            iterations: 1,      //播放次数
            begin: 50.0,        //播放起点
            end: 100.0,     //播放终点
        }
        this.animator.update(options1);
        var _this = this;
        this.animator.onframe = function(value) {
            _this.divR = value;
            //外部色圈显现,提示启动事件准备就绪
            if(100 == _this.divR) {
                ctx.beginPath();
                ctx.arc(150, 150, 120, 0, 6.28);
                ctx.shadowBlur = 1;
                ctx.shadowColor = '#FFFF37';
                ctx.stroke();
                console.log("准备就绪");
            }
        };
        this.animator.play();
    },
Erase() {
        //打印按钮当前状态为“松开”
        this.$emit('btnType', {btnstate: '松开'});
        console.log("————按钮状态:松开————");

        //重置动画
        var options2 = {
            duration: 0,        //运行时间
            easing: 'linear',       //动画时间曲线
            fill: 'forwards',       //指定动画起始态或终止态
            iterations: 1,      //播放次数
            end: 50.0,      //播放终点为初始起点
        }
        this.animator.update(options2);
        var _this = this;
        this.animator.onframe = function(value) {
            _this.divR = value;
        };

        //成功启动事件
        if(100 == _this.divR) {
            this.disabled = true;       //按钮失效,不可点击
            //向父组件传递事件的状态值为true
            this.$emit('eventType', {eventstate: true});
            console.log("启动成功");
        }

        //启动失败,擦除提示外圈
        else {
            const el = this.$refs.canvas1;
            const ctx = el.getContext('2d');
            ctx.clearRect(45, 45, 210, 210);
            console.log("启动失败")
            console.log("外圈擦除,按钮重置");
        }
    },
木兰宽松许可证, 第2版 木兰宽松许可证, 第2版 2020年1月 http://license.coscl.org.cn/MulanPSL2 您对“软件”的复制、使用、修改及分发受木兰宽松许可证,第2版(“本许可证”)的如下条款的约束: 0. 定义 “软件”是指由“贡献”构成的许可在“本许可证”下的程序和相关文档的集合。 “贡献”是指由任一“贡献者”许可在“本许可证”下的受版权法保护的作品。 “贡献者”是指将受版权法保护的作品许可在“本许可证”下的自然人或“法人实体”。 “法人实体”是指提交贡献的机构及其“关联实体”。 “关联实体”是指,对“本许可证”下的行为方而言,控制、受控制或与其共同受控制的机构,此处的控制是指有受控方或共同受控方至少50%直接或间接的投票权、资金或其他有价证券。 1. 授予版权许可 每个“贡献者”根据“本许可证”授予您永久性的、全球性的、免费的、非独占的、不可撤销的版权许可,您可以复制、使用、修改、分发其“贡献”,不论修改与否。 2. 授予专利许可 每个“贡献者”根据“本许可证”授予您永久性的、全球性的、免费的、非独占的、不可撤销的(根据本条规定撤销除外)专利许可,供您制造、委托制造、使用、许诺销售、销售、进口其“贡献”或以其他方式转移其“贡献”。前述专利许可仅限于“贡献者”现在或将来拥有或控制的其“贡献”本身或其“贡献”与许可“贡献”时的“软件”结合而将必然会侵犯的专利权利要求,不包括对“贡献”的修改或包含“贡献”的其他结合。如果您或您的“关联实体”直接或间接地,就“软件”或其中的“贡献”对任何人发起专利侵权诉讼(包括反诉或交叉诉讼)或其他专利维权行动,指控其侵犯专利权,则“本许可证”授予您对“软件”的专利许可自您提起诉讼或发起维权行动之日终止。 3. 无商标许可 “本许可证”不提供对“贡献者”的商品名称、商标、服务标志或产品名称的商标许可,但您为满足第4条规定的声明义务而必须使用除外。 4. 分发限制 您可以在任何媒介中将“软件”以源程序形式或可执行形式重新分发,不论修改与否,但您必须向接收者提供“本许可证”的副本,并保留“软件”中的版权、商标、专利及免责声明。 5. 免责声明与责任限制 “软件”及其中的“贡献”在提供时不带任何明示或默示的担保。在任何情况下,“贡献者”或版权所有者不对任何人因使用“软件”或其中的“贡献”而引发的任何直接或间接损失承担责任,不论因何种原因导致或者基于何种法律理论,即使其曾被建议有此种损失的可能性。 6. 语言 “本许可证”以中英文双语表述,中英文版本具有同等法律效力。如果中英文版本存在任何冲突不一致,以中文版为准。 条款结束 如何将木兰宽松许可证,第2版,应用到您的软件 如果您希望将木兰宽松许可证,第2版,应用到您的新软件,为了方便接收者查阅,建议您完成如下三步: 1, 请您补充如下声明中的空白,包括软件名、软件的首次发表年份以及您作为版权人的名字; 2, 请您在软件包的一级目录下创建以“LICENSE”为名的文件,将整个许可证文本放入该文件中; 3, 请将如下声明文本放入每个源文件的头部注释中。 Copyright (c) [Year] [name of copyright holder] [Software Name] is licensed under Mulan PSL v2. You can use this software according to the terms and conditions of the Mulan PSL v2. You may obtain a copy of Mulan PSL v2 at: http://license.coscl.org.cn/MulanPSL2 THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. See the Mulan PSL v2 for more details. Mulan Permissive Software License,Version 2 Mulan Permissive Software License,Version 2 (Mulan PSL v2) January 2020 http://license.coscl.org.cn/MulanPSL2 Your reproduction, use, modification and distribution of the Software shall be subject to Mulan PSL v2 (this License) with the following terms and conditions: 0. Definition Software means the program and related documents which are licensed under this License and comprise all Contribution(s). Contribution means the copyrightable work licensed by a particular Contributor under this License. Contributor means the Individual or Legal Entity who licenses its copyrightable work under this License. Legal Entity means the entity making a Contribution and all its Affiliates. Affiliates means entities that control, are controlled by, or are under common control with the acting entity under this License, ‘control’ means direct or indirect ownership of at least fifty percent (50%) of the voting power, capital or other securities of controlled or commonly controlled entity. 1. Grant of Copyright License Subject to the terms and conditions of this License, each Contributor hereby grants to you a perpetual, worldwide, royalty-free, non-exclusive, irrevocable copyright license to reproduce, use, modify, or distribute its Contribution, with modification or not. 2. Grant of Patent License Subject to the terms and conditions of this License, each Contributor hereby grants to you a perpetual, worldwide, royalty-free, non-exclusive, irrevocable (except for revocation under this Section) patent license to make, have made, use, offer for sale, sell, import or otherwise transfer its Contribution, where such patent license is only limited to the patent claims owned or controlled by such Contributor now or in future which will be necessarily infringed by its Contribution alone, or by combination of the Contribution with the Software to which the Contribution was contributed. The patent license shall not apply to any modification of the Contribution, and any other combination which includes the Contribution. If you or your Affiliates directly or indirectly institute patent litigation (including a cross claim or counterclaim in a litigation) or other patent enforcement activities against any individual or entity by alleging that the Software or any Contribution in it infringes patents, then any patent license granted to you under this License for the Software shall terminate as of the date such litigation or activity is filed or taken. 3. No Trademark License No trademark license is granted to use the trade names, trademarks, service marks, or product names of Contributor, except as required to fulfill notice requirements in Section 4. 4. Distribution Restriction You may distribute the Software in any medium with or without modification, whether in source or executable forms, provided that you provide recipients with a copy of this License and retain copyright, patent, trademark and disclaimer statements in the Software. 5. Disclaimer of Warranty and Limitation of Liability THE SOFTWARE AND CONTRIBUTION IN IT ARE PROVIDED WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED. IN NO EVENT SHALL ANY CONTRIBUTOR OR COPYRIGHT HOLDER BE LIABLE TO YOU FOR ANY DAMAGES, INCLUDING, BUT NOT LIMITED TO ANY DIRECT, OR INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES ARISING FROM YOUR USE OR INABILITY TO USE THE SOFTWARE OR THE CONTRIBUTION IN IT, NO MATTER HOW IT’S CAUSED OR BASED ON WHICH LEGAL THEORY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 6. Language THIS LICENSE IS WRITTEN IN BOTH CHINESE AND ENGLISH, AND THE CHINESE VERSION AND ENGLISH VERSION SHALL HAVE THE SAME LEGAL EFFECT. IN THE CASE OF DIVERGENCE BETWEEN THE CHINESE AND ENGLISH VERSIONS, THE CHINESE VERSION SHALL PREVAIL. END OF THE TERMS AND CONDITIONS How to Apply the Mulan Permissive Software License,Version 2 (Mulan PSL v2) to Your Software To apply the Mulan PSL v2 to your work, for easy identification by recipients, you are suggested to complete following three steps: i Fill in the blanks in following statement, including insert your software name, the year of the first publication of your software, and your name identified as the copyright owner; ii Create a file named “LICENSE” which contains the whole context of this License in the first directory of your software package; iii Attach the statement to the appropriate annotated syntax at the beginning of each source file. Copyright (c) [Year] [name of copyright holder] [Software Name] is licensed under Mulan PSL v2. You can use this software according to the terms and conditions of the Mulan PSL v2. You may obtain a copy of Mulan PSL v2 at: http://license.coscl.org.cn/MulanPSL2 THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. See the Mulan PSL v2 for more details.

简介

基于OpenHarmony下的JavaScript UI框架,实现一个自定义长按膨胀按钮组件,同时兼顾按钮和进度条两个功能。 展开 收起
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MulanPSL-2.0
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