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HTML5 Canvas图像模糊完美解决办法

程序员文章站 2023-12-14 13:06:58
这篇文章主要介绍了HTML5 Canvas图像模糊完美解决办法,需要的朋友可以参考下... 18-02-06...

1、最近在用h5的canvas画动画,发现图像特别模糊。后来终于找到罪魁祸首是<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />这个代码,因为这行代码进行了伸缩

2、模糊图像的效果:

HTML5 Canvas图像模糊完美解决办法 

3、将压缩去掉后的效果

HTML5 Canvas图像模糊完美解决办法 

可以将代码改成

 

<!doctype html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="user-scalable=no" />
    <title>赛事详细页</title>
    <script src="js/rem.js" type="text/javascript" charset="utf-8"></script>
    <link rel="stylesheet" type="text/css" href="css/m_reset.css" />
    <link rel="stylesheet" type="text/css" href="css/gamelistsnew.css" />
    <link href="css/mask.css" rel="stylesheet" />
</head>
<body>
    <div class="tipmask">
        <div class="tipbox">
            <img src="img/failetip.png" class="tipsimg" />
            <div class="filebtn">
                <img src="img/filebtn.png" />
                <span class="tryagain">再试一次</span>
            </div>
        </div>
    </div>
    <div>
        <img src="img/whiteback.png" class="titleimg" />
        <div class="bgevent" id="contentbody">
            <div id="eventdetail" v-cloak>
                <!--标题-->
                <div class="detailevent">
                    <div class="titlevs">
                        <img class="teamflaglogo" onerror="nofind(this);" :src="'img/teamlogonew/'+eventdetail.hometeamid+'.png'" />
                        <div class="countryname">
                            {{eventdetail.hometeamname}}
                        </div>
                    </div>
                    <div class="titlevs" style="padding-top:0.3rem ;">
                        <div>
                            <!--未开赛-->
                            <!--<p class="theworldcup">世界杯</p>-->
                            <p class="thegamenowdatatime">{{eventdetail.timeformat }}</p>
                            <p class="gamebegintime">{{getscoreorvs(eventdetail.hometeamscore,eventdetail.awayteamscore)}}</p>
                        </div>
                        <!--开赛时长-->
                        <!--<div>
                            <p>73:40</p>
                        </div>-->
                    </div>
                    <div class="titlevs">
                        <img class="teamflaglogo" onerror="nofind(this);"
                             :src="'img/teamlogonew/'+eventdetail.awayteamid+'.png'" />
                        <div class="countryname">
                            {{eventdetail.awayteamname}}
                        </div>
                    </div>
                </div>
                <div id="ordersuccess" class="ordersuccess">
                    <div style="text-align:right;padding-top:0.2rem;padding-left:0.2rem;">
                        <img src="img/ordersuccess/close.png" style="width:0.45rem;height:0.45rem;" id="closesuccess" onclick="closesuccess();" />
                    </div>
                    <div class="teamname">
                        <div class="teamnameitem"><p class="teamnameitemtop">{{eventdetail.hometeamname}}</p><br /><p class="teamnameitembottom">home</p></div>
                        <div class="teamnameitem "><p class="teamnameitemmiddle">vs</p></div>
                        <div class="teamnameitem"><p class="teamnameitemtop">{{eventdetail.awayteamname}}</p><br /><p class="teamnameitembottom">away</p></div>
                    </div>
                    <div class="teamdetail">
                        <div class="teamdate"><span>{{eventdetail.competitionname}}</span><span>/</span><span>{{eventdetail.dateformat}}</span></div>
                        <div class="teamplaysselection">
                            <table style="width:100%;text-align:left;height:100%;">
                                <tr>
                                    <td class="teamplaysselectiontop" style="width:50%;">玩法</td>
                                    <td class="teamplaysselectiontop" style="width:50%;">选项</td>
                                </tr>
                                <tr>
                                    <td class="teamplaysselectionbottom" style="width:50%;" id="rulename">match odds</td>
                                    <td class="teamplaysselectionbottom" style="width:50%;" id="selectionname">home</td>
                                </tr>
                            </table>
                        </div>
                        <div class="teamwinmoney">
                            <table style="width:90%;text-align:left;height:100%;">
                                <tr>
                                    <td class="teamwinmoneytop" style="width:50%;">
                                        本金
                                    </td>
                                    <td class="teamwinmoneytop" style="width:50%;">
                                        赔率
                                    </td>
                                    <td class="teamwinmoneytop" style="width:50%;">
                                        预赢
                                    </td>
                                </tr>
                                <tr>
                                    <td class="teamwinmoneybottom" style="width:50%;" id="betmoneysuc">1000</td>
                                    <td class="teamwinmoneybottom" style="width:50%;" id="betodds">12.54</td>
                                    <td class="teamwinmoneybottom" style="width:50%;" id="betwin">12540</td>
                                </tr>
                            </table>
                        </div>
                    </div>
                </div>
            </div>
            <div>
                <div class="square" id="square">
                    <canvas id="courtcasenew" width="980" height="765"></canvas>
                </div>
                <img src="img/balllittle.png" style="width:20px;height:20px;display:none;" id="imgballnew" />
            </div>
            <div class="middlechat">
                <div class="middleitem" id="jcc">
                    <p class="tabactive">竞猜场</p>
                </div>
                <div class="middleitem" id="jcjl">
                    <p class="tabcommon">竞猜记录</p>
                </div>
                <div class="middleitem" id="sssj">
                    <p class="tabcommon">赛事事件</p>
                </div>
                <div class="middleitem" id="jstj">
                    <p class="tabcommon">技术统计</p>
                </div>
            </div>
            <div class="downchangrtab quizgames" style="display: block;">
                <div id="ruletypeitems" v-cloak>
                    <!--胜平负-->
                    <div class="diffplaystetx" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==100">
                        <span class="speciesname">赛果</span>
                        <span class="rotary" v-if="item.state!=1">(已封盘)</span>
                        <span class="speciesexp">猜90分钟(含补时)两队的比赛结果</span>
                    </div>
                    <div v-for="(item,index) in eventdetail.market" v-if="item.ruletype==100" id="result" name="selectionitems" class="result">
                        <div v-bind:class="[(select.backodds<1.01 || item.state!=1) ? 'resutitemgray commonbordergray':'resutitem commonborder']" v-for="(select,index) in item.selection"
                             v-on:click="select.backodds>=1.01 &&clickfun($event,item.state,select.backodds,item.marketid,select.selectionid,'赛果',select.selectionname);" name="itemselection">
                            <p class="winequlose" v-bind:name="'item'+item.marketid">{{select.selectionname}}</p>
                            <p class="winequloseodds " v-bind:name="'item'+item.marketid">
                                <span v-bind:id="item.marketid+select.selectionid" v-bind:maxlimit="select.maxstakelimit">{{select.backodds}}</span>
                                <img src="img/uping.png" style="width:0.2rem;display:none;" v-bind:id="'redone'+item.marketid+select.selectionid" />
                                <img src="img/downing.png" style="width:0.2rem;display:none;" v-bind:id="'greenone'+item.marketid+select.selectionid" />
                            </p>
                        </div>
                    </div>
                    <!--单双-->
                    <div class="diffplaystetx" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==130">
                        <span class="speciesname">单双</span>
                        <span class="rotary" v-if="item.state!=1">(已封盘)</span>
                        <span class="speciesexp">猜90分钟(含补时)比赛总进球的单双</span>
                    </div>
                    <div id="oddeven" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==130" name="selectionitems" class="oddeven">
                        <div v-bind:class="[(select.backodds<1.01 || item.state!=1) ? 'oddevenitemgray commonbordergray':'oddevenitem commonborder']" v-for="(select,index) in item.selection" v-on:click="select.backodds>=1.01 &&clickfun($event,item.state,select.backodds,item.marketid,select.selectionid,'单双',select.selectionname)" name="itemselection">
                            <p class="winequlose" v-bind:name="'item'+item.marketid" v-bind:id="'selectionname'+item.marketid+select.selectionid">{{select.selectionname}}</p>
                            <p class="winequloseodds" v-bind:name="'item'+item.marketid">
                                <span v-bind:id="item.marketid+select.selectionid" v-bind:maxlimit="select.maxstakelimit">{{select.backodds}}</span>
                                <img src="img/uping.png" style="width:0.2rem;display:none;" v-bind:id="'redone'+item.marketid+select.selectionid" />
                                <img src="img/downing.png" style="width:0.2rem;display:none;" v-bind:id="'greenone'+item.marketid+select.selectionid" />
                            </p>
                        </div>
                    </div>
                    <!--总进球-->
                    <div class="diffplaystetx" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==410">
                        <span class="speciesname">总进球 </span>
                        <span class="rotary" v-if="item.state!=1">(已封盘)</span>
                        <span class="speciesexp">猜90分钟(含补时)比赛总进球的数 </span>
                    </div>
                    <div id="totalgoals" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==410" name="selectionitems" class="totalgoals">
                        <div v-bind:class="[(select.backodds<1.01 || item.state!=1) ? 'totalgoalitemgray commonbordergray':'totalgoalitem commonborder']" v-for="(select,index) in item.selection" v-on:click="select.backodds>=1.01 &&clickfun($event,item.state,select.backodds,item.marketid,select.selectionid,'总进球',select.selectionname)" name="itemselection">
                            <p class="winequlose" v-bind:name="'item'+item.marketid" v-bind:id="'selectionname'+item.marketid+select.selectionid">{{select.selectionname}}</p>
                            <p class="winequloseodds" v-bind:name="'item'+item.marketid">
                                <span v-bind:id="item.marketid+select.selectionid" v-bind:maxlimit="select.maxstakelimit">{{select.backodds}}</span>
                                <img src="img/uping.png" style="width:0.2rem;display:none;" v-bind:id="'redone'+item.marketid+select.selectionid" />
                                <img src="img/downing.png" style="width:0.2rem;display:none;" v-bind:id="'greenone'+item.marketid+select.selectionid" />
                            </p>
                        </div>
                    </div>
                    <!--全场比分-->
                    <div class="diffplaystetx" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==140">
                        <span class="speciesname">全场比分</span>
                        <span class="rotary" v-if="item.state!=1">(已封盘)</span>
                        <span class="speciesexp">猜90分钟(含补时)全场比分</span>
                    </div>
                    <div id="correctscorehome" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==140" name="selectionitems" class="correctscorehomeaway">
                        <div v-bind:class="[(select.backodds<1.01 || item.state!=1) ? 'correctscoreitemgray commonbordergray':'correctscoreitem commonborder']" v-for="(select,index) in item.selection" v-on:click="select.backodds>=1.01 &&clickfun($event,item.state,select.backodds,item.marketid,select.selectionid,'全场比分',select.selectionname)" name="itemselection">
                            <p class="winequlose" v-bind:name="'item'+item.marketid" v-bind:id="'selectionname'+item.marketid+select.selectionid">{{select.selectionname}}</p>
                            <p class="winequloseodds" v-bind:name="'item'+item.marketid">
                                <span v-bind:id="item.marketid+select.selectionid" v-bind:maxlimit="select.maxstakelimit">{{select.backodds}}</span>
                                <img src="img/uping.png" style="width:0.2rem;display:none;" v-bind:id="'redone'+item.marketid+select.selectionid" />
                                <img src="img/downing.png" style="width:0.2rem;display:none;" v-bind:id="'greenone'+item.marketid+select.selectionid" />
                            </p>
                        </div>
                    </div>
                    <div class="downimg" onclick="clickimg()">
                        <img src="img/todown.png" />
                    </div>
                    <!--下一进球-->
                    <div class="diffplaystetx" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==350">
                        <span class="speciesname">下一进球</span>
                        <span class="rotary" v-if="item.state!=1">(已封盘)</span>
                        <span class="speciesexp">猜90分钟(含补时)下一进球的球队</span>
                    </div>
                    <div id="nextgoal" v-for="(item,index) in eventdetail.market" v-if="item.ruletype==350" name="selectionitems" class="result">
                        <div v-bind:class="[(select.backodds<1.01 || item.state!=1) ? 'resutitemgray commonbordergray':'resutitem commonborder']" v-for="(select,index) in item.selection" v-on:click="select.backodds>=1.01 &&clickfun($event,item.state,select.backodds,item.marketid,select.selectionid,'下一进球',select.selectionname)" name="itemselection">
                            <p class="winequlose" v-bind:name="'item'+item.marketid" v-bind:id="'selectionname'+item.marketid+select.selectionid">{{select.selectionname}}</p>
                            <p class="winequloseodds" v-bind:name="'item'+item.marketid">
                                <span v-bind:id="item.marketid+select.selectionid" v-bind:maxlimit="select.maxstakelimit">{{select.backodds}}</span>
                                <img src="img/uping.png" style="width:0.2rem;display:none;" v-bind:id="'redone'+item.marketid+select.selectionid" />
                                <img src="img/downing.png" style="width:0.2rem;display:none;" v-bind:id="'greenone'+item.marketid+select.selectionid" />
                            </p>
                        </div>
                        <div class="" style="width: 100%;height:0.45rem;"></div>
                    </div>
                    <div class="perchdiv" style="width: 100%;height:3rem;"></div>
                </div>
            </div>
            <!--竞猜记录-->
            <div class="downchangrtab guessrecord">
                <div class="hide-body" id="dialogorders">
                    <div class="tablenameguess">
                        <li>玩法</li>
                        <li>选项</li>
                        <li>赔率</li>
                        <li>本金</li>
                        <li>结果</li>
                    </div>
                    <ul style="background:#ffffff;height:4.79rem;overflow: scroll;">
                        <div class="guessedlists" id="contentorders" v-for="(item,index) in orders">
                            <li>
                                {{item.marketname}}
                            </li>
                            <li>
                                {{item.selectionname}}
                            </li>
                            <li>
                                {{item.fillprice}}
                            </li>
                            <li>
                                {{item.fillamount}}
                            </li>
                            <li>
                                <p v-if="item.status == '0'"> 待确认</p>
                                <p v-else-if="item.status == '1'">订单正常</p>
                                <p v-else-if="item.status == '2'">{{item.netreturn}}</p>
                                <p v-else-if="item.status == '3'">订单已被取消</p>
                                <p v-else-if="item.status == '4'">订单无效</p>
                                <p v-else="item.status == '5'">订单被拒绝,投注延迟期间发生重要事件等原因</p>
                            </li>
                        </div>
                    </ul>
                </div>
            </div>
            <!--赛事事件-->
            <div class="downchangrtab" style="display: none;" v-if="">
                <div class="login-body" id="contentcases">
                    <table class="whathappen" v-if="cases.length >0">
                        <tr>
                            <td></td>
                            <td class="happenedmiddle">
                                <div class="happenedmiddle_top" style="margin-top: 0.4rem;"></div>
                            </td>
                            <td></td>
                        </tr>
                    </table>
                    <table class="whathappen" style="" v-for="(item,index) in cases" border="0" cellspacing="0" cellpadding="0">
                        <tr>
                            <td></td>
                            <td class="happenedmiddle">
                                <div class="happenedmiddle_line"></div>
                            </td>
                            <td></td>
                        </tr>
                        <tr v-if="item.casedescription.indexof('主')>-1">
                            <td class="eventshappendleft_things">
                                <div class="eventstext">
                                    <p class="eventstextleft_time">{{item.caseminutes}}'</p>
                                    <p class="eventstextleft_country">{{item.casedescription}}</p>
                                </div>
                            </td>
                            <td class="happenedmiddle">
                                <div class="eventshappend_img">
                                    <img :src="getmatcheventimg(item.casedescription)" />
                                </div>
                            </td>
                            <td></td>
                        </tr>
                        <tr v-if="item.casedescription.indexof('客')>-1">
                            <td></td>
                            <td class="happenedmiddle">
                                <div class="eventshappend_img">
                                    <img :src="getmatcheventimg(item.casedescription)" />
                                </div>
                            </td>
                            <td class="eventshappendright_things">
                                <div class="eventstext">
                                    <p class="eventstextright_country">{{item.casedescription}}</p>
                                    <p class="eventstextright_time">{{item.caseminutes}}'</p>
                                </div>
                            </td>
                        </tr>
                        <tr v-if="item.casedescription.indexof('主')<0 && item.casedescription.indexof('主')<0">
                            <td></td>
                            <td>
                                <a class="ti tlefoc">{{item.caseminutes}}'</a>
                                <a class="titlefoc">{{item.deschina}}</a>
                            </td>
                            <td></td>
                        </tr>
                    </table>
                    <table class="whathappen" v-if="cases.length >0">
                        <tr>
                            <td></td>
                            <td class="happenedmiddle">
                                <div class="happenedmiddle_line"></div>
                                <div class="happenedmiddle_top"></div>
                            </td>
                            <td></td>
                        </tr>
                    </table>
                    <!--<div style="width: 100%; height: 2.7rem;"></div>-->
                </div>
            </div>
            <!--技术统计-->
            <div class="downchangrtab" style="display: none;">
                <div class="skillinfogarybg" id="stutsskillsdata">
                    <div class="skillinfo" v-for="(item, index) in skillsdata">
                        <li class="shotsontargets">
                            <div class="shotsontargets_left">
                                <p class="skillstextfonts">{{item.awayteamvalue}}</p>
                                <div class="sotl_bg">
                                    <div class="sotl_bgprogress"></div>
                                </div>
                            </div>
                            <div class="shotsontargets_middle">
                                <img :src="getmatchstatsimage(item.statstype)" />
                                <p class="shills_name">{{item.statstype}}</p>
                            </div>
                            <div class="shotsontargets_right">
                                <p class="skillstextfonts">{{item.hometeamvalue}}</p>
                                <div class="sotl_bg">
                                    <div class="sotl_bgprogress"></div>
                                </div>
                            </div>
                        </li>
                    </div>
                </div>
            </div>
        </div>
        <!--底部下单-->
        <div class="buttomorder">
            <!--金额输入-->
            <!--竞猜金额-->
            <div class="aboutmoney">
                <input type="text" name="" id="betmoney" class="gussmoney" value="竞猜金额" placeholder="" readonly="readonly" v-model="gussmoney" />
                <img src="img/clearbetmoney.png" class="cleargussmoney" id="cleargussmoney" />
                <!--余额-->
                <span class="balancemoney" id="minemoney">我的余额:888</span>
                <!--下注金额-->
                <div class="diffgussmoney" style="text-align:center;">
                    <ul>
                        <li name="bettingmoney" class="difgumoncom" val="100">+100</li>
                        <li name="bettingmoney" class="difgumoncom" val="500">+500</li>
                        <li name="bettingmoney" class="difgumoncom" val="1000">+1000</li>
                        <li class="difgumoncom" id="allin" style="line-height: 0.5rem;">
                            <p style="height: 0.3rem;">all <span style="margin-left: 0.05rem;">in</span></p>
                            <p id="allinvalue" style="height: 0.3rem;">100</p>
                        </li>
                    </ul>
                </div>
                <!--确定-->
                <p class="subsure subsurered" style="text-align:center;" onclick="createorder();" id="subsure">
                    确定
                </p>
            </div>
        </div>
        <!--下单成功后遮罩层-->
        <div id="overlay" class="overlay"></div>
    </div>
    <div>
        <img src="img/goal/goalball.png" />
        <img src="img/goal/goal.png" />
        <img src="img/goal/fireworks.png" />
    </div>
    <script src="js/jquery-1.10.2.min.js" type="text/javascript" charset="utf-8"></script>
    <script src="js/vue.min.js" type="text/javascript" charset="utf-8"></script>
    <script src="js/common.js?ver=012902" type="text/javascript" charset="utf-8"></script>
    <script src="js/jquery.cookie.min.js"></script>
    <script src="js/mask.js?ver=012901"></script>
    <script type="text/javascript" src="js/eventdetailsnew.js?ver=012908"></script>
    <script src="../js/animation.js"></script>
</body>
</html>

总结

以上所述是小编给大家介绍的html5 canvas图像模糊完美解决办法,希望对大家有所帮助

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