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    HTML5 - 09.canvas : 그림판 1차 코드

    Posted by Godffs on 2014. 3. 22. 14:12 in jQuery | javascript | CSS /

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    HTML5 Canvas를 이용하여 그림판을 만들고, 호스팅 서비스에 올려서 모바일로 직접 실행했는데 잘됩니다.

    잘되긴 하는데...모바일에 있는 기본 인터넷 브라우저로 열어서 보니 드래그가 안되고...;;;

    네이버 웹을 통해서 접속하여 확인하니 잘 됩니다...;;;

    (컴퓨터에 익스플로러, 파이어폭스, 크롬에서는 잘 됩니다.)

    이유가 먼지...아시는분 답변 부탁드립니다.

     ex08.Gradation.html
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    <!DOCTYPE html>
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
        <title></title>
        <meta charset="euc-kr" /> 
        <meta name="viewport" content="width=device-width, initial-scale=1" />
    </head>
    <body>
        <table border="1" style="width:500px; height:500px;">
            <tr style="height:80px;">
                <td style="background-color:red; cursor:pointer;" onclick="fn_Color('red');">빨강색</td>
                <td style="background-color:green; cursor:pointer;" onclick="fn_Color('green');">녹색</td>
                <td style="background-color:blue; cursor:pointer;" onclick="fn_Color('blue');">파랑색</td>
                <td style="background-color:yellow; cursor:pointer;" onclick="fn_Color('yellow');">노랑색</td>
                <td style="background-color:pink; cursor:pointer;" onclick="fn_Color('pink');">핑크색</td>
                <td style="background-color:white; cursor:pointer;" onclick="fn_Color('white');">삼각형</td>
                <td style="background-color:white; cursor:pointer;" onclick="fn_Color('sketch');">드래그</td>
                
            </tr>
            <tr style="width:100%; height:420px;">
                <td colspan="5">
                    <canvas id="can1" width="500" height="420" 
                        style="background-color:yellow;cursor:crosshair;">
                    </canvas>
     
                    <script type="text/javascript">
                        var canvas = document.getElementById("can1");
                        var cv = canvas.getContext("2d");
                        var event_Chk;
                        var x, y;
     
                        var state_Coloe = "rgb(0, 0, 0)";
                        var eraser = false;
     
                        function fn_Clear() {
                            cv.clearRect(0, 0, canvas.width, canvas.height);
                        };
     
                        function fn_Color(color) {
                            switch (color)
                            {
                                case "red":
                                    state_Coloe = "rgb(255, 0, 0)";
                                    break;
                                case "green":
                                    state_Coloe = "rgb(29, 219, 22)";
                                    break;
                                case "blue":
                                    state_Coloe = "rgb(1, 0, 255)";
                                    break;
                                case "yellow":
                                    state_Coloe = "rgb(255, 187, 0)";
                                    break;
                                case "pink":
                                    state_Coloe = "rgb(255, 0, 127)";
                                    break;
                                case "white":
                                    fn_Triangle();
                                    break;
                                case "sketch":
                                    fn_Sketch();
                                    break;
                            }
                            alert(state_Coloe);
                        };
     
                        function fn_Sketch() {
                            canvas.onmousedown = function (event) {
                                var x = event.x;
                                var y = event.y;
     
                                cv.beginPath();
     
                                cv.moveTo(x, y);
                                cv.stroke();
                                cv.lineWidth = 3;
                            };
     
                            canvas.onmouseup = function (event) {
                                var x = event.x;
                                var y = event.y;
     
                                cv.lineTo(x, y);
                                cv.stroke();
                                cv.lineWidth = 3;
     
                                cv.closePath();
                            };
                        };
     
                        function fn_Triangle() {
                            cv.beginPath(); //패스를 초기화
     
                            cv.moveTo(50, 0);      //시작위치 X,Y좌표
                            cv.lineTo(0, 50);      //선 그리기
                            cv.lineTo(100, 50);    //선 그리기
     
                            cv.closePath();         //그리기 종료
                            cv.fillStyle = "rgb(0,0,255)";
                            cv.fill();              //삼각형 그리기 렌더링
                        };
     
                        canvas.addEventListener('mousedown', function (event) {
                            event_Chk = true;
     
                            var rect = canvas.getBoundingClientRect();
     
                            x = event.clientX - rect.left;
                            y = event.clientY - rect.top;
     
                            cv.beginPath();
                            cv.moveTo(x, y);
                            cv.strokeStyle = state_Coloe;
                        }, false);
     
                        canvas.addEventListener('mousemove', function (event) {
     
                            if (event_Chk == true) {
                                var rect = canvas.getBoundingClientRect();
     
                                x = event.clientX - rect.left;
                                y = event.clientY - rect.top;
     
                                cv.lineTo(x, y);
                                cv.stroke();
                            }
                        }, false);
     
                        canvas.onmouseup = function () {
                            cv.closePath();
                            event_Chk = false;
                        };
                    </script>
                </td>
            </tr>
            <tr>
                <td style="cursor:pointer;" onclick="fn_Clear();">전체 삭제</td>
                <td></td>
                <td></td>
            </tr>
        </table>
    </body>
    </html>
     

    결과 화면입니다.

    컴퓨터에서 한 결과 이미지

     


    모바일 - 네이버 웹에서 실행 결과

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