moebius-web

tools/export.js

function exportTool(editor, toolbar) {
    "use strict";

    function toDataURL(bytes) {
        return "data:application/octet-stream;base64," + btoa(String.fromCharCode.apply(null, bytes));
    }

    function getHighestRow(input) {
        var inputIndex, highest;
        highest = 26;
        for (inputIndex = 0; inputIndex < input.length; inputIndex += 3) {
            if (input[inputIndex]) {
                highest = Math.max(Math.ceil(inputIndex / 240), highest);
            }
        }
        return highest;
    }

    // function toBinFormat(input) {
    //     var output, inputIndex, outputIndex, highest, end;
    //     highest = getHighestRow(input);
    //     output = new Uint8Array((input.length / 3 * 2) + 11);
    //     output.set(new Uint8Array([88, 66, 73, 78, 26, 80, 0, highest, 0, 16, 0]), 0);
    //     for (inputIndex = 0, outputIndex = 11, end = highest * 80 * 3; inputIndex < end; inputIndex += 3, outputIndex += 2) {
    //         output[outputIndex] = input[inputIndex];
    //         output[outputIndex + 1] = input[inputIndex + 1] + (input[inputIndex + 2] << 4);
    //     }
    //     return output;
    // }

    function toANSFormat(input) {
        var highest, inputIndex, end, charCode, fg, bg, bold, currentFg, currentBg, currentBold, attribs, attribIndex, output;

        function ansiColor(binColor) {
            switch (binColor) {
            case 1:
                return 4;
            case 3:
                return 6;
            case 4:
                return 1;
            case 6:
                return 3;
            default:
                return binColor;
            }
        }

        highest = getHighestRow(input);
        output = [27, 91, 48, 109];
        for (inputIndex = 0, end = highest * 80 * 3, currentFg = 7, currentBg = 0, currentBold = false; inputIndex < end; inputIndex += 3) {
            attribs = [];
            charCode = input[inputIndex];
            fg = input[inputIndex + 1];
            bg = input[inputIndex + 2];
            if (fg > 7) {
                bold = true;
                fg = fg - 8;
            } else {
                bold = false;
            }
            if (bold !== currentBold) {
                if (bold) {
                    attribs.push([49]);
                    currentBold = true;
                } else {
                    attribs.push([48]);
                    currentFg = 7;
                    currentBg = 0;
                    currentBold = false;
                }
            }
            if (fg !== currentFg) {
                attribs.push([51, 48 + ansiColor(fg)]);
                currentFg = fg;
            }
            if (bg !== currentBg) {
                attribs.push([52, 48 + ansiColor(bg)]);
                currentBg = bg;
            }
            if (attribs.length) {
                output.push(27, 91);
                for (attribIndex = 0; attribIndex < attribs.length; ++attribIndex) {
                    output = output.concat(attribs[attribIndex]);
                    if (attribIndex !== attribs.length - 1) {
                        output.push(59);
                    } else {
                        output.push(109);
                    }
                }
            }
            output.push(charCode);
        }
        return new Uint8Array(output);
    }

    function init() {
        var modal;

        function dismiss() {
            modal.remove();
            editor.startListening();
            toolbar.startListening();
        }

        modal = modalBox();
        modal.addButton("download", {"textContent": "Download ansiedit.ans", "href": toDataURL(toANSFormat(editor.image)), "onclick": dismiss, "download": "ansiedit.ans"});
        // modal.addButton("download", {"textContent": "Download ansiedit.xb", "href": toDataURL(toBinFormat(editor.image)), "onclick": dismiss, "download": "ansiedit.xb"});
        modal.addButton("cancel", {"textContent": "Cancel", "href": "#", "onclick": function (evt) {
            evt.preventDefault();
            dismiss();
        }});

        editor.stopListening();
        toolbar.stopListening();
        modal.init();

        return false;
    }

    function toString() {
        return "Export";
    }

    return {
        "init": init,
        "toString": toString,
        "uid": "export"
    };
}