Single Text Dimension Tool_DimensionsWithMarqueeSelection_Photoshop

#target photoshop

function generateDimensionsWithMarqueeSelection() {
    if (!app.documents.length) {
        alert("សូមបើក Document ជាមុនសិន!");
        return;
    }

    var doc = app.activeDocument;
    var startRulerUnits = app.preferences.rulerUnits;

    try {
        var dpi = doc.resolution;

        // Helper: បំប្លែង Point (1/72 inch) ទៅ Canvas Pixel
        function getCanvasPixel(anchorVal) {
            var num = 0;
            if (typeof anchorVal === "object" && anchorVal !== null) {
                if (typeof anchorVal.as === "function") return anchorVal.as('px');
                if ("value" in anchorVal) num = Number(anchorVal.value);
            } else {
                num = Number(anchorVal);
            }
            return (num / 72.0) * dpi;
        }

        // ១. ពិនិត្យមើល Rectangular Marquee Selection (បើមាន)
        var hasSelection = false;
        var selBounds = null; // [left, top, right, bottom] ជា pixels
        try {
            var sb = doc.selection.bounds;
            selBounds = [sb[0].as('px'), sb[1].as('px'), sb[2].as('px'), sb[3].as('px')];
            hasSelection = true;
        } catch (e) {
            hasSelection = false;
        }

        // Helper: ពិនិត្យមើលថាតើចំណុចកណ្ដាលនៃខ្សែបន្ទាត់ស្ថិតក្នុង Selection ឬទេ
        function isPointInSelection(px, py, bounds) {
            if (!bounds) return true;
            return (px >= bounds[0] && px <= bounds[2] && py >= bounds[1] && py <= bounds[3]);
        }

        // ២. ស្វែងរក Path/Line ទាំងអស់ក្នុង Document
        var targetPaths = [];
        try {
            if (doc.activePathItem) {
                targetPaths.push(doc.activePathItem);
            }
        } catch (e) {}

        if (targetPaths.length === 0 && doc.pathItems.length > 0) {
            for (var p = 0; p < doc.pathItems.length; p++) {
                targetPaths.push(doc.pathItems[p]);
            }
        }

        if (targetPaths.length === 0) {
            return;
        }

        // ៣. ស្រង់ទិន្នន័យពី Path និង Filter តាម Marquee Selection
        var rawSegments = [];

        for (var tp = 0; tp < targetPaths.length; tp++) {
            var pathItem = targetPaths[tp];
            if (!pathItem.subPathItems) continue;

            for (var s = 0; s < pathItem.subPathItems.length; s++) {
                var subPath = pathItem.subPathItems[s];
                var pts = subPath.pathPoints;
                if (!pts || pts.length < 2) continue;

                var count = subPath.closed ? pts.length : pts.length - 1;

                for (var i = 0; i < count; i++) {
                    var p1 = pts[i].anchor;
                    var p2 = pts[(i + 1) % pts.length].anchor;

                    var x1 = getCanvasPixel(p1[0]);
                    var y1 = getCanvasPixel(p1[1]);
                    var x2 = getCanvasPixel(p2[0]);
                    var y2 = getCanvasPixel(p2[1]);

                    var midX = (x1 + x2) / 2;
                    var midY = (y1 + y2) / 2;

                    // បើមាន Selection ត្រូវពិនិត្យថាតើខ្សែស្ថិតក្នុង Selection ដែរឬទេ
                    if (hasSelection && !isPointInSelection(midX, midY, selBounds)) {
                        continue;
                    }

                    var dx = x2 - x1;
                    var dy = y2 - y1;
                    var distPx = Math.sqrt(dx * dx + dy * dy);

                    // រំលងជ្រុងខ្លីៗ (< 15px)
                    if (distPx < 15) continue;

                    rawSegments.push({ x1: x1, y1: y1, x2: x2, y2: y2, distPx: distPx });
                }
            }
        }

        // ៤. ប្រព័ន្ធលុបខ្សែស្របស្ទួន (Deduplication) ធានាចេញអក្សរតែ ១ គត់
        var cleanSegments = [];

        function isDuplicate(newSeg, existingList) {
            var midX1 = (newSeg.x1 + newSeg.x2) / 2;
            var midY1 = (newSeg.y1 + newSeg.y2) / 2;
            var ang1 = Math.atan2(newSeg.y2 - newSeg.y1, newSeg.x2 - newSeg.x1) * (180 / Math.PI);
            if (ang1 < 0) ang1 += 180;

            for (var e = 0; e < existingList.length; e++) {
                var ex = existingList[e];
                var midX2 = (ex.x1 + ex.x2) / 2;
                var midY2 = (ex.y1 + ex.y2) / 2;
                var ang2 = Math.atan2(ex.y2 - ex.y1, ex.x2 - ex.x1) * (180 / Math.PI);
                if (ang2 < 0) ang2 += 180;

                var dMid = Math.sqrt((midX1 - midX2)*(midX1 - midX2) + (midY1 - midY2)*(midY1 - midY2));
                var dAng = Math.abs(ang1 - ang2);
                if (dAng > 90) dAng = 180 - dAng;

                var lenDiff = Math.abs(newSeg.distPx - ex.distPx);

                if (dMid < 35 && dAng < 10 && lenDiff < 30) {
                    return true;
                }
            }
            return false;
        }

        for (var r = 0; r < rawSegments.length; r++) {
            if (!isDuplicate(rawSegments[r], cleanSegments)) {
                cleanSegments.push(rawSegments[r]);
            }
        }

        if (cleanSegments.length === 0) {
            alert(hasSelection ? "មិនមានខ្សែបន្ទាត់ នៅក្នុងតំបន់ Selection ទេ!" : "រកមិនឃើញ ខ្សែបន្ទាត់ ត្រឹមត្រូវទេ!");
            return;
        }

        // ៥. បង្កើត UI Dialog ជាមួយ ពុម្ពអក្សរ Khmer OS
        var titleText = hasSelection ? "Marquee Selected Dimensions Tool" : "Single Text Dimension Tool";
        var win = new Window("dialog", titleText, undefined, {resizeable: false});
        win.orientation = "column";
        win.alignChildren = ["fill", "top"];
        win.spacing = 10;
        win.margins = 12;

        var scaleGroup = win.add("group");
        scaleGroup.add("statictext", undefined, "Scale:");
        var scaleDropdown = scaleGroup.add("dropdownlist", undefined, ["1:1", "1:10", "1:100"]);
        scaleDropdown.selection = 0;

        var decGroup = win.add("group");
        decGroup.add("statictext", undefined, "ខ្ទង់ក្បៀស:");
        var decDropdown = decGroup.add("dropdownlist", undefined, ["00.0 cm", "00.00 cm"]);
        decDropdown.selection = 1;

        var chkShowAngle = win.add("checkbox", undefined, "បង្ហាញ មុំ Angle (°)");
        chkShowAngle.value = true;

        var fontGroup = win.add("group");
        fontGroup.add("statictext", undefined, "Font Size (pt):");
        var txtFontSize = fontGroup.add("edittext", undefined, "42");
        txtFontSize.characters = 5;

        var offsetGroup = win.add("group");
        offsetGroup.add("statictext", undefined, "Offset Gap (px):");
        var txtOffset = offsetGroup.add("edittext", undefined, "120");
        txtOffset.characters = 5;

        var btnAction = win.add("button", undefined, "បង្កើតខ្នាត (" + cleanSegments.length + " ខ្សែ)");
        btnAction.size = [240, 35];
        var btnClose = win.add("button", undefined, "Close");

        // -------------------------------------------------------------
        // កំណត់ពុម្ពអក្សរ Khmer OS សម្រាប់ UI Dialog
        // -------------------------------------------------------------
        var khmerOSFont;
        try {
            khmerOSFont = ScriptUI.newFont("Khmer OS Siemreap", "REGULAR", 12);
        } catch (f1) {
            try {
                khmerOSFont = ScriptUI.newFont("Khmer OS", "REGULAR", 12);
            } catch (f2) {
                khmerOSFont = ScriptUI.newFont("Khmer OS System", "REGULAR", 12);
            }
        }

        function applyKhmerFont(container) {
            if (container.graphics && khmerOSFont) {
                container.graphics.font = khmerOSFont;
            }
            if (container.children) {
                for (var c = 0; c < container.children.length; c++) {
                    applyKhmerFont(container.children[c]);
                }
            }
        }

        applyKhmerFont(win);
        // -------------------------------------------------------------

        var confirmed = false;
        var opts = {};

        btnAction.onClick = function() {
            opts.scaleMult = (scaleDropdown.selection.text === "1:10") ? 10 : ((scaleDropdown.selection.text === "1:100") ? 100 : 1);
            opts.decimals = (decDropdown.selection.index === 0) ? 1 : 2;
            opts.showAngle = chkShowAngle.value;
            opts.fontSize = parseInt(txtFontSize.text) || 42;
            opts.offsetPx = parseInt(txtOffset.text) || 120;
            confirmed = true;
            win.close();
        };

        btnClose.onClick = function() { win.close(); };

        win.center();
        win.show();

        if (!confirmed) return;

        // ៦. Deselect Marquee Selection រួចបង្កើត Text Layer
        if (hasSelection) {
            doc.selection.deselect();
        }

        app.preferences.rulerUnits = Units.PIXELS;

        var dimGroup = doc.layerSets.add();
        dimGroup.name = "Marquee_Text_Dimensions_Group";

        var redColor = new SolidColor();
        redColor.rgb.red = 255;
        redColor.rgb.green = 0;
        redColor.rgb.blue = 0;

        for (var j = 0; j < cleanSegments.length; j++) {
            var seg = cleanSegments[j];
            var x1 = seg.x1, y1 = seg.y1, x2 = seg.x2, y2 = seg.y2;
            var distPx = seg.distPx;

            if (x1 > x2 || (Math.abs(x1 - x2) < 0.1 && y1 > y2)) {
                var tempX = x1; x1 = x2; x2 = tempX;
                var tempY = y1; y1 = y2; y2 = tempY;
            }

            var dx = x2 - x1;
            var dy = y2 - y1;

            var angleRad = Math.atan2(dy, dx);
            var angleDeg = angleRad * (180 / Math.PI);

            var distCm = (distPx / dpi) * 2.54;
            var actualCm = distCm * opts.scaleMult;

            var textVal = actualCm.toFixed(opts.decimals) + " cm";
            if (opts.showAngle) {
                textVal += " ( " + angleDeg.toFixed(2) + "° )";
            }

            // Vector កែងរំកិលឡើងលើ
            var ux = dx / distPx;
            var uy = dy / distPx;
            var nx = -uy;
            var ny = ux;

            // ទីតាំងអក្សរ
            var midX = (x1 + x2) / 2;
            var midY = (y1 + y2) / 2;
            var targetX = midX + nx * opts.offsetPx;
            var targetY = midY + ny * opts.offsetPx;

            // បង្កើត Text Layer
            var textLayer = dimGroup.artLayers.add();
            textLayer.kind = LayerKind.TEXT;
            textLayer.name = "Dim_" + textVal;

            var textItem = textLayer.textItem;
            textItem.contents = textVal;
            textItem.justification = Justification.CENTER;
            textItem.size = opts.fontSize;
            textItem.color = redColor;
            textItem.position = [targetX, targetY];

            textLayer.rotate(angleDeg, AnchorPosition.MIDDLECENTER);

            // តម្រឹម Bounding Box
            var b = textLayer.bounds;
            var curCenterX = (b[0].value + b[2].value) / 2;
            var curCenterY = (b[1].value + b[3].value) / 2;

            var shiftX = targetX - curCenterX;
            var shiftY = targetY - curCenterY;

            textLayer.translate(shiftX, shiftY);
        }

    } catch (err) {
        alert("Error: " + err);
    } finally {
        app.preferences.rulerUnits = startRulerUnits;
    }
}

generateDimensionsWithMarqueeSelection();