Windows PC Image Software

function processImage(originalImg, windowTitle = "MS Paint", desktopColor = "#008080") {
    // Basic constants for layout
    const C_MARGIN_X = 50;
    const C_MARGIN_Y = 50;
    const MIN_WIN_W = 200;

    const iw = originalImg.width;
    const ih = originalImg.height;

    // Calculate window bounds
    const winW = Math.max(iw + 8, MIN_WIN_W);
    const winH = ih + 28;

    // Create the canvas
    const c = document.createElement('canvas');
    c.width = winW + C_MARGIN_X * 2;
    c.height = winH + C_MARGIN_Y * 2;
    const ctx = c.getContext('2d');

    // 1. Draw "Desktop" background
    ctx.fillStyle = desktopColor;
    ctx.fillRect(0, 0, c.width, c.height);

    // 2. Draw standard Windows 95 style base window frame
    const winX = C_MARGIN_X;
    const winY = C_MARGIN_Y;

    // Base background color
    ctx.fillStyle = '#c0c0c0';
    ctx.fillRect(winX, winY, winW, winH);

    // Outer borders
    ctx.fillStyle = '#ffffff';                 // Top outer highlight
    ctx.fillRect(winX, winY, winW, 1);
    ctx.fillRect(winX, winY, 1, winH);         // Left outer highlight
    ctx.fillStyle = '#000000';                 // Bottom outer shadow
    ctx.fillRect(winX, winY + winH - 1, winW, 1);
    ctx.fillRect(winX + winW - 1, winY, 1, winH); // Right outer shadow

    // Inner borders
    ctx.fillStyle = '#dfdfdf';                 // Top inner highlight
    ctx.fillRect(winX + 1, winY + 1, winW - 2, 1);
    ctx.fillRect(winX + 1, winY + 1, 1, winH - 2); // Left inner highlight
    ctx.fillStyle = '#808080';                 // Bottom inner shadow
    ctx.fillRect(winX + 1, winY + winH - 2, winW - 2, 1);
    ctx.fillRect(winX + winW - 2, winY + 1, 1, winH - 2); // Right inner shadow

    // 3. Draw Title Bar
    const tx = winX + 3;
    const ty = winY + 3;
    const tw = winW - 6;
    const th = 18;
    
    // Title gradient/solid
    ctx.fillStyle = '#000080';
    ctx.fillRect(tx, ty, tw, th);

    // 4. Draw Small generic picture icon in title bar
    const icX = tx + 2;
    const icY = ty + 2;
    ctx.fillStyle = '#ffffff';
    ctx.fillRect(icX, icY, 14, 14);
    ctx.lineWidth = 1;
    ctx.strokeStyle = '#000000';
    ctx.strokeRect(icX + 0.5, icY + 0.5, 13, 13);
    // Draw tiny mountain in icon
    ctx.beginPath();
    ctx.moveTo(icX + 2, icY + 12);
    ctx.lineTo(icX + 6, icY + 5);
    ctx.lineTo(icX + 10, icY + 12);
    ctx.fillStyle = '#808080';
    ctx.fill();
    // Draw tiny sun in icon
    ctx.fillStyle = '#ffff00';
    ctx.fillRect(icX + 9, icY + 3, 3, 3);

    // 5. Draw Title Text
    ctx.fillStyle = '#ffffff';
    ctx.font = 'bold 11px "Tahoma", "Arial", sans-serif';
    ctx.textBaseline = 'middle';
    
    // Prevent text from overlapping buttons
    const maxTextWidth = tw - (16 * 3 + 12) - 20; 
    ctx.fillText(windowTitle, tx + 20, ty + th / 2 + 1, maxTextWidth);

    // 6. Draw Window Buttons (Close, Maximize, Minimize)
    function drawWin95Button(bx, by, bw, bh) {
        ctx.fillStyle = '#c0c0c0';
        ctx.fillRect(bx, by, bw, bh);
        ctx.fillStyle = '#ffffff';
        ctx.fillRect(bx, by, bw, 1);
        ctx.fillRect(bx, by, 1, bh);
        ctx.fillStyle = '#000000';
        ctx.fillRect(bx, by + bh - 1, bw, 1);
        ctx.fillRect(bx + bw - 1, by, 1, bh);
        ctx.fillStyle = '#808080';
        ctx.fillRect(bx + 1, by + bh - 2, bw - 2, 1);
        ctx.fillRect(bx + bw - 2, by + 1, 1, bh - 2);
        ctx.fillStyle = '#dfdfdf';
        ctx.fillRect(bx + 1, by + 1, bw - 3, 1);
        ctx.fillRect(bx + 1, by + 1, 1, bh - 3);
    }

    const btnW = 16, btnH = 14;
    
    // Close Button
    const cbx = tx + tw - btnW - 2;
    const cby = ty + 2;
    drawWin95Button(cbx, cby, btnW, btnH);
    // Draw crisp 'X' mark
    ctx.fillStyle = '#000000';
    for (let i = 0; i < 6; i++) {
        ctx.fillRect(cbx + 5 + i, cby + 4 + i, 1, 1); // Diagonal \
        ctx.fillRect(cbx + 6 + i, cby + 4 + i, 1, 1); // Thickening \
        ctx.fillRect(cbx + 10 - i, cby + 4 + i, 1, 1); // Diagonal /
        ctx.fillRect(cbx + 11 - i, cby + 4 + i, 1, 1); // Thickening /
    }

    // Maximize Button
    const mbx = cbx - btnW;
    drawWin95Button(mbx, cby, btnW, btnH);
    ctx.fillStyle = '#000000';
    ctx.fillRect(mbx + 3, cby + 2, 10, 2); // Thicker top border
    ctx.fillRect(mbx + 3, cby + 4, 1, 7);  // Left border
    ctx.fillRect(mbx + 12, cby + 4, 1, 7); // Right border
    ctx.fillRect(mbx + 3, cby + 10, 10, 1); // Bottom border

    // Minimize Button
    const mibx = mbx - btnW;
    drawWin95Button(mibx, cby, btnW, btnH);
    ctx.fillStyle = '#000000';
    ctx.fillRect(mibx + 4, cby + 10, 8, 2);

    // 7. Calculate centered layout for original image inside window
    const ix = winX + Math.floor((winW - iw) / 2);
    const iy = winY + 24; // Just below the titlebar with margin

    // 8. Draw classic 1px sunken inset border around the image
    ctx.fillStyle = '#808080';
    ctx.fillRect(ix - 1, iy - 1, iw + 2, 1); // Sunken top
    ctx.fillRect(ix - 1, iy - 1, 1, ih + 2); // Sunken left
    
    ctx.fillStyle = '#ffffff';
    ctx.fillRect(ix - 1, iy + ih, iw + 2, 1); // Raised bottom reflection
    ctx.fillRect(ix + iw, iy - 1, 1, ih + 2); // Raised right reflection

    // 9. Draw the actual image
    ctx.drawImage(originalImg, ix, iy, iw, ih);

    return c;
}