Fase 3 feedback round: style preview, icon upload, font choice, optional bitcoin amount, WPA3

- Default the Owner select to the creator's own account instead of "All", so
  superadmin-created codes no longer silently become visible to every admin
  (the underlying NULL-fallback sharing behavior for an explicit "All" choice
  is unchanged).
- Add a live color/precision/size preview swatch next to the preset picker.
- Let the frame text use a chosen DejaVu font + font size instead of a fixed
  GD bitmap font.
- Add an optional self-uploaded icon rendered above the qr code (not embedded
  in it, so scanability is unaffected).
- Make the Bitcoin qr amount optional; a standing wallet address is useful
  without forcing a one-off amount per code.
- Add a WPA3 option to the WiFi qr encryption select.
- Fix a real bug surfaced while testing the preview/style JS: qrcode_options.php
  was included once per static qr type (16 times on one page) and each
  inclusion re-executed <script src="qrcode-style-tools.js">, so every button
  click fired once per type - e.g. saving one preset wrote 16 duplicate rows,
  and every tab except the first ("Text") had dead random-style/preset
  buttons since only the first DOM match ever got a listener. Moved the
  script include to load once per page and rewrote the JS to scope every
  lookup to the triggering element's own tab-pane/form instead of relying on
  getElementById's first-match behavior.

src/dist/js/qrcode-style-tools.js

@@ -1,12 +1,23 @@
 // Preset system + random style button for the qr code generation forms (Fase 3, priority 2).
+//
+// The static qr "add" page stacks all qr-type forms (text/email/.../wifi/bitcoin/...) into
+// the DOM at once as Bootstrap tab-panes, and every one of them repeats the same element ids
+// (foreground, background, size, random_style_btn, ...). getElementById/getElementsBy* only
+// ever finds the *first* of those (the "Text" tab), so every helper below is scoped to the
+// specific tab-pane/form the triggering element lives in, and wired up via querySelectorAll
+// so every tab gets working listeners, not just the first one.
 (function () {
     function csrfToken() {
         var meta = document.querySelector('meta[name="csrf-token"]');
         return meta ? meta.getAttribute('content') : '';
     }
 
-    function setColor(id, hex) {
+    function scopeOf(el) {
-        var input = document.getElementById(id);
+        return el.closest('.tab-pane') || el.closest('form') || document;
+    }
+
+    function setColor(scope, id, hex) {
+        var input = scope.querySelector('#' + id);
         if (!input) {
             return;
         }
@@ -27,12 +38,35 @@
         return '#' + ('000000' + value).slice(-6);
     }
 
-    function loadPresets() {
+    function updateStylePreview(scope) {
-        var select = document.getElementById('preset_select');
+        var swatch = scope.querySelector('#style_preview_swatch');
-        if (!select) {
+        var text = scope.querySelector('#style_preview_text');
+        if (!swatch || !text) {
             return;
         }
 
+        var foreground = scope.querySelector('#foreground');
+        var background = scope.querySelector('#background');
+        var levelSelect = scope.querySelector('select[name="level"]');
+        var sizeSelect = scope.querySelector('#size');
+
+        var fg = foreground ? foreground.value : '#000000';
+        var bg = background ? background.value : '#ffffff';
+
+        swatch.style.background = bg;
+        swatch.style.borderColor = fg;
+
+        var parts = [];
+        if (levelSelect) {
+            parts.push('Precision: ' + levelSelect.value);
+        }
+        if (sizeSelect) {
+            parts.push('Size: ' + sizeSelect.value + 'px');
+        }
+        text.textContent = parts.join(' · ');
+    }
+
+    function loadPresetsInto(select) {
         fetch('presets.php?action=list')
             .then(function (response) { return response.json(); })
             .then(function (json) {
@@ -54,43 +88,69 @@
     }
 
     document.addEventListener('DOMContentLoaded', function () {
-        loadPresets();
+        document.querySelectorAll('#preset_select').forEach(loadPresetsInto);
 
-        var randomBtn = document.getElementById('random_style_btn');
+        document.querySelectorAll('#style_preview').forEach(function (row) {
-        if (randomBtn) {
+            updateStylePreview(scopeOf(row));
-            randomBtn.addEventListener('click', function () {
-                setColor('foreground', randomHexColor());
-                setColor('background', randomHexColor());
         });
-        }
 
-        var presetSelect = document.getElementById('preset_select');
+        document.querySelectorAll('#foreground, #background').forEach(function (input) {
-        if (presetSelect) {
+            input.addEventListener('change', function () {
+                updateStylePreview(scopeOf(input));
+            });
+        });
+
+        document.querySelectorAll('select[name="level"]').forEach(function (select) {
+            select.addEventListener('change', function () {
+                updateStylePreview(scopeOf(select));
+            });
+        });
+
+        document.querySelectorAll('#size').forEach(function (select) {
+            select.addEventListener('change', function () {
+                updateStylePreview(scopeOf(select));
+            });
+        });
+
+        document.querySelectorAll('#random_style_btn').forEach(function (randomBtn) {
+            randomBtn.addEventListener('click', function () {
+                var scope = scopeOf(randomBtn);
+                setColor(scope, 'foreground', randomHexColor());
+                setColor(scope, 'background', randomHexColor());
+                updateStylePreview(scope);
+            });
+        });
+
+        document.querySelectorAll('#preset_select').forEach(function (presetSelect) {
             presetSelect.addEventListener('change', function () {
                 var option = presetSelect.options[presetSelect.selectedIndex];
                 if (!option.value) {
                     return;
                 }
 
-                setColor('foreground', option.dataset.foreground);
+                var scope = scopeOf(presetSelect);
-                setColor('background', option.dataset.background);
 
-                var levelSelect = document.querySelector('select[name="level"]');
+                setColor(scope, 'foreground', option.dataset.foreground);
+                setColor(scope, 'background', option.dataset.background);
+
+                var levelSelect = scope.querySelector('select[name="level"]');
                 if (levelSelect) {
                     levelSelect.value = option.dataset.level;
                 }
 
-                var sizeSelect = document.getElementById('size');
+                var sizeSelect = scope.querySelector('#size');
                 if (sizeSelect) {
                     sizeSelect.value = option.dataset.size;
                 }
-            });
-        }
 
-        var saveBtn = document.getElementById('preset_save_btn');
+                updateStylePreview(scope);
-        if (saveBtn) {
+            });
+        });
+
+        document.querySelectorAll('#preset_save_btn').forEach(function (saveBtn) {
             saveBtn.addEventListener('click', function () {
-                var nameInput = document.getElementById('preset_name');
+                var scope = scopeOf(saveBtn);
+                var nameInput = scope.querySelector('#preset_name');
                 var name = nameInput.value.trim();
 
                 if (!name) {
@@ -98,13 +158,18 @@
                     return;
                 }
 
+                var foreground = scope.querySelector('#foreground').value;
+                var background = scope.querySelector('#background').value;
+                var level = scope.querySelector('select[name="level"]').value;
+                var size = scope.querySelector('#size').value;
+
                 var body = new URLSearchParams();
                 body.set('action', 'save');
                 body.set('name', name);
-                body.set('foreground', document.getElementById('foreground').value);
+                body.set('foreground', foreground);
-                body.set('background', document.getElementById('background').value);
+                body.set('background', background);
-                body.set('level', document.querySelector('select[name="level"]').value);
+                body.set('level', level);
-                body.set('size', document.getElementById('size').value);
+                body.set('size', size);
 
                 fetch('presets.php', {
                     method: 'POST',
@@ -118,24 +183,33 @@
                             return;
                         }
 
+                        // The preset list is shared across every tab, so mirror the new
+                        // option into every preset_select on the page, not just this one.
+                        document.querySelectorAll('#preset_select').forEach(function (select) {
                             var option = document.createElement('option');
                             option.value = json.data.id;
                             option.textContent = json.data.name;
-                        option.dataset.foreground = document.getElementById('foreground').value;
+                            option.dataset.foreground = foreground;
-                        option.dataset.background = document.getElementById('background').value;
+                            option.dataset.background = background;
-                        option.dataset.level = document.querySelector('select[name="level"]').value;
+                            option.dataset.level = level;
-                        option.dataset.size = document.getElementById('size').value;
+                            option.dataset.size = size;
-                        presetSelect.appendChild(option);
+                            select.appendChild(option);
-                        presetSelect.value = option.value;
+
+                            if (select === scope.querySelector('#preset_select')) {
+                                select.value = option.value;
+                            }
+                        });
+
                         nameInput.value = '';
                     })
                     .catch(function () { alert('Could not save preset (network error).'); });
             });
-        }
+        });
 
-        var deleteBtn = document.getElementById('preset_delete_btn');
+        document.querySelectorAll('#preset_delete_btn').forEach(function (deleteBtn) {
-        if (deleteBtn) {
             deleteBtn.addEventListener('click', function () {
+                var scope = scopeOf(deleteBtn);
+                var presetSelect = scope.querySelector('#preset_select');
                 var option = presetSelect.options[presetSelect.selectedIndex];
                 if (!option.value) {
                     return;
@@ -157,13 +231,19 @@
                     .then(function (response) { return response.json(); })
                     .then(function (json) {
                         if (json.status === 200) {
-                            option.remove();
+                            // Remove the matching option from every preset_select on the page.
+                            document.querySelectorAll('#preset_select').forEach(function (select) {
+                                var match = select.querySelector('option[value="' + option.value + '"]');
+                                if (match) {
+                                    match.remove();
+                                }
+                            });
                         } else {
                             alert('Could not delete preset: ' + json.data);
                         }
                     })
                     .catch(function () { alert('Could not delete preset (network error).'); });
             });
-        }
+        });
     });
 })();

src/dynamic_qrcode.php

@@ -37,7 +37,7 @@ if($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST["edit"])) {
         $dynamic_qrcode_instance->editQrcode($_POST);
 }
 
-if($_SERVER["REQUEST_METHOD"] === "POST" && !isset($_POST["edit"])) {
+if($_SERVER["REQUEST_METHOD"] === "POST" && !isset($_POST["edit"]) && !isset($_POST["del_id"])) {
     if(
         isset($_POST["foreground"]) &&
         isset($_POST["background"]) &&
@@ -45,9 +45,18 @@ if($_SERVER["REQUEST_METHOD"] === "POST" && !isset($_POST["edit"])) {
         isset($_POST["filename"]) &&
         isset($_POST["format"]) &&
         isset($_POST["id_owner"])
-    )
+    ) {
+        $icon_upload = qr_handle_icon_upload('icon');
+        if (!$icon_upload['ok']) {
+            $_SESSION['failure'] = $icon_upload['error'];
+            header('Location: ' . basename(__FILE__));
+            exit;
+        }
+        $_POST['icon_tmp_path'] = $icon_upload['path'];
+
         $dynamic_qrcode_instance->addQrcode($_POST);
     }
+}
 ?>
 <!DOCTYPE html>
 <html lang="en">

src/forms/form_dynamic_add.php

@@ -54,6 +54,7 @@
     <div class="col-sm-12 mb-2">
         <div class="row">
             <div class="col-6 col-md-3">
+                <label>&nbsp;</label>
                 <button type="button" id="random_style_btn" class="btn btn-outline-secondary btn-block">
                     <i class="fa fa-dice"></i> Random style
                 </button>
@@ -80,6 +81,14 @@
                     </div>
                 </div>
             </div>
+
+            <div class="col-6 col-md-3">
+                <label>Style preview</label>
+                <div id="style_preview" class="d-flex align-items-center">
+                    <span id="style_preview_swatch" style="display:inline-block;width:38px;height:38px;border:3px solid #000;background:#fff;border-radius:4px;"></span>
+                    <small id="style_preview_text" class="ml-2 text-muted"></small>
+                </div>
+            </div>
         </div>
     </div>
 
@@ -136,6 +145,35 @@
             <small class="form-text text-muted">Optional label rendered below the code. Only applies to PNG/JPEG/GIF, not SVG/EPS.</small>
         </div>
     </div>
+
+    <div class="col-6 col-md-2">
+        <div class="form-group">
+            <label for="frame_font">Frame font</label>
+            <select name="frame_font" id="frame_font" class="form-control">
+                <option value="sans" selected>Sans</option>
+                <option value="sans-bold">Sans Bold</option>
+                <option value="serif">Serif</option>
+                <option value="serif-bold">Serif Bold</option>
+                <option value="mono">Monospace</option>
+                <option value="mono-bold">Monospace Bold</option>
+            </select>
+        </div>
+    </div>
+
+    <div class="col-6 col-md-2">
+        <div class="form-group">
+            <label for="frame_font_size">Frame font size</label>
+            <input type="number" name="frame_font_size" id="frame_font_size" value="16" min="8" max="60" class="form-control">
+        </div>
+    </div>
+
+    <div class="col-sm-4">
+        <div class="form-group">
+            <label for="icon">Icon above QR code</label>
+            <input type="file" name="icon" id="icon" accept="image/png,image/jpeg,image/gif" class="form-control-file">
+            <small class="form-text text-muted">Optional. PNG/JPEG/GIF, max 1MB. Shown above the code (not embedded in it). Only applies to PNG/JPEG/GIF output.</small>
+        </div>
+    </div>
   </div>
 </div>
 
@@ -146,7 +184,7 @@
                 <div class="form-group">
                     <label for="id_owner">Owner *</label>
                     <select name="id_owner" class="form-control">
-                        <option value="" selected>All</option>
+                        <option value="">All (shared with every admin)</option>
                         <?php
 
                         require_once BASE_PATH . '/lib/Users/Users.php';
@@ -154,8 +192,9 @@
                         $users = $users_instance->getAllUsers();
 
                         foreach ($users as $user) {
+                            $is_self = (int) $user["id"] === (int) $_SESSION["user_id"];
                         ?>
-                        <option value="<?php echo $user["id"];?>"><?php echo $user["username"];?></option>
+                        <option value="<?php echo $user["id"];?>" <?php echo $is_self ? 'selected' : ''; ?>><?php echo $user["username"];?></option>
                         <?php } ?>
                     </select>
                 </div>

src/forms/form_static_add.php

@@ -105,4 +105,6 @@
                 </div>
               </div>
     </div><!-- /.card -->
+
+    <script src="dist/js/qrcode-style-tools.js?nocache=<?php print rand();?>"></script>
 </fieldset>

src/forms/qrcode_options.php

@@ -58,6 +58,7 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
     <div class="col-sm-12 mb-2">
         <div class="row">
             <div class="col-6 col-md-3">
+                <label>&nbsp;</label>
                 <button type="button" id="random_style_btn" class="btn btn-outline-secondary btn-block">
                     <i class="fa fa-dice"></i> Random style
                 </button>
@@ -84,10 +85,25 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
                     </div>
                 </div>
             </div>
+
+            <div class="col-6 col-md-3">
+                <label>Style preview</label>
+                <div id="style_preview" class="d-flex align-items-center">
+                    <span id="style_preview_swatch" style="display:inline-block;width:38px;height:38px;border:3px solid #000;background:#fff;border-radius:4px;"></span>
+                    <small id="style_preview_text" class="ml-2 text-muted"></small>
+                </div>
+            </div>
         </div>
     </div>
 
-    <script src="dist/js/qrcode-style-tools.js?nocache=<?php print rand();?>"></script>
+    <!--
+        Note: no <script src="dist/js/qrcode-style-tools.js"> tag here on purpose. This
+        partial is included once per qr type on the static "add" page (form_static_add.php),
+        which stacks all types into the DOM as tab-panes; including the script here would load
+        and execute it once per type, each execution re-attaching its own listeners to every
+        button on the page. The script is included exactly once by the pages that use this
+        partial (form_static_add.php and form_dynamic_add.php).
+    -->
 
     <!-- Its use is not recommended. Read the documentation
     <div class="form-group">
@@ -130,6 +146,35 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
             <small class="form-text text-muted">Optional label rendered below the code. Only applies to PNG/JPEG/GIF, not SVG/EPS.</small>
         </div>
     </div>
+
+    <div class="col-6 col-md-2">
+        <div class="form-group">
+            <label for="frame_font">Frame font</label>
+            <select name="frame_font" id="frame_font" class="form-control">
+                <option value="sans" selected>Sans</option>
+                <option value="sans-bold">Sans Bold</option>
+                <option value="serif">Serif</option>
+                <option value="serif-bold">Serif Bold</option>
+                <option value="mono">Monospace</option>
+                <option value="mono-bold">Monospace Bold</option>
+            </select>
+        </div>
+    </div>
+
+    <div class="col-6 col-md-2">
+        <div class="form-group">
+            <label for="frame_font_size">Frame font size</label>
+            <input type="number" name="frame_font_size" id="frame_font_size" value="16" min="8" max="60" class="form-control">
+        </div>
+    </div>
+
+    <div class="col-sm-4">
+        <div class="form-group">
+            <label for="icon">Icon above QR code</label>
+            <input type="file" name="icon" id="icon" accept="image/png,image/jpeg,image/gif" class="form-control-file">
+            <small class="form-text text-muted">Optional. PNG/JPEG/GIF, max 1MB. Shown above the code (not embedded in it). Only applies to PNG/JPEG/GIF output.</small>
+        </div>
+    </div>
   </div>
 </div>
 
@@ -140,7 +185,7 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
                 <div class="form-group">
                     <label for="id_owner">Owner *</label>
                     <select name="id_owner" class="form-control">
-                        <option value="" selected>All</option>
+                        <option value="">All (shared with every admin)</option>
                         <?php
 
                         require_once BASE_PATH . '/lib/Users/Users.php';
@@ -148,8 +193,9 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
                         $users = $users_instance->getAllUsers();
 
                         foreach ($users as $user) {
+                            $is_self = (int) $user["id"] === (int) $_SESSION["user_id"];
                             ?>
-                            <option value="<?php echo $user["id"];?>"><?php echo $user["username"];?></option>
+                            <option value="<?php echo $user["id"];?>" <?php echo $is_self ? 'selected' : ''; ?>><?php echo $user["username"];?></option>
                         <?php } ?>
                     </select>
                 </div>

src/forms/static/bitcoin.php

@@ -14,7 +14,7 @@
     
     <div class="col-6 col-md-3">
             <div class="form-group">
-                <label>Amount *</label>
+                <label>Amount</label>
                 <div class="input-group">
                     <input type="number" name="amount" value="" placeholder="" class="form-control" step="0.0001">
                     <div class="input-group-append">

src/forms/static/wifi.php

@@ -10,6 +10,7 @@
             <label>Encryption *</label>
             <select name="encryption" class="form-control">
                 <option value="WPA" Selected>WPA/WPA2</option>
+                <option value="WPA3">WPA3</option>
                 <option value="WEP">WEP</option>
                 <option value="">None</option>
             </select>

src/helpers/helpers.php

@@ -117,6 +117,45 @@ function paginationLinks($current_page, $total_pages, $base_url) {
 	return $html;
 }
 
+/**
+ * Handles the optional "icon above the qr code" upload. Validates the actual image
+ * type (not just the extension/mime the browser claims) and stores the file outside
+ * the document root, next to the generated qr codes.
+ */
+function qr_handle_icon_upload($fileKey = 'icon') {
+    if (!isset($_FILES[$fileKey]) || $_FILES[$fileKey]['error'] === UPLOAD_ERR_NO_FILE) {
+        return ['ok' => true, 'path' => null];
+    }
+
+    if ($_FILES[$fileKey]['error'] !== UPLOAD_ERR_OK) {
+        return ['ok' => false, 'error' => 'Icon upload failed.'];
+    }
+
+    if ($_FILES[$fileKey]['size'] > 1024 * 1024) {
+        return ['ok' => false, 'error' => 'Icon must be smaller than 1MB.'];
+    }
+
+    $info = @getimagesize($_FILES[$fileKey]['tmp_name']);
+    $allowed = [IMAGETYPE_PNG => 'png', IMAGETYPE_JPEG => 'jpg', IMAGETYPE_GIF => 'gif'];
+
+    if ($info === false || !isset($allowed[$info[2]])) {
+        return ['ok' => false, 'error' => 'Icon must be a PNG, JPEG or GIF image.'];
+    }
+
+    $dir = SAVED_QRCODE_DIRECTORY . 'icons/';
+    if (!is_dir($dir)) {
+        mkdir($dir, 0750, true);
+    }
+
+    $destination = $dir . bin2hex(random_bytes(16)) . '.' . $allowed[$info[2]];
+
+    if (!move_uploaded_file($_FILES[$fileKey]['tmp_name'], $destination)) {
+        return ['ok' => false, 'error' => 'Could not store the uploaded icon.'];
+    }
+
+    return ['ok' => true, 'path' => $destination];
+}
+
 function base_url() {
     require_once(__DIR__ . '/../config/environment.php');
     if (defined('BASE_URL') && BASE_URL !== null) {

src/lib/Qrcode/Qrcode-intchil.php

@@ -72,11 +72,29 @@ class Qrcode {
         return $format;
     }
 
+    const FRAME_FONT_DIR = '/usr/share/fonts/truetype/dejavu/';
+
+    const ALLOWED_FRAME_FONTS = [
+        'sans' => 'DejaVuSans.ttf',
+        'sans-bold' => 'DejaVuSans-Bold.ttf',
+        'serif' => 'DejaVuSerif.ttf',
+        'serif-bold' => 'DejaVuSerif-Bold.ttf',
+        'mono' => 'DejaVuSansMono.ttf',
+        'mono-bold' => 'DejaVuSansMono-Bold.ttf',
+    ];
+
+    private static function resolveFrameFont($fontKey) {
+        $file = self::ALLOWED_FRAME_FONTS[$fontKey] ?? self::ALLOWED_FRAME_FONTS['sans'];
+        $path = self::FRAME_FONT_DIR . $file;
+
+        return is_file($path) ? $path : null;
+    }
+
     /**
      * Renders an optional text label below the qr code. Only supported for raster
      * formats (png/jpg/jpeg/gif) via GD; a no-op for svg/svgbw/eps.
      */
-    private function addFrameText($path, $format, $text) {
+    private function addFrameText($path, $format, $text, $fontKey = 'sans', $fontSize = 16) {
         $text = trim((string) $text);
         $loaders = ['png' => 'imagecreatefrompng', 'jpg' => 'imagecreatefromjpeg', 'jpeg' => 'imagecreatefromjpeg', 'gif' => 'imagecreatefromgif'];
         $savers = ['png' => 'imagepng', 'jpg' => 'imagejpeg', 'jpeg' => 'imagejpeg', 'gif' => 'imagegif'];
@@ -85,6 +103,9 @@ class Qrcode {
             return;
         }
 
+        $fontFile = self::resolveFrameFont($fontKey);
+        $fontSize = min(max((int) $fontSize, 8), 60);
+
         $source = @$loaders[$format]($path);
         if ($source === false) {
             return;
@@ -92,7 +113,7 @@ class Qrcode {
 
         $width = imagesx($source);
         $height = imagesy($source);
-        $padding = 30;
+        $padding = $fontFile !== null ? $fontSize + 20 : 30;
 
         $canvas = imagecreatetruecolor($width, $height + $padding);
         $white = imagecolorallocate($canvas, 255, 255, 255);
@@ -100,11 +121,20 @@ class Qrcode {
         imagefill($canvas, 0, 0, $white);
         imagecopy($canvas, $source, 0, 0, 0, 0, $width, $height);
 
+        if ($fontFile !== null && function_exists('imagettftext')) {
+            $bbox = imagettfbbox($fontSize, 0, $fontFile, $text);
+            $text_width = abs($bbox[2] - $bbox[0]);
+            $text_height = abs($bbox[1] - $bbox[7]);
+            $x = max(0, (int) (($width - $text_width) / 2));
+            $y = $height + (int) (($padding + $text_height) / 2);
+            imagettftext($canvas, $fontSize, 0, $x, $y, $black, $fontFile, $text);
+        } else {
             $font = 5;
             $text_width = imagefontwidth($font) * strlen($text);
             $x = max(0, (int) (($width - $text_width) / 2));
             $y = $height + (int) (($padding - imagefontheight($font)) / 2);
             imagestring($canvas, $font, $x, $y, $text, $black);
+        }
 
         $savers[$format]($canvas, $path);
 
@@ -112,6 +142,70 @@ class Qrcode {
         imagedestroy($canvas);
     }
 
+    /**
+     * Renders an optional user-uploaded icon above the qr code (not embedded inside
+     * it, so scanability is unaffected). Only supported for raster formats via GD.
+     */
+    private function addTopIcon($path, $format, $iconPath) {
+        $loaders = ['png' => 'imagecreatefrompng', 'jpg' => 'imagecreatefromjpeg', 'jpeg' => 'imagecreatefromjpeg', 'gif' => 'imagecreatefromgif'];
+        $savers = ['png' => 'imagepng', 'jpg' => 'imagejpeg', 'jpeg' => 'imagejpeg', 'gif' => 'imagegif'];
+
+        if (!$iconPath || !is_file($iconPath) || !isset($loaders[$format]) || !is_file($path)) {
+            return;
+        }
+
+        $iconInfo = @getimagesize($iconPath);
+        $iconLoaders = [IMAGETYPE_PNG => 'imagecreatefrompng', IMAGETYPE_JPEG => 'imagecreatefromjpeg', IMAGETYPE_GIF => 'imagecreatefromgif'];
+
+        if ($iconInfo === false || !isset($iconLoaders[$iconInfo[2]])) {
+            return;
+        }
+
+        $source = @$loaders[$format]($path);
+        $icon = @$iconLoaders[$iconInfo[2]]($iconPath);
+
+        if ($source === false || $icon === false) {
+            return;
+        }
+
+        $width = imagesx($source);
+        $height = imagesy($source);
+
+        $iconWidth = imagesx($icon);
+        $iconHeight = imagesy($icon);
+
+        $maxIconHeight = (int) ($height * 0.25);
+        $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
+        $targetWidth = max(1, (int) ($iconWidth * $scale));
+        $targetHeight = max(1, (int) ($iconHeight * $scale));
+
+        $margin = 15;
+        $topPadding = $targetHeight + ($margin * 2);
+
+        $canvas = imagecreatetruecolor($width, $height + $topPadding);
+        $white = imagecolorallocate($canvas, 255, 255, 255);
+        imagefill($canvas, 0, 0, $white);
+
+        $resizedIcon = imagecreatetruecolor($targetWidth, $targetHeight);
+        imagealphablending($resizedIcon, false);
+        imagesavealpha($resizedIcon, true);
+        $transparent = imagecolorallocatealpha($resizedIcon, 0, 0, 0, 127);
+        imagefill($resizedIcon, 0, 0, $transparent);
+        imagealphablending($icon, true);
+        imagecopyresampled($resizedIcon, $icon, 0, 0, 0, 0, $targetWidth, $targetHeight, $iconWidth, $iconHeight);
+
+        $x = (int) (($width - $targetWidth) / 2);
+        imagecopy($canvas, $resizedIcon, $x, $margin, 0, 0, $targetWidth, $targetHeight);
+        imagecopy($canvas, $source, 0, $topPadding, 0, 0, $width, $height);
+
+        $savers[$format]($canvas, $path);
+
+        imagedestroy($source);
+        imagedestroy($icon);
+        imagedestroy($resizedIcon);
+        imagedestroy($canvas);
+    }
+
     public function getQrcode($id) {
         $db = getDbInstance();
 
@@ -397,7 +491,12 @@ class Qrcode {
                 throw new \RuntimeException($e->getMessage());
             }
 
-            $this->addFrameText($filename, $fileExt, $input_data['frame_text'] ?? '');
+            $this->addTopIcon($filename, $fileExt, $input_data['icon_tmp_path'] ?? null);
+            $this->addFrameText($filename, $fileExt, $input_data['frame_text'] ?? '', $input_data['frame_font'] ?? 'sans', $input_data['frame_font_size'] ?? 16);
+
+            if (!empty($input_data['icon_tmp_path'])) {
+                @unlink($input_data['icon_tmp_path']);
+            }
 
             // If you want you can customi<e qr code with logo
             //$this->addLogo($data_to_db['qrcode'], $options['optionlogo']);

src/lib/Qrcode/Qrcode.php

@@ -57,11 +57,29 @@ class Qrcode {
         return $format;
     }
 
+    const FRAME_FONT_DIR = '/usr/share/fonts/truetype/dejavu/';
+
+    const ALLOWED_FRAME_FONTS = [
+        'sans' => 'DejaVuSans.ttf',
+        'sans-bold' => 'DejaVuSans-Bold.ttf',
+        'serif' => 'DejaVuSerif.ttf',
+        'serif-bold' => 'DejaVuSerif-Bold.ttf',
+        'mono' => 'DejaVuSansMono.ttf',
+        'mono-bold' => 'DejaVuSansMono-Bold.ttf',
+    ];
+
+    private static function resolveFrameFont($fontKey) {
+        $file = self::ALLOWED_FRAME_FONTS[$fontKey] ?? self::ALLOWED_FRAME_FONTS['sans'];
+        $path = self::FRAME_FONT_DIR . $file;
+
+        return is_file($path) ? $path : null;
+    }
+
     /**
      * Renders an optional text label below the qr code. Only supported for raster
      * formats (png/jpg/jpeg/gif) via GD; a no-op for svg/svgbw/eps.
      */
-    private function addFrameText($path, $format, $text) {
+    private function addFrameText($path, $format, $text, $fontKey = 'sans', $fontSize = 16) {
         $text = trim((string) $text);
         $loaders = ['png' => 'imagecreatefrompng', 'jpg' => 'imagecreatefromjpeg', 'jpeg' => 'imagecreatefromjpeg', 'gif' => 'imagecreatefromgif'];
         $savers = ['png' => 'imagepng', 'jpg' => 'imagejpeg', 'jpeg' => 'imagejpeg', 'gif' => 'imagegif'];
@@ -70,6 +88,9 @@ class Qrcode {
             return;
         }
 
+        $fontFile = self::resolveFrameFont($fontKey);
+        $fontSize = min(max((int) $fontSize, 8), 60);
+
         $source = @$loaders[$format]($path);
         if ($source === false) {
             return;
@@ -77,7 +98,7 @@ class Qrcode {
 
         $width = imagesx($source);
         $height = imagesy($source);
-        $padding = 30;
+        $padding = $fontFile !== null ? $fontSize + 20 : 30;
 
         $canvas = imagecreatetruecolor($width, $height + $padding);
         $white = imagecolorallocate($canvas, 255, 255, 255);
@@ -85,11 +106,20 @@ class Qrcode {
         imagefill($canvas, 0, 0, $white);
         imagecopy($canvas, $source, 0, 0, 0, 0, $width, $height);
 
+        if ($fontFile !== null && function_exists('imagettftext')) {
+            $bbox = imagettfbbox($fontSize, 0, $fontFile, $text);
+            $text_width = abs($bbox[2] - $bbox[0]);
+            $text_height = abs($bbox[1] - $bbox[7]);
+            $x = max(0, (int) (($width - $text_width) / 2));
+            $y = $height + (int) (($padding + $text_height) / 2);
+            imagettftext($canvas, $fontSize, 0, $x, $y, $black, $fontFile, $text);
+        } else {
             $font = 5;
             $text_width = imagefontwidth($font) * strlen($text);
             $x = max(0, (int) (($width - $text_width) / 2));
             $y = $height + (int) (($padding - imagefontheight($font)) / 2);
             imagestring($canvas, $font, $x, $y, $text, $black);
+        }
 
         $savers[$format]($canvas, $path);
 
@@ -97,6 +127,70 @@ class Qrcode {
         imagedestroy($canvas);
     }
 
+    /**
+     * Renders an optional user-uploaded icon above the qr code (not embedded inside
+     * it, so scanability is unaffected). Only supported for raster formats via GD.
+     */
+    private function addTopIcon($path, $format, $iconPath) {
+        $loaders = ['png' => 'imagecreatefrompng', 'jpg' => 'imagecreatefromjpeg', 'jpeg' => 'imagecreatefromjpeg', 'gif' => 'imagecreatefromgif'];
+        $savers = ['png' => 'imagepng', 'jpg' => 'imagejpeg', 'jpeg' => 'imagejpeg', 'gif' => 'imagegif'];
+
+        if (!$iconPath || !is_file($iconPath) || !isset($loaders[$format]) || !is_file($path)) {
+            return;
+        }
+
+        $iconInfo = @getimagesize($iconPath);
+        $iconLoaders = [IMAGETYPE_PNG => 'imagecreatefrompng', IMAGETYPE_JPEG => 'imagecreatefromjpeg', IMAGETYPE_GIF => 'imagecreatefromgif'];
+
+        if ($iconInfo === false || !isset($iconLoaders[$iconInfo[2]])) {
+            return;
+        }
+
+        $source = @$loaders[$format]($path);
+        $icon = @$iconLoaders[$iconInfo[2]]($iconPath);
+
+        if ($source === false || $icon === false) {
+            return;
+        }
+
+        $width = imagesx($source);
+        $height = imagesy($source);
+
+        $iconWidth = imagesx($icon);
+        $iconHeight = imagesy($icon);
+
+        $maxIconHeight = (int) ($height * 0.25);
+        $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
+        $targetWidth = max(1, (int) ($iconWidth * $scale));
+        $targetHeight = max(1, (int) ($iconHeight * $scale));
+
+        $margin = 15;
+        $topPadding = $targetHeight + ($margin * 2);
+
+        $canvas = imagecreatetruecolor($width, $height + $topPadding);
+        $white = imagecolorallocate($canvas, 255, 255, 255);
+        imagefill($canvas, 0, 0, $white);
+
+        $resizedIcon = imagecreatetruecolor($targetWidth, $targetHeight);
+        imagealphablending($resizedIcon, false);
+        imagesavealpha($resizedIcon, true);
+        $transparent = imagecolorallocatealpha($resizedIcon, 0, 0, 0, 127);
+        imagefill($resizedIcon, 0, 0, $transparent);
+        imagealphablending($icon, true);
+        imagecopyresampled($resizedIcon, $icon, 0, 0, 0, 0, $targetWidth, $targetHeight, $iconWidth, $iconHeight);
+
+        $x = (int) (($width - $targetWidth) / 2);
+        imagecopy($canvas, $resizedIcon, $x, $margin, 0, 0, $targetWidth, $targetHeight);
+        imagecopy($canvas, $source, 0, $topPadding, 0, 0, $width, $height);
+
+        $savers[$format]($canvas, $path);
+
+        imagedestroy($source);
+        imagedestroy($icon);
+        imagedestroy($resizedIcon);
+        imagedestroy($canvas);
+    }
+
     public function getQrcode($id) {
         $db = getDbInstance();
 
@@ -173,7 +267,12 @@ class Qrcode {
                 $this->failure($e->getMessage());
             }
 
-            $this->addFrameText($filename, $data_to_db['format'], $input_data['frame_text'] ?? '');
+            $this->addTopIcon($filename, $data_to_db['format'], $input_data['icon_tmp_path'] ?? null);
+            $this->addFrameText($filename, $data_to_db['format'], $input_data['frame_text'] ?? '', $input_data['frame_font'] ?? 'sans', $input_data['frame_font_size'] ?? 16);
+
+            if (!empty($input_data['icon_tmp_path'])) {
+                @unlink($input_data['icon_tmp_path']);
+            }
 
             // If you want you can customi<e qr code with logo
             //$this->addLogo($data_to_db['qrcode'], $options['optionlogo']);
@@ -245,7 +344,12 @@ class Qrcode {
             return ['ok' => false, 'error' => 'Could not write the qr code file.'];
         }
 
-        $this->addFrameText($path, $format, $input_data['frame_text'] ?? '');
+        $this->addTopIcon($path, $format, $input_data['icon_tmp_path'] ?? null);
+        $this->addFrameText($path, $format, $input_data['frame_text'] ?? '', $input_data['frame_font'] ?? 'sans', $input_data['frame_font_size'] ?? 16);
+
+        if (!empty($input_data['icon_tmp_path'])) {
+            @unlink($input_data['icon_tmp_path']);
+        }
 
         $db = getDbInstance();
         $last_id = $db->insert($this->table, $data_to_db);

src/lib/StaticQrcode/StaticQrcode.php

@@ -330,22 +330,49 @@ class StaticQrcode {
     /**
      * create a qr code of type "bitcoin"
      * @string address -> required
-     * @int amount -> required
+     * @string amount -> optional (a bitcoin address is useful as a standing QR code,
+     *                    not just for one specific payment amount)
      * @string label
      * @string message
      */
     public function bitcoinQrcode($address, $amount, $label, $message)
     {
-        if($address != NULL && $amount != NULL){
+        $address = trim((string) $address);
-            $this->sData = 'bitcoin:'.$address.'?amount='.$amount.'&label='.$label.'&message='.$message;
+        $amount = trim((string) $amount);
-            $this->sContent = '<strong>BTC address:</strong> '.$address.'<br>'.'<strong>Amount:</strong> '.$amount.'<br>';
+        $label = trim((string) $label);
-            $this->sContent .= '<strong>Label:</strong> '.$label.'<br>'.'<strong>Message:</strong> '.$message;
+        $message = trim((string) $message);
+
+        if ($address === '') {
+            $this->requiredFieldsError();
+            return;
+        }
+
+        $params = [];
+        if ($amount !== '') {
+            $params[] = 'amount=' . rawurlencode($amount);
+        }
+        if ($label !== '') {
+            $params[] = 'label=' . rawurlencode($label);
+        }
+        if ($message !== '') {
+            $params[] = 'message=' . rawurlencode($message);
+        }
+
+        $this->sData = 'bitcoin:' . $address . ($params ? '?' . implode('&', $params) : '');
+
+        $this->sContent = '<strong>BTC address:</strong> ' . $address . '<br>';
+        if ($amount !== '') {
+            $this->sContent .= '<strong>Amount:</strong> ' . $amount . '<br>';
+        }
+        if ($label !== '') {
+            $this->sContent .= '<strong>Label:</strong> ' . $label . '<br>';
+        }
+        if ($message !== '') {
+            $this->sContent .= '<strong>Message:</strong> ' . $message;
+        }
 
         $this->addQrcode("bitcoin");
     }
-        else
-            $this->requiredFieldsError();
-    }
     
     /**
      * create a qr code of type "2FA"
@@ -473,6 +500,9 @@ class StaticQrcode {
         $input_data["foreground"] = $_POST['foreground'];
         $input_data["background"] = $_POST['background'];
         $input_data["frame_text"] = $_POST['frame_text'] ?? '';
+        $input_data["frame_font"] = $_POST['frame_font'] ?? 'sans';
+        $input_data["frame_font_size"] = $_POST['frame_font_size'] ?? 16;
+        $input_data["icon_tmp_path"] = $_POST['icon_tmp_path'] ?? null;
 
         $data_to_qrcode = urlencode($this->sData);
 

src/static_qrcode.php

@@ -34,7 +34,15 @@ if($_SERVER["REQUEST_METHOD"] === "POST" && isset($_POST["edit"])) {
         $static_qrcode_instance->editQrcode($_POST);
 }
 
-if($_SERVER["REQUEST_METHOD"] === "POST" && !isset($_POST["edit"])) {
+if($_SERVER["REQUEST_METHOD"] === "POST" && !isset($_POST["edit"]) && !isset($_POST["del_id"])) {
+    $icon_upload = qr_handle_icon_upload('icon');
+    if (!$icon_upload['ok']) {
+        $_SESSION['failure'] = $icon_upload['error'];
+        header('Location: ' . basename(__FILE__) . '?type=' . urlencode($_GET['type'] ?? ''));
+        exit;
+    }
+    $_POST['icon_tmp_path'] = $icon_upload['path'];
+
     switch($_GET['type']){
         case 'text':         $static_qrcode_instance->textQrcode($_POST['text']);
             break;