feat: 图片上传水印处理

app/admin/controller/v1/SiteConfig.php

@@ -141,6 +141,44 @@ class SiteConfig
         return $ret;
     }
 
+    // 根据分组获取配置
+    public function getByGroupUniqueLabel($unique_label)
+    {
+        $configs = SysConfigModel::alias('c')
+            ->field([
+                'c.id',
+                'c.title',
+                'c.name',
+                'c.value',
+            ])
+            ->join(SysConfigGroupModel::getTable(). ' g', 'g.id = c.group_id')
+            ->where('g.language_id', '=', request()->lang_id)
+            ->where('g.unique_label', '=', $unique_label)
+            ->where('g.status', '=', 1)
+            ->order(['c.sort' => 'asc', 'c.id' => 'desc'])
+            ->select()
+            ->each(function ($item) {
+                // 修改字段为null的输出为空字符串
+                $keys = array_keys($item->toArray());
+                foreach ($keys as $key) {
+                    if (is_null($item[$key])) {
+                        $item[$key] = '';
+                    }
+                }
+                return $item;
+            })
+            ->toArray();
+        if (!empty($configs)) {
+            $configs_map = [];
+            foreach ($configs as $cfg) {
+                $configs_map[$cfg['name']] = $cfg;
+            }
+            return $configs_map;
+        }
+
+        return [];
+    }
+
     // 更新配置
     public function update()
     {

app/admin/controller/v1/Upload.php

@@ -7,6 +7,7 @@ use app\admin\model\v1\SysImageUploadRecordModel;
 use app\admin\model\v1\SysVideoUploadRecordModel;
 use app\admin\model\v1\SysAttachmentUploadRecordModel;
 use Intervention\Image\ImageManager;
+use Intervention\Image\Typography\FontFactory;
 use think\facade\Filesystem;
 
 /**
@@ -44,9 +45,68 @@ class Upload
             $image_model = SysImageUploadRecordModel::md5($filemd5)->find();
             if (is_null($image_model)) {
                 $filename = Filesystem::disk('image')->putFile($param['module'], $file);
-                // 生成缩略图
+                // 处理图片
-                $image_manager = new ImageManager(new \Intervention\Image\Drivers\Imagick\Driver());
+                $image_manager = ImageManager::imagick();
                 $image = $image_manager->read('.' . $storage . '/' . $filename);
+
+                // 水印
+                list($enabled, $type, $text_options, $image_options) = $this->getWatermarkOptions();
+                if ($enabled) {
+                    // 图片水印
+                    if ($type == 'IMAGE' && $image_options['image'] != '') {
+                        // 读取水印图片
+                        $watermark_image = $image_manager->read($image_options['image']);
+                        // 缩放水印图片
+                        $watermark_image->scale($image_options['width'], $image_options['height']);
+                        // 绘制水印图片
+                        $image->place(
+                            $watermark_image, 
+                            $image_options['position'], 
+                            $image_options['offset_x'], 
+                            $image_options['offset_y'], 
+                            $image_options['opacity']
+                        );
+                    }
+                    // 文字水印
+                    else if ($type == 'TEXT' && $text_options['txt'] != '') {
+                        // 原图宽度
+                        $origin_width  = $image->width();
+                        // 原图高度
+                        $origin_height = $image->height();
+
+                        $font_factory = new FontFactory(function(FontFactory $font) use($text_options) {
+                            // 设置字体
+                            $font->filename($text_options['font']);
+                            // 设置字体大小
+                            $font->size($text_options['size']);
+                            // 设置字体颜色及透明度
+                            $opacity = dechex((int)ceil(255 * ($text_options['opacity'] / 100)));
+                            $font->color($text_options['color'] . $opacity);
+                        });
+                        // 文字尺寸
+                        $font_rect = $image->driver()->fontProcessor()->boxSize($text_options['txt'], $font_factory());
+                        // 计算偏移量
+                        list($offset_x, $offset_y) = $this->scaleTxtOffsetXYByPosition(
+                            $text_options['position'],
+                            $text_options['offset_x'],
+                            $text_options['offset_y'],
+                            $origin_width,
+                            $origin_height,
+                            $font_rect->width(),
+                            $font_rect->height()
+                        );
+                        // 绘制文字
+                        $image->text(
+                            $text_options['txt'], 
+                            $offset_x, 
+                            $offset_y, 
+                            $font_factory()
+                        );
+                    }
+                    $image->save('.'. $storage. '/'. $filename);
+                }
+
+                // 缩略图
                 $image->scale(200, 200);
                 $idx = strrpos($filename, '.');
                 $thumb_filename = mb_substr($filename, 0, $idx) . '_thumb.' . mb_substr($filename, $idx + 1);
@@ -79,6 +139,85 @@ class Upload
 
         return error('上传失败');
     }
+    /**
+     * 获取水印配置
+     *
+     * @return array
+     */
+    private function getWatermarkOptions(): array
+    {
+        $config_model     = new \app\admin\controller\v1\SiteConfig;
+        $watermark_config = $config_model->getByGroupUniqueLabel('watermark');
+        return [
+            'enalbed'      => data_get($watermark_config, 'watermark_enabled.value', 0) == 1,
+            'type'         => data_get($watermark_config, 'watermark_type.value', ''),
+            'text_options' => [
+                'txt'      => data_get($watermark_config, 'watermark_text_value.value', ''),
+                'font'     => data_get($watermark_config, 'watermark_font_family.value', ''),
+                'size'     => (float)data_get($watermark_config, 'watermark_text_size.value', 12),
+                'color'    => data_get($watermark_config, 'watermark_text_color.value', '#000000'),
+                'position' => data_get($watermark_config, 'watermark_position.value', 'top-left'),
+                'offset_x' => (int)data_get($watermark_config, 'watermark_offset_x.value', 0),
+                'offset_y' => (int)data_get($watermark_config, 'watermark_offset_y.value', 0),
+                'opacity'  => (int)data_get($watermark_config, 'watermark_opacity.value', 100),
+            ],
+            'image_options' => [
+                'image'    => data_get($watermark_config, 'watermark_image_value.value', ''),
+                'width'    => data_get($watermark_config, 'watermark_image_width.value', null),
+                'height'   => data_get($watermark_config, 'watermark_image_height.value', null),
+                'position' => data_get($watermark_config, 'watermark_position.value', 'top-left'),
+                'offset_x' => (int)data_get($watermark_config, 'watermark_offset_x.value', 0),
+                'offset_y' => (int)data_get($watermark_config, 'watermark_offset_y.value', 0),
+                'opacity'  => (int)data_get($watermark_config, 'watermark_opacity.value', 100),
+            ],
+        ];
+    }
+    /**
+     * 计算文体水印偏移量
+     *
+     * @param string $position
+     * @param integer $offset_x
+     * @param integer $offset_y
+     * @param integer $image_width
+     * @param integer $image_height
+     * @param integer $txt_width
+     * @param integer $txt_height
+     * @return array
+     */
+    private function scaleTxtOffsetXYByPosition(string $position, int $offset_x, int $offset_y, int $image_width, int $image_height, int $txt_width, int $txt_height)
+    {
+        switch ($position) {
+            case 'top-left':
+                // top-left:左上角
+                return [$offset_x, $offset_y];
+            case 'top-right':
+                // top-right:右上角
+                return [(int)($image_width-$txt_width-$offset_x), $offset_y];
+            case 'top':
+                // top:上 - 水平居中
+                return [(int)(($image_width-$txt_width+$offset_x)/2), $offset_y];
+            case 'left':
+                // left:左 - 垂直居中
+                return [$offset_x, (int)(($image_height-$txt_height)/2+$offset_y)];
+            case 'center':
+                // center:水平垂直居中
+                return [(int)(($image_width-$txt_width)/2+$offset_x), (int)(($image_height-$txt_height)/2+$offset_y)];
+            case 'right':
+                // right:右 - 垂直居中
+                return [(int)($image_width-$txt_width-$offset_x), (int)(($image_height-$txt_height)/2+$offset_y)];
+            case'bottom':
+                // bottom:下 - 水平居中
+                return [(int)(($image_width-$txt_width+$offset_x)/2), (int)($image_height-$txt_height-$offset_y)];
+            case'bottom-left':
+                // bottom-left:左下角
+                return [$offset_x, (int)($image_height-$txt_height-$offset_y)];
+            case'bottom-right':
+                // bottom-right:右下角
+                return [(int)($image_width-$txt_width-$offset_x), (int)($image_height-$txt_height-$offset_y)];
+            default:
+                throw new \InvalidArgumentException('Invalid position');
+        }
+    }
 
     /**
      * 上传视频