From 182b0f9fe085c8cdf66d15b9d93eee373fe49455 Mon Sep 17 00:00:00 2001
From: CodeByMrFinchum <mr.finchum@pm.me>
Date: Thu, 9 Jan 2025 11:31:58 +0100
Subject: [PATCH] Few new checks and options, see changelog.

---
 src/OptimaLab35/gui.py                    |  58 +-
 src/OptimaLab35/ui/exif_handler_window.py |   2 +-
 src/OptimaLab35/ui/main_window.ui         | 614 +++++++++++++++-------
 src/OptimaLab35/ui/preview_window.ui      | 303 +++++++++++
 4 files changed, 782 insertions(+), 195 deletions(-)
 create mode 100644 src/OptimaLab35/ui/preview_window.ui

diff --git a/src/OptimaLab35/gui.py b/src/OptimaLab35/gui.py
index 10421cf..2f03582 100644
--- a/src/OptimaLab35/gui.py
+++ b/src/OptimaLab35/gui.py
@@ -57,10 +57,6 @@ class PreviewWindow(QMainWindow, Ui_Preview_Window):
             self.ui.image_path_lineEdit.setText(file[0])
             self._update_preview()
 
-    def _supdate_preview(self):
-        self._update_preview()
-        pass
-
     def _update_preview(self):
         path = self.ui.image_path_lineEdit.text()
         if not os.path.isfile(path):
@@ -70,15 +66,13 @@ class PreviewWindow(QMainWindow, Ui_Preview_Window):
                 save = False,
                 image_input_file = path,
                 image_output_file = "",
-                quality = 50,
-                optimize = True,
                 grayscale = self.ui.grayscale_checkBox.isChecked(),
                 brightness = int(self.ui.brightness_spinBox.text()),
                 contrast = int(self.ui.contrast_spinBox.text()),
             )
-        except Exception:
+        except Exception as e:
             QMessageBox.warning(self, "Warning", "Error loading image...")
-            print("Error loading image...")
+            print(f"Error loading image...\n{e}")
             return
         # Create a QPixmap object from an image file
 
@@ -99,6 +93,7 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
         self.o = OptimaManager()
+        self.check_version()
         self.u = Utilities()
         self.u.program_configs()
         self.exif_file = os.path.expanduser("~/.config/OptimaLab35/exif.yaml")
@@ -156,13 +151,14 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         self.ui.progressBar.setValue(0)
 
     def _info_window(self):
+        # ChatGPT, mainly
         info_text = f"""
         <h3>{self.name} v{self.version}</h3>
         <p>{self.name} is a GUI for <b>{self.o.name}</b> (v{self.o.version}).</p>
-        <p>For more details, visit:</p>
+        <p> Both projects are in active development, for more details, visit:</p>
         <ul>
             <li><a href="https://gitlab.com/CodeByMrFinchum/OptimaLab35">OptimaLab35 GitLab</a></li>
-            <li><a href="https://gitlab.com/CodeByMrFinchum/optima35">Optima35 GitLab</a></li>
+            <li><a href="https://gitlab.com/CodeByMrFinchum/optima35">optima35 GitLab</a></li>
         </ul>
         """
 
@@ -278,9 +274,27 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         elif index == 0:  # Main Tab
             self._handle_exif_file("write")
 
+    def _sort_dict_of_lists(self, input_dict):
+        # Partily ChatGPT
+        sorted_dict = {}
+        for key, lst in input_dict.items():
+            # Sort alphabetically for strings, numerically for numbers
+            if key == "iso":
+                lst = [int(x) for x in lst]
+                lst = sorted(lst)
+                lst = [str(x) for x in lst]
+                sorted_dict["iso"] = lst
+
+            elif all(isinstance(x, str) for x in lst):
+                sorted_dict[key] = sorted(lst, key=str.lower)  # Case-insensitive sort for strings
+
+        return sorted_dict
+
+
     def _handle_exif_file(self, do):
         if do == "read":
-            self.available_exif_data = self.u.read_yaml(self.exif_file)
+            file_dict = self.u.read_yaml(self.exif_file)
+            self.available_exif_data = self._sort_dict_of_lists(file_dict)
         elif do == "write":
             self.u.write_yaml(self.exif_file, self.available_exif_data)
 
@@ -297,6 +311,7 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
             "artist": self.ui.artist_comboBox,
             "copyright_info": self.ui.copyright_info_comboBox,
         }
+
         self._populate_comboboxes(combo_mapping)
 
     def _populate_comboboxes(self, combo_mapping):
@@ -400,7 +415,9 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         self.settings["contrast"] = int(self.ui.contrast_spinBox.text()) if self.ui.contrast_spinBox.text() != "0" else None
         #self._get_spinbox_value(self.ui.contrast_spinBox) if self.ui.contrast_checkbox.isChecked() else None
 
-        self.settings["new_file_names"] = self._get_text_value(self.ui.filename, False) if self.ui.rename_checkbox.isChecked() else False
+        new_name = self._get_text_value(self.ui.filename, False) if self.ui.rename_checkbox.isChecked() else False
+        if isinstance(new_name, str): new_name = new_name.replace(" ", "_")
+        self.settings["new_file_names"] = new_name
         self.settings["watermark"] = self.ui.watermark_lineEdit.text() if len(self.ui.watermark_lineEdit.text()) != 0 else None
         #self._get_text_value(self.ui.watermark_lineEdit) if self.ui.watermark_checkbox.isChecked() else None
 
@@ -426,12 +443,27 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         user_data["user_comment"] = self.ui.user_comment_comboBox.currentText()
         user_data["artist"] = self.ui.artist_comboBox.currentText()
         user_data["copyright_info"] = self.ui.copyright_info_comboBox.currentText()
-        user_data["software"] = f"{self.o.name} {self.o.version}"
+        user_data["software"] = f"{self.name} {self.version} with {self.o.name} {self.o.version}"
         return user_data
 
     def closeEvent(self, event):
         self.preview_window.close()
 
+    def check_version(self, min_version="0.6.5-a1"):
+        # Mainly ChatGPT
+        from packaging import version  # Use `packaging` for robust version comparison
+
+        current_version = self.o.version
+        if version.parse(current_version) < version.parse(min_version):
+            msg = (
+                f"optima35 version {current_version} detected.\n"
+                f"Minimum required version is {min_version}.\n"
+                "Please update the core package to continue.\n"
+                "https://pypi.org/project/optima35/"
+            )
+            QMessageBox.critical(None, "Version Error", msg)
+            sys.exit(1)
+
 def main():
     app = QtWidgets.QApplication(sys.argv)
     window = OptimaLab35()
diff --git a/src/OptimaLab35/ui/exif_handler_window.py b/src/OptimaLab35/ui/exif_handler_window.py
index 8564cba..930fb51 100644
--- a/src/OptimaLab35/ui/exif_handler_window.py
+++ b/src/OptimaLab35/ui/exif_handler_window.py
@@ -69,7 +69,7 @@ class ExifEditor(QMainWindow):
             self.list_widget.addItem(new_item)
             self.line_edit.clear()
         else:
-            QMessageBox.warning(self, "Warning", "Cannot add an empty item.")
+            QMessageBox.warning(self, "Warning", f"Cannot add an empty item.\nDelete {self.exif_file}...")
 
     def delete_item(self):
         """Delete the selected item from the list."""
diff --git a/src/OptimaLab35/ui/main_window.ui b/src/OptimaLab35/ui/main_window.ui
index b75e88f..f4e3ac7 100644
--- a/src/OptimaLab35/ui/main_window.ui
+++ b/src/OptimaLab35/ui/main_window.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>450</width>
-    <height>708</height>
+    <width>440</width>
+    <height>756</height>
    </rect>
   </property>
   <property name="minimumSize">
@@ -18,7 +18,7 @@
   </property>
   <property name="maximumSize">
    <size>
-    <width>500</width>
+    <width>1000</width>
     <height>1000</height>
    </size>
   </property>
@@ -52,6 +52,23 @@
            </size>
           </property>
           <layout class="QGridLayout" name="gridLayout_5">
+           <item row="0" column="1">
+            <widget class="QPushButton" name="input_folder_button">
+             <property name="text">
+              <string>input</string>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="2">
+            <widget class="QLineEdit" name="output_path">
+             <property name="text">
+              <string/>
+             </property>
+             <property name="placeholderText">
+              <string>Enter output folder</string>
+             </property>
+            </widget>
+           </item>
            <item row="0" column="0">
             <widget class="QLineEdit" name="input_path">
              <property name="text">
@@ -62,24 +79,7 @@
              </property>
             </widget>
            </item>
-           <item row="0" column="1">
-            <widget class="QLineEdit" name="output_path">
-             <property name="text">
-              <string/>
-             </property>
-             <property name="placeholderText">
-              <string>Enter output folder</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="0">
-            <widget class="QPushButton" name="input_folder_button">
-             <property name="text">
-              <string>input</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
+           <item row="0" column="3">
             <widget class="QPushButton" name="output_folder_button">
              <property name="text">
               <string>output</string>
@@ -101,33 +101,83 @@
            <string>Essential group</string>
           </property>
           <layout class="QGridLayout" name="gridLayout_4">
-           <item row="0" column="0">
-            <widget class="QCheckBox" name="resize_checkbox">
+           <item row="4" column="0">
+            <widget class="QLabel" name="quality_label_2">
              <property name="text">
-              <string>Resize</string>
+              <string>Quality</string>
              </property>
             </widget>
            </item>
-           <item row="0" column="1">
-            <widget class="QSpinBox" name="resize_spinBox">
+           <item row="3" column="3">
+            <widget class="QSpinBox" name="jpg_quality_spinBox">
+             <property name="minimum">
+              <number>1</number>
+             </property>
+             <property name="maximum">
+              <number>100</number>
+             </property>
+             <property name="value">
+              <number>90</number>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="0">
+            <widget class="QLabel" name="label_11">
+             <property name="text">
+              <string>Export Format</string>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="3">
+            <widget class="QCheckBox" name="optimize_checkBox">
+             <property name="text">
+              <string>optimize</string>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="2">
+            <widget class="QSlider" name="png_quality_Slider">
+             <property name="minimum">
+              <number>1</number>
+             </property>
+             <property name="maximum">
+              <number>9</number>
+             </property>
+             <property name="pageStep">
+              <number>1</number>
+             </property>
+             <property name="sliderPosition">
+              <number>6</number>
+             </property>
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="3">
+            <widget class="QSpinBox" name="png_quality_spinBox">
              <property name="enabled">
-              <bool>false</bool>
+              <bool>true</bool>
              </property>
              <property name="minimum">
               <number>1</number>
              </property>
              <property name="maximum">
-              <number>200</number>
-             </property>
-             <property name="singleStep">
-              <number>1</number>
+              <number>9</number>
              </property>
              <property name="value">
-              <number>80</number>
+              <number>6</number>
              </property>
             </widget>
            </item>
-           <item row="1" column="0">
+           <item row="3" column="0">
+            <widget class="QLabel" name="quality_label_1">
+             <property name="text">
+              <string>Quality</string>
+             </property>
+            </widget>
+           </item>
+           <item row="0" column="2">
             <widget class="QComboBox" name="image_type">
              <item>
               <property name="text">
@@ -146,21 +196,47 @@
              </item>
             </widget>
            </item>
-           <item row="1" column="1">
-            <widget class="QSpinBox" name="jpg_quality_spinBox">
+           <item row="3" column="2">
+            <widget class="QSlider" name="jpg_quality_Slider">
              <property name="minimum">
               <number>1</number>
              </property>
              <property name="maximum">
               <number>100</number>
              </property>
-             <property name="value">
-              <number>80</number>
+             <property name="sliderPosition">
+              <number>90</number>
+             </property>
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
              </property>
             </widget>
            </item>
-           <item row="1" column="2">
-            <widget class="QSpinBox" name="png_quality_spinBox">
+           <item row="5" column="0">
+            <widget class="QLabel" name="label_13">
+             <property name="text">
+              <string>Resize</string>
+             </property>
+            </widget>
+           </item>
+           <item row="5" column="2">
+            <widget class="QSlider" name="resize_Slider">
+             <property name="minimum">
+              <number>1</number>
+             </property>
+             <property name="maximum">
+              <number>200</number>
+             </property>
+             <property name="value">
+              <number>100</number>
+             </property>
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+            </widget>
+           </item>
+           <item row="5" column="3">
+            <widget class="QSpinBox" name="resize_spinBox">
              <property name="enabled">
               <bool>true</bool>
              </property>
@@ -168,27 +244,17 @@
               <number>1</number>
              </property>
              <property name="maximum">
-              <number>9</number>
+              <number>200</number>
+             </property>
+             <property name="singleStep">
+              <number>1</number>
              </property>
              <property name="value">
-              <number>6</number>
-             </property>
-            </widget>
-           </item>
-           <item row="0" column="2">
-            <widget class="QCheckBox" name="optimize_checkBox">
-             <property name="text">
-              <string>optimize</string>
+              <number>100</number>
              </property>
             </widget>
            </item>
           </layout>
-          <zorder>png_quality_spinBox</zorder>
-          <zorder>resize_checkbox</zorder>
-          <zorder>resize_spinBox</zorder>
-          <zorder>image_type</zorder>
-          <zorder>jpg_quality_spinBox</zorder>
-          <zorder>optimize_checkBox</zorder>
          </widget>
         </item>
         <item>
@@ -199,14 +265,124 @@
             <height>16777215</height>
            </size>
           </property>
+          <property name="mouseTracking">
+           <bool>false</bool>
+          </property>
           <property name="title">
            <string>Extra stuff</string>
           </property>
           <layout class="QGridLayout" name="gridLayout_3">
-           <item row="3" column="0" colspan="3">
+           <item row="1" column="0">
+            <widget class="QLabel" name="label_9">
+             <property name="text">
+              <string>Brightness</string>
+             </property>
+            </widget>
+           </item>
+           <item row="1" column="1">
+            <widget class="QSlider" name="brightness_horizontalSlider">
+             <property name="minimum">
+              <number>-100</number>
+             </property>
+             <property name="maximum">
+              <number>100</number>
+             </property>
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+            </widget>
+           </item>
+           <item row="1" column="2">
+            <widget class="QSpinBox" name="brightness_spinBox">
+             <property name="enabled">
+              <bool>true</bool>
+             </property>
+             <property name="minimum">
+              <number>-100</number>
+             </property>
+             <property name="maximum">
+              <number>100</number>
+             </property>
+             <property name="value">
+              <number>0</number>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="2">
+            <widget class="QSpinBox" name="contrast_spinBox">
+             <property name="enabled">
+              <bool>true</bool>
+             </property>
+             <property name="minimum">
+              <number>-100</number>
+             </property>
+             <property name="maximum">
+              <number>100</number>
+             </property>
+             <property name="value">
+              <number>0</number>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="0">
+            <widget class="QLabel" name="label_10">
+             <property name="text">
+              <string>Contrast</string>
+             </property>
+            </widget>
+           </item>
+           <item row="4" column="1">
+            <widget class="QSlider" name="contrast_horizontalSlider">
+             <property name="minimum">
+              <number>-100</number>
+             </property>
+             <property name="maximum">
+              <number>100</number>
+             </property>
+             <property name="orientation">
+              <enum>Qt::Horizontal</enum>
+             </property>
+            </widget>
+           </item>
+           <item row="5" column="0" colspan="2">
+            <widget class="QCheckBox" name="grayscale_checkBox">
+             <property name="text">
+              <string>Turn image to Black and White</string>
+             </property>
+            </widget>
+           </item>
+           <item row="5" column="2">
+            <widget class="QPushButton" name="preview_Button">
+             <property name="text">
+              <string>Preview</string>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+        </item>
+        <item>
+         <widget class="QGroupBox" name="groupBox_3">
+          <property name="enabled">
+           <bool>true</bool>
+          </property>
+          <property name="title">
+           <string>Watermark</string>
+          </property>
+          <property name="flat">
+           <bool>false</bool>
+          </property>
+          <property name="checkable">
+           <bool>false</bool>
+          </property>
+          <property name="checked">
+           <bool>false</bool>
+          </property>
+          <layout class="QHBoxLayout" name="horizontalLayout_5">
+           <item>
             <widget class="QLineEdit" name="watermark_lineEdit">
              <property name="enabled">
-              <bool>false</bool>
+              <bool>true</bool>
              </property>
              <property name="text">
               <string/>
@@ -216,67 +392,14 @@
              </property>
             </widget>
            </item>
-           <item row="0" column="0">
-            <widget class="QCheckBox" name="brightness_checkbox">
+           <item>
+            <widget class="QLabel" name="label_12">
              <property name="text">
-              <string>Brightness</string>
+              <string>Size</string>
              </property>
             </widget>
            </item>
-           <item row="0" column="2">
-            <widget class="QCheckBox" name="grayscale_checkBox">
-             <property name="text">
-              <string>Grayscale</string>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="1">
-            <widget class="QSpinBox" name="contrast_spinBox">
-             <property name="enabled">
-              <bool>false</bool>
-             </property>
-             <property name="minimum">
-              <number>-100</number>
-             </property>
-             <property name="maximum">
-              <number>100</number>
-             </property>
-             <property name="value">
-              <number>10</number>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="0">
-            <widget class="QCheckBox" name="watermark_checkbox">
-             <property name="text">
-              <string>Watermark</string>
-             </property>
-            </widget>
-           </item>
-           <item row="0" column="1">
-            <widget class="QSpinBox" name="brightness_spinBox">
-             <property name="enabled">
-              <bool>false</bool>
-             </property>
-             <property name="minimum">
-              <number>-100</number>
-             </property>
-             <property name="maximum">
-              <number>100</number>
-             </property>
-             <property name="value">
-              <number>-10</number>
-             </property>
-            </widget>
-           </item>
-           <item row="1" column="0">
-            <widget class="QCheckBox" name="contrast_checkbox">
-             <property name="text">
-              <string>Contrast</string>
-             </property>
-            </widget>
-           </item>
-           <item row="2" column="1">
+           <item>
             <widget class="QComboBox" name="font_size_comboBox">
              <property name="currentText">
               <string>Normal</string>
@@ -671,90 +794,43 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>450</width>
+     <width>440</width>
      <height>27</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuInfo">
     <property name="title">
-     <string>Info</string>
+     <string>Settings</string>
     </property>
-    <addaction name="actionInfo"/>
+    <addaction name="actionPreview"/>
+   </widget>
+   <widget class="QMenu" name="menuHelp">
+    <property name="title">
+     <string>Help</string>
+    </property>
+    <addaction name="actionAbout"/>
    </widget>
    <addaction name="menuInfo"/>
+   <addaction name="menuHelp"/>
   </widget>
   <action name="actionInfo">
    <property name="text">
-    <string>Info</string>
+    <string>About</string>
+   </property>
+  </action>
+  <action name="actionPreview">
+   <property name="text">
+    <string>Preview image</string>
+   </property>
+  </action>
+  <action name="actionAbout">
+   <property name="text">
+    <string>About</string>
    </property>
   </action>
  </widget>
  <resources/>
  <connections>
-  <connection>
-   <sender>resize_checkbox</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>resize_spinBox</receiver>
-   <slot>setEnabled(bool)</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>75</x>
-     <y>96</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>196</x>
-     <y>118</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>brightness_checkbox</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>brightness_spinBox</receiver>
-   <slot>setEnabled(bool)</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>83</x>
-     <y>363</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>83</x>
-     <y>399</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>contrast_checkbox</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>contrast_spinBox</receiver>
-   <slot>setEnabled(bool)</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>185</x>
-     <y>363</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>185</x>
-     <y>399</y>
-    </hint>
-   </hints>
-  </connection>
-  <connection>
-   <sender>watermark_checkbox</sender>
-   <signal>toggled(bool)</signal>
-   <receiver>watermark_lineEdit</receiver>
-   <slot>setEnabled(bool)</slot>
-   <hints>
-    <hint type="sourcelabel">
-     <x>83</x>
-     <y>435</y>
-    </hint>
-    <hint type="destinationlabel">
-     <x>237</x>
-     <y>435</y>
-    </hint>
-   </hints>
-  </connection>
   <connection>
    <sender>rename_checkbox</sender>
    <signal>toggled(bool)</signal>
@@ -915,5 +991,181 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>brightness_horizontalSlider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>brightness_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>187</x>
+     <y>393</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>378</x>
+     <y>393</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>brightness_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>brightness_horizontalSlider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>378</x>
+     <y>393</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>187</x>
+     <y>393</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>contrast_horizontalSlider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>contrast_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>187</x>
+     <y>458</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>378</x>
+     <y>458</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>contrast_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>contrast_horizontalSlider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>378</x>
+     <y>458</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>187</x>
+     <y>458</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>resize_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>resize_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>218</x>
+     <y>252</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>380</x>
+     <y>252</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>jpg_quality_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>jpg_quality_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>218</x>
+     <y>289</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>380</x>
+     <y>289</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>jpg_quality_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>jpg_quality_Slider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>380</x>
+     <y>289</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>218</x>
+     <y>289</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>resize_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>resize_Slider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>380</x>
+     <y>252</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>218</x>
+     <y>252</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>resize_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>resize_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>218</x>
+     <y>252</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>380</x>
+     <y>252</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>png_quality_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>png_quality_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>218</x>
+     <y>326</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>380</x>
+     <y>326</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>png_quality_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>png_quality_Slider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>380</x>
+     <y>326</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>218</x>
+     <y>326</y>
+    </hint>
+   </hints>
+  </connection>
  </connections>
 </ui>
diff --git a/src/OptimaLab35/ui/preview_window.ui b/src/OptimaLab35/ui/preview_window.ui
new file mode 100644
index 0000000..29a8057
--- /dev/null
+++ b/src/OptimaLab35/ui/preview_window.ui
@@ -0,0 +1,303 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Preview_Window</class>
+ <widget class="QMainWindow" name="Preview_Window">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>803</width>
+    <height>700</height>
+   </rect>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>800</width>
+    <height>700</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>OptimaLab35 - Preview</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QHBoxLayout" name="horizontalLayout">
+    <item>
+     <widget class="QLabel" name="QLabel">
+      <property name="minimumSize">
+       <size>
+        <width>628</width>
+        <height>628</height>
+       </size>
+      </property>
+      <property name="frameShape">
+       <enum>QFrame::Box</enum>
+      </property>
+      <property name="text">
+       <string/>
+      </property>
+      <property name="scaledContents">
+       <bool>true</bool>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QWidget" name="widget" native="true">
+      <property name="minimumSize">
+       <size>
+        <width>140</width>
+        <height>628</height>
+       </size>
+      </property>
+      <property name="maximumSize">
+       <size>
+        <width>140</width>
+        <height>16777215</height>
+       </size>
+      </property>
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="QLineEdit" name="image_path_lineEdit">
+         <property name="placeholderText">
+          <string>Path to image</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="load_Button">
+         <property name="text">
+          <string>Select image</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QWidget" name="widget_2" native="true">
+         <property name="maximumSize">
+          <size>
+           <width>16777215</width>
+           <height>120</height>
+          </size>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout">
+          <item>
+           <widget class="QLabel" name="label">
+            <property name="text">
+             <string>Brightness</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSpinBox" name="brightness_spinBox">
+            <property name="minimum">
+             <number>-100</number>
+            </property>
+            <property name="maximum">
+             <number>100</number>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSlider" name="brightness_Slider">
+            <property name="minimum">
+             <number>-100</number>
+            </property>
+            <property name="maximum">
+             <number>100</number>
+            </property>
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="reset_brightness_Button">
+            <property name="text">
+             <string>Reset</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QWidget" name="widget_3" native="true">
+         <property name="maximumSize">
+          <size>
+           <width>16777215</width>
+           <height>120</height>
+          </size>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_2">
+          <item>
+           <widget class="QLabel" name="label_2">
+            <property name="text">
+             <string>Contrast</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSpinBox" name="contrast_spinBox">
+            <property name="minimum">
+             <number>-100</number>
+            </property>
+            <property name="maximum">
+             <number>100</number>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QSlider" name="contrast_Slider">
+            <property name="minimum">
+             <number>-100</number>
+            </property>
+            <property name="maximum">
+             <number>100</number>
+            </property>
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="reset_contrast_Button">
+            <property name="text">
+             <string>Reset</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
+       <item>
+        <widget class="QCheckBox" name="grayscale_checkBox">
+         <property name="text">
+          <string>Grayscale</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="update_Button">
+         <property name="text">
+          <string>Update preview</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QWidget" name="widget_4" native="true">
+         <layout class="QVBoxLayout" name="verticalLayout_4">
+          <item>
+           <widget class="QLabel" name="label_3">
+            <property name="text">
+             <string>Copy values to main window when closing</string>
+            </property>
+            <property name="scaledContents">
+             <bool>false</bool>
+            </property>
+            <property name="wordWrap">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QCheckBox" name="checkBox">
+            <property name="text">
+             <string>Copy Values</string>
+            </property>
+            <property name="checked">
+             <bool>true</bool>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="close_Button">
+            <property name="text">
+             <string>Close</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>803</width>
+     <height>27</height>
+    </rect>
+   </property>
+  </widget>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>brightness_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>brightness_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>720</x>
+     <y>311</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>706</x>
+     <y>282</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>brightness_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>brightness_Slider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>706</x>
+     <y>282</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>720</x>
+     <y>311</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>contrast_Slider</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>contrast_spinBox</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>720</x>
+     <y>454</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>699</x>
+     <y>425</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>contrast_spinBox</sender>
+   <signal>valueChanged(int)</signal>
+   <receiver>contrast_Slider</receiver>
+   <slot>setValue(int)</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>699</x>
+     <y>425</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>720</x>
+     <y>454</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>