Settings are now stored, and reloaded at each execution

cool-old-term.pro

@@ -47,5 +47,5 @@ OTHER_FILES += \
     qml/cool-old-term/frames/images/black-frame.png \
     qml/cool-old-term/frames/images/black-frame-normals.png \
     qml/cool-old-term/frames/NoFrame.qml \
-    qml/cool-old-term/MainContainer.qml \
-    qml/cool-old-term/TerminalWindow.qml
+    qml/cool-old-term/TerminalWindow.qml \
+    qml/cool-old-term/Storage.qml

qml/cool-old-term/ShaderSettings.qml

@@ -3,8 +3,8 @@ import QtQuick 2.1
 Item{
     property real ambient_light: 0.2
 
-    property color background_color: "#002200"
-    property color font_color: "#00ff00"
+    property string background_color: "#002200"
+    property string font_color: "#00ff00"
 
     property real screen_flickering: 0.1
     property real noise_strength: 0.1
@@ -23,6 +23,7 @@ Item{
     property var fonts_list: fontlist
 
     onFont_indexChanged: {
+        //Reload the window to avoid ugly glitches
         terminalwindowloader.source = "";
         terminalwindowloader.source = "TerminalWindow.qml";
     }
@@ -63,4 +64,52 @@ Item{
             pixelSize: 25
         }
     }
+
+    Storage{id: storage}
+
+    function retrieveFromDB(){
+        var settings = storage.getSetting("CURRENT_SETTINGS");
+        if(!settings) return;
+
+        settings = JSON.parse(settings);
+
+
+        ambient_light = settings.ambient_light ? settings.ambient_light : ambient_light;
+        background_color = settings.background_color ? settings.background_color : background_color;
+        font_color = settings.font_color ? settings.font_color : font_color;
+
+        screen_flickering = settings.screen_flickering ? settings.screen_flickering : screen_flickering;
+        noise_strength = settings.noise_strength ? settings.noise_strength : noise_strength;
+        screen_distortion = settings.screen_distortion ? settings.screen_distortion : screen_distortion;
+        glowing_line_strength = settings.glowing_line_strength ? settings.glowing_line_strength : glowing_line_strength;
+        scanlines = settings.scanlines ? settings.scanlines : scanlines;
+
+        frames_index = settings.frames_index ? settings.frames_index : frames_index;
+        font_index = settings.font_index ? settings.font_index : font_index;
+    }
+
+    function storeToDb(){
+        var settings = {
+            ambient_light : ambient_light,
+            background_color: background_color,
+            font_color: font_color,
+            screen_flickering: screen_flickering,
+            noise_strength: noise_strength,
+            screen_distortion: screen_distortion,
+            glowing_line_strength: glowing_line_strength,
+            scanlines: scanlines,
+            frames_index: frames_index,
+            font_index: font_index
+        }
+
+        storage.setSetting("CURRENT_SETTINGS", JSON.stringify(settings));
+    }
+
+    Component.onCompleted: {
+        retrieveFromDB();
+    }
+    Component.onDestruction: {
+        storeToDb();
+        //storage.dropSettings();
+    }
 }

qml/cool-old-term/Storage.qml

@@ -0,0 +1,70 @@
+import QtQuick 2.1
+import QtQuick.LocalStorage 2.0
+
+Item {
+    property bool initialized: false
+
+    function getDatabase() {
+         return LocalStorage.openDatabaseSync("coololdterm", "1.0", "StorageDatabase", 100000);
+    }
+
+    // At the start of the application, we can initialize the tables we need if they haven't been created yet
+    function initialize() {
+        var db = getDatabase();
+        db.transaction(
+            function(tx) {
+                // Create the settings table if it doesn't already exist
+                // If the table exists, this is skipped
+                tx.executeSql('CREATE TABLE IF NOT EXISTS settings(setting TEXT UNIQUE, value TEXT)');
+          });
+
+        initialized = true;
+    }
+
+    // This function is used to write a setting into the database
+    function setSetting(setting, value) {
+       if(!initialized) initialize();
+
+       // setting: string representing the setting name (eg: “username”)
+       // value: string representing the value of the setting (eg: “myUsername”)
+       var db = getDatabase();
+       var res = "";
+       db.transaction(function(tx) {
+            var rs = tx.executeSql('INSERT OR REPLACE INTO settings VALUES (?,?);', [setting,value]);
+                  //console.log(rs.rowsAffected)
+                  if (rs.rowsAffected > 0) {
+                    res = "OK";
+                  } else {
+                    res = "Error";
+                  }
+            }
+      );
+      // The function returns “OK” if it was successful, or “Error” if it wasn't
+      return res;
+    }
+    // This function is used to retrieve a setting from the database
+    function getSetting(setting) {
+       if(!initialized) initialize();
+       var db = getDatabase();
+       var res="";
+       db.transaction(function(tx) {
+         var rs = tx.executeSql('SELECT value FROM settings WHERE setting=?;', [setting]);
+         if (rs.rows.length > 0) {
+              res = rs.rows.item(0).value;
+         } else {
+             res = undefined;
+         }
+      })
+      // The function returns “Unknown” if the setting was not found in the database
+      // For more advanced projects, this should probably be handled through error codes
+      return res
+    }
+
+    function dropSettings(){
+        var db = getDatabase();
+        db.transaction(
+            function(tx) {
+                tx.executeSql('DROP TABLE settings');
+          });
+    }
+}

qml/cool-old-term/TerminalWindow.qml

@@ -27,8 +27,6 @@ ApplicationWindow{
                 }
             }
         }
-
-
     }
 
     visible: true