Introducing terminal scaling for performance reasons on old PCs.

app/ShaderSettings.qml

@@ -25,9 +25,16 @@ Item{
 
     property real ambient_light: 0.2
     property real contrast: 0.8
-
     property real brightness: 0.5
 
+    //Scaling of the preprocessed terminal with respect to the window.
+    property real terminal_scaling: 1.0
+
+    //Scaling of the whole window
+    property real window_scaling: 1.0
+
+    property real total_scaling: terminal_scaling * window_scaling
+
     function mix(c1, c2, alpha){
         return Qt.rgba(c1.r * alpha + c2.r * (1-alpha),
                        c1.g * alpha + c2.g * (1-alpha),

app/Terminal.qml

@@ -31,7 +31,6 @@ Item{
     property real motionBlurCoefficient: (_minBlurCoefficient)*mBlur + (_maxBlurCoefficient)*(1.0-mBlur)
     property real _minBlurCoefficient: 0.015
     property real _maxBlurCoefficient: 0.10
-    anchors.fill: parent
 
     //Force reload of the blursource when settings change
     onScanlinesChanged: restartBlurredSource()
@@ -74,7 +73,8 @@ Item{
             onUpdatedImage: {blurredSource.live = true;livetimer.restart();}
 
             Component.onCompleted: {
-                font.pointSize = shadersettings.font.pixelSize * shadersettings.font_scaling;
+                var scaling_factor = shadersettings.font_scaling * shadersettings.terminal_scaling * shadersettings.window_scaling;
+                font.pointSize = shadersettings.font.pixelSize * scaling_factor;
                 font.family = shadersettings.font.name;
                 setLineSpacing(shadersettings.font.lineSpacing);
                 forceActiveFocus();

app/app.qmlproject.user

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 3.0.1, 2014-04-02T19:08:53. -->
+<!-- Written by QtCreator 3.0.1, 2014-04-02T21:14:48. -->
 <qtcreator>
  <data>
   <variable>ProjectExplorer.Project.ActiveTarget</variable>

app/frames/BlackRoughFrame.qml

@@ -14,7 +14,10 @@ TerminalFrame{
     borderBottom: 232
     imageSource: "../images/black-frame.png"
     normalsSource: "../images/black-frame-normals.png"
-    sourceRect: Qt.rect(-80, -90, terminal.width + 160, terminal.height + 180)
+    sourceRect: Qt.rect(-80 * shadersettings.total_scaling,
+                        -90 * shadersettings.total_scaling,
+                        terminal.width + 160 * shadersettings.total_scaling,
+                        terminal.height + 180 * shadersettings.total_scaling)
 
     shaderString: "FrameShader.qml"
 }

app/frames/NoFrame.qml

@@ -12,7 +12,10 @@ TerminalFrame{
     borderTop: 116
     borderBottom: 116
     imageSource: "../images/screen-frame.png"
-    sourceRect: Qt.rect(-65, -75, terminal.width + 130, terminal.height + 150)
+    sourceRect: Qt.rect(-65 * shadersettings.total_scaling,
+                        -75 * shadersettings.total_scaling,
+                        terminal.width + 130 * shadersettings.total_scaling,
+                        terminal.height + 150 * shadersettings.total_scaling)
 
     shaderString: "NoFrameShader.qml"
 }

app/frames/WhiteSimpleFrame.qml

@@ -13,7 +13,10 @@ TerminalFrame{
     borderBottom: 116
     imageSource: "../images/screen-frame.png"
     normalsSource: "../images/screen-frame-normals.png"
-    sourceRect: Qt.rect(-65, -75, terminal.width + 130, terminal.height + 150)
+    sourceRect: Qt.rect(-65 * shadersettings.total_scaling,
+                        -75 * shadersettings.total_scaling,
+                        terminal.width + 130 * shadersettings.total_scaling,
+                        terminal.height + 150 * shadersettings.total_scaling)
 
     shaderString: "FrameShader.qml"
 }

app/main.qml

@@ -67,10 +67,21 @@ ApplicationWindow{
         }
     }
 
+    Loader{
+        id: frame
+        property rect sourceRect: item.sourceRect
+        anchors.fill: parent
+        z: 2.1
+        source: shadersettings.frame_source
+    }
+
     Item{
         id: maincontainer
-        anchors.fill: parent
+        anchors.centerIn: parent
-        clip: true
+        width: parent.width * shadersettings.window_scaling
+        height: parent.height * shadersettings.window_scaling
+        scale: 1.0 / shadersettings.window_scaling
+        clip: false
         Image{
             id: randtexture
             source: "frames/images/randfunction.png"
@@ -94,22 +105,14 @@ ApplicationWindow{
         }
         Terminal{
             id: terminal
-            width: parent.width
+            width: parent.width * shadersettings.terminal_scaling
-            height: parent.height
+            height: parent.height * shadersettings.terminal_scaling
         }
         ShaderEffectSource{
             id: theSource
             sourceItem: terminal
             sourceRect: frame.sourceRect
         }
-        Loader{
-            id: frame
-            property rect sourceRect: item.sourceRect
-
-            anchors.fill: parent
-            z: 2.1
-            source: shadersettings.frame_source
-        }
         ShaderManager{
             id: shadercontainer
             anchors.fill: parent