From e1b8dc0d92c10e712e67116cbc218af71fa12837 Mon Sep 17 00:00:00 2001
From: Filippo Scognamiglio <flscogna@gmail.com>
Date: Thu, 3 Apr 2014 18:44:23 +0200
Subject: [PATCH] It is now possible to set fps to save some cpu and battery.

---
 app/SettingsWindow.qml | 26 ++++++++++++++++++++++++++
 app/ShaderSettings.qml |  5 +++++
 app/Terminal.qml       |  7 +++++--
 app/main.qml           |  4 ++--
 4 files changed, 38 insertions(+), 4 deletions(-)

diff --git a/app/SettingsWindow.qml b/app/SettingsWindow.qml
index d664f5a..258d201 100644
--- a/app/SettingsWindow.qml
+++ b/app/SettingsWindow.qml
@@ -150,6 +150,32 @@ ApplicationWindow {
                         //                        }
                     }
                 }
+                GroupBox{
+                    title: qsTr("Performace")
+                    Layout.fillWidth: true
+                    Layout.columnSpan: 2
+                    anchors.left: parent.left
+                    anchors.right: parent.right
+                    RowLayout{
+                        Layout.columnSpan: 2
+                        anchors.left: parent.left
+                        anchors.right: parent.right
+                        Text{text: "Animation FPS"}
+                        Slider{
+                            Layout.fillWidth: true
+                            id: slider
+                            stepSize: 1
+                            maximumValue: 60
+                            minimumValue: 0
+                            onValueChanged: shadersettings.fps = value;
+                            value: shadersettings.fps
+                        }
+                        Text{
+                            id: textfield
+                            text: slider.value
+                        }
+                    }
+                }
             }
         }
 
diff --git a/app/ShaderSettings.qml b/app/ShaderSettings.qml
index 37028d8..b00c950 100644
--- a/app/ShaderSettings.qml
+++ b/app/ShaderSettings.qml
@@ -35,6 +35,8 @@ Item{
     property real window_scaling: 1.0
     property real total_scaling: terminal_scaling * window_scaling
 
+    property real fps: 60
+
     function mix(c1, c2, alpha){
         return Qt.rgba(c1.r * alpha + c2.r * (1-alpha),
                        c1.g * alpha + c2.g * (1-alpha),
@@ -162,6 +164,8 @@ Item{
         console.log(profilename + settings);
         settings = JSON.parse(settings);
 
+        fps = settings.fps !== undefined ? settings.fps: fps
+
         contrast = settings.contrast !== undefined ? settings.contrast : contrast;
         brightness = settings.brightness !== undefined ? settings.brightness : brightness
 
@@ -189,6 +193,7 @@ Item{
 
     function storeCurrentSettings(){
         var settings = {
+            fps: fps,
             ambient_light : ambient_light,
             brightness : brightness,
             contrast : contrast,
diff --git a/app/Terminal.qml b/app/Terminal.qml
index 87f2b5d..7279ecc 100644
--- a/app/Terminal.qml
+++ b/app/Terminal.qml
@@ -25,12 +25,15 @@ import org.kde.konsole 0.1
 
 Item{
     id: terminalContainer
-    property real mBloom: shadersettings.bloom_strength
+    //The blur effect has to take into account the framerate
+    property real fpsAttenuation: shadersettings.fps / 60
     property real mBlur: shadersettings.motion_blur
-    property real motionBlurCoefficient: (_minBlurCoefficient)*mBlur + (_maxBlurCoefficient)*(1.0-mBlur)
+    property real motionBlurCoefficient: ((_minBlurCoefficient)*mBlur + (_maxBlurCoefficient)*(1.0-mBlur)) / fpsAttenuation
     property real _minBlurCoefficient: 0.015
     property real _maxBlurCoefficient: 0.10
 
+    property real mBloom: shadersettings.bloom_strength
+
     //Force reload of the blursource when settings change
     onMBloomChanged: restartBlurredSource()
 
diff --git a/app/main.qml b/app/main.qml
index 192af8e..335a164 100644
--- a/app/main.qml
+++ b/app/main.qml
@@ -81,7 +81,7 @@ ApplicationWindow{
         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"
@@ -99,7 +99,7 @@ ApplicationWindow{
             id: timetimer
             property real time: 0
             onTriggered: time += interval
-            interval: 16
+            interval: Math.round(1000 / shadersettings.fps)
             running: true
             repeat: true
         }