Burnin is now subtractive. Better looking and more predictable.

Fix bad behaving color dialog on some platforms.

app/main.cpp

@@ -24,7 +24,16 @@ QString getNamedArgument(QStringList args, QString name)
 
 int main(int argc, char *argv[])
 {
+    // Some environmental variable are necessary on certain platforms.
+
+    // This disables QT appmenu under Ubuntu, which is not working with QML apps.
     setenv("QT_QPA_PLATFORMTHEME", "", 1);
+
+#if defined(Q_OS_MAC)
+    // This allows UTF-8 characters usage in OSX.
+    setenv("LC_CTYPE", "UTF-8", 1);
+#endif
+
     QApplication app(argc, argv);
     QQmlApplicationEngine engine;
     FileIO fileIO;
@@ -60,6 +69,7 @@ int main(int argc, char *argv[])
     QStringList importPathList = engine.importPathList();
     importPathList.prepend(QCoreApplication::applicationDirPath() + "/qmltermwidget");
     importPathList.prepend(QCoreApplication::applicationDirPath() + "/../PlugIns");
+    importPathList.prepend(QCoreApplication::applicationDirPath() + "/../../../qmltermwidget");
     engine.setImportPathList(importPathList);
 
     engine.load(QUrl("qrc:/main.qml"));

app/qml/ColorButton.qml

@@ -22,8 +22,10 @@ import QtQuick 2.2
 import QtQuick.Dialogs 1.1
 
 Item {
+    id: rootItem
+
     signal colorSelected (color color)
-    property color button_color
+    property color color
     property string name
 
     ColorDialog {
@@ -33,13 +35,13 @@ Item {
         visible: false
 
         //This is a workaround to a Qt 5.2 bug.
-        onCurrentColorChanged: colorDialog.color = colorDialog.currentColor;
+        onColorChanged: if (Qt.platform.os !== "osx") colorSelected(color)
-        onAccepted: colorSelected(color)
+        onAccepted: if (Qt.platform.os === "osx") colorSelected(color)
     }
     Rectangle{
         anchors.fill: parent
         radius: 10
-        color: button_color
+        color: rootItem.color
         border.color: "black"
         Glossy {}
         Rectangle {
@@ -52,7 +54,7 @@ Item {
         Text{
             anchors.centerIn: parent
             z: parent.z + 1
-            text: name + ":  " + button_color
+            text: name + ":  " + rootItem.color
         }
     }
     MouseArea{

app/qml/PreprocessedTerminal.qml

@@ -23,6 +23,8 @@ import QtQuick.Controls 1.1
 
 import QMLTermWidget 1.0
 
+import "utils.js" as Utils
+
 Item{
     id: terminalContainer
 
@@ -43,10 +45,10 @@ Item{
     anchors.bottomMargin: frame.displacementBottom * appSettings.windowScaling
 
     //The blur effect has to take into account the framerate
-    property real mBlur: appSettings.burnIn
+    property real mBlur: Math.sqrt(appSettings.burnIn)
-    property real motionBlurCoefficient: (_maxBlurCoefficient * Math.sqrt(mBlur) + _minBlurCoefficient * (1 - Math.sqrt(mBlur)))
+    property real motionBlurCoefficient: Utils.lint(_minBlurCoefficient, _maxBlurCoefficient, mBlur)
-    property real _minBlurCoefficient: 0.50
+    property real _minBlurCoefficient: 0.2
-    property real _maxBlurCoefficient: 0.90
+    property real _maxBlurCoefficient: 0.02
 
     property size terminalSize: kterminal.terminalSize
     property size fontMetrics: kterminal.fontMetrics
@@ -174,6 +176,7 @@ Item{
     MouseArea{
         acceptedButtons: Qt.LeftButton | Qt.MiddleButton | Qt.RightButton
         anchors.fill: parent
+        cursorShape: Qt.IBeamCursor
         onWheel:{
             if(wheel.modifiers & Qt.ControlModifier){
                wheel.angleDelta.y > 0 ? zoomIn.trigger() : zoomOut.trigger();
@@ -243,6 +246,12 @@ Item{
 
             Timer{
                 id: livetimer
+
+                // The interval assumes 60 fps. This is the time needed burnout a white pixel.
+                // We multiply 1.1 to have a little bit of margin over the theoretical value.
+                // This solution is not extremely clean, but it's probably the best to avoid measuring fps.
+
+                interval: (1 / motionBlurCoefficient) * 60 * 1.1
                 running: true
                 onTriggered: _blurredSourceEffect.live = false;
             }
@@ -286,7 +295,7 @@ Item{
         sourceComponent: ShaderEffect {
             property variant txt_source: kterminalSource
             property variant blurredSource: blurredSourceLoader.item
-            property real blurCoefficient: (1.0 - motionBlurCoefficient)
+            property real blurCoefficient: motionBlurCoefficient
 
             blending: false
 
@@ -306,10 +315,10 @@ Item{
                 "void main() {" +
                     "vec2 coords = qt_TexCoord0;" +
                     "vec3 origColor = texture2D(txt_source, coords).rgb;" +
-                    "vec3 blur_color = texture2D(blurredSource, coords).rgb * (1.0 - blurCoefficient);" +
+                    "vec3 blur_color = texture2D(blurredSource, coords).rgb - vec3(blurCoefficient);" +
                     "vec3 color = min(origColor + blur_color, max(origColor, blur_color));" +
 
-                    "gl_FragColor = vec4(color, step(0.02, rgb2grey(color - origColor)));" +
+                    "gl_FragColor = vec4(color, rgb2grey(color - origColor));" +
                 "}"
 
             onStatusChanged: if (log) console.log(log) //Print warning messages

app/qml/SettingsPerformanceTab.qml

@@ -55,10 +55,10 @@ Tab{
                     Layout.fillWidth: true
                     id: txtslider
                     onValueChanged: if (enabled) appSettings.windowScaling = value;
-                    stepSize: 0.10
+                    stepSize: 0.05
                     enabled: false
                     Component.onCompleted: {
-                        minimumValue = 0.3 //Without this value gets set to 0.5
+                        minimumValue = 0.25 //Without this value gets set to 0.5
                         value = appSettings.windowScaling;
                         enabled = true;
                     }
@@ -80,10 +80,10 @@ Tab{
                     Layout.fillWidth: true
                     id: bloomSlider
                     onValueChanged: if (enabled) appSettings.bloomQuality = value;
-                    stepSize: 0.10
+                    stepSize: 0.05
                     enabled: false
                     Component.onCompleted: {
-                        minimumValue = 0.3
+                        minimumValue = 0.25
                         value = appSettings.bloomQuality;
                         enabled = true;
                     }
@@ -105,10 +105,10 @@ Tab{
                     Layout.fillWidth: true
                     id: burnInSlider
                     onValueChanged: if (enabled) appSettings.burnInQuality = value;
-                    stepSize: 0.10
+                    stepSize: 0.05
                     enabled: false
                     Component.onCompleted: {
-                        minimumValue = 0.3
+                        minimumValue = 0.25
                         value = appSettings.burnInQuality;
                         enabled = true;
                     }

app/qml/SettingsTerminalTab.qml

@@ -125,14 +125,14 @@ Tab{
                         height: 50
                         Layout.fillWidth: true
                         onColorSelected: appSettings._fontColor = color;
-                        button_color: appSettings._fontColor
+                        color: appSettings._fontColor
                     }
                     ColorButton{
                         name: qsTr("Background")
                         height: 50
                         Layout.fillWidth: true
                         onColorSelected: appSettings._backgroundColor = color;
-                        button_color: appSettings._backgroundColor
+                        color: appSettings._backgroundColor
                     }
                 }
             }

app/qml/ShaderTerminal.qml

@@ -26,6 +26,8 @@ ShaderEffect {
     property ShaderEffectSource blurredSource
     property ShaderEffectSource bloomSource
 
+    property real liveBlur: blurredSource && blurredSource.live ? 1.0 : 0.0
+
     property color fontColor: appSettings.fontColor
     property color backgroundColor: appSettings.backgroundColor
     property real bloom: appSettings.bloom * 2.5
@@ -160,7 +162,8 @@ ShaderEffect {
             uniform highp sampler2D bloomSource;
             uniform lowp float bloom;" : "") +
         (burnIn !== 0 ? "
-            uniform sampler2D blurredSource;" : "") +
+            uniform sampler2D blurredSource;
+            uniform lowp float liveBlur;" : "") +
         (staticNoise !== 0 ? "
             uniform highp float staticNoise;" : "") +
         (((staticNoise !== 0 || jitter !== 0 || rbgShift)
@@ -266,7 +269,7 @@ ShaderEffect {
             "vec3 txt_color = texture2D(source, txt_coords).rgb;" +
 
             (burnIn !== 0 ? "
-                vec4 txt_blur = texture2D(blurredSource, txt_coords);
+                vec4 txt_blur = liveBlur * texture2D(blurredSource, txt_coords);
                 txt_color = txt_color + txt_blur.rgb * txt_blur.a;"
             : "") +
 

app/qml/TerminalContainer.qml

@@ -1,6 +1,8 @@
 import QtQuick 2.2
 import QtGraphicalEffects 1.0
 
+import "utils.js" as Utils
+
 ShaderTerminal{
     property alias title: terminal.title
     property alias terminalSize: terminal.terminalSize
@@ -45,9 +47,10 @@ ShaderTerminal{
         asynchronous: true
         width: parent.width * appSettings.bloomQuality
         height: parent.height * appSettings.bloomQuality
+
         sourceComponent: FastBlur{
-            radius: 48 * appSettings.bloomQuality * appSettings.windowScaling
+            radius: Utils.lint(16, 48, appSettings.bloomQuality * appSettings.windowScaling);
-            source: terminal.mainTerminal
+            source: terminal.mainSource
             transparentBorder: true
         }
     }

app/qml/frames/utils/TerminalFrame.qml

@@ -83,7 +83,7 @@ Item{
         sourceComponent: FastBlur{
             id: frameReflectionEffect
             radius: 128
-            source: terminal.kterminal
+            source: terminal.mainSource
             smooth: false
         }
     }

app/qml/utils.js

@@ -1,5 +1,8 @@
 .pragma library
 
+function lint(a, b, t) {
+    return (1 - t) * a + (t) * b;
+}
 function mix(c1, c2, alpha){
     return Qt.rgba(c1.r * alpha + c2.r * (1-alpha),
                    c1.g * alpha + c2.g * (1-alpha),