Merge pull request 'Revert "Make the burn-in look more like the real thing."' (#862) from revert-burnin into master

Reviewed-on: #862

.gitignore

@@ -48,3 +48,6 @@ cool-retro-term
 
 .DS_Store
 *.app
+
+# IntelliJ
+.idea

app/main.cpp

@@ -58,6 +58,7 @@ int main(int argc, char *argv[])
         cout << "  -p|--profile <prof> Run cool-retro-term with the given profile." << '\n';
         cout << "  -h|--help           Print this help." << '\n';
         cout << "  --verbose           Print additional information such as profiles and settings." << '\n';
+        cout << "  -v|--version        Print the program name and version." << '\n';
         return 0;
     }
 

app/qml/ApplicationSettings.qml

@@ -32,7 +32,7 @@ QtObject {
     readonly property real maximumFontScaling: 2.50
 
     readonly property real minBurnInFadeTime: 160
-    readonly property real maxBurnInFadeTime: 160000
+    readonly property real maxBurnInFadeTime: 1600
 
     property bool isMacOS: Qt.platform.os === "osx"
 

app/qml/BurnInEffect.qml

@@ -29,8 +29,8 @@ Loader {
     property real lastUpdate: 0
     property real prevLastUpdate: 0
 
-    property real burnIn: appSettings.burnIn;
-    property real burnInFadeTime: (1 / Utils.lint(_minBurnInFadeTime, _maxBurnInFadeTime, burnIn))*64
+    property real burnIn: appSettings.burnIn
+    property real burnInFadeTime: 1 / Utils.lint(_minBurnInFadeTime, _maxBurnInFadeTime, burnIn)
     property real _minBurnInFadeTime: appSettings.minBurnInFadeTime
     property real _maxBurnInFadeTime: appSettings.maxBurnInFadeTime
 
@@ -146,8 +146,9 @@ Loader {
                     float prevMask = accColor.a;
                     float currMask = rgb2grey(txtColor);
 
-                    highp float blurDecay = clamp(pow(0.5, burnInTime * (lastUpdate - prevLastUpdate)), 0.0, 1.0);
-                    vec3 blurColor = accColor.rgb * vec3(blurDecay);
+                    highp float blurDecay = clamp((lastUpdate - prevLastUpdate) * burnInTime, 0.0, 1.0);
+                    blurDecay = max(0.0, blurDecay - prevMask);
+                    vec3 blurColor = accColor.rgb - vec3(blurDecay);
                     vec3 color = max(blurColor, txtColor);
 
                     gl_FragColor = vec4(color, currMask);

app/qml/PreprocessedTerminal.qml

@@ -58,6 +58,13 @@ Item{
             kterminal.pasteClipboard()
         }
     }
+    Connections {
+        target: pasteActionAlt
+
+        onTriggered: {
+            kterminal.pasteSelection()
+        }
+    }
 
     //When settings are updated sources need to be redrawn.
     Connections {

app/qml/ShaderTerminal.qml

@@ -247,6 +247,17 @@ Item {
              "  return outColor;
              }" +
 
+             //pseudo-random vector
+             //https://stackoverflow.com/a/10625698
+             "float random( vec2 p )
+             {
+                 vec2 K1 = vec2(
+                     23.14069263277926, // e^pi (Gelfond's constant)
+                     2.665144142690225 // 2^sqrt(2) (Gelfond-Schneider constant)
+                 );
+                 return fract( cos( dot(p,K1) ) * 12345.6789 );
+             }" +
+
              "void main() {" +
                  "vec2 cc = vec2(0.5) - qt_TexCoord0;" +
                  "float distance = length(cc);" +
@@ -285,7 +296,11 @@ Item {
                  : "") +
 
                  (jitter !== 0 || staticNoise !== 0 ?
-                     "vec4 noiseTexel = texture2D(noiseSource, scaleNoiseSize * coords + vec2(fract(time / 51.0), fract(time / 237.0)));"
+                 "vec4 noiseTexel = texture2D(
+                     noiseSource, scaleNoiseSize * coords
+                     + vec2(0.0, random(vec2(fract(time / 237.0), 822.9582)))
+                     + vec2(fract(time / 31.0), fract(time / 177.0))
+                 );"
                  : "") +
 
                  (jitter !== 0 ? "
@@ -306,8 +321,8 @@ Item {
 
                  (burnIn !== 0 ? "
                      vec4 txt_blur = texture2D(burnInSource, staticCoords);
-                     float blurDecay = clamp(pow(0.5, burnInTime * (time - burnInLastUpdate)), 0.0, 1.0);
-                     vec3 burnInColor = txt_blur.rgb * vec3(blurDecay);
+                     float blurDecay = clamp((time - burnInLastUpdate) * burnInTime, 0.0, 1.0);
+                     vec3 burnInColor = 0.65 * (txt_blur.rgb - vec3(blurDecay));
                      txt_color = max(txt_color, convertWithChroma(burnInColor));"
                  : "") +
 

app/qml/main.qml

@@ -116,6 +116,11 @@ ApplicationWindow {
         text: qsTr("Paste")
         shortcut: "Ctrl+Shift+V"
     }
+    Action {
+        id: pasteActionAlt
+        text: qsTr("Paste selection")
+        shortcut: "Shift+Insert"
+    }
     Action {
         id: zoomIn
         text: qsTr("Zoom In")