First implementation of imageless frame.

app/qml/NewTerminalFrame.qml

@@ -0,0 +1,62 @@
+import QtQuick 2.0
+
+import "utils.js" as Utils
+
+ShaderEffect {
+
+    property real screenCurvature: appSettings.screenCurvature * appSettings.screenCurvatureSize
+    property real ambientLight: Utils.lint(0.1, 0.9, appSettings.ambientLight)
+    property color frameColor: "#dedede"
+    property color fontColor: appSettings.fontColor
+    property color backgroundColor: appSettings.backgroundColor
+    property color reflectionColor: Utils.mix(fontColor, backgroundColor, 0.2)
+
+    visible: screenCurvature != 0
+
+    fragmentShader: "
+        #ifdef GL_ES
+            precision mediump float;
+        #endif
+
+        uniform lowp float screenCurvature;
+        uniform lowp float ambientLight;
+        uniform highp float qt_Opacity;
+        uniform lowp vec4 frameColor;
+        uniform lowp vec4 reflectionColor;
+
+        varying highp vec2 qt_TexCoord0;
+
+        vec2 distortCoordinates(vec2 coords){
+            vec2 cc = (coords - vec2(0.5));
+            float dist = dot(cc, cc) * screenCurvature;
+            return (coords + cc * (1.0 + dist) * dist);
+        }
+
+        float max2(vec2 v) {
+            return max(v.x, v.y);
+        }
+
+        float sum2(vec2 v) {
+            return v.x + v.y;
+        }
+
+        void main(){
+            vec2 staticCoords = qt_TexCoord0;
+            vec2 coords = distortCoordinates(staticCoords);
+
+            vec3 color = mix(reflectionColor.rgb, frameColor.rgb, ambientLight);
+            float dist = 0.5 * screenCurvature;
+
+            float shadowMask = 0.00 + max2(1.0 - smoothstep(vec2(-dist), vec2(0.0), coords) + smoothstep(vec2(1.0), vec2(1.0 + dist), coords));
+            shadowMask = clamp(0.0, 1.0, shadowMask);
+            color *= pow(shadowMask, 0.5);
+
+            float alpha = sum2(1.0 - step(0.0, coords) + step(1.0, coords));
+            alpha = clamp(alpha, 0.0, 1.0) * mix(1.0, 0.9, pow(shadowMask, 0.5));
+
+            gl_FragColor = vec4(color * alpha, alpha);
+        }
+    "
+
+    onStatusChanged: if (log) console.log(log) //Print warning messages
+}