Add layout support for double size lines

js/term/screen.js

@@ -90,6 +90,7 @@ module.exports = class TermScreen extends EventEmitter {
     this.screenFG = []
     this.screenBG = []
     this.screenAttrs = []
+    this.screenLines = []
 
     let selecting = false
 
@@ -266,6 +267,7 @@ module.exports = class TermScreen extends EventEmitter {
     this.screen.screenFG = new Array(width * height).fill(0)
     this.screen.screenBG = new Array(width * height).fill(0)
     this.screen.screenAttrs = new Array(width * height).fill(0)
+    this.screen.screenLines = new Array(height).fill(0)
   }
 
   updateLayout () {
@@ -288,6 +290,7 @@ module.exports = class TermScreen extends EventEmitter {
       screenBG: this.screenBG,
       screenSelection: selection,
       screenAttrs: this.screenAttrs,
+      screenLines: this.screenLines,
       cursor: this.cursor,
       statusScreen: this.window.statusScreen,
       reverseVideo: this.reverseVideo,

js/term/screen_layout.js

@@ -135,8 +135,9 @@ module.exports = class ScreenLayout extends EventEmitter {
 
     x = x / this._windowScale - this._padding
     y = y / this._windowScale - this._padding
-    x = Math.floor((x + (rounded ? cellSize.width / 2 : 0)) / cellSize.width)
     y = Math.floor(y / cellSize.height)
+    if (this.renderer.drawnScreenLines[y]) x /= 2 // double size
+    x = Math.floor((x + (rounded ? cellSize.width / 2 : 0)) / cellSize.width)
     x = Math.max(0, Math.min(this.window.width - 1, x))
     y = Math.max(0, Math.min(this.window.height - 1, y))
 
@@ -153,6 +154,8 @@ module.exports = class ScreenLayout extends EventEmitter {
   gridToScreen (x, y, withScale = false) {
     let cellSize = this.getCellSize()
 
+    if (this.renderer.drawnScreenLines[y]) x *= 2 // double size
+
     return [x * cellSize.width, y * cellSize.height].map(v => this._padding + (withScale ? v * this._windowScale : v))
   }