From 6e89f6c63f9ed24cbf5a85f7b170ebfd1c8a175a Mon Sep 17 00:00:00 2001
From: "Kartik K. Agaram" <vc@akkartik.com>
Date: Thu, 19 May 2022 22:02:18 -0700
Subject: [PATCH] make text and drawings the same width

---
 drawing.lua | 28 +++++++++++++++-------------
 main.lua    |  8 +++-----
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/drawing.lua b/drawing.lua
index 1bd6ac7..16ffe6f 100644
--- a/drawing.lua
+++ b/drawing.lua
@@ -2,15 +2,17 @@
 Drawing = {}
 geom = require 'geom'
 
+-- All drawings span 100% of some conceptual 'page width' and divide it up
+-- into 256 parts.
 function Drawing.draw(line)
   local pmx,pmy = love.mouse.getX(), love.mouse.getY()
-  if pmx < 16+Drawing_width and pmy > line.y and pmy < line.y+Drawing.pixels(line.h) then
+  if pmx < 16+Line_width and pmy > line.y and pmy < line.y+Drawing.pixels(line.h) then
     love.graphics.setColor(0.75,0.75,0.75)
-    love.graphics.rectangle('line', 16,line.y, Drawing_width,Drawing.pixels(line.h))
+    love.graphics.rectangle('line', 16,line.y, Line_width,Drawing.pixels(line.h))
     if icon[Current_drawing_mode] then
-      icon[Current_drawing_mode](16+Drawing_width-20, line.y+4)
+      icon[Current_drawing_mode](16+Line_width-20, line.y+4)
     else
-      icon[Previous_drawing_mode](16+Drawing_width-20, line.y+4)
+      icon[Previous_drawing_mode](16+Line_width-20, line.y+4)
     end
 
     if love.mouse.isDown('1') and love.keyboard.isDown('h') then
@@ -178,7 +180,7 @@ end
 
 function Drawing.in_drawing(drawing, x,y)
   if drawing.y == nil then return false end  -- outside current page
-  return y >= drawing.y and y < drawing.y + Drawing.pixels(drawing.h) and x >= 16 and x < 16+Drawing_width
+  return y >= drawing.y and y < drawing.y + Drawing.pixels(drawing.h) and x >= 16 and x < 16+Line_width
 end
 
 function Drawing.mouse_pressed(drawing, x,y, button)
@@ -320,17 +322,17 @@ end
 
 function Drawing.keychord_pressed(chord)
   if chord == 'C-=' then
-    Drawing_width = Drawing_width/Zoom
+    Line_width = Line_width/Zoom
     Zoom = Zoom+0.5
-    Drawing_width = Drawing_width*Zoom
+    Line_width = Line_width*Zoom
   elseif chord == 'C--' then
-    Drawing_width = Drawing_width/Zoom
+    Line_width = Line_width/Zoom
     Zoom = Zoom-0.5
-    Drawing_width = Drawing_width*Zoom
+    Line_width = Line_width*Zoom
   elseif chord == 'C-0' then
-    Drawing_width = Drawing_width/Zoom
+    Line_width = Line_width/Zoom
     Zoom = 1.5
-    Drawing_width = Drawing_width*Zoom
+    Line_width = Line_width*Zoom
   elseif chord == 'C-f' and not love.mouse.isDown('1') then
     Current_drawing_mode = 'freehand'
   elseif chord == 'C-g' and not love.mouse.isDown('1') then
@@ -688,10 +690,10 @@ function Drawing.near(point, x,y)
 end
 
 function Drawing.pixels(n)  -- parts to pixels
-  return math.floor(n*Drawing_width/256)
+  return math.floor(n*Line_width/256)
 end
 function Drawing.coord(n)  -- pixels to parts
-  return math.floor(n*256/Drawing_width)
+  return math.floor(n*256/Line_width)
 end
 
 function table.find(h, x)
diff --git a/main.lua b/main.lua
index 8e3641c..d058e53 100644
--- a/main.lua
+++ b/main.lua
@@ -46,9 +46,7 @@ Screen_width, Screen_height, Screen_flags = 0, 0, nil
 Current_drawing_mode = 'line'
 Previous_drawing_mode = nil
 
--- All drawings span 100% of some conceptual 'page width' and divide it up
--- into 256 parts. `Drawing_width` describes their width in pixels.
-Drawing_width = nil  -- pixels
+Line_width = nil  -- maximum width available to either text or drawings, in pixels
 
 Zoom = 1.5
 
@@ -63,7 +61,7 @@ function love.load(arg)
   Screen_height = Screen_height-100
   love.window.setMode(Screen_width, Screen_height)
   love.window.setTitle('Text with Lines')
-  Drawing_width = math.floor(Screen_width/2/40)*40
+  Line_width = math.floor(Screen_width/2/40)*40
   love.keyboard.setTextInput(true)  -- bring up keyboard on touch screen
   love.keyboard.setKeyRepeat(true)
   if #arg > 0 then
@@ -129,7 +127,7 @@ function love.draw()
       else
         line.y = y
 --?         y = Text.draw(line, 100, line_index, Cursor_line, Cursor_pos)
-        y = Text.draw(line, Drawing_width, line_index, Cursor_line, Cursor_pos)
+        y = Text.draw(line, Line_width, line_index, Cursor_line, Cursor_pos)
         y = y + math.floor(15*Zoom)  -- text height
       end
     end