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<span class="SalientComment">## putting the environment together out of editors</span>
<span class="Comment">#</span>
<span class="Comment"># Consists of one editor on the left for recipes and one on the right for the</span>
<span class="Comment"># sandbox.</span>
<span class="muRecipe">def!</span> main [
<span class="Constant">local-scope</span>
open-console
initial-recipe:text<span class="Special"> <- </span>restore <span class="Constant">[recipes.mu]</span>
initial-sandbox:text<span class="Special"> <- </span>new <span class="Constant">[]</span>
hide-screen <span class="Constant">0/screen</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment <span class="Constant">0/screen</span>, initial-recipe, initial-sandbox
render-all <span class="Constant">0/screen</span>, env, render
event-loop <span class="Constant">0/screen</span>, <span class="Constant">0/console</span>, env
<span class="Comment"># never gets here</span>
]
<span class="muData">container</span> environment [
recipes:&:editor
current-sandbox:&:editor
sandbox-in-focus?:bool <span class="Comment"># false => cursor in recipes; true => cursor in current-sandbox</span>
]
<span class="muRecipe">def</span> new-programming-environment screen:&:screen, initial-recipe-contents:text, initial-sandbox-contents:text<span class="muRecipe"> -> </span>result:&:environment, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
width:num<span class="Special"> <- </span>screen-width screen
height:num<span class="Special"> <- </span>screen-height screen
<span class="Comment"># top menu</span>
result<span class="Special"> <- </span>new <span class="Constant">environment:type</span>
draw-horizontal screen, <span class="Constant">0</span>, <span class="Constant">0/left</span>, width, <span class="Constant">32/space</span>, <span class="Constant">0/black</span>, <span class="Constant">238/grey</span>
button-start:num<span class="Special"> <- </span>subtract width, <span class="Constant">20</span>
button-on-screen?:bool<span class="Special"> <- </span>greater-or-equal button-start, <span class="Constant">0</span>
assert button-on-screen?, <span class="Constant">[screen too narrow for menu]</span>
screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0/row</span>, button-start
print screen, <span class="Constant">[ run (F4) ]</span>, <span class="Constant">255/white</span>, <span class="Constant">161/reddish</span>
<span class="Comment"># dotted line down the middle</span>
divider:num, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span>
draw-vertical screen, divider, <span class="Constant">1/top</span>, height, <span class="Constant">9482/vertical-dotted</span>
<span class="Comment"># recipe editor on the left</span>
recipes:&:editor<span class="Special"> <- </span>new-editor initial-recipe-contents, screen, <span class="Constant">0/left</span>, divider/right
<span class="Comment"># sandbox editor on the right</span>
sandbox-left:num<span class="Special"> <- </span>add divider, <span class="Constant">1</span>
current-sandbox:&:editor<span class="Special"> <- </span>new-editor initial-sandbox-contents, screen, sandbox-left, width/right
*result<span class="Special"> <- </span>put *result, <span class="Constant">recipes:offset</span>, recipes
*result<span class="Special"> <- </span>put *result, <span class="Constant">current-sandbox:offset</span>, current-sandbox
*result<span class="Special"> <- </span>put *result, <span class="Constant">sandbox-in-focus?:offset</span>, <span class="Constant">0/false</span>
<span class="Constant"> <programming-environment-initialization></span>
]
<span class="muRecipe">def</span> event-loop screen:&:screen, console:&:console, env:&:environment<span class="muRecipe"> -> </span>screen:&:screen, console:&:console, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
sandbox-in-focus?:bool<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span>
<span class="Comment"># if we fall behind we'll stop updating the screen, but then we have to</span>
<span class="Comment"># render the entire screen when we catch up.</span>
<span class="Comment"># todo: test this</span>
render-all-on-no-more-events?:bool<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
<span class="Delimiter">{</span>
<span class="Comment"># looping over each (keyboard or touch) event as it occurs</span>
<span class="Constant"> +next-event</span>
e:event, console, found?:bool, quit?:bool<span class="Special"> <- </span>read-event console
<span class="muControl">loop-unless</span> found?
<span class="muControl">break-if</span> quit? <span class="Comment"># only in tests</span>
trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[next-event]</span>
<span class="Constant"> <handle-event></span>
<span class="Comment"># check for global events that will trigger regardless of which editor has focus</span>
<span class="Delimiter">{</span>
k:num, is-keycode?:bool<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">keycode:variant</span>
<span class="muControl">break-unless</span> is-keycode?
<span class="Constant"> <global-keypress></span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
c:char, is-unicode?:bool<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">text:variant</span>
<span class="muControl">break-unless</span> is-unicode?
<span class="Constant"> <global-type></span>
<span class="Delimiter">}</span>
<span class="Comment"># 'touch' event - send to both sides, see what picks it up</span>
<span class="Delimiter">{</span>
t:touch-event, is-touch?:bool<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">touch:variant</span>
<span class="muControl">break-unless</span> is-touch?
<span class="Comment"># ignore all but 'left-click' events for now</span>
<span class="Comment"># todo: test this</span>
touch-type:num<span class="Special"> <- </span>get t, <span class="Constant">type:offset</span>
is-left-click?:bool<span class="Special"> <- </span>equal touch-type, <span class="Constant">65513/mouse-left</span>
<span class="muControl">loop-unless</span> is-left-click?, +next-event
click-row:num<span class="Special"> <- </span>get t, <span class="Constant">row:offset</span>
click-column:num<span class="Special"> <- </span>get t, <span class="Constant">column:offset</span>
<span class="Comment"># later exceptions for non-editor touches will go here</span>
<span class="Constant"> <global-touch></span>
<span class="Comment"># send to both editors</span>
_<span class="Special"> <- </span>move-cursor-in-editor screen, recipes, t
sandbox-in-focus?:bool<span class="Special"> <- </span>move-cursor-in-editor screen, current-sandbox, t
*env<span class="Special"> <- </span>put *env, <span class="Constant">sandbox-in-focus?:offset</span>, sandbox-in-focus?
screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
<span class="Comment"># 'resize' event - redraw editor</span>
<span class="Comment"># todo: test this after supporting resize in assume-console</span>
<span class="Delimiter">{</span>
r:resize-event, is-resize?:bool<span class="Special"> <- </span>maybe-convert e:event, <span class="Constant">resize:variant</span>
<span class="muControl">break-unless</span> is-resize?
<span class="Comment"># if more events, we're still resizing; wait until we stop</span>
more-events?:bool<span class="Special"> <- </span>has-more-events? console
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> more-events?
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> more-events?
env, screen<span class="Special"> <- </span>resize screen, env
screen<span class="Special"> <- </span>render-all screen, env, render-without-moving-cursor
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span> <span class="Comment"># full render done</span>
<span class="Delimiter">}</span>
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
<span class="Comment"># if it's not global and not a touch event, send to appropriate editor</span>
<span class="Delimiter">{</span>
hide-screen screen
sandbox-in-focus?:bool<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> sandbox-in-focus?
screen, recipes, render?:bool<span class="Special"> <- </span>handle-keyboard-event screen, recipes, e:event
<span class="Comment"># refresh screen only if no more events</span>
<span class="Comment"># if there are more events to process, wait for them to clear up, then make sure you render-all afterward.</span>
more-events?:bool<span class="Special"> <- </span>has-more-events? console
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> more-events?
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span>
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> more-events?
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> render-all-on-no-more-events?
<span class="Comment"># no more events, and we have to force render</span>
screen<span class="Special"> <- </span>render-all screen, env, render
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Comment"># no more events, no force render</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> render?
screen<span class="Special"> <- </span>render-recipes screen, env, render
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> sandbox-in-focus?
screen, current-sandbox, render?:bool<span class="Special"> <- </span>handle-keyboard-event screen, current-sandbox, e:event
<span class="Comment"># refresh screen only if no more events</span>
<span class="Comment"># if there are more events to process, wait for them to clear up, then make sure you render-all afterward.</span>
more-events?:bool<span class="Special"> <- </span>has-more-events? console
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> more-events?
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">1/true</span> <span class="Comment"># no rendering now, full rendering on some future event</span>
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> more-events?
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> render-all-on-no-more-events?
<span class="Comment"># no more events, and we have to force render</span>
screen<span class="Special"> <- </span>render-all screen, env, render
render-all-on-no-more-events?<span class="Special"> <- </span>copy <span class="Constant">0/false</span>
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Comment"># no more events, no force render</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> render?
screen<span class="Special"> <- </span>render-sandbox-side screen, env, render
<span class="muControl">jump</span> +finish-event
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Constant"> +finish-event</span>
screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
show-screen screen
<span class="Delimiter">}</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
<span class="muRecipe">def</span> resize screen:&:screen, env:&:environment<span class="muRecipe"> -> </span>env:&:environment, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
clear-screen screen <span class="Comment"># update screen dimensions</span>
width:num<span class="Special"> <- </span>screen-width screen
divider:num, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span>
<span class="Comment"># update recipe editor</span>
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
right:num<span class="Special"> <- </span>subtract divider, <span class="Constant">1</span>
*recipes<span class="Special"> <- </span>put *recipes, <span class="Constant">right:offset</span>, right
<span class="Comment"># reset cursor (later we'll try to preserve its position)</span>
*recipes<span class="Special"> <- </span>put *recipes, <span class="Constant">cursor-row:offset</span>, <span class="Constant">1</span>
*recipes<span class="Special"> <- </span>put *recipes, <span class="Constant">cursor-column:offset</span>, <span class="Constant">0</span>
<span class="Comment"># update sandbox editor</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
left:num<span class="Special"> <- </span>add divider, <span class="Constant">1</span>
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">left:offset</span>, left
right:num<span class="Special"> <- </span>subtract width, <span class="Constant">1</span>
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">right:offset</span>, right
<span class="Comment"># reset cursor (later we'll try to preserve its position)</span>
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">cursor-row:offset</span>, <span class="Constant">1</span>
*current-sandbox<span class="Special"> <- </span>put *current-sandbox, <span class="Constant">cursor-column:offset</span>, left
]
<span class="Comment"># Variant of 'render' that updates cursor-row and cursor-column based on</span>
<span class="Comment"># before-cursor (rather than the other way around). If before-cursor moves</span>
<span class="Comment"># off-screen, it resets cursor-row and cursor-column.</span>
<span class="muRecipe">def</span> render-without-moving-cursor screen:&:screen, editor:&:editor<span class="muRecipe"> -> </span>last-row:num, last-column:num, screen:&:screen, editor:&:editor [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">return-unless</span> editor, <span class="Constant">1/top</span>, <span class="Constant">0/left</span>, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>
left:num<span class="Special"> <- </span>get *editor, <span class="Constant">left:offset</span>
screen-height:num<span class="Special"> <- </span>screen-height screen
right:num<span class="Special"> <- </span>get *editor, <span class="Constant">right:offset</span>
curr:&:duplex-list:char<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span>
prev:&:duplex-list:char<span class="Special"> <- </span>copy curr <span class="Comment"># just in case curr becomes null and we can't compute prev</span>
curr<span class="Special"> <- </span>next curr
<span class="Constant"> +render-loop-initialization</span>
color:num<span class="Special"> <- </span>copy <span class="Constant">7/white</span>
row:num<span class="Special"> <- </span>copy <span class="Constant">1/top</span>
column:num<span class="Special"> <- </span>copy left
<span class="Comment"># save before-cursor</span>
old-before-cursor:&:duplex-list:char<span class="Special"> <- </span>get *editor, <span class="Constant">before-cursor:offset</span>
<span class="Comment"># initialze cursor-row/cursor-column/before-cursor to the top of the screen</span>
<span class="Comment"># by default</span>
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">cursor-row:offset</span>, row
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">cursor-column:offset</span>, column
top-of-screen:&:duplex-list:char<span class="Special"> <- </span>get *editor, <span class="Constant">top-of-screen:offset</span>
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">before-cursor:offset</span>, top-of-screen
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="Delimiter">{</span>
<span class="Constant"> +next-character</span>
<span class="muControl">break-unless</span> curr
off-screen?:bool<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">break-if</span> off-screen?
<span class="Comment"># if we find old-before-cursor still on the new resized screen, update</span>
<span class="Comment"># editor.cursor-row and editor.cursor-column based on</span>
<span class="Comment"># old-before-cursor</span>
<span class="Delimiter">{</span>
at-cursor?:bool<span class="Special"> <- </span>equal old-before-cursor, prev
<span class="muControl">break-unless</span> at-cursor?
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">cursor-row:offset</span>, row
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">cursor-column:offset</span>, column
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">before-cursor:offset</span>, old-before-cursor
<span class="Delimiter">}</span>
c:char<span class="Special"> <- </span>get *curr, <span class="Constant">value:offset</span>
<span class="Constant"> <character-c-received></span>
<span class="Delimiter">{</span>
<span class="Comment"># newline? move to left rather than 0</span>
newline?:bool<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span>
<span class="muControl">break-unless</span> newline?
<span class="Comment"># clear rest of line in this window</span>
clear-line-until screen, right
<span class="Comment"># skip to next line</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
column<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
curr<span class="Special"> <- </span>next curr
prev<span class="Special"> <- </span>next prev
<span class="muControl">loop</span> +next-character
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="Comment"># at right? wrap. even if there's only one more letter left; we need</span>
<span class="Comment"># room for clicking on the cursor after it.</span>
at-right?:bool<span class="Special"> <- </span>equal column, right
<span class="muControl">break-unless</span> at-right?
<span class="Comment"># print wrap icon</span>
wrap-icon:char<span class="Special"> <- </span>copy <span class="Constant">8617/loop-back-to-left</span>
print screen, wrap-icon, <span class="Constant">245/grey</span>
column<span class="Special"> <- </span>copy left
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="Comment"># don't increment curr</span>
<span class="muControl">loop</span> +next-character
<span class="Delimiter">}</span>
print screen, c, color
curr<span class="Special"> <- </span>next curr
prev<span class="Special"> <- </span>next prev
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
<span class="Comment"># save first character off-screen</span>
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">bottom-of-screen:offset</span>, curr
*editor<span class="Special"> <- </span>put *editor, <span class="Constant">bottom:offset</span>, row
<span class="muControl">return</span> row, column, screen/same-as-ingredient:<span class="Constant">0</span>, editor/same-as-ingredient:<span class="Constant">1</span>
]
<span class="muScenario">scenario</span> point-at-multiple-editors [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span>
<span class="Comment"># initialize both halves of screen</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[abc]</span>, <span class="Constant">[def]</span>
<span class="Comment"># focus on both sides</span>
assume-console [
left-click <span class="Constant">1</span>, <span class="Constant">1</span>
left-click <span class="Constant">1</span>, <span class="Constant">17</span>
]
<span class="Comment"># check cursor column in each</span>
run [
event-loop screen, console, env
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
<span class="Constant">5</span>:num/<span class="Special">raw <- </span>get *recipes, <span class="Constant">cursor-column:offset</span>
sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
<span class="Constant">7</span>:num/<span class="Special">raw <- </span>get *sandbox, <span class="Constant">cursor-column:offset</span>
]
memory-should-contain [
<span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">1</span>
<span class="Constant">7</span><span class="Special"> <- </span><span class="Constant">17</span>
]
]
<span class="muScenario">scenario</span> edit-multiple-editors [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span>
<span class="Comment"># initialize both halves of screen</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[abc]</span>, <span class="Constant">[def]</span>
render-all screen, env, render
<span class="Comment"># type one letter in each of them</span>
assume-console [
left-click <span class="Constant">1</span>, <span class="Constant">1</span>
type <span class="Constant">[0]</span>
left-click <span class="Constant">1</span>, <span class="Constant">17</span>
type <span class="Constant">[1]</span>
]
run [
event-loop screen, console, env
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
<span class="Constant">5</span>:num/<span class="Special">raw <- </span>get *recipes, <span class="Constant">cursor-column:offset</span>
sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
<span class="Constant">7</span>:num/<span class="Special">raw <- </span>get *sandbox, <span class="Constant">cursor-column:offset</span>
]
screen-should-contain [
<span class="Constant"> . run (F4) . # this line has a different background, but we don't test that yet</span>
<span class="Constant"> .a0bc ╎d1ef .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
memory-should-contain [
<span class="Constant">5</span><span class="Special"> <- </span><span class="Constant">2</span> <span class="Comment"># cursor column of recipe editor</span>
<span class="Constant">7</span><span class="Special"> <- </span><span class="Constant">18</span> <span class="Comment"># cursor column of sandbox editor</span>
]
<span class="Comment"># show the cursor at the right window</span>
run [
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> .a0bc ╎d1␣f .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> multiple-editors-cover-only-their-own-areas [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">60/width</span>, <span class="Constant">10/height</span>
run [
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[abc]</span>, <span class="Constant">[def]</span>
render-all screen, env, render
]
<span class="Comment"># divider isn't messed up</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> .abc ╎def .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎─────────────────────────────.</span>
<span class="Constant"> . ╎ .</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> editor-in-focus-keeps-cursor [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[abc]</span>, <span class="Constant">[def]</span>
render-all screen, env, render
<span class="Comment"># initialize programming environment and highlight cursor</span>
assume-console <span class="Constant">[]</span>
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># is cursor at the right place?</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> .␣bc ╎def .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># now try typing a letter</span>
assume-console [
type <span class="Constant">[z]</span>
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># cursor should still be right</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> .z␣bc ╎def .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muScenario">scenario</span> backspace-in-sandbox-editor-joins-lines [
<span class="Constant">local-scope</span>
trace-until <span class="Constant">100/app</span> <span class="Comment"># trace too long</span>
assume-screen <span class="Constant">30/width</span>, <span class="Constant">5/height</span>
<span class="Comment"># initialize sandbox side with two lines</span>
s:text<span class="Special"> <- </span>new <span class="Constant">[abc</span>
<span class="Constant">def]</span>
env:&:environment<span class="Special"> <- </span>new-programming-environment screen, <span class="Constant">[]</span>, s:text
render-all screen, env, render
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎abc .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎def .</span>
<span class="Constant"> . ╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
<span class="Comment"># position cursor at start of second line and hit backspace</span>
assume-console [
left-click <span class="Constant">2</span>, <span class="Constant">16</span>
press backspace
]
run [
event-loop screen, console, env
cursor:char<span class="Special"> <- </span>copy <span class="Constant">9251/␣</span>
print screen, cursor
]
<span class="Comment"># cursor moves to end of old line</span>
screen-should-contain [
<span class="Constant"> . run (F4) .</span>
<span class="Constant"> . ╎abc␣ef .</span>
<span class="Constant"> .╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╎──────────────.</span>
<span class="Constant"> . ╎ .</span>
]
]
<span class="muRecipe">def</span> render-all screen:&:screen, env:&:environment, <span class="Delimiter">{</span>render-editor: (recipe (address screen) (address editor)<span class="muRecipe"> -> </span>number number (address screen) (address editor))<span class="Delimiter">}</span><span class="muRecipe"> -> </span>screen:&:screen, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
trace <span class="Constant">10</span>, <span class="Constant">[app]</span>, <span class="Constant">[render all]</span>
hide-screen screen
<span class="Comment"># top menu</span>
trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render top menu]</span>
width:num<span class="Special"> <- </span>screen-width screen
draw-horizontal screen, <span class="Constant">0</span>, <span class="Constant">0/left</span>, width, <span class="Constant">32/space</span>, <span class="Constant">0/black</span>, <span class="Constant">238/grey</span>
button-start:num<span class="Special"> <- </span>subtract width, <span class="Constant">20</span>
button-on-screen?:bool<span class="Special"> <- </span>greater-or-equal button-start, <span class="Constant">0</span>
assert button-on-screen?, <span class="Constant">[screen too narrow for menu]</span>
screen<span class="Special"> <- </span>move-cursor screen, <span class="Constant">0/row</span>, button-start
print screen, <span class="Constant">[ run (F4) ]</span>, <span class="Constant">255/white</span>, <span class="Constant">161/reddish</span>
<span class="Comment"># dotted line down the middle</span>
trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render divider]</span>
divider:num, _<span class="Special"> <- </span>divide-with-remainder width, <span class="Constant">2</span>
height:num<span class="Special"> <- </span>screen-height screen
draw-vertical screen, divider, <span class="Constant">1/top</span>, height, <span class="Constant">9482/vertical-dotted</span>
<span class="Comment">#</span>
screen<span class="Special"> <- </span>render-recipes screen, env, render-editor
screen<span class="Special"> <- </span>render-sandbox-side screen, env, render-editor
<span class="Constant"> <render-components-end></span>
<span class="Comment">#</span>
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
sandbox-in-focus?:bool<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span>
screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
<span class="Comment">#</span>
show-screen screen
]
<span class="muRecipe">def</span> render-recipes screen:&:screen, env:&:environment, <span class="Delimiter">{</span>render-editor: (recipe (address screen) (address editor)<span class="muRecipe"> -> </span>number number (address screen) (address editor))<span class="Delimiter">}</span><span class="muRecipe"> -> </span>screen:&:screen, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
trace <span class="Constant">11</span>, <span class="Constant">[app]</span>, <span class="Constant">[render recipes]</span>
recipes:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">recipes:offset</span>
<span class="Comment"># render recipes</span>
left:num<span class="Special"> <- </span>get *recipes, <span class="Constant">left:offset</span>
right:num<span class="Special"> <- </span>get *recipes, <span class="Constant">right:offset</span>
row:num, column:num, screen<span class="Special"> <- </span>call render-editor, screen, recipes
clear-line-until screen, right
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="Constant"> <render-recipe-components-end></span>
<span class="Comment"># draw dotted line after recipes</span>
draw-horizontal screen, row, left, right, <span class="Constant">9480/horizontal-dotted</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
clear-screen-from screen, row, left, left, right
]
<span class="Comment"># replaced in a later layer</span>
<span class="muRecipe">def</span> render-sandbox-side screen:&:screen, env:&:environment, <span class="Delimiter">{</span>render-editor: (recipe (address screen) (address editor)<span class="muRecipe"> -> </span>number number (address screen) (address editor))<span class="Delimiter">}</span><span class="muRecipe"> -> </span>screen:&:screen, env:&:environment [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
current-sandbox:&:editor<span class="Special"> <- </span>get *env, <span class="Constant">current-sandbox:offset</span>
left:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">left:offset</span>
right:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">right:offset</span>
row:num, column:num, screen, current-sandbox<span class="Special"> <- </span>call render-editor, screen, current-sandbox
clear-line-until screen, right
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="Comment"># draw solid line after code (you'll see why in later layers)</span>
draw-horizontal screen, row, left, right
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
clear-screen-from screen, row, left, left, right
]
<span class="muRecipe">def</span> update-cursor screen:&:screen, recipes:&:editor, current-sandbox:&:editor, sandbox-in-focus?:bool, env:&:environment<span class="muRecipe"> -> </span>screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="Constant"> <update-cursor-special-cases></span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> sandbox-in-focus?
cursor-row:num<span class="Special"> <- </span>get *recipes, <span class="Constant">cursor-row:offset</span>
cursor-column:num<span class="Special"> <- </span>get *recipes, <span class="Constant">cursor-column:offset</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
<span class="muControl">break-unless</span> sandbox-in-focus?
cursor-row:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">cursor-row:offset</span>
cursor-column:num<span class="Special"> <- </span>get *current-sandbox, <span class="Constant">cursor-column:offset</span>
<span class="Delimiter">}</span>
screen<span class="Special"> <- </span>move-cursor screen, cursor-row, cursor-column
]
<span class="Comment"># like 'render' for texts, but with colorization for comments like in the editor</span>
<span class="muRecipe">def</span> render-code screen:&:screen, s:text, left:num, right:num, row:num<span class="muRecipe"> -> </span>row:num, screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
<span class="muControl">return-unless</span> s
color:num<span class="Special"> <- </span>copy <span class="Constant">7/white</span>
column:num<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
screen-height:num<span class="Special"> <- </span>screen-height screen
i:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
len:num<span class="Special"> <- </span>length *s
<span class="Delimiter">{</span>
<span class="Constant"> +next-character</span>
done?:bool<span class="Special"> <- </span>greater-or-equal i, len
<span class="muControl">break-if</span> done?
done?<span class="Special"> <- </span>greater-or-equal row, screen-height
<span class="muControl">break-if</span> done?
c:char<span class="Special"> <- </span>index *s, i
<span class="Constant"><character-c-received></span> <span class="Comment"># only line different from render</span>
<span class="Delimiter">{</span>
<span class="Comment"># at right? wrap.</span>
at-right?:bool<span class="Special"> <- </span>equal column, right
<span class="muControl">break-unless</span> at-right?
<span class="Comment"># print wrap icon</span>
wrap-icon:char<span class="Special"> <- </span>copy <span class="Constant">8617/loop-back-to-left</span>
print screen, wrap-icon, <span class="Constant">245/grey</span>
column<span class="Special"> <- </span>copy left
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="muControl">loop</span> +next-character <span class="Comment"># retry i</span>
<span class="Delimiter">}</span>
i<span class="Special"> <- </span>add i, <span class="Constant">1</span>
<span class="Delimiter">{</span>
<span class="Comment"># newline? move to left rather than 0</span>
newline?:bool<span class="Special"> <- </span>equal c, <span class="Constant">10/newline</span>
<span class="muControl">break-unless</span> newline?
<span class="Comment"># clear rest of line in this window</span>
<span class="Delimiter">{</span>
done?:bool<span class="Special"> <- </span>greater-than column, right
<span class="muControl">break-if</span> done?
space:char<span class="Special"> <- </span>copy <span class="Constant">32/space</span>
print screen, space
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
column<span class="Special"> <- </span>copy left
screen<span class="Special"> <- </span>move-cursor screen, row, column
<span class="muControl">loop</span> +next-character
<span class="Delimiter">}</span>
print screen, c, color
column<span class="Special"> <- </span>add column, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
was-at-left?:bool<span class="Special"> <- </span>equal column, left
clear-line-until screen, right
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> was-at-left?
row<span class="Special"> <- </span>add row, <span class="Constant">1</span>
<span class="Delimiter">}</span>
move-cursor screen, row, left
]
<span class="Comment"># ctrl-l - redraw screen (just in case it printed junk somehow)</span>
<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [
<span class="Delimiter">{</span>
redraw-screen?:bool<span class="Special"> <- </span>equal c, <span class="Constant">12/ctrl-l</span>
<span class="muControl">break-unless</span> redraw-screen?
screen<span class="Special"> <- </span>render-all screen, env:&:environment, render
sync-screen screen
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
]
<span class="Comment"># ctrl-n - switch focus</span>
<span class="Comment"># todo: test this</span>
<span class="muRecipe">after</span> <span class="Constant"><global-type></span> [
<span class="Delimiter">{</span>
switch-side?:bool<span class="Special"> <- </span>equal c, <span class="Constant">14/ctrl-n</span>
<span class="muControl">break-unless</span> switch-side?
sandbox-in-focus?:bool<span class="Special"> <- </span>get *env, <span class="Constant">sandbox-in-focus?:offset</span>
sandbox-in-focus?<span class="Special"> <- </span>not sandbox-in-focus?
*env<span class="Special"> <- </span>put *env, <span class="Constant">sandbox-in-focus?:offset</span>, sandbox-in-focus?
screen<span class="Special"> <- </span>update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
<span class="muControl">loop</span> +next-event
<span class="Delimiter">}</span>
]
<span class="SalientComment">## helpers</span>
<span class="muRecipe">def</span> draw-vertical screen:&:screen, col:num, y:num, bottom:num<span class="muRecipe"> -> </span>screen:&:screen [
<span class="Constant">local-scope</span>
<span class="Constant">load-ingredients</span>
style:char, style-found?:bool<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="muControl">break-if</span> style-found?
style<span class="Special"> <- </span>copy <span class="Constant">9474/vertical</span>
<span class="Delimiter">}</span>
color:num, color-found?:bool<span class="Special"> <- </span><span class="Constant">next-ingredient</span>
<span class="Delimiter">{</span>
<span class="Comment"># default color to white</span>
<span class="muControl">break-if</span> color-found?
color<span class="Special"> <- </span>copy <span class="Constant">245/grey</span>
<span class="Delimiter">}</span>
<span class="Delimiter">{</span>
continue?:bool<span class="Special"> <- </span>lesser-than y, bottom
<span class="muControl">break-unless</span> continue?
screen<span class="Special"> <- </span>move-cursor screen, y, col
print screen, style, color
y<span class="Special"> <- </span>add y, <span class="Constant">1</span>
<span class="muControl">loop</span>
<span class="Delimiter">}</span>
]
</pre>
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