From 766a98f43b03a5679d48b3b5e948bec469241289 Mon Sep 17 00:00:00 2001
From: Derek Stevens <nilix@nilfm.cc>
Date: Sat, 18 Mar 2023 21:54:53 -0600
Subject: [PATCH] implement range selection for listbox

---
 taro-ls.tal | 64 ++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 49 insertions(+), 15 deletions(-)

diff --git a/taro-ls.tal b/taro-ls.tal
index 86a40d8..77df468 100644
--- a/taro-ls.tal
+++ b/taro-ls.tal
@@ -12,6 +12,8 @@
 %MID_SEPARATOR { #0008 }
 %BOTTOM_SECTION { #0040 }
 
+( listbox helper macros )
+
 %LB_DATA { #02 ADD }
 %LB_LEN { #04 ADD }
 %LB_OFFSET { #06 ADD }
@@ -19,9 +21,10 @@
 %LB_TOP { #09 ADD }
 %LB_HEIGHT { #0b ADD }
 %LB_SELECT_IDX { #0c ADD }
-%SB_LEN { #0e ADD }
-%SB_POS { #0f ADD }
-%SB_STEP { #11 ADD }
+%LB_SELECT_LEN { #0e ADD }
+%SB_LEN { #10 ADD }
+%SB_POS { #11 ADD }
+%SB_STEP { #13 ADD }
 
 |00 @System     &vector $2 &wst      $1 &rst    $1 &eaddr  $2 &ecode  $1 &pad     $1 &r       $2 &g      $2 &b     $2 &debug  $1 &halt $1
 |10 @Console    &vector $2 &read     $1 &pad    $5 &write  $1 &error  $1
@@ -44,10 +47,10 @@
 @resizing [ $1 &x $2 &y $2 &dx $2 &dy $2 ]
 @decoding [ $1 &msg_type $1 &counting $1 &count $2 &processed $2 ]
 @mboxes [ &bytes $2 &data $2 &len $2 &offset $2 &elem_offset $1
-          &top $2 &height $1 &select_index $2
+          &top $2 &height $1 &select_index $2 &select_len $2
           &sb_len $1 &sb_pos $2 &sb_step $2 ]
 @list   [ &bytes $2 &data $2 &len $2 &offset $2 &elem_offset $1
-          &top $2 &height $1 &select_index $2
+          &top $2 &height $1 &select_index $2 &select_len $2
           &sb_len $1 &sb_pos $2 &sb_step $2 ]
 
 ( program )
@@ -64,6 +67,8 @@
   
   ;list_data .list/data STZ2
   ;mbox_data .mboxes/data STZ2
+  #0001 .list/select_len STZ2
+  #0001 .mboxes/select_len STZ2
   
   .Screen/height DEI2 TOP_SECTION BOTTOM_SECTION ADD2 MID_SEPARATOR ADD2 SUB2 #03 SFT2 NIP .list/height STZ
   TOP_SECTION #03 SFT2 NIP .mboxes/height STZ
@@ -72,6 +77,11 @@
   ;on_screen .Screen/vector DEO2
   ;on_mouse .Mouse/vector DEO2
   ;on_stdin .Console/vector DEO2
+  ;on_key .Controller/vector DEO2
+BRK
+
+@on_key ( -> )
+  .Controller/key DEI .Console/error DEO
 BRK
 
 @on_stdin ( -> )
@@ -139,8 +149,8 @@ JMP2r
 
 @on_mouse ( -> )
 
-  ;mbox_select_handler .mboxes .refresh/mboxes #0000 mouse_event_list
-  ;noop_list_click .list .refresh/list TOP_SECTION MID_SEPARATOR ADD2 mouse_event_list
+  ;mbox_select_handler .mboxes .refresh/mboxes #0000 #00 mouse_event_list
+  ;noop_list_click .list .refresh/list TOP_SECTION MID_SEPARATOR ADD2 #04 mouse_event_list
 
   .resizing LDZ #00 EQU ,&resz_check JCN
   ( resizing )
@@ -308,15 +318,18 @@ JMP2r
 JMP2r
 
 @get_entry_color ( list -- colorByte )
+  STHk LB_OFFSET LDZ2
+  STHkr LB_SELECT_IDX LDZ2
 
-  DUP LB_OFFSET LDZ2
-  ROT LB_SELECT_IDX LDZ2
-
-  NEQ2 ,&normal JCN
-
+  LTH2 ,&normal JCN
+  STHkr LB_OFFSET LDZ2
+  STHkr LB_SELECT_IDX LDZ2 STHkr LB_SELECT_LEN LDZ2 ADD2 #0001 SUB2
+  GTH2 ,&normal JCN
+  POPr
   ( selected )
     #04 JMP2r
   &normal
+    POPr
     #03
 JMP2r
 
@@ -403,8 +416,9 @@ JMP2r
 JMP2r
 
 
-@mouse_event_list ( clickhandler* list refresh ypos* -- )
+@mouse_event_list ( clickhandler* list refresh ypos* multiselect -- )
 
+  ,&multi STR
   ,&y STR2
   ,&r STR
   STH
@@ -421,7 +435,7 @@ JMP2r
   ( scroll_up )
   STHkr try_scroll_up_mouse
   ,&no_scroll JMP
-  
+  &multi $1
   &scroll_down
   STHkr try_scroll_down_mouse
   
@@ -431,7 +445,7 @@ JMP2r
 
   ( click handler here )
   .Mouse/state DEI #01 AND #00 EQU ,&done JCN
-  .Mouse/y DEI2 ,&y LDR2 SUB2 #03 SFT2 STHkr LB_TOP LDZ2 ADD2 STHkr LB_SELECT_IDX STZ2
+  ,&multi LDR ,&y LDR2 STHkr mouse_select_on_click
   STHr ROT ROT JSR2
   #01 ,&r LDR STZ
   JMP2r 
@@ -443,6 +457,26 @@ JMP2r
   POP2
 JMP2r
 
+@mouse_select_on_click ( multi ypos list -- )
+  STH
+  ,&y STR2
+  .Controller/button DEI #04 AND AND ,&multiselect JCN
+  #0001 STHkr LB_SELECT_LEN STZ2
+  .Mouse/y DEI2 ,&y LDR2 SUB2 #03 SFT2 STHkr LB_TOP LDZ2 ADD2 STHkr LB_SELECT_IDX STZ2
+  POPr
+  JMP2r
+  &multiselect
+  ( first_to_last )
+  .Mouse/y DEI2 ,&y LDR2 SUB2 #03 SFT2 STHkr LB_TOP LDZ2 ADD2
+  DUP2 STHkr LB_SELECT_IDX LDZ2 LTH2 ,&last_to_first JCN
+  STHkr LB_SELECT_IDX LDZ2 SUB2 INC2 STHkr LB_SELECT_LEN STZ2
+  POPr JMP2r
+  &last_to_first
+  DUP2 STHkr LB_SELECT_IDX LDZ2 SWP2 SUB2 INC2 STHkr LB_SELECT_LEN STZ2
+  STHr LB_SELECT_IDX STZ2
+JMP2r
+&y $2
+
 @mbox_select_handler ( list -- )
 
   #0000 ,&idx STR2