New tweak: kitchen-prefs-color

Disabled in default dfhack.init to avoid confusion

NEWS

@@ -16,6 +16,7 @@ DFHack Future
         item-descriptions:  holds a default description for every item type and subtype
         warn-starving:  check for starving, thirsty, or very drowsy units and pause with warning if any are found
     New tweaks
+        kitchen-prefs-color: Changes color of enabled items to green in kitchen preferences
         kitchen-prefs-empty: Fixes a layout issue with empty kitchen tabs
     Fixes
         Plugins with vmethod hooks can now be reloaded on OS X

Readme.rst

@@ -1313,6 +1313,7 @@ Subcommands that persist until disabled or DF quits:
 :fps-min:        Fixes the in-game minimum FPS setting
 :import-priority-category:  Allows changing the priority of all goods in a
                             category when discussing an import agreement with the liaison
+:kitchen-prefs-color:       Changes color of enabled items to green in kitchen preferences
 :kitchen-prefs-empty:       Fixes a layout issue with empty kitchen tabs (bug 9000)
 :manager-quantity:          Removes the limit of 30 jobs per manager order
 :max-wheelbarrow:           Allows assigning more than 3 wheelbarrows to a stockpile

plugins/tweak/tweak.cpp

@@ -84,6 +84,7 @@
 #include "tweaks/fast-trade.h"
 #include "tweaks/fps-min.h"
 #include "tweaks/import-priority-category.h"
+#include "tweaks/kitchen-prefs-color.h"
 #include "tweaks/kitchen-prefs-empty.h"
 #include "tweaks/manager-quantity.h"
 #include "tweaks/max-wheelbarrow.h"
@@ -103,6 +104,7 @@ using namespace df::enums;
 DFHACK_PLUGIN("tweak");
 DFHACK_PLUGIN_IS_ENABLED(is_enabled);
 
+REQUIRE_GLOBAL(enabler);
 REQUIRE_GLOBAL(ui);
 REQUIRE_GLOBAL(ui_build_selector);
 REQUIRE_GLOBAL(ui_building_item_cursor);
@@ -186,6 +188,8 @@ DFhackCExport command_result plugin_init (color_ostream &out, std::vector <Plugi
         "  tweak import-priority-category [disable]\n"
         "    When meeting with a liaison, makes Shift+Left/Right arrow adjust\n"
         "    the priority of an entire category of imports.\n"
+        "  tweak kitchen-prefs-color [disable]\n"
+        "    Changes color of enabled items to green in kitchen preferences\n"
         "  tweak kitchen-prefs-empty [disable]\n"
         "    Fixes a layout issue with empty kitchen tabs (bug 9000)\n"
         "  tweak manager-quantity [disable]\n"
@@ -239,6 +243,8 @@ DFhackCExport command_result plugin_init (color_ostream &out, std::vector <Plugi
     TWEAK_HOOK("import-priority-category", takerequest_hook, feed);
     TWEAK_HOOK("import-priority-category", takerequest_hook, render);
 
+    TWEAK_HOOK("kitchen-prefs-color", kitchen_prefs_color_hook, render);
+
     TWEAK_HOOK("kitchen-prefs-empty", kitchen_prefs_empty_hook, render);
 
     TWEAK_HOOK("manager-quantity", manager_quantity_hook, feed);

plugins/tweak/tweaks/kitchen-prefs-color.h

@@ -0,0 +1,70 @@
+using namespace DFHack;
+using df::global::gps;
+
+struct kitchen_prefs_color_hook : df::viewscreen_kitchenprefst {
+    typedef df::viewscreen_kitchenprefst interpose_base;
+
+    static std::string read_string(unsigned x, unsigned y, size_t length)
+    {
+        std::string s;
+        for ( ; length; x++, length--)
+        {
+            auto tile = Screen::readTile(x, y);
+            if (!tile.valid())
+                break;
+            s += tile.ch;
+        }
+        return s;
+    }
+
+    static void recolor(unsigned x, unsigned y, std::string str, UIColor color)
+    {
+        static Screen::Pen tile;
+        for (unsigned i = 0; i < str.size(); i++)
+        {
+            tile = Screen::readTile(x + i, y);
+            if (!tile.valid() || tile.ch != str[i])
+                return;
+        }
+        for (unsigned i = 0; i < str.size(); i++)
+        {
+            tile = Screen::readTile(x + i, y);
+            tile.fg = color;
+            Screen::paintTile(tile, x + i, y);
+        }
+    }
+
+    DEFINE_VMETHOD_INTERPOSE(void, render, ())
+    {
+        INTERPOSE_NEXT(render)();
+        /* DF uses a slightly complicated algorithm to position the Number and
+           Permissions columns (i.e. not a constant distance from either margin).
+           Detecting light blue "Cook" and "Brew" strings should be sufficient,
+           but reverse-engineering the algorithm could be slightly faster. */
+
+        if (!item_type[page].size())
+           return;
+
+        int start_x = 0,
+            start_y = 6;
+        for (int x = 0; x < gps->dimx; x++)
+        {
+            std::string word = read_string(x, start_y, 4);
+            if (word == "Cook" || word == "----")
+            {
+                start_x = x;
+                break;
+            }
+        }
+        if (!start_x)
+            return;
+
+        for (int y = start_y; y < gps->dimy; y++)
+        {
+            recolor(start_x, y, "Cook", COLOR_GREEN);
+            recolor(start_x + 5, y, "Brew", COLOR_GREEN);
+        }
+    }
+};
+
+IMPLEMENT_VMETHOD_INTERPOSE(kitchen_prefs_color_hook, render);