migrate dwarfmonitor widgets to overlay v2

dfhack-config/dwarfmonitor.json

@@ -1,21 +1,3 @@
 {
-	"widgets": [
-		{
-			"type": "weather",
-			"x": 22,
-			"y": -1
-		},
-		{
-			"type": "date",
-			"x": -30,
-			"y": 0,
-			"format": "Y-M-D"
-		},
-		{
-			"type": "misery",
-			"x": -2,
-			"y": -1,
-			"anchor": "right"
-		}
-	]
+	"date_format": "Y-M-D"
 }

dfhack-config/overlay/widgets/dwarfmonitor_cursor.json

@@ -0,0 +1,12 @@
+{
+    "pos": {
+        "x": 2,
+        "y": 2
+    },
+    "provider": "dwarfmonitor",
+    "class": "Widget_cursor",
+    "viewscreens": [
+        "dungeonmode",
+        "dwarfmode"
+    ]
+}

dfhack-config/overlay/widgets/dwarfmonitor_date.json

@@ -0,0 +1,11 @@
+{
+    "pos": {
+        "x": -16,
+        "y": 1
+    },
+    "provider": "dwarfmonitor",
+    "class": "Widget_date",
+    "viewscreens": [
+        "dwarfmode"
+    ]
+}

dfhack-config/overlay/widgets/dwarfmonitor_misery.json

@@ -0,0 +1,11 @@
+{
+    "pos": {
+        "x": -2,
+        "y": -1
+    },
+    "provider": "dwarfmonitor",
+    "class": "Widget_misery",
+    "viewscreens": [
+        "dwarfmode"
+    ]
+}

dfhack-config/overlay/widgets/dwarfmonitor_weather.json

@@ -0,0 +1,11 @@
+{
+    "pos": {
+        "x": 15,
+        "y": -1
+    },
+    "provider": "dwarfmonitor",
+    "class": "Widget_weather",
+    "viewscreens": [
+        "dwarfmode"
+    ]
+}

plugins/dwarfmonitor.cpp

@@ -52,7 +52,6 @@ using std::deque;
 
 DFHACK_PLUGIN("dwarfmonitor");
 DFHACK_PLUGIN_IS_ENABLED(is_enabled);
-REQUIRE_GLOBAL(current_weather);
 REQUIRE_GLOBAL(world);
 REQUIRE_GLOBAL(ui);
 
@@ -74,20 +73,8 @@ struct less_second {
     }
 };
 
-struct dwarfmonitor_configst {
-    std::string date_format;
-};
-static dwarfmonitor_configst dwarfmonitor_config;
-
-static bool monitor_jobs = false;
-static bool monitor_misery = true;
-static bool monitor_date = true;
-static bool monitor_weather = true;
 static map<df::unit *, deque<activity_type>> work_history;
 
-static int misery[] = { 0, 0, 0, 0, 0, 0, 0 };
-static bool misery_upto_date = false;
-
 static color_value monitor_colors[] =
 {
     COLOR_LIGHTRED,
@@ -151,102 +138,18 @@ static void move_cursor(df::coord &pos)
 
 static void open_stats_screen();
 
-namespace dm_lua {
-    static color_ostream_proxy *out;
-    static lua_State *state;
-    typedef int(*initializer)(lua_State*);
-    int no_args (lua_State *L) { return 0; }
-    void cleanup()
-    {
-        if (out)
-        {
-            delete out;
-            out = NULL;
-        }
-    }
-    bool init_call (const char *func)
-    {
-        if (!out)
-            out = new color_ostream_proxy(Core::getInstance().getConsole());
-        return Lua::PushModulePublic(*out, state, "plugins.dwarfmonitor", func);
-    }
-    bool safe_call (int nargs)
-    {
-        return Lua::SafeCall(*out, state, nargs, 0);
-    }
-
-    bool call (const char *func, initializer init = no_args)
-    {
-        Lua::StackUnwinder top(state);
-        if (!init_call(func))
-            return false;
-        int nargs = init(state);
-        return safe_call(nargs);
-    }
-
-    namespace api {
-        int monitor_state (lua_State *L)
-        {
-            std::string type = luaL_checkstring(L, 1);
-            if (type == "weather")
-                lua_pushboolean(L, monitor_weather);
-            else if (type == "misery")
-                lua_pushboolean(L, monitor_misery);
-            else if (type == "date")
-                lua_pushboolean(L, monitor_date);
-            else
-                lua_pushnil(L);
-            return 1;
-        }
-        int get_weather_counts (lua_State *L)
-        {
-            #define WEATHER_TYPES WTYPE(clear, None); WTYPE(rain, Rain); WTYPE(snow, Snow);
-            #define WTYPE(type, name) int type = 0;
-            WEATHER_TYPES
-            #undef WTYPE
-            int i, j;
-            for (i = 0; i < 5; ++i)
-            {
-                for (j = 0; j < 5; ++j)
-                {
-                    switch ((*current_weather)[i][j])
-                    {
-                        #define WTYPE(type, name) case weather_type::name: type++; break;
-                        WEATHER_TYPES
-                        #undef WTYPE
-                    }
-                }
-            }
-            lua_newtable(L);
-            #define WTYPE(type, name) Lua::TableInsert(L, #type, type);
-            WEATHER_TYPES
-            #undef WTYPE
-            #undef WEATHER_TYPES
-            return 1;
-        }
-        int get_misery_data (lua_State *L)
-        {
-            lua_newtable(L);
-            for (int i = 0; i < 7; i++)
-            {
-                Lua::Push(L, i);
-                lua_newtable(L);
-                Lua::TableInsert(L, "value", misery[i]);
-                Lua::TableInsert(L, "color", monitor_colors[i]);
-                Lua::TableInsert(L, "last", (i == 6));
-                lua_settable(L, -3);
-            }
-            return 1;
-        }
+static int getStressCategoryColors(lua_State *L) {
+    const size_t n = sizeof(monitor_colors)/sizeof(color_value);
+    lua_createtable(L, n, 0);
+    for (size_t i = 0; i < n; ++i) {
+        Lua::Push(L, monitor_colors[i]);
+        lua_rawseti(L, -2, i+1);
     }
+    return 1;
 }
 
-#define DM_LUA_FUNC(name) { #name, df::wrap_function(dm_lua::api::name, true) }
-#define DM_LUA_CMD(name) { #name, dm_lua::api::name }
 DFHACK_PLUGIN_LUA_COMMANDS {
-    DM_LUA_CMD(monitor_state),
-    DM_LUA_CMD(get_weather_counts),
-    DM_LUA_CMD(get_misery_data),
+    DFHACK_LUA_COMMAND(getStressCategoryColors),
     DFHACK_LUA_END
 };
 
@@ -1648,8 +1551,7 @@ public:
         return (selected_column == 1) ? dwarf_column.getFirstSelectedElem() : nullptr;
     }
 
-    void feed(set<df::interface_key> *input)
-    {
+    void feed(set<df::interface_key> *input) override {
         bool key_processed = false;
         switch (selected_column)
         {
@@ -1723,8 +1625,7 @@ public:
         }
     }
 
-    void render()
-    {
+    void render() override {
         using namespace df::enums::interface_key;
 
         if (Screen::isDismissed(this))
@@ -1751,7 +1652,7 @@ public:
             getSelectedUnit() ? COLOR_WHITE : COLOR_DARKGREY);
     }
 
-    std::string getFocusString() { return "dwarfmonitor_preferences"; }
+    std::string getFocusString() override { return "dwarfmonitor_preferences"; }
 
 private:
     ListColumn<size_t> preferences_column;
@@ -1762,13 +1663,11 @@ private:
 
     vector<preference_map> preferences_store;
 
-    void validateColumn()
-    {
+    void validateColumn() {
         set_to_limit(selected_column, 1);
     }
 
-    void resize(int32_t x, int32_t y)
-    {
+    void resize(int32_t x, int32_t y) override {
         dfhack_viewscreen::resize(x, y);
         preferences_column.resize();
         dwarf_column.resize();
@@ -1776,15 +1675,12 @@ private:
 };
 
 
-static void open_stats_screen()
-{
+static void open_stats_screen() {
     Screen::show(dts::make_unique<ViewscreenFortStats>(), plugin_self);
 }
 
-static void add_work_history(df::unit *unit, activity_type type)
-{
-    if (work_history.find(unit) == work_history.end())
-    {
+static void add_work_history(df::unit *unit, activity_type type) {
+    if (work_history.find(unit) == work_history.end()) {
         auto max_history = get_max_history();
         for (int i = 0; i < max_history; i++)
             work_history[unit].push_back(JOB_UNKNOWN);
@@ -1794,8 +1690,7 @@ static void add_work_history(df::unit *unit, activity_type type)
     work_history[unit].pop_front();
 }
 
-static bool is_at_leisure(df::unit *unit)
-{
+static bool is_at_leisure(df::unit *unit) {
     if (Units::getMiscTrait(unit, misc_trait_type::Migrant))
         return true;
 
@@ -1805,32 +1700,17 @@ static bool is_at_leisure(df::unit *unit)
     return false;
 }
 
-static void reset()
-{
+static void reset() {
     work_history.clear();
-
-    for (int i = 0; i < 7; i++)
-        misery[i] = 0;
-
-    misery_upto_date = false;
 }
 
 static void update_dwarf_stats(bool is_paused)
 {
-    if (monitor_misery)
-    {
-        for (int i = 0; i < 7; i++)
-            misery[i] = 0;
-    }
-
-    for (auto iter = world->units.active.begin(); iter != world->units.active.end(); iter++)
-    {
-        df::unit* unit = *iter;
+    for (auto unit : world->units.active) {
         if (!Units::isCitizen(unit))
             continue;
 
-        if (!DFHack::Units::isActive(unit))
-        {
+        if (!DFHack::Units::isActive(unit)) {
             auto it = work_history.find(unit);
             if (it != work_history.end())
                 work_history.erase(it);
@@ -1838,35 +1718,25 @@ static void update_dwarf_stats(bool is_paused)
             continue;
         }
 
-        if (monitor_misery)
-        {
-            misery[get_happiness_cat(unit)]++;
-        }
-
-        if (!monitor_jobs || is_paused)
+        if (is_paused)
             continue;
 
         if (Units::isBaby(unit) ||
-            Units::isChild(unit) ||
-            unit->profession == profession::DRUNK)
-        {
+                Units::isChild(unit) ||
+                unit->profession == profession::DRUNK)
             continue;
-        }
 
-        if (ENUM_ATTR(profession, military, unit->profession))
-        {
+        if (ENUM_ATTR(profession, military, unit->profession)) {
             add_work_history(unit, JOB_MILITARY);
             continue;
         }
 
-        if (!unit->job.current_job)
-        {
+        if (!unit->job.current_job) {
             add_work_history(unit, JOB_IDLE);
             continue;
         }
 
-        if (is_at_leisure(unit))
-        {
+        if (is_at_leisure(unit)) {
             add_work_history(unit, JOB_LEISURE);
             continue;
         }
@@ -1876,107 +1746,21 @@ static void update_dwarf_stats(bool is_paused)
 }
 
 
-DFhackCExport command_result plugin_onupdate (color_ostream &out)
-{
-    if (!monitor_jobs && !monitor_misery)
-        return CR_OK;
-
-    if(!Maps::IsValid())
+DFhackCExport command_result plugin_onupdate (color_ostream &out) {
+    if (!is_enabled | !Maps::IsValid())
         return CR_OK;
 
     bool is_paused = DFHack::World::ReadPauseState();
-    if (is_paused)
-    {
-        if (monitor_misery && !misery_upto_date)
-            misery_upto_date = true;
-        else
-            return CR_OK;
-    }
-    else
-    {
-        if (world->frame_counter % DELTA_TICKS != 0)
-            return CR_OK;
-    }
+    if (!is_paused && world->frame_counter % DELTA_TICKS != 0)
+        return CR_OK;
 
     update_dwarf_stats(is_paused);
 
     return CR_OK;
 }
 
-struct dwarf_monitor_hook : public df::viewscreen_dwarfmodest
-{
-    typedef df::viewscreen_dwarfmodest interpose_base;
-
-    DEFINE_VMETHOD_INTERPOSE(void, render, ())
-    {
-        INTERPOSE_NEXT(render)();
-
-        CoreSuspendClaimer suspend;
-        if (Maps::IsValid())
-        {
-            dm_lua::call("render_all");
-        }
-    }
-};
-
-IMPLEMENT_VMETHOD_INTERPOSE(dwarf_monitor_hook, render);
-
-static bool set_monitoring_mode(const string &mode, const bool &state)
-{
-    bool mode_recognized = false;
-
-    if (!is_enabled)
-        return false;
-    /*
-        NOTE: although we are not touching DF directly but there might be
-        code running that uses these values. So this could use another mutex
-        or just suspend the core while we edit our values.
-    */
-    CoreSuspender guard;
-
-    if (mode == "work" || mode == "all")
-    {
-        mode_recognized = true;
-        monitor_jobs = state;
-        if (!monitor_jobs)
-            reset();
-    }
-    if (mode == "misery" || mode == "all")
-    {
-        mode_recognized = true;
-        monitor_misery = state;
-    }
-    if (mode == "date" || mode == "all")
-    {
-        mode_recognized = true;
-        monitor_date = state;
-    }
-    if (mode == "weather" || mode == "all")
-    {
-        mode_recognized = true;
-        monitor_weather = state;
-    }
-
-    return mode_recognized;
-}
-
-static bool load_config()
-{
-    return dm_lua::call("load_config");
-}
-
-DFhackCExport command_result plugin_enable(color_ostream &out, bool enable)
-{
-    if (enable)
-    {
-        CoreSuspender guard;
-        load_config();
-    }
-    if (is_enabled != enable)
-    {
-        if (!INTERPOSE_HOOK(dwarf_monitor_hook, render).apply(enable))
-            return CR_FAILURE;
-
+DFhackCExport command_result plugin_enable(color_ostream &, bool enable) {
+    if (is_enabled != enable) {
         reset();
         is_enabled = enable;
     }
@@ -1984,76 +1768,28 @@ DFhackCExport command_result plugin_enable(color_ostream &out, bool enable)
     return CR_OK;
 }
 
-static command_result dwarfmonitor_cmd(color_ostream &out, vector <string> & parameters)
-{
-    bool show_help = false;
+static command_result dwarfmonitor_cmd(color_ostream &, vector <string> & parameters) {
     if (parameters.empty())
-    {
-        show_help = true;
-    }
-    else
-    {
-        auto cmd = parameters[0][0];
-        string mode;
-
-        if (parameters.size() > 1)
-            mode = toLower(parameters[1]);
-
-        if (cmd == 'v' || cmd == 'V')
-        {
-            out << "DwarfMonitor" << endl << "Version: " << PLUGIN_VERSION << endl;
-        }
-        else if ((cmd == 'e' || cmd == 'E') && !mode.empty())
-        {
-            if (!is_enabled)
-                plugin_enable(out, true);
+        return CR_WRONG_USAGE;
 
-            if (set_monitoring_mode(mode, true))
-            {
-                out << "Monitoring enabled: " << mode << endl;
-            }
-            else
-            {
-                show_help = true;
-            }
-        }
-        else if ((cmd == 'd' || cmd == 'D') && !mode.empty())
-        {
-            if (set_monitoring_mode(mode, false))
-                out << "Monitoring disabled: " << mode << endl;
-            else
-                show_help = true;
-        }
-        else if (cmd == 's' || cmd == 'S')
-        {
-            CoreSuspender guard;
-            if(Maps::IsValid())
-                Screen::show(dts::make_unique<ViewscreenFortStats>(), plugin_self);
-        }
-        else if (cmd == 'p' || cmd == 'P')
-        {
-            CoreSuspender guard;
-            if(Maps::IsValid())
-                Screen::show(dts::make_unique<ViewscreenPreferences>(), plugin_self);
-        }
-        else if (cmd == 'r' || cmd == 'R')
-        {
-            CoreSuspender guard;
-            load_config();
-        }
-        else
-        {
-            show_help = true;
-        }
+    auto cmd = parameters[0][0];
+    if (cmd == 's' || cmd == 'S') {
+        CoreSuspender guard;
+        if(Maps::IsValid())
+            Screen::show(dts::make_unique<ViewscreenFortStats>(), plugin_self);
     }
-
-    if (show_help)
+    else if (cmd == 'p' || cmd == 'P') {
+        CoreSuspender guard;
+        if(Maps::IsValid())
+            Screen::show(dts::make_unique<ViewscreenPreferences>(), plugin_self);
+    }
+    else
         return CR_WRONG_USAGE;
 
     return CR_OK;
 }
 
-DFhackCExport command_result plugin_init(color_ostream &out, std::vector <PluginCommand> &commands)
+DFhackCExport command_result plugin_init(color_ostream &, std::vector <PluginCommand> &commands)
 {
     activity_labels[JOB_IDLE]               = "Idle";
     activity_labels[JOB_MILITARY]           = "Military Duty";
@@ -2079,27 +1815,13 @@ DFhackCExport command_result plugin_init(color_ostream &out, std::vector <Plugin
             "Measure fort happiness and efficiency.",
             dwarfmonitor_cmd));
 
-    dm_lua::state=Lua::Core::State;
-    if (dm_lua::state == NULL)
-        return CR_FAILURE;
-
-    return CR_OK;
-}
-
-DFhackCExport command_result plugin_shutdown(color_ostream &out)
-{
-    dm_lua::cleanup();
     return CR_OK;
 }
 
-DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_change_event event)
+DFhackCExport command_result plugin_onstatechange(color_ostream &, state_change_event event)
 {
-    switch (event) {
-    case SC_MAP_LOADED:
+    if (event == SC_MAP_LOADED)
         reset();
-        break;
-    default:
-        break;
-    }
+
     return CR_OK;
 }

plugins/lua/dwarfmonitor.lua

@@ -1,175 +1,160 @@
 local _ENV = mkmodule('plugins.dwarfmonitor')
 
-local gps = df.global.gps
-local gui = require 'gui'
+local json = require('json')
+local guidm = require('gui.dwarfmode')
+local overlay = require('plugins.overlay')
 
-config = {}
-widgets = {}
+local DWARFMONITOR_CONFIG_FILE = 'dfhack-config/dwarfmonitor.json'
 
-function dmerror(desc)
-    qerror('dwarfmonitor: ' .. tostring(desc))
-end
-
-Widget = defclass(Widget)
-function Widget:init(opts)
-    self.opts = opts
-end
-function Widget:get_pos()
-    local x = self.opts.x >= 0 and self.opts.x or gps.dimx + self.opts.x
-    local y = self.opts.y >= 0 and self.opts.y or gps.dimy + self.opts.y
-    if self.opts.anchor == 'right' then
-        x = x - (self:get_width() or 0) + 1
-    end
-    return x, y
-end
-function Widget:render()
-    if monitor_state(self.opts.type) == false then
-        return
-    end
-    self:update()
-    local x, y = self:get_pos()
-    local p = gui.Painter.new_xy(x, y, gps.dimx - 1, y)
-    self:render_body(p)
-end
-function Widget:update() end
-function Widget:get_width() end
-function Widget:render_body() end
+-- --------------
+-- Widget_weather
+-- --------------
 
-Widget_weather = defclass(Widget_weather, Widget)
+Widget_weather = defclass(Widget_weather, overlay.OverlayWidget)
 
-function Widget_weather:update()
-    self.counts = get_weather_counts()
+function Widget_weather:init()
+    self.rain = false
+    self.snow = false
 end
 
-function Widget_weather:get_width()
-    if self.counts.rain > 0 then
-        if self.counts.snow > 0 then
-            return 9
+function Widget_weather:overlay_onupdate()
+    local rain, snow = false, false
+    local cw = df.global.current_weather
+    for i=0,4 do
+        for j=0,4 do
+            weather = cw[i][j]
+            if weather == df.weather_type.Rain then self.rain = true end
+            if weather == df.weather_type.Snow then self.snow = true end
         end
-        return 4
-    elseif self.counts.snow > 0 then
-        return 4
     end
-    return 0
+    self.frame.w = (rain and 4 or 0) + (snow and 4 or 0) +
+            ((snow and rain) and 1 or 0)
+    self.rain, self.snow = rain, snow
 end
 
-function Widget_weather:render_body(p)
-    if self.counts.rain > 0 then
-        p:string('Rain', COLOR_LIGHTBLUE):advance(1)
-    end
-    if self.counts.snow > 0 then
-        p:string('Snow', COLOR_WHITE)
-    end
+function Widget_weather:onRenderBody(dc)
+    if self.rain then dc:string('Rain', COLOR_LIGHTBLUE):advance(1) end
+    if self.snow then dc:string('Snow', COLOR_WHITE) end
 end
 
-Widget_date = defclass(Widget_date, Widget)
-Widget_date.ATTRS = {
-    output = ''
-}
+-- -----------
+-- Widget_date
+-- -----------
 
-function Widget_date:update()
-    if not self.opts.format then
-        self.opts.format = 'Y-M-D'
+local function get_date_format()
+    local ok, config = pcall(json.decode_file, DWARFMONITOR_CONFIG_FILE)
+    if not ok or not config.date_format then
+        return 'Y-M-D'
     end
+    return config.date_format
+end
+
+Widget_date = defclass(Widget_date, overlay.OverlayWidget)
+
+function Widget_date:init()
+    self.datestr = ''
+    self.fmt = get_date_format()
+end
+
+function Widget_date:overlay_onupdate()
     local year = dfhack.world.ReadCurrentYear()
     local month = dfhack.world.ReadCurrentMonth() + 1
     local day = dfhack.world.ReadCurrentDay()
-    self.output = 'Date:'
-    for i = 1, #self.opts.format do
-        local c = self.opts.format:sub(i, i)
+
+    local fmt = self.fmt
+    local datestr = 'Date:'
+    for i=1,#fmt do
+        local c = fmt:sub(i, i)
         if c == 'y' or c == 'Y' then
-            self.output = self.output .. year
+            datestr = datestr .. year
         elseif c == 'm' or c == 'M' then
             if c == 'M' and month < 10 then
-                self.output = self.output .. '0'
+                datestr = datestr .. '0'
             end
-            self.output = self.output .. month
+            datestr = datestr .. month
         elseif c == 'd' or c == 'D' then
             if c == 'D' and day < 10 then
-                self.output = self.output .. '0'
+                datestr = datestr .. '0'
             end
-            self.output = self.output .. day
+            datestr = datestr .. day
         else
-            self.output = self.output .. c
+            datestr = datestr .. c
         end
     end
-end
 
-function Widget_date:get_width()
-    return #self.output
+    self.frame.w = #datestr
+    self.datestr = datestr
 end
 
-function Widget_date:render_body(p)
-    p:string(self.output, COLOR_GREY)
+function Widget_date:onRenderBody(dc)
+    dc:string(self.datestr, COLOR_GREY)
 end
 
-Widget_misery = defclass(Widget_misery, Widget)
+-- -------------
+-- Widget_misery
+-- -------------
+
+Widget_misery = defclass(Widget_misery, overlay.OverlayWidget)
 
-function Widget_misery:update()
-    self.data = get_misery_data()
+function Widget_misery:init()
+    self.colors = getStressCategoryColors()
+    self.stress_category_counts = {}
 end
 
-function Widget_misery:get_width()
-    local w = 2 + 6
-    for k, v in pairs(self.data) do
-        w = w + #tostring(v.value)
+function Widget_misery:overlay_onupdate()
+    local counts, num_colors = {}, #self.colors
+    for _,unit in ipairs(df.global.world.units.active) do
+        local stress_category = math.min(num_colors,
+                                         dfhack.units.getStressCategory(unit))
+        counts[stress_category] = (counts[stress_category] or 0) + 1
     end
-    return w
-end
 
-function Widget_misery:render_body(p)
-    p:string("H:", COLOR_WHITE)
-    for i = 0, 6 do
-        local v = self.data[i]
-        p:string(tostring(v.value), v.color)
-        if not v.last then
-            p:string("/", COLOR_WHITE)
-        end
+    local width = 2 + num_colors - 1 -- 'H:' plus the slashes
+    for i=1,num_colors do
+        width = width + #tostring(counts[i] or 0)
     end
-end
 
-Widget_cursor = defclass(Widget_cursor, Widget)
+    self.stress_category_counts = counts
+    self.frame.w = width
+end
 
-function Widget_cursor:update()
-    if gps.mouse_x == -1 and not self.opts.show_invalid then
-        self.output = ''
-        return
+function Widget_misery:onRenderBody(dc)
+    dc:string('H:', COLOR_WHITE)
+    local counts = self.stress_category_counts
+    for i,color in ipairs(self.colors) do
+        dc:string(tostring(counts[i] or 0), color)
+        if i < #self.colors then dc:string('/', COLOR_WHITE) end
     end
-    self.output = (self.opts.format or '(x,y)'):gsub('[xX]', gps.mouse_x):gsub('[yY]', gps.mouse_y)
 end
 
-function Widget_cursor:get_width()
-    return #self.output
-end
+-- -------------
+-- Widget_cursor
+-- -------------
 
-function Widget_cursor:render_body(p)
-    p:string(self.output)
-end
+Widget_cursor = defclass(Widget_cursor, overlay.OverlayWidget)
 
-function render_all()
-    for _, w in pairs(widgets) do
-        w:render()
-    end
-end
+function Widget_cursor:onRenderBody(dc)
+    local screenx, screeny = dfhack.screen.getMousePos()
+    local mouse_map = dfhack.gui.getMousePos()
+    local keyboard_map = guidm.getCursorPos()
 
-function load_config()
-    config = require('json').decode_file('dfhack-config/dwarfmonitor.json')
-    if not config.widgets then
-        dmerror('No widgets enabled')
+    local text = {}
+    table.insert(text, ('mouse UI grid (%d,%d)'):format(screenx, screeny))
+    if mouse_map then
+        table.insert(text, ('mouse map coord (%d,%d,%d)')
+                :format(mouse_map.x, mouse_map.y, mouse_map.z))
     end
-    if type(config.widgets) ~= 'table' then
-        dmerror('"widgets" is not a table')
+    if keyboard_map then
+        table.insert(text, ('kbd cursor coord (%d,%d,%d)')
+                :format(keyboard_map.x, keyboard_map.y, keyboard_map.z))
     end
-    widgets = {}
-    for _, opts in pairs(config.widgets) do
-        if type(opts) ~= 'table' then dmerror('"widgets" is not an array') end
-        if not opts.type then dmerror('Widget missing type field') end
-        local cls = _ENV['Widget_' .. opts.type]
-        if not cls then
-            dmerror('Invalid widget type: ' .. opts.type)
-        end
-        table.insert(widgets, cls(opts))
+    local width = 0
+    for i,line in ipairs(text) do
+        dc:seek(0, i-1):string(line)
+        width = math.max(width, #line)
     end
+    self.frame.w = width
+    self.frame.h = #text
 end
 
 return _ENV