From 58abb91c64446523662709542cdc8055461e2b4f Mon Sep 17 00:00:00 2001
From: nedko <nedko@internedko.net>
Date: Thu, 4 Dec 2025 15:32:42 +0200
Subject: [PATCH] Updated README. Added example config. Added default font for
 ease of use.

---
 README.md           |  7 ++++---
 config_example.json | 14 ++++++++++++++
 main.cpp            |  1 +
 sdl_helpers.cpp     |  2 +-
 sdl_helpers.h       |  4 +++-
 5 files changed, 23 insertions(+), 5 deletions(-)
 create mode 100644 config_example.json

diff --git a/README.md b/README.md
index 3579363..3968d69 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,10 @@ A utility which can be used to create custom images for TRMNL devices via code
 
 # How to write new visual stuff
 1. Inherit from `Widget` and then do your magic inside your own class.
-2. Instantiate your widget in `main.cpp` and add it to the vector of widgets.
-3. ???
-4. Profit
+2. Add your widget builder in `main.cpp` inside `init builders`.
+3. Write your config file.
+4. ???
+5. Profit
 
 # ImageMagick commands
 ### Convert image without dithering
diff --git a/config_example.json b/config_example.json
new file mode 100644
index 0000000..5a27adf
--- /dev/null
+++ b/config_example.json
@@ -0,0 +1,14 @@
+{
+	"width": 800,
+	"height": 600,
+	"output": "trmnl.png",
+	"font": "font.ttf",
+	"widgets":
+	[
+		{
+			"name": "widget_name",
+			"parameter1": "example",
+			"parameter2": 10
+		}
+	]
+}
diff --git a/main.cpp b/main.cpp
index 7a45aa8..66fee5d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -63,6 +63,7 @@ int main(int argc, char **argv)
 	// Change screen size from JSON
 	json_extract(cfg, "width", screen_width);
 	json_extract(cfg, "height", screen_height);
+	json_extract(cfg, "font", default_font_name);
 
 	// Create surface
 	main_surface = SDL_CreateRGBSurfaceWithFormat(0, screen_width, screen_height, 32, SDL_PIXELFORMAT_RGBA8888);
diff --git a/sdl_helpers.cpp b/sdl_helpers.cpp
index bfe4399..a739fc1 100644
--- a/sdl_helpers.cpp
+++ b/sdl_helpers.cpp
@@ -53,7 +53,7 @@ void clean_sdl()
 	SDL_Quit();
 }
 
-TTF_Font* get_font(const string& filename, int size)
+TTF_Font* get_font(int size, const string& filename)
 {
 	pair<string, int> key(filename, size);
 	if (0 != font_map.count(key))
diff --git a/sdl_helpers.h b/sdl_helpers.h
index a028e63..ac00c63 100644
--- a/sdl_helpers.h
+++ b/sdl_helpers.h
@@ -8,6 +8,8 @@
 
 #include "json.hpp"
 
+std::string default_font_name = "font.ttf";
+
 // Call this before everything
 // Prints its messages
 bool init_sdl();
@@ -17,7 +19,7 @@ void clean_sdl();
 
 // A simple way to get a font pointer to use
 // Can return NULL
-TTF_Font* get_font(const std::string& filename, int size);
+TTF_Font* get_font(int size, const std::string& filename = default_font_name);
 
 // Reads the file and tries to parse a JSON file with comments
 // cfg - output json struct