feat: added external resource management

elements.cpp

@@ -20,7 +20,7 @@ void TextButton(Clay_String text, Clay_Color color, OnHoveredFn onHovered, intpt
 		},
 	}) {
 		Clay_OnHover(onHovered, onHoveredData);
-		cera::Body(text, {
+		Body(text, {
 			.textColor = theme->textColor,
 			.textAlignment = CLAY_TEXT_ALIGN_CENTER,
 		});
@@ -35,7 +35,8 @@ void ToggleHovered(Clay_ElementId element, Clay_PointerData pointer, intptr_t da
 }
 
 
-void Toggle(Clay_String label, Clay_Color selected, bool &state) {
+bool Toggle(Clay_String label, Clay_Color selected, bool &state) {
+	bool const before{state};
 	CLAY_AUTO_ID({
 		.layout = {
 			.sizing = { CLAY_SIZING_GROW(), CLAY_SIZING_GROW() },
@@ -68,10 +69,12 @@ void Toggle(Clay_String label, Clay_Color selected, bool &state) {
 			.textColor = theme->textColor
 		});
 	}
+	// return if the value changed this frame
+	return before != state;
 }
 
 void Body(Clay_String string, Clay_TextElementConfig baseCfg) {
-	baseCfg.fontId = cera::FONT_DEFAULT;
+	baseCfg.fontId = cera::FONT_REGULAR;
 	baseCfg.fontSize = cera::baseFontSize;
 	CLAY_TEXT(string, CLAY_TEXT_CONFIG(baseCfg));
 }

elements.h

@@ -1,13 +1,14 @@
 #ifndef ELEMENTS_H
 #define ELEMENTS_H
 
-#include <clay/clay.h>
 #include "style.h"
+#include <SDL3/SDL_render.h>
+#include <clay/clay.h>
 
 namespace cera {
 typedef void(*OnHoveredFn)(Clay_ElementId element, Clay_PointerData pointer, intptr_t data);
 void TextButton(Clay_String text, Clay_Color color, OnHoveredFn onHovered, intptr_t onHoveredData = 0);
-void Toggle(Clay_String label, Clay_Color selected, bool &state);
+bool Toggle(Clay_String label, Clay_Color selected, bool &state);
 void Body(Clay_String string, Clay_TextElementConfig baseCfg = {.textColor = theme->textColor});
 void Header(Clay_String string, size_t header, Clay_TextElementConfig baseCfg = {.textColor = theme->textColor});
 }

resources.cpp

@@ -4,18 +4,34 @@
 #include <SDL3/SDL_log.h>
 #include <SDL3/SDL_render.h>
 #include <SDL3_image/SDL_image.h>
+#include <cstddef>
+
+#ifndef CERA_RESOURCE_REGISTRY_SIZE
+#define CERA_RESOURCE_REGISTRY_SIZE 64
+#endif
 
 namespace cera {
+struct ResourceRegistry {
+	void *data;
+	DestructorFn destructor;
+};
+
 TTF_Font *defaultFont[FONT_MAX];
 TTF_TextEngine *textEngine = nullptr;
 
+ResourceRegistry resources[CERA_RESOURCE_REGISTRY_SIZE]{};
+size_t usedResources{0};
+
 void SetDefaultFont(char const *path) {
-	defaultFont[FONT_DEFAULT] = TTF_OpenFont(path, cera::baseFontSize * 5);
+	// LOAD REGULAR FONT
-	if (defaultFont[FONT_DEFAULT] == nullptr) {
+	defaultFont[FONT_REGULAR] = TTF_OpenFont(path, cera::baseFontSize * 5);
+	if (defaultFont[FONT_REGULAR] == nullptr) {
 		SDL_LogError(SDL_LOG_CATEGORY_ERROR, "TTF_OpenFont failed: Failed to load default font '%s': %s", path, SDL_GetError());
 		exit(6);
 	}
-	TTF_SetFontHinting(defaultFont[FONT_DEFAULT], TTF_HINTING_LIGHT_SUBPIXEL);
+	TTF_SetFontHinting(defaultFont[FONT_REGULAR], TTF_HINTING_LIGHT_SUBPIXEL);
+	StoreResource(defaultFont[FONT_REGULAR], (DestructorFn)&TTF_CloseFont);
+	// LOAD BOLD FONT
 	defaultFont[FONT_BOLD] = TTF_OpenFont(path, cera::baseFontSize * 5);
 	if (defaultFont[FONT_BOLD] == nullptr) {
 		SDL_LogError(SDL_LOG_CATEGORY_ERROR, "TTF_OpenFont failed: Failed to load default bold font '%s': %s", path, SDL_GetError());
@@ -23,6 +39,33 @@ void SetDefaultFont(char const *path) {
 	}
 	TTF_SetFontHinting(defaultFont[FONT_BOLD], TTF_HINTING_LIGHT_SUBPIXEL);
 	TTF_SetFontStyle(defaultFont[FONT_BOLD], TTF_STYLE_BOLD);
+	StoreResource(defaultFont[FONT_BOLD], (DestructorFn)&TTF_CloseFont);
 	SDL_Log("SetDefaultFont: Success");
 }
+
+void StoreResource(void *data, DestructorFn destructor) {
+	for (size_t i{0}; i < usedResources; ++i) {
+		if(resources[i].data == nullptr) {
+			resources[i].data = data;
+			resources[i].destructor = destructor;
+			return;
+		}
+	}
+	if(usedResources < CERA_RESOURCE_REGISTRY_SIZE) {
+		resources[usedResources].data = data;
+		resources[usedResources].destructor = destructor;
+		++usedResources;
+		return;
+	}
+	SDL_LogError(SDL_LOG_CATEGORY_ERROR, "Failed to register resource, expect memory leaks. Consider using less resources or defining a higher CERA_RESOURCE_REGISTRY_SIZE at compile time");
+}
+
+void CleanupResources() {
+	for (size_t i{0}; i < usedResources; ++i) {
+		if(resources[i].data) {
+			resources[i].destructor(resources[i].data);
+		}
+	}
+	usedResources = 0;
+}
 }

resources.h

@@ -1,11 +1,13 @@
 #ifndef RESOURCES_H
 #define RESOURCES_H
 
+#include "SDL3/SDL_render.h"
+#include <SDL3_image/SDL_image.h>
 #include <SDL3_ttf/SDL_ttf.h>
 
 namespace cera {
 enum Font {
-	FONT_DEFAULT = 0,
+	FONT_REGULAR = 0,
 	FONT_BOLD = 1,
 	FONT_MAX
 };
@@ -13,7 +15,19 @@ enum Font {
 extern TTF_TextEngine *textEngine;
 extern TTF_Font *defaultFont[FONT_MAX];
 
+typedef void (*DestructorFn)(void* data);
+
 void SetDefaultFont(char const *path);
+void StoreResource(void *data, DestructorFn destructor);
+void CleanupResources();
+
+static inline SDL_Texture *LoadAndStoreTexture(SDL_Renderer *renderer, char const *path) {
+	if(SDL_Texture *texture{IMG_LoadTexture(renderer, path)}) {
+		StoreResource(texture, (DestructorFn)&SDL_DestroyTexture);
+		return texture;
+	}
+	return nullptr;
+}
 }
 
 #endif // !RESOURCES_H