(Feat): Add Color Swatches

src/ColorSwatch.cpp

@@ -0,0 +1,59 @@
+//
+// Created by illyum on 8/16/2024.
+//
+
+#include "ColorSwatch.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "cJSON.h"
+
+
+int SaveSwatch(const char *filename, const SavedSwatch *swatch) {
+    FILE *file = fopen(filename, "wb");
+    if (file == NULL) {
+        return 0;
+    }
+
+    fwrite(&swatch->count, sizeof(size_t), 1, file);
+    fwrite(swatch->colors, sizeof(SwatchColor), swatch->count, file);
+
+    fclose(file);
+    return 1;
+}
+
+int LoadSwatch(const char *filename, SavedSwatch *swatch) {
+    FILE *file = fopen(filename, "rb");
+    if (file == NULL) {
+        return 0;
+    }
+
+    fread(&swatch->count, sizeof(size_t), 1, file);
+
+    swatch->colors = (SwatchColor *)malloc(swatch->count * sizeof(SwatchColor));
+    if (swatch->colors == NULL) {
+        fclose(file);
+        return 0;
+    }
+
+    fread(swatch->colors, sizeof(SwatchColor), swatch->count, file);
+    fclose(file);
+    return 1;
+}
+
+void FreeSwatch(SavedSwatch *swatch) {
+    free(swatch->colors);
+    swatch->colors = NULL;
+    swatch->count = 0;
+}
+
+SwatchColor ImVec4ToSwatchColor(const ImVec4& color) {
+    SwatchColor swatchColor;
+    swatchColor.r = static_cast<unsigned char>(color.x * 255.0f);
+    swatchColor.g = static_cast<unsigned char>(color.y * 255.0f);
+    swatchColor.b = static_cast<unsigned char>(color.z * 255.0f);
+    return swatchColor;
+}
+
+ImVec4 SwatchColorToImVec4(const SwatchColor& swatchColor) {
+    return {swatchColor.r / 255.0f, swatchColor.g / 255.0f, swatchColor.b / 255.0f, 1.0f};
+}

src/ColorSwatch.h

@@ -0,0 +1,33 @@
+//
+// Created by illyum on 8/16/2024.
+//
+
+#ifndef COLORSWATCH_H
+#define COLORSWATCH_H
+
+#include <cstdlib>
+#include <string>
+#include <imgui.h>
+
+
+typedef struct {
+    unsigned char r;
+    unsigned char g;
+    unsigned char b;
+} SwatchColor;
+
+typedef struct {
+    std::string swatchName;
+    SwatchColor *colors;
+    size_t count;
+} SavedSwatch;
+
+int SaveSwatch(const char *filename, const SavedSwatch *swatch);
+int LoadSwatch(const char *filename, SavedSwatch *swatch);
+void FreeSwatch(SavedSwatch *swatch);
+
+SwatchColor ImVec4ToSwatchColor(const ImVec4& color);
+
+ImVec4 SwatchColorToImVec4(const SwatchColor& swatchColor);
+
+#endif //COLORSWATCH_H