first commit and work ver

CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.26)
+project(colorconvert)
+
+set(CMAKE_CXX_STANDARD 17)
+
+find_package(PkgConfig REQUIRED)
+
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+include_directories(${GTK_INCLUDE_DIRS})
+
+link_libraries(${GTK_LIBRARIES})
+
+add_executable(colorconvert main.cpp)

main.cpp

@@ -0,0 +1,114 @@
+#include <gtk/gtk.h>
+
+// HEX opacity table
+const gchar* alpha_to_hex(gdouble alpha) {
+    guint alpha_hex = (guint)(alpha * 127 + 0.5);
+    static const gchar* alpha_hex_table[] = {
+        "00", "02", "04", "07", "09", "0B", "0E", "10", "12", "15", "17", "1A", "1C", "1E", "21", "23",
+        "25", "28", "2A", "2D", "2F", "31", "34", "36", "39", "3B", "3E", "40", "42", "45", "47", "4A",
+        "4C", "4E", "51", "53", "56", "58", "5A", "5D", "5F", "62", "64", "67", "69", "6C", "6E", "71",
+        "73", "75", "78", "7A", "7D", "7F", "82", "84", "87", "89", "8B", "8E", "90", "93", "95", "98",
+        "9A", "9C", "9F", "A1", "A4", "A6", "A9", "AB", "AE", "B0", "B3", "B5", "B7", "BA", "BC", "BF",
+        "C1", "C4", "C6", "C9", "CB", "CE", "D0", "D3", "D5", "D8", "DA", "DD", "DF", "E2", "E4", "E6",
+        "E9", "EB", "EE", "F0", "F3", "F5", "F8", "FA", "FD", "FF"
+    };
+
+    if (alpha_hex >= 0 && alpha_hex < 128) {
+        return alpha_hex_table[alpha_hex];
+    } else {
+        return NULL;
+    }
+}
+
+// Color channel to HEX
+const gchar* channel_to_hex(gdouble channel) {
+    guint channel_hex = (guint)(channel * 255);
+    gchar *hex_str = g_strdup_printf("%02X", channel_hex);
+    return hex_str;
+}
+
+// RGBA to HEX with opacity
+const gchar* color_to_hex(const GdkRGBA *color) {
+    gchar *hex_str;
+    const gchar* alpha_hex = alpha_to_hex(color->alpha);
+
+    if (alpha_hex != NULL) {
+        // Color to HEX with opacity
+        hex_str = g_strdup_printf("0x%s%s%s%s", alpha_hex, channel_to_hex(color->red), channel_to_hex(color->green), channel_to_hex(color->blue));
+    } else {
+        // If transparency is outside the acceptable range, set it to 100%
+        alpha_hex = "FF";
+        hex_str = g_strdup_printf("0x%s%s%s%s", alpha_hex, channel_to_hex(color->red), channel_to_hex(color->green), channel_to_hex(color->blue));
+    }
+    return hex_str;
+}
+
+void color_dialog(GtkWidget *button, gpointer user_data) {
+    GtkWidget *dialog;
+    gint result;
+    GdkRGBA color;
+    GtkWidget *color_field = (GtkWidget*)user_data; // User color input
+
+    dialog = gtk_color_chooser_dialog_new("Select Color", NULL);
+    result = gtk_dialog_run(GTK_DIALOG(dialog));
+
+    if (result == GTK_RESPONSE_OK) {
+        gtk_color_chooser_get_rgba(GTK_COLOR_CHOOSER(dialog), &color);
+
+        // Color to HEX with opacity
+        const gchar* hex_color = color_to_hex(&color);
+
+        // Update label "color_field"
+        gtk_label_set_text(GTK_LABEL(color_field), hex_color);
+
+        // Clear RAM
+        g_free((gpointer)hex_color);
+    }
+
+    gtk_widget_destroy(dialog);
+}
+
+static void activate(GtkApplication* app, gpointer user_data) {
+    GtkWidget *window;
+    GtkWidget *box;
+    GtkWidget *button;
+    GtkWidget *color_field;
+
+    // Vertical box
+    box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 5);
+    // Setup window
+    window = gtk_application_window_new(app);
+    gtk_window_set_title(GTK_WINDOW(window), "Color-Converter");
+    gtk_window_set_default_size(GTK_WINDOW(window), 400, 215);
+    gtk_window_set_resizable(GTK_WINDOW(window), FALSE);
+
+    // Label with user color in format: "0x+opacity+hex"
+    color_field = gtk_label_new("Color will be displayed here");
+    gtk_widget_set_size_request(color_field, 400, 100);
+    gtk_label_set_selectable(GTK_LABEL(color_field), TRUE);
+
+    // Color chooser button
+    button = gtk_button_new_with_label("Open Color Chooser");
+    gtk_widget_set_size_request(button, 400, 100);
+    g_signal_connect(button, "clicked", G_CALLBACK(color_dialog), color_field);
+
+    // container setup
+    gtk_box_pack_start(GTK_BOX(box), button, FALSE, FALSE, 0); // Добавляем кнопку в контейнер без расширения и выравнивания
+    gtk_box_pack_start(GTK_BOX(box), color_field, FALSE, FALSE, 0); // Добавляем метку в контейнер без расширения и выравнивания
+    // container add to window
+    gtk_container_add(GTK_CONTAINER(window), box);
+
+    gtk_widget_show_all(window);
+}
+
+int main(int argc, char **argv) {
+    GtkApplication *app;
+    int status;
+
+    app = gtk_application_new("color.converter.app", G_APPLICATION_FLAGS_NONE);
+    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+    status = g_application_run(G_APPLICATION(app), argc, argv);
+    g_object_unref(app);
+
+    return status;
+}