add icons

add visual feedback when changes were made

#9

src/work-calendar.cpp

@@ -9,6 +9,7 @@
 
 #include "inter.h"
 #include "inter-bold.h"
+#include "font-awesome-solid.h"
 
 extern bool should_exit;
 extern bool show_demo_window;
@@ -23,6 +24,7 @@ static int current_day;
 //fonts
 static ImFont *inter_regular;
 static ImFont *inter_bold;
+static ImFont *font_awesome;
 
 char *open_file_dialog();
 char *save_file_dialog();
@@ -89,12 +91,20 @@ const char *get_localized_string(Localized_String localized_string) {
     return localized_strings_storage[L_ENGLISH][localized_string];
 }
 
+static Localized_String month_names[] = { LS_JANUARY, LS_FEBRUARY, LS_MARCH, LS_APRIL, LS_MAY, LS_JUNE, LS_JULY, LS_AUGUST, LS_SEPTEMBER, LS_OCTOBER, LS_NOVEMBER, LS_DECEMBER };
+
+static char *save_file_path = NULL;
+static const char *wiki_url = "https://gitea.ammerhai.com/Ammerhai/work-calendar/wiki";
+
 void init() {
     hydro_init();
     ImGuiIO &io = ImGui::GetIO();
     inter_regular = io.Fonts->AddFontFromMemoryCompressedTTF(inter_compressed_data, inter_compressed_size);
     inter_bold    = io.Fonts->AddFontFromMemoryCompressedTTF(inter_bold_compressed_data, inter_bold_compressed_size);
+    font_awesome  = io.Fonts->AddFontFromMemoryCompressedTTF(font_awesome_solid_compressed_data, font_awesome_solid_compressed_size, 16.0f);
+
     year = get_current_year();
+    save_file_path = (char *)calloc(1, 1);
 
     ImGuiSettingsHandler settings_handler = {};
     settings_handler.TypeName = "Calendar";
@@ -117,11 +127,6 @@ void init() {
     ImGui::AddSettingsHandler(&settings_handler);
 }
 
-static char *save_file_path = NULL;
-static const char *wiki_url = "https://gitea.ammerhai.com/Ammerhai/work-calendar/wiki";
-
-static Localized_String month_names[] = { LS_JANUARY, LS_FEBRUARY, LS_MARCH, LS_APRIL, LS_MAY, LS_JUNE, LS_JULY, LS_AUGUST, LS_SEPTEMBER, LS_OCTOBER, LS_NOVEMBER, LS_DECEMBER };
-
 typedef struct Category {
     bool editing;
     ImColor color;
@@ -156,6 +161,10 @@ static ImVec4 table_hover_color = ImVec4(0.0f, 0.3f, 0.6f, 0.2f);
 static char plaintext_buffer[2 * 1024 * 1024] = {};
 static char encrypted_buffer[hydro_secretbox_HEADERBYTES + sizeof(plaintext_buffer)];
 
+static bool unsaved_changes;
+static bool last_frame_unsaved_changes;
+static char *category_name_before_editing = NULL;
+
 void save(){
     if (!save_file_path) return;
 
@@ -183,7 +192,7 @@ void save(){
 
     if (hydro_secretbox_encrypt((uint8_t *)encrypted_buffer, plaintext_buffer, offset, 0, HYDROGEN_CONTEXT, derived_key) != 0) {
         return; //TODO error message
-    } 
+    }
     hydro_memzero(plaintext_buffer, sizeof(plaintext_buffer));
 
     FILE *save_file = fopen(save_file_path, "wb");
@@ -196,11 +205,12 @@ void save(){
     memcpy(title + strlen("Work Calendar - "), save_file_path, strlen(save_file_path));
 
     set_window_title(title);
-    free(title);      
+    free(title);
+
+    unsaved_changes = false;
 }
 
 void load(){
-
     FILE *save_file = fopen(save_file_path, "rb");
     size_t num_bytes = fread(encrypted_buffer, 1, sizeof(encrypted_buffer), save_file);
     fclose (save_file);
@@ -251,11 +261,26 @@ void load(){
 
     set_window_title(title);
     free(title);
+
+    unsaved_changes = false;
 }
 
 void per_frame(){
     current_language = selected_language;
 
+    if(last_frame_unsaved_changes != unsaved_changes) {
+        char *title = (char *)calloc(1, strlen("Work Calendar - ") + strlen(save_file_path) + 2);
+        memcpy(title, "Work Calendar - ", strlen("Work Calendar - "));
+        memcpy(title + strlen(title), save_file_path, strlen(save_file_path));
+        if(unsaved_changes)
+            memcpy(title + strlen(title), "*", 1);
+
+        set_window_title(title);
+        free(title);
+        
+        last_frame_unsaved_changes = unsaved_changes;
+    }
+
     ImGuiStyle &style = ImGui::GetStyle();
     ImVec2 center = ImGui::GetMainViewport()->GetCenter();
 
@@ -349,6 +374,7 @@ void per_frame(){
         ImGui::EndMainMenuBar();
     }
 
+    // save calendar file with password modal dialogue 
     ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
     if (ImGui::BeginPopupModal(get_localized_string(LS_TITLE_ENTER_PASSWORD), NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
         ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);
@@ -389,6 +415,7 @@ void per_frame(){
         ImGui::EndPopup();
     }
 
+    // open calendar file with password modal dialogue 
     ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
     if (ImGui::BeginPopupModal(get_localized_string(LS_TITLE_OPEN_PASSWORD), NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
         ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);
@@ -421,6 +448,7 @@ void per_frame(){
         ImGui::EndPopup(); 
     }
 
+    // close application modal dialogue
     ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
     if (ImGui::BeginPopupModal(get_localized_string(LS_CLOSE), NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_AlwaysAutoResize)) {
         ImGui::Text("%s", get_localized_string(LS_QUESTION_DO_YOU_REALLY_WANT_TO_QUIT));
@@ -595,6 +623,7 @@ void per_frame(){
 
                         //apply selected color to field
                         if (selected_category != -1 && ImGui::IsItemClicked()) {
+                            unsaved_changes = true;
                             for (int i = 0; i < num_categorized_days; i++) {
                                 if (categorized_days[i].year  != year)  continue;
                                 if (categorized_days[i].month != month) continue;
@@ -673,6 +702,10 @@ void per_frame(){
                 if (category.editing) {
                     ImGui::SetNextItemWidth(-1);
                     if (ImGui::InputText("##name", category.name, IM_ARRAYSIZE(category.name), ImGuiInputTextFlags_EnterReturnsTrue)) {
+                        if (strcmp(category_name_before_editing, category.name) != 0) {
+                            unsaved_changes = true;
+                        }
+                        free(category_name_before_editing);
                         category.editing = false;
                     }
                 } else {
@@ -680,11 +713,23 @@ void per_frame(){
                 }
 
                 ImGui::TableSetColumnIndex(2);
-                if (ImGui::Button("e"))
+                ImGui::PushFont(font_awesome);
+                if (ImGui::Button("\uf304")) {
+                    if(!category.editing) {
+                        category_name_before_editing = _strdup(category.name);
+                    } else { 
+                        if (strcmp(category_name_before_editing, category.name) != 0) {
+                            unsaved_changes = true;
+                        }
+                        free(category_name_before_editing);
+                    }
                     category.editing = !category.editing;
+                }
+                ImGui::PopFont();
 
                 ImGui::TableSetColumnIndex(3);
-                if (ImGui::Button("d")) {
+                ImGui::PushFont(font_awesome);
+                if (ImGui::Button("\uf1f8")) {
                     for (size_t j = 0; j < num_categorized_days; j++) {
                         // Remove categorized days that have the to be deleted category
                         if (categorized_days[j].category == i) {
@@ -698,17 +743,22 @@ void per_frame(){
                     // Remove the category
                     for (size_t j = i; j < num_categories - 1; j++) categories[j] = categories[j + 1];
                     num_categories--;
+                    unsaved_changes = true;
                 }
+                ImGui::PopFont();
 
                 ImGui::PopID();
             }
 
             ImGui::TableNextRow();
             ImGui::TableSetColumnIndex(0);
+            ImGui::PushFont(font_awesome);
             if (ImGui::Button("+")) {
                 categories[num_categories] = {};
                 num_categories++;
+                unsaved_changes = true;
             }
+            ImGui::PopFont();
 
             ImGui::EndTable();
         }