From 015ec2c02915c23cb469b15002ca58f8a8edf078 Mon Sep 17 00:00:00 2001
From: Giuseppe Penone <giuspen@gmail.com>
Date: Fri, 12 Jan 2024 00:20:51 +0000
Subject: [PATCH] added up to 18 custom user colours in the colour picker
 palette (#2422)

---
 src/ct/ct_config.cc           |  8 ++++++++
 src/ct/ct_config.h            |  1 +
 src/ct/ct_dialogs_gen_purp.cc | 30 ++++++++++++++++++++++++++----
 src/ct/ct_types.h             | 25 ++++++++++++++++++++++++-
 4 files changed, 59 insertions(+), 5 deletions(-)

diff --git a/src/ct/ct_config.cc b/src/ct/ct_config.cc
index c3e324ff8..16e6e5154 100644
--- a/src/ct/ct_config.cc
+++ b/src/ct/ct_config.cc
@@ -231,6 +231,7 @@ void CtConfig::_populate_keyfile_from_data()
     if (not currColour_fg.empty()) _uKeyFile->set_string(_currentGroup, "fg", currColour_fg);
     if (not currColour_bg.empty()) _uKeyFile->set_string(_currentGroup, "bg", currColour_bg);
     if (not currColour_nn.empty()) _uKeyFile->set_string(_currentGroup, "nn", currColour_nn);
+    if (not coloursUserPalette.empty()) _uKeyFile->set_string(_currentGroup, "colours_user", coloursUserPalette.serialise_to_colon_sep());
 
     // [tree]
     _currentGroup = "tree";
@@ -492,6 +493,13 @@ void CtConfig::_populate_data_from_keyfile()
     _populate_string_from_keyfile("fg", &currColour_fg);
     _populate_string_from_keyfile("bg", &currColour_bg);
     _populate_string_from_keyfile("nn", &currColour_nn);
+    std::string colours_user;
+    _populate_string_from_keyfile("colours_user", &colours_user);
+    for (const auto& colour : str::split(colours_user, ":")) {
+        if (not colour.empty()) {
+            coloursUserPalette.push_back(Gdk::RGBA{colour});
+        }
+    }
 
     // [tree]
     _currentGroup = "tree";
diff --git a/src/ct/ct_config.h b/src/ct/ct_config.h
index ed5684dce..8830db430 100644
--- a/src/ct/ct_config.h
+++ b/src/ct/ct_config.h
@@ -86,6 +86,7 @@ class CtConfig
     Glib::ustring                               currColour_fg;
     Glib::ustring                               currColour_bg;
     Glib::ustring                               currColour_nn;
+    CtColoursUserPalette                        coloursUserPalette;
 
     // [tree]
     CtRestoreExpColl                            restoreExpColl{CtRestoreExpColl::FROM_STR};
diff --git a/src/ct/ct_dialogs_gen_purp.cc b/src/ct/ct_dialogs_gen_purp.cc
index 3f74e0fd0..bedfbebb8 100644
--- a/src/ct/ct_dialogs_gen_purp.cc
+++ b/src/ct/ct_dialogs_gen_purp.cc
@@ -236,9 +236,27 @@ CtDialogs::CtPickDlgState CtDialogs::colour_pick_dialog(CtMainWin* pCtMainWin,
         "#ffffff", "#f6f5f4", "#deddda", "#c0bfbc", "#9a9996", /* Light */
         "#77767b", "#5e5c64", "#3d3846", "#241f31", "#000000"};/* Dark */
     std::vector<Gdk::RGBA> default_colours;
-    for (int i=0; i<45; ++i) { default_colours.push_back(Gdk::RGBA{default_colors[i]}); }
-    dialog.add_palette(Gtk::Orientation::ORIENTATION_VERTICAL, 5, default_colours);
-    dialog.set_rgba(Gdk::RGBA(ret_colour));
+    std::vector<Gdk::RGBA> palette_colours;
+    auto& coloursUserPalette = pCtMainWin->get_ct_config()->coloursUserPalette;
+    size_t column_idx{0u};
+    for (int i = 0; i < 45; ++i) {
+        const Gdk::RGBA curr_colour{default_colors[i]};
+        default_colours.push_back(curr_colour);
+        palette_colours.push_back(curr_colour);
+        if (coloursUserPalette.size() > 0u) {
+            if (4 == i % 5) {
+                if (coloursUserPalette.size() > column_idx) palette_colours.push_back(*coloursUserPalette.at(column_idx));
+                else palette_colours.push_back(Gdk::RGBA{});
+                if (coloursUserPalette.size() > 9u) {
+                    if (coloursUserPalette.size() > (9+column_idx)) palette_colours.push_back(*coloursUserPalette.at(9+column_idx));
+                    else palette_colours.push_back(Gdk::RGBA{});
+                }
+                ++column_idx;
+            }
+        }
+    }
+    dialog.add_palette(Gtk::Orientation::ORIENTATION_VERTICAL, 5 + (coloursUserPalette.size() + 8)/9, palette_colours);
+    dialog.set_rgba(Gdk::RGBA{ret_colour});
 
     auto on_key_press_dialog = [&](GdkEventKey* pEventKey)->bool{
         if (GDK_KEY_Return == pEventKey->keyval or GDK_KEY_KP_Enter == pEventKey->keyval) {
@@ -259,7 +277,11 @@ CtDialogs::CtPickDlgState CtDialogs::colour_pick_dialog(CtMainWin* pCtMainWin,
     if (Gtk::RESPONSE_OK != response) {
         return CtPickDlgState::CANCEL;
     }
-    ret_colour = dialog.get_rgba().to_string();
+    const Gdk::RGBA sel_colour = dialog.get_rgba();
+    ret_colour = sel_colour.to_string();
+    if (not vec::exists(default_colours, sel_colour)) {
+        coloursUserPalette.move_or_push_front(sel_colour);
+    }
     return CtPickDlgState::SELECTED;
 }
 
diff --git a/src/ct/ct_types.h b/src/ct/ct_types.h
index d03373654..9015f83bb 100644
--- a/src/ct/ct_types.h
+++ b/src/ct/ct_types.h
@@ -1,7 +1,7 @@
 /*
  * ct_types.h
  *
- * Copyright 2009-2023
+ * Copyright 2009-2024
  * Giuseppe Penone <giuspen@gmail.com>
  * Evgenii Gurianov <https://github.com/txe>
  *
@@ -206,6 +206,29 @@ struct CtRecentDocsFilepaths : public CtMaxSizedList<fs::path>
     CtRecentDocsFilepaths() : CtMaxSizedList<fs::path>{10} {}
 };
 
+struct CtColoursUserPalette : public CtMaxSizedList<Gdk::RGBA>
+{
+    CtColoursUserPalette() : CtMaxSizedList<Gdk::RGBA>{18} {}
+    std::string serialise_to_colon_sep() const {
+        std::string outString;
+        bool firstIteration{true};
+        for (const Gdk::RGBA& element : *this) {
+            if (not firstIteration) outString += ":";
+            else firstIteration = false;
+            outString += element.to_string();
+        }
+        return outString;
+    }
+    Gdk::RGBA* at(const int i) {
+        int idx{0};
+        for (Gdk::RGBA& element : *this) {
+            if (i == idx) return &element;
+            ++idx;
+        }
+        return nullptr;
+    }
+};
+
 class CtStringSplittable
 {
 private: