From fe81b27b9cdeedd895a4b7c70875b96d18d9e103 Mon Sep 17 00:00:00 2001
From: kcleal <clealk@cardiff.ac.uk>
Date: Thu, 12 Sep 2024 11:43:08 +0100
Subject: [PATCH] v1.1.0. Added --command option to CLI. Added sorting by POS.
 Fixed backspace-key segfault. Better drawing of mods when zoomed out. Font
 creation debug options. Other small bug fixes

---
 .gw.ini                |  2 +-
 include/defaultIni.hpp |  2 +-
 src/themes.cpp         | 60 +++++++++++++++++++++++++++++++++++++++---
 3 files changed, 58 insertions(+), 6 deletions(-)

diff --git a/.gw.ini b/.gw.ini
index 041a5b1..a69f51e 100644
--- a/.gw.ini
+++ b/.gw.ini
@@ -36,7 +36,7 @@ threads=4
 pad=500
 scroll_speed=0.15
 tabix_track_height=0.3
-font=Menlo
+font=Default
 font_size=14
 sv_arcs=true
 mods=false
diff --git a/include/defaultIni.hpp b/include/defaultIni.hpp
index 43db382..56d049c 100644
--- a/include/defaultIni.hpp
+++ b/include/defaultIni.hpp
@@ -47,7 +47,7 @@ namespace DefaultIni {
                "pad=500\n"
                "scroll_speed=0.15\n"
                "tabix_track_height=0.15\n"
-               "font=Menlo\n"
+               "font=Default\n"
                "font_size=14\n"
                "sv_arcs=true\n"
                "mods=false\n"
diff --git a/src/themes.cpp b/src/themes.cpp
index 91433a2..6c7a519 100644
--- a/src/themes.cpp
+++ b/src/themes.cpp
@@ -8,6 +8,8 @@
 #include "defaultIni.hpp"
 #include "ankerl_unordered_dense.h"
 
+#include "include/core/SkFontMgr.h"
+
 #if !defined(__EMSCRIPTEN__)
     #include <curl/curl.h>
     #include <curl/easy.h>
@@ -987,6 +989,30 @@ namespace Themes {
         file.generate(seshIni, true);
     }
 
+    void printAvailableFonts() {
+        sk_sp<SkFontMgr> fontManager = SkFontMgr::RefDefault();
+        int familyCount = fontManager->countFamilies();
+
+        std::cout << "Available font families:" << std::endl;
+
+        std::vector<std::string> fontFamilies;
+        for (int i = 0; i < familyCount; ++i) {
+            SkString familyName;
+            fontManager->getFamilyName(i, &familyName);
+            fontFamilies.push_back(familyName.c_str());
+        }
+
+        // Sort the font families alphabetically
+        std::sort(fontFamilies.begin(), fontFamilies.end());
+
+        // Print the sorted list
+        for (const auto& family : fontFamilies) {
+            std::cout << family << std::endl;
+        }
+
+        std::cout << "Total font families: " << familyCount << std::endl;
+    }
+
     const SkGlyphID glyphs[1] = {100};
 
     EXPORT Fonts::Fonts() {
@@ -997,11 +1023,37 @@ namespace Themes {
     }
 
     void Fonts::setTypeface(std::string &fontStr, int size) {
-        face = SkTypeface::MakeFromName(fontStr.c_str(), SkFontStyle::Normal());
-        if (face && face->uniqueID() != 0) {
-            std::cerr << "Warning: font '" << fontStr << "' could not be initialised, falling back to 'Arial'\n";
-            face = SkTypeface::MakeFromName("Arial", SkFontStyle::Normal());
+
+        if (fontStr == "Default") {
+            face = SkTypeface::MakeDefault();
+            if (!face) {
+                std::cerr << "Error: failes to create font\n";
+            }
+        } else {
+            const char * font_c = fontStr.c_str();
+            face = SkTypeface::MakeFromName(font_c, SkFontStyle::Normal());
+            if (!face) {
+                face = SkTypeface::MakeDefault();
+                SkString familyName;
+                face->getFamilyName(&familyName);
+                std::cerr << "\nWarning: font '" << fontStr << "' could not be loaded, using system default instead '" << familyName.c_str() << ". et GW_DEBUG=1 to display available fonts.\n";
+                char *val = getenv("GW_DEBUG");
+                if (val) {
+                    printAvailableFonts();
+                }
+            } else {
+                SkString familyName;
+                face->getFamilyName(&familyName);
+                if (familyName.c_str() != fontStr) {
+                    std::cerr << "\nWarning: font '" << fontStr << "' could not be loaded, swapped for '" << familyName.c_str() << " instead. Set GW_DEBUG=1 to display available fonts.\n";
+                    char *val = getenv("GW_DEBUG");
+                    if (val) {
+                        printAvailableFonts();
+                    }
+                }
+            }
         }
+
         SkScalar ts = size;
         fonty.setSize(ts);
         fonty.setTypeface(face);