Add palette option to save as preset

This works the same as saving a palette normally, but opens the file dialogue to the default palette preset directory.

data/gui.xml

@@ -1080,6 +1080,9 @@
       <separator />
       <item command="LoadPalette" text="@.load_palette" />
       <item command="SavePalette" text="@.save_palette" />
+      <item command="SavePalette" text="@.save_palette_as_preset">
+        <param name="save_as_preset" value="true" />
+      </item>
       <item command="LoadPalette" text="@.load_default_palette">
         <param name="preset" value="default" />
       </item>

data/strings/en.ini

@@ -1318,6 +1318,7 @@ ryb_color_wheel = RYB Color Wheel
 normal_map_color_wheel = Normal Map Color Wheel
 load_palette = L&oad Palette
 save_palette = S&ave Palette
+save_palette_as_preset = Save Palette as Preset
 load_default_palette = Load Default Palette
 save_as_default_palette = Save as Default Palette
 create_palette_from_current_sprite = Create Palette from Current Sprite

src/app/commands/cmd_save_palette.cpp

@@ -35,6 +35,7 @@ protected:
 
 private:
   std::string m_preset;
+  bool m_save_as_preset;
 };
 
 SavePaletteCommand::SavePaletteCommand()
@@ -45,6 +46,7 @@ SavePaletteCommand::SavePaletteCommand()
 void SavePaletteCommand::onLoadParams(const Params& params)
 {
   m_preset = params.get("preset");
+  m_save_as_preset = params.get("save_as_preset") == "true";
 }
 
 void SavePaletteCommand::onExecute(Context* context)
@@ -58,8 +60,9 @@ void SavePaletteCommand::onExecute(Context* context)
   else {
     base::paths exts = get_writable_palette_extensions();
     base::paths selFilename;
+    std::string initialPath = m_save_as_preset ? get_preset_palettes_dir() : "";
     if (!app::show_file_selector(
-          "Save Palette", "", exts,
+          "Save Palette", initialPath, exts,
           FileSelectorType::Save, selFilename))
       return;
 

src/app/modules/palettes.cpp

@@ -161,12 +161,7 @@ bool set_current_palette(const Palette *_palette, bool forced)
 std::string get_preset_palette_filename(const std::string& preset,
                                         const std::string& dot_extension)
 {
-  ResourceFinder rf;
-  rf.includeUserDir(base::join_path("palettes", ".").c_str());
-  std::string palettesDir = rf.getFirstOrCreateDefault();
-
-  if (!base::is_directory(palettesDir))
-    base::make_directory(palettesDir);
+  std::string palettesDir = get_preset_palettes_dir();
 
   return base::join_path(palettesDir, preset + dot_extension);
 }
@@ -176,4 +171,16 @@ std::string get_default_palette_preset_name()
   return "default";
 }
 
+std::string get_preset_palettes_dir()
+{
+  ResourceFinder rf;
+  rf.includeUserDir(base::join_path("palettes", ".").c_str());
+  std::string palettesDir = rf.getFirstOrCreateDefault();
+
+  if (!base::is_directory(palettesDir))
+    base::make_directory(palettesDir);
+
+  return palettesDir;
+}
+
 } // namespace app

src/app/modules/palettes.h

@@ -33,6 +33,7 @@ namespace app {
   std::string get_preset_palette_filename(const std::string& preset,
                                           const std::string& dot_extension);
   std::string get_default_palette_preset_name();
+  std::string get_preset_palettes_dir();
 
 } // namespace app