fix: improve how default background is determinated, hopefully improves #219

src/WallpaperEngine/Application/CApplicationContext.cpp

@@ -107,6 +107,11 @@ CApplicationContext::CApplicationContext (int argc, char* argv []) {
                 // to have any value
                 this->settings.general.screenBackgrounds [lastScreen] = translateBackground (optarg);
                 this->settings.general.screenScalings [lastScreen] = this->settings.render.window.scalingMode;
+
+                // update default background if not set
+                if (this->settings.general.defaultBackground.empty()) {
+                    this->settings.general.defaultBackground = translateBackground (optarg);
+                }
                 break;
 
             case 'o': {

src/WallpaperEngine/Application/CWallpaperApplication.cpp

@@ -27,7 +27,6 @@ namespace WallpaperEngine::Application {
 CWallpaperApplication::CWallpaperApplication (CApplicationContext& context,
                                               WallpaperEngine::WebBrowser::CWebBrowserContext& browserContext) :
     m_context (context),
-    m_defaultBackground (nullptr),
     m_browserContext (browserContext) {
     this->loadBackgrounds ();
     this->setupProperties ();
@@ -168,17 +167,12 @@ void CWallpaperApplication::setupContainer (CCombinedContainer& container, const
 }
 
 void CWallpaperApplication::loadBackgrounds () {
-    // load default background if specified
-    if (!this->m_context.settings.general.defaultBackground.empty ()) {
-        this->m_defaultBackground = this->loadBackground (this->m_context.settings.general.defaultBackground);
-    }
-
-    for (const auto& [background, path] : this->m_context.settings.general.screenBackgrounds) {
-        // screens with no background should use the default
+    for (const auto& [screen, path] : this->m_context.settings.general.screenBackgrounds) {
+        // screens with no screen should use the default
         if (path.empty ()) {
-            this->m_backgrounds [background] = this->m_defaultBackground;
+            this->m_backgrounds [screen] = this->loadBackground (this->m_context.settings.general.defaultBackground);
         } else {
-            this->m_backgrounds [background] = this->loadBackground (path);
+            this->m_backgrounds [screen] = this->loadBackground (path);
         }
     }
 }
@@ -211,9 +205,6 @@ void CWallpaperApplication::setupPropertiesForProject (const Core::CProject* pro
 void CWallpaperApplication::setupProperties () {
     for (const auto& [backgrounc, info] : this->m_backgrounds)
         this->setupPropertiesForProject (info);
-
-    if (this->m_defaultBackground != nullptr)
-        this->setupPropertiesForProject (this->m_defaultBackground);
 }
 
 void CWallpaperApplication::takeScreenshot (const std::filesystem::path& filename, FREE_IMAGE_FORMAT format) {
@@ -419,10 +410,6 @@ const std::map<std::string, Core::CProject*>& CWallpaperApplication::getBackgrou
     return this->m_backgrounds;
 }
 
-Core::CProject* CWallpaperApplication::getDefaultBackground () const {
-    return this->m_defaultBackground;
-}
-
 CApplicationContext& CWallpaperApplication::getContext () const {
     return this->m_context;
 }

src/WallpaperEngine/Application/CWallpaperApplication.h

@@ -59,10 +59,6 @@ class CWallpaperApplication {
      * @return Maps screens to loaded backgrounds
      */
     [[nodiscard]] const std::map<std::string, Core::CProject*>& getBackgrounds () const;
-    /**
-     * @return The default background to use if no specific project is loaded
-     */
-    [[nodiscard]] Core::CProject* getDefaultBackground () const;
     /**
      * @return The current application context
      */
@@ -114,8 +110,6 @@ class CWallpaperApplication {
      */
     void takeScreenshot (const std::filesystem::path& filename, FREE_IMAGE_FORMAT format);
 
-    /** The default background to display if no specific background was loaded */
-    Core::CProject* m_defaultBackground;
     /** The application context that contains the current app settings */
     CApplicationContext& m_context;
     /** Maps screens to backgrounds */

src/WallpaperEngine/Render/CTextureCache.cpp

@@ -27,19 +27,6 @@ const ITexture* CTextureCache::resolve (const std::string& filename) {
         }
     }
 
-    if (this->getContext ().getApp ().getDefaultBackground () != nullptr) {
-        try {
-            const ITexture* texture =
-                this->getContext ().getApp ().getDefaultBackground ()->getContainer ()->readTexture (filename);
-
-            this->store (filename, texture);
-
-            return texture;
-        } catch (CAssetLoadException&) {
-            // ignored, this happens if we're looking at the wrong background
-        }
-    }
-
     throw CAssetLoadException (filename, "Cannot find file");
 }