feat: add black/new background buttons and standard styling

src/main.py

@@ -26,7 +26,7 @@ def main():
     app = QApplication(sys.argv)
     app.setApplicationName("TeletextEditor")
     app.setOrganizationName("DanielDybing")
-    app.setDesktopFileName("TeletextEditor") # Helps Linux DEs group windows
+    app.setDesktopFileName("no.ddybing.TeletextEditor") # Helps Linux DEs group windows
     
     # Debug Image Formats
     supported_formats = [str(fmt, 'utf-8') for fmt in QImageReader.supportedImageFormats()]

src/teletext/ui.py

@@ -192,6 +192,7 @@ class MainWindow(QMainWindow):
         color_layout.addWidget(self.chk_graphics)
 
         colors = [
+            ("Black", 0x00, "#000000"),
             ("Red", 0x01, "#FF0000"),
             ("Green", 0x02, "#00FF00"),
             ("Yellow", 0x03, "#FFFF00"),
@@ -203,7 +204,20 @@ class MainWindow(QMainWindow):
         
         for name, code, hex_color in colors:
             btn = QPushButton(name)
-            btn.setStyleSheet(f"background-color: {hex_color}; font-weight: bold; color: black;")
+            btn.setFixedSize(60, 30) # Fixed size for uniformity
+            
+            # Common style
+            style = f"background-color: {hex_color}; font-weight: bold; border: 1px solid #555; border-radius: 3px;"
+            
+            if name == "Black":
+                style += " color: white;"
+            elif name in ["Blue", "Red", "Magenta"]: # Darker backgrounds
+                style += " color: white;"
+            else:
+                style += " color: black;"
+                
+            btn.setStyleSheet(style)
+            
             # Use separate method to handle graphics check
             btn.clicked.connect(lambda checked, c=code: self.insert_color(c))
             color_layout.addWidget(btn)
@@ -216,6 +230,27 @@ class MainWindow(QMainWindow):
         color_layout.addStretch()
         center_layout.addLayout(color_layout)
 
+        # Background Controls
+        bg_layout = QHBoxLayout()
+        bg_label = QLabel("Background:")
+        bg_layout.addWidget(bg_label)
+
+        # New Background (0x1D)
+        btn_new_bg = QPushButton("New BG")
+        btn_new_bg.setToolTip("Sets the current foreground color as the new background color (0x1D)")
+        btn_new_bg.clicked.connect(lambda: self.insert_char(0x1D))
+        bg_layout.addWidget(btn_new_bg)
+
+        # Black Background (0x1C)
+        btn_black_bg = QPushButton("Black BG")
+        btn_black_bg.setToolTip("Resets the background color to Black (0x1C)")
+        btn_black_bg.setStyleSheet("background-color: black; color: white;")
+        btn_black_bg.clicked.connect(lambda: self.insert_char(0x1C))
+        bg_layout.addWidget(btn_black_bg)
+        
+        bg_layout.addStretch()
+        center_layout.addLayout(bg_layout)
+
         # Canvas
         self.canvas = TeletextCanvas()
         self.canvas.cursorChanged.connect(self.on_cursor_changed)