panel: move padding fields to new config

Related issues:
  - #27

src/config.cc

@@ -693,21 +693,21 @@ bool Reader::AddEntry_Panel(std::string const& key, std::string const& value) {
     if (!ParseNumber(value1, &padding_x_lr)) {
       return true;
     }
-    panel_config.padding_x_lr_ = panel_config.padding_x_ = padding_x_lr;
+    new_panel_config.padding_x_lr = new_panel_config.padding_x = padding_x_lr;
 
     if (!value2.empty()) {
       int padding_y;
       if (!ParseNumber(value2, &padding_y)) {
         return true;
       }
-      panel_config.padding_y_ = padding_y;
+      new_panel_config.padding_y = padding_y;
     }
     if (!value3.empty()) {
       int padding_x;
       if (!ParseNumber(value3, &padding_x)) {
         return true;
       }
-      panel_config.padding_x_ = padding_x;
+      new_panel_config.padding_x = padding_x;
     }
     return true;
   }

src/panel.cc

@@ -95,6 +95,10 @@ PanelConfig PanelConfig::Default() {
   cfg.mouse_pressed_saturation = 0;
   cfg.mouse_pressed_brightness = -10;
 
+  cfg.padding_x_lr = 0;
+  cfg.padding_x = 0;
+  cfg.padding_y = 0;
+
   cfg.width = 100;
   cfg.percent_x = true;
   cfg.height = 40;
@@ -682,6 +686,10 @@ void Panel::UseConfig(PanelConfig const& cfg, unsigned int num_desktop) {
     config_.monitor = num_desktop;
   }
 
+  padding_x_lr_ = cfg.padding_x_lr;
+  padding_x_ = cfg.padding_x;
+  padding_y_ = cfg.padding_y;
+
   width_ = cfg.width;
   height_ = cfg.height;
 }

src/panel.hh

@@ -91,6 +91,10 @@ class PanelConfig {
   int mouse_pressed_saturation;
   int mouse_pressed_brightness;
 
+  int padding_x_lr;
+  int padding_x;
+  int padding_y;
+
   unsigned int width;
   bool percent_x;
   unsigned int height;