Add stretching of modules and modules-center toggling

This Patch allows the stretching of modules-{left,center,right} as well
add a "expand" flag to AModule. This allows one module to consume the
leftover space.
To allow the left or right modules to fully consume the center, the
changes also include a way to remove the center box (center_)
altogether.

Author: TripleTrable

include/AModule.hpp

@@ -23,6 +23,8 @@ class AModule : public IModule {
   /// Emitting on this dispatcher triggers a update() call
   Glib::Dispatcher dp;
 
+  bool expandEnabled() const;
+
  protected:
   // Don't need to make an object directly
   // Derived classes are able to use it
@@ -50,6 +52,7 @@ class AModule : public IModule {
  private:
   bool handleUserEvent(GdkEventButton *const &ev);
   const bool isTooltip;
+  const bool isExpand;
   bool hasUserEvents_;
   std::vector<int> pid_;
   gdouble distance_scrolled_y_;

man/waybar-backlight-slider.5.scd

@@ -31,6 +31,11 @@ The brightness can be controlled by dragging the slider across the bar or clicki
     typeof: string ++
     The name of the preferred device to control. If left empty, a device will be chosen automatically.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # EXAMPLES
 
 ```

man/waybar-backlight.5.scd

@@ -99,6 +99,11 @@ The *backlight* module displays the current backlight level.
 	typeof: array ++
 	The actions corresponding to the buttons of the menu.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # EXAMPLE:
 
 ```

man/waybar-battery.5.scd

@@ -122,6 +122,11 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 	typeof: array ++
 	The actions corresponding to the buttons of the menu.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # FORMAT REPLACEMENTS
 
 *{capacity}*: Capacity in percentage

man/waybar-bluetooth.5.scd

@@ -142,6 +142,11 @@ Addressed by *bluetooth*
 	typeof: array ++
 	The actions corresponding to the buttons of the menu.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # FORMAT REPLACEMENTS
 
 *{status}*: Status of the bluetooth device.

man/waybar-cffi.5.scd

@@ -15,6 +15,11 @@ Addressed by *cffi/<name>*
 	typeof: string ++
 	The path to the dynamic library to load to control the widget.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 Some additional configuration may be required depending on the cffi dynamic library being used.
 
 

man/waybar-clock.5.scd

@@ -96,6 +96,10 @@ $XDG_CONFIG_HOME/waybar/config ++
 :[ array
 :[
 :[ The actions corresponding to the buttons of the menu.
+|[ *expand*:
+:[ bool
+:[ false
+:[ Enables this module to consume all left over space dynamically.
 
 View all valid format options in *strftime(3)* or have a look https://en.cppreference.com/w/cpp/chrono/duration/formatter
 

man/waybar-cpu.5.scd

@@ -82,6 +82,11 @@ The *cpu* module displays the current CPU utilization.
 	default: true ++
 	Option to disable tooltip on hover.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # FORMAT REPLACEMENTS
 
 *{load}*: Current CPU load.

man/waybar-custom.5.scd

@@ -138,6 +138,11 @@ Addressed by *custom/<name>*
 	typeof: array ++
 	The actions corresponding to the buttons of the menu.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # RETURN-TYPE
 
 When *return-type* is set to *json*, Waybar expects the *exec*-script  to output its data in JSON format.

man/waybar-disk.5.scd

@@ -106,6 +106,11 @@ Addressed by *disk*
 	typeof: array ++
 	The actions corresponding to the buttons of the menu.
 
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
 # FORMAT REPLACEMENTS
 
 *{percentage_used}*: Percentage of disk in use.