feat: add customgraph module

include/AGraph.hpp

@@ -0,0 +1,58 @@
+#pragma once
+
+#include <glibmm/markup.h>
+#include <gtkmm/label.h>
+#include <json/json.h>
+
+#include <deque>
+#include <vector>
+
+#include "AModule.hpp"
+
+namespace waybar {
+
+enum class GraphType { LINE, BAR, GAUGE };
+
+class AGraph : public AModule {
+ public:
+  AGraph(const Json::Value &, const std::string &, const std::string &, uint16_t interval = 0,
+         bool enable_click = false, bool enable_scroll = false);
+  virtual ~AGraph() = default;
+  auto update() -> void override;
+
+ protected:
+  Gtk::DrawingArea graph_;
+  std::deque<int> values_;
+  uint16_t datapoints_ = 20;
+  GraphType graph_type_ = GraphType::LINE;
+
+  void addValue(const int n);
+
+  const std::chrono::seconds interval_;
+
+  bool onDraw(const Cairo::RefPtr<Cairo::Context> &cr);
+
+  std::map<std::string, GtkMenuItem *> submenus_;
+  std::map<std::string, std::string> menuActionsMap_;
+  static void handleGtkMenuEvent(GtkMenuItem *menuitem, gpointer data);
+
+ private:
+  void drawFilledArea(const Cairo::RefPtr<Cairo::Context> &cr,
+                      const std::vector<std::pair<double, double>> &points, double height,
+                      const Gdk::RGBA &bg_color);
+
+  void drawLine(const Cairo::RefPtr<Cairo::Context> &cr,
+                const std::vector<std::pair<double, double>> &points, const Gdk::RGBA &fg_color);
+
+  void drawPath(const Cairo::RefPtr<Cairo::Context> &cr,
+                const std::vector<std::pair<double, double>> &points);
+
+  void drawBars(const Cairo::RefPtr<Cairo::Context> &cr,
+                double width, double height, int current_value,
+                const Gdk::RGBA &fg_color);
+
+  void drawGauge(const Cairo::RefPtr<Cairo::Context> &cr, double width, double height,
+                 int current_value, const Gdk::RGBA &fg_color);
+};
+
+}  // namespace waybar

include/modules/cpu_graph.hpp

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <fmt/format.h>
+
+#include <cstdint>
+#include <fstream>
+#include <numeric>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "AGraph.hpp"
+#include "util/sleeper_thread.hpp"
+
+namespace waybar::modules {
+
+class CpuGraph : public AGraph {
+ public:
+  CpuGraph(const std::string&, const Json::Value&);
+  virtual ~CpuGraph() = default;
+  auto update() -> void override;
+
+ private:
+  static constexpr const char *MODERATE_CLASS = "cpu-moderate";
+  static constexpr const char *HIGH_CLASS = "cpu-high";
+  static constexpr const char *INTENSIVE_CLASS = "cpu-intensive";
+
+  std::vector<std::tuple<size_t, size_t>> prev_times_;
+  util::SleeperThread thread_;
+};
+
+}  // namespace waybar::modules

include/modules/custom_graph.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <fmt/format.h>
+
+#include <csignal>
+#include <string>
+
+#include "AGraph.hpp"
+#include "util/command.hpp"
+#include "util/json.hpp"
+#include "util/sleeper_thread.hpp"
+
+namespace waybar::modules {
+
+class CustomGraph : public AGraph {
+ public:
+  CustomGraph(const std::string&, const std::string&, const Json::Value&, const std::string&);
+  virtual ~CustomGraph();
+  auto update() -> void override;
+  void refresh(int /*signal*/) override;
+
+ private:
+  void delayWorker();
+  void continuousWorker();
+  void waitingWorker();
+  void parseOutputRaw();
+  void parseOutputJson();
+  void handleEvent();
+  bool handleScroll(GdkEventScroll* e) override;
+  bool handleToggle(GdkEventButton* const& e) override;
+
+  const std::string name_;
+  const std::string output_name_;
+  std::string text_;
+  std::string id_;
+  std::string alt_;
+  std::string tooltip_;
+  const bool tooltip_format_enabled_;
+  std::vector<std::string> class_;
+  int percentage_;
+  FILE* fp_;
+  int pid_;
+  util::command::res output_;
+  util::JsonParser parser_;
+
+  util::SleeperThread thread_;
+};
+
+}  // namespace waybar::modules

man/waybar-cpu-graph.5.scd

@@ -0,0 +1,80 @@
+waybar-cpu-graph(5)
+
+# NAME
+
+waybar - cpu graph module
+
+# DESCRIPTION
+
+The *cpu graph* module displays a line graph with the CPU utilization.
+
+# CONFIGURATION
+
+*interval*: ++
+	typeof: integer ++
+	default: 10 ++
+	The interval in which the information gets polled.
+
+*width*: ++
+	typeof: integer ++
+	The length in pixels the module should display.
+
+*datapoints*: ++
+	typeof: integer ++
+	How many data points to show.
+
+*on-click*: ++
+	typeof: string  ++
+	Command to execute when clicked on the module.
+
+*on-click-middle*: ++
+	typeof: string ++
+	Command to execute when middle-clicked on the module using mousewheel.
+
+*on-click-right*: ++
+	typeof: string ++
+	Command to execute when you right-click on the module.
+
+*on-update*: ++
+	typeof: string ++
+	Command to execute when the module is updated.
+
+*on-scroll-up*: ++
+	typeof: string ++
+	Command to execute when scrolling up on the module.
+
+*on-scroll-down*: ++
+	typeof: string ++
+	Command to execute when scrolling down on the module.
+
+*smooth-scrolling-threshold*: ++
+	typeof: double ++
+	Threshold to be used when scrolling.
+
+*tooltip*: ++
+	typeof: bool ++
+	default: true ++
+	Option to disable tooltip on hover.
+
+*expand*: ++
+	typeof: bool ++
+	default: false ++
+	Enables this module to consume all left over space dynamically.
+
+# EXAMPLES
+
+Basic configuration:
+
+```
+"cpu_graph": {
+	"interval": 2,
+	"width": 10
+}
+```
+
+# STYLE
+
+- *#cpu_graph*
+- *.cpu-intensive*
+- *.cpu-high*
+- *.cpu-moderate*