widget_measurement.h

Go to the documentation of this file.

#ifndef YAZE_APP_GUI_WIDGET_MEASUREMENT_H
#define YAZE_APP_GUI_WIDGET_MEASUREMENT_H
 
#include <string>
#include <unordered_map>
#include <vector>
 
#include "absl/strings/str_format.h"
#include "imgui/imgui.h"
 
namespace yaze {
namespace gui {
 
struct WidgetMetrics {
  ImVec2 size;           // Width and height
  ImVec2 position;       // Screen position
  ImVec2 content_size;   // Available content region
  ImVec2 rect_min;       // Bounding box min
  ImVec2 rect_max;       // Bounding box max
  float cursor_pos_x;    // Cursor X after rendering
  std::string widget_id; // Widget identifier
  std::string type;      // Widget type (button, input, combo, etc.)
  
  std::string ToString() const {
    return absl::StrFormat(
        "Widget '%s' (%s): size=(%.1f,%.1f) pos=(%.1f,%.1f) content=(%.1f,%.1f) cursor_x=%.1f",
        widget_id, type, size.x, size.y, position.x, position.y,
        content_size.x, content_size.y, cursor_pos_x);
  }
};
 
class WidgetMeasurement {
 public:
  static WidgetMeasurement& Instance() {
    static WidgetMeasurement instance;
    return instance;
  }
 
  WidgetMetrics MeasureLastItem(const std::string& widget_id,
                                const std::string& type = "unknown");
 
  void BeginToolbarMeasurement(const std::string& toolbar_id);
 
  void EndToolbarMeasurement();
 
  float GetToolbarWidth(const std::string& toolbar_id) const;
 
  bool WouldToolbarOverflow(const std::string& toolbar_id,
                            float available_width) const;
 
  const std::vector<WidgetMetrics>& GetToolbarMetrics(
      const std::string& toolbar_id) const;
 
  void ClearFrame();
 
  std::string ExportMetricsJSON() const;
 
  void SetEnabled(bool enabled) { enabled_ = enabled; }
  bool IsEnabled() const { return enabled_; }
 
 private:
  WidgetMeasurement() = default;
 
  bool enabled_ = true;
  std::string current_toolbar_id_;
  float current_toolbar_width_ = 0.0f;
  float current_toolbar_start_x_ = 0.0f;
 
  // Store measurements per toolbar
  std::unordered_map<std::string, std::vector<WidgetMetrics>> toolbar_metrics_;
  std::unordered_map<std::string, float> toolbar_widths_;
 
  // All measurements from current frame
  std::vector<WidgetMetrics> frame_metrics_;
};
 
}  // namespace gui
}  // namespace yaze
 
#endif  // YAZE_APP_GUI_WIDGET_MEASUREMENT_H