text: /*
   * Copyright (C) 2019 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #ifndef FILAGUI_IMGUIEXTENSIONS_H
  #define FILAGUI_IMGUIEXTENSIONS_H
  
  struct ImVec2;
  
  /**
   * Namespace for custom widgets that follow the API conventions used by ImGui.
   * For example, the prototype for ImGuiExt::DirectionWidget is similar to ImGui::DragFloat3.
   */
  namespace ImGuiExt {
      /*
       * Draws an arrow widget for manipulating a unit vector (inspired by AntTweakBar).
       *
       * This adds a draggable 3D arrow widget to the current ImGui window, as well as a label and
       * three spin boxes that can be dragged or double-clicked for manual entry.
       *
       * The widget allow users to enter arbitrary vectors, so clients should copy the UI value
       * then normalize it. Clients should not directly normalize the UI value as this would cause
       * surprises for users who attempt to type in individual components.
       */
      bool DirectionWidget(const char* label, float v[3]);
  
      /**
       * Draws a plot with multiple series. The parameters are the same as for ImGui::ImPlotLines
       * except for the following:
       * - series_start: called when a new series starts rendering, this can be used to customize
       *   the series' style for instance
       * - series_end: called when a series is done rendering
       * - values_getter: the first parameter indicates which series is being rendered
       */
      void PlotLinesSeries(const char* label, int series_count,
              void (*series_start)(int series),
              float (*values_getter)(int series, void* data, int idx),
              void (*series_end)(int series),
              void* data, int values_count, int values_offset, const char* overlay_text,
              float scale_min, float scale_max, ImVec2 graph_size);
  }
  
  #endif // FILAGUI_IMGUIEXTENSIONS_H
  