r3bl_tui 0.1.2

/*
 *   Copyright (c) 2022 R3BL LLC
 *   All rights reserved.
 *
 *   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.
 */

#[cfg(test)]
mod tests {
  use r3bl_rs_utils_core::*;
  use r3bl_rs_utils_macro::style;

  use crate::*;

  #[test]
  fn test_surface_2_col_simple() -> CommonResult<()> {
    throws!({
      let mut tw_surface = Surface {
        stylesheet: dsl_stylesheet()?,
        ..Default::default()
      };

      tw_surface.surface_start(SurfaceProps {
        pos: position!(col:0, row:0),
        size: size!(cols:500, rows:500),
      })?;

      create_main_container(&mut tw_surface)?;

      tw_surface.surface_end()?;

      println!("{:?}", &tw_surface.render_pipeline);
      println!("{}", serde_json::to_string_pretty(&tw_surface.render_pipeline).unwrap());
    });
  }

  /// Main container 0.
  fn create_main_container(tw_surface: &mut Surface) -> CommonResult<()> {
    throws!({
      tw_surface.box_start(FlexBoxProps {
        id: 0,
        dir: Direction::Horizontal,
        requested_size_percent: requested_size_percent!(width:100, height:100),
        maybe_styles: None,
      })?;

      make_container_assertions(tw_surface)?;

      create_left_col(tw_surface)?;
      create_right_col(tw_surface)?;

      tw_surface.box_end()?;
    });

    fn make_container_assertions(tw_surface: &Surface) -> CommonResult<()> {
      throws!({
        let layout_item = tw_surface.stack_of_boxes.first().unwrap();
        assert_eq2!(layout_item.id, 0);
        assert_eq2!(layout_item.dir, Direction::Horizontal);
        assert_eq2!(layout_item.origin_pos, position!(col:0,row: 0));
        assert_eq2!(layout_item.bounds_size, size!(cols:500, rows:500)); // due to `padding: 1`
        assert_eq2!(
          layout_item.requested_size_percent,
          requested_size_percent!(width:100, height:100)
        );
        assert_eq2!(layout_item.insertion_pos_for_next_box, Some(position!(col:0, row:0)));
        assert_eq2!(layout_item.get_computed_style(), None);
      });
    }
  }

  /// Left column 1.
  fn create_left_col(tw_surface: &mut Surface) -> CommonResult<()> {
    throws!({
      // With macro.
      box_start! {
        in:                     tw_surface,
        id:                     1,
        dir:                    Direction::Vertical,
        requested_size_percent: requested_size_percent!(width:50, height:100),
        styles:                 ["1"]
      }
      make_left_col_assertions(tw_surface)?;
      tw_surface.box_end()?;
    });

    fn make_left_col_assertions(tw_surface: &Surface) -> CommonResult<()> {
      throws!({
        let layout_item = tw_surface.stack_of_boxes.last().unwrap();
        assert_eq2!(layout_item.id, 1);
        assert_eq2!(layout_item.dir, Direction::Vertical);

        assert_eq2!(layout_item.origin_pos, position!(col:0, row:0));
        assert_eq2!(layout_item.bounds_size, size!(cols:250, rows:500));

        assert_eq2!(layout_item.style_adjusted_origin_pos, position!(col:2, row:2)); // Take padding into account.
        assert_eq2!(layout_item.style_adjusted_bounds_size, size!(cols:246, rows:496)); // Take padding into account.

        assert_eq2!(
          layout_item.requested_size_percent,
          requested_size_percent!(width:50, height:100)
        );
        assert_eq2!(layout_item.insertion_pos_for_next_box, None);
        assert_eq2!(
          layout_item.get_computed_style(),
          Stylesheet::compute(&tw_surface.stylesheet.find_styles_by_ids(vec!["1"]))
        );
      });
    }
  }

  /// Right column 2.
  fn create_right_col(tw_surface: &mut Surface) -> CommonResult<()> {
    throws!({
      // No macro.
      tw_surface.box_start(FlexBoxProps {
        maybe_styles: get_styles! { from: tw_surface.stylesheet, ["2"] },
        id: 2,
        dir: Direction::Vertical,
        requested_size_percent: requested_size_percent!(width:50, height:100),
      })?;
      make_right_col_assertions(tw_surface)?;
      tw_surface.box_end()?;
    });

    fn make_right_col_assertions(tw_surface: &Surface) -> CommonResult<()> {
      throws!({
        let current_box = tw_surface.stack_of_boxes.last().unwrap();
        assert_eq2!(current_box.id, 2);
        assert_eq2!(current_box.dir, Direction::Vertical);

        assert_eq2!(current_box.origin_pos, position!(col:250, row:0));
        assert_eq2!(current_box.bounds_size, size!(cols:250, rows:500));

        assert_eq2!(current_box.style_adjusted_origin_pos, position!(col:253, row:3)); // Take padding into account.
        assert_eq2!(current_box.style_adjusted_bounds_size, size!(cols:244, rows:494)); // Take padding into account.

        assert_eq2!(
          current_box.requested_size_percent,
          requested_size_percent!(width: 50, height: 100)
        );
        assert_eq2!(current_box.insertion_pos_for_next_box, None);
        assert_eq2!(
          current_box.get_computed_style(),
          Stylesheet::compute(&tw_surface.stylesheet.find_styles_by_ids(vec!["2"]))
        );
      });
    }
  }

  /// Create a stylesheet containing styles using DSL.
  fn dsl_stylesheet() -> CommonResult<Stylesheet> {
    throws_with_return!({
      stylesheet! {
        style! {
          id: "1"
          attrib: [dim, bold]
          padding: 2
          color_fg: TWColor::Rgb { r: 255, g: 255, b: 0 } /* Yellow. */
          color_bg: TWColor::Rgb { r: 128, g: 128, b: 128 } /* Grey. */
        },
        style! {
          id: "2"
          attrib: [underline, strikethrough]
          padding: 3
          color_fg: TWColor::Rgb { r: 0, g: 0, b: 0 } /* Black. */
          color_bg: TWColor::Rgb { r: 255, g: 255, b: 255 } /* White. */
        }
      }
    })
  }
}