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|
use std::path::PathBuf;
use crate::{
text::{DefinedText, Text},
types::{CoreShapeContext, DefinedCoreShapeContext, DefinedPoint2D, Float, Point2D},
Renderer, SolverContext,
};
#[derive(Debug, Clone)]
pub struct CoreDrawable {
pub(crate) shape: CoreShape,
pub(crate) context: CoreShapeContext,
}
impl CoreDrawable {
pub fn new(shape: CoreShape, context: CoreShapeContext) -> Self {
Self { shape, context }
}
// TODO: I don't like this design
// TODO: plus, having an enum for CoreShape could be bad since types have
// various sizes
pub(crate) fn inherent_constraints(
&self,
solver: &mut dyn SolverContext,
renderer: &mut dyn Renderer,
) {
match &self.shape {
CoreShape::Text(text) => {
let (text_width, text_height) = renderer.text_extents(&text.content, &text.font);
let calculated_width =
solver.float_mul(&[Float::Fixed(text_width), text.font.size]);
let bounds_width = self.context.bounds().width(solver);
let width_constraint = solver.float_eq(bounds_width, calculated_width);
solver.constrain(width_constraint);
let calculated_height =
solver.float_mul(&[Float::Fixed(text_height), text.font.size]);
let bounds_height = self.context.bounds().height(solver);
let height_constraint = solver.float_eq(bounds_height, calculated_height);
solver.constrain(height_constraint);
}
CoreShape::StraightPath(path) => {
let (all_x, all_y): (Vec<_>, Vec<_>) =
path.points.iter().map(|p| (p.x, p.y)).unzip();
let min_x = solver.float_min(&all_x);
let max_x = solver.float_max(&all_x);
let min_y = solver.float_min(&all_y);
let max_y = solver.float_max(&all_y);
let bounds_top = self.context.bounds().top(solver);
let bounds_bottom = self.context.bounds().bottom(solver);
let bounds_left = self.context.bounds().left(solver);
let bounds_right = self.context.bounds().right(solver);
let top_constraint = solver.float_eq(bounds_top, min_x);
solver.constrain(top_constraint);
let bottom_constraint = solver.float_eq(bounds_bottom, max_x);
solver.constrain(bottom_constraint);
let left_constraint = solver.float_eq(bounds_left, min_y);
solver.constrain(left_constraint);
let right_constraint = solver.float_eq(bounds_right, max_y);
solver.constrain(right_constraint);
}
CoreShape::Image(image) => {
if !image.keep_aspect_ratio {
return;
}
let scale_x = solver.new_free_float();
let scale_y = solver.new_free_float();
let constraint = solver.float_eq(scale_x, scale_y);
solver.constrain(constraint);
let (orig_width, orig_height) = renderer.geometry_for_image(&image.path);
let orig_width_scaled = solver.float_mul(&[scale_x, Float::Fixed(orig_width)]);
let width_constraint =
solver.float_eq(self.context.bounds().width, orig_width_scaled);
solver.constrain(width_constraint);
let orig_height_scaled = solver.float_mul(&[scale_y, Float::Fixed(orig_height)]);
let height_constraint =
solver.float_eq(self.context.bounds().height, orig_height_scaled);
solver.constrain(height_constraint);
}
_ => (),
}
}
}
#[derive(Debug, Clone)]
pub enum CoreShape {
Rectangle(Rectangle),
Text(Text),
StraightPath(StraightPath),
Image(Image),
}
impl From<Rectangle> for CoreShape {
fn from(rectangle: Rectangle) -> Self {
CoreShape::Rectangle(rectangle)
}
}
impl From<Text> for CoreShape {
fn from(text: Text) -> Self {
CoreShape::Text(text)
}
}
impl From<StraightPath> for CoreShape {
fn from(path: StraightPath) -> Self {
CoreShape::StraightPath(path)
}
}
impl From<Image> for CoreShape {
fn from(image: Image) -> Self {
CoreShape::Image(image)
}
}
pub struct DefinedCoreDrawable {
pub(crate) shape: DefinedCoreShape,
pub(crate) context: DefinedCoreShapeContext,
}
pub enum DefinedCoreShape {
Rectangle(Rectangle),
Text(DefinedText),
StraightPath(DefinedStraightPath),
Image(Image),
}
#[derive(Copy, Clone, Debug, Default)]
pub struct Rectangle {}
#[derive(Clone, Debug, Default)]
pub struct StraightPath {
pub(crate) points: Vec<Point2D>,
}
impl StraightPath {
pub fn new(points: Vec<Point2D>) -> Self {
Self { points }
}
}
pub struct DefinedStraightPath {
pub(crate) points: Vec<DefinedPoint2D>,
}
#[derive(Clone, Debug, Default)]
pub struct Image {
pub(crate) path: PathBuf,
pub(crate) keep_aspect_ratio: bool,
}
impl Image {
pub fn new(path: PathBuf, keep_aspect_ratio: bool) -> Self {
Self {
path,
keep_aspect_ratio,
}
}
}
|
