2021-06-13 21:44:16 +00:00
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use crate::backend::render::{BitmapInfo, BitmapSource, ShapeHandle};
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2020-05-21 13:49:59 +00:00
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use crate::bounding_box::BoundingBox;
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2020-05-21 16:36:25 +00:00
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use crate::context::RenderContext;
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2020-05-21 13:49:59 +00:00
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use crate::shape_utils::{DistilledShape, DrawCommand, DrawPath};
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2020-06-14 01:24:09 +00:00
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use gc_arena::Collect;
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2020-05-21 16:36:25 +00:00
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use std::cell::Cell;
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2020-05-21 14:45:22 +00:00
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use swf::{FillStyle, LineStyle, Twips};
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2020-05-21 13:49:59 +00:00
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2020-06-14 01:24:09 +00:00
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#[derive(Clone, Debug, Collect)]
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#[collect(require_static)]
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2020-05-21 13:49:59 +00:00
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pub struct Drawing {
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2020-05-21 16:36:25 +00:00
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render_handle: Cell<Option<ShapeHandle>>,
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2020-05-21 13:49:59 +00:00
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shape_bounds: BoundingBox,
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edge_bounds: BoundingBox,
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2020-05-21 16:36:25 +00:00
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dirty: Cell<bool>,
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2020-05-21 13:49:59 +00:00
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fills: Vec<(FillStyle, Vec<DrawCommand>)>,
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lines: Vec<(LineStyle, Vec<DrawCommand>)>,
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2021-06-13 21:44:16 +00:00
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bitmaps: Vec<BitmapInfo>,
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2020-05-21 13:49:59 +00:00
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current_fill: Option<(FillStyle, Vec<DrawCommand>)>,
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current_line: Option<(LineStyle, Vec<DrawCommand>)>,
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2020-05-21 14:45:22 +00:00
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cursor: (Twips, Twips),
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2020-05-21 13:49:59 +00:00
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}
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2021-02-27 02:09:27 +00:00
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impl Default for Drawing {
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fn default() -> Self {
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Self::new()
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}
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}
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2020-05-21 13:49:59 +00:00
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impl Drawing {
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pub fn new() -> Self {
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Self {
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2020-05-21 16:36:25 +00:00
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render_handle: Cell::new(None),
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2020-05-21 13:49:59 +00:00
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shape_bounds: BoundingBox::default(),
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edge_bounds: BoundingBox::default(),
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2020-05-21 16:36:25 +00:00
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dirty: Cell::new(false),
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2020-05-21 13:49:59 +00:00
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fills: Vec::new(),
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lines: Vec::new(),
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2021-06-13 21:44:16 +00:00
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bitmaps: Vec::new(),
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2020-05-21 13:49:59 +00:00
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current_fill: None,
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current_line: None,
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2021-06-08 05:50:07 +00:00
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cursor: (Twips::ZERO, Twips::ZERO),
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2020-05-21 13:49:59 +00:00
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}
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}
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2021-03-05 04:03:12 +00:00
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pub fn from_swf_shape(shape: &swf::Shape) -> Self {
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let mut this = Self {
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render_handle: Cell::new(None),
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shape_bounds: shape.shape_bounds.clone().into(),
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edge_bounds: shape.edge_bounds.clone().into(),
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dirty: Cell::new(true),
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fills: Vec::new(),
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lines: Vec::new(),
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2021-06-13 21:44:16 +00:00
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bitmaps: Vec::new(),
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2021-03-05 04:03:12 +00:00
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current_fill: None,
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current_line: None,
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2021-06-08 05:50:07 +00:00
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cursor: (Twips::ZERO, Twips::ZERO),
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2021-03-05 04:03:12 +00:00
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};
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2021-06-22 10:04:27 +00:00
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let shape: DistilledShape = shape.into();
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2021-03-05 04:03:12 +00:00
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for path in shape.paths {
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match path {
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DrawPath::Stroke {
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style,
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is_closed: _,
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commands,
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} => {
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this.set_line_style(Some(style.clone()));
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for command in commands {
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this.draw_command(command);
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}
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this.set_line_style(None);
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}
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DrawPath::Fill { style, commands } => {
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this.set_fill_style(Some(style.clone()));
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for command in commands {
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this.draw_command(command);
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}
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this.set_fill_style(None);
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}
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}
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}
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this
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}
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2020-05-21 13:49:59 +00:00
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pub fn set_fill_style(&mut self, style: Option<FillStyle>) {
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// TODO: If current_fill is not closed, we should close it and also close current_line
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if let Some(existing) = self.current_fill.take() {
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self.fills.push(existing);
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}
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if let Some(style) = style {
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2020-05-21 14:45:22 +00:00
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self.current_fill = Some((
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style,
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vec![DrawCommand::MoveTo {
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x: self.cursor.0,
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y: self.cursor.1,
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}],
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));
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2020-05-21 13:49:59 +00:00
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}
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2020-05-21 16:36:25 +00:00
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self.dirty.set(true);
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2020-05-21 13:49:59 +00:00
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}
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pub fn clear(&mut self) {
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self.current_fill = None;
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self.current_line = None;
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self.fills.clear();
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self.lines.clear();
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2021-06-13 21:44:16 +00:00
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self.bitmaps.clear();
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2020-05-21 13:49:59 +00:00
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self.edge_bounds = BoundingBox::default();
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self.shape_bounds = BoundingBox::default();
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2020-05-21 16:36:25 +00:00
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self.dirty.set(true);
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2021-06-08 05:50:07 +00:00
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self.cursor = (Twips::ZERO, Twips::ZERO);
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2020-05-21 13:49:59 +00:00
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}
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pub fn set_line_style(&mut self, style: Option<LineStyle>) {
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if let Some(existing) = self.current_line.take() {
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self.lines.push(existing);
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}
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if let Some(style) = style {
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2020-05-21 14:45:22 +00:00
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self.current_line = Some((
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style,
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vec![DrawCommand::MoveTo {
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x: self.cursor.0,
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y: self.cursor.1,
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}],
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));
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2020-05-21 13:49:59 +00:00
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}
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2020-05-21 16:36:25 +00:00
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self.dirty.set(true);
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2020-05-21 13:49:59 +00:00
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}
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pub fn draw_command(&mut self, command: DrawCommand) {
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let mut include_last = false;
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2020-05-21 18:34:48 +00:00
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let stroke_width = if let Some((style, _)) = &self.current_line {
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style.width
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} else {
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2021-06-08 05:50:07 +00:00
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Twips::ZERO
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2020-05-21 18:34:48 +00:00
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};
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2020-05-21 13:49:59 +00:00
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match command {
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DrawCommand::MoveTo { .. } => {}
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2020-05-21 18:34:48 +00:00
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DrawCommand::LineTo { .. } => {
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stretch_bounding_box(&mut self.shape_bounds, &command, stroke_width);
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2021-06-08 05:50:07 +00:00
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stretch_bounding_box(&mut self.edge_bounds, &command, Twips::ZERO);
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2020-05-21 13:49:59 +00:00
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include_last = true;
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}
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2020-05-21 18:34:48 +00:00
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DrawCommand::CurveTo { .. } => {
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stretch_bounding_box(&mut self.shape_bounds, &command, stroke_width);
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2021-06-08 05:50:07 +00:00
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stretch_bounding_box(&mut self.edge_bounds, &command, Twips::ZERO);
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2020-05-21 13:49:59 +00:00
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include_last = true;
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}
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}
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2020-05-21 14:45:22 +00:00
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self.cursor = command.end_point();
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2020-05-21 13:49:59 +00:00
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if let Some((_, commands)) = &mut self.current_line {
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commands.push(command.clone());
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}
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if let Some((_, commands)) = &mut self.current_fill {
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commands.push(command);
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}
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if include_last {
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if let Some(command) = self
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.current_fill
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.as_ref()
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2020-05-21 16:20:27 +00:00
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.and_then(|(_, commands)| commands.last())
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2020-05-21 13:49:59 +00:00
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{
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2020-05-21 18:34:48 +00:00
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stretch_bounding_box(&mut self.shape_bounds, command, stroke_width);
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2021-06-08 05:50:07 +00:00
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stretch_bounding_box(&mut self.edge_bounds, command, Twips::ZERO);
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2020-05-21 13:49:59 +00:00
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}
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if let Some(command) = self
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.current_line
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.as_ref()
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2020-05-21 16:20:27 +00:00
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.and_then(|(_, commands)| commands.last())
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2020-05-21 13:49:59 +00:00
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{
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2020-05-21 18:34:48 +00:00
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stretch_bounding_box(&mut self.shape_bounds, command, stroke_width);
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2021-06-08 05:50:07 +00:00
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stretch_bounding_box(&mut self.edge_bounds, command, Twips::ZERO);
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2020-05-21 13:49:59 +00:00
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}
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}
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2020-05-21 16:36:25 +00:00
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self.dirty.set(true);
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2020-05-21 13:49:59 +00:00
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}
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2021-06-13 21:44:16 +00:00
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pub fn add_bitmap(&mut self, bitmap: BitmapInfo) -> u16 {
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let id = self.bitmaps.len() as u16;
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self.bitmaps.push(bitmap);
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id
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}
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2021-06-14 01:31:28 +00:00
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pub fn render(&self, context: &mut RenderContext) {
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2020-05-21 16:36:25 +00:00
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if self.dirty.get() {
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self.dirty.set(false);
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2020-05-21 13:49:59 +00:00
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let mut paths = Vec::new();
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for (style, commands) in &self.fills {
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paths.push(DrawPath::Fill {
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style,
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commands: commands.to_owned(),
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})
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}
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// TODO: If the current_fill is not closed, we should automatically close current_line
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if let Some((style, commands)) = &self.current_fill {
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paths.push(DrawPath::Fill {
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style,
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commands: commands.to_owned(),
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})
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}
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for (style, commands) in &self.lines {
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paths.push(DrawPath::Stroke {
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style,
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commands: commands.to_owned(),
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is_closed: false, // TODO: Determine this
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})
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}
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if let Some((style, commands)) = &self.current_line {
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paths.push(DrawPath::Stroke {
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style,
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commands: commands.to_owned(),
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is_closed: false, // TODO: Determine this
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})
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}
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let shape = DistilledShape {
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paths,
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shape_bounds: self.shape_bounds.clone(),
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2020-05-21 18:34:48 +00:00
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edge_bounds: self.edge_bounds.clone(),
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2020-05-21 13:49:59 +00:00
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id: 0,
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};
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2020-05-21 16:36:25 +00:00
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if let Some(handle) = self.render_handle.get() {
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2021-06-13 21:44:16 +00:00
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context.renderer.replace_shape(shape, self, handle);
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2020-05-21 13:49:59 +00:00
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} else {
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2020-05-21 16:36:25 +00:00
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self.render_handle
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2021-06-13 21:44:16 +00:00
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.set(Some(context.renderer.register_shape(shape, self)));
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2020-05-21 13:49:59 +00:00
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}
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}
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2020-05-21 16:36:25 +00:00
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if let Some(handle) = self.render_handle.get() {
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2020-05-21 13:49:59 +00:00
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context
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.renderer
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.render_shape(handle, context.transform_stack.transform());
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}
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}
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pub fn self_bounds(&self) -> BoundingBox {
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self.shape_bounds.clone()
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}
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2020-08-21 06:25:31 +00:00
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2021-06-08 05:33:37 +00:00
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pub fn hit_test(&self, point: (Twips, Twips), local_matrix: &crate::matrix::Matrix) -> bool {
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2020-08-21 06:25:31 +00:00
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use crate::shape_utils;
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for path in &self.fills {
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if shape_utils::draw_command_fill_hit_test(&path.1, point) {
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return true;
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}
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}
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for path in &self.lines {
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if shape_utils::draw_command_stroke_hit_test(&path.1, path.0.width, point, local_matrix)
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{
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return true;
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}
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}
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// TODO: Handle cases where fill is not closed.
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// Probably should have an explicit `flush` method that handles this.
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if let Some(path) = &self.current_line {
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if shape_utils::draw_command_stroke_hit_test(&path.1, path.0.width, point, local_matrix)
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{
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return true;
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}
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}
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false
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}
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2020-05-21 13:49:59 +00:00
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}
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2020-05-21 16:20:27 +00:00
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2021-06-13 21:44:16 +00:00
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impl BitmapSource for Drawing {
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fn bitmap(&self, id: u16) -> Option<BitmapInfo> {
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self.bitmaps.get(id as usize).cloned()
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}
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}
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2020-05-21 18:34:48 +00:00
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fn stretch_bounding_box(
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bounding_box: &mut BoundingBox,
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command: &DrawCommand,
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stroke_width: Twips,
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) {
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let radius = stroke_width / 2;
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2020-05-21 16:20:27 +00:00
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match *command {
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DrawCommand::MoveTo { x, y } => {
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2020-05-21 18:34:48 +00:00
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bounding_box.encompass(x - radius, y - radius);
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bounding_box.encompass(x + radius, y + radius);
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2020-05-21 16:20:27 +00:00
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}
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DrawCommand::LineTo { x, y } => {
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2020-05-21 18:34:48 +00:00
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bounding_box.encompass(x - radius, y - radius);
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bounding_box.encompass(x + radius, y + radius);
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2020-05-21 16:20:27 +00:00
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}
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DrawCommand::CurveTo { x1, y1, x2, y2 } => {
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2020-05-21 18:34:48 +00:00
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bounding_box.encompass(x1 - radius, y1 - radius);
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bounding_box.encompass(x1 + radius, y1 + radius);
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bounding_box.encompass(x2 - radius, y2 - radius);
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bounding_box.encompass(x2 + radius, y2 + radius);
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2020-05-21 16:20:27 +00:00
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}
|
|
|
|
}
|
|
|
|
}
|