113 lines
3.6 KiB
Rust
113 lines
3.6 KiB
Rust
use crate::display_object::{DisplayObject, DisplayObjectBase};
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use crate::player::{RenderContext, UpdateContext};
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use crate::prelude::*;
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use crate::transform::Transform;
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#[derive(Clone, Debug)]
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pub struct Text<'gc> {
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base: DisplayObjectBase<'gc>,
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static_data: gc_arena::Gc<'gc, TextStatic>,
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}
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impl<'gc> Text<'gc> {
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pub fn from_swf_tag(context: &mut UpdateContext<'_, 'gc, '_>, tag: &swf::Text) -> Self {
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Self {
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base: Default::default(),
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static_data: gc_arena::Gc::allocate(
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context.gc_context,
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TextStatic {
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id: tag.id,
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text_transform: tag.matrix.clone().into(),
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text_blocks: tag.records.clone(),
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},
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),
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}
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}
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}
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impl<'gc> DisplayObject<'gc> for Text<'gc> {
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impl_display_object!(base);
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fn id(&self) -> CharacterId {
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self.static_data.id
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}
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fn run_frame(&mut self, _context: &mut UpdateContext) {
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// Noop
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}
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fn render(&self, context: &mut RenderContext) {
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context.transform_stack.push(self.transform());
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context.transform_stack.push(&Transform {
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matrix: self.static_data.text_transform,
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..Default::default()
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});
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let mut color = swf::Color {
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r: 0,
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g: 0,
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b: 0,
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a: 0,
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};
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let mut font_id = 0;
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let mut height = 0;
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let mut transform: Transform = Default::default();
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for block in &self.static_data.text_blocks {
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if let Some(x) = block.x_offset {
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transform.matrix.tx = x.get() as f32;
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}
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if let Some(y) = block.y_offset {
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transform.matrix.ty = y.get() as f32;
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}
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color = block.color.as_ref().unwrap_or(&color).clone();
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font_id = block.font_id.unwrap_or(font_id);
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height = block.height.unwrap_or(height);
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if let Some(font) = context.library.get_font(font_id) {
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let scale = f32::from(height) / font.scale();
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transform.matrix.a = scale;
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transform.matrix.d = scale;
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transform.color_transform.r_mult = f32::from(color.r) / 255.0;
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transform.color_transform.g_mult = f32::from(color.g) / 255.0;
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transform.color_transform.b_mult = f32::from(color.b) / 255.0;
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transform.color_transform.a_mult = f32::from(color.a) / 255.0;
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for c in &block.glyphs {
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if let Some(glyph) = font.get_glyph(c.index as usize) {
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context.transform_stack.push(&transform);
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context
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.renderer
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.render_shape(glyph.shape, context.transform_stack.transform());
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context.transform_stack.pop();
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transform.matrix.tx += c.advance as f32;
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}
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}
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}
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}
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context.transform_stack.pop();
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context.transform_stack.pop();
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}
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}
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unsafe impl<'gc> gc_arena::Collect for Text<'gc> {
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#[inline]
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fn trace(&self, cc: gc_arena::CollectionContext) {
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self.base.trace(cc);
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self.static_data.trace(cc);
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}
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}
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/// Static data shared between all instances of a text object.
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#[allow(dead_code)]
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#[derive(Debug, Clone)]
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struct TextStatic {
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id: CharacterId,
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text_transform: Matrix,
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text_blocks: Vec<swf::TextRecord>,
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}
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unsafe impl<'gc> gc_arena::Collect for TextStatic {
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#[inline]
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fn needs_trace() -> bool {
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false
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}
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}
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