102 lines
3.2 KiB
Rust
102 lines
3.2 KiB
Rust
use galaxy_core::ui::theme::Fill;
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use crate::render::model::{BlockItem, Decoration, RenderState, viewport::ViewportItem};
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use super::{RenderableBlock, paint::RenderContext};
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pub struct RenderableTemporaryBlock {
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viewport_item: ViewportItem,
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decoration: Option<Fill>,
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text_decoration: Vec<Decoration>,
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}
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impl RenderableTemporaryBlock {
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pub fn new(
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viewport_item: ViewportItem,
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decoration: Option<Fill>,
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text_decoration: Vec<Decoration>,
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) -> Self {
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Self {
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viewport_item,
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decoration,
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text_decoration,
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}
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}
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}
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impl RenderableBlock for RenderableTemporaryBlock {
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fn viewport_item(&self) -> &ViewportItem {
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&self.viewport_item
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}
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fn overlay_decoration(&self) -> Option<Fill> {
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self.decoration
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}
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fn layout(
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&mut self,
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_model: &RenderState,
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_ctx: &mut galaxyui::LayoutContext,
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_app: &galaxyui::AppContext,
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) {
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}
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fn paint(&mut self, model: &RenderState, ctx: &mut RenderContext, _app: &galaxyui::AppContext) {
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// We cannot use `extract_block` macro here since we need to locate the viewport item by content height instead of charoffset
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// (temporary block has an offset of zero).
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let content = model.content();
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let paragraph_block = match content.block_at_height(self.viewport_item.height()) {
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Some(block) => match (&block, block.item) {
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(
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block,
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BlockItem::TemporaryBlock {
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paragraph_block, ..
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},
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) => block.temporary_block(paragraph_block),
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other => {
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log::warn!(
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"Unexpected block {other:?} at {}",
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self.viewport_item.block_offset
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);
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return;
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}
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},
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None => return,
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};
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let start = paragraph_block.start_char_offset;
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let paragraph_styles = &model.styles().base_text;
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let mut decoration_index = 0;
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for paragraph in paragraph_block.paragraphs() {
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// We could draw text directly since temporary paragraph should have its own decoration and selection state.
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ctx.draw_text(
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paragraph.content_origin(),
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Default::default(),
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paragraph.item.frame(),
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paragraph_styles,
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);
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let paragraph_end = paragraph.end_char_offset();
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for (idx, decoration) in self.text_decoration[decoration_index..].iter().enumerate() {
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if decoration.start + start >= paragraph_end {
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decoration_index += idx;
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break;
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}
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if let Some(highlight) = decoration.background {
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paragraph.draw_highlight(
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decoration.start + start,
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decoration.end + start,
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highlight.into(),
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ctx,
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model.max_line(),
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);
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}
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}
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}
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}
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fn is_temporary(&self) -> bool {
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true
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}
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}
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