63 lines
2.3 KiB
Rust
63 lines
2.3 KiB
Rust
//! uis for emigui types.
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use crate::{
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containers::show_tooltip,
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label,
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math::*,
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paint::{color::WHITE, PaintCmd, Texture, Triangles, Vertex},
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};
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impl Texture {
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pub fn ui(&self, ui: &mut crate::Ui) {
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ui.add(label!(
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"Texture size: {} x {} (hover to zoom)",
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self.width,
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self.height
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));
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let mut size = vec2(self.width as f32, self.height as f32);
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if size.x > ui.available().width() {
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size *= ui.available().width() / size.x;
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}
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let interact = ui.reserve_space(size, None);
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let rect = interact.rect;
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let top_left = Vertex {
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pos: rect.min,
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uv: (0, 0),
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color: WHITE,
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};
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let bottom_right = Vertex {
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pos: rect.max,
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uv: (self.width as u16 - 1, self.height as u16 - 1),
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color: WHITE,
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};
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let mut triangles = Triangles::default();
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triangles.add_rect(top_left, bottom_right);
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ui.add_paint_cmd(PaintCmd::Triangles(triangles));
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if interact.hovered {
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show_tooltip(ui.ctx(), |ui| {
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let pos = ui.top_left();
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let zoom_rect = ui.reserve_space(vec2(128.0, 128.0), None).rect;
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let u = remap_clamp(pos.x, rect.range_x(), 0.0..=self.width as f32 - 1.0).round();
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let v = remap_clamp(pos.y, rect.range_y(), 0.0..=self.height as f32 - 1.0).round();
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let texel_radius = 32.0;
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let u = clamp(u, texel_radius..=self.width as f32 - 1.0 - texel_radius);
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let v = clamp(v, texel_radius..=self.height as f32 - 1.0 - texel_radius);
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let top_left = Vertex {
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pos: zoom_rect.min,
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uv: ((u - texel_radius) as u16, (v - texel_radius) as u16),
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color: WHITE,
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};
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let bottom_right = Vertex {
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pos: zoom_rect.max,
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uv: ((u + texel_radius) as u16, (v + texel_radius) as u16),
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color: WHITE,
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};
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let mut triangles = Triangles::default();
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triangles.add_rect(top_left, bottom_right);
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ui.add_paint_cmd(PaintCmd::Triangles(triangles));
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});
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}
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}
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}
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