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gui: factor image cell rendering into its own function

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This commit is contained in:
Wez Furlong 2021-02-22 09:36:34 -08:00
parent ee17e4e174
commit 5eb7634403
1 changed files with 93 additions and 68 deletions
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161
wezterm-gui/src/gui/termwindow.rs
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@ -3256,74 +3256,19 @@ impl TermWindow {
});
if let Some(image) = attrs.image() {
// Render iTerm2 style image attributes
let padding = self
.render_metrics
.cell_size
.height
.max(self.render_metrics.cell_size.width)
as usize;
let padding = if padding.is_power_of_two() {
padding
} else {
padding.next_power_of_two()
};
let sprite = gl_state
.glyph_cache
.borrow_mut()
.cached_image(image.image_data(), Some(padding))?;
let width = sprite.coords.size.width;
let height = sprite.coords.size.height;
let top_left = image.top_left();
let bottom_right = image.bottom_right();
// We *could* call sprite.texture.to_texture_coords() here,
// but since that takes integer pixel coordinates, we'd
// lose precision and end up with visual artifacts.
// Instead, we compute the texture coords here in floating point.
let texture_width = sprite.texture.width() as f32;
let texture_height = sprite.texture.height() as f32;
let origin = TextureCoord::new(
(sprite.coords.origin.x as f32 + (*top_left.x * width as f32))
/ texture_width,
(sprite.coords.origin.y as f32 + (*top_left.y * height as f32))
/ texture_height,
);
let size = TextureSize::new(
(*bottom_right.x - *top_left.x) * width as f32 / texture_width,
(*bottom_right.y - *top_left.y) * height as f32 / texture_height,
);
let texture_rect = TextureRect::new(origin, size);
let mut quad = match quads
.cell(cell_idx + params.pos.left, params.line_idx + params.pos.top)
{
Ok(quad) => quad,
Err(_) => break,
};
quad.set_hsv(hsv);
quad.set_fg_color(glyph_color);
quad.set_underline_color(underline_color);
quad.set_bg_color(bg_color);
quad.set_texture(texture_rect);
quad.set_texture_adjust(0., 0., 0., 0.);
quad.set_underline(white_space);
quad.set_has_color(true);
quad.set_cursor(
gl_state
.util_sprites
.cursor_sprite(cursor_shape)
.texture_coords(),
);
quad.set_cursor_color(params.cursor_border_color);
self.populate_image_quad(
image,
gl_state,
quads,
cell_idx,
&params,
hsv,
cursor_shape,
glyph_color,
underline_color,
bg_color,
white_space,
)?;
continue;
}
@ -3436,6 +3381,86 @@ impl TermWindow {
Ok(())
}
/// Render iTerm2 style image attributes
fn populate_image_quad(
&self,
image: &termwiz::image::ImageCell,
gl_state: &RenderState,
quads: &mut MappedQuads,
cell_idx: usize,
params: &RenderScreenLineOpenGLParams,
hsv: Option<config::HsbTransform>,
cursor_shape: Option<CursorShape>,
glyph_color: Color,
underline_color: Color,
bg_color: Color,
white_space: TextureRect,
) -> anyhow::Result<()> {
let padding = self
.render_metrics
.cell_size
.height
.max(self.render_metrics.cell_size.width) as usize;
let padding = if padding.is_power_of_two() {
padding
} else {
padding.next_power_of_two()
};
let sprite = gl_state
.glyph_cache
.borrow_mut()
.cached_image(image.image_data(), Some(padding))?;
let width = sprite.coords.size.width;
let height = sprite.coords.size.height;
let top_left = image.top_left();
let bottom_right = image.bottom_right();
// We *could* call sprite.texture.to_texture_coords() here,
// but since that takes integer pixel coordinates, we'd
// lose precision and end up with visual artifacts.
// Instead, we compute the texture coords here in floating point.
let texture_width = sprite.texture.width() as f32;
let texture_height = sprite.texture.height() as f32;
let origin = TextureCoord::new(
(sprite.coords.origin.x as f32 + (*top_left.x * width as f32)) / texture_width,
(sprite.coords.origin.y as f32 + (*top_left.y * height as f32)) / texture_height,
);
let size = TextureSize::new(
(*bottom_right.x - *top_left.x) * width as f32 / texture_width,
(*bottom_right.y - *top_left.y) * height as f32 / texture_height,
);
let texture_rect = TextureRect::new(origin, size);
let mut quad =
match quads.cell(cell_idx + params.pos.left, params.line_idx + params.pos.top) {
Ok(quad) => quad,
Err(_) => return Ok(()),
};
quad.set_hsv(hsv);
quad.set_fg_color(glyph_color);
quad.set_underline_color(underline_color);
quad.set_bg_color(bg_color);
quad.set_texture(texture_rect);
quad.set_texture_adjust(0., 0., 0., 0.);
quad.set_underline(white_space);
quad.set_has_color(true);
quad.set_cursor(
gl_state
.util_sprites
.cursor_sprite(cursor_shape)
.texture_coords(),
);
quad.set_cursor_color(params.cursor_border_color);
Ok(())
}
fn compute_cell_fg_bg(&self, params: ComputeCellFgBgParams) -> ComputeCellFgBgResult {
let selected = params.selection.contains(&params.cell_idx);