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factor out RenderMetrics

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This commit is contained in:
Wez Furlong 2019-10-08 07:37:36 -07:00
parent 85c3884ea0
commit 3ae1693433
1 changed files with 79 additions and 77 deletions
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156
src/frontend/software/termwindow.rs
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@ -155,18 +155,49 @@ impl<T: Texture2d> GlyphCache<T> {
} }
} }
pub struct TermWindow { struct RenderMetrics {
window: Option<Window>,
fonts: Rc<FontConfiguration>,
_config: Arc<Config>,
cell_size: Size,
dimensions: Dimensions,
mux_window_id: MuxWindowId,
descender: f64, descender: f64,
descender_row: isize, descender_row: isize,
descender_plus_one: isize, descender_plus_one: isize,
descender_plus_two: isize, descender_plus_two: isize,
strike_row: isize, strike_row: isize,
cell_size: Size,
}
impl RenderMetrics {
fn new(fonts: &Rc<FontConfiguration>) -> Self {
let metrics = fonts
.default_font_metrics()
.expect("failed to get font metrics!?");
let (cell_height, cell_width) = (
metrics.cell_height.ceil() as usize,
metrics.cell_width.ceil() as usize,
);
let descender_row = (cell_height as f64 + metrics.descender) as isize;
let descender_plus_one = (1 + descender_row).min(cell_height as isize - 1);
let descender_plus_two = (2 + descender_row).min(cell_height as isize - 1);
let strike_row = descender_row / 2;
Self {
descender: metrics.descender,
descender_row,
descender_plus_one,
descender_plus_two,
strike_row,
cell_size: Size::new(cell_width as isize, cell_height as isize),
}
}
}
pub struct TermWindow {
window: Option<Window>,
fonts: Rc<FontConfiguration>,
_config: Arc<Config>,
dimensions: Dimensions,
mux_window_id: MuxWindowId,
render_metrics: RenderMetrics,
glyph_cache: RefCell<GlyphCache<ImageTexture>>, glyph_cache: RefCell<GlyphCache<ImageTexture>>,
//atlas: RefCell<Atlas<ImageTexture>>, //atlas: RefCell<Atlas<ImageTexture>>,
clipboard: Arc<dyn term::Clipboard>, clipboard: Arc<dyn term::Clipboard>,
@ -275,8 +306,8 @@ impl WindowCallbacks for TermWindow {
} }
WMEK::HorzWheel(_) => TMB::None, WMEK::HorzWheel(_) => TMB::None,
}, },
x: (event.x as isize / self.cell_size.width) as usize, x: (event.x as isize / self.render_metrics.cell_size.width) as usize,
y: (event.y as isize / self.cell_size.height) as i64, y: (event.y as isize / self.render_metrics.cell_size.height) as i64,
modifiers: window_mods_to_termwiz_mods(event.modifiers), modifiers: window_mods_to_termwiz_mods(event.modifiers),
}, },
&mut Host { &mut Host {
@ -391,22 +422,13 @@ impl TermWindow {
); );
let (physical_rows, physical_cols) = tab.renderer().physical_dimensions(); let (physical_rows, physical_cols) = tab.renderer().physical_dimensions();
let metrics = fontconfig.default_font_metrics()?; let render_metrics = RenderMetrics::new(fontconfig);
let (cell_height, cell_width) = (
metrics.cell_height.ceil() as usize,
metrics.cell_width.ceil() as usize,
);
let width = cell_width * physical_cols; let width = render_metrics.cell_size.width as usize * physical_cols;
let height = cell_height * physical_rows; let height = render_metrics.cell_size.height as usize * physical_rows;
let glyph_cache = RefCell::new(GlyphCache::new(fontconfig, 4096)); let glyph_cache = RefCell::new(GlyphCache::new(fontconfig, 4096));
let descender_row = (cell_height as f64 + metrics.descender) as isize;
let descender_plus_one = (1 + descender_row).min(cell_height as isize - 1);
let descender_plus_two = (2 + descender_row).min(cell_height as isize - 1);
let strike_row = descender_row / 2;
let window = Window::new_window( let window = Window::new_window(
"wezterm", "wezterm",
"wezterm", "wezterm",
@ -414,15 +436,10 @@ impl TermWindow {
height, height,
Box::new(Self { Box::new(Self {
window: None, window: None,
cell_size: Size::new(cell_width as isize, cell_height as isize),
mux_window_id, mux_window_id,
_config: Arc::clone(config), _config: Arc::clone(config),
fonts: Rc::clone(fontconfig), fonts: Rc::clone(fontconfig),
descender: metrics.descender, render_metrics,
descender_row,
descender_plus_one,
descender_plus_two,
strike_row,
dimensions: Dimensions { dimensions: Dimensions {
pixel_width: width, pixel_width: width,
pixel_height: height, pixel_height: height,
@ -530,8 +547,10 @@ impl TermWindow {
} }
fn spawn_tab(&mut self, domain: &SpawnTabDomain) -> Fallible<TabId> { fn spawn_tab(&mut self, domain: &SpawnTabDomain) -> Fallible<TabId> {
let rows = (self.dimensions.pixel_height as usize + 1) / self.cell_size.height as usize; let rows = (self.dimensions.pixel_height as usize + 1)
let cols = (self.dimensions.pixel_width as usize + 1) / self.cell_size.width as usize; / self.render_metrics.cell_size.height as usize;
let cols = (self.dimensions.pixel_width as usize + 1)
/ self.render_metrics.cell_size.width as usize;
let size = portable_pty::PtySize { let size = portable_pty::PtySize {
rows: rows as u16, rows: rows as u16,
@ -645,39 +664,18 @@ impl TermWindow {
if dimensions.dpi != self.dimensions.dpi || font_scale != self.fonts.get_font_scale() { if dimensions.dpi != self.dimensions.dpi || font_scale != self.fonts.get_font_scale() {
self.fonts self.fonts
.change_scaling(font_scale, dimensions.dpi as f64 / 96.); .change_scaling(font_scale, dimensions.dpi as f64 / 96.);
let metrics = self self.render_metrics = RenderMetrics::new(&self.fonts);
.fonts
.default_font_metrics()
.expect("failed to get font metrics!?");
let (cell_height, cell_width) = (
metrics.cell_height.ceil() as usize,
metrics.cell_width.ceil() as usize,
);
let atlas_size = self.glyph_cache.borrow().atlas.size(); let atlas_size = self.glyph_cache.borrow().atlas.size();
self.recreate_texture_atlas(atlas_size) self.recreate_texture_atlas(atlas_size)
.expect("failed to recreate atlas"); .expect("failed to recreate atlas");
let descender_row = (cell_height as f64 + metrics.descender) as isize;
let descender_plus_one = (1 + descender_row).min(cell_height as isize - 1);
let descender_plus_two = (2 + descender_row).min(cell_height as isize - 1);
let strike_row = descender_row / 2;
self.descender = metrics.descender;
self.descender_row = descender_row;
self.descender_plus_one = descender_plus_one;
self.descender_plus_two = descender_plus_two;
self.strike_row = strike_row;
self.cell_size = Size::new(cell_width as isize, cell_height as isize);
} }
self.dimensions = dimensions; self.dimensions = dimensions;
let size = portable_pty::PtySize { let size = portable_pty::PtySize {
rows: dimensions.pixel_height as u16 / self.cell_size.height as u16, rows: dimensions.pixel_height as u16 / self.render_metrics.cell_size.height as u16,
cols: dimensions.pixel_width as u16 / self.cell_size.width as u16, cols: dimensions.pixel_width as u16 / self.render_metrics.cell_size.width as u16,
pixel_height: dimensions.pixel_height as u16, pixel_height: dimensions.pixel_height as u16,
pixel_width: dimensions.pixel_width as u16, pixel_width: dimensions.pixel_width as u16,
}; };
@ -728,7 +726,7 @@ impl TermWindow {
// Fill any marginal area below the last row // Fill any marginal area below the last row
let (num_rows, _num_cols) = term.physical_dimensions(); let (num_rows, _num_cols) = term.physical_dimensions();
let pixel_height_of_cells = num_rows * self.cell_size.height as usize; let pixel_height_of_cells = num_rows * self.render_metrics.cell_size.height as usize;
ctx.clear_rect( ctx.clear_rect(
Rect::new( Rect::new(
Point::new(0, pixel_height_of_cells as isize), Point::new(0, pixel_height_of_cells as isize),
@ -816,7 +814,8 @@ impl TermWindow {
let glyph = self.glyph_cache.borrow_mut().cached_glyph(info, style)?; let glyph = self.glyph_cache.borrow_mut().cached_glyph(info, style)?;
let left = (glyph.x_offset + glyph.bearing_x) as f32; let left = (glyph.x_offset + glyph.bearing_x) as f32;
let top = ((self.cell_size.height as f64 + self.descender) let top = ((self.render_metrics.cell_size.height as f64
+ self.render_metrics.descender)
- (glyph.y_offset + glyph.bearing_y)) as f32; - (glyph.y_offset + glyph.bearing_y)) as f32;
// underline and strikethrough // underline and strikethrough
@ -854,10 +853,10 @@ impl TermWindow {
let cell_rect = Rect::new( let cell_rect = Rect::new(
Point::new( Point::new(
cell_idx as isize * self.cell_size.width, cell_idx as isize * self.render_metrics.cell_size.width,
self.cell_size.height * line_idx as isize, self.render_metrics.cell_size.height * line_idx as isize,
), ),
self.cell_size, self.render_metrics.cell_size,
); );
ctx.clear_rect(cell_rect, bg_color); ctx.clear_rect(cell_rect, bg_color);
@ -866,11 +865,11 @@ impl TermWindow {
ctx.draw_line( ctx.draw_line(
Point::new( Point::new(
cell_rect.origin.x, cell_rect.origin.x,
cell_rect.origin.y + self.descender_plus_one, cell_rect.origin.y + self.render_metrics.descender_plus_one,
), ),
Point::new( Point::new(
cell_rect.origin.x + self.cell_size.width, cell_rect.origin.x + self.render_metrics.cell_size.width,
cell_rect.origin.y + self.descender_plus_one, cell_rect.origin.y + self.render_metrics.descender_plus_one,
), ),
glyph_color, glyph_color,
Operator::Over, Operator::Over,
@ -880,11 +879,11 @@ impl TermWindow {
ctx.draw_line( ctx.draw_line(
Point::new( Point::new(
cell_rect.origin.x, cell_rect.origin.x,
cell_rect.origin.y + self.descender_row, cell_rect.origin.y + self.render_metrics.descender_row,
), ),
Point::new( Point::new(
cell_rect.origin.x + self.cell_size.width, cell_rect.origin.x + self.render_metrics.cell_size.width,
cell_rect.origin.y + self.descender_row, cell_rect.origin.y + self.render_metrics.descender_row,
), ),
glyph_color, glyph_color,
Operator::Over, Operator::Over,
@ -892,11 +891,11 @@ impl TermWindow {
ctx.draw_line( ctx.draw_line(
Point::new( Point::new(
cell_rect.origin.x, cell_rect.origin.x,
cell_rect.origin.y + self.descender_plus_two, cell_rect.origin.y + self.render_metrics.descender_plus_two,
), ),
Point::new( Point::new(
cell_rect.origin.x + self.cell_size.width, cell_rect.origin.x + self.render_metrics.cell_size.width,
cell_rect.origin.y + self.descender_plus_two, cell_rect.origin.y + self.render_metrics.descender_plus_two,
), ),
glyph_color, glyph_color,
Operator::Over, Operator::Over,
@ -906,10 +905,13 @@ impl TermWindow {
} }
if attrs.strikethrough() { if attrs.strikethrough() {
ctx.draw_line( ctx.draw_line(
Point::new(cell_rect.origin.x, cell_rect.origin.y + self.strike_row),
Point::new( Point::new(
cell_rect.origin.x + self.cell_size.width, cell_rect.origin.x,
cell_rect.origin.y + self.strike_row, cell_rect.origin.y + self.render_metrics.strike_row,
),
Point::new(
cell_rect.origin.x + self.render_metrics.cell_size.width,
cell_rect.origin.y + self.render_metrics.strike_row,
), ),
glyph_color, glyph_color,
Operator::Over, Operator::Over,
@ -920,7 +922,7 @@ impl TermWindow {
let slice = SpriteSlice { let slice = SpriteSlice {
cell_idx: glyph_idx, cell_idx: glyph_idx,
num_cells: info.num_cells as usize, num_cells: info.num_cells as usize,
cell_width: self.cell_size.width as usize, cell_width: self.render_metrics.cell_size.width as usize,
scale: glyph.scale as f32, scale: glyph.scale as f32,
left_offset: left, left_offset: left,
}; };
@ -970,25 +972,25 @@ impl TermWindow {
let cell_rect = Rect::new( let cell_rect = Rect::new(
Point::new( Point::new(
cell_idx as isize * self.cell_size.width, cell_idx as isize * self.render_metrics.cell_size.width,
self.cell_size.height * line_idx as isize, self.render_metrics.cell_size.height * line_idx as isize,
), ),
self.cell_size, self.render_metrics.cell_size,
); );
ctx.clear_rect(cell_rect, bg_color); ctx.clear_rect(cell_rect, bg_color);
} }
// Fill any marginal area to the right of the last cell // Fill any marginal area to the right of the last cell
let pixel_width_of_cells = num_cols * self.cell_size.width as usize; let pixel_width_of_cells = num_cols * self.render_metrics.cell_size.width as usize;
ctx.clear_rect( ctx.clear_rect(
Rect::new( Rect::new(
Point::new( Point::new(
pixel_width_of_cells as isize, pixel_width_of_cells as isize,
self.cell_size.height * line_idx as isize, self.render_metrics.cell_size.height * line_idx as isize,
), ),
Size::new( Size::new(
(self.dimensions.pixel_width - pixel_width_of_cells) as isize, (self.dimensions.pixel_width - pixel_width_of_cells) as isize,
self.cell_size.height, self.render_metrics.cell_size.height,
), ),
), ),
rgbcolor_to_window_color(palette.background), rgbcolor_to_window_color(palette.background),