Applied-Software/ghostty
5
0
Fork 0
mirror of https://github.com/ghostty-org/ghostty.git synced 2025-07-16 16:56:09 +03:00
Code Issues Packages Projects Releases Wiki Activity

metal: apply background opacity

Browse Source
This commit is contained in:
Mitchell Hashimoto
2023-07-03 19:38:33 -07:00
parent 017da411f8
commit 329385e353
1 changed files with 44 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
src/renderer/Metal.zig
View File

@ -944,30 +944,25 @@ pub fn updateCell(
fg: terminal.color.RGB, fg: terminal.color.RGB,
}; };
// The colors for the cell. // True if this cell is selected
const colors: BgFg = colors: {
// If we have a selection, then we need to check if this
// cell is selected.
// TODO(perf): we can check in advance if selection is in // TODO(perf): we can check in advance if selection is in
// our viewport at all and not run this on every point. // our viewport at all and not run this on every point.
var selection_res: ?BgFg = sel_colors: { const selected: bool = if (selection) |sel| selected: {
if (selection) |sel| {
const screen_point = (terminal.point.Viewport{ const screen_point = (terminal.point.Viewport{
.x = x, .x = x,
.y = y, .y = y,
}).toScreen(screen); }).toScreen(screen);
break :selected sel.contains(screen_point);
} else false;
// The colors for the cell.
const colors: BgFg = colors: {
// If we are selected, we our colors are just inverted fg/bg // If we are selected, we our colors are just inverted fg/bg
if (sel.contains(screen_point)) { var selection_res: ?BgFg = if (selected) .{
break :sel_colors BgFg{
.bg = self.config.selection_background orelse self.config.foreground, .bg = self.config.selection_background orelse self.config.foreground,
.fg = self.config.selection_foreground orelse self.config.background, .fg = self.config.selection_foreground orelse self.config.background,
}; } else null;
}
}
break :sel_colors null;
};
const res: BgFg = selection_res orelse if (!cell.attrs.inverse) .{ const res: BgFg = selection_res orelse if (!cell.attrs.inverse) .{
// In normal mode, background and fg match the cell. We // In normal mode, background and fg match the cell. We
@ -999,11 +994,37 @@ pub fn updateCell(
// If the cell has a background, we always draw it. // If the cell has a background, we always draw it.
if (colors.bg) |rgb| { if (colors.bg) |rgb| {
// Determine our background alpha. If we have transparency configured
// then this is dynamic depending on some situations. This is all
// in an attempt to make transparency look the best for various
// situations. See inline comments.
const bg_alpha: u8 = bg_alpha: {
if (self.config.background_opacity >= 1) break :bg_alpha alpha;
// If we're selected, we do not apply background opacity
if (selected) break :bg_alpha alpha;
// If we're reversed, do not apply background opacity
if (cell.attrs.inverse) break :bg_alpha alpha;
// If we have a background and its not the default background
// then we apply background opacity
if (cell.attrs.has_bg and !std.meta.eql(rgb, self.config.background)) {
break :bg_alpha alpha;
}
// We apply background opacity.
var bg_alpha: f64 = @floatFromInt(alpha);
bg_alpha *= self.config.background_opacity;
bg_alpha = @ceil(bg_alpha);
break :bg_alpha @intFromFloat(bg_alpha);
};
self.cells_bg.appendAssumeCapacity(.{ self.cells_bg.appendAssumeCapacity(.{
.mode = .bg, .mode = .bg,
.grid_pos = .{ @as(f32, @floatFromInt(x)), @as(f32, @floatFromInt(y)) }, .grid_pos = .{ @as(f32, @floatFromInt(x)), @as(f32, @floatFromInt(y)) },
.cell_width = cell.widthLegacy(), .cell_width = cell.widthLegacy(),
.color = .{ rgb.r, rgb.g, rgb.b, alpha }, .color = .{ rgb.r, rgb.g, rgb.b, bg_alpha },
}); });
} }