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feat: support rendering theme colors with alpha components

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This commit is contained in:
CJ van den Berg 2024-11-04 22:16:04 +01:00
parent 3b28286c91
commit 0a43fa853f
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
9 changed files with 127 additions and 48 deletions
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61
src/renderer/vaxis/Cell.zig
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@ -1,32 +1,37 @@
const vaxis = @import("vaxis");
const Style = @import("theme").Style;
const Color = @import("theme").Color;
const FontStyle = @import("theme").FontStyle;
const color = @import("color");
const Cell = @This();
cell: vaxis.Cell = .{},
pub inline fn set_style(self: *Cell, style_: Style) void {
if (style_.fg) |fg| self.cell.style.fg = vaxis.Cell.Color.rgbFromUint(fg);
if (style_.bg) |bg| self.cell.style.bg = vaxis.Cell.Color.rgbFromUint(bg);
if (style_.fs) |fs| {
self.cell.style.ul = .default;
self.cell.style.ul_style = .off;
self.cell.style.bold = false;
self.cell.style.dim = false;
self.cell.style.italic = false;
self.cell.style.blink = false;
self.cell.style.reverse = false;
self.cell.style.invisible = false;
self.cell.style.strikethrough = false;
self.set_style_fg(style_);
self.set_style_bg(style_);
if (style_.fs) |fs| self.set_font_style(fs);
}
switch (fs) {
.normal => {},
.bold => self.cell.style.bold = true,
.italic => self.cell.style.italic = true,
.underline => self.cell.style.ul_style = .single,
.undercurl => self.cell.style.ul_style = .curly,
.strikethrough => self.cell.style.strikethrough = true,
}
pub inline fn set_font_style(self: *Cell, fs: FontStyle) void {
self.cell.style.ul = .default;
self.cell.style.ul_style = .off;
self.cell.style.bold = false;
self.cell.style.dim = false;
self.cell.style.italic = false;
self.cell.style.blink = false;
self.cell.style.reverse = false;
self.cell.style.invisible = false;
self.cell.style.strikethrough = false;
switch (fs) {
.normal => {},
.bold => self.cell.style.bold = true,
.italic => self.cell.style.italic = true,
.underline => self.cell.style.ul_style = .single,
.undercurl => self.cell.style.ul_style = .curly,
.strikethrough => self.cell.style.strikethrough = true,
}
}
@ -34,12 +39,24 @@ pub inline fn set_under_color(self: *Cell, arg_rgb: c_uint) void {
self.cell.style.ul = vaxis.Cell.Color.rgbFromUint(@intCast(arg_rgb));
}
inline fn apply_alpha(base_vaxis: vaxis.Cell.Color, over_theme: Color) vaxis.Cell.Color {
const alpha = over_theme.alpha;
return if (alpha == 0xFF or base_vaxis != .rgb)
vaxis.Cell.Color.rgbFromUint(over_theme.color)
else blk: {
const base = color.RGB.from_u8s(base_vaxis.rgb);
const over = color.RGB.from_u24(over_theme.color);
const result = color.apply_alpha(base, over, alpha);
break :blk .{ .rgb = result.to_u8s() };
};
}
pub inline fn set_style_fg(self: *Cell, style_: Style) void {
if (style_.fg) |fg| self.cell.style.fg = vaxis.Cell.Color.rgbFromUint(fg);
if (style_.fg) |fg| self.cell.style.fg = apply_alpha(self.cell.style.bg, fg);
}
pub inline fn set_style_bg(self: *Cell, style_: Style) void {
if (style_.bg) |bg| self.cell.style.bg = vaxis.Cell.Color.rgbFromUint(bg);
if (style_.bg) |bg| self.cell.style.bg = apply_alpha(self.cell.style.bg, bg);
}
pub inline fn set_fg_rgb(self: *Cell, arg_rgb: c_uint) !void {