134 lines
3.7 KiB
C++
134 lines
3.7 KiB
C++
/*
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* theme.hpp
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* Montauk Toolkit theme tokens and color helpers
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* Copyright (c) 2026 Daniel Hammer
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*/
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#pragma once
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#include "gui/gui.hpp"
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#include "gui/mtk/settings.hpp"
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namespace gui::mtk {
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inline Color mix(Color base, Color tint, uint8_t tint_alpha) {
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auto blend = [tint_alpha](uint8_t a, uint8_t b) -> uint8_t {
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return (uint8_t)((((uint16_t)a * (255 - tint_alpha)) +
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((uint16_t)b * tint_alpha) + 127) / 255);
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};
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return Color::from_rgb(blend(base.r, tint.r),
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blend(base.g, tint.g),
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blend(base.b, tint.b));
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}
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inline Color lighten(Color c, uint8_t amount) {
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return mix(c, colors::WHITE, amount);
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}
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inline Color darken(Color c, uint8_t amount) {
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return mix(c, colors::BLACK, amount);
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}
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// Light selection/hover tint derived from the desktop accent. Returns the
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// canonical MENU_HOVER for the default blue accent so existing visuals are
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// preserved exactly; otherwise tints white with ~11% of the accent.
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inline Color accent_hover_tint(Color accent) {
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if (accent.r == colors::ACCENT.r && accent.g == colors::ACCENT.g
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&& accent.b == colors::ACCENT.b)
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return colors::MENU_HOVER;
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return mix(colors::WHITE, accent, 28);
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}
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struct Theme {
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Color window_bg;
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Color surface;
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Color surface_alt;
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Color surface_hover;
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Color border;
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Color text;
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Color text_muted;
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Color text_subtle;
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Color text_inverse;
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Color accent;
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Color accent_hover;
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Color accent_soft;
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Color accent_fg;
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Color selection;
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Color text_selection;
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Color danger;
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Color danger_hover;
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Color danger_soft;
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Color danger_fg;
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Color disabled_bg;
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Color disabled_fg;
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Color badge_admin_bg;
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Color badge_admin_fg;
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Color badge_user_bg;
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Color badge_user_fg;
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int radius_sm;
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int radius_md;
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int control_h;
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int tab_h;
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int gap_xs;
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int gap_sm;
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int gap_md;
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int gap_lg;
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};
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inline Theme make_theme(Color accent) {
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Theme theme {};
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theme.window_bg = colors::WINDOW_BG;
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theme.surface = Color::from_rgb(0xF5, 0xF5, 0xF5);
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theme.surface_alt = Color::from_rgb(0xF8, 0xF8, 0xF8);
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theme.surface_hover = mix(theme.surface, accent, 18);
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theme.border = colors::BORDER;
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theme.text = colors::TEXT_COLOR;
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theme.text_muted = Color::from_rgb(0x88, 0x88, 0x88);
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theme.text_subtle = Color::from_rgb(0x66, 0x66, 0x66);
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theme.text_inverse = colors::WHITE;
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theme.accent = accent;
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theme.accent_hover = darken(accent, 32);
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theme.accent_soft = lighten(accent, 214);
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theme.accent_fg = colors::WHITE;
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theme.selection = accent;
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theme.text_selection = Color::from_rgb(0xB0, 0xD0, 0xF0);
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theme.danger = Color::from_rgb(0xD0, 0x3E, 0x3E);
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theme.danger_hover = Color::from_rgb(0xDD, 0x44, 0x44);
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theme.danger_soft = Color::from_rgb(0xF7, 0xDF, 0xDF);
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theme.danger_fg = colors::WHITE;
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theme.disabled_bg = Color::from_rgb(0xCC, 0xCC, 0xCC);
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theme.disabled_fg = colors::WHITE;
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theme.badge_admin_bg = Color::from_rgb(0xE8, 0xD8, 0xF0);
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theme.badge_admin_fg = Color::from_rgb(0x7B, 0x3E, 0xB8);
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theme.badge_user_bg = Color::from_rgb(0xE0, 0xE8, 0xF0);
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theme.badge_user_fg = Color::from_rgb(0x36, 0x7B, 0xF0);
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theme.radius_sm = 3;
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theme.radius_md = 4;
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theme.control_h = 30;
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theme.tab_h = 36;
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theme.gap_xs = 2;
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theme.gap_sm = 6;
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theme.gap_md = 10;
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theme.gap_lg = 16;
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return theme;
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}
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// Zero-arg overload pulls the accent from the desktop appearance settings, so
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// MTK widgets (buttons, menus, etc.) automatically pick up the user's chosen
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// accent without each caller having to plumb it through.
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inline Theme make_theme() {
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return make_theme(load_system_accent());
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}
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} // namespace gui::mtk
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