95 lines
3.9 KiB
C++
95 lines
3.9 KiB
C++
/*
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* gui.hpp
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* MontaukOS core GUI types and utilities
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* Copyright (c) 2025 Daniel Hammer
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*/
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#pragma once
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#include <cstdint>
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namespace gui {
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// 16.16 fixed-point type
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using fixed_t = int32_t;
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static constexpr int FIXED_SHIFT = 16;
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inline fixed_t int_to_fixed(int v) { return v << FIXED_SHIFT; }
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inline int fixed_to_int(fixed_t v) { return v >> FIXED_SHIFT; }
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inline fixed_t fixed_mul(fixed_t a, fixed_t b) { return (int32_t)(((int64_t)a * b) >> FIXED_SHIFT); }
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inline fixed_t fixed_div(fixed_t a, fixed_t b) { return (int32_t)(((int64_t)a << FIXED_SHIFT) / b); }
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inline fixed_t fixed_from_parts(int whole, int frac_num, int frac_den) {
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return int_to_fixed(whole) + (int32_t)(((int64_t)frac_num << FIXED_SHIFT) / frac_den);
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}
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struct Color {
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uint8_t r, g, b, a;
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static constexpr Color from_rgb(uint8_t r, uint8_t g, uint8_t b) { return {r, g, b, 255}; }
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static constexpr Color from_rgba(uint8_t r, uint8_t g, uint8_t b, uint8_t a) { return {r, g, b, a}; }
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static constexpr Color from_hex(uint32_t hex) {
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return {(uint8_t)((hex >> 16) & 0xFF), (uint8_t)((hex >> 8) & 0xFF), (uint8_t)(hex & 0xFF), 255};
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}
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constexpr uint32_t to_pixel() const { return ((uint32_t)a << 24) | ((uint32_t)r << 16) | ((uint32_t)g << 8) | b; }
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};
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// Named colors for the desktop theme
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namespace colors {
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static constexpr Color DESKTOP_BG = {0xE0, 0xE0, 0xE0, 0xFF};
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static constexpr Color PANEL_BG = {0x2B, 0x3E, 0x50, 0xFF};
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static constexpr Color TITLEBAR_BG = {0xF5, 0xF5, 0xF5, 0xFF};
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static constexpr Color WINDOW_BG = {0xFF, 0xFF, 0xFF, 0xFF};
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static constexpr Color BORDER = {0xCC, 0xCC, 0xCC, 0xFF};
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static constexpr Color TEXT_COLOR = {0x33, 0x33, 0x33, 0xFF};
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static constexpr Color PANEL_TEXT = {0xFF, 0xFF, 0xFF, 0xFF};
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static constexpr Color ACCENT = {0x36, 0x7B, 0xF0, 0xFF};
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static constexpr Color CLOSE_BTN = {0xFF, 0x5F, 0x57, 0xFF};
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static constexpr Color MAX_BTN = {0x28, 0xCA, 0x42, 0xFF};
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static constexpr Color MIN_BTN = {0xFF, 0xBD, 0x2E, 0xFF};
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static constexpr Color SHADOW = {0x00, 0x00, 0x00, 0x40};
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static constexpr Color TRANSPARENT = {0x00, 0x00, 0x00, 0x00};
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static constexpr Color BLACK = {0x00, 0x00, 0x00, 0xFF};
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static constexpr Color WHITE = {0xFF, 0xFF, 0xFF, 0xFF};
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static constexpr Color ICON_COLOR = {0x5C, 0x61, 0x6C, 0xFF};
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static constexpr Color SCROLLBAR_BG = {0xF0, 0xF0, 0xF0, 0xFF};
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static constexpr Color SCROLLBAR_FG = {0xC0, 0xC0, 0xC0, 0xFF};
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static constexpr Color MENU_BG = {0xFF, 0xFF, 0xFF, 0xFF};
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static constexpr Color MENU_HOVER = {0xE8, 0xF0, 0xFE, 0xFF};
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static constexpr Color TERM_BG = {0x2D, 0x2D, 0x2D, 0xFF};
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static constexpr Color TERM_FG = {0xCC, 0xCC, 0xCC, 0xFF};
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static constexpr Color PANEL_INDICATOR_ACTIVE = {0x45, 0x58, 0x6A, 0xFF};
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static constexpr Color PANEL_INDICATOR_INACTIVE = {0x35, 0x48, 0x5A, 0xFF};
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}
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struct Point {
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int x, y;
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};
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struct Rect {
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int x, y, w, h;
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bool contains(int px, int py) const {
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return px >= x && px < x + w && py >= y && py < y + h;
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}
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Rect intersect(const Rect& other) const {
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int rx = x > other.x ? x : other.x;
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int ry = y > other.y ? y : other.y;
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int rx2 = (x + w) < (other.x + other.w) ? (x + w) : (other.x + other.w);
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int ry2 = (y + h) < (other.y + other.h) ? (y + h) : (other.y + other.h);
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if (rx2 <= rx || ry2 <= ry) return {0, 0, 0, 0};
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return {rx, ry, rx2 - rx, ry2 - ry};
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}
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bool empty() const { return w <= 0 || h <= 0; }
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};
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// Simple inline utility functions
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inline int gui_min(int a, int b) { return a < b ? a : b; }
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inline int gui_max(int a, int b) { return a > b ? a : b; }
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inline int gui_abs(int a) { return a < 0 ? -a : a; }
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inline int gui_clamp(int v, int lo, int hi) { return v < lo ? lo : (v > hi ? hi : v); }
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} // namespace gui
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