feat: rudimentary userspace desktop environment

2026-02-20 00:48:51 +01:00
parent 3753ebd4f4
commit 6eebc64863
27 changed files with 5027 additions and 9 deletions
@@ -0,0 +1,78 @@
+/*
+    * window.hpp
+    * ZenithOS window management types
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#pragma once
+#include "gui/gui.hpp"
+#include "gui/framebuffer.hpp"
+#include "gui/widgets.hpp"
+#include <Api/Syscall.hpp>
+
+namespace gui {
+
+enum WindowState { WIN_NORMAL, WIN_MINIMIZED, WIN_MAXIMIZED, WIN_CLOSED };
+
+static constexpr int TITLEBAR_HEIGHT = 30;
+static constexpr int BORDER_WIDTH = 1;
+static constexpr int SHADOW_SIZE = 3;
+static constexpr int BTN_RADIUS = 6;
+static constexpr int MAX_TITLE_LEN = 64;
+
+struct Window;
+using WindowDrawCallback  = void (*)(Window* win, Framebuffer& fb);
+using WindowMouseCallback = void (*)(Window* win, MouseEvent& ev);
+using WindowKeyCallback   = void (*)(Window* win, const Zenith::KeyEvent& key);
+using WindowCloseCallback = void (*)(Window* win);
+
+struct Window {
+    char title[MAX_TITLE_LEN];
+    Rect frame;
+    WindowState state;
+    int z_order;
+    bool focused;
+    bool dirty;
+
+    uint32_t* content;
+    int content_w, content_h;
+
+    bool dragging;
+    int drag_offset_x, drag_offset_y;
+
+    bool resizing;
+
+    Rect saved_frame;
+
+    WindowDrawCallback  on_draw;
+    WindowMouseCallback on_mouse;
+    WindowKeyCallback   on_key;
+    WindowCloseCallback on_close;
+    void* app_data;
+
+    Rect titlebar_rect() const {
+        return {frame.x, frame.y, frame.w, TITLEBAR_HEIGHT};
+    }
+
+    Rect content_rect() const {
+        return {frame.x + BORDER_WIDTH, frame.y + TITLEBAR_HEIGHT,
+                frame.w - 2 * BORDER_WIDTH, frame.h - TITLEBAR_HEIGHT - BORDER_WIDTH};
+    }
+
+    Rect close_btn_rect() const {
+        int by = frame.y + (TITLEBAR_HEIGHT - BTN_RADIUS * 2) / 2;
+        return {frame.x + 12, by, BTN_RADIUS * 2, BTN_RADIUS * 2};
+    }
+
+    Rect min_btn_rect() const {
+        int by = frame.y + (TITLEBAR_HEIGHT - BTN_RADIUS * 2) / 2;
+        return {frame.x + 12 + 22, by, BTN_RADIUS * 2, BTN_RADIUS * 2};
+    }
+
+    Rect max_btn_rect() const {
+        int by = frame.y + (TITLEBAR_HEIGHT - BTN_RADIUS * 2) / 2;
+        return {frame.x + 12 + 44, by, BTN_RADIUS * 2, BTN_RADIUS * 2};
+    }
+};
+
+} // namespace gui