ui/ui/win32.h

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2025 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef UI_WIN32_H
#define UI_WIN32_H

#include <Windows.h>

#ifdef __cplusplus
extern "C" {
#endif

#define UIEXPORT __declspec(dllexport)

typedef struct W32WidgetClass W32WidgetClass;
typedef struct W32Widget W32Widget;
typedef struct W32Size W32Size;

typedef void (*W32LayoutFunc)(void *, int, int);

struct W32Size {
    int width;
    int height;
};

struct W32WidgetClass {
    int (*eventproc)(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
    void (*show)(W32Widget *widget, BOOLEAN show);
    void (*enable)(W32Widget *widget, BOOLEAN enable);
    W32Size (*get_preferred_size)(W32Widget *widget);
    void (*destroy)(W32Widget *widget);
};

struct W32Widget {
    W32WidgetClass *wclass;
    HWND hwnd;
    void *userdata;
    void (*layout)(void *layout, int width, int height);
    void *layoutmanager;
};

#ifdef __cplusplus
}
#endif

#endif /* UI_WIN32_H */