ui/win32/window.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2024 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.
 */

#include "window.h"
#include <Windows.h>

#include "container.h"

#include "../common/object.h"


#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

#include "win32.h"

static W32WidgetClass w32_toplevel_widget_class = {
	.eventproc = ui_window_widget_event,
	.show = ui_window_widget_show,
	.enable = NULL,
	.get_preferred_size =  NULL,
	.destroy =  w32_widget_default_destroy
};

static HINSTANCE hInstance;

static const char *mainWindowClass = "UiMainWindow";

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
	W32Widget *widget = (W32Widget*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
	if (widget && widget->wclass->eventproc) {
		widget->wclass->eventproc(widget, hwnd, uMsg, wParam, lParam);
	}
    switch(uMsg) {
        case WM_DESTROY:
            PostQuitMessage(0);
            break;
        default:
            return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
    return 0;
}

void ui_window_init(void) {
	hInstance = GetModuleHandle(NULL);
	
	WNDCLASSEX wc = { sizeof(WNDCLASSEX) };
    wc.lpfnWndProc = WindowProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = mainWindowClass;
    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = GetSysColorBrush(COLOR_BTNFACE);

    if(!RegisterClassExA(&wc)) {
        MessageBox(NULL, "RegisterClassEx failed", "Error", MB_ICONERROR);
        exit(-1);
    }
}

static UiObject* create_window(const char *title, void *window_data, bool simple) {
    UiObject *obj = uic_object_new_toplevel();
    obj->window = window_data;

	HWND hwnd = CreateWindowExA(
			0,
			"UiMainWindow",
			title,
			WS_OVERLAPPEDWINDOW,
            CW_USEDEFAULT,
			CW_USEDEFAULT,
			800,
			600,
            NULL,
			NULL,
			hInstance,
			NULL);

    UpdateWindow(hwnd);

	UiContainerX *container = ui_box_container_create(obj, hwnd, UI_BOX_VERTICAL, 0, INSETS_ZERO);
	uic_object_push_container(obj, container);

	UiWindow *widget = w32_widget_create(&w32_toplevel_widget_class, hwnd, sizeof(UiWindow));
	widget->obj = obj;
	widget->container = (UiBoxContainer *)container;
	obj->widget = (W32Widget*)widget;
	obj->ref = 1;

	return obj;
}

UiObject *ui_window(const char *title, void *window_data) {
	return create_window(title, window_data, FALSE);
}


void ui_window_widget_event(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
	UiWindow *window = (UiWindow*)widget;
	switch (uMsg) {
		case WM_SIZE: {
			int width  = LOWORD(lParam);
			int height = HIWORD(lParam);
			ui_grid_layout(window->container->layout, width, height);
			break;
		}
	}
}

void ui_window_widget_show(W32Widget *w, BOOLEAN show) {
	ShowWindow(w->hwnd, show ? SW_SHOWNORMAL : SW_HIDE);
}