reactos/modules/rosapps/templates/mdi/childwnd.c

/*
 *  ReactOS Application MDI Child Window
 *
 *  childwnd.c
 *
 *  Copyright (C) 2002  Robert Dickenson <robd@reactos.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifdef _MSC_VER
#include "stdafx.h"
#else
#define WIN32_LEAN_AND_MEAN     // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <commctrl.h>
#include <stdlib.h>
#include <malloc.h>
#include <memory.h>
#include <tchar.h>
#include <process.h>
#include <stdio.h>
#endif

#include <assert.h>
#define ASSERT assert

#include "main.h"
#include "childwnd.h"

////////////////////////////////////////////////////////////////////////////////

static void draw_splitbar(HWND hWnd, int x)
{
    RECT rt;
    HDC hdc = GetDC(hWnd);

    GetClientRect(hWnd, &rt);
    rt.left = x - SPLIT_WIDTH/2;
    rt.right = x + SPLIT_WIDTH/2+1;
    InvertRect(hdc, &rt);
    ReleaseDC(hWnd, hdc);
}

static void OnPaint(HWND hWnd, ChildWnd* pChildWnd)
{
    PAINTSTRUCT ps;
    RECT rt;
    GetClientRect(hWnd, &rt);
    BeginPaint(hWnd, &ps);

//    lastBrush = SelectObject(ps.hdc, (HBRUSH)GetStockObject(WHITE_BRUSH));
//    Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
//    SelectObject(ps.hdc, lastBrush);
//    rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
    FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
/*
    rt.left = pChildWnd->nSplitPos-SPLIT_WIDTH/2;
    rt.right = pChildWnd->nSplitPos+SPLIT_WIDTH/2+1;
    lastBrush = SelectBrush(ps.hdc, (HBRUSH)GetStockObject(COLOR_SPLITBAR));
    Rectangle(ps.hdc, rt.left, rt.top-1, rt.right, rt.bottom+1);
    SelectObject(ps.hdc, lastBrush);
#ifdef _NO_EXTENSIONS
    rt.top = rt.bottom - GetSystemMetrics(SM_CYHSCROLL);
    FillRect(ps.hdc, &rt, GetStockObject(BLACK_BRUSH));
#endif
 */
    EndPaint(hWnd, &ps);
}


static void OnSize(ChildWnd* pChildWnd, WPARAM wParam, LPARAM lParam)
{
    if (wParam != SIZE_MINIMIZED) {
        //resize_tree(pChildWnd, LOWORD(lParam), HIWORD(lParam));
    }
}

//
//  FUNCTION: ChildWndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the child windows.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK ChildWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static int last_split;
    ChildWnd* pChildWnd = (ChildWnd*)GetWindowLongPtr(hWnd, GWLP_USERDATA);
    ASSERT(pChildWnd);

    switch(message) {
    case WM_CREATE:
        return 0;

    case WM_MDIACTIVATE: // set an alternate menu here
        if (lParam == (LPARAM)hWnd) {
        } else {
        }
        DrawMenuBar(hFrameWnd);
        // return 0;
        break;

    case WM_PAINT:
        OnPaint(hWnd, pChildWnd);
        return 0;

    case WM_NCDESTROY:
        // SetWindowLongPtr(hWnd, GWLP_USERDATA, 0);
        break;

    case WM_SETCURSOR:
        if (LOWORD(lParam) == HTCLIENT) {
            POINT pt;
            GetCursorPos(&pt);
            ScreenToClient(hWnd, &pt);

            if (pt.x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && pt.x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
                SetCursor(LoadCursor(0, IDC_SIZEWE));
                return TRUE;
            }
        }
        //goto def;
        break;
    
    case WM_LBUTTONDOWN: {
        RECT rt;
        int x = LOWORD(lParam);
        GetClientRect(hWnd, &rt);
        if (x>=pChildWnd->nSplitPos-SPLIT_WIDTH/2 && x<pChildWnd->nSplitPos+SPLIT_WIDTH/2+1) {
            last_split = pChildWnd->nSplitPos;
#ifdef _NO_EXTENSIONS
            draw_splitbar(hWnd, last_split);
#endif
            SetCapture(hWnd);
    }
    break;}

    case WM_LBUTTONUP:
        if (GetCapture() == hWnd) {
#ifdef _NO_EXTENSIONS
            RECT rt;
            int x = LOWORD(lParam);
            draw_splitbar(hWnd, last_split);
            last_split = -1;
            GetClientRect(hWnd, &rt);
            pChildWnd->nSplitPos = x;
            //resize_tree(pChildWnd, rt.right, rt.bottom);
#endif
            ReleaseCapture();
    }
    break;

#ifdef _NO_EXTENSIONS
       case WM_CAPTURECHANGED:
        if (GetCapture()==hWnd && last_split>=0)
            draw_splitbar(hWnd, last_split);
        break;
#endif
    case WM_KEYDOWN:
        if (wParam == VK_ESCAPE)
            if (GetCapture() == hWnd) {
                RECT rt;
#ifdef _NO_EXTENSIONS
                draw_splitbar(hWnd, last_split);
#else
                pChildWnd->nSplitPos = last_split;
#endif
                GetClientRect(hWnd, &rt);
                //resize_tree(pChildWnd, rt.right, rt.bottom);
                last_split = -1;
                ReleaseCapture();
                   SetCursor(LoadCursor(0, IDC_ARROW));
        }
    break;

    case WM_MOUSEMOVE:
        if (GetCapture() == hWnd) {
            RECT rt;
               int x = LOWORD(lParam);
#ifdef _NO_EXTENSIONS
            HDC hdc = GetDC(hWnd);
            GetClientRect(hWnd, &rt);
            rt.left = last_split-SPLIT_WIDTH/2;
            rt.right = last_split+SPLIT_WIDTH/2+1;
               InvertRect(hdc, &rt);
            last_split = x;
            rt.left = x-SPLIT_WIDTH/2;
            rt.right = x+SPLIT_WIDTH/2+1;
            InvertRect(hdc, &rt);
            ReleaseDC(hWnd, hdc);
#else
               GetClientRect(hWnd, &rt);
            if (x>=0 && x<rt.right) {
                pChildWnd->nSplitPos = x;
                resize_tree(pChildWnd, rt.right, rt.bottom);
                   rt.left = x-SPLIT_WIDTH/2;
                   rt.right = x+SPLIT_WIDTH/2+1;
                InvalidateRect(hWnd, &rt, FALSE);
                UpdateWindow(pChildWnd->left.hWnd);
                UpdateWindow(hWnd);
                UpdateWindow(pChildWnd->right.hWnd);
            }
#endif
    }
    break;

#ifndef _NO_EXTENSIONS
       case WM_GETMINMAXINFO:
        DefMDIChildProc(hWnd, message, wParam, lParam);
        {LPMINMAXINFO lpmmi = (LPMINMAXINFO)lParam;
           lpmmi->ptMaxTrackSize.x <<= 1;//2*GetSystemMetrics(SM_CXSCREEN) / SM_CXVIRTUALSCREEN
        lpmmi->ptMaxTrackSize.y <<= 1;//2*GetSystemMetrics(SM_CYSCREEN) / SM_CYVIRTUALSCREEN
        break;}
#endif

       case WM_SETFOCUS:
        SetCurrentDirectory(pChildWnd->szPath);
        SetFocus(pChildWnd->nFocusPanel? pChildWnd->hRightWnd: pChildWnd->hLeftWnd);
        break;
/*
    case WM_COMMAND:
        pane = GetFocus()==pChildWnd->left.hWnd? &pChildWnd->left: &pChildWnd->right;
        switch(LOWORD(wParam)) {
        case ID_WINDOW_NEW_WINDOW:
            return 0;
        default:
            return pane_command(pane, LOWORD(wParam));
            break;
        }
        break;
 */
       case WM_SIZE:
        if (wParam != SIZE_MINIMIZED) {
            OnSize(pChildWnd, wParam, lParam);
        }
        // fall through
    // default: def:
        return DefMDIChildProc(hWnd, message, wParam, lParam);
    }
    return DefMDIChildProc(hWnd, message, wParam, lParam);
}