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#ifndef RENDERTYPEWIN
#error Only for Windows
#endif

#include "duke3d.h"

#include "build.h"
#include "winlayer.h"
#include "compat.h"

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <windowsx.h>
#define _WIN32_IE 0x0300
#include <commctrl.h>
#include <stdio.h>

#include "startwin.game.h"

#define TAB_CONFIG 0
#define TAB_MESSAGES 1

static struct {
    int fullscreen;
    int xdim, ydim, bpp;
    int forcesetup;
    int usemouse, usejoy;
} settings;

static HWND startupdlg = NULL;
static HWND pages[2] = { NULL, NULL};
static int done = -1;

static void PopulateForm(void)
{
    int i,j;
    char buf[64];
    int mode;
    HWND hwnd;

    hwnd = GetDlgItem(pages[TAB_CONFIG], IDCVMODE);

    mode = checkvideomode(&settings.xdim, &settings.ydim, settings.bpp, settings.fullscreen, 1);
    if (mode < 0) {
        int cd[] = { 32, 24, 16, 15, 8, 0 };
        for (i=0; cd[i]; ) { if (cd[i] >= settings.bpp) i++; else break; }
        for ( ; cd[i]; i++) {
            mode = checkvideomode(&settings.xdim, &settings.ydim, cd[i], settings.fullscreen, 1);
            if (mode < 0) continue;
            settings.bpp = cd[i];
            break;
        }
    }

    Button_SetCheck(GetDlgItem(pages[TAB_CONFIG], IDCFULLSCREEN), (settings.fullscreen ? BST_CHECKED : BST_UNCHECKED));
    Button_SetCheck(GetDlgItem(pages[TAB_CONFIG], IDCALWAYSSHOW), (settings.forcesetup ? BST_CHECKED : BST_UNCHECKED));

    ComboBox_ResetContent(hwnd);
    for (i=0; i<validmodecnt; i++) {
        if (validmode[i].fs != settings.fullscreen) continue;

        // all modes get added to the 3D mode list
        Bsprintf(buf, "%ld x %ld %dbpp", validmode[i].xdim, validmode[i].ydim, validmode[i].bpp);
        j = ComboBox_AddString(hwnd, buf);
        ComboBox_SetItemData(hwnd, j, i);
        if (i == mode) ComboBox_SetCurSel(hwnd, j);
    }

    Button_SetCheck(GetDlgItem(pages[TAB_CONFIG], IDCINPUTMOUSE), (settings.usemouse ? BST_CHECKED : BST_UNCHECKED));
    Button_SetCheck(GetDlgItem(pages[TAB_CONFIG], IDCINPUTJOY), (settings.usejoy ? BST_CHECKED : BST_UNCHECKED));
}

static INT_PTR CALLBACK ConfigPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch (uMsg) {
    case WM_COMMAND:
        switch (LOWORD(wParam)) {
        case IDCFULLSCREEN:
            settings.fullscreen = !settings.fullscreen;
            PopulateForm();
            return TRUE;
        case IDCVMODE:
            if (HIWORD(wParam) == CBN_SELCHANGE) {
                int i;
                i = ComboBox_GetCurSel((HWND)lParam);
                if (i != CB_ERR) i = ComboBox_GetItemData((HWND)lParam, i);
                if (i != CB_ERR) {
                    settings.xdim = validmode[i].xdim;
                    settings.ydim = validmode[i].ydim;
                    settings.bpp  = validmode[i].bpp;
                }
            }
            return TRUE;
        case IDCALWAYSSHOW:
            settings.forcesetup = IsDlgButtonChecked(hwndDlg, IDCALWAYSSHOW) == BST_CHECKED;
            return TRUE;
        case IDCINPUTMOUSE:
            settings.usemouse = IsDlgButtonChecked(hwndDlg, IDCINPUTMOUSE) == BST_CHECKED;
            return TRUE;
        case IDCINPUTJOY:
            settings.usejoy = IsDlgButtonChecked(hwndDlg, IDCINPUTJOY) == BST_CHECKED;
            return TRUE;
        default: break;
        }
        break;
    default: break;
    }
    return FALSE;
}



static void SetPage(int n)
{
    HWND tab;
    int cur;
    tab = GetDlgItem(startupdlg, WIN_STARTWIN_TABCTL);
    cur = (int)SendMessage(tab, TCM_GETCURSEL,0,0);
    ShowWindow(pages[cur],SW_HIDE);
    SendMessage(tab, TCM_SETCURSEL, n, 0);
    ShowWindow(pages[n],SW_SHOW);
}

static void EnableConfig(int n)
{
    EnableWindow(GetDlgItem(startupdlg, WIN_STARTWIN_CANCEL), n);
    EnableWindow(GetDlgItem(startupdlg, WIN_STARTWIN_START), n);
    EnableWindow(GetDlgItem(pages[TAB_CONFIG], IDCFULLSCREEN), n);
    EnableWindow(GetDlgItem(pages[TAB_CONFIG], IDCVMODE), n);
    EnableWindow(GetDlgItem(pages[TAB_CONFIG], IDCINPUTMOUSE), n);
    EnableWindow(GetDlgItem(pages[TAB_CONFIG], IDCINPUTJOY), n);
}

static INT_PTR CALLBACK startup_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    static HBITMAP hbmp = NULL;
    HDC hdc;

    switch (uMsg) {
    case WM_INITDIALOG: {
            HWND hwnd;
            RECT r, rdlg, chrome, rtab, rcancel, rstart;
            int xoffset = 0, yoffset = 0;

            // Fetch the positions (in screen coordinates) of all the windows we need to tweak
            ZeroMemory(&chrome, sizeof(chrome));
            AdjustWindowRect(&chrome, GetWindowLong(hwndDlg, GWL_STYLE), FALSE);
            GetWindowRect(hwndDlg, &rdlg);
            GetWindowRect(GetDlgItem(hwndDlg, WIN_STARTWIN_TABCTL), &rtab);
            GetWindowRect(GetDlgItem(hwndDlg, WIN_STARTWIN_CANCEL), &rcancel);
            GetWindowRect(GetDlgItem(hwndDlg, WIN_STARTWIN_START), &rstart);

            // Knock off the non-client area of the main dialogue to give just the client area
            rdlg.left -= chrome.left; rdlg.top -= chrome.top;
            rdlg.right -= chrome.right; rdlg.bottom -= chrome.bottom;

            // Translate them to client-relative coordinates wrt the main dialogue window
            rtab.right -= rtab.left - 1; rtab.bottom -= rtab.top - 1;
            rtab.left  -= rdlg.left; rtab.top -= rdlg.top;

            rcancel.right -= rcancel.left - 1; rcancel.bottom -= rcancel.top - 1;
            rcancel.left -= rdlg.left; rcancel.top -= rdlg.top;

            rstart.right -= rstart.left - 1; rstart.bottom -= rstart.top - 1;
            rstart.left -= rdlg.left; rstart.top -= rdlg.top;

            // And then convert the main dialogue coordinates to just width/length
            rdlg.right -= rdlg.left - 1; rdlg.bottom -= rdlg.top - 1;
            rdlg.left = 0; rdlg.top = 0;

            // Load the bitmap into the bitmap control and fetch its dimensions
            hbmp = LoadBitmap((HINSTANCE)win_gethinstance(), MAKEINTRESOURCE(RSRC_BMP));
            hwnd = GetDlgItem(hwndDlg,WIN_STARTWIN_BITMAP);
            SendMessage(hwnd, STM_SETIMAGE, IMAGE_BITMAP, (LPARAM)hbmp);
            GetClientRect(hwnd, &r);
            xoffset = r.right;
            yoffset = r.bottom - rdlg.bottom;

            // Shift and resize the controls that require it
            rtab.left += xoffset; rtab.bottom += yoffset;
            rcancel.left += xoffset; rcancel.top += yoffset;
            rstart.left += xoffset; rstart.top += yoffset;
            rdlg.right += xoffset;
            rdlg.bottom += yoffset;

            // Move the controls to their new positions
            MoveWindow(GetDlgItem(hwndDlg, WIN_STARTWIN_TABCTL), rtab.left, rtab.top, rtab.right, rtab.bottom, FALSE);
            MoveWindow(GetDlgItem(hwndDlg, WIN_STARTWIN_CANCEL), rcancel.left, rcancel.top, rcancel.right, rcancel.bottom, FALSE);
            MoveWindow(GetDlgItem(hwndDlg, WIN_STARTWIN_START), rstart.left, rstart.top, rstart.right, rstart.bottom, FALSE);

            // Move the main dialogue to the centre of the screen
            hdc = GetDC(NULL);
            rdlg.left = (GetDeviceCaps(hdc, HORZRES) - rdlg.right) / 2;
            rdlg.top = (GetDeviceCaps(hdc, VERTRES) - rdlg.bottom) / 2;
            ReleaseDC(NULL, hdc);
            MoveWindow(hwndDlg, rdlg.left + chrome.left, rdlg.top + chrome.left,
                       rdlg.right + (-chrome.left+chrome.right), rdlg.bottom + (-chrome.top+chrome.bottom), TRUE);

            // Add tabs to the tab control
            {
                TCITEM tab;

                hwnd = GetDlgItem(hwndDlg, WIN_STARTWIN_TABCTL);

                ZeroMemory(&tab, sizeof(tab));
                tab.mask = TCIF_TEXT;
                tab.pszText = TEXT("Configuration");
                SendMessage(hwnd, TCM_INSERTITEM, (WPARAM)0, (LPARAM)&tab);
                tab.mask = TCIF_TEXT;
                tab.pszText = TEXT("Messages");
                SendMessage(hwnd, TCM_INSERTITEM, (WPARAM)1, (LPARAM)&tab);

                // Work out the position and size of the area inside the tab control for the pages
                ZeroMemory(&r, sizeof(r));
                GetClientRect(hwnd, &r);
                SendMessage(hwnd, TCM_ADJUSTRECT, FALSE, (LPARAM)&r);
                r.right -= r.left-1;
                r.bottom -= r.top-1;
                r.top += rtab.top;
                r.left += rtab.left;

                // Create the pages and position them in the tab control, but hide them
                pages[TAB_CONFIG] = CreateDialog((HINSTANCE)win_gethinstance(),
                                                 MAKEINTRESOURCE(WIN_STARTWINPAGE_CONFIG), hwndDlg, ConfigPageProc);
                pages[TAB_MESSAGES] = GetDlgItem(hwndDlg, WIN_STARTWIN_MESSAGES);
                SetWindowPos(pages[TAB_CONFIG], hwnd,r.left,r.top,r.right,r.bottom,SWP_HIDEWINDOW);
                SetWindowPos(pages[TAB_MESSAGES], hwnd,r.left,r.top,r.right,r.bottom,SWP_HIDEWINDOW);

                // Tell the editfield acting as the console to exclude the width of the scrollbar
                GetClientRect(pages[TAB_MESSAGES],&r);
                r.right -= GetSystemMetrics(SM_CXVSCROLL)+4;
                r.left = r.top = 0;
                SendMessage(pages[TAB_MESSAGES], EM_SETRECTNP,0,(LPARAM)&r);

                SetFocus(GetDlgItem(hwndDlg, WIN_STARTWIN_START));
            }
            return FALSE;
        }

    case WM_NOTIFY: {
            LPNMHDR nmhdr = (LPNMHDR)lParam;
            int cur;
            if (nmhdr->idFrom != WIN_STARTWIN_TABCTL) break;
            cur = (int)SendMessage(nmhdr->hwndFrom, TCM_GETCURSEL,0,0);
            switch (nmhdr->code) {
            case TCN_SELCHANGING: {
                    if (cur < 0 || !pages[cur]) break;
                    ShowWindow(pages[cur],SW_HIDE);
                    return TRUE;
                }
            case TCN_SELCHANGE: {
                    if (cur < 0 || !pages[cur]) break;
                    ShowWindow(pages[cur],SW_SHOW);
                    return TRUE;
                }
            }
            break;
        }

    case WM_CLOSE:
        done = 0;
        return TRUE;

    case WM_DESTROY:
        if (hbmp) {
            DeleteObject(hbmp);
            hbmp = NULL;
        }

        if (pages[TAB_CONFIG]) {
            DestroyWindow(pages[TAB_CONFIG]);
            pages[TAB_CONFIG] = NULL;
        }

        startupdlg = NULL;
        return TRUE;

    case WM_COMMAND:
        switch (LOWORD(wParam)) {
        case WIN_STARTWIN_CANCEL: done = 0; return TRUE;
        case WIN_STARTWIN_START: done = 1; return TRUE;
        }
        return FALSE;

    case WM_CTLCOLORSTATIC:
        if ((HWND)lParam == pages[TAB_MESSAGES])
            return (BOOL)GetSysColorBrush(COLOR_WINDOW);
        break;

    default: break;
    }

    return FALSE;
}


int startwin_open(void)
{
    INITCOMMONCONTROLSEX icc;
    if (startupdlg) return 1;
    icc.dwSize = sizeof(icc);
    icc.dwICC = ICC_TAB_CLASSES;
    InitCommonControlsEx(&icc);
    startupdlg = CreateDialog((HINSTANCE)win_gethinstance(), MAKEINTRESOURCE(WIN_STARTWIN), NULL, startup_dlgproc);
    if (startupdlg) {
        SetPage(TAB_MESSAGES);
        EnableConfig(0);
        return 0;
    }
    return -1;
}

int startwin_close(void)
{
    if (!startupdlg) return 1;
    DestroyWindow(startupdlg);
    startupdlg = NULL;
    return 0;
}

int startwin_puts(const char *buf)
{
    const char *p = NULL, *q = NULL;
    char workbuf[1024];
    static int newline = 0;
    int curlen, linesbefore, linesafter;
    HWND edctl;
    int vis;

    if (!startupdlg) return 1;

    edctl = pages[TAB_MESSAGES];
    if (!edctl) return -1;

    vis = ((int)SendMessage(GetDlgItem(startupdlg, WIN_STARTWIN_TABCTL), TCM_GETCURSEL,0,0) == TAB_MESSAGES);

    if (vis) SendMessage(edctl, WM_SETREDRAW, FALSE,0);
    curlen = SendMessage(edctl, WM_GETTEXTLENGTH, 0,0);
    SendMessage(edctl, EM_SETSEL, (WPARAM)curlen, (LPARAM)curlen);
    linesbefore = SendMessage(edctl, EM_GETLINECOUNT, 0,0);
    p = buf;
    while (*p) {
        if (newline) {
            SendMessage(edctl, EM_REPLACESEL, 0, (LPARAM)"\r\n");
            newline = 0;
        }
        q = p;
        while (*q && *q != '\n') q++;
        memcpy(workbuf, p, q-p);
        if (*q == '\n') {
            if (!q[1]) {
                newline = 1;
                workbuf[q-p] = 0;
            } else {
                workbuf[q-p] = '\r';
                workbuf[q-p+1] = '\n';
                workbuf[q-p+2] = 0;
            }
            p = q+1;
        } else {
            workbuf[q-p] = 0;
            p = q;
        }
        SendMessage(edctl, EM_REPLACESEL, 0, (LPARAM)workbuf);
    }
    linesafter = SendMessage(edctl, EM_GETLINECOUNT, 0,0);
    SendMessage(edctl, EM_LINESCROLL, 0, linesafter-linesbefore);
    if (vis) SendMessage(edctl, WM_SETREDRAW, TRUE,0);
    return 0;
}

int startwin_settitle(const char *str)
{
    if (!startupdlg) return 1;
    SetWindowText(startupdlg, str);
    return 0;
}

int startwin_idle(void *v)
{
    if (!startupdlg || !IsWindow(startupdlg)) return 0;
    if (IsDialogMessage(startupdlg, (MSG*)v)) return 1;
    return 0;
}

int startwin_run(void)
{
    MSG msg;
    if (!startupdlg) return 1;

    done = -1;

    SetPage(TAB_CONFIG);
    EnableConfig(1);

    settings.fullscreen = ScreenMode;
    settings.xdim = ScreenWidth;
    settings.ydim = ScreenHeight;
    settings.bpp = ScreenBPP;
    settings.forcesetup = ForceSetup;
    settings.usemouse = UseMouse;
    settings.usejoy = UseJoystick;
    PopulateForm();

    while (done < 0) {
        switch (GetMessage(&msg, NULL, 0,0)) {
        case 0: done = 1; break;
        case -1: return -1;
        default:
            if (IsWindow(startupdlg) && IsDialogMessage(startupdlg, &msg)) break;
            TranslateMessage(&msg);
            DispatchMessage(&msg);
            break;
        }
    }

    SetPage(TAB_MESSAGES);
    EnableConfig(0);
    if (done) {
        ScreenMode = settings.fullscreen;
        ScreenWidth = settings.xdim;
        ScreenHeight = settings.ydim;
        ScreenBPP = settings.bpp;
        ForceSetup = settings.forcesetup;
        UseMouse = settings.usemouse;
        UseJoystick = settings.usejoy;
    }

    return done;
}