// TortoiseMerge - a Diff/Patch program

// Copyright (C) 2006, 2009-2010, 2014-2015, 2017-2018, 2020-2021 - TortoiseSVN

// 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,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
#include "stdafx.h"
#include "Settings.h"
#include "SetMainPage.h"
#include "SetColorPage.h"
#include "Theme.h"

#define BOTTOMMARG 32

int CALLBACK PropSheetProc(HWND /*hWndDlg*/, UINT uMsg, LPARAM lParam)
{
    switch (uMsg)
    {
        case PSCB_PRECREATE:
        {
            LPDLGTEMPLATE   pResource = reinterpret_cast<LPDLGTEMPLATE>(lParam);
            CDialogTemplate dlgTemplate(pResource);
            dlgTemplate.SetFont(L"Segoe UI", 9);
            memmove(reinterpret_cast<void*>(lParam), dlgTemplate.m_hTemplate, dlgTemplate.m_dwTemplateSize);
        }
        break;
    }
    return 0;
}

IMPLEMENT_DYNAMIC(CSettings, CPropertySheet)
CSettings::CSettings(UINT nIDCaption, CWnd* pParentWnd, UINT iSelectPage)
    : CPropertySheet(nIDCaption, pParentWnd, iSelectPage)
    , m_pMainPage(nullptr)
    , m_pColorPage(nullptr)
    , m_themeCallbackId(-1)
{
}

CSettings::CSettings(LPCWSTR pszCaption, CWnd* pParentWnd, UINT iSelectPage)
    : CPropertySheet(pszCaption, pParentWnd, iSelectPage)
    , m_pMainPage(nullptr)
    , m_pColorPage(nullptr)
{
    AddPropPages();
}

CSettings::~CSettings()
{
    CTheme::Instance().RemoveRegisteredCallback(m_themeCallbackId);
    RemovePropPages();
}

void CSettings::AddPropPages()
{
    m_pMainPage  = new CSetMainPage();
    m_pColorPage = new CSetColorPage();

    AddPage(m_pMainPage);
    AddPage(m_pColorPage);

    // remove the "apply" button: changes show only after the settings dialog
    // is closed, so the OK button is enough and the "apply" button only
    // confuses users.
    m_psh.dwFlags |= PSH_NOAPPLYNOW;
    m_psh.pfnCallback = PropSheetProc;
    m_psh.dwFlags |= PSH_USECALLBACK;
}

void CSettings::RemovePropPages()
{
    delete m_pMainPage;
    m_pMainPage = nullptr;
    delete m_pColorPage;
    m_pColorPage = nullptr;
}

void CSettings::SaveData() const
{
    m_pMainPage->SaveData();
    m_pColorPage->SaveData();
}

BOOL CSettings::IsReloadNeeded() const
{
    BOOL bReload = FALSE;
    bReload      = (m_pMainPage->m_bReloadNeeded || bReload);
    bReload      = (m_pColorPage->m_bReloadNeeded || bReload);
    return bReload;
}

bool CSettings::IsDarkMode() const
{
    return (m_pColorPage->m_isDarkMode);
}

BEGIN_MESSAGE_MAP(CSettings, CPropertySheet)
    ON_WM_ERASEBKGND()
END_MESSAGE_MAP()

// CSettings message handlers

BOOL CSettings::OnInitDialog()
{
    BOOL    bResult = CPropertySheet::OnInitDialog();
    MARGINS margs;
    margs.cxLeftWidth    = 0;
    margs.cyTopHeight    = 0;
    margs.cxRightWidth   = 0;
    margs.cyBottomHeight = BOTTOMMARG;

    if (m_aeroControls.AeroDialogsEnabled())
    {
        DwmExtendFrameIntoClientArea(m_hWnd, &margs);
        m_aeroControls.SubclassOkCancelHelp(this);
        m_aeroControls.SubclassControl(this, ID_APPLY_NOW);
    }

    m_themeCallbackId = CTheme::Instance().RegisterThemeChangeCallback(
        [this]() {
            CTheme::Instance().SetThemeForDialog(GetSafeHwnd(), CTheme::Instance().IsDarkTheme());
        });

    CTheme::Instance().SetThemeForDialog(GetSafeHwnd(), CTheme::Instance().IsDarkTheme());

    return bResult;
}

BOOL CSettings::OnEraseBkgnd(CDC* pDC)
{
    CPropertySheet::OnEraseBkgnd(pDC);

    if (m_aeroControls.AeroDialogsEnabled())
    {
        // draw the frame margins in black
        RECT rc;
        GetClientRect(&rc);
        pDC->FillSolidRect(rc.left, rc.bottom - BOTTOMMARG, rc.right - rc.left, BOTTOMMARG, RGB(0, 0, 0));
    }
    return TRUE;
}