dxutgui.cpp

游戏编程精粹6的光盘源代码

    DXUTTextureNode* pTextureNode = GetTexture( pElement->iTexture );
    if( pTextureNode == NULL )
        return E_FAIL;
    
    float fScaleX = (float) RectWidth( rcScreen ) / RectWidth( rcTexture );
    float fScaleY = (float) RectHeight( rcScreen ) / RectHeight( rcTexture );

    D3DXMATRIXA16 matTransform;
    D3DXMatrixScaling( &matTransform, fScaleX, fScaleY, 1.0f );

    m_pManager->m_pSprite->SetTransform( &matTransform );
    
    D3DXVECTOR3 vPos( (float)rcScreen.left, (float)rcScreen.top, 0.0f );

    vPos.x /= fScaleX;
    vPos.y /= fScaleY;

    return m_pManager->m_pSprite->Draw( pTextureNode->pTexture, &rcTexture, NULL, &vPos, pElement->TextureColor.Current );
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialog::CalcTextRect( LPCWSTR strText, CDXUTElement* pElement, RECT* prcDest, int nCount )
{
    HRESULT hr = S_OK;

    DXUTFontNode* pFontNode = GetFont( pElement->iFont );
    if( pFontNode == NULL )
        return E_FAIL;

    DWORD dwTextFormat = pElement->dwTextFormat | DT_CALCRECT;
    // Since we are only computing the rectangle, we don't need a sprite.
    hr = pFontNode->pFont->DrawText( NULL, strText, nCount, prcDest, dwTextFormat, pElement->FontColor.Current );
    if( FAILED(hr) )
        return hr;

    return S_OK;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialog::DrawText( LPCWSTR strText, CDXUTElement* pElement, RECT* prcDest, bool bShadow, int nCount )
{
    HRESULT hr = S_OK;

    // No need to draw fully transparent layers
    if( pElement->FontColor.Current.a == 0 )
        return S_OK;

    RECT rcScreen = *prcDest;
    OffsetRect( &rcScreen, m_x, m_y );

    // If caption is enabled, offset the Y position by its height.
    if( m_bCaption )
        OffsetRect( &rcScreen, 0, m_nCaptionHeight );

    //debug
    //DrawRect( &rcScreen, D3DCOLOR_ARGB(100, 255, 0, 0) );

    D3DXMATRIXA16 matTransform;
    D3DXMatrixIdentity( &matTransform );
    m_pManager->m_pSprite->SetTransform( &matTransform );

    DXUTFontNode* pFontNode = GetFont( pElement->iFont );
    
    if( bShadow )
    {
        RECT rcShadow = rcScreen;
        OffsetRect( &rcShadow, 1, 1 );
        hr = pFontNode->pFont->DrawText( m_pManager->m_pSprite, strText, nCount, &rcShadow, pElement->dwTextFormat, D3DCOLOR_ARGB(DWORD(pElement->FontColor.Current.a * 255), 0, 0, 0) );
        if( FAILED(hr) )
            return hr;
    }

    hr = pFontNode->pFont->DrawText( m_pManager->m_pSprite, strText, nCount, &rcScreen, pElement->dwTextFormat, pElement->FontColor.Current );
    if( FAILED(hr) )
        return hr;

    return S_OK;
}


//--------------------------------------------------------------------------------------
void CDXUTDialog::SetBackgroundColors( D3DCOLOR colorTopLeft, D3DCOLOR colorTopRight, D3DCOLOR colorBottomLeft, D3DCOLOR colorBottomRight )
{
    m_colorTopLeft = colorTopLeft;
    m_colorTopRight = colorTopRight;
    m_colorBottomLeft = colorBottomLeft;
    m_colorBottomRight = colorBottomRight;
}


//--------------------------------------------------------------------------------------
void CDXUTDialog::SetNextDialog( CDXUTDialog* pNextDialog )
{ 
    if( pNextDialog == NULL )
        pNextDialog = this;
    
    m_pNextDialog = pNextDialog;
    if( pNextDialog )
        m_pNextDialog->m_pPrevDialog = this;
}


//--------------------------------------------------------------------------------------
void CDXUTDialog::ClearFocus()
{
    if( s_pControlFocus )
    {
        s_pControlFocus->OnFocusOut();
        s_pControlFocus = NULL;
    }

    ReleaseCapture();
}


//--------------------------------------------------------------------------------------
void CDXUTDialog::FocusDefaultControl()
{
    // Check for default control in this dialog
    for( int i=0; i < m_Controls.GetSize(); i++ )
    {
        CDXUTControl* pControl = m_Controls.GetAt( i );
        if( pControl->m_bIsDefault )
        {
            // Remove focus from the current control
            ClearFocus();

            // Give focus to the default control
            s_pControlFocus = pControl;
            s_pControlFocus->OnFocusIn();
            return;
        }
    }
}


//--------------------------------------------------------------------------------------
bool CDXUTDialog::OnCycleFocus( bool bForward )
{
    CDXUTControl *pControl = NULL;
    CDXUTDialog *pDialog = NULL; // pDialog and pLastDialog are used to track wrapping of
    CDXUTDialog *pLastDialog;    // focus from first control to last or vice versa.

    if( s_pControlFocus == NULL )
    {
        // If s_pControlFocus is NULL, we focus the first control of first dialog in
        // the case that bForward is true, and focus the last control of last dialog when
        // bForward is false.
        //
        if( bForward )
        {
            // Search for the first control from the start of the dialog
            // array.
            for( int d = 0; d < m_pManager->m_Dialogs.GetSize(); ++d )
            {
                pDialog = pLastDialog = m_pManager->m_Dialogs.GetAt(d);
                if( pDialog && pDialog->m_Controls.GetSize() > 0 )
                {
                    pControl = pDialog->m_Controls.GetAt(0);
                    break;
                }
            }

            if( !pDialog || !pControl )
            {
                // No dialog has been registered yet or no controls have been
                // added to the dialogs. Cannot proceed.
                return true;
            }
        }
        else
        {
            // Search for the first control from the end of the dialog
            // array.
            for( int d = m_pManager->m_Dialogs.GetSize() - 1; d >= 0; --d )
            {
                pDialog = pLastDialog = m_pManager->m_Dialogs.GetAt(d);
                if( pDialog && pDialog->m_Controls.GetSize() > 0 )
                {
                    pControl = pDialog->m_Controls.GetAt( pDialog->m_Controls.GetSize() - 1 );
                    break;
                }
            }

            if( !pDialog || !pControl )
            {
                // No dialog has been registered yet or no controls have been
                // added to the dialogs. Cannot proceed.
                return true;
            }
        }
    }
    else
    if( s_pControlFocus->m_pDialog != this )
    {
        // If a control belonging to another dialog has focus, let that other
        // dialog handle this event by returning false.
        //
        return false;
    }
    else
    {
        // Focused control belongs to this dialog. Cycle to the
        // next/previous control.
        pLastDialog = s_pControlFocus->m_pDialog;
        pControl = (bForward) ? GetNextControl( s_pControlFocus ) : GetPrevControl( s_pControlFocus );
        pDialog = pControl->m_pDialog;
    }

    for( int i=0; i < 0xffff; i++ )
    {
        // If we just wrapped from last control to first or vice versa,
        // set the focused control to NULL. This state, where no control
        // has focus, allows the camera to work.
        int nLastDialogIndex = m_pManager->m_Dialogs.IndexOf( pLastDialog );
        int nDialogIndex = m_pManager->m_Dialogs.IndexOf( pDialog );
        if( ( !bForward && nLastDialogIndex < nDialogIndex ) ||
            ( bForward && nDialogIndex < nLastDialogIndex ) )
        {
            if( s_pControlFocus )
                s_pControlFocus->OnFocusOut();
            s_pControlFocus = NULL;
            return true;
        }

        // If we've gone in a full circle then focus doesn't change
        if( pControl == s_pControlFocus )
            return true;

        // If the dialog accepts keybord input and the control can have focus then
        // move focus
        if( pControl->m_pDialog->m_bKeyboardInput && pControl->CanHaveFocus() )
        {
            if( s_pControlFocus )
                s_pControlFocus->OnFocusOut();
            s_pControlFocus = pControl;
            s_pControlFocus->OnFocusIn();
            return true;
        }

        pLastDialog = pDialog;
        pControl = (bForward) ? GetNextControl( pControl ) : GetPrevControl( pControl );
        pDialog = pControl->m_pDialog;
    }

    // If we reached this point, the chain of dialogs didn't form a complete loop
    DXTRACE_ERR( L"CDXUTDialog: Multiple dialogs are improperly chained together", E_FAIL );
    return false;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialogResourceManager::CreateFont( UINT iFont )
{
    HRESULT hr = S_OK;

    DXUTFontNode* pFontNode = m_FontCache.GetAt( iFont );

    SAFE_RELEASE( pFontNode->pFont );
    
    V_RETURN( D3DXCreateFont( m_pd3dDevice, pFontNode->nHeight, 0, pFontNode->nWeight, 1, FALSE, DEFAULT_CHARSET, 
                              OUT_DEFAULT_PRECIS, DEFAULT_QUALITY, DEFAULT_PITCH | FF_DONTCARE, 
                              pFontNode->strFace, &pFontNode->pFont ) );

    return S_OK;
}

//--------------------------------------------------------------------------------------
HRESULT CDXUTDialogResourceManager::CreateTexture( UINT iTexture )
{
    HRESULT hr = S_OK;

    DXUTTextureNode* pTextureNode = m_TextureCache.GetAt( iTexture );
    
    // Make sure there's a texture to create
    if( pTextureNode->strFilename[0] == 0 )
        return S_OK;
    
    // Find the texture on the hard drive
    WCHAR strPath[MAX_PATH];
    hr = DXUTFindDXSDKMediaFileCch( strPath, MAX_PATH, pTextureNode->strFilename );
    if( FAILED(hr) )
    {
        return DXTRACE_ERR( L"DXUTFindDXSDKMediaFileCch", hr );
    }

    // Create texture
    D3DXIMAGE_INFO info;
    hr =  D3DXCreateTextureFromFileEx( m_pd3dDevice, strPath, D3DX_DEFAULT, D3DX_DEFAULT, 
                                       1, 0, D3DFMT_UNKNOWN, D3DPOOL_MANAGED, 
                                       D3DX_DEFAULT, D3DX_DEFAULT, 0, 
                                       &info, NULL, &pTextureNode->pTexture );
    if( FAILED(hr) )
    {
        return DXTRACE_ERR( L"D3DXCreateTextureFromFileEx", hr );
    }

    // Store dimensions
    pTextureNode->dwWidth = info.Width;
    pTextureNode->dwHeight = info.Height;

    return S_OK;
}


//--------------------------------------------------------------------------------------
void CDXUTDialog::InitDefaultElements()
{
    SetTexture( 0, L"UI\\DXUTControls.dds" );
    SetFont( 0, L"Arial", 14, FW_NORMAL );
    
    CDXUTElement Element;
    RECT rcTexture;

    //-------------------------------------
    // Element for the caption
    //-------------------------------------
    m_CapElement.SetFont( 0 );
    SetRect( &rcTexture, 17, 269, 241, 287 );
    m_CapElement.SetTexture( 0, &rcTexture );
    m_CapElement.TextureColor.States[ DXUT_STATE_NORMAL ] = D3DCOLOR_ARGB(255, 255, 255, 255);
    m_CapElement.FontColor.States[ DXUT_STATE_NORMAL ] = D3DCOLOR_ARGB(255, 255, 255, 255);
    m_CapElement.SetFont( 0, D3DCOLOR_ARGB(255, 255, 255, 255), DT_LEFT | DT_VCENTER );
    // Pre-blend as we don't need to transition the state
    m_CapElement.TextureColor.Blend( DXUT_STATE_NORMAL, 10.0f );
    m_CapElement.FontColor.Blend( DXUT_STATE_NORMAL, 10.0f );

    //-------------------------------------
    // CDXUTStatic
    //-------------------------------------
    Element.SetFont( 0 );
    Element.FontColor.States[ DXUT_STATE_DISABLED ] = D3DCOLOR_ARGB( 200, 200, 200, 200 );

    // Assign the Element
    SetDefaultElement( DXUT_CONTROL_STATIC, 0, &Element );
    

    //-------------------------------------
    // CDXUTButton - Button
    //-------------------------------------
    SetRect( &rcTexture, 0, 0, 136, 54 );
    Element.SetTexture( 0, &rcTexture );
    Element.SetFont( 0 );
    Element.TextureColor.States[ DXUT_STATE_NORMAL ] = D3DCOLOR_ARGB(150, 255, 255, 255);
    Element.TextureColor.States[ DXUT_STATE_PRESSED ] = D3DCOLOR_ARGB(200, 255, 255, 255);
    Element.FontColor.States[ DXUT_STATE_MOUSEOVER ] = D3DCOLOR_ARGB(255, 0, 0, 0);
    
    // Assign the Element
    SetDefaultElement( DXUT_CONTROL_BUTTON, 0, &Element );
    

    //-------------------------------------
    // CDXUTButton - Fill layer
    //-------------------------------------
    SetRect( &rcTexture, 136, 0, 272, 54 );
    Element.SetTexture( 0, &rcTexture, D3DCOLOR_ARGB(0, 255, 255, 255) );
    Element.TextureColor.States[ DXUT_STATE_MOUSEOVER ] = D3DCOLOR_ARGB(160, 255, 255, 255);
    Element.TextureColor.States[ DXUT_STATE_PRESSED ] = D3DCOLOR_ARGB(60, 0, 0, 0);
    Element.TextureColor.States[ DXUT_STATE_FOCUS ] = D3DCOLOR_ARGB(30, 255, 255, 255);
    
    
    // Assign the Element
    SetDefaultElement( DXUT_CONTROL_BUTTON, 1, &Element );


    //-------------------------------------
    // CDXUTCheckBox - Box
    //-------------------------------------
    SetRect( &rcTexture, 0, 54, 27, 81 );
    Element.SetTexture( 0, &rcTexture );
    Element.SetFont( 0, D3DCOLOR_ARGB(255, 255, 255, 255), DT_LEFT | DT_VCENTER );
    Element.FontColor.States[ DXUT_STATE_DISABLED ] = D3DCOLOR_ARGB( 200, 200, 200, 200 );
    Element.TextureColor.States[ DXUT_STATE_NORMAL ] = D3DCOLOR_ARGB(150, 255, 255, 255);
    Element.TextureColor.States[ DXUT_STATE_FOCUS ] = D3DCOLOR_ARGB(200, 255, 255, 255);
    Element.TextureColor.States[ DXUT_STATE_PRESSED ] = D3DCOLOR_ARGB(255, 255, 255, 255);
    
    // Assign the Element
    SetDefaultElement( DXUT_CONTROL_CHECKBOX, 0, &Element );


    //-------------------------------------
    // CDXUTCheckBox - Check
    //-------------------------------------
    SetRect( &rcTexture, 27, 54, 54, 81 );
    Element.SetTexture( 0, &rcTexture );
    
    // Assign the Element
    SetDefaultElement( DXUT_CONTROL_CHECKBOX, 1, &Element );


    //-------------------------------------
    // CDXUTRadioButton - Box
    //-------------------------------------
    SetRect( &rcTexture, 54, 54, 81, 81 );
    Element.SetTexture( 0, &rcTexture );
    Element.SetFont( 0, D3DCOLOR_ARGB(255, 255, 255, 255), DT_LEFT | DT_VCENTER );
    Element.FontColor.States[ DXUT_STATE_DISABLED ] = D3DCOLOR_ARGB( 200, 200, 200, 200 );
    Element.TextureColor.States[ DXUT_STATE_NORMAL ]