dxutgui.cpp

DX例子中等难度的。全是新例子。VC2003

//--------------------------------------------------------------------------------------
void CDXUTDialog::ClearComboBox( int ID )
{
    CDXUTComboBox* pComboBox = GetComboBox( ID );
    if( pComboBox == NULL )
        return;

    pComboBox->RemoveAllItems();
}




//--------------------------------------------------------------------------------------
void CDXUTDialog::RequestFocus( CDXUTControl* pControl )
{
    if( s_pControlFocus == pControl )
        return;

    if( !pControl->CanHaveFocus() )
        return;

    if( s_pControlFocus )
        s_pControlFocus->OnFocusOut();

    pControl->OnFocusIn();
    s_pControlFocus = pControl;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialog::DrawRect( RECT* pRect, D3DCOLOR color )
{
    RECT rcScreen = *pRect;
    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 );

    DXUT_SCREEN_VERTEX vertices[4] =
    {
        (float) rcScreen.left -0.5f,  (float) rcScreen.top -0.5f,    0.5f, 1.0f, color, 0, 0,
        (float) rcScreen.right -0.5f, (float) rcScreen.top -0.5f,    0.5f, 1.0f, color, 0, 0, 
        (float) rcScreen.right -0.5f, (float) rcScreen.bottom -0.5f, 0.5f, 1.0f, color, 0, 0, 
        (float) rcScreen.left -0.5f,  (float) rcScreen.bottom -0.5f, 0.5f, 1.0f, color, 0, 0,
    };

    IDirect3DDevice9* pd3dDevice = m_pManager->GetD3DDevice();

    // Since we're doing our own drawing here we need to flush the sprites
    m_pManager->m_pSprite->Flush();
    IDirect3DVertexDeclaration9 *pDecl = NULL;
    pd3dDevice->GetVertexDeclaration( &pDecl );  // Preserve the sprite's current vertex decl
    pd3dDevice->SetFVF( DXUT_SCREEN_VERTEX::FVF );

    pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG2 );
    pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG2 );

    pd3dDevice->DrawPrimitiveUP( D3DPT_TRIANGLEFAN, 2, vertices, sizeof(DXUT_SCREEN_VERTEX) );

    pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
    pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );

    // Restore the vertex decl
    pd3dDevice->SetVertexDeclaration( pDecl );
    pDecl->Release();

    return S_OK;
}


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialog::DrawPolyLine( POINT* apPoints, UINT nNumPoints, D3DCOLOR color )
{
    DXUT_SCREEN_VERTEX* vertices = new DXUT_SCREEN_VERTEX[ nNumPoints ];
    if( vertices == NULL )
        return E_OUTOFMEMORY;

    DXUT_SCREEN_VERTEX* pVertex = vertices;
    POINT* pt = apPoints;
    for( UINT i=0; i < nNumPoints; i++ )
    {
        pVertex->x = m_x + (float) pt->x;
        pVertex->y = m_y + (float) pt->y;
        pVertex->z = 0.5f;
        pVertex->h = 1.0f;
        pVertex->color = color;
        pVertex->tu = 0.0f;
        pVertex->tv = 0.0f;

        pVertex++;
        pt++;
    }

    IDirect3DDevice9* pd3dDevice = m_pManager->GetD3DDevice();

    // Since we're doing our own drawing here we need to flush the sprites
    m_pManager->m_pSprite->Flush();
    IDirect3DVertexDeclaration9 *pDecl = NULL;
    pd3dDevice->GetVertexDeclaration( &pDecl );  // Preserve the sprite's current vertex decl
    pd3dDevice->SetFVF( DXUT_SCREEN_VERTEX::FVF );

    pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG2 );
    pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_SELECTARG2 );

    pd3dDevice->DrawPrimitiveUP( D3DPT_LINESTRIP, nNumPoints - 1, vertices, sizeof(DXUT_SCREEN_VERTEX) );

    pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
    pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );

    // Restore the vertex decl
    pd3dDevice->SetVertexDeclaration( pDecl );
    pDecl->Release();

    SAFE_DELETE_ARRAY( vertices );
    return S_OK;
}
 


//--------------------------------------------------------------------------------------
HRESULT CDXUTDialog::DrawSprite( CDXUTElement* pElement, RECT* prcDest )
{
    // No need to draw fully transparent layers
    if( pElement->TextureColor.Current.a == 0 )
        return S_OK;

    RECT rcTexture = pElement->rcTexture;
    
    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 );

    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 );