draw.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

    if((uFlags & BF_BOTTOMLEFT) == BF_BOTTOMLEFT)   LBpenplus = 1;
    if((uFlags & BF_TOPRIGHT) == BF_TOPRIGHT)       RTpenplus = 1;
    if((uFlags & BF_BOTTOMRIGHT) == BF_BOTTOMRIGHT) RBpenplus = 1;
    if((uFlags & BF_TOPLEFT) == BF_TOPLEFT)         LTpenplus = 1;

    if(LTInnerI != -1) LTInnerPen = get_edge_pen (LTInnerI, theme, part, state);
    if(LTOuterI != -1) LTOuterPen = get_edge_pen (LTOuterI, theme, part, state);
    if(RBInnerI != -1) RBInnerPen = get_edge_pen (RBInnerI, theme, part, state);
    if(RBOuterI != -1) RBOuterPen = get_edge_pen (RBOuterI, theme, part, state);

    MoveToEx(hdc, 0, 0, &SavePoint);

    /* Draw the outer edge */
    SelectObject(hdc, LTOuterPen);
    if(uFlags & BF_TOP)
    {
        MoveToEx(hdc, InnerRect.left, InnerRect.top, NULL);
        LineTo(hdc, InnerRect.right, InnerRect.top);
    }
    if(uFlags & BF_LEFT)
    {
        MoveToEx(hdc, InnerRect.left, InnerRect.top, NULL);
        LineTo(hdc, InnerRect.left, InnerRect.bottom);
    }
    SelectObject(hdc, RBOuterPen);
    if(uFlags & BF_BOTTOM)
    {
        MoveToEx(hdc, InnerRect.right-1, InnerRect.bottom-1, NULL);
        LineTo(hdc, InnerRect.left-1, InnerRect.bottom-1);
    }
    if(uFlags & BF_RIGHT)
    {
        MoveToEx(hdc, InnerRect.right-1, InnerRect.bottom-1, NULL);
        LineTo(hdc, InnerRect.right-1, InnerRect.top-1);
    }

    /* Draw the inner edge */
    SelectObject(hdc, LTInnerPen);
    if(uFlags & BF_TOP)
    {
        MoveToEx(hdc, InnerRect.left+LTpenplus, InnerRect.top+1, NULL);
        LineTo(hdc, InnerRect.right-RTpenplus, InnerRect.top+1);
    }
    if(uFlags & BF_LEFT)
    {
        MoveToEx(hdc, InnerRect.left+1, InnerRect.top+LTpenplus, NULL);
        LineTo(hdc, InnerRect.left+1, InnerRect.bottom-LBpenplus);
    }
    SelectObject(hdc, RBInnerPen);
    if(uFlags & BF_BOTTOM)
    {
        MoveToEx(hdc, InnerRect.right-1-RBpenplus, InnerRect.bottom-2, NULL);
        LineTo(hdc, InnerRect.left-1+LBpenplus, InnerRect.bottom-2);
    }
    if(uFlags & BF_RIGHT)
    {
        MoveToEx(hdc, InnerRect.right-2, InnerRect.bottom-1-RBpenplus, NULL);
        LineTo(hdc, InnerRect.right-2, InnerRect.top-1+RTpenplus);
    }

    if( ((uFlags & BF_MIDDLE) && retval) || (uFlags & BF_ADJUST) )
    {
        int add = (LTRBInnerMono[uType & (BDR_INNER|BDR_OUTER)] != -1 ? 1 : 0)
                + (LTRBOuterMono[uType & (BDR_INNER|BDR_OUTER)] != -1 ? 1 : 0);

        if(uFlags & BF_LEFT)   InnerRect.left   += add;
        if(uFlags & BF_RIGHT)  InnerRect.right  -= add;
        if(uFlags & BF_TOP)    InnerRect.top    += add;
        if(uFlags & BF_BOTTOM) InnerRect.bottom -= add;

        if((uFlags & BF_MIDDLE) && retval)
        {
            HBRUSH br = get_edge_brush ((uFlags & BF_MONO) ? EDGE_WINDOW : EDGE_FILL, 
                theme, part, state);
            FillRect(hdc, &InnerRect, br);
            DeleteObject (br);
        }

        if(uFlags & BF_ADJUST)
            *contentsRect = InnerRect;
    }

    /* Cleanup */
    SelectObject(hdc, SavePen);
    MoveToEx(hdc, SavePoint.x, SavePoint.y, NULL);
    if(LTInnerI != -1) DeleteObject (LTInnerPen);
    if(LTOuterI != -1) DeleteObject (LTOuterPen);
    if(RBInnerI != -1) DeleteObject (RBInnerPen);
    if(RBOuterI != -1) DeleteObject (RBOuterPen);
    return retval;
}


/***********************************************************************
 *      DrawThemeEdge                                       (UXTHEME.@)
 *
 * DrawThemeEdge() is pretty similar to the vanilla DrawEdge() - the
 * difference is that it does not rely on the system colors alone, but
 * also allows color specification in the theme.
 */
HRESULT WINAPI DrawThemeEdge(HTHEME hTheme, HDC hdc, int iPartId,
                             int iStateId, const RECT *pDestRect, UINT uEdge,
                             UINT uFlags, RECT *pContentRect)
{
    TRACE("%d %d 0x%08x 0x%08x\n", iPartId, iStateId, uEdge, uFlags);
    if(!hTheme)
        return E_HANDLE;
     
    if(uFlags & BF_DIAGONAL)
        return draw_diag_edge (hdc, hTheme, iPartId, iStateId, pDestRect,
            uEdge, uFlags, pContentRect);
    else
        return draw_rect_edge (hdc, hTheme, iPartId, iStateId, pDestRect,
            uEdge, uFlags, pContentRect);
}


/***********************************************************************
 *      DrawThemeIcon                                       (UXTHEME.@)
 */
HRESULT WINAPI DrawThemeIcon(HTHEME hTheme, HDC hdc, int iPartId, int iStateId,
                             const RECT *pRect, HIMAGELIST himl, int iImageIndex)
{
    FIXME("%d %d: stub\n", iPartId, iStateId);
    if(!hTheme)
        return E_HANDLE;
    return ERROR_CALL_NOT_IMPLEMENTED;
}

/***********************************************************************
 *      DrawThemeText                                       (UXTHEME.@)
 */
HRESULT WINAPI DrawThemeText(HTHEME hTheme, HDC hdc, int iPartId, int iStateId,
                             LPCWSTR pszText, int iCharCount, DWORD dwTextFlags,
                             DWORD dwTextFlags2, const RECT *pRect)
{
    HRESULT hr;
    HFONT hFont = NULL;
    HGDIOBJ oldFont = NULL;
    LOGFONTW logfont;
    COLORREF textColor;
    COLORREF oldTextColor;
    int oldBkMode;
    RECT rt;
    
    TRACE("%d %d: stub\n", iPartId, iStateId);
    if(!hTheme)
        return E_HANDLE;
    
    hr = GetThemeFont(hTheme, hdc, iPartId, iStateId, TMT_FONT, &logfont);
    if(SUCCEEDED(hr)) {
        hFont = CreateFontIndirectW(&logfont);
        if(!hFont)
            TRACE("Failed to create font\n");
    }
    CopyRect(&rt, pRect);
    if(hFont)
        oldFont = SelectObject(hdc, hFont);
        
    if(dwTextFlags2 & DTT_GRAYED)
        textColor = GetSysColor(COLOR_GRAYTEXT);
    else {
        if(FAILED(GetThemeColor(hTheme, iPartId, iStateId, TMT_TEXTCOLOR, &textColor)))
            textColor = GetTextColor(hdc);
    }
    oldTextColor = SetTextColor(hdc, textColor);
    oldBkMode = SetBkMode(hdc, TRANSPARENT);
    DrawTextW(hdc, pszText, iCharCount, &rt, dwTextFlags);
    SetBkMode(hdc, oldBkMode);
    SetTextColor(hdc, oldTextColor);

    if(hFont) {
        SelectObject(hdc, oldFont);
        DeleteObject(hFont);
    }
    return S_OK;
}

/***********************************************************************
 *      GetThemeBackgroundContentRect                       (UXTHEME.@)
 */
HRESULT WINAPI GetThemeBackgroundContentRect(HTHEME hTheme, HDC hdc, int iPartId,
                                             int iStateId,
                                             const RECT *pBoundingRect,
                                             RECT *pContentRect)
{
    MARGINS margin;
    HRESULT hr;

    TRACE("(%d,%d)\n", iPartId, iStateId);
    if(!hTheme)
        return E_HANDLE;

    /* try content margins property... */
    hr = GetThemeMargins(hTheme, hdc, iPartId, iStateId, TMT_CONTENTMARGINS, NULL, &margin);
    if(SUCCEEDED(hr)) {
        pContentRect->left = pBoundingRect->left + margin.cxLeftWidth;
        pContentRect->top  = pBoundingRect->top + margin.cyTopHeight;
        pContentRect->right = pBoundingRect->right - margin.cxRightWidth;
        pContentRect->bottom = pBoundingRect->bottom - margin.cyBottomHeight;
    } else {
        /* otherwise, try to determine content rect from the background type and props */
        int bgtype = BT_BORDERFILL;
        memcpy(pContentRect, pBoundingRect, sizeof(RECT));

        GetThemeEnumValue(hTheme, iPartId, iStateId, TMT_BGTYPE, &bgtype);
        if(bgtype == BT_BORDERFILL) {
            int bordersize = 1;
    
            GetThemeInt(hTheme, iPartId, iStateId, TMT_BORDERSIZE, &bordersize);
            InflateRect(pContentRect, -bordersize, -bordersize);
        } else if ((bgtype == BT_IMAGEFILE)
                && (SUCCEEDED(hr = GetThemeMargins(hTheme, hdc, iPartId, iStateId, 
                TMT_SIZINGMARGINS, NULL, &margin)))) {
            pContentRect->left = pBoundingRect->left + margin.cxLeftWidth;
            pContentRect->top  = pBoundingRect->top + margin.cyTopHeight;
            pContentRect->right = pBoundingRect->right - margin.cxRightWidth;
            pContentRect->bottom = pBoundingRect->bottom - margin.cyBottomHeight;
        }
        /* If nothing was found, leave unchanged */
    }

    TRACE("left:%d,top:%d,right:%d,bottom:%d\n", pContentRect->left, pContentRect->top, pContentRect->right, pContentRect->bottom);

    return S_OK;
}

/***********************************************************************
 *      GetThemeBackgroundExtent                            (UXTHEME.@)
 */
HRESULT WINAPI GetThemeBackgroundExtent(HTHEME hTheme, HDC hdc, int iPartId,
                                        int iStateId, const RECT *pContentRect,
                                        RECT *pExtentRect)
{
    MARGINS margin;
    HRESULT hr;

    TRACE("(%d,%d)\n", iPartId, iStateId);
    if(!hTheme)
        return E_HANDLE;

    /* try content margins property... */
    hr = GetThemeMargins(hTheme, hdc, iPartId, iStateId, TMT_CONTENTMARGINS, NULL, &margin);
    if(SUCCEEDED(hr)) {
        pExtentRect->left = pContentRect->left - margin.cxLeftWidth;
        pExtentRect->top  = pContentRect->top - margin.cyTopHeight;
        pExtentRect->right = pContentRect->right + margin.cxRightWidth;
        pExtentRect->bottom = pContentRect->bottom + margin.cyBottomHeight;
    } else {
        /* otherwise, try to determine content rect from the background type and props */
        int bgtype = BT_BORDERFILL;
        memcpy(pExtentRect, pContentRect, sizeof(RECT));

        GetThemeEnumValue(hTheme, iPartId, iStateId, TMT_BGTYPE, &bgtype);
        if(bgtype == BT_BORDERFILL) {
            int bordersize = 1;
    
            GetThemeInt(hTheme, iPartId, iStateId, TMT_BORDERSIZE, &bordersize);
            InflateRect(pExtentRect, bordersize, bordersize);
        } else if ((bgtype == BT_IMAGEFILE)
                && (SUCCEEDED(hr = GetThemeMargins(hTheme, hdc, iPartId, iStateId, 
                TMT_SIZINGMARGINS, NULL, &margin)))) {
            pExtentRect->left = pContentRect->left - margin.cxLeftWidth;
            pExtentRect->top  = pContentRect->top - margin.cyTopHeight;
            pExtentRect->right = pContentRect->right + margin.cxRightWidth;
            pExtentRect->bottom = pContentRect->bottom + margin.cyBottomHeight;
        }
        /* If nothing was found, leave unchanged */
    }

    TRACE("left:%d,top:%d,right:%d,bottom:%d\n", pExtentRect->left, pExtentRect->top, pExtentRect->right, pExtentRect->bottom);

    return S_OK;
}

/***********************************************************************
 *      GetThemeBackgroundRegion                            (UXTHEME.@)
 *
 * Calculate the background region, taking into consideration transparent areas
 * of the background image.
 */
HRESULT WINAPI GetThemeBackgroundRegion(HTHEME hTheme, HDC hdc, int iPartId,
                                        int iStateId, const RECT *pRect,
                                        HRGN *pRegion)
{
    HRESULT hr = S_OK;
    int bgtype = BT_BORDERFILL;

    TRACE("(%p,%p,%d,%d)\n", hTheme, hdc, iPartId, iStateId);
    if(!hTheme)
        return E_HANDLE;
    if(!pRect || !pRegion)
        return E_POINTER;

    GetThemeEnumValue(hTheme, iPartId, iStateId, TMT_BGTYPE, &bgtype);
    if(bgtype == BT_IMAGEFILE) {
        FIXME("Images not handled yet\n");
        hr = ERROR_CALL_NOT_IMPLEMENTED;
    }
    else if(bgtype == BT_BORDERFILL) {
        *pRegion = CreateRectRgn(pRect->left, pRect->top, pRect->right, pRect->bottom);
        if(!*pRegion)
            hr = HRESULT_FROM_WIN32(GetLastError());
    }
    else {
        FIXME("Unknown background type\n");
        /* This should never happen, and hence I don't know what to return */
        hr = E_FAIL;
    }
    return hr;
}

/* compute part size for "borderfill" backgrounds */
static HRESULT get_border_background_size (HTHEME hTheme, int iPartId,
                                           int iStateId, THEMESIZE eSize, POINT* psz)
{
    HRESULT hr = S_OK;
    int bordersize = 1;

    if (SUCCEEDED (hr = GetThemeInt(hTheme, iPartId, iStateId, TMT_BORDERSIZE, 
        &bordersize)))
    {
        psz->x = psz->y = 2*bordersize;
        if (eSize != TS_MIN)
        {
            psz->x++;
            psz->y++; 
        }
    }
    return hr;
}

/***********************************************************************
 *      GetThemePartSize                                    (UXTHEME.@)
 */
HRESULT WINAPI GetThemePartSize(HTHEME hTheme, HDC hdc, int iPartId,
                                int iStateId, RECT *prc, THEMESIZE eSize,
                                SIZE *psz)
{
    int bgtype = BT_BORDERFILL;
    HRESULT hr = S_OK;
    POINT size = {1, 1};

    if(!hTheme)
        return E_HANDLE;

    GetThemeEnumValue(hTheme, iPartId, iStateId, TMT_BGTYPE, &bgtype);
    if (bgtype == BT_NONE)
        /* do nothing */;
    else if(bg