tab.c

winNT技术操作系统,国外开放的原代码和LIUX一样

     *
     * Draw the icon.
     */
    if (infoPtr->himl && (item->mask & TCIF_IMAGE))
    {
      INT cx;
      INT cy;
      
      ImageList_GetIconSize(infoPtr->himl, &cx, &cy);

      if(lStyle & TCS_VERTICAL)
      {
        center_offset_h = ((drawRect->bottom - drawRect->top) - (cy + infoPtr->uHItemPadding + (rcText.right  - rcText.left))) / 2;
        center_offset_v = (drawRect->left + (drawRect->right - drawRect->left) - cx) / 2;
      }
      else
      {
        center_offset_h = ((drawRect->right - drawRect->left) - (cx + infoPtr->uHItemPadding + (rcText.right  - rcText.left))) / 2;
        center_offset_v = (drawRect->top + (drawRect->bottom - drawRect->top) - cy) / 2;
      }

      /* if an item is selected, the icon is shifted up instead of down */
      if (iItem == infoPtr->iSelected)
        center_offset_v -= infoPtr->uVItemPadding / 2;
      else
        center_offset_v += infoPtr->uVItemPadding / 2;

      if (lStyle & TCS_FIXEDWIDTH && lStyle & (TCS_FORCELABELLEFT | TCS_FORCEICONLEFT))
	center_offset_h = infoPtr->uHItemPadding;

      if (center_offset_h < 2)
        center_offset_h = 2;
	
      if (center_offset_v < 0)
        center_offset_v = 0;
	
      TRACE("for <%s>, c_o_h=%d, c_o_v=%d, draw=(%d,%d)-(%d,%d), textlen=%d\n",
	  debugstr_w(item->pszText), center_offset_h, center_offset_v,
	  drawRect->left, drawRect->top, drawRect->right, drawRect->bottom,
	  (rcText.right-rcText.left));

      if((lStyle & TCS_VERTICAL) && (lStyle & TCS_BOTTOM))
      {
        rcImage.top = drawRect->top + center_offset_h;
	/* if tab is TCS_VERTICAL and TCS_BOTTOM, the text is drawn from the */
	/* right side of the tab, but the image still uses the left as its x position */
	/* this keeps the image always drawn off of the same side of the tab */
        rcImage.left = drawRect->right - cx - center_offset_v;
        drawRect->top += cy + infoPtr->uHItemPadding;
      }
      else if(lStyle & TCS_VERTICAL)
      {
        rcImage.top  = drawRect->bottom - cy - center_offset_h;
	rcImage.left = drawRect->left + center_offset_v;
        drawRect->bottom -= cy + infoPtr->uHItemPadding;
      }
      else /* normal style, whether TCS_BOTTOM or not */
      {
        rcImage.left = drawRect->left + center_offset_h;
	rcImage.top = drawRect->top + center_offset_v;
        drawRect->left += cx + infoPtr->uHItemPadding;
      }

      TRACE("drawing image=%d, left=%d, top=%d\n",
	    item->iImage, rcImage.left, rcImage.top-1);
      ImageList_Draw
        (
        infoPtr->himl,
        item->iImage,
        hdc,
        rcImage.left,
        rcImage.top,
        ILD_NORMAL
        );
    }

    /* Now position text */
    if (lStyle & TCS_FIXEDWIDTH && lStyle & TCS_FORCELABELLEFT)
      center_offset_h = infoPtr->uHItemPadding;
    else
      if(lStyle & TCS_VERTICAL)
        center_offset_h = ((drawRect->bottom - drawRect->top) - (rcText.right - rcText.left)) / 2;
      else
        center_offset_h = ((drawRect->right - drawRect->left) - (rcText.right - rcText.left)) / 2;

    if(lStyle & TCS_VERTICAL)
    {
      if(lStyle & TCS_BOTTOM)
        drawRect->top+=center_offset_h;
      else
        drawRect->bottom-=center_offset_h;

      center_offset_v = ((drawRect->right - drawRect->left) - (rcText.bottom - rcText.top)) / 2;
    }
    else
    {
      drawRect->left += center_offset_h;
      center_offset_v = ((drawRect->bottom - drawRect->top) - (rcText.bottom - rcText.top)) / 2;
    }

    /* if an item is selected, the text is shifted up instead of down */
    if (iItem == infoPtr->iSelected)
        center_offset_v -= infoPtr->uVItemPadding / 2;
    else
        center_offset_v += infoPtr->uVItemPadding / 2;

    if (center_offset_v < 0)
      center_offset_v = 0;

    if(lStyle & TCS_VERTICAL)
      drawRect->left += center_offset_v;
    else
      drawRect->top += center_offset_v;

    /* Draw the text */
    if(lStyle & TCS_VERTICAL) /* if we are vertical rotate the text and each character */
    {
      static const WCHAR ArialW[] = { 'A','r','i','a','l',0 };
      LOGFONTW logfont;
      HFONT hFont = 0;
      INT nEscapement = 900;
      INT nOrientation = 900;

      if(lStyle & TCS_BOTTOM)
      {
        nEscapement = -900;
        nOrientation = -900;
      }

      /* to get a font with the escapement and orientation we are looking for, we need to */
      /* call CreateFontIndirectA, which requires us to set the values of the logfont we pass in */
      if (!GetObjectW((infoPtr->hFont) ?
                infoPtr->hFont : GetStockObject(SYSTEM_FONT),
                sizeof(LOGFONTW),&logfont))
      {
        INT iPointSize = 9;

        lstrcpyW(logfont.lfFaceName, ArialW);
        logfont.lfHeight = -MulDiv(iPointSize, GetDeviceCaps(hdc, LOGPIXELSY),
                                    72);
        logfont.lfWeight = FW_NORMAL;
        logfont.lfItalic = 0;
        logfont.lfUnderline = 0;
        logfont.lfStrikeOut = 0;
      }

      logfont.lfEscapement = nEscapement;
      logfont.lfOrientation = nOrientation;
      hFont = CreateFontIndirectW(&logfont);
      SelectObject(hdc, hFont);

      if (item->pszText)
      {
        ExtTextOutW(hdc,
        (lStyle & TCS_BOTTOM) ? drawRect->right : drawRect->left,
        (!(lStyle & TCS_BOTTOM)) ? drawRect->bottom : drawRect->top,
        ETO_CLIPPED,
        drawRect,
        item->pszText,
        lstrlenW(item->pszText),
        0);
      }

      DeleteObject(hFont);
    }
    else
    {
      TRACE("for <%s>, c_o_h=%d, c_o_v=%d, draw=(%d,%d)-(%d,%d), textlen=%d\n",
	  debugstr_w(item->pszText), center_offset_h, center_offset_v,
	  drawRect->left, drawRect->top, drawRect->right, drawRect->bottom,
	  (rcText.right-rcText.left));
      if (item->pszText)
      {
        DrawTextW
        (
          hdc,
          item->pszText,
          lstrlenW(item->pszText),
          drawRect,
          DT_LEFT | DT_SINGLELINE
        );
      }
    }

    *drawRect = rcTemp; /* restore drawRect */
  }

  /*
  * Cleanup
  */
  SelectObject(hdc, hOldFont);
  SetBkMode(hdc, oldBkMode);
  SelectObject(hdc, holdPen);
  DeleteObject( htextPen );
}

/******************************************************************************
 * TAB_DrawItem
 *
 * This method is used to draw a single tab into the tab control.
 */
static void TAB_DrawItem(
  TAB_INFO *infoPtr,
  HDC  hdc,
  INT  iItem)
{
  LONG      lStyle  = GetWindowLongW(infoPtr->hwnd, GWL_STYLE);
  RECT      itemRect;
  RECT      selectedRect;
  BOOL      isVisible;
  RECT      r, fillRect, r1;
  INT       clRight = 0;
  INT       clBottom = 0;
  COLORREF  bkgnd, corner;
  HTHEME    theme;

  /*
   * Get the rectangle for the item.
   */
  isVisible = TAB_InternalGetItemRect(infoPtr,
				      iItem,
				      &itemRect,
				      &selectedRect);

  if (isVisible)
  {
    RECT rUD, rC;

    /* Clip UpDown control to not draw over it */
    if (infoPtr->needsScrolling)
    {
      GetWindowRect(infoPtr->hwnd, &rC);
      GetWindowRect(infoPtr->hwndUpDown, &rUD);
      ExcludeClipRect(hdc, rUD.left - rC.left, rUD.top - rC.top, rUD.right - rC.left, rUD.bottom - rC.top);
    }

    /* If you need to see what the control is doing,
     * then override these variables. They will change what
     * fill colors are used for filling the tabs, and the
     * corners when drawing the edge.
     */
    bkgnd = comctl32_color.clrBtnFace;
    corner = comctl32_color.clrBtnFace;

    if (lStyle & TCS_BUTTONS)
    {
      /* Get item rectangle */
      r = itemRect;

      /* Separators between flat buttons */
      if (lStyle & TCS_FLATBUTTONS)
      {
	r1 = r;
	r1.right += (FLAT_BTN_SPACINGX -2);
	DrawEdge(hdc, &r1, EDGE_ETCHED, BF_RIGHT);
      }

      if (iItem == infoPtr->iSelected)
      {
	DrawEdge(hdc, &r, EDGE_SUNKEN, BF_SOFT|BF_RECT);
	
	OffsetRect(&r, 1, 1);
      }
      else  /* ! selected */
      {
	if (!(lStyle & TCS_FLATBUTTONS))
	  DrawEdge(hdc, &r, EDGE_RAISED, BF_SOFT|BF_RECT);
      }
    }
    else /* !TCS_BUTTONS */
    {
      /* We draw a rectangle of different sizes depending on the selection
       * state. */
      if (iItem == infoPtr->iSelected) {
	RECT rect;
	GetClientRect (infoPtr->hwnd, &rect);
	clRight = rect.right;
	clBottom = rect.bottom;
        r = selectedRect;
      }
      else
        r = itemRect;

      /*
       * Erase the background. (Delay it but setup rectangle.)
       * This is necessary when drawing the selected item since it is larger
       * than the others, it might overlap with stuff already drawn by the
       * other tabs
       */
      fillRect = r;

      /* Draw themed tabs - but only if they are at the top.
       * Windows draws even side or bottom tabs themed, with wacky results.
       * However, since in Wine apps may get themed that did not opt in via
       * a manifest avoid theming when we know the result will be wrong */
      if ((theme = GetWindowTheme (infoPtr->hwnd)) 
          && ((lStyle & (TCS_VERTICAL | TCS_BOTTOM)) == 0))
      {
          static const int partIds[8] = {
              /* Normal item */
              TABP_TABITEM,
              TABP_TABITEMLEFTEDGE,
              TABP_TABITEMRIGHTEDGE,
              TABP_TABITEMBOTHEDGE,
              /* Selected tab */
              TABP_TOPTABITEM,
              TABP_TOPTABITEMLEFTEDGE,
              TABP_TOPTABITEMRIGHTEDGE,
              TABP_TOPTABITEMBOTHEDGE,
          };
          int partIndex = 0;
          int stateId = TIS_NORMAL;

          /* selected and unselected tabs have different parts */
          if (iItem == infoPtr->iSelected)
              partIndex += 4;
          /* The part also differs on the position of a tab on a line.
           * "Visually" determining the position works well enough. */
          if(selectedRect.left == 0)
              partIndex += 1;
          if(selectedRect.right == clRight)
              partIndex += 2;

          if (iItem == infoPtr->iSelected)
              stateId = TIS_SELECTED;
          else if (iItem == infoPtr->iHotTracked)
              stateId = TIS_HOT;
          else if (iItem == infoPtr->uFocus)
              stateId = TIS_FOCUSED;

          /* Adjust rectangle for bottommost row */
          if (TAB_GetItem(infoPtr, iItem)->rect.top == infoPtr->uNumRows-1)
            r.bottom += 3;

          DrawThemeBackground (theme, hdc, partIds[partIndex], stateId, &r, NULL);
          GetThemeBackgroundContentRect (theme, hdc, partIds[partIndex], stateId, &r, &r);
      }
      else if(lStyle & TCS_VERTICAL)
      {
	/* These are for adjusting the drawing of a Selected tab      */
	/* The initial values are for the normal case of non-Selected */
	int ZZ = 1;   /* Do not strech if selected */
	if (iItem == infoPtr->iSelected) {
	    ZZ = 0;

	    /* if leftmost draw the line longer */
	    if(selectedRect.top == 0)
		fillRect.top += CONTROL_BORDER_SIZEY;
	    /* if rightmost draw the line longer */
	    if(selectedRect.bottom == clBottom)
		fillRect.bottom -= CONTROL_BORDER_SIZEY;
	}

        if (lStyle & TCS_BOTTOM)
        {
	  /* Adjust both rectangles to match native */
	  r.left += (1-ZZ);

          TRACE("<right> item=%d, fill=(%d,%d)-(%d,%d), edge=(%d,%d)-(%d,%d)\n",
		iItem,
		fillRect.left,fillRect.top,fillRect.right,fillRect.bottom,
		r.left,r.top,r.right,r.bottom);

	  /* Clear interior */
	  SetBkColor(hdc, bkgnd);
	  ExtTextOutW(hdc, 0, 0, 2, &fillRect, NULL, 0, 0);

	  /* Draw rectangular edge around tab */
	  DrawEdge(hdc, &r, EDGE_RAISED, BF_SOFT|BF_RIGHT|BF_TOP|BF_BOTTOM);

	  /* Now erase the top corner and draw diagonal edge */
	  SetBkColor(hdc, corner);
	  r1.left = r.right - ROUND_CORNER_SIZE - 1;
	  r1.top = r.top;
	  r1.right = r.right;
	  r1.bottom = r1.top + ROUND_CORNER_SIZE;
	  ExtTextOutW(hdc, 0, 0, 2, &r1, NULL, 0, 0);
	  r1.right--;
	  DrawEdge(hdc, &r1, EDGE_RAISED, BF_SOFT|BF_DIAGONAL_ENDTOPLEFT);

	  /* Now erase the bottom corner and draw diagonal edge */
	  r1.left = r.right - ROUND_CORNER_SIZE - 1;
	  r1.bottom = r.bottom;
	  r1.right = r.right;
	  r1.top = r1.bottom - ROUND_CORNER_SIZE;
	  ExtTextOutW(hdc, 0, 0, 2, &r1, NULL, 0, 0);
	  r1.right--;
	  DrawEdge(hdc, &r1, EDGE_RAISED, BF_SOFT|BF_DIAGONAL_ENDBOTTOMLEFT);

	  if ((iItem == infoPtr->iSelected) && (selectedRect.top == 0)) {
	      r1 = r;
	      r1.right = r1.left;
	      r1.left--;
	      DrawEdge(hdc, &r1, EDGE_RAISED, BF_SOFT|BF_TOP);
	  }

        }
        else
        {
          TRACE("<left> item=%d, fill=(%d,%d)-(%d,%d), edge=(%d,%d)-(%d,%d)\n",
		iItem,
		fillRect.left,fillRect.top,fillRect.right,fillRect.bottom,
		r.left,r.top,r.right,r.bottom);

	  /* Clear interior */
	  SetBkColor(hdc, bkgnd);
	  ExtTextOutW(hdc, 0, 0, 2, &fillRect, NULL, 0, 0);

	  /* Draw rectangular edge around tab */
	  DrawEdge(hdc, &r, EDGE_RAISED, BF_SOFT|BF_LEFT|BF_TOP|BF_BOTTOM);

	  /* Now erase the top corner and draw diagonal edge */
	  SetBkColor(hdc, corner);
	  r1.left = r.left;
	  r1.top = r.top;
	  r1.right = r1.left + ROUND_CORNER_SIZE + 1;
	  r1.bottom = r1.top + ROUND_CORNER_SIZE;
	  ExtTextOutW(hdc, 0, 0, 2, &r1, NULL, 0, 0);
	  r1.left++;
	  DrawEdge(hdc, &r1, EDGE_RAISED, BF_SOFT|BF_DIAGONAL_ENDTOPRIGHT);

	  /* Now erase the bottom corner and draw diagonal edge */
	  r1.left = r.left;
	  r1.bottom = r.bottom;
	  r1.right = r1.left + ROUND_CORNER_SIZE + 1;
	  r1.top = r1.bottom - ROUND_CORNER_SIZE;
	  ExtTextOutW(hdc, 0, 0, 2, &r1, NULL, 0, 0);
	  r1.left++;
	  DrawEdge(hdc, &r1, EDGE_SUNKEN, BF_DIAGONAL_ENDTOPLEFT);
        }
      }
      else  /* ! TCS_VERTICAL */
      {
	/* These are f