propsheet.c

这是针对 Linux (i386)平台的 minigui 3.6.2 开发包（MiniGUI-Processes 运行模式）。

            PPROPPAGE page;

            if ((page = get_page (pData, wParam)) && page != pData->active) {
                show_hide_page (pData->active, SW_HIDE);
                pData->active = page;
                NotifyParent (hwnd, pCtrl->id, PSN_ACTIVE_CHANGED);
                show_hide_page (page, SW_SHOW);
                InvalidateRect (hwnd, &pData->head_rc, TRUE);
                return PS_OKAY;
            }

            return PS_ERR;
        }

        /* Retrieves the index of the active page of the property sheet. */
        case PSM_GETACTIVEINDEX:
        {
            int index = 0;
            PPROPPAGE page;

            page = pData->head;
            while (page) {
                if (page == pData->active)
                    return index;

                index ++;
                page = page->next;
            }
            
            return PS_ERR;
        }

        case PSM_GETACTIVEPAGE:
        {
            if (pData->active)
                return pData->active->hwnd;
            else
                return HWND_INVALID;
        }

        /* Returns the page handle by index */
        case PSM_GETPAGE:
        {
            int index = 0;
            PPROPPAGE page;

            page = pData->head;
            while (page) {
                if (index == wParam)
                    return page->hwnd;

                index ++;
                page = page->next;
            }
            
            return HWND_INVALID;
        }

        /* Returns the page index by handle */
        case PSM_GETPAGEINDEX:
        {
            int index = 0;
            PPROPPAGE page;

            page = pData->head;
            while (page) {
                if (page->hwnd == wParam)
                    return index;

                index ++;
                page = page->next;
            }
            
            return PS_ERR;
        }

        /* Retrieves the number of pages in the property sheet */
        case PSM_GETPAGECOUNT:
            return pData->page_count;

        case PSM_GETTITLELENGTH:
        {
            int len = PS_ERR;
            PPROPPAGE page;

            if ((page = get_page (pData, wParam))) {
                len = strlen (page->title);
            }

            return len;
        }

        case PSM_GETTITLE:
        {
            char* buffer = (char*)lParam;
            PPROPPAGE page;

            if ((page = get_page (pData, wParam))) {
                strcpy (buffer, page->title);
                return PS_OKAY;
            }

            return PS_ERR;
        }

        case PSM_SETTITLE:
        {
            BOOL rc = PS_ERR;
            char* buffer = (char*)lParam;
            PPROPPAGE page;

            if ((page = get_page (pData, wParam))) {
                rc = set_page_title (page, buffer);
                recalc_tab_widths (hwnd, pData, pCtrl->dwStyle);
                InvalidateRect (hwnd, &pData->head_rc, TRUE);
            }
            return rc;
        }

        case PSM_ADDPAGE:
        {
            int index;
            PPROPPAGE page;

            if ((pData->head_rc.right / (pData->page_count + 1)) < _MIN_TAB_WIDTH)
                return PS_ERR;

            if (!(page = calloc (1, sizeof (PROPPAGE)))) {
                return PS_ERR;
            }

            if (!create_page (hwnd, pData, page, (DLGTEMPLATE *)wParam, (WNDPROC)lParam)) {
                free (page);
                return PS_ERR;
            }

            index = append_page (pData, page);

            if (pData->active)
                show_hide_page (pData->active, SW_HIDE);
            pData->active = page;
            NotifyParent (hwnd, pCtrl->id, PSN_ACTIVE_CHANGED);
            show_hide_page (page, SW_SHOW);

            recalc_tab_widths (hwnd, pData, pCtrl->dwStyle);
            InvalidateRect (hwnd, &pData->head_rc, TRUE);
            return index;
        }

        case PSM_REMOVEPAGE:
        {
            PPROPPAGE page;

            if ((page = get_page (pData, wParam))) {
                remove_page (pData, page);
                destroy_page (page);
                free (page);
                recalc_tab_widths (hwnd, pData, pCtrl->dwStyle);
            }
            else
                return PS_ERR;

            if (pData->active == page) {
                pData->active = pData->head;
                NotifyParent (hwnd, pCtrl->id, PSN_ACTIVE_CHANGED);
                if (pData->active)
                    show_hide_page (pData->active, SW_SHOW);
            }

            InvalidateRect (hwnd, &pData->head_rc, TRUE);
            return PS_OKAY;
        }

        case MSG_LBUTTONDOWN:
        {
            int x, y;
            PPROPPAGE page;
            RECT title_rc = {0, 0, 0, 0};
            
            title_rc.bottom = pData->head_rc.bottom;

            x = LOSWORD(lParam);
            y = HISWORD(lParam);
            
            page = pData->head;
            while (page) {
                title_rc.left = title_rc.right;
                title_rc.right = title_rc.left + page->width;

                if (PtInRect (&title_rc, x, y) && page != pData->active) {
                    show_hide_page (pData->active, SW_HIDE);
                    pData->active = page;
                    NotifyParent (hwnd, pCtrl->id, PSN_ACTIVE_CHANGED);
                    show_hide_page (page, SW_SHOW);
                    InvalidateRect (hwnd, &pData->head_rc, TRUE);
                    break;
                }

                page = page->next;
            }

            break;
        }

        case MSG_KEYDOWN:
        {
            PPROPPAGE page, new_active = NULL;

            if (pData->head == NULL)
                break;

#if 0
            if (pData->active && SendMessage (pData->active->hwnd, MSG_GETDLGCODE, 0, 0L) 
                        & DLGC_WANTARROWS) {
                break;
            }
#else
            if (!(lParam & KS_CTRL))
                break;
#endif

            switch (LOWORD (wParam)) {
            case SCANCODE_CURSORBLOCKDOWN:
            case SCANCODE_CURSORBLOCKRIGHT:
                new_active = pData->active->next;
                if (new_active == NULL)
                    new_active = pData->head;
                break;

            case SCANCODE_CURSORBLOCKUP:
            case SCANCODE_CURSORBLOCKLEFT:
                page = pData->head;
                if (pData->head == pData->active) {
                    while (page && page->next) {
                        page = page->next;
                    }
                }
                else {
                    while (page) {
                        if (page->next == pData->active)
                            break;
                        page = page->next;
                    }
                }
                new_active = page;
                break;
            }

            if (new_active == NULL)
                break;

            show_hide_page (pData->active, SW_HIDE);
            pData->active = new_active;
            NotifyParent (hwnd, pCtrl->id, PSN_ACTIVE_CHANGED);
            show_hide_page (new_active, SW_SHOW);
            InvalidateRect (hwnd, &pData->head_rc, TRUE);
            return 0;
        }

        case MSG_NCPAINT:
        case MSG_ERASEBKGND:
            return 0;

        case MSG_PAINT:
        {
            int x, ty, by;
            HDC  hdc;
            int text_extent;
            PPROPPAGE page;
            RECT title_rc = {0, 0, 0, 0};

            title_rc.bottom = pData->head_rc.bottom;

            hdc = BeginPaint (hwnd);

#ifdef _FLAT_WINDOW_STYLE
            DrawFlatControlFrameEx (hdc, hwnd, 0, pData->head_rc.bottom - 2,
                                      pData->head_rc.right, 
                                      pCtrl->bottom - pCtrl->top, 1, 
                                      DF_3DBOX_NORMAL | DF_3DBOX_NOTFILL, 0);
#else
            Draw3DThickFrameEx (hdc, hwnd, 0, pData->head_rc.bottom - 2, 
                                      pData->head_rc.right, 
                                      pCtrl->bottom - pCtrl->top,
                                      DF_3DBOX_NORMAL | DF_3DBOX_NOTFILL, 0);
#endif

            SetBrushColor (hdc, GetWindowElementColorEx (hwnd, BKC_CONTROL_DEF));
            FillBox (hdc, 0, 0, pData->head_rc.right, pData->head_rc.bottom - 2);

            page = pData->head;
            while (page) {
                title_rc.left = title_rc.right;
                title_rc.right = title_rc.left + page->width;

                SelectClipRect (hdc, &title_rc);

                x = title_rc.left + _ICON_OFFSET;
                ty = title_rc.top;
                if (page != pData->active) {
                    ty += 2;
                    by = title_rc.bottom - 2;
#if defined(_FLAT_WINDOW_STYLE) && !defined(_GRAY_SCREEN)
                    SetBrushColor (hdc, PIXEL_lightgray);
                    FillBox (hdc, title_rc.left, ty, title_rc.right - title_rc.left, by - 2);
#endif
                }
                else {
                    by = title_rc.bottom;
#if defined(_FLAT_WINDOW_STYLE) && !defined(_GRAY_SCREEN)
                    ty += 1;
                    SetBrushColor (hdc, PIXEL_lightwhite);
#endif
                    FillBox (hdc, title_rc.left, ty, title_rc.right - title_rc.left, by);
                }

#ifdef _FLAT_WINDOW_STYLE
#ifdef _GRAY_SCREEN
                SetPenColor (hdc, GetWindowElementColorEx (hwnd, WEC_FLAT_BORDER));
                MoveTo (hdc, title_rc.left + 1, by);
                LineTo (hdc, title_rc.left + 1, ty);
                LineTo (hdc, title_rc.right - 3, ty);
                LineTo (hdc, title_rc.right - 1, ty + 2);
                LineTo (hdc, title_rc.right - 1, by);
#else
                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_LEFT_INNER));
                if (page == pData->head) {
                    MoveTo (hdc, title_rc.left, by);
                    LineTo (hdc, title_rc.left, ty + 2);
                }
                MoveTo (hdc, title_rc.left, ty + 2);
                LineTo (hdc, title_rc.left + 2, ty);
                LineTo (hdc, title_rc.right - 3, ty);
                LineTo (hdc, title_rc.right - 1, ty + 2);
                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_LEFT_OUTER));
                LineTo (hdc, title_rc.right - 1, by - 1);

#endif
#else
                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_LEFT_INNER));
                MoveTo (hdc, title_rc.left, by);
                LineTo (hdc, title_rc.left, ty + 2);
                LineTo (hdc, title_rc.left + 2, ty);
                LineTo (hdc, title_rc.right - 3, ty);
                LineTo (hdc, title_rc.right - 1, ty + 2);
                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_LEFT_OUTER));
                LineTo (hdc, title_rc.right - 1, by);

                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_RIGHT_OUTER));
                MoveTo (hdc, title_rc.left + 1, by);
                LineTo (hdc, title_rc.left + 1, ty + 3);
                LineTo (hdc, title_rc.left + 3, ty + 1);
                LineTo (hdc, title_rc.right - 4, ty + 1);
                LineTo (hdc, title_rc.right - 2, ty + 3);
                SetPenColor(hdc, GetWindowElementColorEx (hwnd, WEC_3DFRAME_LEFT_INNER));
                LineTo (hdc, title_rc.right - 2, by);
#endif

                ty += _ICON_OFFSET + 2;
                text_extent = RECTW (title_rc) - _ICON_OFFSET * 2;

                if (page->icon) {
                    DrawIcon (hdc, x, ty, GetMainWinMetrics (MWM_ICONX),
                                   GetMainWinMetrics (MWM_ICONY), page->icon);
                    x += GetMainWinMetrics (MWM_ICONX);
                    x += _GAP_ICON_TEXT;
                    text_extent -= GetMainWinMetrics (MWM_ICONX) + _GAP_ICON_TEXT;
                }

#if defined(_FLAT_WINDOW_STYLE) && !defined(_GRAY_SCREEN)
                if (page != pData->active) {
                    SetBkColor (hdc, PIXEL_lightgray);
                }
                else {
                    SetBkColor (hdc, PIXEL_lightwhite);
                }
#else
                SetBkColor (hdc, GetWindowElementColorEx (hwnd, BKC_CONTROL_DEF));
#endif
                {
                    SIZE size;
                    int eff_chars, eff_len;
                    eff_len = GetTextExtentPoint (hdc, page->title, strlen(page->title), text_extent,
                                    &eff_chars, NULL, NULL, &size);
                    TextOutLen (hdc, x, ty, page->title, eff_len);
                }

                page = page->next;
            }

            EndPaint (hwnd, hdc);
            return 0;
        }

        default:
            break;
    }

    return DefaultControlProc (hwnd, message, wParam, lParam);
}

#endif /* _CTRL_PROPSHEET*/