suigrid.pas

SUIPack是一款为Delphi和C++Builder开发的所见即所得的界面增强VCL组件

end;

function TsuiStringGrid.GetFontColor: TColor;
begin
    Result := Font.Color;
end;

procedure TsuiStringGrid.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
    inherited;

    if (
        (Operation = opRemove) and
        (AComponent = m_FileTheme)
    )then
    begin
        m_FileTheme := nil;
        SetUIStyle(SUI_THEME_DEFAULT);
    end;

    if (
        (Operation = opRemove) and
        (AComponent = m_HScrollBar)
    )then
    begin
        m_HScrollBar := nil;
        UpdateInnerScrollBars();
    end;

    if (
        (Operation = opRemove) and
        (AComponent = m_VScrollBar)
    )then
    begin
        m_VScrollBar := nil;
        UpdateInnerScrollBars();
    end;
end;

procedure TsuiStringGrid.OnHScrollBarChange(Sender: TObject);
begin
    if m_SelfChanging then
        Exit;
    m_UserChanging := true;
    SendMessage(Handle, WM_HSCROLL, MakeWParam(SB_THUMBPOSITION, m_HScrollBar.Position), 0);
    Invalidate;
    m_UserChanging := false;
end;

procedure TsuiStringGrid.OnVScrollBarChange(Sender: TObject);
begin
    if m_SelfChanging then
        Exit;
    m_UserChanging := true;
    SendMessage(Handle, WM_VSCROLL, MakeWParam(SB_THUMBPOSITION, m_VScrollBar.Position), 0);
    Invalidate;
    m_UserChanging := false;
end;

procedure TsuiStringGrid.Paint;
begin
    inherited;

    DrawControlBorder(self, m_BorderColor, Color, false);
end;

procedure TsuiStringGrid.SetBGColor(const Value: TColor);
begin
    Color := Value;
end;

procedure TsuiStringGrid.SetBorderColor(const Value: TColor);
begin
    m_BorderColor := Value;
    Repaint();
end;

procedure TsuiStringGrid.SetFileTheme(const Value: TsuiFileTheme);
begin
    m_FileTheme := Value;
    SetUIStyle(m_UIStyle);
end;

procedure TsuiStringGrid.SetFixedBGColor(const Value: TColor);
begin
    FixedColor := Value;
end;

procedure TsuiStringGrid.SetFixedFontColor(const Value: TColor);
begin
    m_FixedFontColor := Value;
    Repaint();
end;

procedure TsuiStringGrid.SetFocusedColor(const Value: TColor);
begin
    m_FocusedColor := Value;
    Repaint();
end;

procedure TsuiStringGrid.SetFontColor(const Value: TColor);
begin
    Font.Color := Value;
    Repaint();
end;

procedure TsuiStringGrid.SetHScrollBar(const Value: TsuiScrollBar);
begin
    if m_HScrollBar = Value then
        Exit;
    if m_HScrollBar <> nil then
    begin
        m_HScrollBar.OnChange := nil;
        m_HScrollBar.LineButton := 0;
        m_HScrollBar.Max := 100;
        m_HScrollBar.Enabled := true;
    end;

    m_HScrollBar := Value;
    if m_HScrollBar = nil then
    begin
        UpdateInnerScrollBars();
        Exit;
    end;
    m_HScrollBar.Orientation := suiHorizontal;
    m_HScrollBar.OnChange := OnHScrollBarChange;
    m_HScrollBar.BringToFront();
    UpdateInnerScrollBars();

    UpdateScrollBarsPos();
end;

procedure TsuiStringGrid.SetSelectedColor(const Value: TColor);
begin
    m_SelectedColor := Value;
    Repaint();
end;

procedure TsuiStringGrid.SetUIStyle(const Value: TsuiUIStyle);
var
    OutUIStyle : TsuiUIStyle;
begin
    m_UIStyle := Value;
    if UsingFileTheme(m_FileTheme, m_UIStyle, OutUIStyle) then
    begin
        BorderColor := m_FileTheme.GetColor(SKIN2_CONTROLBORDERCOLOR);
        FixedColor := m_FileTheme.GetColor(SKIN2_SELECTEDMENUCOLOR);
        Color := m_FileTheme.GetColor(SKIN2_CONTROLCOLOR);
        FixedFontColor := m_FileTheme.GetColor(SKIN2_MENUITEMFONTCOLOR);
        Font.Color := m_FileTheme.GetColor(SKIN2_CONTROLFONTCOLOR);
    end
    else
    begin
        BorderColor := GetInsideThemeColor(OutUIStyle, SUI_THEME_CONTROL_BORDER_COLOR);
        FixedColor := GetInsideThemeColor(OutUIStyle, SUI_THEME_MENU_SELECTED_BACKGROUND_COLOR);
        Color := GetInsideThemeColor(OutUIStyle, SUI_THEME_CONTROL_BACKGROUND_COLOR);
        FixedFontColor := GetInsideThemeColor(OutUIStyle, SUI_THEME_MENU_SELECTED_FONT_COLOR);
        Font.Color := GetInsideThemeColor(OutUIStyle, SUI_THEME_MENU_FONT_COLOR);
	if (Font.Color = clWhite) then
	    Font.Color := clBlack;
    end;

    if m_VScrollBar <> nil then
        m_VScrollBar.UIStyle := OutUIStyle;
    if m_HScrollBar <> nil then
        m_HScrollBar.UIStyle := OutUIStyle;
end;

procedure TsuiStringGrid.SetVScrollBar(const Value: TsuiScrollBar);
begin
    if m_VScrollBar = Value then
        Exit;
    if m_VScrollBar <> nil then
    begin
        m_VScrollBar.OnChange := nil;
        m_VScrollBar.LineButton := 0;
        m_VScrollBar.Max := 100;
        m_VScrollBar.Enabled := true;
    end;

    m_VScrollBar := Value;
    if m_VScrollBar = nil then
    begin
        UpdateInnerScrollBars();
        Exit;
    end;
    m_VScrollBar.Orientation := suiVertical;
    m_VScrollBar.OnChange := OnVScrollBArChange;
    m_VScrollBar.BringToFront();
    UpdateInnerScrollBars();

    UpdateScrollBarsPos();
end;

procedure TsuiStringGrid.UpdateInnerScrollBars;
begin
    if (m_VScrollBar <> nil) and (m_HScrollBar <> nil) then
        ScrollBars := ssBoth
    else if (m_VScrollBar <> nil) and (m_HScrollBar = nil) then
        ScrollBars := ssVertical
    else if (m_HScrollBar <> nil) and (m_VScrollBar = nil) then
        ScrollBars := ssHorizontal
    else
        ScrollBars := ssNone;
end;

procedure TsuiStringGrid.UpdateScrollBars;
var
    info : tagScrollInfo;
    barinfo : tagScrollBarInfo;
begin
    if m_UserChanging then
        Exit;       
    m_SelfChanging := true;
    if m_HScrollBar <> nil then
    begin
        barinfo.cbSize := SizeOf(barinfo);
        if not SUIGetScrollBarInfo(Handle, Integer(OBJID_HSCROLL), barinfo) then
        begin
            m_HScrollBar.Visible := false;
        end
        else if (barinfo.rgstate[0] = STATE_SYSTEM_INVISIBLE) or
           (barinfo.rgstate[0] = STATE_SYSTEM_UNAVAILABLE) or
           (not Enabled) then
        begin
            m_HScrollBar.LineButton := 0;
            m_HScrollBar.Visible := false;
            m_HScrollBar.SliderVisible := false;
        end
        else
        begin
            m_HScrollBar.LineButton := abs(barinfo.xyThumbBottom - barinfo.xyThumbTop);
            m_HScrollBar.SmallChange := 3 * m_HScrollBar.PageSize;
            m_HScrollBar.Visible := true;
            m_HScrollBar.SliderVisible := true;
        end;
        info.cbSize := SizeOf(info);
        info.fMask := SIF_ALL;
        GetScrollInfo(Handle, SB_HORZ, info);
        m_HScrollBar.Max := info.nMax - Integer(info.nPage) + 1;
        m_HScrollBar.Min := info.nMin;
        m_HScrollBar.Position := info.nPos
    end;

    if m_VScrollBar <> nil then
    begin
        barinfo.cbSize := SizeOf(barinfo);
        if not SUIGetScrollBarInfo(Handle, Integer(OBJID_VSCROLL), barinfo) then
        begin
            m_VScrollBar.Visible := false;
        end
        else if (barinfo.rgstate[0] = STATE_SYSTEM_INVISIBLE) or
           (barinfo.rgstate[0] = STATE_SYSTEM_UNAVAILABLE) or
           (not Enabled) then
        begin
            m_VScrollBar.LineButton := 0;
            m_VScrollBar.Visible := false;
            m_VScrollBar.SliderVisible := false;
        end
        else
        begin
            m_VScrollBar.LineButton := abs(barinfo.xyThumbBottom - barinfo.xyThumbTop);
            m_VScrollBar.Visible := true;
            m_VScrollBar.SliderVisible := true;
        end;
        info.cbSize := SizeOf(info);
        info.fMask := SIF_ALL;
        GetScrollInfo(Handle, SB_VERT, info);
        m_VScrollBar.Max := info.nMax - Integer(info.nPage) + 1;
        m_VScrollBar.Min := info.nMin;
        m_VScrollBar.Position := info.nPos;
    end;
    m_SelfChanging := false;
end;

procedure TsuiStringGrid.UpdateScrollBarsPos;
var
    L2R : Boolean;
begin
    UpdateScrollBars();
    L2R := ((BidiMode = bdLeftToRight) or (BidiMode = bdRightToLeftReadingOnly)) or (not SysLocale.MiddleEast);
    if m_HScrollBar <> nil then
    begin
        if Height < m_HScrollBar.Height then
            m_HScrollBar.Visible := false
        else
            m_HScrollBar.Visible := true;
        if L2R then
        begin
            m_HScrollBar.Left := Left + 1;
            m_HScrollBar.Top := Top + Height - m_HScrollBar.Height - 1;
            if (m_VScrollBar <> nil) and m_VScrollBar.Visible then
                m_HScrollBar.Width := Width - 1 - m_VScrollBar.Width
            else
                m_HScrollBar.Width := Width - 2
        end
        else
        begin
            m_HScrollBar.Top := Top + Height - m_HScrollBar.Height - 1;
            if (m_VScrollBar <> nil) and m_VScrollBar.Visible then
            begin
                m_HScrollBar.Left := Left + m_VScrollBar.Width + 1;
                m_HScrollBar.Width := Width - 1 - m_VScrollBar.Width
            end
            else
            begin
                m_HScrollBar.Left := Left + 1;
                m_HScrollBar.Width := Width - 1;
            end;
        end;
    end;

    if m_VScrollBar <> nil then
    begin
        if Width < m_VScrollBar.Width then
            m_VScrollBar.Visible := false
        else
            m_VScrollBar.Visible := true;

        if L2R then
        begin
            m_VScrollBar.Left := Left + Width - m_VScrollBar.Width - 1;
            m_VScrollBar.Top := Top + 1;
            if (m_HScrollBar <> nil) and m_HScrollBar.Visible then
                m_VScrollBar.Height := Height - 1 - m_HScrollBar.Height
            else
                m_VScrollBar.Height := Height - 1;
        end
        else
        begin
            m_VScrollBar.Left := Left + 1;
            m_VScrollBar.Top := Top + 1;
            if (m_HScrollBar <> nil) and m_HScrollBar.Visible then
                m_VScrollBar.Height := Height - 1 - m_HScrollBar.Height
            else
                m_VScrollBar.Height := Height - 1;
        end;
    end;

    UpdateScrollBars();    
end;

procedure TsuiStringGrid.WMClear(var Message: TMessage);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMCut(var Message: TMessage);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMEARSEBKGND(var Msg: TMessage);
begin
    Paint();
end;

procedure TsuiStringGrid.WMHSCROLL(var Message: TWMHScroll);
begin
    inherited;
    if m_UserChanging then
        Exit;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMKeyDown(var Message: TWMKeyDown);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMLBUTTONDOWN(var Message: TMessage);
begin
    inherited;
    m_MouseDown := true;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMLButtonUp(var Message: TMessage);
begin
    inherited;
    m_MouseDown := false;
end;

procedure TsuiStringGrid.WMMOUSEMOVE(var Message: TMessage);
begin
    inherited;
    if m_MouseDown then UpdateScrollBars();
end;

procedure TsuiStringGrid.WMMOUSEWHEEL(var Message: TMessage);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMMOVE(var Msg: TMessage);
begin
    inherited;
    UpdateScrollBarsPos();
end;

procedure TsuiStringGrid.WMPaste(var Message: TMessage);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMSetText(var Message: TWMSetText);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMSIZE(var Msg: TMessage);
begin
    inherited;
    UpdateScrollBarsPos();
end;

procedure TsuiStringGrid.WMUndo(var Message: TMessage);
begin
    inherited;
    UpdateScrollBars();
end;

procedure TsuiStringGrid.WMVSCROLL(var Message: TWMVScroll);
begin
    inherited;
    if m_UserChanging then
        Exit;
    UpdateScrollBars();
end;

end.