/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #ifndef INCLUDED_SVTOOLS_VALUESET_HXX #define INCLUDED_SVTOOLS_VALUESET_HXX #include #include #include #include #include #include #include class MouseEvent; class TrackingEvent; class HelpEvent; class KeyEvent; class DataChangedEvent; class ScrollBar; class UserDrawEvent; class VirtualDevice; struct ValueSetItem; enum class DrawFrameStyle; /************************************************************************* Description ============ class ValueSet This class allows the selection of an item. In the process items are drawn side by side. The selection of items can be more clear than in a ListBox shape for example in case of colors or samples. The amount of columns drawn by the control and whether the items should be encircled can be specified. Optional a NoSelection or name field could be shown. By default image and color items are supported. Items could be drawn by oneself if InsertItem() is only called with an ID. To achieve this the UserDraw handler needs to be overridden. The description text could be specified afterwards in case of UserDraw and any other items. Cross references class ListBox -------------------------------------------------------------------------- WinBits WB_RADIOSEL If set the selection will be drawn like an RadioButton. This does only make sense if the image is at least 8 pixel smaller on each side than the item and also WB_DOUBLEBORDER is set and as color COL_WINDOWWORKSPACE is specified. WB_FLATVALUESET Flat Look (if you set WB_ITEMBORDER or WB_DOUBLEBORDER, then you get extra border space, but the Borders aren't painted), WB_ITEMBORDER Items will be bordered WB_DOUBLEBORDER Items will be bordered twice. Additionally WB_ITEMBORDER has to be set, as otherwise this WinBit wouldn't have any effect. It is needed if there are items with a white background, since otherwise the 3D effect wouldn't be recognizable. WB_NAMEFIELD There is a namefield, where the name of an item will be shown. WB_NONEFIELD There is a NoSelection field which can be selected if 0 is passed along with SelectItem. Respectively GetSelectedItemId() returns 0 if this field or nothing is selected. This field shows the text which is specified by SetText() respectively no one, if no text was set. With SetNoSelection() the selection can be disabled. WB_VSCROLL A scrollbar will be always shown. The visible number of lines have to be specified with SetLineCount() if this flag is set. WB_BORDER A border will be drawn around the window. WB_NOPOINTERFOCUS The focus won't be gathered, if the control was pressed by the mouse. WB_TABSTOP It is possible to jump into the ValueSet with the tab key. WB_NOTABSTOP It is not possible to jump into the ValueSet with the tab key. WB_NO_DIRECTSELECT Cursor travelling doesn't call select immediately. To execute the selection has to be pressed. -------------------------------------------------------------------------- The number of columns must be either set with SetColCount() or SetItemWidth(). If the number of columns is specified by SetColCount() the width of the items will be calculated by the visible range. If the items should have a static width, it has to be specified with SetItemWidth(). In this case the number of columns will be calculated by the visible range. The number of rows is given by the number of items / number of columns. The number of visible rows must either specified by SetLineCount() or SetItemWidth(). If the number of visible rows is specified by SetLineCount(), the height of the items will be calculated from the visible height. If the items should have a fixed height it has to be specified with SetItemHeight(). In this case the number of visible rows is then calculated from the visible height. If the number of visible rows is neither specified by SetLineCount() nor by SetItemHeight() all rows will be shown. The height of the items will be calculated by the visible height. If the number of visible rows is specified by SetLineCount() or SetItemHeight() ValueSet does scroll automatically when more lines are available, as are visible. If scrolling should be also possible with a ScrollBar WB_VSCROLL needs to be set. The distance between the items can be increased by SetExtraSpacing(). The distance, which will be shown between two items (both in x and in y), is measured in pixels. The exact window size for a specific item size can be calculated by CalcWindowSizePixel(). To do this all relevant data (number of columns/...) have to be specified and if no number of rows was set, all items need to be inserted. If the window was created with WB_BORDER/Border=sal_True the size has to be specified with SetOutputSizePixel(). In other cases different size-methods can be used. With CalcItemSize() the inner and outer size of an item could be calculated (for this the free space defined by SetExtraSpacing() will not be included). The background color could be specified by SetColor(), with which the image or UserDraw items will be underlaid. If no color is specified the color of other windows (WindowColor) will be used for the background. -------------------------------------------------------------------------- At first all items should be inserted and only then Show() should be called since the output area will be precomputed. If this is not done the first Paint will appear a little bit slower. Therefore the Control, if it is loaded from the resource and only supplied with items during runtime, should be loaded with Hide = sal_True and then displayed with Show(). In case of a visible Control the creation of the new output area could be activated before Paint by calling Format(). -------------------------------------------------------------------------- If Drag and Drop will be called from the ValueSet the Command-Handler has to be overridden. From this StartDrag needs to be called. If this method returns sal_True the drag-process could be initiated by ExecuteDrag(), otherwise no processing will take place. This method makes sure that ValueSet stops its processing and as appropriate selects the entry. Therefore the calling of Select-Handler within this function must be expected. For dropping QueryDrop() and Drop() need to be overridden and ShowDropPos() and HideDropPos() should be called within these methods. To show the insertion point ShowDropPos() has to be called within the QueryDrop-Handler. ShowDropPos() also scrolls the ValueSet if the passed position is located at the window border. Furthermore ShowDropPos() returns the position, at which the item should be inserted respectively which insertion point was shown. If no insertion point was determined VALUESET_ITEM_NOTFOUND will be returned. If the window was left during dragging or the drag process is terminated HideDropPos() should be called in any case. -------------------------------------------------------------------------- This class is currently still in the SV-Tools. That's why the ValueSet needs to be loaded as a Control out of the resource and the desired WinBits have to be set (before Show) with SetStyle(). *************************************************************************/ typedef std::vector> ValueItemList; #define WB_ITEMBORDER (WinBits(0x00010000)) #define WB_DOUBLEBORDER (WinBits(0x00020000)) #define WB_NAMEFIELD (WinBits(0x00040000)) #define WB_NONEFIELD (WinBits(0x00080000)) #define WB_FLATVALUESET (WinBits(0x02000000)) #define WB_NO_DIRECTSELECT (WinBits(0x04000000)) #define WB_MENUSTYLEVALUESET (WinBits(0x08000000)) #define VALUESET_APPEND (size_t(-1)) #define VALUESET_ITEM_NOTFOUND (size_t(-1)) class SVT_DLLPUBLIC ValueSet : public weld::CustomWidgetController { private: ScopedVclPtr maVirDev; css::uno::Reference mxAccessible; ValueItemList mItemList; std::unique_ptr mpNoneItem; std::unique_ptr mxScrolledWindow; tools::Rectangle maNoneItemRect; tools::Rectangle maItemListRect; long mnItemWidth; long mnItemHeight; long mnTextOffset; long mnVisLines; long mnLines; long mnUserItemWidth; long mnUserItemHeight; sal_uInt16 mnSelItemId; int mnSavedItemId; sal_uInt16 mnHighItemId; sal_uInt16 mnCols; sal_uInt16 mnCurCol; sal_uInt16 mnUserCols; sal_uInt16 mnUserVisLines; sal_uInt16 mnFirstLine; sal_uInt16 mnSpacing; DrawFrameStyle mnFrameStyle; Color maColor; OUString maText; WinBits mnStyle; Link maDoubleClickHdl; Link maSelectHdl; bool mbFormat : 1; bool mbHighlight : 1; bool mbNoSelection : 1; bool mbDrawSelection : 1; bool mbBlackSel : 1; bool mbDoubleSel : 1; bool mbScroll : 1; bool mbFullMode : 1; bool mbEdgeBlending : 1; bool mbHasVisibleItems : 1; friend class ValueItemAcc; friend class ValueSetAcc; SVT_DLLPRIVATE void ImplDeleteItems(); SVT_DLLPRIVATE void ImplFormatItem(vcl::RenderContext const & rRenderContext, ValueSetItem* pItem, tools::Rectangle aRect); SVT_DLLPRIVATE void ImplDrawItemText(vcl::RenderContext& rRenderContext, const OUString& rStr); SVT_DLLPRIVATE void ImplDrawSelect(vcl::RenderContext& rRenderContext, sal_uInt16 nItemId, const bool bFocus, const bool bDrawSel); SVT_DLLPRIVATE void ImplDrawSelect(vcl::RenderContext& rRenderContext); SVT_DLLPRIVATE void ImplHighlightItem(sal_uInt16 nItemId, bool bIsSelection = true); SVT_DLLPRIVATE void ImplDraw(vcl::RenderContext& rRenderContext); SVT_DLLPRIVATE size_t ImplGetItem( const Point& rPoint ) const; SVT_DLLPRIVATE ValueSetItem* ImplGetItem( size_t nPos ); SVT_DLLPRIVATE ValueSetItem* ImplGetFirstItem(); SVT_DLLPRIVATE sal_uInt16 ImplGetVisibleItemCount() const; SVT_DLLPRIVATE void ImplInsertItem( std::unique_ptr pItem, const size_t nPos ); SVT_DLLPRIVATE tools::Rectangle ImplGetItemRect( size_t nPos ) const; SVT_DLLPRIVATE void ImplFireAccessibleEvent( short nEventId, const css::uno::Any& rOldValue, const css::uno::Any& rNewValue ); SVT_DLLPRIVATE bool ImplHasAccessibleListeners(); SVT_DLLPRIVATE void ImplTracking(const Point& rPos); SVT_DLLPRIVATE void QueueReformat(); SVT_DLLPRIVATE void SetFirstLine(sal_uInt16 nNewFirstLine); // set mnFirstLine and update scrollbar to match SVT_DLLPRIVATE void RecalcScrollBar(); SVT_DLLPRIVATE bool TurnOffScrollBar(); SVT_DLLPRIVATE void TurnOnScrollBar(); DECL_DLLPRIVATE_LINK(ImplScrollHdl, weld::ScrolledWindow&, void); Size GetLargestItemSize(); ValueSet (const ValueSet &) = delete; ValueSet & operator= (const ValueSet &) = delete; protected: virtual css::uno::Reference CreateAccessible() override; weld::ScrolledWindow* GetScrollBar() const { return mxScrolledWindow.get(); } public: ValueSet(std::unique_ptr pScrolledWindow); virtual ~ValueSet() override; virtual void SetDrawingArea(weld::DrawingArea* pDrawingArea) override; virtual bool MouseButtonDown( const MouseEvent& rMEvt ) override; virtual bool MouseButtonUp( const MouseEvent& rMEvt ) override; virtual bool MouseMove( const MouseEvent& rMEvt ) override; virtual bool KeyInput( const KeyEvent& rKEvt ) override; virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override; virtual void GetFocus() override; virtual void LoseFocus() override; virtual void Resize() override; virtual void StyleUpdated() override; virtual void Show() override; virtual void Hide() override; virtual OUString RequestHelp(tools::Rectangle& rHelpRect) override; virtual void Select(); virtual void UserDraw( const UserDrawEvent& rUDEvt ); OUString const & GetText() const { return maText; } void SetText(const OUString& rText) { maText = rText; } void SetStyle(WinBits nStyle); WinBits GetStyle() const { return mnStyle; } void SetOptimalSize(); /// Insert @rImage item. void InsertItem(sal_uInt16 nItemId, const Image& rImage); /// Insert @rImage item with @rStr as either a legend or tooltip depending on @bShowLegend. void InsertItem(sal_uInt16 nItemId, const Image& rImage, const OUString& rStr, size_t nPos = VALUESET_APPEND, bool bShowLegend = false); /// Insert an @rColor item with @rStr tooltip. void InsertItem(sal_uInt16 nItemId, const Color& rColor, const OUString& rStr); /// Insert an User Drawn item. void InsertItem(sal_uInt16 nItemId, size_t nPos = VALUESET_APPEND); /// Insert an User Drawn item with @rStr tooltip. void InsertItem(sal_uInt16 nItemId, const OUString& rStr, size_t nPos); void RemoveItem(sal_uInt16 nItemId); void Clear(); size_t GetItemCount() const; size_t GetItemPos( sal_uInt16 nItemId ) const; sal_uInt16 GetItemId( size_t nPos ) const; sal_uInt16 GetItemId( const Point& rPos ) const; tools::Rectangle GetItemRect( sal_uInt16 nItemId ) const; void EnableFullItemMode( bool bFullMode ); void SetColCount( sal_uInt16 nNewCols = 1 ); sal_uInt16 GetColCount() const { return mnUserCols; } void SetLineCount( sal_uInt16 nNewLines = 0 ); sal_uInt16 GetLineCount() const { return mnUserVisLines; } void SetItemWidth( long nItemWidth ); void SetItemHeight( long nLineHeight ); void SelectItem( sal_uInt16 nItemId ); sal_uInt16 GetSelectedItemId() const { return mnSelItemId; } size_t GetSelectItemPos() const { return GetItemPos( mnSelItemId ); } bool IsItemSelected( sal_uInt16 nItemId ) const { return !mbNoSelection && (nItemId == mnSelItemId); } void SetNoSelection(); bool IsNoSelection() const { return mbNoSelection; } void RecalculateItemSizes(); void SetItemImage( sal_uInt16 nItemId, const Image& rImage ); Image GetItemImage( sal_uInt16 nItemId ) const; void SetItemColor( sal_uInt16 nItemId, const Color& rColor ); Color GetItemColor( sal_uInt16 nItemId ) const; void SetItemData( sal_uInt16 nItemId, void* pData ); void* GetItemData( sal_uInt16 nItemId ) const; void SetItemText( sal_uInt16 nItemId, const OUString& rStr ); OUString GetItemText( sal_uInt16 nItemId ) const; void SetColor( const Color& rColor ); void SetColor() { SetColor(COL_TRANSPARENT); } bool IsColor() const { return maColor.GetTransparency() == 0; } void SetExtraSpacing( sal_uInt16 nNewSpacing ); void Format(vcl::RenderContext const & rRenderContext); void SetFormat(); Size CalcWindowSizePixel(const Size& rItemSize, sal_uInt16 nCalcCols = 0, sal_uInt16 nCalcLines = 0) const; Size CalcItemSizePixel(const Size& rSize) const; int GetScrollWidth() const; void SetSelectHdl(const Link& rLink) { maSelectHdl = rLink; } void SetDoubleClickHdl(const Link& rLink) { maDoubleClickHdl = rLink; } bool GetEdgeBlending() const { return mbEdgeBlending; } void SetEdgeBlending(bool bNew); void SaveValue() { mnSavedItemId = IsNoSelection() ? -1 : GetSelectedItemId(); } bool IsValueChangedFromSaved() const { int nItemId = IsNoSelection() ? -1 : GetSelectedItemId(); return mnSavedItemId != nItemId; } }; #endif // INCLUDED_SVTOOLS_VALUESET_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */