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| -rw-r--r-- | include/svtools/valueset.hxx | 412 |
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diff --git a/include/svtools/valueset.hxx b/include/svtools/valueset.hxx new file mode 100644 index 000000000..9fe1b885e --- /dev/null +++ b/include/svtools/valueset.hxx @@ -0,0 +1,412 @@ +/* -*- 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 . + */ + +#pragma once + +#include <svtools/svtdllapi.h> +#include <tools/wintypes.hxx> +#include <vcl/customweld.hxx> +#include <vcl/image.hxx> +#include <memory> +#include <vector> + +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_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_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 <RETURN> 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<std::unique_ptr<ValueSetItem>> 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<VirtualDevice> maVirDev; + css::uno::Reference<css::accessibility::XAccessible> mxAccessible; + ValueItemList mItemList; + std::unique_ptr<ValueSetItem> mpNoneItem; + std::unique_ptr<weld::ScrolledWindow> mxScrolledWindow; + tools::Rectangle maNoneItemRect; + tools::Rectangle maItemListRect; + tools::Long mnItemWidth; + tools::Long mnItemHeight; + tools::Long mnTextOffset; + tools::Long mnVisLines; + tools::Long mnLines; + tools::Long mnUserItemWidth; + tools::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<ValueSet*,void> maDoubleClickHdl; + Link<ValueSet*,void> maSelectHdl; + + bool mbFormat : 1; + bool mbHighlight : 1; + bool mbNoSelection : 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); + // nItemId is the item to draw selected, but if nothing is selected something else may be drawn as selected instead, the item to draw + // selected is returned + SVT_DLLPRIVATE ValueSetItem* ImplGetDrawSelectItem(sal_uInt16 nItemId, const bool bFocus, tools::Rectangle& rRect); + SVT_DLLPRIVATE void ImplDrawSelect(vcl::RenderContext& rRenderContext, + const tools::Rectangle& rRect, const ValueSetItem* pItem, + const bool bFocus, const bool bDrawSel, + const bool bSelected, const bool bHover); + SVT_DLLPRIVATE void ImplDrawSelect(vcl::RenderContext& rRenderContext); + SVT_DLLPRIVATE void ImplHighlightItem(sal_uInt16 nItemId); + 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<ValueSetItem> 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() const; + SVT_DLLPRIVATE void ImplTracking(bool bLeaveWindow, 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<css::accessibility::XAccessible> CreateAccessible() override; + weld::ScrolledWindow* GetScrollBar() const { return mxScrolledWindow.get(); } + +public: + ValueSet(std::unique_ptr<weld::ScrolledWindow> 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( tools::Long nItemWidth ); + void SetItemHeight( tools::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.IsTransparent(); + } + + 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<ValueSet*,void>& rLink) + { + maSelectHdl = rLink; + } + + void SetDoubleClickHdl(const Link<ValueSet*,void>& 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; + } + + virtual FactoryFunction GetUITestFactory() const override; +}; + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |