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| -rw-r--r-- | include/vcl/headbar.hxx | 319 |
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diff --git a/include/vcl/headbar.hxx b/include/vcl/headbar.hxx new file mode 100644 index 000000000..1f9fc429a --- /dev/null +++ b/include/vcl/headbar.hxx @@ -0,0 +1,319 @@ +/* -*- 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_VCL_HEADBAR_HXX +#define INCLUDED_VCL_HEADBAR_HXX + +#include <vcl/dllapi.h> +#include <tools/link.hxx> +#include <vcl/window.hxx> +#include <o3tl/typed_flags_set.hxx> +#include <memory> + +/************************************************************************* + +Description +============ + +class HeaderBar + +This class serves for displaying a header bar. A header bar can display +texts, images or both of them. The items can be changed in size, dragged or +clicked at. In many cases, it makes, for example, sense to use this control +in combination with a SvTabListBox. + +-------------------------------------------------------------------------- + +WinBits + +WB_BORDER a border is drawn in the top and in the bottom +WB_BOTTOMBORDER a border is drawn in the bottom +WB_BUTTONSTYLE The items look like buttons, otherwise they are flat. +WB_3DLOOK 3D look +WB_DRAG items can be dragged +WB_STDHEADERBAR WB_BUTTONSTYLE | WB_BOTTOMBORDER + +-------------------------------------------------------------------------- + +ItemBits + +HeaderBarItemBits::LEFT content is displayed in the item left-justified +HeaderBarItemBits::CENTER content is displayed in the item centred +HeaderBarItemBits::RIGHT content is displayed in the item right-justified +HeaderBarItemBits::TOP content is displayed in the item at the upper border +HeaderBarItemBits::VCENTER content is displayed in the item vertically centred +HeaderBarItemBits::BOTTOM content is displayed in the item at the bottom border +HeaderBarItemBits::LEFTIMAGE in case of text and image, the image is displayed left of the text +HeaderBarItemBits::RIGHTIMAGE in case of text and image, the image is displayed right of the text +HeaderBarItemBits::FIXED item cannot be changed in size +HeaderBarItemBits::FIXEDPOS item cannot be moved +HeaderBarItemBits::CLICKABLE item is clickable + (select handler is only called on MouseButtonUp) +HeaderBarItemBits::FLAT item is displayed in a flat way, even if WB_BUTTONSTYLE is set +HeaderBarItemBits::DOWNARROW An arrow pointing downwards is displayed behind the text, + which should, for example, be shown, when after this item, + a corresponding list is sorted in descending order. + The status of the arrow can be set/reset with SetItemBits(). +HeaderBarItemBits::UPARROW An arrow pointing upwards is displayed behind the text, + which should, for example, be shown, when after this item, + a corresponding list is sorted in ascending order. + The status of the arrow can be set/reset with SetItemBits(). +HeaderBarItemBits::USERDRAW For this item, the UserDraw handler is called as well. +HeaderBarItemBits::STDSTYLE (HeaderBarItemBits::LEFT | HeaderBarItemBits::LEFTIMAGE | HeaderBarItemBits::CLICKABLE) + +-------------------------------------------------------------------------- + +Handler + +Select() Is called, when the item is clicked. If HeaderBarItemBits::CLICKABLE + is set in the item and not HeaderBarItemBits::FLAT, the handler is only + called in the MouseButtonUp handler, when the mouse has been + released over the item. In this case, the Select handler + behaves like it does with a ToolBox button. +DoubleClick() This handler is called, when an item is double-clicked. + Whether the item or the separator has been clicked, can + be determined by IsItemMode(). Normally, when a separator + is double-clicked, the optimal column width should be + calculated and should be set. +StartDrag() This handler is called, when dragging is started resp. + an item has been clicked. At the latest in this handler, + the size of the size-line should be set with + SetDragSize(), if IsItemMode() returns false. +Drag() This handler is called, when dragging is taking place. + If no size is set with SetDragSize(), this handler can + be used to draw the line in the neighbouring window by + oneself. The current dragging position can be requested + with GetDragPos(). In every case, IsItemMode() + should be checked to find out whether a separator is + dragged as well. +EndDrag() This handler is called, when a dragging process has been + stopped. If GetCurItemId() returns 0 in the EndDrag handler, + the drag process was aborted. If this is not the case and + IsItemMode() returns false, the new size of the dragged + item should be requested using GetItemSize() and it + should be taken over in the corresponding control. + If IsItemMode() returns true, GetCurItemId() + returns an Id and IsItemDrag() returns true, this + item has been dragged. In this case, the new position + should be requested using GetItemPos() and the data + in the corresponding control should be adapted. + Otherwise, the position to which the item has been dragged + could also be requested with GetItemDragPos(). + +Further methods that are important for the handler. + +GetCurItemId() Returns the id of the item, for which the handler has + currently been called. Only returns a valid id in the + handlers Select(), DoubleClick(), StartDrag(), + Drag() and EndDrag(). In the EndDrag handler, + this method returns the id of the dragged item or 0, + if the drag process has been aborted. +GetItemDragPos() Returns the position, at which an item has been moved. + HEADERBAR_ITEM_NOTFOUND is returned, if the process + has been aborted or no ItemDrag is active. +IsItemMode() This method can be used to determine whether the + handler has been called for an item or a separator. + true - handler was called for the item + false - handler was called for the separator +IsItemDrag() This method can be used to determine whether an item + has been dragged or selected. + true - item is dragged + false - item is selected +SetDragSize() This method is used to set the size of the separating + line that is drawn by the control. It should be + equivalent to the height of the neighbouring window. + The height of the HeaderBar is added automatically. + +-------------------------------------------------------------------------- + +Further methods + +SetOffset() This method sets the offset, from which on the + items are shown. This is needed when the + corresponding window is scrolled. +CalcWindowSizePixel() This method can be used to calculate the height + of the window, so that the content of the item + can be displayed. + +-------------------------------------------------------------------------- + +Tips and tricks: + +1) ContextMenu +If a context sensitive PopupMenu should be shown, the command +handler must be overlaid. Using GetItemId() and when passing the +mouse position, it can be determined whether the mouse click has been +carried out over an item resp. over which item the mouse click has been +carried out. + +2) last item +If ButtonStyle has been set, it looks better, if an empty item is +set at the end which takes up the remaining space. +In order to do that, you can insert an item with an empty string and +pass HEADERBAR_FULLSIZE as size. For such an item, you should not set +HeaderBarItemBits::CLICKABLE, but HeaderBarItemBits::FIXEDPOS. + +*************************************************************************/ + +class ImplHeadItem; + +#define WB_BOTTOMBORDER (WinBits(0x0400)) +#define WB_BUTTONSTYLE (WinBits(0x0800)) +#define WB_STDHEADERBAR (WB_BUTTONSTYLE | WB_BOTTOMBORDER) + +enum class HeaderBarItemBits +{ + NONE = 0x0000, + LEFT = 0x0001, + CENTER = 0x0002, + RIGHT = 0x0004, + LEFTIMAGE = 0x0010, + RIGHTIMAGE = 0x0020, + CLICKABLE = 0x0400, + FLAT = 0x0800, + DOWNARROW = 0x1000, + UPARROW = 0x2000, + STDSTYLE = LEFT | LEFTIMAGE | CLICKABLE, +}; + +namespace o3tl +{ + template<> struct typed_flags<HeaderBarItemBits> : is_typed_flags<HeaderBarItemBits, 0x3c37> {}; +} + +#define HEADERBAR_APPEND (sal_uInt16(0xFFFF)) +#define HEADERBAR_ITEM_NOTFOUND (sal_uInt16(0xFFFF)) +#define HEADERBAR_FULLSIZE (tools::Long(1000000000)) + +class VCL_DLLPUBLIC HeaderBar : public vcl::Window +{ +private: + std::vector<std::unique_ptr<ImplHeadItem>> mvItemList; + tools::Long mnBorderOff1; + tools::Long mnBorderOff2; + tools::Long mnOffset; + tools::Long mnDX; + tools::Long mnDY; + tools::Long mnDragSize; + tools::Long mnStartPos; + tools::Long mnDragPos; + tools::Long mnMouseOff; + sal_uInt16 mnCurItemId; + sal_uInt16 mnItemDragPos; + bool mbDragable; + bool mbDrag; + bool mbItemDrag; + bool mbOutDrag; + bool mbButtonStyle; + bool mbItemMode; + Link<HeaderBar*,void> maStartDragHdl; + Link<HeaderBar*,void> maEndDragHdl; + Link<HeaderBar*,void> maSelectHdl; + Link<HeaderBar*,void> maCreateAccessibleHdl; + + css::uno::Reference< css::accessibility::XAccessible > + mxAccessible; + + using Window::ImplInit; + VCL_DLLPRIVATE void ImplInit( WinBits nWinStyle ); + VCL_DLLPRIVATE void ImplInitSettings( bool bFont, bool bForeground, bool bBackground ); + VCL_DLLPRIVATE tools::Long ImplGetItemPos( sal_uInt16 nPos ) const; + VCL_DLLPRIVATE tools::Rectangle ImplGetItemRect( sal_uInt16 nPos ) const; + VCL_DLLPRIVATE sal_uInt16 ImplDoHitTest( const Point& rPos, tools::Long& nMouseOff, sal_uInt16& nPos ) const; + VCL_DLLPRIVATE void ImplInvertDrag( sal_uInt16 nStartPos, sal_uInt16 nEndPos ); + VCL_DLLPRIVATE void ImplDrawItem(vcl::RenderContext& rRenderContext, sal_uInt16 nPos, bool bHigh, + const tools::Rectangle& rItemRect, const tools::Rectangle* pRect); + VCL_DLLPRIVATE void ImplDrawItem(vcl::RenderContext& rRenderContext, sal_uInt16 nPos, bool bHigh, + const tools::Rectangle* pRect); + VCL_DLLPRIVATE void ImplUpdate( sal_uInt16 nPos, + bool bEnd = false ); + VCL_DLLPRIVATE void ImplStartDrag( const Point& rPos, bool bCommand ); + VCL_DLLPRIVATE void ImplDrag( const Point& rPos ); + VCL_DLLPRIVATE void ImplEndDrag( bool bCancel ); + + virtual void ApplySettings(vcl::RenderContext& rRenderContext) override; + +public: + HeaderBar( vcl::Window* pParent, WinBits nWinBits ); + virtual ~HeaderBar() override; + + virtual void MouseButtonDown( const MouseEvent& rMEvt ) override; + virtual void MouseMove( const MouseEvent& rMEvt ) override; + virtual void Tracking( const TrackingEvent& rTEvt ) override; + virtual void Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect) override; + virtual void Draw( OutputDevice* pDev, const Point& rPos,SystemTextColorFlags nFlags ) override; + virtual void Resize() override; + virtual void Command( const CommandEvent& rCEvt ) override; + virtual void RequestHelp( const HelpEvent& rHEvt ) override; + virtual void StateChanged( StateChangedType nStateChange ) override; + virtual void DataChanged( const DataChangedEvent& rDCEvt ) override; + + virtual Size GetOptimalSize() const override; + + virtual void EndDrag(); + virtual void Select(); + virtual void DoubleClick(); + + void InsertItem( sal_uInt16 nItemId, const OUString& rText, + tools::Long nSize, HeaderBarItemBits nBits = HeaderBarItemBits::STDSTYLE, + sal_uInt16 nPos = HEADERBAR_APPEND ); + void RemoveItem( sal_uInt16 nItemId ); + void MoveItem( sal_uInt16 nItemId, sal_uInt16 nNewPos ); + void Clear(); + + void SetOffset( tools::Long nNewOffset ); + void SetDragSize( tools::Long nNewSize ) { mnDragSize = nNewSize; } + + sal_uInt16 GetItemCount() const; + sal_uInt16 GetItemPos( sal_uInt16 nItemId ) const; + sal_uInt16 GetItemId( sal_uInt16 nPos ) const; + sal_uInt16 GetItemId( const Point& rPos ) const; + tools::Rectangle GetItemRect( sal_uInt16 nItemId ) const; + sal_uInt16 GetCurItemId() const { return mnCurItemId; } + bool IsItemMode() const { return mbItemMode; } + + void SetItemSize( sal_uInt16 nItemId, tools::Long nNewSize ); + tools::Long GetItemSize( sal_uInt16 nItemId ) const; + void SetItemBits( sal_uInt16 nItemId, HeaderBarItemBits nNewBits ); + HeaderBarItemBits GetItemBits( sal_uInt16 nItemId ) const; + + void SetItemText( sal_uInt16 nItemId, const OUString& rText ); + OUString GetItemText( sal_uInt16 nItemId ) const; + + OUString GetHelpText( sal_uInt16 nItemId ) const; + + Size CalcWindowSizePixel() const; + + using Window::SetHelpId; + + void SetStartDragHdl( const Link<HeaderBar*,void>& rLink ) { maStartDragHdl = rLink; } + void SetEndDragHdl( const Link<HeaderBar*,void>& rLink ) { maEndDragHdl = rLink; } + void SetSelectHdl( const Link<HeaderBar*,void>& rLink ) { maSelectHdl = rLink; } + void SetCreateAccessibleHdl( const Link<HeaderBar*,void>& rLink ) { maCreateAccessibleHdl = rLink; } + + bool IsDragable() const { return mbDragable; } + + /** Creates and returns the accessible object of the header bar. */ + virtual css::uno::Reference< css::accessibility::XAccessible > CreateAccessible() override; + void SetAccessible( const css::uno::Reference< css::accessibility::XAccessible >& ); +}; + +#endif // INCLUDED_VCL_HEADBAR_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |