385acccebb
This fixes warnings C4244 ('=': conversion from 'int' to 'xxx', possible
loss of data) and C4267 (conversion from 'size_t' to 'int', possible
loss of data) from the MSVC compiler (Version 19.29.30136 for x64) when
compiling in 64-bits.
Note that these warnings are disabled in wx/defs.h by default and so
only happen when saving/restoring the warning settings using the
appropriate pragmas before/after including wx headers.
Closes #22462.
331 lines
13 KiB
C++
331 lines
13 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/htmllbox.h
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// Purpose: wxHtmlListBox is a listbox whose items are wxHtmlCells
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 31.05.03
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_HTMLLBOX_H_
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#define _WX_HTMLLBOX_H_
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#include "wx/defs.h"
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#if wxUSE_HTML
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#include "wx/vlbox.h" // base class
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#include "wx/html/htmlwin.h"
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#include "wx/ctrlsub.h"
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#if wxUSE_FILESYSTEM
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#include "wx/filesys.h"
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#endif // wxUSE_FILESYSTEM
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class WXDLLIMPEXP_FWD_HTML wxHtmlCell;
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class WXDLLIMPEXP_FWD_HTML wxHtmlWinParser;
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class WXDLLIMPEXP_FWD_HTML wxHtmlListBoxCache;
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class WXDLLIMPEXP_FWD_HTML wxHtmlListBoxStyle;
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extern WXDLLIMPEXP_DATA_HTML(const char) wxHtmlListBoxNameStr[];
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extern WXDLLIMPEXP_DATA_HTML(const char) wxSimpleHtmlListBoxNameStr[];
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// ----------------------------------------------------------------------------
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// wxHtmlListBox
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_HTML wxHtmlListBox : public wxVListBox,
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public wxHtmlWindowInterface,
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public wxHtmlWindowMouseHelper
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{
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wxDECLARE_ABSTRACT_CLASS(wxHtmlListBox);
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public:
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// constructors and such
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// ---------------------
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// default constructor, you must call Create() later
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wxHtmlListBox();
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// normal constructor which calls Create() internally
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wxHtmlListBox(wxWindow *parent,
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wxWindowID id = wxID_ANY,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxString& name = wxASCII_STR(wxHtmlListBoxNameStr));
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// really creates the control and sets the initial number of items in it
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// (which may be changed later with SetItemCount())
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//
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// the only special style which may be specified here is wxLB_MULTIPLE
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//
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// returns true on success or false if the control couldn't be created
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bool Create(wxWindow *parent,
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wxWindowID id = wxID_ANY,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxString& name = wxASCII_STR(wxHtmlListBoxNameStr));
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// destructor cleans up whatever resources we use
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virtual ~wxHtmlListBox();
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// override some base class virtuals
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virtual void RefreshRow(size_t line) wxOVERRIDE;
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virtual void RefreshRows(size_t from, size_t to) wxOVERRIDE;
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virtual void RefreshAll() wxOVERRIDE;
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virtual void SetItemCount(size_t count) wxOVERRIDE;
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#if wxUSE_FILESYSTEM
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// retrieve the file system used by the wxHtmlWinParser: if you use
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// relative paths in your HTML, you should use its ChangePathTo() method
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wxFileSystem& GetFileSystem() { return m_filesystem; }
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const wxFileSystem& GetFileSystem() const { return m_filesystem; }
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#endif // wxUSE_FILESYSTEM
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virtual void OnInternalIdle() wxOVERRIDE;
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protected:
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// this method must be implemented in the derived class and should return
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// the body (i.e. without <html>) of the HTML for the given item
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virtual wxString OnGetItem(size_t n) const = 0;
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// this function may be overridden to decorate HTML returned by OnGetItem()
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virtual wxString OnGetItemMarkup(size_t n) const;
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// this method allows to customize the selection appearance: it may be used
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// to specify the colour of the text which normally has the given colour
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// colFg when it is inside the selection
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//
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// by default, the original colour is not used at all and all text has the
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// same (default for this system) colour inside selection
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virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
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// this is the same as GetSelectedTextColour() but allows to customize the
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// background colour -- this is even more rarely used as you can change it
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// globally using SetSelectionBackground()
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virtual wxColour GetSelectedTextBgColour(const wxColour& colBg) const;
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// we implement both of these functions in terms of OnGetItem(), they are
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// not supposed to be overridden by our descendants
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virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const wxOVERRIDE;
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virtual wxCoord OnMeasureItem(size_t n) const wxOVERRIDE;
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// override this one to draw custom background for selected items correctly
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virtual void OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const wxOVERRIDE;
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// this method may be overridden to handle clicking on a link in the
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// listbox (by default, clicks on links are simply ignored)
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virtual void OnLinkClicked(size_t n, const wxHtmlLinkInfo& link);
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// event handlers
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void OnSize(wxSizeEvent& event);
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void OnMouseMove(wxMouseEvent& event);
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void OnLeftDown(wxMouseEvent& event);
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// common part of all ctors
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void Init();
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// ensure that the given item is cached
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void CacheItem(size_t n) const;
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private:
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// wxHtmlWindowInterface methods:
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virtual void SetHTMLWindowTitle(const wxString& title) wxOVERRIDE;
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virtual void OnHTMLLinkClicked(const wxHtmlLinkInfo& link) wxOVERRIDE;
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virtual wxHtmlOpeningStatus OnHTMLOpeningURL(wxHtmlURLType type,
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const wxString& url,
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wxString *redirect) const wxOVERRIDE;
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virtual wxPoint HTMLCoordsToWindow(wxHtmlCell *cell,
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const wxPoint& pos) const wxOVERRIDE;
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virtual wxWindow* GetHTMLWindow() wxOVERRIDE;
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virtual wxColour GetHTMLBackgroundColour() const wxOVERRIDE;
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virtual void SetHTMLBackgroundColour(const wxColour& clr) wxOVERRIDE;
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virtual void SetHTMLBackgroundImage(const wxBitmapBundle& bmpBg) wxOVERRIDE;
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virtual void SetHTMLStatusText(const wxString& text) wxOVERRIDE;
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virtual wxCursor GetHTMLCursor(HTMLCursor type) const wxOVERRIDE;
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// returns index of item that contains given HTML cell
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size_t GetItemForCell(const wxHtmlCell *cell) const;
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// Create the cell for the given item, caller is responsible for freeing it.
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wxHtmlCell* CreateCellForItem(size_t n) const;
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// return physical coordinates of root wxHtmlCell of n-th item
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wxPoint GetRootCellCoords(size_t n) const;
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// Converts physical coordinates stored in @a pos into coordinates
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// relative to the root cell of the item under mouse cursor, if any. If no
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// cell is found under the cursor, returns false. Otherwise stores the new
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// coordinates back into @a pos and pointer to the cell under cursor into
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// @a cell and returns true.
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bool PhysicalCoordsToCell(wxPoint& pos, wxHtmlCell*& cell) const;
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// The opposite of PhysicalCoordsToCell: converts coordinates relative to
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// given cell to physical coordinates in the window
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wxPoint CellCoordsToPhysical(const wxPoint& pos, wxHtmlCell *cell) const;
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private:
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// this class caches the pre-parsed HTML to speed up display
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wxHtmlListBoxCache *m_cache;
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// HTML parser we use
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wxHtmlWinParser *m_htmlParser;
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#if wxUSE_FILESYSTEM
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// file system used by m_htmlParser
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wxFileSystem m_filesystem;
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#endif // wxUSE_FILESYSTEM
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// rendering style for the parser which allows us to customize our colours
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wxHtmlListBoxStyle *m_htmlRendStyle;
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// it calls our GetSelectedTextColour() and GetSelectedTextBgColour()
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friend class wxHtmlListBoxStyle;
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friend class wxHtmlListBoxWinInterface;
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wxDECLARE_EVENT_TABLE();
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wxDECLARE_NO_COPY_CLASS(wxHtmlListBox);
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};
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// ----------------------------------------------------------------------------
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// wxSimpleHtmlListBox
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// ----------------------------------------------------------------------------
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#define wxHLB_DEFAULT_STYLE wxBORDER_SUNKEN
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#define wxHLB_MULTIPLE wxLB_MULTIPLE
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class WXDLLIMPEXP_HTML wxSimpleHtmlListBox :
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public wxWindowWithItems<wxHtmlListBox, wxItemContainer>
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{
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wxDECLARE_ABSTRACT_CLASS(wxSimpleHtmlListBox);
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public:
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// wxListbox-compatible constructors
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// ---------------------------------
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wxSimpleHtmlListBox() { }
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wxSimpleHtmlListBox(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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int n = 0, const wxString choices[] = NULL,
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long style = wxHLB_DEFAULT_STYLE,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxASCII_STR(wxSimpleHtmlListBoxNameStr))
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{
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Create(parent, id, pos, size, n, choices, style, validator, name);
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}
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wxSimpleHtmlListBox(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = wxHLB_DEFAULT_STYLE,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxASCII_STR(wxSimpleHtmlListBoxNameStr))
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{
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Create(parent, id, pos, size, choices, style, validator, name);
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}
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bool Create(wxWindow *parent, wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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int n = 0, const wxString choices[] = NULL,
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long style = wxHLB_DEFAULT_STYLE,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxASCII_STR(wxSimpleHtmlListBoxNameStr));
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bool Create(wxWindow *parent, wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = wxHLB_DEFAULT_STYLE,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxASCII_STR(wxSimpleHtmlListBoxNameStr));
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virtual ~wxSimpleHtmlListBox();
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// these must be overloaded otherwise the compiler will complain
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// about wxItemContainerImmutable::[G|S]etSelection being pure virtuals...
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void SetSelection(int n) wxOVERRIDE
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{ wxVListBox::SetSelection(n); }
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int GetSelection() const wxOVERRIDE
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{ return wxVListBox::GetSelection(); }
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// accessing strings
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// -----------------
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virtual unsigned int GetCount() const wxOVERRIDE
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{ return static_cast<unsigned int>(m_items.GetCount()); }
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virtual wxString GetString(unsigned int n) const wxOVERRIDE;
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// override default unoptimized wxItemContainer::GetStrings() function
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wxArrayString GetStrings() const
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{ return m_items; }
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virtual void SetString(unsigned int n, const wxString& s) wxOVERRIDE;
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// resolve ambiguity between wxItemContainer and wxVListBox versions
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void Clear() wxOVERRIDE;
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protected:
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virtual int DoInsertItems(const wxArrayStringsAdapter & items,
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unsigned int pos,
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void **clientData, wxClientDataType type) wxOVERRIDE;
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virtual void DoSetItemClientData(unsigned int n, void *clientData) wxOVERRIDE
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{ m_HTMLclientData[n] = clientData; }
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virtual void *DoGetItemClientData(unsigned int n) const wxOVERRIDE
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{ return m_HTMLclientData[n]; }
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// wxItemContainer methods
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virtual void DoClear() wxOVERRIDE;
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virtual void DoDeleteOneItem(unsigned int n) wxOVERRIDE;
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// calls wxHtmlListBox::SetItemCount() and RefreshAll()
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void UpdateCount();
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// override these functions just to change their visibility: users of
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// wxSimpleHtmlListBox shouldn't be allowed to call them directly!
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virtual void SetItemCount(size_t count) wxOVERRIDE
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{ wxHtmlListBox::SetItemCount(count); }
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virtual void SetRowCount(size_t count)
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{ wxHtmlListBox::SetRowCount(count); }
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virtual wxString OnGetItem(size_t n) const wxOVERRIDE
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{ return m_items[n]; }
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virtual void InitEvent(wxCommandEvent& event, int n) wxOVERRIDE
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{
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// we're not a virtual control and we can include the string
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// of the item which was clicked:
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event.SetString(m_items[n]);
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wxVListBox::InitEvent(event, n);
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}
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wxArrayString m_items;
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wxArrayPtrVoid m_HTMLclientData;
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// Note: For the benefit of old compilers (like gcc-2.8) this should
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// not be named m_clientdata as that clashes with the name of an
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// anonymous struct member in wxEvtHandler, which we derive from.
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wxDECLARE_NO_COPY_CLASS(wxSimpleHtmlListBox);
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};
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#endif // wxUSE_HTML
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#endif // _WX_HTMLLBOX_H_
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