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added possibility to customize the listbox colours

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21138 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2003-06-13 22:26:45 +00:00
parent 6874238c54
commit 9a9b4940a1
6 changed files with 252 additions and 56 deletions
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36
docs/latex/wx/htmllbox.tex
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@@ -51,7 +51,7 @@ Destructor cleans up whatever resources we use.
\membersection{wxHtmlListBox::Create}\label{wxhtmllistboxcreate}
\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id = wxID\_ANY}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{size\_t }{countItems = 0}, \param{long }{style = 0}, \param{const wxString\& }{name = wxVListBoxNameStr}}
\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id = wxID\_ANY}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{long }{style = 0}, \param{const wxString\& }{name = wxVListBoxNameStr}}
Creates the control and optionally sets the initial number of items in it
(it may also be set or changed later with
@@ -63,6 +63,40 @@ wxListBox styles can not be used here.
Returns {\tt true} on success or {\tt false} if the control couldn't be created
\membersection{wxHtmlListBox::GetSelectedTextBgColour}\label{wxhtmllistboxgetselectedtextbgcolour}
\constfunc{wxColour}{GetSelectedTextBgColour}{\param{const wxColour\& }{colBg}}
This virtual function may be overridden to change the appearance of the
background of the selected cells in the same way as
\helpref{GetSelectedTextColour}{wxhtmllistboxgetselectedtextcolour}.
It should be rarely, if ever, used because
\helpref{SetSelectionBackground}{wxvlistboxsetselectionbackground} allows to
change the selection background for all cells at once and doing anything more
fancy is probably going to look strangely.
\wxheading{See also}
\helpref{GetSelectedTextColour}{wxhtmllistboxgetselectedtextcolour}
\membersection{wxHtmlListBox::GetSelectedTextColour}\label{wxhtmllistboxgetselectedtextcolour}
\constfunc{wxColour}{GetSelectedTextColour}{\param{const wxColour\& }{colFg}}
This virtual function may be overridden to customize the appearance of the
selected cells. It is used to determine how the colour {\it colFg} is going to
look inside selection. By default all original colours are completely ignored
and the standard, system-dependent, selection colour is used but the program
may wish to override this to achieve some custom appearance.
\wxheading{See also}
\helpref{GetSelectedTextBgColour}{wxhtmllistboxgetselectedtextbgcolour},\\
\helpref{SetSelectionBackground}{wxvlistboxsetselectionbackground},\\
\helpref{wxSystemSettings::GetColour}{wxsystemsettingsgetcolour}
\membersection{wxHtmlListBox::OnGetItem}\label{wxhtmllistboxongetitem}

23
include/wx/htmllbox.h
View File

@@ -17,6 +17,7 @@
class WXDLLEXPORT wxHtmlCell;
class WXDLLEXPORT wxHtmlWinParser;
class WXDLLEXPORT wxHtmlListBoxCache;
class WXDLLEXPORT wxHtmlListBoxStyle;
// ----------------------------------------------------------------------------
// wxHtmlListBox
@@ -73,6 +74,20 @@ protected:
virtual wxString OnGetItemMarkup(size_t n) const;
// this method allows to customize the selection appearance: it may be used
// to specify the colour of the text which normally has the given colour
// colFg when it is inside the selection
//
// by default, the original colour is not used at all and all text has the
// same (default for this system) colour inside selection
virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
// this is the same as GetSelectedTextColour() but allows to customize the
// background colour -- this is even more rarely used as you can change it
// globally using SetSelectionBackground()
virtual wxColour GetSelectedTextBgColour(const wxColour& colBg) const;
// we implement both of these functions in terms of OnGetItem(), they are
// not supposed to be overridden by our descendants
virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const;
@@ -90,11 +105,19 @@ protected:
void CacheItem(size_t n) const;
private:
// this class caches the pre-parsed HTML to speed up display
wxHtmlListBoxCache *m_cache;
// HTML parser we use
wxHtmlWinParser *m_htmlParser;
// rendering style for the parser which allows us to customize our colours
wxHtmlListBoxStyle *m_htmlRendStyle;
// it calls our GetSelectedTextColour() and GetSelectedTextBgColour()
friend class wxHtmlListBoxStyle;
DECLARE_EVENT_TABLE()
};

10
include/wx/vlbox.h
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@@ -120,6 +120,9 @@ public:
// get the margins around each item
wxPoint GetMargins() const { return m_ptMargins; }
// get the background colour of selected cells
const wxColour& GetSelectionBackground() const { return m_colBgSel; }
// operations
// ----------
@@ -179,6 +182,9 @@ public:
void SetMargins(const wxPoint& pt);
void SetMargins(wxCoord x, wxCoord y) { SetMargins(wxPoint(x, y)); }
// change the background colour of the selected cells
void SetSelectionBackground(const wxColour& col);
protected:
// the derived class must implement this function to actually draw the item
@@ -258,6 +264,10 @@ private:
// margins
wxPoint m_ptMargins;
// the selection bg colour
wxColour m_colBgSel;
DECLARE_EVENT_TABLE()
};

162
samples/htlbox/htlbox.cpp
View File

@@ -39,6 +39,8 @@
#include "wx/dc.h"
#endif
#include "wx/colordlg.h"
#include "wx/htmllbox.h"
// you can also have a file containing HTML strings for testing, enable this if
@@ -66,56 +68,22 @@
class MyHtmlListBox : public wxHtmlListBox
{
public:
MyHtmlListBox(wxWindow *parent, bool multi = false)
: wxHtmlListBox(parent, -1, wxDefaultPosition, wxDefaultSize,
multi ? wxLB_MULTIPLE : 0)
{
SetMargins(5, 5);
MyHtmlListBox(wxWindow *parent, bool multi = false);
#ifdef USE_HTML_FILE
if ( !m_file.Open("results") )
{
wxLogError("Failed to open results file");
}
else
{
SetItemCount(m_file.GetLineCount());
}
#else
SetItemCount(10);
#endif
if ( HasMultipleSelection() )
Select(3);
else
SetSelection(3);
}
void SetChangeSelFg(bool change) { m_change = change; }
protected:
virtual wxString OnGetItem(size_t n) const
{
#ifdef USE_HTML_FILE
wxString s;
if ( m_file.IsOpened() )
s = m_file[n];
return s;
#else
int level = n % 6 + 1;
return wxString::Format(_T("<h%d><font color=#%2x%2x%2x>")
_T("Item</font> <b>%lu</b>")
_T("</h%d>"),
level,
abs(n - 192) % 256,
abs(n - 256) % 256,
abs(n - 128) % 256,
(unsigned long)n, level);
#endif
}
virtual wxString OnGetItem(size_t n) const;
// change the appearance by overriding these functions
virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
bool m_change;
#ifdef USE_HTML_FILE
wxTextFile m_file;
#endif
};
class MyFrame : public wxFrame
@@ -133,6 +101,11 @@ public:
void OnToggleMulti(wxCommandEvent& event);
void OnSelectAll(wxCommandEvent& event);
void OnSetBgCol(wxCommandEvent& event);
void OnSetSelBgCol(wxCommandEvent& event);
void OnSetSelFgCol(wxCommandEvent& event);
void OnUpdateUISelectAll(wxUpdateUIEvent& event);
void OnLboxSelect(wxCommandEvent& event);
@@ -169,6 +142,10 @@ enum
HtmlLbox_ToggleMulti,
HtmlLbox_SelectAll,
HtmlLbox_SetBgCol,
HtmlLbox_SetSelBgCol,
HtmlLbox_SetSelFgCol,
// it is important for the id corresponding to the "About" command to have
// this standard value as otherwise it won't be handled properly under Mac
// (where it is special and put into the "Apple" menu)
@@ -189,6 +166,9 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(HtmlLbox_About, MyFrame::OnAbout)
EVT_MENU(HtmlLbox_SetBgCol, MyFrame::OnSetBgCol)
EVT_MENU(HtmlLbox_SetSelBgCol, MyFrame::OnSetSelBgCol)
EVT_MENU(HtmlLbox_SetSelFgCol, MyFrame::OnSetSelFgCol)
EVT_UPDATE_UI(HtmlLbox_SelectAll, MyFrame::OnUpdateUISelectAll)
@@ -226,7 +206,7 @@ MyFrame::MyFrame()
_T("Set &margins...\tCtrl-G"),
_T("Change the margins around the items"));
menuHLbox->AppendCheckItem(HtmlLbox_DrawSeparator,
_T("Draw &separators\tCtrl-S"),
_T("&Draw separators\tCtrl-D"),
_T("Toggle drawing separators between cells"));
menuHLbox->AppendSeparator();
menuHLbox->AppendCheckItem(HtmlLbox_ToggleMulti,
@@ -234,6 +214,12 @@ MyFrame::MyFrame()
_T("Toggle multiple selection on/off"));
menuHLbox->AppendSeparator();
menuHLbox->Append(HtmlLbox_SelectAll, _T("Select &all items\tCtrl-A"));
menuHLbox->AppendSeparator();
menuHLbox->Append(HtmlLbox_SetBgCol, _T("Set &background...\tCtrl-B"));
menuHLbox->Append(HtmlLbox_SetSelBgCol,
_T("Set &selection background...\tCtrl-S"));
menuHLbox->AppendCheckItem(HtmlLbox_SetSelFgCol,
_T("Keep &foreground in selection\tCtrl-F"));
// the "About" item should be in the help menu
wxMenu *helpMenu = new wxMenu;
@@ -297,7 +283,7 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
this);
}
void MyFrame::OnSetMargins(wxCommandEvent&)
void MyFrame::OnSetMargins(wxCommandEvent& WXUNUSED(event))
{
long margin = wxGetNumberFromUser
(
@@ -328,7 +314,7 @@ void MyFrame::OnToggleMulti(wxCommandEvent& event)
sizer->Layout();
}
void MyFrame::OnSelectAll(wxCommandEvent& event)
void MyFrame::OnSelectAll(wxCommandEvent& WXUNUSED(event))
{
m_hlbox->SelectRange(0, m_hlbox->GetItemCount() - 1);
}
@@ -338,6 +324,36 @@ void MyFrame::OnUpdateUISelectAll(wxUpdateUIEvent& event)
event.Enable( m_hlbox && m_hlbox->HasMultipleSelection() );
}
void MyFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
{
wxColour col = wxGetColourFromUser(this, m_hlbox->GetBackgroundColour());
if ( col.Ok() )
{
m_hlbox->SetBackgroundColour(col);
m_hlbox->Refresh();
SetStatusText(_T("Background colour changed."));
}
}
void MyFrame::OnSetSelBgCol(wxCommandEvent& WXUNUSED(event))
{
wxColour col = wxGetColourFromUser(this, m_hlbox->GetSelectionBackground());
if ( col.Ok() )
{
m_hlbox->SetSelectionBackground(col);
m_hlbox->Refresh();
SetStatusText(_T("Selection background colour changed."));
}
}
void MyFrame::OnSetSelFgCol(wxCommandEvent& event)
{
m_hlbox->SetChangeSelFg(!event.IsChecked());
m_hlbox->Refresh();
}
// ----------------------------------------------------------------------------
// listbox event handlers
// ----------------------------------------------------------------------------
@@ -378,6 +394,34 @@ void MyFrame::OnLboxSelect(wxCommandEvent& event)
// MyHtmlListBox
// ============================================================================
MyHtmlListBox::MyHtmlListBox(wxWindow *parent, bool multi)
: wxHtmlListBox(parent, -1, wxDefaultPosition, wxDefaultSize,
multi ? wxLB_MULTIPLE : 0)
{
m_change = true;
SetMargins(5, 5);
#ifdef USE_HTML_FILE
if ( !m_file.Open("results") )
{
wxLogError("Failed to open results file");
}
else
{
SetItemCount(m_file.GetLineCount());
}
#else
SetItemCount(10);
#endif
// select something
if ( HasMultipleSelection() )
Select(3);
else
SetSelection(3);
}
void MyHtmlListBox::OnDrawSeparator(wxDC& dc, wxRect& rect, size_t) const
{
if ( ((MyFrame *)GetParent())->
@@ -389,3 +433,29 @@ void MyHtmlListBox::OnDrawSeparator(wxDC& dc, wxRect& rect, size_t) const
}
}
wxString MyHtmlListBox::OnGetItem(size_t n) const
{
#ifdef USE_HTML_FILE
wxString s;
if ( m_file.IsOpened() )
s = m_file[n];
return s;
#else
int level = n % 6 + 1;
return wxString::Format(_T("<h%d><font color=#%2x%2x%2x>")
_T("Item</font> <b>%lu</b>")
_T("</h%d>"),
level,
abs(n - 192) % 256,
abs(n - 256) % 256,
abs(n - 128) % 256,
(unsigned long)n, level);
#endif
}
wxColour MyHtmlListBox::GetSelectedTextColour(const wxColour& colFg) const
{
return m_change ? wxHtmlListBox::GetSelectedTextColour(colFg) : colFg;
}

56
src/generic/htmllbox.cpp
View File

@@ -37,8 +37,12 @@
#include "wx/html/forcelnk.h"
FORCE_WXHTML_MODULES()
// ----------------------------------------------------------------------------
// ============================================================================
// private classes
// ============================================================================
// ----------------------------------------------------------------------------
// wxHtmlListBoxCache
// ----------------------------------------------------------------------------
// this class is used by wxHtmlListBox to cache the parsed representation of
@@ -117,6 +121,32 @@ private:
size_t m_items[SIZE];
};
// ----------------------------------------------------------------------------
// wxHtmlListBoxStyle
// ----------------------------------------------------------------------------
// just forward wxDefaultHtmlRenderingStyle callbacks to the main class so that
// they could be overridden by the user code
class wxHtmlListBoxStyle : public wxDefaultHtmlRenderingStyle
{
public:
wxHtmlListBoxStyle(wxHtmlListBox& hlbox) : m_hlbox(hlbox) { }
virtual wxColour GetSelectedTextColour(const wxColour& colFg)
{
return m_hlbox.GetSelectedTextColour(colFg);
}
virtual wxColour GetSelectedTextBgColour(const wxColour& colBg)
{
return m_hlbox.GetSelectedTextBgColour(colBg);
}
private:
const wxHtmlListBox& m_hlbox;
};
// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------
@@ -136,6 +166,7 @@ END_EVENT_TABLE()
void wxHtmlListBox::Init()
{
m_htmlParser = NULL;
m_htmlRendStyle = new wxHtmlListBoxStyle(*this);
m_cache = new wxHtmlListBoxCache;
}
@@ -152,11 +183,30 @@ bool wxHtmlListBox::Create(wxWindow *parent,
wxHtmlListBox::~wxHtmlListBox()
{
delete m_cache;
if ( m_htmlParser )
{
delete m_htmlParser->GetDC();
delete m_htmlParser;
}
delete m_htmlRendStyle;
}
// ----------------------------------------------------------------------------
// wxHtmlListBox appearance
// ----------------------------------------------------------------------------
wxColour wxHtmlListBox::GetSelectedTextColour(const wxColour& colFg) const
{
return m_htmlRendStyle->
wxDefaultHtmlRenderingStyle::GetSelectedTextColour(colFg);
}
wxColour
wxHtmlListBox::GetSelectedTextBgColour(const wxColour& WXUNUSED(colBg)) const
{
return GetSelectionBackground();
}
// ----------------------------------------------------------------------------
@@ -231,7 +281,9 @@ void wxHtmlListBox::OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const
wxHtmlSelection htmlSel;
htmlSel.Set(wxPoint(0, 0), cell, wxPoint(INT_MAX, INT_MAX), cell);
htmlRendInfo.SetSelection(&htmlSel);
//htmlRendInfo.SetSelectionState(wxHTML_SEL_IN);
if ( m_htmlRendStyle )
htmlRendInfo.SetStyle(m_htmlRendStyle);
htmlRendInfo.GetState().SetSelectionState(wxHTML_SEL_IN);
}
// note that we can't stop drawing exactly at the window boundary as then

21
src/generic/vlbox.cpp
View File

@@ -69,11 +69,12 @@ bool wxVListBox::Create(wxWindow *parent,
if ( !wxVScrolledWindow::Create(parent, id, pos, size, style, name) )
return false;
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX));
if ( style & wxLB_MULTIPLE )
m_selStore = new wxSelectionStore;
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX));
m_colBgSel = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
return true;
}
@@ -282,7 +283,7 @@ int wxVListBox::GetNextSelected(unsigned long& cookie) const
}
// ----------------------------------------------------------------------------
// wxVListBox painting
// wxVListBox appearance parameters
// ----------------------------------------------------------------------------
void wxVListBox::SetMargins(const wxPoint& pt)
@@ -295,6 +296,15 @@ void wxVListBox::SetMargins(const wxPoint& pt)
}
}
void wxVListBox::SetSelectionBackground(const wxColour& col)
{
m_colBgSel = col;
}
// ----------------------------------------------------------------------------
// wxVListBox painting
// ----------------------------------------------------------------------------
wxCoord wxVListBox::OnGetLineHeight(size_t line) const
{
return OnMeasureItem(line) + 2*m_ptMargins.y;
@@ -337,10 +347,7 @@ void wxVListBox::OnPaint(wxPaintEvent& event)
{
if ( isSelected )
{
wxBrush brush(wxSystemSettings::
GetColour(wxSYS_COLOUR_HIGHLIGHT),
wxSOLID);
dc.SetBrush(brush);
dc.SetBrush(wxBrush(m_colBgSel, wxSOLID));
}
else // !selected
{