X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e0c6027b5a0af9050eca56774967437a66241026..a63d48fa138e9eaa3079172ace9a804ba5b0415e:/src/generic/htmllbox.cpp diff --git a/src/generic/htmllbox.cpp b/src/generic/htmllbox.cpp index c38650ba37..91be6e7ac7 100644 --- a/src/generic/htmllbox.cpp +++ b/src/generic/htmllbox.cpp @@ -25,59 +25,147 @@ #endif #ifndef WX_PRECOMP + #include "wx/dcclient.h" #endif //WX_PRECOMP +#if wxUSE_HTML + #include "wx/htmllbox.h" #include "wx/html/htmlcell.h" #include "wx/html/winpars.h" -// ---------------------------------------------------------------------------- +// this hack forces the linker to always link in m_* files +#include "wx/html/forcelnk.h" +FORCE_WXHTML_MODULES() + +// ============================================================================ // private classes +// ============================================================================ + +// ---------------------------------------------------------------------------- +// wxHtmlListBoxCache // ---------------------------------------------------------------------------- // this class is used by wxHtmlListBox to cache the parsed representation of // the items to avoid doing it anew each time an item must be drawn -// -// TODO: extend the class to cache more than item class wxHtmlListBoxCache { public: - wxHtmlListBoxCache() { m_cell = NULL; } - ~wxHtmlListBoxCache() { delete m_cell; } + wxHtmlListBoxCache() + { + for ( size_t n = 0; n < SIZE; n++ ) + { + m_items[n] = (size_t)-1; + m_cells[n] = NULL; + } - // returns true if we already have this item cached - bool Has(size_t n) const { return m_cell && n == m_item; } + m_next = 0; + } - // ensure that the item is cached - void Store(size_t n, wxHtmlCell *cell) + ~wxHtmlListBoxCache() { - m_item = n; + for ( size_t n = 0; n < SIZE; n++ ) + { + delete m_cells[n]; + } + } - delete m_cell; - m_cell = cell; + // completely invalidate the cache + void Clear() + { + for ( size_t n = 0; n < SIZE; n++ ) + { + m_items[n] = (size_t)-1; + delete m_cells[n]; + m_cells[n] = NULL; + } } // return the cached cell for this index or NULL if none - wxHtmlCell *Get(size_t n) const + wxHtmlCell *Get(size_t item) const { - // we could be reading uninitialized m_item here but the code is still - // correct - return n == m_item ? m_cell : NULL; + for ( size_t n = 0; n < SIZE; n++ ) + { + if ( m_items[n] == item ) + return m_cells[n]; + } + + return NULL; + } + + // returns true if we already have this item cached + bool Has(size_t item) const { return Get(item) != NULL; } + + // ensure that the item is cached + void Store(size_t item, wxHtmlCell *cell) + { + delete m_cells[m_next]; + m_cells[m_next] = cell; + m_items[m_next] = item; + + // advance to the next item wrapping around if there are no more + if ( ++m_next == SIZE ) + m_next = 0; } private: + // the max number of the items we cache + enum { SIZE = 50 }; + + // the index of the LRU (oldest) cell + size_t m_next; + // the parsed representation of the cached item or NULL - wxHtmlCell *m_cell; + wxHtmlCell *m_cells[SIZE]; - // the index of the currently cached item (only valid if m_cell != NULL) - size_t m_item; + // the index of the currently cached item (only valid if m_cells != NULL) + 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; + + DECLARE_NO_COPY_CLASS(wxHtmlListBoxStyle) +}; + + +// ---------------------------------------------------------------------------- +// event tables +// ---------------------------------------------------------------------------- + +BEGIN_EVENT_TABLE(wxHtmlListBox, wxVListBox) + EVT_SIZE(wxHtmlListBox::OnSize) +END_EVENT_TABLE() + // ============================================================================ // implementation // ============================================================================ +IMPLEMENT_ABSTRACT_CLASS(wxHtmlListBox, wxVListBox) + + // ---------------------------------------------------------------------------- // wxHtmlListBox creation // ---------------------------------------------------------------------------- @@ -85,6 +173,7 @@ private: void wxHtmlListBox::Init() { m_htmlParser = NULL; + m_htmlRendStyle = new wxHtmlListBoxStyle(*this); m_cache = new wxHtmlListBoxCache; } @@ -92,21 +181,39 @@ bool wxHtmlListBox::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, const wxSize& size, - size_t countItems, long style, const wxString& name) { - return wxVListBox::Create(parent, id, pos, size, countItems, style, name); + return wxVListBox::Create(parent, id, pos, size, style, name); } 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(); } // ---------------------------------------------------------------------------- @@ -121,6 +228,10 @@ wxString wxHtmlListBox::OnGetItemMarkup(size_t n) const return OnGetItem(n); } +// ---------------------------------------------------------------------------- +// wxHtmlListBox cache handling +// ---------------------------------------------------------------------------- + void wxHtmlListBox::CacheItem(size_t n) const { if ( !m_cache->Has(n) ) @@ -137,12 +248,35 @@ void wxHtmlListBox::CacheItem(size_t n) const Parse(OnGetItemMarkup(n)); wxCHECK_RET( cell, _T("wxHtmlParser::Parse() returned NULL?") ); - cell->Layout(GetClientSize().x); + cell->Layout(GetClientSize().x - 2*GetMargins().x); m_cache->Store(n, cell); } } +void wxHtmlListBox::OnSize(wxSizeEvent& event) +{ + // we need to relayout all the cached cells + m_cache->Clear(); + + event.Skip(); +} + +void wxHtmlListBox::RefreshAll() +{ + m_cache->Clear(); + + wxVListBox::RefreshAll(); +} + +void wxHtmlListBox::SetItemCount(size_t count) +{ + // the items are going to change, forget the old ones + m_cache->Clear(); + + wxVListBox::SetItemCount(count); +} + // ---------------------------------------------------------------------------- // wxHtmlListBox implementation of wxVListBox pure virtuals // ---------------------------------------------------------------------------- @@ -154,23 +288,23 @@ void wxHtmlListBox::OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const wxHtmlCell *cell = m_cache->Get(n); wxCHECK_RET( cell, _T("this cell should be cached!") ); + wxHtmlRenderingInfo htmlRendInfo; + // draw the selected cell in selected state if ( IsSelected(n) ) { wxHtmlSelection htmlSel; htmlSel.Set(wxPoint(0, 0), cell, wxPoint(INT_MAX, INT_MAX), cell); - wxHtmlRenderingState htmlRendState(&htmlSel); - htmlRendState.SetSelectionState(wxHTML_SEL_IN); - cell->Draw(dc, rect.x, rect.y, 0, INT_MAX, htmlRendState); - } - else - { - // note that we can't stop drawing exactly at the window boundary as then - // even the visible cells part could be not drawn, so always draw the - // entire cell - wxHtmlRenderingState htmlRendState(NULL); - cell->Draw(dc, rect.x, rect.y, 0, INT_MAX, htmlRendState); + htmlRendInfo.SetSelection(&htmlSel); + 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 + // even the visible cells part could be not drawn, so always draw the + // entire cell + cell->Draw(dc, rect.x+2, rect.y+2, 0, INT_MAX, htmlRendInfo); } wxCoord wxHtmlListBox::OnMeasureItem(size_t n) const @@ -180,6 +314,7 @@ wxCoord wxHtmlListBox::OnMeasureItem(size_t n) const wxHtmlCell *cell = m_cache->Get(n); wxCHECK_MSG( cell, 0, _T("this cell should be cached!") ); - return cell->GetHeight() + cell->GetDescent(); + return cell->GetHeight() + cell->GetDescent() + 4; } +#endif