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wxWidgets/src/gtk/listbox.cpp
Paul Cornett fe1737d399 Reduce the scope of some local variables
2019-04-05 10:44:02 -07:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/listbox.cpp
// Purpose:
// Author: Robert Roebling
// Modified By: Ryan Norton (GtkTreeView implementation)
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_LISTBOX
#include "wx/listbox.h"
#ifndef WX_PRECOMP
#include "wx/dynarray.h"
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/utils.h"
#include "wx/settings.h"
#include "wx/checklst.h"
#include "wx/arrstr.h"
#endif
#if wxUSE_TOOLTIPS
#include "wx/tooltip.h"
#endif
#include "wx/gtk/private.h"
#include "wx/gtk/private/eventsdisabler.h"
#include "wx/gtk/private/object.h"
#include "wx/gtk/private/treeentry_gtk.h"
#include "wx/gtk/private/treeview.h"
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
extern bool g_blockEventsOnScroll;
//-----------------------------------------------------------------------------
// Macro to tell which row the strings are in (1 if native checklist, 0 if not)
//-----------------------------------------------------------------------------
#if wxUSE_CHECKLISTBOX
# define WXLISTBOX_DATACOLUMN_ARG(x) (x->m_hasCheckBoxes ? 1 : 0)
#else
# define WXLISTBOX_DATACOLUMN_ARG(x) (0)
#endif // wxUSE_CHECKLISTBOX
#define WXLISTBOX_DATACOLUMN WXLISTBOX_DATACOLUMN_ARG(this)
// ----------------------------------------------------------------------------
// helper functions
// ----------------------------------------------------------------------------
namespace
{
// Return the entry for the given listbox item.
wxTreeEntry *
GetEntry(GtkListStore *store, GtkTreeIter *iter, const wxListBox *listbox)
{
wxTreeEntry* entry;
gtk_tree_model_get(GTK_TREE_MODEL(store),
iter,
WXLISTBOX_DATACOLUMN_ARG(listbox),
&entry,
-1);
g_object_unref(entry);
return entry;
}
} // anonymous namespace
//-----------------------------------------------------------------------------
// "row-activated"
//-----------------------------------------------------------------------------
extern "C" {
static void
gtk_listbox_row_activated_callback(GtkTreeView * WXUNUSED(treeview),
GtkTreePath *path,
GtkTreeViewColumn * WXUNUSED(col),
wxListBox *listbox)
{
if (g_blockEventsOnDrag) return;
if (g_blockEventsOnScroll) return;
// This is triggered by either a double-click or a space press
int sel = gtk_tree_path_get_indices(path)[0];
listbox->GTKOnActivated(sel);
}
}
//-----------------------------------------------------------------------------
// "changed"
//-----------------------------------------------------------------------------
extern "C" {
static void
gtk_listitem_changed_callback(GtkTreeSelection * WXUNUSED(selection),
wxListBox *listbox )
{
if (g_blockEventsOnDrag) return;
listbox->GTKOnSelectionChanged();
}
}
//-----------------------------------------------------------------------------
// "key_press_event"
//-----------------------------------------------------------------------------
extern "C" {
static gboolean
gtk_listbox_key_press_callback( GtkWidget *WXUNUSED(widget),
GdkEventKey *gdk_event,
wxListBox *listbox )
{
if ((gdk_event->keyval == GDK_KEY_Return) ||
(gdk_event->keyval == GDK_KEY_ISO_Enter) ||
(gdk_event->keyval == GDK_KEY_KP_Enter))
{
int index = -1;
if (!listbox->HasMultipleSelection())
index = listbox->GetSelection();
else
{
wxArrayInt sels;
if (listbox->GetSelections( sels ) < 1)
return FALSE;
index = sels[0];
}
if (index != wxNOT_FOUND)
{
listbox->GTKOnActivated(index);
// wxMac and wxMSW always invoke default action
// if (!ret)
{
// DClick not handled -> invoke default action
wxWindow *tlw = wxGetTopLevelParent( listbox );
if (tlw)
{
GtkWindow *gtk_window = GTK_WINDOW( tlw->GetHandle() );
if (gtk_window)
gtk_window_activate_default( gtk_window );
}
}
// Always intercept, otherwise we'd get another dclick
// event from row_activated
return TRUE;
}
}
return FALSE;
}
}
//-----------------------------------------------------------------------------
// GtkTreeEntry destruction (to destroy client data)
//-----------------------------------------------------------------------------
extern "C" {
static void tree_entry_destroy_cb(wxTreeEntry* entry,
wxListBox* listbox)
{
if (listbox->HasClientObjectData())
{
void* userdata = wx_tree_entry_get_userdata(entry);
if (userdata)
delete (wxClientData *)userdata;
}
}
}
//-----------------------------------------------------------------------------
// Sorting callback (standard CmpNoCase return value)
//-----------------------------------------------------------------------------
extern "C" {
static int
sort_callback(GtkTreeModel*, GtkTreeIter* a, GtkTreeIter* b, void* data)
{
wxListBox* listbox = static_cast<wxListBox*>(data);
wxTreeEntry* entry1 = GetEntry(listbox->m_liststore, a, listbox);
wxCHECK_MSG(entry1, 0, wxT("Could not get first entry"));
wxTreeEntry* entry2 = GetEntry(listbox->m_liststore, b, listbox);
wxCHECK_MSG(entry2, 0, wxT("Could not get second entry"));
//We compare collate keys here instead of calling g_utf8_collate
//as it is rather slow (and even the docs recommend this)
return strcmp(wx_tree_entry_get_collate_key(entry1),
wx_tree_entry_get_collate_key(entry2)) >= 0;
}
}
//-----------------------------------------------------------------------------
// Searching callback (TRUE == not equal, FALSE == equal)
//-----------------------------------------------------------------------------
extern "C" {
static gboolean
search_callback(GtkTreeModel*, int, const char* key, GtkTreeIter* iter, void* data)
{
wxListBox* listbox = static_cast<wxListBox*>(data);
wxTreeEntry* entry = GetEntry(listbox->m_liststore, iter, listbox);
wxCHECK_MSG(entry, true, "could not get entry");
wxGtkString keyc(g_utf8_collate_key(key, -1));
return strncmp(keyc, wx_tree_entry_get_collate_key(entry), strlen(keyc));
}
}
//-----------------------------------------------------------------------------
// wxListBox
//-----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// construction
// ----------------------------------------------------------------------------
void wxListBox::Init()
{
m_treeview = NULL;
#if wxUSE_CHECKLISTBOX
m_hasCheckBoxes = false;
#endif // wxUSE_CHECKLISTBOX
}
bool wxListBox::Create( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size,
const wxArrayString& choices,
long style, const wxValidator& validator,
const wxString &name )
{
wxCArrayString chs(choices);
return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
style, validator, name );
}
bool wxListBox::Create( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size,
int n, const wxString choices[],
long style, const wxValidator& validator,
const wxString &name )
{
if (!PreCreation( parent, pos, size ) ||
!CreateBase( parent, id, pos, size, style, validator, name ))
{
wxFAIL_MSG( wxT("wxListBox creation failed") );
return false;
}
m_widget = gtk_scrolled_window_new( NULL, NULL );
g_object_ref(m_widget);
GtkPolicyType vPolicy = GTK_POLICY_AUTOMATIC;
if (style & wxLB_ALWAYS_SB)
vPolicy = GTK_POLICY_ALWAYS;
else if (style & wxLB_NO_SB)
vPolicy = GTK_POLICY_NEVER;
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(m_widget),
GTK_POLICY_AUTOMATIC, vPolicy);
GTKScrolledWindowSetBorder(m_widget, style);
m_treeview = GTK_TREE_VIEW( gtk_tree_view_new( ) );
//wxListBox doesn't have a header :)
//NB: If enabled SetFirstItem doesn't work correctly
gtk_tree_view_set_headers_visible(m_treeview, FALSE);
#if wxUSE_CHECKLISTBOX
if(m_hasCheckBoxes)
((wxCheckListBox*)this)->DoCreateCheckList();
#endif // wxUSE_CHECKLISTBOX
// Create the data column
gtk_tree_view_insert_column_with_attributes(m_treeview, -1, "",
gtk_cell_renderer_text_new(),
"text",
WXLISTBOX_DATACOLUMN, NULL);
// Now create+set the model (GtkListStore) - first argument # of columns
#if wxUSE_CHECKLISTBOX
if(m_hasCheckBoxes)
m_liststore = gtk_list_store_new(2, G_TYPE_BOOLEAN,
WX_TYPE_TREE_ENTRY);
else
#endif
m_liststore = gtk_list_store_new(1, WX_TYPE_TREE_ENTRY);
gtk_tree_view_set_model(m_treeview, GTK_TREE_MODEL(m_liststore));
g_object_unref (m_liststore); //free on treeview destruction
// Disable the pop-up textctrl that enables searching - note that
// the docs specify that even if this disabled (which we are doing)
// the user can still have it through the start-interactive-search
// key binding...either way we want to provide a searchequal callback
// NB: If this is enabled a doubleclick event (activate) gets sent
// on a successful search
gtk_tree_view_set_search_column(m_treeview, WXLISTBOX_DATACOLUMN);
gtk_tree_view_set_search_equal_func(m_treeview, search_callback, this, NULL);
gtk_tree_view_set_enable_search(m_treeview, FALSE);
GtkSelectionMode mode;
// GTK_SELECTION_EXTENDED is a deprecated synonym for GTK_SELECTION_MULTIPLE
if ( style & (wxLB_MULTIPLE | wxLB_EXTENDED) )
{
mode = GTK_SELECTION_MULTIPLE;
}
else // no multi-selection flags specified
{
m_windowStyle |= wxLB_SINGLE;
// Notice that we must use BROWSE and not GTK_SELECTION_SINGLE because
// the latter allows to not select any items at all while a single
// selection listbox is supposed to always have a selection (at least
// once the user selected something, it might not have any initially).
mode = GTK_SELECTION_BROWSE;
}
GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
gtk_tree_selection_set_mode( selection, mode );
// Handle sortable stuff
if(HasFlag(wxLB_SORT))
{
// Setup sorting in ascending (wx) order
gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(m_liststore),
WXLISTBOX_DATACOLUMN,
GTK_SORT_ASCENDING);
// Set the sort callback
gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(m_liststore),
WXLISTBOX_DATACOLUMN,
sort_callback,
this, //userdata
NULL //"destroy notifier"
);
}
gtk_container_add (GTK_CONTAINER (m_widget), GTK_WIDGET(m_treeview) );
gtk_widget_show( GTK_WIDGET(m_treeview) );
m_focusWidget = GTK_WIDGET(m_treeview);
Append(n, choices); // insert initial items
// generate dclick events
g_signal_connect_after(m_treeview, "row-activated",
G_CALLBACK(gtk_listbox_row_activated_callback), this);
// for intercepting dclick generation by <ENTER>
g_signal_connect (m_treeview, "key_press_event",
G_CALLBACK (gtk_listbox_key_press_callback),
this);
m_parent->DoAddChild( this );
PostCreation(size);
SetInitialSize(size); // need this too because this is a wxControlWithItems
g_signal_connect_after (selection, "changed",
G_CALLBACK (gtk_listitem_changed_callback), this);
return true;
}
wxListBox::~wxListBox()
{
if (m_treeview)
{
GTKDisconnect(m_treeview);
GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
if (selection)
GTKDisconnect(selection);
}
Clear();
}
void wxListBox::GTKDisableEvents()
{
GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
g_signal_handlers_block_by_func(selection,
(gpointer) gtk_listitem_changed_callback, this);
}
void wxListBox::GTKEnableEvents()
{
GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
g_signal_handlers_unblock_by_func(selection,
(gpointer) gtk_listitem_changed_callback, this);
UpdateOldSelections();
}
void wxListBox::Update()
{
wxWindow::Update();
if (m_treeview)
gdk_window_process_updates(gtk_widget_get_window(GTK_WIDGET(m_treeview)), true);
}
// ----------------------------------------------------------------------------
// adding items
// ----------------------------------------------------------------------------
int wxListBox::DoInsertItems(const wxArrayStringsAdapter& items,
unsigned int pos,
void **clientData,
wxClientDataType type)
{
wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
InvalidateBestSize();
int n = DoInsertItemsInLoop(items, pos, clientData, type);
UpdateOldSelections();
return n;
}
int wxListBox::DoInsertOneItem(const wxString& item, unsigned int pos)
{
wxTreeEntry* entry = wx_tree_entry_new();
wx_tree_entry_set_label(entry, wxGTK_CONV(item));
wx_tree_entry_set_destroy_func(entry, (wxTreeEntryDestroy)tree_entry_destroy_cb, this);
#if wxUSE_CHECKLISTBOX
int entryCol = int(m_hasCheckBoxes);
#else
int entryCol = 0;
#endif
GtkTreeIter iter;
gtk_list_store_insert_with_values(m_liststore, &iter, pos, entryCol, entry, -1);
g_object_unref(entry);
if (HasFlag(wxLB_SORT))
pos = GTKGetIndexFor(iter);
return pos;
}
// ----------------------------------------------------------------------------
// deleting items
// ----------------------------------------------------------------------------
void wxListBox::DoClear()
{
wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
{
wxGtkEventsDisabler<wxListBox> noEvents(this);
InvalidateBestSize();
gtk_list_store_clear( m_liststore ); /* well, THAT was easy :) */
}
UpdateOldSelections();
}
void wxListBox::DoDeleteOneItem(unsigned int n)
{
wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
InvalidateBestSize();
wxGtkEventsDisabler<wxListBox> noEvents(this);
GtkTreeIter iter;
wxCHECK_RET( GTKGetIteratorFor(n, &iter), wxT("wrong listbox index") );
// this returns false if iter is invalid (e.g. deleting item at end) but
// since we don't use iter, we ignore the return value
gtk_list_store_remove(m_liststore, &iter);
#ifdef __WXGTK3__
// Invalidate selection in a single-selection control for consistency with
// MSW and GTK+ 2 where this happens automatically when deleting the
// selected item or any item before it.
if ( !HasMultipleSelection() )
{
const int sel = GetSelection();
if ( sel != wxNOT_FOUND && static_cast<unsigned>(sel) >= n )
{
// Don't call SetSelection() from here, it's not totally clear if
// it is safe to do, so just do this at GTK+ level.
gtk_tree_selection_unselect_all
(
gtk_tree_view_get_selection(m_treeview)
);
}
}
#endif // __WXGTK3__
}
// ----------------------------------------------------------------------------
// helper functions for working with iterators
// ----------------------------------------------------------------------------
bool wxListBox::GTKGetIteratorFor(unsigned pos, GtkTreeIter *iter) const
{
if ( !gtk_tree_model_iter_nth_child(GTK_TREE_MODEL(m_liststore),
iter, NULL, pos) )
{
wxLogDebug(wxT("gtk_tree_model_iter_nth_child(%u) failed"), pos);
return false;
}
return true;
}
int wxListBox::GTKGetIndexFor(GtkTreeIter& iter) const
{
wxGtkTreePath path(
gtk_tree_model_get_path(GTK_TREE_MODEL(m_liststore), &iter));
gint* pIntPath = gtk_tree_path_get_indices(path);
wxCHECK_MSG( pIntPath, wxNOT_FOUND, wxT("failed to get iterator path") );
return pIntPath[0];
}
// get GtkTreeEntry from position (note: you need to g_unref it if valid)
wxTreeEntry* wxListBox::GTKGetEntry(unsigned n) const
{
GtkTreeIter iter;
if ( !GTKGetIteratorFor(n, &iter) )
return NULL;
return GetEntry(m_liststore, &iter, this);
}
// ----------------------------------------------------------------------------
// client data
// ----------------------------------------------------------------------------
void* wxListBox::DoGetItemClientData(unsigned int n) const
{
wxTreeEntry* entry = GTKGetEntry(n);
wxCHECK_MSG(entry, NULL, wxT("could not get entry"));
return wx_tree_entry_get_userdata(entry);
}
void wxListBox::DoSetItemClientData(unsigned int n, void* clientData)
{
wxTreeEntry* entry = GTKGetEntry(n);
wxCHECK_RET(entry, wxT("could not get entry"));
wx_tree_entry_set_userdata(entry, clientData);
}
// ----------------------------------------------------------------------------
// string list access
// ----------------------------------------------------------------------------
void wxListBox::SetString(unsigned int n, const wxString& label)
{
wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
GtkTreeIter iter;
wxCHECK_RET(GTKGetIteratorFor(n, &iter), "invalid index");
wxTreeEntry* entry = GetEntry(m_liststore, &iter, this);
// update the item itself
wx_tree_entry_set_label(entry, wxGTK_CONV(label));
// signal row changed
GtkTreeModel* tree_model = GTK_TREE_MODEL(m_liststore);
wxGtkTreePath path(gtk_tree_model_get_path(tree_model, &iter));
gtk_tree_model_row_changed(tree_model, path, &iter);
}
wxString wxListBox::GetString(unsigned int n) const
{
wxCHECK_MSG( m_treeview != NULL, wxEmptyString, wxT("invalid listbox") );
wxTreeEntry* entry = GTKGetEntry(n);
wxCHECK_MSG( entry, wxEmptyString, wxT("wrong listbox index") );
return wxGTK_CONV_BACK(wx_tree_entry_get_label(entry));
}
unsigned int wxListBox::GetCount() const
{
wxCHECK_MSG( m_treeview != NULL, 0, wxT("invalid listbox") );
return (unsigned int)gtk_tree_model_iter_n_children(GTK_TREE_MODEL(m_liststore), NULL);
}
int wxListBox::FindString( const wxString &item, bool bCase ) const
{
wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
//Sort of hackish - maybe there is a faster way
unsigned int nCount = wxListBox::GetCount();
for(unsigned int i = 0; i < nCount; ++i)
{
if( item.IsSameAs( wxListBox::GetString(i), bCase ) )
return (int)i;
}
// it's not an error if the string is not found -> no wxCHECK
return wxNOT_FOUND;
}
// ----------------------------------------------------------------------------
// selection
// ----------------------------------------------------------------------------
void wxListBox::GTKOnActivated(int item)
{
SendEvent(wxEVT_LISTBOX_DCLICK, item, IsSelected(item));
}
void wxListBox::GTKOnSelectionChanged()
{
if ( HasFlag(wxLB_MULTIPLE | wxLB_EXTENDED) )
{
CalcAndSendEvent();
}
else // single selection
{
const int item = GetSelection();
if (item >= 0 && DoChangeSingleSelection(item))
SendEvent(wxEVT_LISTBOX, item, true);
}
}
int wxListBox::GetSelection() const
{
wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox"));
wxCHECK_MSG( HasFlag(wxLB_SINGLE), wxNOT_FOUND,
wxT("must be single selection listbox"));
GtkTreeIter iter;
GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
// only works on single-sel
if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
return wxNOT_FOUND;
return GTKGetIndexFor(iter);
}
int wxListBox::GetSelections( wxArrayInt& aSelections ) const
{
wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
aSelections.Empty();
GtkTreeIter iter;
GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(m_liststore), &iter))
{ //gtk_tree_selection_get_selected_rows is GTK 2.2+ so iter instead
int i = 0;
do
{
if (gtk_tree_selection_iter_is_selected(selection, &iter))
aSelections.Add(i);
i++;
} while(gtk_tree_model_iter_next(GTK_TREE_MODEL(m_liststore), &iter));
}
return aSelections.GetCount();
}
bool wxListBox::IsSelected( int n ) const
{
wxCHECK_MSG( m_treeview != NULL, false, wxT("invalid listbox") );
GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
GtkTreeIter iter;
wxCHECK_MSG( GTKGetIteratorFor(n, &iter), false, wxT("Invalid index") );
return gtk_tree_selection_iter_is_selected(selection, &iter) != 0;
}
void wxListBox::DoSetSelection( int n, bool select )
{
wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
wxGtkEventsDisabler<wxListBox> noEvents(this);
GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
// passing -1 to SetSelection() is documented to deselect all items
if ( n == wxNOT_FOUND )
{
gtk_tree_selection_unselect_all(selection);
return;
}
wxCHECK_RET( IsValid(n), wxT("invalid index in wxListBox::SetSelection") );
GtkTreeIter iter;
wxCHECK_RET( GTKGetIteratorFor(n, &iter), wxT("Invalid index") );
if (select)
gtk_tree_selection_select_iter(selection, &iter);
else
gtk_tree_selection_unselect_iter(selection, &iter);
wxGtkTreePath path(
gtk_tree_model_get_path(GTK_TREE_MODEL(m_liststore), &iter));
gtk_tree_view_scroll_to_cell(m_treeview, path, NULL, FALSE, 0.0f, 0.0f);
}
void wxListBox::DoScrollToCell(int n, float alignY, float alignX)
{
wxCHECK_RET( m_treeview, wxT("invalid listbox") );
wxCHECK_RET( IsValid(n), wxT("invalid index"));
//RN: I have no idea why this line is needed...
if (gtk_widget_has_grab(GTK_WIDGET(m_treeview)))
return;
GtkTreeIter iter;
if ( !GTKGetIteratorFor(n, &iter) )
return;
wxGtkTreePath path(
gtk_tree_model_get_path(GTK_TREE_MODEL(m_liststore), &iter));
// Scroll to the desired cell (0.0 == topleft alignment)
gtk_tree_view_scroll_to_cell(m_treeview, path, NULL,
TRUE, alignY, alignX);
}
void wxListBox::DoSetFirstItem(int n)
{
DoScrollToCell(n, 0, 0);
}
void wxListBox::EnsureVisible(int n)
{
DoScrollToCell(n, 0.5, 0);
}
int wxListBox::GetTopItem() const
{
int idx = wxNOT_FOUND;
#if GTK_CHECK_VERSION(2,8,0)
wxGtkTreePath start;
if (
wx_is_at_least_gtk2(8) &&
gtk_tree_view_get_visible_range(m_treeview, start.ByRef(), NULL))
{
gint *ptr = gtk_tree_path_get_indices(start);
if ( ptr )
idx = *ptr;
}
#endif
return idx;
}
int wxListBox::GetCountPerPage() const
{
wxGtkTreePath path;
GtkTreeViewColumn *column;
if ( !gtk_tree_view_get_path_at_pos
(
m_treeview,
0,
0,
path.ByRef(),
&column,
NULL,
NULL
) )
{
return -1;
}
GdkRectangle rect;
gtk_tree_view_get_cell_area(m_treeview, path, column, &rect);
if ( !rect.height )
return -1;
GdkRectangle vis;
gtk_tree_view_get_visible_rect(m_treeview, &vis);
return vis.height / rect.height;
}
// ----------------------------------------------------------------------------
// hittest
// ----------------------------------------------------------------------------
int wxListBox::DoListHitTest(const wxPoint& point) const
{
// gtk_tree_view_get_path_at_pos() also gets items that are not visible and
// we only want visible items we need to check for it manually here
if ( !GetClientRect().Contains(point) )
return wxNOT_FOUND;
// need to translate from master window since it is in client coords
gint binx, biny;
gdk_window_get_geometry(gtk_tree_view_get_bin_window(m_treeview),
&binx, &biny, NULL, NULL);
wxGtkTreePath path;
if ( !gtk_tree_view_get_path_at_pos
(
m_treeview,
point.x - binx,
point.y - biny,
path.ByRef(),
NULL, // [out] column (always 0 here)
NULL, // [out] x-coord relative to the cell (not interested)
NULL // [out] y-coord relative to the cell
) )
{
return wxNOT_FOUND;
}
return gtk_tree_path_get_indices(path)[0];
}
// ----------------------------------------------------------------------------
// helpers
// ----------------------------------------------------------------------------
GtkWidget *wxListBox::GetConnectWidget()
{
// the correct widget for listbox events (such as mouse clicks for example)
// is m_treeview, not the parent scrolled window
return GTK_WIDGET(m_treeview);
}
GdkWindow *wxListBox::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
{
return gtk_tree_view_get_bin_window(m_treeview);
}
void wxListBox::DoApplyWidgetStyle(GtkRcStyle *style)
{
#ifdef __WXGTK3__
// don't know if this is even necessary, or how to do it
#else
if (m_hasBgCol && m_backgroundColour.IsOk())
{
GdkWindow *window = gtk_tree_view_get_bin_window(m_treeview);
if (window)
{
m_backgroundColour.CalcPixel( gdk_drawable_get_colormap( window ) );
gdk_window_set_background( window, m_backgroundColour.GetColor() );
gdk_window_clear( window );
}
}
#endif
GTKApplyStyle(GTK_WIDGET(m_treeview), style);
}
wxSize wxListBox::DoGetBestSize() const
{
wxCHECK_MSG(m_treeview, wxDefaultSize, wxT("invalid tree view"));
// Start with a minimum size that's not too small
int cx, cy;
GetTextExtent( wxT("X"), &cx, &cy);
int lbWidth = 0;
int lbHeight = 10;
// Find the widest string.
const unsigned int count = GetCount();
if ( count )
{
int wLine;
for ( unsigned int i = 0; i < count; i++ )
{
GetTextExtent(GetString(i), &wLine, NULL);
if ( wLine > lbWidth )
lbWidth = wLine;
}
}
lbWidth += 3 * cx;
// And just a bit more for the checkbox if present and then some
// (these are rough guesses)
#if wxUSE_CHECKLISTBOX
if ( m_hasCheckBoxes )
{
lbWidth += 35;
cy = cy > 25 ? cy : 25; // rough height of checkbox
}
#endif
// Add room for the scrollbar
lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
// Don't make the listbox too tall but don't make it too small neither
lbHeight = (cy+4) * wxMin(wxMax(count, 3), 10);
return wxSize(lbWidth, lbHeight);
}
// static
wxVisualAttributes
wxListBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
return GetDefaultAttributesFromGTKWidget(gtk_tree_view_new(), true);
}
#endif // wxUSE_LISTBOX
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