added wxVListBox using wxVScrolledWindow and wxHtmlListBox using it
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20808 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
288
src/generic/vlbox.cpp
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288
src/generic/vlbox.cpp
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///////////////////////////////////////////////////////////////////////////////
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// Name: generic/vlbox.cpp
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// Purpose: implementation of wxVListBox
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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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// RCS-ID: $Id$
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
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// License: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/settings.h"
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#endif //WX_PRECOMP
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#include "wx/vlbox.h"
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// ----------------------------------------------------------------------------
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// event tables
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// ----------------------------------------------------------------------------
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BEGIN_EVENT_TABLE(wxVListBox, wxVScrolledWindow)
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EVT_PAINT(wxVListBox::OnPaint)
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EVT_KEY_DOWN(wxVListBox::OnKeyDown)
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EVT_LEFT_DOWN(wxVListBox::OnLeftDown)
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EVT_LEFT_DCLICK(wxVListBox::OnLeftDClick)
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END_EVENT_TABLE()
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxVListBox creation
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// ----------------------------------------------------------------------------
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void wxVListBox::Init()
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{
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m_selection = -1;
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}
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bool wxVListBox::Create(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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size_t countItems,
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long style,
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const wxString& name)
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{
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if ( !wxVScrolledWindow::Create(parent, id, pos, size, style, name) )
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return false;
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SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX));
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SetItemCount(countItems);
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return true;
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}
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// ----------------------------------------------------------------------------
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// selection handling
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// ----------------------------------------------------------------------------
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void wxVListBox::DoSetSelection(int selection, bool sendEvent)
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{
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if ( selection == m_selection )
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{
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// nothing to do
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return;
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}
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if ( m_selection != -1 )
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RefreshLine(m_selection);
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m_selection = selection;
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if ( m_selection != -1 )
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{
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// if the line is not visible at all, we scroll it into view but we
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// don't need to refresh it -- it will be redrawn anyhow
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if ( !IsVisible(m_selection) )
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{
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ScrollToLine(m_selection);
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}
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else // line is at least partly visible
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{
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// it is, indeed, only partly visible, so scroll it into view to
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// make it entirely visible
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if ( (size_t)m_selection == GetLastVisibleLine() )
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{
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ScrollToLine(m_selection);
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}
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// but in any case refresh it as even if it was only partly visible
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// before we need to redraw it entirely as its background changed
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RefreshLine(m_selection);
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}
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// send a notification event if we were not called directly by user
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if ( sendEvent )
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{
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wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, GetId());
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event.SetEventObject(this);
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event.m_commandInt = selection;
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(void)GetEventHandler()->ProcessEvent(event);
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}
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}
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}
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// ----------------------------------------------------------------------------
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// wxVListBox painting
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// ----------------------------------------------------------------------------
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void wxVListBox::SetMargins(const wxPoint& pt)
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{
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if ( pt != m_ptMargins )
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{
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m_ptMargins = pt;
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Refresh();
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}
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}
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wxCoord wxVListBox::OnGetLineHeight(size_t line) const
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{
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return OnMeasureItem(line) + 2*m_ptMargins.y;
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}
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void wxVListBox::OnDrawSeparator(wxDC& WXUNUSED(dc),
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wxRect& WXUNUSED(rect),
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size_t WXUNUSED(n)) const
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{
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}
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void wxVListBox::OnPaint(wxPaintEvent& event)
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{
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wxPaintDC dc(this);
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// the update rectangle
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wxRect rectUpdate = GetUpdateClientRect();
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// the bounding rectangle of the current line
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wxRect rectLine;
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rectLine.width = GetClientSize().x;
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// iterate over all visible lines
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const size_t lineMax = GetLastVisibleLine();
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for ( size_t line = GetFirstVisibleLine(); line <= lineMax; line++ )
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{
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const wxCoord hLine = OnGetLineHeight(line);
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rectLine.height = hLine;
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// and draw the ones which intersect the update rect
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if ( rectLine.Intersects(rectUpdate) )
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{
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// don't allow drawing outside of the lines rectangle
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wxDCClipper clip(dc, rectLine);
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if ( IsSelected(line) )
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{
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wxBrush brush(wxSystemSettings::
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GetColour(wxSYS_COLOUR_HIGHLIGHT),
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wxSOLID);
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dc.SetBrush(brush);
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dc.SetPen(*wxTRANSPARENT_PEN);
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dc.DrawRectangle(rectLine);
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}
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wxRect rect = rectLine;
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OnDrawSeparator(dc, rect, line);
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rect.Deflate(m_ptMargins.x, m_ptMargins.y);
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OnDrawItem(dc, rect, line);
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}
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else // no intersection
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{
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if ( rectLine.GetTop() > rectUpdate.GetBottom() )
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{
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// we are already below the update rect, no need to continue
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// further
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break;
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}
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//else: the next line may intersect the update rect
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}
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rectLine.y += hLine;
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}
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}
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// ----------------------------------------------------------------------------
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// wxVListBox keyboard handling
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// ----------------------------------------------------------------------------
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void wxVListBox::OnKeyDown(wxKeyEvent& event)
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{
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int selection = 0; // just to silent the stupid compiler warnings
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switch ( event.GetKeyCode() )
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{
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case WXK_HOME:
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selection = 0;
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break;
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case WXK_END:
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selection = GetLineCount() - 1;
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break;
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case WXK_DOWN:
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if ( m_selection == (int)GetLineCount() - 1 )
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return;
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selection = m_selection + 1;
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break;
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case WXK_UP:
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if ( m_selection == -1 )
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selection = GetLineCount() - 1;
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else if ( m_selection != 0 )
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selection = m_selection - 1;
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else // m_selection == 0
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return;
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break;
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case WXK_PAGEDOWN:
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case WXK_NEXT:
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PageDown();
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selection = GetFirstVisibleLine();
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break;
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case WXK_PAGEUP:
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case WXK_PRIOR:
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if ( m_selection == (int)GetFirstVisibleLine() )
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{
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PageUp();
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}
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selection = GetFirstVisibleLine();
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break;
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default:
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event.Skip();
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return;
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}
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DoSetSelection(selection);
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}
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// ----------------------------------------------------------------------------
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// wxVListBox mouse handling
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// ----------------------------------------------------------------------------
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void wxVListBox::OnLeftDown(wxMouseEvent& event)
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{
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int item = HitTest(event.GetPosition());
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DoSetSelection(item);
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}
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void wxVListBox::OnLeftDClick(wxMouseEvent& event)
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{
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int item = HitTest(event.GetPosition());
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if ( item != -1 )
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{
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wxCommandEvent event(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, GetId());
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event.SetEventObject(this);
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event.m_commandInt = item;
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(void)GetEventHandler()->ProcessEvent(event);
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}
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}
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