2bda0e1738
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
307 lines
9.0 KiB
C++
307 lines
9.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: msw/checklst.cpp
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// Purpose: implementation of wxCheckListBox class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 16.11.97
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// headers & declarations
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// ============================================================================
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#ifdef __GNUG__
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#pragma implementation "checklst.h"
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#endif
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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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#include <windows.h>
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#include "wx/ownerdrw.h"
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#include "wx/msw/checklst.h"
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// ============================================================================
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// implementation
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// ============================================================================
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#if !USE_SHARED_LIBRARY
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IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
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#endif
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// ----------------------------------------------------------------------------
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// declaration and implementation of wxCheckListBoxItem class
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// ----------------------------------------------------------------------------
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class wxCheckListBoxItem : public wxOwnerDrawn
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{
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public:
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// ctor
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wxCheckListBoxItem(wxCheckListBox *pParent, uint nIndex);
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// drawing functions
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virtual bool OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus stat);
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// simple accessors
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bool IsChecked() const { return m_bChecked; }
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void Check(bool bCheck) { m_bChecked = bCheck; }
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void Toggle();
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private:
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bool m_bChecked;
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wxCheckListBox *m_pParent;
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uint m_nIndex;
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};
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wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox *pParent, uint nIndex)
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: wxOwnerDrawn("", TRUE) // checkable
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{
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m_bChecked = FALSE;
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m_pParent = pParent;
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m_nIndex = nIndex;
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// we don't initialize m_nCheckHeight/Width vars because it's
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// done in OnMeasure while they are used only in OnDraw and we
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// know that there will always be OnMeasure before OnDraw
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// fix appearance
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SetFont(wxSystemSettings::GetSystemFont(wxSYS_ANSI_VAR_FONT));
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SetMarginWidth(GetDefaultMarginWidth());
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}
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/*
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* JACS - I've got the owner-draw stuff partially working with WIN16,
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* with a really horrible-looking cross for wxCheckListBox instead of a
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* check - could use a bitmap check-mark instead, defined in wx.rc.
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* Also there's a refresh problem whereby it doesn't always draw the
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* check until you click to the right of it, which is OK for WIN32.
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*/
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bool wxCheckListBoxItem::OnDrawItem(wxDC& dc, const wxRect& rc,
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wxODAction act, wxODStatus stat)
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{
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if ( IsChecked() )
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stat = (wxOwnerDrawn::wxODStatus)(stat | wxOwnerDrawn::wxODChecked);
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if ( wxOwnerDrawn::OnDrawItem(dc, rc, act, stat) ) {
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// ## using native API for performance and precision
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uint nCheckWidth = GetDefaultMarginWidth(),
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nCheckHeight = m_pParent->GetItemHeight();
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int x = rc.GetX(),
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y = rc.GetY();
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HDC hdc = (HDC)dc.GetHDC();
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// create pens
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HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)),
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hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)),
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hpenPrev = SelectObject(hdc, hpenBack);
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// we erase the 1-pixel border
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Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
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// shift check mark 1 pixel to the right (it looks better like this)
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x++;
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if ( IsChecked() ) {
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// first create a monochrome bitmap in a memory DC
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HDC hdcMem = CreateCompatibleDC(hdc);
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HBITMAP hbmpCheck = CreateBitmap(nCheckWidth, nCheckHeight, 1, 1, 0);
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HBITMAP hbmpOld = SelectObject(hdcMem, hbmpCheck);
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// then draw a check mark into it
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RECT rect = { 0, 0, nCheckWidth, nCheckHeight };
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#ifdef __WIN32__
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DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
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#else
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// In WIN16, draw a cross
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HPEN blackPen = CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
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HPEN whiteBrush = GetStockObject(WHITE_BRUSH);
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HPEN hPenOld = ::SelectObject(hdcMem, blackPen);
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HPEN hBrushOld = ::SelectObject(hdcMem, whiteBrush);
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::SetROP2(hdcMem, R2_COPYPEN);
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Rectangle(hdcMem, 0, 0, nCheckWidth, nCheckHeight);
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MoveTo(hdcMem, 0, 0);
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LineTo(hdcMem, nCheckWidth, nCheckHeight);
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MoveTo(hdcMem, nCheckWidth, 0);
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LineTo(hdcMem, 0, nCheckHeight);
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::SelectObject(hdcMem, hPenOld);
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::SelectObject(hdcMem, hBrushOld);
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::DeleteObject(blackPen);
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#endif
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// finally copy it to screen DC and clean up
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BitBlt(hdc, x, y, nCheckWidth - 1, nCheckHeight,
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hdcMem, 0, 0, SRCCOPY);
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SelectObject(hdcMem, hbmpOld);
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DeleteObject(hbmpCheck);
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DeleteDC(hdcMem);
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}
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// now we draw the smaller rectangle
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y++;
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nCheckWidth -= 2;
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nCheckHeight -= 2;
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// draw hollow gray rectangle
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(void)SelectObject(hdc, hpenGray);
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HBRUSH hbrPrev = SelectObject(hdc, GetStockObject(NULL_BRUSH));
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Rectangle(hdc, x, y, x + nCheckWidth, y + nCheckHeight);
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// clean up
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(void)SelectObject(hdc, hpenPrev);
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(void)SelectObject(hdc, hbrPrev);
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DeleteObject(hpenBack);
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DeleteObject(hpenGray);
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/*
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dc.DrawRectangle(x, y, nCheckWidth, nCheckHeight);
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if ( IsChecked() ) {
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dc.DrawLine(x, y, x + nCheckWidth, y + nCheckHeight);
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dc.DrawLine(x, y + nCheckHeight, x + nCheckWidth, y);
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}
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*/
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return TRUE;
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}
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return FALSE;
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}
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// change the state of the item and redraw it
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void wxCheckListBoxItem::Toggle()
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{
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m_bChecked = !m_bChecked;
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uint nHeight = m_pParent->GetItemHeight();
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uint y = m_nIndex * nHeight;
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RECT rcUpdate = { 0, y, GetDefaultMarginWidth(), y + nHeight};
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InvalidateRect((HWND)m_pParent->GetHWND(), &rcUpdate, FALSE);
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wxCommandEvent event(wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, m_pParent->GetId());
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event.SetInt(m_nIndex);
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event.SetEventObject(m_pParent);
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m_pParent->ProcessCommand(event);
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}
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// ----------------------------------------------------------------------------
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// implementation of wxCheckListBox class
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// ----------------------------------------------------------------------------
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// define event table
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// ------------------
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BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
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EVT_CHAR(wxCheckListBox::OnChar)
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EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
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END_EVENT_TABLE()
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// control creation
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// ----------------
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// def ctor: use Create() to really create the control
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wxCheckListBox::wxCheckListBox() : wxListBox()
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{
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}
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// ctor which creates the associated control
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wxCheckListBox::wxCheckListBox(wxWindow *parent, const wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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const int nStrings, const wxString choices[],
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const long style, const wxValidator& val,
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const wxString& name) // , const wxFont& font)
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// don't use ctor with arguments! we must call Create()
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// ourselves from here.
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: wxListBox()
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// , m_font(font)
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{
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Create(parent, id, pos, size, nStrings, choices, style|wxLB_OWNERDRAW, val, name);
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}
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// create/retrieve item
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// --------------------
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// create a check list box item
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wxOwnerDrawn *wxCheckListBox::CreateItem(uint nIndex)
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{
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wxCheckListBoxItem *pItem = new wxCheckListBoxItem(this, nIndex);
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if ( m_windowFont.Ok() )
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pItem->SetFont(m_windowFont);
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return pItem;
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}
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// get item (converted to right type)
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#define GetItem(n) ((wxCheckListBoxItem *)(GetItem(n)))
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// return item size
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// ----------------
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bool wxCheckListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
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{
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if ( wxListBox::MSWOnMeasure(item) ) {
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MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
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// save item height
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m_nItemHeight = pStruct->itemHeight;
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// add place for the check mark
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pStruct->itemWidth += wxOwnerDrawn::GetDefaultMarginWidth();
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return TRUE;
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}
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return FALSE;
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}
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// check items
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// -----------
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bool wxCheckListBox::IsChecked(uint uiIndex) const
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{
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return GetItem(uiIndex)->IsChecked();
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}
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void wxCheckListBox::Check(uint uiIndex, bool bCheck)
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{
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GetItem(uiIndex)->Check(bCheck);
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}
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// process events
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// --------------
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void wxCheckListBox::OnChar(wxKeyEvent& event)
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{
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if ( event.KeyCode() == WXK_SPACE )
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GetItem(GetSelection())->Toggle();
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else
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wxListBox::OnChar(event);
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}
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void wxCheckListBox::OnLeftClick(wxMouseEvent& event)
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{
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// clicking on the item selects it, clicking on the checkmark toggles
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if ( (uint)event.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth() ) {
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// # better use LB_ITEMFROMPOINT perhaps?
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uint nItem = ((uint)event.GetY()) / m_nItemHeight;
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if ( nItem < (uint)m_noItems )
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GetItem(nItem)->Toggle();
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//else: it's not an error, just click outside of client zone
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}
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else {
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// implement default behaviour: clicking on the item selects it
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event.Skip();
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}
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}
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