added some wxMSW stuff
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Karsten Ballüder
230
src/msw/ownerdrw.cpp
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230
src/msw/ownerdrw.cpp
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///////////////////////////////////////////////////////////////////////////////
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// Name: msw/ownerdrw.cpp
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// Purpose: implementation of wxOwnerDrawn class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 13.11.97
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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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// 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/menu.h"
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#endif
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#include "wx/ownerdrw.h"
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#include "wx/menuitem.h"
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#include <windows.h>
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// ============================================================================
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// implementation of wxOwnerDrawn class
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// ============================================================================
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// ctor
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// ----
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wxOwnerDrawn::wxOwnerDrawn(const wxTString& str,
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bool bCheckable, bool bMenuItem)
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: m_strName(str)
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{
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m_bCheckable = bCheckable;
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m_bOwnerDrawn = FALSE;
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m_nHeight = 0;
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m_nMarginWidth = ms_nLastMarginWidth;
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}
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#if defined(__WINDOWS__) && defined(__WIN32__)
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uint wxOwnerDrawn::ms_nDefaultMarginWidth = GetSystemMetrics(SM_CXMENUCHECK);
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#else // # what is the reasonable default?
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uint wxOwnerDrawn::ms_nDefaultMarginWidth = 15;
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#endif
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uint wxOwnerDrawn::ms_nLastMarginWidth = ms_nDefaultMarginWidth;
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// drawing
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// -------
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// get size of the item
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bool wxOwnerDrawn::OnMeasureItem(uint *pwidth, uint *pheight)
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{
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wxMemoryDC dc;
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dc.SetFont(GetFont());
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// ## ugly...
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char *szStripped = new char[m_strName.Len()];
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wxStripMenuCodes((char *)m_strName.c_str(), szStripped);
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wxString str = szStripped;
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delete [] szStripped;
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// # without this menu items look too tightly packed (at least under Windows)
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str += 'W'; // 'W' is typically the widest letter
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dc.GetTextExtent(str, (long *)pwidth, (long *)pheight);
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m_nHeight = *pheight; // remember height for use in OnDrawItem
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return TRUE;
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}
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// searching for this macro you'll find all the code where I'm using the native
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// Win32 GDI functions and not wxWindows ones. Might help to whoever decides to
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// port this code to X. (VZ)
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#ifdef __WIN32__
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#define O_DRAW_NATIVE_API // comments below explain why I use it
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#endif
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// draw the item
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bool wxOwnerDrawn::OnDrawItem(wxDC& dc, const wxRect& rc, wxODAction act, wxODStatus st)
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{
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// we do nothing on focus change
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if ( act == wxODFocusChanged )
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return TRUE;
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// wxColor <-> RGB
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#define ToRGB(col) RGB(col.Red(), col.Green(), col.Blue())
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#define UnRGB(col) GetRValue(col), GetGValue(col), GetBValue(col)
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// set the colors
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// --------------
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DWORD colBack, colText;
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if ( st & wxODSelected ) {
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colBack = GetSysColor(COLOR_HIGHLIGHT);
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colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
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}
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else {
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// fall back to default colors if none explicitly specified
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colBack = m_colBack.Ok() ? ToRGB(m_colBack) : GetSysColor(COLOR_WINDOW);
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colText = m_colText.Ok() ? ToRGB(m_colText) : GetSysColor(COLOR_WINDOWTEXT);
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}
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#ifdef O_DRAW_NATIVE_API
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#define hdc (HDC)dc.GetHDC()
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COLORREF colOldText = ::SetTextColor(hdc, colText),
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colOldBack = ::SetBkColor(hdc, colBack);
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#else
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dc.SetTextForeground(wxColor(UnRGB(colText)));
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dc.SetTextBackground(wxColor(UnRGB(colBack)));
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#endif
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// select the font and draw the text
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// ---------------------------------
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// determine where to draw and leave space for a check-mark.
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int x = rc.x + GetMarginWidth();
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// using native API because it reckognizes '&'
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#ifdef O_DRAW_NATIVE_API
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int nPrevMode = SetBkMode(hdc, TRANSPARENT);
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HBRUSH hbr = CreateSolidBrush(colBack),
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hPrevBrush = SelectObject(hdc, hbr);
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RECT rectAll = { rc.GetLeft(), rc.GetTop(), rc.GetRight(), rc.GetBottom() };
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FillRect(hdc, &rectAll, hbr);
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// use default font if no font set
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HFONT hfont;
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if ( m_font.Ok() ) {
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m_font.RealizeResource();
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hfont = (HFONT)m_font.GetResourceHandle();
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}
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else {
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hfont = (HFONT)::GetStockObject(SYSTEM_FONT);
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}
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HFONT hPrevFont = ::SelectObject(hdc, hfont);
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DrawState(hdc, NULL, NULL,
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(LPARAM)(const char *)m_strName, m_strName.Length(),
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x, rc.y, rc.GetWidth(), rc.GetHeight(),
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DST_PREFIXTEXT | ( st & wxODDisabled ? DSS_DISABLED : 0) );
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(void)SelectObject(hdc, hPrevBrush);
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(void)SelectObject(hdc, hPrevFont);
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(void)SetBkMode(hdc, nPrevMode);
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#else
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dc.SetFont(GetFont());
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dc.DrawText(m_strName, x, rc.y);
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#endif //O_DRAW_NATIVE_API
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// draw the bitmap
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// ---------------
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if ( IsCheckable() && !m_bmpChecked.Ok() ) {
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if ( st & wxODChecked ) {
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// using native APIs for performance and simplicity
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#ifdef O_DRAW_NATIVE_API
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// what goes on: DrawFrameControl creates a b/w mask,
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// then we copy it to screen to have right colors
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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(GetMarginWidth(), m_nHeight, 1, 1, 0);
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SelectObject(hdcMem, hbmpCheck);
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// then draw a check mark into it
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RECT rect = { 0, 0, GetMarginWidth(), m_nHeight };
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DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
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// finally copy it to screen DC and clean up
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BitBlt(hdc, rc.x, rc.y, GetMarginWidth(), m_nHeight,
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hdcMem, 0, 0, SRCCOPY);
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DeleteDC(hdcMem);
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#else
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// #### to do: perhaps using Marlett font (create equiv. font under X)
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wxFAIL("not implemented");
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#endif //O_DRAW_NATIVE_API
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}
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}
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else {
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// for uncheckable item we use only the 'checked' bitmap
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wxBitmap bmp(GetBitmap(IsCheckable() ? ((st & wxODChecked) != 0) : TRUE));
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if ( bmp.Ok() ) {
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wxMemoryDC dcMem(&dc);
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dcMem.SelectObject(bmp);
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// center bitmap
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int nBmpWidth = bmp.GetWidth(),
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nBmpHeight = bmp.GetHeight();
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// there should be enough place!
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wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
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dc.Blit(rc.x + (GetMarginWidth() - nBmpWidth) / 2,
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rc.y + (m_nHeight - nBmpHeight) /2,
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nBmpWidth, nBmpHeight,
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&dcMem, 0, 0, wxCOPY);
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if ( st & wxODSelected ) {
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#ifdef O_DRAW_NATIVE_API
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RECT rectBmp = { rc.GetLeft(), rc.GetTop(),
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rc.GetLeft() + GetMarginWidth(),
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rc.GetTop() + m_nHeight };
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SetBkColor(hdc, colBack);
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DrawEdge(hdc, &rectBmp, EDGE_RAISED, BF_SOFT | BF_RECT);
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#else
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// ## to write portable DrawEdge
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#endif //O_DRAW_NATIVE_API
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}
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}
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}
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#ifdef O_DRAW_NATIVE_API
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::SetTextColor(hdc, colOldText);
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::SetBkColor(hdc, colOldBack);
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#undef hdc
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#endif //O_DRAW_NATIVE_API
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return TRUE;
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}
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