added possibility to throw different objects and crash directly from the main frame...
[wxWidgets.git] / src / msw / ownerdrw.cpp
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1///////////////////////////////////////////////////////////////////////////////
2// Name: msw/ownerdrw.cpp
3// Purpose: implementation of wxOwnerDrawn class
4// Author: Vadim Zeitlin
33ac7e6f 5// Modified by:
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6// Created: 13.11.97
7// RCS-ID: $Id$
8// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
65571936 9// Licence: wxWindows licence
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10///////////////////////////////////////////////////////////////////////////////
11
14f355c2 12#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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13#pragma implementation
14#endif
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15
16// For compilers that support precompilation, includes "wx.h".
17#include "wx/wxprec.h"
ff0ea71c 18#include "wx/msw/private.h"
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19
20#ifdef __BORLANDC__
a3b46648 21#pragma hdrstop
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22#endif
23
24#ifndef WX_PRECOMP
0c589ad0 25 #include "wx/window.h"
136cb3c7 26 #include "wx/msw/private.h"
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27 #include "wx/font.h"
28 #include "wx/bitmap.h"
29 #include "wx/dcmemory.h"
2bda0e17 30 #include "wx/menu.h"
2432b92d 31 #include "wx/utils.h"
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32#endif
33
5100cabf 34#include "wx/settings.h"
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35#include "wx/ownerdrw.h"
36#include "wx/menuitem.h"
d9cf726b 37#include "wx/fontutil.h"
e87fb0ee 38#include "wx/module.h"
2bda0e17 39
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40#if wxUSE_OWNER_DRAWN
41
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42class wxMSWSystemMenuFontModule : public wxModule
43{
44public:
45
46 virtual bool OnInit()
47 {
48 ms_systemMenuFont = new wxFont;
49
50#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
51 NONCLIENTMETRICS nm;
52 nm.cbSize = sizeof(NONCLIENTMETRICS);
10403254 53 SystemParametersInfo(SPI_GETNONCLIENTMETRICS,0,&nm,0);
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54
55 ms_systemMenuButtonWidth = nm.iMenuHeight;
56 ms_systemMenuHeight = nm.iMenuHeight;
57
58 // create menu font
59 wxNativeFontInfo info;
60 memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
61 ms_systemMenuFont->Create(info);
62#endif
63
64 return true;
65 }
66
67 virtual void OnExit()
68 {
69 delete ms_systemMenuFont;
70 ms_systemMenuFont = NULL;
71 }
72
73 static wxFont* ms_systemMenuFont;
74 static int ms_systemMenuButtonWidth; // windows clean install default
75 static int ms_systemMenuHeight; // windows clean install default
76private:
77 DECLARE_DYNAMIC_CLASS(wxMSWSystemMenuFontModule)
78};
79
80// these static variables are by the wxMSWSystemMenuFontModule object
81// and reflect the system settings returned by the Win32 API's
82// SystemParametersInfo() call.
83
84wxFont* wxMSWSystemMenuFontModule::ms_systemMenuFont = NULL;
85int wxMSWSystemMenuFontModule::ms_systemMenuButtonWidth = 18; // windows clean install default
86int wxMSWSystemMenuFontModule::ms_systemMenuHeight = 18; // windows clean install default
87
88IMPLEMENT_DYNAMIC_CLASS(wxMSWSystemMenuFontModule, wxModule)
2432b92d 89
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90// ============================================================================
91// implementation of wxOwnerDrawn class
92// ============================================================================
93
94// ctor
95// ----
33ac7e6f 96wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
19b42379 97 bool bCheckable, bool bMenuItem)
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98 : m_strName(str)
99{
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100 // get the default menu height and font from the system
101 NONCLIENTMETRICS nm;
102 nm.cbSize = sizeof (NONCLIENTMETRICS);
10403254 103 SystemParametersInfo (SPI_GETNONCLIENTMETRICS,0,&nm,0);
d9cf726b 104 m_nMinHeight = nm.iMenuHeight;
10403254 105
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106 // nm.iMenuWidth is the system default for the width of
107 // menu icons and checkmarks
108 if (ms_nDefaultMarginWidth == 0)
109 {
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110 ms_nDefaultMarginWidth = wxMSWSystemMenuFontModule::ms_systemMenuButtonWidth;
111 ms_nLastMarginWidth = wxMSWSystemMenuFontModule::ms_systemMenuButtonWidth;
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112 }
113
cfbf444a 114 if (wxMSWSystemMenuFontModule::ms_systemMenuFont->Ok() && bMenuItem)
19b42379 115 {
cfbf444a 116 m_font = *wxMSWSystemMenuFontModule::ms_systemMenuFont;
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117 }
118 else
119 {
120 m_font = *wxNORMAL_FONT;
121 }
2bda0e17 122
d9cf726b 123 m_bCheckable = bCheckable;
078cf5cb 124 m_bOwnerDrawn = false;
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125 m_nHeight = 0;
126 m_nMarginWidth = ms_nLastMarginWidth;
cfbf444a 127 m_nMinHeight = wxMSWSystemMenuFontModule::ms_systemMenuHeight;
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128
129 m_bmpDisabled = wxNullBitmap;
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130}
131
132
133// these items will be set during the first invocation of the c'tor,
134// because the values will be determined by checking the system settings,
10403254 135// which is a chunk of code
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136size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
137size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;
138
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139
140// drawing
141// -------
142
143// get size of the item
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144// The item size includes the menu string, the accel string,
145// the bitmap and size for a submenu expansion arrow...
c86f1403 146bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight)
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147{
148 wxMemoryDC dc;
2bda0e17 149
f2ab8671 150 wxString str = wxStripMenuCodes(m_strName);
2bda0e17 151
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152 // if we have a valid accel string, then pad out
153 // the menu string so the menu and accel string are not
154 // placed ontop of eachother.
155 if ( !m_strAccel.empty() )
156 {
157 str.Pad(str.Length()%8);
158 str += m_strAccel;
159 }
2bda0e17 160
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161 if (m_font.Ok())
162 dc.SetFont(GetFont());
163
2bda0e17 164 dc.GetTextExtent(str, (long *)pwidth, (long *)pheight);
c7527e3f 165
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166 // add space at the end of the menu for the submenu expansion arrow
167 // this will also allow offsetting the accel string from the right edge
7230716d 168 *pwidth += GetDefaultMarginWidth() + 16;
2a2a71e3 169
34621cc5 170 // increase size to accommodate bigger bitmaps if necessary
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171 if (m_bmpChecked.Ok())
172 {
173 // Is BMP height larger then text height?
174 size_t adjustedHeight = m_bmpChecked.GetHeight() +
7230716d 175 2*wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
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176 if (*pheight < adjustedHeight)
177 *pheight = adjustedHeight;
33ac7e6f 178
e7dd6ecd 179 // Does BMP encroach on default check menu position?
7230716d 180 size_t adjustedWidth = m_bmpChecked.GetWidth();
33ac7e6f 181
e7dd6ecd 182 // Do we need to widen margin to fit BMP?
7230716d 183 if ((size_t)GetMarginWidth() < adjustedWidth)
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184 SetMarginWidth(adjustedWidth);
185 }
33ac7e6f 186
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187 // make sure that this item is at least as
188 // tall as the user's system settings specify
189 if (*pheight < m_nMinHeight)
190 *pheight = m_nMinHeight;
191
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192 // remember height for use in OnDrawItem
193 m_nHeight = *pheight;
2bda0e17 194
078cf5cb 195 return true;
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196}
197
2bda0e17 198// draw the item
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199bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
200 const wxRect& rc,
201 wxODAction act,
202 wxODStatus st)
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203{
204 // we do nothing on focus change
205 if ( act == wxODFocusChanged )
078cf5cb 206 return true;
2bda0e17 207
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208
209 // this flag determines whether or not an edge will
210 // be drawn around the bitmap. In most "windows classic"
211 // applications, a 1-pixel highlight edge is drawn around
212 // the bitmap of an item when it is selected. However,
213 // with the new "luna" theme, no edge is drawn around
214 // the bitmap because the background is white (this applies
215 // only to "non-XP style" menus w/ bitmaps --
216 // see IE 6 menus for an example)
217
218 bool draw_bitmap_edge = true;
219
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220 // set the colors
221 // --------------
222 DWORD colBack, colText;
223 if ( st & wxODSelected ) {
224 colBack = GetSysColor(COLOR_HIGHLIGHT);
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225 if (!(st & wxODDisabled))
226 {
227 colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
228 }
229 else
230 {
231 colText = GetSysColor(COLOR_GRAYTEXT);
232 }
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233 }
234 else {
235 // fall back to default colors if none explicitly specified
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236 colBack = m_colBack.Ok() ? wxColourToPalRGB(m_colBack)
237 : GetSysColor(COLOR_WINDOW);
238 colText = m_colText.Ok() ? wxColourToPalRGB(m_colText)
239 : GetSysColor(COLOR_WINDOWTEXT);
2bda0e17 240 }
33ac7e6f 241
c0cb30dc 242
cb0bcdd6 243 // don't draw an edge around the bitmap, if background is white ...
c0cb30dc 244 DWORD menu_bg_color = GetSysColor(COLOR_MENU);
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245 if ( ( GetRValue( menu_bg_color ) >= 0xf0 &&
246 GetGValue( menu_bg_color ) >= 0xf0 &&
247 GetBValue( menu_bg_color ) >= 0xf0 )
248 // ... or if the menu item is disabled
249 || ( st & wxODDisabled )
250 )
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251 {
252 draw_bitmap_edge = false;
253 }
254
255
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256 HDC hdc = GetHdcOf(dc);
257 COLORREF colOldText = ::SetTextColor(hdc, colText),
258 colOldBack = ::SetBkColor(hdc, colBack);
259
260 int margin = GetMarginWidth() + wxSystemSettings::GetMetric(wxSYS_EDGE_X);
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261
262 // select the font and draw the text
263 // ---------------------------------
264
d9cf726b 265
33ac7e6f 266 // determine where to draw and leave space for a check-mark.
7230716d 267 int xText = rc.x + margin;
d9cf726b 268
2bda0e17 269
33ac7e6f 270 // using native API because it reckognizes '&'
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271 int nPrevMode = SetBkMode(hdc, TRANSPARENT);
272 HBRUSH hbr = CreateSolidBrush(colBack),
273 hPrevBrush = (HBRUSH)SelectObject(hdc, hbr);
d9cf726b 274
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275 RECT rectFill = { rc.GetLeft(), rc.GetTop(),
276 rc.GetRight() + 1, rc.GetBottom() + 1 };
d9cf726b 277
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278 if ( (st & wxODSelected) && m_bmpChecked.Ok() ) {
279 // only draw the highlight under the text, not under
280 // the bitmap or checkmark
281 rectFill.left = xText;
282 }
2bda0e17 283
7230716d 284 FillRect(hdc, &rectFill, hbr);
2bda0e17 285
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286 // use default font if no font set
287 HFONT hfont;
288 if ( m_font.Ok() ) {
289 m_font.RealizeResource();
290 hfont = (HFONT)m_font.GetResourceHandle();
291 }
292 else {
293 hfont = (HFONT)::GetStockObject(SYSTEM_FONT);
294 }
f44b4495 295
7230716d 296 HFONT hPrevFont = (HFONT) ::SelectObject(hdc, hfont);
d9cf726b 297
7230716d 298 wxString strMenuText = m_strName.BeforeFirst('\t');
6d5b2a57 299
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300 SIZE sizeRect;
301 GetTextExtentPoint32(hdc,strMenuText.c_str(), strMenuText.Length(),&sizeRect);
302 ::DrawState(hdc, NULL, NULL,
303 (LPARAM)strMenuText.c_str(), strMenuText.length(),
304 xText, rc.y+( (int) ((rc.GetHeight()-sizeRect.cy)/2.0) )-1, // centre text vertically
305 rc.GetWidth()-margin, sizeRect.cy,
306 DST_PREFIXTEXT |
307 (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
10403254 308
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309 // ::SetTextAlign(hdc, TA_RIGHT) doesn't work with DSS_DISABLED or DSS_MONO
310 // as last parameter in DrawState() (at least with Windows98). So we have
311 // to take care of right alignment ourselves.
312 if ( !m_strAccel.empty() )
313 {
314 int accel_width, accel_height;
315 dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
316 // right align accel string with right edge of menu ( offset by the
317 // margin width )
318 ::DrawState(hdc, NULL, NULL,
319 (LPARAM)m_strAccel.c_str(), m_strAccel.length(),
320 rc.GetWidth()-margin-accel_width, rc.y+(int) ((rc.GetHeight()-sizeRect.cy)/2.0),
321 rc.GetWidth()-margin-accel_width, sizeRect.cy,
322 DST_TEXT |
323 (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
324 }
2bda0e17 325
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326 (void)SelectObject(hdc, hPrevBrush);
327 (void)SelectObject(hdc, hPrevFont);
328 (void)SetBkMode(hdc, nPrevMode);
2b5f62a0 329
7230716d 330 DeleteObject(hbr);
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331
332 // draw the bitmap
333 // ---------------
334 if ( IsCheckable() && !m_bmpChecked.Ok() ) {
335 if ( st & wxODChecked ) {
33ac7e6f 336 // what goes on: DrawFrameControl creates a b/w mask,
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337 // then we copy it to screen to have right colors
338
339 // first create a monochrome bitmap in a memory DC
340 HDC hdcMem = CreateCompatibleDC(hdc);
7230716d 341 HBITMAP hbmpCheck = CreateBitmap(margin, m_nHeight, 1, 1, 0);
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342 SelectObject(hdcMem, hbmpCheck);
343
344 // then draw a check mark into it
7230716d 345 RECT rect = { 0, 0, margin, m_nHeight };
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346 if ( m_nHeight > 0 )
347 {
f44b4495 348 ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
07cf98cb 349 }
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350
351 // finally copy it to screen DC and clean up
7230716d 352 BitBlt(hdc, rc.x, rc.y, margin, m_nHeight,
2bda0e17 353 hdcMem, 0, 0, SRCCOPY);
07cf98cb 354
2bda0e17 355 DeleteDC(hdcMem);
07cf98cb 356 DeleteObject(hbmpCheck);
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357 }
358 }
359 else {
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360 wxBitmap bmp;
361
362 if ( st & wxODDisabled )
363 {
364 bmp = GetDisabledBitmap();
365 }
366
367 if ( !bmp.Ok() )
368 {
369 // for not checkable bitmaps we should always use unchecked one because
370 // their checked bitmap is not set
371 bmp = GetBitmap(!IsCheckable() || (st & wxODChecked));
372 }
373
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374 if ( bmp.Ok() ) {
375 wxMemoryDC dcMem(&dc);
376 dcMem.SelectObject(bmp);
377
378 // center bitmap
379 int nBmpWidth = bmp.GetWidth(),
380 nBmpHeight = bmp.GetHeight();
381
382 // there should be enough place!
383 wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
384
f44b4495 385 int heightDiff = m_nHeight - nBmpHeight;
7230716d 386 dc.Blit(rc.x + (margin - nBmpWidth) / 2,
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387 rc.y + heightDiff / 2,
388 nBmpWidth, nBmpHeight,
078cf5cb 389 &dcMem, 0, 0, wxCOPY, true /* use mask */);
2bda0e17 390
c0cb30dc 391 if ( st & wxODSelected && draw_bitmap_edge ) {
2a2a71e3 392 RECT rectBmp = { rc.GetLeft(), rc.GetTop(),
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393 rc.GetLeft() + margin,
394 rc.GetTop() + m_nHeight };
2a2a71e3 395 SetBkColor(hdc, colBack);
7230716d 396
c0cb30dc 397 DrawEdge(hdc, &rectBmp, BDR_RAISEDOUTER, BF_SOFT | BF_RECT);
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398 }
399 }
400 }
401
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402 ::SetTextColor(hdc, colOldText);
403 ::SetBkColor(hdc, colOldBack);
2bda0e17 404
078cf5cb 405 return true;
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406}
407
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408
409#endif // wxUSE_OWNER_DRAWN
410