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Applied patch [ 597700 ] Fix proposal for wxJoystick under MSW
[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>
9// Licence: wxWindows license
10///////////////////////////////////////////////////////////////////////////////
11
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12#ifdef __GNUG__
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"
2bda0e17 38
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39#if wxUSE_OWNER_DRAWN
40
2432b92d 41
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42// ============================================================================
43// implementation of wxOwnerDrawn class
44// ============================================================================
45
46// ctor
47// ----
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48wxOwnerDrawn::wxOwnerDrawn(const wxString& str,
49 bool bCheckable, bool WXUNUSED(bMenuItem))
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50 : m_strName(str)
51{
2432b92d 52#if defined(__WXMSW__) && defined(__WIN32__) && defined(SM_CXMENUCHECK)
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53 // get the default menu height and font from the system
54 NONCLIENTMETRICS nm;
55 nm.cbSize = sizeof (NONCLIENTMETRICS);
56 SystemParametersInfo (SPI_GETNONCLIENTMETRICS,0,&nm,0);
57 m_nMinHeight = nm.iMenuHeight;
58
59 // nm.iMenuWidth is the system default for the width of
60 // menu icons and checkmarks
61 if (ms_nDefaultMarginWidth == 0)
62 {
63 ms_nDefaultMarginWidth = nm.iMenuWidth;
64 ms_nLastMarginWidth = nm.iMenuWidth;
65 }
66
67 wxNativeFontInfo info;
68 memcpy(&info.lf, &nm.lfMenuFont, sizeof(LOGFONT));
69 m_font.Create(info);
70#else
71 // windows clean install default
72 m_nMinHeight = 18;
73
74 if (ms_nDefaultMarginWidth == 0)
75 {
76 ms_nDefaultMarginWidth = 18;
77 ms_nLastMarginWidth = 18;
78 }
79 if (wxNORMAL_FONT)
80 m_font = *wxNORMAL_FONT;
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81#endif
82
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83 m_bCheckable = bCheckable;
84 m_bOwnerDrawn = FALSE;
85 m_nHeight = 0;
86 m_nMarginWidth = ms_nLastMarginWidth;
87}
88
89
90// these items will be set during the first invocation of the c'tor,
91// because the values will be determined by checking the system settings,
92// which is a chunk of code
93size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 0;
94size_t wxOwnerDrawn::ms_nLastMarginWidth = 0;
95
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96
97// drawing
98// -------
99
100// get size of the item
c86f1403 101bool wxOwnerDrawn::OnMeasureItem(size_t *pwidth, size_t *pheight)
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102{
103 wxMemoryDC dc;
2bda0e17 104
f2ab8671 105 wxString str = wxStripMenuCodes(m_strName);
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106
107 // # without this menu items look too tightly packed (at least under Windows)
223d09f6 108 str += wxT('W'); // 'W' is typically the widest letter
2bda0e17 109
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110 if (m_font.Ok())
111 dc.SetFont(GetFont());
112
2bda0e17 113 dc.GetTextExtent(str, (long *)pwidth, (long *)pheight);
c7527e3f 114
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115 if (!m_strAccel.IsEmpty())
116 {
117 // measure the accelerator string, and add it's width to
118 // the total item width, plus 16 (Accelerators are right justified,
119 // with the right edge of the text rectangle 16 pixels left of
120 // the right edge of the menu)
121
122 int accel_width, accel_height;
123 dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
124 *pwidth += (accel_width + 16);
125 }
126
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127 // JACS: items still look too tightly packed, so adding 5 pixels.
128 (*pheight) = (*pheight) + 5;
c7527e3f 129
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130 // Ray Gilbert's changes - Corrects the problem of a BMP
131 // being placed next to text in a menu item, and the BMP does
33ac7e6f 132 // not match the size expected by the system. This will
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133 // resize the space so the BMP will fit. Without this, BMPs
134 // must be no larger or smaller than 16x16.
135 if (m_bmpChecked.Ok())
136 {
137 // Is BMP height larger then text height?
138 size_t adjustedHeight = m_bmpChecked.GetHeight() +
a756f210 139 wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
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140 if (*pheight < adjustedHeight)
141 *pheight = adjustedHeight;
33ac7e6f 142
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143 // Does BMP encroach on default check menu position?
144 size_t adjustedWidth = m_bmpChecked.GetWidth() +
a756f210 145 (wxSystemSettings::GetMetric(wxSYS_EDGE_X) * 2);
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146 if (ms_nDefaultMarginWidth < adjustedWidth)
147 *pwidth += adjustedWidth - ms_nDefaultMarginWidth;
33ac7e6f 148
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149 // Do we need to widen margin to fit BMP?
150 if ((size_t)GetMarginWidth() < adjustedWidth)
151 SetMarginWidth(adjustedWidth);
152 }
33ac7e6f 153
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154 // make sure that this item is at least as
155 // tall as the user's system settings specify
156 if (*pheight < m_nMinHeight)
157 *pheight = m_nMinHeight;
158
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159 m_nHeight = *pheight; // remember height for use in OnDrawItem
160
161 return TRUE;
162}
163
164// searching for this macro you'll find all the code where I'm using the native
165// Win32 GDI functions and not wxWindows ones. Might help to whoever decides to
166// port this code to X. (VZ)
167
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168// JACS: TODO. Why does a disabled but highlighted item still
169// get drawn embossed? How can we tell DrawState that we don't want the
170// embossing?
171
57c208c5 172#if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__)
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173#define O_DRAW_NATIVE_API // comments below explain why I use it
174#endif
175
176// draw the item
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177bool wxOwnerDrawn::OnDrawItem(wxDC& dc,
178 const wxRect& rc,
179 wxODAction act,
180 wxODStatus st)
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181{
182 // we do nothing on focus change
183 if ( act == wxODFocusChanged )
184 return TRUE;
185
186 // wxColor <-> RGB
19193a2c 187 #define ToRGB(col) PALETTERGB(col.Red(), col.Green(), col.Blue())
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188 #define UnRGB(col) GetRValue(col), GetGValue(col), GetBValue(col)
189
190 // set the colors
191 // --------------
192 DWORD colBack, colText;
193 if ( st & wxODSelected ) {
194 colBack = GetSysColor(COLOR_HIGHLIGHT);
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195 if (!(st & wxODDisabled))
196 {
197 colText = GetSysColor(COLOR_HIGHLIGHTTEXT);
198 }
199 else
200 {
201 colText = GetSysColor(COLOR_GRAYTEXT);
202 }
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203 }
204 else {
205 // fall back to default colors if none explicitly specified
206 colBack = m_colBack.Ok() ? ToRGB(m_colBack) : GetSysColor(COLOR_WINDOW);
207 colText = m_colText.Ok() ? ToRGB(m_colText) : GetSysColor(COLOR_WINDOWTEXT);
208 }
33ac7e6f 209
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210 #ifdef O_DRAW_NATIVE_API
211 #define hdc (HDC)dc.GetHDC()
212 COLORREF colOldText = ::SetTextColor(hdc, colText),
213 colOldBack = ::SetBkColor(hdc, colBack);
214 #else
215 dc.SetTextForeground(wxColor(UnRGB(colText)));
216 dc.SetTextBackground(wxColor(UnRGB(colBack)));
217 #endif
218
219 // select the font and draw the text
220 // ---------------------------------
221
d9cf726b 222
33ac7e6f 223 // determine where to draw and leave space for a check-mark.
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224 // Add 3 pixel padding so text appears well within highlight rectangle
225 int x = rc.x + GetMarginWidth() + 3;
226
2bda0e17 227
33ac7e6f 228 // using native API because it reckognizes '&'
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229 #ifdef O_DRAW_NATIVE_API
230 int nPrevMode = SetBkMode(hdc, TRANSPARENT);
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231 HBRUSH hbr = CreateSolidBrush(colBack),
232 hPrevBrush = (HBRUSH)SelectObject(hdc, hbr);
2bda0e17 233
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234 RECT rectFill = { rc.GetLeft(), rc.GetTop(), rc.GetRight()+1, rc.GetBottom() };
235
236 if ( st & wxODSelected && m_bmpChecked.Ok()) {
237 // only draw the highlight under the text, not under
238 // the bitmap or checkmark; leave a 1-pixel gap.
239 rectFill.left = GetMarginWidth() + 1;
240 }
241
242 FillRect(hdc, &rectFill, hbr);
2bda0e17 243
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244 DeleteObject(hbr);
245
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246 // use default font if no font set
247 HFONT hfont;
248 if ( m_font.Ok() ) {
249 m_font.RealizeResource();
250 hfont = (HFONT)m_font.GetResourceHandle();
251 }
252 else {
253 hfont = (HFONT)::GetStockObject(SYSTEM_FONT);
254 }
255
c4e7c2aa 256 HFONT hPrevFont = (HFONT) ::SelectObject(hdc, hfont);
f44b4495 257
5ac7be7a 258 wxString strMenuText = m_strName.BeforeFirst('\t');
d9cf726b 259
f44b4495 260 ::DrawState(hdc, NULL, NULL,
5ac7be7a 261 (LPARAM)strMenuText.c_str(), strMenuText.length(),
d9cf726b 262 x, rc.y + 1, rc.GetWidth(), rc.GetHeight(),
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263 DST_PREFIXTEXT |
264 (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
6d5b2a57 265
136cb3c7 266 if ( !m_strAccel.empty() )
6d5b2a57 267 {
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268 int accel_width, accel_height;
269 dc.GetTextExtent(m_strAccel, &accel_width, &accel_height);
270
271 ::DrawState(hdc, NULL, NULL,
272 (LPARAM)m_strAccel.c_str(), m_strAccel.length(),
273 rc.GetRight() - accel_width - 16, rc.y + 1, 0, 0,
274 DST_TEXT |
275 (((st & wxODDisabled) && !(st & wxODSelected)) ? DSS_DISABLED : 0));
6d5b2a57 276 }
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277
278 (void)SelectObject(hdc, hPrevBrush);
279 (void)SelectObject(hdc, hPrevFont);
280 (void)SetBkMode(hdc, nPrevMode);
281 #else
282 dc.SetFont(GetFont());
d9cf726b 283 dc.DrawText(wxStripMenuCodes(m_strName), x, rc.y);
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284 #endif //O_DRAW_NATIVE_API
285
286 // draw the bitmap
287 // ---------------
288 if ( IsCheckable() && !m_bmpChecked.Ok() ) {
289 if ( st & wxODChecked ) {
290 // using native APIs for performance and simplicity
5260b1c5 291#ifdef O_DRAW_NATIVE_API
33ac7e6f 292 // what goes on: DrawFrameControl creates a b/w mask,
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293 // then we copy it to screen to have right colors
294
295 // first create a monochrome bitmap in a memory DC
296 HDC hdcMem = CreateCompatibleDC(hdc);
297 HBITMAP hbmpCheck = CreateBitmap(GetMarginWidth(), m_nHeight, 1, 1, 0);
298 SelectObject(hdcMem, hbmpCheck);
299
300 // then draw a check mark into it
301 RECT rect = { 0, 0, GetMarginWidth(), m_nHeight };
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302 if ( m_nHeight > 0 )
303 {
f44b4495 304 ::DrawFrameControl(hdcMem, &rect, DFC_MENU, DFCS_MENUCHECK);
07cf98cb 305 }
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306
307 // finally copy it to screen DC and clean up
33ac7e6f 308 BitBlt(hdc, rc.x, rc.y, GetMarginWidth(), m_nHeight,
2bda0e17 309 hdcMem, 0, 0, SRCCOPY);
07cf98cb 310
2bda0e17 311 DeleteDC(hdcMem);
07cf98cb 312 DeleteObject(hbmpCheck);
5260b1c5 313#else
2bda0e17 314 // #### to do: perhaps using Marlett font (create equiv. font under X)
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315// wxFAIL("not implemented");
316#endif //O_DRAW_NATIVE_API
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317 }
318 }
319 else {
320 // for uncheckable item we use only the 'checked' bitmap
321 wxBitmap bmp(GetBitmap(IsCheckable() ? ((st & wxODChecked) != 0) : TRUE));
322 if ( bmp.Ok() ) {
323 wxMemoryDC dcMem(&dc);
324 dcMem.SelectObject(bmp);
325
326 // center bitmap
327 int nBmpWidth = bmp.GetWidth(),
328 nBmpHeight = bmp.GetHeight();
329
330 // there should be enough place!
331 wxASSERT((nBmpWidth <= rc.GetWidth()) && (nBmpHeight <= rc.GetHeight()));
332
f44b4495 333 int heightDiff = m_nHeight - nBmpHeight;
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334 dc.Blit(rc.x + (GetMarginWidth() - nBmpWidth) / 2,
335 rc.y + heightDiff / 2,
336 nBmpWidth, nBmpHeight,
f44b4495 337 &dcMem, 0, 0, wxCOPY, TRUE /* use mask */);
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338
339 if ( st & wxODSelected ) {
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340
341 int x1, y1, x2, y2;
342 x1 = rc.x;
343 y1 = rc.y;
344 x2 = x1 + GetMarginWidth() - 1;
345 y2 = y1 + m_nHeight - 1;
346
347 dc.SetPen(*wxWHITE_PEN);
348 dc.DrawLine(x1, y1, x2, y1);
349 dc.DrawLine(x1, y1, x1, y2);
350 dc.SetPen(*wxGREY_PEN);
351 dc.DrawLine(x1, y2-1, x2, y2-1);
352 dc.DrawLine(x2, y1, x2, y2);
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353 }
354 }
355 }
356
357 #ifdef O_DRAW_NATIVE_API
358 ::SetTextColor(hdc, colOldText);
359 ::SetBkColor(hdc, colOldBack);
360
361 #undef hdc
362 #endif //O_DRAW_NATIVE_API
363
364 return TRUE;
365}
366
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367
368#endif // wxUSE_OWNER_DRAWN
369