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miscellaneous small enhancements
[wxWidgets.git] / src / os2 / ownerdrw.cpp
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/os2/ownerdrw.cpp
3 // Purpose: implementation of wxOwnerDrawn class
4 // Author: David Webster
5 // Modified by:
6 // Created: 10/12/99
7 // RCS-ID: $Id$
8 // Copyright: (c) David Webster
9 // Licence: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // For compilers that support precompilation, includes "wx.h".
13 #include "wx/wxprec.h"
14
15 #if wxUSE_OWNER_DRAWN
16
17 #ifndef WX_PRECOMP
18 #include "wx/window.h"
19 #include "wx/os2/private.h"
20 #include "wx/font.h"
21 #include "wx/bitmap.h"
22 #include "wx/dcmemory.h"
23 #include "wx/menu.h"
24 #include "wx/utils.h"
25 #include "wx/settings.h"
26 #include "wx/menuitem.h"
27 #endif
28
29 #include "wx/ownerdrw.h"
30 #include "wx/os2/dcclient.h"
31
32 // ============================================================================
33 // implementation of wxOwnerDrawn class
34 // ============================================================================
35
36 //
37 // ctor
38 // ----
39 //
40 wxOwnerDrawn::wxOwnerDrawn( const wxString& rsStr,
41 bool bCheckable,
42 bool WXUNUSED(bMenuItem) )
43 : m_strName(rsStr)
44 {
45 m_bCheckable = bCheckable;
46 m_bOwnerDrawn = false;
47 m_nHeight = 0;
48 m_nMarginWidth = ms_nLastMarginWidth;
49 if (wxNORMAL_FONT)
50 m_font = *wxNORMAL_FONT;
51 } // end of wxOwnerDrawn::wxOwnerDrawn
52
53 wxOwnerDrawn::~wxOwnerDrawn() { }
54
55 size_t wxOwnerDrawn::ms_nDefaultMarginWidth = 15;
56
57 size_t wxOwnerDrawn::ms_nLastMarginWidth = ms_nDefaultMarginWidth;
58
59 //
60 // Drawing
61 // -------
62 //
63
64 bool wxOwnerDrawn::OnMeasureItem( size_t* pWidth,
65 size_t* pHeight )
66 {
67 wxMemoryDC vDC;
68
69 wxString sStr = wxStripMenuCodes(m_strName);
70
71 //
72 // If we have a valid accel string, then pad out
73 // the menu string so that the menu and accel string are not
74 // placed on top of each other.
75 if (!m_strAccel.empty() )
76 {
77 sStr.Pad(sStr.length()%8);
78 sStr += m_strAccel;
79 }
80 vDC.SetFont(GetFont());
81 vDC.GetTextExtent( sStr
82 ,(wxCoord *)pWidth
83 ,(wxCoord *)pHeight
84 );
85 if (!m_strAccel.empty())
86 {
87 //
88 // Measure the accelerator string, and add its width to
89 // the total item width, plus 16 (Accelerators are right justified,
90 // with the right edge of the text rectangle 16 pixels left of
91 // the right edge of the menu)
92 //
93 int nAccelWidth;
94 int nAccelHeight;
95
96 vDC.GetTextExtent( m_strAccel
97 ,&nAccelWidth
98 ,&nAccelHeight
99 );
100 *pWidth += nAccelWidth;
101 }
102
103 //
104 // Add space at the end of the menu for the submenu expansion arrow.
105 // This will also allow offsetting the accel string from the right edge
106 //
107 *pWidth = (size_t)(*pWidth + GetDefaultMarginWidth() * 1.5);
108
109 //
110 // JACS: items still look too tightly packed, so adding 5 pixels.
111 //
112 (*pHeight) += 5;
113
114 //
115 // Ray Gilbert's changes - Corrects the problem of a BMP
116 // being placed next to text in a menu item, and the BMP does
117 // not match the size expected by the system. This will
118 // resize the space so the BMP will fit. Without this, BMPs
119 // must be no larger or smaller than 16x16.
120 //
121 if (m_bmpChecked.Ok())
122 {
123 //
124 // Is BMP height larger then text height?
125 //
126 size_t nAdjustedHeight = m_bmpChecked.GetHeight() +
127 wxSystemSettings::GetMetric(wxSYS_EDGE_Y);
128 if (*pHeight < nAdjustedHeight)
129 *pHeight = nAdjustedHeight;
130
131 //
132 // Does BMP encroach on default check menu position?
133 //
134 size_t nAdjustedWidth = m_bmpChecked.GetWidth() +
135 (wxSystemSettings::GetMetric(wxSYS_EDGE_X) * 2);
136
137 //
138 // Do we need to widen margin to fit BMP?
139 //
140 if ((size_t)GetMarginWidth() < nAdjustedWidth)
141 SetMarginWidth(nAdjustedWidth);
142
143 //
144 // Add the size of the bitmap to our total size...
145 //
146 *pWidth += GetMarginWidth();
147 }
148
149 //
150 // Add the size of the bitmap to our total size - even if we don't have
151 // a bitmap we leave room for one...
152 //
153 *pWidth += GetMarginWidth();
154
155 //
156 // Make sure that this item is at least as
157 // tall as the user's system settings specify
158 //
159 const size_t heightStd = 6; // FIXME: get value from the system
160 if ( *pHeight < heightStd )
161 *pHeight = heightStd;
162 m_nHeight = *pHeight; // remember height for use in OnDrawItem
163 return true;
164 } // end of wxOwnerDrawn::OnMeasureItem
165
166 // draw the item
167 bool wxOwnerDrawn::OnDrawItem( wxDC& rDC,
168 const wxRect& rRect,
169 wxODAction eAction,
170 wxODStatus eStatus )
171 {
172 //
173 // We do nothing on focus change
174 //
175 if (eAction == wxODFocusChanged )
176 return true;
177
178 //
179 // Select the font and draw the text
180 // ---------------------------------
181 //
182
183 CHARBUNDLE vCbnd;
184 wxPMDCImpl *impl = (wxPMDCImpl*) rDC.GetImpl();
185 HPS hPS= impl->GetHPS();
186 wxColour vColBack;
187 wxColour vColText;
188 COLORREF vRef;
189 RECTL vRect = {rRect.x + 4, rRect.y + 1, rRect.x + (rRect.width - 2), rRect.y + rRect.height};
190
191 memset(&vCbnd, 0, sizeof(CHARBUNDLE));
192
193 //
194 // Use default font if no font set
195 //
196 if (m_font.Ok())
197 {
198 m_font.RealizeResource();
199 }
200 else
201 {
202 ::GpiSetCharSet(hPS, LCID_DEFAULT);
203 }
204
205 //
206 // Based on the status of the menu item, pick the right colors
207 //
208 if (eStatus & wxODSelected)
209 {
210 vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
211 ,SYSCLR_MENUHILITEBGND
212 ,0L
213 );
214 vColBack.Set( GetRValue(vRef)
215 ,GetGValue(vRef)
216 ,GetBValue(vRef)
217 );
218 vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
219 ,SYSCLR_MENUHILITE
220 ,0L
221 );
222 vColText.Set( GetRValue(vRef)
223 ,GetGValue(vRef)
224 ,GetBValue(vRef)
225 );
226 }
227 else if (eStatus & wxODDisabled)
228 {
229 vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
230 ,SYSCLR_MENU // Light gray
231 ,0L
232 );
233 vColBack.Set( GetRValue(vRef)
234 ,GetGValue(vRef)
235 ,GetBValue(vRef)
236 );
237 vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
238 ,SYSCLR_MENUDISABLEDTEXT // dark gray
239 ,0L
240 );
241 vColText.Set( GetRValue(vRef)
242 ,GetGValue(vRef)
243 ,GetBValue(vRef)
244 );
245 }
246 else
247 {
248 //
249 // Fall back to default colors if none explicitly specified
250 //
251 vRef = ::WinQuerySysColor( HWND_DESKTOP
252 ,SYSCLR_MENU // we are using gray for all our window backgrounds in wxWidgets
253 ,0L
254 );
255 vColBack.Set( GetRValue(vRef)
256 ,GetGValue(vRef)
257 ,GetBValue(vRef)
258 );
259 vRef = ::WinQuerySysColor( HWND_DESKTOP
260 ,SYSCLR_WINDOWTEXT // Black
261 ,0L
262 );
263 vColText.Set( GetRValue(vRef)
264 ,GetGValue(vRef)
265 ,GetBValue(vRef)
266 );
267 }
268
269 rDC.SetTextBackground(vColBack);
270 rDC.SetTextForeground(vColText);
271 rDC.SetBackgroundMode(wxTRANSPARENT);
272 vCbnd.lColor = vColText.GetPixel();
273 vCbnd.lBackColor = vColBack.GetPixel();
274 ::GpiSetAttrs( hPS
275 ,PRIM_CHAR
276 ,CBB_BACK_COLOR | CBB_COLOR
277 ,0
278 ,&vCbnd
279 );
280 ::GpiSetBackMix( hPS
281 ,BM_LEAVEALONE
282 );
283
284 //
285 // Paint the background
286 //
287 ::WinFillRect(hPS, &vRect, vColBack.GetPixel());
288
289 //
290 // Determine where to draw and leave space for a check-mark.
291 //
292 int nX = rRect.x + GetMarginWidth();
293
294 //
295 // Unfortunately, unlike Win32, PM has no owner drawn specific text
296 // drawing methods like ::DrawState that can cleanly handle accel
297 // mnemonics and deal, automatically, with various states, so we have
298 // to handle them ourselves. Notice Win32 can't handle \t in ownerdrawn
299 // strings either. We cannot handle mnemonics either. We display
300 // them, though, in the hope we can figure them out some day.
301 //
302
303 //
304 // Display main text and accel text separately to align better
305 //
306 wxString sTgt = wxT("\t");
307 wxString sFullString = m_strName; // need to save the original text
308 wxString sAccel;
309 int nIndex;
310 size_t nWidth;
311 size_t nCharWidth;
312 size_t nHeight;
313 bool bFoundMnemonic = false;
314 bool bFoundAccel = false;
315
316 //
317 // Deal with the tab, extracting the Accel text
318 //
319 nIndex = sFullString.Find(sTgt);
320 if (nIndex != -1)
321 {
322 bFoundAccel = true;
323 sAccel = sFullString.Mid(nIndex + 1);
324 sFullString.Remove(nIndex);
325 }
326
327 //
328 // Deal with the mnemonic character
329 //
330 sTgt = wxT("~");
331 nIndex = sFullString.Find(sTgt);
332 if (nIndex != -1)
333 {
334 wxString sTmp = sFullString;
335
336 bFoundMnemonic = true;
337 sTmp.Remove(nIndex);
338 rDC.GetTextExtent( sTmp
339 ,(wxCoord *)&nWidth
340 ,(wxCoord *)&nHeight
341 );
342 sTmp = sFullString[(size_t)(nIndex + 1)];
343 rDC.GetTextExtent( sTmp
344 ,(wxCoord *)&nCharWidth
345 ,(wxCoord *)&nHeight
346 );
347 sFullString.Replace(sTgt.c_str(), wxEmptyString, true);
348 }
349
350 //
351 // Draw the main item text sans the accel text
352 //
353 POINTL vPntStart = {nX, rRect.y + 4};
354 ::GpiCharStringAt( impl->GetHPS()
355 ,&vPntStart
356 ,sFullString.length()
357 ,sFullString.char_str()
358 );
359 if (bFoundMnemonic)
360 {
361 //
362 // Underline the mnemonic -- still won't work, but at least it "looks" right
363 //
364 wxPen vPen;
365 POINTL vPntEnd = {nX + nWidth + nCharWidth - 3, rRect.y + 2}; //CharWidth is bit wide
366
367 vPntStart.x = nX + nWidth - 1;
368 vPntStart.y = rRect.y + 2; // Make it look pretty!
369 vPen = wxPen(vColText, 1, wxSOLID); // Assuming we are always black
370 rDC.SetPen(vPen);
371 ::GpiMove(hPS, &vPntStart);
372 ::GpiLine(hPS, &vPntEnd);
373 }
374
375 //
376 // Now draw the accel text
377 //
378 if (bFoundAccel)
379 {
380 size_t nWidth;
381 size_t nHeight;
382
383 rDC.GetTextExtent( sAccel
384 ,(wxCoord *)&nWidth
385 ,(wxCoord *)&nHeight
386 );
387 //
388 // Back off the starting position from the right edge
389 //
390 vPntStart.x = rRect.width - (nWidth + 7);
391 vPntStart.y = rRect.y + 4;
392 ::GpiCharStringAt( impl->GetHPS()
393 ,&vPntStart
394 ,sAccel.length()
395 ,sAccel.char_str()
396 );
397 }
398
399 //
400 // Draw the bitmap
401 // ---------------
402 //
403 if (IsCheckable() && !m_bmpChecked.Ok())
404 {
405 if (eStatus & wxODChecked)
406 {
407 RECTL vRect;
408 HBITMAP hBmpCheck = ::WinGetSysBitmap(HWND_DESKTOP, SBMP_MENUCHECK);
409
410 vRect.xLeft = rRect.x;
411 vRect.xRight = rRect.x + GetMarginWidth();
412 vRect.yBottom = rRect.y;
413 vRect.yTop = rRect.y + m_nHeight - 3;
414
415 ::WinDrawBitmap( hPS // PS for this menuitem
416 ,hBmpCheck // system checkmark
417 ,NULL // draw the whole bitmap
418 ,(PPOINTL)&vRect // destination -- bottom left corner of the menuitem area
419 ,0L // ignored
420 ,0L // draw a bitmap
421 ,DBM_NORMAL // draw normal size
422 );
423 }
424 }
425 else
426 {
427 //
428 // For uncheckable item we use only the 'checked' bitmap
429 //
430 wxBitmap vBmp(GetBitmap(IsCheckable() ? ((eStatus & wxODChecked) != 0) : TRUE));
431
432 if (vBmp.Ok())
433 {
434
435 wxMemoryDC vDCMem(&rDC);
436 wxMemoryDC* pOldDC = (wxMemoryDC*)vBmp.GetSelectedInto();
437
438 if(pOldDC != NULL)
439 {
440 vBmp.SetSelectedInto(NULL);
441 }
442 vDCMem.SelectObject(vBmp);
443
444 //
445 // Center bitmap
446 //
447 int nBmpWidth = vBmp.GetWidth();
448 int nBmpHeight = vBmp.GetHeight();
449
450 //
451 // There should be enough space!
452 //
453 wxASSERT((nBmpWidth <= rRect.width) && (nBmpHeight <= rRect.height));
454
455 int nHeightDiff = m_nHeight - nBmpHeight;
456
457 rDC.Blit( rRect.x + (GetMarginWidth() - nBmpWidth) / 2
458 ,rRect.y + nHeightDiff / 2
459 ,nBmpWidth
460 ,nBmpHeight
461 ,&vDCMem
462 ,0
463 ,0
464 ,wxCOPY
465 ,true
466 );
467
468 if (eStatus & wxODSelected)
469 {
470 POINTL vPnt1 = {rRect.x + 1, rRect.y + 3}; // Leave a little background border
471 POINTL vPnt2 = {rRect.x + GetMarginWidth(), rRect.y + m_nHeight - 3};
472
473 LINEBUNDLE vLine;
474
475 vLine.lColor = vColBack.GetPixel();
476 ::GpiSetAttrs( hPS
477 ,PRIM_LINE
478 ,LBB_COLOR
479 ,0
480 ,&vLine
481 );
482 ::GpiMove(hPS, &vPnt1);
483 ::GpiBox( hPS
484 ,DRO_OUTLINE
485 ,&vPnt2
486 ,0L
487 ,0L
488 );
489 }
490 vBmp.SetSelectedInto(NULL);
491 }
492 }
493 return true;
494 } // end of wxOwnerDrawn::OnDrawItem
495
496 #endif //wxUSE_OWNER_DRAWN
wxWidgets (Impactor)