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source: OGRE/trunk/ogrenew/RenderSystems/GL/src/OgreWin32Window.cpp @ 657

Revision 657, 14.6 KB checked in by mattausch, 19 years ago (diff)
added ogre dependencies and patched ogre sources

Line
1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://www.ogre3d.org/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23	-----------------------------------------------------------------------------
24	*/
25
26	#include "OgreWin32Window.h"
27	#include "OgreRoot.h"
28	#include "OgreLogManager.h"
29	#include "OgreRenderSystem.h"
30	#include "OgreImageCodec.h"
31	#include "OgreStringConverter.h"
32	#include "OgreException.h"
33	#include "OgreWin32GLSupport.h"
34	#include "OgreWin32Context.h"
35
36	namespace Ogre {
37
38	Win32Window::Win32Window(Win32GLSupport &glsupport):
39	mGLSupport(glsupport),
40	mContext(0)
41	{
42	mIsFullScreen = false;
43	mHWnd = 0;
44	mIsExternal = false;
45	mSizing = false;
46	mClosed = false;
47	mDisplayFrequency = 0;
48	mActive = false;
49	}
50
51	Win32Window::~Win32Window()
52	{
53	destroy();
54	}
55
56	void Win32Window::create(const String& name, unsigned int width, unsigned int height,
57	bool fullScreen, const NameValuePairList *miscParams)
58	{
59	// destroy current window, if any
60	if (mHWnd)
61	destroy();
62
63	HINSTANCE hInst = GetModuleHandle("RenderSystem_GL.dll");
64
65	mHWnd = 0;
66	mName = name;
67	mIsFullScreen = fullScreen;
68	mClosed = false;
69
70	// load window defaults
71	mLeft = mTop = -1; // centered
72	mWidth = width;
73	mHeight = height;
74	mDisplayFrequency = 0;
75	mIsDepthBuffered = true;
76	mColourDepth = mIsFullScreen? 32 : GetDeviceCaps(GetDC(0), BITSPIXEL);
77
78	HWND parent = 0;
79	String title = name;
80	bool vsync = false;
81	int fsaa = 0;
82	String border = "";
83	bool outerSize = false;
84
85	if(miscParams)
86	{
87	// Get variable-length params
88	NameValuePairList::const_iterator opt;
89	NameValuePairList::const_iterator end = miscParams->end();
90
91	if ((opt = miscParams->find("title")) != end)
92	title = opt->second;
93
94	if ((opt = miscParams->find("left")) != end)
95	mLeft = StringConverter::parseInt(opt->second);
96
97	if ((opt = miscParams->find("top")) != end)
98	mTop = StringConverter::parseInt(opt->second);
99
100	if ((opt = miscParams->find("depthBuffer")) != end)
101	mIsDepthBuffered = StringConverter::parseBool(opt->second);
102
103	if ((opt = miscParams->find("vsync")) != end)
104	vsync = StringConverter::parseBool(opt->second);
105
106	if ((opt = miscParams->find("FSAA")) != end)
107	fsaa = StringConverter::parseUnsignedInt(opt->second);
108
109	if ((opt = miscParams->find("externalWindowHandle")) != end)
110	{
111	mHWnd = (HWND)StringConverter::parseUnsignedInt(opt->second);
112	if (mHWnd)
113	{
114	mIsExternal = true;
115	mIsFullScreen = false;
116	}
117	}
118	// window border style
119	opt = miscParams->find("border");
120	if(opt != miscParams->end())
121	border = opt->second;
122	// set outer dimensions?
123	opt = miscParams->find("outerDimensions");
124	if(opt != miscParams->end())
125	outerSize = StringConverter::parseBool(opt->second);
126
127	if (mIsFullScreen)
128	{
129	// only available with fullscreen
130	if ((opt = miscParams->find("displayFrequency")) != end)
131	mDisplayFrequency = StringConverter::parseUnsignedInt(opt->second);
132	if ((opt = miscParams->find("colourDepth")) != end)
133	mColourDepth = StringConverter::parseUnsignedInt(opt->second);
134	}
135	else
136	{
137	// incompatible with fullscreen
138	if ((opt = miscParams->find("parentWindowHandle")) != end)
139	parent = (HWND)StringConverter::parseUnsignedInt(opt->second);
140	}
141	}
142
143	if (!mIsExternal)
144	{
145	DWORD dwStyle = WS_VISIBLE \| WS_CLIPCHILDREN \| WS_CLIPSIBLINGS;
146	DWORD dwStyleEx = 0;
147	int outerw, outerh;
148
149	if (mIsFullScreen)
150	{
151	dwStyle \|= WS_POPUP;
152	dwStyleEx \|= WS_EX_TOPMOST;
153	outerw = mWidth;
154	outerh = mHeight;
155	mLeft = mTop = 0;
156	}
157	else
158	{
159	if (border == "none")
160	dwStyle \|= WS_POPUP;
161	else if (border == "fixed")
162	dwStyle \|= WS_OVERLAPPED \| WS_BORDER \| WS_CAPTION \|
163	WS_SYSMENU \| WS_MINIMIZEBOX;
164	else
165	dwStyle \|= WS_OVERLAPPEDWINDOW;
166
167	int screenw = GetSystemMetrics(SM_CXSCREEN);
168	int screenh = GetSystemMetrics(SM_CYSCREEN);
169
170	if (!outerSize)
171	{
172	// calculate overall dimensions for requested client area
173	RECT rc = { 0, 0, mWidth, mHeight };
174	AdjustWindowRect(&rc, dwStyle, false);
175
176	// clamp window dimensions to screen size
177	outerw = (rc.right-rc.left < screenw)? rc.right-rc.left : screenw;
178	outerh = (rc.bottom-rc.top < screenh)? rc.bottom-rc.top : screenh;
179	}
180
181	// center window if given negative coordinates
182	if (mLeft < 0)
183	mLeft = (screenw - outerw) / 2;
184	if (mTop < 0)
185	mTop = (screenh - outerh) / 2;
186
187	// keep window contained in visible screen area
188	if (mLeft > screenw - outerw)
189	mLeft = screenw - outerw;
190	if (mTop > screenh - outerh)
191	mTop = screenh - outerh;
192	}
193
194	// register class and create window
195	WNDCLASS wc = { CS_OWNDC, WndProc, 0, 0, hInst,
196	LoadIcon(NULL, IDI_APPLICATION), LoadCursor(NULL, IDC_ARROW),
197	(HBRUSH)GetStockObject(BLACK_BRUSH), NULL, "OgreGLWindow" };
198	RegisterClass(&wc);
199
200	// Pass pointer to self as WM_CREATE parameter
201	mHWnd = CreateWindowEx(dwStyleEx, "OgreGLWindow", title.c_str(),
202	dwStyle, mLeft, mTop, outerw, outerh, parent, 0, hInst, this);
203
204	StringUtil::StrStreamType str;
205	str << "Created Win32Window '"
206	<< mName << "' : " << mWidth << "x" << mHeight
207	<< ", " << mColourDepth << "bpp";
208	LogManager::getSingleton().logMessage(LML_NORMAL, str.str());
209
210	if (mIsFullScreen)
211	{
212	DEVMODE dm;
213	dm.dmSize = sizeof(DEVMODE);
214	dm.dmBitsPerPel = mColourDepth;
215	dm.dmPelsWidth = mWidth;
216	dm.dmPelsHeight = mHeight;
217	dm.dmFields = DM_BITSPERPEL \| DM_PELSWIDTH \| DM_PELSHEIGHT;
218	if (mDisplayFrequency)
219	{
220	dm.dmDisplayFrequency = mDisplayFrequency;
221	dm.dmFields \|= DM_DISPLAYFREQUENCY;
222	}
223	if (ChangeDisplaySettings(&dm, CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL)
224	LogManager::getSingleton().logMessage(LML_CRITICAL, "ChangeDisplaySettings failed");
225	}
226	}
227
228	HDC old_hdc = wglGetCurrentDC();
229	HGLRC old_context = wglGetCurrentContext();
230
231	RECT rc;
232	// top and left represent outer window position
233	GetWindowRect(mHWnd, &rc);
234	mTop = rc.top;
235	mLeft = rc.left;
236	// width and height represent drawable area only
237	GetClientRect(mHWnd, &rc);
238	mWidth = rc.right;
239	mHeight = rc.bottom;
240
241	mHDC = GetDC(mHWnd);
242
243	if (!mGLSupport.selectPixelFormat(mHDC, mColourDepth, fsaa))
244	{
245	if (fsaa == 0)
246	OGRE_EXCEPT(0, "selectPixelFormat failed", "Win32Window::create");
247
248	LogManager::getSingleton().logMessage(LML_NORMAL, "FSAA level not supported, falling back");
249	if (!mGLSupport.selectPixelFormat(mHDC, mColourDepth, 0))
250	OGRE_EXCEPT(0, "selectPixelFormat failed", "Win32Window::create");
251	}
252
253	mGlrc = wglCreateContext(mHDC);
254	if (!mGlrc)
255	OGRE_EXCEPT(0, "wglCreateContext", "Win32Window::create");
256	if (!wglMakeCurrent(mHDC, mGlrc))
257	OGRE_EXCEPT(0, "wglMakeCurrent", "Win32Window::create");
258
259	wglSwapIntervalEXT(vsync? 1 : 0);
260
261	if (old_context)
262	{
263	// Restore old context
264	if (!wglMakeCurrent(old_hdc, old_context))
265	OGRE_EXCEPT(0, "wglMakeCurrent() failed", "Win32Window::create");
266
267	// Share lists with old context
268	if (!wglShareLists(old_context, mGlrc))
269	OGRE_EXCEPT(0, "wglShareLists() failed", " Win32Window::create");
270	}
271
272	// Create RenderSystem context
273	mContext = new Win32Context(mHDC, mGlrc);
274	// Register the context with the rendersystem and associate it with this window
275	GLRenderSystem rs = static_cast<GLRenderSystem>(Root::getSingleton().getRenderSystem());
276	rs->_registerContext(this, mContext);
277
278	mActive = true;
279	}
280
281	void Win32Window::destroy(void)
282	{
283	if (!mHWnd)
284	return;
285
286	// Unregister and destroy OGRE GLContext
287	if (mContext)
288	{
289	GLRenderSystem rs = static_cast<GLRenderSystem>(Root::getSingleton().getRenderSystem());
290	rs->_unregisterContext(this);
291	delete mContext;
292	mContext = 0;
293	}
294	if (mGlrc)
295	{
296	wglDeleteContext(mGlrc);
297	mGlrc = 0;
298	}
299	if (!mIsExternal)
300	{
301	if (mIsFullScreen)
302	ChangeDisplaySettings(NULL, 0);
303	DestroyWindow(mHWnd);
304	}
305	mActive = false;
306	mHDC = 0; // no release thanks to CS_OWNDC wndclass style
307	mHWnd = 0;
308	}
309
310	bool Win32Window::isVisible() const
311	{
312	return (mHWnd && !IsIconic(mHWnd));
313	}
314
315	bool Win32Window::isClosed() const
316	{
317	return mClosed;
318	}
319
320	void Win32Window::reposition(int left, int top)
321	{
322	if (mHWnd && !mIsFullScreen)
323	{
324	SetWindowPos(mHWnd, 0, left, top, 0, 0,
325	SWP_NOSIZE \| SWP_NOZORDER \| SWP_NOACTIVATE);
326	}
327	}
328
329	void Win32Window::resize(unsigned int width, unsigned int height)
330	{
331	if (mHWnd && !mIsFullScreen)
332	{
333	RECT rc = { 0, 0, width, height };
334	AdjustWindowRect(&rc, GetWindowLong(mHWnd, GWL_STYLE), false);
335	width = rc.right - rc.left;
336	height = rc.bottom - rc.top;
337	SetWindowPos(mHWnd, 0, 0, 0, width, height,
338	SWP_NOMOVE \| SWP_NOZORDER \| SWP_NOACTIVATE);
339	}
340	}
341
342	void Win32Window::windowMovedOrResized()
343	{
344	if (!isVisible())
345	return;
346
347	RECT rc;
348	// top and left represent outer window position
349	GetWindowRect(mHWnd, &rc);
350	mTop = rc.top;
351	mLeft = rc.left;
352	// width and height represent drawable area only
353	GetClientRect(mHWnd, &rc);
354
355	if (mWidth == rc.right && mHeight == rc.bottom)
356	return;
357
358	mWidth = rc.right;
359	mHeight = rc.bottom;
360
361	// Notify viewports of resize
362	ViewportList::iterator it, itend;
363	itend = mViewportList.end();
364	for( it = mViewportList.begin(); it != itend; ++it )
365	(*it).second->_updateDimensions();
366	}
367
368	void Win32Window::swapBuffers(bool waitForVSync)
369	{
370	SwapBuffers(mHDC);
371	}
372
373	void Win32Window::writeContentsToFile(const String& filename)
374	{
375	ImageCodec::ImageData *imgData = new ImageCodec::ImageData();
376	imgData->width = mWidth;
377	imgData->height = mHeight;
378	imgData->depth = 1;
379	imgData->format = PF_BYTE_RGB;
380
381	// Allocate buffer
382	uchar* pBuffer = new uchar[mWidth * mHeight * 3];
383
384	// Read pixels
385	// I love GL: it does all the locking & colour conversion for us
386	glReadPixels(0,0, mWidth-1, mHeight-1, GL_RGB, GL_UNSIGNED_BYTE, pBuffer);
387
388	// Wrap buffer in a memory stream
389	DataStreamPtr stream(new MemoryDataStream(pBuffer, mWidth * mHeight * 3, false));
390
391	// Need to flip the read data over in Y though
392	Image img;
393	img.loadRawData(stream, mWidth, mHeight, imgData->format );
394	img.flipAroundX();
395
396	MemoryDataStreamPtr streamFlipped(new MemoryDataStream(img.getData(), stream->size(), false));
397
398	// Get codec
399	size_t pos = filename.find_last_of(".");
400	String extension;
401	if( pos == String::npos )
402	OGRE_EXCEPT(
403	Exception::ERR_INVALIDPARAMS,
404	"Unable to determine image type for '" + filename + "' - invalid extension.",
405	"Win32Window::writeContentsToFile" );
406
407	while( pos != filename.length() - 1 )
408	extension += filename[++pos];
409
410	// Get the codec
411	Codec * pCodec = Codec::getCodec(extension);
412
413	// Write out
414	Codec::CodecDataPtr ptr(imgData);
415	pCodec->codeToFile(streamFlipped, filename, ptr);
416
417	delete [] pBuffer;
418	}
419
420	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
421	uchar *Win32Window::getBufferContents(int &dimx, int &dimy)
422	{
423	dimx = mWidth;
424	dimy = mHeight;
425
426	// Allocate buffer
427	uchar* pBuffer = new uchar[mWidth * mHeight * 3];
428
429	// Read pixels
430	// I love GL: it does all the locking & colour conversion for us
431	glReadPixels(0, 0, mWidth-1, mHeight-1, GL_RGB, GL_UNSIGNED_BYTE, pBuffer);
432
433	return pBuffer;
434	}
435	#endif // GTP_VISIBILITY_MODIFIED_OGRE
436
437	// Window procedure callback
438	// This is a static member, so applies to all windows but we store the
439	// Win32Window instance in the window data GetWindowLog/SetWindowLog
440	LRESULT Win32Window::WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
441	{
442
443	if (uMsg == WM_CREATE)
444	{
445	// Store pointer to Win32Window in user data area
446	SetWindowLong(hWnd, GWL_USERDATA,
447	(LONG)(((LPCREATESTRUCT)lParam)->lpCreateParams));
448	return 0;
449	}
450
451	// look up window instance
452	// note: it is possible to get a WM_SIZE before WM_CREATE
453	Win32Window* win = (Win32Window*)GetWindowLong(hWnd, GWL_USERDATA);
454	if (!win)
455	return DefWindowProc(hWnd, uMsg, wParam, lParam);
456
457	switch( uMsg )
458	{
459	case WM_ACTIVATE:
460	if (win->mIsFullScreen)
461	{
462	if (LOWORD(wParam) == WA_INACTIVE)
463	{
464	win->mActive = false;
465	ChangeDisplaySettings(NULL, 0);
466	ShowWindow(hWnd, SW_SHOWMINNOACTIVE);
467	}
468	else
469	{
470	win->mActive = true;
471	ShowWindow(hWnd, SW_SHOWNORMAL);
472
473	DEVMODE dm;
474	dm.dmSize = sizeof(DEVMODE);
475	dm.dmBitsPerPel = win->mColourDepth;
476	dm.dmPelsWidth = win->mWidth;
477	dm.dmPelsHeight = win->mHeight;
478	dm.dmFields = DM_BITSPERPEL \| DM_PELSWIDTH \| DM_PELSHEIGHT;
479	if (win->mDisplayFrequency)
480	{
481	dm.dmDisplayFrequency = win->mDisplayFrequency;
482	dm.dmFields \|= DM_DISPLAYFREQUENCY;
483	}
484	ChangeDisplaySettings(&dm, CDS_FULLSCREEN);
485	}
486	}
487	break;
488
489	case WM_ENTERSIZEMOVE:
490	win->mSizing = true;
491	break;
492
493	case WM_EXITSIZEMOVE:
494	win->windowMovedOrResized();
495	win->mSizing = false;
496	break;
497
498	case WM_MOVE:
499	case WM_SIZE:
500	if (!win->mSizing)
501	win->windowMovedOrResized();
502	break;
503
504	case WM_GETMINMAXINFO:
505	// Prevent the window from going smaller than some minimu size
506	((MINMAXINFO*)lParam)->ptMinTrackSize.x = 100;
507	((MINMAXINFO*)lParam)->ptMinTrackSize.y = 100;
508	break;
509
510	case WM_CLOSE:
511	win->destroy(); // will call DestroyWindow
512	win->mClosed = true;
513	return 0;
514	}
515
516	return DefWindowProc( hWnd, uMsg, wParam, lParam );
517	}
518
519	void Win32Window::getCustomAttribute( const String& name, void* pData )
520	{
521	if( name == "HWND" )
522	{
523	HWND pHwnd = (HWND)pData;
524	*pHwnd = getWindowHandle();
525	return;
526	}
527	}
528
529	}

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