1 /********************************************************************************
2 * *
3 * G I F C u r s o r O b j e c t *
4 * *
5 *********************************************************************************
6 * Copyright (C) 2000,2005 by Daniel Gehriger. All Rights Reserved. *
7 *********************************************************************************
8 * This library is free software; you can redistribute it and/or *
9 * modify it under the terms of the GNU Lesser General Public *
10 * License as published by the Free Software Foundation; either *
11 * version 2.1 of the License, or (at your option) any later version. *
12 * *
13 * This library is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
16 * Lesser General Public License for more details. *
17 * *
18 * You should have received a copy of the GNU Lesser General Public *
19 * License along with this library; if not, write to the Free Software *
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. *
21 *********************************************************************************
22 * $Id: FXGIFCursor.cpp,v 1.29 2005/01/16 16:06:07 fox Exp $ *
23 ********************************************************************************/
24 #include "xincs.h"
25 #include "fxver.h"
26 #include "fxdefs.h"
27 #include "FXHash.h"
28 #include "FXThread.h"
29 #include "FXStream.h"
30 #include "FXMemoryStream.h"
31 #include "FXString.h"
32 #include "FXSize.h"
33 #include "FXPoint.h"
34 #include "FXRectangle.h"
35 #include "FXSettings.h"
36 #include "FXRegistry.h"
37 #include "FXApp.h"
38 #include "FXGIFCursor.h"
39
40
41 /*
42 Notes:
43 - Tossed old code now that FXCursor has an RGBA representation.
44 - Now uses actual alpha color from the GIF file.
45 - Need function to force alpha channel based on transparent color.
46 - Optionally let system guess a transparancy color based on the corners.
47 - If that doesn't work, you can force a specific transparency color.
48 */
49
50
51 using namespace FX;
52
53 /*******************************************************************************/
54
55 namespace FX {
56
57
58 // Suggested file extension
59 const FXchar FXGIFCursor::fileExt[]="gif";
60
61
62 // Object implementation
63 FXIMPLEMENT(FXGIFCursor,FXCursor,NULL,0)
64
65
66 // Constructor
FXGIFCursor(FXApp * a,const void * pix,FXint hx,FXint hy)67 FXGIFCursor::FXGIFCursor(FXApp* a,const void *pix,FXint hx,FXint hy):FXCursor(a,NULL,0,0,0,0){
68 if(pix){
69 FXMemoryStream ms;
70 ms.open(FXStreamLoad,(FXuchar*)pix);
71 fxloadGIF(ms,data,width,height);
72 hotx=FXCLAMP(0,hx,width-1);
73 hoty=FXCLAMP(0,hy,height-1);
74 options|=CURSOR_OWNED;
75 ms.close();
76 }
77 }
78
79
80 // Save object to stream
savePixels(FXStream & store) const81 FXbool FXGIFCursor::savePixels(FXStream& store) const {
82 if(fxsaveGIF(store,data,width,height)){
83 return TRUE;
84 }
85 return FALSE;
86 }
87
88
89 // Load object from stream
loadPixels(FXStream & store)90 FXbool FXGIFCursor::loadPixels(FXStream& store){
91 if(options&CURSOR_OWNED){FXFREE(&data);}
92 if(fxloadGIF(store,data,width,height)){
93 options|=CURSOR_OWNED;
94 return TRUE;
95 }
96 return FALSE;
97 }
98
99 }
100
101
102