1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* Damien Doligez, projet Para, INRIA Rocquencourt */
/* */
/* Copyright 1997 Institut National de Recherche en Informatique et */
/* en Automatique. Distributed only by permission. */
/* */
/***********************************************************************/
/* $Id$ */
#include "main.h"
static DragTrackingHandlerUPP MyTrackingHandlerUPP = NULL;
static DragReceiveHandlerUPP MyReceiveHandlerUPP = NULL;
static OSErr ToplevelTrackDrag (DragTrackingMessage message, DragReference drag)
{
static int canacceptdrag = 0;
static int hilited = 0;
WEReference we = WinGetWE (winToplevel);
short readonly;
Point mouse;
RgnHandle rgn = NewRgn ();
Rect viewrect;
LongRect lviewrect;
OSErr err;
DragAttributes attributes;
Assert (we != NULL);
switch (message){
case kDragTrackingEnterWindow:
readonly = WEFeatureFlag (weFReadOnly, weBitTest, we);
WEFeatureFlag (weFReadOnly, weBitClear, we);
canacceptdrag = WECanAcceptDrag (drag, we);
if (readonly) WEFeatureFlag (weFReadOnly, weBitSet, we);
break;
case kDragTrackingInWindow:
if (canacceptdrag){
err = GetDragAttributes (drag, &attributes);
if (err != noErr) goto failed;
err = GetDragMouse (drag, &mouse, nil);
if (err != noErr) goto failed;
GlobalToLocal (&mouse);
WEGetViewRect (&lviewrect, we);
WELongRectToRect (&lviewrect, &viewrect);
InsetRect (&viewrect, -kTextMarginH, 0);
if (PtInRect (mouse, &viewrect)){
if (!hilited && (attributes & kDragHasLeftSenderWindow)){
RectRgn (rgn, &viewrect);
InsetRgn (rgn, 0, -kTextMarginV);
ShowDragHilite (drag, rgn, true);
DisposeRgn (rgn);
hilited = 1;
}
}else{
if (hilited){
HideDragHilite (drag);
hilited = 0;
}
}
}
break;
case kDragTrackingLeaveWindow:
if (hilited){
HideDragHilite (drag);
hilited = 0;
}
break;
default: break;
}
return noErr;
failed: return err;
}
static pascal OSErr MyTrackingHandler (DragTrackingMessage message, WindowPtr w,
void *refCon, DragReference drag)
{
#pragma unused (refCon)
WEReference we;
switch (WinGetKind (w)){
case kWinUnknown:
case kWinUninitialised:
case kWinAbout:
case kWinGraphics:
case kWinPrefs:
case kWinClipboard:
return noErr;
case kWinToplevel:
return ToplevelTrackDrag (message, drag);
case kWinDocument:
we = WinGetWE (w); Assert (we != NULL);
return WETrackDrag (message, drag, we);
default:
Assert (0);
return noErr;
}
}
static OSErr ToplevelReceiveDrag (DragReference drag, WEReference we)
{
GrafPtr saveport;
short readonly = 0;
Boolean canaccept;
OSErr err;
Point mouse;
LongRect lviewrect;
Rect viewrect;
UInt16 nitems;
UInt16 i;
ItemReference itemref;
Handle h = NULL;
Size sz, curlen;
long dest, selstart, selend = -1;
PushWindowPort (winToplevel);
readonly = WEFeatureFlag (weFReadOnly, weBitTest, we);
if (readonly) WEFeatureFlag (weFReadOnly, weBitClear, we);
canaccept = WECanAcceptDrag (drag, we);
if (!canaccept){ err = badDragFlavorErr; goto failed; }
err = GetDragMouse (drag, &mouse, nil);
if (err != noErr) goto failed;
GlobalToLocal (&mouse);
WEGetViewRect (&lviewrect, we);
WELongRectToRect (&lviewrect, &viewrect);
if (!PtInRect (mouse, &viewrect)){ err = dragNotAcceptedErr; goto failed; }
/* XXX Ne pas coller si le drag vient de la mme fentre et la souris
est revenue dans la slection. */
h = NewHandle (0);
err = MemError (); if (err != noErr) goto failed;
curlen = 0;
err = CountDragItems (drag, &nitems);
if (err != noErr) goto failed;
for (i = 1; i <= nitems; i++){
err = GetDragItemReferenceNumber (drag, i, &itemref);
if (err != noErr) goto failed;
err = GetFlavorDataSize (drag, itemref, kTypeText, &sz);
if (err != noErr) goto failed;
SetHandleSize (h, curlen + sz);
err = MemError (); if (err != noErr) goto failed;
HLock (h);
err = GetFlavorData (drag, itemref, kTypeText, (*h)+curlen, &sz, 0);
HUnlock (h);
if (err != noErr) goto failed;
curlen += sz;
}
dest = WEGetTextLength (we);
WEGetSelection (&selstart, &selend, we);
WESetSelection (dest, dest, we);
WESetStyle (weDoFont + weDoFace + weDoSize + weDoColor + weDoReplaceFace,
&prefs.unread, we);
HLock (h);
err = WEInsert (*h, curlen, NULL, NULL, we);
HUnlock (h);
if (err != noErr) goto failed;
WESetSelection (dest + curlen, dest + curlen, we);
DisposeHandle (h);
PopPort;
return noErr;
failed:
if (h != NULL) DisposeHandle (h);
if (selend != -1) WESetSelection (selstart, selend, we);
if (readonly) WEFeatureFlag (weFReadOnly, weBitSet, we);
PopPort;
return err;
}
static pascal OSErr MyReceiveHandler (WindowPtr w, void *refCon,
DragReference drag)
{
#pragma unused (refCon)
WEReference we;
switch (WinGetKind (w)){
case kWinUnknown:
case kWinUninitialised:
case kWinAbout:
case kWinGraphics:
case kWinPrefs:
case kWinClipboard:
return noErr;
case kWinToplevel:
we = WinGetWE (w); Assert (we != NULL);
return ToplevelReceiveDrag (drag, we);
case kWinDocument:
we = WinGetWE (w); Assert (we != NULL);
return WEReceiveDrag (drag, we);
default:
Assert (0);
return noErr;
}
}
OSErr InstallDragHandlers (void)
{
OSErr err;
MyTrackingHandlerUPP = NewDragTrackingHandlerProc (MyTrackingHandler);
MyReceiveHandlerUPP = NewDragReceiveHandlerProc (MyReceiveHandler);
err = InstallTrackingHandler (MyTrackingHandlerUPP, NULL, NULL);
if (err != noErr) return err;
err = InstallReceiveHandler (MyReceiveHandlerUPP, NULL, NULL);
if (err != noErr){
RemoveTrackingHandler (MyTrackingHandlerUPP, NULL);
return err;
}
return noErr;
}
OSErr RemoveDragHandlers (void)
{
OSErr err1, err2;
err1 = RemoveTrackingHandler (MyTrackingHandlerUPP, NULL);
err2 = RemoveReceiveHandler (MyReceiveHandlerUPP, NULL);
if (err2 != noErr && err1 == noErr) return err2;
return err1;
}
|
