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
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
|
/*
* Scroll windows and DCs
*
* Copyright David W. Metcalfe, 1993
* Alex Korobka 1995,1996
*
*
*/
#include <stdlib.h>
#include "wine/winuser16.h"
#include "winuser.h"
#include "dc.h"
#include "win.h"
#include "gdi.h"
#include "dce.h"
#include "region.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(scroll)
/*************************************************************************
* ScrollWindow16 (USER.61)
*/
void WINAPI ScrollWindow16(HWND16 hwnd, INT16 dx, INT16 dy, const RECT16 *rect,
const RECT16 *clipRect )
{
RECT rect32, clipRect32;
if (rect) CONV_RECT16TO32( rect, &rect32 );
if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 );
ScrollWindow( hwnd, dx, dy, rect ? &rect32 : NULL,
clipRect ? &clipRect32 : NULL );
}
/*************************************************************************
* ScrollWindow32 (USER32.450)
*
*/
BOOL WINAPI ScrollWindow( HWND hwnd, INT dx, INT dy,
const RECT *rect, const RECT *clipRect )
{
return
(ERROR != ScrollWindowEx( hwnd, dx, dy, rect, clipRect, 0, NULL,
(rect ? 0 : SW_SCROLLCHILDREN) |
SW_INVALIDATE ));
}
/*************************************************************************
* ScrollDC16 (USER.221)
*/
BOOL16 WINAPI ScrollDC16( HDC16 hdc, INT16 dx, INT16 dy, const RECT16 *rect,
const RECT16 *cliprc, HRGN16 hrgnUpdate,
LPRECT16 rcUpdate )
{
RECT rect32, clipRect32, rcUpdate32;
BOOL16 ret;
if (rect) CONV_RECT16TO32( rect, &rect32 );
if (cliprc) CONV_RECT16TO32( cliprc, &clipRect32 );
ret = ScrollDC( hdc, dx, dy, rect ? &rect32 : NULL,
cliprc ? &clipRect32 : NULL, hrgnUpdate, &rcUpdate32 );
if (rcUpdate) CONV_RECT32TO16( &rcUpdate32, rcUpdate );
return ret;
}
/*************************************************************************
* ScrollDC32 (USER32.449)
*
* Only the hrgnUpdate is return in device coordinate.
* rcUpdate must be returned in logical coordinate to comply with win API.
*
*/
BOOL WINAPI ScrollDC( HDC hdc, INT dx, INT dy, const RECT *rc,
const RECT *prLClip, HRGN hrgnUpdate,
LPRECT rcUpdate )
{
RECT rect, rClip, rSrc;
POINT src, dest;
DC *dc = (DC *)GDI_GetObjPtr(hdc, DC_MAGIC);
TRACE("%04x %d,%d hrgnUpdate=%04x rcUpdate = %p cliprc = (%d,%d-%d,%d), rc=(%d,%d-%d,%d)\n",
(HDC16)hdc, dx, dy, hrgnUpdate, rcUpdate,
prLClip ? prLClip->left : 0, prLClip ? prLClip->top : 0, prLClip ? prLClip->right : 0, prLClip ? prLClip->bottom : 0,
rc ? rc->left : 0, rc ? rc->top : 0, rc ? rc->right : 0, rc ? rc->bottom : 0 );
if ( !dc || !hdc ) return FALSE;
/*
TRACE(scroll,"\t[wndOrgX=%i, wndExtX=%i, vportOrgX=%i, vportExtX=%i]\n",
dc->wndOrgX, dc->wndExtX, dc->vportOrgX, dc->vportExtX );
TRACE(scroll,"\t[wndOrgY=%i, wndExtY=%i, vportOrgY=%i, vportExtY=%i]\n",
dc->wndOrgY, dc->wndExtY, dc->vportOrgY, dc->vportExtY );
*/
/* compute device clipping region */
if ( rc )
rect = *rc;
else /* maybe we should just return FALSE? */
GetClipBox( hdc, &rect );
if (prLClip)
IntersectRect( &rClip,&rect,prLClip );
else
rClip = rect;
rSrc = rClip;
OffsetRect( &rSrc, -dx, -dy );
IntersectRect( &rSrc, &rSrc, &rect );
if(dc->w.hVisRgn)
{
if (!IsRectEmpty(&rSrc))
{
dest.x = (src.x = rSrc.left) + dx;
dest.y = (src.y = rSrc.top) + dy;
/* copy bits */
if (!BitBlt( hdc, dest.x, dest.y,
rSrc.right - rSrc.left, rSrc.bottom - rSrc.top,
hdc, src.x, src.y, SRCCOPY))
{
GDI_HEAP_UNLOCK( hdc );
return FALSE;
}
}
/* compute update areas */
if (hrgnUpdate || rcUpdate)
{
HRGN hrgn =
(hrgnUpdate) ? hrgnUpdate : CreateRectRgn( 0,0,0,0 );
HRGN hrgn2;
dx = XLPTODP ( dc, rect.left + dx) - XLPTODP ( dc, rect.left);
dy = YLPTODP ( dc, rect.top + dy) - YLPTODP ( dc, rect.top);
LPtoDP( hdc, (LPPOINT)&rect, 2 );
LPtoDP( hdc, (LPPOINT)&rClip, 2 );
hrgn2 = CreateRectRgnIndirect( &rect );
OffsetRgn( hrgn2, dc->w.DCOrgX, dc->w.DCOrgY );
CombineRgn( hrgn2, hrgn2, dc->w.hVisRgn, RGN_AND );
OffsetRgn( hrgn2, -dc->w.DCOrgX, -dc->w.DCOrgY );
SetRectRgn( hrgn, rClip.left, rClip.top,
rClip.right, rClip.bottom );
CombineRgn( hrgn, hrgn, hrgn2, RGN_AND );
OffsetRgn( hrgn2, dx, dy );
CombineRgn( hrgn, hrgn, hrgn2, RGN_DIFF );
if( rcUpdate )
{
GetRgnBox( hrgn, rcUpdate );
/* Put the rcUpdate in logical coordinate */
DPtoLP( hdc, (LPPOINT)rcUpdate, 2 );
}
if (!hrgnUpdate) DeleteObject( hrgn );
DeleteObject( hrgn2 );
}
}
else
{
if (hrgnUpdate) SetRectRgn(hrgnUpdate, 0, 0, 0, 0);
if (rcUpdate) SetRectEmpty(rcUpdate);
}
GDI_HEAP_UNLOCK( hdc );
return TRUE;
}
/*************************************************************************
* ScrollWindowEx16 (USER.319)
*/
INT16 WINAPI ScrollWindowEx16( HWND16 hwnd, INT16 dx, INT16 dy,
const RECT16 *rect, const RECT16 *clipRect,
HRGN16 hrgnUpdate, LPRECT16 rcUpdate,
UINT16 flags )
{
RECT rect32, clipRect32, rcUpdate32;
BOOL16 ret;
if (rect) CONV_RECT16TO32( rect, &rect32 );
if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 );
ret = ScrollWindowEx( hwnd, dx, dy, rect ? &rect32 : NULL,
clipRect ? &clipRect32 : NULL, hrgnUpdate,
(rcUpdate) ? &rcUpdate32 : NULL, flags );
if (rcUpdate) CONV_RECT32TO16( &rcUpdate32, rcUpdate );
return ret;
}
/*************************************************************************
* SCROLL_FixCaret
*/
static BOOL SCROLL_FixCaret(HWND hWnd, LPRECT lprc, UINT flags)
{
HWND hCaret = CARET_GetHwnd();
if( hCaret )
{
RECT rc;
CARET_GetRect( &rc );
if( hCaret == hWnd ||
(flags & SW_SCROLLCHILDREN && IsChild(hWnd, hCaret)) )
{
POINT pt;
pt.x = rc.left; pt.y = rc.top;
MapWindowPoints( hCaret, hWnd, (LPPOINT)&rc, 2 );
if( IntersectRect(lprc, lprc, &rc) )
{
HideCaret(0);
lprc->left = pt.x; lprc->top = pt.y;
return TRUE;
}
}
}
return FALSE;
}
/*************************************************************************
* ScrollWindowEx32 (USER32.451)
*
* NOTE: Use this function instead of ScrollWindow32
*/
INT WINAPI ScrollWindowEx( HWND hwnd, INT dx, INT dy,
const RECT *rect, const RECT *clipRect,
HRGN hrgnUpdate, LPRECT rcUpdate,
UINT flags )
{
INT retVal = NULLREGION;
BOOL bCaret = FALSE, bOwnRgn = TRUE;
RECT rc, cliprc;
WND* wnd = WIN_FindWndPtr( hwnd );
if( !wnd || !WIN_IsWindowDrawable( wnd, TRUE ))
{
retVal = ERROR;
goto END;
}
GetClientRect(hwnd, &rc);
if (rect) IntersectRect(&rc, &rc, rect);
if (clipRect) IntersectRect(&cliprc,&rc,clipRect);
else cliprc = rc;
if (!IsRectEmpty(&cliprc) && (dx || dy))
{
DC* dc;
HDC hDC;
BOOL bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE));
HRGN hrgnClip = CreateRectRgnIndirect(&cliprc);
HRGN hrgnTemp = CreateRectRgnIndirect(&rc);
RECT caretrc;
TRACE("%04x, %d,%d hrgnUpdate=%04x rcUpdate = %p \
cliprc = (%d,%d-%d,%d), rc=(%d,%d-%d,%d) %04x\n",
(HWND16)hwnd, dx, dy, hrgnUpdate, rcUpdate,
clipRect?clipRect->left:0, clipRect?clipRect->top:0, clipRect?clipRect->right:0, clipRect?clipRect->bottom:0,
rc.left, rc.top, rc.right, rc.bottom, (UINT16)flags );
caretrc = rc;
bCaret = SCROLL_FixCaret(hwnd, &caretrc, flags);
if( hrgnUpdate ) bOwnRgn = FALSE;
else if( bUpdate ) hrgnUpdate = CreateRectRgn( 0, 0, 0, 0 );
hDC = GetDCEx( hwnd, hrgnClip, DCX_CACHE | DCX_USESTYLE |
DCX_KEEPCLIPRGN | DCX_INTERSECTRGN |
((flags & SW_SCROLLCHILDREN) ? DCX_NOCLIPCHILDREN : 0) );
if( (dc = (DC *)GDI_GetObjPtr(hDC, DC_MAGIC)) )
{
if (dc->w.hVisRgn) {
wnd->pDriver->pSurfaceCopy(wnd,dc,dx,dy,&rc,bUpdate);
if( bUpdate )
{
OffsetRgn( hrgnTemp, dc->w.DCOrgX, dc->w.DCOrgY );
CombineRgn( hrgnTemp, hrgnTemp, dc->w.hVisRgn,
RGN_AND );
OffsetRgn( hrgnTemp, -dc->w.DCOrgX, -dc->w.DCOrgY );
CombineRgn( hrgnUpdate, hrgnTemp, hrgnClip,
RGN_AND );
OffsetRgn( hrgnTemp, dx, dy );
retVal =
CombineRgn( hrgnUpdate, hrgnUpdate, hrgnTemp,
RGN_DIFF );
if( rcUpdate ) GetRgnBox( hrgnUpdate, rcUpdate );
}
}
ReleaseDC(hwnd, hDC);
GDI_HEAP_UNLOCK( hDC );
}
if( wnd->hrgnUpdate > 1 )
{
/* Takes into account the fact that some damages may have
occured during the scroll. */
CombineRgn( hrgnTemp, wnd->hrgnUpdate, 0, RGN_COPY );
OffsetRgn( hrgnTemp, dx, dy );
CombineRgn( hrgnTemp, hrgnTemp, hrgnClip, RGN_AND );
CombineRgn( wnd->hrgnUpdate, wnd->hrgnUpdate, hrgnTemp, RGN_OR );
}
if( flags & SW_SCROLLCHILDREN )
{
RECT r;
WND* w;
for( w =WIN_LockWndPtr(wnd->child); w; WIN_UpdateWndPtr(&w, w->next))
{
CONV_RECT16TO32( &w->rectWindow, &r );
if( IntersectRect(&r, &r, &rc) )
SetWindowPos(w->hwndSelf, 0, w->rectWindow.left + dx,
w->rectWindow.top + dy, 0,0, SWP_NOZORDER |
SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOREDRAW |
SWP_DEFERERASE );
}
}
if( flags & (SW_INVALIDATE | SW_ERASE) )
PAINT_RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_INVALIDATE | RDW_ERASE |
((flags & SW_ERASE) ? RDW_ERASENOW : 0) | ((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : 0 ), 0 );
if( bCaret )
{
SetCaretPos( caretrc.left + dx, caretrc.top + dy );
ShowCaret(0);
}
if( bOwnRgn && hrgnUpdate ) DeleteObject( hrgnUpdate );
DeleteObject( hrgnClip );
DeleteObject( hrgnTemp );
}
END:
WIN_ReleaseWndPtr(wnd);
return retVal;
}
|
