| /* |
| * Scroll windows and DCs |
| * |
| * Copyright David W. Metcalfe, 1993 |
| * Alex Korobka 1995,1996 |
| * |
| * |
| */ |
| |
| #include <stdlib.h> |
| #include "windows.h" |
| #include "class.h" |
| #include "dc.h" |
| #include "win.h" |
| #include "gdi.h" |
| #include "dce.h" |
| #include "region.h" |
| #include "graphics.h" |
| #include "sysmetrics.h" |
| #include "debug.h" |
| |
| |
| /************************************************************************* |
| * ScrollWindow16 (USER.61) |
| */ |
| void WINAPI ScrollWindow16(HWND16 hwnd, INT16 dx, INT16 dy, const RECT16 *rect, |
| const RECT16 *clipRect ) |
| { |
| RECT32 rect32, clipRect32; |
| |
| if (rect) CONV_RECT16TO32( rect, &rect32 ); |
| if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 ); |
| ScrollWindow32( hwnd, dx, dy, rect ? &rect32 : NULL, |
| clipRect ? &clipRect32 : NULL ); |
| } |
| |
| /************************************************************************* |
| * ScrollWindow32 (USER32.450) |
| * |
| * FIXME: verify clipping region calculations |
| */ |
| BOOL32 WINAPI ScrollWindow32( HWND32 hwnd, INT32 dx, INT32 dy, |
| const RECT32 *rect, const RECT32 *clipRect ) |
| { |
| HDC32 hdc; |
| HRGN32 hrgnUpdate,hrgnClip; |
| RECT32 rc, cliprc; |
| HWND32 hCaretWnd = CARET_GetHwnd(); |
| WND* wndScroll = WIN_FindWndPtr( hwnd ); |
| |
| TRACE(scroll,"hwnd=%04x, dx=%d, dy=%d, lpRect =%p clipRect=%i,%i,%i,%i\n", |
| hwnd, dx, dy, rect, |
| clipRect ? clipRect->left : 0, |
| clipRect ? clipRect->top : 0, |
| clipRect ? clipRect->right : 0, |
| clipRect ? clipRect->bottom : 0 ); |
| |
| if ( !wndScroll || !WIN_IsWindowDrawable( wndScroll, TRUE ) ) return TRUE; |
| |
| if ( !rect ) /* do not clip children */ |
| { |
| GetClientRect32(hwnd, &rc); |
| hrgnClip = CreateRectRgnIndirect32( &rc ); |
| |
| if ((hCaretWnd == hwnd) || IsChild32(hwnd,hCaretWnd)) |
| HideCaret32(hCaretWnd); |
| else hCaretWnd = 0; |
| |
| hdc = GetDCEx32(hwnd, hrgnClip, DCX_CACHE | DCX_CLIPSIBLINGS); |
| DeleteObject32( hrgnClip ); |
| } |
| else /* clip children */ |
| { |
| CopyRect32(&rc, rect); |
| |
| if (hCaretWnd == hwnd) HideCaret32(hCaretWnd); |
| else hCaretWnd = 0; |
| |
| hdc = GetDCEx32( hwnd, 0, DCX_CACHE | DCX_USESTYLE ); |
| } |
| |
| if (clipRect == NULL) |
| GetClientRect32(hwnd, &cliprc); |
| else |
| CopyRect32(&cliprc, clipRect); |
| |
| hrgnUpdate = CreateRectRgn32( 0, 0, 0, 0 ); |
| ScrollDC32( hdc, dx, dy, &rc, &cliprc, hrgnUpdate, NULL ); |
| ReleaseDC32(hwnd, hdc); |
| |
| if( !rect ) /* move child windows and update region */ |
| { |
| WND* wndPtr; |
| |
| if( wndScroll->hrgnUpdate > 1 ) |
| OffsetRgn32( wndScroll->hrgnUpdate, dx, dy ); |
| |
| for (wndPtr = wndScroll->child; wndPtr; wndPtr = wndPtr->next) |
| SetWindowPos32(wndPtr->hwndSelf, 0, wndPtr->rectWindow.left + dx, |
| wndPtr->rectWindow.top + dy, 0,0, SWP_NOZORDER | |
| SWP_NOSIZE | SWP_NOACTIVATE | SWP_NOREDRAW | |
| SWP_DEFERERASE ); |
| } |
| |
| PAINT_RedrawWindow( hwnd, NULL, hrgnUpdate, RDW_ALLCHILDREN | |
| RDW_INVALIDATE | RDW_ERASE | RDW_ERASENOW, RDW_C_USEHRGN ); |
| |
| DeleteObject32( hrgnUpdate ); |
| if( hCaretWnd ) |
| { |
| POINT32 pt; |
| GetCaretPos32(&pt); |
| pt.x += dx; pt.y += dy; |
| SetCaretPos32(pt.x, pt.y); |
| ShowCaret32(hCaretWnd); |
| } |
| return TRUE; |
| } |
| |
| |
| /************************************************************************* |
| * ScrollDC16 (USER.221) |
| */ |
| BOOL16 WINAPI ScrollDC16( HDC16 hdc, INT16 dx, INT16 dy, const RECT16 *rect, |
| const RECT16 *cliprc, HRGN16 hrgnUpdate, |
| LPRECT16 rcUpdate ) |
| { |
| RECT32 rect32, clipRect32, rcUpdate32; |
| BOOL16 ret; |
| |
| if (rect) CONV_RECT16TO32( rect, &rect32 ); |
| if (cliprc) CONV_RECT16TO32( cliprc, &clipRect32 ); |
| ret = ScrollDC32( hdc, dx, dy, rect ? &rect32 : NULL, |
| cliprc ? &clipRect32 : NULL, hrgnUpdate, &rcUpdate32 ); |
| if (rcUpdate) CONV_RECT32TO16( &rcUpdate32, rcUpdate ); |
| return ret; |
| } |
| |
| |
| /************************************************************************* |
| * ScrollDC32 (USER32.449) |
| * |
| * Both 'rc' and 'prLClip' are in logical units but update info is |
| * returned in device coordinates. |
| */ |
| BOOL32 WINAPI ScrollDC32( HDC32 hdc, INT32 dx, INT32 dy, const RECT32 *rc, |
| const RECT32 *prLClip, HRGN32 hrgnUpdate, |
| LPRECT32 rcUpdate ) |
| { |
| RECT32 rClip; |
| POINT32 src, dest; |
| INT32 ldx, ldy; |
| DC *dc = (DC *)GDI_GetObjPtr(hdc, DC_MAGIC); |
| |
| TRACE(scroll,"%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 ) |
| rClip = *rc; |
| else /* maybe we should just return FALSE? */ |
| GetClipBox32( hdc, &rClip ); |
| |
| if (prLClip) |
| IntersectRect32(&rClip,&rClip,prLClip); |
| |
| if( rClip.left >= rClip.right || rClip.top >= rClip.bottom ) |
| { |
| GDI_HEAP_UNLOCK( hdc ); |
| return FALSE; |
| } |
| |
| SaveVisRgn( hdc ); |
| IntersectVisRect( hdc, rClip.left, rClip.top, |
| rClip.right, rClip.bottom ); |
| |
| |
| /* translate coordinates */ |
| |
| ldx = dx * dc->wndExtX / dc->vportExtX; |
| ldy = dy * dc->wndExtY / dc->vportExtY; |
| |
| if (dx > 0) |
| dest.x = (src.x = rClip.left) + ldx; |
| else |
| src.x = (dest.x = rClip.left) - ldx; |
| |
| if (dy > 0) |
| dest.y = (src.y = rClip.top) + ldy; |
| else |
| src.y = (dest.y = rClip.top) - ldy; |
| |
| /* copy bits */ |
| |
| if( rClip.right - rClip.left > ldx && |
| rClip.bottom - rClip.top > ldy ) |
| { |
| ldx = rClip.right - rClip.left - ldx; |
| ldy = rClip.bottom - rClip.top - ldy; |
| |
| if (!BitBlt32( hdc, dest.x, dest.y, ldx, ldy, |
| hdc, src.x, src.y, SRCCOPY)) |
| { |
| GDI_HEAP_UNLOCK( hdc ); |
| return FALSE; |
| } |
| } |
| |
| /* restore clipping region */ |
| |
| RestoreVisRgn( hdc ); |
| |
| |
| /* compute update areas */ |
| |
| if ( (hrgnUpdate || rcUpdate) && dc->w.hVisRgn ) |
| { |
| HRGN32 hrgn = (hrgnUpdate) ? hrgnUpdate : CreateRectRgn32( 0,0,0,0 ); |
| HRGN32 hrgnClip; |
| |
| LPtoDP32( hdc, (LPPOINT32)&rClip, 2 ); |
| OffsetRect32( &rClip, dc->w.DCOrgX, dc->w.DCOrgY ); |
| hrgnClip = CreateRectRgnIndirect32( &rClip ); |
| |
| CombineRgn32( hrgn, dc->w.hVisRgn, hrgnClip, RGN_AND ); |
| OffsetRgn32( hrgn, dx, dy ); |
| CombineRgn32( hrgn, dc->w.hVisRgn, hrgn, RGN_DIFF ); |
| CombineRgn32( hrgn, hrgn, hrgnClip, RGN_AND ); |
| OffsetRgn32( hrgn, -dc->w.DCOrgX, -dc->w.DCOrgY ); |
| |
| if( rcUpdate ) GetRgnBox32( hrgnUpdate, rcUpdate ); |
| |
| if (!hrgnUpdate) DeleteObject32( hrgn ); |
| DeleteObject32( hrgnClip ); |
| } |
| |
| 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 ) |
| { |
| RECT32 rect32, clipRect32, rcUpdate32; |
| BOOL16 ret; |
| |
| if (rect) CONV_RECT16TO32( rect, &rect32 ); |
| if (clipRect) CONV_RECT16TO32( clipRect, &clipRect32 ); |
| ret = ScrollWindowEx32( 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 BOOL32 SCROLL_FixCaret(HWND32 hWnd, LPRECT32 lprc, UINT32 flags) |
| { |
| HWND32 hCaret = CARET_GetHwnd(); |
| |
| if( hCaret ) |
| { |
| RECT32 rc; |
| CARET_GetRect( &rc ); |
| if( hCaret == hWnd || |
| (flags & SW_SCROLLCHILDREN && IsChild32(hWnd, hCaret)) ) |
| { |
| POINT32 pt; |
| |
| pt.x = rc.left; pt.y = rc.top; |
| MapWindowPoints32( hCaret, hWnd, (LPPOINT32)&rc, 2 ); |
| if( IntersectRect32(lprc, lprc, &rc) ) |
| { |
| HideCaret32(0); |
| lprc->left = pt.x; lprc->top = pt.y; |
| return TRUE; |
| } |
| } |
| } |
| return FALSE; |
| } |
| |
| /************************************************************************* |
| * ScrollWindowEx32 (USER32.451) |
| * |
| * NOTE: Use this function instead of ScrollWindow32 |
| */ |
| INT32 WINAPI ScrollWindowEx32( HWND32 hwnd, INT32 dx, INT32 dy, |
| const RECT32 *rect, const RECT32 *clipRect, |
| HRGN32 hrgnUpdate, LPRECT32 rcUpdate, |
| UINT32 flags ) |
| { |
| INT32 retVal = NULLREGION; |
| BOOL32 bCaret = FALSE, bOwnRgn = TRUE; |
| RECT32 rc, cliprc; |
| WND* wnd = WIN_FindWndPtr( hwnd ); |
| |
| if( !wnd || !WIN_IsWindowDrawable( wnd, TRUE )) return ERROR; |
| |
| if (rect == NULL) GetClientRect32(hwnd, &rc); |
| else rc = *rect; |
| |
| if (clipRect) IntersectRect32(&cliprc,&rc,clipRect); |
| else cliprc = rc; |
| |
| if (!IsRectEmpty32(&cliprc) && (dx || dy)) |
| { |
| DC* dc; |
| HDC32 hDC; |
| BOOL32 bUpdate = (rcUpdate || hrgnUpdate || flags & (SW_INVALIDATE | SW_ERASE)); |
| HRGN32 hrgnClip = CreateRectRgnIndirect32(&cliprc); |
| |
| TRACE(scroll,"%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, |
| rect?rect->left:0, rect?rect->top:0, rect ?rect->right:0, rect ?rect->bottom:0, (UINT16)flags ); |
| |
| rc = cliprc; |
| bCaret = SCROLL_FixCaret(hwnd, &rc, flags); |
| |
| if( hrgnUpdate ) bOwnRgn = FALSE; |
| else if( bUpdate ) hrgnUpdate = CreateRectRgn32( 0, 0, 0, 0 ); |
| |
| hDC = GetDCEx32( hwnd, hrgnClip, DCX_CACHE | DCX_USESTYLE | |
| ((flags & SW_SCROLLCHILDREN) ? DCX_NOCLIPCHILDREN : 0) ); |
| if( (dc = (DC *)GDI_GetObjPtr(hDC, DC_MAGIC)) ) |
| { |
| POINT32 dst, src; |
| |
| if( dx > 0 ) dst.x = (src.x = dc->w.DCOrgX + cliprc.left) + dx; |
| else src.x = (dst.x = dc->w.DCOrgX + cliprc.left) - dx; |
| |
| if( dy > 0 ) dst.y = (src.y = dc->w.DCOrgY + cliprc.top) + dy; |
| else src.y = (dst.y = dc->w.DCOrgY + cliprc.top) - dy; |
| |
| if ((cliprc.right - cliprc.left > abs(dx)) && |
| (cliprc.bottom - cliprc.top > abs(dy))) |
| { |
| if (bUpdate) /* handles non-Wine windows hanging over the scrolled area */ |
| TSXSetGraphicsExposures( display, dc->u.x.gc, True ); |
| TSXSetFunction( display, dc->u.x.gc, GXcopy ); |
| TSXCopyArea( display, dc->u.x.drawable, dc->u.x.drawable, dc->u.x.gc, |
| src.x, src.y, cliprc.right - cliprc.left - abs(dx), |
| cliprc.bottom - cliprc.top - abs(dy), dst.x, dst.y ); |
| if (bUpdate) |
| TSXSetGraphicsExposures( display, dc->u.x.gc, False ); |
| } |
| |
| if( dc->w.hVisRgn && bUpdate ) |
| { |
| OffsetRgn32( hrgnClip, dc->w.DCOrgX, dc->w.DCOrgY ); |
| CombineRgn32( hrgnUpdate, dc->w.hVisRgn, hrgnClip, RGN_AND ); |
| OffsetRgn32( hrgnUpdate, dx, dy ); |
| CombineRgn32( hrgnUpdate, dc->w.hVisRgn, hrgnUpdate, RGN_DIFF ); |
| CombineRgn32( hrgnUpdate, hrgnUpdate, hrgnClip, RGN_AND ); |
| OffsetRgn32( hrgnUpdate, -dc->w.DCOrgX, -dc->w.DCOrgY ); |
| |
| if( rcUpdate ) GetRgnBox32( hrgnUpdate, rcUpdate ); |
| } |
| ReleaseDC32(hwnd, hDC); |
| GDI_HEAP_UNLOCK( hDC ); |
| } |
| |
| if( wnd->hrgnUpdate > 1 ) |
| { |
| if( rect || clipRect ) |
| { |
| if( (CombineRgn32( hrgnClip, hrgnClip, |
| wnd->hrgnUpdate, RGN_AND ) != NULLREGION) ) |
| { |
| CombineRgn32( wnd->hrgnUpdate, wnd->hrgnUpdate, hrgnClip, RGN_DIFF ); |
| OffsetRgn32( hrgnClip, dx, dy ); |
| CombineRgn32( wnd->hrgnUpdate, wnd->hrgnUpdate, hrgnClip, RGN_OR ); |
| } |
| } |
| else |
| OffsetRgn32( wnd->hrgnUpdate, dx, dy ); |
| } |
| |
| if( flags & SW_SCROLLCHILDREN ) |
| { |
| RECT32 r; |
| WND* w; |
| for( w = wnd->child; w; w = w->next ) |
| { |
| CONV_RECT16TO32( &w->rectWindow, &r ); |
| if( !clipRect || IntersectRect32(&r, &r, &cliprc) ) |
| SetWindowPos32(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 ) |
| { |
| SetCaretPos32( rc.left + dx, rc.top + dy ); |
| ShowCaret32(0); |
| } |
| |
| if( bOwnRgn && hrgnUpdate ) DeleteObject32( hrgnUpdate ); |
| DeleteObject32( hrgnClip ); |
| } |
| return retVal; |
| } |
| |
