ASSERT parameter assumptions
[reactos.git] / reactos / subsys / win32k / eng / paint.c
1 /*
2 * ReactOS W32 Subsystem
3 * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19 /* $Id: paint.c,v 1.21 2004/12/14 04:55:43 royce Exp $
20 *
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * PURPOSE: GDI Driver Paint Functions
24 * FILE: subsys/win32k/eng/paint.c
25 * PROGRAMER: Jason Filby
26 * REVISION HISTORY:
27 * 3/7/1999: Created
28 */
29
30 #include <w32k.h>
31
32 BOOL STDCALL FillSolid(SURFOBJ *Surface, PRECTL pRect, ULONG iColor)
33 {
34 LONG y;
35 ULONG LineWidth;
36
37 ASSERT ( Surface );
38 ASSERT ( pRect );
39 MouseSafetyOnDrawStart(Surface, pRect->left, pRect->top, pRect->right, pRect->bottom);
40 LineWidth = pRect->right - pRect->left;
41 DPRINT(" LineWidth: %d, top: %d, bottom: %d\n", LineWidth, pRect->top, pRect->bottom);
42 for (y = pRect->top; y < pRect->bottom; y++)
43 {
44 DibFunctionsForBitmapFormat[Surface->iBitmapFormat].DIB_HLine(
45 Surface, pRect->left, pRect->right, y, iColor);
46 }
47 MouseSafetyOnDrawEnd(Surface);
48
49 return TRUE;
50 }
51
52 BOOL STDCALL
53 EngPaintRgn(SURFOBJ *Surface, CLIPOBJ *ClipRegion, ULONG iColor, MIX Mix,
54 BRUSHOBJ *BrushObj, POINTL *BrushPoint)
55 {
56 RECT_ENUM RectEnum;
57 BOOL EnumMore;
58 ULONG i;
59
60 ASSERT(Surface);
61 ASSERT(ClipRegion);
62
63 DPRINT("ClipRegion->iMode:%d, ClipRegion->iDComplexity: %d\n Color: %d", ClipRegion->iMode, ClipRegion->iDComplexity, iColor);
64 switch(ClipRegion->iMode) {
65
66 case TC_RECTANGLES:
67
68 /* Rectangular clipping can be handled without enumeration.
69 Note that trivial clipping is not possible, since the clipping
70 region defines the area to fill */
71
72 if (ClipRegion->iDComplexity == DC_RECT)
73 {
74 FillSolid(Surface, &(ClipRegion->rclBounds), iColor);
75 } else {
76
77 /* Enumerate all the rectangles and draw them */
78 CLIPOBJ_cEnumStart(ClipRegion, FALSE, CT_RECTANGLES, CD_ANY, 0);
79
80 do {
81 EnumMore = CLIPOBJ_bEnum(ClipRegion, sizeof(RectEnum), (PVOID) &RectEnum);
82 for (i = 0; i < RectEnum.c; i++) {
83 FillSolid(Surface, RectEnum.arcl + i, iColor);
84 }
85 } while (EnumMore);
86 }
87
88 return(TRUE);
89
90 default:
91 return(FALSE);
92 }
93 }
94
95 /*
96 * @unimplemented
97 */
98 BOOL STDCALL
99 EngPaint(IN SURFOBJ *Surface,
100 IN CLIPOBJ *ClipRegion,
101 IN BRUSHOBJ *Brush,
102 IN POINTL *BrushOrigin,
103 IN MIX Mix)
104 {
105 BOOLEAN ret;
106
107 // FIXME: We only support a brush's solid color attribute
108 ret = EngPaintRgn(Surface, ClipRegion, Brush->iSolidColor, Mix, Brush, BrushOrigin);
109
110 return ret;
111 }
112
113 BOOL STDCALL
114 IntEngPaint(IN BITMAPOBJ *BitmapObj,
115 IN CLIPOBJ *ClipRegion,
116 IN BRUSHOBJ *Brush,
117 IN POINTL *BrushOrigin,
118 IN MIX Mix)
119 {
120 SURFOBJ *Surface = &BitmapObj->SurfObj;
121 BOOL ret;
122
123 DPRINT("SurfGDI type: %d\n", Surface->iType);
124 /* Is the surface's Paint function hooked? */
125 if((Surface->iType!=STYPE_BITMAP) && (BitmapObj->flHooks & HOOK_PAINT))
126 {
127 // Call the driver's DrvPaint
128 MouseSafetyOnDrawStart(Surface, ClipRegion->rclBounds.left,
129 ClipRegion->rclBounds.top, ClipRegion->rclBounds.right,
130 ClipRegion->rclBounds.bottom);
131
132 ret = GDIDEVFUNCS(Surface).Paint(
133 Surface, ClipRegion, Brush, BrushOrigin, Mix);
134 MouseSafetyOnDrawEnd(Surface);
135 return ret;
136 }
137 return EngPaint( Surface, ClipRegion, Brush, BrushOrigin, Mix );
138
139 }
140 /* EOF */