+++ /dev/null
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * PURPOSE: Line functions
- * FILE: win32ss/gdi/eng/lineto.c
- * PROGRAMER: ReactOS Team
- */
-
-#include <win32k.h>
-
-#define NDEBUG
-#include <debug.h>
-
-static void FASTCALL
-TranslateRects(RECT_ENUM *RectEnum, POINTL* Translate)
-{
- RECTL* CurrentRect;
-
- if (0 != Translate->x || 0 != Translate->y)
- {
- for (CurrentRect = RectEnum->arcl; CurrentRect < RectEnum->arcl + RectEnum->c; CurrentRect++)
- {
- CurrentRect->left += Translate->x;
- CurrentRect->right += Translate->x;
- CurrentRect->top += Translate->y;
- CurrentRect->bottom += Translate->y;
- }
- }
-}
-
-LONG
-HandleStyles(
- BRUSHOBJ *pbo,
- POINTL* Translate,
- LONG x,
- LONG y,
- LONG deltax,
- LONG deltay,
- LONG dx,
- LONG dy,
- PULONG piStyle)
-{
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- PULONG pulStyles = pebo->pbrush->pStyle;
- ULONG iStyle, cStyles = pebo->pbrush->dwStyleCount;
- LONG diStyle, offStyle, lStyleMax;
-
- if (cStyles > 0)
- {
- if (deltax > deltay)
- {
- offStyle = (- Translate->x) % pebo->pbrush->ulStyleSize;
- diStyle = dx;
- lStyleMax = x;
- }
- else
- {
- offStyle = (- Translate->y) % pebo->pbrush->ulStyleSize;
- diStyle = dy;
- lStyleMax = y;
- }
-
- /* Now loop until we have found the style index */
- for (iStyle = 0; offStyle >= pulStyles[iStyle]; iStyle++)
- {
- offStyle -= pulStyles[iStyle];
- }
-
- if (diStyle > 0)
- {
- lStyleMax += pulStyles[iStyle] - offStyle;
- }
- else
- {
- lStyleMax -= offStyle + 1;
- }
- }
- else
- {
- iStyle = 0;
- lStyleMax = MAX_COORD;
- }
-
- *piStyle = iStyle;
- return lStyleMax;
-}
-
-/*
- * Draw a line from top-left to bottom-right
- */
-void FASTCALL
-NWtoSE(SURFOBJ* OutputObj, CLIPOBJ* Clip,
- BRUSHOBJ* pbo, LONG x, LONG y, LONG deltax, LONG deltay,
- POINTL* Translate)
-{
- int i;
- int error;
- BOOLEAN EnumMore;
- RECTL* ClipRect;
- RECT_ENUM RectEnum;
- ULONG Pixel = pbo->iSolidColor;
- LONG delta;
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- PULONG pulStyles = pebo->pbrush->pStyle;
- ULONG iStyle, cStyles = pebo->pbrush->dwStyleCount;
- LONG lStyleMax;
-
- lStyleMax = HandleStyles(pbo, Translate, x, y, deltax, deltay, 1, 1, &iStyle);
-
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- delta = max(deltax, deltay);
- i = 0;
- error = delta >> 1;
- while (i < delta && (ClipRect < RectEnum.arcl + RectEnum.c || EnumMore))
- {
- while ((ClipRect < RectEnum.arcl + RectEnum.c /* there's still a current clip rect */
- && (ClipRect->bottom <= y /* but it's above us */
- || (ClipRect->top <= y && ClipRect->right <= x))) /* or to the left of us */
- || EnumMore) /* no current clip rect, but rects left */
- {
- /* Skip to the next clip rect */
- if (RectEnum.arcl + RectEnum.c <= ClipRect)
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- }
- else
- {
- ClipRect++;
- }
- }
- if (ClipRect < RectEnum.arcl + RectEnum.c) /* If there's no current clip rect we're done */
- {
- if ((ClipRect->left <= x && ClipRect->top <= y) && ((iStyle & 1) == 0))
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_PutPixel(
- OutputObj, x, y, Pixel);
- }
- if (deltax < deltay)
- {
- y++;
- if (y == lStyleMax)
- {
- iStyle = (iStyle + 1) % cStyles;
- lStyleMax = y + pulStyles[iStyle];
- }
- error = error + deltax;
- if (deltay <= error)
- {
- x++;
- error = error - deltay;
- }
- }
- else
- {
- x++;
- if (x == lStyleMax)
- {
- iStyle = (iStyle + 1) % cStyles;
- lStyleMax = x + pulStyles[iStyle];
- }
- error = error + deltay;
- if (deltax <= error)
- {
- y++;
- error = error - deltax;
- }
- }
- i++;
- }
- }
-}
-
-void FASTCALL
-SWtoNE(SURFOBJ* OutputObj, CLIPOBJ* Clip,
- BRUSHOBJ* pbo, LONG x, LONG y, LONG deltax, LONG deltay,
- POINTL* Translate)
-{
- int i;
- int error;
- BOOLEAN EnumMore;
- RECTL* ClipRect;
- RECT_ENUM RectEnum;
- ULONG Pixel = pbo->iSolidColor;
- LONG delta;
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- PULONG pulStyles = pebo->pbrush->pStyle;
- ULONG iStyle, cStyles = pebo->pbrush->dwStyleCount;
- LONG lStyleMax;
-
- lStyleMax = HandleStyles(pbo, Translate, x, y, deltax, deltay, 1, -1, &iStyle);
-
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_RIGHTUP, 0);
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- delta = max(deltax, deltay);
- i = 0;
- error = delta >> 1;
- while (i < delta && (ClipRect < RectEnum.arcl + RectEnum.c || EnumMore))
- {
- while ((ClipRect < RectEnum.arcl + RectEnum.c
- && (y < ClipRect->top
- || (y < ClipRect->bottom && ClipRect->right <= x)))
- || EnumMore)
- {
- if (RectEnum.arcl + RectEnum.c <= ClipRect)
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- }
- else
- {
- ClipRect++;
- }
- }
- if (ClipRect < RectEnum.arcl + RectEnum.c)
- {
- if ((ClipRect->left <= x && y < ClipRect->bottom) && ((iStyle & 1) == 0))
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_PutPixel(
- OutputObj, x, y, Pixel);
- }
- if (deltax < deltay)
- {
- y--;
- if (y == lStyleMax)
- {
- iStyle = (iStyle - 1) % cStyles;
- lStyleMax = y - pulStyles[iStyle];
- }
- error = error + deltax;
- if (deltay <= error)
- {
- x++;
- error = error - deltay;
- }
- }
- else
- {
- x++;
- if (x == lStyleMax)
- {
- iStyle = (iStyle + 1) % cStyles;
- lStyleMax = x + pulStyles[iStyle];
- }
- error = error + deltay;
- if (deltax <= error)
- {
- y--;
- error = error - deltax;
- }
- }
- i++;
- }
- }
-}
-
-void FASTCALL
-NEtoSW(SURFOBJ* OutputObj, CLIPOBJ* Clip,
- BRUSHOBJ* pbo, LONG x, LONG y, LONG deltax, LONG deltay,
- POINTL* Translate)
-{
- int i;
- int error;
- BOOLEAN EnumMore;
- RECTL* ClipRect;
- RECT_ENUM RectEnum;
- ULONG Pixel = pbo->iSolidColor;
- LONG delta;
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- PULONG pulStyles = pebo->pbrush->pStyle;
- ULONG iStyle, cStyles = pebo->pbrush->dwStyleCount;
- LONG lStyleMax;
-
- lStyleMax = HandleStyles(pbo, Translate, x, y, deltax, deltay, -1, 1, &iStyle);
-
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_LEFTDOWN, 0);
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- delta = max(deltax, deltay);
- i = 0;
- error = delta >> 1;
- while (i < delta && (ClipRect < RectEnum.arcl + RectEnum.c || EnumMore))
- {
- while ((ClipRect < RectEnum.arcl + RectEnum.c
- && (ClipRect->bottom <= y
- || (ClipRect->top <= y && x < ClipRect->left)))
- || EnumMore)
- {
- if (RectEnum.arcl + RectEnum.c <= ClipRect)
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- }
- else
- {
- ClipRect++;
- }
- }
- if (ClipRect < RectEnum.arcl + RectEnum.c)
- {
- if ((x < ClipRect->right && ClipRect->top <= y) && ((iStyle & 1) == 0))
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_PutPixel(
- OutputObj, x, y, Pixel);
- }
- if (deltax < deltay)
- {
- y++;
- if (y == lStyleMax)
- {
- iStyle = (iStyle + 1) % cStyles;
- lStyleMax = y + pulStyles[iStyle];
- }
- error = error + deltax;
- if (deltay <= error)
- {
- x--;
- error = error - deltay;
- }
- }
- else
- {
- x--;
- if (x == lStyleMax)
- {
- iStyle = (iStyle - 1) % cStyles;
- lStyleMax = x - pulStyles[iStyle];
- }
- error = error + deltay;
- if (deltax <= error)
- {
- y++;
- error = error - deltax;
- }
- }
- i++;
- }
- }
-}
-
-void FASTCALL
-SEtoNW(SURFOBJ* OutputObj, CLIPOBJ* Clip,
- BRUSHOBJ* pbo, LONG x, LONG y, LONG deltax, LONG deltay,
- POINTL* Translate)
-{
- int i;
- int error;
- BOOLEAN EnumMore;
- RECTL* ClipRect;
- RECT_ENUM RectEnum;
- ULONG Pixel = pbo->iSolidColor;
- LONG delta;
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- PULONG pulStyles = pebo->pbrush->pStyle;
- ULONG iStyle, cStyles = pebo->pbrush->dwStyleCount;
- LONG lStyleMax;
-
- lStyleMax = HandleStyles(pbo, Translate, x, y, deltax, deltay, -1, -1, &iStyle);
-
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_LEFTUP, 0);
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- delta = max(deltax, deltay);
- i = 0;
- error = delta >> 1;
- while (i < delta && (ClipRect < RectEnum.arcl + RectEnum.c || EnumMore))
- {
- while ((ClipRect < RectEnum.arcl + RectEnum.c
- && (y < ClipRect->top
- || (y < ClipRect->bottom && x < ClipRect->left)))
- || EnumMore)
- {
- if (RectEnum.arcl + RectEnum.c <= ClipRect)
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- TranslateRects(&RectEnum, Translate);
- ClipRect = RectEnum.arcl;
- }
- else
- {
- ClipRect++;
- }
- }
- if (ClipRect < RectEnum.arcl + RectEnum.c)
- {
- if ((x < ClipRect->right && y < ClipRect->bottom) && ((iStyle & 1) == 0))
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_PutPixel(
- OutputObj, x, y, Pixel);
- }
- if (deltax < deltay)
- {
- y--;
- if (y == lStyleMax)
- {
- iStyle = (iStyle - 1) % cStyles;
- lStyleMax = y - pulStyles[iStyle];
- }
- error = error + deltax;
- if (deltay <= error)
- {
- x--;
- error = error - deltay;
- }
- }
- else
- {
- x--;
- if (x == lStyleMax)
- {
- iStyle = (iStyle - 1) % cStyles;
- lStyleMax = x - pulStyles[iStyle];
- }
- error = error + deltay;
- if (deltax <= error)
- {
- y--;
- error = error - deltax;
- }
- }
- i++;
- }
- }
-}
-
-/*
- * @implemented
- */
-BOOL APIENTRY
-EngLineTo(
- _Inout_ SURFOBJ *DestObj,
- _In_ CLIPOBJ *Clip,
- _In_ BRUSHOBJ *pbo,
- _In_ LONG x1,
- _In_ LONG y1,
- _In_ LONG x2,
- _In_ LONG y2,
- _In_opt_ RECTL *RectBounds,
- _In_ MIX mix)
-{
- LONG x, y, deltax, deltay, xchange, ychange, hx, vy;
- ULONG i;
- ULONG Pixel = pbo->iSolidColor;
- SURFOBJ *OutputObj;
- RECTL DestRect;
- POINTL Translate;
- INTENG_ENTER_LEAVE EnterLeave;
- RECT_ENUM RectEnum;
- BOOL EnumMore;
- CLIPOBJ *pcoPriv = NULL;
- PEBRUSHOBJ pebo = (PEBRUSHOBJ)pbo;
- ULONG cStyles = pebo->pbrush->dwStyleCount;
-
- if (x1 < x2)
- {
- DestRect.left = x1;
- DestRect.right = x2;
- }
- else
- {
- DestRect.left = x2;
- DestRect.right = x1 + 1;
- }
- if (y1 < y2)
- {
- DestRect.top = y1;
- DestRect.bottom = y2;
- }
- else
- {
- DestRect.top = y2;
- DestRect.bottom = y1 + 1;
- }
-
- if (! IntEngEnter(&EnterLeave, DestObj, &DestRect, FALSE, &Translate, &OutputObj))
- {
- return FALSE;
- }
-
- if (!Clip)
- {
- Clip = pcoPriv = EngCreateClip();
- if (!Clip)
- {
- return FALSE;
- }
- IntEngUpdateClipRegion((XCLIPOBJ*)Clip, 0, 0, RectBounds);
- }
-
- x1 += Translate.x;
- x2 += Translate.x;
- y1 += Translate.y;
- y2 += Translate.y;
-
- x = x1;
- y = y1;
- deltax = x2 - x1;
- deltay = y2 - y1;
-
- if (0 == deltax && 0 == deltay)
- {
- return TRUE;
- }
-
- if (deltax < 0)
- {
- xchange = -1;
- deltax = - deltax;
- hx = x2 + 1;
- }
- else
- {
- xchange = 1;
- hx = x1;
- }
-
- if (deltay < 0)
- {
- ychange = -1;
- deltay = - deltay;
- vy = y2 + 1;
- }
- else
- {
- ychange = 1;
- vy = y1;
- }
-
- if ((y1 == y2) && (cStyles == 0))
- {
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
- do
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- for (i = 0; i < RectEnum.c && RectEnum.arcl[i].top + Translate.y <= y1; i++)
- {
- if (y1 < RectEnum.arcl[i].bottom + Translate.y &&
- RectEnum.arcl[i].left + Translate.x <= hx + deltax &&
- hx < RectEnum.arcl[i].right + Translate.x &&
- max(hx, RectEnum.arcl[i].left + Translate.x) <
- min(hx + deltax, RectEnum.arcl[i].right + Translate.x))
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_HLine(
- OutputObj,
- max(hx, RectEnum.arcl[i].left + Translate.x),
- min(hx + deltax, RectEnum.arcl[i].right + Translate.x),
- y1, Pixel);
- }
- }
- }
- while (EnumMore);
- }
- else if ((x1 == x2) && (cStyles == 0))
- {
- CLIPOBJ_cEnumStart(Clip, FALSE, CT_RECTANGLES, CD_RIGHTDOWN, 0);
- do
- {
- EnumMore = CLIPOBJ_bEnum(Clip, (ULONG) sizeof(RectEnum), (PVOID) &RectEnum);
- for (i = 0; i < RectEnum.c; i++)
- {
- if (RectEnum.arcl[i].left + Translate.x <= x1 &&
- x1 < RectEnum.arcl[i].right + Translate.x &&
- RectEnum.arcl[i].top + Translate.y <= vy + deltay &&
- vy < RectEnum.arcl[i].bottom + Translate.y)
- {
- DibFunctionsForBitmapFormat[OutputObj->iBitmapFormat].DIB_VLine(
- OutputObj, x1,
- max(vy, RectEnum.arcl[i].top + Translate.y),
- min(vy + deltay, RectEnum.arcl[i].bottom + Translate.y),
- Pixel);
- }
- }
- }
- while (EnumMore);
- }
- else
- {
- if (0 < xchange)
- {
- if (0 < ychange)
- {
- NWtoSE(OutputObj, Clip, pbo, x, y, deltax, deltay, &Translate);
- }
- else
- {
- SWtoNE(OutputObj, Clip, pbo, x, y, deltax, deltay, &Translate);
- }
- }
- else
- {
- if (0 < ychange)
- {
- NEtoSW(OutputObj, Clip, pbo, x, y, deltax, deltay, &Translate);
- }
- else
- {
- SEtoNW(OutputObj, Clip, pbo, x, y, deltax, deltay, &Translate);
- }
- }
- }
-
- if (pcoPriv)
- {
- EngDeleteClip(pcoPriv);
- }
-
- return IntEngLeave(&EnterLeave);
-}
-
-BOOL APIENTRY
-IntEngLineTo(SURFOBJ *psoDest,
- CLIPOBJ *ClipObj,
- BRUSHOBJ *pbo,
- LONG x1,
- LONG y1,
- LONG x2,
- LONG y2,
- RECTL *RectBounds,
- MIX Mix)
-{
- BOOLEAN ret;
- SURFACE *psurfDest;
- PEBRUSHOBJ GdiBrush;
- RECTL b;
-
- ASSERT(psoDest);
- psurfDest = CONTAINING_RECORD(psoDest, SURFACE, SurfObj);
- ASSERT(psurfDest);
-
- GdiBrush = CONTAINING_RECORD(
- pbo,
- EBRUSHOBJ,
- BrushObject);
- ASSERT(GdiBrush);
- ASSERT(GdiBrush->pbrush);
-
- if (GdiBrush->pbrush->flAttrs & BR_IS_NULL)
- return TRUE;
-
- /* No success yet */
- ret = FALSE;
-
- /* Clip lines totally outside the clip region. This is not done as an
- * optimization (there are very few lines drawn outside the region) but
- * as a workaround for what seems to be a problem in the CL54XX driver */
- if (NULL == ClipObj || DC_TRIVIAL == ClipObj->iDComplexity)
- {
- b.left = 0;
- b.right = psoDest->sizlBitmap.cx;
- b.top = 0;
- b.bottom = psoDest->sizlBitmap.cy;
- }
- else
- {
- b = ClipObj->rclBounds;
- }
- if ((x1 < b.left && x2 < b.left) || (b.right <= x1 && b.right <= x2) ||
- (y1 < b.top && y2 < b.top) || (b.bottom <= y1 && b.bottom <= y2))
- {
- return TRUE;
- }
-
- b.left = min(x1, x2);
- b.right = max(x1, x2);
- b.top = min(y1, y2);
- b.bottom = max(y1, y2);
- if (b.left == b.right) b.right++;
- if (b.top == b.bottom) b.bottom++;
-
- if (psurfDest->flags & HOOK_LINETO)
- {
- /* Call the driver's DrvLineTo */
- ret = GDIDEVFUNCS(psoDest).LineTo(
- psoDest, ClipObj, pbo, x1, y1, x2, y2, &b, Mix);
- }
-
-#if 0
- if (! ret && (psurfDest->flags & HOOK_STROKEPATH))
- {
- /* FIXME: Emulate LineTo using drivers DrvStrokePath and set ret on success */
- }
-#endif
-
- if (! ret)
- {
- ret = EngLineTo(psoDest, ClipObj, pbo, x1, y1, x2, y2, RectBounds, Mix);
- }
-
- return ret;
-}
-
-BOOL APIENTRY
-IntEngPolyline(SURFOBJ *psoDest,
- CLIPOBJ *Clip,
- BRUSHOBJ *pbo,
- CONST LPPOINT pt,
- LONG dCount,
- MIX Mix)
-{
- LONG i;
- RECTL rect;
- BOOL ret = FALSE;
-
- // Draw the Polyline with a call to IntEngLineTo for each segment.
- for (i = 1; i < dCount; i++)
- {
- rect.left = min(pt[i-1].x, pt[i].x);
- rect.top = min(pt[i-1].y, pt[i].y);
- rect.right = max(pt[i-1].x, pt[i].x);
- rect.bottom = max(pt[i-1].y, pt[i].y);
- ret = IntEngLineTo(psoDest,
- Clip,
- pbo,
- pt[i-1].x,
- pt[i-1].y,
- pt[i].x,
- pt[i].y,
- &rect,
- Mix);
- if (!ret)
- {
- break;
- }
- }
-
- return ret;
-}
-
-/* EOF */
projects / reactos.git / blobdiff