Module: wine Branch: master Commit: f56fa321f53e70825b00fc5eeaf71d4e2de4ea95 URL: http://source.winehq.org/git/wine.git/?a=commit;h=f56fa321f53e70825b00fc5eea...
Author: Evan Stade estade@gmail.com Date: Fri Jul 20 17:50:07 2007 -0700
gdiplus: Use base inset for custom line caps.
---
dlls/gdiplus/graphics.c | 46 ++++++++++++++++++++++++++++++++++++++-------- 1 files changed, 38 insertions(+), 8 deletions(-)
diff --git a/dlls/gdiplus/graphics.c b/dlls/gdiplus/graphics.c index a7383ab..0418451 100644 --- a/dlls/gdiplus/graphics.c +++ b/dlls/gdiplus/graphics.c @@ -317,7 +317,8 @@ custend: }
/* Shortens the line by the given percent by changing x2, y2. - * If percent is > 1.0 then the line will change direction. */ + * If percent is > 1.0 then the line will change direction. + * If percent is negative it can lengthen the line. */ static void shorten_line_percent(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL percent) { REAL dist, theta, dx, dy; @@ -325,17 +326,18 @@ static void shorten_line_percent(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL per if((y1 == *y2) && (x1 == *x2)) return;
- dist = sqrt((*x2 - x1) * (*x2 - x1) + (*y2 - y1) * (*y2 - y1)) * percent; - theta = (*x2 == x1 ? M_PI_2 : atan((*y2 - y1) / (*x2 - x1))); + dist = sqrt((*x2 - x1) * (*x2 - x1) + (*y2 - y1) * (*y2 - y1)) * -percent; + theta = (*x2 == x1 ? M_PI_2 : atan2((*y2 - y1), (*x2 - x1))); dx = cos(theta) * dist; dy = sin(theta) * dist;
- *x2 = *x2 + fabs(dx) * (*x2 > x1 ? -1.0 : 1.0); - *y2 = *y2 + fabs(dy) * (*y2 > y1 ? -1.0 : 1.0); + *x2 = *x2 + dx; + *y2 = *y2 + dy; }
/* Shortens the line by the given amount by changing x2, y2. - * If the amount is greater than the distance, the line will become length 0. */ + * If the amount is greater than the distance, the line will become length 0. + * If the amount is negative, it can lengthen the line. */ static void shorten_line_amt(REAL x1, REAL y1, REAL *x2, REAL *y2, REAL amt) { REAL dx, dy, percent; @@ -378,6 +380,9 @@ static GpStatus draw_polyline(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt, if(caps){ if(pen->endcap == LineCapArrowAnchor) shorten_line_amt(pt[count-2].X, pt[count-2].Y, &x, &y, pen->width); + else if((pen->endcap == LineCapCustom) && pen->customend) + shorten_line_amt(pt[count-2].X, pt[count-2].Y, &x, &y, + pen->customend->inset * pen->width);
draw_cap(hdc, pen->color, pen->endcap, pen->width, pen->customend, pt[count-2].X, pt[count-2].Y, pt[count - 1].X, pt[count - 1].Y); @@ -437,9 +442,10 @@ static void shorten_bezier_amt(GpPointF * pt, REAL amt) static GpStatus draw_polybezier(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt, INT count, BOOL caps) { - POINT *pti; + POINT *pti, curpos; GpPointF *ptf; INT i; + REAL x, y; GpStatus status = GenericError;
if(!count) @@ -458,6 +464,18 @@ static GpStatus draw_polybezier(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt, if(caps){ if(pen->endcap == LineCapArrowAnchor) shorten_bezier_amt(ptf, pen->width); + /* FIXME The following is seemingly correct only for baseinset < 0 or + * baseinset > ~3. With smaller baseinsets, windows actually + * lengthens the bezier line instead of shortening it. */ + else if((pen->endcap == LineCapCustom) && pen->customend){ + x = pt[count - 1].X; + y = pt[count - 1].Y; + shorten_line_amt(pt[count - 2].X, pt[count - 2].Y, &x, &y, + pen->width * pen->customend->inset); + MoveToEx(hdc, roundr(pt[count - 1].X), roundr(pt[count - 1].Y), &curpos); + LineTo(hdc, roundr(x), roundr(y)); + MoveToEx(hdc, curpos.x, curpos.y, NULL); + }
/* the direction of the line cap is parallel to the direction at the * end of the bezier (which, if it has been shortened, is not the same @@ -492,7 +510,7 @@ end: static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt, GDIPCONST BYTE * types, INT count, BOOL caps) { - POINT *pti = GdipAlloc(count * sizeof(POINT)); + POINT *pti = GdipAlloc(count * sizeof(POINT)), curpos; BYTE *tp = GdipAlloc(count); GpPointF *ptf = NULL; REAL x = pt[count - 1].X, y = pt[count - 1].Y; @@ -538,6 +556,15 @@ static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt,
if(pen->endcap == LineCapArrowAnchor) shorten_bezier_amt(ptf, pen->width); + else if((pen->endcap == LineCapCustom) && pen->customend){ + x = pt[count - 1].X; + y = pt[count - 1].Y; + shorten_line_amt(pt[count - 2].X, pt[count - 2].Y, &x, &y, + pen->width * pen->customend->inset); + MoveToEx(hdc, roundr(pt[count - 1].X), roundr(pt[count - 1].Y), &curpos); + LineTo(hdc, roundr(x), roundr(y)); + MoveToEx(hdc, curpos.x, curpos.y, NULL); + }
draw_cap(hdc, pen->color, pen->endcap, pen->width, pen->customend, pt[count - 1].X - (ptf[3].X - ptf[2].X), @@ -555,6 +582,9 @@ static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt, if(pen->endcap == LineCapArrowAnchor) shorten_line_amt(pt[count - 2].X, pt[count - 2].Y, &x, &y, pen->width); + else if((pen->endcap == LineCapCustom) && pen->customend) + shorten_line_amt(pt[count - 2].X, pt[count - 2].Y, &x, &y, + pen->customend->inset * pen->width);
draw_cap(hdc, pen->color, pen->endcap, pen->width, pen->customend, pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X,
-
Alexandre Julliard