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gdiplus: Added rendering of custom line caps.

This commit is contained in:
Evan Stade 2007-07-19 18:22:51 -07:00 committed by Alexandre Julliard
parent ea5898c067
commit 85b5df42a7
1 changed files with 83 additions and 37 deletions
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120
dlls/gdiplus/graphics.c
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@ -46,6 +46,32 @@ static void deg2xy(REAL angle, REAL x_0, REAL y_0, REAL *x, REAL *y)
*y = y_0 + sin(radAngle) * hypotenuse;
}
/* Converts from gdiplus path point type to gdi path point type. */
static BYTE convert_path_point_type(BYTE type)
{
BYTE ret;
switch(type & PathPointTypePathTypeMask){
case PathPointTypeBezier:
ret = PT_BEZIERTO;
break;
case PathPointTypeLine:
ret = PT_LINETO;
break;
case PathPointTypeStart:
ret = PT_MOVETO;
break;
default:
ERR("Bad point type\n");
return 0;
}
if(type & PathPointTypeCloseSubpath)
ret |= PT_CLOSEFIGURE;
return ret;
}
/* GdipDrawPie/GdipFillPie helper function */
static GpStatus draw_pie(GpGraphics *graphics, HBRUSH gdibrush, HPEN gdipen,
REAL x, REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
@ -106,13 +132,18 @@ static void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
/* Draws the linecap the specified color and size on the hdc. The linecap is in
* direction of the line from x1, y1 to x2, y2 and is anchored on x2, y2. */
static void draw_cap(HDC hdc, COLORREF color, GpLineCap cap, REAL size,
REAL x1, REAL y1, REAL x2, REAL y2)
const GpCustomLineCap *custom, REAL x1, REAL y1, REAL x2, REAL y2)
{
HGDIOBJ oldbrush, oldpen;
GpMatrix *matrix = NULL;
HBRUSH brush;
HPEN pen;
POINT pt[4];
PointF *custptf = NULL;
POINT pt[4], *custpt = NULL;
BYTE *tp = NULL;
REAL theta, dsmall, dbig, dx, dy;
INT i, count;
LOGBRUSH lb;
if(x2 != x1)
theta = atan2(y2 - y1, x2 - x1);
@ -123,7 +154,11 @@ static void draw_cap(HDC hdc, COLORREF color, GpLineCap cap, REAL size,
return;
brush = CreateSolidBrush(color);
pen = CreatePen(PS_SOLID, 1, color);
lb.lbStyle = BS_SOLID;
lb.lbColor = color;
lb.lbHatch = 0;
pen = ExtCreatePen(PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT,
(cap == LineCapCustom ? size : 1), &lb, 0, NULL);
oldbrush = SelectObject(hdc, brush);
oldpen = SelectObject(hdc, pen);
@ -229,7 +264,44 @@ static void draw_cap(HDC hdc, COLORREF color, GpLineCap cap, REAL size,
roundr(y2 + 2.0 * dy), pt[0].x, pt[0].y, pt[1].x, pt[1].y);
break;
case LineCapCustom:
FIXME("line cap not implemented\n");
if(!custom)
break;
if(custom->fill){
FIXME("fill-path custom line caps not implemented\n");
break;
}
count = custom->pathdata.Count;
custptf = GdipAlloc(count * sizeof(PointF));
custpt = GdipAlloc(count * sizeof(POINT));
tp = GdipAlloc(count);
if(!custptf || !custpt || !tp || (GdipCreateMatrix(&matrix) != Ok))
goto custend;
memcpy(custptf, custom->pathdata.Points, count * sizeof(PointF));
GdipScaleMatrix(matrix, size, size, MatrixOrderAppend);
GdipRotateMatrix(matrix, (180.0 / M_PI) * (theta - M_PI_2),
MatrixOrderAppend);
GdipTranslateMatrix(matrix, x2, y2, MatrixOrderAppend);
GdipTransformMatrixPoints(matrix, custptf, count);
for(i = 0; i < count; i++){
custpt[i].x = roundr(custptf[i].X);
custpt[i].y = roundr(custptf[i].Y);
tp[i] = convert_path_point_type(custom->pathdata.Types[i]);
}
PolyDraw(hdc, custpt, tp, count);
custend:
GdipFree(custptf);
GdipFree(custpt);
GdipFree(tp);
GdipDeleteMatrix(matrix);
break;
default:
break;
}
@ -303,8 +375,8 @@ static GpStatus draw_polyline(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);
draw_cap(hdc, pen->color, pen->endcap, pen->width, pt[count-2].X,
pt[count-2].Y, pt[count - 1].X, pt[count - 1].Y);
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);
}
for(i = 0; i < count - 1; i ++){
@ -386,7 +458,7 @@ static GpStatus draw_polybezier(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt,
/* 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
* as the direction from pt[count-2] to pt[count-1]) */
draw_cap(hdc, pen->color, pen->endcap, pen->width,
draw_cap(hdc, pen->color, pen->endcap, pen->width, pen->customend,
pt[count - 1].X - (ptf[3].X - ptf[2].X),
pt[count - 1].Y - (ptf[3].Y - ptf[2].Y),
pt[count - 1].X, pt[count - 1].Y);
@ -412,32 +484,6 @@ end:
return status;
}
/* Converts from gdiplus path point type to gdi path point type. */
static BYTE convert_path_point_type(BYTE type)
{
BYTE ret;
switch(type & PathPointTypePathTypeMask){
case PathPointTypeBezier:
ret = PT_BEZIERTO;
break;
case PathPointTypeLine:
ret = PT_LINETO;
break;
case PathPointTypeStart:
ret = PT_MOVETO;
break;
default:
ERR("Bad point type\n");
return 0;
}
if(type & PathPointTypeCloseSubpath)
ret |= PT_CLOSEFIGURE;
return ret;
}
/* Draws a combination of bezier curves and lines between points. */
static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt,
GDIPCONST BYTE * types, INT count, BOOL caps)
@ -489,8 +535,7 @@ static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt,
if(pen->endcap == LineCapArrowAnchor)
shorten_bezier_amt(ptf, pen->width);
draw_cap(hdc, pen->color, pen->endcap, pen->width,
draw_cap(hdc, pen->color, pen->endcap, pen->width, pen->customend,
pt[count - 1].X - (ptf[3].X - ptf[2].X),
pt[count - 1].Y - (ptf[3].Y - ptf[2].Y),
pt[count - 1].X, pt[count - 1].Y);
@ -507,8 +552,9 @@ static GpStatus draw_poly(HDC hdc, GpPen *pen, GDIPCONST GpPointF * pt,
shorten_line_amt(pt[count - 2].X, pt[count - 2].Y, &x, &y,
pen->width);
draw_cap(hdc, pen->color, pen->endcap, pen->width, pt[count - 2].X,
pt[count - 2].Y, pt[count - 1].X, pt[count - 1].Y);
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);
pti[count - 1].x = roundr(x);
pti[count - 1].y = roundr(y);