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wine/dlls/gdiplus/graphics.c

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/*
* Copyright (C) 2007 Google (Evan Stade)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <math.h>
#include <limits.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "wingdi.h"
#include "wine/unicode.h"
#define COBJMACROS
#include "objbase.h"
#include "ocidl.h"
#include "olectl.h"
#include "ole2.h"
#include "winreg.h"
#include "shlwapi.h"
#include "gdiplus.h"
#include "gdiplus_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
/* looks-right constants */
#define TENSION_CONST (0.3)
#define ANCHOR_WIDTH (2.0)
#define MAX_ITERS (50)
/* Converts angle (in degrees) to x/y coordinates */
static void deg2xy(REAL angle, REAL x_0, REAL y_0, REAL *x, REAL *y)
{
REAL radAngle, hypotenuse;
radAngle = deg2rad(angle);
hypotenuse = 50.0; /* arbitrary */
*x = x_0 + cos(radAngle) * hypotenuse;
*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;
}
static INT prepare_dc(GpGraphics *graphics, GpPen *pen)
{
HPEN gdipen;
REAL width;
INT save_state = SaveDC(graphics->hdc), i, numdashes;
GpPointF pt[2];
DWORD dash_array[MAX_DASHLEN];
EndPath(graphics->hdc);
if(pen->unit == UnitPixel){
width = pen->width;
}
else{
/* Get an estimate for the amount the pen width is affected by the world
* transform. (This is similar to what some of the wine drivers do.) */
pt[0].X = 0.0;
pt[0].Y = 0.0;
pt[1].X = 1.0;
pt[1].Y = 1.0;
GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
width = sqrt((pt[1].X - pt[0].X) * (pt[1].X - pt[0].X) +
(pt[1].Y - pt[0].Y) * (pt[1].Y - pt[0].Y)) / sqrt(2.0);
width *= pen->width * convert_unit(graphics->hdc,
pen->unit == UnitWorld ? graphics->unit : pen->unit);
}
if(pen->dash == DashStyleCustom){
numdashes = min(pen->numdashes, MAX_DASHLEN);
TRACE("dashes are: ");
for(i = 0; i < numdashes; i++){
dash_array[i] = roundr(width * pen->dashes[i]);
TRACE("%d, ", dash_array[i]);
}
TRACE("\n and the pen style is %x\n", pen->style);
gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb,
numdashes, dash_array);
}
else
gdipen = ExtCreatePen(pen->style, roundr(width), &pen->brush->lb, 0, NULL);
SelectObject(graphics->hdc, gdipen);
return save_state;
}
static void restore_dc(GpGraphics *graphics, INT state)
{
DeleteObject(SelectObject(graphics->hdc, GetStockObject(NULL_PEN)));
RestoreDC(graphics->hdc, state);
}
/* This helper applies all the changes that the points listed in ptf need in
* order to be drawn on the device context. In the end, this should include at
* least:
* -scaling by page unit
* -applying world transformation
* -converting from float to int
* Native gdiplus uses gdi32 to do all this (via SetMapMode, SetViewportExtEx,
* SetWindowExtEx, SetWorldTransform, etc.) but we cannot because we are using
* gdi to draw, and these functions would irreparably mess with line widths.
*/
static void transform_and_round_points(GpGraphics *graphics, POINT *pti,
GpPointF *ptf, INT count)
{
REAL unitscale;
GpMatrix *matrix;
int i;
unitscale = convert_unit(graphics->hdc, graphics->unit);
/* apply page scale */
if(graphics->unit != UnitDisplay)
unitscale *= graphics->scale;
GdipCloneMatrix(graphics->worldtrans, &matrix);
GdipScaleMatrix(matrix, unitscale, unitscale, MatrixOrderAppend);
GdipTransformMatrixPoints(matrix, ptf, count);
GdipDeleteMatrix(matrix);
for(i = 0; i < count; i++){
pti[i].x = roundr(ptf[i].X);
pti[i].y = roundr(ptf[i].Y);
}
}
/* GdipDrawPie/GdipFillPie helper function */
static void draw_pie(GpGraphics *graphics, REAL x, REAL y, REAL width,
REAL height, REAL startAngle, REAL sweepAngle)
{
GpPointF ptf[4];
POINT pti[4];
ptf[0].X = x;
ptf[0].Y = y;
ptf[1].X = x + width;
ptf[1].Y = y + height;
deg2xy(startAngle+sweepAngle, x + width / 2.0, y + width / 2.0, &ptf[2].X, &ptf[2].Y);
deg2xy(startAngle, x + width / 2.0, y + width / 2.0, &ptf[3].X, &ptf[3].Y);
transform_and_round_points(graphics, pti, ptf, 4);
Pie(graphics->hdc, pti[0].x, pti[0].y, pti[1].x, pti[1].y, pti[2].x,
pti[2].y, pti[3].x, pti[3].y);
}
/* GdipDrawCurve helper function.
* Calculates Bezier points from cardinal spline points. */
static void calc_curve_bezier(CONST GpPointF *pts, REAL tension, REAL *x1,
REAL *y1, REAL *x2, REAL *y2)
{
REAL xdiff, ydiff;
/* calculate tangent */
xdiff = pts[2].X - pts[0].X;
ydiff = pts[2].Y - pts[0].Y;
/* apply tangent to get control points */
*x1 = pts[1].X - tension * xdiff;
*y1 = pts[1].Y - tension * ydiff;
*x2 = pts[1].X + tension * xdiff;
*y2 = pts[1].Y + tension * ydiff;
}
/* GdipDrawCurve helper function.
* Calculates Bezier points from cardinal spline endpoints. */
static void calc_curve_bezier_endp(REAL xend, REAL yend, REAL xadj, REAL yadj,
REAL tension, REAL *x, REAL *y)
{
/* tangent at endpoints is the line from the endpoint to the adjacent point */
*x = roundr(tension * (xadj - xend) + xend);
*y = roundr(tension * (yadj - yend) + yend);
}
/* 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. Probably
* should not be called on an hdc that has a path you care about. */
static void draw_cap(GpGraphics *graphics, COLORREF color, GpLineCap cap, REAL size,
const GpCustomLineCap *custom, REAL x1, REAL y1, REAL x2, REAL y2)
{
HGDIOBJ oldbrush = NULL, oldpen = NULL;
GpMatrix *matrix = NULL;
HBRUSH brush = NULL;
HPEN pen = NULL;
PointF ptf[4], *custptf = NULL;
POINT pt[4], *custpt = NULL;
BYTE *tp = NULL;
REAL theta, dsmall, dbig, dx, dy = 0.0;
INT i, count;
LOGBRUSH lb;
BOOL customstroke;
if((x1 == x2) && (y1 == y2))
return;
theta = gdiplus_atan2(y2 - y1, x2 - x1);
customstroke = (cap == LineCapCustom) && custom && (!custom->fill);
if(!customstroke){
brush = CreateSolidBrush(color);
lb.lbStyle = BS_SOLID;
lb.lbColor = color;
lb.lbHatch = 0;
pen = ExtCreatePen(PS_GEOMETRIC | PS_SOLID | PS_ENDCAP_FLAT |
PS_JOIN_MITER, 1, &lb, 0,
NULL);
oldbrush = SelectObject(graphics->hdc, brush);
oldpen = SelectObject(graphics->hdc, pen);
}
switch(cap){
case LineCapFlat:
break;
case LineCapSquare:
case LineCapSquareAnchor:
case LineCapDiamondAnchor:
size = size * (cap & LineCapNoAnchor ? ANCHOR_WIDTH : 1.0) / 2.0;
if(cap == LineCapDiamondAnchor){
dsmall = cos(theta + M_PI_2) * size;
dbig = sin(theta + M_PI_2) * size;
}
else{
dsmall = cos(theta + M_PI_4) * size;
dbig = sin(theta + M_PI_4) * size;
}
ptf[0].X = x2 - dsmall;
ptf[1].X = x2 + dbig;
ptf[0].Y = y2 - dbig;
ptf[3].Y = y2 + dsmall;
ptf[1].Y = y2 - dsmall;
ptf[2].Y = y2 + dbig;
ptf[3].X = x2 - dbig;
ptf[2].X = x2 + dsmall;
transform_and_round_points(graphics, pt, ptf, 4);
Polygon(graphics->hdc, pt, 4);
break;
case LineCapArrowAnchor:
size = size * 4.0 / sqrt(3.0);
dx = cos(M_PI / 6.0 + theta) * size;
dy = sin(M_PI / 6.0 + theta) * size;
ptf[0].X = x2 - dx;
ptf[0].Y = y2 - dy;
dx = cos(- M_PI / 6.0 + theta) * size;
dy = sin(- M_PI / 6.0 + theta) * size;
ptf[1].X = x2 - dx;
ptf[1].Y = y2 - dy;
ptf[2].X = x2;
ptf[2].Y = y2;
transform_and_round_points(graphics, pt, ptf, 3);
Polygon(graphics->hdc, pt, 3);
break;
case LineCapRoundAnchor:
dx = dy = ANCHOR_WIDTH * size / 2.0;
ptf[0].X = x2 - dx;
ptf[0].Y = y2 - dy;
ptf[1].X = x2 + dx;
ptf[1].Y = y2 + dy;
transform_and_round_points(graphics, pt, ptf, 2);
Ellipse(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y);
break;
case LineCapTriangle:
size = size / 2.0;
dx = cos(M_PI_2 + theta) * size;
dy = sin(M_PI_2 + theta) * size;
ptf[0].X = x2 - dx;
ptf[0].Y = y2 - dy;
ptf[1].X = x2 + dx;
ptf[1].Y = y2 + dy;
dx = cos(theta) * size;
dy = sin(theta) * size;
ptf[2].X = x2 + dx;
ptf[2].Y = y2 + dy;
transform_and_round_points(graphics, pt, ptf, 3);
Polygon(graphics->hdc, pt, 3);
break;
case LineCapRound:
dx = dy = size / 2.0;
ptf[0].X = x2 - dx;
ptf[0].Y = y2 - dy;
ptf[1].X = x2 + dx;
ptf[1].Y = y2 + dy;
dx = -cos(M_PI_2 + theta) * size;
dy = -sin(M_PI_2 + theta) * size;
ptf[2].X = x2 - dx;
ptf[2].Y = y2 - dy;
ptf[3].X = x2 + dx;
ptf[3].Y = y2 + dy;
transform_and_round_points(graphics, pt, ptf, 4);
Pie(graphics->hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y, pt[2].x,
pt[2].y, pt[3].x, pt[3].y);
break;
case LineCapCustom:
if(!custom)
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);
transform_and_round_points(graphics, custpt, custptf, count);
for(i = 0; i < count; i++)
tp[i] = convert_path_point_type(custom->pathdata.Types[i]);
if(custom->fill){
BeginPath(graphics->hdc);
PolyDraw(graphics->hdc, custpt, tp, count);
EndPath(graphics->hdc);
StrokeAndFillPath(graphics->hdc);
}
else
PolyDraw(graphics->hdc, custpt, tp, count);
custend:
GdipFree(custptf);
GdipFree(custpt);
GdipFree(tp);
GdipDeleteMatrix(matrix);
break;
default:
break;
}
if(!customstroke){
SelectObject(graphics->hdc, oldbrush);
SelectObject(graphics->hdc, oldpen);
DeleteObject(brush);
DeleteObject(pen);
}
}
/* 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 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;
if((y1 == *y2) && (x1 == *x2))
return;
dist = sqrt((*x2 - x1) * (*x2 - x1) + (*y2 - y1) * (*y2 - y1)) * -percent;
theta = gdiplus_atan2((*y2 - y1), (*x2 - x1));
dx = cos(theta) * dist;
dy = sin(theta) * dist;
*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 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;
dx = *x2 - x1;
dy = *y2 - y1;
if(dx == 0 && dy == 0)
return;
percent = amt / sqrt(dx * dx + dy * dy);
if(percent >= 1.0){
*x2 = x1;
*y2 = y1;
return;
}
shorten_line_percent(x1, y1, x2, y2, percent);
}
/* Draws lines between the given points, and if caps is true then draws an endcap
* at the end of the last line. */
static GpStatus draw_polyline(GpGraphics *graphics, GpPen *pen,
GDIPCONST GpPointF * pt, INT count, BOOL caps)
{
POINT *pti = NULL;
GpPointF *ptcopy = NULL;
GpStatus status = GenericError;
if(!count)
return Ok;
pti = GdipAlloc(count * sizeof(POINT));
ptcopy = GdipAlloc(count * sizeof(GpPointF));
if(!pti || !ptcopy){
status = OutOfMemory;
goto end;
}
memcpy(ptcopy, pt, count * sizeof(GpPointF));
if(caps){
if(pen->endcap == LineCapArrowAnchor)
shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
&ptcopy[count-1].X, &ptcopy[count-1].Y, pen->width);
else if((pen->endcap == LineCapCustom) && pen->customend)
shorten_line_amt(ptcopy[count-2].X, ptcopy[count-2].Y,
&ptcopy[count-1].X, &ptcopy[count-1].Y,
pen->customend->inset * pen->width);
if(pen->startcap == LineCapArrowAnchor)
shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
&ptcopy[0].X, &ptcopy[0].Y, pen->width);
else if((pen->startcap == LineCapCustom) && pen->customstart)
shorten_line_amt(ptcopy[1].X, ptcopy[1].Y,
&ptcopy[0].X, &ptcopy[0].Y,
pen->customstart->inset * pen->width);
draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X, pt[count - 1].Y);
draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
pt[1].X, pt[1].Y, pt[0].X, pt[0].Y);
}
transform_and_round_points(graphics, pti, ptcopy, count);
if(Polyline(graphics->hdc, pti, count))
status = Ok;
end:
GdipFree(pti);
GdipFree(ptcopy);
return status;
}
/* Conducts a linear search to find the bezier points that will back off
* the endpoint of the curve by a distance of amt. Linear search works
* better than binary in this case because there are multiple solutions,
* and binary searches often find a bad one. I don't think this is what
* Windows does but short of rendering the bezier without GDI's help it's
* the best we can do. If rev then work from the start of the passed points
* instead of the end. */
static void shorten_bezier_amt(GpPointF * pt, REAL amt, BOOL rev)
{
GpPointF origpt[4];
REAL percent = 0.00, dx, dy, origx, origy, diff = -1.0;
INT i, first = 0, second = 1, third = 2, fourth = 3;
if(rev){
first = 3;
second = 2;
third = 1;
fourth = 0;
}
origx = pt[fourth].X;
origy = pt[fourth].Y;
memcpy(origpt, pt, sizeof(GpPointF) * 4);
for(i = 0; (i < MAX_ITERS) && (diff < amt); i++){
/* reset bezier points to original values */
memcpy(pt, origpt, sizeof(GpPointF) * 4);
/* Perform magic on bezier points. Order is important here.*/
shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
shorten_line_percent(pt[first].X, pt[first].Y, &pt[second].X, &pt[second].Y, percent);
shorten_line_percent(pt[second].X, pt[second].Y, &pt[third].X, &pt[third].Y, percent);
shorten_line_percent(pt[third].X, pt[third].Y, &pt[fourth].X, &pt[fourth].Y, percent);
dx = pt[fourth].X - origx;
dy = pt[fourth].Y - origy;
diff = sqrt(dx * dx + dy * dy);
percent += 0.0005 * amt;
}
}
/* Draws bezier curves between given points, and if caps is true then draws an
* endcap at the end of the last line. */
static GpStatus draw_polybezier(GpGraphics *graphics, GpPen *pen,
GDIPCONST GpPointF * pt, INT count, BOOL caps)
{
POINT *pti;
GpPointF *ptcopy;
GpStatus status = GenericError;
if(!count)
return Ok;
pti = GdipAlloc(count * sizeof(POINT));
ptcopy = GdipAlloc(count * sizeof(GpPointF));
if(!pti || !ptcopy){
status = OutOfMemory;
goto end;
}
memcpy(ptcopy, pt, count * sizeof(GpPointF));
if(caps){
if(pen->endcap == LineCapArrowAnchor)
shorten_bezier_amt(&ptcopy[count-4], pen->width, FALSE);
else if((pen->endcap == LineCapCustom) && pen->customend)
shorten_bezier_amt(&ptcopy[count-4], pen->width * pen->customend->inset,
FALSE);
if(pen->startcap == LineCapArrowAnchor)
shorten_bezier_amt(ptcopy, pen->width, TRUE);
else if((pen->startcap == LineCapCustom) && pen->customstart)
shorten_bezier_amt(ptcopy, pen->width * pen->customstart->inset, TRUE);
/* 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(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
pt[count - 1].X, pt[count - 1].Y);
draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
pt[0].X - (ptcopy[0].X - ptcopy[1].X),
pt[0].Y - (ptcopy[0].Y - ptcopy[1].Y), pt[0].X, pt[0].Y);
}
transform_and_round_points(graphics, pti, ptcopy, count);
PolyBezier(graphics->hdc, pti, count);
status = Ok;
end:
GdipFree(pti);
GdipFree(ptcopy);
return status;
}
/* Draws a combination of bezier curves and lines between points. */
static GpStatus draw_poly(GpGraphics *graphics, GpPen *pen, GDIPCONST GpPointF * pt,
GDIPCONST BYTE * types, INT count, BOOL caps)
{
POINT *pti = GdipAlloc(count * sizeof(POINT));
BYTE *tp = GdipAlloc(count);
GpPointF *ptcopy = GdipAlloc(count * sizeof(GpPointF));
INT i, j;
GpStatus status = GenericError;
if(!count){
status = Ok;
goto end;
}
if(!pti || !tp || !ptcopy){
status = OutOfMemory;
goto end;
}
for(i = 1; i < count; i++){
if((types[i] & PathPointTypePathTypeMask) == PathPointTypeBezier){
if((i + 2 >= count) || !(types[i + 1] & PathPointTypeBezier)
|| !(types[i + 1] & PathPointTypeBezier)){
ERR("Bad bezier points\n");
goto end;
}
i += 2;
}
}
memcpy(ptcopy, pt, count * sizeof(GpPointF));
/* If we are drawing caps, go through the points and adjust them accordingly,
* and draw the caps. */
if(caps){
switch(types[count - 1] & PathPointTypePathTypeMask){
case PathPointTypeBezier:
if(pen->endcap == LineCapArrowAnchor)
shorten_bezier_amt(&ptcopy[count - 4], pen->width, FALSE);
else if((pen->endcap == LineCapCustom) && pen->customend)
shorten_bezier_amt(&ptcopy[count - 4],
pen->width * pen->customend->inset, FALSE);
draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
pt[count - 1].X - (ptcopy[count - 1].X - ptcopy[count - 2].X),
pt[count - 1].Y - (ptcopy[count - 1].Y - ptcopy[count - 2].Y),
pt[count - 1].X, pt[count - 1].Y);
break;
case PathPointTypeLine:
if(pen->endcap == LineCapArrowAnchor)
shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
&ptcopy[count - 1].X, &ptcopy[count - 1].Y,
pen->width);
else if((pen->endcap == LineCapCustom) && pen->customend)
shorten_line_amt(ptcopy[count - 2].X, ptcopy[count - 2].Y,
&ptcopy[count - 1].X, &ptcopy[count - 1].Y,
pen->customend->inset * pen->width);
draw_cap(graphics, pen->brush->lb.lbColor, pen->endcap, pen->width, pen->customend,
pt[count - 2].X, pt[count - 2].Y, pt[count - 1].X,
pt[count - 1].Y);
break;
default:
ERR("Bad path last point\n");
goto end;
}
/* Find start of points */
for(j = 1; j < count && ((types[j] & PathPointTypePathTypeMask)
== PathPointTypeStart); j++);
switch(types[j] & PathPointTypePathTypeMask){
case PathPointTypeBezier:
if(pen->startcap == LineCapArrowAnchor)
shorten_bezier_amt(&ptcopy[j - 1], pen->width, TRUE);
else if((pen->startcap == LineCapCustom) && pen->customstart)
shorten_bezier_amt(&ptcopy[j - 1],
pen->width * pen->customstart->inset, TRUE);
draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
pt[j - 1].X - (ptcopy[j - 1].X - ptcopy[j].X),
pt[j - 1].Y - (ptcopy[j - 1].Y - ptcopy[j].Y),
pt[j - 1].X, pt[j - 1].Y);
break;
case PathPointTypeLine:
if(pen->startcap == LineCapArrowAnchor)
shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
&ptcopy[j - 1].X, &ptcopy[j - 1].Y,
pen->width);
else if((pen->startcap == LineCapCustom) && pen->customstart)
shorten_line_amt(ptcopy[j].X, ptcopy[j].Y,
&ptcopy[j - 1].X, &ptcopy[j - 1].Y,
pen->customstart->inset * pen->width);
draw_cap(graphics, pen->brush->lb.lbColor, pen->startcap, pen->width, pen->customstart,
pt[j].X, pt[j].Y, pt[j - 1].X,
pt[j - 1].Y);
break;
default:
ERR("Bad path points\n");
goto end;
}
}
transform_and_round_points(graphics, pti, ptcopy, count);
for(i = 0; i < count; i++){
tp[i] = convert_path_point_type(types[i]);
}
PolyDraw(graphics->hdc, pti, tp, count);
status = Ok;
end:
GdipFree(pti);
GdipFree(ptcopy);
GdipFree(tp);
return status;
}
GpStatus WINGDIPAPI GdipCreateFromHDC(HDC hdc, GpGraphics **graphics)
{
return GdipCreateFromHDC2(hdc, NULL, graphics);
}
GpStatus WINGDIPAPI GdipCreateFromHDC2(HDC hdc, HANDLE hDevice, GpGraphics **graphics)
{
GpStatus retval;
if(hDevice != NULL) {
FIXME("Don't know how to hadle parameter hDevice\n");
return NotImplemented;
}
if(hdc == NULL)
return OutOfMemory;
if(graphics == NULL)
return InvalidParameter;
*graphics = GdipAlloc(sizeof(GpGraphics));
if(!*graphics) return OutOfMemory;
if((retval = GdipCreateMatrix(&(*graphics)->worldtrans)) != Ok){
GdipFree(*graphics);
return retval;
}
(*graphics)->hdc = hdc;
(*graphics)->hwnd = NULL;
(*graphics)->smoothing = SmoothingModeDefault;
(*graphics)->compqual = CompositingQualityDefault;
(*graphics)->interpolation = InterpolationModeDefault;
(*graphics)->pixeloffset = PixelOffsetModeDefault;
(*graphics)->compmode = CompositingModeSourceOver;
(*graphics)->unit = UnitDisplay;
(*graphics)->scale = 1.0;
return Ok;
}
GpStatus WINGDIPAPI GdipCreateFromHWND(HWND hwnd, GpGraphics **graphics)
{
GpStatus ret;
if((ret = GdipCreateFromHDC(GetDC(hwnd), graphics)) != Ok)
return ret;
(*graphics)->hwnd = hwnd;
return Ok;
}
GpStatus WINGDIPAPI GdipCreateMetafileFromEmf(HENHMETAFILE hemf, BOOL delete,
GpMetafile **metafile)
{
static int calls;
if(!hemf || !metafile)
return InvalidParameter;
if(!(calls++))
FIXME("not implemented\n");
return NotImplemented;
}
GpStatus WINGDIPAPI GdipCreateMetafileFromWmf(HMETAFILE hwmf, BOOL delete,
GDIPCONST WmfPlaceableFileHeader * placeable, GpMetafile **metafile)
{
IStream *stream = NULL;
UINT read;
BYTE* copy;
HENHMETAFILE hemf;
GpStatus retval = GenericError;
if(!hwmf || !metafile || !placeable)
return InvalidParameter;
*metafile = NULL;
read = GetMetaFileBitsEx(hwmf, 0, NULL);
if(!read)
return GenericError;
copy = GdipAlloc(read);
GetMetaFileBitsEx(hwmf, read, copy);
hemf = SetWinMetaFileBits(read, copy, NULL, NULL);
GdipFree(copy);
read = GetEnhMetaFileBits(hemf, 0, NULL);
copy = GdipAlloc(read);
GetEnhMetaFileBits(hemf, read, copy);
DeleteEnhMetaFile(hemf);
if(CreateStreamOnHGlobal(copy, TRUE, &stream) != S_OK){
ERR("could not make stream\n");
GdipFree(copy);
goto err;
}
*metafile = GdipAlloc(sizeof(GpMetafile));
if(!*metafile){
retval = OutOfMemory;
goto err;
}
if(OleLoadPicture(stream, 0, FALSE, &IID_IPicture,
(LPVOID*) &((*metafile)->image.picture)) != S_OK)
goto err;
(*metafile)->image.type = ImageTypeMetafile;
(*metafile)->bounds.X = ((REAL) placeable->BoundingBox.Left) / ((REAL) placeable->Inch);
(*metafile)->bounds.Y = ((REAL) placeable->BoundingBox.Right) / ((REAL) placeable->Inch);
(*metafile)->bounds.Width = ((REAL) (placeable->BoundingBox.Right
- placeable->BoundingBox.Left)) / ((REAL) placeable->Inch);
(*metafile)->bounds.Height = ((REAL) (placeable->BoundingBox.Bottom
- placeable->BoundingBox.Top)) / ((REAL) placeable->Inch);
(*metafile)->unit = UnitInch;
if(delete)
DeleteMetaFile(hwmf);
return Ok;
err:
GdipFree(*metafile);
IStream_Release(stream);
return retval;
}
GpStatus WINGDIPAPI GdipCreateStreamOnFile(GDIPCONST WCHAR * filename,
UINT access, IStream **stream)
{
DWORD dwMode;
HRESULT ret;
if(!stream || !filename)
return InvalidParameter;
if(access & GENERIC_WRITE)
dwMode = STGM_SHARE_DENY_WRITE | STGM_WRITE | STGM_CREATE;
else if(access & GENERIC_READ)
dwMode = STGM_SHARE_DENY_WRITE | STGM_READ | STGM_FAILIFTHERE;
else
return InvalidParameter;
ret = SHCreateStreamOnFileW(filename, dwMode, stream);
return hresult_to_status(ret);
}
GpStatus WINGDIPAPI GdipDeleteGraphics(GpGraphics *graphics)
{
if(!graphics) return InvalidParameter;
if(graphics->hwnd)
ReleaseDC(graphics->hwnd, graphics->hdc);
GdipDeleteMatrix(graphics->worldtrans);
HeapFree(GetProcessHeap(), 0, graphics);
return Ok;
}
GpStatus WINGDIPAPI GdipDrawArc(GpGraphics *graphics, GpPen *pen, REAL x,
REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
{
INT save_state, num_pts;
GpPointF points[MAX_ARC_PTS];
GpStatus retval;
if(!graphics || !pen || width <= 0 || height <= 0)
return InvalidParameter;
num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
save_state = prepare_dc(graphics, pen);
retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawArcI(GpGraphics *graphics, GpPen *pen, INT x,
INT y, INT width, INT height, REAL startAngle, REAL sweepAngle)
{
INT save_state, num_pts;
GpPointF points[MAX_ARC_PTS];
GpStatus retval;
if(!graphics || !pen || width <= 0 || height <= 0)
return InvalidParameter;
num_pts = arc2polybezier(points, x, y, width, height, startAngle, sweepAngle);
save_state = prepare_dc(graphics, pen);
retval = draw_polybezier(graphics, pen, points, num_pts, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawBezier(GpGraphics *graphics, GpPen *pen, REAL x1,
REAL y1, REAL x2, REAL y2, REAL x3, REAL y3, REAL x4, REAL y4)
{
INT save_state;
GpPointF pt[4];
GpStatus retval;
if(!graphics || !pen)
return InvalidParameter;
pt[0].X = x1;
pt[0].Y = y1;
pt[1].X = x2;
pt[1].Y = y2;
pt[2].X = x3;
pt[2].Y = y3;
pt[3].X = x4;
pt[3].Y = y4;
save_state = prepare_dc(graphics, pen);
retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawBezierI(GpGraphics *graphics, GpPen *pen, INT x1,
INT y1, INT x2, INT y2, INT x3, INT y3, INT x4, INT y4)
{
INT save_state;
GpPointF pt[4];
GpStatus retval;
if(!graphics || !pen)
return InvalidParameter;
pt[0].X = x1;
pt[0].Y = y1;
pt[1].X = x2;
pt[1].Y = y2;
pt[2].X = x3;
pt[2].Y = y3;
pt[3].X = x4;
pt[3].Y = y4;
save_state = prepare_dc(graphics, pen);
retval = draw_polybezier(graphics, pen, pt, 4, TRUE);
restore_dc(graphics, save_state);
return retval;
}
/* Approximates cardinal spline with Bezier curves. */
GpStatus WINGDIPAPI GdipDrawCurve2(GpGraphics *graphics, GpPen *pen,
GDIPCONST GpPointF *points, INT count, REAL tension)
{
/* PolyBezier expects count*3-2 points. */
INT i, len_pt = count*3-2, save_state;
GpPointF *pt;
REAL x1, x2, y1, y2;
GpStatus retval;
if(!graphics || !pen)
return InvalidParameter;
pt = GdipAlloc(len_pt * sizeof(GpPointF));
tension = tension * TENSION_CONST;
calc_curve_bezier_endp(points[0].X, points[0].Y, points[1].X, points[1].Y,
tension, &x1, &y1);
pt[0].X = points[0].X;
pt[0].Y = points[0].Y;
pt[1].X = x1;
pt[1].Y = y1;
for(i = 0; i < count-2; i++){
calc_curve_bezier(&(points[i]), tension, &x1, &y1, &x2, &y2);
pt[3*i+2].X = x1;
pt[3*i+2].Y = y1;
pt[3*i+3].X = points[i+1].X;
pt[3*i+3].Y = points[i+1].Y;
pt[3*i+4].X = x2;
pt[3*i+4].Y = y2;
}
calc_curve_bezier_endp(points[count-1].X, points[count-1].Y,
points[count-2].X, points[count-2].Y, tension, &x1, &y1);
pt[len_pt-2].X = x1;
pt[len_pt-2].Y = y1;
pt[len_pt-1].X = points[count-1].X;
pt[len_pt-1].Y = points[count-1].Y;
save_state = prepare_dc(graphics, pen);
retval = draw_polybezier(graphics, pen, pt, len_pt, TRUE);
GdipFree(pt);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawImageI(GpGraphics *graphics, GpImage *image, INT x,
INT y)
{
UINT width, height, srcw, srch;
if(!graphics || !image)
return InvalidParameter;
GdipGetImageWidth(image, &width);
GdipGetImageHeight(image, &height);
srcw = width * (((REAL) INCH_HIMETRIC) /
((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX)));
srch = height * (((REAL) INCH_HIMETRIC) /
((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY)));
if(image->type != ImageTypeMetafile){
y += height;
height *= -1;
}
IPicture_Render(image->picture, graphics->hdc, x, y, width, height,
0, 0, srcw, srch, NULL);
return Ok;
}
/* FIXME: partially implemented (only works for rectangular parallelograms) */
GpStatus WINGDIPAPI GdipDrawImagePointsRect(GpGraphics *graphics, GpImage *image,
GDIPCONST GpPointF *points, INT count, REAL srcx, REAL srcy, REAL srcwidth,
REAL srcheight, GpUnit srcUnit, GDIPCONST GpImageAttributes* imageAttributes,
DrawImageAbort callback, VOID * callbackData)
{
GpPointF ptf[3];
POINT pti[3];
REAL dx, dy;
TRACE("%p %p %p %d %f %f %f %f %d %p %p %p\n", graphics, image, points, count,
srcx, srcy, srcwidth, srcheight, srcUnit, imageAttributes, callback,
callbackData);
if(!graphics || !image || !points || !imageAttributes || count != 3)
return InvalidParameter;
if(srcUnit == UnitInch)
dx = dy = (REAL) INCH_HIMETRIC;
else if(srcUnit == UnitPixel){
dx = ((REAL) INCH_HIMETRIC) /
((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSX));
dy = ((REAL) INCH_HIMETRIC) /
((REAL) GetDeviceCaps(graphics->hdc, LOGPIXELSY));
}
else
return NotImplemented;
memcpy(ptf, points, 3 * sizeof(GpPointF));
transform_and_round_points(graphics, pti, ptf, 3);
/* IPicture renders bitmaps with the y-axis reversed
* FIXME: flipping for unknown image type might not be correct. */
if(image->type != ImageTypeMetafile){
INT temp;
temp = pti[0].y;
pti[0].y = pti[2].y;
pti[2].y = temp;
}
if(IPicture_Render(image->picture, graphics->hdc,
pti[0].x, pti[0].y, pti[1].x - pti[0].x, pti[2].y - pti[0].y,
srcx * dx, srcy * dy,
srcwidth * dx, srcheight * dy,
NULL) != S_OK){
if(callback)
callback(callbackData);
return GenericError;
}
return Ok;
}
GpStatus WINGDIPAPI GdipDrawImageRectRect(GpGraphics *graphics, GpImage *image,
REAL dstx, REAL dsty, REAL dstwidth, REAL dstheight, REAL srcx, REAL srcy,
REAL srcwidth, REAL srcheight, GpUnit srcUnit,
GDIPCONST GpImageAttributes* imageattr, DrawImageAbort callback,
VOID * callbackData)
{
GpPointF points[3];
points[0].X = dstx;
points[0].Y = dsty;
points[1].X = dstx + dstwidth;
points[1].Y = dsty;
points[2].X = dstx;
points[2].Y = dsty + dstheight;
return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
srcwidth, srcheight, srcUnit, imageattr, callback, callbackData);
}
GpStatus WINGDIPAPI GdipDrawImageRectRectI(GpGraphics *graphics, GpImage *image,
INT dstx, INT dsty, INT dstwidth, INT dstheight, INT srcx, INT srcy,
INT srcwidth, INT srcheight, GpUnit srcUnit,
GDIPCONST GpImageAttributes* imageAttributes, DrawImageAbort callback,
VOID * callbackData)
{
GpPointF points[3];
points[0].X = dstx;
points[0].Y = dsty;
points[1].X = dstx + dstwidth;
points[1].Y = dsty;
points[2].X = dstx;
points[2].Y = dsty + dstheight;
return GdipDrawImagePointsRect(graphics, image, points, 3, srcx, srcy,
srcwidth, srcheight, srcUnit, imageAttributes, callback, callbackData);
}
GpStatus WINGDIPAPI GdipDrawLine(GpGraphics *graphics, GpPen *pen, REAL x1,
REAL y1, REAL x2, REAL y2)
{
INT save_state;
GpPointF pt[2];
GpStatus retval;
if(!pen || !graphics)
return InvalidParameter;
pt[0].X = x1;
pt[0].Y = y1;
pt[1].X = x2;
pt[1].Y = y2;
save_state = prepare_dc(graphics, pen);
retval = draw_polyline(graphics, pen, pt, 2, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawLineI(GpGraphics *graphics, GpPen *pen, INT x1,
INT y1, INT x2, INT y2)
{
INT save_state;
GpPointF pt[2];
GpStatus retval;
if(!pen || !graphics)
return InvalidParameter;
pt[0].X = (REAL)x1;
pt[0].Y = (REAL)y1;
pt[1].X = (REAL)x2;
pt[1].Y = (REAL)y2;
save_state = prepare_dc(graphics, pen);
retval = draw_polyline(graphics, pen, pt, 2, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawLines(GpGraphics *graphics, GpPen *pen, GDIPCONST
GpPointF *points, INT count)
{
INT save_state;
GpStatus retval;
if(!pen || !graphics || (count < 2))
return InvalidParameter;
save_state = prepare_dc(graphics, pen);
retval = draw_polyline(graphics, pen, points, count, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawLinesI(GpGraphics *graphics, GpPen *pen, GDIPCONST
GpPoint *points, INT count)
{
INT save_state;
GpStatus retval;
GpPointF *ptf = NULL;
int i;
if(!pen || !graphics || (count < 2))
return InvalidParameter;
ptf = GdipAlloc(count * sizeof(GpPointF));
if(!ptf) return OutOfMemory;
for(i = 0; i < count; i ++){
ptf[i].X = (REAL) points[i].X;
ptf[i].Y = (REAL) points[i].Y;
}
save_state = prepare_dc(graphics, pen);
retval = draw_polyline(graphics, pen, ptf, count, TRUE);
restore_dc(graphics, save_state);
GdipFree(ptf);
return retval;
}
GpStatus WINGDIPAPI GdipDrawPath(GpGraphics *graphics, GpPen *pen, GpPath *path)
{
INT save_state;
GpStatus retval;
if(!pen || !graphics)
return InvalidParameter;
save_state = prepare_dc(graphics, pen);
retval = draw_poly(graphics, pen, path->pathdata.Points,
path->pathdata.Types, path->pathdata.Count, TRUE);
restore_dc(graphics, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipDrawPie(GpGraphics *graphics, GpPen *pen, REAL x,
REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
{
INT save_state;
if(!graphics || !pen)
return InvalidParameter;
save_state = prepare_dc(graphics, pen);
SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
restore_dc(graphics, save_state);
return Ok;
}
GpStatus WINGDIPAPI GdipDrawRectangleI(GpGraphics *graphics, GpPen *pen, INT x,
INT y, INT width, INT height)
{
INT save_state;
GpPointF ptf[4];
POINT pti[4];
if(!pen || !graphics)
return InvalidParameter;
ptf[0].X = x;
ptf[0].Y = y;
ptf[1].X = x + width;
ptf[1].Y = y;
ptf[2].X = x + width;
ptf[2].Y = y + height;
ptf[3].X = x;
ptf[3].Y = y + height;
save_state = prepare_dc(graphics, pen);
SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
transform_and_round_points(graphics, pti, ptf, 4);
Polygon(graphics->hdc, pti, 4);
restore_dc(graphics, save_state);
return Ok;
}
GpStatus WINGDIPAPI GdipDrawRectangles(GpGraphics *graphics, GpPen *pen,
GDIPCONST GpRectF* rects, INT count)
{
GpPointF *ptf;
POINT *pti;
INT save_state, i;
if(!graphics || !pen || !rects || count < 1)
return InvalidParameter;
ptf = GdipAlloc(4 * count * sizeof(GpPointF));
pti = GdipAlloc(4 * count * sizeof(POINT));
if(!ptf || !pti){
GdipFree(ptf);
GdipFree(pti);
return OutOfMemory;
}
for(i = 0; i < count; i++){
ptf[4 * i + 3].X = ptf[4 * i].X = rects[i].X;
ptf[4 * i + 1].Y = ptf[4 * i].Y = rects[i].Y;
ptf[4 * i + 2].X = ptf[4 * i + 1].X = rects[i].X + rects[i].Width;
ptf[4 * i + 3].Y = ptf[4 * i + 2].Y = rects[i].Y + rects[i].Height;
}
save_state = prepare_dc(graphics, pen);
SelectObject(graphics->hdc, GetStockObject(NULL_BRUSH));
transform_and_round_points(graphics, pti, ptf, 4 * count);
for(i = 0; i < count; i++)
Polygon(graphics->hdc, &pti[4 * i], 4);
restore_dc(graphics, save_state);
GdipFree(ptf);
GdipFree(pti);
return Ok;
}
GpStatus WINGDIPAPI GdipDrawString(GpGraphics *graphics, GDIPCONST WCHAR *string,
INT length, GDIPCONST GpFont *font, GDIPCONST RectF *rect,
GDIPCONST GpStringFormat *format, GDIPCONST GpBrush *brush)
{
HRGN rgn = NULL;
HFONT gdifont;
LOGFONTW lfw;
TEXTMETRICW textmet;
GpPointF pt[2], rectcpy[4];
POINT corners[4];
WCHAR* stringdup;
REAL angle, ang_cos, ang_sin, rel_width, rel_height;
INT sum = 0, height = 0, fit, fitcpy, save_state, i, j, lret, nwidth,
nheight;
SIZE size;
RECT drawcoord;
if(!graphics || !string || !font || !brush || !rect)
return InvalidParameter;
if((brush->bt != BrushTypeSolidColor)){
FIXME("not implemented for given parameters\n");
return NotImplemented;
}
if(format)
TRACE("may be ignoring some format flags: attr %x\n", format->attr);
if(length == -1) length = lstrlenW(string);
stringdup = GdipAlloc(length * sizeof(WCHAR));
if(!stringdup) return OutOfMemory;
save_state = SaveDC(graphics->hdc);
SetBkMode(graphics->hdc, TRANSPARENT);
SetTextColor(graphics->hdc, brush->lb.lbColor);
rectcpy[3].X = rectcpy[0].X = rect->X;
rectcpy[1].Y = rectcpy[0].Y = rect->Y;
rectcpy[2].X = rectcpy[1].X = rect->X + rect->Width;
rectcpy[3].Y = rectcpy[2].Y = rect->Y + rect->Height;
transform_and_round_points(graphics, corners, rectcpy, 4);
if(roundr(rect->Width) == 0 && roundr(rect->Height) == 0){
rel_width = rel_height = 1.0;
nwidth = nheight = INT_MAX;
}
else{
rel_width = sqrt((corners[1].x - corners[0].x) * (corners[1].x - corners[0].x) +
(corners[1].y - corners[0].y) * (corners[1].y - corners[0].y))
/ rect->Width;
rel_height = sqrt((corners[2].x - corners[1].x) * (corners[2].x - corners[1].x) +
(corners[2].y - corners[1].y) * (corners[2].y - corners[1].y))
/ rect->Height;
nwidth = roundr(rel_width * rect->Width);
nheight = roundr(rel_height * rect->Height);
rgn = CreatePolygonRgn(corners, 4, ALTERNATE);
SelectClipRgn(graphics->hdc, rgn);
}
/* Use gdi to find the font, then perform transformations on it (height,
* width, angle). */
SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
GetTextMetricsW(graphics->hdc, &textmet);
lfw = font->lfw;
lfw.lfHeight = roundr(((REAL)lfw.lfHeight) * rel_height);
lfw.lfWidth = roundr(textmet.tmAveCharWidth * rel_width);
pt[0].X = 0.0;
pt[0].Y = 0.0;
pt[1].X = 1.0;
pt[1].Y = 0.0;
GdipTransformMatrixPoints(graphics->worldtrans, pt, 2);
angle = gdiplus_atan2((pt[1].Y - pt[0].Y), (pt[1].X - pt[0].X));
ang_cos = cos(angle);
ang_sin = sin(angle);
lfw.lfEscapement = lfw.lfOrientation = -roundr((angle / M_PI) * 1800.0);
gdifont = CreateFontIndirectW(&lfw);
DeleteObject(SelectObject(graphics->hdc, CreateFontIndirectW(&lfw)));
for(i = 0, j = 0; i < length; i++){
if(!isprintW(string[i]) && (string[i] != '\n'))
continue;
stringdup[j] = string[i];
j++;
}
stringdup[j] = 0;
length = j;
while(sum < length){
drawcoord.left = corners[0].x + roundr(ang_sin * (REAL) height);
drawcoord.top = corners[0].y + roundr(ang_cos * (REAL) height);
GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
nwidth, &fit, NULL, &size);
fitcpy = fit;
if(fit == 0){
DrawTextW(graphics->hdc, stringdup + sum, 1, &drawcoord, DT_NOCLIP |
DT_EXPANDTABS);
break;
}
for(lret = 0; lret < fit; lret++)
if(*(stringdup + sum + lret) == '\n')
break;
/* Line break code (may look strange, but it imitates windows). */
if(lret < fit)
fit = lret; /* this is not an off-by-one error */
else if(fit < (length - sum)){
if(*(stringdup + sum + fit) == ' ')
while(*(stringdup + sum + fit) == ' ')
fit++;
else
while(*(stringdup + sum + fit - 1) != ' '){
fit--;
if(*(stringdup + sum + fit) == '\t')
break;
if(fit == 0){
fit = fitcpy;
break;
}
}
}
DrawTextW(graphics->hdc, stringdup + sum, min(length - sum, fit),
&drawcoord, DT_NOCLIP | DT_EXPANDTABS);
sum += fit + (lret < fitcpy ? 1 : 0);
height += size.cy;
if(height > nheight)
break;
/* Stop if this was a linewrap (but not if it was a linebreak). */
if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
break;
}
GdipFree(stringdup);
DeleteObject(rgn);
DeleteObject(gdifont);
RestoreDC(graphics->hdc, save_state);
return Ok;
}
GpStatus WINGDIPAPI GdipFillPath(GpGraphics *graphics, GpBrush *brush, GpPath *path)
{
INT save_state;
GpStatus retval;
if(!brush || !graphics || !path)
return InvalidParameter;
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SetPolyFillMode(graphics->hdc, (path->fill == FillModeAlternate ? ALTERNATE
: WINDING));
BeginPath(graphics->hdc);
retval = draw_poly(graphics, NULL, path->pathdata.Points,
path->pathdata.Types, path->pathdata.Count, FALSE);
if(retval != Ok)
goto end;
EndPath(graphics->hdc);
FillPath(graphics->hdc);
retval = Ok;
end:
RestoreDC(graphics->hdc, save_state);
return retval;
}
GpStatus WINGDIPAPI GdipFillPie(GpGraphics *graphics, GpBrush *brush, REAL x,
REAL y, REAL width, REAL height, REAL startAngle, REAL sweepAngle)
{
INT save_state;
if(!graphics || !brush)
return InvalidParameter;
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
draw_pie(graphics, x, y, width, height, startAngle, sweepAngle);
RestoreDC(graphics->hdc, save_state);
return Ok;
}
GpStatus WINGDIPAPI GdipFillPolygon(GpGraphics *graphics, GpBrush *brush,
GDIPCONST GpPointF *points, INT count, GpFillMode fillMode)
{
INT save_state;
GpPointF *ptf = NULL;
POINT *pti = NULL;
GpStatus retval = Ok;
if(!graphics || !brush || !points || !count)
return InvalidParameter;
ptf = GdipAlloc(count * sizeof(GpPointF));
pti = GdipAlloc(count * sizeof(POINT));
if(!ptf || !pti){
retval = OutOfMemory;
goto end;
}
memcpy(ptf, points, count * sizeof(GpPointF));
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
: WINDING));
transform_and_round_points(graphics, pti, ptf, count);
Polygon(graphics->hdc, pti, count);
RestoreDC(graphics->hdc, save_state);
end:
GdipFree(ptf);
GdipFree(pti);
return retval;
}
GpStatus WINGDIPAPI GdipFillPolygonI(GpGraphics *graphics, GpBrush *brush,
GDIPCONST GpPoint *points, INT count, GpFillMode fillMode)
{
INT save_state, i;
GpPointF *ptf = NULL;
POINT *pti = NULL;
GpStatus retval = Ok;
if(!graphics || !brush || !points || !count)
return InvalidParameter;
ptf = GdipAlloc(count * sizeof(GpPointF));
pti = GdipAlloc(count * sizeof(POINT));
if(!ptf || !pti){
retval = OutOfMemory;
goto end;
}
for(i = 0; i < count; i ++){
ptf[i].X = (REAL) points[i].X;
ptf[i].Y = (REAL) points[i].Y;
}
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
SetPolyFillMode(graphics->hdc, (fillMode == FillModeAlternate ? ALTERNATE
: WINDING));
transform_and_round_points(graphics, pti, ptf, count);
Polygon(graphics->hdc, pti, count);
RestoreDC(graphics->hdc, save_state);
end:
GdipFree(ptf);
GdipFree(pti);
return retval;
}
GpStatus WINGDIPAPI GdipFillRectangle(GpGraphics *graphics, GpBrush *brush,
REAL x, REAL y, REAL width, REAL height)
{
INT save_state;
GpPointF ptf[4];
POINT pti[4];
if(!graphics || !brush)
return InvalidParameter;
ptf[0].X = x;
ptf[0].Y = y;
ptf[1].X = x + width;
ptf[1].Y = y;
ptf[2].X = x + width;
ptf[2].Y = y + height;
ptf[3].X = x;
ptf[3].Y = y + height;
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
transform_and_round_points(graphics, pti, ptf, 4);
Polygon(graphics->hdc, pti, 4);
RestoreDC(graphics->hdc, save_state);
return Ok;
}
GpStatus WINGDIPAPI GdipFillRectangleI(GpGraphics *graphics, GpBrush *brush,
INT x, INT y, INT width, INT height)
{
INT save_state;
GpPointF ptf[4];
POINT pti[4];
if(!graphics || !brush)
return InvalidParameter;
ptf[0].X = x;
ptf[0].Y = y;
ptf[1].X = x + width;
ptf[1].Y = y;
ptf[2].X = x + width;
ptf[2].Y = y + height;
ptf[3].X = x;
ptf[3].Y = y + height;
save_state = SaveDC(graphics->hdc);
EndPath(graphics->hdc);
SelectObject(graphics->hdc, brush->gdibrush);
SelectObject(graphics->hdc, GetStockObject(NULL_PEN));
transform_and_round_points(graphics, pti, ptf, 4);
Polygon(graphics->hdc, pti, 4);
RestoreDC(graphics->hdc, save_state);
return Ok;
}
/* FIXME: Compositing mode is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetCompositingMode(GpGraphics *graphics,
CompositingMode *mode)
{
if(!graphics || !mode)
return InvalidParameter;
*mode = graphics->compmode;
return Ok;
}
/* FIXME: Compositing quality is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetCompositingQuality(GpGraphics *graphics,
CompositingQuality *quality)
{
if(!graphics || !quality)
return InvalidParameter;
*quality = graphics->compqual;
return Ok;
}
/* FIXME: Interpolation mode is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetInterpolationMode(GpGraphics *graphics,
InterpolationMode *mode)
{
if(!graphics || !mode)
return InvalidParameter;
*mode = graphics->interpolation;
return Ok;
}
GpStatus WINGDIPAPI GdipGetPageScale(GpGraphics *graphics, REAL *scale)
{
if(!graphics || !scale)
return InvalidParameter;
*scale = graphics->scale;
return Ok;
}
GpStatus WINGDIPAPI GdipGetPageUnit(GpGraphics *graphics, GpUnit *unit)
{
if(!graphics || !unit)
return InvalidParameter;
*unit = graphics->unit;
return Ok;
}
/* FIXME: Pixel offset mode is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
*mode)
{
if(!graphics || !mode)
return InvalidParameter;
*mode = graphics->pixeloffset;
return Ok;
}
/* FIXME: Smoothing mode is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetSmoothingMode(GpGraphics *graphics, SmoothingMode *mode)
{
if(!graphics || !mode)
return InvalidParameter;
*mode = graphics->smoothing;
return Ok;
}
/* FIXME: Text rendering hint is not used anywhere except the getter/setter. */
GpStatus WINGDIPAPI GdipGetTextRenderingHint(GpGraphics *graphics,
TextRenderingHint *hint)
{
if(!graphics || !hint)
return InvalidParameter;
*hint = graphics->texthint;
return Ok;
}
GpStatus WINGDIPAPI GdipGetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
{
if(!graphics || !matrix)
return InvalidParameter;
*matrix = *graphics->worldtrans;
return Ok;
}
/* Find the smallest rectangle that bounds the text when it is printed in rect
* according to the format options listed in format. If rect has 0 width and
* height, then just find the smallest rectangle that bounds the text when it's
* printed at location (rect->X, rect-Y). */
GpStatus WINGDIPAPI GdipMeasureString(GpGraphics *graphics,
GDIPCONST WCHAR *string, INT length, GDIPCONST GpFont *font,
GDIPCONST RectF *rect, GDIPCONST GpStringFormat *format, RectF *bounds,
INT *codepointsfitted, INT *linesfilled)
{
HFONT oldfont;
WCHAR* stringdup;
INT sum = 0, height = 0, fit, fitcpy, max_width = 0, i, j, lret, nwidth,
nheight;
SIZE size;
if(!graphics || !string || !font || !rect)
return InvalidParameter;
if(codepointsfitted || linesfilled){
FIXME("not implemented for given parameters\n");
return NotImplemented;
}
if(format)
TRACE("may be ignoring some format flags: attr %x\n", format->attr);
if(length == -1) length = lstrlenW(string);
stringdup = GdipAlloc(length * sizeof(WCHAR));
if(!stringdup) return OutOfMemory;
oldfont = SelectObject(graphics->hdc, CreateFontIndirectW(&font->lfw));
nwidth = roundr(rect->Width);
nheight = roundr(rect->Height);
if((nwidth == 0) && (nheight == 0))
nwidth = nheight = INT_MAX;
for(i = 0, j = 0; i < length; i++){
if(!isprintW(string[i]) && (string[i] != '\n'))
continue;
stringdup[j] = string[i];
j++;
}
stringdup[j] = 0;
length = j;
while(sum < length){
GetTextExtentExPointW(graphics->hdc, stringdup + sum, length - sum,
nwidth, &fit, NULL, &size);
fitcpy = fit;
if(fit == 0)
break;
for(lret = 0; lret < fit; lret++)
if(*(stringdup + sum + lret) == '\n')
break;
/* Line break code (may look strange, but it imitates windows). */
if(lret < fit)
fit = lret; /* this is not an off-by-one error */
else if(fit < (length - sum)){
if(*(stringdup + sum + fit) == ' ')
while(*(stringdup + sum + fit) == ' ')
fit++;
else
while(*(stringdup + sum + fit - 1) != ' '){
fit--;
if(*(stringdup + sum + fit) == '\t')
break;
if(fit == 0){
fit = fitcpy;
break;
}
}
}
GetTextExtentExPointW(graphics->hdc, stringdup + sum, fit,
nwidth, &j, NULL, &size);
sum += fit + (lret < fitcpy ? 1 : 0);
height += size.cy;
max_width = max(max_width, size.cx);
if(height > nheight)
break;
/* Stop if this was a linewrap (but not if it was a linebreak). */
if((lret == fitcpy) && format && (format->attr & StringFormatFlagsNoWrap))
break;
}
bounds->X = rect->X;
bounds->Y = rect->Y;
bounds->Width = (REAL)max_width;
bounds->Height = (REAL) min(height, nheight);
GdipFree(stringdup);
DeleteObject(SelectObject(graphics->hdc, oldfont));
return Ok;
}
GpStatus WINGDIPAPI GdipRestoreGraphics(GpGraphics *graphics, GraphicsState state)
{
static int calls;
if(!graphics)
return InvalidParameter;
if(!(calls++))
FIXME("graphics state not implemented\n");
return NotImplemented;
}
GpStatus WINGDIPAPI GdipRotateWorldTransform(GpGraphics *graphics, REAL angle,
GpMatrixOrder order)
{
if(!graphics)
return InvalidParameter;
return GdipRotateMatrix(graphics->worldtrans, angle, order);
}
GpStatus WINGDIPAPI GdipSaveGraphics(GpGraphics *graphics, GraphicsState *state)
{
static int calls;
if(!graphics || !state)
return InvalidParameter;
if(!(calls++))
FIXME("graphics state not implemented\n");
return NotImplemented;
}
GpStatus WINGDIPAPI GdipScaleWorldTransform(GpGraphics *graphics, REAL sx,
REAL sy, GpMatrixOrder order)
{
if(!graphics)
return InvalidParameter;
return GdipScaleMatrix(graphics->worldtrans, sx, sy, order);
}
GpStatus WINGDIPAPI GdipSetCompositingMode(GpGraphics *graphics,
CompositingMode mode)
{
if(!graphics)
return InvalidParameter;
graphics->compmode = mode;
return Ok;
}
GpStatus WINGDIPAPI GdipSetCompositingQuality(GpGraphics *graphics,
CompositingQuality quality)
{
if(!graphics)
return InvalidParameter;
graphics->compqual = quality;
return Ok;
}
GpStatus WINGDIPAPI GdipSetInterpolationMode(GpGraphics *graphics,
InterpolationMode mode)
{
if(!graphics)
return InvalidParameter;
graphics->interpolation = mode;
return Ok;
}
GpStatus WINGDIPAPI GdipSetPageScale(GpGraphics *graphics, REAL scale)
{
if(!graphics || (scale <= 0.0))
return InvalidParameter;
graphics->scale = scale;
return Ok;
}
GpStatus WINGDIPAPI GdipSetPageUnit(GpGraphics *graphics, GpUnit unit)
{
if(!graphics || (unit == UnitWorld))
return InvalidParameter;
graphics->unit = unit;
return Ok;
}
GpStatus WINGDIPAPI GdipSetPixelOffsetMode(GpGraphics *graphics, PixelOffsetMode
mode)
{
if(!graphics)
return InvalidParameter;
graphics->pixeloffset = mode;
return Ok;
}
GpStatus WINGDIPAPI GdipSetSmoothingMode(GpGraphics *graphics, SmoothingMode mode)
{
if(!graphics)
return InvalidParameter;
graphics->smoothing = mode;
return Ok;
}
GpStatus WINGDIPAPI GdipSetTextRenderingHint(GpGraphics *graphics,
TextRenderingHint hint)
{
if(!graphics)
return InvalidParameter;
graphics->texthint = hint;
return Ok;
}
GpStatus WINGDIPAPI GdipSetWorldTransform(GpGraphics *graphics, GpMatrix *matrix)
{
if(!graphics || !matrix)
return InvalidParameter;
GdipDeleteMatrix(graphics->worldtrans);
return GdipCloneMatrix(matrix, &graphics->worldtrans);
}
GpStatus WINGDIPAPI GdipTranslateWorldTransform(GpGraphics *graphics, REAL dx,
REAL dy, GpMatrixOrder order)
{
if(!graphics)
return InvalidParameter;
return GdipTranslateMatrix(graphics->worldtrans, dx, dy, order);
}
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