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Sweden-Number/dlls/gdi/enhmfdrv/graphics.c

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/*
* Enhanced MetaFile driver graphics functions
*
* Copyright 1999 Huw D M Davies
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include "gdi.h"
#include "enhmfdrv/enhmetafiledrv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(enhmetafile);
/**********************************************************************
* EMFDRV_MoveTo
*/
BOOL
EMFDRV_MoveTo(PHYSDEV dev, INT x, INT y)
{
EMRMOVETOEX emr;
emr.emr.iType = EMR_MOVETOEX;
emr.emr.nSize = sizeof(emr);
emr.ptl.x = x;
emr.ptl.y = y;
return EMFDRV_WriteRecord( dev, &emr.emr );
}
/***********************************************************************
* EMFDRV_LineTo
*/
BOOL
EMFDRV_LineTo( PHYSDEV dev, INT x, INT y )
{
EMRLINETO emr;
RECTL bounds;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
DC *dc = physDev->dc;
emr.emr.iType = EMR_LINETO;
emr.emr.nSize = sizeof(emr);
emr.ptl.x = x;
emr.ptl.y = y;
if(!EMFDRV_WriteRecord( dev, &emr.emr ))
return FALSE;
bounds.left = min(x, dc->CursPosX);
bounds.top = min(y, dc->CursPosY);
bounds.right = max(x, dc->CursPosX);
bounds.bottom = max(y, dc->CursPosY);
EMFDRV_UpdateBBox( dev, &bounds );
return TRUE;
}
/***********************************************************************
* EMFDRV_ArcChordPie
*/
static BOOL
EMFDRV_ArcChordPie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend, DWORD iType )
{
INT temp, xCentre, yCentre, i;
double angleStart, angleEnd;
double xinterStart, yinterStart, xinterEnd, yinterEnd;
EMRARC emr;
RECTL bounds;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
DC *dc = physDev->dc;
if(left == right || top == bottom) return FALSE;
if(left > right) {temp = left; left = right; right = temp;}
if(top > bottom) {temp = top; top = bottom; bottom = temp;}
if(dc->GraphicsMode == GM_COMPATIBLE) {
right--;
bottom--;
}
emr.emr.iType = iType;
emr.emr.nSize = sizeof(emr);
emr.rclBox.left = left;
emr.rclBox.top = top;
emr.rclBox.right = right;
emr.rclBox.bottom = bottom;
emr.ptlStart.x = xstart;
emr.ptlStart.y = ystart;
emr.ptlEnd.x = xend;
emr.ptlEnd.x = yend;
/* Now calculate the BBox */
xCentre = (left + right + 1) / 2;
yCentre = (top + bottom + 1) / 2;
xstart -= xCentre;
ystart -= yCentre;
xend -= xCentre;
yend -= yCentre;
/* invert y co-ords to get angle anti-clockwise from x-axis */
angleStart = atan2( -(double)ystart, (double)xstart);
angleEnd = atan2( -(double)yend, (double)xend);
/* These are the intercepts of the start/end lines with the arc */
xinterStart = (right - left + 1)/2 * cos(angleStart) + xCentre;
yinterStart = -(bottom - top + 1)/2 * sin(angleStart) + yCentre;
xinterEnd = (right - left + 1)/2 * cos(angleEnd) + xCentre;
yinterEnd = -(bottom - top + 1)/2 * sin(angleEnd) + yCentre;
if(angleStart < 0) angleStart += 2 * M_PI;
if(angleEnd < 0) angleEnd += 2 * M_PI;
if(angleEnd < angleStart) angleEnd += 2 * M_PI;
bounds.left = min(xinterStart, xinterEnd);
bounds.top = min(yinterStart, yinterEnd);
bounds.right = max(xinterStart, xinterEnd);
bounds.bottom = max(yinterStart, yinterEnd);
for(i = 0; i <= 8; i++) {
if(i * M_PI / 2 < angleStart) /* loop until we're past start */
continue;
if(i * M_PI / 2 > angleEnd) /* if we're past end we're finished */
break;
/* the arc touches the rectangle at the start of quadrant i, so adjust
BBox to reflect this. */
switch(i % 4) {
case 0:
bounds.right = right;
break;
case 1:
bounds.top = top;
break;
case 2:
bounds.left = left;
break;
case 3:
bounds.bottom = bottom;
break;
}
}
/* If we're drawing a pie then make sure we include the centre */
if(iType == EMR_PIE) {
if(bounds.left > xCentre) bounds.left = xCentre;
else if(bounds.right < xCentre) bounds.right = xCentre;
if(bounds.top > yCentre) bounds.top = yCentre;
else if(bounds.bottom < yCentre) bounds.right = yCentre;
}
if(!EMFDRV_WriteRecord( dev, &emr.emr ))
return FALSE;
EMFDRV_UpdateBBox( dev, &bounds );
return TRUE;
}
/***********************************************************************
* EMFDRV_Arc
*/
BOOL
EMFDRV_Arc( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return EMFDRV_ArcChordPie( dev, left, top, right, bottom, xstart, ystart,
xend, yend, EMR_ARC );
}
/***********************************************************************
* EMFDRV_Pie
*/
BOOL
EMFDRV_Pie( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return EMFDRV_ArcChordPie( dev, left, top, right, bottom, xstart, ystart,
xend, yend, EMR_PIE );
}
/***********************************************************************
* EMFDRV_Chord
*/
BOOL
EMFDRV_Chord( PHYSDEV dev, INT left, INT top, INT right, INT bottom,
INT xstart, INT ystart, INT xend, INT yend )
{
return EMFDRV_ArcChordPie( dev, left, top, right, bottom, xstart, ystart,
xend, yend, EMR_CHORD );
}
/***********************************************************************
* EMFDRV_Ellipse
*/
BOOL
EMFDRV_Ellipse( PHYSDEV dev, INT left, INT top, INT right, INT bottom )
{
EMRELLIPSE emr;
INT temp;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
DC *dc = physDev->dc;
TRACE("%d,%d - %d,%d\n", left, top, right, bottom);
if(left == right || top == bottom) return FALSE;
if(left > right) {temp = left; left = right; right = temp;}
if(top > bottom) {temp = top; top = bottom; bottom = temp;}
if(dc->GraphicsMode == GM_COMPATIBLE) {
right--;
bottom--;
}
emr.emr.iType = EMR_ELLIPSE;
emr.emr.nSize = sizeof(emr);
emr.rclBox.left = left;
emr.rclBox.top = top;
emr.rclBox.right = right;
emr.rclBox.bottom = bottom;
EMFDRV_UpdateBBox( dev, &emr.rclBox );
return EMFDRV_WriteRecord( dev, &emr.emr );
}
/***********************************************************************
* EMFDRV_Rectangle
*/
BOOL
EMFDRV_Rectangle(PHYSDEV dev, INT left, INT top, INT right, INT bottom)
{
EMRRECTANGLE emr;
INT temp;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
DC *dc = physDev->dc;
TRACE("%d,%d - %d,%d\n", left, top, right, bottom);
if(left == right || top == bottom) return FALSE;
if(left > right) {temp = left; left = right; right = temp;}
if(top > bottom) {temp = top; top = bottom; bottom = temp;}
if(dc->GraphicsMode == GM_COMPATIBLE) {
right--;
bottom--;
}
emr.emr.iType = EMR_RECTANGLE;
emr.emr.nSize = sizeof(emr);
emr.rclBox.left = left;
emr.rclBox.top = top;
emr.rclBox.right = right;
emr.rclBox.bottom = bottom;
EMFDRV_UpdateBBox( dev, &emr.rclBox );
return EMFDRV_WriteRecord( dev, &emr.emr );
}
/***********************************************************************
* EMFDRV_RoundRect
*/
BOOL
EMFDRV_RoundRect( PHYSDEV dev, INT left, INT top, INT right,
INT bottom, INT ell_width, INT ell_height )
{
EMRROUNDRECT emr;
INT temp;
EMFDRV_PDEVICE *physDev = (EMFDRV_PDEVICE *)dev;
DC *dc = physDev->dc;
if(left == right || top == bottom) return FALSE;
if(left > right) {temp = left; left = right; right = temp;}
if(top > bottom) {temp = top; top = bottom; bottom = temp;}
if(dc->GraphicsMode == GM_COMPATIBLE) {
right--;
bottom--;
}
emr.emr.iType = EMR_ROUNDRECT;
emr.emr.nSize = sizeof(emr);
emr.rclBox.left = left;
emr.rclBox.top = top;
emr.rclBox.right = right;
emr.rclBox.bottom = bottom;
emr.szlCorner.cx = ell_width;
emr.szlCorner.cy = ell_height;
EMFDRV_UpdateBBox( dev, &emr.rclBox );
return EMFDRV_WriteRecord( dev, &emr.emr );
}
/***********************************************************************
* EMFDRV_SetPixel
*/
COLORREF
EMFDRV_SetPixel( PHYSDEV dev, INT x, INT y, COLORREF color )
{
return TRUE;
}
/**********************************************************************
* EMFDRV_Polylinegon
*
* Helper for EMFDRV_Poly{line|gon}
*/
static BOOL
EMFDRV_Polylinegon( PHYSDEV dev, const POINT* pt, INT count, DWORD iType )
{
EMRPOLYLINE *emr;
DWORD size;
INT i;
BOOL ret;
size = sizeof(EMRPOLYLINE) + sizeof(POINTL) * (count - 1);
emr = HeapAlloc( GetProcessHeap(), 0, size );
emr->emr.iType = iType;
emr->emr.nSize = size;
emr->rclBounds.left = emr->rclBounds.right = pt[0].x;
emr->rclBounds.top = emr->rclBounds.bottom = pt[0].y;
for(i = 1; i < count; i++) {
if(pt[i].x < emr->rclBounds.left)
emr->rclBounds.left = pt[i].x;
else if(pt[i].x > emr->rclBounds.right)
emr->rclBounds.right = pt[i].x;
if(pt[i].y < emr->rclBounds.top)
emr->rclBounds.top = pt[i].y;
else if(pt[i].y > emr->rclBounds.bottom)
emr->rclBounds.bottom = pt[i].y;
}
emr->cptl = count;
memcpy(emr->aptl, pt, count * sizeof(POINTL));
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/**********************************************************************
* EMFDRV_Polyline
*/
BOOL
EMFDRV_Polyline( PHYSDEV dev, const POINT* pt, INT count )
{
return EMFDRV_Polylinegon( dev, pt, count, EMR_POLYLINE );
}
/**********************************************************************
* EMFDRV_Polygon
*/
BOOL
EMFDRV_Polygon( PHYSDEV dev, const POINT* pt, INT count )
{
if(count < 2) return FALSE;
return EMFDRV_Polylinegon( dev, pt, count, EMR_POLYGON );
}
/**********************************************************************
* EMFDRV_PolyPolylinegon
*
* Helper for EMFDRV_PolyPoly{line|gon}
*/
static BOOL
EMFDRV_PolyPolylinegon( PHYSDEV dev, const POINT* pt, const INT* counts, UINT polys,
DWORD iType)
{
EMRPOLYPOLYLINE *emr;
DWORD cptl = 0, poly, size, point;
RECTL bounds;
const POINT *pts;
BOOL ret;
bounds.left = bounds.right = pt[0].x;
bounds.top = bounds.bottom = pt[0].y;
pts = pt;
for(poly = 0; poly < polys; poly++) {
cptl += counts[poly];
for(point = 0; point < counts[poly]; point++) {
if(bounds.left > pts->x) bounds.left = pts->x;
else if(bounds.right < pts->x) bounds.right = pts->x;
if(bounds.top > pts->y) bounds.top = pts->y;
else if(bounds.bottom < pts->y) bounds.bottom = pts->y;
pts++;
}
}
size = sizeof(EMRPOLYPOLYLINE) + (polys - 1) * sizeof(DWORD) +
(cptl - 1) * sizeof(POINTL);
emr = HeapAlloc( GetProcessHeap(), 0, size );
emr->emr.iType = iType;
emr->emr.nSize = size;
emr->rclBounds = bounds;
emr->nPolys = polys;
emr->cptl = cptl;
memcpy(emr->aPolyCounts, counts, polys * sizeof(DWORD));
memcpy(emr->aPolyCounts + polys, pt, cptl * sizeof(POINTL));
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/**********************************************************************
* EMFDRV_PolyPolyline
*/
BOOL
EMFDRV_PolyPolyline(PHYSDEV dev, const POINT* pt, const DWORD* counts, DWORD polys)
{
return EMFDRV_PolyPolylinegon( dev, pt, (INT *)counts, polys,
EMR_POLYPOLYLINE );
}
/**********************************************************************
* EMFDRV_PolyPolygon
*/
BOOL
EMFDRV_PolyPolygon( PHYSDEV dev, const POINT* pt, const INT* counts, UINT polys )
{
return EMFDRV_PolyPolylinegon( dev, pt, counts, polys, EMR_POLYPOLYGON );
}
/**********************************************************************
* EMFDRV_ExtFloodFill
*/
BOOL
EMFDRV_ExtFloodFill( PHYSDEV dev, INT x, INT y, COLORREF color, UINT fillType )
{
EMREXTFLOODFILL emr;
emr.emr.iType = EMR_EXTFLOODFILL;
emr.emr.nSize = sizeof(emr);
emr.ptlStart.x = x;
emr.ptlStart.y = y;
emr.crColor = color;
emr.iMode = fillType;
return EMFDRV_WriteRecord( dev, &emr.emr );
}
/*********************************************************************
* EMFDRV_FillRgn
*/
BOOL EMFDRV_FillRgn( PHYSDEV dev, HRGN hrgn, HBRUSH hbrush )
{
EMRFILLRGN *emr;
DWORD size, rgnsize, index;
BOOL ret;
index = EMFDRV_CreateBrushIndirect( dev, hbrush );
if(!index) return FALSE;
rgnsize = GetRegionData( hrgn, 0, NULL );
size = rgnsize + offsetof(EMRFILLRGN,RgnData);
emr = HeapAlloc( GetProcessHeap(), 0, size );
GetRegionData( hrgn, rgnsize, (RGNDATA *)&emr->RgnData );
emr->emr.iType = EMR_FILLRGN;
emr->emr.nSize = size;
emr->rclBounds.left = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.left;
emr->rclBounds.top = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.top;
emr->rclBounds.right = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.right - 1;
emr->rclBounds.bottom = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.bottom - 1;
emr->cbRgnData = rgnsize;
emr->ihBrush = index;
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/*********************************************************************
* EMFDRV_FrameRgn
*/
BOOL EMFDRV_FrameRgn( PHYSDEV dev, HRGN hrgn, HBRUSH hbrush, INT width, INT height )
{
EMRFRAMERGN *emr;
DWORD size, rgnsize, index;
BOOL ret;
index = EMFDRV_CreateBrushIndirect( dev, hbrush );
if(!index) return FALSE;
rgnsize = GetRegionData( hrgn, 0, NULL );
size = rgnsize + offsetof(EMRFRAMERGN,RgnData);
emr = HeapAlloc( GetProcessHeap(), 0, size );
GetRegionData( hrgn, rgnsize, (RGNDATA *)&emr->RgnData );
emr->emr.iType = EMR_FRAMERGN;
emr->emr.nSize = size;
emr->rclBounds.left = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.left;
emr->rclBounds.top = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.top;
emr->rclBounds.right = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.right - 1;
emr->rclBounds.bottom = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.bottom - 1;
emr->cbRgnData = rgnsize;
emr->ihBrush = index;
emr->szlStroke.cx = width;
emr->szlStroke.cy = height;
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/*********************************************************************
* EMFDRV_PaintInvertRgn
*
* Helper for EMFDRV_{Paint|Invert}Rgn
*/
static BOOL EMFDRV_PaintInvertRgn( PHYSDEV dev, HRGN hrgn, DWORD iType )
{
EMRINVERTRGN *emr;
DWORD size, rgnsize;
BOOL ret;
rgnsize = GetRegionData( hrgn, 0, NULL );
size = rgnsize + offsetof(EMRINVERTRGN,RgnData);
emr = HeapAlloc( GetProcessHeap(), 0, size );
GetRegionData( hrgn, rgnsize, (RGNDATA *)&emr->RgnData );
emr->emr.iType = iType;
emr->emr.nSize = size;
emr->rclBounds.left = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.left;
emr->rclBounds.top = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.top;
emr->rclBounds.right = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.right - 1;
emr->rclBounds.bottom = ((RGNDATA *)&emr->RgnData)->rdh.rcBound.bottom - 1;
emr->cbRgnData = rgnsize;
ret = EMFDRV_WriteRecord( dev, &emr->emr );
if(ret)
EMFDRV_UpdateBBox( dev, &emr->rclBounds );
HeapFree( GetProcessHeap(), 0, emr );
return ret;
}
/**********************************************************************
* EMFDRV_PaintRgn
*/
BOOL
EMFDRV_PaintRgn( PHYSDEV dev, HRGN hrgn )
{
return EMFDRV_PaintInvertRgn( dev, hrgn, EMR_PAINTRGN );
}
/**********************************************************************
* EMFDRV_InvertRgn
*/
BOOL
EMFDRV_InvertRgn( PHYSDEV dev, HRGN hrgn )
{
return EMFDRV_PaintInvertRgn( dev, hrgn, EMR_INVERTRGN );
}
/**********************************************************************
* EMFDRV_SetBkColor
*/
COLORREF
EMFDRV_SetBkColor( PHYSDEV dev, COLORREF color )
{
EMRSETBKCOLOR emr;
emr.emr.iType = EMR_SETBKCOLOR;
emr.emr.nSize = sizeof(emr);
emr.crColor = color;
return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
}
/**********************************************************************
* EMFDRV_SetTextColor
*/
COLORREF
EMFDRV_SetTextColor( PHYSDEV dev, COLORREF color )
{
EMRSETTEXTCOLOR emr;
emr.emr.iType = EMR_SETTEXTCOLOR;
emr.emr.nSize = sizeof(emr);
emr.crColor = color;
return EMFDRV_WriteRecord( dev, &emr.emr ) ? color : CLR_INVALID;
}
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