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Sweden-Number/windows/graphics.c

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/*
* GDI graphics operations
*
* Copyright 1993, 1994 Alexandre Julliard
*/
static char Copyright[] = "Copyright Alexandre Julliard, 1993, 1994";
#include <math.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Intrinsic.h>
#ifndef PI
#define PI M_PI
#endif
#include "dc.h"
#include "gdi.h"
#include "metafile.h"
#include "syscolor.h"
#include "stddebug.h"
#include "color.h"
#include "debug.h"
static __inline__ void swap_int(int *a, int *b)
{
int c;
c = *a;
*a = *b;
*b = c;
}
/***********************************************************************
* LineTo (GDI.19)
*/
BOOL LineTo( HDC hdc, short x, short y )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam2(dc, META_LINETO, x, y);
return TRUE;
}
if (DC_SetupGCForPen( dc ))
XDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + XLPTODP( dc, dc->w.CursPosX ),
dc->w.DCOrgY + YLPTODP( dc, dc->w.CursPosY ),
dc->w.DCOrgX + XLPTODP( dc, x ),
dc->w.DCOrgY + YLPTODP( dc, y ) );
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* MoveTo (GDI.20)
*/
DWORD MoveTo( HDC hdc, short x, short y )
{
short oldx, oldy;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam2(dc, META_MOVETO, x, y);
return 0;
}
oldx = dc->w.CursPosX;
oldy = dc->w.CursPosY;
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return oldx | (oldy << 16);
}
/***********************************************************************
* MoveToEx (GDI.483)
*/
BOOL MoveToEx( HDC hdc, short x, short y, LPPOINT pt )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
if (pt)
{
pt->x = dc->w.CursPosX;
pt->y = dc->w.CursPosY;
}
dc->w.CursPosX = x;
dc->w.CursPosY = y;
return TRUE;
}
/***********************************************************************
* GRAPH_DrawArc
*
* Helper functions for Arc(), Chord() and Pie().
* 'lines' is the number of lines to draw: 0 for Arc, 1 for Chord, 2 for Pie.
*/
static BOOL GRAPH_DrawArc( HDC hdc, int left, int top, int right, int bottom,
int xstart, int ystart, int xend, int yend, int lines )
{
int xcenter, ycenter, istart_angle, idiff_angle;
double start_angle, end_angle;
XPoint points[3];
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
switch (lines)
{
case 0:
MF_MetaParam8(dc, META_ARC, left, top, right, bottom,
xstart, ystart, xend, yend);
break;
case 1:
MF_MetaParam8(dc, META_CHORD, left, top, right, bottom,
xstart, ystart, xend, yend);
break;
case 2:
MF_MetaParam8(dc, META_PIE, left, top, right, bottom,
xstart, ystart, xend, yend);
break;
}
return 0;
}
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
xstart = XLPTODP( dc, xstart );
ystart = YLPTODP( dc, ystart );
xend = XLPTODP( dc, xend );
yend = YLPTODP( dc, yend );
if ((left == right) || (top == bottom)) return FALSE;
xcenter = (right + left) / 2;
ycenter = (bottom + top) / 2;
start_angle = atan2( (double)(ycenter-ystart)*(right-left),
(double)(xstart-xcenter)*(bottom-top) );
end_angle = atan2( (double)(ycenter-yend)*(right-left),
(double)(xend-xcenter)*(bottom-top) );
istart_angle = (int)(start_angle * 180 * 64 / PI);
idiff_angle = (int)((end_angle - start_angle) * 180 * 64 / PI );
if (idiff_angle <= 0) idiff_angle += 360 * 64;
if (left > right) swap_int( &left, &right );
if (top > bottom) swap_int( &top, &bottom );
/* Fill arc with brush if Chord() or Pie() */
if ((lines > 0) && DC_SetupGCForBrush( dc ))
{
XSetArcMode( display, dc->u.x.gc, (lines==1) ? ArcChord : ArcPieSlice);
XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, istart_angle, idiff_angle );
}
/* Draw arc and lines */
if (!DC_SetupGCForPen( dc )) return TRUE;
XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, istart_angle, idiff_angle );
if (!lines) return TRUE;
points[0].x = dc->w.DCOrgX + xcenter + (int)(cos(start_angle) * (right-left) / 2);
points[0].y = dc->w.DCOrgY + ycenter - (int)(sin(start_angle) * (bottom-top) / 2);
points[1].x = dc->w.DCOrgX + xcenter + (int)(cos(end_angle) * (right-left) / 2);
points[1].y = dc->w.DCOrgY + ycenter - (int)(sin(end_angle) * (bottom-top) / 2);
if (lines == 2)
{
points[2] = points[1];
points[1].x = dc->w.DCOrgX + xcenter;
points[1].y = dc->w.DCOrgY + ycenter;
}
XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, lines+1, CoordModeOrigin );
return TRUE;
}
/***********************************************************************
* Arc (GDI.23)
*/
BOOL Arc( HDC hdc, int left, int top, int right, int bottom,
int xstart, int ystart, int xend, int yend )
{
return GRAPH_DrawArc( hdc, left, top, right, bottom,
xstart, ystart, xend, yend, 0 );
}
/***********************************************************************
* Pie (GDI.26)
*/
BOOL Pie( HDC hdc, int left, int top, int right, int bottom,
int xstart, int ystart, int xend, int yend )
{
return GRAPH_DrawArc( hdc, left, top, right, bottom,
xstart, ystart, xend, yend, 2 );
}
/***********************************************************************
* Chord (GDI.348)
*/
BOOL Chord( HDC hdc, int left, int top, int right, int bottom,
int xstart, int ystart, int xend, int yend )
{
return GRAPH_DrawArc( hdc, left, top, right, bottom,
xstart, ystart, xend, yend, 1 );
}
/***********************************************************************
* Ellipse (GDI.24)
*/
BOOL Ellipse( HDC hdc, int left, int top, int right, int bottom )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam4(dc, META_ELLIPSE, left, top, right, bottom);
return 0;
}
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
if ((left == right) || (top == bottom)) return FALSE;
if (right < left)
swap_int(&right, &left);
if (bottom < top)
swap_int(&bottom, &top);
if (DC_SetupGCForBrush( dc ))
XFillArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, 0, 360*64 );
if (DC_SetupGCForPen( dc ))
XDrawArc( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1, 0, 360*64 );
return TRUE;
}
/***********************************************************************
* Rectangle (GDI.27)
*/
BOOL Rectangle( HDC hdc, int left, int top, int right, int bottom )
{
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam4(dc, META_RECTANGLE, left, top, right, bottom);
return TRUE;
}
left = XLPTODP( dc, left );
top = YLPTODP( dc, top );
right = XLPTODP( dc, right );
bottom = YLPTODP( dc, bottom );
if (right < left)
swap_int(&right, &left);
if (bottom < top)
swap_int(&bottom, &top);
if ((left == right) || (top == bottom)) {
if (DC_SetupGCForPen( dc ))
XDrawLine(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left,
dc->w.DCOrgY + top,
dc->w.DCOrgX + right,
dc->w.DCOrgY + bottom);
return TRUE;
}
if (DC_SetupGCForBrush( dc ))
XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left, bottom-top );
if (DC_SetupGCForPen( dc ))
XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1 );
return TRUE;
}
/***********************************************************************
* RoundRect (GDI.28)
*/
BOOL RoundRect( HDC hDC, short left, short top, short right, short bottom,
short ell_width, short ell_height)
{
int x1, y1, x2, y2;
DC * dc = (DC *) GDI_GetObjPtr(hDC, DC_MAGIC);
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hDC, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam6(dc, META_ROUNDRECT, left, top, right, bottom,
ell_width, ell_height);
return TRUE;
}
dprintf_graphics(stddeb, "RoundRect(%d %d %d %d %d %d\n",
left, top, right, bottom, ell_width, ell_height);
x1 = XLPTODP(dc, left);
y1 = YLPTODP(dc, top);
x2 = XLPTODP(dc, right - ell_width);
y2 = YLPTODP(dc, bottom - ell_height);
if (DC_SetupGCForBrush(dc)) {
XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x1, dc->w.DCOrgY + y1,
ell_width, ell_height, 90 * 64, 90 * 64);
XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x1, dc->w.DCOrgY + y2,
ell_width, ell_height, 180 * 64, 90 * 64);
XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x2, dc->w.DCOrgY + y2,
ell_width, ell_height, 270 * 64, 90 * 64);
XFillArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x2, dc->w.DCOrgY + y1,
ell_width, ell_height, 0, 90 * 64);
ell_width /= 2; ell_height /= 2;
XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left + ell_width, dc->w.DCOrgY + top,
right - left - 2 * ell_width, bottom - top);
XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top + ell_height,
ell_width, bottom - top - 2 * ell_height);
XFillRectangle(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + right - ell_width, dc->w.DCOrgY + top + ell_height,
ell_width, bottom - top - 2 * ell_height);
ell_width *= 2; ell_height *= 2;
}
if (DC_SetupGCForPen(dc)) {
XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x1, dc->w.DCOrgY + y1,
ell_width, ell_height, 90 * 64, 90 * 64);
XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x1, dc->w.DCOrgY + y2,
ell_width, ell_height, 180 * 64, 90 * 64);
XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x2, dc->w.DCOrgY + y2,
ell_width, ell_height, 270 * 64, 90 * 64);
XDrawArc(display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + x2, dc->w.DCOrgY + y1,
ell_width, ell_height, 0, 90 * 64);
}
ell_width /= 2; ell_height /= 2;
MoveTo(hDC, left, top + ell_height);
LineTo(hDC, left, bottom - ell_height);
MoveTo(hDC, left + ell_width, bottom);
LineTo(hDC, right - ell_width, bottom);
MoveTo(hDC, right, bottom - ell_height);
LineTo(hDC, right, top + ell_height);
MoveTo(hDC, right - ell_width, top);
LineTo(hDC, left + ell_width, top);
return TRUE;
}
/***********************************************************************
* FillRect (USER.81)
*/
int FillRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
{
HBRUSH prevBrush;
if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top, PATCOPY );
SelectObject( hdc, prevBrush );
return 1;
}
/***********************************************************************
* InvertRect (USER.82)
*/
void InvertRect( HDC hdc, LPRECT rect )
{
if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return;
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, rect->bottom - rect->top, DSTINVERT );
}
/***********************************************************************
* FrameRect (USER.83)
*/
int FrameRect( HDC hdc, LPRECT rect, HBRUSH hbrush )
{
HBRUSH prevBrush;
int left, top, right, bottom;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
if ((rect->right <= rect->left) || (rect->bottom <= rect->top)) return 0;
if (!(prevBrush = SelectObject( hdc, hbrush ))) return 0;
left = XLPTODP( dc, rect->left );
top = YLPTODP( dc, rect->top );
right = XLPTODP( dc, rect->right );
bottom = YLPTODP( dc, rect->bottom );
if (DC_SetupGCForBrush( dc )) {
PatBlt( hdc, rect->left, rect->top, 1,
rect->bottom - rect->top, PATCOPY );
PatBlt( hdc, rect->right - 1, rect->top, 1,
rect->bottom - rect->top, PATCOPY );
PatBlt( hdc, rect->left, rect->top,
rect->right - rect->left, 1, PATCOPY );
PatBlt( hdc, rect->left, rect->bottom - 1,
rect->right - rect->left, 1, PATCOPY );
}
SelectObject( hdc, prevBrush );
return 1;
}
/***********************************************************************
* SetPixel (GDI.31)
*/
COLORREF SetPixel( HDC hdc, short x, short y, COLORREF color )
{
Pixel pixel;
PALETTEENTRY entry;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
MF_MetaParam4(dc, META_SETPIXEL, x, y, HIWORD(color), LOWORD(color));
return 1;
}
x = dc->w.DCOrgX + XLPTODP( dc, x );
y = dc->w.DCOrgY + YLPTODP( dc, y );
pixel = COLOR_ToPhysical( dc, color );
XSetForeground( display, dc->u.x.gc, pixel );
XSetFunction( display, dc->u.x.gc, GXcopy );
XDrawPoint( display, dc->u.x.drawable, dc->u.x.gc, x, y );
if (screenDepth <= 8)
{
GetPaletteEntries( dc->w.hPalette, pixel, 1, &entry );
return RGB( entry.peRed, entry.peGreen, entry.peBlue );
}
else return (COLORREF)pixel;
}
/***********************************************************************
* GetPixel (GDI.83)
*/
COLORREF GetPixel( HDC hdc, short x, short y )
{
PALETTEENTRY entry;
XImage * image;
WORD * mapping;
int pixel;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return 0;
#ifdef SOLITAIRE_SPEED_HACK
return 0;
#endif
if (!PtVisible( hdc, x, y )) return 0;
x = dc->w.DCOrgX + XLPTODP( dc, x );
y = dc->w.DCOrgY + YLPTODP( dc, y );
#if 0
if ((x < 0) || (y < 0)) return 0;
if (!(dc->w.flags & DC_MEMORY))
{
XWindowAttributes win_attr;
if (!XGetWindowAttributes( display, dc->u.x.drawable, &win_attr ))
return 0;
if (win_attr.map_state != IsViewable) return 0;
if ((x >= win_attr.width) || (y >= win_attr.height)) return 0;
}
#endif
image = XGetImage( display, dc->u.x.drawable, x, y,
1, 1, AllPlanes, ZPixmap );
pixel = XGetPixel( image, 0, 0 );
XDestroyImage( image );
if (screenDepth > 8) return pixel;
mapping = (WORD *) GDI_HEAP_ADDR( dc->u.x.pal.hRevMapping );
if (mapping) pixel = mapping[pixel];
GetPaletteEntries( dc->w.hPalette, pixel, 1, &entry );
return RGB( entry.peRed, entry.peGreen, entry.peBlue );
}
/***********************************************************************
* PaintRgn (GDI.43)
*/
BOOL PaintRgn( HDC hdc, HRGN hrgn )
{
RECT box;
HRGN tmpVisRgn, prevVisRgn;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return FALSE;
/* Modify visible region */
if (!(prevVisRgn = SaveVisRgn( hdc ))) return FALSE;
if (!(tmpVisRgn = CreateRectRgn( 0, 0, 0, 0 )))
{
RestoreVisRgn( hdc );
return FALSE;
}
CombineRgn( tmpVisRgn, prevVisRgn, hrgn, RGN_AND );
SelectVisRgn( hdc, tmpVisRgn );
DeleteObject( tmpVisRgn );
/* Fill the region */
GetClipBox( hdc, &box );
if (DC_SetupGCForBrush( dc ))
XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + box.left, dc->w.DCOrgY + box.top,
box.right-box.left, box.bottom-box.top );
/* Restore the visible region */
RestoreVisRgn( hdc );
return TRUE;
}
/***********************************************************************
* FillRgn (GDI.40)
*/
BOOL FillRgn( HDC hdc, HRGN hrgn, HBRUSH hbrush )
{
BOOL retval;
HBRUSH prevBrush = SelectObject( hdc, hbrush );
if (!prevBrush) return FALSE;
retval = PaintRgn( hdc, hrgn );
SelectObject( hdc, prevBrush );
return retval;
}
/***********************************************************************
* InvertRgn (GDI.42)
*/
BOOL InvertRgn( HDC hdc, HRGN hrgn )
{
HBRUSH prevBrush = SelectObject( hdc, GetStockObject(BLACK_BRUSH) );
WORD prevROP = SetROP2( hdc, R2_NOT );
BOOL retval = PaintRgn( hdc, hrgn );
SelectObject( hdc, prevBrush );
SetROP2( hdc, prevROP );
return retval;
}
/***********************************************************************
* DrawFocusRect (USER.466)
*/
void DrawFocusRect( HDC hdc, LPRECT rc )
{
HPEN hOldPen;
int oldDrawMode, oldBkMode;
int left, top, right, bottom;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc) return;
left = XLPTODP( dc, rc->left );
top = YLPTODP( dc, rc->top );
right = XLPTODP( dc, rc->right );
bottom = YLPTODP( dc, rc->bottom );
hOldPen = (HPEN)SelectObject(hdc, sysColorObjects.hpenWindowText );
oldDrawMode = SetROP2(hdc, R2_XORPEN);
oldBkMode = SetBkMode(hdc, TRANSPARENT);
if (DC_SetupGCForPen( dc ))
XDrawRectangle( display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + left, dc->w.DCOrgY + top,
right-left-1, bottom-top-1 );
SetBkMode(hdc, oldBkMode);
SetROP2(hdc, oldDrawMode);
SelectObject(hdc, (HANDLE)hOldPen);
}
/**********************************************************************
* GRAPH_DrawBitmap
*
* Short-cut function to blit a bitmap into a device.
* Faster than CreateCompatibleDC() + SelectBitmap() + BitBlt() + DeleteDC().
*/
BOOL GRAPH_DrawBitmap( HDC hdc, HBITMAP hbitmap, int xdest, int ydest,
int xsrc, int ysrc, int width, int height, int rop )
{
XGCValues val;
BITMAPOBJ *bmp;
DC *dc;
if (!(dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC ))) return FALSE;
if (!(bmp = (BITMAPOBJ *) GDI_GetObjPtr( hbitmap, BITMAP_MAGIC )))
return FALSE;
val.function = DC_XROPfunction[(rop >> 16) & 0x0f];
val.foreground = dc->w.textPixel;
val.background = dc->w.backgroundPixel;
XChangeGC(display, dc->u.x.gc, GCFunction|GCForeground|GCBackground, &val);
if (bmp->bitmap.bmBitsPixel == 1)
{
XCopyPlane( display, bmp->pixmap, dc->u.x.drawable, dc->u.x.gc,
xsrc, ysrc, width, height,
dc->w.DCOrgX + xdest, dc->w.DCOrgY + ydest, 1 );
return TRUE;
}
else if (bmp->bitmap.bmBitsPixel == dc->w.bitsPerPixel)
{
XCopyArea( display, bmp->pixmap, dc->u.x.drawable, dc->u.x.gc,
xsrc, ysrc, width, height,
dc->w.DCOrgX + xdest, dc->w.DCOrgY + ydest );
return TRUE;
}
else return FALSE;
}
/**********************************************************************
* GRAPH_DrawReliefRect (Not a MSWin Call)
*/
void GRAPH_DrawReliefRect( HDC hdc, RECT *rect, int highlight_size,
int shadow_size, BOOL pressed )
{
HBRUSH hbrushOld;
int i;
hbrushOld = SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnShadow :
sysColorObjects.hbrushBtnHighlight );
for (i = 0; i < highlight_size; i++)
{
PatBlt( hdc, rect->left + i, rect->top,
1, rect->bottom - rect->top - i, PATCOPY );
PatBlt( hdc, rect->left, rect->top + i,
rect->right - rect->left - i, 1, PATCOPY );
}
SelectObject( hdc, pressed ? sysColorObjects.hbrushBtnHighlight :
sysColorObjects.hbrushBtnShadow );
for (i = 0; i < shadow_size; i++)
{
PatBlt( hdc, rect->right - i - 1, rect->top + i,
1, rect->bottom - rect->top - i, PATCOPY );
PatBlt( hdc, rect->left + i, rect->bottom - i - 1,
rect->right - rect->left - i, 1, PATCOPY );
}
SelectObject( hdc, hbrushOld );
}
/**********************************************************************
* Polyline (GDI.37)
*/
BOOL Polyline (HDC hdc, LPPOINT pt, int count)
{
register int i;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaPoly(dc, META_POLYLINE, pt, count);
return TRUE;
}
if (DC_SetupGCForPen( dc ))
{
for (i = 0; i < count-1; i ++)
XDrawLine (display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + XLPTODP(dc, pt [i].x),
dc->w.DCOrgY + YLPTODP(dc, pt [i].y),
dc->w.DCOrgX + XLPTODP(dc, pt [i+1].x),
dc->w.DCOrgY + YLPTODP(dc, pt [i+1].y));
XDrawLine (display, dc->u.x.drawable, dc->u.x.gc,
dc->w.DCOrgX + XLPTODP(dc, pt [count-1].x),
dc->w.DCOrgY + YLPTODP(dc, pt [count-1].y),
dc->w.DCOrgX + XLPTODP(dc, pt [0].x),
dc->w.DCOrgY + YLPTODP(dc, pt [0].y));
}
return (TRUE);
}
/**********************************************************************
* Polygon (GDI.36)
*/
BOOL Polygon (HDC hdc, LPPOINT pt, int count)
{
register int i;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
XPoint *points = (XPoint *) malloc (sizeof (XPoint) * (count+1));
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaPoly(dc, META_POLYGON, pt, count);
return TRUE;
}
for (i = 0; i < count; i++)
{
points[i].x = dc->w.DCOrgX + XLPTODP( dc, pt[i].x );
points[i].y = dc->w.DCOrgY + YLPTODP( dc, pt[i].y );
}
points[count] = points[0];
if (DC_SetupGCForBrush( dc ))
XFillPolygon( display, dc->u.x.drawable, dc->u.x.gc,
points, count+1, Complex, CoordModeOrigin);
if (DC_SetupGCForPen ( dc ))
XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, count+1, CoordModeOrigin );
free( points );
return TRUE;
}
/**********************************************************************
* PolyPolygon (GDI.450)
*/
BOOL PolyPolygon( HDC hdc, LPPOINT pt, LPINT counts, WORD polygons )
{
HRGN hrgn;
DC * dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
/* MF_MetaPoly(dc, META_POLYGON, pt, count); */
return TRUE;
}
/* The points should be converted to device coords before */
/* creating the region. But as CreatePolyPolygonRgn is not */
/* really correct either, it doesn't matter much... */
/* At least the outline will be correct :-) */
hrgn = CreatePolyPolygonRgn( pt, counts, polygons, dc->w.polyFillMode );
PaintRgn( hdc, hrgn );
DeleteObject( hrgn );
/* Draw the outline of the polygons */
if (DC_SetupGCForPen ( dc ))
{
int i, j, max = 0;
XPoint *points;
for (i = 0; i < polygons; i++) if (counts[i] > max) max = counts[i];
points = (XPoint *) malloc( sizeof(XPoint) * (max+1) );
for (i = 0; i < polygons; i++)
{
for (j = 0; j < counts[i]; j++)
{
points[j].x = dc->w.DCOrgX + XLPTODP( dc, pt->x );
points[j].y = dc->w.DCOrgY + YLPTODP( dc, pt->y );
pt++;
}
points[j] = points[0];
XDrawLines( display, dc->u.x.drawable, dc->u.x.gc,
points, j + 1, CoordModeOrigin );
}
free( points );
}
return TRUE;
}
/**********************************************************************
* GRAPH_InternalFloodFill
*
* Internal helper function for flood fill.
* (xorg,yorg) is the origin of the X image relative to the drawable.
* (x,y) is relative to the origin of the X image.
*/
static void GRAPH_InternalFloodFill( XImage *image, DC *dc,
int x, int y,
int xOrg, int yOrg,
Pixel pixel, WORD fillType )
{
int left, right;
#define TO_FLOOD(x,y) ((fillType == FLOODFILLBORDER) ? \
(XGetPixel(image,x,y) != pixel) : \
(XGetPixel(image,x,y) == pixel))
if (!TO_FLOOD(x,y)) return;
/* Find left and right boundaries */
left = right = x;
while ((left > 0) && TO_FLOOD( left-1, y )) left--;
while ((right < image->width) && TO_FLOOD( right, y )) right++;
XFillRectangle( display, dc->u.x.drawable, dc->u.x.gc,
xOrg + left, yOrg + y, right-left, 1 );
/* Set the pixels of this line so we don't fill it again */
for (x = left; x < right; x++)
{
if (fillType == FLOODFILLBORDER) XPutPixel( image, x, y, pixel );
else XPutPixel( image, x, y, ~pixel );
}
/* Fill the line above */
if (--y >= 0)
{
x = left;
while (x < right)
{
while ((x < right) && !TO_FLOOD(x,y)) x++;
if (x >= right) break;
while ((x < right) && TO_FLOOD(x,y)) x++;
GRAPH_InternalFloodFill( image, dc, x-1, y,
xOrg, yOrg, pixel, fillType );
}
}
/* Fill the line below */
if ((y += 2) < image->height)
{
x = left;
while (x < right)
{
while ((x < right) && !TO_FLOOD(x,y)) x++;
if (x >= right) break;
while ((x < right) && TO_FLOOD(x,y)) x++;
GRAPH_InternalFloodFill( image, dc, x-1, y,
xOrg, yOrg, pixel, fillType );
}
}
#undef TO_FLOOD
}
/**********************************************************************
* ExtFloodFill (GDI.372)
*/
BOOL ExtFloodFill( HDC hdc, INT x, INT y, COLORREF color, WORD fillType )
{
RECT rect;
Pixel pixel;
XImage *image;
DC *dc;
dprintf_graphics( stddeb, "ExtFloodFill %x %d,%d %06lx %d\n",
hdc, x, y, color, fillType );
dc = (DC *) GDI_GetObjPtr(hdc, DC_MAGIC);
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return FALSE;
MF_MetaParam4(dc, META_FLOODFILL, x, y, HIWORD(color),
LOWORD(color));
return TRUE;
}
if (!PtVisible( hdc, x, y )) return FALSE;
if (GetClipBox( hdc, &rect ) == ERROR) return FALSE;
pixel = COLOR_ToPhysical( dc, color );
if (!(image = XGetImage( display, dc->u.x.drawable,
dc->w.DCOrgX + rect.left, dc->w.DCOrgY + rect.top,
rect.right - rect.left, rect.bottom - rect.top,
AllPlanes, ZPixmap ))) return FALSE;
if (DC_SetupGCForBrush( dc ))
{
/* ROP mode is always GXcopy for flood-fill */
XSetFunction( display, dc->u.x.gc, GXcopy );
/* We can pass anything except 0 as a region */
GRAPH_InternalFloodFill( image, dc,
XLPTODP(dc,x) - rect.left,
YLPTODP(dc,y) - rect.top,
dc->w.DCOrgX + rect.left,
dc->w.DCOrgY + rect.top,
pixel, fillType );
}
XDestroyImage( image );
return TRUE;
}
/**********************************************************************
* FloodFill (GDI.25)
*/
BOOL FloodFill( HDC hdc, INT x, INT y, COLORREF color )
{
return ExtFloodFill( hdc, x, y, color, FLOODFILLBORDER );
}
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