mirror of https://github.com/lianthony/NT4.0
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
162 lines
3.9 KiB
162 lines
3.9 KiB
/****************************Module*Header******************************\
|
|
* Copyright (c) 1987 - 1991 Microsoft Corporation *
|
|
\***********************************************************************/
|
|
/********************************************************
|
|
* *
|
|
* file: EraserDP.c *
|
|
* system: PC Paintbrush for MS-Windows *
|
|
* descr: eraser draw proc *
|
|
* date: 04/01/87 @ 10:10 *
|
|
********************************************************/
|
|
|
|
#include <windows.h>
|
|
#include <port1632.h>
|
|
|
|
#include "oleglue.h"
|
|
#include "pbrush.h"
|
|
|
|
extern BOOL bExchanged;
|
|
extern RECT rDirty;
|
|
|
|
static int cntr, dir, wid, hgt;
|
|
|
|
LONG APIENTRY DrawEraser(HDC dstDC, LPRECT lprBounds, WPARAM wParam)
|
|
{
|
|
int i,w2,h2;
|
|
int width;
|
|
int height;
|
|
RECT rcRect;
|
|
|
|
if(01&cntr++)
|
|
return(FALSE);
|
|
|
|
XorCsr(dstDC, csrPt, BOXcsr);
|
|
csrPt.x = lprBounds->right;
|
|
csrPt.y = lprBounds->bottom;
|
|
|
|
ConstrainBrush(lprBounds, wParam, &dir);
|
|
|
|
// MSetWindowOrg(dstDC, wid>>1, hgt>>1);
|
|
|
|
w2 = wid >> 1;
|
|
h2 = hgt >> 1;
|
|
|
|
PolyTo(*((LPPOINT)lprBounds), *((LPPOINT)lprBounds+1), wid, hgt);
|
|
|
|
for (i=0;i<6;i++) {
|
|
polyPts[i].x += imageView.left - w2;
|
|
polyPts[i].y += imageView.top - h2;
|
|
}
|
|
|
|
/* get bounding rect of polygon (ignoring pen width) */
|
|
PolyRect(polyPts, 6, &rcRect);
|
|
|
|
/* Inflate bounding box to surround the thick pen */
|
|
CompensateForPen(hdcWork, &rcRect);
|
|
|
|
width = rcRect.right - rcRect.left;
|
|
height = rcRect.bottom - rcRect.top;
|
|
|
|
Polygon(hdcWork, polyPts, 6);
|
|
|
|
BitBlt(dstDC, rcRect.left - imageView.left,
|
|
rcRect.top - imageView.top,
|
|
width, height,
|
|
hdcWork, rcRect.left, rcRect.top, SRCCOPY);
|
|
|
|
|
|
|
|
// MSetWindowOrg(dstDC, 0, 0);
|
|
|
|
lprBounds->left = lprBounds->right;
|
|
lprBounds->top = lprBounds->bottom;
|
|
|
|
XorCsr(dstDC, csrPt, BOXcsr);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
void EraserDP(HWND hWnd, UINT code, WPARAM wParam, LONG lParam)
|
|
{
|
|
HBRUSH brush, hOldBrush;
|
|
LPPAINTSTRUCT lpps;
|
|
RECT rcReturn;
|
|
HDC paintDC;
|
|
POINT newPt;
|
|
|
|
LONG2POINT(lParam,newPt);
|
|
|
|
switch (code) {
|
|
case WM_PAINT:
|
|
lpps = (LPPAINTSTRUCT) lParam;
|
|
XorCsr(lpps->hdc, csrPt, BOXcsr);
|
|
break;
|
|
|
|
case WM_HIDECURSOR:
|
|
case WM_TERMINATE:
|
|
HideCsr(NULL, hWnd, BOXcsr);
|
|
csrPt.x = csrPt.y = -1;
|
|
SetCursorOn();
|
|
break;
|
|
|
|
case WM_SHOWCURSOR:
|
|
csrPt.x = csrPt.y = -1;
|
|
SetCursorOff();
|
|
break;
|
|
|
|
/* setup drawing environment */
|
|
case WM_LBUTTONDOWN:
|
|
cntr = 0;
|
|
dir = 0;
|
|
rcReturn.left = rcReturn.right = newPt.x;
|
|
rcReturn.top = rcReturn.bottom = newPt.y;
|
|
GetAspct(-((theSize + 1) << 2), &wid, &hgt);
|
|
|
|
if(!(paintDC = GetDisplayDC(hWnd)))
|
|
goto Error1;
|
|
|
|
if(!(brush = CreateSolidBrush(rgbColor[theBackg])))
|
|
goto Error2;
|
|
hOldBrush = SelectObject(hdcWork, brush);
|
|
SelectObject(hdcWork, GetStockObject(NULL_PEN));
|
|
|
|
if(bExchanged)
|
|
{
|
|
PasteDownRect(rDirty.left, rDirty.top,
|
|
rDirty.right-rDirty.left, rDirty.bottom-rDirty.top);
|
|
}
|
|
|
|
code = TrackTool(hWnd, DrawEraser, &rcReturn, &wParam, paintDC);
|
|
|
|
XorCsr(paintDC, csrPt, BOXcsr);
|
|
theBounds.left += imageView.left - (wid>>1);
|
|
theBounds.top += imageView.top - (hgt>>1);
|
|
theBounds.right += imageView.left + (wid>>1);
|
|
theBounds.bottom += imageView.top + (hgt>>1);
|
|
|
|
UnionWithRect(&rDirty, &theBounds);
|
|
|
|
AdviseDataChange();
|
|
|
|
XorCsr(paintDC, csrPt, BOXcsr);
|
|
|
|
if (hOldBrush)
|
|
SelectObject(hdcWork, hOldBrush);
|
|
DeleteObject(brush);
|
|
Error2:
|
|
ReleaseDC(hWnd, paintDC);
|
|
Error1:
|
|
break;
|
|
|
|
case WM_MOUSEMOVE:
|
|
if(!(paintDC = GetDisplayDC(hWnd)))
|
|
return;
|
|
XorCsr(paintDC, csrPt, BOXcsr);
|
|
XorCsr(paintDC, csrPt = newPt, BOXcsr);
|
|
ReleaseDC(hWnd, paintDC);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|