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#include "xlisp.h"
#include "xlstat.h"
#include "wxlisp.h"
/* external variables */
extern HWND hWndFrame, hWndClient;
extern HANDLE hInst, hAccel;
/* global variables */
static char szRSZWinClass[] = "RSZWindowClass";
static int done, changed, mouseDown, brleft, brtop, brwidth, brheight;
/* function prototyles */
long CALLBACK RSZWinProc(HWND, UINT, WPARAM, LONG);
/* defines */
#define RZTOP 100
#define RZHEIGHT 100
#define RZWIDTH 200
#define RZMARGIN 10
#define RZBTNWIDTH 85
BOOL InitApplResizeBrush(HANDLE hInstance)
{
WNDCLASS wc;
/* class structure for the IVIEW window */
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = RSZWinProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = (HICON) NULL;
wc.hCursor = LoadCursor((HWND) NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1);
wc.lpszMenuName = NULL;
wc. lpszClassName = szRSZWinClass;
if (! RegisterClass(&wc)) return(FALSE);
return(TRUE);
}
int IViewGetNewBrushSize(HWND w, int *pwidth, int *pheight)
#pragma argsused pwidth pheight
{
HWND hWnd;
int scwidth, scheight, btnHeight;
int left, top, width, height;
HDC hDC;
TEXTMETRIC tm;
MSG msg;
hDC = GetDC(hWndFrame);
SelectObject(hDC, GetStockObject(SYSTEM_FIXED_FONT));
GetTextMetrics(hDC, &tm);
btnHeight = (7 * tm.tmHeight) / 4;
ReleaseDC(hWndFrame, hDC);
StGetScreenSize(&scwidth, &scheight);
width = RZWIDTH + 2 * GetSystemMetrics(SM_CXDLGFRAME);
height = RZHEIGHT + 2 * GetSystemMetrics(SM_CYDLGFRAME);
top = RZTOP;
left = (scwidth - width) / 2;
hWnd = CreateWindow(szRSZWinClass,
"Resize Brush", WS_POPUP | WS_DLGFRAME | WS_VISIBLE,
left, top, width, height, hWndFrame, 0, hInst, 0);
CreateWindow("static", "Click in this window and drag.",
WS_CHILD | SS_CENTER | WS_VISIBLE,
RZMARGIN, RZMARGIN,
RZWIDTH - RZMARGIN, RZHEIGHT - RZMARGIN,
hWnd, 0, hInst, NULL);
CreateWindow("button", "OK",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
RZMARGIN, RZHEIGHT - RZMARGIN - btnHeight,
RZBTNWIDTH, btnHeight,
hWnd, (HMENU) IDOK, hInst, NULL);
CreateWindow("button", "Cancel",
WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
2 * RZMARGIN + RZBTNWIDTH,
RZHEIGHT - RZMARGIN - btnHeight,
RZBTNWIDTH, btnHeight, hWnd, (HMENU) IDCANCEL,
hInst, NULL);
done = FALSE;
changed = FALSE;
mouseDown = FALSE;
brwidth = pwidth ? *pwidth : 10;
brheight = pheight ? *pheight : 10;
while (! done && GetMessage(&msg, hWnd, 0, 0)) {
TranslateMessage(&msg);
DispatchMessage(&msg);
}
DestroyWindow(hWnd);
if (changed) {
if (pwidth) *pwidth = (brwidth > 0) ? brwidth : -brwidth;
if (pheight) *pheight = (brheight > 0) ? brheight : -brheight;
}
return(changed);
}
static void set_brush(int x, int y, int initial)
{
if (initial) {
brleft = x;
brtop = y;
brwidth = 0;
brheight = 0;
}
else {
brwidth = x - brleft;
brheight = y - brtop;
}
}
static void draw_brush(HWND hWnd)
{
HDC hDC;
int left, top, width, height;
left = (brwidth > 0) ? brleft : brleft + brwidth;
top = (brheight > 0) ? brtop : brtop + brheight;
width = (brwidth > 0) ? brwidth : -brwidth;
height = (brheight > 0) ? brheight : -brheight;
hDC = GetDC(hWnd);
SetROP2(hDC, R2_NOT);
SelectObject(hDC, GetStockObject(NULL_BRUSH));
Rectangle(hDC, left, top, left + width, top + height);
ReleaseDC(hWnd, hDC);
}
long CALLBACK RSZWinProc(HWND hWnd, UINT message, WPARAM wParam, LONG lParam)
{
switch(message) {
case WM_COMMAND:
switch (GET_WM_COMMAND_ID(wParam, lParam)) {
case IDOK: done = TRUE; changed = TRUE; return(TRUE);
case IDCANCEL: done = TRUE; changed = FALSE; return(FALSE);
}
break;
case WM_MOUSEMOVE:
if (mouseDown) {
draw_brush(hWnd); // to erase
set_brush(LOWORD(lParam), HIWORD(lParam), FALSE);
draw_brush(hWnd); // to draw
}
return(0);
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
mouseDown = TRUE;
SetCapture(hWnd);
set_brush(LOWORD(lParam), HIWORD(lParam), TRUE);
draw_brush(hWnd);
return(0);
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
ReleaseCapture();
mouseDown = FALSE;
draw_brush(hWnd); // to erase
set_brush(LOWORD(lParam), HIWORD(lParam), FALSE);
return(0);
}
return(DefWindowProc(hWnd, message, wParam, lParam));
}
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