/*** $Id: painter.c,v 1.14.6.1 2006/06/16 01:15:49 xwyan Exp $**** A MiniGUI Painter.**** Copyright (C) 2001 ~ 2002 Wei Yongming** Copyright (C) 2003 ~ 2006 Feynman Software.**** Create date: 2001/11/01*//***  This source is free software; you can redistribute it and/or**  modify it under the terms of the GNU General Public**  License as published by the Free Software Foundation; either**  version 2 of the License, or (at your option) any later version.****  This software 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**  General Public License for more details.****  You should have received a copy of the GNU 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*//*** TODO:*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <signal.h>#include <time.h>#include <sys/types.h>#include <sys/wait.h>#include <math.h>#include <minigui/common.h>#include <minigui/minigui.h>#include <minigui/gdi.h>#include <minigui/window.h>#include <minigui/control.h>#ifndef _USE_NEWGAL#error "***********************************************************************"#error "** This program needs New GAL of MiniGUI!                            **"#error "** Please run `./configure --enable-newgal' when configure MiniGUI,  **"#error "** then build and reinstall MiniGUI.                                 **"#error "***********************************************************************"#else#include "painter.h"#ifndef M_PI#define M_PI        3.14159265358979323846#endif#define DEFAULT_WIDTH   800#define DEFAULT_HEIGHT  600static HMENU createpmenuabout (void){    HMENU hmnu;    MENUITEMINFO mii;    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.id          = 0;    mii.typedata    = (DWORD)"About...";    hmnu = CreatePopupMenu (&mii);        memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING ;    mii.state       = 0;    mii.id          = IDM_ABOUT_THIS;    mii.typedata    = (DWORD)"About MiniGUI Painter...";    InsertMenuItem(hmnu, 0, TRUE, &mii);    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING ;    mii.state       = 0;    mii.id          = IDM_ABOUT;    mii.typedata    = (DWORD)"About MiniGUI...";    InsertMenuItem(hmnu, 1, TRUE, &mii);    return hmnu;}static HMENU createpmenufile (void){    HMENU hmnu;    MENUITEMINFO mii;    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.id          = 0;    mii.typedata    = (DWORD)"File";    hmnu = CreatePopupMenu (&mii);        memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_NEW;    mii.typedata    = (DWORD)"New";    InsertMenuItem(hmnu, 0, TRUE, &mii);        mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_OPEN;    mii.typedata    = (DWORD)"Open...";    InsertMenuItem(hmnu, 1, TRUE, &mii);        mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_SAVE;    mii.typedata    = (DWORD)"Save";    InsertMenuItem(hmnu, 2, TRUE, &mii);        mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_SAVEAS;    mii.typedata    = (DWORD)"Save As...";    InsertMenuItem(hmnu, 3, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_CLOSE;    mii.typedata    = (DWORD)"Close";    InsertMenuItem(hmnu, 4, TRUE, &mii);        mii.type        = MFT_SEPARATOR;    mii.state       = 0;    mii.id          = 0;    mii.typedata    = 0;    InsertMenuItem(hmnu, 5, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_EXIT;    mii.typedata    = (DWORD)"Exit";    InsertMenuItem(hmnu, 6, TRUE, &mii);    return hmnu;}static HMENU createpmenuedit (void){    HMENU hmnu;    MENUITEMINFO mii;    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.id          = 0;    mii.typedata    = (DWORD)"Edit";    hmnu = CreatePopupMenu (&mii);        mii.type        = MFT_STRING ;    mii.state       = 0;    mii.id          = IDM_COPY;    mii.typedata    = (DWORD)"Copy Screen";    InsertMenuItem(hmnu, 0, TRUE, &mii);         mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_PASTE;    mii.typedata    = (DWORD)"Paste";    InsertMenuItem(hmnu, 1, TRUE, &mii);          return hmnu;}static HMENU createpmenuobject (void){    HMENU hmnu;    MENUITEMINFO mii;    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.id          = 0;    mii.typedata    = (DWORD)"Drawing Object";    hmnu = CreatePopupMenu (&mii);        mii.type        = MFT_STRING;    mii.state       = MF_CHECKED;    mii.id          = IDM_LINE;    mii.typedata    = (DWORD)"Line";    InsertMenuItem(hmnu, 0, TRUE, &mii);         mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_ELLIPSE;    mii.typedata    = (DWORD)"Circle/Ellipse";    InsertMenuItem(hmnu, 1, TRUE, &mii);         mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_RECT;    mii.typedata    = (DWORD)"Rectangle";    InsertMenuItem(hmnu, 2, TRUE, &mii);         mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_ARC;    mii.typedata    = (DWORD)"CircleArc";    InsertMenuItem(hmnu, 3, TRUE, &mii);         mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_SPLINE;    mii.typedata    = (DWORD)"Spline";    InsertMenuItem(hmnu, 4, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_FILLED_RECT;    mii.typedata    = (DWORD)"Filled Rectangle";    InsertMenuItem(hmnu, 5, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_FILLED_ELLIPSE;    mii.typedata    = (DWORD)"Filled Circle/Ellipse";    InsertMenuItem(hmnu, 6, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_FILLED_POLYGON;    mii.typedata    = (DWORD)"Filled Polygon";    InsertMenuItem(hmnu, 7, TRUE, &mii);    mii.type        = MFT_STRING;    mii.state       = 0;    mii.id          = IDM_FLOOD_FILL;    mii.typedata    = (DWORD)"Flood Fill";    InsertMenuItem(hmnu, 8, TRUE, &mii);        return hmnu;}static HMENU createmenu (void){    HMENU hmnu;    MENUITEMINFO mii;    hmnu = CreateMenu();    memset (&mii, 0, sizeof(MENUITEMINFO));    mii.type        = MFT_STRING;    mii.id          = 100;    mii.typedata    = (DWORD)"File";    mii.hsubmenu    = createpmenufile ();    InsertMenuItem(hmnu, 0, TRUE, &mii);    mii.type        = MFT_STRING;    mii.id          = 110;    mii.typedata    = (DWORD)"Edit";    mii.hsubmenu    = createpmenuedit ();    InsertMenuItem(hmnu, 1, TRUE, &mii);        mii.type        = MFT_STRING;    mii.id          = 120;    mii.typedata    = (DWORD)"Object";    mii.hsubmenu    = createpmenuobject ();    InsertMenuItem(hmnu, 2, TRUE, &mii);        mii.type        = MFT_STRING;    mii.id          = 130;    mii.typedata    = (DWORD)"About";    mii.hsubmenu    = createpmenuabout ();    InsertMenuItem(hmnu, 3, TRUE, &mii);                       return hmnu;}#define MAX_POINTS  40static int obj_type = IDM_LINE;static POINT pts [MAX_POINTS];static int cur_pt = 0;static int oldx = -1, oldy;static void DrawObject (HDC hdc){    switch (obj_type) {    case IDM_LINE:        if (cur_pt == 2) {            MoveTo (hdc, pts[0].x, pts[0].y);            LineTo (hdc, pts[1].x, pts[1].y);            cur_pt = 0; oldx = -1;        }        break;    case IDM_ELLIPSE:        if (cur_pt == 2) {            int rx = ABS (pts[1].x - pts[0].x);            int ry = ABS (pts[1].y - pts[0].y);            if (rx == ry)                Circle (hdc, pts[0].x, pts[0].y, rx);            else                Ellipse (hdc, pts[0].x, pts[0].y, rx, ry);            cur_pt = 0; oldx = -1;        }        break;    case IDM_RECT:        if (cur_pt == 2) {            Rectangle (hdc, pts[0].x, pts[0].y, pts[1].x, pts[1].y);            cur_pt = 0; oldx = -1;        }        break;    case IDM_ARC:        if (cur_pt == 3) {            int sx = pts [0].x, sy = pts [0].y;            int dx = pts [1].x - sx, dy = pts [1].y - sy;            double r = sqrt (dx * dx + dy * dy);            double cos_d = dx * 1.0 / r;            double ang1 = acos (cos_d);            int r2;            double ang2;            int a1, a2;            if (dy > 0) {                ang1 = -ang1;            }            dx = pts [2].x - sx;            dy = pts [2].y - sy;            r2 = sqrt (dx * dx * 1.0 + dy * dy * 1.0);            cos_d = dx * 1.0 / r2;