| | | | | | Canvas.cpp // // SYNTOPIA. See http://Syntopia.sourceforge.net for details and documentation. // // Author of this file: Mikael Hvidtfeldt Christensen (mikaelc@users.sourceforge.net) // #include "Canvas.h" namespace GUIToolkit { MCanvas::MCanvas() { myPen = 0; oldPen = 0; myBrush = 0; oldBrush = 0; } MCanvas::~MCanvas() { // Free the windowsclass allocated in PutInWinForm // with RegisterClassEx UnregisterClass(g_szClassName, GUIControl::GUIInstance->hInstance); } void MCanvas::PutInWinForm(WinForm * WF, int x0, int y0, int x1, int y1) { topWF = WF; _x0 = x0; _y0 = y0; _x1 = x1; _y1 = y1; ID = (HMENU)GUIControl::GUIInstance->Register(this); //Make a name for class. strcpy(g_szClassName,GUIControl::GUIInstance->getUniqueName().c_str()); // This handles all the standard initialization of the window. // Registering the Window Class wc.cbSize = sizeof(WNDCLASSEX); // Size of Structure wc.style = 0; wc.lpfnWndProc = GUIControl::WndProc; // WinAPI event Handler wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = GUIControl::GUIInstance->hInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); // (HBRUSH)(COLOR_WINDOW+1); wc.lpszMenuName = NULL; wc.lpszClassName = g_szClassName; wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION); // For dll compatibility wc.hIcon = 0; wc.hCursor = 0; wc.hIconSm = 0; if(!RegisterClassEx(&wc)) { LPVOID lpMsgBuf; if (!FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language (LPTSTR) &lpMsgBuf, 0, NULL )) { // Handle the error. return; } // Process any inserts in lpMsgBuf. // ... // Display the string. MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION ); // Free the buffer. LocalFree( lpMsgBuf ); MessageBox(NULL, "Window Registration Failed33!", GUIControl::GUIInstance->getUniqueName().c_str(), MB_ICONEXCLAMATION | MB_OK); // TODO: We should THROW the error } // Create the Window hLabel = CreateWindowEx( WS_EX_CLIENTEDGE, g_szClassName, "Funky", WS_CHILD | WS_EX_TRANSPARENT | WS_VISIBLE, x0,y0,x1,y1, WF->hwnd, ID, GUIControl::GUIInstance->hInstance, NULL); //GetModuleHandle(NULL) if(hLabel == NULL) { LPVOID lpMsgBuf; if (!FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language (LPTSTR) &lpMsgBuf, 0, NULL )) { // Handle the error. return; } // Process any inserts in lpMsgBuf. // ... // Display the string. MessageBox( NULL, (LPCTSTR)lpMsgBuf, "Error", MB_OK | MB_ICONINFORMATION ); // Free the buffer. LocalFree( lpMsgBuf ); MessageBox(NULL, "Window Creation Failed44!", "Error!", MB_ICONEXCLAMATION | MB_OK); // TODO: We should THROW the error } GUIControl::GUIInstance->RegisterManualDraw(hLabel,this); PAINTSTRUCT ps; // We Need a handle to the window. BeginPaint will do for now. HDC hdc = BeginPaint(WF->hwnd, &ps); // We need a drawing context, and a bitmap for our back-buffer: OffScreenHdc = CreateCompatibleDC(hdc); OffScreen = CreateCompatibleBitmap(hdc, x1, y1); // We must associate the Bitmap with the OffScrenHdc. // The Routine seems to return an 'old' buffer - do we need it? HBITMAP hbmOldBuffer = (HBITMAP) SelectObject(OffScreenHdc, OffScreen); // We havent done any paint, but end it anyways. EndPaint(WF->hwnd, &ps); clear(); } void MCanvas::HandleEvents(event e) { RECT rcClient; // client area rectangle POINT ptClientUL; // client upper left corner POINT ptClientLR; // client lower right corner if (e.msg == WM_LBUTTONUP) { // ReleaseCapture(); ClipCursor(NULL); } if (e.msg == WM_LBUTTONDOWN) { //SetCapture(hLabel); GetClientRect(hLabel, &rcClient); ptClientUL.x = rcClient.left; ptClientUL.y = rcClient.top; // Add one to the right and bottom sides, because the // coordinates retrieved by GetClientRect do not // include the far left and lowermost pixels. ptClientLR.x = rcClient.right + 1; ptClientLR.y = rcClient.bottom + 1; ClientToScreen(hLabel, &ptClientUL); ClientToScreen(hLabel, &ptClientLR); SetRect(&rcClient, ptClientUL.x, ptClientUL.y, ptClientLR.x, ptClientLR.y); ClipCursor(&rcClient); } e.EventSource = this; if (myEventHandler !=0) myEventHandler->HandleEvents(e); }; void MCanvas::doDraw() { InvalidateRect(hLabel,0,FALSE); } void MCanvas::draw() { PAINTSTRUCT ps; HDC hdc = BeginPaint(hLabel, &ps); BitBlt(hdc, 0, 0, _x1, _y1, OffScreenHdc, 0, 0, SRCCOPY); EndPaint(hLabel, &ps); }; void MCanvas::clear() { BitBlt(OffScreenHdc,0,0,_x1,_y1,OffScreenHdc,0,0,WHITENESS); } void MCanvas::putPixel(int x,int y,int r, int g, int b) { SetPixel(OffScreenHdc, x, y, RGB(r,g,b)); } void MCanvas::line(int x,int y,int x2, int y2) { MoveToEx(OffScreenHdc, x, y, 0); LineTo(OffScreenHdc, x2,y2); } void MCanvas::circle(int x,int y,int radius) { Ellipse(OffScreenHdc, x-radius, y-radius, x+radius, y+radius); } void MCanvas::rectangle(int x,int y,int x2, int y2) { ::Rectangle(OffScreenHdc, x,y,x2,y2); } void MCanvas::deleteColor() { SelectObject(OffScreenHdc, oldPen); DeleteObject(myPen); myPen = 0; } void MCanvas::setColor(int r,int g,int b) { if (myPen != 0) {deleteColor();} myPen = CreatePen(PS_SOLID, 0, RGB(r, g, b)); oldPen = (HPEN) SelectObject(OffScreenHdc, myPen); } void MCanvas::setColor(COLORREF c) { if (myPen != 0) {deleteColor();} myPen = CreatePen(PS_SOLID, 0, c); oldPen = (HPEN) SelectObject(OffScreenHdc, myPen); } void MCanvas::deleteBrush() { SelectObject(OffScreenHdc, oldBrush); DeleteObject(myBrush); myBrush = 0; } void MCanvas::setBrush(int r,int g,int b) { if (myBrush != 0) {deleteBrush();} myBrush = CreateSolidBrush(RGB(r, g, b)); oldBrush = (HBRUSH) SelectObject(OffScreenHdc, myBrush); } void MCanvas::setBrush(COLORREF c) { if (myBrush != 0) {deleteBrush();} myBrush = CreateSolidBrush(c); oldBrush = (HBRUSH) SelectObject(OffScreenHdc, myBrush); } void MCanvas::print(int x,int y,std::string s) { TextOut (OffScreenHdc, x, y, s.c_str(), s.length() ); } void MCanvas::setBGColor(int r, int g, int b) { SetBkColor (OffScreenHdc, RGB(r,g,b)); } void MCanvas::setBGColor(COLORREF c) { SetBkColor (OffScreenHdc, c); } void MCanvas::setTextColor(int r, int g, int b) { SetTextColor (OffScreenHdc, RGB(r,g,b)); } void MCanvas::setTextColor(COLORREF c) { SetTextColor (OffScreenHdc, c); } }; // end of namespace Syntopia Project. 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