WinCE触摸屏校准程序加背景

// // Copyright (c) Microsoft Corporation. All rights reserved. // // // Use of this source code is subject to the terms of the Microsoft end-user // license agreement (EULA) under which you licensed this SOFTWARE PRODUCT. // If you did not accept the terms of the EULA, you are not authorized to use // this source code. For a copy of the EULA, please see the LICENSE.RTF on your // install media. // #include <windows.h> #include <calibrui.h> #include <calibrrc.h> #define C_CALIBRATION_MSG_BUF_CHARS 128 static TOUCH_CALIBRATE_STATE *s_ptcs; // Current touch calibration State static HINSTANCE s_hinst; #define USE_ENTER_ESC_MASK (KBDI_KEYBOARD_PRESENT|KBDI_KEYBOARD_ENABLED|KBDI_KEYBOARD_ENTER_ESC) static BOOL UseEnterEsc( void ) { return (GetKeyboardStatus() & USE_ENTER_ESC_MASK) == USE_ENTER_ESC_MASK; } /*++ TouchCalibrateUI_Initialize: --*/ void TouchCalibrateUI_Initialize( TOUCH_CALIBRATE_STATE *ptcs, HINSTANCE hinst ) { s_ptcs = ptcs; s_hinst = hinst; } static void TextSize( HDC hdc, PCTSTR pszStr, int cChars, SIZE *pSize ) { if ( !GetTextExtentExPointW( hdc, pszStr, cChars, 0, // nMaxExtent NULL, // lpnFit NULL, pSize) ) { ERRORMSG(1, (TEXT("GetLastError: %d (dec)/r/n"), GetLastError())); ASSERT(0); } return; } static void TouchCalibrateDrawScreenText( HDC hdc, int cLines, UINT IdStringBase ) { int VertSpacing = 0; TCHAR buf[C_CALIBRATION_MSG_BUF_CHARS]; int cChars; int xText, yText; SIZE Size; int i; // Clear the screen. Rectangle(hdc, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN)); // Display each line of instructions. for ( i = 0; i < cLines; i++ ) { if ( LoadString(s_hinst, IdStringBase+i, buf, C_CALIBRATION_MSG_BUF_CHARS) == 0 ) { continue; } cChars = _tcslen(buf); // Figure text position. TextSize(hdc, buf, cChars, &Size); xText = GetSystemMetrics(SM_CXSCREEN)/2 - Size.cx/2; // Center horizontally // If first pass through, figure vertical spacing, // else just skip to the next line. if ( VertSpacing == 0 ) { VertSpacing = Size.cy + Size.cy/10; yText = VertSpacing; // Skip a line at the top } else { yText += VertSpacing; } // Draw this line. ExtTextOut( hdc, xText, yText, NULL, NULL, // rectangle options buf, cChars, NULL); } HBITMAP hbm = NULL; hbm = (HBITMAP) LoadImage(s_hinst, TEXT("BACKIMG"), IMAGE_BITMAP, 0, 0, 0); if (hbm == NULL) { RETAILMSG(1, (TEXT("Calibrui: load img fail/n"))); } else { HDC hdcImage = CreateCompatibleDC(NULL); if (!hdcImage) { RETAILMSG(1, (TEXT("Calibrui: CreateCompatibleDC failed./n"))); } else { BITMAP bm; SelectObject(hdcImage, hbm); GetObject(hbm, sizeof(bm), &bm); int dx = 0, dy = 0; dx = dx == 0 ? bm.bmWidth : dx; // Use the passed size, unless zero dy = dy == 0 ? bm.bmHeight : dy; if (!StretchBlt(hdc, 0, 0, dx, dy, hdcImage, 0, 0, dx, dy, SRCCOPY)) RETAILMSG(1, (TEXT("Calibrui: StretchBlt fail/n"))); } } return; } /*++ TouchCalibrateUI_DrawMainScreen: --*/ void TouchCalibrateUI_DrawMainScreen( HDC hdc ) { UINT IdStringBase; // Figure out string resources based on whether keyboard is enabled. if ( UseEnterEsc() ) { IdStringBase = IDS_CALIBRATION_1_1; } else { IdStringBase = IDS_CALIBRATION_1_1_NK; } TouchCalibrateDrawScreenText(hdc, C_CALIBRATION1_LINES, IdStringBase); return; } /*++ TouchCalibrateUI_DrawConfirmationScreen: --*/ void TouchCalibrateUI_DrawConfirmationScreen( HDC hdc ) { UINT IdStringBase; // Figure out string resources based on whether keyboard is enabled. if ( UseEnterEsc() ) { IdStringBase = IDS_CALIBRATION_2_1; } else { IdStringBase = IDS_CALIBRATION_2_1_NK; } TouchCalibrateDrawScreenText(hdc, C_CALIBRATION2_LINES, IdStringBase); return; } /*++ TouchCalibrateUI_HandleUserInputMessage: --*/ void TouchCalibrateUI_HandleUserInputMessage( UINT Message, UINT Param1, UINT Param2 ) { static BOOL bSawDown = FALSE; // Ignore everything until actually confirming. if ( *s_ptcs != TCS_CONFIRMING ) { bSawDown = FALSE; return; } // Wait for Esc or Enter key or additional tap switch (Message) { case WM_SYSKEYDOWN : if ( VK_RETURN == Param1 ) { TouchCalibrateUI_Done(TCS_ACCEPTED); } else if ( VK_ESCAPE == Param1 ) { TouchCalibrateUI_Done(TCS_REJECTED); } break; case WM_LBUTTONDOWN : bSawDown = TRUE; break; case WM_LBUTTONUP : if ( bSawDown ) { TouchCalibrateUI_Done(TCS_ACCEPTED); } break; } return; } void TouchCalibrateUI_WaitForConfirmation( HANDLE hevt, HDC hdcConfirmation ) { int TimeOut; DWORD dwEventTimeOut; // Wait here until TouchCalibrateUI_HandleUserInputMessage signals. // If the keyboard is not enabled, we wait until a tap or for 30 seconds // to decide what to do. If there is a tap, the calibration is accepted. // If we time out after 30 seconds, the calibration is rejected. // If Keyboard is enabled, set timeout to INFINITE. // If not, set the timeout to 1 sec and display a count down. dwEventTimeOut = UseEnterEsc() ? INFINITE : 1000; // Assume a 1 sec timeout. If the timeout is infinite, it won't // matter. for ( TimeOut = 30 ; TimeOut >= 0 ; TimeOut--) { TCHAR buf[C_CALIBRATION_MSG_BUF_CHARS]; TCHAR bufFormat[C_CALIBRATION_MSG_BUF_CHARS]; int cChars; int xText, yText; SIZE Size; WaitForSingleObject(hevt, dwEventTimeOut); // If no longer in the confirming state (for whatever reason) // we're done. if ( *s_ptcs != TCS_CONFIRMING ) { break; } // Display countdown. LoadString(s_hinst, IDS_CALIBRATION_TIMEOUT, bufFormat, C_CALIBRATION_MSG_BUF_CHARS); wsprintf(buf, bufFormat, TimeOut); cChars = _tcslen(buf); TextSize (hdcConfirmation, buf, cChars, &Size); xText = GetSystemMetrics(SM_CXSCREEN)/2 - Size.cx/2; // Center yText = (Size.cy + Size.cy/10)*10; // Set line. ExtTextOut( hdcConfirmation, xText, yText, NULL, NULL, // rectangle options buf, cChars, NULL); } return; }