490 lines
14 KiB
C
490 lines
14 KiB
C
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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tiltcal.c
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Abstract: This module contains code to calibrate pen tilt of the mutoh pen
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tablet.
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Environment:
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User mode
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Author:
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Michael Tsang (MikeTs) 20-Apr-2000
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Revision History:
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--*/
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#include "pch.h"
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#ifdef PENPAGE
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#define NUM_PENTILTCAL_XPTS 2
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#define NUM_PENTILTCAL_YPTS 2
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#define NUM_PENTILTCAL_PTS (NUM_PENTILTCAL_XPTS*NUM_PENTILTCAL_YPTS)
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#define SCREEN_TARGET_XOFFSET 128
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#define SCREEN_TARGET_YOFFSET 128
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#define VICINITY_OFFSET 50
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#define INSTRUCTIONS_WIDTH 256
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#define INSTRUCTIONS_HEIGHT 128
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static TCHAR gtszCalibrate[] = TEXT("Calibrate");
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static TCHAR gtszCalibrateTitle[64] = {0};
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static TCHAR gtszInstructions[256] = {0};
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static RECT grectInstructions = {0};
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static CALIBRATE_PT gCalPts[NUM_PENTILTCAL_YPTS][NUM_PENTILTCAL_XPTS] = {0};
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static int giNumPenTiltCalPts = 0;
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static HWND ghwndParent = 0;
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static LONG gcxScreen = 0, gcyScreen = 0;
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static HPEN ghpenRed = 0, ghpenBlue = 0;
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func BOOL | CreatePenTiltCalWindow |
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* Entry point of the pen tilt calibration code.
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*
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* @parm IN HWND | hwndParent | Parent Window handle.
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*
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* @rvalue SUCCESS | Returns TRUE.
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* @rvalue FAILURE | Returns FALSE.
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*
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*****************************************************************************/
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BOOL
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CreatePenTiltCalWindow(
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IN HWND hwndParent
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)
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{
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TRACEPROC("CreatePenTiltCalWindow", 2)
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BOOL rc = FALSE;
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HWND hwnd;
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TRACEENTER(("(hwndParent=%p)\n", hwndParent));
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giNumPenTiltCalPts = 0;
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RtlZeroMemory(gCalPts, sizeof(gCalPts));
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ghwndParent = hwndParent;
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LoadString(ghInstance,
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IDS_CALIBRATE_TITLE,
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gtszCalibrateTitle,
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sizeof(gtszCalibrateTitle)/sizeof(TCHAR));
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LoadString(ghInstance,
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IDS_CALIBRATE_INSTRUCTIONS,
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gtszInstructions,
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sizeof(gtszInstructions)/sizeof(TCHAR));
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gcxScreen = GetSystemMetrics(SM_CXSCREEN);
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gcyScreen = GetSystemMetrics(SM_CYSCREEN);
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grectInstructions.left = (gcxScreen - INSTRUCTIONS_WIDTH)/2;
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grectInstructions.top = (gcyScreen - INSTRUCTIONS_HEIGHT)/2;
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grectInstructions.right = grectInstructions.left + INSTRUCTIONS_WIDTH;
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grectInstructions.bottom = grectInstructions.top + INSTRUCTIONS_HEIGHT;
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RegisterPenTiltCalClass(ghInstance);
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hwnd = CreateWindow(gtszCalibrate, //Class Name
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gtszCalibrate, //Window Name
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WS_POPUP, //Style
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0, //Window X
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0, //Window Y
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gcxScreen, //Window Width
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gcyScreen, //Window Height
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hwndParent, //Parent Handle
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NULL, //Menu Handle
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ghInstance, //Instance Handle
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NULL); //Creation Data
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if (hwnd != NULL)
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{
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ShowWindow(hwnd, SW_SHOWNORMAL);
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rc = TRUE;
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}
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TRACEEXIT(("=%x\n", rc));
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return rc;
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} //CreatePenTiltCalWindow
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func BOOL | RegisterPenTiltCalClass |
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* Register window class.
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*
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* @parm IN HINSTANCE | hInstance | Instance handle.
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*
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* @rvalue SUCCESS | Returns class atom
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* @rvalue FAILURE | Returns 0
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*
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*****************************************************************************/
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ATOM
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RegisterPenTiltCalClass(
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IN HINSTANCE hInstance
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)
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{
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TRACEPROC("RegisterPenTiltCalClass", 2)
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ATOM atom;
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WNDCLASSEX wcex;
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TRACEENTER(("(hInstance=%p)\n", hInstance));
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wcex.cbSize = sizeof(wcex);
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wcex.style = CS_HREDRAW | CS_VREDRAW;
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wcex.lpfnWndProc = PenTiltCalWndProc;
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wcex.cbClsExtra = 0;
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wcex.cbWndExtra = 0;
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wcex.hInstance = hInstance;
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wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_TABLETPC);
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wcex.hCursor = NULL; //No cursor is shown.
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wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
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wcex.lpszMenuName = NULL;
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wcex.lpszClassName = gtszCalibrate;
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wcex.hIconSm = NULL;
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atom = RegisterClassEx(&wcex);
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TRACEEXIT(("=%x\n", atom));
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return atom;
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} //RegisterPenTiltCalClass
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/*****************************************************************************
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*
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* @doc EXTERNAL
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*
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* @func LRESULT | PenTiltCalWndProc |
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* Dialog procedure for the pen tilt calibration page.
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*
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* @parm IN HWND | hwnd | Window handle.
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* @parm IN UINT | uMsg | Message.
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* @parm IN WPARAM | wParam | Word Parameter.
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* @parm IN LPARAM | lParam | Long Parameter.
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*
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* @rvalue Return value depends on the message.
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*
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*****************************************************************************/
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LRESULT CALLBACK
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PenTiltCalWndProc(
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IN HWND hwnd,
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IN UINT uMsg,
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IN WPARAM wParam,
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IN LPARAM lParam
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)
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{
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TRACEPROC("PenTiltCalWndProc", 2)
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LRESULT rc = 0;
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HDC hDC;
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TRACEENTER(("(hwnd=%p,Msg=%s,wParam=%x,lParam=%x)\n",
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hwnd, LookupName(uMsg, WMMsgNames) , wParam, lParam));
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switch (uMsg)
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{
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case WM_CREATE:
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{
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ghpenRed = CreatePen(PS_SOLID, 0, RGB(255, 0, 0));
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ghpenBlue = CreatePen(PS_SOLID, 0, RGB(0, 0, 255));
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gCalPts[0][0].ScreenPt.x = SCREEN_TARGET_XOFFSET;
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gCalPts[0][0].ScreenPt.y = SCREEN_TARGET_YOFFSET;
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gCalPts[0][1].ScreenPt.x = gcxScreen - SCREEN_TARGET_XOFFSET;
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gCalPts[0][1].ScreenPt.y = SCREEN_TARGET_YOFFSET;
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gCalPts[1][0].ScreenPt.x = SCREEN_TARGET_XOFFSET;
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gCalPts[1][0].ScreenPt.y = gcyScreen - SCREEN_TARGET_YOFFSET;
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gCalPts[1][1].ScreenPt.x = gcxScreen - SCREEN_TARGET_XOFFSET;
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gCalPts[1][1].ScreenPt.y = gcyScreen - SCREEN_TARGET_YOFFSET;
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ShowCursor(FALSE);
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break;
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}
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case WM_LBUTTONDOWN:
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{
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PCALIBRATE_PT CalPt;
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WORD wButtonState;
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CalPt = FindVicinity(GET_X_LPARAM(lParam),
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GET_Y_LPARAM(lParam),
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VICINITY_OFFSET);
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if (CalPt != NULL)
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{
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CalPt->DigiPt.x = GET_X_LPARAM(lParam);
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CalPt->DigiPt.y = GET_Y_LPARAM(lParam);
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if (!(CalPt->dwFlags & CPF_CALIBRATED))
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{
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CalPt->dwFlags |= CPF_CALIBRATED;
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giNumPenTiltCalPts++;
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hDC = GetDC(hwnd);
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DrawTarget(hDC, CalPt);
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ReleaseDC(hwnd, hDC);
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if (giNumPenTiltCalPts == NUM_PENTILTCAL_PTS)
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{
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int rcID = DoPenTiltCal(hwnd,
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&PenSettings.dxPenTilt,
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&PenSettings.dyPenTilt);
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if ((rcID == IDYES) || (rcID == IDCANCEL))
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{
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SendMessage(ghwndParent,
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WM_PENTILTCAL_DONE,
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(WPARAM)rcID,
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(LPARAM)hwnd);
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}
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}
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}
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}
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break;
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}
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case WM_CHAR:
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switch (wParam)
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{
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case VK_ESCAPE:
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SendMessage(ghwndParent,
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WM_PENTILTCAL_DONE,
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(WPARAM)NULL,
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(LPARAM)hwnd);
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break;
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}
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break;
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case WM_PAINT:
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{
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PAINTSTRUCT ps;
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int i, j;
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hDC = BeginPaint(hwnd, &ps);
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for (i = 0; i < NUM_PENTILTCAL_YPTS; ++i)
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{
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for (j = 0; j < NUM_PENTILTCAL_XPTS; ++j)
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{
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DrawTarget(hDC, &gCalPts[i][j]);
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}
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}
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DrawText(hDC,
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gtszInstructions,
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-1,
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&grectInstructions,
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DT_WORDBREAK | DT_LEFT | DT_VCENTER);
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EndPaint(hwnd, &ps);
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break;
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}
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case WM_DESTROY:
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ShowCursor(TRUE);
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if (ghpenRed != NULL)
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{
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DeleteObject(ghpenRed);
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}
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if (ghpenBlue != NULL)
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{
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DeleteObject(ghpenBlue);
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}
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break;
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default:
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rc = DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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TRACEEXIT(("=%x\n", rc));
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return rc;
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} //PenTiltCalWndProc
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func PCALIBRATE_PT | FindVicinity |
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* Find if the click is in the vicinity of the calibrate points.
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*
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* @parm IN int | x | X value.
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* @parm IN int | y | Y value.
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* @parm IN int | offset | Vicinity offset
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*
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* @rvalue SUCCESS | Returns calibrate point found in the vicinity.
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* @rvalue FAILURE | Returns NULL.
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*
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*****************************************************************************/
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PCALIBRATE_PT
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FindVicinity(
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IN int x,
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IN int y,
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IN int offset
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)
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{
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TRACEPROC("FindVicinity", 2)
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PCALIBRATE_PT CalPt = NULL;
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int i, j;
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TRACEENTER(("(x=%d,y=%d,offset=%d)\n", x, y, offset));
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for (i = 0; i < NUM_PENTILTCAL_YPTS; ++i)
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{
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for (j = 0; j < NUM_PENTILTCAL_XPTS; ++j)
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{
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if ((x >= gCalPts[i][j].ScreenPt.x - offset) &&
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(x <= gCalPts[i][j].ScreenPt.x + offset) &&
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(y >= gCalPts[i][j].ScreenPt.y - offset) &&
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(y <= gCalPts[i][j].ScreenPt.y + offset))
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{
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CalPt = & gCalPts[i][j];
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break;
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}
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}
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}
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TRACEEXIT(("=%p\n", CalPt));
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return CalPt;
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} //FindVicinity
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func VOID | DrawTarget |
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* Draw the given target point.
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*
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* @parm IN HDC | hDC | DC handle.
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* @parm IN PCALIBRATE_PT | CalPt | Points to the calibration point.
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*
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* @rvalue None.
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*
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*****************************************************************************/
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VOID
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DrawTarget(
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IN HDC hDC,
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IN PCALIBRATE_PT CalPt
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)
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{
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TRACEPROC("DrawTarget", 2)
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HPEN hpenOld;
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TRACEENTER(("(hDC=%x,CalPt=%p)\n", hDC, CalPt));
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hpenOld = SelectObject(hDC,
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(CalPt->dwFlags & CPF_CALIBRATED)?
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ghpenRed: ghpenBlue);
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MoveToEx(hDC, CalPt->ScreenPt.x - 16, CalPt->ScreenPt.y, NULL);
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LineTo(hDC, CalPt->ScreenPt.x - 4, CalPt->ScreenPt.y);
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MoveToEx(hDC, CalPt->ScreenPt.x - 2, CalPt->ScreenPt.y, NULL);
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LineTo(hDC, CalPt->ScreenPt.x + 2, CalPt->ScreenPt.y);
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MoveToEx(hDC, CalPt->ScreenPt.x + 4, CalPt->ScreenPt.y, NULL);
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LineTo(hDC, CalPt->ScreenPt.x + 16, CalPt->ScreenPt.y);
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MoveToEx(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y - 16, NULL);
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LineTo(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y - 4);
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MoveToEx(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y - 2, NULL);
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LineTo(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y + 2);
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MoveToEx(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y + 4, NULL);
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LineTo(hDC, CalPt->ScreenPt.x, CalPt->ScreenPt.y + 16);
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SelectObject(hDC, hpenOld);
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TRACEEXIT(("!\n"));
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return;
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} //DrawTarget
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func int | DoPenTiltCal |
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* Confirm with the user on the calibration data and do the
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* calibration calculation.
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*
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* @parm IN HWND | hwnd | Window handle.
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* @parm OUT PLONG | pdxPenTilt | To hold the x pen tilt compensation.
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* @parm OUT PLONG | pdyPenTilt | To hold the y pen tilt compensation.
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*
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* @rvalue SUCCESS | Returns IDYES.
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* @rvalue FAILURE | Returns IDNO or IDCANCEL.
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*
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*****************************************************************************/
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int
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DoPenTiltCal(
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IN HWND hwnd,
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OUT PLONG pdxPenTilt,
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OUT PLONG pdyPenTilt
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)
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{
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TRACEPROC("DoPenTiltCal", 2)
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int rc;
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TCHAR tszMsg[128];
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TRACEENTER(("(hwnd=%x,pdxPenTilt=%p,pdyPenTilt)\n",
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hwnd, pdxPenTilt, pdyPenTilt));
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LoadString(ghInstance,
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IDS_CALIBRATE_CONFIRM,
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tszMsg,
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sizeof(tszMsg)/sizeof(TCHAR));
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ShowCursor(TRUE);
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rc = MessageBox(hwnd,
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tszMsg,
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gtszCalibrateTitle,
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MB_YESNOCANCEL | MB_ICONQUESTION);
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ShowCursor(FALSE);
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if (rc == IDNO)
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{
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int i, j;
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//
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// Reset the calibration.
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//
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for (i = 0; i < NUM_PENTILTCAL_YPTS; ++i)
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{
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for (j = 0; j < NUM_PENTILTCAL_XPTS; ++j)
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{
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gCalPts[i][j].dwFlags &= ~CPF_CALIBRATED;
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}
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}
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giNumPenTiltCalPts = 0;
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InvalidateRect(hwnd, NULL, TRUE);
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}
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else if (rc == IDYES)
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{
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int i, j;
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*pdxPenTilt = *pdyPenTilt = 0;
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for (i = 0; i < NUM_PENTILTCAL_YPTS; ++i)
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{
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for (j = 0; j < NUM_PENTILTCAL_XPTS; ++j)
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{
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*pdxPenTilt += gCalPts[i][j].DigiPt.x -
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gCalPts[i][j].ScreenPt.x;
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*pdyPenTilt += gCalPts[i][j].DigiPt.y -
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gCalPts[i][j].ScreenPt.y;
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}
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}
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*pdxPenTilt /= NUM_PENTILTCAL_PTS;
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*pdyPenTilt /= NUM_PENTILTCAL_PTS;
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}
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TRACEEXIT(("=%x\n", rc));
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return rc;
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} //DoPenTiltCal
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#endif
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