BOOL TabletBase::LoadCheckWintab(void){
// char WName[50]; /* String to hold window name */
struct tagAXIS TpOri[3]; /* The capabilities of tilt */
double tpvar; /* A temp for converting fix to double */
if(!LoadWintab()) return FALSE;
if (!gpWTInfoA(0, 0, NULL)) return FALSE;
/* get info about tilt */
m_TiltSupport = gpWTInfoA(WTI_DEVICES,DVC_ORIENTATION,&TpOri);
if (m_TiltSupport) {
/* does the tablet support azimuth and altitude */
if (TpOri[0].axResolution && TpOri[1].axResolution) {
/* convert azimuth resulution to double */
tpvar = FIX_DOUBLE(TpOri[0].axResolution);
/* convert from resolution to radians */
m_aziFactor = tpvar/(2*M_PI);
/* convert altitude resolution to double */
tpvar = FIX_DOUBLE(TpOri[1].axResolution);
/* scale to arbitrary value to get decent line length */
m_altFactor = tpvar/1000;
/* adjust for maximum value at vertical */
m_altAdjust = (double)TpOri[1].axMax/m_altFactor;
}
else { /* no so dont do tilt stuff */
m_TiltSupport = FALSE;
}
}
return TRUE;
}
BOOL TabletBase::TabletInit()
{
LOGCONTEXT lcMine; /* The context of the tablet */
AXIS TabletX, TabletY; /* The maximum tablet size */
/* get default region */
gpWTInfoA(WTI_DEFCONTEXT, 0, &lcMine);
/* modify the digitizing region */
wsprintf(lcMine.lcName, "TiltTest Digitizing %x", m_hInstance);
lcMine.lcOptions |= CXO_MESSAGES;
lcMine.lcPktData = PACKETDATA;
lcMine.lcPktMode = PACKETMODE;
lcMine.lcMoveMask = PACKETDATA;
lcMine.lcBtnUpMask = lcMine.lcBtnDnMask;
/* Set the entire tablet as active */
gpWTInfoA(WTI_DEVICES,DVC_X,&TabletX);
gpWTInfoA(WTI_DEVICES,DVC_Y,&TabletY);
lcMine.lcInOrgX = 0;
lcMine.lcInOrgY = 0;
lcMine.lcInExtX = TabletX.axMax;
lcMine.lcInExtY = TabletY.axMax;
/* output the data in screen coords */
lcMine.lcOutOrgX = lcMine.lcOutOrgY = 0;
lcMine.lcOutExtX = GetSystemMetrics(SM_CXSCREEN);
/* move origin to upper left */
lcMine.lcOutExtY = -GetSystemMetrics(SM_CYSCREEN);
/* open the region */
m_hTablet = gpWTOpenA(m_hWnd, &lcMine, TRUE);
return TRUE;
}
int CMFC_DEMOView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
// Open a Wintab context
// Get default context information
gpWTInfoA( WTI_DEFCONTEXT, 0, &lc );
// Open the context
lc.lcPktData = PACKETDATA;
lc.lcPktMode = PACKETMODE;
lc.lcOptions = CXO_MESSAGES;
hCtx = gpWTOpenA( m_hWnd, &lc, TRUE );
return 0;
}
BOOL TabletBase::ProcessMessage(UINT msg, WPARAM wParam, LPARAM lParam)
{
PACKET pkt; /* the current packet */
HDC hDC; /* handle for Device Context */
PAINTSTRUCT psPaint; /* the paint structure */
//渡された message から、イベントの種類を解析する
switch(msg){
case WM_PAINT: { /* Paint the window */
int ZAngle; /* Raw Altitude */
UINT Thata; /* Raw Azimuth */
double ZAngle2; /* Adjusted Altitude */
double Thata2; /* Adjusted Azimuth */
char szOutput[128]; /* String for outputs */
if (m_TiltSupport) {
/*
wintab.h defines .orAltitude
as a UINT but documents .orAltitude
as positive for upward angles
and negative for downward angles.
WACOM uses negative altitude values to
show that the pen is inverted;
therefore we cast .orAltitude as an
(int) and then use the absolute value.
*/
ZAngle = (int)m_ortNew.orAltitude;
ZAngle2 = m_altAdjust - (double)abs(ZAngle)/m_altFactor;
/* adjust azimuth */
Thata = m_ortNew.orAzimuth;
Thata2 = (double)Thata/m_aziFactor;
/* get the length of the diagnal to draw */
m_Z1Angle.x = (int)(ZAngle2*sin(Thata2));
m_Z1Angle.y = (int)(ZAngle2*cos(Thata2));
}
else {
m_Z1Angle.x = 0;
m_Z1Angle.y = 0;
}
if (hDC = BeginPaint(m_hWnd, &psPaint)) {
/* write raw tilt info */
if (m_TiltSupport) {
wsprintf((LPSTR)szOutput,"Tilt: %03i, Thata: %04u\0",
ZAngle,Thata);
}
else {
strcpy(szOutput,"Tilt not supported.");
}
DrawText(hDC,szOutput,strlen(szOutput),&m_rcInfoTilt,DT_LEFT);
/* write current cursor name */
gpWTInfoA(WTI_CURSORS + m_curNew, CSR_NAME, szOutput);
DrawText(hDC,szOutput,strlen(szOutput),&m_rcInfoName,DT_LEFT);
/* write tablet name */
gpWTInfoA(WTI_DEVICES, DVC_NAME, szOutput);
DrawText(hDC,szOutput,strlen(szOutput),&m_rcInfoGen,DT_LEFT);
/* draw circle based on tablet pressure */
Ellipse(hDC, m_ptNew.x - m_prsNew, m_ptNew.y - m_prsNew,
m_ptNew.x + m_prsNew, m_ptNew.y + m_prsNew);
/* draw a line based on tablet tilt */
MoveTo(hDC, m_ptNew.x, m_ptNew.y);
LineTo(hDC, m_ptNew.x + m_Z1Angle.x, m_ptNew.y - m_Z1Angle.y);
/* draw CROSS based on tablet position */
MoveTo(hDC, m_ptNew.x - 20, m_ptNew.y );
LineTo(hDC, m_ptNew.x + 20, m_ptNew.y );
MoveTo(hDC, m_ptNew.x , m_ptNew.y - 20);
LineTo(hDC, m_ptNew.x , m_ptNew.y + 20);
EndPaint(m_hWnd, &psPaint);
}
break;
}
case WT_PACKET: /* A packet is waiting from WINTAB */
if (gpWTPacket((HCTX)lParam, wParam, &pkt)) {
/* old co-ordinates used for comparisons */
POINT ptOld = m_ptNew;
UINT prsOld = m_prsNew;
UINT curOld = m_curNew;
ORIENTATION ortOld = m_ortNew;
/* save new co-ordinates */
m_ptNew.x = (UINT)pkt.pkX;
m_ptNew.y = (UINT)pkt.pkY;
m_curNew = pkt.pkCursor;
m_prsNew = pkt.pkNormalPressure;
m_ortNew = pkt.pkOrientation;
/* If the visual changes update the main graphic */
if (m_ptNew.x != ptOld.x ||
m_ptNew.y != ptOld.y ||
m_prsNew != prsOld ||
m_ortNew.orAzimuth != ortOld.orAzimuth ||
m_ortNew.orAltitude != ortOld.orAltitude ||
m_ortNew.orTwist != ortOld.orTwist) {
InvalidateRect(m_hWnd, &m_rcDraw, TRUE);
}
/* if the displayed data changes update the text */
if (m_ortNew.orAzimuth != ortOld.orAzimuth ||
m_ortNew.orAltitude != ortOld.orAltitude ||
m_ortNew.orTwist != ortOld.orTwist) {
InvalidateRect(m_hWnd, &m_rcInfoTilt, TRUE);
}
/* if the cursor changes update the cursor name */
if (m_curNew != curOld) {
InvalidateRect(m_hWnd, &m_rcInfoName, TRUE);
}
}
break;
//----終了処理----
case WM_DESTROY:
UnloadWintab( );
PostQuitMessage(0);
break;
//----デフォルトの処理----
default :
return DefWindowProc(m_hWnd,msg,wParam,lParam);
}
return 0L;
}
