void CSpindialCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect&)
{
LPRECT lpr;
OLE_COLOR color;
CBrush br;
POINT centerPt;
POINT tickpos[MAX_POSITIONS];
CPen* pOldPen;
lpr = (LPRECT)(LPCRECT)rcBounds;
// Paint background using the ambient background color
color = AmbientBackColor();
br.CreateSolidBrush(TranslateColor(color));
pdc->FillRect(lpr, &br);
// Draw the dial using a black pen
pOldPen = (CPen*)pdc->SelectStockObject(BLACK_PEN);
pdc->Ellipse(lpr);
// Determine coordinates of center point
centerPt.x = lpr->left + ((lpr->right - lpr->left) / 2);
centerPt.y = lpr->top + ((lpr->bottom - lpr->top) / 2);
// Determine coordinates of intersections of tick marks and dial
tickpos[0].x = centerPt.x;
tickpos[0].y = lpr->top;
tickpos[1].x = lpr->right;
tickpos[1].y = centerPt.y;
tickpos[2].x = centerPt.x;
tickpos[2].y = lpr->bottom;
tickpos[3].x = lpr->left;
tickpos[3].y = centerPt.y;
// Draw each tick mark
pdc->MoveTo(tickpos[0]);
pdc->LineTo(tickpos[0].x, tickpos[0].y+TICK_LEN);
pdc->MoveTo(tickpos[1]);
pdc->LineTo(tickpos[1].x-TICK_LEN, tickpos[1].y);
pdc->MoveTo(tickpos[2]);
pdc->LineTo(tickpos[2].x,tickpos[2].y-TICK_LEN);
pdc->MoveTo(tickpos[3]);
pdc->LineTo(tickpos[3].x+TICK_LEN, tickpos[3].y);
// Draw pointer of dial
pdc->MoveTo(centerPt);
pdc->LineTo(tickpos[m_needlePosition]);
pdc->SelectObject(pOldPen);
return;
}
void CLREnvelopeEditorCtrl::OnDraw(
CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid)
{
//build memory device context to draw to
CDC DrawDC;
CDC* pDrawDC=&DrawDC;
CBitmap MemoryBitmap;
CBitmap* pMemoryBitmap=&MemoryBitmap;
CBitmap* pOldBitmap;
pDrawDC->CreateCompatibleDC(pdc);
pMemoryBitmap->CreateCompatibleBitmap(pdc,rcBounds.right,rcBounds.bottom);
pOldBitmap=pDrawDC->SelectObject(pMemoryBitmap);
//refresh m_RCCtrlArea with valid one
m_RCCtrlArea=rcBounds;
m_RCCtrlArea.bottom-=CONTROL_BAR_HEIGHT;
//clear background
CBrush brBackground(TranslateColor(AmbientBackColor()));
pDrawDC->FillRect(m_RCCtrlArea, &brBackground);
//draw selected area if present
if(m_bHasSelection) {
CBrush brSelection;
COLORREF selection_color=TranslateColor(AmbientBackColor());
BYTE r_color,g_color,b_color;
r_color=GetRValue(selection_color);
g_color=GetGValue(selection_color);
b_color=GetBValue(selection_color);
int sum3=((int)r_color+(int)g_color+(int)b_color)/3;
if(sum3>30) {
if(r_color>30) r_color-=30;
else r_color=0;
if(g_color>30) g_color-=30;
else g_color=0;
if(b_color>30) b_color-=30;
else b_color=0;
}
else {
if(r_color<225) r_color+=30;
else r_color=255;
if(g_color<225) g_color+=30;
else g_color=255;
if(b_color<225) b_color+=30;
else b_color=255;
}
selection_color=RGB(r_color,g_color,b_color);
brSelection.CreateSolidBrush(selection_color);
CRect selection_rect;
selection_rect.top=0;
selection_rect.bottom=m_RCCtrlArea.bottom;
selection_rect.left=translateEnvelopeXToScreenX(m_lFirstSelectedPosition);
selection_rect.right=translateEnvelopeXToScreenX(m_lLastSelectedPosition);
pDrawDC->FillRect(&selection_rect,&brSelection);
}
//draw X and Y axes
CPen axis_pen;
axis_pen.CreatePen(PS_SOLID,2,RGB(0,0,0));
CPen* old_pen;
old_pen=pDrawDC->SelectObject(&axis_pen);
//X
pDrawDC->MoveTo(0,translateEnvelopeYToScreenY(0.0f));
pDrawDC->LineTo(m_RCCtrlArea.right,translateEnvelopeYToScreenY(0.0f));
//Y
pDrawDC->MoveTo(translateEnvelopeXToScreenX(0),0);
pDrawDC->LineTo(translateEnvelopeXToScreenX(0),m_RCCtrlArea.bottom);
//draw grid
CPen grid_pen;
grid_pen.CreatePen(PS_SOLID,1,RGB(0,0,0));
pDrawDC->SelectObject(&grid_pen);
//draw control border
pDrawDC->MoveTo(0,0);
pDrawDC->LineTo(m_RCCtrlArea.right-1,0);
pDrawDC->LineTo(m_RCCtrlArea.right-1,m_RCCtrlArea.bottom-1);
pDrawDC->LineTo(0,m_RCCtrlArea.bottom-1);
pDrawDC->LineTo(0,0);
//here grid drawing starts
long x_step=calcEnvelopeXStep();
float y_step=calcEnvelopeYStep();
long x_pos;
float y_pos;
//y
x_pos=(m_lFirstKeyPosition/x_step+1)*x_step;
while(x_pos<m_lLastKeyPosition) {
pDrawDC->MoveTo(translateEnvelopeXToScreenX(x_pos),0);
pDrawDC->LineTo(translateEnvelopeXToScreenX(x_pos),m_RCCtrlArea.bottom);
x_pos+=x_step;
}
//x
y_pos=((float)floor(m_fLowValue/y_step)+1.0f)*y_step;
while(y_pos<m_fHighValue) {
pDrawDC->MoveTo(0,translateEnvelopeYToScreenY(y_pos));
pDrawDC->LineTo(m_RCCtrlArea.right,translateEnvelopeYToScreenY(y_pos));
y_pos+=y_step;
}
//draw curve
CPen cpEnvelope;
cpEnvelope.CreatePen(PS_SOLID,2,m_CurveColor);
pDrawDC->SelectObject(&cpEnvelope);
x_pos=0; //beware that now it is screen, not envelope coordinate
float fEvalRes=m_pEnvelope->evalEnvelope(translateScreenXToSeconds(x_pos));
pDrawDC->MoveTo(x_pos,translateEnvelopeYToScreenY(fEvalRes));
while(x_pos<m_RCCtrlArea.right) {
fEvalRes=m_pEnvelope->evalEnvelope(translateScreenXToSeconds(x_pos));
pDrawDC->LineTo(x_pos,translateEnvelopeYToScreenY(fEvalRes));
x_pos++;
}
//draw keys
if(!(m_bDirtyPositions ||
m_bDirtyValues)) {
long i;
long lNumKeys=m_pEnvelope->getNumKeys();
for(i=0;i<lNumKeys;i++) {
drawKey(i,pDrawDC);
}
}
//draw bottom bar
CBrush white_brush;
white_brush.CreateSolidBrush(RGB(255,255,255));
CRect rcBottom=rcBounds;
rcBottom.top=rcBounds.bottom-CONTROL_BAR_HEIGHT;
pDrawDC->FillRect(rcBottom,&white_brush);
pDrawDC->SelectObject(&grid_pen);
//draw bottom bar border
pDrawDC->MoveTo(0,rcBottom.top);
pDrawDC->LineTo(rcBottom.right-1,rcBottom.top);
pDrawDC->LineTo(rcBottom.right-1,rcBottom.bottom-1);
pDrawDC->LineTo(0,rcBottom.bottom-1);
pDrawDC->LineTo(0,rcBottom.top);
//draw vertical lines and frame numbers every 10 x_steps in bottom bar
CFont cfFrameFont;
CString csFrameString;
cfFrameFont.CreateFont(8,0,0,0,FW_NORMAL,0,0,0,DEFAULT_CHARSET,OUT_DEVICE_PRECIS,
CLIP_DEFAULT_PRECIS,PROOF_QUALITY,FIXED_PITCH,NULL);
pDrawDC->SelectObject(&cfFrameFont);
pDrawDC->SetBkMode(TRANSPARENT);
x_pos=m_lFirstKeyPosition-m_lFirstKeyPosition%(10*x_step)-10*x_step;
while(x_pos<m_lLastKeyPosition) {
if((x_pos%(10*x_step))==0) {
pDrawDC->MoveTo(translateEnvelopeXToScreenX(x_pos),rcBottom.top);
pDrawDC->LineTo(translateEnvelopeXToScreenX(x_pos),rcBottom.bottom);
csFrameString.Format("%d",x_pos);
pDrawDC->TextOut(translateEnvelopeXToScreenX(x_pos),
rcBottom.top,csFrameString);
}
x_pos+=x_step;
}
pDrawDC->SelectObject(old_pen);
pdc->BitBlt(0,0,rcBounds.right,rcBounds.bottom,pDrawDC,0,0,SRCCOPY);
pDrawDC->SelectObject(pOldBitmap);
pDrawDC->DeleteDC();
}
