// inhered interfaces
void
CTfWin::_DisplayFunc()
{
assert(iNrOfEntries);
glClear(GL_COLOR_BUFFER_BIT);
pcTransFunc->_ExportColorMap(&pfColorMap[0], iNrOfEntries);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
if( cHistogram.pfBins.BIsAllocated() )
{
// normalize the coordinate
glTranslatef(-1.0f, -1.0f, -1.0f);
glScalef(2.0f, 2.0f, 2.0f);
float fDomainMin = pcTransFunc->cDomainMin.FGetValue();
float fDomainMax = pcTransFunc->cDomainMax.FGetValue();
float fHistogramMin = cHistogram.cMin.FGetValue();
float fHistogramMax = cHistogram.cMax.FGetValue();
glPushMatrix();
glScalef(1.0f / (float)(fHistogramMax - fHistogramMin), 1.0f, 1.0f);
glTranslatef(-fHistogramMin, 0.0f, 0.0f);
glTranslatef(fDomainMin, 0.0f, 0.0f);
glScalef((fDomainMax - fDomainMin)/(float)iNrOfEntries, 1.0f, 1.0f);
glBegin(GL_QUADS);
for(int i = 0; i < iNrOfEntries; i++)
{
float l, r, b, t;
l = (float)i;
r = (float)i + 1;
b = 0.0f;
t = pfColorMap[i*4 + 3]; // use the alpha channel as the height
glColor3fv(&pfColorMap[i*4]); // setup the color
glVertex2f(l, b);
glVertex2f(r, b);
glVertex2f(r, t);
glVertex2f(l, t);
}
glEnd();
glColor4f(1.0, 1.0, 1.0, 1.0);
_DrawString3D(SZSprintf("%.2e", fDomainMin), 0.0f, 0.5f, 0.0f);
_DrawString3D(SZSprintf("%.2e", fDomainMax), (float)iNrOfEntries, 0.5f, 0.0f);
glPopMatrix();
/////////////////////////////////////////////////////
glPushMatrix();
glScalef(1.0f / (float)(float)cHistogram.pfBins.USize(), 1.0f, 1.0f);
glPushAttrib(GL_LINE_BIT);
glLineWidth(4.0);
glBegin(GL_LINE_STRIP);
glColor4f(1.0, 1.0, 1.0, 1.0);
for(int i = 0; i < (int)cHistogram.pfBins.USize(); i++)
{
glVertex2f((float)i, cHistogram.pfBins[i]);
glVertex2f((float)i + 1.0f, cHistogram.pfBins[i]);
}
glEnd();
glPopAttrib(); // glPushAttrib(GL_LINE_BIT);
glPopMatrix();
_DrawString(SZSprintf("%.2e", fHistogramMin), 0, 2, false);
_DrawString(SZSprintf("%.2e", fHistogramMax), -1, 2, true);
_DrawString(SZSprintf("%.2e", cHistogram.fMaxCount), 0, -16, false);
}
else
{
// normalize the coordinate
glTranslatef(-1.0f, -1.0f, -1.0f);
glScalef(2.0f, 2.0f, 2.0f);
glScalef(1.0f/(float)iNrOfEntries, 1.0f, 1.0f);
// plot the transfer func. as bar chart
// each entry in the TR is a bar
// the height of each bar represents the corresponding alpha
// the color of each bar represents the corresponding color
glBegin(GL_QUADS);
for(int i = 0; i < iNrOfEntries; i++)
{
float l, r, b, t;
l = (float)i;
r = (float)i + 1;
b = 0.0f;
t = pfColorMap[i*4 + 3]; // use the alpha channel as the height
glColor3fv(&pfColorMap[i*4]); // setup the color
glVertex2f(l, b);
glVertex2f(r, b);
glVertex2f(r, t);
glVertex2f(l, t);
}
glEnd();
// plot the transfer func. as lines
for(int c = 0; c < 3; c++) // only plot the RGB channels
{
switch(c)
{
case 0: glColor4f(1.0, 0.0f, 0.0f, 1.0f); break;
case 1: glColor4f(0.0, 1.0f, 0.0f, 1.0f); break;
case 2: glColor4f(0.0, 0.0f, 1.0f, 1.0f); break;
}
glBegin(GL_LINE_STRIP);
for(int i = 0; i < iNrOfEntries; i++)
glVertex2f((float)i, pfColorMap[i*4 + c]);
glEnd();
}
glColor4f(0.0f, 1.0f, 1.0f, 1.0f);
_DrawString(SZSprintf("%.2e", pcTransFunc->cDomainMin.FGetValue()), 0, 0, false);
_DrawString(SZSprintf("%.2e", pcTransFunc->cDomainMax.FGetValue()), -1, 0, true);
}
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void
CTfUi::_DisplayFunc()
{
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
// normalize the coordinate
glTranslatef(-1.0f, -1.0f, -1.0f);
glScalef(2.0f, 2.0f, 2.0f);
// plot the histogram as backgroun
glPushMatrix();
float fDomainMin = pcTransFunc->cDomainMin.FGetValue();
float fDomainMax = pcTransFunc->cDomainMax.FGetValue();
float fHistogramMin = cHistogramMin.FGetValue();
float fHistogramMax = cHistogramMax.FGetValue();
glScalef(1.0f / (float)(fDomainMax - fDomainMin), 1.0f, 1.0f);
glTranslatef(-fDomainMin, 0.0f, 0.0f);
glBegin(GL_QUADS);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
for(int i = 0; i < pfHistogram.num; i++)
{
float l, r, b, t;
l = (float) i / (float) pfHistogram.num * (float)(fHistogramMax - fHistogramMin) + fHistogramMin;
r = (float) (i + 1) / (float) pfHistogram.num * (float)(fHistogramMax - fHistogramMin) + fHistogramMin;
b = 0.0f;
t = pfHistogram[i];
glVertex2f(l, b);
glVertex2f(r, b);
glVertex2f(r, t);
glVertex2f(l, t);
}
glEnd();
glPopMatrix();
glColor4f(0.0f, 1.0f, 1.0f, 1.0f);
_DrawString(SZSprintf("%.2e", pcTransFunc->cDomainMin.FGetValue()), 0, 0, false);
_DrawString(SZSprintf("%.2e", pcTransFunc->cDomainMax.FGetValue()), -1, 0, true);
// plot the transfer func. as lines
for(int c = 0; c < CTransFunc::NR_OF_COLORS; c++)
{
// plot the spline
_PlotSpline(c);
}
// plot the editing spline in thicker line
_PlotSpline(iEditingChannel, true);
// plot the select region if the left mouse is being pressed
if( false == vcMouseEvents.empty() && GLUT_LEFT_BUTTON == vcMouseEvents.begin()->iButton )
{
vector<CMouseEvent>::iterator vcFirstEvevt = vcMouseEvents.begin();
vector<CMouseEvent>::iterator vcLastEvevt = vcMouseEvents.end() - 1;
if( GLUT_LEFT_BUTTON == vcFirstEvevt->iButton )
{
glColor4f(1.0f, 1.0f, 0.0f, 1.0f);
glBegin(GL_LINE_LOOP);
float l, b, r, t;
l = (float)vcFirstEvevt->iX / (float)piViewport[2];
r = (float)vcLastEvevt->iX / (float)piViewport[2];
b = (float)vcFirstEvevt->iY / (float)piViewport[3];
t = (float)vcLastEvevt->iY / (float)piViewport[3];
glVertex2f(l, b);
glVertex2f(r, b);
glVertex2f(r, t);
glVertex2f(l, t);
glEnd();
}
}
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void
ETextEditable::Draw(ERect updateRect)
{
if(!IsVisible()) return;
ERect rect = Frame().OffsetToSelf(E_ORIGIN);
rect.left += fMargins.left;
rect.top += fMargins.top;
rect.right -= fMargins.right;
rect.bottom -= fMargins.bottom;
if(!rect.IsValid()) return;
ERegion clipping;
GetClippingRegion(&clipping);
if(clipping.CountRects() > 0) clipping &= (rect & updateRect);
else clipping = (rect & updateRect);
if(clipping.CountRects() <= 0) return;
e_rgb_color bkColor = e_ui_color(E_DOCUMENT_BACKGROUND_COLOR);
e_rgb_color fgColor = e_ui_color(E_DOCUMENT_TEXT_COLOR);
if(!IsEnabled())
{
bkColor.disable(ViewColor());
fgColor.disable(ViewColor());
}
if(!IsFocusChanging())
{
PushState();
ConstrainClippingRegion(&clipping);
SetDrawingMode(E_OP_COPY);
SetPenSize(0);
SetHighColor(bkColor);
FillRect(rect & updateRect, E_SOLID_HIGH);
PopState();
}
EFont font;
e_font_height fontHeight;
GetFont(&font);
font.GetHeight(&fontHeight);
if(fCount > 0 && !IsFocusChanging())
{
PushState();
ConstrainClippingRegion(&clipping);
float x = 0, y = 0;
if(GetCharLocation(0, &x, &y, &font))
{
SetDrawingMode(E_OP_COPY);
SetPenSize(0);
SetHighColor(fgColor);
SetLowColor(bkColor);
_DrawString(fText, EPoint(x, y));
if(IsEnabled() && IsSelected())
{
char *selectedText = DuplicateText(fSelectStart, fSelectEnd);
if(selectedText != NULL)
{
x = 0; y = 0;
if(GetCharLocation(fSelectStart, &x, &y, &font))
{
DrawSelectedBackground(updateRect);
SetLowColor(e_ui_color(E_DOCUMENT_HIGHLIGHT_COLOR));
_DrawString(selectedText, EPoint(x, y));
}
free(selectedText);
}
}
}
PopState();
}
if(IsEnabled() && IsEditable() && (IsFocus() || IsFocusChanging()))
{
PushState();
ConstrainClippingRegion(&clipping);
DrawCursor();
PopState();
}
if((IsFocus() || IsFocusChanging()) && Window()->IsActivate() && IsEnabled() && (Flags() & E_NAVIGABLE))
{
e_rgb_color color = e_ui_color(E_NAVIGATION_BASE_COLOR);
if(IsFocusChanging() && !IsFocus()) color = e_ui_color(E_DOCUMENT_BACKGROUND_COLOR);
PushState();
ConstrainClippingRegion(&clipping);
SetDrawingMode(E_OP_COPY);
SetPenSize(0);
SetHighColor(color);
StrokeRect(rect, E_SOLID_HIGH);
PopState();
}
}
