bool TrackBar::OnEventKeyboard(Event event,WPARAM wparam,LPARAM lparam)
{
if(!GetVisible() || !GetEnabled())
return false;
switch(event)
{
case EventKeyDown:
if(wparam == VK_DOWN || wparam == VK_LEFT)
{
if(GetTrackValue())
SetTrackValue(GetTrackValue() - 1);
if(GetParent())
GetParent()->OnEvent(EventChildCommand,ControlEventTrackChange,(LPARAM)this);
return true;
}
if(wparam == VK_UP || wparam == VK_RIGHT)
{
if(GetTrackValue() < GetTrackRange())
SetTrackValue(GetTrackValue() + 1);
if(GetParent())
GetParent()->OnEvent(EventChildCommand,ControlEventTrackChange,(LPARAM)this);
return true;
}
if(wparam == VK_HOME)
{
SetTrackValue(0);
if(GetParent())
GetParent()->OnEvent(EventChildCommand,ControlEventTrackChange,(LPARAM)this);
return true;
}
if(wparam == VK_END)
{
SetTrackValue(GetTrackRange());
if(GetParent())
GetParent()->OnEvent(EventChildCommand,ControlEventTrackChange,(LPARAM)this);
return true;
}
break;
}
return Control::OnEventKeyboard(event,wparam,lparam);
}
Rect TrackBar::GetTrackBox(void) const
{
Rect box = GetBoundingBox();
Size size(8,box.GetHeight());
return Rect(Point(box.left + box.GetWidth() * GetTrackValue() / GetTrackRange() - size.cx / 2,box.top + box.GetHeight() / 2 - size.cy / 2 + 2),size);
}
bool TrackBar::OnRender(void)
{
if(!GetVisible())
return false;
Rect box = GetBoundingBox();
GetKernel()->GetUserInterface()->DrawTrackBar(box,GetTrackBox(),GetTrackRange(),GetTrackValue(),false,GetEnabled(),GetFocused());
return Control::OnRender();
}
int ReadGPX(const char* File, struct GPSTrack* Track)
{
/* Init the libxml library. Also checks version. */
LIBXML_TEST_VERSION
xmlDocPtr GPXData;
/* Read the GPX data from file. */
GPXData = xmlParseFile(File);
if (GPXData == NULL)
{
fprintf(stderr, _("Failed to parse GPX data from %s.\n"), File);
return 0;
}
/* Now grab the "root" node. */
xmlNodePtr GPXRoot;
GPXRoot = xmlDocGetRootElement(GPXData);
if (GPXRoot == NULL)
{
fprintf(stderr, _("GPX file has no root. Not healthy.\n"));
xmlFreeDoc(GPXData);
xmlCleanupParser();
return 0;
}
/* Check that this is indeed a GPX - the root node
* should be "gpx". */
if (strcmp((const char *)GPXRoot->name, "gpx") == 0)
{
/* Ok, it is a GPX file. */
} else {
/* Not valid. */
fprintf(stderr, _("Invalid GPX file.\n"));
xmlFreeDoc(GPXData);
xmlCleanupParser();
return 0;
}
/* Now comes the messy part... walking the tree to find
* what we want.
* I've chosen to do it with two functions, one of which
* is recursive, rather than a clever inside-this-function
* walk the tree thing.
*
* We start by calling the recursive function to look for
* <trkseg> tags, and then that function calls another
* when it has found one... this sub function then
* hauls out the <trkpt> tags with the actual data.
* Messy, convoluted, but it seems to work... */
/* As to where to store the data? Again, its messy.
* We maintain two global vars, FirstPoint and LastPoint.
* FirstPoint points to the first GPSPoint done, and
* LastPoint is the last point done, used for the next
* point... we use this to build a singly-linked list. */
/* (I think I'll just be grateful for the work that libxml
* puts in for me... imagine having to write an XML parser!
* Nasty.) */
/* Before we go into this function, we also setlocale to "C".
* The GPX def indicates that the decimal separator should be
* ".", but certain locales specify otherwise. Which has caused issues.
* So we set the locale for this function, and then revert it.
*/
FirstPoint = NULL;
LastPoint = NULL;
char* OldLocale = setlocale(LC_NUMERIC, "C");
FindTrackSeg(GPXRoot);
setlocale(LC_NUMERIC, OldLocale);
/* Clean up stuff for the XML library. */
xmlFreeDoc(GPXData);
xmlCleanupParser();
Track->Points = FirstPoint;
/* Find the time range for this track */
GetTrackRange(Track);
return 1;
}
bool TrackBar::OnEventMouse(Event event,WPARAM wparam,LPARAM lparam)
{
if(!GetVisible() || !GetEnabled())
return false;
switch(event)
{
case EventLeftButtonDown:
if(PointInTrack(*(Point*)wparam))
{
if(!GetFocused())
Focus();
mTracking = true;
mTrackingValue = mValue;
mTrackingPosition = ((Point*)wparam)->x - GetTrackBox().GetCenter().x;
SetCapture(GetKernel()->GetWindowHandle());
return true;
}
if(PointIn(*(Point*)wparam))
{
if(!GetFocused())
Focus();
if(((Point*)wparam)->x > GetTrackBox().GetCenter().x)
{
if(GetTrackValue() < GetTrackRange())
SetTrackValue(GetTrackValue() + 1);
}
else
{
if(GetTrackValue())
SetTrackValue(GetTrackValue() - 1);
}
return true;
}
break;
case EventLeftButtonUp:
if(mTracking)
{
mTracking = false;
ReleaseCapture();
return true;
}
break;
case EventMouseMove:
if(mTracking)
{
Point delta = *(Point*)wparam;
delta.x -= GetScreenPosition().x + mTrackingPosition;
float val = (float)GetBoundingBox().GetWidth() / (float)GetTrackRange();
if((float)delta.x / val > (float)GetTrackRange())
SetTrackValue(GetTrackRange());
else if((float)delta.x / val < 0.0f)
SetTrackValue(0);
else
SetTrackValue((float)delta.x / val);
if(GetParent())
GetParent()->OnEvent(EventChildCommand,ControlEventTrackChange,(LPARAM)this);
}
break;
}
return Control::OnEventMouse(event,wparam,lparam);
}
