Esempio n. 1
0
void Browser::lastPage()
{
    unsigned long offset;

    if(this->page_size > this->file_size)
	offset = 0;
    else
	offset = this->file_size - this->page_size;
    this->loadBuffer(offset);

    //
    // Put the slider at the end.
    //
    int max;
    int value;
    int slider_size;
    int inc;
    int page_inc;

    XtVaGetValues(this->vsb, 
		  XmNmaximum, &max,
		  NULL);

    XmScrollBarGetValues(this->vsb, &value, &slider_size, &inc, &page_inc);
    XmScrollBarSetValues(this->vsb, max-slider_size, 
			 slider_size, inc, page_inc, True);
    this->updateOffsets(0);
}
Esempio n. 2
0
void Browser::adjustScrollBar(Boolean top)
{
    int min;
    int max;
    int value;
    int slider_size;
    int inc;
    int page_inc;

    //
    // The idea is to place the slide bar 1/2 a "slider_size" away from the end.
    //
    XtVaGetValues(this->vsb, 
		  XmNminimum, &min,
		  XmNmaximum, &max,
		  NULL);
    XmScrollBarGetValues(this->vsb, &value, &slider_size, &inc, &page_inc);

    if(top)
    {
	value = min + slider_size/2;
	    if(this->page_start == 0) value = min;
	if(value > max - slider_size) value = max - slider_size;
    }
    else
    {
	value = max - slider_size/2 - slider_size;
	if(value > max - slider_size) value = max - slider_size;
	if(this->page_start == this->file_size - this->page_size) 
	    value = max - slider_size;
	if(value < min) value = min;
    }
	
    XmScrollBarSetValues(this->vsb, value, slider_size, inc, page_inc, True);
}
Esempio n. 3
0
static void _UI2DViewVerScrollBarValueChangedCBK(Widget widget, UI2DView *view, XmScrollBarCallbackStruct *callData) {
    int value, slider, incr, pgIncr;
    double deltaY, freeLength;
    DBRegion dataEXT = (UIDataset())->Extent(), viewEXT = view->Extent();

    XmScrollBarGetValues(widget, &value, &slider, &incr, &pgIncr);

    freeLength = (dataEXT.UpperRight.Y - dataEXT.LowerLeft.Y) - (viewEXT.UpperRight.Y - viewEXT.LowerLeft.Y);

    deltaY = slider == 100 ? 0 : freeLength * value / (100.0 - slider);
    deltaY -= dataEXT.UpperRight.Y - viewEXT.UpperRight.Y;

    viewEXT.LowerLeft.Y = viewEXT.LowerLeft.Y - deltaY;
    viewEXT.UpperRight.Y = viewEXT.UpperRight.Y - deltaY;

    view->Set(viewEXT);
}