以QTableView举例,QTableWidget使用相同
int CQTTableViewPageSwitch::pageCount(QTableView *p)//QTableView 总页数
{
if(p == NULL) return -1;
int rowCount = p->model()->rowCount();
int rowHeight = p->rowHeight(0);
int tableViewHeight = p->height();
int rowCountPerPage = tableViewHeight/rowHeight-1;//每页显示行数
int ret = rowCount/rowCountPerPage;
int tem = rowCount%rowCountPerPage;
if (tem != 0) ret++;
return ret;
}
BOOL CQTTableViewPageSwitch::pageTo(QTableView *p, int pageNO)//翻到指定页
{
if(p == NULL) return false;
int maxPage = pageCount(p);
if(pageNO > maxPage) return false;
int rowCount = p->model()->rowCount();
int rowHeight = p->rowHeight(0);
int tableViewHeight = p->height();
int rowCountPerPage = tableViewHeight/rowHeight-1; //每页显示行数
int canNotViewCount = rowCount-rowCountPerPage; //看不见的行数
if(canNotViewCount == 0) return false;
int maxValue = p->verticalScrollBar()->maximum(); // 当前SCROLLER最大显示值
if(maxValue == 0) return false;
int pageValue = (maxValue*rowCountPerPage)/canNotViewCount;
p->verticalScrollBar()->setSliderPosition(pageValue*(pageNO-1));
}
BOOL CQTTableViewPageSwitch::pageUp(QTableView *p,BOOL isLoop)//上翻
{
if(p == NULL) return false;
int rowCount = p->model()->rowCount();
int rowHeight = p->rowHeight(0);
int tableViewHeight = p->height();
int rowCountPerPage = tableViewHeight/rowHeight-1; //每页显示行数
int canNotViewCount = rowCount-rowCountPerPage; //看不见的行数
if(canNotViewCount == 0) return false;
int maxValue = p->verticalScrollBar()->maximum(); // 当前SCROLLER最大显示值
if(maxValue == 0) return false;
int pageValue = (maxValue*rowCountPerPage)/canNotViewCount;
int nCurScroller = p->verticalScrollBar()->value(); //获得当前scroller值
if(nCurScroller>0)
p->verticalScrollBar()->setSliderPosition(nCurScroller-pageValue);
else
{
if(isLoop == TRUE)
p->verticalScrollBar()->setSliderPosition(maxValue);
}
}
BOOL CQTTableViewPageSwitch::pageDown(QTableView *p,BOOL isLoop)//下翻
{
if(p == NULL) return false;
int rowCount = p->model()->rowCount();
int rowHeight = p->rowHeight(0);
int tableViewHeight = p->height();
int rowCountPerPage = tableViewHeight/rowHeight-1; //每页显示行数
int canNotViewCount = rowCount-rowCountPerPage; //看不见的行数
if(canNotViewCount == 0)
return false;
int maxValue = p->verticalScrollBar()->maximum(); // 当前SCROLLER最大显示值
if(maxValue == 0)
return false;
int pageValue = (maxValue*rowCountPerPage)/canNotViewCount;
int nCurScroller = p->verticalScrollBar()->value(); //获得当前scroller值
if(nCurScroller<maxValue)
p->verticalScrollBar()->setSliderPosition(nCurScroller+pageValue);
else
{
if(isLoop == TRUE)
p->verticalScrollBar()->setSliderPosition(0);
}
}
BOOL CQTTableViewPageSwitch::pageHome(QTableView *p)//首页
{
if(p == NULL) return false;
int maxValue = p->verticalScrollBar()->maximum(); // 当前SCROLLER最大显示值
if(maxValue == 0) return false;
p->verticalScrollBar()->setSliderPosition(0);
}
BOOL CQTTableViewPageSwitch::pageEnd(QTableView *p)//末页
{
if(p == NULL) return false;
int maxValue = p->verticalScrollBar()->maximum(); // 当前SCROLLER最大显示值
if(maxValue == 0) return false;
p->verticalScrollBar()->setSliderPosition(maxValue);
}