internal void Zoom(int wheelIndex)
{
//每次滚动的该度为120 在这里规定 每次增加/减少0.01
double zoomResult = zoomRate;
if (wheelIndex > 0)
{
zoomResult += 0.02;
}
else
{
zoomResult -= 0.02;
}
if (zoomResult == 1)
{
curZoomModule = ZoomModule.NormalPage;
}
else if (zoomResult == SignlePageRatio)
{
curZoomModule = ZoomModule.SinglePage;
}
else if (zoomResult >= 0.48 && zoomResult < 2.02)
{
curZoomModule = ZoomModule.ZoomPage;
zoomRate = zoomResult;
}
}
/// <summary>
/// 改变当前显示模式为前一个显示模式
/// </summary>
internal void ChangeZoomModule()
{
if (curZoomModule != ZoomModule.NormalPage)
{
curZoomModule = ZoomModule.NormalPage;
}
else
{
if (recordZoom.Count == 1)
{
curZoomModule = ZoomModule.SinglePage;
}
else
{
ModuleAndRate preModuleAndRate = recordZoom[recordZoom.Count - 2];
if (preModuleAndRate.zoomModule == ZoomModule.ZoomPage && preModuleAndRate.zoomRate != 1)
{
curZoomModule = preModuleAndRate.zoomModule;
_zoomRate = preModuleAndRate.zoomRate;
}
else
{
curZoomModule = ZoomModule.SinglePage;
}
}
}
}
public ModuleAndRate(ZoomModule _zoomModule, double _zoomRate)
{
zoomModule = _zoomModule;
zoomRate = _zoomRate;
}