3.3.2.31. Class ZoomRatio

• Defined in File types.h

3.3.2.31.1. Class Documentation

class ZoomRatio

Data class that represents zoom ratio as input_resolution/output_resolution.

Public Functions

ZoomRatio()

Instantiate a zoom ratio 1:1.

~ZoomRatio()

ZoomRatio(const ZoomRatio&)

ZoomRatio(ZoomRatio&&)

ZoomRatio &operator=(const ZoomRatio&)

ZoomRatio &operator=(ZoomRatio&&)

int input_resolution() const

int output_resolution() const

double ratio() const

bool IsRealZoom() const

Public Static Functions

static ZoomRatio Create(const std::string &ratio_string)

Create an instance from a formatted string (input_resolution:output_resolution)

Return

zoom ratio

Parameters

• ratio_string: should be formatted as “input_resolution:output_resolution”

Exceptions

• sirius::Exception: if string format or ratio is invalid

static ZoomRatio Create(int input_resolution, int output_resolution = 1)

Zoom ratio as input_resolution/output_resolution Reduce the ratio.

Return

zoom ratio

Parameters

• input_resolution: numerator of the ratio
• output_resolution: denominator of the ratio

Exceptions

• sirius::Exception: if ratio is invalid
• std::invalid_argument: if conversion from string to int failed