diff options
Diffstat (limited to 'printing/units.h')
| -rw-r--r-- | printing/units.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/printing/units.h b/printing/units.h index d23e268..cc61241 100644 --- a/printing/units.h +++ b/printing/units.h @@ -10,6 +10,14 @@ namespace printing { // Length of a thousanth of inches in 0.01mm unit. const int kHundrethsMMPerInch = 2540; +// Length of an inch in CSS's 1pt unit. +// http://dev.w3.org/csswg/css3-values/#absolute-length-units-cm-mm.-in-pt-pc +const int kPointsPerInch = 72; + +// Length of an inch in CSS's 1px unit. +// http://dev.w3.org/csswg/css3-values/#the-px-unit +const int kPixelsPerInch = 96; + // Converts from one unit system to another using integer arithmetics. int ConvertUnit(int value, int old_unit, int new_unit); @@ -22,6 +30,12 @@ int ConvertMilliInchToHundredThousanthMeter(int milli_inch); // Converts from 0.00001 meter unit to 0.001 inch. int ConvertHundredThousanthMeterToMilliInch(int cmm); +// Converts from 1 pixel to 1 point using integers. +int ConvertPixelsToPoint(int pixels); + +// Converts from 1 pixel to 1 point using doubles. +double ConvertPixelsToPointDouble(double pixels); + } // namespace printing #endif // PRINTING_UNITS_H_ |