Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-26 19:55:39 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1548612 Part 4 - Add a macro for converting dialog units to screen pixels. r=agashlin

Browse Source 
We typically want to define sizes of elements in the stub installer in terms of
dialog units because those are independent of DPI. But sometimes we need to do
some calculations or invoke some API that needs pixels. So this function takes
a number of dialog units and an axis (because dialog units are not square) and
converts them to screen pixels using MapDialogRect.

Depends on D31141

Differential Revision: https://phabricator.services.mozilla.com/D31142

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Matt Howell 2019-05-21 16:12:45 +00:00
parent aa4f33994d
commit 988d04d56e
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
toolkit/mozapps/installer/windows/nsis/common.nsh
View File

@ -8350,6 +8350,40 @@ end:
!endif
!macroend
/**
* Convert a number of dialog units to a number of pixels.
*
* _DU Number of dialog units to convert
* _AXIS Which axis you want to convert a value along, X or Y
* _RV Register or variable to return the number of pixels in
*/
!macro _DialogUnitsToPixels _DU _AXIS _RV
Push $0
Push $1
; The dialog units value might be a string ending with a 'u',
; so convert it to a number.
IntOp $0 "${_DU}" + 0
!if ${_AXIS} == 'Y'
System::Call '*(i 0, i 0, i 0, i r0) i .r1'
System::Call 'user32::MapDialogRect(p $HWNDPARENT, p r1)'
System::Call '*$1(i, i, i, i . r0)'
!else if ${_AXIS} == 'X'
System::Call '*(i 0, i 0, i r0, i 0) i .r1'
System::Call 'user32::MapDialogRect(p $HWNDPARENT, p r1)'
System::Call '*$1(i, i, i . r0, i)'
!else
!error "Invalid axis ${_AXIS} passed to DialogUnitsToPixels; please use X or Y"
!endif
System::Free $1
Pop $1
Exch $0
Pop ${_RV}
!macroend
!define DialogUnitsToPixels "!insertmacro _DialogUnitsToPixels"
/**
* Gets the elapsed time in seconds between two values in milliseconds stored as
* an int64. The caller will typically get the millisecond values using