109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
// 10 february 2014
|
|
|
|
package ui
|
|
|
|
import (
|
|
"fmt"
|
|
// "syscall"
|
|
"unsafe"
|
|
)
|
|
|
|
var (
|
|
controlFont _HANDLE
|
|
titleFont _HANDLE
|
|
smallTitleFont _HANDLE
|
|
menubarFont _HANDLE
|
|
statusbarFont _HANDLE
|
|
)
|
|
|
|
const (
|
|
_SPI_GETNONCLIENTMETRICS = 0x0029
|
|
_LF_FACESIZE = 32 // from wingdi.h
|
|
)
|
|
|
|
type _LOGFONT struct {
|
|
lfHeight int32
|
|
lfWidth int32
|
|
lfEscapement int32
|
|
lfOrientation int32
|
|
lfWeight int32
|
|
lfItalic byte
|
|
lfUnderline byte
|
|
lfStrikeOut byte
|
|
lfCharSet byte
|
|
lfOutPrecision byte
|
|
lfClipPrecision byte
|
|
lfQuality byte
|
|
lfPitchAndFamily byte
|
|
lfFaceName [_LF_FACESIZE]uint16
|
|
}
|
|
|
|
type _NONCLIENTMETRICS struct {
|
|
cbSize uint32
|
|
iBorderWidth int32 // originally int
|
|
iScrollWidth int32 // originally int
|
|
iScrollHeight int32 // originally int
|
|
iCaptionWidth int32 // originally int
|
|
iCaptionHeight int32 // originally int
|
|
lfCaptionFont _LOGFONT
|
|
iSmCaptionWidth int32 // originally int
|
|
iSmCaptionHeight int32 // originally int
|
|
lfSmCaptionFont _LOGFONT
|
|
iMenuWidth int32 // originally int
|
|
iMenuHeight int32 // originally int
|
|
lfMenuFont _LOGFONT
|
|
lfStatusFont _LOGFONT
|
|
lfMessageFont _LOGFONT
|
|
}
|
|
|
|
var (
|
|
_systemParametersInfo = user32.NewProc("SystemParametersInfoW")
|
|
_createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
|
|
)
|
|
|
|
// TODO the lfMessageFont doesn't seem like the right one for controls but that's all I could find for what people actually use; also I need to return the other ones and check HWND types to make sure I apply the right font to the right thing...
|
|
func getStandardWindowFonts() (err error) {
|
|
var ncm _NONCLIENTMETRICS
|
|
|
|
ncm.cbSize = uint32(unsafe.Sizeof(ncm))
|
|
r1, _, err := _systemParametersInfo.Call(
|
|
uintptr(_SPI_GETNONCLIENTMETRICS),
|
|
uintptr(unsafe.Sizeof(ncm)),
|
|
uintptr(unsafe.Pointer(&ncm)),
|
|
0)
|
|
if r1 == 0 { // failure
|
|
return fmt.Errorf("error getting system parameters: %v", err)
|
|
}
|
|
|
|
getfont := func(which *_LOGFONT, what string) (_HANDLE, error) {
|
|
// TODO does this specify an error?
|
|
r1, _, err = _createFontIndirect.Call(uintptr(unsafe.Pointer(which)))
|
|
if r1 == 0 { // failure
|
|
return _NULL, fmt.Errorf("error getting %s font", what, err)
|
|
}
|
|
return _HANDLE(r1), nil
|
|
}
|
|
|
|
controlFont, err = getfont(&ncm.lfMessageFont, "control")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
titleFont, err = getfont(&ncm.lfCaptionFont, "titlebar")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
smallTitleFont, err = getfont(&ncm.lfSmCaptionFont, "small titlebar")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
menubarFont, err = getfont(&ncm.lfMenuFont, "menubar")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
statusbarFont, err = getfont(&ncm.lfStatusFont, "statusbar")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil // all good
|
|
}
|