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Refactor (windows).

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This commit is contained in:
Nuno Cruces 2021-04-09 00:55:49 +01:00
parent a366be75f2
commit a16177f604
2 changed files with 177 additions and 177 deletions
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176
entry_windows.go
View File

@ -27,28 +27,17 @@ func password(opts options) (string, string, bool, error) {
}
var (
registerClassEx = user32.NewProc("RegisterClassExW")
unregisterClass = user32.NewProc("UnregisterClassW")
createWindowEx = user32.NewProc("CreateWindowExW")
destroyWindow = user32.NewProc("DestroyWindow")
isDialogMessage = user32.NewProc("IsDialogMessageW")
translateMessage = user32.NewProc("TranslateMessage")
dispatchMessage = user32.NewProc("DispatchMessageW")
postQuitMessage = user32.NewProc("PostQuitMessage")
defWindowProc = user32.NewProc("DefWindowProcW")
getWindowRect = user32.NewProc("GetWindowRect")
setWindowPos = user32.NewProc("SetWindowPos")
setFocus = user32.NewProc("SetFocus")
showWindow = user32.NewProc("ShowWindow")
systemParametersInfo = user32.NewProc("SystemParametersInfoW")
getSystemMetrics = user32.NewProc("GetSystemMetrics")
getWindowDC = user32.NewProc("GetWindowDC")
releaseDC = user32.NewProc("ReleaseDC")
getDpiForWindow = user32.NewProc("GetDpiForWindow")
deleteObject = gdi32.NewProc("DeleteObject")
getDeviceCaps = gdi32.NewProc("GetDeviceCaps")
createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
registerClassEx = user32.NewProc("RegisterClassExW")
unregisterClass = user32.NewProc("UnregisterClassW")
createWindowEx = user32.NewProc("CreateWindowExW")
destroyWindow = user32.NewProc("DestroyWindow")
postQuitMessage = user32.NewProc("PostQuitMessage")
defWindowProc = user32.NewProc("DefWindowProcW")
getWindowRect = user32.NewProc("GetWindowRect")
setWindowPos = user32.NewProc("SetWindowPos")
setFocus = user32.NewProc("SetFocus")
showWindow = user32.NewProc("ShowWindow")
getSystemMetrics = user32.NewProc("GetSystemMetrics")
)
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-wndclassexw
@ -67,121 +56,7 @@ type _WNDCLASSEX struct {
IconSm uintptr
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-msg
type _MSG struct {
Owner syscall.Handle
Message uint32
WParam uintptr
LParam uintptr
Time uint32
Pt _POINT
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-nonclientmetricsw
type _NONCLIENTMETRICS struct {
Size uint32
BorderWidth int32
ScrollWidth int32
ScrollHeight int32
CaptionWidth int32
CaptionHeight int32
CaptionFont _LOGFONT
SmCaptionWidth int32
SmCaptionHeight int32
SmCaptionFont _LOGFONT
MenuWidth int32
MenuHeight int32
MenuFont _LOGFONT
StatusFont _LOGFONT
MessageFont _LOGFONT
}
// https://docs.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-logfontw
type _LOGFONT struct {
Height int32
Width int32
Escapement int32
Orientation int32
Weight int32
Italic byte
Underline byte
StrikeOut byte
CharSet byte
OutPrecision byte
ClipPrecision byte
Quality byte
PitchAndFamily byte
FaceName [32]uint16
}
// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-point
type _POINT struct {
x, y int32
}
// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-rect
type _RECT struct {
left int32
top int32
right int32
bottom int32
}
type dpi uintptr
func getDPI(wnd uintptr) dpi {
var res uintptr
if wnd != 0 && getDpiForWindow.Find() == nil {
res, _, _ = getDpiForWindow.Call(wnd)
} else if dc, _, _ := getWindowDC.Call(wnd); dc != 0 {
res, _, _ = getDeviceCaps.Call(dc, 90) // LOGPIXELSY
releaseDC.Call(0, dc)
}
if res == 0 {
return 96 // USER_DEFAULT_SCREEN_DPI
}
return dpi(res)
}
func (d dpi) Scale(dim uintptr) uintptr {
if d == 0 {
return dim
}
return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
}
type font struct {
handle uintptr
face _LOGFONT
}
func getFont() font {
var metrics _NONCLIENTMETRICS
metrics.Size = uint32(unsafe.Sizeof(metrics))
systemParametersInfo.Call(0x29, // SPI_GETNONCLIENTMETRICS
unsafe.Sizeof(metrics), uintptr(unsafe.Pointer(&metrics)), 0)
return font{face: metrics.MessageFont}
}
func (f *font) ForDPI(dpi dpi) uintptr {
if h := -int32(dpi.Scale(12)); f.handle == 0 || f.face.Height != h {
f.Delete()
f.face.Height = h
f.handle, _, _ = createFontIndirect.Call(uintptr(unsafe.Pointer(&f.face)))
}
return f.handle
}
func (f *font) Delete() {
if f.handle != 0 {
deleteObject.Call(f.handle)
f.handle = 0
}
}
func getWindowTextString(wnd uintptr) string {
func getWindowString(wnd uintptr) string {
len, _, _ := getWindowTextLength.Call(wnd)
buf := make([]uint16, len+1)
getWindowText.Call(wnd, uintptr(unsafe.Pointer(&buf[0])), len+1)
@ -215,31 +90,6 @@ func registerClass(instance, proc uintptr) (uintptr, error) {
return ret, err
}
// https://docs.microsoft.com/en-us/windows/win32/winmsg/using-messages-and-message-queues
func messageLoop(wnd uintptr) error {
getMessage := getMessage.Addr()
isDialogMessage := isDialogMessage.Addr()
translateMessage := translateMessage.Addr()
dispatchMessage := dispatchMessage.Addr()
for {
var msg _MSG
ret, _, err := syscall.Syscall6(getMessage, 4, uintptr(unsafe.Pointer(&msg)), 0, 0, 0, 0, 0)
if int32(ret) == -1 {
return err
}
if ret == 0 {
return nil
}
ret, _, _ = syscall.Syscall(isDialogMessage, 2, wnd, uintptr(unsafe.Pointer(&msg)), 0)
if ret == 0 {
syscall.Syscall(translateMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
syscall.Syscall(dispatchMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
}
}
}
func editBox(title, text string, opts options) (out string, ok bool, err error) {
var wnd, textCtl, editCtl uintptr
var okBtn, cancelBtn, extraBtn uintptr
@ -283,7 +133,7 @@ func editBox(title, text string, opts options) (out string, ok bool, err error)
default:
return 1
case 1, 6: // IDOK, IDYES
out = getWindowTextString(editCtl)
out = getWindowString(editCtl)
ok = true
case 2: // IDCANCEL
case 7: // IDNO

178
util_windows.go
View File

@ -22,6 +22,10 @@ var (
commDlgExtendedError = comdlg32.NewProc("CommDlgExtendedError")
deleteObject = gdi32.NewProc("DeleteObject")
getDeviceCaps = gdi32.NewProc("GetDeviceCaps")
createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
getModuleHandle = kernel32.NewProc("GetModuleHandleW")
getCurrentThreadId = kernel32.NewProc("GetCurrentThreadId")
getConsoleWindow = kernel32.NewProc("GetConsoleWindow")
@ -33,9 +37,12 @@ var (
getMessage = user32.NewProc("GetMessageW")
sendMessage = user32.NewProc("SendMessageW")
isDialogMessage = user32.NewProc("IsDialogMessageW")
dispatchMessage = user32.NewProc("DispatchMessageW")
translateMessage = user32.NewProc("TranslateMessage")
getClassName = user32.NewProc("GetClassNameW")
setWindowsHookEx = user32.NewProc("SetWindowsHookExW")
unhookWindowsHookEx = user32.NewProc("UnhookWindowsHookEx")
setWindowsHookEx = user32.NewProc("SetWindowsHookExW")
callNextHookEx = user32.NewProc("CallNextHookEx")
enumWindows = user32.NewProc("EnumWindows")
enumChildWindows = user32.NewProc("EnumChildWindows")
@ -45,8 +52,20 @@ var (
setForegroundWindow = user32.NewProc("SetForegroundWindow")
getWindowThreadProcessId = user32.NewProc("GetWindowThreadProcessId")
setThreadDpiAwarenessContext = user32.NewProc("SetThreadDpiAwarenessContext")
getDpiForWindow = user32.NewProc("GetDpiForWindow")
releaseDC = user32.NewProc("ReleaseDC")
getWindowDC = user32.NewProc("GetWindowDC")
systemParametersInfo = user32.NewProc("SystemParametersInfoW")
)
func intptr(i int64) uintptr {
return uintptr(i)
}
func strptr(s string) uintptr {
return uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(s)))
}
func setup() context.CancelFunc {
var hwnd uintptr
enumWindows.Call(syscall.NewCallback(func(wnd, lparam uintptr) uintptr {
@ -97,15 +116,6 @@ func commDlgError() error {
}
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-cwpretstruct
type _CWPRETSTRUCT struct {
Result uintptr
LParam uintptr
WParam uintptr
Message uint32
Wnd uintptr
}
func hookDialog(ctx context.Context, initDialog func(wnd uintptr)) (unhook context.CancelFunc, err error) {
if ctx != nil && ctx.Err() != nil {
return nil, ctx.Err()
@ -174,12 +184,152 @@ func hookDialogTitle(ctx context.Context, title *string) (unhook context.CancelF
return hookDialog(ctx, init)
}
func strptr(s string) uintptr {
return uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(s)))
type dpi uintptr
func getDPI(wnd uintptr) dpi {
var res uintptr
if wnd != 0 && getDpiForWindow.Find() == nil {
res, _, _ = getDpiForWindow.Call(wnd)
} else if dc, _, _ := getWindowDC.Call(wnd); dc != 0 {
res, _, _ = getDeviceCaps.Call(dc, 90) // LOGPIXELSY
releaseDC.Call(0, dc)
}
if res == 0 {
return 96 // USER_DEFAULT_SCREEN_DPI
}
return dpi(res)
}
func intptr(i int64) uintptr {
return uintptr(i)
func (d dpi) Scale(dim uintptr) uintptr {
if d == 0 {
return dim
}
return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
}
type font struct {
handle uintptr
logical _LOGFONT
}
func getFont() font {
var metrics _NONCLIENTMETRICS
metrics.Size = uint32(unsafe.Sizeof(metrics))
systemParametersInfo.Call(0x29, // SPI_GETNONCLIENTMETRICS
unsafe.Sizeof(metrics), uintptr(unsafe.Pointer(&metrics)), 0)
return font{logical: metrics.MessageFont}
}
func (f *font) ForDPI(dpi dpi) uintptr {
if h := -int32(dpi.Scale(12)); f.handle == 0 || f.logical.Height != h {
f.Delete()
f.logical.Height = h
f.handle, _, _ = createFontIndirect.Call(uintptr(unsafe.Pointer(&f.logical)))
}
return f.handle
}
func (f *font) Delete() {
if f.handle != 0 {
deleteObject.Call(f.handle)
f.handle = 0
}
}
// https://docs.microsoft.com/en-us/windows/win32/winmsg/using-messages-and-message-queues
func messageLoop(wnd uintptr) error {
getMessage := getMessage.Addr()
isDialogMessage := isDialogMessage.Addr()
translateMessage := translateMessage.Addr()
dispatchMessage := dispatchMessage.Addr()
for {
var msg _MSG
ret, _, err := syscall.Syscall6(getMessage, 4, uintptr(unsafe.Pointer(&msg)), 0, 0, 0, 0, 0)
if int32(ret) == -1 {
return err
}
if ret == 0 {
return nil
}
ret, _, _ = syscall.Syscall(isDialogMessage, 2, wnd, uintptr(unsafe.Pointer(&msg)), 0)
if ret == 0 {
syscall.Syscall(translateMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
syscall.Syscall(dispatchMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
}
}
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-cwpretstruct
type _CWPRETSTRUCT struct {
Result uintptr
LParam uintptr
WParam uintptr
Message uint32
Wnd uintptr
}
// https://docs.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-logfontw
type _LOGFONT struct {
Height int32
Width int32
Escapement int32
Orientation int32
Weight int32
Italic byte
Underline byte
StrikeOut byte
CharSet byte
OutPrecision byte
ClipPrecision byte
Quality byte
PitchAndFamily byte
FaceName [32]uint16
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-nonclientmetricsw
type _NONCLIENTMETRICS struct {
Size uint32
BorderWidth int32
ScrollWidth int32
ScrollHeight int32
CaptionWidth int32
CaptionHeight int32
CaptionFont _LOGFONT
SmCaptionWidth int32
SmCaptionHeight int32
SmCaptionFont _LOGFONT
MenuWidth int32
MenuHeight int32
MenuFont _LOGFONT
StatusFont _LOGFONT
MessageFont _LOGFONT
}
// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-msg
type _MSG struct {
Owner syscall.Handle
Message uint32
WParam uintptr
LParam uintptr
Time uint32
Pt _POINT
}
// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-point
type _POINT struct {
x, y int32
}
// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-rect
type _RECT struct {
left int32
top int32
right int32
bottom int32
}
// https://github.com/wine-mirror/wine/blob/master/include/unknwn.idl