Refactor (windows).
This commit is contained in:
Nuno Cruces
parent
a366be75f2
commit
a16177f604
2 changed files with 177 additions and 177 deletions
154
entry_windows.go
154
entry_windows.go
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@ -31,24 +31,13 @@ var (
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unregisterClass = user32.NewProc("UnregisterClassW")
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createWindowEx = user32.NewProc("CreateWindowExW")
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destroyWindow = user32.NewProc("DestroyWindow")
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isDialogMessage = user32.NewProc("IsDialogMessageW")
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translateMessage = user32.NewProc("TranslateMessage")
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dispatchMessage = user32.NewProc("DispatchMessageW")
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postQuitMessage = user32.NewProc("PostQuitMessage")
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defWindowProc = user32.NewProc("DefWindowProcW")
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getWindowRect = user32.NewProc("GetWindowRect")
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setWindowPos = user32.NewProc("SetWindowPos")
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setFocus = user32.NewProc("SetFocus")
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showWindow = user32.NewProc("ShowWindow")
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systemParametersInfo = user32.NewProc("SystemParametersInfoW")
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getSystemMetrics = user32.NewProc("GetSystemMetrics")
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getWindowDC = user32.NewProc("GetWindowDC")
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releaseDC = user32.NewProc("ReleaseDC")
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getDpiForWindow = user32.NewProc("GetDpiForWindow")
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deleteObject = gdi32.NewProc("DeleteObject")
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getDeviceCaps = gdi32.NewProc("GetDeviceCaps")
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createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
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)
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-wndclassexw
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@ -67,121 +56,7 @@ type _WNDCLASSEX struct {
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IconSm uintptr
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-msg
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type _MSG struct {
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Owner syscall.Handle
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Message uint32
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WParam uintptr
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LParam uintptr
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Time uint32
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Pt _POINT
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-nonclientmetricsw
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type _NONCLIENTMETRICS struct {
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Size uint32
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BorderWidth int32
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ScrollWidth int32
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ScrollHeight int32
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CaptionWidth int32
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CaptionHeight int32
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CaptionFont _LOGFONT
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SmCaptionWidth int32
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SmCaptionHeight int32
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SmCaptionFont _LOGFONT
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MenuWidth int32
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MenuHeight int32
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MenuFont _LOGFONT
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StatusFont _LOGFONT
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MessageFont _LOGFONT
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-logfontw
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type _LOGFONT struct {
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Height int32
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Width int32
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Escapement int32
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Orientation int32
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Weight int32
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Italic byte
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Underline byte
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StrikeOut byte
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CharSet byte
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OutPrecision byte
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ClipPrecision byte
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Quality byte
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PitchAndFamily byte
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FaceName [32]uint16
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-point
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type _POINT struct {
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x, y int32
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-rect
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type _RECT struct {
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left int32
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top int32
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right int32
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bottom int32
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}
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type dpi uintptr
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func getDPI(wnd uintptr) dpi {
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var res uintptr
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if wnd != 0 && getDpiForWindow.Find() == nil {
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res, _, _ = getDpiForWindow.Call(wnd)
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} else if dc, _, _ := getWindowDC.Call(wnd); dc != 0 {
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res, _, _ = getDeviceCaps.Call(dc, 90) // LOGPIXELSY
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releaseDC.Call(0, dc)
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}
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if res == 0 {
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return 96 // USER_DEFAULT_SCREEN_DPI
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}
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return dpi(res)
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}
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func (d dpi) Scale(dim uintptr) uintptr {
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if d == 0 {
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return dim
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}
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return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
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}
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type font struct {
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handle uintptr
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face _LOGFONT
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}
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func getFont() font {
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var metrics _NONCLIENTMETRICS
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metrics.Size = uint32(unsafe.Sizeof(metrics))
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systemParametersInfo.Call(0x29, // SPI_GETNONCLIENTMETRICS
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unsafe.Sizeof(metrics), uintptr(unsafe.Pointer(&metrics)), 0)
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return font{face: metrics.MessageFont}
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}
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func (f *font) ForDPI(dpi dpi) uintptr {
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if h := -int32(dpi.Scale(12)); f.handle == 0 || f.face.Height != h {
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f.Delete()
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f.face.Height = h
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f.handle, _, _ = createFontIndirect.Call(uintptr(unsafe.Pointer(&f.face)))
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}
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return f.handle
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}
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func (f *font) Delete() {
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if f.handle != 0 {
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deleteObject.Call(f.handle)
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f.handle = 0
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}
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}
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func getWindowTextString(wnd uintptr) string {
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func getWindowString(wnd uintptr) string {
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len, _, _ := getWindowTextLength.Call(wnd)
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buf := make([]uint16, len+1)
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getWindowText.Call(wnd, uintptr(unsafe.Pointer(&buf[0])), len+1)
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@ -215,31 +90,6 @@ func registerClass(instance, proc uintptr) (uintptr, error) {
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return ret, err
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}
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// https://docs.microsoft.com/en-us/windows/win32/winmsg/using-messages-and-message-queues
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func messageLoop(wnd uintptr) error {
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getMessage := getMessage.Addr()
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isDialogMessage := isDialogMessage.Addr()
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translateMessage := translateMessage.Addr()
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dispatchMessage := dispatchMessage.Addr()
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for {
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var msg _MSG
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ret, _, err := syscall.Syscall6(getMessage, 4, uintptr(unsafe.Pointer(&msg)), 0, 0, 0, 0, 0)
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if int32(ret) == -1 {
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return err
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}
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if ret == 0 {
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return nil
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}
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ret, _, _ = syscall.Syscall(isDialogMessage, 2, wnd, uintptr(unsafe.Pointer(&msg)), 0)
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if ret == 0 {
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syscall.Syscall(translateMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
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syscall.Syscall(dispatchMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
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}
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}
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}
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func editBox(title, text string, opts options) (out string, ok bool, err error) {
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var wnd, textCtl, editCtl uintptr
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var okBtn, cancelBtn, extraBtn uintptr
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@ -283,7 +133,7 @@ func editBox(title, text string, opts options) (out string, ok bool, err error)
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default:
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return 1
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case 1, 6: // IDOK, IDYES
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out = getWindowTextString(editCtl)
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out = getWindowString(editCtl)
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ok = true
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case 2: // IDCANCEL
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case 7: // IDNO
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178
util_windows.go
178
util_windows.go
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@ -22,6 +22,10 @@ var (
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commDlgExtendedError = comdlg32.NewProc("CommDlgExtendedError")
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deleteObject = gdi32.NewProc("DeleteObject")
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getDeviceCaps = gdi32.NewProc("GetDeviceCaps")
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createFontIndirect = gdi32.NewProc("CreateFontIndirectW")
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getModuleHandle = kernel32.NewProc("GetModuleHandleW")
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getCurrentThreadId = kernel32.NewProc("GetCurrentThreadId")
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getConsoleWindow = kernel32.NewProc("GetConsoleWindow")
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@ -33,9 +37,12 @@ var (
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getMessage = user32.NewProc("GetMessageW")
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sendMessage = user32.NewProc("SendMessageW")
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isDialogMessage = user32.NewProc("IsDialogMessageW")
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dispatchMessage = user32.NewProc("DispatchMessageW")
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translateMessage = user32.NewProc("TranslateMessage")
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getClassName = user32.NewProc("GetClassNameW")
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setWindowsHookEx = user32.NewProc("SetWindowsHookExW")
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unhookWindowsHookEx = user32.NewProc("UnhookWindowsHookEx")
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setWindowsHookEx = user32.NewProc("SetWindowsHookExW")
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callNextHookEx = user32.NewProc("CallNextHookEx")
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enumWindows = user32.NewProc("EnumWindows")
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enumChildWindows = user32.NewProc("EnumChildWindows")
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@ -45,8 +52,20 @@ var (
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setForegroundWindow = user32.NewProc("SetForegroundWindow")
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getWindowThreadProcessId = user32.NewProc("GetWindowThreadProcessId")
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setThreadDpiAwarenessContext = user32.NewProc("SetThreadDpiAwarenessContext")
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getDpiForWindow = user32.NewProc("GetDpiForWindow")
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releaseDC = user32.NewProc("ReleaseDC")
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getWindowDC = user32.NewProc("GetWindowDC")
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systemParametersInfo = user32.NewProc("SystemParametersInfoW")
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)
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func intptr(i int64) uintptr {
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return uintptr(i)
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}
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func strptr(s string) uintptr {
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return uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(s)))
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}
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func setup() context.CancelFunc {
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var hwnd uintptr
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enumWindows.Call(syscall.NewCallback(func(wnd, lparam uintptr) uintptr {
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@ -97,15 +116,6 @@ func commDlgError() error {
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}
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-cwpretstruct
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type _CWPRETSTRUCT struct {
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Result uintptr
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LParam uintptr
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WParam uintptr
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Message uint32
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Wnd uintptr
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}
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func hookDialog(ctx context.Context, initDialog func(wnd uintptr)) (unhook context.CancelFunc, err error) {
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if ctx != nil && ctx.Err() != nil {
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return nil, ctx.Err()
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@ -174,12 +184,152 @@ func hookDialogTitle(ctx context.Context, title *string) (unhook context.CancelF
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return hookDialog(ctx, init)
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}
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func strptr(s string) uintptr {
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return uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(s)))
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type dpi uintptr
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func getDPI(wnd uintptr) dpi {
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var res uintptr
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if wnd != 0 && getDpiForWindow.Find() == nil {
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res, _, _ = getDpiForWindow.Call(wnd)
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} else if dc, _, _ := getWindowDC.Call(wnd); dc != 0 {
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res, _, _ = getDeviceCaps.Call(dc, 90) // LOGPIXELSY
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releaseDC.Call(0, dc)
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}
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if res == 0 {
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return 96 // USER_DEFAULT_SCREEN_DPI
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}
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return dpi(res)
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}
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func intptr(i int64) uintptr {
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return uintptr(i)
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func (d dpi) Scale(dim uintptr) uintptr {
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if d == 0 {
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return dim
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}
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return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
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}
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type font struct {
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handle uintptr
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logical _LOGFONT
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}
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func getFont() font {
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var metrics _NONCLIENTMETRICS
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metrics.Size = uint32(unsafe.Sizeof(metrics))
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systemParametersInfo.Call(0x29, // SPI_GETNONCLIENTMETRICS
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unsafe.Sizeof(metrics), uintptr(unsafe.Pointer(&metrics)), 0)
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return font{logical: metrics.MessageFont}
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}
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func (f *font) ForDPI(dpi dpi) uintptr {
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if h := -int32(dpi.Scale(12)); f.handle == 0 || f.logical.Height != h {
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f.Delete()
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f.logical.Height = h
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f.handle, _, _ = createFontIndirect.Call(uintptr(unsafe.Pointer(&f.logical)))
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}
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return f.handle
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}
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func (f *font) Delete() {
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if f.handle != 0 {
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deleteObject.Call(f.handle)
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f.handle = 0
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}
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}
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// https://docs.microsoft.com/en-us/windows/win32/winmsg/using-messages-and-message-queues
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func messageLoop(wnd uintptr) error {
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getMessage := getMessage.Addr()
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isDialogMessage := isDialogMessage.Addr()
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translateMessage := translateMessage.Addr()
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dispatchMessage := dispatchMessage.Addr()
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for {
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var msg _MSG
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ret, _, err := syscall.Syscall6(getMessage, 4, uintptr(unsafe.Pointer(&msg)), 0, 0, 0, 0, 0)
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if int32(ret) == -1 {
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return err
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}
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if ret == 0 {
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return nil
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}
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ret, _, _ = syscall.Syscall(isDialogMessage, 2, wnd, uintptr(unsafe.Pointer(&msg)), 0)
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if ret == 0 {
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syscall.Syscall(translateMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
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syscall.Syscall(dispatchMessage, 1, uintptr(unsafe.Pointer(&msg)), 0, 0)
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}
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}
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-cwpretstruct
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type _CWPRETSTRUCT struct {
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Result uintptr
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LParam uintptr
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WParam uintptr
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Message uint32
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Wnd uintptr
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-logfontw
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type _LOGFONT struct {
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Height int32
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Width int32
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Escapement int32
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Orientation int32
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Weight int32
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Italic byte
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Underline byte
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StrikeOut byte
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CharSet byte
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OutPrecision byte
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ClipPrecision byte
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Quality byte
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PitchAndFamily byte
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FaceName [32]uint16
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-nonclientmetricsw
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type _NONCLIENTMETRICS struct {
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Size uint32
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BorderWidth int32
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ScrollWidth int32
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ScrollHeight int32
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CaptionWidth int32
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CaptionHeight int32
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CaptionFont _LOGFONT
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SmCaptionWidth int32
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SmCaptionHeight int32
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SmCaptionFont _LOGFONT
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MenuWidth int32
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MenuHeight int32
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MenuFont _LOGFONT
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StatusFont _LOGFONT
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MessageFont _LOGFONT
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-msg
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type _MSG struct {
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Owner syscall.Handle
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Message uint32
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WParam uintptr
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LParam uintptr
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Time uint32
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Pt _POINT
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-point
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type _POINT struct {
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x, y int32
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}
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// https://docs.microsoft.com/en-us/windows/win32/api/windef/ns-windef-rect
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type _RECT struct {
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left int32
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top int32
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right int32
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bottom int32
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}
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// https://github.com/wine-mirror/wine/blob/master/include/unknwn.idl
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