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Refactor, options.

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This commit is contained in:
Nuno Cruces 2021-04-05 17:54:46 +01:00
parent 1d3292be96
commit db033435a0
3 changed files with 105 additions and 123 deletions
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204
entry_windows.go
View file

@ -1,10 +1,7 @@
// This file was imported from: github.com/gen2brain/dlgs
// Copyright (c) 2017, Milan Nikolic <gen2brain>
// Licensed under the BSD 2-Clause "Simplified" License.
package zenity
import (
"math"
"strconv"
"syscall"
"unsafe"
@ -15,39 +12,40 @@ func entry(text string, opts options) (string, bool, error) {
if opts.title != nil {
title = *opts.title
}
return editBox(title, text, opts.entryText, opts.hideText)
if opts.okLabel == nil {
opts.okLabel = stringPtr("OK")
}
if opts.cancelLabel == nil {
opts.cancelLabel = stringPtr("Cancel")
}
return editBox(title, text, opts)
}
func password(opts options) (string, string, bool, error) {
var title string
if opts.title != nil {
title = *opts.title
}
pass, ok, err := editBox(title, "Password:", "", true)
opts.hideText = true
pass, ok, err := entry("Password:", opts)
return "", pass, ok, err
}
var (
registerClassEx = user32.NewProc("RegisterClassExW")
unregisterClass = user32.NewProc("UnregisterClassW")
createWindowEx = user32.NewProc("CreateWindowExW")
defWindowProc = user32.NewProc("DefWindowProcW")
destroyWindow = user32.NewProc("DestroyWindow")
isDialogMessage = user32.NewProc("IsDialogMessageW")
translateMessage = user32.NewProc("TranslateMessage")
dispatchMessage = user32.NewProc("DispatchMessageW")
postQuitMessage = user32.NewProc("PostQuitMessage")
registerClassEx = user32.NewProc("RegisterClassExW")
unregisterClassW = user32.NewProc("UnregisterClassW")
translateMessage = user32.NewProc("TranslateMessage")
getWindowTextLengthW = user32.NewProc("GetWindowTextLengthW")
getWindowTextW = user32.NewProc("GetWindowTextW")
defWindowProc = user32.NewProc("DefWindowProcW")
getWindowRect = user32.NewProc("GetWindowRect")
setWindowPos = user32.NewProc("SetWindowPos")
setFocus = user32.NewProc("SetFocus")
showWindow = user32.NewProc("ShowWindow")
isDialogMessage = user32.NewProc("IsDialogMessageW")
getSystemMetricsW = user32.NewProc("GetSystemMetrics")
systemParametersInfo = user32.NewProc("SystemParametersInfoW")
getSystemMetrics = user32.NewProc("GetSystemMetrics")
getWindowDC = user32.NewProc("GetWindowDC")
releaseDC = user32.NewProc("ReleaseDC")
getDpiForWindow = user32.NewProc("GetDpiForWindow")
setFocus = user32.NewProc("SetFocus")
deleteObject = gdi32.NewProc("DeleteObject")
getDeviceCaps = gdi32.NewProc("GetDeviceCaps")
@ -132,21 +130,14 @@ type _RECT struct {
type dpi uintptr
func (d dpi) Scale(dim uintptr) uintptr {
if d == 0 {
return dim
}
return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
}
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 {
defer releaseDC.Call(0, dc)
res, _, _ = getDeviceCaps.Call(dc, 90) // LOGPIXELSY
releaseDC.Call(0, dc)
}
if res == 0 {
@ -155,51 +146,11 @@ func getDPI(wnd uintptr) dpi {
return dpi(res)
}
func createWindow(exStyle uintptr, className, windowName string,
style, x, y, width, height, parent, menu, instance uintptr) (uintptr, error) {
ret, _, err := createWindowEx.Call(exStyle,
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(className))),
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(windowName))),
style, x, y, width, height, parent, menu, instance, 0)
if ret == 0 {
return 0, err
func (d dpi) Scale(dim uintptr) uintptr {
if d == 0 {
return dim
}
return ret, nil
}
func unregisterClass(className string, instance uintptr) bool {
ret, _, _ := unregisterClassW.Call(uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(className))), instance)
return ret != 0
}
func getWindowTextLength(hwnd uintptr) int {
ret, _, _ := getWindowTextLengthW.Call(hwnd)
return int(ret)
}
func getWindowText(hwnd uintptr) string {
textLen := getWindowTextLength(hwnd) + 1
buf := make([]uint16, textLen)
getWindowTextW.Call(hwnd, uintptr(unsafe.Pointer(&buf[0])), uintptr(textLen))
return syscall.UTF16ToString(buf)
}
func getSystemMetrics(nindex int32) int32 {
ret, _, _ := getSystemMetricsW.Call(uintptr(nindex), 0, 0)
return int32(ret)
}
func centerWindow(wnd uintptr) {
var rect _RECT
getWindowRect.Call(wnd, uintptr(unsafe.Pointer(&rect)))
x := (getSystemMetrics(0 /* SM_CXSCREEN */) - (rect.right - rect.left)) / 2
y := (getSystemMetrics(1 /* SM_CYSCREEN */) - (rect.bottom - rect.top)) / 2
setWindowPos.Call(wnd, 0, uintptr(x), uintptr(y), 0, 0, 0x5) // SWP_NOZORDER|SWP_NOSIZE
return dim * uintptr(d) / 96 // USER_DEFAULT_SCREEN_DPI
}
type font struct {
@ -207,7 +158,7 @@ type font struct {
face _LOGFONT
}
func getMessageFont() font {
func getFont() font {
var metrics _NONCLIENTMETRICS
metrics.Size = uint32(unsafe.Sizeof(metrics))
systemParametersInfo.Call(0x29, // SPI_GETNONCLIENTMETRICS
@ -215,23 +166,43 @@ func getMessageFont() font {
return font{face: metrics.MessageFont}
}
func (f *font) forDPI(dpi dpi) uintptr {
func (f *font) ForDPI(dpi dpi) uintptr {
if h := -int32(dpi.Scale(12)); f.handle == 0 || f.face.Height != h {
f.delete()
f.Delete()
f.face.Height = h
f.handle, _, _ = createFontIndirect.Call(uintptr(unsafe.Pointer(&f.face)))
}
return f.handle
}
func (f *font) delete() {
func (f *font) Delete() {
if f.handle != 0 {
deleteObject.Call(f.handle)
f.handle = 0
}
}
func registerClass(instance, proc uintptr) (string, error) {
func getWindowTextString(wnd uintptr) string {
len, _, _ := getWindowTextLength.Call(wnd)
buf := make([]uint16, len+1)
getWindowText.Call(wnd, uintptr(unsafe.Pointer(&buf[0])), len+1)
return syscall.UTF16ToString(buf)
}
func centerWindow(wnd uintptr) {
getMetric := func(i uintptr) int32 {
ret, _, _ := getSystemMetrics.Call(i)
return int32(ret)
}
var rect _RECT
getWindowRect.Call(wnd, uintptr(unsafe.Pointer(&rect)))
x := (getMetric(0 /* SM_CXSCREEN */) - (rect.right - rect.left)) / 2
y := (getMetric(1 /* SM_CYSCREEN */) - (rect.bottom - rect.top)) / 2
setWindowPos.Call(wnd, 0, uintptr(x), uintptr(y), 0, 0, 0x5) // SWP_NOZORDER|SWP_NOSIZE
}
func registerClass(instance, proc uintptr) (uintptr, error) {
name := "WC_" + strconv.FormatUint(uint64(proc), 16)
var wcx _WNDCLASSEX
@ -242,10 +213,7 @@ func registerClass(instance, proc uintptr) (string, error) {
wcx.ClassName = syscall.StringToUTF16Ptr(name)
ret, _, err := registerClassEx.Call(uintptr(unsafe.Pointer(&wcx)))
if ret == 0 {
return "", err
}
return name, nil
return ret, err
}
// https://docs.microsoft.com/en-us/windows/win32/winmsg/using-messages-and-message-queues
@ -273,29 +241,32 @@ func messageLoop(wnd uintptr) error {
}
}
// editBox displays textedit/inputbox dialog.
func editBox(title, text, defaultText string, password bool) (out string, ok bool, err error) {
func editBox(title, text string, opts options) (out string, ok bool, err error) {
var wnd, textCtl, editCtl uintptr
var okBtn, cancelBtn, extraBtn uintptr
defWindowProc := defWindowProc.Addr()
font := getMessageFont()
defer font.delete()
font := getFont()
defer font.Delete()
layout := func(dpi dpi) {
hfont := font.forDPI(dpi)
hfont := font.ForDPI(dpi)
sendMessage.Call(textCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
sendMessage.Call(editCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
sendMessage.Call(okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
sendMessage.Call(cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(140), 0x6) // SWP_NOZORDER|SWP_NOMOVE
setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
setWindowPos.Call(editCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(cancelBtn, 0, dpi.Scale(95), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(extraBtn, 0, dpi.Scale(178), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(140), 0x6) // SWP_NOZORDER|SWP_NOMOVE
setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
setWindowPos.Call(editCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
if extraBtn == 0 {
setWindowPos.Call(okBtn, 0, dpi.Scale(95), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
} else {
sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(extraBtn, 0, dpi.Scale(95), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(65), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
}
}
proc := func(wnd uintptr, msg uint32, wparam, lparam uintptr) uintptr {
@ -311,10 +282,11 @@ func editBox(title, text, defaultText string, password bool) (out string, ok boo
default:
return 1
case 1, 6: // IDOK, IDYES
out = getWindowText(editCtl)
out = getWindowTextString(editCtl)
ok = true
case 2: // IDCANCEL
case 7: // IDNO
err = ErrExtraButton
}
destroyWindow.Call(wnd)
@ -336,49 +308,57 @@ func editBox(title, text, defaultText string, password bool) (out string, ok boo
return "", false, err
}
className, err := registerClass(instance, syscall.NewCallback(proc))
if err != nil {
cls, err := registerClass(instance, syscall.NewCallback(proc))
if cls == 0 {
return "", false, err
}
defer unregisterClass(className, instance)
defer unregisterClass.Call(cls, instance)
wnd, _ = createWindow(0x10101, // WS_EX_CONTROLPARENT|WS_EX_WINDOWEDGE|WS_EX_DLGMODALFRAME
className, title,
wnd, _, _ = createWindowEx.Call(0x10101, // WS_EX_CONTROLPARENT|WS_EX_WINDOWEDGE|WS_EX_DLGMODALFRAME
cls, stringUintptr(title),
0x84c80000, // WS_POPUPWINDOW|WS_CLIPSIBLINGS|WS_DLGFRAME
0x80000000, // CW_USEDEFAULT
0x80000000, // CW_USEDEFAULT
281, 140, 0, 0, instance)
textCtl, _ = createWindow(0, "STATIC", text,
textCtl, _, _ = createWindowEx.Call(0,
stringUintptr("STATIC"), stringUintptr(text),
0x5002e080, // WS_CHILD|WS_VISIBLE|WS_GROUP|SS_WORDELLIPSIS|SS_EDITCONTROL|SS_NOPREFIX
12, 10, 241, 16, wnd, 0, instance)
var flags uintptr = 0x50030080 // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP|ES_AUTOHSCROLL
if password {
if opts.hideText {
flags |= 0x20 // ES_PASSWORD
}
editCtl, _ = createWindow(0x200, // WS_EX_CLIENTEDGE
"EDIT", defaultText, flags,
editCtl, _, _ = createWindowEx.Call(0x200, // WS_EX_CLIENTEDGE
stringUintptr("EDIT"), stringUintptr(opts.entryText),
flags,
12, 30, 241, 24, wnd, 0, instance)
okBtn, _ = createWindow(0, "BUTTON", "OK",
okBtn, _, _ = createWindowEx.Call(0,
stringUintptr("BUTTON"), stringUintptr(*opts.okLabel),
0x50030001, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP|BS_DEFPUSHBUTTON
12, 65, 75, 24, wnd, 1 /* IDOK */, instance)
cancelBtn, _ = createWindow(0, "BUTTON", "Cancel",
cancelBtn, _, _ = createWindowEx.Call(0,
stringUintptr("BUTTON"), stringUintptr(*opts.cancelLabel),
0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
95, 65, 75, 24, wnd, 2 /* IDCANCEL */, instance)
extraBtn, _ = createWindow(0, "BUTTON", "Extra",
0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
178, 65, 75, 24, wnd, 7 /* IDNO */, instance)
12, 65, 75, 24, wnd, 2 /* IDCANCEL */, instance)
if opts.extraButton != nil {
extraBtn, _, _ = createWindowEx.Call(0,
stringUintptr("BUTTON"), stringUintptr(*opts.extraButton),
0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
12, 65, 75, 24, wnd, 7 /* IDNO */, instance)
}
layout(getDPI(wnd))
centerWindow(wnd)
setFocus.Call(editCtl)
showWindow.Call(wnd, 1 /* SW_SHOWNORMAL */, 0)
sendMessage.Call(editCtl, 0xb1 /* EM_SETSEL */, 0, math.MaxUint64 /* -1 */)
err = messageLoop(wnd)
if err != nil {
err = nil
if err := messageLoop(wnd); err != nil {
return "", false, err
}
return out, ok, nil
return out, ok, err
}

14
msg_windows.go
View file

@ -7,7 +7,8 @@ import (
)
var (
messageBox = user32.NewProc("MessageBoxW")
messageBox = user32.NewProc("MessageBoxW")
getDlgCtrlID = user32.NewProc("GetDlgCtrlID")
)
func message(kind messageKind, text string, opts options) (bool, error) {
@ -51,14 +52,12 @@ func message(kind messageKind, text string, opts options) (bool, error) {
defer unhook()
}
var title *uint16
var title uintptr
if opts.title != nil {
title = syscall.StringToUTF16Ptr(*opts.title)
title = stringUintptr(*opts.title)
}
s, _, err := messageBox.Call(0,
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(text))),
uintptr(unsafe.Pointer(title)), flags)
s, _, err := messageBox.Call(0, stringUintptr(text), title, flags)
if opts.ctx != nil && opts.ctx.Err() != nil {
return false, opts.ctx.Err()
@ -97,8 +96,7 @@ func hookMessageLabels(kind messageKind, opts options) (unhook context.CancelFun
text = opts.extraButton
}
if text != nil {
ptr := syscall.StringToUTF16Ptr(*text)
setWindowText.Call(wnd, uintptr(unsafe.Pointer(ptr)))
setWindowText.Call(wnd, stringUintptr(*text))
}
}
return 1

10
util_windows.go
View file

@ -39,8 +39,9 @@ var (
callNextHookEx = user32.NewProc("CallNextHookEx")
enumWindows = user32.NewProc("EnumWindows")
enumChildWindows = user32.NewProc("EnumChildWindows")
getDlgCtrlID = user32.NewProc("GetDlgCtrlID")
setWindowText = user32.NewProc("SetWindowTextW")
getWindowText = user32.NewProc("GetWindowTextW")
getWindowTextLength = user32.NewProc("GetWindowTextLengthW")
setForegroundWindow = user32.NewProc("SetForegroundWindow")
getWindowThreadProcessId = user32.NewProc("GetWindowThreadProcessId")
setThreadDpiAwarenessContext = user32.NewProc("SetThreadDpiAwarenessContext")
@ -167,13 +168,16 @@ func hookDialogTitle(ctx context.Context, title *string) (unhook context.CancelF
var init func(wnd uintptr)
if title != nil {
init = func(wnd uintptr) {
ptr := syscall.StringToUTF16Ptr(*title)
setWindowText.Call(wnd, uintptr(unsafe.Pointer(ptr)))
setWindowText.Call(wnd, stringUintptr(*title))
}
}
return hookDialog(ctx, init)
}
func stringUintptr(s string) uintptr {
return uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(s)))
}
// https://github.com/wine-mirror/wine/blob/master/include/unknwn.idl
type _IUnknownVtbl struct {