This document describes the code for a basic notepad application created using the Ring programming language and Qt GUI library. It defines functions for opening, saving, and creating new files. It also implements search/replace, font selection, and color settings. The main window contains dockable panels for files, source code, and a web browser. The application loads previous settings and allows opening, editing, and saving text files.

1. Ring Documentation, Release 1.7
settext("Project Files")
setclickevent("pProject()")
}
addaction(oAction)
oAction = new qAction(win1) {
setShortcut(new QKeySequence("Ctrl+u"))
setbtnimage(self,"image/source.png")
setclickevent("pSourceCode()")
settext("Source Code")
}
addaction(oAction)
oAction = new qAction(win1) {
setShortcut(new QKeySequence("Ctrl+w"))
setbtnimage(self,"image/richtext.png")
setclickevent("pWebBrowser()")
settext("Web Browser")
}
addaction(oAction)
}
sub4 {
sub5 = addmenu("Development Tools")
sub5 {
oAction = new qAction(win1) {
settext("Programming Language")
setclickevent("pLang()")
}
addaction(oAction)
oAction = new qAction(win1) {
settext("GUI Library")
setclickevent("pGUI()")
}
addaction(oAction)
}
addseparator()
oAction = new qAction(win1) {
settext("About")
setclickevent("pAbout()")
}
addaction(oAction)
}
}
setmenubar(menu1)
status1 = new qstatusbar(win1) {
showmessage("Ready!",0)
}
setstatusbar(status1)
tree1 = new qtreeview(win1) {
setclickedevent("pChangeFile()")
setGeometry(00,00,200,400)
oDir = new QDir()
ofile = new QFileSystemModel() {
setrootpath(oDir.currentpath())
myfiles = new qstringlist()
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myfiles.append("*.ring")
myfiles.append("*.rh")
setnamefilters(myfiles)
setNameFilterDisables(false)
}
setmodel(ofile)
myindex = ofile.index(oDir.currentpath(),0)
for x = 1 to ofile.columncount()
hidecolumn(x)
next
setcurrentindex(myindex)
setexpanded(myindex,true)
header().hide()
}
oDock1 = new qdockwidget(win1,0) {
setGeometry(00,00,200,200)
setwindowtitle("Project Files")
setwidget(tree1)
}
textedit1 = new qtextedit(win1) {
setCursorPositionChangedevent("pCursorPositionChanged()")
setLineWrapMode(QTextEdit_NoWrap)
setAcceptRichText(false)
setTextChangedEvent("lAskToSave = true")
}
oDock2 = new qdockwidget(win1,0) {
setwidget(textedit1)
setwindowtitle("Source Code")
}
oWebBrowser = new qWidget() {
setWindowFlags(Qt_SubWindow)
oWBLabel = new qLabel(win1) {
setText("Website: ")
}
oWBText = new qLineEdit(win1) {
setText(cWebSite)
setReturnPressedEvent("pWebGo()")
}
oWBGo = new qPushButton(win1) {
setText("Go")
setClickEvent("pWebGo()")
}
oWBBack = new qPushButton(win1) {
setText("Back")
setClickEvent("pWebBack()")
}
oWBLayout1 = new qHBoxLayout() {
addWidget(oWBLabel)
addWidget(oWBText)
addWidget(oWBGo)
addWidget(oWBBack)
}
oWebView = new qWebView(win1) {
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loadpage(new qurl(cWebSite))
}
oWBlayout2 = new qVBoxLayout() {
addLayout(oWBLayout1)
addWidget(oWebView)
}
setLayout(oWBLayout2)
}
oDock3 = new qdockwidget(win1,0) {
setwidget(oWebBrowser)
setwindowtitle("Web Browser")
setFeatures(QDockWidget_DocWidgetClosable)
}
adddockwidget(1,oDock1,1)
adddockwidget(2,oDock2,2)
adddockwidget(2,oDock3,1)
setwinicon(self,"image/notepad.png")
showmaximized()
}
RestoreSettings()
exec()
}
func pWebGo
cWebsite = oWBText.text()
oWebView.LoadPage( new qurl( cWebSite ) )
func pWebBack
oWebView.Back()
func pProject
oDock1.Show()
func pSourceCode
oDock2.Show()
func pWebBrowser
oDock3.Show()
func pChangeFile
myitem = tree1.currentindex()
if ofile.isdir(myitem)
return
ok
cActiveFileName = ofile.filepath(myitem)
textedit1.settext(read(cActiveFileName))
textedit1.setfocus(0)
pCursorPositionChanged()
pSetActiveFileName()
func pSetActiveFileName
oDock2.setWindowTitle("Source Code : " + cActiveFileName)
func pCursorPositionChanged
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status1.showmessage(" Line : "+(textedit1.textcursor().blocknumber()+1)+
" Column : " +(textedit1.textcursor().columnnumber()+1) +
" Total Lines : " + textedit1.document().linecount() ,0)
func pGoto
oInput = New QInputDialog(win1)
{
setwindowtitle("Enter the line number?")
setgeometry(100,100,400,50)
setlabeltext("Line")
settextvalue("1")
exec()
nLine = 0 + oInput.textvalue()
oBlock = textedit1.document().findBlockByLineNumber(nLine-1)
oCursor = textedit1.textcursor()
oCursor.setposition(oBlock.position(),0)
textedit1.settextcursor(oCursor)
}
func pFind
if isobject(oSearch)
oSearch.activatewindow()
return
ok
oSearch = new qWidget()
{
new qLabel(oSearch)
{
setText("Find What : ")
setgeometry(10,10,50,30)
}
oSearchValue = new qlineedit(oSearch)
{
setgeometry(80,10,460,30)
setReturnPressedEvent("pFindValue()")
}
new qLabel(oSearch)
{
setText("Replace with ")
setgeometry(10,45,80,30)
}
oReplaceValue = new qlineedit(oSearch)
{
setgeometry(80,45,460,30)
}
oSearchCase = new qCheckbox(oSearch)
{
setText("Case Sensitive")
setgeometry(80,85,100,30)
}
new qPushButton(oSearch)
{
setText("Find/Find Next")
setgeometry(80,120,100,30)
setclickevent("pFindValue()")
}
new qPushButton(oSearch)
{
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setText("Replace")
setgeometry(200,120,100,30)
setclickevent("pReplace()")
}
new qPushButton(oSearch)
{
setText("Replace All")
setgeometry(320,120,100,30)
setclickevent("pReplaceAll()")
}
new qPushButton(oSearch)
{
setText("Close")
setgeometry(440,120,100,30)
setclickevent("pSearchClose()")
}
setwinicon(oSearch,"image/notepad.png")
setWindowTitle("Find/Replace")
setStyleSheet("background-color:white;")
setFixedsize(550,160)
setwindowflags( Qt_CustomizeWindowHint |
Qt_WindowTitleHint | Qt_WindowStaysOnTopHint)
oSearchFilter = new qallevents(oSearch)
oSearchFilter.setKeyPressEvent("pSearchKeyPress()")
installeventfilter(oSearchFilter)
show()
}
Func pReplace
oCursor = textedit1.textCursor()
if oCursor.HasSelection() = false
new qMessagebox(oSearch)
{
SetWindowTitle("Replace")
SetText("No Selection")
show()
}
return false
ok
cValue = oSearchValue.text()
cSelected = oCursor.SelectedText()
if oSearchCase.checkState() = Qt_Unchecked
cValue = lower(cValue)
cSelected = lower(cSelected)
ok
if cSelected != cValue
new qMessagebox(oSearch)
{
SetWindowTitle("Replace")
SetText("No Match")
show()
}
return false
ok
cValue = oReplaceValue.text()
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nStart = oCursor.SelectionStart()
nEnd = oCursor.SelectionEnd()
cStr = textedit1.toPlainText()
cStr = left(cStr,nStart)+cValue+substr(cStr,nEnd+1)
textedit1.setText(cStr)
return pFindValue()
Func pReplaceAll
cStr = textedit1.toPlainText()
cOldValue = oSearchValue.text()
cNewValue = oReplaceValue.text()
if oSearchCase.checkState() = Qt_Unchecked
# Not Case Sensitive
cStr = SubStr(cStr,cOldValue,cNewValue,true)
else
# Case Sensitive
cStr = SubStr(cStr,cOldValue,cNewValue)
ok
textedit1.setText(cStr)
new qMessagebox(oSearch)
{
SetWindowTitle("Replace All")
SetText("Operation Done")
show()
}
Func pSearchClose
oSearch.close()
oSearch = NULL
func pSearchKeyPress
if oSearchFilter.getKeyCode() = Qt_Key_Escape
pSearchClose()
ok
func pFindValue
oCursor = textedit1.textcursor()
nPosStart = oCursor.Position() + 1
cValue = oSearchValue.text()
cStr = textedit1.toplaintext()
cStr = substr(cStr,nPosStart)
if oSearchCase.checkState() = Qt_Unchecked
cStr = lower(cStr) cValue = lower(cValue)
ok
nPos = substr(cStr,cValue)
if nPos > 0
nPos += nPosStart - 2
oCursor = textedit1.textcursor()
oCursor.setposition(nPos,0)
textedit1.settextcursor(oCursor)
oCursor = textedit1.textcursor()
oCursor.setposition(nPos+len(cValue),1)
textedit1.settextcursor(oCursor)
return true
else
new qMessagebox(oSearch)
{
SetWindowTitle("Search")
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SetText("Cannot find :" + cValue)
show()
}
return false
ok
func pNofileopened
New qMessageBox(win1) {
setWindowTitle("Sorry")
setText("Save the file first!")
show()
}
func pDebug
if cActiveFileName = Null return pNofileopened() ok
cCode = "start run " + cActiveFileName + nl
system(cCode)
func pRun
if cActiveFileName = Null return pNofileopened() ok
cCode = "start ring " + cActiveFileName + nl
system(cCode)
func pRunNoConsole
if cActiveFileName = Null return pNofileopened() ok
cCode = "start /b ring " + cActiveFileName + nl
system(cCode)
func pSave
if cActiveFileName = NULL return pSaveAs() ok
writefile(cActiveFileName,textedit1.toplaintext())
status1.showmessage("File : " + cActiveFileName + " saved!",0)
lAskToSave = false
func pSaveAs
new qfiledialog(win1) {
cName = getsavefilename(win1,"Save As","","source files(*.ring)")
if cName != NULL
cActiveFileName = cName
writefile(cActiveFileName,textedit1.toplaintext())
status1.showmessage("File : " + cActiveFileName + " saved!",0)
pSetActiveFileName()
lAskToSave = false
ok
}
func pPrint
status1.showmessage("Printing to File : RingDoc.pdf",0)
printer1 = new qPrinter(0) {
setoutputformat(1) # 1 = pdf
setoutputfilename("RingDoc.pdf")
textedit1.print(printer1)
}
status1.showmessage("Done!",0)
system("RingDoc.pdf")
func pCut
textedit1.cut()
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status1.showmessage("Cut!",0)
func pCopy
textedit1.copy()
status1.showmessage("Copy!",0)
func pPaste
textedit1.paste()
status1.showmessage("Paste!",0)
func pFont
oFontDialog = new qfontdialog() {
aFont = getfont()
}
textedit1.selectall()
cFont = aFont[1]
pSetFont()
Func pSetFont
myfont = new qfont("",0,0,0)
myfont.fromstring(cFont)
textedit1.setcurrentfont(myfont)
Func pColor
new qcolordialog() { aTextColor = GetColor() }
pSetColors()
Func pColor2
new qcolordialog() { aBackColor = GetColor() }
pSetColors()
Func pSetColors
textedit1.setstylesheet("color: rgb(" + aTextColor[1] + "," + aTextColor[2] +
"," + aTextColor[3] + ");" + "background-color: rgb(" +
aBackColor[1] + "," + aBackColor[2] + "," +
aBackColor[3] + ")")
func pOpen
new qfiledialog(win1) {
cName = getopenfilename(win1,"open file","c:","source files(*.ring)")
if cName != NULL
cActiveFileName = cName
textedit1.settext(read(cActiveFileName))
ok
}
func pNew
new qfiledialog(win1) {
cName = getsavefilename(win1,"New file","","source files(*.ring)")
if cName != NULL
write(cName,"")
cActiveFileName = cName
textedit1.settext(read(cActiveFileName))
ok
}
Func WriteFile cFileName,cCode
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aCode = str2list(cCode)
fp = fopen(cFileName,"wb")
for cLine in aCode
fwrite(fp,cLine+char(13)+char(10))
next
fclose(fp)
Func MsgBox cTitle,cMessage
new qMessagebox(win1) {
setwindowtitle(cTitle)
setText(cMessage)
show()
}
Func pLang
MsgBox("Programming Language",
"This application developed using the Ring programming language")
Func pGUI
MsgBox("GUI Library",
"This application uses the Qt GUI Library through RingQt")
Func pAbout
MsgBox("About",
"2016, Mahmoud Fayed <msfclipper@yahoo.com>")
Func pSaveSettings
cSettings = "aTextColor = ["+aTextColor[1]+","+aTextColor[2]+
","+aTextColor[3]+"]" + nl +
"aBackColor = ["+aBackColor[1]+","+aBackColor[2]+
","+aBackColor[3]+"]" + nl +
"cFont = '" + cFont + "'" + nl +
"cWebSite = '" + cWebsite + "'" + nl
cSettings = substr(cSettings,nl,char(13)+char(10))
write("ringnotepad.ini",cSettings)
if lAsktoSave
new qmessagebox(win1)
{
setwindowtitle("Save Changes?")
settext("Some changes are not saved!")
setInformativeText("Do you want to save your changes?")
setstandardbuttons(QMessageBox_Yes |
QMessageBox_No | QMessageBox_Cancel)
result = exec()
win1 {
if result = QMessageBox_Yes
pSave()
but result = QMessageBox_Cancel
return false
ok
}
}
ok
return true
Func pSetWebsite
oWebView { loadpage(new qurl(cWebSite)) }
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oWBText { setText(cWebSite) }
Func RestoreSettings
eval(read("ringnotepad.ini"))
pSetColors()
pSetFont()
pSetWebsite()
Func pQuit
if pSaveSettings()
myapp.quit()
ok
The application during the runtime
The next screen shot demonstrates the “File” menu
The next window for “search and replace”
The next screen shot demonstrates the application main window
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