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Better handling of empty strings in FLineEdit and FButton + sub-menu example

This commit is contained in:
Markus Gans 2015-11-29 15:58:36 +01:00
parent 70dd5af0fb
commit ae62812335
6 changed files with 141 additions and 31 deletions
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4
ChangeLog
View File

@ -1,3 +1,7 @@
2015-11-29 Markus Gans <guru.mail@muenster.de>
* Better handling of empty strings in FLineEdit and FButton
* Add a sub-menu to the "ui.cpp" example
2015-11-25 Markus Gans <guru.mail@muenster.de>
* Small menu improvements

8
src/fbutton.cpp
View File

@ -137,9 +137,6 @@ void FButton::draw()
bool is_ActiveFocus, is_Active, is_Focus, is_Flat;
bool is_NonFlatShadow, is_NoUnderline;
if ( text.isNull() || text.isEmpty() )
return;
length = int(text.getLength());
hotkeypos = -1;
hotkey_offset = 0;
@ -150,7 +147,7 @@ void FButton::draw()
else
ButtonText = new wchar_t[length+1]();
txt = text;
txt = FString(text);
src = const_cast<wchar_t*>(txt.wc_str());
dest = const_cast<wchar_t*>(ButtonText);
@ -710,6 +707,9 @@ void FButton::onFocusOut (FFocusEvent*)
//----------------------------------------------------------------------
void FButton::setText (const FString& txt)
{
if ( txt )
text = txt;
else
text = "";
detectHotkey();
}

14
src/flineedit.cpp
View File

@ -185,10 +185,11 @@ void FLineEdit::drawInputField()
if ( isUTF8_linux_terminal() )
{
setUTF8(true);
if ( show_text )
print (show_text);
setUTF8(false);
}
else
else if ( show_text )
print (show_text);
x = int(show_text.getLength());
@ -782,12 +783,23 @@ void FLineEdit::onFocusOut (FFocusEvent*)
hideCursor();
}
//----------------------------------------------------------------------
void FLineEdit::clearText()
{
offset = 0;
cursor_pos = 0;
text.clear();
}
//----------------------------------------------------------------------
void FLineEdit::setText (FString txt)
{
offset = 0;
cursor_pos = 0;
if ( txt )
text = txt;
else
text = "";
}
//----------------------------------------------------------------------

1
src/flineedit.h
View File

@ -105,6 +105,7 @@ class FLineEdit : public FWidget
void onFocusIn (FFocusEvent*);
void onFocusOut (FFocusEvent*);
void clearText();
void setText (FString);
FString getText() const;
void setLabelText (FString);

22
src/fstring.cpp
View File

@ -659,15 +659,20 @@ const FString& FString::operator += (const char* s)
//----------------------------------------------------------------------
const FString& FString::operator += (const wchar_t c)
{
_insert (length, 1, &c);
wchar_t s[2];
s[0] = c;
s[1] = L'\0';
_insert (length, 1, s);
return (*this);
}
//----------------------------------------------------------------------
const FString& FString::operator += (const char c)
{
const wchar_t wc = static_cast<wchar_t>(c);
_insert (length, 1, &wc );
wchar_t s[2];
s[0] = wchar_t(c & 0xff);
s[1] = L'\0';
_insert (length, 1, s);
return (*this);
}
@ -724,17 +729,22 @@ const FString FString::operator + (const char* s)
//----------------------------------------------------------------------
const FString FString::operator + (const wchar_t c)
{
wchar_t s[2];
s[0] = c;
s[1] = L'\0';
FString tmp(string);
tmp._insert (length, 1, &c);
tmp._insert (length, 1, s);
return(tmp);
}
//----------------------------------------------------------------------
const FString FString::operator + (const char c)
{
const wchar_t wc = static_cast<wchar_t>(c);
wchar_t s[2];
s[0] = wchar_t(c & 0xff);
s[1] = L'\0';
FString tmp(string);
tmp._insert (length, 1, &wc);
tmp._insert (length, 1, s);
return(tmp);
}

117
test/ui.cpp
View File

@ -160,7 +160,9 @@ void ProgressDialog::cb_exit_bar (FWidget*, void*)
class MyDialog : public FDialog
{
private:
FLineEdit* myLineEdit;
FListBox* myList;
FString clipboard;
private:
MyDialog (const MyDialog&); // Disabled copy constructor
@ -174,6 +176,10 @@ class MyDialog : public FDialog
void cb_about (FWidget*, void*);
void cb_terminfo (FWidget*, void*);
void cb_drives (FWidget*, void*);
void cb_cutClipboard (FWidget*, void*);
void cb_copyClipboard (FWidget*, void*);
void cb_pasteClipboard (FWidget*, void*);
void cb_clearInput (FWidget*, void*);
void cb_input2buttonText (FWidget*, void*);
void cb_setTitlebar (FWidget*, void*);
void cb_ProgressBar (FWidget*, void*);
@ -190,7 +196,9 @@ class MyDialog : public FDialog
//----------------------------------------------------------------------
MyDialog::MyDialog (FWidget* parent)
: FDialog(parent)
, myLineEdit()
, myList()
, clipboard()
{
// menu bar
FMenuBar* Menubar = new FMenuBar (this);
@ -202,9 +210,10 @@ MyDialog::MyDialog (FWidget* parent)
Edit->setStatusbarMessage ("Cut-and-paste editing commands");
FMenu* View = new FMenu ("&View", Menubar);
View->setStatusbarMessage ("Show internal informations");
FMenuItem* Options = new FMenuItem ("&Options", Menubar);
//FMenuItem* Options = new FMenuItem ("&Options", Menubar);
FMenu* Options = new FMenu ("&Options", Menubar);
Options->setStatusbarMessage ("Set program defaults");
Options->setDisable();
//Options->setDisable();
FMenuItem* Help = new FMenuItem ("&Help", Menubar);
Help->setStatusbarMessage ("Show version and copyright information");
@ -212,12 +221,20 @@ MyDialog::MyDialog (FWidget* parent)
FMenuItem* Open = new FMenuItem ("&Open...", File);
Open->addAccelerator (fc::Fckey_o); // Ctrl + O
Open->setStatusbarMessage ("Locate and open a text file");
FMenu* Recent = new FMenu ("System files", File);
Recent->setStatusbarMessage ("View text file");
FMenuItem* Line1 = new FMenuItem (File);
Line1->setSeparator();
FMenuItem* Quit = new FMenuItem ("&Quit", File);
Quit->addAccelerator (fc::Fmkey_x); // Meta/Alt + X
Quit->setStatusbarMessage ("Exit the program");
// "Recent" menu items
FMenuItem* File1 = new FMenuItem ("/etc/services", Recent);
FMenuItem* File2 = new FMenuItem ("/etc/fstab", Recent);
FMenuItem* File3 = new FMenuItem ("/etc/passwd", Recent);
// "Edit" menu items
FMenuItem* Undo = new FMenuItem (fc::Fckey_z, "Undo", Edit);
Undo->setDisable();
@ -240,6 +257,15 @@ MyDialog::MyDialog (FWidget* parent)
FMenuItem* Drive = new FMenuItem ("&Drive symbols...", View);
Drive->setStatusbarMessage ("Show drive symbols");
// "Options" menu items
FCheckMenuItem* aa = new FCheckMenuItem ("Disk &Status", Options);
aa->setStatusbarMessage ("1");
aa->setChecked();
FRadioMenuItem* bb = new FRadioMenuItem ("&Quick View", Options);
bb->setStatusbarMessage ("2");
FRadioMenuItem* cc = new FRadioMenuItem ("&Baumstrucktur", Options);
cc->setStatusbarMessage ("3");
// Menu function callbacks
Open->addCallback
(
@ -254,22 +280,22 @@ MyDialog::MyDialog (FWidget* parent)
Cut->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_noFunctionMsg)
_METHOD_CALLBACK (this, &MyDialog::cb_cutClipboard)
);
Copy->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_noFunctionMsg)
_METHOD_CALLBACK (this, &MyDialog::cb_copyClipboard)
);
Paste->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_noFunctionMsg)
_METHOD_CALLBACK (this, &MyDialog::cb_pasteClipboard)
);
Clear->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_noFunctionMsg)
_METHOD_CALLBACK (this, &MyDialog::cb_clearInput)
);
Env->addCallback
(
@ -286,6 +312,21 @@ MyDialog::MyDialog (FWidget* parent)
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_about)
);
File1->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_view)
);
File2->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_view)
);
File3->addCallback
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_view)
);
// Buttons
FButton* MyButton1 = new FButton (this);
@ -341,12 +382,12 @@ MyDialog::MyDialog (FWidget* parent)
check2->setNoUnderline();
// A text input field
FLineEdit* MyLineEdit = new FLineEdit (this);
MyLineEdit->setGeometry(22, 1, 10, 1);
MyLineEdit->setText (FString("EnTry").toLower());
MyLineEdit->setLabelText (L"&Input:");
MyLineEdit->setStatusbarMessage ("Press Enter to set the title");
MyLineEdit->setShadow();
myLineEdit = new FLineEdit (this);
myLineEdit->setGeometry(22, 1, 10, 1);
myLineEdit->setText (FString("EnTry").toLower());
myLineEdit->setLabelText (L"&Input:");
myLineEdit->setStatusbarMessage ("Press Enter to set the title");
myLineEdit->setShadow();
// Buttons
FButton* MyButton4 = new FButton (this);
@ -431,7 +472,7 @@ MyDialog::MyDialog (FWidget* parent)
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_input2buttonText),
dynamic_cast<FWidget::data_ptr>(MyLineEdit)
dynamic_cast<FWidget::data_ptr>(myLineEdit)
);
MyButton5->addCallback
@ -446,7 +487,7 @@ MyDialog::MyDialog (FWidget* parent)
_METHOD_CALLBACK (this, &MyDialog::cb_exitApp)
);
MyLineEdit->addCallback
myLineEdit->addCallback
(
"activate", // e.g. on <Enter>
_METHOD_CALLBACK (this, &MyDialog::cb_setTitlebar)
@ -463,7 +504,7 @@ MyDialog::MyDialog (FWidget* parent)
(
"clicked",
_METHOD_CALLBACK (this, &MyDialog::cb_setInput),
dynamic_cast<FWidget::data_ptr>(MyLineEdit)
dynamic_cast<FWidget::data_ptr>(myLineEdit)
);
myList->addCallback
@ -593,6 +634,43 @@ void MyDialog::cb_drives (FWidget*, void*)
}
}
//----------------------------------------------------------------------
void MyDialog::cb_cutClipboard (FWidget*, void*)
{
if ( ! myLineEdit )
return;
clipboard = myLineEdit->getText();
myLineEdit->clearText();
myLineEdit->redraw();
}
//----------------------------------------------------------------------
void MyDialog::cb_copyClipboard (FWidget*, void*)
{
if ( ! myLineEdit )
return;
clipboard = myLineEdit->getText();
}
//----------------------------------------------------------------------
void MyDialog::cb_pasteClipboard (FWidget*, void*)
{
if ( ! myLineEdit )
return;
myLineEdit->setText(clipboard);
myLineEdit->redraw();
}
//----------------------------------------------------------------------
void MyDialog::cb_clearInput (FWidget*, void*)
{
if ( ! myLineEdit )
return;
clipboard.clear();
myLineEdit->clearText();
myLineEdit->redraw();
}
//----------------------------------------------------------------------
void MyDialog::cb_input2buttonText (FWidget* widget, void* data_ptr)
{
@ -645,9 +723,14 @@ void MyDialog::cb_activateButton (FWidget* widget, void* data_ptr)
}
//----------------------------------------------------------------------
void MyDialog::cb_view (FWidget*, void*)
void MyDialog::cb_view (FWidget* widget, void*)
{
FString file = FFileDialog::fileOpenChooser (this);
FString file;
FMenuItem* item = static_cast<FMenuItem*>(widget);
if ( item->getText() )
file = item->getText();
else
file = FFileDialog::fileOpenChooser (this);
if ( file.isNull() )
return;