finalcut/src/flineedit.cpp

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// File: flineedit.cpp
// Provides: class FLineEdit
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#include "fapp.h"
#include "flineedit.h"
#include "fstatusbar.h"
//----------------------------------------------------------------------
// class FLineEdit
//----------------------------------------------------------------------
// constructor and destructor
//----------------------------------------------------------------------
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FLineEdit::FLineEdit(FWidget* parent)
: FWidget(parent)
, text("")
, label_text("")
, label(new FLabel("", parent))
, label_orientation(FLineEdit::label_left)
, drag_scroll(FLineEdit::noScroll)
, scroll_timer(false)
, scroll_repeat(100)
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, insert_mode(true)
, cursor_pos(0)
, text_offset(0)
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{
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init();
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}
//----------------------------------------------------------------------
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FLineEdit::FLineEdit (const FString& txt, FWidget* parent)
: FWidget(parent)
, text(txt)
, label_text("")
, label(new FLabel("", parent))
, label_orientation(FLineEdit::label_left)
, drag_scroll(FLineEdit::noScroll)
, scroll_timer(false)
, scroll_repeat(100)
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, insert_mode(true)
, cursor_pos(0)
, text_offset(0)
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{
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init();
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setText(txt);
}
//----------------------------------------------------------------------
FLineEdit::~FLineEdit() // destructor
{
if ( ! insert_mode )
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setInsertCursorStyle();
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}
// public methods of FLineEdit
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//----------------------------------------------------------------------
bool FLineEdit::setEnable (bool on)
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{
FWidget::setEnable(on);
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if ( on )
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{
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flags |= fc::active;
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if ( hasFocus() )
{
setForegroundColor (wc.inputfield_active_focus_fg);
setBackgroundColor (wc.inputfield_active_focus_bg);
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}
else
{
setForegroundColor (wc.inputfield_active_fg);
setBackgroundColor (wc.inputfield_active_bg);
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}
}
else
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{
flags &= ~fc::active;
setForegroundColor (wc.inputfield_inactive_fg);
setBackgroundColor (wc.inputfield_inactive_bg);
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}
return on;
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}
//----------------------------------------------------------------------
bool FLineEdit::setFocus (bool on)
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{
FWidget::setFocus(on);
if ( on )
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{
flags |= fc::focus;
if ( isEnabled() )
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{
setForegroundColor (wc.inputfield_active_focus_fg);
setBackgroundColor (wc.inputfield_active_focus_bg);
if ( getStatusBar() )
{
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const FString& msg = getStatusbarMessage();
const FString& curMsg = getStatusBar()->getMessage();
if ( curMsg != msg )
getStatusBar()->setMessage(msg);
}
}
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}
else
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{
flags &= ~fc::focus;
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if ( isEnabled() )
{
setForegroundColor (wc.inputfield_active_fg);
setBackgroundColor (wc.inputfield_active_bg);
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if ( getStatusBar() )
getStatusBar()->clearMessage();
}
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}
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return on;
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}
//----------------------------------------------------------------------
bool FLineEdit::setShadow (bool on)
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{
if ( on
&& Encoding != fc::VT100
&& Encoding != fc::ASCII )
{
flags |= fc::shadow;
setShadowSize(1,1);
}
else
{
flags &= ~fc::shadow;
setShadowSize(0,0);
}
return on;
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}
//----------------------------------------------------------------------
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void FLineEdit::setText (const FString& txt)
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{
text_offset = 0;
cursor_pos = 0;
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if ( txt )
text = txt;
else
text = "";
}
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//----------------------------------------------------------------------
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void FLineEdit::setLabelText (const FString& ltxt)
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{
label_text = ltxt;
label->setText(label_text);
adjustLabel();
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}
//----------------------------------------------------------------------
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void FLineEdit::setLabelOrientation(const label_o o)
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{
label_orientation = o;
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adjustLabel();
}
//----------------------------------------------------------------------
void FLineEdit::hide()
{
int s, size;
short fg, bg;
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char* blank;
FWidget* parent_widget = getParentWidget();
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FWidget::hide();
if ( parent_widget )
{
fg = parent_widget->getForegroundColor();
bg = parent_widget->getBackgroundColor();
}
else
{
fg = wc.dialog_fg;
bg = wc.dialog_bg;
}
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setColor (fg, bg);
s = hasShadow() ? 1 : 0;
size = getWidth() + s;
if ( size < 0 )
return;
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blank = new char[size+1];
std::memset(blank, ' ', uLong(size));
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blank[size] = '\0';
for (int y=0; y < getHeight()+s; y++)
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{
setPrintPos (1, 1+y);
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print (blank);
}
delete[] blank;
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if ( label )
label->hide();
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}
//----------------------------------------------------------------------
void FLineEdit::clearText()
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{
text_offset = 0;
cursor_pos = 0;
text.clear();
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}
//----------------------------------------------------------------------
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void FLineEdit::onKeyPress (FKeyEvent* ev)
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{
int len = int(text.getLength());
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int key = ev->key();
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switch ( key )
{
case fc::Fkey_left:
cursor_pos--;
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if ( cursor_pos < 0 )
cursor_pos=0;
if ( cursor_pos < text_offset )
text_offset--;
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ev->accept();
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break;
case fc::Fkey_right:
cursor_pos++;
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if ( cursor_pos >= len )
cursor_pos=len;
if ( cursor_pos-text_offset >= getWidth()-2 && text_offset <= len-getWidth()+1 )
text_offset++;
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ev->accept();
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break;
case fc::Fkey_home:
cursor_pos=0;
text_offset=0;
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ev->accept();
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break;
case fc::Fkey_end:
cursor_pos=len;
if ( cursor_pos >= getWidth()-1 )
text_offset=len-getWidth()+2;
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ev->accept();
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break;
case fc::Fkey_dc: // del key
if ( len > 0 && cursor_pos < len )
{
text.remove(uInt(cursor_pos), 1);
processChanged();
}
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if ( cursor_pos >= len )
cursor_pos=len;
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if ( cursor_pos < 0 )
cursor_pos=0;
if ( text_offset > 0 && len-text_offset < getWidth()-1 )
text_offset--;
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ev->accept();
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break;
case fc::Fkey_erase:
case fc::Fkey_backspace:
if ( len > 0 && cursor_pos > 0 )
{
text.remove(uInt(cursor_pos-1), 1);
processChanged();
cursor_pos--;
if ( text_offset > 0 )
text_offset--;
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}
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ev->accept();
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break;
case fc::Fkey_ic: // insert key
insert_mode = not insert_mode;
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if ( insert_mode )
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setInsertCursorStyle();
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else
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unsetInsertCursorStyle();
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ev->accept();
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break;
case fc::Fkey_return:
case fc::Fkey_enter:
processActivate();
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ev->accept();
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break;
case fc::Fkey_tab:
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ev->ignore();
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break;
default:
if ( key >= 0x20 && key <= 0x10fff )
{
if ( cursor_pos == len )
{
text += wchar_t(key);
processChanged();
}
else if ( len > 0 )
{
if ( insert_mode )
text.insert(wchar_t(key), uInt(cursor_pos));
else
text.overwrite(wchar_t(key), uInt(cursor_pos));
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processChanged();
}
else
{
text = wchar_t(key);
processChanged();
}
cursor_pos++;
if ( cursor_pos >= getWidth()-1 )
text_offset++;
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ev->accept();
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}
else
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ev->ignore();
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}
// end of switch
if ( ev->isAccepted()
&& key != fc::Fkey_return
&& key != fc::Fkey_enter )
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{
drawInputField();
updateTerminal();
}
}
//----------------------------------------------------------------------
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void FLineEdit::onMouseDown (FMouseEvent* ev)
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{
int mouse_x, mouse_y;
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if ( ev->getButton() != fc::LeftButton )
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return;
if ( ! hasFocus() )
{
FWidget* focused_widget = getFocusWidget();
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FFocusEvent out (fc::FocusOut_Event);
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FApplication::queueEvent(focused_widget, &out);
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setFocus();
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if ( focused_widget )
focused_widget->redraw();
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redraw();
if ( getStatusBar() )
getStatusBar()->drawMessage();
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}
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mouse_x = ev->getX();
mouse_y = ev->getY();
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if ( mouse_x >= 2 && mouse_x <= getWidth() && mouse_y == 1 )
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{
int len = int(text.getLength());
cursor_pos = text_offset + mouse_x - 2;
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if ( cursor_pos >= len )
cursor_pos = len;
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drawInputField();
updateTerminal();
}
}
//----------------------------------------------------------------------
void FLineEdit::onMouseUp (FMouseEvent*)
{
if ( drag_scroll != FLineEdit::noScroll )
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{
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delOwnTimer();
drag_scroll = FLineEdit::noScroll;
scroll_timer = false;
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}
}
//----------------------------------------------------------------------
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void FLineEdit::onMouseMove (FMouseEvent* ev)
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{
int len, mouse_x, mouse_y;
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if ( ev->getButton() != fc::LeftButton )
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return;
len = int(text.getLength());
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mouse_x = ev->getX();
mouse_y = ev->getY();
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if ( mouse_x >= 2 && mouse_x <= getWidth() && mouse_y == 1 )
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{
cursor_pos = text_offset + mouse_x - 2;
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if ( cursor_pos >= len )
cursor_pos=len;
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drawInputField();
updateTerminal();
}
// auto-scrolling when dragging mouse outside the widget
if ( mouse_x < 2 )
{
// drag left
if ( ! scroll_timer && text_offset > 0 )
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{
scroll_timer = true;
addTimer(scroll_repeat);
drag_scroll = FLineEdit::scrollLeft;
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}
if ( text_offset == 0 )
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{
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delOwnTimer();
drag_scroll = FLineEdit::noScroll;
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}
}
else if ( mouse_x >= getWidth() )
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{
// drag right
if ( ! scroll_timer && text_offset <= len-getWidth()+1 )
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{
scroll_timer = true;
addTimer(scroll_repeat);
drag_scroll = FLineEdit::scrollRight;
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}
if ( text_offset == len-getWidth()+2 )
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{
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delOwnTimer();
drag_scroll = FLineEdit::noScroll;
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}
}
else
{
// no dragging
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delOwnTimer();
scroll_timer = false;
drag_scroll = FLineEdit::noScroll;
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}
}
//----------------------------------------------------------------------
void FLineEdit::onTimer (FTimerEvent*)
{
int len = int(text.getLength());
switch ( int(drag_scroll) )
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{
case FLineEdit::noScroll:
return;
case FLineEdit::scrollLeft:
if ( text_offset == 0)
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{
drag_scroll = FLineEdit::noScroll;
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return;
}
text_offset--;
if ( text_offset < 0 )
text_offset = 0;
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cursor_pos--;
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if ( cursor_pos < 0 )
cursor_pos = 0;
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break;
case FLineEdit::scrollRight:
if ( text_offset == len-getWidth()+2 )
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{
drag_scroll = FLineEdit::noScroll;
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return;
}
text_offset++;
if ( text_offset > len-getWidth()+2 )
text_offset = len-getWidth()+2;
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cursor_pos++;
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if ( cursor_pos > len )
cursor_pos = len;
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break;
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default:
break;
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}
drawInputField();
updateTerminal();
}
//----------------------------------------------------------------------
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void FLineEdit::onAccel (FAccelEvent* ev)
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{
if ( ! isEnabled() )
return;
if ( ! hasFocus() )
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{
FWidget* focused_widget = static_cast<FWidget*>(ev->focusedWidget());
FFocusEvent out (fc::FocusOut_Event);
FApplication::queueEvent(focused_widget, &out);
setFocus();
if ( focused_widget )
focused_widget->redraw();
redraw();
if ( getStatusBar() )
{
getStatusBar()->drawMessage();
updateTerminal();
flush_out();
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}
}
ev->accept();
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}
//----------------------------------------------------------------------
void FLineEdit::onHide (FHideEvent*)
{
if ( ! insert_mode )
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setInsertCursorStyle();
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}
//----------------------------------------------------------------------
void FLineEdit::onFocusIn (FFocusEvent*)
{
if ( insert_mode )
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setInsertCursorStyle();
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else
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unsetInsertCursorStyle();
if ( getStatusBar() )
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{
getStatusBar()->drawMessage();
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updateTerminal();
flush_out();
}
}
//----------------------------------------------------------------------
void FLineEdit::onFocusOut (FFocusEvent*)
{
if ( getStatusBar() )
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{
getStatusBar()->clearMessage();
getStatusBar()->drawMessage();
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}
if ( ! insert_mode )
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setInsertCursorStyle();
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}
// protected methods of FListBox
//----------------------------------------------------------------------
void FLineEdit::adjustLabel()
{
int label_length = int(label_text.getLength());
if ( hasHotkey() )
label_length--;
assert ( label_orientation == label_above
|| label_orientation == label_left );
switch ( label_orientation )
{
case label_above:
label->setGeometry(getX(), getY()-1, label_length, 1);
break;
case label_left:
label->setGeometry(getX()-label_length-1, getY(), label_length, 1);
break;
}
}
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//----------------------------------------------------------------------
void FLineEdit::adjustSize()
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{
FWidget::adjustSize();
adjustLabel();
}
// private methods of FLineEdit
//----------------------------------------------------------------------
void FLineEdit::init()
{
label->setAccelWidget(this);
setVisibleCursor();
setShadow();
if ( hasFocus() )
flags |= fc::focus;
if ( isEnabled() )
{
flags |= fc::active;
if ( hasFocus() )
{
setForegroundColor (wc.inputfield_active_focus_fg);
setBackgroundColor (wc.inputfield_active_focus_bg);
}
else
{
setForegroundColor (wc.inputfield_active_fg);
setBackgroundColor (wc.inputfield_active_bg);
}
}
else // inactive
{
setForegroundColor (wc.inputfield_inactive_fg);
setBackgroundColor (wc.inputfield_inactive_bg);
}
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}
//----------------------------------------------------------------------
bool FLineEdit::hasHotkey()
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{
if ( label_text.isEmpty() )
return 0;
return label_text.includes('&');
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}
//----------------------------------------------------------------------
void FLineEdit::draw()
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{
bool isFocus;
drawInputField();
isFocus = ((flags & fc::focus) != 0);
if ( isFocus && getStatusBar() )
{
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const FString& msg = getStatusbarMessage();
const FString& curMsg = getStatusBar()->getMessage();
if ( curMsg != msg )
{
getStatusBar()->setMessage(msg);
getStatusBar()->drawMessage();
}
}
}
//----------------------------------------------------------------------
void FLineEdit::drawInputField()
{
bool isActiveFocus, isShadow;
int x;
FString show_text;
int active_focus = fc::active + fc::focus;
isActiveFocus = ((flags & active_focus) == active_focus);
isShadow = ((flags & fc::shadow) != 0 );
setPrintPos (1, 1);
if ( isMonochron() )
{
setReverse(true);
print (' ');
if ( isActiveFocus )
setReverse(false);
else
setUnderline(true);
}
else
{
setColor();
print (' ');
}
if ( isActiveFocus && getMaxColor() < 16 )
setBold();
show_text = text.mid(uInt(1+text_offset), uInt(getWidth()-2));
if ( isUTF8_linux_terminal() )
{
setUTF8(true);
if ( show_text )
print (show_text);
setUTF8(false);
}
else if ( show_text )
print (show_text);
x = int(show_text.getLength());
while ( x < getWidth()-1 )
{
print (' ');
x++;
}
if ( isActiveFocus && getMaxColor() < 16 )
unsetBold();
if ( isMonochron() )
{
setReverse(false);
setUnderline(false);
}
if ( isShadow )
drawShadow ();
// set the cursor to the first pos.
setCursorPos (2+cursor_pos-text_offset, 1);
}
//----------------------------------------------------------------------
void FLineEdit::processActivate()
{
if ( ! hasFocus() )
{
setFocus();
redraw();
}
emitCallback("activate");
}
//----------------------------------------------------------------------
void FLineEdit::processChanged()
{
emitCallback("changed");
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}