void imageCompareBase::setConnections() {
connect(switchAction_, SIGNAL(triggered()),
this, SLOT(switchSides()));
connect(centerSplitterAction_, SIGNAL(triggered()),
this, SLOT(centerSplitter()));
connect(leftFocusAction_, SIGNAL(triggered()),
this, SLOT(focusLeft()));
connect(leftImageMenu_, SIGNAL(triggered(QAction* )),
this, SLOT(processLeftImageMenuTrigger(QAction* )));
connect(leftImageListBox_, SIGNAL(activated(const QString& )),
this, SLOT(processLeftBox(const QString& )));
connect(leftShowHide_, SIGNAL(triggered(bool )),
this, SLOT(showHideLeft(bool )));
connect(leftDelete_, SIGNAL(triggered()),
this, SLOT(deleteLeft()));
connect(rightFocusAction_, SIGNAL(triggered()),
this, SLOT(focusRight()));
connect(rightImageMenu_, SIGNAL(triggered(QAction* )),
this, SLOT(processRightImageMenuTrigger(QAction* )));
connect(rightImageListBox_, SIGNAL(activated(const QString& )),
this, SLOT(processRightBox(const QString& )));
connect(rightShowHide_, SIGNAL(triggered(bool )),
this, SLOT(showHideRight(bool )));
connect(rightDelete_, SIGNAL(triggered()),
this, SLOT(deleteRight()));
connect(dualZoomingAction_, SIGNAL(triggered(bool )),
this, SLOT(updateDualZooming(bool )));
// connect scrolling on the two images
setScrollingConnections(true);
}
Tree deleteTree(Tree t, TreeEntry e, int *diminuiu) {
// Node with entry e is supposed to exist. Before deleteTree, call searchTree.
Tree aux, min;
// step 1 - remove node with entry e
if(e == t->entry) {
if(isLeaf(t)) { // if node with entry e is a leaf, just (physically) remove it
aux = t;
t = NULL;
free(aux);
*diminuiu = 1;
}
else if(has1child(t)) {
switch(t->bf) { // if node with entry e has only 1 child, check balance factor
case LH: // overwrite node entry with left child entry and remove left child
aux = t->left;
t->entry = aux->entry;
t->left = NULL;
free(aux);
break;
case RH: // set node entry to right child entry and remove right child
aux = t->right;
t->entry = aux->entry;
t->right = NULL;
free(aux);
break;
}
*diminuiu = 1;
}
else { // if node with entry e has both subtrees
aux = minEntry(t->right);
t->entry = aux->entry; // overwrite t's entry with the smallest entry in the right subtree
t->right = deleteTree(t->right,aux->entry,diminuiu);
}
}
else if(e < t->entry)
t = deleteLeft(t, e, diminuiu);
else
t = deleteRight(t, e, diminuiu);
// step 2 - rebalance the tree (if necessary)
return t;
}
int main(int argc, const char * argv[]) {
DQUEUE_p_t queue = (DQUEUE_p_t)calloc(SIZE, sizeof(DQUEUE_t));
initQueue (queue);
char choice;
do {
printf("\n------------------------------------------------------------\n | 1. Insert Left\n | 2. Insert Right\n | 3. Delete Left\n | 4. Delete Right\n | 5. Display Queue.\n | Q. Quit\n | Enter choice : ");
choice = getchar();
getchar();
char * item = (char *)malloc(SIZE * sizeof(char));
if (choice == '1') {
printf("\n | Enter item to be inserted: ");
fgets(item, SIZE, stdin);
insertLeft(queue, item);
}
else if (choice == '2') {
printf("\n | Enter item to be inserted: ");
fgets(item, SIZE, stdin);
insertRight(queue, item);
}
else if (choice == '3') {
item = deleteLeft(queue);
if (item != UNDERFLOW_CHAR)
printf("\n | Deleted item: %s\n", item);
}
else if (choice == '4') {
item = deleteRight(queue);
if (item != UNDERFLOW_CHAR)
printf("\n | Deleted item: %s\n", item);
}
display(*queue);
} while (choice >= '1' && choice <= '5');
return 0;
}
//Key press event: Does most of the things in this editor:
void CodeEditor::keyPressEvent(QKeyEvent *e)
{
e->accept();
/* Code Editor features:
• Code completion
• Auto Indentation
• Autoclose for () [] {} " ' and comments
*/
//First: The keyboard controlling
Qt::KeyboardModifiers mods = e->modifiers();
bool Shift = mods.testFlag(Qt::ShiftModifier);
bool Ctrl = mods.testFlag(Qt::ControlModifier); // COMMAND key on Mac OS
bool Alt = mods.testFlag(Qt::AltModifier);
switch(e->key())
{
//Movement & selection
case Qt::Key_Right:
moveRight(Ctrl,Shift);
break;
case Qt::Key_Left:
moveLeft(Ctrl,Shift);
break;
case Qt::Key_Up:
moveUp(Shift);
break;
case Qt::Key_Down:
moveDown(Shift);
break;
case Qt::Key_Home:
if(Ctrl)moveToBeginOfDocument(Shift);
else moveToLineBegin(Shift);
break;
case Qt::Key_End:
if(Ctrl)moveToEndOfDocument(Shift);
else moveToLineEnd(Shift);
break;
//Deleting and clearing
case Qt::Key_Backspace:
deleteLeft(Ctrl);
break;
case Qt::Key_Delete:
deleteRight(Ctrl);
break;
//Misc
case Qt::Key_Escape:
//Close the completer if it's shown
break;
case Qt::Key_Enter:
case Qt::Key_Return:
newLineAtCursor();
break;
//Function keys
case Qt::Key_Tab:
insertTextAtCursor("\t");
break;
case Qt::Key_Insert:
if(Shift)paste();
else if(Ctrl)copySelection();
else insertMode=!insertMode;
break;
case Qt::Key_F3:
//Search & replace functionality TODO: not important
break;
case Qt::Key_F1:
case Qt::Key_F2:
case Qt::Key_F4:
case Qt::Key_F5:
case Qt::Key_F6:
case Qt::Key_F7:
case Qt::Key_F8:
case Qt::Key_F9:
case Qt::Key_F10:
case Qt::Key_F11:
case Qt::Key_F12:
case Qt::Key_F13:
case Qt::Key_F14:
case Qt::Key_F15:
case Qt::Key_F16:
case Qt::Key_F17:
case Qt::Key_F18:
case Qt::Key_F19:
case Qt::Key_F20:
case Qt::Key_F21:
case Qt::Key_F22:
case Qt::Key_F23:
case Qt::Key_F24:
//Just NO-OP for now!
break;
//NO-OPs:
case Qt::Key_CapsLock:
case Qt::Key_NumLock:
case Qt::Key_ScrollLock:
case Qt::Key_Pause:
case Qt::Key_Print:
case Qt::Key_SysReq:
case Qt::Key_Control:
case Qt::Key_Alt:
case Qt::Key_AltGr:
case Qt::Key_Super_L:
case Qt::Key_Super_R:
case Qt::Key_Meta:
break;
default:
if(e->key()==Qt::Key_V && Ctrl)paste();
else if(e->key()==Qt::Key_C && Ctrl)copySelection();
else if(e->key()==Qt::Key_X && Ctrl){copySelection();clearSelection();}
else if(e->key()==Qt::Key_Z && Ctrl)undo();
else if(e->key()==Qt::Key_Y && Ctrl)redo();
else if(e->key()==Qt::Key_A && Ctrl)selectAll();
//Type the character:
else if(!Ctrl)insertTextAtCursor(e->text());
}
cursorVisible=true;
viewport()->repaint();
}
