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qtmindmap
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Code Issues 13 Pull Requests Releases Wiki Activity

GraphWidget: function member pointers instead of a huge switch in keyPressEvent

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master
Denes Matetelki 14 years ago
parent e4a24126f9
commit f7f2d3145a
2 changed files with 210 additions and 175 deletions
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41
include/graphwidget.h
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@ -27,17 +27,17 @@ public:
public slots:
// commands from MainWindow's MainToolBar's actions
void insertNode();
void removeNode();
void zoomIn();
void zoomOut();
void scaleUp();
void scaleDown();
void nodeColor();
void nodeTextColor();
void addEdge();
void removeEdge();
void hintMode();
void insertNode(QKeyEvent *event = 0);
void removeNode(QKeyEvent *event = 0);
void zoomIn(QKeyEvent *event = 0);
void zoomOut(QKeyEvent *event = 0);
void scaleUp(QKeyEvent *event = 0);
void scaleDown(QKeyEvent *event = 0);
void nodeColor(QKeyEvent *event = 0);
void nodeTextColor(QKeyEvent *event = 0);
void addEdge(QKeyEvent *event = 0);
void removeEdge(QKeyEvent *event = 0);
void hintMode(QKeyEvent *event = 0);
// bundled signals from statusIconsToolBar
void insertPicture(const QString &picture);
@ -45,7 +45,7 @@ public slots:
// node reports back it's state change
void nodeChanged();
void nodeSelected();
void nodeEdited();
void nodeEdited(QKeyEvent *event = 0);
void nodeMoved(QGraphicsSceneMouseEvent *event);
void nodeLostFocus();
@ -67,7 +67,18 @@ private:
void selectNode(Node *node);
// zoom in/out of the view
// keymap commands
void moveUp(QKeyEvent *event);
void moveDown(QKeyEvent *event);
void moveLeft(QKeyEvent *event);
void moveRight(QKeyEvent *event);
void increment(QKeyEvent *event);
void decrement(QKeyEvent *event);
void appendNumber(QKeyEvent *event);
void delNumber(QKeyEvent *event);
void applyNumber(QKeyEvent *event);
void move(const int &x, const int &y, QKeyEvent *event);
void scaleView(qreal scaleFactor);
// functions on the edges
@ -97,8 +108,8 @@ private:
bool m_editingNode;
bool m_edgeAdding;
bool m_edgeDeleting;
bool m_contentChanged;
QString m_fileName;
std::map<int, void(GraphWidget::*)(QKeyEvent *)> m_memberMap;
static const QColor m_paper;
};

344
src/graphwidget.cpp
Unescape View File

@ -25,7 +25,6 @@ GraphWidget::GraphWidget(MainWindow *parent)
, m_editingNode(false)
, m_edgeAdding(false)
, m_edgeDeleting(false)
, m_contentChanged(false)
{
m_scene = new QGraphicsScene(this);
m_scene->setItemIndexMethod(QGraphicsScene::NoIndex);
@ -38,6 +37,69 @@ GraphWidget::GraphWidget(MainWindow *parent)
setTransformationAnchor(AnchorUnderMouse);
setMinimumSize(400, 400);
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Up, &GraphWidget::moveUp));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Down, &GraphWidget::moveDown));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Left, &GraphWidget::moveLeft));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Right, &GraphWidget::moveRight));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Plus, &GraphWidget::increment));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Minus, &GraphWidget::decrement));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_F, &GraphWidget::hintMode));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Insert, &GraphWidget::insertNode));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_0, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_1, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_2, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_3, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_4, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_5, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_6, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_7, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_8, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_9, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_0, &GraphWidget::appendNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_F2, &GraphWidget::nodeEdited));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Backspace, &GraphWidget::delNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Return, &GraphWidget::delNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Enter, &GraphWidget::applyNumber));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_Delete, &GraphWidget::removeNode));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_A, &GraphWidget::addEdge));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_D, &GraphWidget::removeEdge));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_C, &GraphWidget::nodeColor));
m_memberMap.insert(std::pair<int, void(GraphWidget::*)(QKeyEvent *)>
(Qt::Key_T, &GraphWidget::nodeTextColor));
}
void GraphWidget::nodeSelected()
@ -245,8 +307,9 @@ void GraphWidget::writeContentToPngFile(const QString &fileName)
emit notification(tr("MindMap exported as ") + fileName);
}
void GraphWidget::insertNode()
void GraphWidget::insertNode(QKeyEvent *event)
{
Q_UNUSED(event)
nodeLostFocus();
if (!m_activeNode)
@ -295,8 +358,9 @@ void GraphWidget::insertNode()
showNodeNumbers();
}
void GraphWidget::removeNode()
void GraphWidget::removeNode(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -338,8 +402,9 @@ void GraphWidget::removeNode()
showNodeNumbers();
}
void GraphWidget::nodeEdited()
void GraphWidget::nodeEdited(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -351,18 +416,21 @@ void GraphWidget::nodeEdited()
m_scene->setFocusItem(m_activeNode);
}
void GraphWidget::zoomIn()
void GraphWidget::zoomIn(QKeyEvent *event)
{
Q_UNUSED(event)
scaleView(qreal(1.2));
}
void GraphWidget::zoomOut()
void GraphWidget::zoomOut(QKeyEvent *event)
{
Q_UNUSED(event)
scaleView(qreal(1 / 1.2));
}
void GraphWidget::scaleUp()
void GraphWidget::scaleUp(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -382,8 +450,9 @@ void GraphWidget::scaleUp()
}
}
void GraphWidget::scaleDown()
void GraphWidget::scaleDown(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -403,8 +472,9 @@ void GraphWidget::scaleDown()
}
}
void GraphWidget::nodeColor()
void GraphWidget::nodeColor(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -439,8 +509,9 @@ void GraphWidget::nodeColor()
}
}
void GraphWidget::nodeTextColor()
void GraphWidget::nodeTextColor(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_activeNode)
{
emit notification(tr("No active node."));
@ -471,14 +542,16 @@ void GraphWidget::nodeTextColor()
node->setTextColor(color);
}
void GraphWidget::addEdge()
void GraphWidget::addEdge(QKeyEvent *event)
{
Q_UNUSED(event)
emit notification(tr("Add edge: select destination node."));
m_edgeAdding = true;
}
void GraphWidget::removeEdge()
void GraphWidget::removeEdge(QKeyEvent *event)
{
Q_UNUSED(event)
emit notification(tr("Delete edge: select other end-node."));
m_edgeDeleting = true;
}
@ -519,8 +592,10 @@ void GraphWidget::nodeLostFocus()
}
}
void GraphWidget::hintMode()
void GraphWidget::hintMode(QKeyEvent *event)
{
Q_UNUSED(event)
// vimperator-style node selection with keys.
// show or hide the numbers if we enter/leave this mode.
m_showingNodeNumbers = !m_showingNodeNumbers;
@ -565,154 +640,9 @@ void GraphWidget::keyPressEvent(QKeyEvent *event)
return;
}
switch (event->key())
{
// move
case Qt::Key_Up:
case Qt::Key_Down:
case Qt::Key_Left:
case Qt::Key_Right:
if (!m_activeNode)
{
emit notification(tr("No active node."));
return;
}
if (event->modifiers() & Qt::ControlModifier)
{
// Move whole subtree of active Node.
if (event->modifiers() & Qt::ShiftModifier)
{
QList <Node *> nodeList = m_activeNode->subtree();
foreach(Node *node, nodeList)
{
if (event->key() == Qt::Key_Up) node->moveBy(0, -20);
else if (event->key() == Qt::Key_Down) node->moveBy(0, 20);
else if (event->key() == Qt::Key_Left) node->moveBy(-20, 0);
else if (event->key() == Qt::Key_Right) node->moveBy(20, 0);
emit contentChanged();
}
}
else // Move just the active Node.
{
if (event->key() == Qt::Key_Up)
m_activeNode->moveBy(0, -20);
else if (event->key() == Qt::Key_Down)
m_activeNode->moveBy(0, 20);
else if (event->key() == Qt::Key_Left)
m_activeNode->moveBy(-20, 0);
else if (event->key() == Qt::Key_Right)
m_activeNode->moveBy(20, 0);
emit contentChanged();
}
}
else // Move scene.
{
QGraphicsView::keyPressEvent(event);
}
break;
case Qt::Key_Plus:
event->modifiers() & Qt::ControlModifier ?
scaleUp() :
zoomIn();
break;
case Qt::Key_Minus:
event->modifiers() & Qt::ControlModifier ?
scaleDown() :
zoomOut();
break;
// Hint mode: select a Node vimperator-style.
case Qt::Key_F:
hintMode();
break;
case Qt::Key_Insert:
insertNode();
break;
// Used in hint mode, to select node with numbers/backspace/enter.
case Qt::Key_0:
case Qt::Key_1:
case Qt::Key_2:
case Qt::Key_3:
case Qt::Key_4:
case Qt::Key_5:
case Qt::Key_6:
case Qt::Key_7:
case Qt::Key_8:
case Qt::Key_9:
if (!m_showingNodeNumbers)
break;
m_hintNumber.append(QString::number(event->key()-48));
showingAllNodeNumbers(false);
showingNodeNumbersBeginWithNumber(m_hintNumber.toInt(), true);
break;
// Delete one letter back in hint mode.
case Qt::Key_Backspace:
if (!m_showingNodeNumbers && m_hintNumber.isEmpty())
break;
m_hintNumber.remove(m_hintNumber.length()-1,1);
showNodeNumbers();
break;
// In hint mode select the suggested Node.
case Qt::Key_Return:
case Qt::Key_Enter:
if (m_hintNode && m_showingNodeNumbers)
selectNode(m_hintNode);
break;
case Qt::Key_F2:
nodeEdited();
break;
case Qt::Key_Delete:
removeNode();
break;
case Qt::Key_A:
addEdge();
break;
case Qt::Key_D:
removeEdge();
break;
case Qt::Key_C:
nodeColor();
break;
case Qt::Key_T:
nodeTextColor();
break;
default:
m_memberMap.find(event->key()) != m_memberMap.end() ?
(this->*m_memberMap[event->key()])(event) :
QGraphicsView::keyPressEvent(event);
}
}
void GraphWidget::wheelEvent(QWheelEvent *event)
@ -774,6 +704,100 @@ void GraphWidget::selectNode(Node *node)
}
}
void GraphWidget::moveUp(QKeyEvent *event)
{
move(-20,0,event);
}
void GraphWidget::moveDown(QKeyEvent *event)
{
move(20,0,event);
}
void GraphWidget::moveLeft(QKeyEvent *event)
{
move(0,-20,event);
}
void GraphWidget::moveRight(QKeyEvent *event)
{
move(0,20,event);
}
void GraphWidget::increment(QKeyEvent *event)
{
Q_UNUSED(event)
QApplication::keyboardModifiers() & Qt::ControlModifier ?
scaleDown() :
zoomOut();
}
void GraphWidget::decrement(QKeyEvent *event)
{
Q_UNUSED(event)
QApplication::keyboardModifiers() & Qt::ControlModifier ?
scaleDown() :
zoomOut();
}
void GraphWidget::appendNumber(QKeyEvent *event)
{
if (!m_showingNodeNumbers)
return;
m_hintNumber.append(QString::number(event->key()-48));
showingAllNodeNumbers(false);
showingNodeNumbersBeginWithNumber(m_hintNumber.toInt(), true);
}
void GraphWidget::delNumber(QKeyEvent *event)
{
Q_UNUSED(event)
if (!m_showingNodeNumbers && m_hintNumber.isEmpty())
return;
m_hintNumber.remove(m_hintNumber.length()-1,1);
showNodeNumbers();
}
void GraphWidget::applyNumber(QKeyEvent *event)
{
Q_UNUSED(event)
if (m_hintNode && m_showingNodeNumbers)
selectNode(m_hintNode);
}
void GraphWidget::move(const int &x, const int &y, QKeyEvent *event)
{
if (!m_activeNode)
{
emit notification(tr("No active node."));
return;
}
if (QApplication::keyboardModifiers() & Qt::ControlModifier)
{
// Move whole subtree of active Node.
if (QApplication::keyboardModifiers() & Qt::ShiftModifier)
{
QList <Node *> nodeList = m_activeNode->subtree();
foreach(Node *node, nodeList)
node->moveBy(x, y);
emit contentChanged();
}
else // Move just the active Node.
{
m_activeNode->moveBy(x, y);
emit contentChanged();
}
}
else // Move scene.
{
QGraphicsView::keyPressEvent(event);
}
}
void GraphWidget::scaleView(qreal scaleFactor)
{
qreal factor = transform().scale(scaleFactor, scaleFactor).

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