kotschak/qelectrotech-source-mirror
0
0
Fork 0
mirror of https://github.com/qelectrotech/qelectrotech-source-mirror.git synced 2025-12-17 12:40:35 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Diagram editor: users may now enter visualisation mode by pressing Ctrl and Shift.

Browse Source 
git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/branches/0.3@1593 bfdf4180-ca20-0410-9c96-a3a8aa849046
This commit is contained in:
xavier
2012-03-24 14:34:25 +00:00
parent 7370edbb4e
commit 245a8abbb1
2 changed files with 117 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

121
sources/diagramview.cpp
View File

@@ -43,7 +43,7 @@
@param diagram Schema a afficher ; si diagram vaut 0, un nouveau Diagram est utilise
@param parent Le QWidget parent de cette vue de schema
*/
DiagramView::DiagramView(Diagram *diagram, QWidget *parent) : QGraphicsView(parent), is_adding_text(false) {
DiagramView::DiagramView(Diagram *diagram, QWidget *parent) : QGraphicsView(parent), is_adding_text(false), is_moving_view_(false) {
setAttribute(Qt::WA_DeleteOnClose, true);
setInteractive(true);
@@ -364,7 +364,7 @@ void DiagramView::copy() {
@param clipboard_mode Type de presse-papier a prendre en compte
*/
void DiagramView::paste(const QPointF &pos, QClipboard::Mode clipboard_mode) {
if (scene -> isReadOnly()) return;
if (!isInteractive() || scene -> isReadOnly()) return;
QString texte_presse_papier = QApplication::clipboard() -> text(clipboard_mode);
if ((texte_presse_papier).isEmpty()) return;
@@ -397,15 +397,21 @@ void DiagramView::pasteHere() {
* le clic pour ajouter un champ de texte independant
*/
void DiagramView::mousePressEvent(QMouseEvent *e) {
if (e -> buttons() == Qt::MidButton) {
paste(mapToScene(e -> pos()), QClipboard::Selection);
} else {
if (!scene -> isReadOnly() && is_adding_text && e -> buttons() == Qt::LeftButton) {
addDiagramTextAtPos(mapToScene(e -> pos()));
is_adding_text = false;
}
QGraphicsView::mousePressEvent(e);
if (fresh_focus_in_) {
switchToVisualisationModeIfNeeded(e);
fresh_focus_in_ = false;
}
if (isInteractive() && !scene -> isReadOnly()) {
if (e -> buttons() == Qt::MidButton) {
paste(mapToScene(e -> pos()), QClipboard::Selection);
} else {
if (is_adding_text && e -> buttons() == Qt::LeftButton) {
addDiagramTextAtPos(mapToScene(e -> pos()));
is_adding_text = false;
}
}
}
QGraphicsView::mousePressEvent(e);
}
/**
@@ -425,6 +431,35 @@ void DiagramView::wheelEvent(QWheelEvent *e) {
}
}
/**
Handles "Focus in" events. Reimplemented here to store the fact the focus
was freshly acquired again using the mouse. This information is later used
in DiagramView::mousePressEvent().
*/
void DiagramView::focusInEvent(QFocusEvent *e) {
if (e -> reason() == Qt::MouseFocusReason) {
fresh_focus_in_ = true;
}
}
/**
Handles "key press" events. Reimplemented here to switch to visualisation
mode if needed.
*/
void DiagramView::keyPressEvent(QKeyEvent *e) {
switchToVisualisationModeIfNeeded(e);
QGraphicsView::keyPressEvent(e);
}
/**
Handles "key release" events. Reimplemented here to switch to selection
mode if needed.
*/
void DiagramView::keyReleaseEvent(QKeyEvent *e) {
switchToSelectionModeIfNeeded(e);
QGraphicsView::keyReleaseEvent(e);
}
/**
@return le titre de cette vue ; cela correspond au titre du schema
visualise precede de la mention "Schema". Si le titre du schema est vide,
@@ -1005,9 +1040,7 @@ bool DiagramView::event(QEvent *e) {
// vue plutot que de remonter vers les QMenu / QAction
if (
e -> type() == QEvent::ShortcutOverride &&
scene -> hasFocus() &&
scene -> focusItem() &&
scene -> focusItem() -> isSelected()
selectedItemHasFocus()
) {
e -> accept();
return(true);
@@ -1015,6 +1048,66 @@ bool DiagramView::event(QEvent *e) {
return(QGraphicsView::event(e));
}
/**
Switch to visualisation mode if the user is pressing Ctrl and Shift.
@return true if the view was switched to visualisation mode, false
otherwise.
*/
bool DiagramView::switchToVisualisationModeIfNeeded(QInputEvent *e) {
if (isCtrlShifting(e) && !selectedItemHasFocus()) {
if (dragMode() != QGraphicsView::ScrollHandDrag) {
is_moving_view_ = true;
setVisualisationMode();
return(true);
}
}
return(false);
}
/**
Switch back to selection mode if the user is not pressing Ctrl and Shift.
@return true if the view was switched to selection mode, false
otherwise.
*/
bool DiagramView::switchToSelectionModeIfNeeded(QInputEvent *e) {
if (is_moving_view_ && !selectedItemHasFocus() && !isCtrlShifting(e)) {
setSelectionMode();
is_moving_view_ = false;
return(true);
}
return(false);
}
/**
@return true if the user is pressing Ctrl and Shift simultaneously.
*/
bool DiagramView::isCtrlShifting(QInputEvent *e) {
bool result = false;
// note: QInputEvent::modifiers and QKeyEvent::modifiers() do not return the
// same values, hence the casts
if (e -> type() == QEvent::KeyPress || e -> type() == QEvent::KeyRelease) {
if (QKeyEvent *ke = static_cast<QKeyEvent *>(e)) {
result = (ke -> modifiers() == (Qt::ControlModifier | Qt::ShiftModifier));
}
} else if (e -> type() >= QEvent::MouseButtonPress && e -> type() <= QEvent::MouseMove) {
if (QMouseEvent *me = static_cast<QMouseEvent *>(e)) {
result = (me -> modifiers() == (Qt::ControlModifier | Qt::ShiftModifier));
}
}
return(result);
}
/**
@return true if there is a selected item and that item has the focus.
*/
bool DiagramView::selectedItemHasFocus() {
return(
scene -> hasFocus() &&
scene -> focusItem() &&
scene -> focusItem() -> isSelected()
);
}
/**
Passe le DiagramView en mode "ajout de texte". Un clic cree alors un
nouveau champ de texte.
@@ -1031,6 +1124,8 @@ void DiagramView::addText() {
@return le champ de texte ajoute
*/
IndependentTextItem *DiagramView::addDiagramTextAtPos(const QPointF &pos) {
if (!isInteractive() || scene -> isReadOnly()) return(0);
// cree un nouveau champ de texte
IndependentTextItem *iti = new IndependentTextItem("_");