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Amelioration de la gestion de la scene (prise en compte du cadre et de ses modifications)

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git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@74 bfdf4180-ca20-0410-9c96-a3a8aa849046
This commit is contained in:
xavierqet
2007-03-03 23:35:14 +00:00
parent c13c36796f
commit b6588177bb
4 changed files with 60 additions and 30 deletions
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75
diagramview.cpp
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@@ -21,7 +21,7 @@ void DiagramView::initialise() {
setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
setResizeAnchor(QGraphicsView::AnchorUnderMouse);
setAlignment(Qt::AlignLeft | Qt::AlignTop);
setSceneRect(QRectF(0.0, 0.0, scene -> border_and_inset.borderWidth() + 10.0, scene -> border_and_inset.borderHeight() + 10.0));
adjustSceneRect();
connect(scene, SIGNAL(selectionEmptinessChanged()), this, SLOT(slot_selectionChanged()));
}
@@ -233,13 +233,8 @@ void DiagramView::zoomFit() {
zoomReset();
return;
}
QRectF vue = scene -> itemsBoundingRect();
// la marge = 5 % de la longueur necessaire
qreal marge = 0.05 * vue.width();
vue.translate(-marge, -marge);
vue.setWidth(vue.width() + 2.0 * marge);
vue.setHeight(vue.height() + 2.0 * marge);
fitInView(vue, Qt::KeepAspectRatio);
adjustSceneRect();
fitInView(sceneRect(), Qt::KeepAspectRatio);
}
/**
@@ -495,9 +490,7 @@ void DiagramView::addColumn() {
scene -> border_and_inset.addColumn();
// met a jour la zone affichee par la vue
QRectF sr = sceneRect();
sr.setWidth(5.0 + scene -> border_and_inset.borderWidth());
setSceneRect(sr);
adjustSceneRect();
// rafraichit la vue
scene -> update(sceneRect());
@@ -506,29 +499,59 @@ void DiagramView::addColumn() {
void DiagramView::removeColumn() {
scene -> border_and_inset.removeColumn();
// on pourrait mettre a jour la zone affichee par la vue
// met a jour la zone affichee par la vue
QRectF old_sr = sceneRect();
adjustSceneRect();
// rafraichit la vue
scene -> update(sceneRect());
scene -> update(old_sr);
}
void DiagramView::expand() {
// ajoute 10 pixels
scene -> border_and_inset.setColumnsHeight(scene -> border_and_inset.columnsHeight() + 20.0);
// met a jour la zone affichee par la vue
QRectF sr = sceneRect();
sr.setHeight(20.0 + sr.height());
setSceneRect(sr);
// rafraichit la vue
scene -> update(sceneRect());
adjustHeight(20.0);
}
void DiagramView::shrink() {
// enleve 10 pixels
scene -> border_and_inset.setColumnsHeight(scene -> border_and_inset.columnsHeight() - 20.0);
adjustHeight(-20.0);
}
/**
Change la hauteur du schema
@param height_change Le changement de hauteur ; exemple : -5.0 retrecit
le cadre de 5 pixels
*/
void DiagramView::adjustHeight(qreal height_change) {
// reference vers le "border and inset" du schema
BorderInset &border = scene -> border_and_inset;
// calcule la nouvelle hauteur des colonnes
qreal new_height = border.columnsHeight() + height_change;
if (new_height <= border.minColumnsHeight()) return;
// applique la reduction
border.setColumnsHeight(new_height);
// met a jour la zone affichee par la vue
QRectF old_sr = sceneRect();
adjustSceneRect();
QRectF new_sr = sceneRect();
// rafraichit la vue
scene -> update(sceneRect());
scene -> update(height_change < 0 ? old_sr : new_sr);
}
/**
Ajuste le sceneRect (zone du schema visualisee par le DiagramView) afin que
celui inclut a la fois les elements dans et en dehors du cadre et le cadre
lui-meme.
*/
void DiagramView::adjustSceneRect() {
// rectangle delimitant l'ensemble des elements
QRectF elements_bounding_rect = scene -> itemsBoundingRect();
// rectangle contenant le cadre = colonnes + cartouche
QRectF border_bounding_rect = scene -> border().adjusted(-MARGIN, -MARGIN, MARGIN, MARGIN);
// ajuste la sceneRect
setSceneRect(elements_bounding_rect.united(border_bounding_rect));
}