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Fixed: #1301 Added max and min zooming.

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--HG--
branch : gsoc2011-worldeditorqt
This commit is contained in:
dnk-88 2011-08-10 03:04:31 +03:00
parent d19feac70c
commit 3a96a8f8e3
2 changed files with 13 additions and 28 deletions
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39
code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_view.cpp
View file

@ -33,17 +33,15 @@ namespace LandscapeEditor
LandscapeView::LandscapeView(QWidget *parent) LandscapeView::LandscapeView(QWidget *parent)
: QGraphicsView(parent), : QGraphicsView(parent),
m_visibleGrid(true), m_visibleGrid(true),
m_visibleText(false) m_visibleText(true)
{ {
//setDragMode(ScrollHandDrag);
setTransformationAnchor(AnchorUnderMouse); setTransformationAnchor(AnchorUnderMouse);
setBackgroundBrush(QBrush(Qt::lightGray)); setBackgroundBrush(QBrush(Qt::lightGray));
//setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
//setRenderHints(QPainter::Antialiasing);
//setCacheMode(QGraphicsView::CacheBackground);
m_cellSize = 160; m_cellSize = 160;
m_numSteps = 0; m_maxView = 0.06;
m_maxSteps = 20; m_minView = 32.0;
m_maxViewText = 0.6;
//A modified version of centerOn(), handles special cases //A modified version of centerOn(), handles special cases
setCenter(QPointF(500.0, 500.0)); setCenter(QPointF(500.0, 500.0));
@ -72,25 +70,7 @@ void LandscapeView::setVisibleText(bool visible)
void LandscapeView::wheelEvent(QWheelEvent *event) void LandscapeView::wheelEvent(QWheelEvent *event)
{ {
/* double numDegrees = event->delta() / 8.0; //nlinfo(QString("%1").arg(transform().m11()).toStdString().c_str());
double numSteps = numDegrees / 15.0;
double factor = std::pow(1.125, numSteps);
if (factor > 1.0)
{
// check max scale view
if (m_numSteps > m_maxSteps)
return;
++m_numSteps;
}
else
{
// check min scale view
if (m_numSteps < -m_maxSteps)
return;
--m_numSteps;
}
scale(factor, factor);
QGraphicsView::wheelEvent(event);*/
//Get the position of the mouse before scaling, in scene coords //Get the position of the mouse before scaling, in scene coords
QPointF pointBeforeScale(mapToScene(event->pos())); QPointF pointBeforeScale(mapToScene(event->pos()));
@ -102,11 +82,16 @@ void LandscapeView::wheelEvent(QWheelEvent *event)
double scaleFactor = 1.15; //How fast we zoom double scaleFactor = 1.15; //How fast we zoom
if(event->delta() > 0) if(event->delta() > 0)
{ {
if (transform().m11() > m_minView )
return;
//Zoom in //Zoom in
scale(scaleFactor, scaleFactor); scale(scaleFactor, scaleFactor);
} }
else else
{ {
if (transform().m11() < m_maxView )
return;
//Zooming out //Zooming out
scale(1.0 / scaleFactor, 1.0 / scaleFactor); scale(1.0 / scaleFactor, 1.0 / scaleFactor);
} }
@ -242,7 +227,7 @@ void LandscapeView::drawForeground(QPainter *painter, const QRectF &rect)
if (!m_visibleText) if (!m_visibleText)
return; return;
if (m_numSteps > -m_maxSteps / 4) if (transform().m11() > m_maxViewText)
{ {
painter->setPen(QPen(Qt::white, 0.5, Qt::SolidLine)); painter->setPen(QPen(Qt::white, 0.5, Qt::SolidLine));
//painter->setFont(QFont("Helvetica [Cronyx]", 12)); //painter->setFont(QFont("Helvetica [Cronyx]", 12));

2
code/nel/tools/3d/object_viewer_qt/src/plugins/landscape_editor/landscape_view.h
View file

@ -59,7 +59,7 @@ protected:
private: private:
bool m_visibleGrid, m_visibleText; bool m_visibleGrid, m_visibleText;
int m_numSteps, m_maxSteps; qreal m_maxView, m_minView, m_maxViewText;
int m_cellSize; int m_cellSize;
//Holds the current centerpoint for the view, used for panning and zooming //Holds the current centerpoint for the view, used for panning and zooming