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Implement automatic scaling

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This commit is contained in:
WandererFan
2016-08-05 14:12:47 -04:00
committed by wmayer
parent fa57b7a5de
commit cf90d69319
16 changed files with 198 additions and 78 deletions
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83
src/Mod/TechDraw/App/DrawView.cpp
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@@ -79,69 +79,63 @@ DrawView::~DrawView()
{
}
App::DocumentObjectExecReturn *DrawView::recompute(void)
{
try {
return App::DocumentObject::recompute();
}
catch (Standard_Failure) {
Handle_Standard_Failure e = Standard_Failure::Caught();
App::DocumentObjectExecReturn* ret = new App::DocumentObjectExecReturn(e->GetMessageString());
if (ret->Why.empty()) ret->Why = "Unknown OCC exception";
return ret;
}
}
App::DocumentObjectExecReturn *DrawView::execute(void)
{
//right way to handle this? can't do it at creation since don't have a parent.
if (ScaleType.isValue("Document")) {
TechDraw::DrawPage *page = findParentPage();
if(page) {
TechDraw::DrawPage *page = findParentPage();
if(page) {
if (ScaleType.isValue("Document")) {
if(std::abs(page->Scale.getValue() - Scale.getValue()) > FLT_EPSILON) {
Scale.setValue(page->Scale.getValue());
Scale.touch();
}
} else if (ScaleType.isValue("Automatic")) {
//check fit. if too big, rescale
if (!checkFit(page)) {
double newScale = autoScale(page->getPageWidth(),page->getPageHeight());
if(std::abs(newScale - Scale.getValue()) > FLT_EPSILON) { //stops onChanged/execute loop
Scale.setValue(newScale);
}
}
}
}
return App::DocumentObject::execute();
}
/// get called by the container when a Property was changed
void DrawView::onChanged(const App::Property* prop)
{
if (!isRestoring()) {
if (prop == &ScaleType ||
prop == &Scale) {
if (prop == &Scale) {
execute();
} else if (prop == &ScaleType) {
if (ScaleType.isValue("Document")) {
TechDraw::DrawPage *page = findParentPage();
if(page) {
if(std::abs(page->Scale.getValue() - Scale.getValue()) > FLT_EPSILON) {
Scale.setValue(page->Scale.getValue()); // Reset scale from page
Scale.touch();
}
}
Scale.setStatus(App::Property::ReadOnly,true);
App::GetApplication().signalChangePropertyEditor(Scale);
} else if ( ScaleType.isValue("Custom") ) {
Scale.setStatus(App::Property::ReadOnly,false);
App::GetApplication().signalChangePropertyEditor(Scale);
} else if ( ScaleType.isValue("Automatic") ) {
Scale.setStatus(App::Property::ReadOnly,true);
App::GetApplication().signalChangePropertyEditor(Scale);
}
//TODO else if (ScaleType.isValue("Automatic"))...
DrawView::execute();
execute();
} else if (prop == &X ||
prop == &Y) {
setAutoPos(false);
DrawView::execute();
execute();
} else if (prop == &Rotation) {
DrawView::execute();
execute();
}
}
App::DocumentObject::onChanged(prop);
}
////you must override this in derived class
QRectF DrawView::getRect() const
{
QRectF result(0,0,1,1);
return result;
}
void DrawView::onDocumentRestored()
{
// Rebuild the view
@@ -182,6 +176,29 @@ bool DrawView::isInClip()
return false;
}
double DrawView::autoScale(double w, double h) const
{
double fudgeFactor = 0.90;
QRectF viewBox = getRect();
double xScale = w/viewBox.width();
double yScale = h/viewBox.height();
//find a standard scale that's close? 1:2, 1:10, 1:100...?
double newScale = fudgeFactor * std::min(xScale,yScale);
return newScale;
}
//!check if View fits on Page
bool DrawView::checkFit(TechDraw::DrawPage* p) const
{
bool result = true;
QRectF viewBox = getRect();
if ( (viewBox.width() > p->getPageWidth()) ||
(viewBox.height() > p->getPageHeight()) ) {
result = false;
}
return result;
}
PyObject *DrawView::getPyObject(void)
{
if (PythonObject.is(Py::_None())) {