LeechCraft  0.6.70-13729-g7046a9d2a7
Modular cross-platform feature rich live environment.
geometry.cpp
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29 
30 #include "geometry.h"
31 #include <QGuiApplication>
32 #include <QRect>
33 #include <QScreen>
34 #include <QSize>
35 #include <QtDebug>
36 
37 namespace LC::Util
38 {
39  QPoint FitRectScreen (QPoint pos, const QSize& size, FitFlags flags, const QPoint& shiftAdd)
40  {
41  return FitRect (pos, size, ScreenGeometry (pos), flags, shiftAdd);
42  }
43 
44  QPoint FitRect (QPoint pos, const QSize& size, const QRect& geometry,
45  FitFlags flags, const QPoint& shiftAdd)
46  {
47  int xDiff = std::max (0, pos.x () + size.width () - (geometry.width () + geometry.x ()));
48  if (!xDiff)
49  xDiff = std::min (0, pos.x () - geometry.x ());
50  int yDiff = std::max (0, pos.y () + size.height () - (geometry.height () + geometry.y ()));
51  if (!yDiff)
52  yDiff = std::min (0, pos.y () - geometry.y ());
53 
54  if (flags & FitFlag::NoOverlap)
55  {
56  auto overlapFixer = [] (int& diff, int dim)
57  {
58  if (diff > 0)
59  diff = dim > diff ? dim : diff;
60  };
61 
62  if (QRect (pos - QPoint (xDiff, yDiff), size).contains (pos) && yDiff < size.height ())
63  overlapFixer (yDiff, size.height ());
64  if (QRect (pos - QPoint (xDiff, yDiff), size).contains (pos) && xDiff < size.width ())
65  overlapFixer (xDiff, size.width ());
66  }
67 
68  if (xDiff)
69  pos.rx () -= xDiff + shiftAdd.x ();
70  if (yDiff)
71  pos.ry () -= yDiff + shiftAdd.y ();
72 
73  return pos;
74  }
75 
76  QScreen* GetScreenWithFallback (const QPoint& p)
77  {
78  if (auto screen = QGuiApplication::screenAt (p))
79  return screen;
80 
81  qWarning () << Q_FUNC_INFO
82  << "unknown screen for point"
83  << p;
84  return QGuiApplication::primaryScreen ();
85  }
86 
87  QRect AvailableGeometry (const QPoint& p)
88  {
89  return GetScreenWithFallback (p)->availableGeometry ();
90  }
91 
92  QRect ScreenGeometry (const QPoint& p)
93  {
94  return GetScreenWithFallback (p)->geometry ();
95  }
96 }
QPoint FitRect(QPoint pos, const QSize &size, const QRect &geometry, FitFlags flags, const QPoint &shiftAdd)
Tries to fit a rectangle (like a dialog or popup) into geometry.
Definition: geometry.cpp:44
QRect AvailableGeometry(const QPoint &p)
Definition: geometry.cpp:87
constexpr detail::AggregateType< detail::AggregateFunction::Max, Ptr > max
Definition: oral.h:975
QScreen * GetScreenWithFallback(const QPoint &p)
Definition: geometry.cpp:76
QPoint FitRectScreen(QPoint pos, const QSize &size, FitFlags flags, const QPoint &shiftAdd)
Tries to fit a rectangle (like a dialog or popup) into screen.
Definition: geometry.cpp:39
QRect ScreenGeometry(const QPoint &p)
Definition: geometry.cpp:92
constexpr detail::AggregateType< detail::AggregateFunction::Min, Ptr > min
Definition: oral.h:972