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Qt5Agg HiDPI support #7507

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Merged
merged 6 commits into from
Jan 2, 2017
Merged

Qt5Agg HiDPI support #7507

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5400888
Initial HiDPI support for qt5agg backend
piannucci May 9, 2016
e5fab1c
Pass HighDPI info from Qt5 to underlying Agg figure.
QuLogic Nov 24, 2016
b122809
Scale Qt5 rubberband by DPI ratio.
QuLogic Nov 24, 2016
4d4b84c
Fix blitting with HighDPI Qt5.
QuLogic Nov 24, 2016
d1d2c66
Fix backwards compatibility with Qt4.
QuLogic Nov 24, 2016
001eaf9
ENH: make Figure.set_size_inches dpi ratio aware
tacaswell Jan 2, 2017
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Pass HighDPI info from Qt5 to underlying Agg figure.
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@QuLogic
QuLogic committed Dec 1, 2016
commit e5fab1c9cee67eea3c0a260bde0a0bdce82a3b8f
7 changes: 6 additions & 1 deletion lib/matplotlib/backends/backend_qt5.py
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Original file line number Diff line number Diff line change
Expand Up @@ -243,6 +243,11 @@ def __init__(self, figure):
w, h = self.get_width_height()
self.resize(w, h)

def get_width_height(self):
dpi_ratio = self.devicePixelRatio()
w, h = FigureCanvasBase.get_width_height(self)
return int(w / dpi_ratio), int(h / dpi_ratio)

def enterEvent(self, event):
FigureCanvasBase.enter_notify_event(self, guiEvent=event)

Expand Down Expand Up @@ -320,7 +325,7 @@ def keyReleaseEvent(self, event):
print('key release', key)

def resizeEvent(self, event):
dpi_ratio = getattr(self, '_dpi_ratio', 1)
dpi_ratio = self.devicePixelRatio()
w = event.size().width() * dpi_ratio
h = event.size().height() * dpi_ratio
if DEBUG:
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5 changes: 5 additions & 0 deletions lib/matplotlib/backends/backend_qt5agg.py
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Original file line number Diff line number Diff line change
Expand Up @@ -229,6 +229,11 @@ def __init__(self, figure):
self._drawRect = None
self.blitbox = []
self._dpi_ratio = self.devicePixelRatio()
# We don't want to scale up the figure DPI more than once.
# Note, we don't handle a signal for changing DPI yet.
if not hasattr(self.figure, '_original_dpi'):
self.figure._original_dpi = self.figure.dpi
self.figure.dpi = self._dpi_ratio * self.figure._original_dpi
self.setAttribute(QtCore.Qt.WA_OpaquePaintEvent)


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