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Workaround for Qt being unable to anti-alias rotated text on windows

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Kovid Goyal 2016-09-01 14:20:48 +05:30
parent c868fdd32e
commit 942b4e3a0e
1 changed files with 14 additions and 4 deletions
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18
src/calibre/gui2/splash_screen.py
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@ -5,9 +5,9 @@
from __future__ import (unicode_literals, division, absolute_import, from __future__ import (unicode_literals, division, absolute_import,
print_function) print_function)
from PyQt5.Qt import Qt, QSplashScreen, QIcon, QApplication, QTransform from PyQt5.Qt import Qt, QSplashScreen, QIcon, QApplication, QTransform, QPainterPath, QBrush
from calibre.constants import __appname__ from calibre.constants import __appname__, iswindows
from calibre.utils.monotonic import monotonic from calibre.utils.monotonic import monotonic
class SplashScreen(QSplashScreen): class SplashScreen(QSplashScreen):
@ -24,6 +24,7 @@ class SplashScreen(QSplashScreen):
painter.save() painter.save()
painter.setPen(Qt.black) painter.setPen(Qt.black)
painter.setRenderHint(painter.TextAntialiasing, True) painter.setRenderHint(painter.TextAntialiasing, True)
painter.setRenderHint(painter.Antialiasing, True)
f = painter.font() f = painter.font()
f.setPixelSize(18) f.setPixelSize(18)
painter.setFont(f) painter.setFont(f)
@ -31,7 +32,13 @@ class SplashScreen(QSplashScreen):
t.translate(330, 450) t.translate(330, 450)
painter.setTransform(t) painter.setTransform(t)
painter.rotate(-98) painter.rotate(-98)
painter.drawText(0, 0, self.message()) if iswindows:
# On windows Qt cannot anti-alias rotated text
p = QPainterPath()
p.addText(0, 0, f, self.message())
painter.fillPath(p, QBrush(Qt.black))
else:
painter.drawText(0, 0, self.message())
painter.restore() painter.restore()
def show_message(self, msg): def show_message(self, msg):
@ -51,10 +58,13 @@ class SplashScreen(QSplashScreen):
ev.accept() ev.accept()
QApplication.instance().quit() QApplication.instance().quit()
if __name__ == '__main__': def main():
from calibre.gui2 import Application from calibre.gui2 import Application
app = Application([]) app = Application([])
spl = SplashScreen(develop=True) spl = SplashScreen(develop=True)
spl.show() spl.show()
spl.show_message('Testing the splash screen message...') spl.show_message('Testing the splash screen message...')
app.exec_() app.exec_()
if __name__ == '__main__':
main()