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#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:LGPL$
## Commercial Usage
## Licensees holding valid Qt Commercial licenses may use this file in
## accordance with the Qt Commercial License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Nokia.
##
## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
## General Public License version 2.1 as published by the Free Software
## Foundation and appearing in the file LICENSE.LGPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU Lesser General Public License version 2.1 requirements
## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Nokia gives you certain additional
## rights. These rights are described in the Nokia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3.0 as published by the Free Software
## Foundation and appearing in the file LICENSE.GPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU General Public License version 3.0 requirements will be
## met: http://www.gnu.org/copyleft/gpl.html.
##
## If you have questions regarding the use of this file, please contact
## Nokia at qt-info@nokia.com.
## $QT_END_LICENSE$
##
#############################################################################
from PyQt5.QtCore import Qt
from PyQt5.QtGui import (QColor, QFontMetrics, QImage, QLinearGradient,
QPainter, QPen)
from colors import Colors
from demoitem import DemoItem
class HeadingItem(DemoItem):
def __init__(self, text, parent=None):
super(HeadingItem, self).__init__(parent)
self.text = text
self.noSubPixeling = True
def createImage(self, transform):
sx = min(transform.m11(), transform.m22())
sy = max(transform.m22(), sx)
fm = QFontMetrics(Colors.headingFont())
w = fm.width(self.text) + 1
h = fm.height()
xShadow = 3.0
yShadow = 3.0
image = QImage(int((w + xShadow) * sx), int((h + yShadow) * sy),
QImage.Format_ARGB32_Premultiplied)
image.fill(QColor(0, 0, 0, 0).rgba())
painter = QPainter(image)
painter.setFont(Colors.headingFont())
painter.scale(sx, sy)
# Draw shadow.
brush_shadow = QLinearGradient(xShadow, yShadow, w, yShadow)
brush_shadow.setSpread(QLinearGradient.PadSpread)
if Colors.useEightBitPalette:
brush_shadow.setColorAt(0.0, QColor(0, 0, 0))
else:
brush_shadow.setColorAt(0.0, QColor(0, 0, 0, 100))
pen_shadow = QPen()
pen_shadow.setBrush(brush_shadow)
painter.setPen(pen_shadow)
painter.drawText(int(xShadow), int(yShadow), int(w), int(h),
Qt.AlignLeft, self.text)
# Draw text.
brush_text = QLinearGradient(0, 0, w, w)
brush_text.setSpread(QLinearGradient.PadSpread)
brush_text.setColorAt(0.0, QColor(255, 255, 255))
brush_text.setColorAt(0.2, QColor(255, 255, 255))
brush_text.setColorAt(0.5, QColor(190, 190, 190))
pen_text = QPen()
pen_text.setBrush(brush_text)
painter.setPen(pen_text)
painter.drawText(0, 0, int(w), int(h), Qt.AlignLeft, self.text)
return image
def animationStarted(self, id=0):
self.noSubPixeling = False
def animationStopped(self, id=0):
self.noSubPixeling = True
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