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from PyQt4 import QtCore, QtGui
from colors import Colors
from demoitem import DemoItem
class HeadingItem(DemoItem):
def __init__(self, text, scene=None, parent=None):
super(HeadingItem, self).__init__(scene, parent)
self.text = text
self.noSubPixeling = True
def createImage(self, matrix):
sx = min(matrix.m11(), matrix.m22())
sy = max(matrix.m22(), sx)
fm = QtGui.QFontMetrics(Colors.headingFont())
w = fm.width(self.text) + 1
h = fm.height()
xShadow = 3.0
yShadow = 3.0
image = QtGui.QImage(int((w + xShadow) * sx), int((h + yShadow) * sy),
QtGui.QImage.Format_ARGB32_Premultiplied)
image.fill(QtGui.QColor(0, 0, 0, 0).rgba())
painter = QtGui.QPainter(image)
painter.setFont(Colors.headingFont())
painter.scale(sx, sy)
# Draw shadow.
brush_shadow = QtGui.QLinearGradient(xShadow, yShadow, w, yShadow)
brush_shadow.setSpread(QtGui.QLinearGradient.PadSpread)
if Colors.useEightBitPalette:
brush_shadow.setColorAt(0.0, QtGui.QColor(0, 0, 0))
else:
brush_shadow.setColorAt(0.0, QtGui.QColor(0, 0, 0, 100))
pen_shadow = QtGui.QPen()
pen_shadow.setBrush(brush_shadow)
painter.setPen(pen_shadow)
painter.drawText(int(xShadow), int(yShadow), int(w), int(h),
QtCore.Qt.AlignLeft, self.text)
# Draw text.
brush_text = QtGui.QLinearGradient(0, 0, w, w)
brush_text.setSpread(QtGui.QLinearGradient.PadSpread)
brush_text.setColorAt(0.0, QtGui.QColor(255, 255, 255))
brush_text.setColorAt(0.2, QtGui.QColor(255, 255, 255))
brush_text.setColorAt(0.5, QtGui.QColor(190, 190, 190))
pen_text = QtGui.QPen()
pen_text.setBrush(brush_text)
painter.setPen(pen_text)
painter.drawText(0, 0, int(w), int(h), QtCore.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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