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############################################################################
##
## Copyright (C) 2004-2005 Trolltech AS. All rights reserved.
##
## This file is part of the example classes of the Qt Toolkit.
##
## This file may be used under the terms of the GNU General Public
## License version 2.0 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 GNU
## General Public Licensing requirements will be met:
## http://www.trolltech.com/products/qt/opensource.html
##
## If you are unsure which license is appropriate for your use, please
## review the following information:
## http://www.trolltech.com/products/qt/licensing.html or contact the
## sales department at sales@trolltech.com.
##
## This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
## WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
##
############################################################################
from math import ceil
from PyQt4 import QtCore, QtGui, QtNetwork, QtXml
class DisplayShape:
def __init__(self, position, maxSize):
self.metadata = {}
self.image = QtGui.QImage()
self.pos = position
self.targetPos = QtCore.QPointF()
self.maxSize = maxSize
self.interactive = False
def animate(self):
if not self.targetPos.isNull():
displacement = QtCore.QLineF(self.pos, self.targetPos)
newPosition = displacement.pointAt(0.25)
if displacement.length() <= 1.0:
self.pos = self.targetPos
self.targetPos = QtCore.QPointF()
else:
self.pos = newPosition
return True
return False
def isInteractive(self):
return self.interactive
def paint(self, painter):
painter.save()
painter.drawImage(self.pos, self.image)
painter.restore()
def position(self):
return self.pos
def rect(self):
return QtCore.QRectF(self.pos, self.image.size())
def setInteractive(self, enable):
self.interactive = enable
def setPosition(self, position):
self.pos = position
def setSize(self, size):
self.maxSize = size
def setTarget(self, position):
self.targetPos = position
def size(self):
return self.maxSize
def target(self):
return self.targetPos
class PanelShape(DisplayShape):
def __init__(self, path, normal, highlighted, pen, position, maxSize):
DisplayShape.__init__(self, position, maxSize)
self.normalBrush = normal
self.path = path
self.highlightedBrush = highlighted
self.pen = pen
self.brush = QtGui.QBrush(self.normalBrush)
def animate(self):
updated = False
if not "destroy" in self.metadata:
if "fade" in self.metadata:
penColor = self.pen.color()
brushColor = self.brush.color()
penAlpha = penColor.alpha()
brushAlpha = brushColor.alpha()
fadeMinimum = int(self.metadata.get("fade minimum", "0"))
if penAlpha != fadeMinimum or brushAlpha != fadeMinimum or self.metadata["fade"] > 0:
penAlpha = max(fadeMinimum, min(penAlpha + self.metadata["fade"], 255))
brushAlpha = max(fadeMinimum, min(brushAlpha + self.metadata["fade"], 255))
penColor.setAlpha(penAlpha)
brushColor.setAlpha(brushAlpha)
self.pen.setColor(penColor)
self.brush.setColor(brushColor)
if penAlpha == 0 and brushAlpha == 0:
self.metadata["destroy"] = True
del self.metadata["fade"]
elif penAlpha == 255 and brushAlpha == 255:
del self.metadata["fade"]
updated = True
elif "highlight" in self.metadata:
scale = float(self.metadata.get("highlight scale", "0.0"))
color = QtGui.QColor(self.brush.color())
if self.metadata["highlight"]:
scale = max(0.0, min(scale + 0.5, 1.0))
else:
scale = max(0.0, min(scale - 0.2, 1.0))
if scale == 0.0:
self.brush = QtGui.QBrush(self.normalBrush)
del self.metadata["highlight"]
try:
del self.metadata["highlight scale"]
except KeyError:
pass
updated = True
elif scale != float(self.metadata.get("highlight scale", "0.0")):
self.metadata["highlight scale"] = scale
if scale == 1.0:
self.brush = QtGui.QBrush(self.highlightedBrush)
else:
normal = self.normalBrush.color()
highlighted = self.highlightedBrush.color()
color.setRedF((1.0 - scale) * normal.redF() + scale * highlighted.redF())
color.setGreenF((1.0 - scale) * normal.greenF() + scale * highlighted.greenF())
color.setBlueF((1.0 - scale) * normal.blueF() + scale * highlighted.blueF())
self.brush.setColor(color)
updated = True
return (DisplayShape.animate(self) or updated)
def paint(self, painter):
painter.save()
painter.setRenderHint(QtGui.QPainter.Antialiasing)
painter.setBrush(self.brush)
painter.setPen(self.pen)
painter.translate(self.pos)
painter.drawPath(self.path)
painter.restore()
def rect(self):
return QtCore.QRectF(self.pos + self.path.boundingRect().topLeft(),
self.path.boundingRect().size())
class TitleShape(DisplayShape):
def __init__(self, text, font, pen, position, maxSize, alignment=QtCore.Qt.AlignVCenter|QtCore.Qt.AlignLeft):
DisplayShape.__init__(self, position, maxSize)
self.font = QtGui.QFont(font)
self.text = QtCore.QString(text)
self.pen = pen
self.alignment = alignment
fm = QtGui.QFontMetricsF(self.font)
self.textRect = fm.boundingRect(QtCore.QRectF(QtCore.QPointF(0, 0), maxSize), self.alignment, self.text)
textWidth = max(fm.width(self.text), self.textRect.width())
textHeight = max(fm.height(), self.textRect.height())
scale = min(maxSize.width() / textWidth, maxSize.height() / textHeight)
self.font.setPointSizeF(self.font.pointSizeF() * scale)
fm = QtGui.QFontMetricsF(self.font)
self.textRect = fm.boundingRect(QtCore.QRectF(QtCore.QPointF(0, 0), maxSize), self.alignment, self.text)
self.baselineStart = QtCore.QPointF(self.textRect.left(), self.textRect.bottom() - fm.descent())
def animate(self):
updated = False
if "destroy" not in self.metadata:
if "fade" in self.metadata:
penColor = self.pen.color()
penAlpha = penColor.alpha()
penAlpha = max(int(self.metadata.get("fade minimum", "0")), min(penAlpha + self.metadata["fade"], 255))
penColor.setAlpha(penAlpha)
self.pen.setColor(penColor)
if penAlpha == 0:
self.metadata["destroy"] = True
del self.metadata["fade"]
elif penAlpha == 255:
del self.metadata["fade"]
updated = True
return (DisplayShape.animate(self) or updated)
def paint(self, painter):
rect = QtCore.QRectF(self.textRect)
rect.translate(self.pos)
painter.save()
painter.setRenderHint(QtGui.QPainter.TextAntialiasing)
painter.setPen(self.pen)
painter.setFont(self.font)
painter.drawText(self.pos + self.baselineStart, self.text)
painter.restore()
def rect(self):
rect = QtCore.QRectF(self.textRect)
return rect.translated(self.pos)
class ImageShape(DisplayShape):
def __init__(self, original, position, maxSize, alpha=0, alignment=QtCore.Qt.AlignCenter):
DisplayShape.__init__(self, position, maxSize)
self.alpha = alpha
self.alignment = alignment
self.source = original.convertToFormat(QtGui.QImage.Format_ARGB32_Premultiplied)
scale = min(min(self.maxSize.width() / self.source.width(), self.maxSize.height() / self.source.height()), 1.0)
self.source = self.source.scaled(int(ceil(self.source.width() * scale)),
int(ceil(self.source.height() * scale)),
QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
self.image = QtGui.QImage(self.source.size(), QtGui.QImage.Format_ARGB32_Premultiplied)
self.offset = QtCore.QPointF(0.0, 0.0)
if self.alignment & QtCore.Qt.AlignHCenter:
self.offset.setX((self.maxSize.width() - self.image.width()) / 2)
elif self.alignment & QtCore.Qt.AlignRight:
self.offset.setX(self.maxSize.width() - self.image.width())
if alignment & QtCore.Qt.AlignVCenter:
self.offset.setY((self.maxSize.height() - self.image.height()) / 2)
elif self.alignment & QtCore.Qt.AlignBottom:
self.offset.setY(self.maxSize.height() - self.image.height())
self.redraw()
def redraw(self):
self.image.fill(QtGui.qRgba(self.alpha, self.alpha, self.alpha, self.alpha))
painter = QtGui.QPainter()
painter.begin(self.image)
painter.setCompositionMode(QtGui.QPainter.CompositionMode_SourceIn)
painter.drawImage(0, 0, self.source)
painter.end()
def paint(self, painter):
painter.drawImage(self.pos + self.offset, self.image)
def rect(self):
return QtCore.QRectF(self.pos, self.maxSize)
def animate(self):
updated = False
if "destroy" not in self.metadata:
if "fade" in self.metadata:
self.alpha = max(int(self.metadata.get("fade minimum", "0")), min(self.alpha + self.metadata["fade"], 255))
self.redraw()
if self.alpha == 0:
self.metadata["destroy"] = True
del self.metadata["fade"]
elif self.alpha == 255:
del self.metadata["fade"]
updated = True
return (DisplayShape.animate(self) or updated)
class DocumentShape(DisplayShape):
def __init__(self, text, font, position, maxSize, alpha=0):
DisplayShape.__init__(self, position, maxSize)
self.alpha = alpha
self.textDocument = QtGui.QTextDocument()
self.textDocument.setHtml(text)
self.textDocument.setDefaultFont(font)
self.textDocument.setPageSize(maxSize)
documentSize = self.textDocument.documentLayout().documentSize()
self.setSize(QtCore.QSizeF(self.maxSize.width(), min(self.maxSize.height(), documentSize.height())))
self.source = QtGui.QImage(int(ceil(documentSize.width())),
int(ceil(documentSize.height())),
QtGui.QImage.Format_ARGB32_Premultiplied)
self.source.fill(QtGui.qRgba(255, 255, 255, 255))
context = QtGui.QAbstractTextDocumentLayout.PaintContext()
self.textDocument.documentLayout().setPaintDevice(self.source)
painter = QtGui.QPainter()
painter.begin(self.source)
painter.setRenderHint(QtGui.QPainter.TextAntialiasing)
painter.setRenderHint(QtGui.QPainter.Antialiasing)
self.textDocument.documentLayout().draw(painter, context)
painter.end()
self.source = self.source.scaled(int(ceil(self.maxSize.width())),
int(ceil(self.maxSize.height())),
QtCore.Qt.KeepAspectRatio,
QtCore.Qt.SmoothTransformation)
self.image = QtGui.QImage(self.source.size(), self.source.format())
self.redraw()
def animate(self):
updated = False
if "destroy" not in self.metadata:
if "fade" in self.metadata:
self.alpha = max(int(self.metadata.get("fade minimum", "0")), min(self.alpha + self.metadata["fade"], 255))
self.redraw()
if self.alpha == 0:
self.metadata["destroy"] = True
del self.metadata["fade"]
elif self.alpha == 255:
del self.metadata["fade"]
updated = True
return (DisplayShape.animate(self) or updated)
def redraw(self):
self.image.fill(QtGui.qRgba(self.alpha, self.alpha, self.alpha, self.alpha))
painter = QtGui.QPainter()
painter.begin(self.image)
painter.setCompositionMode(QtGui.QPainter.CompositionMode_SourceIn)
painter.drawImage(0, 0, self.source)
painter.end()
def paint(self, painter):
painter.drawImage(self.pos, self.image)
def rect(self):
return QtCore.QRectF(self.pos, self.maxSize)
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