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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 QPointF, QRect, QRectF, QSize, Qt
from PyQt5.QtGui import (QColor, QImage, QLinearGradient, QPainter,
QPainterPath, QPen)
from colors import Colors
from demoitem import DemoItem
from demoitemanimation import DemoItemAnimation
from demotextitem import DemoTextItem
from scanitem import ScanItem
class ButtonBackground(DemoItem):
def __init__(self, type, highlighted, pressed, logicalSize, parent):
super(ButtonBackground, self).__init__(parent)
self.type = type
self.highlighted = highlighted
self.pressed = pressed
self.logicalSize = logicalSize
self.useSharedImage('%s%d%d%d' % (__file__, type, highlighted, pressed))
def createImage(self, transform):
if self.type in (TextButton.SIDEBAR, TextButton.PANEL):
return self.createRoundButtonBackground(transform)
else:
return self.createArrowBackground(transform)
def createRoundButtonBackground(self, transform):
scaledRect = transform.mapRect(QRect(0, 0,
self.logicalSize.width(), self.logicalSize.height()))
image = QImage(scaledRect.width(), scaledRect.height(),
QImage.Format_ARGB32_Premultiplied)
image.fill(QColor(0, 0, 0, 0).rgba())
painter = QPainter(image)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(Qt.NoPen)
if Colors.useEightBitPalette:
painter.setPen(QColor(120, 120, 120))
if self.pressed:
painter.setBrush(QColor(60, 60, 60))
elif self.highlighted:
painter.setBrush(QColor(100, 100, 100))
else:
painter.setBrush(QColor(80, 80, 80))
else:
outlinebrush = QLinearGradient(0, 0, 0, scaledRect.height())
brush = QLinearGradient(0, 0, 0, scaledRect.height())
brush.setSpread(QLinearGradient.PadSpread)
highlight = QColor(255, 255, 255, 70)
shadow = QColor(0, 0, 0, 70)
sunken = QColor(220, 220, 220, 30)
if self.type == TextButton.PANEL:
normal1 = QColor(200, 170, 160, 50)
normal2 = QColor(50, 10, 0, 50)
else:
normal1 = QColor(255, 255, 245, 60)
normal2 = QColor(255, 255, 235, 10)
if self.pressed:
outlinebrush.setColorAt(0, shadow)
outlinebrush.setColorAt(1, highlight)
brush.setColorAt(0, sunken)
painter.setPen(Qt.NoPen)
else:
outlinebrush.setColorAt(1, shadow)
outlinebrush.setColorAt(0, highlight)
brush.setColorAt(0, normal1)
if not self.highlighted:
brush.setColorAt(1, normal2)
painter.setPen(QPen(outlinebrush, 1))
painter.setBrush(brush)
if self.type == TextButton.PANEL:
painter.drawRect(0, 0, scaledRect.width(), scaledRect.height())
else:
painter.drawRoundedRect(0, 0, scaledRect.width(),
scaledRect.height(), 10, 90, Qt.RelativeSize)
return image
def createArrowBackground(self, transform):
scaledRect = transform.mapRect(QRect(0, 0,
self.logicalSize.width(), self.logicalSize.height()))
image = QImage(scaledRect.width(), scaledRect.height(),
QImage.Format_ARGB32_Premultiplied)
image.fill(QColor(0, 0, 0, 0).rgba())
painter = QPainter(image)
painter.setRenderHint(QPainter.SmoothPixmapTransform)
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(Qt.NoPen)
if Colors.useEightBitPalette:
painter.setPen(QColor(120, 120, 120))
if self.pressed:
painter.setBrush(QColor(60, 60, 60))
elif self.highlighted:
painter.setBrush(QColor(100, 100, 100))
else:
painter.setBrush(QColor(80, 80, 80))
else:
outlinebrush = QLinearGradient(0, 0, 0, scaledRect.height())
brush = QLinearGradient(0, 0, 0, scaledRect.height())
brush.setSpread(QLinearGradient.PadSpread)
highlight = QColor(255, 255, 255, 70)
shadow = QColor(0, 0, 0, 70)
sunken = QColor(220, 220, 220, 30)
normal1 = QColor(200, 170, 160, 50)
normal2 = QColor(50, 10, 0, 50)
if self.pressed:
outlinebrush.setColorAt(0, shadow)
outlinebrush.setColorAt(1, highlight)
brush.setColorAt(0, sunken)
painter.setPen(Qt.NoPen)
else:
outlinebrush.setColorAt(1, shadow)
outlinebrush.setColorAt(0, highlight)
brush.setColorAt(0, normal1)
if not self.highlighted:
brush.setColorAt(1, normal2)
painter.setPen(QPen(outlinebrush, 1))
painter.setBrush(brush);
painter.drawRect(0, 0, scaledRect.width(), scaledRect.height())
xOff = scaledRect.width() / 2
yOff = scaledRect.height() / 2
sizex = 3.0 * transform.m11()
sizey = 1.5 * transform.m22()
if self.type == TextButton.UP:
sizey *= -1
path = QPainterPath()
path.moveTo(xOff, yOff + (5 * sizey))
path.lineTo(xOff - (4 * sizex), yOff - (3 * sizey))
path.lineTo(xOff + (4 * sizex), yOff - (3 * sizey))
path.lineTo(xOff, yOff + (5 * sizey))
painter.drawPath(path)
return image
class TextButton(DemoItem):
BUTTON_WIDTH = 180
BUTTON_HEIGHT = 19
LEFT, RIGHT = range(2)
SIDEBAR, PANEL, UP, DOWN = range(4)
ON, OFF, HIGHLIGHT, DISABLED = range(4)
def __init__(self, text, align=LEFT, userCode=0, parent=None, type=SIDEBAR):
super(TextButton, self).__init__(parent)
# Prevent a circular import.
from menumanager import MenuManager
self._menu_manager = MenuManager.instance()
self.menuString = text
self.buttonLabel = text
self.alignment = align
self.buttonType = type
self.userCode = userCode
self.scanAnim = None
self.bgOn = None
self.bgOff = None
self.bgHighlight = None
self.bgDisabled = None
self.state = TextButton.OFF
self.setAcceptHoverEvents(True)
self.setCursor(Qt.PointingHandCursor)
# Calculate the button size.
if type in (TextButton.SIDEBAR, TextButton.PANEL):
self.logicalSize = QSize(TextButton.BUTTON_WIDTH, TextButton.BUTTON_HEIGHT)
else:
self.logicalSize = QSize(int((TextButton.BUTTON_WIDTH / 2.0) - 5), int(TextButton.BUTTON_HEIGHT * 1.5))
self._prepared = False
def setMenuString(self, menu):
self.menuString = menu
def prepare(self):
if not self._prepared:
self.setupHoverText()
self.setupScanItem()
self.setupButtonBg()
self._prepared = True
def boundingRect(self):
return QRectF(0, 0, self.logicalSize.width(),
self.logicalSize.height())
def setupHoverText(self):
if not self.buttonLabel:
return
textItem = DemoTextItem(self.buttonLabel, Colors.buttonFont(),
Colors.buttonText, -1, self)
textItem.setZValue(self.zValue() + 2)
textItem.setPos(16, 0)
def setupScanItem(self):
if Colors.useButtonBalls:
scanItem = ScanItem(self)
scanItem.setZValue(self.zValue() + 1)
self.scanAnim = DemoItemAnimation(scanItem)
x = 1.0
y = 1.5
stop = TextButton.BUTTON_WIDTH - scanItem.boundingRect().width() - x
if self.alignment == TextButton.LEFT:
self.scanAnim.setDuration(2500)
self.scanAnim.setKeyValueAt(0.0, QPointF(x, y))
self.scanAnim.setKeyValueAt(0.5, QPointF(x, y))
self.scanAnim.setKeyValueAt(0.7, QPointF(stop, y))
self.scanAnim.setKeyValueAt(1.0, QPointF(x, y))
scanItem.setPos(QPointF(x, y))
else:
self.scanAnim.setKeyValueAt(0.0, QPointF(stop, y))
self.scanAnim.setKeyValueAt(0.5, QPointF(x, y))
self.scanAnim.setKeyValueAt(1.0, QPointF(stop, y))
scanItem.setPos(QPointF(stop, y))
def setState(self, state):
self.state = state
self.bgOn.setRecursiveVisible(state == TextButton.ON)
self.bgOff.setRecursiveVisible(state == TextButton.OFF)
self.bgHighlight.setRecursiveVisible(state == TextButton.HIGHLIGHT)
self.bgDisabled.setRecursiveVisible(state == TextButton.DISABLED)
if state == TextButton.DISABLED:
self.setCursor(Qt.ArrowCursor)
else:
self.setCursor(Qt.PointingHandCursor)
def setupButtonBg(self):
self.bgOn = ButtonBackground(self.buttonType, True, True,
self.logicalSize, self)
self.bgOff = ButtonBackground(self.buttonType, False, False,
self.logicalSize, self)
self.bgHighlight = ButtonBackground(self.buttonType, True, False,
self.logicalSize, self)
self.bgDisabled = ButtonBackground(self.buttonType, True, True,
self.logicalSize, self)
self.setState(TextButton.OFF)
def hoverEnterEvent(self, event):
if not self.isEnabled() or self.state == TextButton.DISABLED:
return
if self.state == TextButton.OFF:
self.setState(TextButton.HIGHLIGHT)
if Colors.noAnimations and Colors.useButtonBalls:
# Wait a bit in the beginning to enhance the effect. We have
# to do this here so that the adaption can be dynamic.
self.scanAnim.setDuration(1000)
self.scanAnim.setKeyValueAt(0.2, self.scanAnim.posAt(0))
if (self._menu_manager.window.fpsMedian > 10 or Colors.noAdapt or
Colors.noTimerUpdate):
if Colors.useButtonBalls:
self.scanAnim.play(True, True)
def hoverLeaveEvent(self, event):
if self.state == TextButton.DISABLED:
return
self.setState(TextButton.OFF)
if Colors.noAnimations and Colors.useButtonBalls:
self.scanAnim.stop()
def mousePressEvent(self, event):
if self.state == TextButton.DISABLED:
return
if self.state == TextButton.HIGHLIGHT or self.state == TextButton.OFF:
self.setState(TextButton.ON)
def mouseReleaseEvent(self, event):
if self.state == TextButton.ON:
self.setState(TextButton.OFF)
if self.isEnabled() and self.boundingRect().contains(event.pos()):
self._menu_manager.itemSelected(self.userCode, self.menuString)
def animationStarted(self, _):
if self.state == TextButton.DISABLED:
return
self.setState(TextButton.OFF)
|
