class SlideshowFrame(object):
def __init__(self, win, rect, filename, metadata):
self.win = win
self.rect = rect
self.filename = filename
self.metadata = metadata
if self.metadata:
self.line1 = self.metadata['Name']
self.line2 = "%s Mission" % (self.metadata['Mission'])
self.line3 = "%s" % (self.metadata['Time'])
else:
self.line1 = ""
self.line2 = ""
self.line3 = ""
self.image = QGraphicsPixmapItem()
self.win.scene.addItem(self.image)
self.image.setTransformationMode(Qt.SmoothTransformation)
self.use_two_lines = True
self.fontsize1 = 32
self.fontsize2 = 26
self.fontsize3 = 24
self.font1 = QFont('Times New Roman', self.fontsize1)
self.font2 = QFont('Times New Roman', self.fontsize2)
self.font3 = QFont('Times New Roman', self.fontsize3)
self.title1 = self.win.scene.addText(self.line1, self.font1)
self.title1.setDefaultTextColor(Qt.white)
self.title1.setVisible(False)
self.title2 = self.win.scene.addText(self.line2, self.font2)
self.title2.setDefaultTextColor(Qt.white)
self.title2.setVisible(False)
self.title3 = self.win.scene.addText(self.line3, self.font3)
self.title3.setDefaultTextColor(Qt.white)
self.title3.setVisible(False)
self.reservedHeight = 128
self.padding = 20
self.hide()
def move(self, x, y):
self.rect = QRectF(x, y, self.rect.width(), self.rect.height())
def __rotate(self, metadata, origImgSize):
# Qt only handles orientation properly from v5.5
try:
# try directly to get the tag, because sometimes get_tags() returns
# tags that don't actually are in the file
rot = metadata['Exif.Image.Orientation']
except KeyError:
# guess :-/
rot = '1'
# see http://www.daveperrett.com/images/articles/2012-07-28-exif-orientation-handling-is-a-ghetto/EXIF_Orientations.jpg
# we have to 'undo' the rotations, so the numbers are negative
if rot == '1':
rotate = 0
imgSize = origImgSize
if rot == '8':
rotate = -90
imgSize = QSize(origImgSize.height(), origImgSize.width())
if rot == '3':
rotate = -180
imgSize = origImgSize
if rot == '6':
rotate = -270
imgSize = QSize(origImgSize.height(), origImgSize.width())
# undo the last rotation and apply the new one
self.image.setRotation(rotate)
return imgSize
def __zoomFit(self, imgSize):
reservedHeight = self.reservedHeight + self.padding * 2
hZoom = self.rect.width() / imgSize.width()
vZoom = (self.rect.height() - reservedHeight) / imgSize.height()
scale = min(hZoom, vZoom)
self.image.setScale(scale)
width = imgSize.width() * scale
height = imgSize.height() * scale
self.image.setPos(
(self.rect.width() - width) / 2 + self.rect.x(),
(self.rect.height() - reservedHeight - height) / 2 + self.rect.y())
def layoutText(self):
reservedHeight = self.reservedHeight + self.padding
vertical_spacing = (self.reservedHeight -
self.title1.boundingRect().height() -
self.title2.boundingRect().height() -
self.title3.boundingRect().height()) / 3
x = (self.rect.width() - self.title1.boundingRect().width()) / 2
y = self.rect.height() - reservedHeight + vertical_spacing
self.title1.setPos(x + self.rect.x(), y + self.rect.y())
x = (self.rect.width() - self.title2.boundingRect().width()) / 2
y = self.rect.height(
) - reservedHeight + vertical_spacing * 2 + self.title1.boundingRect(
).height()
self.title2.setPos(x + self.rect.x(), y + self.rect.y())
x = (self.rect.width() - self.title3.boundingRect().width()) / 2
y = self.rect.height(
) - reservedHeight + vertical_spacing * 3 + self.title1.boundingRect(
).height() + self.title2.boundingRect().height()
self.title3.setPos(x + self.rect.x(), y + self.rect.y())
def show(self):
img = QPixmap(self.filename)
try:
metadata = GExiv2.Metadata(self.filename)
except GLib.Error as e:
print(repr(e))
return
self.image.setPixmap(img)
self.image.setScale(1.0)
self.image.setRotation(0)
imgSize = self.__rotate(metadata, img.size())
self.__zoomFit(imgSize)
self.layoutText()
self.title1.setVisible(True)
self.title2.setVisible(True)
self.title3.setVisible(True)
self.image.setVisible(True)
def hide(self):
self.title1.setVisible(False)
self.title2.setVisible(False)
self.title3.setVisible(False)
self.image.setVisible(False)
self.image.setPixmap(QPixmap())
def showImage(self, file, md):
self.metadata = md
try:
metadata = GExiv2.Metadata(file)
except GLib.Error as e:
print(repr(e))
return
img = QPixmap(file)
self.image.setPixmap(img)
self.image.setScale(1.0)
self.image.setRotation(0)
imgSize = self.__rotate(metadata, img.size())
self.__zoomFit(imgSize)
self.layoutMetadata()
