def update_preview(self):
if self.pages is not None:
pdf_file = self.pages[self.current_page - 1]
pdf_file.seek(0)
document = Document(stream=pdf_file, filetype="PDF")
image = QPixmap()
page = document.loadPage(0)
container_size = self.preview_box.parent().size()
normalized_zoom_factor = min(
page.rect.height / container_size.height(),
page.rect.width / container_size.width(),
)
scale_mat = Matrix(normalized_zoom_factor, normalized_zoom_factor)
image.loadFromData(page.getPixmap(matrix=scale_mat).getPNGData())
image_size = container_size * self.zoom_factor
self.preview_box.setPixmap(
image.scaled(image_size, Qt.KeepAspectRatio))
self.preview_box.resize(image_size)
else:
self.preview_box.setTextFormat(Qt.RichText)
self.preview_box.setStyleSheet("QLabel { color : darkgray; }")
self.preview_box.setText(
f'<center><img src="{appctxt.get_resource("logo.png")}") /><br />Wähle auf der rechten Seite<br />eine Datei und ein Papierformat<br />aus um die Vorschau anzuzeigen</center>'
)
self.preview_box.resize(QSize(200, 200))
def proper_display(window: FullscreenWindow):
mat = Matrix(window.staticZoom, window.staticZoom)
page_pix = return_page(window.file, window.currentPage).getPixmap(
matrix=mat, alpha=False)
fmt = QImage.Format_RGBA8888 if page_pix.alpha else QImage.Format_RGB888
qt_img = QImage(page_pix.samples, page_pix.width, page_pix.height, page_pix.stride, fmt)
if window.invertImage:
qt_img.invertPixels(QImage.InvertRgba)
pixmap = QPixmap(QPixmap.fromImage(qt_img))
window.mainLabel.setPixmap(pixmap)
def zoom_out(self, window: FullscreenWindow):
if self.currentMatrixZoom > self.minMatrixZoom:
self.currentMatrixZoom -= 0.1
page_pix = return_page(window.file, window.currentPage).getPixmap(
matrix=Matrix(self.currentMatrixZoom, self.currentMatrixZoom))
fmt = QImage.Format_RGBA8888 if page_pix.alpha else QImage.Format_RGB888
qt_img = QImage(page_pix.samples, page_pix.width, page_pix.height, page_pix.stride, fmt)
if window.invertImage:
qt_img.invertPixels(QImage.InvertRgba)
pixmap = QPixmap(QPixmap.fromImage(qt_img))
window.mainLabel.setPixmap(pixmap)
window.staticZoom = self.currentMatrixZoom
def proper_display(window: ReaderWindowInteractivity):
mat = Matrix(window.static_zoom, window.static_zoom)
page_pix = return_page(window.file,
window.current_page).getPixmap(matrix=mat,
alpha=False)
fmt = QImage.Format_RGBA8888 if page_pix.alpha else QImage.Format_RGB888
qt_img = QImage(page_pix.samples, page_pix.width, page_pix.height,
page_pix.stride, fmt)
if window.invert_image:
qt_img.invertPixels(QImage.InvertRgba)
pixmap = QPixmap(QPixmap.fromImage(qt_img))
window.content.setPixmap(pixmap)
def zoom_out(self, window: ReaderWindowInteractivity):
if self.currentMatrixZoom > self.minMatrixZoom:
self.currentMatrixZoom -= 0.25
page_pix = return_page(window.file, window.current_page).getPixmap(
matrix=Matrix(self.currentMatrixZoom, self.currentMatrixZoom))
fmt = QImage.Format_RGBA8888 if page_pix.alpha else QImage.Format_RGB888
qt_img = QImage(page_pix.samples, page_pix.width, page_pix.height,
page_pix.stride, fmt)
if window.invert_image:
qt_img.invertPixels(QImage.InvertRgba)
pixmap = QPixmap(QPixmap.fromImage(qt_img))
window.content.setPixmap(pixmap)
window.static_zoom = self.currentMatrixZoom
def Page_Rect_get_Text_odf(doc, name, page_num, rects, hierarchy, output,
style_p):
page = doc[page_num]
words = page.getText("words")
output.text.addElement(P(stylename=style_p, text="_" * 30))
output.text.addElement(P(stylename=style_p, text=f"page {page_num+1}"))
for i in range(rects.shape[0]):
if hierarchy[i, 3] == -1:
output.text.addElement(P(stylename=style_p, text=""))
rect = Rect(rects[i, 0], rects[i, 1], rects[i, 2], rects[i, 3])
mywords = [w for w in words if Rect(w[:4]) in rect]
mywords.sort(key=itemgetter(3,
0)) # sort by y1, x0 of the word rect
group = groupby(mywords, key=itemgetter(3))
out_text = P(stylename=style_p, text="")
for y1, gwords in group:
out_text.addText(" ".join(w[4]
for w in gwords).replace("\n", " "))
out_text.addText(" ")
output.text.addElement(out_text)
if hierarchy[i, 3] != -1:
output.text.addElement(P(stylename=style_p, text=""))
out_img = P()
#ncc=int(hierarchy[i,3])
ncc = i
clip = Rect(rects[ncc, 0], rects[ncc, 1], rects[ncc, 2], rects[ncc,
3])
pix = page.getPixmap(matrix=Matrix(2, 2), clip=clip)
name_image = f"Pictures/image-{page.number}-{i}.png"
#liste_tampon.append(name_tampon)
#pix.writePNG(name_image)
pix_png = pix.getPNGData()
h = pix.height / pix.xres
w = pix.width / pix.yres
frame = Frame(width=f"{w}in",
height=f"{h}in",
anchortype="paragraph")
href = output.addPicture(name_image,
mediatype="png",
content=pix_png) #
frame.addElement(Image(href=f"./{href}"))
out_img.addElement(frame)
output.text.addElement(out_img)
return output
def Page_Rect_get_Text_odf(doc, page_num, rects, hierarchy, Xrects, output,
style_p, style_i, img_quality, col):
page = doc[page_num]
words = page.getText("words")
output.text.addElement(P(stylename=style_p, text="_" * 60))
if col == 1 or col == 2:
output.text.addElement(
P(stylename=style_p, text=f"page {page_num+1} - column {col}"))
else:
output.text.addElement(P(stylename=style_p, text=f"page {page_num+1}"))
for i in range(rects.shape[0]):
if hierarchy[i, 3] == -1:
rect = Rect(rects[i, 0], rects[i, 1], rects[i, 2], rects[i, 3])
allwords = [w for w in words if Rect(w[:4]) in rect]
# iterate over all rects to exclude
mywords = []
for w in allwords:
exclude = 0
for Xrect in Xrects:
xg = (w[0] + w[2]) / 2
yg = (w[1] + w[3]) / 2
if Rect(Xrect).contains((xg, yg)):
exclude = 1
if exclude == 0:
mywords.append(w)
mywords.sort(key=itemgetter(3,
0)) # sort by y1, x0 of the word rect
group = groupby(mywords, key=itemgetter(3))
output.text.addElement(P(stylename=style_p, text=""))
out_text = P(stylename=style_p, text="")
for y1, gwords in group:
out_text.addText(" ".join(w[4]
for w in gwords).replace("\n", " "))
out_text.addText(" ")
output.text.addElement(out_text)
if hierarchy[i, 3] != -1:
clip = Rect(rects[i, 0], rects[i, 1], rects[i, 2], rects[i, 3])
#taking into account quality
img_qual = img_quality / 50.
pix = page.getPixmap(matrix=Matrix(img_qual, img_qual), clip=clip)
name_image = f"Pictures/image-{page.number}-{col}{i}.png"
pix_png = pix.getPNGData()
h = pix.height / pix.xres
w = pix.width / pix.yres
#if quality is larger than 2 keep the frame the same as if it was 2
h *= 2 / img_qual
w *= 2 / img_qual
#if image is too small (h<20px) it is probably an artifact
#so do not print it
if pix.height * 2 / img_qual > 20:
output.text.addElement(P(stylename=style_p, text=""))
out_img = P()
frame = Frame(stylename=style_i,
width=f"{w}in",
height=f"{h}in",
anchortype="paragraph")
href = output.addPicture(name_image,
mediatype="png",
content=pix_png) #
frame.addElement(Image(href=f"./{href}"))
out_img.addElement(frame)
output.text.addElement(out_img)
return output