Hello people.
To my HB Tester GUI I just added the facility to save the rendering to
a PNG file (used it for my bug report posted just now).
Again, except for Cibu, I haven't heard from anyone else. I would like
to hear it if anyone is using this little app and/or has found it
useful (or not).
Thanks.
--
Shriramana Sharma ஶ்ரீரமணஶர்மா श्रीरमणशर्मा
#! /usr/bin/env python3
# HB Tester -- a simple GUI to test HB's rendering of a particular string/font combination
# (C) Shriramana Sharma, 2013
# Licence: GPLv3
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class MainWindow(QWidget) :
def __init__(self) :
QWidget.__init__(self)
self.setObjectName("mainWindow")
self.setWindowTitle("HarfBuzz Tester")
self.inputLabel = QLabel("&Input text")
self.inputTextBox = QPlainTextEdit()
self.inputLabel.setBuddy(self.inputTextBox)
self.fontFileLabel = QLabel("Font fi&le")
self.fontFileTextBox = QLineEdit()
self.fontFileLabel.setBuddy(self.fontFileTextBox)
self.fontFileButton = QPushButton("&Find...")
self.fontSizeLabel = QLabel("&Size")
self.fontSizeSpin = QSpinBox()
self.fontSizeSpin.setMinimum(8)
self.fontSizeSpin.setValue(16)
self.fontSizeLabel.setBuddy(self.fontSizeSpin)
self.renderButton = QPushButton("&Render")
self.outputLabel = QLabel()
self.outputLabel.setAlignment(Qt.AlignCenter)
self.saveButton = QPushButton("Save &As...")
self.inputLayout = QHBoxLayout()
self.inputLayout.addWidget(self.inputLabel)
self.inputLayout.addWidget(self.inputTextBox)
self.fontFileLayout = QHBoxLayout()
self.fontFileLayout.addWidget(self.fontFileLabel)
self.fontFileLayout.addWidget(self.fontFileTextBox)
self.fontFileLayout.addWidget(self.fontFileButton)
self.fontFileLayout.addWidget(self.fontSizeLabel)
self.fontFileLayout.addWidget(self.fontSizeSpin)
self.layout = QVBoxLayout()
self.layout.addLayout(self.inputLayout)
self.layout.addLayout(self.fontFileLayout)
self.layout.addWidget(self.renderButton)
self.layout.addWidget(self.outputLabel)
self.layout.addWidget(self.saveButton)
self.setLayout(self.layout)
self.renderedPNGforUser = None
self.userSavedAsFileName = None
QObject.connect ( self.fontFileButton, SIGNAL("clicked()"), self.selectFontFile )
QObject.connect ( self.renderButton, SIGNAL("clicked()"), self.renderText )
QObject.connect ( self.saveButton, SIGNAL("clicked()"), self.saveRenderedPNG )
def selectFontFile(self) :
fontFileName = self.fontFileTextBox.text()
path = fontFileName if QFile.exists(fontFileName) else QDir.homePath()
newFontFileName = QFileDialog.getOpenFileName ( self, "HarfBuzz Tester - Select Font", path, "Fonts (*.ttf *.otf)" )
if newFontFileName != "" : self.fontFileTextBox.setText(newFontFileName)
def renderText(self) :
if self.inputTextBox.toPlainText() == "" :
self.outputLabel.clear() ; return
fontFileName = self.fontFileTextBox.text()
if fontFileName == "" :
QMessageBox.critical ( self, "HarfBuzz Tester - Error", "No font file is specified" )
self.outputLabel.clear() ; return
if not QFile.exists(fontFileName) :
QMessageBox.critical ( self, "HarfBuzz Tester - Error", "The specified font file does not exist" )
self.outputLabel.clear() ; return
if fontFileName[-4:] not in ( ".ttf", ".otf" ) :
QMessageBox.critical ( self, "HarfBuzz Tester - Error", "The specified font file does not seem to be a font file (only .ttf or .otf allowed)" )
self.outputLabel.clear() ; return
hbInFile = QTemporaryFile()
hbInFile.open()
hbInFileStream = QTextStream(hbInFile)
hbInFileStream.setCodec("UTF-8")
hbInFileStream << self.inputTextBox.toPlainText().replace("\t"," ") # replacing tabs because fonts usually do not contain a glyph for the tab character
hbInFileStream.flush()
hbOutFileTransBkgd = QTemporaryFile()
hbOutFileTransBkgd.open()
hbOutFileWhiteBkgd = QTemporaryFile()
hbOutFileWhiteBkgd.open()
import os
commonCommand = "hb-view --output-format=png" + \
" --font-file=" + fontFileName.replace(" ","\ ") + \
" --font-size=" + str(self.fontSizeSpin.value()) + \
" --text-file=" + hbInFile.fileName().replace(" ","\ ")
os.system ( commonCommand + " --output-file=" + hbOutFileTransBkgd.fileName().replace(" ","\ ") + " --background=#00000000" )
os.system ( commonCommand + " --output-file=" + hbOutFileWhiteBkgd.fileName().replace(" ","\ ") )
self.outputLabel.setPixmap( QPixmap ( hbOutFileTransBkgd.fileName(), "png" ))
hbInFile.close()
hbOutFileTransBkgd.close()
hbOutFileWhiteBkgd.close()
self.renderedPNGforUser = hbOutFileWhiteBkgd
def saveRenderedPNG(self) :
path = self.userSavedAsFileName if QFile.exists(self.userSavedAsFileName) else QDir.homePath()
saveAsFileName = QFileDialog.getSaveFileName ( self, "HarfBuzz Tester - Save rendering as...", path, "PNG Image (*.png)" )
if saveAsFileName != "" :
if QFile.exists(saveAsFileName) and not QFile.remove(saveAsFileName) :
QMessageBox.critical ( self, "HarfBuzz Tester - Could not save file", "A file already exists with that name. Could not remove it." )
else :
if not self.renderedPNGforUser.copy(saveAsFileName) :
QMessageBox.critical ( self, "HarfBuzz Tester - Could not save file", "Could not save to the given filename." )
else : # successfully saved
self.userSavedAsFileName = saveAsFileName
app = QApplication([])
mainWindow = MainWindow()
mainWindow.show()
app.exec_()
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