[Yrogirg] configurable latex formulas font size. Fixes #3986

src/common/config.py

@@ -250,6 +250,7 @@ class Config:
 		'max_conversation_lines': [opt_int, 500, _('Maximum number of lines that are printed in conversations. Oldest lines are cleared.')],
 		'attach_notifications_to_systray': [opt_bool, False, _('If True, notification windows from notification-daemon will be attached to systray icon.')],
 		'check_idle_every_foo_seconds': [opt_int, 2, _('Choose interval between 2 checks of idleness.')],
+		'latex_png_dpi': [opt_str, '108',_('Change the value to change the size of latex formulas displayed. The higher is larger.') ],
 	}
 
 	__options_per_key = {

src/conversation_textview.py

@@ -854,15 +854,8 @@ class ConversationTextview:
 			exitcode = p.wait()
 
 		if exitcode == 0:
-			convert_version = helpers.get_output_of_command(
-				'convert -version')[0].split()[2]
-			convert_version = [int(n) for n in convert_version.split('.')]
-			if convert_version > [6, 3, 4]:
-				# -alpha option was added in 6.3.5 release
-				alpha = ['-alpha', 'off']
-			else:
-				alpha = []
-			p = Popen(['convert'] + alpha + [tmpfile + '.ps', tmpfile + '.png'],
+			latex_png_dpi = gajim.config.get('latex_png_dpi')
+			p = Popen(['convert', '-background', 'white', '-flatten', '-density', latex_png_dpi, tmpfile + '.ps', tmpfile + '.png'],
 				cwd=gettempdir())
 			exitcode = p.wait()