While testing the tagged download archive for release 0.3.1, a warning message from Qt occurred indicating that the window title did not contain a '[*]' placeholder. This was caused by the application loading the last opened file, after which the window modified flag is cleared. This triggers Qt to update the window title, which was not set yet, hence the warning message.
This warning did not occur if a file was specified on the command line. If the application was started with no prior loaded file or recent list, this message also did not occur, but the window title was set to "MainWindow" instead of the correct "Untitled - IBCP" title.
The warning did not occur if the file was specified on the command line because the code called the set current program function with the file specified, which set the window title before the file was loaded. The solution was to also call the set current program function if no file was specified on the command with the current program member variable value, which solved both the warning message problem and the "MainWindow" title problem.
[commit 6410a5318e]
Monday, January 21, 2013
Edit Box For Program Entry
Now that some additional GUI has been implemented, it is time to start to work on the edit box to make it more appropriate for editing a program and not just text. The immediate goal is to accept BASIC code that is currently recognized by the parser and translator, parse and translate it and display the translation in a dock widget beside the edit box. (A dock widget is a widget that can be moved or docked to any side of the application window or detached completely from the window.)
For an incremental compiler, the application will need to know when a line has been edited (when the user leaves a modified line) so that the line can be recompiled (for now translated), which could be several lines (by a deletion when multiple lines were selected, or a paste of several lines). Also, the font of the edit box needs to be changed to a fixed width font and there needs to be a way to add color, for example, indicating errors and syntax highlighting of BASIC keywords and other program elements.
As seen so far, this will be accomplished with the text cursor that is part of the QTextEdit's document. The document part of QTextEdit is one continuous string of characters, but there is a way to retrieve and replace individual lines within the document. All this needs to be figured out, which will take place over the next several commits.
But first, with additional GUI implemented and working, this is a good place to tag for v0.3.1. The various files (CMake, read me and release notes) were updated for this development release.
[commit a938626ffc]
For an incremental compiler, the application will need to know when a line has been edited (when the user leaves a modified line) so that the line can be recompiled (for now translated), which could be several lines (by a deletion when multiple lines were selected, or a paste of several lines). Also, the font of the edit box needs to be changed to a fixed width font and there needs to be a way to add color, for example, indicating errors and syntax highlighting of BASIC keywords and other program elements.
As seen so far, this will be accomplished with the text cursor that is part of the QTextEdit's document. The document part of QTextEdit is one continuous string of characters, but there is a way to retrieve and replace individual lines within the document. All this needs to be figured out, which will take place over the next several commits.
But first, with additional GUI implemented and working, this is a good place to tag for v0.3.1. The various files (CMake, read me and release notes) were updated for this development release.
[commit a938626ffc]
GUI – Pasting Plain Text
By default, the QTextEdit class that EditBox is derived from accepts rich text (formatted text). The solution for this matter was simply to call the setAcceptRichText() function with false as the argument to prevent pasting rich text. This call was added to the constructor of EditBox.
While adding this to the constructor, it was noticed that the EditBox class was essentially empty, deriving from QTextEdit adding no new functionality. The delete and select all action functions in MainWindow did more that just call a functions in edit box, so this code was moved to new functions in EditBox. Since delete is a reserved name, the delete text function was named remove().
[commit 4050620cae]
While adding this to the constructor, it was noticed that the EditBox class was essentially empty, deriving from QTextEdit adding no new functionality. The delete and select all action functions in MainWindow did more that just call a functions in edit box, so this code was moved to new functions in EditBox. Since delete is a reserved name, the delete text function was named remove().
[commit 4050620cae]
Subscribe to:
Posts (Atom)