GdkPixbuf and click events
I have a program that adds a GdkPixbuf to a GtkTextView. I would like to right click on the image and capture the mouse click event and execute a callback function. Is there any way of achieving this using GdkPixbuf? Thanks, Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTextView loses selection when using GtkSpinButton
I have a GtkTextView as part of my application along with a GtkSpinButton object to control the font size on the GtkTextView. If I make a selection in the text and then click in the entry portion of the spin button and then click the arrows, everything works fine. However, if I do not click in the entry portion but directly click on the up or down arrow of the spin button, nothing happens and I even lose the selection in the GtkTextView. Is this a known issue and is there a way to overcome this issue? This behavior can confuse users. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Threads and gtk_widget_show (code should not be reached?)
I have encountered a strange error followed by a crash when I add the following object to a GtkTextView by creating a child anchor and call gtk_widget_show_all. The object that is added The object that is added to the child anchor is a GtkFrame inside which is a GtkTable and each cell of the table contains another GtkFrame each of which contains a GtkTextView. The error This works fine if it is all done from the main program. However, when I create the hierarchy described above in another thread and call gtk_widget_show_all on the GtkFrame that is added, I get an error in paint saying code should not be reached. Before this error, there is a warning that the iterator in text view has changed. I am not sure if the warning and error are related. Source of the error I replaced gtk_widget_show_all by gtk_widget_show in a loop going down the tree and calling it for each object. The source of the error was the gtk_widget_show on the leaf level view objects in the frames contained in each cell of the table. Situations under which it works When the leaf level GtkTextView objects are not part of the hierarchy of widgets I create or they are replaced by GtkEntry objects, everything works fine. Again, note that it also works fine if I do not have another thread and call everything from the main program on startup but I need to have another thread as this object will be created during the course of the program. I've tried both g_idle_add as well as using the gdk_threads_enter/leave pair. Any help will be appreciated. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Threads and gtk_widget_show (code should not be reached?)
I used the gdk_threads_enter/gdk_threads_leave pair, but it did not work. It does not work even when the whole creation of the hierarchy is within the gdk_threads_enter/gdk_threads_leave pair. I am able to get it to work without using GtkEntry instead of GtkTextView if I call the function in main(). However, as I pointed out, it works if I replace the GtkTextView with a GtkEntry within each cell of the table. -Ferdinand --- On Wed, 1/30/13, Edscott Wilson edscott.wilson.gar...@gmail.com wrote: The current method for calling gtk_xx instructions is from the main thread only (i.e., that which owns the main loop context). You can do this by means of g_main_context_invoke(). Otherwise you must use the deprecated gdk_threads_enter/gdk_threads_leave mutex method. The deprecated method is slower. If you do not do the above, you will get all sort of errors just like the one you describe. HTH 2013/1/30 Ferdinand Ramirez ramirez.ferdin...@yahoo.com I have encountered a strange error followed by a crash when I add the following object to a GtkTextView by creating a child anchor and call gtk_widget_show_all. The object that is added The object that is added to the child anchor is a GtkFrame inside which is a GtkTable and each cell of the table contains another GtkFrame each of which contains a GtkTextView. The error This works fine if it is all done from the main program. However, when I create the hierarchy described above in another thread and call gtk_widget_show_all on the GtkFrame that is added, I get an error in paint saying code should not be reached. Before this error, there is a warning that the iterator in text view has changed. I am not sure if the warning and error are related. Source of the error I replaced gtk_widget_show_all by gtk_widget_show in a loop going down the tree and calling it for each object. The source of the error was the gtk_widget_show on the leaf level view objects in the frames contained in each cell of the table. Situations under which it works When the leaf level GtkTextView objects are not part of the hierarchy of widgets I create or they are replaced by GtkEntry objects, everything works fine. Again, note that it also works fine if I do not have another thread and call everything from the main program on startup but I need to have another thread as this object will be created during the course of the program. I've tried both g_idle_add as well as using the gdk_threads_enter/leave pair. Any help will be appreciated. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Threads and gtk_widget_show (code should not be reached?)
--- On Wed, 1/30/13, Andrew Potter agpot...@gmail.com wrote: If you are getting an iterator warning, you may be trying to use an invalidated GtkTextIter. Be sure to read http://developer.gnome.org/gtk3/stable/TextWidget.html I have nothing in there that modifies the buffer. I just create the view and add it. In fact, the error comes from the line gtk_widget_show_all. If I replace this line with code to traverse the hierarchy and do a gtk_widget_show on each object, the error manifests itself only when I get to the GtkTextView at the leaf nodes. Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Displaying tabular data in GtkTextView
Does anyone here know what is the best way to display a table in GtkTextView? I want to have a table with borders and editable cells like in MS Word. Thanks for any advice to achieve this, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Incrementally inserting GdkPixbuf into GtkTextBuffer
How do I insert an image into a GtkTextBuffer incrementally so that I can see that the image is loading instead of having to wait for some time with no apparent activity and seeing it all at once after a time lag? I looked at GdkPixbufLoader, but am unable to figure out how to use this. I called gdk_pixbuf_loader_write within a while loop as and when the image array was getting data and then in the update callback, I called gdk_pixbuf_loader_get_pixbuf followed by gtk_text_buffer_insert_pixbuf. However, I keep getting an error that the assertion on GDK_IS_PIXBUF failed. Note that I am able to insert a GdkPixbuf into GtkTextBuffer using gtk_text_buffer_insert_pixbuf, but this works only if I read the image fully before creating the pixbuf. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTreeView Editable cells?
I have a GtkTreeView and I am able to double click and trigger my function on double clicking. Now if I add a renderer and make it editable, double clicking always goes to edit mode for the cell. Instead, I want to edit only when I single click on an already selected cell and my double click action should still trigger a separate function. How can I achieve both? I am able to test my program by having either of the two functionalities but not both. Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How do I fix the window size?
--- On Tue, 6/5/12, Chris Vine ch...@cvine.freeserve.co.uk wrote: Are you calling gtk_scrolled_window_add_with_viewport()? If so, use gtk_container_add() instead, because tree views have native scrolling capabilities. Tried out both. I'm in the process of trying out other options like using boxes and will let you know what works. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
How do I fix the window size?
Apologies if this has been asked before, but I searched online and could not find any discussion on this issue and I did not find anything on the documentation page. I have a treeview and a scrollbar which are both within a hbox. The hbox is within a window. When I expand the treeview, the window resizes itself to include the whole treeview. The biggest problem is when the treeview has more elements than what can be seen on a single screen. The window size becomes larger than the display. I want the window size to remain the same and use my scrollbar to navigate my treeview. How do I achieve this? gtk_window_resize does not seem to be the solution. Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: How do I fix the window size?
--- On Tue, 6/5/12, James Tappin jtap...@gmail.com wrote: I think the solution is to place the treeview in a gtk_scrolled_window rather than using an hbox and an explicit scrollbar. The reason for trying out with an explicit hbox is that the column headers scroll out of view with a gtk_scrolled_window. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkTextView and bidi text
--- On Mon, 4/23/12, Dov Grobgeld dov.grobg...@gmail.com wrote: Lots of years ago we spoke about having a direction override as a paragraph attribute, but we never got around to implementing it. I think it is a good idea to give control to the programmer rather than make it automatic. Making everything automatic and making the programmer feel helpless is the Microsoft way. There, now that I've insulted you, I am sure you will consider adding this feature. :-) Seriously, this should not even be at the paragraph level, but in the complete control of the programmer. The programmer should be able to set the direction and this should hold until it is set again. Even if the automatic direction detection exists, there should be the ability to override it. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTextView and bidi text
How can I force GtkTextView object to use left to right rendering when I type in a character which has the default behavior of being from a RTL language? I need this behavior when I mix some RTL characters with LTR characters and the first character on a line is of RTL type. The following lines seem to have no impact. GtkTextView *view; ... gtk_widget_set_direction(view, GTK_TEXT_DIR_LTR); gtk_widget_set_default_direction(GTK_TEXT_DIR_LTR); -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
GtkTextView and PangoFcDecoder
Is it possible to use PangoFcDecoder with GtkTextView so that I can use the glyph index to render the glyphs? If so, at what point does the program invoke the callback provided as a parameter in pango_fc_font_map_add_decoder_find_func? The documentation says it is called during create_font and the examples I see use GnomeCanvas. However, my program does not use GnomeCanvas. I am not sure if GnomeCanvas is related to GtkTextView. I am looking for the best way to render my glyphs based on glyph index in an already existing program that is based on GtkTextView. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkTextView and PangoFcDecoder
The confusing line in the documentation for PangoFcDecoder at http://developer.gnome.org/pango/stable/PangoFcFontMap.html#pango-fc-font-map-add-decoder-find-func is this: This function saves a callback method in the PangoFcFontMap that will be called whenever new fonts are created. So after I write my decoder, do I have to explicitly create a font? For example, Mozilla has a decoder at http://people.mozilla.com/~chofmann/l10n/tree/mozilla/gfx/src/gtk/mozilla-decoder.cpp Is this complete in itself or does mozilla_find_decoder get invoked only when a font is explicitly created somewhere in the code? If it needs to be explicitly created, does anyone know where in Mozilla code it gets created so that I can use it as an example? Thanks, -Ferdinand --- On Thu, 2/23/12, Ferdinand Ramirez ramirez.ferdin...@yahoo.com wrote: Is it possible to use PangoFcDecoder with GtkTextView so that I can use the glyph index to render the glyphs? If so, at what point does the program invoke the callback provided as a parameter in pango_fc_font_map_add_decoder_find_func? The documentation says it is called during create_font and the examples I see use GnomeCanvas. However, my program does not use GnomeCanvas. I am not sure if GnomeCanvas is related to GtkTextView. I am looking for the best way to render my glyphs based on glyph index in an already existing program that is based on GtkTextView. -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
cursor position in filename entry of gtkfilechooserdialog
If I set the filename using gtk_file_chooser_set_current_name from a callback method for key-press-event, the filename shows up in the text entry box, but the cursor position is at 0 once the filename has been set. How do I set the cursor position to be at the end of the string I set as the filename? Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: cursor position in filename entry of gtkfilechooserdialog
--- On Thu, 2/2/12, Emmanuel Thomas-Maurin manutm...@gmail.com wrote: I think you may use something like: gtk_editable_set_position(GTK_EDITABLE(entry), -1) The problem is that I don't seem to have access to location_entry in GtkFileChooser for me to use the above function. Do you know how I can get hold of location_entry? I believe location_entry is the GtkEntry object and I need a handle to that. Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Need control of filename entry area in gtkfilechooser
When I type in the filename into the filename entry area in gtkfilechooser dialog, I want to intercept the text that is entered, modify it and then display it in the filename area. How do I do this? For a regular text buffer, I know how to do this: I can do a gtk_text_view_get_buffer and then have a callback for insert-text. I can then modify the text that is entered and then insert it into the buffer, all from inside the callback. I want to be able to achieve the same thing for filename entry. Does anyone know how to do this? Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Custom font for application
Does anyone here know how I can create and load a custom font for my application from the source code? What method or methods do I need to invoke to load the font that I can render? What rendering methods do I need to override so that my custom fonts are the ones rendered? Are there any examples of source code on how to achieve this? Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Questions on creation of glyphs
I am sorry to ask a basic question. Was this the right list to post my queries or am I on the wrong list? If this is the wrong list, can someone point me to the correct list? I need to create these glyphs and use them in the manner I described for an application. Is there a basic tutorial or is there another thread with this information? Thanks, -Ferdinand --- On Thu, 7/14/11, Ferdinand Ramirez ramirez.ferdin...@yahoo.com wrote: From: Ferdinand Ramirez ramirez.ferdin...@yahoo.com Subject: Questions on creation of glyphs To: gtk-app-devel-list@gnome.org Date: Thursday, July 14, 2011, 6:33 PM I want to create a small set (say 5-10 symbols) of custom glyphs and want these symbols to be part of the alphabet of a fictional language. I also want to assign unused unicode values to these symbols and want these symbols to appear on my application as well as the terminal when I press specific keys. I want it to appear on my terminal screen because that is the easiest way for me to test my compilation. (I know I have to recompile gnome terminal for this but I am fine with that.) So here are my questions. (1) How do I create new glyph files? (2) Where in the source code are the unicode values mapped to the glyphs and which files will I need to modify to map some unused unicode values to the newly created glyphs? (3) Where in the source code are keycodes mapped to the unicode values and which files will I need to modify this map? I want to understand the flow through the source code and will appreciate anyone who can give me this information. Thanks, -Ferdinand ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
