Hi thank you guys for the replies, Gergely, I can't really use FlowBox since I'm depending on gtk2, not 3. So the solution is really implementing my own widget as Joël said .. Joël in swing I usually use an event queue so that there is only one thread doing GUI modifications. Is that pattern used often in gtk? I think that this pattern is cleaner and more ellegant that synchronizing at every single thread, the problem is that I can't have lambda expressions in C :(. How would I apply this pattern to GTK?
Best regards, 2016-09-12 12:56 GMT-03:00 Joël Krähemann <jkraehem...@gmail.com>: > Hi again > > Don't mess synchronized with a mutex. The closest thing to > synchronized would be ags_task_thread_append_task() > and run things exclusively > > http://git.savannah.gnu.org/cgit/gsequencer.git/tree/ags/thread/ags_task_thread.h?h=0.7.x > > bests, > Joël > > > > On Mon, Sep 12, 2016 at 5:50 PM, Joël Krähemann <jkraehem...@gmail.com> wrote: >> Hi >> >> Since I know Javax/Swing I can tell you there is no synchronize >> keyword doing your magic. >> >> Please take a look at pthread_mutex_lock(), pthread_cond_wait(), >> pthread_cond_signal(), pthread_cond_broadcast() >> or pthread_barrier_wait(). >> >> Bests, >> Joël >> >> >> On Mon, Sep 12, 2016 at 5:17 PM, Joël Krähemann <jkraehem...@gmail.com> >> wrote: >>> Hi >>> >>> You can't do that without implementing your own widget because of >>> thread-safety issues. To do your own >>> GtkFlowBox implement GtkWidget:size-allocate and >>> GtkWidget:size-request the rest is up to you. >>> >>> Don't forget doing mutices or use g_timeout_add() but this is single >>> threaded and is invoked by >>> g_main_context_iteration(). >>> >>> For a simple example consider this: >>> >>> http://git.savannah.gnu.org/cgit/gsequencer.git/tree/ags/X/editor/ags_notebook.c?h=0.7.x#n167 >>> >>> It is a scrolled window containing buttons doing a scrollable area. >>> >>> You have to use gdk_threads_enter() and gdk_threads_leave(). Might be >>> you have even to acquire >>> the GMainContext. >>> >>> Bests, >>> Joël >>> >>> >>> >>> On Mon, Sep 12, 2016 at 5:03 PM, Gergely Polonkai <gerg...@polonkai.eu> >>> wrote: >>>> Hello, >>>> >>>> I have no knowledge of Java/Swing, but based on your requirements I guess >>>> you need FlowBox[1]. >>>> >>>> Best, >>>> Gergely >>>> >>>> [1] https://developer.gnome.org/gtk3/stable/GtkFlowBox.html >>>> >>>> On Mon, Sep 12, 2016, 16:35 Daniel. <danielhi...@gmail.com> wrote: >>>> >>>>> Hi everybody, >>>>> >>>>> I have a library implementing some protocol. That library is >>>>> multithread and is responsible to delivery messages to remote nodes >>>>> and retrieve it's responses. I need to visualise the whole mess >>>>> running. >>>>> >>>>> To do this I wrote a simple application in Java/Swing where for each >>>>> remote node one thread is created. The thread will send a message and >>>>> wait for response in a closed loop. Each thread is represented at GUI >>>>> by a label on the screen. When it's idle the background of that label >>>>> becomes green, when is waiting for response it is yellow and if >>>>> timeouts it becomes red. All labels have the same information so that >>>>> they have exactly the same size. >>>>> >>>>> Beside the request/repsonse there is events that can arrive from the >>>>> nodes too. That events need to be replied as the messages. When an >>>>> event arrives it's showed up on screen as a new label. When it's reply >>>>> is acknowledge it's removed from the screen. >>>>> >>>>> In pratice there is a big container where the labels came and go and >>>>> change its background colors based on messages, replies and events >>>>> comming and going. >>>>> >>>>> I've been using FlowLayout as the "big container". The labels are >>>>> added and arrange horizontally by FlowLayout. When no room is avaible >>>>> at the current row, a new row is added. When the rows exceed the >>>>> window size a scrowbar appears. >>>>> >>>>> I'm looking for something silimar with GTK2 (I'll run in a embeeded >>>>> system that doesn't have GTK3). >>>>> >>>>> My questions are: >>>>> >>>>> 1) Is there some container with equivalent behavior to the Swing's >>>>> FlowLayout? If no I think I'll need to build one from hbox+vbox, what >>>>> would be the best aproach to it. >>>>> 2) How is the best way to change the background of a label? >>>>> 3) What is the better aproach when adding instantiating, adding, >>>>> showing, hiding removing and freeing widgets at runtime? What can get >>>>> wrong? >>>>> >>>>> References: >>>>> https://docs.oracle.com/javase/tutorial/uiswing/layout/visual.html#flow >>>>> >>>>> Best regards, >>>>> -- >>>>> "Do or do not. There is no try" >>>>> Yoda Master >>>>> _______________________________________________ >>>>> 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 -- "Do or do not. There is no try" Yoda Master _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
