Re: coordinate system context for a drawing area uses (relative to get_allocation)
On Sat, May 13, 2017 at 05:00:43PM -0700, Dan Hitt wrote: > So it appears that when you draw in a drawing area, using commands > like (cairo_)move_to and (cairo_)line_to, the path is rendered > relative to the top left of the area. > > More explicitly, if you try to figure out how far you can draw, the x > and y values from get_allocation(...) are not relevant, only the width > and height. > > Or in other words, the location at the top left of the drawing area > has coordinates (0, 0) and at the bottom right has coordinates (width, > height), rather than (x, y) and (x+width, y+height), at least as far > as primitives like move_to and line_to are concerned. > > This sure seems to be true on my system (debian stretch) using gtk3, > but if i'm wrong, please correct me. Yes, you are correct, things do work this way. > Also, is this documented anywhere, or am i the only person clueless > enough to try to get to the top left by going to the x,y returned by > get_allocation, instead of to (0,0)? This is documented in the draw signal docs [1]. Cheers, Tadej [1] https://developer.gnome.org/gtk3/stable/GtkWidget.html#GtkWidget-draw -- Tadej Borovšak tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Get a list of object *names* from GtkBuilder
Hi. Dne 16.11.2015 (pon) ob 13:26 +1100 je Daniel Kasak napisal(a): > Greetings all. > > I'd like to get a list of object names from a GtkBuilder object ( I'm > using Perl ). I know about > https://developer.gnome.org/gtk3/stable/GtkBuilder.html#gtk-builder-g > et-objects > - which returns a list of objects, but I really need the names. Is it > possible? Maybe you can call perl equivalent of gtk_buildable_get_name() on each object in the list, returned by gtk_builder_get_objects()? Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com blog.borovsak.si ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Issue with linking.
Hi! Dne 09.06.2014 (pon) ob 19:26 -0500 je Bill Brown napisal(a): Hello Gtk users / devs: I've got a program that compiles against gtk3 but fails to link. The error I get is. [ERROR] /usr/bin/ld: /home/bill//container.o: undefined reference to symbol 'gtk_window_get_default_widget' [ERROR] /usr/lib/libgtk-3.so.0: error adding symbols: DSO missing from command line How are you compiling your program? This error is usually caused by listing libraries before yur objects on linker command line. Proper way of compiling GTK+ applications would be something like this: gcc -o app obj1.o obj2.o $(pkg-config --libs gtk-3.0) Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com blog.borovsak.si ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: calls of g_slice_new in different threads return the same address?
Hello. Dne 11.03.2014 (tor) ob 19:15 +0800 je sunxiaobin napisal(a): Hi, I am using g_slice_new to alloc some memory in my work, and it seems that sometimes same address would be returned if g_slice_new in different threads are called at the same time, I'm wondering if anyone has ever encountered this problem? or it's already a known bug? because i am using the glib2-2.12.3, it's really a bit old now. i write a test program to create three threads to keep alloc and free mems using g_slice_new and g_slice_free respectively, i will put the allocated mem in a hash table, so everytime after calls to g_slice_new, i check if it's in the hash table , and it turns out that it does happen. and if i setG_SLICE=always_malloc before i run the test program, there will be no problem. any advice will be appreciated. Attached is my test program, i copy some codes from ghash.c so that it can be compiled only with gcc -o gslice_test gslice_test.c -lglib-2.0 -I/usr/include/glib-2.0/ -I/usr/lib64/glib-2.0/include/ -pthread -g Here is my enviroment: os: Linux 183 2.6.18-128.el5 #1 SMP Wed Jan 21 10:41:14 EST 2009 x86_64 x86_64 x86_64 GNU/Linux (old enough too) glib version: glib2-debuginfo-2.12.3-2.el5.centos glib2-2.12.3-2.fc6 glib2-2.12.3-2.fc6 glib2-devel-2.12.3-2.fc6 glib2-devel-2.12.3-2.fc6 ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list If I'm not mistaken, older releases of GLib are not thread-safe by default: you need to call g_thread_init(). Does adding this call makes any difference? Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com blog.borovsak.si ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: GTK signals question.
Dne 05.03.2014 (sre) ob 18:38 +1100 je Chris Angelico napisal(a):
On Wed, Mar 5, 2014 at 6:29 PM, Tristan Van Berkom
tris...@upstairslabs.com wrote:
Interesting, if I were you I would try to share the same adjustment
between all of your views.
I.e. I would keep the adjustment in the finest grained unit of each
unit you want to display, and have your spin buttons format the value
differently depending on what they are used for (or perhaps use GtkScale
if that makes sense in your UI).
Now *that* is an elegant solution, if it can be done!
Sure it can;) In the code below, this sharing is implemented between
spin buttons in first row. Beware though that now both widgets increment
for the same angle - increment in fixed to 0.1 radians.
If you need more flexibility, you can use 2 adjustments and bind their
value property through simple transformation. This method is
implemented in second row. Now incrementing can be done independently in
both widgets (first widgets increments in 0.1 radians, second in 1
degree steps).
--8-
#include gtk/gtk.h
static gboolean
cb_output (GtkSpinButton *spin)
{
GtkAdjustment *adj = gtk_spin_button_get_adjustment (spin);
double val = gtk_adjustment_get_value (adj);
gchar *text = g_strdup_printf (%d, (gint)(val * 180 / G_PI + .5));
gtk_entry_set_text (GTK_ENTRY (spin), text);
g_free (text);
return TRUE;
}
static gint
cb_input (GtkSpinButton *spin,
gdouble *value)
{
gchar const *text = gtk_entry_get_text (GTK_ENTRY (spin));
double val = g_strtod (text, NULL);
*value = val * G_PI / 180;
return TRUE;
}
static gboolean
rad_to_deg (GBinding *bind G_GNUC_UNUSED,
const GValue *from,
GValue *to,
gpointer data G_GNUC_UNUSED)
{
double val = g_value_get_double (from);
g_value_set_double (to, val * 180 / G_PI);
return TRUE;
}
static gboolean
deg_to_rad (GBinding *bind G_GNUC_UNUSED,
const GValue *from,
GValue *to,
gpointer data G_GNUC_UNUSED)
{
double val = g_value_get_double (from);
g_value_set_double (to, val / 180 * G_PI);
return TRUE;
}
int
main (intargc,
char **argv)
{
GtkWidget *window, *grid, *s1, *s2, *s3, *s4;
GtkAdjustment *adj, *adj1, *adj2;
gtk_init (argc, argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, destroy, gtk_main_quit, NULL);
grid = gtk_grid_new ();
gtk_container_add (GTK_CONTAINER (window), grid);
/* Use single adjustment: both spin buttons use radians as the data
* storage, second one converts radians to degrees on input/output */
adj = gtk_adjustment_new (1, 0, 2 * G_PI, 0.1, 0.5, 0);
s1 = gtk_spin_button_new (adj, 0.5, 2);
g_object_set (s1, expand, TRUE, NULL);
gtk_grid_attach (GTK_GRID (grid), s1, 0, 0, 1, 1);
s2 = gtk_spin_button_new (adj, 0.5, 2);
g_object_set (s2, expand, TRUE, NULL);
g_signal_connect (s2, output, G_CALLBACK (cb_output), NULL);
g_signal_connect (s2, input, G_CALLBACK (cb_input), NULL);
gtk_grid_attach (GTK_GRID (grid), s2, 1, 0, 1, 1);
/* Use 2 adjustments: one in radians and one in degrees. GBinding
* keeps values of those adjustments in sync */
adj1 = gtk_adjustment_new (3.14, 0, 2 * G_PI, 0.1, 0.5, 0);
s3 = gtk_spin_button_new (adj1, 0.5, 2);
g_object_set (s3, expand, TRUE, NULL);
gtk_grid_attach (GTK_GRID (grid), s3, 0, 1, 1, 1);
adj2 = gtk_adjustment_new (100, 0, 360, 1, 5, 0);
s4 = gtk_spin_button_new (adj2, 0.5, 0);
g_object_set (s4, expand, TRUE, NULL);
gtk_grid_attach (GTK_GRID (grid), s4, 1, 1, 1, 1);
g_object_bind_property_full (adj1, value, adj2, value,
G_BINDING_BIDIRECTIONAL |
G_BINDING_SYNC_CREATE,
rad_to_deg, deg_to_rad,
NULL, NULL);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
--8---
Cheers,
Tadej
--
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blog.borovsak.si
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Re: Gtk Text View Question
Hi. Sun5# gcc -Wall `pkg-config --cflags --libs gtk+-2.0` Test1.c -o Test1 Test1.c: In function `createConsoleBox': Test1.c:6: warning: implicit declaration of function `gtk_text_view_get_vadjustment' Test1.c:6: warning: passing arg 1 of `gtk_vscrollbar_new' makes pointer from integer without a cast Undefined first referenced symbol in file gtk_text_view_get_vadjustment /var/tmp//ccS4tO2f.o ld: fatal: Symbol referencing errors. No output written to Test1 collect2: ld returned 1 exit status Thomas Dineen What version of GTK+ is installed on your machine? get_vadjustment() function is only available since GTK+-2.22. You can check your version like this: pkg-config --modversion gtk+-2.0 Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com blog.borovsak.si ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: Gtk Text View Question
Hi.
Dne 29.09.2013 (ned) ob 11:22 -0700 je Thomas Dineen napisal(a):
#include gtk/gtk.h
GtkWidget* createConsoleBox()
{
GtkWidget* textArea = gtk_text_view_new();
GtkWidget* scrollbar=
gtk_vscrollbar_new(gtk_text_view_get_vadjustment(GTK_TEXT_VIEW(textArea)));
GtkWidget* textEntry = gtk_entry_new();
GtkWidget* console = gtk_table_new(3, 2, FALSE);
gtk_table_attach_defaults(GTK_TABLE(console), textArea, 0, 1, 0, 1);
gtk_table_attach_defaults(GTK_TABLE(console), scrollbar, 1, 2, 0, 1);
gtk_table_attach_defaults(GTK_TABLE(console), textEntry, 0, 2, 1, 2);
//This code sets the preferred size for the widget, so it does not
ask for extra space
gtk_widget_set_size_request(textArea, 320, 240);
return console;
}
int main(int argc,char* argv[]){
GtkWidget *window;
gtk_init(argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), Simple Sample);
gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);// does
not matter this size
gtk_container_add(GTK_CONTAINER(window), createConsoleBox());
gtk_widget_show_all(window);
gtk_window_set_resizable(GTK_WINDOW(window),FALSE);//because of this
gtk_main();
return 0;
}
This code compiles just fine here. How are you compiling this program
and what errors do you get?
Cheers,
Tadej
--
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Re: Gdk PixbufAnimation supported formats
Hi. 2013/4/18 Kip Warner k...@thevertigo.com I've tried looking through the Gtk+ source in gdk/* and gtk/*, but maybe I've just been looking in the wrong places. I also tried looking through what relevant documentation I could find on the Gdk's C API, and didn't manage to find what I needed. I'm guessing that perhaps this is because the actual loading is deferred to some other lower level external backend to Gdk, such as Cairo, but I'm speaking from ignorance. Gtk+ uses gdk-pixbuf [1] library to load/store images. You can check what image formats your library supports by calling gdk-pixbuf-query-loaders [2] utility. Cheers, Tadej [1] https://developer.gnome.org/gdk-pixbuf/stable/ [2] https://developer.gnome.org/gdk-pixbuf/stable/gdk-pixbuf-query-loaders.html -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Where are the GTK+1.2 sources?
Hi. 2013/2/20 Troy Watson drt...@gmail.com: Where can I download the source for GTK+1.2? The official link from www.gtk.org doesn’t work: http://ftp.gnome.org/pub/gnome/sources/gtk+/1.2/ Sources can be downloaded from [1]. Cheers, Tadej [1] ftp://ftp.gtk.org/pub/gtk/ -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: Three widgets inside resizeable panes
Hi. How can I implement three widgets inside horizontally resizeable panes, as given: +-+-+-+ | ! ! | | ! ! | | ! ! | | ~ ~ | | w1 ~ w2 ~ w3 | | ~ ~ | | ! ! | | ! ! | | ! ! | +-+-+-+ Try creating something like this: +-+---+ | !+++| | !|!|| | !|!|| | ~|~|| | w1 ~| w2 ~ w3 || | ~|~|| | !|!|| | !|!|| | !+++| +-+---+ Widget hierarchy should look something like this parent `- HPaned1 +- w1 `- HPaned2 +- w2 `- w3 Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com blog.borovsak.si ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: gtkrbtree core dump
Hi. I was wondering about that, but unfortunately my code does not explicitly use any GtkTree* objects! Is there any way to search the documentation efficiently to determine which object types are inheriting from GtkTreeView? I have begun searching on my objects one by one (e.g., GtkMenu, etc.), but I am not finding any that appear to inherit from GtkTree*. Of course my app uses dozens of different object types and it will be quite a chore to exhaustively search the documentation of each one to examine its object hierarchy graph. I suspect that in the end I will come up empty, as I have already looked at the objects I am using which, by their appearance, look the most related to a GtkTreeView, e.g., menus, file chooser dialogs, etc. IF you want to see which widgets are derived from GtkTreeView, simply open GtkTreeView API docs and check Object Hierarchy section. Direct descendants will be listed here (if there are any). There is no stock gtk widget that would be derived from GtkTreeView. File chooser dialogs use GtkTreeView to display files/folders and as far as I can tell from your description, this is the only place where tree view is used in your app. Maybe file system changes cause tree view to update itself in a bad way? (I'm mostly guessing here after a quick git grep through sources.) Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com tadeboro.blogspot.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Question about deprecated Gdk thread lock functions
Hi. As far as I know, gdk-pixbuf is thread-safe and those global locks are not needed. Are you sure other parts of your code that could contribute to this error are fine? Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com tadeboro.blogspot.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: GList strange behavior
Hi. Not sure what is troubling you here. GList is represented by pointer to first element or NULL if list is empty. And when you append items to the list, the address of the list stays the same, since first element of the list is unchanged (exception to this is when append first element to an empty list). Some code to explain some things: GList *list = NULL /* Empty list */ list = g_list_append (list, GINT_TO_POINTER (1)); /* Add first element, list points to some ADDR1 */ list = g_list_append (list, GINT_TO_POINTER (2)); /* Add second element, list still points to ADDR1 */ ... Cheers, Tadej -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: getting the icon pixbuf for a file
Hi. I am trying to get the icon bitmap for a file and insert it into a TreeView widget - That is the pixbuf for the mime-type of a file. Is there any examples of doing this in plain C using GTK/GLib? I think you'll want gtk_widget_render_icon() function [1]. This will use current theme settings to load proper icon and render it. For icon names, you can consult gtk-demo application that features icon browser. Cheers, Tadej [1] http://developer.gnome.org/gtk3/stable/GtkWidget.html#gtk-widget-render-icon -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: drawing on offscreen surface
Hi! Thanks for the code. However, it does not draw anything. I assume the draw rectangle need to be done in draw_cb() so I added this code in cairo_set_source_surface(cr, surface, 0, 0); cairo_set_source_rgb(cr, 0, 1, 0); cairo_rectangle(cr, 300, 300, 200, 200); cairo_stroke(cr); cairo_paint(cr); but it still does not draw any rectangle. Do I not need to have expose handler to draw? What version of GTK+ are you using? Simple app I sent to you uses version 3 and will not work properly with version 2. If you're using GTK+ version 2, you'll need to make some minor changes (replace draw signal with expose-event signal, update draw callback prototype and manually create cairo context for GTkDrawingArea's GdkWindow). Also, I would like to know how to render contents from main window AND from offscreen both together on main visible window say, a primitive (Rectangle) on main window and another primitive (circle) from offscreen? Could you please show me how? Not sure what is giving you trouble here. Drawing from offscreen is done by two simple function calls: cairo_set_source_surface() and cairo_paint(). If you need something else drawn onto your widgets, simply draw that from inside draw (or expose-event for GTK+ 2.x) callbackusing cairo drawing functions. Cheers, Tadej -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-list
Re: drawing on offscreen surface
Hello.
Have a look at this code (targeted at GTK+-2.x):
#include gtk/gtk.h
static cairo_surface_t *surface = NULL;
static gboolean
configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
cairo_t *cr;
g_print(configure event: %d, %d\n, event-width, event-height);
if (surface)
cairo_surface_destroy (surface);
surface = gdk_window_create_similar_surface (event-window,
CAIRO_CONTENT_COLOR,
event-width,
event-height);
cr = cairo_create(surface);
cairo_set_source_rgb(cr, 1, 0, 0);
cairo_paint (cr);
cairo_move_to (cr, 100, 100);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_set_font_size (cr, 20);
cairo_show_text (cr, Offscreen buffer is red);
cairo_destroy(cr);
return FALSE;
}
static gboolean
draw_cb (GtkWidget *widget,
GdkEventExpose *event,
gpointerdata)
{
cairo_t *cr;
g_print(draw event\n);
cr = gdk_cairo_create (event-window);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
cairo_move_to (cr, 200, 200);
cairo_set_source_rgb (cr, 0, 1, 0);
cairo_set_font_size (cr, 20);
cairo_show_text (cr, This text is not blitted);
cairo_destroy (cr);
return TRUE;
}
int
main(intargc,
char **argv)
{
GtkWidget *window,
*area;
gtk_init(argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 1200, 800);
g_signal_connect (window, destroy, gtk_main_quit, NULL);
area = gtk_drawing_area_new();
g_signal_connect (area, expose-event,
G_CALLBACK (draw_cb), NULL);
g_signal_connect (area, configure-event,
G_CALLBACK(configure_event_cb), NULL);
gtk_container_add (GTK_CONTAINER (window), area);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
surface is your offscreen buffer and contains red background and black
text. This is then blitted during expose-event and to finish off, some
green text is added. And that's it.
Cheers,
Tadej
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Re: drawing on offscreen surface
Hi.
There is a lot of unnecessary code in your example. I attached a
cleaned-up example that demonstrates how to handle situations like
yours.
Cheers,
Tadej
#include gtk/gtk.h
static cairo_surface_t *surface = NULL;
static gboolean
configure_event_cb (GtkWidget *widget,
GdkEventConfigure *event,
gpointer data)
{
cairo_t *cr;
g_print(configure event: %d, %d\n, event-width, event-height);
if (surface)
cairo_surface_destroy (surface);
surface = gdk_window_create_similar_surface (event-window,
CAIRO_CONTENT_COLOR,
event-width,
event-height);
cr = cairo_create(surface);
cairo_set_source_rgb(cr, 1, 0, 0);
cairo_paint (cr);
cairo_destroy(cr);
return FALSE;
}
static gboolean
draw_cb (GtkWidget *widget,
cairo_t *cr,
gpointer data)
{
g_print(draw event\n);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_paint(cr);
return TRUE;
}
int
main(intargc,
char **argv)
{
GtkWidget *window,
*area;
gtk_init(argc, argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (GTK_WINDOW (window), 1200, 800);
g_signal_connect (window, destroy, gtk_main_quit, NULL);
area = gtk_drawing_area_new();
g_signal_connect (area, draw,
G_CALLBACK (draw_cb), NULL);
g_signal_connect (area, configure-event,
G_CALLBACK(configure_event_cb), NULL);
gtk_container_add (GTK_CONTAINER (window), area);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
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Re: gtk-win32 crash when trying to move a GTK top level window
Hi. 1) Launch any gtk-win32 app 2) Right-click the application's title bar and select 'Move' 3) Without clicking your mouse yet, move the mouse, then left-click it, anywhere outside of the app 4) Right-click the title bar again and your app will crash If this is still present in the latest version I can file a bug with some more information I tested these steps using latest stable Gimp on Windows 7 and could not replicate the crash (unfortunately I don't know which version of GTK+ Gimp installer packs). I also tested this using gtk-demo.exe app from latest all-in-one bundle from gtk.org and still no crash. So it looks like things have been fixed somewhere between 2.20 and 2.24.10? Cheers, Tadej -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK 3.0 inactive buttons (Buttons : maximize , minimize , close )
Hello. Hello How I can make the buttons are inactive , the buttons of the window (Buttons : maximize , minimize , close ) or without focus when the pointer isover them ? I need to get the effect . Caso 2 . View image http://fotos.subefotos.com/607c3fb8e19de4ed18357b85a33b3ab5o.png This is not something you could do with GTK+, since window decorations are usually handled by window manager. What window manager (desktop) are you using? Maybe it can be themed to behave this way? Cheers, Tadej -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com tadeboro.blogspot.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK Menu Window Type
Hello. Dne 15.06.2012 (pet) ob 14:14 +1000 je BRAGA, Bruno napisal(a): I am trying to use an application written in Perl/GTK (volwheel - http://oliwer.net/b/volwheel.html), but I had some trouble to display the popup menu on my screen, because I am using i3wm as my window manager, and it is bringing the menu as a whole (top level) window instead of a popup. According to developers of i3wm, this happens because the window type is not properly set. I quickly glimpsed at the volwheel's code [1] and popup menu you describe seems to be just a normal, undecorated toplevel window and is not a menu per-see. In i3, all windows with type dialog, utility, toolbar and splash windows are defined to be floating (displayed such as a popup on screen), and all others are displayed as a top level. Is there any way to come around this problem? I think this can be solved by simply changing the window type hint to something from the list above. It should be simple thing to do, since all you need to change is line 29 in linked file. Cheers, Tadej [1] http://code.google.com/p/olwtools/source/browse/trunk/volwheel/lib/MiniMixer.pm -- Tadej Borovšak tadej.borov...@gmail.com tadeb...@gmail.com tadeboro.blogspot.com ___ gtk-perl-list mailing list gtk-perl-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-perl-list
Re: Why are GtkAdjustments not buildable?
Hello Hello, does anyone know why GtkAdjustments are not buildable? They are buildable. (Glade has been producing markup for adjustments for as long as I know). What makes you think they are not? Cheers, Tadej -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: No more poppler_page_render_to_pixbuf() in Ubuntu 12.04
Hello. I used the code below to render a page of a pdf to a scrolled window in a gtk application of mine. After downloading Ubuntu 12.04 I get that there is no more support for poppler_page_render_to_pixbuf(). I do know that we are supposed to use cairo. But how? How do I replace the code below with cairo? What are we supposed to use, total cairo or gdk_cairo_create(). I can see 2 different ways of dealing with this API removal. To reuse as much existing code as possible, you can create cairo_image_surface_t, let poppler render your page there using poppler_page_render() and write your own function that will convert between cairo_image_surface_t and GdkPixbuf. Another way would involve replacing GtkImage widget with GtkDrawingArea and drawing your page directly from expose-event/draw signal handler. Details will depend on whether you'll use GTK+-2 or GTK+-3. Cheers, Tadej -- Tadej Borovšak blog.borovsak.si tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: GtkDrawingArea size
Hello.
2012/3/7 Christopher Howard christopher.how...@frigidcode.com:
Hello again. So, I recently started a project to create a certain board
game (in C) using gtk+, and I just started learning gtk+. I was planning
to draw the board graphics, pieces, etc. all into one GtkDrawingArea.
So, how do I fix the size of the drawing area so it doesn't get larger
or smaller than my graphics?
I would add a wrapper GtkAlignment around my drawing area, set it's
xalign and yalign propertes to 0.5, it's xscale and yscale to 0, pack
GtkDrawingArea inside it and fix it's size using
gtk_window_set_size_request().
Have a look at this simple app:
#include gtk/gtk.h
#define WIDTH 300
#define HEIGHT 400
static gboolean
cb_draw (GtkWidget *w,
GdkEventExpose *e)
{
cairo_t *cr = gdk_cairo_create (e-window);
cairo_set_source_rgb (cr, 1.0, 1.0, 0.0);
cairo_paint (cr);
cairo_destroy (cr);
return TRUE;
}
int
main (intargc,
char **argv)
{
GtkWidget *window,
*align,
*area;
gtk_init (argc, argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
g_signal_connect (window, destroy, gtk_main_quit, NULL);
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_container_add (GTK_CONTAINER (window), align);
area = gtk_drawing_area_new ();
gtk_widget_set_size_request (area, WIDTH, HEIGHT);
g_signal_connect (area, expose-event, G_CALLBACK (cb_draw), NULL);
gtk_container_add (GTK_CONTAINER (align), area);
gtk_widget_show_all (window);
gtk_main ();
return 0;
}
Cheers,
Tadej
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Re: Where is GStatBuf ?
Hello. 'GStatBuf' is supposed to be typedef'd somewhere to ensure that the correct 'stat' struct gets used, depending on the compiler and platform - but I can't find GStatBuf anywhere. git grep GStatBuf says GStatBuf is defined in glib/gstdio.h Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Where is GStatBuf ?
Hi. Thanks Tadej. I must admit, it's not in my copy or any copy I can find on the internet (though admittedly, most of them look quite out of date). Could you post a link to the current repo please? Here is the link to current head in git: http://git.gnome.org/browse/glib/tree/glib/gstdio.h#n32 Quickly looking at the log revealed that it's been almost 2 years since this file has been changed significantly for the last time, so your version should have the same file. BTW, on disk, this header is probably located under /usr/include/glib-2.0/glib/gstdio.h Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: HELP/About was :: [Re: suggestions on user config?]
Hi the dialoh has a Close button in the lower right. In the lower left are two buttons. one is labeled Credits; next to it is a button labeled License that displays the GNU copyright. can somebody clue me in on how to add the two buttons s on the lower left? I don't have GNOME installed here, but my guess would be that you're looking at the stock GtkAboutDialog, which is part of the GTK+. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: window icon resolution
Hi. When I call gdk_pixbuf_new_from_file() to set a window icon, the resulting image in the Gnome Shell ALT+TAB switcher is fuzzy and clearly low-resolution. The window icon is a 128x128 pixel 24-bit PNG file. When I have the file displayed in another viewer (eog) and ALT+TAB, the Gnome Shell image is smaller than the full image in eog, but clearly fuzzier and lower resolution. Other applications such as Pidgin, Firefox, or Geany display clear, high-resolution icons. What am I doing wrong that other applications are doing right? I checked the Geany source and saw it had inlined the GdkPixbuf image and loaded it that way. Why would that make a difference? Not an expert, but my guess would be that gnome-shell loads images on it's own based on what is defined in your .desktop file when this file is available. Do you install this file for your app? Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Box packing vs table packing
Hi. A (maybe not so) simple question: why should I use one style of packing instead of the other? I fail to see the problem here. If you have your widgets arranged is some kind of grid, use GtkTable, otherwise GtkBox. Also, if you're using GTK+-3.x, you can also use GtkGrid[1], which supports both of styles of packing with proper support for height-for-width geometry. Cheers, Tadej [1] http://developer.gnome.org/gtk3/stable/GtkGrid.html -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: combo box trouble
Hello. If however I click on the arrow of the populated combobox, the popup doesn't show any text. No signals are emitted either. I have a feeling that I am missing something simple... You're missing a display component of combo box: GtkCellRenderer. You must either pack it inside combo box in Glade or do it manually from code. Cheers, Tadej -- Tadej Borovšak 00386 (0)40 613 131 tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: gtk_tree_view_column_set_cell_data_func gives GTK-CRITICAL error
Hi. 2011/11/30 James Steward jamesstew...@optusnet.com.au: col = gtk_tree_view_insert_column_with_attributes ( GTK_TREE_VIEW (view), -1, Title, renderer, text, i, strikethrough, j, background, k, background-set, TRUE, NULL); gtk_tree_view_column_set_cell_data_func( gtk_tree_view_get_column(GTK_TREE_VIEW(view), col), renderer, render_float, GINT_TO_POINTER(i), NULL); IIRC, gtk_tree_view_insert_column_with_attributes() returns number of columns and gtk_tree_view_get_column() expects to get column number where first column is 0. So you may be off-by-one in your call to gtk_tree_view_column_set_cell_data_func(). Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: IconView select_path inactive selection
Hi. using IconView select_path(...), how can I make it look like it was selected by clicking on it, i.e. not in that inactive grey color? [1] Did you try using this: http://developer.gnome.org/gtk/stable/GtkIconView.html#gtk-icon-view-set-cursor Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Re: HScale don't move
Hi. I changed both page size and page increment to 0, and the slider moves. However, why I get an initial value of 0, instead of 5? Make sure your value is defined after lower and upper, otherwise it may be clamped to something unexpected. BTW, what version of glade are you using? Recent versions produce GtkAdjustment's properties in proper order. -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: HScale don't move
Hi. object class=GtkAdjustment id=adj_assign property name=value5/property property name=upper10/property property name=step_increment0.10001/property property name=page_increment10/property property name=page_size10/property /object page-size property of GtkAdjustment should be set to 0 when not being used with scrollbars. value property of GtkAdjustment is confined to interval [lower, upper - page_size], which in your case is only single value 0. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: make file command not working
Hi. 2011/7/27 Shashank Gudipati sgsha...@gmail.com: this is after the ./configure -prefix=/opt/gtk Configure command should be: ./configure --prefix=/opt/gtk Does that fix anything? -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Does g_key_file_free() free pointers from g_key_file_get_string()?
Hello. Since the documentation says it's a newly allocated string, I have always freed the string when I no longer need it. This hasn't produced any ill effects so far. Usually, valgrind will catch problems related to freeing pointers to non-heap memory. Another indicator that returned value should be freed is lack of const modifier on return value. If API docs state: const char * get_something () - do not free result char * get_another_thing () - free result Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Window styles
Hi. Incidentally (sorry for the dumb questions but my background is mostly with MFC) - is it possible to set a GTK+ window to be always on top? See gtk_window_set_transient_for() function. I think it'll do what you need to be done. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Scrolling Problems with a Floating Widget
Hello. I have done what you said, however the issue is that the TreeView, despite the setting of a size request of (0, 0) is not scrolled, it just takes up all the space and can't be resized, (screenshot here) http://i.imgur.com/mzrnc.png I tested this and you're right: when linked against GTK+-3.0, treeview ignores set size request. I also linked your sample app with GTK+-2.0 and things work as expected. How can I make it so that the TreeView does not do this, so that it can be scrolled? (Code is at the end) Maybe someone that is familiar with GtkSizeRequest interface/GtkTreeView can help here? Additionaly, could this be considered a regression in GTK itself? Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Scrolling Problems with a Floating Widget
Hi. So I gathered that I had to use my own GtkHScrollbar and GtkVScrollbar, like so http://whyareyoureadingthisurl.files.wordpress.com/2011/02/layout.png However I cannot get this working in GTK3. Can someone point me to an example, or simply explain the different components in how this can be achieved, so I can try to get it working? I haven't tested this, but steps that you probably need to take are: 1. create widget hierarchy 2. set some sensible minimal size on your GtkTreeView 3. interconnect scrollbars with tree view by sharing adjustments Minimal size can be set using gtk_widget_set_size_request() and adjustment sharing can be achieved using getters for scrollbars and gtk_widget_set_scroll_adjustments(). Hope this helps a bit. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: get_name returns name of the widget not the instance
Hello. This happens because GtkBuilder doesn't set name property of the widget to id property in glade file anymore (I think GTK+-2.20 introduced this change). Your code probably needs to be updated from this (it's been a while since I coded for the last time, so take my advice with a grain of salt): $name = $object-get_name (); to $name = $object-Gtk2::Buildable::get_name (); Or, you can set name property of the widget to it's id in Glade. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-perl-list mailing list gtk-perl-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-perl-list
Re: GSource object lifetime
Hi. I'm repetitively calling g_idle_source_new(), g_source_set_callback(), g_source_attach() to get an idle callback to run in a separate thread. The callback in question always exits with FALSE. Do you call g_source_unref() after attaching it? Cheers, Tadej. -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GSource object lifetime
Hi. That did help (I think I still have an unrelated leak). I think a few things could be made more clear in the docs (I'm not 100% sure I'm correct either): I must agree with you here. Docs are a bit scarce on this topic. But ... -A newly created source (from g_idle_source_new() ) has a reference count of 1 not 0. -g_source_attach() increases the reference count by 1 -returning FALSE in a source callback function detaches the source from the source's attached main context, and decreases the reference count by 1 -Once a source has been detached by source callback function returning FALSE, it can not be reattached g_source_attach(). An assertion error is thrown. You can however, decrease the source's reference count down to 0 so it will free itself, then create a fresh source. You got it exactly right. I would only add that you decrease reference count right after attaching it to context (like Colomban already suggested). This way memory used by source will be freed when detached from context. All that being said, maybe you could cook up a patch for API docs with this info? I'm sure people would find it useful. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Weird RadioButton behaviour
Hi. I have an application on which a group of RadioButtons select the control mode. The modes that are not in control show the current reading, while the in control has a SpinButton. To do this widget switching I have hooked up to the signal_toggled and signal_clicked of the RadioButtons and in the handler I check the get_state() value. This works fine when I click on the radio buttons with the mouse. The callback is invoked four times; twice on the old selection with the get_state returning false, then twice on the new with get_state() true. I don't know which order the clicked and toggled signals occur but it doesn't really matter. I am slightly surprised that I get two events on the old button - I haven't clicked it, after all. I did have similar troubles quite some time ago. IIRC, the problems were caused by the fact that GtkButton::clicked is an action signal that gets emitted quite a lot by GTK+ itself. It's been a while since I last looked at GTK+'s sources, but I think that chain of events/signals that lead to observed behavior is: Clicking with a mouse: GtkToggleButton::button-released - GtkButton::clicked - GtkToggleButton::toggled Not sure what would chain for keyboard navigation be, but I'm almost sure that state change is done via GtkButton::clicked signal. The problem is when I use the cursor keys to change button. Most times it works the same, but often (and it seems to usually be most times I move away from a particular button) the two signals sent by the leaving button happen with its get_state() still returning true. Presumably this is a race condition of some sort, but why is it so consistently problematic on keyboard actions and never on mouse? Is there a better way to do the whole thing? Why do you connect to both GtkButton::clicked and GtkToggleButton::toggled signals? It would probably be better to only connect to toggled one. Hope this helps a bit, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: 2 callbacks to same event
Hello. What do you return from your callbacks? If you return TRUE, event is considered handled and no other callback is called from there on. Try returning FALSE from your callbacks and I'm almost sure things will work. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Timer start registration breaks the gtk_main()
Hello.
int main()
{
CFrame *frame = new CFrame();
result = frame-OpenPort();
if( !result )
return 1;
else
{
g_timer_add_seconds( 1, (GSourceFunc) frame-ReadData(), NULL );
gtk_widget_show( window );
frame-ReadData();
gtk_main();
}
}
Where is your gtk_init() call?
Cheers,
Tadej
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Re: GOption friends
Hello. Maybe those git pages are not searched by google? In fact I just randomly picked a (one line) literal text from the Changelog in git - and google didn't find it (did find two instances in mailing list copies, but not the one in git). So, one of the most important sources for info isn't accessible to google it seems. (to be fair, bing.com doesn't find it either) I usually use Google's Code Search (http://www.google.com/codesearch) when hunting for example code. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK MenuShell Nested Menu's
Hello. I'm trying to nest a menu using menu_shell, GtkWidget *tray_menu; GtkWidget *child_menu; tray_menu = gtk_menu_new (); child_menu = gtk_menu_new (); gtk_menu_shell_append(GTK_MENU_SHELL(tray_menu), child_menu); but i get an error: Gtk-CRITICAL **: gtk_menu_shell_insert: assertion `GTK_IS_MENU_ITEM (child)' failed so i guess my question is, how do i set one menu to be another menu's child? You need to attach submenu to GtkMenuItem. Something like this: GtkWidget *menu, *submenu, *item; menu = gtk_menu_new (); item = gtk_menu_item_new_with_label (Submenu); gtk_menu_shell_append (GTK_MENU_SHELL (menu), item); submenu = gtk_menu_new (); gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), submenu); Cheers, Tadej -- Tadej Borovšak 00386 (0)40 613 131 tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
RE: GtkSwitch — lack of specific signal
Hello. I checked. notify::active is not mentioned anywhere in any of those! (I used my browser's find - can you find it mentioned somewhere?) Cheers, John Lumby Those two links were just examples that demonstrate how signal handler's prototype can be obtained. Notify signal is part of GObject. When searching for a signals that are relevant to particula widget, you start by examining signals listed in widget's API docs, after those signals you inspect signals of it's parent, ... (API docs for each widget have a section named Object Hierarchy that lists relationships of objects). I would suggest that you install Devhelp and -doc packages of GTK/GLib/Cairo to make your life a bit easier. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
RE: GtkSwitch — lack of specific signal
Hello.
Thanks both. I tried notify::active and it works as well as event-after
but still the data pointer argument is bad on entry to the callback(it's not
zero but not a valid GTK_WIDGET either). I don't know why - maybe
something related to GtkSwitch or maybe a mistake in my code somewhere.
Cheers, John Lumby
Are you sure your functions has the right prototype? GObject::notify
signal handlers should have callbacks defined like this:
void
notify_callback (GObject*obj,
GParamSpec *pspec,
gpointer *data)
{
/* La la la */
}
Cheers,
Tadej
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Re: Drawing area with different layers
Hello. I'm new to gtk programming so this might be a very dummy question. I use a DrawingArea to draw a map with three layers: the background map, the legend window, and app data. Since the legend layer does not change often, can I store it in a pixmap and simply copy it rather than redraw it every time the map and app data change? I would suggest that you use cairo to do all of the drawing. Then you can store your drawings onto cairo surface and paint it when needed. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: configure_event behavior
Hello. What I should to do for changing this behaviour? I want that content automatically fits window with signal configure_event handler assigned. Try returning FALSE from configure-event signal handler. I'm almost sure this will fix your problem. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-perl-list mailing list gtk-perl-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-perl-list
Re: g_spawn_async_with_pipes
Hi. Well yes, it is simpler. And, you are correct, it is awkward. I just had this vision of two g_spawn_async_with_pipes() hooked together. Running echo output echo_out directly into lilypond's input echo_out as if they may share echo_out. I will need to test/hack this. I hate hacking. I wish we had more examples here in linux land! I just thought it would be more efficient and quicker to send data directly to lilypond instead of a file location. Since you're already using g_spawn_async_with_pipes(), why don't you simply execute /usr/bin/lilypond --output=scale.png - and then feed the lilyponds stdin through obtained file descriptor that g_spawn...() gives you? Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Issues with Gtk2 dialogs and UTF8 data.
Hello.
I'm almost sure your troubles are not GTK+ related. You'll find some
test code below that works fine for me (just put some UTF-8 encoded
text into sample.txt file).
Code
#!/usr/bin/env perl
use strict;
use warnings;
use Glib qw(TRUE FALSE);
use Gtk2;
Gtk2-init();
my $window = Gtk2::Window-new ('toplevel');
$window-signal_connect (delete_event = sub { Gtk2-main_quit(); });
$window-set_border_width (10);
my $input;
open $input, '', 'sample.txt';
binmode $input, ':utf8';
my $label = Gtk2::Label-new ($input);
$window-add ($label);
$window-show_all();
Gtk2-main();
/Code
BTW, talking about unicode data is not really helpful. In most
cases, this means xxx-encoded text, where xxx is one of the UTF-8,
UTF-16le, UTF-16be ..., and you should state this explicitly.
Cheers,
Tadej
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Re: Signals received twice
Hello. I'm using GtkFileChooserButton and connecting to selection-changed signal and the issue is that when i changed the selected fodler in the widget, I'm getting the signal 4 or 5 times repeatedly. And I think that should happens just one, Am I right ? No, GtkFileChooser::selection-changed signal gets emitted for every change of selection in file selection dialog. You should probably use GtkFileChooserButton::file-set signal in your application. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: GTK and color names
Hello. I think gdk_color_parse() function is what you're looking for. But be aware that this function will return 16-bit RGB components (not the usual 8-bit ones). Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Mixing GLib and system file name encoding
Hello. - convert the names from the list to GLib encoding (UTF-8) and combine it with the directory name of the list file and use g_fopen() to open the files You can use g_locale_to_utf8() to convert names in the list to UTF-8, which can then be fed along with base directory to g_build_filename() or something similar and opened using g_fopen(). - convert the directory name of the list file from GLib encoding to the system encoding and use fopen() to open the other files g_locale_from_utf8() can be used to convert base path to system encoding. After that you can concatenate it with filename from your list and open it using fopen(). Note that both methods will only work if your input file is indeed encoded in system locale. If your file originates from other system that uses different locale, you're basically screwed. Hope this helps a bit. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: comboboxentry assertion `GTK_IS_CELL_RENDERER (cell)' issue
Hi.
You're mixing simple, text-only version API of GtkCOmboBoxEntry with
complex one. Since you only need to show text, simple method should do
for you, but unfortunately, you cannot construct that type of combo
box using glade.
When dealing with GtkComboBoxEntry, you need to keep in mind that
there is always one GtkCellRendererText present. I fixed your code
that should work for you:
$color_centry1= $builder-get_object('comboboxentry1');
my $model3 = new Gtk2::ListStore('Glib::String');
my @listing_centry1 = qw/red blue purple yellow black/;
foreach $text (@listing_centry1) {
my $iter = $model3-append ();
$model3-set ($iter, 0, $text);
}
$color_centry1-set_model($model3);
$color_centry1-set_text_column (0); # this line is generating the error
message
$color_centry1-set_active(0);
Cheers,
Tadej
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Re: Simple way to list keys values of a GHashTable object?
Hi.
For simple printout, you may be interested in g_hash_table_foreach().
Something like this should dump key-value pairs to console (I assumed
here that both key and value are strings):
===
static void
dump_pair (const char *key,
const char *value)
{
g_print (Key: %s Value: %s\n, key, value);
}
...
g_hash_table_foreach (table, (GHFunc)dump_pair, NULL);
===
Cheers,
Tadej
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Re: g_int64_hash can not be found
Hello. g_int64_hash() has been introduced in GLib-2.22. Is your GLib recent enough? Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: g_int64_hash can not be found
Hi. How to check glib version from command line? pkg-config --modversion glib-2.0 Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: howto compare two GTypes
Hi.
Not sure why your code doesn't work, since it looks clean to me. Maybe
you have an error somewhere else in your code?
I also quickly created compilable sample that demos type comparison:
-
#include gtk/gtk.h
int
main (intargc,
char **argv)
{
GList *list = NULL,
*iter;
GType type;
gtk_init (argc, argv);
list = g_list_prepend (list, gtk_window_new (GTK_WINDOW_TOPLEVEL));
list = g_list_prepend (list, gtk_button_new ());
list = g_list_prepend (list, gtk_label_new (Label));
type = GTK_TYPE_LABEL;
for (iter = list; iter; iter = g_list_next (iter))
if (G_OBJECT_TYPE (iter-data) == type)
g_print (Match found\n);
else
g_print (No match\n);
return 0;
}
-
Tadej
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Re: Writable array returned from gtk_tree_path_get_indices()
Hi. 2010/10/7 Stef Walter stef-l...@memberwebs.com: Is the integer array returned from gtk_tree_path_get_indices() writable by design? Or should it be treated as readonly? You should definitely not modify values in returned array, since this central part of GtkTreePath. Currently, modifying parts of this array is the same as moving your path using gtk_tree_path_(next|prev)(), but if internal structure of GtkTreePath changes, you'll be in trouble. Some stuff like GtkTreeModelSort and GtkTreeModelFilter write to this index array, but those may be liberties taken by gtk+ internally. Quickly looking at the code I would say that this is indeed the case here. Directly modifying values avoids some type checking, which speeds up some of the operations. Perhaps we would change the return values for the following to 'const gint*': gtk_tree_path_get_indices () gtk_tree_path_get_indices_with_depth () If not by design, I'll file a bug, and patch. I think that minimal thing to do here is to update docs to something like this: Returns the current indices of path. This is an array of integers, each representing a node in a tree. This value should not be freed and members of array should not be modified. Filling a bug is definitely the way to go IMHO. Cheers, Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: really freeing the memory allocated by g_slist
Hi. 2010/10/7 Márcio Ricardo Pivello pive...@gmail.com: Hi all. I use a library called GTS for computational geometry tasks, and it is heavily based on GLib data structures. Specifically, in _many_ occasions it returns a GSList* containing vertices, edges and so on, which you use and then delete with g_slist_free( ). In my work, during a transient simulation this kind of operation occurs at least tens of millions of times. Since g_slist_free( ) does not actually deallocates the memory used by the list, my program always ends consuming all available memory during the simulation (8 GB, when it should use just 10% of that). I don't think g_slist_free() is problematic here. My guess would be that you're not freeing your data that is pointed to by list elements. g_slist_free() will only free memory that is used by GSList structs, data that is pointed to by data member of GSList structure needs to be freed separately. For example, take gtk_icon_view_get_selected_items() func. Usual usage is: GSList *items = gtk_icon_view_get_selected_items (icon_view); /* Do something here */ g_slist_foreach (items, (GFunc)gtk_tree_path_free, NULL); g_slist_free (items); The important line is g_slist_foreach() line, where actual data that is pointed to by nodes is freed. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: cairo functions too use instead of gdk ones
Hi. Replacements would probably look like this: gdk_gc_new cairo_create() or gdk_cairo_create() if you're using GTK+ gdk_gc_set_foreground cairo_set_source_rgb() or gdk_cairo_set_source_color() gdk_pixmap_create_from_xpm This last one is a bit tricky, since you should not use GdkPixmaps anymore. For equivalent result, you'll need to - create new cairo surface that will serve as a replacement for GdkPixmap - load XPM into GdkPixbuf - paint that pixbuf onto your new surface Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: why is GtkOptionMenu deprecated?
Hi. Hi, I really need something like GtkOptionMenu where you can pack widgets in a GtkMenu and make a choice. If I has to write it myself, could someone tell me why it has been deprecated, please? API docs clearly state that GtkOptionMenu has been replaced by GtkComboBoxEntry. There is even a migration guide available. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Doubt about button_press_event and drag and drop
Hi. First, signal handler for GtkWidget::button-press-event should return gboolean value, not void. This return value is then used to determine if the event should be propagated further or not. If you return FALSE from your signal handler, you indicate that you haven't handled the event and event is propagated further. If you return TRUE, event is considered handled and chain stops here. As for your problem, try returning FALSE from your signal handler and see what happens. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Widget name is 0x0 after GtkWidget key-press-event
Hi. Your problems are caused by the fact that GtkBuilder since GTK+-2.20 doesn't set widget's name property to id field anymore. API docs[1] warn about this change (see the first Note section in description). Tadej [1] http://library.gnome.org/devel/gtk/stable/GtkBuilder.html#GtkBuilder.description -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkIconView remove item
Hi.
You need to remove the data from underlying model and your icon view
will get updated automatically.
Sample code that is capable of removing multiple items at a time would
look like this:
--
GtkIconView *icon_view;
GtkListStore *store;
GList*elements,
*iter;
/* Initialize icon_view here */
elements = gtk_icon_view_get_selected_items (icon_view);
/* Convert to row references for safe removal */
for (iter = elements; iter; iter = g_list_next (iter))
{
GtkTreeRowReference *ref;
GtkTreePath *path = (GtkTreePath *)iter-data;
ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (store), path);
gtk_tree_path_free (path);
iter-data = ref;
}
/* Remove now */
for (iter = elements; iter; iter = g_list_next (iter))
{
GtkTreeRowReference *ref = (GtkTreeRowReference *)iter-data;
GtkTreePath *path;
GtkTreeIter remove_me;
path = gtk_tree_row_reference_get_path (ref);
gtk_tree_model_get_iter (GTK_TREE_MODEL (store), remove_me, path);
gtk_tree_path_free (path);
gtk_list_store_remove (store, remove_me);
gtk_tree_row_reference_free (ref);
}
g_list_free (elements);
-
Tadej
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Re: how to read Gtk signal document ?
Hi. What is [1] you mentioned ? Heh, I forgot to paste a link;) [1] http://library.gnome.org/devel/gobject/stable/gobject-Signals.html#GSignalFlags Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: OpenGL drawing to widget actually draws in the whole window
Hi. GTK+-2.18 introduced client-side windows, which means that not all GdkWindows are now backed with native window. The only GdkWindow that is always backed by native window is applicaition's toplevel window. This probably explains why your drawing would end-up on the toplevel. It is possible to set GDK_NATIVE_WINDOWS env variable, in which case all GdkWindows will be native windows like in GTK+2.18. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: how to read Gtk signal document ?
Hi. For exact explanation, see [1]. You'll probably also want to read more about GObject and signals after that;) But for end user (programmer), knowing that signals in docs that are marked as Run first will run default signal handler before any user supplied one. Run last will run default signal handler after user provided signal handlers. Action signals can be freely emitted from your code and most of them have a wrapper function (for example, gtk_button_clicked (button) is equivalent to g_signal_emit_by_name (button, clicked)). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK+ 2.20.0 Make Install Problem
Hi. I'm having exactly the same problems on my machine when using jhbuild to build GTK+3. As a workaround, I simply set LD_PRELOAD env variable before compiling/installing. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Syntax highlight in GtkDoc
Hi. Your markup is just fine, maybe your gtk-doc is too old to highlight the examples? I think you'll need gtk-doc-1.14 for highlighted examples. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Syntax highlight in GtkDoc
Hi. I'm using GtkDoc 1.4, which is the default version for Ubuntu 10.04 Maybe there is a flag that must be set into the Makefile.am? There is no such switch AFAIK. Code should be made pretty by default. I think someone even asked how would one go about disabling this, but it's been a while since then. Did you try generation any other docs apart yours? Are those pretty or plain? Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Question concerning forced expose-events
Hi. Are you using threads in your application? Problems like this usually arise when you don't initialize GLib/GDK thread subsystems. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK deadlock in gtk_main
Hi. You're having troubles because gtk_main_iteration_do() does it's own unlock/lock cycle. When your idle callback is executed, your mutex is unlocked. gtk_main_iteration_do() unlocks it again, executes whatever is there to be executed and locks it. Now control returns back to main loop, which tries to lock mutex and here you have your lock. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK deadlock in gtk_main
Hi. So what you suggest is to have gdk_threads_enter and gdk_threads_leave at the beginning and at the end of the idle function? Is this really intended? Yes, this is how things should be done. But for your convenience, GDK provides a function that will wrap your idle callback in lock/unlock: gdk_threads_add_idle(). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: fetch and display data in the form of a table
Hi. I tried the gtkclist and it worked well.. GtkCList is one of the widgets that is not part of GTK+-3 (and is not maintained in 2.x). Use GtkTreeView like Jeff already suggested. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: how to implement my own window decoration
Hi Window decorations are currently managed by window manager. There is a branch of GTK+ where decorations would be managed by application itself (this is called client-side decorations). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GtkRange API is incomplete
Hi. Can't you just connect to two different signal handlers one for the update and one for the undo stack? There is only one signal (GtkRange::value-changed) available. Unfortunately, GtkRange's internals are one huge pile of ... and adding another signal would not be that easy. Maybe you can combine all ::value-changed signal emission in certain time interval into one undo action? Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: GtkRange API is incomplete
Hi again. Hi there, You can just connect to the GtkRange's GtkAdjustment value-changed signal for the view update. This will not work, because delayed emission of GtkRange::value-changed signal is implemented by delaying emission of GtkAdjustment::value-changed. You can connect to either of those signals, end result is exactly the same (GtkRange::value-changed is emitted in signal handler for GtkAdjustment::value-changed). BTW, implementing delayed emission properly inside GtkRange would also make it possible to hide public fields from GtkAdjustment. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: image printing
Hi. You need to unref your pixbuf only after it has been rendererd to cairo context, since GList will not take ownership of it. Call _unref() just after cairo_paint() call and you should be fine. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Query on Multiple row selection in a GtkTreeView
Hi. I think that returning TRUE from your button-press-event handler should fix this. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: How to add a mouse pressed event to GtkLabel
Hi. GtkLabel doesn't have it's own GdkWindow and thus cannor react to button presses. You can wrap it inside GtkEventBox and connect to button-press-event on it. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Why GtkFontSelectionDialog doesn't implements GtkFontSelection?
Hi. Unstable here means that it maybe will not be part of stable version of GTK+ or that it will be part of a stable version and is just on a beta version? Unstable means it'll be part of next GTK+ release, due to be out in October 2010. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Screen resolution
Hi. Can I tell how many monitors span the screen horizontally and vertically? I've found a function called get_screen_n_monitors() but if it returned (say) 4 monitors, would it be possible to tell if they were in a 2x2 array or a 4x1 array? You can get the layout of monitors by inspecting their geometry (x and y coordinates). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Screen resolution
Hi. Suppose I have two monitors, each of resolution 1024x768. The monitors are placed side-by-side to cover a total screen size of 2048x768. I have a GdkWindow of some description situated at co-ordinates 900 pixels (x) and 0 pixels (y). If the window is (say) 600x600 pixels, it's bounding rectangle should return 900,0,600,600 Is gdk_window_get_frame_extents() the correct way to retrieve this info? I don't seem to be able to find much information about it. I would probably use gdk_window_get_origin() and gdk_drawable_get_size() to obtain the geometry of the window, since _get_frame_extents() may include window manager decorations if they are present. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Screen resolution
Hi. Thanks Tadej. I looked at gdk_window_get_origin() but it seems to return x and y co-ordinates relative to the parent window. What I'm trying to find out is which monitor contains (or mostly contains) a given window. Therefore I need the screen co-ordinates. I'll try get_frame_extents() and see what happens. I just found its library description and it looks promising. From API docs about gdk_window_get_origin(): --- Obtains the position of a window in root window coordinates. (Compare with gdk_window_get_position() and gdk_window_get_geometry() which return the position of a window relative to its parent window.) --- Did you test it and it gave some strange results? Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: custom widgets - advice on where to start?
Hello. I usually encapsulate my code into custom widgets when: - I need my widget in lots of places - I need my construct to emit signals As long as code is small and relatively clean, I simply use GtkDrawingArea and draw onto it from ::expose-event handler. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Error compiling XInput2 support for GTK+...
Hi. This error is probably caused by removal of gdk-pixbuf from GTK+ (it is now a standalone library). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Error compiling XInput2 support for GTK+...
Hello. So, how do I get the build going again? Is this a bug to be reported? Not sure exactly what should be done here. GTK+ from git master has been already adapted to this change, so having a experimental branch borked doesn't deserve a bug report. You can try fixing this branch yourself or wait for Garnacho do come around and fix it. BTW, is this branch actively maintained? IIRC, parts of xi2 branch have already been merged into master. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Treeview, start editing with any Key, not just Enter or space
Hello. You'll probably need to connect to GtkWidget::key-press-event signal and initiate editing from there using gtk_tree_view_set_cursor_on_cell() function. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Treeview, different Cell-render per row
Hi. My other Idea was to make a new column for the GtkCellRendererToggle, and just show it when needed. Is it possible to hide a one of the renderer? This is how I would do this. Just add one gboolean column to your data store and connect it to cell renderer's visible property. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Implementing my own ScrolledWindow
Hello. How can I make it not expand? You cannot do that with GtkTable, since table will always grant all the space GtkTextView requested. I see two possible solutions here: write GtkScrolledWindow-like widget from scratch (with all the scrollbar positioning, ...) or create simple wrapper widget that will underallocate your text view and place that into a table. Second solution is probably easier to implement, but first one is more flexible. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GTK/GDK equivalent to UpdateWindow() ?
Hi. But how/where do I acquire a pointer to the canvas's GdkWindow?? gtk_widget_get_window() function is probably what you're looking for. Call this on your canvas and then force updates on it. I'm not sure how this is called in gtkmm though, but I'm sure you'll be able to find it. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: GdkDrawingArea on the GtkImage
Hello. How can i impose GdkDrawingArea on the GtkImage for painting on image for example? Why don't you simply draw your image onto drawing area too? No need for layered widgets here. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: gtk_action_block_activate fails to block ?!?
Hi. API docs state that this function is only intended to be called when manually modifying state of action's proxy and this modification could cause recursion. In reality, gtk_action_block_activate() simply causes gtk_action_activate() function calls to be ignored. There is no way to stop signal from being emitted when modifying action directly. You'll need to block signal handlers that are connected to this signal in order to avoid calling them. You may find g_signal_handlers_block* family of functions useful here. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
Re: Why GtkFontSelectionDialog doesn't implements GtkFontSelection?
Hi. I was reading the documentation of the GtkFontSelectionDialog and see that it implements own methods to set and get the GtkFontSelection properties. Why it is at this way? Isn't more correct and standard use methods of GtkFontSelection just casting with GTK_FONT_SELECTION() the font selection dialog? It may be tempting to simply cast GtkFontSelectionDialog to GtkFontSelection since GtkFileChooserDialog and GtkFileChooser work like this, but there is one major difference: GtkFileChooser is an interface that widgets can implement while GtkFontSelection is real widget, not an interface. It is possible to get font selection widget from font selection dialog using gtk_font_selection_dialog_get_font_selection() (one must like that name;), but you'll need unstable GTK+-2.22 for this function. There has been some work going on to bring font chooser widgets into 21st century, but nothing has come out of that yet (and I lost the link to the page with some mockups). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: dconf 0.4.1 is out
Hi. but since that's only needed for 'make dist' (or compiling directly from git) I guess it's okay for your embedded use case? Why do you need vala on make dist? But in general, yes: that would be ok. When using autotools with vala, end-user that only consumes application doesn't need to have vala installed, since generated C files are also distributed inside tarball. From user's perspective, distributed vala applications are just normal C applications. This is how normal flow looks like: .-. | .. valac .-. | compiler/linker .-. | | vala files | --- | C files | -- | app | | '' '-' | '-' | | | This is dstributed inside tarball. | '-' Tadej -- Tadej Borovšak 00386 (0)40 613 131 tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-devel-list mailing list gtk-devel-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-devel-list
Re: Use of Memory Slices in N-ary Trees
Hello. GLib uses slice allocator when allocating memory for new nodes which makes preallocation quite useless. Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
Re: Use of Memory Slices in N-ary Trees
Hi. Ah perfect! So you mean that when I create a new node using GNode it will automatically use g_slice_alloc behind the covers? Yes, nodes are allocated using g_slice_new0(GNode) (unless you have G_SLICE env variable set to always-malloc). Tadej -- Tadej Borovšak tadeboro.blogspot.com tadeb...@gmail.com tadej.borov...@gmail.com ___ gtk-list mailing list gtk-list@gnome.org http://mail.gnome.org/mailman/listinfo/gtk-list
