2011/10/19 Tristan Van Berkom <t...@gnome.org> > Note I spent a lot of time writing something like this last year. > > I would like to eventually port it into GTK+ as the internal implementation > of the GtkToolPalette. > > See: > http://git.gnome.org/browse/libegg/tree/libegg/wrapbox >
Thanks for answer! But in your example same problem! If you pack wrapbox directly in to frame (without scrolled_window) then, you can not change the height of the window to smaller than it was at the start. look at screenshots this is window after start http://imageshack.us/photo/my-images/847/testwrapbox1.png/ and this is http://imageshack.us/photo/my-images/696/testwrapbox.png/ after changing the width of the window, it should allow to reduce its height, because there are many free space, but it does not. With GTK3.0 i use little trick for that, i store maximum allowed width in private variable, and in function get_preferred_height_for_width i always calculate height not for minimum width but for stored width. There is how it looks like public override void get_preferred_height_for_width (int width,out int minimum_height, out int natural_height) { /*workaround for min_height, if actual available width more than self minimum width*/ if( this.minimum_width!=width || !(this.minimum_width==width && this.natural_width >= width) ){ this.natural_width=width; } this._get_preferred_height_for_width(this.natural_width,out minimum_height, out natural_height); this.natural_height = natural_height; } where this.natural_width is stored maximum width. Because get_preferred_height_for_width called several times , first time for minimum width, others for allocated width, and because while i resizing window, gtk always recalculate size , in gtk3.0 my window always have actual size. As i'm understand, problem appears because of the following changes in gtk container.c in GTK3.2 +typedef struct { + gint hfw; + gint wfh; +} RequestModeCount; + +static void +count_request_modes (GtkWidget *widget, + RequestModeCount *count) +{ + GtkSizeRequestMode mode = gtk_widget_get_request_mode (widget); + + switch (mode) + { + case GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH: + count->hfw++; + break; + case GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT: + count->wfh++; + break; + case GTK_SIZE_REQUEST_CONSTANT_SIZE: + default: + break; + } +} + +static GtkSizeRequestMode +gtk_container_get_request_mode (GtkWidget *widget) +{ + GtkContainer *container = GTK_CONTAINER (widget); + GtkContainerPrivate *priv = container->priv; + + /* Recalculate the request mode of the children by majority + * vote whenever the internal content changes */ + if (_gtk_widget_get_width_request_needed (widget) || + _gtk_widget_get_height_request_needed (widget)) + { + RequestModeCount count = { 0, 0 }; + + gtk_container_forall (container, (GtkCallback)count_request_modes, &count); + + if (!count.hfw && !count.wfh) + priv->request_mode = GTK_SIZE_REQUEST_CONSTANT_SIZE; + else + priv->request_mode = count.wfh > count.hfw ? + GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT : + GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH; + } + + return priv->request_mode; +} + so, container will recalculate it size only if if (_gtk_widget_get_width_request_needed (widget) || _gtk_widget_get_height_request_needed (widget)) because of that, my trick don't working with GTK 3.2, so, my question is, how to force the container/window to recalculate its size in gtk 3.2 ? i try to use set_size_request and queue_resize (for container and for window), but this functions don't help. I hope I have clearly described their thoughts. > Cheers, > -Tristan > > On Wed, Oct 19, 2011 at 3:09 PM, Denis Linvinus <linvi...@gmail.com> > wrote: > > Hi all, > > i'm writing new GtkContainer which allocate children, firstly > horizontally, > > then vertically. - HVBox. > > > > On gtk 3.0 it works without problems (with little trick), but with gtk > 3.2. > > window don't change height when container change, until i move mouse > above > > my container. > > > > My idea is that my container should use minimum space as possible, but > > enough to show all children. > > If available width not enough for children then container should increase > > height for second line, and so on. > > Something like multiline tabs in firefox. (children is a buttons) > > > > There is my sources http://pastebin.com/8qugyfqk (i use valac --pkg > gtk+-3.0 > > -C ./main.vala to compile) > > > > image with explanation of the problem > > http://imageshack.us/photo/my-images/508/resulte.png/ > > there is two control buttons (add, remove) in one VBox, all other buttons > > in my HVBox container. > > As you can see at last screenshot, i lost two buttons after resize window > on > > Gtk3.2, if i move mouse on buttons again then window will change it > height , > > so that the lost buttons will be visible. > > > > I'm check, problem is not in vala, i use generated *.c from ubuntu 11.10 > to > > compile on Ubuntu 11.04 without modifications, and it also works > correctly. > > > > May be someone know how to force window to recalculate size? > > Or some other method to resolve my problem? > > > > My system ubuntu 11.10 > > libgtk-3-0 3.2.0-0ubuntu3 > > > > Ubuntu 11.04 for Gtk 3.0 > > libgtk-3-0 3.0.8-0ubuntu1 > > > > I will appreciate for any help. > > p.s. sorry for my English. > > > > > > _______________________________________________ > > gtk-list mailing list > > gtk-list@gnome.org > > http://mail.gnome.org/mailman/listinfo/gtk-list > > > > >
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