Re: GtkD - how to list 0..100K strings
Continuing this in the GtkD mailing list: https://forum.gtkd.org/groups/GtkD/thread/1370/
Re: GtkD - how to list 0..100K strings
On Tuesday, 28 April 2020 at 18:46:18 UTC, Kagamin wrote:
Try this:
void populate(NameAndDescription[] namesAndDescriptions) {
if(namesAndDescriptions.length>100)namesAndDescriptions=namesAndDescriptions[0..100];
innerView.viewData.populate(namesAndDescriptions);
}
I tried that and it worked fine. So I then used a binary chop and
discovered that 0..n where n <= 1170 works fine; n > 1170 crashes.
I'm not sure where that takes me but seems suggestive that the
problem is Gtk or GtkD rather than my code?
Re: GtkD - how to list 0..100K strings [solved]
On Monday, 27 April 2020 at 10:28:04 UTC, mark wrote:
I renamed the class shown in my previous post from View to
InnerView, then created a new View class:
class View : ScrolledWindow {
import qtrac.debfind.modelutil: NameAndDescription;
InnerView innerView;
this() {
super();
innerView = new InnerView;
addWithViewport(innerView);
}
void clear() {
innerView.viewData.clear;
}
void populate(NameAndDescription[] namesAndDescriptions) {
innerView.viewData.populate(namesAndDescriptions);
}
}
Try this:
void populate(NameAndDescription[] namesAndDescriptions) {
if(namesAndDescriptions.length>100)namesAndDescriptions=namesAndDescriptions[0..100];
innerView.viewData.populate(namesAndDescriptions);
}
Re: GtkD - how to list 0..100K strings: new problem
With the new code if I have 1000s of rows I get this error: (DebFind:8087): Gdk-ERROR **: 11:50:46.787: The program 'DebFind' received an X Window System error. This probably reflects a bug in the program. The error was 'BadAlloc (insufficient resources for operation)'. (Details: serial 8810 error_code 11 request_code 130 (MIT-SHM) minor_code 5) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) Program exited with code -5 This means the program is unusable (again) because there are often queries that result in 1000s of rows of results.
Re: GtkD - how to list 0..100K strings [solved]
I renamed the class shown in my previous post from View to
InnerView, then created a new View class:
class View : ScrolledWindow {
import qtrac.debfind.modelutil: NameAndDescription;
InnerView innerView;
this() {
super();
innerView = new InnerView;
addWithViewport(innerView);
}
void clear() {
innerView.viewData.clear;
}
void populate(NameAndDescription[] namesAndDescriptions) {
innerView.viewData.populate(namesAndDescriptions);
}
}
Re: GtkD - how to list 0..100K strings
I've now got it to work but it is unusable!
It can show small numbers of rows with no problem.
However, if it has to show 100s of rows it expands the tree
vertically way beyond the bottom of the screen and is impossible
to navigate.
However, if it has to show 1000s of rows it goes into an infinite
loop producing endless error messages:
(DebFind:6615): Gtk-WARNING **: 10:57:04.275: infinite
surface size not supported
I suppose I was expecting scrollbars to appear, but maybe with
Gtk you have do add them separately?
// Here's the view I'm now using
class View : TreeView {
import gtk.CellRendererText: CellRendererText;
import gtk.TreeViewColumn: TreeViewColumn;
import qtrac.debfind.modelutil: NameAndDescription;
import qtrac.debfind.viewdata: ViewData;
ViewData viewData;
TreeViewColumn nameColumn;
TreeViewColumn descriptionColumn;
this() {
super();
setActivateOnSingleClick(true);
viewData = new ViewData;
setModel(viewData);
auto renderer = new CellRendererText;
nameColumn = new TreeViewColumn("Name", renderer, "text",
0);
nameColumn.setResizable(true);
appendColumn(nameColumn);
renderer = new CellRendererText;
descriptionColumn = new TreeViewColumn("Description",
renderer,
"text", 1);
descriptionColumn.setResizable(true);
appendColumn(descriptionColumn);
}
void clear() {
viewData.clear;
}
void populate(NameAndDescription[] namesAndDescriptions) {
viewData.populate(namesAndDescriptions);
}
}
// Here's the ListStore I'm using:
class ViewData : ListStore {
import qtrac.debfind.modelutil: NameAndDescription;
this() {
import gobject.c.types: GType;
super([GType.STRING, GType.STRING]);
}
void populate(NameAndDescription[] namesAndDescriptions) {
import gtk.TreeIter: TreeIter;
clear;
TreeIter iter;
foreach (i, nameAndDescription; namesAndDescriptions) {
append(iter);
setValue(iter, 0, nameAndDescription.name);
setValue(iter, 1,
nameAndDescription.description);
}
}
}
// I have the TreeView side-by-side with a TextView: here're
snippets:
Paned splitter;
View debsView;
TextView debTextView;
...
splitter = new Paned(GtkOrientation.HORIZONTAL);
splitter.setWideHandle(true);
debsView = new View;
debsView.setHexpand(true);
debsView.setVexpand(true);
debTextView = new TextView;
...
auto grid = new Grid;
...
splitter.pack1(debsView, false, true);
splitter.pack2(debTextView, true, true);
grid.attach(splitter, 0, 3, 6, 1);
Re: GtkD - how to list 0..100K strings
26.04.2020 11:06, mark пишет: snipped Sorry for offtopic, imho both Qt and Gtk are too complex in case of virtual list/tree view. I think the reason is they are retained mode gui. I gave up to use them for that and develop custom virtual tree view that is easy in use and currently capable to handle over 2M heterogeneous items. But it is in alpha state and for general use needs much more attention.
Re: GtkD - how to list 0..100K strings
On 26-04-2020 10:06, mark wrote: I'm trying to develop an application in GtkD. I need a widget to display a list of strings: there could be anything from 0 to 100K strings, but typically a few hundred or thousand. Using the DemoCustomList as a model I have created this code: ... When populateNames() is called the treeview expands horizontally but shows nothing, so I'm stuck. Can anyone help? Note that I don't have to use a tree widget if there's a better one for this use case. I did see ListBox but that seemed to be a list of widgets which would be a bit heavy for 100K strings? The code looks correct, do you have something that compiles so that we can test where things go wrong? -- Mike Wey
GtkD - how to list 0..100K strings
I'm trying to develop an application in GtkD.
I need a widget to display a list of strings: there could be
anything from 0 to 100K strings, but typically a few hundred or
thousand.
Using the DemoCustomList as a model I have created this code:
// Note: DebNames is an AAset!string (AAset is a wrapper around a
D AA, so in this case a set of strings)
// namestore.d
import gtk.ListStore: ListStore;
class NameStore : ListStore {
this(DebNames names) {
import gobject.c.types: GType;
import gtk.TreeIter: TreeIter;
super([GType.STRING]);
TreeIter iter;
foreach (name; names) {
append(iter);
setValue(iter, 0, name);
}
}
}
// appwindow.d
final class AppWindow: ApplicationWindow {
TreeView debsTreeView;
NameStore nameStore;
// ...
private void populateNames(DebNames names) {
import gtk.CellRendererText: CellRendererText;
import gtk.TreeViewColumn: TreeViewColumn;
nameStore = new NameStore(names);
auto column = new TreeViewColumn;
auto renderer = new CellRendererText;
column.packStart(renderer, true);
column.addAttribute(renderer, "text", 0);
column.setTitle("Names");
debsTreeView.appendColumn(column);
}
}
When populateNames() is called the treeview expands horizontally
but shows nothing, so I'm stuck.
Can anyone help?
Note that I don't have to use a tree widget if there's a better
one for this use case. I did see ListBox but that seemed to be a
list of widgets which would be a bit heavy for 100K strings?
