Rewrites gtk_tree_view_column_request_width() and
gtk_tree_view_size_allocate_columns() to respect the minimum and natural
sizes that are already being returned by
gtk_cell_area_context_get_preferred_width().
The convoluted logic explained (not!) by this comment has been removed:
“Only update the expand value if the width of the widget has changed, or
the number of expand columns has changed, or if there are no expand
columns, or if we didn't have an size-allocation yet after the last
validated node.” This logic seems to have been a workaround for the
“jumping” behavior fixed in 16195ad and is no longer necessary.
https://bugzilla.gnome.org/show_bug.cgi?id=691751
Removes the hidden “resized-width” and “use-resized-width” properties
from GtkTreeViewColumn and instead uses the “fixed-width” property to
serve the same purpose. “fixed-width”, if set, will now override the
auto-sized width (-1 is now a legal value meaning “not set”).
Additional “cleanups” in this commit:
1. When the user resizes the column the “expand” property is now also
set to FALSE, in order to prevent the column from suddenly jumping to a
different width when the window is resized.
2. The code that translated mouse movement to column sizes has been
simplified:
the change in column width is now calculated directly from the distance
the mouse cursor has traveled. Weird behavior that might have happened
previously if the position of the column changed during resizing, is now
prevented.
3. There was some lengthy logic handling the keyboard shortcuts used to
resize treeview columns, which would call gtk_widget_error_bell() once
the minimum or maximum width was reached. Instead of rewriting these
checks I simply set the “fixed-width” property to what was requested,
relying on the fact that it is already clamped between the minimum and
maximum width during size allocation.
I will greatly surprised if anyone notices the missing error bell.
https://bugzilla.gnome.org/show_bug.cgi?id=691751
_gtk_tree_view_find_path() was not a name that not really described what
the function does. And I kept forgetting it. Also, it took the tree view
as an argument and that was completely unnecessary.
Expander animation has been replaced by implicit animations
from the style context.
Column headers are also properly themed, GtkContainer::get_path_for_child()
is implemented and the treeview resets column buttons style on columns
being reordered.
The default CSS has changed to theme treeviews sensibly.
This function is useful to figure out whether the tree view is "blank"
at a given location. For such locations you might want to popup a
custom popup menu, clear the current selection or start rubber banding.
In the future, we are planning on updating GtkTreeView's user
interactions to take advantage of this new function.
Part of bug 350618.
Check (x, y) is inside background area. If yes, continue processing
and clamp the coordinates into cell area. This way we will properly
handle getting a cell (which is only used for setting the focus cell)
for clicks in the indentation area (in LTR and RTL mode) and clicks
in the focus rectangle area in case focus-line-width is large.
Now we bookkeep the treeview assigned padding asides from the
requested width stored in the GtkCellAreaContext, this removes
the need for bookkeeping the deepest expanded depth in gtktreeview.c
At allocation time, just remove the padding from the allocated width
of the column and feed the rest to the underlying cell area.
Removed gtk_tree_view_get_real_requested_width_from_column() from
gtktreeview.c in favor of this function in the treeviewcolumn domain
(since this function goes and checks treeviewcolumn internals, settings
and derives the real requested width, seems logical this should be done
by the treeviewcolumn instead).
Now the GtkTreeViewColumn takes care of move/resizing its window and
allocating its button (except for the special case of current drag_column
where the column doesnt actually get reallocated).
Some details:
- button_request was not needed, consult the minimum request of the button
- gtk_tree_view_column_get_button() needed to be public as people can set
tooltips on the button (and libgail accesses the button).
This is still very much a work in progress, but it renders and more or
less works. I will be fixing up the details in the very near future.
Important: this commit breaks ABI as it modifies the GtkTreeViewColumn
structure in gtktreeviewcolumn.h. This is a sealed structure that needs
to be moved to an internal header file, most likely gtktreeprivate.h.
This patch adds the GtkScrollablePolicy type property to GtkScrollable
and implements it in all subclasses. GtkScrolledWindow observes this
property to make a good guess about when to show/hide scrollbars for
height-for-width content.
Most scrollable children do not do height-for-width *yet* but
most certainly will (toolpalette, treeview, iconview, textview
widgets all TODO), for scrollable widgets that do have a minimum
and natural size, it's important for them to observe the state
of this property in order to properly drive the scroll adjustments
according to the desired GtkScrollablePolicy. This patch makes
GtkViewport do this.
Patch also adds tests/testscrolledwindow.c to display the effects
of this property.
The GtkScrollable interface provides "hadjustment" and "vadjustment"
properties that are used by GtkScrolledWindow. It replaces
the ::set_scroll_adjustment signal. The scrollable interface
also has ::min-display-width/height properties that can be
used to control the minimally visible part inside a scrolled window.
Initialize event_last_[xy] to out of range coordinates and also update
these values in enter and leave notify. Fix up calls to
update_prelight() from size allocate. Unconditionally doing these calls
caused problems with hover selection. Now we only do this call when
the "width before the expander column" has changed. (Which might be
awkward, but it is the best heuristic I could come up with so far).
Commit again after revert.
Store (x, y) of last motion event. From
gtk_tree_view_adjustment_changed(), call prelight_or_select() so that
the prelight is recalculated. We do the same from
gtk_tree_view_size_allocate() for the case that clicking on an expander
shows new rows that resize the column(s) left of the expander. This
means that the expander is moved horizontally, in such a case the
prelight also has to be reconsidered.
Rework double click handling in GtkTreeView. We cannot blindly use
the 2BUTTON_PRESS and 3BUTTON_PRESS events. In case a user does two
fast double clicks, we receive a 3BUTTON_PRESS and BUTTON_PRESS. We
cannot easily deduce two double clicks from this.
We have removed the bookkeeping using row references of the last paths
clicked. Instead we monitor event time, (x, y) coordinates and compare
against double-click-time and double-click-distance ourselves.
Store (x, y) of last motion event. From
gtk_tree_view_adjustment_changed(), call prelight_or_select() so that
the prelight is recalculated. We do the same from
gtk_tree_view_size_allocate() for the case that clicking on an expander
shows new rows that resize the column(s) left of the expander. This
means that the expander is moved horizontally, in such a case the
prelight also has to be reconsidered.
This should now cause much less of a headache than before. Fields have
been properly reordered, each group has been given a comment. Since the
GtkTreePrivate structure is private (as the name says), this should not
have any effect on ABI.
GtkFileChooserDefault actually implements a binding signal for
Backspace, to make it go to the parent directory. However,
GtkTreeView was eating our Backspace, and thus the file chooser was
not getting a chance to execute its binding signal.
GtkTreeView implements a Backspace binding itself, which it uses to
move to the parent node of the current cursor node. However, the
binding handler would return TRUE even if there was no parent to the
current node. Now the binding handler only returns TRUE if it
actually changed the cursor.
Additionally, gtk_tree_view_key_press() sees if no bindings handled a
key press; in that case, it re-sends the key press to the treeview's
search entry. However, sending a Backspace to an empty entry makes
the entry beep. Thus, we add a flag that gets set from GtkTreeView's
Backspace binding handler, to tell gtk_tree_view_key_press() when it
should *not* re-emit the key press on the search entry. Sort of,
"yeah, I didn't handle this key press, but I don't want you to send it
to the search entry, either!".
Signed-off-by: Federico Mena Quintero <federico@novell.com>
2008-07-11 Kristian Rietveld <kris@gtk.org>
Bug 316087 - Resizing columns is chaotic
* gtk/gtktreeprivate.h: add new member fields.
* gtk/gtktreeview.c (gtk_tree_view_init), (validate_row): set post
validation flag,
(gtk_tree_view_size_allocate_columns): rework the size allocation
mechanism to only recalculate the expand values if the width of the
widget, content or the column configuration has changed,
(gtk_tree_view_size_allocate): move call to size_allocate_columns()
to before the adjustment updates so the proper width is used after
we updated it,
(gtk_tree_view_button_press), (gtk_tree_view_motion_resize_column):
use the column width minus the expand value for the resized width,
(gtk_tree_view_move_column_after): update call to
gtk_tree_view_size_allocate_columns().
* gtk/gtktreeviewcolumn.c (gtk_tree_view_column_set_expand): set use
resized width to FALSE.
* tests/Makefile.am:
* tests/testtreecolumnsizing.c: new interactive test program
for testing column resizing with different column configurations.
svn path=/trunk/; revision=20818
