gdb/tui: add new 'tui window width' command and 'winwidth' alias
This commit adds a new command 'tui window width', and an alias 'winwidth'. This command is equivalent to the old 'winheight' command (which was recently renamed 'tui window height'). Even though I recently moved the old tui commands under the tui namespace, and I would strongly encourage all new tui commands to be added as 'tui ....' only (users can create their own top-level aliases if they want), I'm breaking that suggestion here, and adding a 'winwidth' alias. Given that we already have 'winheight' and have done for years, it just didn't seem right to no have the matching 'winwidth'. You might notice in the test that the window resizing doesn't quite work right. I setup a horizontal layout, then grow and shrink the windows. At the end of the test the windows should be back to their original size... ... they are not. This isn't my fault, honest! GDB's window resizing is a little ... temperamental, and is prone to getting things slightly wrong during resizes, off by 1 type things. This is true for height resizing, as well as the new width resizing. Later patches in this series will rework the resizing algorithm, which should improve things in this area. For now, I'm happy that the width resizing is as good as the height resizing, given the existing quirks. For the docs side I include a paragraph that explains how multiple windows are required before the width can be adjusted. For completeness, I've added the same paragraph to the winheight description. With the predefined layouts this extra paragraph is not really needed for winheight, as there are always multiple windows on the screen. However, with custom layouts, this might not be true, so adding the paragraph seems like a good idea. As for the changes in gdb itself, I've mostly just taken the existing height adjustment code, changed the name to make it generic 'size' adjustment, and added a boolean flag to indicate if we are adjusting the width or the height.
This commit is contained in:
Andrew Burgess
parent
ef466e0f08
commit
160444ec7f
6
gdb/NEWS
6
gdb/NEWS
@ -148,6 +148,12 @@ tui window height
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and 'winheight' tui commands respectively. The old names still
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exist as aliases to these new commands.
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tui window width
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winwidth
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The new command 'tui window width', and the alias 'winwidth' allow
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the width of a tui window to be adjusted when windows are laid out
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in horizontal mode.
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* Changed commands
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print
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@ -29114,6 +29114,28 @@ Positive counts increase the height, while negative counts decrease
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it. The @var{name} parameter can be the name of any currently visible
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window. The names of the currently visible windows can be discovered
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using @kbd{info win} (@pxref{info_win_command,,info win}).
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The set of currently visible windows must always fill the terminal,
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and so, it is only possible to resize on window if there are other
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visible windows that can either give or receive the extra terminal
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space.
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@kindex tui window width
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@kindex winwidth
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@item tui window width @var{name} +@var{count}
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@itemx tui window width @var{name} -@var{count}
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@itemx winwidth @var{name} +@var{count}
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@itemx winwidth @var{name} -@var{count}
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Change the width of the window @var{name} by @var{count} columns.
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Positive counts increase the width, while negative counts decrease it.
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The @var{name} parameter can be the name of any currently visible
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window. The names of the currently visible windows can be discovered
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using @code{info win} (@pxref{info_win_command,,info win}).
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The set of currently visible windows must always fill the terminal,
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and so, it is only possible to resize on window if there are other
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visible windows that can either give or receive the extra terminal
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space.
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@end table
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@node TUI Configuration
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62
gdb/testsuite/gdb.tui/winwidth.exp
Normal file
62
gdb/testsuite/gdb.tui/winwidth.exp
Normal file
@ -0,0 +1,62 @@
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# Copyright 2022 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test the "winwidth" command.
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tuiterm_env
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standard_testfile tui-layout.c
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if {[build_executable "failed to prepare" ${testfile} ${srcfile}] == -1} {
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return -1
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}
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Term::clean_restart 24 80 $testfile
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if {![Term::enter_tui]} {
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unsupported "TUI not supported"
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return
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}
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Term::command "tui new-layout h { -horizontal src 1 asm 1 } 1 status 0 cmd 1"
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Term::command "layout h"
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with_test_prefix "original window sizes" {
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Term::check_box "source box" 0 0 40 15
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Term::check_box "asm box" 39 0 41 15
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Term::command "winwidth src +5"
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}
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with_test_prefix "after src +5" {
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Term::check_box "source box" 0 0 44 15
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Term::check_box "asm box" 43 0 37 15
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Term::command "winwidth asm -5"
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}
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with_test_prefix "after asm -5" {
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Term::check_box "source box" 0 0 48 15
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Term::check_box "asm box" 47 0 33 15
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Term::command "winwidth asm +8"
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}
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with_test_prefix "after asm +8" {
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Term::check_box "source box" 0 0 39 15
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Term::check_box "asm box" 38 0 42 15
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Term::command "winwidth src -2"
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}
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with_test_prefix "after src -2" {
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Term::check_box "source box" 0 0 36 15
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Term::check_box "asm box" 35 0 45 15
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}
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@ -121,6 +121,14 @@ tui_adjust_window_height (struct tui_win_info *win, int new_height)
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applied_layout->set_height (win->name (), new_height);
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}
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/* See tui-layout. */
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void
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tui_adjust_window_width (struct tui_win_info *win, int new_width)
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{
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applied_layout->set_width (win->name (), new_width);
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}
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/* Set the current layout to LAYOUT. */
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static void
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@ -571,7 +579,7 @@ tui_layout_split::set_weights_from_sizes ()
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/* See tui-layout.h. */
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tui_adjust_result
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tui_layout_split::set_height (const char *name, int new_height)
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tui_layout_split::set_size (const char *name, int new_size, bool set_width_p)
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{
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/* Look through the children. If one is a layout holding the named
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window, we're done; or if one actually is the named window,
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@ -579,13 +587,16 @@ tui_layout_split::set_height (const char *name, int new_height)
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int found_index = -1;
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for (int i = 0; i < m_splits.size (); ++i)
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{
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tui_adjust_result adjusted
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= m_splits[i].layout->set_height (name, new_height);
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tui_adjust_result adjusted;
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if (set_width_p)
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adjusted = m_splits[i].layout->set_width (name, new_size);
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else
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adjusted = m_splits[i].layout->set_height (name, new_size);
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if (adjusted == HANDLED)
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return HANDLED;
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if (adjusted == FOUND)
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{
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if (!m_vertical)
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if (set_width_p ? m_vertical : !m_vertical)
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return FOUND;
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found_index = i;
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break;
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@ -594,12 +605,15 @@ tui_layout_split::set_height (const char *name, int new_height)
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if (found_index == -1)
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return NOT_FOUND;
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if (m_splits[found_index].layout->height == new_height)
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int curr_size = (set_width_p
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? m_splits[found_index].layout->width
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: m_splits[found_index].layout->height);
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if (curr_size == new_size)
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return HANDLED;
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set_weights_from_sizes ();
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int delta = m_splits[found_index].weight - new_height;
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m_splits[found_index].weight = new_height;
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int delta = m_splits[found_index].weight - new_size;
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m_splits[found_index].weight = new_size;
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/* Distribute the "delta" over the next window; but if the next
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window cannot hold it all, keep going until we either find a
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@ -633,7 +647,10 @@ tui_layout_split::set_height (const char *name, int new_height)
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if (delta != 0)
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{
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warning (_("Invalid window height specified"));
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if (set_width_p)
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warning (_("Invalid window width specified"));
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else
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warning (_("Invalid window height specified"));
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/* Effectively undo any modifications made here. */
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set_weights_from_sizes ();
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}
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@ -79,6 +79,10 @@ public:
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the sizes of the other windows around it. */
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virtual tui_adjust_result set_height (const char *name, int new_height) = 0;
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/* Set the width of the window named NAME to NEW_WIDTH, updating
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the sizes of the other windows around it. */
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virtual tui_adjust_result set_width (const char *name, int new_width) = 0;
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/* Remove some windows from the layout, leaving the command window
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and the window being passed in here. */
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virtual void remove_windows (const char *name) = 0;
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@ -132,6 +136,11 @@ public:
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return m_contents == name ? FOUND : NOT_FOUND;
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}
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tui_adjust_result set_width (const char *name, int new_width) override
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{
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return m_contents == name ? FOUND : NOT_FOUND;
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}
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bool top_boxed_p () const override;
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bool bottom_boxed_p () const override;
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@ -192,7 +201,17 @@ public:
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void apply (int x, int y, int width, int height) override;
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tui_adjust_result set_height (const char *name, int new_height) override;
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tui_adjust_result set_height (const char *name, int new_height) override
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{
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/* Pass false as the final argument to indicate change of height. */
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return set_size (name, new_height, false);
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}
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tui_adjust_result set_width (const char *name, int new_width) override
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{
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/* Pass true as the final argument to indicate change of width. */
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return set_size (name, new_width, true);
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}
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bool top_boxed_p () const override;
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@ -217,6 +236,15 @@ protected:
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private:
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/* Used to implement set_height and set_width member functions. When
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SET_WIDTH_P is true, set the width, otherwise, set the height of the
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window named NAME to NEW_SIZE, updating the sizes of the other windows
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around it as needed. The result indicates if the window NAME was
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found and had its size adjusted, was found but was not adjusted, or
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was not found at all. */
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tui_adjust_result set_size (const char *name, int new_size,
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bool set_width_p);
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/* Set the weights from the current heights (when m_vertical is true) or
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widths (when m_vertical is false). */
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void set_weights_from_sizes ();
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@ -266,6 +294,10 @@ extern void tui_apply_current_layout ();
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extern void tui_adjust_window_height (struct tui_win_info *win,
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int new_height);
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/* Adjust the window width of WIN to NEW_WIDTH. */
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extern void tui_adjust_window_width (struct tui_win_info *win,
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int new_width);
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/* The type of a function that is used to create a TUI window. */
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typedef std::function<tui_win_info * (const char *name)> window_factory;
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@ -842,10 +842,21 @@ tui_set_tab_width_command (const char *arg, int from_tty)
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}
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}
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/* Helper function for the user commands to adjust a window's width or
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height. The ARG string contains the command line arguments from the
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user, which should give the name of a window, and how to adjust the
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size.
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When SET_WIDTH_P is true the width of the window is adjusted based on
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ARG, and when SET_WIDTH_P is false, the height of the window is adjusted
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based on ARG.
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On invalid input, or if the size can't be adjusted as requested, then an
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error is thrown, otherwise, the window sizes are adjusted, and the
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windows redrawn. */
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/* Set the height of the specified window. */
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static void
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tui_set_win_height_command (const char *arg, int from_tty)
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tui_set_win_size (const char *arg, bool set_width_p)
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{
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/* Make sure the curses mode is enabled. */
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tui_enable ();
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@ -854,7 +865,7 @@ tui_set_win_height_command (const char *arg, int from_tty)
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const char *buf = arg;
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const char *buf_ptr = buf;
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int new_height;
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int new_size;
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struct tui_win_info *win_info;
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buf_ptr = skip_to_space (buf_ptr);
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@ -890,20 +901,53 @@ tui_set_win_height_command (const char *arg, int from_tty)
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if (negate)
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input_no *= (-1);
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if (fixed_size)
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new_height = input_no;
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new_size = input_no;
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else
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new_height = win_info->height + input_no;
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{
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int curr_size;
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if (set_width_p)
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curr_size = win_info->width;
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else
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curr_size = win_info->height;
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new_size = curr_size + input_no;
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}
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/* Now change the window's height, and adjust
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all other windows around it. */
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tui_adjust_window_height (win_info, new_height);
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if (set_width_p)
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tui_adjust_window_width (win_info, new_size);
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else
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tui_adjust_window_height (win_info, new_size);
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tui_update_gdb_sizes ();
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}
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else
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error (_("Invalid window height specified"));
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{
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if (set_width_p)
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error (_("Invalid window width specified"));
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else
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error (_("Invalid window height specified"));
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}
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}
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}
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/* Implement the 'tui window height' command (alias 'winheight'). */
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static void
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tui_set_win_height_command (const char *arg, int from_tty)
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{
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/* Pass false as the final argument to set the height. */
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tui_set_win_size (arg, false);
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}
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/* Implement the 'tui window width' command (alias 'winwidth'). */
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static void
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tui_set_win_width_command (const char *arg, int from_tty)
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{
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/* Pass true as the final argument to set the width. */
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tui_set_win_size (arg, true);
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}
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/* See tui-data.h. */
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int
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@ -1033,6 +1077,16 @@ Use \"info win\" to see the names of the windows currently being displayed."),
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add_com_alias ("winheight", winheight_cmd, class_tui, 0);
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add_com_alias ("wh", winheight_cmd, class_tui, 0);
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set_cmd_completer (winheight_cmd, winheight_completer);
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cmd_list_element *winwidth_cmd
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= add_cmd ("width", class_tui, tui_set_win_width_command, _("\
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Set or modify the width of a specified window.\n\
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Usage: tui window width WINDOW-NAME [+ | -] NUM-LINES\n\
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Use \"info win\" to see the names of the windows currently being displayed."),
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&tui_window_cmds);
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add_com_alias ("winwidth", winwidth_cmd, class_tui, 0);
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set_cmd_completer (winwidth_cmd, winheight_completer);
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add_info ("win", tui_all_windows_info,
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_("List of all displayed windows.\n\
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Usage: info win"));
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