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LibVT: Make TerminalWidget logically focusable when not a main widget

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TerminalWidget was relying on the "window became active/inactive"
events from WindowServer to update its own internal focus state.

Unfortunately those events are only sent to the window's main widget,
so this was not working when the TerminalWidget was embedded deeper in
a widget tree.

This patch hooks the focusin and focusout events and uses those to
set the focus state when received. This makes TerminalWidget behave
nicely in both configurations. This design is kind of a workaround for
this awkward focus architecture and we should figure out something
better in the long term.
This commit is contained in:
Andreas Kling 2019-10-21 20:14:51 +02:00
parent 8b4903e733
commit 5b30aa8b02
2 changed files with 41 additions and 19 deletions
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52
Libraries/LibVT/TerminalWidget.cpp
View file

@ -1,7 +1,7 @@
#include "TerminalWidget.h"
#include "XtermColors.h"
#include <AK/String.h>
#include <AK/StdLibExtras.h>
#include <AK/String.h>
#include <AK/StringBuilder.h>
#include <Kernel/KeyCode.h>
#include <LibDraw/Font.h>
@ -101,20 +101,38 @@ Rect TerminalWidget::row_rect(u16 row)
return rect;
}
void TerminalWidget::set_logical_focus(bool focus)
{
m_has_logical_focus = focus;
if (!m_has_logical_focus) {
m_cursor_blink_timer->stop();
} else {
m_cursor_blink_state = true;
m_cursor_blink_timer->start();
}
invalidate_cursor();
update();
}
void TerminalWidget::focusin_event(CEvent& event)
{
set_logical_focus(true);
return GFrame::focusin_event(event);
}
void TerminalWidget::focusout_event(CEvent& event)
{
set_logical_focus(false);
return GFrame::focusout_event(event);
}
void TerminalWidget::event(CEvent& event)
{
if (event.type() == GEvent::WindowBecameActive || event.type() == GEvent::WindowBecameInactive) {
m_in_active_window = event.type() == GEvent::WindowBecameActive;
if (!m_in_active_window) {
m_cursor_blink_timer->stop();
} else {
m_cursor_blink_state = true;
m_cursor_blink_timer->start();
}
invalidate_cursor();
update();
}
return GWidget::event(event);
if (event.type() == GEvent::WindowBecameActive)
set_logical_focus(true);
else if (event.type() == GEvent::WindowBecameInactive)
set_logical_focus(false);
return GFrame::event(event);
}
void TerminalWidget::keydown_event(GKeyEvent& event)
@ -239,7 +257,6 @@ void TerminalWidget::paint_event(GPaintEvent& event)
else if (has_only_one_background_color)
painter.fill_rect(row_rect, lookup_color(line.attributes[0].background_color).with_alpha(m_opacity));
// The terminal insists on thinking characters and
// bytes are the same thing. We want to still draw
// emojis in *some* way, but it won't be completely
@ -265,9 +282,8 @@ void TerminalWidget::paint_event(GPaintEvent& event)
VT::Attribute attribute;
for (u16 column = this_char_column; column < next_char_column; ++column) {
should_reverse_fill_for_cursor_or_selection |=
m_cursor_blink_state
&& m_in_active_window
should_reverse_fill_for_cursor_or_selection |= m_cursor_blink_state
&& m_has_logical_focus
&& row == row_with_cursor
&& column == m_terminal.cursor_column();
should_reverse_fill_for_cursor_or_selection |= selection_contains({ row, column });
@ -295,7 +311,7 @@ void TerminalWidget::paint_event(GPaintEvent& event)
}
}
if (!m_in_active_window && row_with_cursor < m_terminal.rows()) {
if (!m_has_logical_focus && row_with_cursor < m_terminal.rows()) {
auto& cursor_line = line_for_visual_row(row_with_cursor);
if (m_terminal.cursor_row() < (m_terminal.rows() - rows_from_history)) {
auto cell_rect = glyph_rect(row_with_cursor, m_terminal.cursor_column()).inflated(0, m_line_spacing);