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LibGUI+FontEditor: Restore normalized selections on Undo/Redo

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Selections are always normalized when saving undo commands.
The restore_selection() function reverses this process so
negatively sized selections (created right-to-left) continue
to resize correctly with the keyboard when restored.
This commit is contained in:
thankyouverycool 2022-12-17 15:36:02 -05:00 committed by Andreas Kling
parent 02212f373b
commit 40e94a315a
Notes: sideshowbarker 2024-07-17 02:58:33 +09:00 
Author: https://github.com/thankyouverycool
Commit: https://github.com/SerenityOS/serenity/commit/40e94a315a
Pull-request: https://github.com/SerenityOS/serenity/pull/16566
3 changed files with 16 additions and 2 deletions
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4
Userland/Applications/FontEditor/MainWidget.cpp
View file

@ -811,7 +811,7 @@ void MainWidget::undo()
deferred_invoke([this, glyph] {
auto start = m_undo_selection->restored_start();
auto size = m_undo_selection->restored_size();
m_glyph_map_widget->set_selection(start, size, glyph);
m_glyph_map_widget->restore_selection(start, size, glyph);
m_glyph_map_widget->scroll_to_glyph(glyph);
m_glyph_map_widget->set_focus(true);
});
@ -841,7 +841,7 @@ void MainWidget::redo()
deferred_invoke([this, glyph] {
auto start = m_undo_selection->restored_start();
auto size = m_undo_selection->restored_size();
m_glyph_map_widget->set_selection(start, size, glyph);
m_glyph_map_widget->restore_selection(start, size, glyph);
m_glyph_map_widget->scroll_to_glyph(glyph);
m_glyph_map_widget->set_focus(true);
});

11
Userland/Libraries/LibGUI/GlyphMapWidget.cpp
View file

@ -97,6 +97,17 @@ void GlyphMapWidget::set_selection(int start, int size, Optional<u32> active_gly
set_active_glyph(active_glyph.value(), ShouldResetSelection::No);
}
void GlyphMapWidget::restore_selection(int start, int size, int active_glyph)
{
if (start == active_glyph && size > 1) {
start = active_glyph + size - 1;
size = -size + 1;
}
m_selection.set_start(start);
m_selection.set_size(size);
set_active_glyph(active_glyph, ShouldResetSelection::No);
}
Gfx::IntRect GlyphMapWidget::get_outer_rect(int glyph) const
{
glyph -= m_active_range.first;

3
Userland/Libraries/LibGUI/GlyphMapWidget.h
View file

@ -57,7 +57,10 @@ public:
void set_active_range(Unicode::CodePointRange);
void set_active_glyph(int, ShouldResetSelection = ShouldResetSelection::Yes);
void set_selection(int start, int size, Optional<u32> active_glyph = {});
void restore_selection(int start, int size, int active_glyph);
void scroll_to_glyph(int);
void update_glyph(int);