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Code Issues Projects Releases Packages Wiki Activity Actions 10

LibGUI: Clamp selection when drag-selecting over out of range area

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Maciej 2022-03-01 21:17:57 +01:00 committed by Andreas Kling
parent bee9cd2113
commit a95794a356
Notes: sideshowbarker 2024-07-17 17:15:30 +09:00 
Author: https://github.com/sppmacd
Commit: https://github.com/SerenityOS/serenity/commit/a95794a356
Pull-request: https://github.com/SerenityOS/serenity/pull/12836
Reviewed-by: https://github.com/thankyouverycool
2 changed files with 21 additions and 10 deletions
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30
Userland/Libraries/LibGUI/GlyphMapWidget.cpp
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@ -149,6 +149,18 @@ Optional<int> GlyphMapWidget::glyph_at_position(Gfx::IntPoint position) const
return {};
}
int GlyphMapWidget::glyph_at_position_clamped(Gfx::IntPoint position) const
{
Gfx::IntPoint map_offset { frame_thickness() - horizontal_scrollbar().value(), frame_thickness() - vertical_scrollbar().value() };
auto map_position = position - map_offset;
auto col = clamp((map_position.x() - 1) / ((font().max_glyph_width() + m_horizontal_spacing)), 0, columns() - 1);
auto row = clamp((map_position.y() - 1) / ((font().glyph_height() + m_vertical_spacing)), 0, rows() - 1);
auto glyph = row * columns() + col + m_active_range.first;
if (row == rows() - 1)
glyph = min(glyph, m_glyph_count + m_active_range.first - 1);
return glyph;
}
void GlyphMapWidget::mousedown_event(MouseEvent& event)
{
Frame::mousedown_event(event);
@ -172,13 +184,13 @@ void GlyphMapWidget::mouseup_event(GUI::MouseEvent& event)
if (!m_in_drag_select)
return;
if (auto maybe_glyph = glyph_at_position(event.position()); maybe_glyph.has_value()) {
auto constrained = event.position().constrained(rect().shrunken(0, frame_thickness() * 2));
if (auto maybe_glyph = glyph_at_position(constrained); maybe_glyph.has_value()) {
auto glyph = maybe_glyph.value();
m_selection.extend_to(glyph);
m_in_drag_select = false;
set_active_glyph(glyph, ShouldResetSelection::No);
}
m_in_drag_select = false;
}
void GlyphMapWidget::mousemove_event(GUI::MouseEvent& event)
@ -188,13 +200,11 @@ void GlyphMapWidget::mousemove_event(GUI::MouseEvent& event)
if (!m_in_drag_select)
return;
if (auto maybe_glyph = glyph_at_position(event.position()); maybe_glyph.has_value()) {
auto glyph = maybe_glyph.value();
m_selection.extend_to(glyph);
set_active_glyph(glyph, ShouldResetSelection::No);
scroll_to_glyph(glyph);
update();
}
auto glyph = glyph_at_position_clamped(event.position());
m_selection.extend_to(glyph);
set_active_glyph(glyph, ShouldResetSelection::No);
scroll_to_glyph(glyph);
update();
}
void GlyphMapWidget::doubleclick_event(MouseEvent& event)

1
Userland/Libraries/LibGUI/GlyphMapWidget.h
View file

@ -80,6 +80,7 @@ private:
Gfx::IntRect get_outer_rect(int glyph) const;
Optional<int> glyph_at_position(Gfx::IntPoint) const;
int glyph_at_position_clamped(Gfx::IntPoint) const;
void recalculate_content_size();