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LibGUI: Add automatic scrolling to GlyphMapWidget

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Similar to TextEditor, GlyphMapWidget now automatically scrolls
when dragging a selection outside its boundaries.
This commit is contained in:
thankyouverycool 2022-03-19 10:44:44 -04:00 • committed by Andreas Kling
parent a26e71a137
commit 5c6326ae23
2 changed files with 18 additions and 8 deletions
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23
Userland/Libraries/LibGUI/GlyphMapWidget.cpp
View file

@ -54,6 +54,19 @@ GlyphMapWidget::GlyphMapWidget()
horizontal_scrollbar().set_visible(false); horizontal_scrollbar().set_visible(false);
did_change_font(); did_change_font();
set_active_glyph('A'); set_active_glyph('A');
m_automatic_selection_scroll_timer = add<Core::Timer>(20, [this] {
if (!m_in_drag_select) {
m_automatic_selection_scroll_timer->stop();
return;
}
auto glyph = glyph_at_position_clamped(m_last_mousemove_position);
m_selection.extend_to(glyph);
set_active_glyph(glyph, ShouldResetSelection::No);
scroll_to_glyph(glyph);
update();
});
m_automatic_selection_scroll_timer->stop();
} }
void GlyphMapWidget::resize_event(ResizeEvent& event) void GlyphMapWidget::resize_event(ResizeEvent& event)
@ -168,6 +181,7 @@ void GlyphMapWidget::mousedown_event(MouseEvent& event)
if (event.shift()) if (event.shift())
m_selection.extend_to(glyph); m_selection.extend_to(glyph);
m_in_drag_select = true; m_in_drag_select = true;
m_automatic_selection_scroll_timer->start();
set_active_glyph(glyph, event.shift() ? ShouldResetSelection::No : ShouldResetSelection::Yes); set_active_glyph(glyph, event.shift() ? ShouldResetSelection::No : ShouldResetSelection::Yes);
} }
} }
@ -187,14 +201,7 @@ void GlyphMapWidget::mouseup_event(GUI::MouseEvent& event)
void GlyphMapWidget::mousemove_event(GUI::MouseEvent& event) void GlyphMapWidget::mousemove_event(GUI::MouseEvent& event)
{ {
if (!m_in_drag_select) m_last_mousemove_position = event.position();
return;
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) void GlyphMapWidget::doubleclick_event(MouseEvent& event)

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

@ -8,6 +8,7 @@
#pragma once #pragma once
#include <LibCore/Timer.h>
#include <LibGUI/AbstractScrollableWidget.h> #include <LibGUI/AbstractScrollableWidget.h>
#include <LibGUI/TextRange.h> #include <LibGUI/TextRange.h>
#include <LibGfx/BitmapFont.h> #include <LibGfx/BitmapFont.h>
@ -94,6 +95,8 @@ private:
int m_visible_glyphs { 0 }; int m_visible_glyphs { 0 };
bool m_in_drag_select { false }; bool m_in_drag_select { false };
Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF }; Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
Gfx::IntPoint m_last_mousemove_position;
}; };
} }