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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibCore/Timer.h>
#include <LibGUI/AbstractScrollableWidget.h>
#include <LibGUI/TextRange.h>
#include <LibGfx/Font/BitmapFont.h>
#include <LibUnicode/CharacterTypes.h>
namespace GUI {
class GlyphMapWidget final : public AbstractScrollableWidget {
C_OBJECT(GlyphMapWidget)
public:
virtual ~GlyphMapWidget() override = default;
class Selection {
public:
Selection() = default;
Selection(int start, int size)
: m_start(start)
, m_size(size)
{
}
int size() const { return m_size; }
void set_size(int i) { m_size = i; }
int start() const { return m_start; }
void set_start(int i) { m_start = i; }
Selection normalized() const;
bool contains(int) const;
void resize_by(int i);
void extend_to(int);
private:
int m_start { 0 };
int m_size { 1 };
};
Selection selection() const { return m_selection; }
int active_glyph() const { return m_active_glyph; }
enum class ShouldResetSelection {
Yes,
No
};
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 clear_selection() { m_selection.set_size(0); }
void scroll_to_glyph(int);
void update_glyph(int);
void select_previous_existing_glyph();
void select_next_existing_glyph();
int rows() const { return m_rows; }
int columns() const { return m_columns; }
Function<void(int)> on_active_glyph_changed;
Function<void(int)> on_glyph_double_clicked;
Function<void(ContextMenuEvent&)> on_context_menu_request;
private:
GlyphMapWidget();
virtual void paint_event(PaintEvent&) override;
virtual void mousedown_event(MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void doubleclick_event(MouseEvent&) override;
virtual void keydown_event(KeyEvent&) override;
virtual void resize_event(ResizeEvent&) override;
virtual void did_change_font() override;
virtual void context_menu_event(ContextMenuEvent&) override;
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();
int m_glyph_count { 0x110000 };
int m_columns { 0 };
int m_rows { 0 };
int m_horizontal_spacing { 2 };
int m_vertical_spacing { 2 };
Selection m_selection;
int m_active_glyph { 0 };
int m_visible_glyphs { 0 };
bool m_in_drag_select { false };
Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
Gfx::IntPoint m_last_mousemove_position;
};
}
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