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fe3b846ac8
https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules "The compiler is more likely to get the default semantics right and you cannot implement these functions better than the compiler."
99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibGUI/AbstractScrollableWidget.h>
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#include <LibGUI/TextRange.h>
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#include <LibGfx/BitmapFont.h>
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#include <LibUnicode/CharacterTypes.h>
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namespace GUI {
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class GlyphMapWidget final : public AbstractScrollableWidget {
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C_OBJECT(GlyphMapWidget)
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public:
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virtual ~GlyphMapWidget() override = default;
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class Selection {
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public:
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Selection() = default;
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Selection(int start, int size)
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: m_start(start)
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, m_size(size)
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{
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}
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int size() const { return m_size; }
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void set_size(int i) { m_size = i; }
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int start() const { return m_start; }
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void set_start(int i) { m_start = i; }
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Selection normalized() const;
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bool contains(int) const;
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void resize_by(int i);
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void extend_to(int);
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private:
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int m_start { 0 };
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int m_size { 1 };
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};
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Selection selection() const { return m_selection; }
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int active_glyph() const { return m_active_glyph; }
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enum class ShouldResetSelection {
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Yes,
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No
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};
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void set_active_range(Unicode::CodePointRange);
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void set_active_glyph(int, ShouldResetSelection = ShouldResetSelection::Yes);
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void clear_selection() { m_selection.set_size(0); }
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void scroll_to_glyph(int);
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void update_glyph(int);
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void select_previous_existing_glyph();
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void select_next_existing_glyph();
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int rows() const { return m_rows; }
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int columns() const { return m_columns; }
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Function<void(int)> on_active_glyph_changed;
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Function<void(int)> on_glyph_double_clicked;
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private:
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GlyphMapWidget();
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virtual void paint_event(PaintEvent&) override;
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virtual void mousedown_event(MouseEvent&) override;
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virtual void mouseup_event(GUI::MouseEvent&) override;
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virtual void mousemove_event(GUI::MouseEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void keydown_event(KeyEvent&) override;
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virtual void resize_event(ResizeEvent&) override;
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virtual void did_change_font() override;
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Gfx::IntRect get_outer_rect(int glyph) const;
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Optional<int> glyph_at_position(Gfx::IntPoint) const;
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void recalculate_content_size();
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int m_glyph_count { 0x110000 };
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int m_columns { 0 };
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int m_rows { 0 };
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int m_horizontal_spacing { 2 };
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int m_vertical_spacing { 2 };
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Selection m_selection;
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int m_active_glyph { 0 };
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int m_visible_glyphs { 0 };
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bool m_in_drag_select { false };
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Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
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};
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}
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