ladybird/Userland/Libraries/LibGUI/GlyphMapWidget.h
Sam Atkins 014d825472 LibGUI: Allow GlyphMapWidget to highlight modified glyphs
This makes modifications in FontEditor more visible, both so you know
what you've changed, and for taking a handy "here's what's changed"
screenshot for a font PR. :^)

The background color for new glyphs is green, modified glyphs is blue,
and deleted glyphs is red. The changes persist until you load a new
font file, so you can continue saving your work as you go and still be
able to take a convenient screenshot at the end.

I didn't feel like this one use was enough to add 3 new color roles to
themes, so to make this look decent on dark themes, it detects if the
theme is marked as dark, and uses darker colors for the highlights
which look nice with a light text color.
2022-08-14 13:59:19 +01:00

114 lines
3.4 KiB
C++

/*
* 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;
void set_font(Gfx::Font const&);
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 set_highlight_modifications(bool);
void set_glyph_modified(u32 glyph, bool modified);
bool glyph_is_modified(u32 glyph);
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();
RefPtr<Gfx::Font> m_original_font;
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 };
bool m_highlight_modifications { false };
HashTable<u32> m_modified_glyphs;
Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
Gfx::IntPoint m_last_mousemove_position;
};
}