mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 18:52:45 +00:00
369 lines
11 KiB
C++
369 lines
11 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "GlyphEditorWidget.h"
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#include <AK/StringBuilder.h>
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#include <AK/UnicodeUtils.h>
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#include <LibGUI/Clipboard.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/BitmapFont.h>
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#include <LibGfx/Palette.h>
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#include <string.h>
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GlyphEditorWidget::~GlyphEditorWidget()
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{
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}
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void GlyphEditorWidget::initialize(Gfx::BitmapFont& mutable_font)
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{
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if (m_font == mutable_font)
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return;
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m_font = mutable_font;
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set_relative_rect({ 0, 0, preferred_width(), preferred_height() });
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}
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void GlyphEditorWidget::set_glyph(int glyph)
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{
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if (m_glyph == glyph)
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return;
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m_glyph = glyph;
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update();
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}
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void GlyphEditorWidget::delete_glyph()
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{
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if (on_undo_event)
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on_undo_event();
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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for (int x = 0; x < font().max_glyph_width(); x++)
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for (int y = 0; y < font().glyph_height(); y++)
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bitmap.set_bit_at(x, y, false);
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font().set_glyph_width(m_glyph, 0);
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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void GlyphEditorWidget::cut_glyph()
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{
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copy_glyph();
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delete_glyph();
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}
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void GlyphEditorWidget::copy_glyph()
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{
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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u8 bits[bitmap.width()][bitmap.height()];
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for (int x = 0; x < bitmap.width(); x++) {
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for (int y = 0; y < bitmap.height(); y++) {
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bits[x][y] = bitmap.bit_at(x, y);
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}
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}
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StringBuilder glyph_builder;
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if (AK::UnicodeUtils::is_unicode_control_code_point(m_glyph))
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glyph_builder.append(AK::UnicodeUtils::get_unicode_control_code_point_alias(m_glyph).value());
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else if (Gfx::get_char_bidi_class(m_glyph) == Gfx::BidirectionalClass::STRONG_RTL)
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glyph_builder.append_code_point(0xFFFD);
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else
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glyph_builder.append_code_point(m_glyph);
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HashMap<String, String> metadata;
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metadata.set("char", glyph_builder.to_string());
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metadata.set("width", String::number(bitmap.width()));
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metadata.set("height", String::number(bitmap.height()));
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GUI::Clipboard::the().set_data(ReadonlyBytes(&bits[0], bitmap.width() * bitmap.height()), "glyph/x-fonteditor", metadata);
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}
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void GlyphEditorWidget::paste_glyph()
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{
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auto [data, mime_type, metadata] = GUI::Clipboard::the().fetch_data_and_type();
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if (!mime_type.starts_with("glyph/"))
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return;
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auto byte_buffer = data.data();
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auto buffer_height = metadata.get("height").value_or("0").to_int().value_or(0);
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auto buffer_width = metadata.get("width").value_or("0").to_int().value_or(0);
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if (buffer_height <= 0 || buffer_width <= 0 || buffer_height > 128 || buffer_width > 128) {
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dbgln("Refusing to receive glyph of dimensions {}x{}", buffer_width, buffer_height);
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return;
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}
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if (data.size() != static_cast<size_t>(buffer_width * buffer_height)) {
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dbgln("Refusing to receive glyph with mismatching buffer sizes: Expected {}x{}={} bytes, received {} bytes.",
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buffer_width, buffer_height, buffer_width * buffer_height, data.size());
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return;
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}
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if (on_undo_event)
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on_undo_event();
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u8 bits[buffer_width][buffer_height];
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int i = 0;
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for (int x = 0; x < buffer_width; x++) {
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for (int y = 0; y < buffer_height; y++) {
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bits[x][y] = byte_buffer[i];
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i++;
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}
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}
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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if (bitmap.width() < buffer_width)
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font().set_glyph_width(m_glyph, min(buffer_width, font().max_glyph_width()));
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for (int x = 0; x < min(buffer_width, font().max_glyph_width()); x++) {
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for (int y = 0; y < min(buffer_height, font().glyph_height()); y++) {
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bitmap.set_bit_at(x, y, bits[x][y]);
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}
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}
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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void GlyphEditorWidget::paint_event(GUI::PaintEvent& event)
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{
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GUI::Frame::paint_event(event);
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GUI::Painter painter(*this);
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painter.add_clip_rect(frame_inner_rect());
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painter.add_clip_rect(event.rect());
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painter.fill_rect(frame_inner_rect(), palette().base());
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painter.translate(frame_thickness(), frame_thickness());
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painter.translate(-1, -1);
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for (int y = 1; y < font().glyph_height(); ++y) {
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int y_below = y - 1;
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bool bold_line = y_below == font().baseline() || y_below == font().mean_line();
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painter.draw_line({ 0, y * m_scale }, { font().max_glyph_width() * m_scale, y * m_scale }, palette().threed_shadow2(), bold_line ? 2 : 1);
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}
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for (int x = 1; x < font().max_glyph_width(); ++x)
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painter.draw_line({ x * m_scale, 0 }, { x * m_scale, font().glyph_height() * m_scale }, palette().threed_shadow2());
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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for (int y = 0; y < font().glyph_height(); ++y) {
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for (int x = 0; x < font().max_glyph_width(); ++x) {
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Gfx::IntRect rect { x * m_scale, y * m_scale, m_scale, m_scale };
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if (x >= font().raw_glyph_width(m_glyph)) {
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painter.fill_rect(rect, palette().threed_shadow1());
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} else {
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if (bitmap.bit_at(x, y))
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painter.fill_rect(rect, palette().base_text());
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}
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}
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}
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}
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bool GlyphEditorWidget::is_glyph_empty()
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{
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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for (int x = 0; x < font().max_glyph_width(); x++)
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for (int y = 0; y < font().glyph_height(); y++)
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if (bitmap.bit_at(x, y))
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return false;
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return true;
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}
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void GlyphEditorWidget::mousedown_event(GUI::MouseEvent& event)
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{
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if ((event.x() - 1) / m_scale + 1 > font().raw_glyph_width(m_glyph))
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return;
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if (mode() == Move && is_glyph_empty())
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return;
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m_is_clicking_valid_cell = true;
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if (on_undo_event)
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on_undo_event();
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if (mode() == Paint) {
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draw_at_mouse(event);
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} else {
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memset(m_movable_bits, 0, sizeof(m_movable_bits));
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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for (int x = 0; x < bitmap.width(); x++) {
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for (int y = 0; y < bitmap.height(); y++) {
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int movable_x = Gfx::GlyphBitmap::max_width() + x;
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int movable_y = Gfx::GlyphBitmap::max_height() + y;
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m_movable_bits[movable_x][movable_y] = bitmap.bit_at(x, y);
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}
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}
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m_scaled_offset_x = (event.x() - 1) / m_scale;
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m_scaled_offset_y = (event.y() - 1) / m_scale;
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move_at_mouse(event);
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}
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}
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void GlyphEditorWidget::mouseup_event(GUI::MouseEvent&)
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{
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if (!m_is_clicking_valid_cell)
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return;
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m_is_clicking_valid_cell = false;
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}
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void GlyphEditorWidget::mousemove_event(GUI::MouseEvent& event)
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{
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if (!m_is_clicking_valid_cell)
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return;
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if (!(event.buttons() & (GUI::MouseButton::Primary | GUI::MouseButton::Secondary)))
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return;
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if (mode() == Paint)
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draw_at_mouse(event);
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else
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move_at_mouse(event);
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}
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void GlyphEditorWidget::enter_event(Core::Event&)
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{
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if (mode() == Move)
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set_override_cursor(Gfx::StandardCursor::Move);
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else
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set_override_cursor(Gfx::StandardCursor::None);
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}
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void GlyphEditorWidget::draw_at_mouse(GUI::MouseEvent const& event)
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{
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bool set = event.buttons() & GUI::MouseButton::Primary;
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bool unset = event.buttons() & GUI::MouseButton::Secondary;
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if (!(set ^ unset))
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return;
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int x = (event.x() - 1) / m_scale;
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int y = (event.y() - 1) / m_scale;
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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if (x < 0 || x >= bitmap.width())
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return;
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if (y < 0 || y >= bitmap.height())
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return;
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if (bitmap.bit_at(x, y) == set)
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return;
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bitmap.set_bit_at(x, y, set);
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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void GlyphEditorWidget::move_at_mouse(GUI::MouseEvent const& event)
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{
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int x_delta = ((event.x() - 1) / m_scale) - m_scaled_offset_x;
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int y_delta = ((event.y() - 1) / m_scale) - m_scaled_offset_y;
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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if (abs(x_delta) > bitmap.width() || abs(y_delta) > bitmap.height())
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return;
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for (int x = 0; x < bitmap.width(); x++) {
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for (int y = 0; y < bitmap.height(); y++) {
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int movable_x = Gfx::GlyphBitmap::max_width() + x - x_delta;
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int movable_y = Gfx::GlyphBitmap::max_height() + y - y_delta;
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bitmap.set_bit_at(x, y, m_movable_bits[movable_x][movable_y]);
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}
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}
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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static Vector<Vector<u8>> glyph_as_matrix(Gfx::GlyphBitmap const& bitmap)
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{
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Vector<Vector<u8>> result;
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result.ensure_capacity(bitmap.height());
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for (int y = 0; y < bitmap.height(); y++) {
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result.empend();
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auto& row = result.last();
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row.ensure_capacity(bitmap.width());
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for (int x = 0; x < bitmap.width(); x++) {
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row.append(bitmap.bit_at(x, y));
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}
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}
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return result;
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}
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void GlyphEditorWidget::rotate_90(Direction direction)
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{
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if (on_undo_event)
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on_undo_event();
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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auto matrix = glyph_as_matrix(bitmap);
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for (int y = 0; y < bitmap.height(); y++) {
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for (int x = 0; x < bitmap.width(); x++) {
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int source_x = (direction == Counterclockwise) ? max(bitmap.width() - 1 - y, 0) : y;
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int source_y = (direction == Counterclockwise) ? x : bitmap.width() - 1 - x;
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bool value = false;
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if (source_x < bitmap.width() && source_y < bitmap.height()) {
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value = (direction == Counterclockwise && y >= bitmap.width()) ? false : matrix[source_y][source_x];
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}
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bitmap.set_bit_at(x, y, value);
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}
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}
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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void GlyphEditorWidget::flip_vertically()
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{
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if (on_undo_event)
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on_undo_event();
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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auto matrix = glyph_as_matrix(bitmap);
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for (int y = 0; y < bitmap.height(); y++) {
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for (int x = 0; x < bitmap.width(); x++) {
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int source_x = x;
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int source_y = bitmap.height() - 1 - y;
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bool value = matrix[source_y][source_x];
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bitmap.set_bit_at(x, y, value);
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}
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}
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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void GlyphEditorWidget::flip_horizontally()
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{
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if (on_undo_event)
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on_undo_event();
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auto bitmap = font().raw_glyph(m_glyph).glyph_bitmap();
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auto matrix = glyph_as_matrix(bitmap);
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for (int y = 0; y < bitmap.height(); y++) {
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for (int x = 0; x < bitmap.width(); x++) {
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int source_x = bitmap.width() - 1 - x;
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int source_y = y;
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bool value = matrix[source_y][source_x];
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bitmap.set_bit_at(x, y, value);
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}
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}
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if (on_glyph_altered)
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on_glyph_altered(m_glyph);
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update();
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}
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int GlyphEditorWidget::preferred_width() const
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{
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return frame_thickness() * 2 + font().max_glyph_width() * m_scale - 1;
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}
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int GlyphEditorWidget::preferred_height() const
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{
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return frame_thickness() * 2 + font().glyph_height() * m_scale - 1;
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}
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void GlyphEditorWidget::set_scale(int scale)
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{
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if (m_scale == scale)
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return;
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m_scale = clamp(scale, 1, 15);
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update();
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}
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