mirror of
https://github.com/RGBCube/serenity
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f663e2dbd1
The font isn't set in the constructor, there may be a case where the font hasn't loaded before the first paint event. Therefore, we should not paint if the font is null. All other methods should be fine.
258 lines
7.7 KiB
C++
258 lines
7.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@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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#include "GlyphEditorWidget.h"
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#include <LibGUI/Painter.h>
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#include <LibGfx/Font/BitmapFont.h>
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#include <LibGfx/Palette.h>
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REGISTER_WIDGET(FontEditor, GlyphEditorWidget);
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namespace FontEditor {
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void GlyphEditorWidget::set_font(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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}
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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::paint_event(GUI::PaintEvent& event)
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{
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if (!m_font)
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return;
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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(Gfx::RotationDirection 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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auto clockwise = direction == Gfx::RotationDirection::Clockwise;
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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 = clockwise ? y : max(bitmap.width() - 1 - y, 0);
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int source_y = clockwise ? bitmap.width() - 1 - x : 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 = (!clockwise && 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(Gfx::Orientation orientation)
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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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auto vertical = orientation == Gfx::Orientation::Vertical;
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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 = vertical ? x : bitmap.width() - 1 - x;
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int source_y = vertical ? bitmap.height() - 1 - 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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}
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