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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "GlyphEditorWidget.h"
28#include <LibGUI/Painter.h>
29#include <LibGfx/Font.h>
30#include <LibGfx/Palette.h>
31
32GlyphEditorWidget::GlyphEditorWidget(Gfx::Font& mutable_font)
33 : m_font(mutable_font)
34{
35 set_relative_rect({ 0, 0, preferred_width(), preferred_height() });
36}
37
38GlyphEditorWidget::~GlyphEditorWidget()
39{
40}
41
42void GlyphEditorWidget::set_glyph(u8 glyph)
43{
44 if (m_glyph == glyph)
45 return;
46 m_glyph = glyph;
47 update();
48}
49
50void GlyphEditorWidget::paint_event(GUI::PaintEvent& event)
51{
52 GUI::Frame::paint_event(event);
53
54 GUI::Painter painter(*this);
55 painter.add_clip_rect(frame_inner_rect());
56 painter.add_clip_rect(event.rect());
57 painter.fill_rect(frame_inner_rect(), palette().base());
58 painter.translate(frame_thickness(), frame_thickness());
59
60 painter.translate(-1, -1);
61 for (int y = 1; y < font().glyph_height(); ++y)
62 painter.draw_line({ 0, y * m_scale }, { font().max_glyph_width() * m_scale, y * m_scale }, palette().threed_shadow2());
63
64 for (int x = 1; x < font().max_glyph_width(); ++x)
65 painter.draw_line({ x * m_scale, 0 }, { x * m_scale, font().glyph_height() * m_scale }, palette().threed_shadow2());
66
67 auto bitmap = font().glyph_bitmap(m_glyph);
68
69 for (int y = 0; y < font().glyph_height(); ++y) {
70 for (int x = 0; x < font().max_glyph_width(); ++x) {
71 Gfx::Rect rect { x * m_scale, y * m_scale, m_scale, m_scale };
72 if (x >= font().glyph_width(m_glyph)) {
73 painter.fill_rect(rect, palette().threed_shadow1());
74 } else {
75 if (bitmap.bit_at(x, y))
76 painter.fill_rect(rect, palette().base_text());
77 }
78 }
79 }
80}
81
82void GlyphEditorWidget::mousedown_event(GUI::MouseEvent& event)
83{
84 draw_at_mouse(event);
85}
86
87void GlyphEditorWidget::mousemove_event(GUI::MouseEvent& event)
88{
89 if (event.buttons() & (GUI::MouseButton::Left | GUI::MouseButton::Right))
90 draw_at_mouse(event);
91}
92
93void GlyphEditorWidget::draw_at_mouse(const GUI::MouseEvent& event)
94{
95 bool set = event.buttons() & GUI::MouseButton::Left;
96 bool unset = event.buttons() & GUI::MouseButton::Right;
97 if (!(set ^ unset))
98 return;
99 int x = (event.x() - 1) / m_scale;
100 int y = (event.y() - 1) / m_scale;
101 auto bitmap = font().glyph_bitmap(m_glyph);
102 if (x >= bitmap.width())
103 return;
104 if (y >= bitmap.height())
105 return;
106 if (bitmap.bit_at(x, y) == set)
107 return;
108 bitmap.set_bit_at(x, y, set);
109 if (on_glyph_altered)
110 on_glyph_altered(m_glyph);
111 update();
112}
113
114int GlyphEditorWidget::preferred_width() const
115{
116 return frame_thickness() * 2 + font().max_glyph_width() * m_scale - 1;
117}
118
119int GlyphEditorWidget::preferred_height() const
120{
121 return frame_thickness() * 2 + font().glyph_height() * m_scale - 1;
122}