1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* Copyright (c) 2020, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/System.h>
#include <LibGUI/Action.h>
#include <LibGUI/Application.h>
#include <LibGUI/Icon.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Menubar.h>
#include <LibGUI/Painter.h>
#include <LibGUI/Widget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/FontDatabase.h>
#include <LibGfx/Painter.h>
#include <LibGfx/Path.h>
#include <LibMain/Main.h>
#include <unistd.h>
const int WIDTH = 780;
const int HEIGHT = 600;
class Canvas final : public GUI::Widget {
C_OBJECT(Canvas)
public:
virtual ~Canvas() override;
private:
Canvas();
RefPtr<Gfx::Bitmap> m_bitmap;
void draw();
virtual void paint_event(GUI::PaintEvent&) override;
};
Canvas::Canvas()
{
m_bitmap = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { WIDTH, HEIGHT }).release_value_but_fixme_should_propagate_errors();
draw();
}
Canvas::~Canvas()
{
}
void Canvas::paint_event(GUI::PaintEvent& event)
{
GUI::Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.draw_scaled_bitmap(rect(), *m_bitmap, m_bitmap->rect());
}
void Canvas::draw()
{
GUI::Painter painter(*m_bitmap);
painter.fill_rect({ 20, 20, 100, 100 }, Color::Magenta);
painter.draw_rect({ 20, 140, 100, 100 }, Color::Yellow);
painter.fill_rect_with_gradient(Gfx::Orientation::Horizontal, { 140, 20, 100, 100 }, Color::Yellow, Color::DarkGreen);
painter.fill_rect_with_gradient(Gfx::Orientation::Vertical, { 140, 140, 100, 100 }, Color::Red, Color::Blue);
painter.fill_rect_with_dither_pattern({ 260, 20, 100, 100 }, Color::MidGray, Color::Black);
painter.fill_rect_with_checkerboard({ 260, 140, 100, 100 }, { 10, 10 }, Color::LightGray, Color::White);
painter.draw_line({ 430, 35 }, { 465, 70 }, Color::Green);
painter.draw_line({ 465, 70 }, { 430, 105 }, Color::Green);
painter.draw_line({ 430, 105 }, { 395, 70 }, Color::Green);
painter.draw_line({ 395, 70 }, { 430, 35 }, Color::Green);
painter.draw_rect({ 395, 35, 70, 70 }, Color::Blue);
painter.draw_ellipse_intersecting({ 395, 35, 70, 70 }, Color::Red);
painter.draw_rect({ 380, 20, 100, 100 }, Color::Yellow);
painter.fill_rect({ 380, 140, 100, 100 }, Color::Blue);
painter.draw_triangle({ 430, 140 }, { 380, 140 }, { 380, 240 }, Color::Green);
painter.draw_triangle({ 430, 240 }, { 480, 140 }, { 480, 240 }, Color::Red);
painter.draw_rect({ 380, 140, 100, 100 }, Color::Yellow);
painter.draw_line({ 500, 20 }, { 750, 20 }, Color::Green, 1, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 500, 30 }, { 750, 30 }, Color::Red, 5, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 500, 45 }, { 750, 45 }, Color::Blue, 10, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 500, 60 }, { 750, 60 }, Color::Green, 1, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 500, 70 }, { 750, 70 }, Color::Red, 5, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 500, 85 }, { 750, 85 }, Color::Blue, 10, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 500, 100 }, { 750, 100 }, Color::Green, 1, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 500, 110 }, { 750, 110 }, Color::Red, 5, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 500, 125 }, { 750, 125 }, Color::Blue, 10, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 500, 140 }, { 500, 240 }, Color::Green, 1, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 510, 140 }, { 510, 240 }, Color::Red, 5, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 525, 140 }, { 525, 240 }, Color::Blue, 10, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 540, 140 }, { 540, 240 }, Color::Green, 1, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 550, 140 }, { 550, 240 }, Color::Red, 5, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 565, 140 }, { 565, 240 }, Color::Blue, 10, Gfx::Painter::LineStyle::Dotted);
painter.draw_line({ 580, 140 }, { 580, 240 }, Color::Green, 1, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 590, 140 }, { 590, 240 }, Color::Red, 5, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 605, 140 }, { 605, 240 }, Color::Blue, 10, Gfx::Painter::LineStyle::Dashed);
painter.draw_line({ 640, 190 }, { 740, 240 }, Color::Green, 1, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 640, 140 }, { 740, 240 }, Color::Red, 5, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 690, 140 }, { 740, 240 }, Color::Blue, 10, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 740, 190 }, { 640, 240 }, Color::Green, 1, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 740, 140 }, { 640, 240 }, Color::Red, 5, Gfx::Painter::LineStyle::Solid);
painter.draw_line({ 690, 140 }, { 640, 240 }, Color::Blue, 10, Gfx::Painter::LineStyle::Solid);
auto bg = Gfx::Bitmap::try_load_from_file("/res/html/misc/90s-bg.png").release_value_but_fixme_should_propagate_errors();
painter.draw_tiled_bitmap({ 20, 260, 480, 320 }, *bg);
painter.draw_line({ 40, 480 }, { 20, 260 }, Color::Red);
painter.draw_line({ 40, 480 }, { 120, 300 }, Color::Red);
painter.draw_quadratic_bezier_curve({ 40, 480 }, { 20, 260 }, { 120, 300 }, Color::Blue);
painter.draw_line({ 240, 280 }, { 80, 420 }, Color::Red, 3);
painter.draw_line({ 240, 280 }, { 260, 360 }, Color::Red, 3);
painter.draw_quadratic_bezier_curve({ 240, 280 }, { 80, 420 }, { 260, 360 }, Color::Blue, 3);
auto path = Gfx::Path();
path.move_to({ 60, 500 });
path.line_to({ 90, 540 });
path.quadratic_bezier_curve_to({ 320, 500 }, { 220, 400 });
path.line_to({ 300, 440 });
path.line_to({ 90, 460 });
path.elliptical_arc_to({ 260, 540 }, { 40, 30 }, 0, true, false);
path.close();
painter.fill_path(path, Color::Yellow, Gfx::Painter::WindingRule::EvenOdd);
auto buggie = Gfx::Bitmap::try_load_from_file("/res/graphics/buggie.png").release_value_but_fixme_should_propagate_errors();
painter.blit({ 280, 280 }, *buggie, buggie->rect(), 0.5);
painter.draw_scaled_bitmap({ 360, 280, buggie->rect().width() * 2, buggie->rect().height() * 2 }, *buggie, buggie->rect());
painter.draw_rect({ 20, 260, 480, 320 }, Color::DarkGray);
painter.draw_rect({ 520, 260, 240, 80 }, Color::DarkGray);
painter.draw_text({ 520, 260, 240, 80 }, "CenterLeft", Gfx::TextAlignment::CenterLeft, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "Center", Gfx::TextAlignment::Center, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "CenterRight", Gfx::TextAlignment::CenterRight, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "TopLeft", Gfx::TextAlignment::TopLeft, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "TopRight", Gfx::TextAlignment::TopRight, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "BottomLeft", Gfx::TextAlignment::BottomLeft, Color::White);
painter.draw_text({ 520, 260, 240, 80 }, "BottomRight", Gfx::TextAlignment::BottomRight, Color::White);
painter.draw_rect({ 520, 360, 240, 30 }, Color::DarkGray);
painter.draw_text({ 520, 360, 240, 30 }, "Emojis! 🙂😂🐞🦄", Gfx::TextAlignment::Center, Color::White);
painter.draw_rect({ 520, 410, 240, 80 }, Color::DarkGray);
painter.draw_text({ 520, 415, 240, 20 }, "Normal text", Gfx::FontDatabase::default_font(), Gfx::TextAlignment::CenterLeft, Color::Red);
painter.draw_text({ 520, 430, 240, 20 }, "Bold text", Gfx::FontDatabase::default_font().bold_variant(), Gfx::TextAlignment::CenterLeft, Color::Green);
painter.draw_text({ 520, 450, 240, 20 }, "Normal text (fixed width)", Gfx::FontDatabase::default_fixed_width_font(), Gfx::TextAlignment::CenterLeft, Color::Blue);
painter.draw_text({ 520, 465, 240, 20 }, "Bold text (fixed width)", Gfx::FontDatabase::default_fixed_width_font().bold_variant(), Gfx::TextAlignment::CenterLeft, Color::Yellow);
auto font = Gfx::BitmapFont::load_from_file("/res/fonts/PebbletonBold14.font");
painter.draw_rect({ 520, 510, 240, 30 }, Color::DarkGray);
painter.draw_text({ 520, 510, 240, 30 }, "Hello friends! :^)", *font, Gfx::TextAlignment::Center, Color::White);
painter.fill_rect({ 520, 560, 10, 20 }, Color::White);
painter.fill_rect({ 530, 560, 10, 20 }, Color::WarmGray);
painter.fill_rect({ 540, 560, 10, 20 }, Color::LightGray);
painter.fill_rect({ 550, 560, 10, 20 }, Color::MidGray);
painter.fill_rect({ 560, 560, 10, 20 }, Color::DarkGray);
painter.fill_rect({ 570, 560, 10, 20 }, Color::Black);
painter.fill_rect({ 580, 560, 10, 20 }, Color::Blue);
painter.fill_rect({ 590, 560, 10, 20 }, Color::MidBlue);
painter.fill_rect({ 600, 560, 10, 20 }, Color::DarkBlue);
painter.fill_rect({ 610, 560, 10, 20 }, Color::Cyan);
painter.fill_rect({ 620, 560, 10, 20 }, Color::MidCyan);
painter.fill_rect({ 630, 560, 10, 20 }, Color::DarkCyan);
painter.fill_rect({ 640, 560, 10, 20 }, Color::Green);
painter.fill_rect({ 650, 560, 10, 20 }, Color::MidGreen);
painter.fill_rect({ 660, 560, 10, 20 }, Color::DarkGreen);
painter.fill_rect({ 670, 560, 10, 20 }, Color::Yellow);
painter.fill_rect({ 680, 560, 10, 20 }, Color::Red);
painter.fill_rect({ 690, 560, 10, 20 }, Color::MidRed);
painter.fill_rect({ 700, 560, 10, 20 }, Color::DarkRed);
painter.fill_rect({ 710, 560, 10, 20 }, Color::Magenta);
painter.fill_rect({ 720, 560, 10, 20 }, Color::MidMagenta);
update();
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
auto app = TRY(GUI::Application::try_create(arguments));
TRY(Core::System::pledge("stdio recvfd sendfd rpath"));
TRY(Core::System::unveil("/res", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
auto window = TRY(GUI::Window::try_create());
window->set_double_buffering_enabled(true);
window->set_title("LibGfx Demo");
window->set_resizable(false);
window->resize(WIDTH, HEIGHT);
auto file_menu = TRY(window->try_add_menu("&File"));
TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([&](auto&) { app->quit(); })));
auto app_icon = TRY(GUI::Icon::try_create_default_icon("app-libgfx-demo"));
window->set_icon(app_icon.bitmap_for_size(16));
(void)TRY(window->try_set_main_widget<Canvas>());
window->show();
return app->exec();
}
|
