2020-11-26 02:28:57 +03:00
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// Copyright (c) 2020 Raúl Hernández. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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2020-11-12 14:12:51 +03:00
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module main
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import term.ui as tui
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// The color palette, taken from Google's Material design
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const (
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colors = [
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[
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2020-11-13 12:49:09 +03:00
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tui.Color{239, 154, 154},
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tui.Color{244, 143, 177},
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tui.Color{206, 147, 216},
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tui.Color{179, 157, 219},
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tui.Color{159, 168, 218},
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tui.Color{144, 202, 249},
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tui.Color{129, 212, 250},
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tui.Color{128, 222, 234},
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tui.Color{128, 203, 196},
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tui.Color{165, 214, 167},
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tui.Color{197, 225, 165},
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tui.Color{230, 238, 156},
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tui.Color{255, 245, 157},
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tui.Color{255, 224, 130},
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tui.Color{255, 204, 128},
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tui.Color{255, 171, 145},
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tui.Color{188, 170, 164},
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tui.Color{238, 238, 238},
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tui.Color{176, 190, 197},
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],
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[
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tui.Color{244, 67, 54},
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tui.Color{233, 30, 99},
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tui.Color{156, 39, 176},
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tui.Color{103, 58, 183},
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tui.Color{63, 81, 181},
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tui.Color{33, 150, 243},
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tui.Color{3, 169, 244},
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tui.Color{0, 188, 212},
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tui.Color{0, 150, 136},
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tui.Color{76, 175, 80},
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tui.Color{139, 195, 74},
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tui.Color{205, 220, 57},
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tui.Color{255, 235, 59},
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tui.Color{255, 193, 7},
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tui.Color{255, 152, 0},
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tui.Color{255, 87, 34},
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tui.Color{121, 85, 72},
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tui.Color{120, 120, 120},
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tui.Color{96, 125, 139},
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],
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[
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tui.Color{198, 40, 40},
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tui.Color{173, 20, 87},
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tui.Color{106, 27, 154},
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tui.Color{69, 39, 160},
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tui.Color{40, 53, 147},
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tui.Color{21, 101, 192},
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tui.Color{2, 119, 189},
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tui.Color{0, 131, 143},
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tui.Color{0, 105, 92},
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tui.Color{46, 125, 50},
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tui.Color{85, 139, 47},
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tui.Color{158, 157, 36},
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tui.Color{249, 168, 37},
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tui.Color{255, 143, 0},
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tui.Color{239, 108, 0},
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tui.Color{216, 67, 21},
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tui.Color{78, 52, 46},
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tui.Color{33, 33, 33},
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tui.Color{55, 71, 79},
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],
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]
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)
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const (
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frame_rate = 30 // fps
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msg_display_time = 5 * frame_rate
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w = 200
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h = 100
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space = ' '
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spaces = ' '
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select_color = 'Select color: '
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select_size = 'Size: + -'
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help_1 = '╭────────╮'
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help_2 = '│ HELP │'
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help_3 = '╰────────╯'
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2020-11-12 14:12:51 +03:00
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)
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struct App {
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mut:
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2020-11-14 22:05:22 +03:00
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tui &tui.Context = 0
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header_text []string
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mouse_pos Point
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msg string
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msg_hide_tick int
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primary_color tui.Color = colors[1][6]
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secondary_color tui.Color = colors[1][9]
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primary_color_idx int = 25
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secondary_color_idx int = 28
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bg_color tui.Color = tui.Color{0, 0, 0}
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drawing [][]tui.Color = [][]tui.Color{len: h, init: []tui.Color{len: w}}
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size int = 1
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should_redraw bool = true
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is_dragging bool
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}
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struct Point {
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mut:
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x int
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y int
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}
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fn main() {
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mut app := &App{}
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app.tui = tui.init({
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user_data: app
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frame_fn: frame
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event_fn: event
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frame_rate: frame_rate
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hide_cursor: true
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2020-11-13 16:30:47 +03:00
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window_title: 'V terminal pixelart drawing app'
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})
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app.mouse_pos.x = 40
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app.mouse_pos.y = 15
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app.tui.clear()
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2020-11-12 14:12:51 +03:00
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app.tui.run()
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}
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fn frame(x voidptr) {
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mut app := &App(x)
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mut redraw := app.should_redraw
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if app.msg != '' && app.tui.frame_count >= app.msg_hide_tick {
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app.msg = ''
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redraw = true
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}
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if redraw {
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app.render(false)
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app.should_redraw = false
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}
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}
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fn event(event &tui.Event, x voidptr) {
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mut app := &App(x)
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match event.typ {
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.mouse_down {
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app.is_dragging = true
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if app.tui.window_height - event.y < 5 {
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app.footer_click(event)
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} else {
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app.paint(event)
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}
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}
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.mouse_up {
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app.is_dragging = false
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}
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.mouse_drag {
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app.mouse_pos = {
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x: event.x
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y: event.y
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}
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app.paint(event)
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}
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.mouse_move {
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app.mouse_pos = {
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x: event.x
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y: event.y
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}
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}
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.mouse_scroll {
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2020-11-14 10:14:54 +03:00
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app.mouse_pos = {
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x: event.x
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y: event.y
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}
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2020-11-14 22:05:22 +03:00
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d := event.direction == .down
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if event.modifiers & tui.ctrl != 0 {
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p := event.modifiers & tui.shift == 0
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c := if d {
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if p { app.primary_color_idx - 1 } else { app.secondary_color_idx - 1 }
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} else {
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if p { app.primary_color_idx + 1 } else { app.secondary_color_idx + 1 }
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}
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app.select_color(p, c)
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} else {
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if d { app.inc_size() } else { app.dec_size() }
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}
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}
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.key_down {
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match event.code {
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.f1, ._1 {
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oevent := *event
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nevent := { oevent | button: tui.MouseButton.left, x: app.mouse_pos.x , y: app.mouse_pos.y }
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2020-11-13 14:08:28 +03:00
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app.paint(nevent)
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}
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.f2, ._2 {
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oevent := *event
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nevent := { oevent | button: tui.MouseButton.right, x: app.mouse_pos.x , y: app.mouse_pos.y }
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app.paint(nevent)
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}
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.space {
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oevent := *event
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nevent := { oevent | button: tui.MouseButton.middle, x: app.mouse_pos.x , y: app.mouse_pos.y }
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app.paint(nevent)
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}
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.j, .down {
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if event.modifiers & tui.shift != 0 {
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app.set_pixel((1 + app.mouse_pos.x) / 2, app.mouse_pos.y, app.primary_color)
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}
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app.mouse_pos.y++
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}
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.k, .up {
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if event.modifiers & tui.shift != 0 {
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app.set_pixel((1 + app.mouse_pos.x) / 2, app.mouse_pos.y, app.primary_color)
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}
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app.mouse_pos.y--
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}
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.h, .left {
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if event.modifiers & tui.shift != 0 {
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app.set_pixel((1 + app.mouse_pos.x) / 2, app.mouse_pos.y, app.primary_color)
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}
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app.mouse_pos.x -= 2
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}
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.l, .right {
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if event.modifiers & tui.shift != 0 {
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app.set_pixel((1 + app.mouse_pos.x) / 2, app.mouse_pos.y, app.primary_color)
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}
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app.mouse_pos.x += 2
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}
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.t {
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2020-11-14 22:05:22 +03:00
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p := event.modifiers & tui.alt == 0
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c := if event.modifiers & tui.shift != 0 {
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if p { app.primary_color_idx - 19 } else { app.secondary_color_idx - 19 }
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} else {
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if p { app.primary_color_idx + 19 } else { app.secondary_color_idx + 19 }
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}
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app.select_color(p, c)
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}
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.r {
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p := event.modifiers & tui.alt == 0
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c := if event.modifiers & tui.shift != 0 {
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if p { app.primary_color_idx - 1 } else { app.secondary_color_idx - 1 }
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} else {
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if p { app.primary_color_idx + 1 } else { app.secondary_color_idx + 1 }
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}
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app.select_color(p, c)
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}
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.plus {
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app.inc_size()
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}
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.minus {
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app.dec_size()
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}
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.c {
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app.drawing = [][]tui.Color{len: h, init: []tui.Color{len: w}}
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}
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.q, .escape {
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app.render(true)
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exit(0)
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}
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else {}
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}
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}
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else {}
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}
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app.should_redraw = true
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}
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fn (mut app App) render(paint_only bool) {
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app.tui.clear()
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app.draw_header()
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app.draw_content()
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if !paint_only {
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app.draw_footer()
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app.draw_cursor()
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}
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app.tui.flush()
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}
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fn (mut app App) select_color(primary bool, idx int) {
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c := (idx + 57) % 57
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cx := c % 19
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cy := (c / 19) % 3
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color := colors[cy][cx]
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if primary {
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app.primary_color_idx = c % (19 * 3)
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app.primary_color = color
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} else {
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app.secondary_color_idx = c % (19 * 3)
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app.secondary_color = color
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}
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c_str := if primary { 'primary' } else { 'secondary' }
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app.show_msg('set $c_str color idx: $idx', 1)
|
|
|
|
|
}
|
|
|
|
|
|
2020-11-12 14:12:51 +03:00
|
|
|
|
fn (mut app App) set_pixel(x_ int, y_ int, c tui.Color) {
|
|
|
|
|
// Term coords start at 1, and adjust for the header
|
|
|
|
|
x, y := x_ - 1, y_ - 4
|
2020-11-13 12:49:09 +03:00
|
|
|
|
if y < 0 || app.tui.window_height - y < 3 {
|
|
|
|
|
return
|
|
|
|
|
}
|
|
|
|
|
if y >= app.drawing.len || x < 0 || x >= app.drawing[0].len {
|
|
|
|
|
return
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.drawing[y][x] = c
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) paint(event &tui.Event) {
|
2020-11-14 22:05:22 +03:00
|
|
|
|
if event.y < 4 || app.tui.window_height - event.y < 4 {
|
|
|
|
|
return
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
x_start, y_start := int(f32((event.x - 1) / 2) - app.size / 2 + 1), event.y - app.size / 2
|
2020-11-13 14:08:28 +03:00
|
|
|
|
color := match event.button {
|
2020-11-14 10:14:54 +03:00
|
|
|
|
.left { app.primary_color }
|
|
|
|
|
.right { app.secondary_color }
|
2020-11-13 14:08:28 +03:00
|
|
|
|
else { app.bg_color }
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
for x in x_start .. x_start + app.size {
|
|
|
|
|
for y in y_start .. y_start + app.size {
|
|
|
|
|
app.set_pixel(x, y, color)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) draw_content() {
|
|
|
|
|
w, mut h := app.tui.window_width / 2, app.tui.window_height - 8
|
|
|
|
|
if h > app.drawing.len {
|
|
|
|
|
h = app.drawing.len
|
|
|
|
|
}
|
|
|
|
|
for row_idx, row in app.drawing[..h] {
|
|
|
|
|
app.tui.set_cursor_position(0, row_idx + 4)
|
2020-11-13 12:49:09 +03:00
|
|
|
|
mut last := tui.Color{0, 0, 0}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
for cell in row[..w] {
|
|
|
|
|
if cell.r == 0 && cell.g == 0 && cell.b == 0 {
|
|
|
|
|
if !(cell.r == last.r && cell.g == last.g && cell.b == last.b) {
|
|
|
|
|
app.tui.reset()
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if !(cell.r == last.r && cell.g == last.g && cell.b == last.b) {
|
|
|
|
|
app.tui.set_bg_color(cell)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
app.tui.write(spaces)
|
|
|
|
|
last = cell
|
|
|
|
|
}
|
|
|
|
|
app.tui.reset()
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) draw_cursor() {
|
|
|
|
|
if app.mouse_pos.y in [3, app.tui.window_height - 5] {
|
|
|
|
|
// inside the horizontal separators
|
|
|
|
|
return
|
|
|
|
|
}
|
2020-11-13 12:49:09 +03:00
|
|
|
|
cursor_color := if app.is_dragging { tui.Color{220, 220, 220} } else { tui.Color{160, 160, 160} }
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.set_bg_color(cursor_color)
|
|
|
|
|
if app.mouse_pos.y >= 3 && app.mouse_pos.y <= app.tui.window_height - 4 {
|
|
|
|
|
// inside the main content
|
|
|
|
|
mut x_start := int(f32((app.mouse_pos.x - 1) / 2) - app.size / 2 + 1) * 2 - 1
|
|
|
|
|
mut y_start := app.mouse_pos.y - app.size / 2
|
|
|
|
|
mut x_end := x_start + app.size * 2 - 1
|
|
|
|
|
mut y_end := y_start + app.size - 1
|
2020-11-13 12:49:09 +03:00
|
|
|
|
if x_start < 1 {
|
|
|
|
|
x_start = 1
|
|
|
|
|
}
|
|
|
|
|
if y_start < 4 {
|
|
|
|
|
y_start = 4
|
|
|
|
|
}
|
|
|
|
|
if x_end > app.tui.window_width {
|
|
|
|
|
x_end = app.tui.window_width
|
|
|
|
|
}
|
|
|
|
|
if y_end > app.tui.window_height - 5 {
|
|
|
|
|
y_end = app.tui.window_height - 5
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.draw_rect(x_start, y_start, x_end, y_end)
|
|
|
|
|
} else {
|
|
|
|
|
app.tui.draw_text(app.mouse_pos.x, app.mouse_pos.y, space)
|
|
|
|
|
}
|
|
|
|
|
app.tui.reset()
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) draw_header() {
|
|
|
|
|
if app.msg != '' {
|
2020-11-13 12:49:09 +03:00
|
|
|
|
app.tui.set_color({
|
|
|
|
|
r: 0
|
|
|
|
|
g: 0
|
|
|
|
|
b: 0
|
|
|
|
|
})
|
|
|
|
|
app.tui.set_bg_color({
|
|
|
|
|
r: 220
|
|
|
|
|
g: 220
|
|
|
|
|
b: 220
|
|
|
|
|
})
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.draw_text(0, 0, ' $app.msg ')
|
|
|
|
|
app.tui.reset()
|
2020-11-14 10:14:54 +03:00
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.draw_text(3, 2, /* 'tick: $app.tui.frame_count | ' + */ 'terminal size: ($app.tui.window_width, $app.tui.window_height) | primary color: $app.primary_color.hex() | secondary color: $app.secondary_color.hex()')
|
|
|
|
|
app.tui.horizontal_separator(3)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) draw_footer() {
|
2020-11-14 10:14:54 +03:00
|
|
|
|
_, wh := app.tui.window_width, app.tui.window_height
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.horizontal_separator(wh - 4)
|
|
|
|
|
for i, color_row in colors {
|
|
|
|
|
for j, color in color_row {
|
|
|
|
|
x := j * 3 + 19
|
|
|
|
|
y := wh - 3 + i
|
|
|
|
|
app.tui.set_bg_color(color)
|
2020-11-14 22:05:22 +03:00
|
|
|
|
if app.primary_color_idx == j + (i * 19) {
|
|
|
|
|
app.tui.set_color(r: 0, g: 0, b: 0)
|
|
|
|
|
app.tui.draw_text(x, y, '><')
|
|
|
|
|
app.tui.reset_color()
|
|
|
|
|
} else if app.secondary_color_idx == j + (i * 19) {
|
|
|
|
|
app.tui.set_color(r: 255, g: 255, b: 255)
|
2020-11-13 12:49:09 +03:00
|
|
|
|
app.tui.draw_text(x, y, '><')
|
|
|
|
|
app.tui.reset_color()
|
|
|
|
|
} else {
|
|
|
|
|
app.tui.draw_rect(x, y, x + 1, y)
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
app.tui.reset_bg_color()
|
|
|
|
|
app.tui.draw_text(3, wh - 3, select_color)
|
|
|
|
|
app.tui.bold()
|
2020-11-13 12:49:09 +03:00
|
|
|
|
app.tui.draw_text(3, wh - 1, '$select_size $app.size')
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.tui.reset()
|
2020-11-14 10:14:54 +03:00
|
|
|
|
|
2020-11-13 16:30:47 +03:00
|
|
|
|
// TODO: help button
|
|
|
|
|
// if ww >= 90 {
|
|
|
|
|
// app.tui.draw_text(80, wh - 3, help_1)
|
|
|
|
|
// app.tui.draw_text(80, wh - 2, help_2)
|
|
|
|
|
// app.tui.draw_text(80, wh - 1, help_3)
|
|
|
|
|
// }
|
2020-11-12 14:12:51 +03:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
[inline]
|
|
|
|
|
fn (mut app App) inc_size() {
|
2020-11-14 22:05:22 +03:00
|
|
|
|
if app.size < 30 {
|
2020-11-13 12:49:09 +03:00
|
|
|
|
app.size++
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.show_msg('inc. size: $app.size', 1)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
[inline]
|
|
|
|
|
fn (mut app App) dec_size() {
|
2020-11-13 12:49:09 +03:00
|
|
|
|
if app.size > 1 {
|
|
|
|
|
app.size--
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.show_msg('dec. size: $app.size', 1)
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) footer_click(event &tui.Event) {
|
|
|
|
|
footer_y := 3 - (app.tui.window_height - event.y)
|
|
|
|
|
match event.x {
|
|
|
|
|
8...11 {
|
|
|
|
|
app.inc_size()
|
2020-11-13 12:49:09 +03:00
|
|
|
|
}
|
|
|
|
|
12...15 {
|
2020-11-12 14:12:51 +03:00
|
|
|
|
app.dec_size()
|
2020-11-13 12:49:09 +03:00
|
|
|
|
}
|
|
|
|
|
18...75 {
|
|
|
|
|
if (event.x % 3) == 0 {
|
|
|
|
|
// Inside the gap between tiles
|
|
|
|
|
return
|
|
|
|
|
}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
idx := footer_y * 19 - 6 + event.x / 3
|
2020-11-13 16:30:47 +03:00
|
|
|
|
if idx < 0 || idx > 56 { return }
|
2020-11-14 22:05:22 +03:00
|
|
|
|
app.select_color(event.button == .left, idx)
|
2020-11-13 12:49:09 +03:00
|
|
|
|
}
|
|
|
|
|
else {}
|
2020-11-12 14:12:51 +03:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fn (mut app App) show_msg(text string, time int) {
|
|
|
|
|
frames := time * frame_rate
|
|
|
|
|
app.msg_hide_tick = if time > 0 { int(app.tui.frame_count) + frames } else { -1 }
|
|
|
|
|
app.msg = text
|
|
|
|
|
}
|