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annotate libs/goatkit/textbox.cc @ 6:3bccfc7d10fe

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goatkit is drawing
author John Tsiombikas <nuclear@member.fsf.org>
date Wed, 23 Sep 2015 05:44:58 +0300
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nuclear@6 1 /*
nuclear@6 2 GoatKit - a themable/animated widget toolkit for games
nuclear@6 3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org>
nuclear@6 4
nuclear@6 5 This program is free software: you can redistribute it and/or modify
nuclear@6 6 it under the terms of the GNU Lesser General Public License as published by
nuclear@6 7 the Free Software Foundation, either version 3 of the License, or
nuclear@6 8 (at your option) any later version.
nuclear@6 9
nuclear@6 10 This program is distributed in the hope that it will be useful,
nuclear@6 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@6 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
nuclear@6 13 GNU Lesser General Public License for more details.
nuclear@6 14
nuclear@6 15 You should have received a copy of the GNU Lesser General Public License
nuclear@6 16 along with this program. If not, see <http://www.gnu.org/licenses/>.
nuclear@6 17 */
nuclear@6 18 #include <ctype.h>
nuclear@6 19 #include <limits.h>
nuclear@6 20 #include <string>
nuclear@6 21 #include "textbox.h"
nuclear@6 22
nuclear@6 23 namespace goatkit {
nuclear@6 24
nuclear@6 25 struct TextBoxImpl {
nuclear@6 26 std::string text;
nuclear@6 27 int cursor;
nuclear@6 28 };
nuclear@6 29
nuclear@6 30 TextBox::TextBox()
nuclear@6 31 {
nuclear@6 32 tbox = new TextBoxImpl;
nuclear@6 33 tbox->cursor = 0;
nuclear@6 34 }
nuclear@6 35
nuclear@6 36 TextBox::~TextBox()
nuclear@6 37 {
nuclear@6 38 delete tbox;
nuclear@6 39 }
nuclear@6 40
nuclear@6 41 const char *TextBox::get_type_name() const
nuclear@6 42 {
nuclear@6 43 return "textbox";
nuclear@6 44 }
nuclear@6 45
nuclear@6 46 bool TextBox::can_focus() const
nuclear@6 47 {
nuclear@6 48 return true;
nuclear@6 49 }
nuclear@6 50
nuclear@6 51 void TextBox::clear()
nuclear@6 52 {
nuclear@6 53 tbox->text.clear();
nuclear@6 54 }
nuclear@6 55
nuclear@6 56 void TextBox::set_text(const char *t)
nuclear@6 57 {
nuclear@6 58 tbox->text = std::string(t);
nuclear@6 59 }
nuclear@6 60
nuclear@6 61 const char *TextBox::get_text() const
nuclear@6 62 {
nuclear@6 63 return tbox->text.c_str();
nuclear@6 64 }
nuclear@6 65
nuclear@6 66 int TextBox::set_cursor(int idx)
nuclear@6 67 {
nuclear@6 68 int len = tbox->text.size();
nuclear@6 69
nuclear@6 70 if(idx < 0) {
nuclear@6 71 tbox->cursor = 0;
nuclear@6 72 } else if(idx > len) {
nuclear@6 73 tbox->cursor = len;
nuclear@6 74 } else {
nuclear@6 75 tbox->cursor = idx;
nuclear@6 76 }
nuclear@6 77 return tbox->cursor;
nuclear@6 78 }
nuclear@6 79
nuclear@6 80 int TextBox::get_cursor() const
nuclear@6 81 {
nuclear@6 82 return tbox->cursor;
nuclear@6 83 }
nuclear@6 84
nuclear@6 85 int TextBox::cursor_begin()
nuclear@6 86 {
nuclear@6 87 return tbox->cursor = 0;
nuclear@6 88 }
nuclear@6 89
nuclear@6 90 int TextBox::cursor_end()
nuclear@6 91 {
nuclear@6 92 return set_cursor(INT_MAX);
nuclear@6 93 }
nuclear@6 94
nuclear@6 95 int TextBox::cursor_prev()
nuclear@6 96 {
nuclear@6 97 return set_cursor(tbox->cursor - 1);
nuclear@6 98 }
nuclear@6 99
nuclear@6 100 int TextBox::cursor_next()
nuclear@6 101 {
nuclear@6 102 return set_cursor(tbox->cursor + 1);
nuclear@6 103 }
nuclear@6 104
nuclear@6 105 void TextBox::insert(char c)
nuclear@6 106 {
nuclear@6 107 int len = tbox->text.size();
nuclear@6 108 if(tbox->cursor >= len) {
nuclear@6 109 tbox->text.push_back(c);
nuclear@6 110 tbox->cursor++;
nuclear@6 111 } else {
nuclear@6 112 tbox->text.insert(tbox->cursor++, 1, c);
nuclear@6 113 }
nuclear@6 114 }
nuclear@6 115
nuclear@6 116 void TextBox::on_key(const KeyEvent &ev)
nuclear@6 117 {
nuclear@6 118 if(!ev.press) return; // ignore key release events
nuclear@6 119
nuclear@6 120 switch(ev.key) {
nuclear@6 121 case KEY_LEFT:
nuclear@6 122 cursor_prev();
nuclear@6 123 break;
nuclear@6 124
nuclear@6 125 case KEY_RIGHT:
nuclear@6 126 cursor_next();
nuclear@6 127 break;
nuclear@6 128
nuclear@6 129 case KEY_HOME:
nuclear@6 130 cursor_begin();
nuclear@6 131 break;
nuclear@6 132
nuclear@6 133 case KEY_END:
nuclear@6 134 cursor_end();
nuclear@6 135 break;
nuclear@6 136
nuclear@6 137 case KEY_DELETE:
nuclear@6 138 tbox->text.erase(tbox->cursor, 1);
nuclear@6 139 break;
nuclear@6 140
nuclear@6 141 case '\b':
nuclear@6 142 if(tbox->cursor > 0) {
nuclear@6 143 tbox->text.erase(--tbox->cursor, 1);
nuclear@6 144 }
nuclear@6 145 break;
nuclear@6 146
nuclear@6 147 case '\n':
nuclear@6 148 case '\t':
nuclear@6 149 {
nuclear@6 150 Event ev;
nuclear@6 151 ev.type = EV_CHANGE;
nuclear@6 152 handle_event(ev);
nuclear@6 153 }
nuclear@6 154 break;
nuclear@6 155
nuclear@6 156 default:
nuclear@6 157 if(isprint(ev.key)) {
nuclear@6 158 insert(ev.key);
nuclear@6 159 }
nuclear@6 160 }
nuclear@6 161 }
nuclear@6 162
nuclear@6 163 void TextBox::on_click()
nuclear@6 164 {
nuclear@6 165 // TODO place cursor
nuclear@6 166 }
nuclear@6 167
nuclear@6 168 } // namespace goatkit