imtk

annotate src/textbox.c @ 27:48e708baa7be

find changesets by author, revision, files, or words in the commit message
added predicate imtk_layout_contains(x, y)
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 12 Dec 2020 17:20:00 +0200
parents 1cf212375db3
children
rev   line source
nuclear@6 1 #include <string.h>
nuclear@6 2 #include <ctype.h>
nuclear@6 3 #include <assert.h>
nuclear@6 4 #include "imtk.h"
nuclear@6 5 #include "state.h"
nuclear@6 6 #include "draw.h"
nuclear@6 7
nuclear@6 8 #define TEXTBOX_SIZE 100
nuclear@20 9 #define TEXTBOX_HEIGHT 20
nuclear@6 10
nuclear@16 11 static void draw_textbox(int id, char *text, int cursor, int x, int y, int over);
nuclear@6 12
nuclear@6 13
nuclear@6 14 void imtk_textbox(int id, char *textbuf, size_t buf_sz, int x, int y)
nuclear@6 15 {
nuclear@16 16 int key, len, cursor = 0, over = 0;
nuclear@6 17
nuclear@6 18 assert(id >= 0);
nuclear@6 19
nuclear@20 20 if(x == IMTK_AUTO || y == IMTK_AUTO) {
nuclear@20 21 imtk_layout_get_pos(&x, &y);
nuclear@20 22 }
nuclear@20 23
nuclear@16 24 len = strlen(textbuf);
nuclear@16 25
nuclear@16 26 /* HACK! using last element of textbuf for saving cursor position */
nuclear@16 27 if((cursor = textbuf[buf_sz - 1]) > len || cursor < 0) {
nuclear@16 28 cursor = len;
nuclear@16 29 }
nuclear@16 30
nuclear@20 31 if(imtk_hit_test(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT)) {
nuclear@6 32 imtk_set_hot(id);
nuclear@6 33 over = 1;
nuclear@6 34 }
nuclear@6 35
nuclear@6 36 if(imtk_button_state(IMTK_LEFT_BUTTON)) {
nuclear@6 37 if(over) {
nuclear@6 38 imtk_set_active(id);
nuclear@6 39 }
nuclear@6 40 } else {
nuclear@6 41 if(imtk_is_active(id)) {
nuclear@6 42 imtk_set_active(-1);
nuclear@6 43 if(imtk_is_hot(id) && over) {
nuclear@6 44 imtk_set_focus(id);
nuclear@6 45 }
nuclear@6 46 }
nuclear@6 47 }
nuclear@6 48
nuclear@6 49 if(imtk_has_focus(id)) {
nuclear@6 50 while((key = imtk_get_key()) != -1) {
nuclear@16 51 if(!(key & 0xff00) && isprint(key)) {
nuclear@16 52 if(len < buf_sz - 1) {
nuclear@16 53 if(cursor == len) {
nuclear@16 54 textbuf[len++] = (char)key;
nuclear@16 55 cursor = len;
nuclear@16 56 } else {
nuclear@16 57 memmove(textbuf + cursor + 1, textbuf + cursor, len - cursor);
nuclear@16 58 len++;
nuclear@16 59 textbuf[cursor++] = (char)key;
nuclear@16 60 }
nuclear@6 61 }
nuclear@6 62 } else {
nuclear@16 63 key &= 0xff;
nuclear@16 64
nuclear@6 65 switch(key) {
nuclear@6 66 case '\b':
nuclear@16 67 if(cursor > 0) {
nuclear@16 68 if(cursor == len) {
nuclear@16 69 textbuf[--cursor] = 0;
nuclear@16 70 } else {
nuclear@16 71 memmove(textbuf + cursor - 1, textbuf + cursor, len - cursor);
nuclear@16 72 textbuf[--len] = 0;
nuclear@16 73 cursor--;
nuclear@16 74 }
nuclear@16 75 }
nuclear@16 76 break;
nuclear@16 77
nuclear@16 78 case 127: /* del */
nuclear@16 79 if(cursor < len) {
nuclear@16 80 memmove(textbuf + cursor, textbuf + cursor + 1, len - cursor);
nuclear@6 81 textbuf[--len] = 0;
nuclear@6 82 }
nuclear@6 83 break;
nuclear@6 84
nuclear@16 85 case GLUT_KEY_LEFT:
nuclear@16 86 if(cursor > 0) {
nuclear@16 87 cursor--;
nuclear@16 88 }
nuclear@16 89 break;
nuclear@16 90
nuclear@16 91 case GLUT_KEY_RIGHT:
nuclear@16 92 if(cursor < len) {
nuclear@16 93 cursor++;
nuclear@16 94 }
nuclear@16 95 break;
nuclear@16 96
nuclear@16 97 case GLUT_KEY_HOME:
nuclear@16 98 cursor = 0;
nuclear@16 99 break;
nuclear@16 100
nuclear@16 101 case GLUT_KEY_END:
nuclear@16 102 cursor = len;
nuclear@16 103 break;
nuclear@16 104
nuclear@6 105 default:
nuclear@6 106 break;
nuclear@6 107 }
nuclear@6 108 }
nuclear@6 109 }
nuclear@6 110 }
nuclear@6 111
nuclear@16 112 textbuf[buf_sz - 1] = cursor;
nuclear@16 113 draw_textbox(id, textbuf, cursor, x, y, over);
nuclear@20 114 imtk_layout_advance(TEXTBOX_SIZE, TEXTBOX_HEIGHT);
nuclear@6 115 }
nuclear@6 116
nuclear@6 117
nuclear@16 118 static void draw_textbox(int id, char *text, int cursor, int x, int y, int over)
nuclear@6 119 {
nuclear@14 120 float tcol[4], bcol[4];
nuclear@14 121 unsigned int attr = 0;
nuclear@6 122
nuclear@14 123 if(over) {
nuclear@14 124 attr |= IMTK_FOCUS_BIT;
nuclear@6 125 }
nuclear@14 126 memcpy(tcol, imtk_get_color(IMTK_BOTTOM_COLOR | attr), sizeof tcol);
nuclear@14 127 memcpy(bcol, imtk_get_color(IMTK_TOP_COLOR | attr), sizeof bcol);
nuclear@6 128
nuclear@20 129 imtk_draw_rect(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT, tcol, bcol);
nuclear@6 130
nuclear@6 131 if(imtk_has_focus(id)) {
nuclear@16 132 int strsz;
nuclear@16 133 char tmp;
nuclear@16 134
nuclear@16 135 tmp = text[cursor];
nuclear@16 136 text[cursor] = 0;
nuclear@16 137 strsz = imtk_string_size(text);
nuclear@16 138 text[cursor] = tmp;
nuclear@16 139
nuclear@16 140 glBegin(GL_QUADS);
nuclear@13 141 glColor4fv(imtk_get_color(IMTK_CURSOR_COLOR));
nuclear@16 142 glVertex2f(x + strsz + 2, y + 2);
nuclear@8 143 glVertex2f(x + strsz + 4, y + 2);
nuclear@8 144 glVertex2f(x + strsz + 4, y + 18);
nuclear@16 145 glVertex2f(x + strsz + 2, y + 18);
nuclear@6 146 glEnd();
nuclear@6 147 }
nuclear@6 148
nuclear@8 149 glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));
nuclear@6 150 imtk_draw_string(x + 2, y + 15, text);
nuclear@6 151
nuclear@20 152 imtk_draw_frame(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT, FRAME_INSET);
nuclear@6 153 }
nuclear@6 154