X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=demo_prior;a=blobdiff_plain;f=src%2Fimtk%2Ftextbox.c;fp=src%2Fimtk%2Ftextbox.c;h=8fda2f89bf158c790ffd1615f23c77460df977a2;hp=0000000000000000000000000000000000000000;hb=2f14a35e7d557da12f24056267b911f24774aa18;hpb=5eefe7b94c8d6c6caa2c10e3835ab0831a3c42a1

diff --git a/src/imtk/textbox.c b/src/imtk/textbox.c
new file mode 100644
index 0000000..8fda2f8
--- /dev/null
+++ b/src/imtk/textbox.c
@@ -0,0 +1,154 @@
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#include "imtk.h"
+#include "state.h"
+#include "draw.h"
+
+#define TEXTBOX_SIZE	100
+#define TEXTBOX_HEIGHT	20
+
+static void draw_textbox(int id, char *text, int cursor, int x, int y, int over);
+
+
+void imtk_textbox(int id, char *textbuf, size_t buf_sz, int x, int y)
+{
+	int key, len, cursor = 0, over = 0;
+
+	assert(id >= 0);
+
+	if(x == IMTK_AUTO || y == IMTK_AUTO) {
+		imtk_layout_get_pos(&x, &y);
+	}
+
+	len = strlen(textbuf);
+
+	/* HACK! using last element of textbuf for saving cursor position */
+	if((cursor = textbuf[buf_sz - 1]) > len || cursor < 0) {
+		cursor = len;
+	}
+
+	if(imtk_hit_test(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT)) {
+		imtk_set_hot(id);
+		over = 1;
+	}
+
+	if(imtk_button_state(IMTK_LEFT_BUTTON)) {
+		if(over) {
+			imtk_set_active(id);
+		}
+	} else {
+		if(imtk_is_active(id)) {
+			imtk_set_active(-1);
+			if(imtk_is_hot(id) && over) {
+				imtk_set_focus(id);
+			}
+		}
+	}
+
+	if(imtk_has_focus(id)) {
+		while((key = imtk_get_key()) != -1) {
+			if(!(key & 0xff00) && isprint(key)) {
+				if(len < buf_sz - 1) {
+					if(cursor == len) {
+						textbuf[len++] = (char)key;
+						cursor = len;
+					} else {
+						memmove(textbuf + cursor + 1, textbuf + cursor, len - cursor);
+						len++;
+						textbuf[cursor++] = (char)key;
+					}
+				}
+			} else {
+				key &= 0xff;
+
+				switch(key) {
+				case '\b':
+					if(cursor > 0) {
+						if(cursor == len) {
+							textbuf[--cursor] = 0;
+						} else {
+							memmove(textbuf + cursor - 1, textbuf + cursor, len - cursor);
+							textbuf[--len] = 0;
+							cursor--;
+						}
+					}
+					break;
+
+				case 127:	/* del */
+					if(cursor < len) {
+						memmove(textbuf + cursor, textbuf + cursor + 1, len - cursor);
+						textbuf[--len] = 0;
+					}
+					break;
+
+				case GLUT_KEY_LEFT:
+					if(cursor > 0) {
+						cursor--;
+					}
+					break;
+
+				case GLUT_KEY_RIGHT:
+					if(cursor < len) {
+						cursor++;
+					}
+					break;
+
+				case GLUT_KEY_HOME:
+					cursor = 0;
+					break;
+
+				case GLUT_KEY_END:
+					cursor = len;
+					break;
+
+				default:
+					break;
+				}
+			}
+		}
+	}
+
+	textbuf[buf_sz - 1] = cursor;
+	draw_textbox(id, textbuf, cursor, x, y, over);
+	imtk_layout_advance(TEXTBOX_SIZE, TEXTBOX_HEIGHT);
+}
+
+
+static void draw_textbox(int id, char *text, int cursor, int x, int y, int over)
+{
+	float tcol[4], bcol[4];
+	unsigned int attr = 0;
+
+	if(over) {
+		attr |= IMTK_FOCUS_BIT;
+	}
+	memcpy(tcol, imtk_get_color(IMTK_BOTTOM_COLOR | attr), sizeof tcol);
+	memcpy(bcol, imtk_get_color(IMTK_TOP_COLOR | attr), sizeof bcol);
+
+	imtk_draw_rect(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT, tcol, bcol);
+
+	if(imtk_has_focus(id)) {
+		int strsz;
+		char tmp;
+
+		tmp = text[cursor];
+		text[cursor] = 0;
+		strsz = imtk_string_size(text);
+		text[cursor] = tmp;
+
+		glBegin(GL_QUADS);
+		glColor4fv(imtk_get_color(IMTK_CURSOR_COLOR));
+		glVertex2f(x + strsz + 2, y + 2);
+		glVertex2f(x + strsz + 4, y + 2);
+		glVertex2f(x + strsz + 4, y + 18);
+		glVertex2f(x + strsz + 2, y + 18);
+		glEnd();
+	}
+
+	glColor4fv(imtk_get_color(IMTK_TEXT_COLOR));
+	imtk_draw_string(x + 2, y + 15, text);
+
+	imtk_draw_frame(x, y, TEXTBOX_SIZE, TEXTBOX_HEIGHT, FRAME_INSET);
+}
+