X-Git-Url: http://git.mutantstargoat.com?p=faros-demo;a=blobdiff_plain;f=src%2Fui.cc;fp=src%2Fui.cc;h=6c77970dbfb5d275e58f700adbdf95cab2e8eaad;hp=0000000000000000000000000000000000000000;hb=1aaca3876c029a6558d193bf315e2ce188ce1d79;hpb=3ab4c732d6d2b7dccfe34f1ae7be9025ef79611b

diff --git a/src/ui.cc b/src/ui.cc
new file mode 100644
index 0000000..6c77970
--- /dev/null
+++ b/src/ui.cc
@@ -0,0 +1,109 @@
+#include <stdio.h>
+#include <stdarg.h>
+#include <alloca.h>
+#include <GL/glut.h>
+#include "ui.h"
+
+extern int win_width, win_height;
+
+extern bool anim_stopped;
+extern long anim_time;
+
+
+bool init_ui()
+{
+	return true;
+}
+
+void destroy_ui()
+{
+}
+
+void ui()
+{
+	glPushAttrib(GL_ENABLE_BIT);
+	glDisable(GL_DEPTH_TEST);
+
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+	glLoadIdentity();
+	glMatrixMode(GL_PROJECTION);
+	glPushMatrix();
+	glLoadIdentity();
+	glOrtho(0, win_width, win_height, 0, -1, 1);
+
+	glEnable(GL_BLEND);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+	if(anim_stopped) {
+		glBegin(GL_QUADS);
+		glColor3f(1, 1, 1);
+		glVertex2f(10, 10);
+		glVertex2f(10, 50);
+		glVertex2f(22, 50);
+		glVertex2f(22, 10);
+		glVertex2f(30, 10);
+		glVertex2f(30, 50);
+		glVertex2f(42, 50);
+		glVertex2f(42, 10);
+		glEnd();
+	}
+
+	glColor3f(1, 0.9, 0.5);
+	gl_printf(win_width - 100, 20, "%4ld.%03ld", anim_time / 1000, anim_time % 1000);
+
+	glPopMatrix();
+	glMatrixMode(GL_MODELVIEW);
+	glPopMatrix();
+
+	glPopAttrib();
+}
+
+void gl_printf(int x, int y, const char *fmt, ...)
+{
+	va_list ap;
+	int buf_size, curx, cury;
+	char *buf, tmp;
+
+	va_start(ap, fmt);
+	buf_size = vsnprintf(&tmp, 0, fmt, ap);
+	va_end(ap);
+
+	if(buf_size == -1) {
+		buf_size = 512;
+	}
+
+	buf = (char*)alloca(buf_size + 1);
+	va_start(ap, fmt);
+	vsnprintf(buf, buf_size + 1, fmt, ap);
+	va_end(ap);
+
+	static const float tabstop = 4;
+	static const float line_spacing = 18;
+
+	curx = x;
+	cury = y;
+	glRasterPos2i(x, y);
+
+	while(*buf) {
+		char c = *buf++;
+
+		switch(c) {
+		case '\r':
+			if(*buf == '\n') ++buf;
+		case '\n':
+			cury += line_spacing;
+			curx = x;
+			glRasterPos2i(curx, cury);
+			break;
+
+		case '\t':
+			curx = (curx / tabstop) * tabstop + tabstop;
+			glRasterPos2i(curx, cury);
+			break;
+
+		default:
+			glutBitmapCharacter(GLUT_BITMAP_9_BY_15, c);
+		}
+	}
+}