+++ /dev/null
-/* glxfonts, Copyright (c) 2001-2014 Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- *
- * Draws 2D text over the GL scene, e.g., the FPS displays.
- * Also billboarding.
- * The lower-level character rendering code is in texfont.c.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <ctype.h>
-
-#ifdef HAVE_COCOA
-# include "jwxyz.h"
-/*# include <AGL/agl.h>*/
-#else
-# include <GL/glx.h>
-# include <GL/glu.h>
-#endif
-
-#ifdef HAVE_JWZGLES
-# include "jwzgles.h"
-#endif /* HAVE_JWZGLES */
-
-#include "resources.h"
-#include "glxfonts.h"
-#include "texfont.h"
-#include "fps.h"
-
-
-/* These are in xlock-gl.c */
-extern void clear_gl_error (void);
-extern void check_gl_error (const char *type);
-
-/* screenhack.h */
-extern char *progname;
-
-
-#undef DEBUG /* Defining this causes check_gl_error() to be called inside
- time-critical sections, which could slow things down (since
- it might result in a round-trip, and stall of the pipeline.)
- */
-
-#undef countof
-#define countof(x) (sizeof((x))/sizeof((*x)))
-
-
-/* Draws the string on the window at the given pixel position.
- Newlines and tab stops are honored.
- Any numbers inside [] will be rendered as a subscript.
- Assumes the font has been loaded as with load_texture_font().
-
- If width and height are 0, then instead the text is placed
- into the 3D scene at the origin, billboarded to face the
- viewer.
- */
-void
-print_gl_string (Display *dpy,
- texture_font_data *data,
- int window_width, int window_height,
- GLfloat x, GLfloat y,
- const char *string,
- Bool clear_background_p)
-{
- Bool in_scene_p = (window_width == 0);
-
- int line_height = 0;
- int lines = 0;
- const char *c;
- GLfloat color[4];
-
- Bool tex_p = glIsEnabled (GL_TEXTURE_2D);
- Bool texs_p = glIsEnabled (GL_TEXTURE_GEN_S);
- Bool text_p = glIsEnabled (GL_TEXTURE_GEN_T);
- Bool light_p = glIsEnabled (GL_LIGHTING);
- Bool blend_p = glIsEnabled (GL_BLEND);
- Bool depth_p = glIsEnabled (GL_DEPTH_TEST);
- Bool cull_p = glIsEnabled (GL_CULL_FACE);
- Bool fog_p = glIsEnabled (GL_FOG);
- GLint oblend;
- GLint ovp[4];
-
-# ifndef HAVE_JWZGLES
- GLint opoly[2];
- glGetIntegerv (GL_POLYGON_MODE, opoly);
-# endif
-
- if (!in_scene_p)
- glGetIntegerv (GL_VIEWPORT, ovp);
-
- glGetIntegerv (GL_BLEND_DST, &oblend);
- glGetFloatv (GL_CURRENT_COLOR, color);
-
- for (c = string; *c; c++)
- if (*c == '\n') lines++;
-
- texture_string_width (data, "m", &line_height);
- y -= line_height;
-
-
- glEnable (GL_TEXTURE_2D);
- glEnable (GL_BLEND);
- glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glPolygonMode (GL_FRONT, GL_FILL);
-
- glDisable (GL_TEXTURE_GEN_S);
- glDisable (GL_TEXTURE_GEN_T);
- glDisable (GL_LIGHTING);
- glDisable (GL_CULL_FACE);
- glDisable (GL_FOG);
-
- if (!in_scene_p)
- glDisable (GL_DEPTH_TEST);
-
- /* Each matrix mode has its own stack, so we need to push/pop
- them separately.
- */
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- {
-# ifdef DEBUG
- check_gl_error ("glPushMatrix");
-# endif
- if (!in_scene_p)
- glLoadIdentity();
-
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- {
-# ifdef DEBUG
- check_gl_error ("glPushMatrix");
-# endif
-
- if (!in_scene_p)
- {
- int rot = (int) current_device_rotation();
- while (rot <= -180) rot += 360;
- while (rot > 180) rot -= 360;
-
- glLoadIdentity();
- glViewport (0, 0, window_width, window_height);
- glOrtho (0, window_width, 0, window_height, -1, 1);
-
- if (rot > 135 || rot < -135) /* 180 */
- {
- glTranslatef (window_width, window_height, 0);
- glRotatef (180, 0, 0, 1);
- }
- else if (rot > 45) /* 90 */
- {
- glTranslatef (window_width, 0, 0);
- glRotatef (90, 0, 0, 1);
- }
- else if (rot < -45) /* 270 */
- {
- glTranslatef(0, window_height, 0);
- glRotatef (-90, 0, 0, 1);
- }
- }
-
-# ifdef DEBUG
- check_gl_error ("glOrtho");
-# endif
-
- /* Let's always dropshadow the FPS and Title text. */
- if (! in_scene_p)
- clear_background_p = True;
-
-
- /* draw the text */
-
- glTranslatef (x, y, 0);
-
- {
- const XPoint offsets[] = {{ -1, -1 },
- { -1, 1 },
- { 1, 1 },
- { 1, -1 },
- { 0, 0 }};
- int i;
-
- glColor3f (0, 0, 0);
- for (i = 0; i < countof(offsets); i++)
- {
- if (! clear_background_p)
- i = countof(offsets)-1;
- if (offsets[i].x == 0)
- glColor4fv (color);
-
- glPushMatrix();
- glTranslatef (offsets[i].x, offsets[i].y, 0);
- print_texture_string (data, string);
- glPopMatrix();
- }
- }
-
-# ifdef DEBUG
- check_gl_error ("print_texture_string");
-# endif
- }
- glPopMatrix();
- }
- glMatrixMode(GL_PROJECTION);
- glPopMatrix();
-
- if (tex_p) glEnable (GL_TEXTURE_2D); else glDisable (GL_TEXTURE_2D);
- if (texs_p) glEnable (GL_TEXTURE_GEN_S);/*else glDisable(GL_TEXTURE_GEN_S);*/
- if (text_p) glEnable (GL_TEXTURE_GEN_T);/*else glDisable(GL_TEXTURE_GEN_T);*/
- if (blend_p) glEnable (GL_BLEND); else glDisable (GL_BLEND);
- if (light_p) glEnable (GL_LIGHTING); /*else glDisable (GL_LIGHTING);*/
- if (depth_p) glEnable (GL_DEPTH_TEST); else glDisable (GL_DEPTH_TEST);
- if (cull_p) glEnable (GL_CULL_FACE); /*else glDisable (GL_CULL_FACE);*/
- if (fog_p) glEnable (GL_FOG); /*else glDisable (GL_FOG);*/
-
- if (!in_scene_p)
- glViewport (ovp[0], ovp[1], ovp[2], ovp[3]);
-
- glBlendFunc (GL_SRC_ALPHA, oblend);
-
-# ifndef HAVE_JWZGLES
- glPolygonMode (GL_FRONT, opoly[0]);
-# endif
-
- glMatrixMode(GL_MODELVIEW);
-}
projects / xscreensaver / blobdiff