diff options
Diffstat (limited to 'FL')
| -rw-r--r-- | FL/glut.H | 225 |
1 files changed, 150 insertions, 75 deletions
@@ -26,6 +26,17 @@ // Commented out lines indicate parts of GLUT that are not emulated. +// Notes: as pointed out in STR #3458 the current GLUT window, +// i.e. the global static variable 'glut_window' can be NULL ... +// (a) if not (yet) initialized +// (b) if the current GLUT window is deleted at any time. +// The FLTK implementation silently ignores function calls if the current +// window is NULL to avoid dereferencing a NULL pointer. This is obviously +// compatible with GLUT version 3.7 according to comment #5 on STR #3458. +// According to the same comment FreeGLUT 3.0 would issue an error message +// and quit. +// Albrecht-S, Oct 2023 + #ifndef _FL_glut_H_ # define _FL_glut_H_ @@ -81,18 +92,18 @@ FL_EXPORT void glutInit(int *argcp, char **argv); // creates first window FL_EXPORT void glutInitDisplayMode(unsigned int mode); // the FL_ symbols have the same value as the GLUT ones: -# define GLUT_RGB FL_RGB -# define GLUT_RGBA FL_RGB -# define GLUT_INDEX FL_INDEX -# define GLUT_SINGLE FL_SINGLE -# define GLUT_DOUBLE FL_DOUBLE -# define GLUT_ACCUM FL_ACCUM -# define GLUT_ALPHA FL_ALPHA -# define GLUT_DEPTH FL_DEPTH -# define GLUT_STENCIL FL_STENCIL -# define GLUT_MULTISAMPLE FL_MULTISAMPLE -# define GLUT_STEREO FL_STEREO -// # define GLUT_LUMINANCE 512 +# define GLUT_RGB FL_RGB +# define GLUT_RGBA FL_RGB +# define GLUT_INDEX FL_INDEX +# define GLUT_SINGLE FL_SINGLE +# define GLUT_DOUBLE FL_DOUBLE +# define GLUT_ACCUM FL_ACCUM +# define GLUT_ALPHA FL_ALPHA +# define GLUT_DEPTH FL_DEPTH +# define GLUT_STENCIL FL_STENCIL +# define GLUT_MULTISAMPLE FL_MULTISAMPLE +# define GLUT_STEREO FL_STEREO +// # define GLUT_LUMINANCE 512 FL_EXPORT void glutInitWindowPosition(int x, int y); @@ -107,37 +118,62 @@ FL_EXPORT int glutCreateSubWindow(int win, int x, int y, int width, int height); FL_EXPORT void glutDestroyWindow(int win); -inline void glutPostRedisplay() {glut_window->redraw();} +inline void glutPostRedisplay() { + if (glut_window) glut_window->redraw(); +} FL_EXPORT void glutPostWindowRedisplay(int win); FL_EXPORT void glutSwapBuffers(); -inline int glutGetWindow() {return glut_window->number;} +inline int glutGetWindow() { + return glut_window ? glut_window->number : 0; +} FL_EXPORT void glutSetWindow(int win); -inline void glutSetWindowTitle(char *t) {glut_window->label(t);} +inline void glutSetWindowTitle(char *t) { + if (glut_window) glut_window->label(t); +} -inline void glutSetIconTitle(char *t) {glut_window->iconlabel(t);} +inline void glutSetIconTitle(char *t) { + if (glut_window) glut_window->iconlabel(t); +} -inline void glutPositionWindow(int x, int y) {glut_window->position(x,y);} +inline void glutPositionWindow(int x, int y) { + if (glut_window) glut_window->position(x,y); +} -inline void glutReshapeWindow(int w, int h) {glut_window->size(w,h);} +inline void glutReshapeWindow(int w, int h) { + if (glut_window) glut_window->size(w,h); +} -inline void glutPopWindow() {glut_window->show();} +inline void glutPopWindow() { + if (glut_window) glut_window->show(); +} inline void glutPushWindow() { /* do nothing */ } -inline void glutIconifyWindow() {glut_window->iconize();} +inline void glutIconifyWindow() { + if (glut_window) glut_window->iconize(); +} -inline void glutShowWindow() {glut_window->show();} +inline void glutShowWindow() { + if (glut_window) glut_window->show(); +} -inline void glutHideWindow() {glut_window->hide();} +inline void glutHideWindow() { + if (glut_window) glut_window->hide(); +} -inline void glutFullScreen() {glut_window->fullscreen();} +inline void glutFullScreen() { + if (glut_window) glut_window->fullscreen(); +} + +inline void glutSetCursor(Fl_Cursor cursor) { + if (glut_window) glut_window->cursor(cursor); +} -inline void glutSetCursor(Fl_Cursor cursor) {glut_window->cursor(cursor);} // notice that the numeric values are different than glut: # define GLUT_CURSOR_RIGHT_ARROW ((Fl_Cursor)2) # define GLUT_CURSOR_LEFT_ARROW ((Fl_Cursor)67) @@ -165,19 +201,33 @@ inline void glutSetCursor(Fl_Cursor cursor) {glut_window->cursor(cursor);} inline void glutWarpPointer(int, int) { /* do nothing */ } -inline void glutEstablishOverlay() {glut_window->make_overlay_current();} +inline void glutEstablishOverlay() { + if (glut_window) glut_window->make_overlay_current(); +} -inline void glutRemoveOverlay() {glut_window->hide_overlay();} +inline void glutRemoveOverlay() { + if (glut_window) glut_window->hide_overlay(); +} inline void glutUseLayer(GLenum layer) { - layer ? glut_window->make_overlay_current() : glut_window->make_current();} + if (!glut_window) + return; + layer ? glut_window->make_overlay_current() : glut_window->make_current(); +} + enum {GLUT_NORMAL, GLUT_OVERLAY}; -inline void glutPostOverlayRedisplay() {glut_window->redraw_overlay();} +inline void glutPostOverlayRedisplay() { + if (glut_window) glut_window->redraw_overlay(); +} -inline void glutShowOverlay() {glut_window->redraw_overlay();} +inline void glutShowOverlay() { + if (glut_window) glut_window->redraw_overlay(); +} -inline void glutHideOverlay() {glut_window->hide_overlay();} +inline void glutHideOverlay() { + if (glut_window) glut_window->hide_overlay(); +} FL_EXPORT int glutCreateMenu(void (*)(int)); @@ -197,34 +247,53 @@ FL_EXPORT void glutChangeToSubMenu(int item, char *label, int submenu); FL_EXPORT void glutRemoveMenuItem(int item); -inline void glutAttachMenu(int b) {glut_window->menu[b] = glut_menu;} +inline void glutAttachMenu(int b) { + if (glut_window) glut_window->menu[b] = glut_menu; +} -inline void glutDetachMenu(int b) {glut_window->menu[b] = 0;} +inline void glutDetachMenu(int b) { + if (glut_window) glut_window->menu[b] = 0; +} -inline void glutDisplayFunc(void (*f)()) {glut_window->display = f;} +inline void glutDisplayFunc(void (*f)()) { + if (glut_window) glut_window->display = f; +} -inline void glutReshapeFunc(void (*f)(int w, int h)) {glut_window->reshape=f;} +inline void glutReshapeFunc(void (*f)(int w, int h)) { + if (glut_window) glut_window->reshape = f; +} inline void glutKeyboardFunc(void (*f)(uchar key, int x, int y)) { - glut_window->keyboard = f;} + if (glut_window) glut_window->keyboard = f; +} inline void glutMouseFunc(void (*f)(int b, int state, int x, int y)) { - glut_window->mouse = f;} + if (glut_window) glut_window->mouse = f; +} + # define GLUT_LEFT_BUTTON 0 # define GLUT_MIDDLE_BUTTON 1 # define GLUT_RIGHT_BUTTON 2 # define GLUT_DOWN 0 # define GLUT_UP 1 -inline void glutMotionFunc(void (*f)(int x, int y)) {glut_window->motion= f;} +inline void glutMotionFunc(void (*f)(int x, int y)) { + if (glut_window) glut_window->motion = f; +} inline void glutPassiveMotionFunc(void (*f)(int x, int y)) { - glut_window->passivemotion= f;} + if (glut_window) glut_window->passivemotion = f; +} + +inline void glutEntryFunc(void (*f)(int s)) { + if (glut_window) glut_window->entry = f; +} -inline void glutEntryFunc(void (*f)(int s)) {glut_window->entry = f;} enum {GLUT_LEFT, GLUT_ENTERED}; -inline void glutVisibilityFunc(void (*f)(int s)) {glut_window->visibility=f;} +inline void glutVisibilityFunc(void (*f)(int s)) { + if (glut_window) glut_window->visibility = f; +} enum {GLUT_NOT_VISIBLE, GLUT_VISIBLE}; FL_EXPORT void glutIdleFunc(void (*f)()); @@ -241,7 +310,9 @@ inline void glutMenuStatusFunc(void (*f)(int status, int x, int y)) { enum {GLUT_MENU_NOT_IN_USE, GLUT_MENU_IN_USE}; inline void glutSpecialFunc(void (*f)(int key, int x, int y)) { - glut_window->special = f;} + if (glut_window) glut_window->special = f; +} + # define GLUT_KEY_F1 1 # define GLUT_KEY_F2 2 # define GLUT_KEY_F3 3 @@ -265,35 +336,36 @@ inline void glutSpecialFunc(void (*f)(int key, int x, int y)) { # define GLUT_KEY_END FL_End # define GLUT_KEY_INSERT FL_Insert -//inline void glutSpaceballMotionFunc(void (*)(int x, int y, int z)); +// inline void glutSpaceballMotionFunc(void (*)(int x, int y, int z)); -//inline void glutSpaceballRotateFunc(void (*)(int x, int y, int z)); +// inline void glutSpaceballRotateFunc(void (*)(int x, int y, int z)); -//inline void glutSpaceballButtonFunc(void (*)(int button, int state)); +// inline void glutSpaceballButtonFunc(void (*)(int button, int state)); -//inline void glutButtonBoxFunc(void (*)(int button, int state)); +// inline void glutButtonBoxFunc(void (*)(int button, int state)); -//inline void glutDialsFunc(void (*)(int dial, int value)); +// inline void glutDialsFunc(void (*)(int dial, int value)); -//inline void glutTabletMotionFunc(void (*)(int x, int y)); +// inline void glutTabletMotionFunc(void (*)(int x, int y)); -//inline void glutTabletButtonFunc(void (*)(int button, int state, int x, int y)); +// inline void glutTabletButtonFunc(void (*)(int button, int state, int x, int y)); inline void glutOverlayDisplayFunc(void (*f)()) { - glut_window->overlaydisplay = f;} + if (glut_window) glut_window->overlaydisplay = f; +} -//inline void glutWindowStatusFunc(void (*)(int state)); -//enum {GLUT_HIDDEN, GLUT_FULLY_RETAINED, GLUT_PARTIALLY_RETAINED, -// GLUT_FULLY_COVERED}; +// inline void glutWindowStatusFunc(void (*)(int state)); +// enum {GLUT_HIDDEN, GLUT_FULLY_RETAINED, GLUT_PARTIALLY_RETAINED, +// GLUT_FULLY_COVERED}; -//inline void glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue); +// inline void glutSetColor(int, GLfloat red, GLfloat green, GLfloat blue); -//inline GLfloat glutGetColor(int ndx, int component); -//#define GLUT_RED 0 -//#define GLUT_GREEN 1 -//#define GLUT_BLUE 2 +// inline GLfloat glutGetColor(int ndx, int component); +// #define GLUT_RED 0 +// #define GLUT_GREEN 1 +// #define GLUT_BLUE 2 -//inline void glutCopyColormap(int win); +// inline void glutCopyColormap(int win); // Warning: values are changed from GLUT! // Also relies on the GL_ symbols having values greater than 100 @@ -359,13 +431,16 @@ FL_EXPORT int glutDeviceGet(GLenum type); # define GLUT_ACTIVE_SHIFT FL_SHIFT # define GLUT_ACTIVE_CTRL FL_CTRL # define GLUT_ACTIVE_ALT FL_ALT -inline int glutGetModifiers() {return Fl::event_state() & (GLUT_ACTIVE_SHIFT | GLUT_ACTIVE_CTRL | GLUT_ACTIVE_ALT);} + +inline int glutGetModifiers() { + return Fl::event_state() & (GLUT_ACTIVE_SHIFT | GLUT_ACTIVE_CTRL | GLUT_ACTIVE_ALT); +} FL_EXPORT int glutLayerGet(GLenum); # define GLUT_OVERLAY_POSSIBLE 800 //#define GLUT_LAYER_IN_USE 801 //#define GLUT_HAS_OVERLAY 802 -# define GLUT_TRANSPARENT_INDEX 803 +# define GLUT_TRANSPARENT_INDEX 803 # define GLUT_NORMAL_DAMAGED 804 # define GLUT_OVERLAY_DAMAGED 805 @@ -375,25 +450,25 @@ typedef void (*GLUTproc)(); FL_EXPORT GLUTproc glutGetProcAddress(const char *procName); -//inline int glutVideoResizeGet(GLenum param); -//#define GLUT_VIDEO_RESIZE_POSSIBLE 900 -//#define GLUT_VIDEO_RESIZE_IN_USE 901 -//#define GLUT_VIDEO_RESIZE_X_DELTA 902 -//#define GLUT_VIDEO_RESIZE_Y_DELTA 903 -//#define GLUT_VIDEO_RESIZE_WIDTH_DELTA 904 -//#define GLUT_VIDEO_RESIZE_HEIGHT_DELTA 905 -//#define GLUT_VIDEO_RESIZE_X 906 -//#define GLUT_VIDEO_RESIZE_Y 907 -//#define GLUT_VIDEO_RESIZE_WIDTH 908 -//#define GLUT_VIDEO_RESIZE_HEIGHT 909 +// inline int glutVideoResizeGet(GLenum param); +// #define GLUT_VIDEO_RESIZE_POSSIBLE 900 +// #define GLUT_VIDEO_RESIZE_IN_USE 901 +// #define GLUT_VIDEO_RESIZE_X_DELTA 902 +// #define GLUT_VIDEO_RESIZE_Y_DELTA 903 +// #define GLUT_VIDEO_RESIZE_WIDTH_DELTA 904 +// #define GLUT_VIDEO_RESIZE_HEIGHT_DELTA 905 +// #define GLUT_VIDEO_RESIZE_X 906 +// #define GLUT_VIDEO_RESIZE_Y 907 +// #define GLUT_VIDEO_RESIZE_WIDTH 908 +// #define GLUT_VIDEO_RESIZE_HEIGHT 909 -//inline void glutSetupVideoResizing(); +// inline void glutSetupVideoResizing(); -//inline void glutStopVideoResizing(); +// inline void glutStopVideoResizing(); -//inline void glutVideoResize(int x, int y, int width, int height); +// inline void glutVideoResize(int x, int y, int width, int height); -//inline void glutVideoPan(int x, int y, int width, int height); +// inline void glutVideoPan(int x, int y, int width, int height); // Font argument must be a void* for compatibility, so... /** fltk glut font/size attributes used in the glutXXX functions */ |