static void
cursor_set (xcb_connection_t *c,
xcb_screen_t *screen,
xcb_window_t window,
int cursor_id)
{
uint32_t values_list[3];
xcb_void_cookie_t cookie_font;
xcb_void_cookie_t cookie_gc;
xcb_generic_error_t *error;
xcb_font_t font;
xcb_cursor_t cursor;
xcb_gcontext_t gc;
uint32_t mask;
uint32_t value_list;
font = xcb_generate_id (c);
cookie_font = xcb_open_font_checked (c, font,
strlen ("cursor"),
"cursor");
error = xcb_request_check (c, cookie_font);
if (error) {
fprintf (stderr, "ERROR: can't open font : %d\n", error->error_code);
xcb_disconnect (c);
exit (-1);
}
cursor = xcb_generate_id (c);
xcb_create_glyph_cursor (c, cursor, font, font,
cursor_id, cursor_id + 1,
0, 0, 0,
0, 0, 0);
gc = xcb_generate_id (c);
mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
values_list[0] = screen->black_pixel;
values_list[1] = screen->white_pixel;
values_list[2] = font;
cookie_gc = xcb_create_gc_checked (c, gc, window, mask, values_list);
error = xcb_request_check (c, cookie_gc);
if (error) {
fprintf (stderr, "ERROR: can't create gc : %d\n", error->error_code);
xcb_disconnect (c);
exit (-1);
}
mask = XCB_CW_CURSOR;
value_list = cursor;
xcb_change_window_attributes (c, window, mask, &value_list);
xcb_free_cursor (c, cursor);
cookie_font = xcb_close_font_checked (c, font);
error = xcb_request_check (c, cookie_font);
if (error) {
fprintf (stderr, "ERROR: can't close font : %d\n", error->error_code);
xcb_disconnect (c);
exit (-1);
}
}
static xcb_gc_t getFontGC(xcb_connection_t *connection,
xcb_screen_t *screen,
xcb_window_t window,
const char *fontName) {
xcb_font_t font = xcb_generate_id(connection);
xcb_void_cookie_t fontCookie = xcb_open_font_checked(connection,
font,
strlen(fontName),
fontName);
testCookie(fontCookie, connection, "can't open font");
xcb_gcontext_t gc = xcb_generate_id(connection);
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
uint32_t value_list[3];
value_list[0] = screen->black_pixel;
value_list[1] = screen->white_pixel;
value_list[2] = font;
xcb_void_cookie_t gcCookie = xcb_create_gc_checked(connection,
gc,
window,
mask,
value_list);
testCookie(gcCookie, connection, "can't create gc");
fontCookie = xcb_close_font_checked(connection, font);
testCookie(fontCookie, connection, "can't close font");
return gc;
}
int main(int argc, char **argv) {
uint32_t width = test_width - 2 * INSET_X;
uint32_t height = test_height - 2 * INSET_Y;
int snum;
xcb_void_cookie_t check_cookie;
xcb_window_t w;
xcb_gcontext_t gc;
xcb_pixmap_t pix;
xcb_connection_t *c = xcb_connect(0, &snum);
xcb_screen_t *s = xcb_aux_get_screen(c, snum);
xcb_alloc_named_color_cookie_t bg_cookie =
xcb_alloc_named_color(c, s->default_colormap,
strlen("white"), "white");
xcb_alloc_named_color_cookie_t fg_cookie =
xcb_alloc_named_color(c, s->default_colormap,
strlen("black"), "black");
xcb_alloc_named_color_reply_t *bg_reply =
xcb_alloc_named_color_reply(c, bg_cookie, 0);
xcb_alloc_named_color_reply_t *fg_reply =
xcb_alloc_named_color_reply(c, fg_cookie, 0);
uint32_t fg, bg;
xcb_image_t *image, *native_image, *subimage;
uint32_t mask = 0;
xcb_params_gc_t gcv;
assert(bg_reply && fg_reply);
bg = bg_reply->pixel;
fg = fg_reply->pixel;
free(bg_reply);
free(fg_reply);
w = make_window(c, s, bg, fg, width, height);
gc = xcb_generate_id(c);
check_cookie = xcb_create_gc_checked(c, gc, w, 0, 0);
assert(!xcb_request_check(c, check_cookie));
image = xcb_image_create_from_bitmap_data((uint8_t *)test_bits,
test_width, test_height);
native_image = xcb_image_native(c, image, 1);
assert(native_image);
if (native_image != image)
xcb_image_destroy(image);
subimage = xcb_image_subimage(native_image, INSET_X, INSET_Y,
width, height,
0, 0, 0);
assert(subimage);
xcb_image_destroy(native_image);
subimage->format = XCB_IMAGE_FORMAT_XY_BITMAP;
pix = xcb_generate_id(c);
xcb_create_pixmap(c, s->root_depth, pix, w,
subimage->width, subimage->height);
gc = xcb_generate_id(c);
XCB_AUX_ADD_PARAM(&mask, &gcv, foreground, fg);
XCB_AUX_ADD_PARAM(&mask, &gcv, background, bg);
xcb_aux_create_gc(c, gc, pix, mask, &gcv);
xcb_image_put(c, pix, gc, subimage, 0, 0, 0);
process_events(c, gc, w, pix, width, height);
xcb_disconnect(c);
return 1;
}
static xcb_gc_t
gc_font_get (xcb_connection_t *c,
xcb_screen_t *screen,
xcb_window_t window,
const char *font_name)
{
uint32_t value_list[3];
xcb_void_cookie_t cookie_font;
xcb_void_cookie_t cookie_gc;
xcb_generic_error_t *error;
xcb_font_t font;
xcb_gcontext_t gc;
uint32_t mask;
font = xcb_generate_id (c);
cookie_font = xcb_open_font_checked (c, font,
strlen (font_name),
font_name);
error = xcb_request_check (c, cookie_font);
if (error) {
fprintf (stderr, "ERROR: can't open font : %d\n", error->error_code);
xcb_disconnect (c);
return -1;
}
gc = xcb_generate_id (c);
mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
value_list[0] = screen->black_pixel;
value_list[1] = screen->white_pixel;
value_list[2] = font;
cookie_gc = xcb_create_gc_checked (c, gc, window, mask, value_list);
error = xcb_request_check (c, cookie_gc);
if (error) {
fprintf (stderr, "ERROR: can't create gc : %d\n", error->error_code);
xcb_disconnect (c);
exit (-1);
}
cookie_font = xcb_close_font_checked (c, font);
error = xcb_request_check (c, cookie_font);
if (error) {
fprintf (stderr, "ERROR: can't close font : %d\n", error->error_code);
xcb_disconnect (c);
exit (-1);
}
return gc;
}
static
int init_bar() {
uint32_t vals[4];
xcb_void_cookie_t cookie;
xcb_generic_error_t *err;
/* create status bar window at the bottom */
bar_.w = nil_.scr->width_in_pixels;
bar_.h = nil_.font.ascent + nil_.font.descent + 2;
bar_.x = 0;
bar_.y = nil_.scr->height_in_pixels - bar_.h;
bar_.win = xcb_generate_id(nil_.con);
vals[0] = XCB_BACK_PIXMAP_PARENT_RELATIVE;
vals[1] = 1; /* override_redirect */
vals[2] = XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_EXPOSURE;
vals[3] = nil_.cursor[CURSOR_NORMAL];
cookie = xcb_create_window_checked(nil_.con, nil_.scr->root_depth, bar_.win,
nil_.scr->root, bar_.x, bar_.y, bar_.w, bar_.h, 0, XCB_COPY_FROM_PARENT,
nil_.scr->root_visual, XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT
| XCB_CW_EVENT_MASK | XCB_CW_CURSOR, vals);
err = xcb_request_check(nil_.con, cookie);
if (err) {
NIL_ERR("create window %d", err->error_code);
return -1;
}
vals[0] = XCB_STACK_MODE_ABOVE;
xcb_configure_window(nil_.con, bar_.win, XCB_CONFIG_WINDOW_STACK_MODE, &vals[0]);
cookie = xcb_map_window_checked(nil_.con, bar_.win);
err = xcb_request_check(nil_.con, cookie);
if (err) {
NIL_ERR("map window %d", err->error_code);
return -1;
}
/* graphic context */
bar_.gc = xcb_generate_id(nil_.con);
vals[0] = nil_.color.bar_fg;
vals[1] = nil_.color.bar_bg;
vals[2] = nil_.font.id;
cookie = xcb_create_gc_checked(nil_.con, bar_.gc, bar_.win, XCB_GC_FOREGROUND
| XCB_GC_BACKGROUND | XCB_GC_FONT, vals);
err = xcb_request_check(nil_.con, cookie);
if (err) {
NIL_ERR("map window %d", err->error_code);
return -1;
}
return 0;
}
/*
* Initialize the surface to represent the given drawable.
*
*/
void draw_util_surface_init(xcb_connection_t *conn, surface_t *surface, xcb_drawable_t drawable,
xcb_visualtype_t *visual, int width, int height) {
surface->id = drawable;
surface->visual_type = ((visual == NULL) ? visual_type : visual);
surface->width = width;
surface->height = height;
surface->gc = xcb_generate_id(conn);
xcb_void_cookie_t gc_cookie = xcb_create_gc_checked(conn, surface->gc, surface->id, 0, NULL);
xcb_generic_error_t *error = xcb_request_check(conn, gc_cookie);
if (error != NULL) {
ELOG("Could not create graphical context. Error code: %d. Please report this bug.\n", error->error_code);
}
surface->surface = cairo_xcb_surface_create(conn, surface->id, surface->visual_type, width, height);
surface->cr = cairo_create(surface->surface);
}
X11BufferSurface::X11BufferSurface(X11WindowContext& wc) : windowContext_(&wc)
{
gc_ = xcb_generate_id(&xConnection());
std::uint32_t value[] = {0, 0};
auto c = xcb_create_gc_checked(&xConnection(), gc_, wc.xWindow(), XCB_GC_FOREGROUND, value);
windowContext().errorCategory().checkThrow(c, "ny::X11BufferSurface: create_gc");
//query the format
//this is needed because the xserver may need a different bpp for an image
//with the depth of the window.
//For 24-bit depth images the xserver often required 32 bpp.
auto setup = xcb_get_setup(&xConnection());
auto fmtit = xcb_setup_pixmap_formats(setup);
auto fmtend = fmtit + xcb_setup_pixmap_formats_length(setup);
xcb_format_t* fmt {};
while(fmtit != fmtend)
{
if(fmtit->depth == windowContext().visualDepth())
{
fmt = fmtit;
break;
}
++fmtit;
}
if(!fmt)
throw std::runtime_error("ny::X11BufferSurface: couldn't query depth format bpp");
format_ = visualToFormat(*windowContext().xVisualType(), fmt->bits_per_pixel);
if(format_ == ImageDataFormat::none)
throw std::runtime_error("ny::X11BufferSurface: couldn't parse visual format");
//check if the server has shm suport
//it is also implemented without shm but the performance might be worse
auto cookie = xcb_shm_query_version(&xConnection());
auto reply = xcb_shm_query_version_reply(&xConnection(), cookie, nullptr);
shm_ = reply;
if(reply) free(reply);
if(!shm_) warning("ny::X11BufferSurface: shm server does not support shm extension");
}
static void setCursor(xcb_connection_t *connection,
xcb_screen_t *screen,
xcb_window_t window,
int cursorId) {
xcb_font_t font = xcb_generate_id(connection);
xcb_void_cookie_t fontCookie = xcb_open_font_checked(connection,
font,
strlen("cursor"),
"cursor");
testCookie(fontCookie, connection, "can't open font");
xcb_cursor_t cursor = xcb_generate_id(connection);
xcb_create_glyph_cursor(connection,
cursor,
font,
font,
cursorId,
cursorId + 1,
0,0,0,0,0,0);
xcb_gcontext_t gc = xcb_generate_id(connection);
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
uint32_t values_list[3];
values_list[0] = screen->black_pixel;
values_list[1] = screen->white_pixel;
values_list[2] = font;
xcb_void_cookie_t gcCookie = xcb_create_gc_checked(connection, gc, window, mask, values_list);
testCookie(gcCookie, connection, "can't create gc");
mask = XCB_CW_CURSOR;
uint32_t value_list = cursor;
xcb_change_window_attributes(connection, window, mask, &value_list);
xcb_free_cursor(connection, cursor);
fontCookie = xcb_close_font_checked(connection, font);
testCookie(fontCookie, connection, "can't close font");
}
/** \param connection connection to a X sever
\param screen screen, where the window will be created
\param parent parent window (0 for screen->root)
\param windowed means no fullscreen
*/
scr_window(xcb_connection_t *connection, xcb_screen_t *screen,
xcb_window_t parent, bool windowed)
: con(connection), scr(screen), client_win(0)
{
uint32_t mask;
uint32_t values[3];
xcb_void_cookie_t cookie;
xcb_generic_error_t *error = NULL;
if(!parent) parent = scr->root;
// use parent window size when not in windowed mode
if(!windowed) {
xcb_get_geometry_cookie_t geo_cookie = xcb_get_geometry(con, parent);
xcb_get_geometry_reply_t *reply =
xcb_get_geometry_reply(con, geo_cookie, &error);
if(error) {
std::cerr << "Could not get parent window geometry." << std::endl;
exit(1);
}
width = reply->width;
height = reply->height;
free(reply);
} else {
// use some defaults in windowed mode
width = 640;
height = 480;
}
if(windowed) {
// create a black maybe override-redirected window
// and register for expose and resize events.
mask = XCB_CW_BACK_PIXEL | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK;
values[0] = scr->black_pixel;
values[1] = !windowed; // only if in fullscreen mode, otherwise normal window
values[2] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_STRUCTURE_NOTIFY;
win = xcb_generate_id(con);
cookie = xcb_create_window_checked(
con, XCB_COPY_FROM_PARENT, win,
parent, 0, 0, width, height, 0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
scr->root_visual, mask, values
);
error = xcb_request_check(con, cookie);
if(error) {
std::cerr << "Could not create window." << std::endl;
exit(1);
}
// map the window on the screen
xcb_map_window(con, win);
xcb_flush(con);
} else {
// directly use the parent window
win = parent;
// cahnge window attributes like above
mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK;
values[0] = scr->black_pixel;
values[1] = XCB_EVENT_MASK_EXPOSURE;
xcb_void_cookie_t cookie =
xcb_change_window_attributes(con, win, mask, values);
xcb_generic_error_t *error = xcb_request_check(con, cookie);
if(error) {
std::cerr << "Could not configure window." << std::endl;
exit(1);
}
}
// open a font. "fixed" should hopefully be available everywhere
font = xcb_generate_id(con);
std::string font_name = "fixed";
cookie = xcb_open_font_checked(con, font, font_name.size(),
font_name.c_str());
error = xcb_request_check(con, cookie);
if(error) {
std::cerr << "Could not open font " << font_name << "." << std::endl;
exit(1);
}
// allocate white text graphics context with above font
txt_gc = xcb_generate_id(con);
mask = XCB_GC_FOREGROUND | XCB_GC_FONT;
values[0] = scr->white_pixel;
values[1] = font;
cookie = xcb_create_gc_checked(con, txt_gc, win, mask, values);
error = xcb_request_check(con, cookie);
if(error) {
std::cerr << "Could not create graphics context." << std::endl;
exit(1);
}
}
void draw(xcb_connection_t *connection, xcb_screen_t *screen, xcb_window_t window) {
if (NULL != testcase) {
DRAW_FUNC pf = (DRAW_FUNC)dlsym(0, testcase);
if (NULL != pf) {
fprintf(stderr, "call %s \n", testcase);
pf();
return;
}
}
//get_version();
xcb_font_t font = xcb_generate_id(connection);
xcb_void_cookie_t cookie_font = xcb_open_font_checked(connection, font, strlen(font_name_pattern), font_name_pattern);
xcb_generic_error_t *error = xcb_request_check(connection, cookie_font);
if (error) {
fprintf(stderr, "ERROR: can't open font :%d\n", error->error_code);
xcb_disconnect(connection);
exit(0);
}
xcb_gcontext_t gc = xcb_generate_id(connection);
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
uint32_t value_list[3];
value_list[0] = screen->black_pixel;
value_list[1] = screen->white_pixel;
value_list[2] = font;
xcb_void_cookie_t cookie_gc = xcb_create_gc_checked(connection, gc, window, mask, value_list);
error = xcb_request_check(connection, cookie_gc);
if (error) {
fprintf(stderr, "ERROR: can't create gc: %d\n", error->error_code);
xcb_disconnect(connection);
exit(0);
}
cookie_font = xcb_close_font_checked(connection, font);
error = xcb_request_check(connection, cookie_font);
if (error) {
fprintf(stderr, "ERROR: can't close font: %d\n", error->error_code);
xcb_disconnect(connection);
exit(0);
}
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
glFlush();
glColor3f(1.0f, 0.0f, 0.0f);
glRasterPos2f(0.0f, 0.0f);
glPushAttrib(GL_LIST_BIT);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
static int isFirstCall = 1;
static GLuint lists;
if (isFirstCall) {
lists = glGenLists(128);
}
#if 1
//for (i = 0; i < sizeof(letters)
glNewList(lists + 'A', GL_COMPILE);
glBitmap(8, 13, 0.0, 2.0, 10.0, 0.0, letters[0]);
glEndList();
GLubyte *str = (GLubyte*)"A";
#else
glXUseXFont(font, 0, 128, lists);
GLubyte *str = (GLubyte*)"Hello, world.";
#endif
glListBase(lists);
glCallLists(strlen(str), GL_UNSIGNED_BYTE, str);
glPopAttrib();
glFlush();
/* static int isFirstCall = 1;
static GLuint lists;
//load font
//gen list
if (isFirstCall) {
lists = glGenLists(128);
}
glXUseXFont(font, 0, 128, lists);
glListBase(lists);
char *str = "Hello, world";
for (; *str!='\0';++str) {
glCallList(lists + *str);
}
glFlush();
//glDeleteLists(lists, 256);
//use font
//draw text
//unuse font?
//delete list
//unload font*/
cookie_gc = xcb_free_gc(connection, gc);
error = xcb_request_check(connection, cookie_gc);
if (error) {
fprintf(stderr, "ERROR: can't free gc: %d\n", error->error_code);
xcb_disconnect(connection);
exit(0);
}
}
