static void
resizor_draw(struct resizor *resizor)
{
cairo_surface_t *surface;
cairo_t *cr;
struct rectangle allocation;
window_draw(resizor->window);
window_get_child_allocation(resizor->window, &allocation);
surface = window_get_surface(resizor->window);
cr = cairo_create(surface);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_rectangle(cr,
allocation.x,
allocation.y,
allocation.width,
allocation.height);
cairo_set_source_rgba(cr, 0, 0, 0, 0.8);
cairo_fill(cr);
cairo_destroy(cr);
cairo_surface_destroy(surface);
window_flush(resizor->window);
if (fabs(resizor->height.previous - resizor->height.target) > 0.1) {
wl_display_frame_callback(display_get_display(resizor->display),
frame_callback, resizor);
}
}
static void
allocate_buffer(struct gears *gears)
{
EGLImageKHR image;
struct rectangle allocation;
window_draw(gears->window);
gears->surface[gears->current] = window_get_surface(gears->window);
#ifdef HAVE_CAIRO_EGL
image = display_get_image_for_drm_surface(gears->display,
gears->surface[gears->current]);
#else /* XXX: hack to make Wayland compile, even if this example doesn't run */
die("gears cannot allocate buffer: it was compiled without cairo-gl\n");
return;
#endif
if (!eglMakeCurrent(gears->display, NULL, NULL, gears->context))
die("faile to make context current\n");
glBindRenderbuffer(GL_RENDERBUFFER_EXT,
gears->color_rbo[gears->current]);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, image);
glBindRenderbuffer(GL_RENDERBUFFER_EXT, gears->depth_rbo);
window_get_child_allocation(gears->window, &allocation);
glRenderbufferStorage(GL_RENDERBUFFER_EXT,
GL_DEPTH_COMPONENT,
allocation.width + 20 + 32,
allocation.height + 60 + 32);
}
static void
draw_gears(struct gears *gears)
{
GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
struct rectangle window_allocation;
struct rectangle allocation;
window_draw(gears->window);
window_get_child_allocation(gears->window, &allocation);
window_get_allocation(gears->window, &window_allocation);
display_acquire_window_surface(gears->d,
gears->window,
gears->context);
glViewport(allocation.x,
window_allocation.height - allocation.height - allocation.x,
allocation.width, allocation.height);
glScissor(allocation.x,
window_allocation.height - allocation.height - allocation.y,
allocation.width, allocation.height);
glEnable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(0.0, 0.0, -50);
glRotatef(view_rotx, 1.0, 0.0, 0.0);
glRotatef(view_roty, 0.0, 1.0, 0.0);
glRotatef(view_rotz, 0.0, 0.0, 1.0);
glPushMatrix();
glTranslatef(-3.0, -2.0, 0.0);
glRotatef(gears->angle, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[0]);
glPopMatrix();
glPushMatrix();
glTranslatef(3.1, -2.0, 0.0);
glRotatef(-2.0 * gears->angle - 9.0, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[1]);
glPopMatrix();
glPushMatrix();
glTranslatef(-3.1, 4.2, 0.0);
glRotatef(-2.0 * gears->angle - 25.0, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[2]);
glPopMatrix();
glPopMatrix();
glFlush();
display_release(gears->d);
window_flush(gears->window);
}
static void
image_draw(struct image *image)
{
struct rectangle allocation;
GdkPixbuf *pb;
cairo_t *cr;
cairo_surface_t *surface;
window_draw(image->window);
window_get_child_allocation(image->window, &allocation);
pb = gdk_pixbuf_new_from_file_at_size(image->filename,
allocation.width,
allocation.height,
NULL);
if (pb == NULL)
return;
surface = window_get_surface(image->window);
cr = cairo_create(surface);
window_get_child_allocation(image->window, &allocation);
cairo_rectangle(cr, allocation.x, allocation.y,
allocation.width, allocation.height);
cairo_clip(cr);
cairo_push_group(cr);
cairo_translate(cr, allocation.x, allocation.y);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba(cr, 0, 0, 0, 1);
cairo_paint(cr);
set_source_pixbuf(cr, pb,
0, 0,
allocation.width, allocation.height);
cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
cairo_paint(cr);
g_object_unref(pb);
cairo_pop_group_to_source(cr);
cairo_paint(cr);
cairo_destroy(cr);
window_flush(image->window);
cairo_surface_destroy(surface);
}
static void
draw_gears(struct gears *gears)
{
GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
struct rectangle allocation;
if (gears->surface[gears->current] == NULL)
allocate_buffer(gears);
glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT,
gears->color_rbo[gears->current]);
window_get_child_allocation(gears->window, &allocation);
glViewport(allocation.x, allocation.y,
allocation.width, allocation.height);
glScissor(allocation.x, allocation.y,
allocation.width, allocation.height);
glEnable(GL_SCISSOR_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(0.0, 0.0, -50);
glRotatef(view_rotx, 1.0, 0.0, 0.0);
glRotatef(view_roty, 0.0, 1.0, 0.0);
glRotatef(view_rotz, 0.0, 0.0, 1.0);
glPushMatrix();
glTranslatef(-3.0, -2.0, 0.0);
glRotatef(gears->angle, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[0]);
glPopMatrix();
glPushMatrix();
glTranslatef(3.1, -2.0, 0.0);
glRotatef(-2.0 * gears->angle - 9.0, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[1]);
glPopMatrix();
glPushMatrix();
glTranslatef(-3.1, 4.2, 0.0);
glRotatef(-2.0 * gears->angle - 25.0, 0.0, 0.0, 1.0);
glCallList(gears->gear_list[2]);
glPopMatrix();
glPopMatrix();
glFlush();
window_set_surface(gears->window, gears->surface[gears->current]);
window_flush(gears->window);
}
static void
keyboard_focus_handler(struct window *window,
struct input *device, void *data)
{
struct gears *gears = data;
struct rectangle allocation;
window_get_child_allocation(gears->window, &allocation);
resize_handler(window, allocation.width, allocation.height, gears);
}
