static void
_rut_button_allocate_cb (RutObject *graphable,
void *user_data)
{
RutButton *button = graphable;
float text_min_width, text_natural_width;
float text_min_height, text_natural_height;
int text_width, text_height;
int text_x, text_y;
rut_sizable_get_preferred_width (button->text,
-1,
&text_min_width,
&text_natural_width);
rut_sizable_get_preferred_height (button->text,
-1,
&text_min_height,
&text_natural_height);
if (button->width > (BUTTON_HPAD + text_natural_width))
text_width = text_natural_width;
else
text_width = MAX (0, button->width - BUTTON_HPAD);
if (button->height > (BUTTON_VPAD + text_natural_height))
text_height = text_natural_height;
else
text_height = MAX (0, button->height - BUTTON_VPAD);
rut_sizable_set_size (button->text, text_width, text_height);
rut_transform_init_identity (button->text_transform);
text_x = (button->width / 2) - (text_width / 2.0);
text_y = (button->height / 2) - (text_height / 2.0);
rut_transform_translate (button->text_transform, text_x, text_y, 0);
}
void
update_control_point_positions(rig_selection_tool_t *tool,
rut_object_t *paint_camera) /* 2d ui camera */
{
rut_object_t *camera = tool->camera_component;
c_llist_t *l;
for (l = tool->selected_entities; l; l = l->next) {
entity_state_t *entity_state = l->data;
c_matrix_t transform;
const c_matrix_t *projection;
float screen_space[4], x, y;
const float *viewport;
c_llist_t *l2;
get_modelview_matrix(tool->camera, entity_state->entity, &transform);
projection = rut_camera_get_projection(camera);
viewport = rut_camera_get_viewport(camera);
for (l2 = entity_state->control_points; l2; l2 = l2->next) {
control_point_t *point = l2->data;
point->position[0] = point->x;
point->position[1] = point->y;
point->position[2] = point->z;
c_matrix_transform_points(&transform,
3, /* num components for input */
sizeof(float) * 3, /* input stride */
point->position,
sizeof(float) * 3, /* output stride */
point->position,
1 /* n_points */);
/* update the input region, need project the transformed point and
* do
* the viewport transform */
screen_space[0] = point->position[0];
screen_space[1] = point->position[1];
screen_space[2] = point->position[2];
c_matrix_project_points(projection,
3, /* num components for input */
sizeof(float) * 3, /* input stride */
screen_space,
sizeof(float) * 4, /* output stride */
screen_space,
1 /* n_points */);
/* perspective divide */
screen_space[0] /= screen_space[3];
screen_space[1] /= screen_space[3];
/* apply viewport transform */
x = VIEWPORT_TRANSFORM_X(screen_space[0], viewport[0], viewport[2]);
y = VIEWPORT_TRANSFORM_Y(screen_space[1], viewport[1], viewport[3]);
point->screen_pos[0] = x;
point->screen_pos[1] = y;
map_window_coords_to_overlay_coord(
paint_camera, tool->tool_overlay, &x, &y);
rut_transform_init_identity(point->transform);
rut_transform_translate(point->transform, x, y, 0);
rut_input_region_set_circle(point->input_region, x, y, 10);
}
}
}
static void
allocate_cb (RutObject *graphable,
void *user_data)
{
RutBin *bin = RUT_BIN (graphable);
if (bin->child)
{
float child_width, child_height;
float child_x = bin->left_padding;
float child_y = bin->top_padding;
float available_width =
bin->width - bin->left_padding - bin->right_padding;
float available_height =
bin->height - bin->top_padding - bin->bottom_padding;
rut_sizable_get_preferred_width (bin->child,
-1, /* for_height */
NULL, /* min_width_p */
&child_width);
if (child_width > available_width)
child_width = available_width;
switch (bin->x_position)
{
case RUT_BIN_POSITION_BEGIN:
break;
case RUT_BIN_POSITION_CENTER:
if (child_width < available_width)
child_x = nearbyintf (bin->width / 2.0f - child_width / 2.0f);
break;
case RUT_BIN_POSITION_END:
if (child_width < available_width)
child_x = bin->width - bin->right_padding - child_width;
break;
case RUT_BIN_POSITION_EXPAND:
child_width = available_width;
break;
}
rut_sizable_get_preferred_height (bin->child,
child_width, /* for_width */
NULL, /* min_height_p */
&child_height);
if (child_height > available_height)
child_height = available_height;
switch (bin->y_position)
{
case RUT_BIN_POSITION_BEGIN:
break;
case RUT_BIN_POSITION_CENTER:
if (child_height < available_height)
child_y = nearbyintf (bin->height / 2.0f - child_height / 2.0f);
break;
case RUT_BIN_POSITION_END:
if (child_height < available_height)
child_y = bin->height - bin->bottom_padding - child_height;
break;
case RUT_BIN_POSITION_EXPAND:
child_height = available_height;
break;
}
rut_transform_init_identity (bin->child_transform);
rut_transform_translate (bin->child_transform, child_x, child_y, 0.0f);
rut_sizable_set_size (bin->child, child_width, child_height);
}
}