/**
* @brief Return the first visible node at a position
* @param[in] node Node where we must search
* @param[in] rx Relative x position to the parent of the node
* @param[in] ry Relative y position to the parent of the node
* @return The first visible node at position, else nullptr
*/
static uiNode_t *UI_GetNodeInTreeAtPosition (uiNode_t *node, int rx, int ry)
{
uiNode_t *find;
if (node->invis || UI_Node_IsVirtual(node) || !UI_CheckVisibility(node))
return nullptr;
/* relative to the node */
rx -= node->box.pos[0];
ry -= node->box.pos[1];
/* check bounding box */
if (rx < 0 || ry < 0 || rx >= node->box.size[0] || ry >= node->box.size[1])
return nullptr;
/** @todo we should improve the loop (last-to-first) */
find = nullptr;
if (node->firstChild) {
uiNode_t *child;
vec2_t clientPosition = {0, 0};
if (UI_Node_IsScrollableContainer(node))
UI_Node_GetClientPosition(node, clientPosition);
rx -= clientPosition[0];
ry -= clientPosition[1];
for (child = node->firstChild; child; child = child->next) {
uiNode_t *tmp;
tmp = UI_GetNodeInTreeAtPosition(child, rx, ry);
if (tmp)
find = tmp;
}
rx += clientPosition[0];
ry += clientPosition[1];
}
if (find)
return find;
/* disable ghost/excluderect in debug mode 2 */
if (UI_DebugMode() != 2) {
uiExcludeRect_t *excludeRect;
/* is the node tangible */
if (node->ghost)
return nullptr;
/* check excluded box */
for (excludeRect = node->firstExcludeRect; excludeRect != nullptr; excludeRect = excludeRect->next) {
if (rx >= excludeRect->pos[0]
&& rx < excludeRect->pos[0] + excludeRect->size[0]
&& ry >= excludeRect->pos[1]
&& ry < excludeRect->pos[1] + excludeRect->size[1])
return nullptr;
}
}
/* we are over the node */
return node;
}
/**
* @brief Update an absolute position to a relative one
* @param[in] node Context node
* @param[in,out] x an absolute x position
* @param[in,out] y an absolute y position
*/
void UI_NodeAbsoluteToRelativePos (const uiNode_t* node, int* x, int* y)
{
assert(node != nullptr);
/* if we request the position of an undrawable node, there is a problem */
assert(node->behaviour->isVirtual == false);
assert(x != nullptr);
assert(y != nullptr);
/* if we request the position of an undrawable node, there is a problem */
if (node->behaviour->isVirtual)
Com_Error(ERR_DROP, "UI_NodeAbsoluteToRelativePos: Node '%s' doesn't have a position", node->name);
while (node) {
*x -= node->box.pos[0];
*y -= node->box.pos[1];
if (UI_Node_IsScrollableContainer(node)) {
vec2_t clientPosition = {0, 0};
UI_Node_GetClientPosition(node, clientPosition);
*x -= clientPosition[0];
*y -= clientPosition[1];
}
node = node->parent;
}
}
/**
* @brief Returns the absolute position of a node in the screen.
* Screen position is not used for the node rendering cause we use OpenGL
* translations. But this function is need for some R_functions methodes.
* @param[in] node Context node
* @param[out] pos Absolute position into the screen
*/
void UI_GetNodeScreenPos (const uiNode_t* node, vec2_t pos)
{
assert(node);
assert(pos);
/* if we request the position of a non drawable node, there is a problem */
if (node->behaviour->isVirtual)
Com_Error(ERR_FATAL, "UI_GetNodeAbsPos: Node '%s' doesn't have a position", node->name);
Vector2Set(pos, 0, 0);
while (node) {
#ifdef DEBUG
if (node->box.pos[0] != (int)node->box.pos[0] || node->box.pos[1] != (int)node->box.pos[1])
Com_Error(ERR_FATAL, "UI_GetNodeAbsPos: Node '%s' position %f,%f is not integer", UI_GetPath(node), node->box.pos[0], node->box.pos[1]);
#endif
pos[0] += node->box.pos[0];
pos[1] += node->box.pos[1];
node = node->parent;
if (node && UI_Node_IsScrollableContainer(node)) {
vec2_t clientPosition = {0, 0};
UI_Node_GetClientPosition(node, clientPosition);
pos[0] += clientPosition[0];
pos[1] += clientPosition[1];
}
}
}
/**
* @brief return true if the node size change and update the cache
*/
bool uiAbstractScrollableNode::isSizeChange (uiNode_t *node)
{
assert(UI_Node_IsScrollableContainer(node));
if (!Vector2Equal(node->box.size, EXTRADATA(node).cacheSize)) {
Vector2Copy(node->box.size, EXTRADATA(node).cacheSize);
return true;
}
return false;
}
/**
* @brief Set the Y scroll to a position, and call event if need
* @param[in] node Context node
* @param[in] viewPos New position to set, else -1 if no change
* @param[in] viewSize New view size to set, else -1 if no change
* @param[in] fullSize New full size to set, else -1 if no change
* @return True, if something have change
*/
bool uiAbstractScrollableNode::setScrollY (uiNode_t *node, int viewPos, int viewSize, int fullSize)
{
bool updated;
assert(UI_Node_IsScrollableContainer(node));
updated = EXTRADATA(node).scrollY.set(viewPos, viewSize, fullSize);
if (updated && EXTRADATA(node).onViewChange)
UI_ExecuteEventActions(node, EXTRADATA(node).onViewChange);
return updated;
}
/**
* @brief Scroll the Y scroll with a relative position, and call event if need
* @return true, if something have change
*/
bool uiAbstractScrollableNode::scrollY (uiNode_t *node, int offset)
{
assert(UI_Node_IsScrollableContainer(node));
return setScrollY(node, EXTRADATA(node).scrollY.viewPos + offset, -1, -1);
}