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mvNodes.cpp
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752 lines (610 loc) · 21.9 KB
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#include "mvNodes.h"
#include <imnodes.h>
#include "mvContext.h"
#include "mvItemRegistry.h"
#include "mvPyUtils.h"
#include "mvItemHandlers.h"
#include "mvThemes.h"
#include "mvContainers.h"
#include "mvFontItems.h"
static std::string FindRenderedTextEnd(const char* text, const char* text_end = nullptr)
{
int size = 0;
const char* text_display_end = text;
if (!text_end)
text_end = (const char*)-1;
while (text_display_end < text_end && *text_display_end != '\0' && (text_display_end[0] != '#' || text_display_end[1] != '#'))
{
text_display_end++;
size++;
}
char* cvalue = new char[size + 1];
for (int i = 0; i < size; i++)
cvalue[i] = text[i];
cvalue[size] = '\0';
auto result = std::string(cvalue);
delete[] cvalue;
return result;
}
mvNodeEditor::mvNodeEditor(mvUUID uuid)
: mvAppItem(uuid)
{
_context = ImNodes::EditorContextCreate();
}
mvNodeEditor::~mvNodeEditor()
{
ImNodes::EditorContextFree(_context);
}
void mvNodeEditor::handleSpecificKeywordArgs(PyObject* dict)
{
if (dict == nullptr)
return;
if (PyObject* item = PyDict_GetItemString(dict, "delink_callback"))
{
if (_delinkCallback)
Py_XDECREF(_delinkCallback);
item = SanitizeCallback(item);
if (item)
Py_XINCREF(item);
_delinkCallback = item;
}
// helper for bit flipping
auto flagop = [dict](const char* keyword, int flag, int& flags)
{
if (PyObject* item = PyDict_GetItemString(dict, keyword)) ToBool(item) ? flags |= flag : flags &= ~flag;
};
// window flags
flagop("menubar", ImGuiWindowFlags_MenuBar, _windowflags);
if (PyObject* item = PyDict_GetItemString(dict, "minimap")) _minimap = ToBool(item);
if (PyObject* item = PyDict_GetItemString(dict, "minimap_location")) _minimapLocation = ToInt(item);
}
void mvNodeEditor::getSpecificConfiguration(PyObject* dict)
{
if (dict == nullptr)
return;
if (_delinkCallback)
{
Py_XINCREF(_delinkCallback);
PyDict_SetItemString(dict, "delink_callback", _delinkCallback);
}
else
PyDict_SetItemString(dict, "delink_callback", GetPyNone());
// helper to check and set bit
auto checkbitset = [dict](const char* keyword, int flag, const int& flags)
{
PyDict_SetItemString(dict, keyword, mvPyObject(ToPyBool(flags & flag)));
};
// window flags
checkbitset("menubar", ImGuiWindowFlags_MenuBar, _windowflags);
PyDict_SetItemString(dict, "minimap", mvPyObject(ToPyBool(_minimap)));
PyDict_SetItemString(dict, "minimap_location", mvPyObject(ToPyInt(_minimapLocation)));
}
void mvNodeEditor::onChildRemoved(std::shared_ptr<mvAppItem> item)
{
if (item->type == mvAppItemType::mvNode)
{
for (const auto& otherchild : item->childslots[1])
{
int attr_id = static_cast<mvNodeAttribute*>(otherchild.get())->getId();
for (const auto& child : childslots[0])
{
if (child->type == mvAppItemType::mvNodeLink)
{
int i1 = static_cast<mvNodeLink*>(child.get())->getId1();
int i2 = static_cast<mvNodeLink*>(child.get())->getId2();
if (i1 == attr_id || i2 == attr_id)
{
DeleteItem(*GContext->itemRegistry, child->uuid);
CleanUpItem(*GContext->itemRegistry, child->uuid);
}
}
}
}
}
}
std::vector<mvUUID> mvNodeEditor::getSelectedNodes() const
{
std::vector<mvUUID> result;
for (const auto& item : _selectedNodes)
{
for (const auto& child : childslots[1])
{
int i1 = item;
int i2 = static_cast<mvNode*>(child.get())->getId();
//if (static_cast<mvNode*>(child.get())->getId() == item)
if (i1 == i2)
result.push_back(child->uuid);
}
}
return result;
}
std::vector<mvUUID> mvNodeEditor::getSelectedLinks() const
{
std::vector<mvUUID> result;
for (const auto& item : _selectedLinks)
{
for (const auto& child : childslots[0])
{
if (child->type == mvAppItemType::mvNodeLink)
{
int i1 = item;
int i2 = static_cast<mvNodeLink*>(child.get())->getId();
if (i1 == i2)
result.push_back(child->uuid);
}
}
}
return result;
}
void mvNodeEditor::draw(ImDrawList* drawlist, float x, float y)
{
ScopedID id(uuid);
ImNodes::EditorContextSet(_context);
bool ret = ImGui::BeginChild(info.internalLabel.c_str(), ImVec2((float)config.width, (float)config.height), ImGuiChildFlags_None, _windowflags);
for (auto& item : childslots[1])
{
// skip nodes
if (item->type != mvAppItemType::mvMenuBar)
continue;
// set item width
if (item->config.width != 0)
ImGui::SetNextItemWidth((float)item->config.width);
item->draw(drawlist, x, y);
}
//ImNodes::PushAttributeFlag(ImNodesAttributeFlags_EnableLinkDetachWithDragClick);
ImNodes::PushAttributeFlag(ImNodesAttributeFlags_None);
ImNodesIO& io = ImNodes::GetIO();
io.LinkDetachWithModifierClick.Modifier = &ImGui::GetIO().KeyCtrl;
ImNodes::BeginNodeEditor();
if (_clearLinks)
{
ImNodes::ClearLinkSelection();
_clearLinks = false;
}
if (_clearNodes)
{
ImNodes::ClearNodeSelection();
_clearNodes = false;
}
// build links
for (auto& item : childslots[0])
item->draw(drawlist, x, y);
// draw nodes
for (auto& item : childslots[1])
{
// skip menu bars
if (item->type != mvAppItemType::mvNode)
continue;
// set item width
if (item->config.width != 0)
ImGui::SetNextItemWidth((float)item->config.width);
item->draw(drawlist, x, y);
}
state.lastFrameUpdate = GContext->frame;
state.hovered = ImNodes::IsEditorHovered();
state.visible = ret;
state.rectSize = { ImNodes::mvEditorGetSize().Max.x - ImNodes::mvEditorGetSize().Min.x, ImNodes::mvEditorGetSize().Max.y - ImNodes::mvEditorGetSize().Min.y };
if (_minimap)
{
ImNodes::MiniMap(0.2f, _minimapLocation);
}
ImNodes::EndNodeEditor();
ImNodes::PopAttributeFlag();
// post draw for links
for (auto& item : childslots[0])
item->customAction();
int nodeHovered = -1;
int linkHovered = -1;
int pinHovered = -1;
int attrActive = -1;
bool anyNodeHovered = ImNodes::IsNodeHovered(&nodeHovered);
bool anyLinkHovered = ImNodes::IsLinkHovered(&linkHovered);
bool anyPinHovered = ImNodes::IsPinHovered(&pinHovered);
bool anyAttrActive = ImNodes::IsAnyAttributeActive(&attrActive);
for (auto& child : childslots[0])
{
child->state.lastFrameUpdate = GContext->frame;
child->state.hovered = false;
if (anyLinkHovered && linkHovered == static_cast<mvNodeLink*>(child.get())->getId())
child->state.hovered = true;
}
for (auto& child : childslots[1])
{
child->state.lastFrameUpdate = GContext->frame;
child->state.hovered = false;
if (child->config.show)
{
// We can only refer to visible nodes here
ImVec2 size = ImNodes::GetNodeDimensions(static_cast<mvNode*>(child.get())->getId());
child->state.rectSize = { size.x, size.y };
}
else
child->state.rectSize = { 0.0f, 0.0f };
if (anyNodeHovered && nodeHovered == static_cast<mvNode*>(child.get())->getId())
child->state.hovered = true;
for (auto& grandchild : child->childslots[1])
{
grandchild->state.lastFrameUpdate = GContext->frame;
grandchild->state.hovered = false;
if (anyPinHovered && pinHovered == static_cast<mvNodeAttribute*>(grandchild.get())->getId())
grandchild->state.hovered = true;
if (anyAttrActive && attrActive == static_cast<mvNodeAttribute*>(grandchild.get())->getId())
grandchild->state.active = true;
}
}
_selectedNodes.clear();
if (ImNodes::NumSelectedNodes() > 0)
{
int* selected_nodes = new int[ImNodes::NumSelectedNodes()];
ImNodes::GetSelectedNodes(selected_nodes);
for (int i = 0; i < ImNodes::NumSelectedNodes(); i++)
_selectedNodes.push_back(selected_nodes[i]);
delete[] selected_nodes;
}
_selectedLinks.clear();
if (ImNodes::NumSelectedLinks() > 0)
{
int* selected_links = new int[ImNodes::NumSelectedLinks()];
ImNodes::GetSelectedLinks(selected_links);
for (int i = 0; i < ImNodes::NumSelectedLinks(); i++)
_selectedLinks.push_back(selected_links[i]);
delete[] selected_links;
}
static int start_attr, end_attr;
if (ImNodes::IsLinkCreated(&start_attr, &end_attr))
{
mvUUID node1, node2;
for (const auto& child : childslots[1])
{
// skip menu bars
if (child->type != mvAppItemType::mvNode)
continue;
for (const auto& grandchild : child->childslots[1])
{
if (static_cast<mvNodeAttribute*>(grandchild.get())->getId() == start_attr)
node1 = grandchild->uuid;
if (static_cast<mvNodeAttribute*>(grandchild.get())->getId() == end_attr)
node2 = grandchild->uuid;
}
}
if (config.callback)
{
if (config.alias.empty())
mvSubmitCallback([=]() {
PyObject* link = PyTuple_New(2);
PyTuple_SetItem(link, 0, ToPyUUID(node1));
PyTuple_SetItem(link, 1, ToPyUUID(node2));
mvAddCallback(config.callback, uuid, link, config.user_data);
});
else
mvSubmitCallback([=]() {
PyObject* link = PyTuple_New(2);
PyTuple_SetItem(link, 0, ToPyUUID(node1));
PyTuple_SetItem(link, 1, ToPyUUID(node2));
mvAddCallback(config.callback, config.alias, link, config.user_data);
});
}
}
static int destroyed_attr;
if (ImNodes::IsLinkDestroyed(&destroyed_attr))
{
mvUUID name = 0;
for (auto& item : childslots[0])
{
if (item->type == mvAppItemType::mvNodeLink)
{
if (static_cast<const mvNodeLink*>(item.get())->_id0 == destroyed_attr)
{
name = item->uuid;
break;
}
}
}
if (_delinkCallback)
{
if (config.alias.empty())
mvSubmitCallback([=]() {
PyObject* link = ToPyUUID(name);
mvAddCallback(_delinkCallback, uuid, link, config.user_data);
});
else
mvSubmitCallback([=]() {
PyObject* link = ToPyUUID(name);
mvAddCallback(_delinkCallback, config.alias, link, config.user_data);
});
}
}
ImGui::EndChild();
if (handlerRegistry)
handlerRegistry->checkEvents(&state);
}
mvNode::mvNode(mvUUID uuid)
: mvAppItem(uuid)
{
info.internalLabel = FindRenderedTextEnd(info.internalLabel.c_str()) + std::to_string(uuid);
config.specifiedLabel = info.internalLabel;
int64_t address = (int64_t)this;
int64_t reduced_address = address % 2147483648;
_id = (int)reduced_address;
}
void mvNode::draw(ImDrawList* drawlist, float x, float y)
{
//-----------------------------------------------------------------------------
// pre draw
//-----------------------------------------------------------------------------
// show/hide
if (!config.show)
return;
// set item width
if (config.width != 0)
ImGui::SetNextItemWidth((float)config.width);
// indent (for children
if (config.indent > 0.0f)
ImGui::Indent(config.indent);
// push font if a font object is attached
if (font)
{
ImFont* fontptr = static_cast<mvFont*>(font.get())->getFontPtr();
ImGui::PushFont(fontptr);
}
// themes
apply_local_theming(this);
//-----------------------------------------------------------------------------
// draw
//-----------------------------------------------------------------------------
{
ScopedID id(uuid);
if (info.dirtyPos)
{
ImNodes::SetNodeGridSpacePos((int)_id, state.pos);
info.dirtyPos = false;
}
ImNodes::SetNodeDraggable((int)_id, _draggable);
ImNodes::BeginNode(_id);
ImNodes::BeginNodeTitleBar();
ImGui::TextUnformatted(config.specifiedLabel.c_str());
ImNodes::EndNodeTitleBar();
state.lastFrameUpdate = GContext->frame;
state.leftclicked = ImGui::IsItemClicked();
state.rightclicked = ImGui::IsItemClicked(1);
state.middleclicked = ImGui::IsItemClicked(2);
for (int i = 0; i < state.doubleclicked.size(); i++)
{
state.doubleclicked[i] = IsItemDoubleClicked(i);
}
state.visible = ImGui::IsItemVisible();
for (auto& item : childslots[1])
{
// skip item if it's not shown
if (!item->config.show)
continue;
// set item width
if (item->config.width != 0)
ImGui::SetNextItemWidth((float)item->config.width);
item->draw(drawlist, x, y);
}
ImNodes::EndNode();
}
//-----------------------------------------------------------------------------
// post draw
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// update state
// * only update if applicable
//-----------------------------------------------------------------------------
ImVec2 pos = ImNodes::GetNodeGridSpacePos((int)_id);
state.pos = { pos.x , pos.y };
state.rectSize = { ImGui::GetItemRectSize().x, ImGui::GetItemRectSize().y };
state.rectMax = { ImGui::GetItemRectMax().x, ImGui::GetItemRectMax().y };
state.rectMin = { ImGui::GetItemRectMin().x, ImGui::GetItemRectMin().y };
// undo indents
if (config.indent > 0.0f)
ImGui::Unindent(config.indent);
// pop font off stack
if (font)
ImGui::PopFont();
// handle popping themes
cleanup_local_theming(this);
if (handlerRegistry)
handlerRegistry->checkEvents(&state);
// handle drag & drop payloads
apply_drag_drop(this);
}
void mvNode::handleSpecificKeywordArgs(PyObject* dict)
{
if (dict == nullptr)
return;
if (PyObject* item = PyDict_GetItemString(dict, "draggable")) _draggable = ToBool(item);
}
void mvNode::getSpecificConfiguration(PyObject* dict)
{
if (dict == nullptr)
return;
PyDict_SetItemString(dict, "draggable", mvPyObject(ToPyBool(_draggable)));
}
mvNodeAttribute::mvNodeAttribute(mvUUID uuid)
: mvAppItem(uuid)
{
int64_t address = (int64_t)this;
int64_t reduced_address = address % 2147483648;
_id = (int)reduced_address;
}
void mvNodeAttribute::draw(ImDrawList* drawlist, float x, float y)
{
//-----------------------------------------------------------------------------
// pre draw
//-----------------------------------------------------------------------------
// show/hide
if (!config.show)
return;
// set item width
if (config.width != 0)
ImGui::SetNextItemWidth((float)config.width);
// indent (for children
if (config.indent > 0.0f)
ImGui::Indent(config.indent);
// push font if a font object is attached
if (font)
{
ImFont* fontptr = static_cast<mvFont*>(font.get())->getFontPtr();
ImGui::PushFont(fontptr);
}
// themes
apply_local_theming(this);
//-----------------------------------------------------------------------------
// draw
//-----------------------------------------------------------------------------
{
ScopedID id(uuid);
if (_attrType == mvNodeAttribute::AttributeType::mvAttr_Static)
ImNodes::BeginStaticAttribute((int)_id);
else if (_attrType == mvNodeAttribute::AttributeType::mvAttr_Output)
ImNodes::BeginOutputAttribute((int)_id, _shape);
else
ImNodes::BeginInputAttribute((int)_id, _shape);
for (auto& item : childslots[1])
{
// skip item if it's not shown
if (!item->config.show)
continue;
// set item width
if (item->config.width != 0)
ImGui::SetNextItemWidth((float)item->config.width);
if (item->info.focusNextFrame)
{
ImGui::SetKeyboardFocusHere();
item->info.focusNextFrame = false;
}
auto oldCursorPos = ImGui::GetCursorPos();
if (item->info.dirtyPos)
ImGui::SetCursorPos(item->state.pos);
item->state.pos = { ImGui::GetCursorPosX(), ImGui::GetCursorPosY() };
item->draw(drawlist, x, y);
if (item->info.dirtyPos)
ImGui::SetCursorPos(oldCursorPos);
UpdateAppItemState(item->state);
}
if (_attrType == mvNodeAttribute::AttributeType::mvAttr_Static)
ImNodes::EndStaticAttribute();
else if (_attrType == mvNodeAttribute::AttributeType::mvAttr_Output)
ImNodes::EndOutputAttribute();
else
ImNodes::EndInputAttribute();
}
// undo indents
if (config.indent > 0.0f)
ImGui::Unindent(config.indent);
// pop font off stack
if (font)
ImGui::PopFont();
// handle popping themes
cleanup_local_theming(this);
}
void mvNodeAttribute::handleSpecificKeywordArgs(PyObject* dict)
{
if (dict == nullptr)
return;
if (PyObject* item = PyDict_GetItemString(dict, "category")) _category = ToString(item);
if (PyObject* item = PyDict_GetItemString(dict, "attribute_type")) _attrType = (mvNodeAttribute::AttributeType)ToUUID(item);
if (PyObject* item = PyDict_GetItemString(dict, "shape"))
{
_shape = (ImNodesPinShape)ToInt(item);
}
}
void mvNodeAttribute::getSpecificConfiguration(PyObject* dict)
{
if (dict == nullptr)
return;
PyDict_SetItemString(dict, "attribute_type", mvPyObject(ToPyLong((long)_attrType)));
PyDict_SetItemString(dict, "shape", mvPyObject(ToPyInt((int)_shape)));
PyDict_SetItemString(dict, "category", mvPyObject(ToPyString(_category)));
}
mvNodeLink::mvNodeLink(mvUUID uuid)
: mvAppItem(uuid)
{
int64_t address = (int64_t)this;
int64_t reduced_address = address % 2147483648;
_id0 = (int)reduced_address;
}
void mvNodeLink::handleSpecificRequiredArgs(PyObject* dict)
{
if (!VerifyRequiredArguments(GetParsers()[GetEntityCommand(type)], dict))
return;
mvUUID node1 = GetIDFromPyObject(PyTuple_GetItem(dict, 0));
{
mvAppItem* node = GetItem(*GContext->itemRegistry, node1);
if (node->type == mvAppItemType::mvNodeAttribute)
{
_id1uuid = node1;
_id1 = static_cast<const mvNodeAttribute*>(node)->getId();
}
else
{
mvThrowPythonError(mvErrorCode::mvIncompatibleType, GetEntityCommand(type),
"Incompatible type. Expected types include: mvNode", node);
assert(false);
return;
}
}
mvUUID node2 = GetIDFromPyObject(PyTuple_GetItem(dict, 1));
{
mvAppItem* node = GetItem(*GContext->itemRegistry, node2);
if (node->type == mvAppItemType::mvNodeAttribute)
{
_id2uuid = node2;
_id2 = static_cast<const mvNodeAttribute*>(node)->getId();
}
else
{
mvThrowPythonError(mvErrorCode::mvIncompatibleType, GetEntityCommand(type),
"Incompatible type. Expected types include: mvNode", node);
assert(false);
return;
}
}
}
void mvNodeLink::customAction(void* data)
{
if (handlerRegistry)
handlerRegistry->checkEvents(&state);
}
void mvNodeLink::draw(ImDrawList* drawlist, float x, float y)
{
//-----------------------------------------------------------------------------
// pre draw
//-----------------------------------------------------------------------------
// show/hide
if (!config.show)
return;
// set item width
if (config.width != 0)
ImGui::SetNextItemWidth((float)config.width);
// themes
apply_local_theming(this);
//-----------------------------------------------------------------------------
// draw
//-----------------------------------------------------------------------------
ScopedID id(uuid);
ImNodes::Link(_id0, _id1, _id2);
//-----------------------------------------------------------------------------
// post draw
//-----------------------------------------------------------------------------
state.lastFrameUpdate = GContext->frame;
//-----------------------------------------------------------------------------
// update state
// * only update if applicable
//-----------------------------------------------------------------------------
//_state.hovered = ImNodes::IsLinkHovered(&_id);
state.visible = ImGui::IsItemVisible();
//_state.active = ImNodes::IsLinkStarted(&_id);
//_state.deactivated = ImNodes::IsLinkDropped(&_id);
// handle popping themes
cleanup_local_theming(this);
}
void mvNodeLink::getSpecificConfiguration(PyObject* dict)
{
if (dict == nullptr)
return;
PyDict_SetItemString(dict, "attr_1", mvPyObject(ToPyUUID(_id1uuid)));
PyDict_SetItemString(dict, "attr_2", mvPyObject(ToPyUUID(_id2uuid)));
}