1089 lines
28 KiB
C++
1089 lines
28 KiB
C++
// https://github.com/vassvik/imgui_docking_minimal/
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//
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// This is free and unencumbered software released into the public domain.
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//
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// Anyone is free to copy, modify, publish, use, compile, sell, or
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// distribute this software, either in source code form or as a compiled
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// binary, for any purpose, commercial or non-commercial, and by any
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// means.
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//
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// In jurisdictions that recognize copyright laws, the author or authors
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// of this software dedicate any and all copyright interest in the
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// software to the public domain. We make this dedication for the benefit
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// of the public at large and to the detriment of our heirs and
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// successors. We intend this dedication to be an overt act of
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// relinquishment in perpetuity of all present and future rights to this
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// software under copyright law.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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// OTHER DEALINGS IN THE SOFTWARE.
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//
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// For more information, please refer to <http://unlicense.org>
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#include <new> // placement new
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namespace ImGui
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{
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struct DockContext
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{
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enum Slot_
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{
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Slot_Left,
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Slot_Right,
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Slot_Top,
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Slot_Bottom,
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Slot_Tab,
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Slot_Float,
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Slot_None
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};
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enum EndAction_
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{
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EndAction_None,
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EndAction_Panel,
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EndAction_End,
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EndAction_EndChild
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};
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enum Status_
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{
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Status_Docked,
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Status_Float,
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Status_Dragged
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};
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struct Dock
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{
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Dock()
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: id(0)
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, label(NULL)
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, next_tab(NULL)
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, prev_tab(NULL)
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, parent(NULL)
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, pos(0, 0)
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, size(-1, -1)
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, active(true)
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, status(Status_Float)
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, opened(false)
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, first(true)
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{
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location[0] = 0;
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children[0] = children[1] = NULL;
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}
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~Dock()
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{
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MemFree(label);
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}
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ImVec2 getMinSize() const
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{
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if (!children[0]) return ImVec2(16, 16 + GetTextLineHeightWithSpacing());
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ImVec2 s0 = children[0]->getMinSize();
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ImVec2 s1 = children[1]->getMinSize();
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return isHorizontal() ? ImVec2(s0.x + s1.x, ImMax(s0.y, s1.y))
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: ImVec2(ImMax(s0.x, s1.x), s0.y + s1.y);
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}
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bool isHorizontal() const
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{
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return children[0]->pos.x < children[1]->pos.x;
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}
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void setParent(Dock* dock)
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{
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parent = dock;
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for (Dock* tmp = prev_tab; tmp; tmp = tmp->prev_tab) tmp->parent = dock;
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for (Dock* tmp = next_tab; tmp; tmp = tmp->next_tab) tmp->parent = dock;
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}
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Dock& getSibling()
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{
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IM_ASSERT(parent);
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if (parent->children[0] == &getFirstTab()) return *parent->children[1];
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return *parent->children[0];
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}
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Dock& getFirstTab()
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{
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Dock* tmp = this;
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while (tmp->prev_tab) tmp = tmp->prev_tab;
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return *tmp;
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}
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void setActive()
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{
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active = true;
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for (Dock* tmp = prev_tab; tmp; tmp = tmp->prev_tab) tmp->active = false;
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for (Dock* tmp = next_tab; tmp; tmp = tmp->next_tab) tmp->active = false;
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}
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bool isContainer() const
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{
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return children[0] != NULL;
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}
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void setChildrenPosSize(const ImVec2& _pos, const ImVec2& _size)
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{
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ImVec2 s = children[0]->size;
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if (isHorizontal())
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{
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s.y = _size.y;
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s.x = (float)int(
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_size.x * children[0]->size.x / (children[0]->size.x + children[1]->size.x));
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if (s.x < children[0]->getMinSize().x)
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{
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s.x = children[0]->getMinSize().x;
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}
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else if (_size.x - s.x < children[1]->getMinSize().x)
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{
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s.x = _size.x - children[1]->getMinSize().x;
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}
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children[0]->setPosSize(_pos, s);
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s.x = _size.x - children[0]->size.x;
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ImVec2 p = _pos;
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p.x += children[0]->size.x;
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children[1]->setPosSize(p, s);
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}
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else
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{
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s.x = _size.x;
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s.y = (float)int(
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_size.y * children[0]->size.y / (children[0]->size.y + children[1]->size.y));
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if (s.y < children[0]->getMinSize().y)
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{
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s.y = children[0]->getMinSize().y;
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}
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else if (_size.y - s.y < children[1]->getMinSize().y)
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{
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s.y = _size.y - children[1]->getMinSize().y;
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}
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children[0]->setPosSize(_pos, s);
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s.y = _size.y - children[0]->size.y;
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ImVec2 p = _pos;
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p.y += children[0]->size.y;
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children[1]->setPosSize(p, s);
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}
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}
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void setPosSize(const ImVec2& _pos, const ImVec2& _size)
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{
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size = _size;
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pos = _pos;
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for (Dock* tmp = prev_tab; tmp; tmp = tmp->prev_tab)
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{
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tmp->size = _size;
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tmp->pos = _pos;
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}
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for (Dock* tmp = next_tab; tmp; tmp = tmp->next_tab)
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{
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tmp->size = _size;
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tmp->pos = _pos;
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}
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if (!isContainer()) return;
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setChildrenPosSize(_pos, _size);
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}
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ImU32 id;
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char* label;
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Dock* next_tab;
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Dock* prev_tab;
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Dock* parent;
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ImVec2 pos;
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ImVec2 size;
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bool active;
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Status_ status;
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bool opened;
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Dock* children[2];
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char location[16];
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int last_frame;
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int invalid_frames;
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bool first;
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};
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typedef ImVector<Dock*> DockVector;
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DockVector m_docks;
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ImVec2 m_drag_offset;
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Dock* m_current;
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int m_last_frame;
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EndAction_ m_end_action;
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DockContext()
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: m_current(NULL)
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, m_last_frame(0)
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{
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}
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~DockContext()
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{
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}
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Dock& getDock(const char* label, bool opened)
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{
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ImU32 id = ImHash(label, 0);
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for (int i = 0; i < m_docks.size(); ++i)
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{
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if (m_docks[i]->id == id)
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{
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return *m_docks[i];
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}
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}
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Dock* new_dock = (Dock*)MemAlloc(sizeof(Dock));
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IM_PLACEMENT_NEW(new_dock) Dock();
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m_docks.push_back(new_dock);
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new_dock->label = ImStrdup(label);
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IM_ASSERT(new_dock->label);
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new_dock->id = id;
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new_dock->setActive();
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new_dock->status = Status_Float;
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new_dock->pos = ImVec2(0, 0);
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new_dock->size = GetIO().DisplaySize;
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new_dock->opened = opened;
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new_dock->first = true;
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new_dock->last_frame = 0;
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new_dock->invalid_frames = 0;
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new_dock->location[0] = 0;
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return *new_dock;
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}
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void putInBackground()
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{
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ImGuiWindow* win = GetCurrentWindow();
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ImGuiContext& g = *GImGui;
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if (g.Windows[0] == win) return;
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for (int i = 0; i < g.Windows.Size; i++)
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{
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if (g.Windows[i] == win)
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{
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for (int j = i - 1; j >= 0; --j)
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{
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g.Windows[j + 1] = g.Windows[j];
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}
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g.Windows[0] = win;
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break;
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}
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}
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}
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void splits()
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{
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if (GetFrameCount() == m_last_frame)
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{
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return;
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}
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m_last_frame = GetFrameCount();
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putInBackground();
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ImU32 color = GetColorU32(ImGuiCol_Button);
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ImU32 color_hovered = GetColorU32(ImGuiCol_ButtonHovered);
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ImDrawList* draw_list = GetWindowDrawList();
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ImGuiIO& io = GetIO();
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for (int i = 0; i < m_docks.size(); ++i)
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{
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Dock& dock = *m_docks[i];
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if (!dock.isContainer())
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{
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continue;
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}
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PushID(i);
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if (!IsMouseDown(0))
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{
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dock.status = Status_Docked;
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}
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ImVec2 dsize(0, 0);
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SetCursorScreenPos(dock.children[1]->pos);
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ImVec2 min_size0 = dock.children[0]->getMinSize();
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ImVec2 min_size1 = dock.children[1]->getMinSize();
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if (dock.isHorizontal())
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{
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InvisibleButton("split", ImVec2(3, dock.size.y));
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if (dock.status == Status_Dragged) dsize.x = io.MouseDelta.x;
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dsize.x = -ImMin(-dsize.x, dock.children[0]->size.x - min_size0.x);
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dsize.x = ImMin(dsize.x, dock.children[1]->size.x - min_size1.x);
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}
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else
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{
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InvisibleButton("split", ImVec2(dock.size.x, 3));
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if (dock.status == Status_Dragged) dsize.y = io.MouseDelta.y;
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dsize.y = -ImMin(-dsize.y, dock.children[0]->size.y - min_size0.y);
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dsize.y = ImMin(dsize.y, dock.children[1]->size.y - min_size1.y);
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}
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ImVec2 new_size0 = dock.children[0]->size + dsize;
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ImVec2 new_size1 = dock.children[1]->size - dsize;
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ImVec2 new_pos1 = dock.children[1]->pos + dsize;
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dock.children[0]->setPosSize(dock.children[0]->pos, new_size0);
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dock.children[1]->setPosSize(new_pos1, new_size1);
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if (IsItemHovered() && IsMouseClicked(0))
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{
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dock.status = Status_Dragged;
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}
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draw_list->AddRectFilled(
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GetItemRectMin(), GetItemRectMax(), IsItemHovered() ? color_hovered : color);
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PopID();
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}
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}
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void checkNonexistent()
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{
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int frame_limit = ImMax(0, ImGui::GetFrameCount() - 2);
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for (DockVector::iterator it = m_docks.begin(), itEnd = m_docks.end(); it != itEnd; ++it)
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{
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Dock* dock = *it;
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if (dock->isContainer()) continue;
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if (dock->status == Status_Float) continue;
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if (dock->last_frame < frame_limit)
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{
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++dock->invalid_frames;
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if (dock->invalid_frames > 2)
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{
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doUndock(*dock);
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dock->status = Status_Float;
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}
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return;
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}
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dock->invalid_frames = 0;
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}
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}
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void beginPanel()
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{
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ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
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ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoCollapse |
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ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoScrollbar |
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ImGuiWindowFlags_NoScrollWithMouse |
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ImGuiWindowFlags_NoBringToFrontOnFocus;
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Dock* root = getRootDock();
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const ImVec2& displaySize = GetIO().DisplaySize;
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if (root)
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{
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const ImVec2 percentage(displaySize.x / root->size.x, displaySize.y / root->size.y );
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const ImVec2 rescaledPos = root->pos * percentage;
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const ImVec2 rescaledSize = root->size * percentage;
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SetNextWindowPos(rescaledPos);
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SetNextWindowSize(rescaledSize);
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}
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else
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{
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SetNextWindowPos(ImVec2(0, 0));
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SetNextWindowSize(displaySize);
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}
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ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0);
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Begin("###DockPanel", NULL, flags);
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splits();
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checkNonexistent();
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}
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void endPanel()
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{
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End();
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ImGui::PopStyleVar();
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}
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// Doesn't use input??
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Dock* getDockAt(const ImVec2& /*pos*/) const
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{
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for (int i = 0; i < m_docks.size(); ++i)
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{
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Dock& dock = *m_docks[i];
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if (dock.isContainer()) continue;
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if (dock.status != Status_Docked) continue;
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if (IsMouseHoveringRect(dock.pos, dock.pos + dock.size, false))
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{
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return &dock;
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}
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}
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return NULL;
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}
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static ImRect getDockedRect(const ImRect& rect, Slot_ dock_slot)
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{
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ImVec2 half_size = rect.GetSize() * 0.5f;
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switch (dock_slot)
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{
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default: return rect;
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case Slot_Top: return ImRect(rect.Min, rect.Min + ImVec2(rect.Max.x, half_size.y));
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case Slot_Right: return ImRect(rect.Min + ImVec2(half_size.x, 0), rect.Max);
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case Slot_Bottom: return ImRect(rect.Min + ImVec2(0, half_size.y), rect.Max);
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case Slot_Left: return ImRect(rect.Min, rect.Min + ImVec2(half_size.x, rect.Max.y));
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}
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}
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static ImRect getSlotRect(ImRect parent_rect, Slot_ dock_slot)
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{
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ImVec2 size = parent_rect.Max - parent_rect.Min;
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ImVec2 center = parent_rect.Min + size * 0.5f;
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switch (dock_slot)
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{
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default: return ImRect(center - ImVec2(20, 20), center + ImVec2(20, 20));
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case Slot_Top: return ImRect(center + ImVec2(-20, -50), center + ImVec2(20, -30));
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case Slot_Right: return ImRect(center + ImVec2(30, -20), center + ImVec2(50, 20));
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case Slot_Bottom: return ImRect(center + ImVec2(-20, +30), center + ImVec2(20, 50));
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case Slot_Left: return ImRect(center + ImVec2(-50, -20), center + ImVec2(-30, 20));
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}
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}
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static ImRect getSlotRectOnBorder(ImRect parent_rect, Slot_ dock_slot)
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{
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ImVec2 size = parent_rect.Max - parent_rect.Min;
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ImVec2 center = parent_rect.Min + size * 0.5f;
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switch (dock_slot)
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{
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case Slot_Top:
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return ImRect(ImVec2(center.x - 20, parent_rect.Min.y + 10),
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ImVec2(center.x + 20, parent_rect.Min.y + 30));
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case Slot_Left:
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return ImRect(ImVec2(parent_rect.Min.x + 10, center.y - 20),
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ImVec2(parent_rect.Min.x + 30, center.y + 20));
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case Slot_Bottom:
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return ImRect(ImVec2(center.x - 20, parent_rect.Max.y - 30),
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ImVec2(center.x + 20, parent_rect.Max.y - 10));
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case Slot_Right:
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return ImRect(ImVec2(parent_rect.Max.x - 30, center.y - 20),
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ImVec2(parent_rect.Max.x - 10, center.y + 20));
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default: IM_ASSERT(false);
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}
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IM_ASSERT(false);
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return ImRect();
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}
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Dock* getRootDock()
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{
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for (int i = 0; i < m_docks.size(); ++i)
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{
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if (!m_docks[i]->parent &&
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(m_docks[i]->status == Status_Docked || m_docks[i]->children[0]))
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{
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return m_docks[i];
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}
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}
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return NULL;
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}
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bool dockSlots(Dock& dock, Dock* dest_dock, const ImRect& rect, bool on_border)
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{
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ImDrawList* canvas = GetWindowDrawList();
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ImU32 color = GetColorU32(ImGuiCol_Button);
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ImU32 color_hovered = GetColorU32(ImGuiCol_ButtonHovered);
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ImVec2 mouse_pos = GetIO().MousePos;
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for (int i = 0; i < (on_border ? 4 : 5); ++i)
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{
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ImRect r =
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on_border ? getSlotRectOnBorder(rect, (Slot_)i) : getSlotRect(rect, (Slot_)i);
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bool hovered = r.Contains(mouse_pos);
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canvas->AddRectFilled(r.Min, r.Max, hovered ? color_hovered : color);
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if (!hovered) continue;
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if (!IsMouseDown(0))
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{
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doDock(dock, dest_dock ? dest_dock : getRootDock(), (Slot_)i);
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return true;
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}
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ImRect docked_rect = getDockedRect(rect, (Slot_)i);
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canvas->AddRectFilled(docked_rect.Min, docked_rect.Max, GetColorU32(ImGuiCol_Button));
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}
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return false;
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}
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void handleDrag(Dock& dock)
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{
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Dock* dest_dock = getDockAt(GetIO().MousePos);
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Begin("##Overlay",
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NULL,
|
|
ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoMove |
|
|
ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoSavedSettings |
|
|
ImGuiWindowFlags_AlwaysAutoResize);
|
|
ImDrawList* canvas = GetWindowDrawList();
|
|
|
|
canvas->PushClipRectFullScreen();
|
|
|
|
ImU32 docked_color = GetColorU32(ImGuiCol_FrameBg);
|
|
docked_color = (docked_color & 0x00ffFFFF) | 0x80000000;
|
|
dock.pos = GetIO().MousePos - m_drag_offset;
|
|
if (dest_dock)
|
|
{
|
|
if (dockSlots(dock,
|
|
dest_dock,
|
|
ImRect(dest_dock->pos, dest_dock->pos + dest_dock->size),
|
|
false))
|
|
{
|
|
canvas->PopClipRect();
|
|
End();
|
|
return;
|
|
}
|
|
}
|
|
if (dockSlots(dock, NULL, ImRect(ImVec2(0, 0), GetIO().DisplaySize), true))
|
|
{
|
|
canvas->PopClipRect();
|
|
End();
|
|
return;
|
|
}
|
|
canvas->AddRectFilled(dock.pos, dock.pos + dock.size, docked_color);
|
|
canvas->PopClipRect();
|
|
|
|
if (!IsMouseDown(0))
|
|
{
|
|
dock.status = Status_Float;
|
|
dock.location[0] = 0;
|
|
dock.setActive();
|
|
}
|
|
|
|
End();
|
|
}
|
|
|
|
void fillLocation(Dock& dock)
|
|
{
|
|
if (dock.status == Status_Float) return;
|
|
char* c = dock.location;
|
|
Dock* tmp = &dock;
|
|
while (tmp->parent)
|
|
{
|
|
*c = getLocationCode(tmp);
|
|
tmp = tmp->parent;
|
|
++c;
|
|
}
|
|
*c = 0;
|
|
}
|
|
|
|
void doUndock(Dock& dock)
|
|
{
|
|
if (dock.prev_tab)
|
|
dock.prev_tab->setActive();
|
|
else if (dock.next_tab)
|
|
dock.next_tab->setActive();
|
|
else
|
|
dock.active = false;
|
|
Dock* container = dock.parent;
|
|
|
|
if (container)
|
|
{
|
|
Dock& sibling = dock.getSibling();
|
|
if (container->children[0] == &dock)
|
|
{
|
|
container->children[0] = dock.next_tab;
|
|
}
|
|
else if (container->children[1] == &dock)
|
|
{
|
|
container->children[1] = dock.next_tab;
|
|
}
|
|
|
|
bool remove_container = !container->children[0] || !container->children[1];
|
|
if (remove_container)
|
|
{
|
|
if (container->parent)
|
|
{
|
|
Dock*& child = container->parent->children[0] == container
|
|
? container->parent->children[0]
|
|
: container->parent->children[1];
|
|
child = &sibling;
|
|
child->setPosSize(container->pos, container->size);
|
|
child->setParent(container->parent);
|
|
}
|
|
else
|
|
{
|
|
if (container->children[0])
|
|
{
|
|
container->children[0]->setParent(NULL);
|
|
container->children[0]->setPosSize(container->pos, container->size);
|
|
}
|
|
if (container->children[1])
|
|
{
|
|
container->children[1]->setParent(NULL);
|
|
container->children[1]->setPosSize(container->pos, container->size);
|
|
}
|
|
}
|
|
for (int i = 0; i < m_docks.size(); ++i)
|
|
{
|
|
if (m_docks[i] == container)
|
|
{
|
|
m_docks.erase(m_docks.begin() + i);
|
|
break;
|
|
}
|
|
}
|
|
container->~Dock();
|
|
MemFree(container);
|
|
}
|
|
}
|
|
if (dock.prev_tab) dock.prev_tab->next_tab = dock.next_tab;
|
|
if (dock.next_tab) dock.next_tab->prev_tab = dock.prev_tab;
|
|
dock.parent = NULL;
|
|
dock.prev_tab = dock.next_tab = NULL;
|
|
}
|
|
|
|
void drawTabbarListButton(Dock& dock)
|
|
{
|
|
if (!dock.next_tab) return;
|
|
|
|
ImDrawList* draw_list = GetWindowDrawList();
|
|
if (InvisibleButton("list", ImVec2(16, 16)))
|
|
{
|
|
OpenPopup("tab_list_popup");
|
|
}
|
|
if (BeginPopup("tab_list_popup"))
|
|
{
|
|
Dock* tmp = &dock;
|
|
while (tmp)
|
|
{
|
|
bool dummy = false;
|
|
if (Selectable(tmp->label, &dummy))
|
|
{
|
|
tmp->setActive();
|
|
}
|
|
tmp = tmp->next_tab;
|
|
}
|
|
EndPopup();
|
|
}
|
|
|
|
bool hovered = IsItemHovered();
|
|
ImVec2 min = GetItemRectMin();
|
|
ImVec2 max = GetItemRectMax();
|
|
ImVec2 center = (min + max) * 0.5f;
|
|
ImU32 text_color = GetColorU32(ImGuiCol_Text);
|
|
ImU32 color_active = GetColorU32(ImGuiCol_FrameBgActive);
|
|
draw_list->AddRectFilled(ImVec2(center.x - 4, min.y + 3),
|
|
ImVec2(center.x + 4, min.y + 5),
|
|
hovered ? color_active : text_color);
|
|
draw_list->AddTriangleFilled(ImVec2(center.x - 4, min.y + 7),
|
|
ImVec2(center.x + 4, min.y + 7),
|
|
ImVec2(center.x, min.y + 12),
|
|
hovered ? color_active : text_color);
|
|
}
|
|
|
|
bool tabbar(Dock& dock, bool close_button)
|
|
{
|
|
float tabbar_height = 2 * GetTextLineHeightWithSpacing();
|
|
ImVec2 size0(dock.size.x, tabbar_height);
|
|
bool tab_closed = false;
|
|
|
|
SetCursorScreenPos(dock.pos);
|
|
char tmp[20];
|
|
ImFormatString(tmp, IM_ARRAYSIZE(tmp), "tabs%d", (int)dock.id);
|
|
if (BeginChild(tmp, size0, true))
|
|
{
|
|
Dock* dock_tab = &dock;
|
|
|
|
ImDrawList* draw_list = GetWindowDrawList();
|
|
ImU32 color = GetColorU32(ImGuiCol_FrameBg);
|
|
ImU32 color_active = GetColorU32(ImGuiCol_FrameBgActive);
|
|
ImU32 color_hovered = GetColorU32(ImGuiCol_FrameBgHovered);
|
|
ImU32 text_color = GetColorU32(ImGuiCol_Text);
|
|
ImU32 text_color_disabled = GetColorU32(ImGuiCol_TextDisabled);
|
|
float line_height = GetTextLineHeightWithSpacing();
|
|
float tab_base;
|
|
|
|
drawTabbarListButton(dock);
|
|
|
|
while (dock_tab)
|
|
{
|
|
SameLine(0, 15);
|
|
|
|
const char* text_end = FindRenderedTextEnd(dock_tab->label);
|
|
ImVec2 size1(CalcTextSize(dock_tab->label, text_end).x, line_height);
|
|
if (InvisibleButton(dock_tab->label, size1))
|
|
{
|
|
dock_tab->setActive();
|
|
}
|
|
|
|
if (IsItemActive() && IsMouseDragging())
|
|
{
|
|
m_drag_offset = GetMousePos() - dock_tab->pos;
|
|
doUndock(*dock_tab);
|
|
dock_tab->status = Status_Dragged;
|
|
}
|
|
|
|
bool hovered = IsItemHovered();
|
|
ImVec2 pos = GetItemRectMin();
|
|
size1.x += 20 + GetStyle().ItemSpacing.x;
|
|
|
|
tab_base = pos.y;
|
|
|
|
draw_list->AddRectFilled(pos+ImVec2(-8.0f, 0.0),
|
|
pos+size1,
|
|
hovered ? color_hovered : (dock_tab->active ? color_active : color));
|
|
draw_list->AddText(pos, text_color, dock_tab->label, text_end);
|
|
|
|
if (dock_tab->active && close_button)
|
|
{
|
|
SameLine();
|
|
tab_closed = InvisibleButton("close", ImVec2(16, 16));
|
|
|
|
ImVec2 center = ((GetItemRectMin() + GetItemRectMax()) * 0.5f);
|
|
draw_list->AddLine( center + ImVec2(-3.5f, -3.5f), center + ImVec2(3.5f, 3.5f), text_color);
|
|
draw_list->AddLine( center + ImVec2(3.5f, -3.5f), center + ImVec2(-3.5f, 3.5f), text_color);
|
|
} else {
|
|
if(!dock_tab->active && close_button) {
|
|
SameLine();
|
|
InvisibleButton("close", ImVec2(16, 16));
|
|
|
|
ImVec2 center = ((GetItemRectMin() + GetItemRectMax()) * 0.5f);
|
|
draw_list->AddLine( center + ImVec2(-3.5f, -3.5f), center + ImVec2(3.5f, 3.5f), text_color_disabled);
|
|
draw_list->AddLine( center + ImVec2(3.5f, -3.5f), center + ImVec2(-3.5f, 3.5f), text_color_disabled);
|
|
}
|
|
}
|
|
|
|
dock_tab = dock_tab->next_tab;
|
|
}
|
|
ImVec2 cp(dock.pos.x, tab_base + line_height);
|
|
draw_list->AddLine(cp, cp + ImVec2(dock.size.x, 0), color);
|
|
}
|
|
EndChild();
|
|
return tab_closed;
|
|
}
|
|
|
|
static void setDockPosSize(Dock& dest, Dock& dock, Slot_ dock_slot, Dock& container)
|
|
{
|
|
IM_ASSERT(!dock.prev_tab && !dock.next_tab && !dock.children[0] && !dock.children[1]);
|
|
|
|
dest.pos = container.pos;
|
|
dest.size = container.size;
|
|
dock.pos = container.pos;
|
|
dock.size = container.size;
|
|
|
|
switch (dock_slot)
|
|
{
|
|
case Slot_Bottom:
|
|
dest.size.y *= 0.5f;
|
|
dock.size.y *= 0.5f;
|
|
dock.pos.y += dest.size.y;
|
|
break;
|
|
case Slot_Right:
|
|
dest.size.x *= 0.5f;
|
|
dock.size.x *= 0.5f;
|
|
dock.pos.x += dest.size.x;
|
|
break;
|
|
case Slot_Left:
|
|
dest.size.x *= 0.5f;
|
|
dock.size.x *= 0.5f;
|
|
dest.pos.x += dock.size.x;
|
|
break;
|
|
case Slot_Top:
|
|
dest.size.y *= 0.5f;
|
|
dock.size.y *= 0.5f;
|
|
dest.pos.y += dock.size.y;
|
|
break;
|
|
default: IM_ASSERT(false); break;
|
|
}
|
|
dest.setPosSize(dest.pos, dest.size);
|
|
|
|
if (container.children[1]->pos.x < container.children[0]->pos.x ||
|
|
container.children[1]->pos.y < container.children[0]->pos.y)
|
|
{
|
|
Dock* tmp = container.children[0];
|
|
container.children[0] = container.children[1];
|
|
container.children[1] = tmp;
|
|
}
|
|
}
|
|
|
|
void doDock(Dock& dock, Dock* dest, Slot_ dock_slot)
|
|
{
|
|
IM_ASSERT(!dock.parent);
|
|
if (!dest)
|
|
{
|
|
dock.status = Status_Docked;
|
|
dock.setPosSize(ImVec2(0, 0), GetIO().DisplaySize);
|
|
}
|
|
else if (dock_slot == Slot_Tab)
|
|
{
|
|
Dock* tmp = dest;
|
|
while (tmp->next_tab)
|
|
{
|
|
tmp = tmp->next_tab;
|
|
}
|
|
|
|
tmp->next_tab = &dock;
|
|
dock.prev_tab = tmp;
|
|
dock.size = tmp->size;
|
|
dock.pos = tmp->pos;
|
|
dock.parent = dest->parent;
|
|
dock.status = Status_Docked;
|
|
}
|
|
else if (dock_slot == Slot_None)
|
|
{
|
|
dock.status = Status_Float;
|
|
}
|
|
else
|
|
{
|
|
Dock* container = (Dock*)MemAlloc(sizeof(Dock));
|
|
IM_PLACEMENT_NEW(container) Dock();
|
|
m_docks.push_back(container);
|
|
container->children[0] = &dest->getFirstTab();
|
|
container->children[1] = &dock;
|
|
container->next_tab = NULL;
|
|
container->prev_tab = NULL;
|
|
container->parent = dest->parent;
|
|
container->size = dest->size;
|
|
container->pos = dest->pos;
|
|
container->status = Status_Docked;
|
|
container->label = ImStrdup("");
|
|
|
|
if (!dest->parent)
|
|
{
|
|
}
|
|
else if (&dest->getFirstTab() == dest->parent->children[0])
|
|
{
|
|
dest->parent->children[0] = container;
|
|
}
|
|
else
|
|
{
|
|
dest->parent->children[1] = container;
|
|
}
|
|
|
|
dest->setParent(container);
|
|
dock.parent = container;
|
|
dock.status = Status_Docked;
|
|
|
|
setDockPosSize(*dest, dock, dock_slot, *container);
|
|
}
|
|
dock.setActive();
|
|
}
|
|
|
|
void rootDock(const ImVec2& pos, const ImVec2& size)
|
|
{
|
|
Dock* root = getRootDock();
|
|
if (!root) return;
|
|
|
|
ImVec2 min_size = root->getMinSize();
|
|
ImVec2 requested_size = size;
|
|
root->setPosSize(pos, ImMax(min_size, requested_size));
|
|
}
|
|
|
|
void setDockActive()
|
|
{
|
|
IM_ASSERT(m_current);
|
|
if (m_current) m_current->setActive();
|
|
}
|
|
|
|
static Slot_ getSlotFromLocationCode(char code)
|
|
{
|
|
switch (code)
|
|
{
|
|
case '1': return Slot_Left;
|
|
case '2': return Slot_Top;
|
|
case '3': return Slot_Bottom;
|
|
default: return Slot_Right;
|
|
}
|
|
}
|
|
|
|
static char getLocationCode(Dock* dock)
|
|
{
|
|
if (!dock) return '0';
|
|
|
|
if (dock->parent->isHorizontal())
|
|
{
|
|
if (dock->pos.x < dock->parent->children[0]->pos.x) return '1';
|
|
if (dock->pos.x < dock->parent->children[1]->pos.x) return '1';
|
|
return '0';
|
|
}
|
|
else
|
|
{
|
|
if (dock->pos.y < dock->parent->children[0]->pos.y) return '2';
|
|
if (dock->pos.y < dock->parent->children[1]->pos.y) return '2';
|
|
return '3';
|
|
}
|
|
}
|
|
|
|
void tryDockToStoredLocation(Dock& dock)
|
|
{
|
|
if (dock.status == Status_Docked) return;
|
|
if (dock.location[0] == 0) return;
|
|
|
|
Dock* tmp = getRootDock();
|
|
if (!tmp) return;
|
|
|
|
Dock* prev = NULL;
|
|
char* c = dock.location + strlen(dock.location) - 1;
|
|
while (c >= dock.location && tmp)
|
|
{
|
|
prev = tmp;
|
|
tmp = *c == getLocationCode(tmp->children[0]) ? tmp->children[0] : tmp->children[1];
|
|
if(tmp) --c;
|
|
}
|
|
if (tmp && tmp->children[0]) tmp = tmp->parent;
|
|
doDock(dock, tmp ? tmp : prev, tmp && !tmp->children[0] ? Slot_Tab : getSlotFromLocationCode(*c));
|
|
}
|
|
|
|
bool begin(const char* label, bool* opened, ImGuiWindowFlags extra_flags)
|
|
{
|
|
Dock& dock = getDock(label, !opened || *opened);
|
|
if (!dock.opened && (!opened || *opened)) tryDockToStoredLocation(dock);
|
|
dock.last_frame = ImGui::GetFrameCount();
|
|
if (strcmp(dock.label, label) != 0)
|
|
{
|
|
MemFree(dock.label);
|
|
dock.label = ImStrdup(label);
|
|
}
|
|
|
|
m_end_action = EndAction_None;
|
|
|
|
if (dock.first && opened) *opened = dock.opened;
|
|
dock.first = false;
|
|
if (opened && !*opened)
|
|
{
|
|
if (dock.status != Status_Float)
|
|
{
|
|
fillLocation(dock);
|
|
doUndock(dock);
|
|
dock.status = Status_Float;
|
|
}
|
|
dock.opened = false;
|
|
return false;
|
|
}
|
|
dock.opened = true;
|
|
|
|
m_end_action = EndAction_Panel;
|
|
beginPanel();
|
|
|
|
m_current = &dock;
|
|
if (dock.status == Status_Dragged) handleDrag(dock);
|
|
|
|
bool is_float = dock.status == Status_Float;
|
|
|
|
if (is_float)
|
|
{
|
|
SetNextWindowPos(dock.pos);
|
|
SetNextWindowSize(dock.size);
|
|
bool ret = Begin(label,
|
|
opened,
|
|
ImGuiWindowFlags_NoCollapse | extra_flags);
|
|
m_end_action = EndAction_End;
|
|
dock.pos = GetWindowPos();
|
|
dock.size = GetWindowSize();
|
|
|
|
ImGuiContext& g = *GImGui;
|
|
|
|
if (g.ActiveId == GetCurrentWindow()->MoveId && g.IO.MouseDown[0])
|
|
{
|
|
m_drag_offset = GetMousePos() - dock.pos;
|
|
doUndock(dock);
|
|
dock.status = Status_Dragged;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
if (!dock.active && dock.status != Status_Dragged) return false;
|
|
|
|
m_end_action = EndAction_EndChild;
|
|
|
|
PushStyleColor(ImGuiCol_Border, ImVec4(0, 0, 0, 0));
|
|
PushStyleColor(ImGuiCol_BorderShadow, ImVec4(0, 0, 0, 0));
|
|
float tabbar_height = GetTextLineHeightWithSpacing();
|
|
if (tabbar(dock.getFirstTab(), opened != NULL))
|
|
{
|
|
fillLocation(dock);
|
|
*opened = false;
|
|
}
|
|
ImVec2 pos = dock.pos;
|
|
ImVec2 size = dock.size;
|
|
pos.y += tabbar_height + GetStyle().WindowPadding.y;
|
|
size.y -= tabbar_height + GetStyle().WindowPadding.y;
|
|
|
|
SetCursorScreenPos(pos);
|
|
ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize |
|
|
ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoCollapse |
|
|
ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_NoBringToFrontOnFocus |
|
|
extra_flags;
|
|
char tmp[256];
|
|
strcpy(tmp, label);
|
|
strcat(tmp, "_docked"); // to avoid https://github.com/ocornut/imgui/issues/713
|
|
bool ret = BeginChild(tmp, size, true, flags);
|
|
PopStyleColor();
|
|
PopStyleColor();
|
|
return ret;
|
|
}
|
|
|
|
void end()
|
|
{
|
|
if (m_end_action == EndAction_End)
|
|
{
|
|
End();
|
|
}
|
|
else if (m_end_action == EndAction_EndChild)
|
|
{
|
|
PushStyleColor(ImGuiCol_Border, ImVec4(0, 0, 0, 0));
|
|
PushStyleColor(ImGuiCol_BorderShadow, ImVec4(0, 0, 0, 0));
|
|
EndChild();
|
|
PopStyleColor();
|
|
PopStyleColor();
|
|
}
|
|
m_current = NULL;
|
|
if (m_end_action > EndAction_None) endPanel();
|
|
}
|
|
|
|
int getDockIndex(Dock* dock)
|
|
{
|
|
if (!dock) return -1;
|
|
|
|
for (int i = 0; i < m_docks.size(); ++i)
|
|
{
|
|
if (dock == m_docks[i]) return i;
|
|
}
|
|
|
|
IM_ASSERT(false);
|
|
return -1;
|
|
}
|
|
|
|
Dock* getDockByIndex(int idx)
|
|
{
|
|
return idx < 0 ? NULL : m_docks[(int)idx];
|
|
}
|
|
};
|
|
|
|
static DockContext* s_dock = NULL;
|
|
|
|
IMGUI_API void InitDockContext()
|
|
{
|
|
void* ptr = ImGui::MemAlloc(sizeof(DockContext) );
|
|
s_dock = new(ptr) DockContext;
|
|
}
|
|
|
|
IMGUI_API void ShutdownDockContext()
|
|
{
|
|
s_dock->~DockContext();
|
|
ImGui::MemFree(s_dock);
|
|
s_dock = NULL;
|
|
}
|
|
|
|
IMGUI_API void RootDock(const ImVec2& pos, const ImVec2& size)
|
|
{
|
|
s_dock->rootDock(pos, size);
|
|
}
|
|
|
|
IMGUI_API bool BeginDock(const char* label, bool* opened, ImGuiWindowFlags extra_flags)
|
|
{
|
|
return s_dock->begin(label, opened, extra_flags);
|
|
}
|
|
|
|
IMGUI_API void EndDock()
|
|
{
|
|
s_dock->end();
|
|
}
|
|
|
|
IMGUI_API void SetDockActive()
|
|
{
|
|
s_dock->setDockActive();
|
|
}
|
|
|
|
} // namespace ImGui
|