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build

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cmake_minimum_required(VERSION 3.22)
project(cgeditor)
# Includes
set(CGEDITOR_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/includes) # For conveniance
set(CGEDITOR_INCLUDE_DIR ${CGEDITOR_INCLUDE_DIR} PARENT_SCOPE) # To be used by other projects with add_subdirectory()
file(MAKE_DIRECTORY ${CGEDITOR_INCLUDE_DIR})
# Copy all includes
file(GLOB_RECURSE HEADER_FILES src/*.hpp)
file(MAKE_DIRECTORY ${CGEDITOR_INCLUDE_DIR}/components)
foreach(FILE ${HEADER_FILES})
file(RELATIVE_PATH FILE_SUBDIR ${CMAKE_CURRENT_SOURCE_DIR}/src ${FILE})
configure_file(${FILE} ${CGEDITOR_INCLUDE_DIR}/${FILE_SUBDIR} COPYONLY)
endforeach(FILE ${HEADER_FILES})
# Compile cgeditor
include_directories(src)
file(GLOB_RECURSE SRC_CPP_FILES src/*.cpp)
add_library(cgeditor SHARED ${SRC_CPP_FILES})
# Examples
set(COMPILE_EXAMPLES FALSE CACHE BOOL "Compiling included examples")
if(COMPILE_EXAMPLES)
add_subdirectory("examples/wxWidgets/")
endif()

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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

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# cgeditor: Chess Game Editor
cgeditor is a dependency-free chess game editor written in C++. It can be used with any library that provides 2D canvas drawing and mouse inputs features.
# Features
- Show move,move number, variations, comments etc.
- *Delete*, *Promote* and *Set as main line* features
- Handle pieces icons
- Its graphical appareance is entirely customizable
# Architecture
To run cgeditor you need to extend 2 classes:
- CGEditor (To draw and handle events)
- CGEHalfMove (The data structure displayed by the editor)
# Example
An example based on *wxWidgets* is available in the `examples/` folder:
![wxWidgets](examples/wxWidgets/demo.gif)

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find_package(wxWidgets COMPONENTS core base REQUIRED)
include(${wxWidgets_USE_FILE})
add_executable(wxwidgets_example main.cpp MyHalfMove.cpp)
target_link_libraries(wxwidgets_example cgeditor ${wxWidgets_LIBRARIES})

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#include "MyHalfMove.hpp"
MyHalfMove::MyHalfMove(std::string move) { this->move = move; }
MyHalfMove::~MyHalfMove() {}
void MyHalfMove::AddVariation(MyHalfMove *m) {
m->IsBlack = this->IsBlack;
m->Number = this->Number;
MyHalfMove::variations.push_back(m);
cgeditor::CGEHalfMove::variations.push_back(m);
m->SetParent(this);
}
void MyHalfMove::SetMainline(MyHalfMove *m) {
if (!this->IsBlack) {
m->IsBlack = true;
m->Number = this->Number;
} else {
m->IsBlack = false;
m->Number = this->Number + 1;
}
MyHalfMove::mainline = m;
cgeditor::CGEHalfMove::MainLine = m;
if (m != NULL) {
m->SetParent(this);
}
}
void MyHalfMove::SetParent(MyHalfMove *m) {
MyHalfMove::parent = m;
CGEHalfMove::Parent = m;
}
void MyHalfMove::RemoveChild(MyHalfMove *m) {
std::uint32_t i = 0;
bool found = false;
for (i; i < MyHalfMove::variations.size(); i++) {
if (MyHalfMove::variations[i] == m) {
found = true;
break;
}
}
if (found) {
MyHalfMove::variations.erase(MyHalfMove::variations.begin() + i);
}
if (MyHalfMove::MainLine == m) {
MyHalfMove::MainLine = NULL;
}
cgeditor::CGEHalfMove::RemoveChild((CGEHalfMove *)m);
}
MyHalfMove *MyHalfMove::GetParent() { return (parent); }
MyHalfMove *MyHalfMove::GetRoot() {
MyHalfMove *m = this;
MyHalfMove *p = MyHalfMove::parent;
while (p != NULL) {
if (p->mainline != m) {
return (m);
}
m = p;
p = m->MyHalfMove::parent;
}
return (m);
}
void MyHalfMove::SetAsMainline() {
MyHalfMove *root = GetRoot();
MyHalfMove *lastRoot;
do {
lastRoot = root;
root->MyHalfMove::Promote();
root = GetRoot();
} while (root != lastRoot);
// std::cout << IsVariation() << std::endl << std::flush;
}
void MyHalfMove::Promote() {
if (MyHalfMove::parent != NULL) {
MyHalfMove *p = MyHalfMove::parent;
if (p->MyHalfMove::mainline != this) {
if (MyHalfMove::parent->MyHalfMove::parent != NULL) {
MyHalfMove *pp = MyHalfMove::parent->MyHalfMove::parent;
if (pp->MyHalfMove::mainline == p) {
pp->MyHalfMove::SetMainline(this);
} else {
pp->AddVariation(this);
pp->MyHalfMove::RemoveChild(p);
}
}
if (p->MyHalfMove::mainline == this) {
p->MyHalfMove::SetMainline(NULL);
} else {
p->MyHalfMove::RemoveChild(this);
}
this->AddVariation(p);
}
}
}
bool MyHalfMove::IsVariation() {
MyHalfMove *m = this;
MyHalfMove *p = MyHalfMove::parent;
while (p != NULL) {
if (p->mainline != m) {
return (true);
}
m = p;
p = m->MyHalfMove::parent;
}
return (false);
}
MyHalfMove *BuildExampleGame() {
MyHalfMove *m = new MyHalfMove("e4");
MyHalfMove *toDisplay = m;
MyHalfMove *m2 = new MyHalfMove("e5");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nf3");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nc6");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Bc4");
m->SetMainline(m2);
m->SetComment("Italian Opening");
m = m2;
m2 = new MyHalfMove("Bc5");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("c3");
m2->SetComment("Giuoco Pianissimo");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nf6");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("o-o");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("d6");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nd2");
m->SetMainline(m2);
m = m2;
{
MyHalfMove *var = new MyHalfMove("Re1");
var->SetComment("Also possible");
m->AddVariation(var);
MyHalfMove *var2 = new MyHalfMove("a6");
var->SetMainline(var2);
var = var2;
{
MyHalfMove *subvar = new MyHalfMove("Bg4");
var->AddVariation(subvar);
MyHalfMove *subvar2 = new MyHalfMove("Bb3");
subvar->SetMainline(subvar2);
subvar = subvar2;
}
var2 = new MyHalfMove("Bb3");
var->SetMainline(var2);
var = var2;
var2 = new MyHalfMove("Ba7");
var->SetMainline(var2);
var = var2;
}
m2 = new MyHalfMove("a6");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Bb3");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Ba7");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Re1");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("o-o");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nf1");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("h6");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Ng3");
m->SetMainline(m2);
m = m2;
m2 = new MyHalfMove("Nd7");
m->SetMainline(m2);
m = m2;
return (toDisplay);
}

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#include "CGEditor.hpp"
#include <vector>
/**
* @brief Create your custom half move class
*
* The implementation of the class should give you
* an overview of how to keep your move sync with the one of CGEditor
*
*/
class MyHalfMove : public cgeditor::CGEHalfMove {
MyHalfMove *parent = NULL;
MyHalfMove *mainline = NULL;
std::vector<MyHalfMove *> variations;
public:
MyHalfMove(std::string move);
~MyHalfMove();
/// @brief Add variation to current move
void AddVariation(MyHalfMove *m);
/// @brief Remove the specified child from mainline and/or variations
void RemoveChild(MyHalfMove *m);
/// @brief Set value of the mailine
void SetMainline(MyHalfMove *m);
/// @brief Set this move as mainline
void SetAsMainline();
/// @brief Promote the current move and submove
void Promote();
/// @brief Check if current half move is within a variation
bool IsVariation();
/// @brief Get the root of a variation
MyHalfMove* GetRoot();
/// @brief Get parent of the current move
MyHalfMove* GetParent();
/// @brief Set parent of the current move
void SetParent(MyHalfMove *m);
};
/// @brief Build the example game to use in the editor
MyHalfMove *BuildExampleGame();

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#include <wx/wxprec.h>
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
#include "CGEditor.hpp"
#include "MyHalfMove.hpp"
/**
* @brief CGEditor Window
*
*/
class MyFrame : public wxFrame, public cgeditor::CGEditor {
wxPaintDC *dc;
bool NeedRedraw = false;
public:
MyFrame()
: wxFrame(NULL, wxID_ANY, "Hello World CGEditor"), CGEditor(), dc(NULL) {
CreateStatusBar();
SetStatusText("CGEditor");
// Create a game
CGEditor::status.Moves = BuildExampleGame();
}
private:
void OnExit(wxCommandEvent &event) { Close(true); }
void OnPaint(wxPaintEvent &event) {
wxPaintDC current_dc(this);
dc = &current_dc;
// Refresh canvas size
wxSize sz = GetClientSize();
CGEditor::status.CanvasWidth = sz.GetWidth();
CGEditor::status.CanvasHeight = sz.GetHeight();
CGEditor::status.UseMoveImages =
false; // Piece image should be drawn before the move ?
const wxPoint pt = wxGetMousePosition();
CGEditor::status.MouseX = pt.x - this->GetScreenPosition().x;
CGEditor::status.MouseY = pt.y - this->GetScreenPosition().y;
CGEditor::Draw();
}
/**
* @brief We refresh CGEditor status according to events
*
* @param event
*/
void MouseEvent(wxMouseEvent &event) {
if (event.Dragging()) {
CGEditor::status.LeftClick = false;
CGEditor::status.IsDrag = true;
Refresh();
} else if (event.LeftDown()) {
CGEditor::status.LeftClick = true;
Refresh();
} else if (event.RightDown()) {
CGEditor::status.RightClick = true;
Refresh();
} else if (event.GetWheelRotation() != 0) {
if (event.GetWheelRotation() < 0) {
CGEditor::status.EventVScroll = 50;
} else {
CGEditor::status.EventVScroll = -50;
}
Refresh();
}
// Should another draw of CGEditor be made?
if (NeedRedraw) {
Refresh();
NeedRedraw = false;
}
}
/**
* @brief Convenient fonction to center text
*
* @param e Element to center
* @return wxPoint The centered version of e according to wdWidget API
*/
wxPoint Middle(cgeditor::Element e) {
wxSize sz = dc->GetTextExtent(e.text);
return (wxPoint(e.x + (e.width - sz.GetWidth()) / 2,
e.y + (e.height - sz.GetHeight()) / 2));
}
/**
* @brief CGEditor is going to call this method with the elements to draw on
* the canvas
*
* @param e Element to draw
*/
void DrawElement(const cgeditor::Element &e) {
dc->SetPen(wxNullPen);
dc->SetBrush(*wxRED_BRUSH);
if (e.prop & cgeditor::Property::Rectangle) {
if (e.prop & cgeditor::Property::Scrollbarbg) {
dc->SetBrush(*wxCYAN_BRUSH);
} else if (e.prop & cgeditor::Property::Scrollbar) {
dc->SetBrush(*wxBLUE_BRUSH);
} else if (e.prop & cgeditor::Property::Margin) {
dc->SetBrush(*wxLIGHT_GREY_BRUSH);
} else if (e.prop & cgeditor::Property::Button) {
dc->SetBrush(*wxBLACK_BRUSH);
}
wxRect recToDraw(e.x, e.y, e.width, e.height);
dc->DrawRectangle(recToDraw);
} else if (e.prop & cgeditor::Property::Text ||
e.prop & cgeditor::Property::Image) {
if (e.prop & cgeditor::Property::Image) {
// Draw your pieces images instead
dc->SetBrush(*wxRED_BRUSH);
wxRect recToDraw(e.x, e.y, e.width, e.height);
dc->DrawRectangle(recToDraw);
dc->DrawText(wxString(e.text), Middle(e));
} else if (e.prop & cgeditor::Property::Comment) {
wxRect recToDraw(e.x, e.y, e.width, e.height);
dc->SetBrush(*wxYELLOW_BRUSH);
dc->DrawRectangle(recToDraw);
dc->DrawText(wxString(e.text), wxPoint(e.x, e.y));
} else if (e.prop & cgeditor::Property::Menuitem) {
wxRect recToDraw(e.x, e.y, e.width, e.height);
dc->SetBrush(*wxLIGHT_GREY_BRUSH);
dc->DrawRectangle(recToDraw);
dc->DrawText(wxString(e.text), wxPoint(e.x, Middle(e).y));
} else {
if (e.prop & cgeditor::Property::Move) {
if (e.prop & cgeditor::Property::Current) {
wxRect recToDraw(e.x, e.y, e.width, e.height);
dc->SetBrush(*wxLIGHT_GREY_BRUSH);
dc->DrawRectangle(recToDraw);
}
if (CGEditor::status.UseMoveImages) {
dc->DrawText(wxString(e.text), wxPoint(e.x, Middle(e).y));
} else {
dc->DrawText(wxString(e.text), Middle(e));
}
} else {
dc->DrawText(wxString(e.text), Middle(e));
}
}
}
}
/**
* @brief CGEditor events that occurs during last draw
*
* @param e event to handle
*/
void HandleEvent(const cgeditor::Event &e) {
std::string str;
if (e.type == cgeditor::Event::Type::CommentSelected)
str = "Comment Selected";
else if (e.type == cgeditor::Event::Type::Promote) {
str = "Promote";
static_cast<MyHalfMove *>(e.move)->MyHalfMove::Promote();
NeedRedraw = true;
} else if (e.type == cgeditor::Event::Type::Delete) {
str = "Delete";
if (e.move->Parent != NULL) {
static_cast<MyHalfMove *>(e.move)->GetParent()->MyHalfMove::RemoveChild(
(MyHalfMove *)e.move);
} else {
CGEditor::status.Moves = NULL;
}
NeedRedraw = true;
} else if (e.type == cgeditor::Event::Type::SetAsMainline) {
str = "Set as main line";
static_cast<MyHalfMove *>(e.move)->MyHalfMove::SetAsMainline();
NeedRedraw = true;
} else if (e.type == cgeditor::Event::Type::Goto) {
str = "Goto move";
}
std::cout << "Event received: " << str << std::endl << std::flush;
}
// wxWidgets specific
DECLARE_EVENT_TABLE()
};
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_PAINT(MyFrame::OnPaint)
EVT_MOUSE_EVENTS(MyFrame::MouseEvent)
wxEND_EVENT_TABLE()
class MyApp : public wxApp {
public:
virtual bool OnInit() {
MyFrame *frame = new MyFrame();
frame->Show(true);
return true;
}
};
wxIMPLEMENT_APP(MyApp);

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#include "CGEHalfMove.hpp"
namespace cgeditor {
CGEHalfMove::CGEHalfMove()
: MainLine(NULL), IsBlack(false), Number(1), Parent(NULL) {}
CGEHalfMove::CGEHalfMove(CGEHalfMove *parent) {
CGEHalfMove();
Parent = parent;
Parent->MainLine = this;
if (parent->IsBlack) {
Number = parent->Number + 1;
IsBlack = false;
} else {
Number = parent->Number;
IsBlack = true;
}
}
CGEHalfMove::CGEHalfMove(std::string move)
: MainLine(NULL), IsBlack(false), Number(0), Parent(NULL) {
this->move = move;
}
void CGEHalfMove::SetComment(const std::string &c) {
if (c.size() > 0) {
NbLineComment = 1;
for (const char &c : c) {
if (c == '\n') {
NbLineComment++;
}
}
this->comment = c;
}
}
std::string CGEHalfMove::GetComment() { return (comment); }
std::uint16_t CGEHalfMove::GetNbLineComment() { return (this->NbLineComment); }
void CGEHalfMove::RemoveChild(CGEHalfMove *m) {
std::uint32_t i = 0;
bool found = false;
for (i; i < variations.size(); i++) {
if (variations[i] == m) {
found = true;
break;
}
}
if (found) {
variations.erase(variations.begin() + i);
}
if (MainLine == m) {
MainLine = NULL;
}
}
} // namespace cgeditor

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#pragma once
#include <string>
#include <vector>
namespace cgeditor {
/**
* @brief Move (mainlines and variations) displayed in the editor
*
*/
class CGEHalfMove {
/// @brief Comment linked to the move
std::string comment;
/// @brief Number of line in @a comment
std::uint16_t NbLineComment = 0;
public:
CGEHalfMove();
CGEHalfMove(CGEHalfMove *parent);
CGEHalfMove(std::string move);
/// @brief CUrrent move number
std::uint16_t Number;
/// @brief Current move value
std::string move;
CGEHalfMove *MainLine;
CGEHalfMove *Parent;
bool IsBlack;
/// @brief Says if variations of that move must be drawn
bool Folded = false;
/// @brief Says if this move must be drawn
bool Hide = false;
/// @brief Variations of the move
std::vector<CGEHalfMove *> variations;
/// @brief Set comment and update number of lines
void SetComment(const std::string &c);
/// @brief Get current value of comment
std::string GetComment();
/// @brief Get number of lines in comment
std::uint16_t GetNbLineComment();
/// @brief Remove a move from the MainLine and/or variations
void RemoveChild(CGEHalfMove *m);
};
} // namespace cgeditor

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#include "CGEditor.hpp"
namespace cgeditor {
CGEditor::CGEditor() {
SBV = new Scrollbar(&status, false);
SBH = new Scrollbar(&status, true);
MT = new MoveTable(&status);
MA = new Margin(&status);
ME = new Menu(&status);
}
CGEditor::~CGEditor() {
delete SBV;
delete SBH;
delete MT;
delete MA;
delete ME;
}
void CGEditor::Draw() {
bool ShoudUpdateMouse = false;
if (status.LeftClick || status.RightClick) {
ShoudUpdateMouse = true;
}
// Should be refreshed before Scrollbar!
// To update status.MoveTableMaxX and status.MoveTableMaxY
MA->Refresh();
MT->Refresh();
MA->DrawMargin(MT->GetVariationsMarging());
SBV->Refresh();
SBH->Refresh();
ME->Refresh();
// Order matter
DrawComponent(MA);
DrawComponent(MT);
DrawComponent(SBV);
DrawComponent(SBH);
DrawComponent(ME);
// Handle events
for (Event &e : status.Events) {
HandleEvent(e);
}
status.Events.clear();
// Update mouse events
status.LeftClick = false;
status.RightClick = false;
status.IsDrag = false;
if (ShoudUpdateMouse) {
status.LastMouseClicX = status.MouseX;
status.LastMouseClicY = status.MouseY;
}
}
void CGEditor::CallDrawElement(Element e) {
// For element that want to expands up to the edge
if (e.width < 0) {
if (e.ShouldApplyScroll) {
e.width =
status.CanvasWidth - status.ScrollbarWidth - (e.x + status.ScrollX);
} else {
e.width = status.CanvasWidth - status.ScrollbarWidth - e.x;
}
if (e.width < 0) {
e.width *= -1;
}
}
// Apply scroll
if (e.ShouldApplyScroll) {
e.x += status.ScrollX;
if (!e.IgnoreScrollY) {
e.y += status.ScrollY;
}
}
// Check if element is visible
if (((e.x) >= 0 && ((e.x) <= status.CanvasWidth) && (e.y) >= 0 &&
((e.y) <= status.CanvasHeight)) ||
((e.x + e.width) >= 0 && ((e.x + e.width) <= status.CanvasWidth) &&
(e.y + e.height) >= 0 && ((e.y + e.height) <= status.CanvasHeight))) {
if (e.IsOver(status.MouseX, status.MouseY)) {
e.prop |= Property::Mouseover;
}
DrawElement(e);
}
}
void CGEditor::DrawComponent(Component *c) {
for (Element &e : c->GetElements()) {
CallDrawElement(e);
}
}
} // namespace cgeditor

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#pragma once
#include "Types.hpp"
#include "components/Margin.hpp"
#include "components/Menu.hpp"
#include "components/MoveTable.hpp"
#include "components/Scrollbar.hpp"
#include <string>
namespace cgeditor {
class CGEditor {
/// @brief Prepare element for drawing and draw
void CallDrawElement(Element);
/// @brief Draw all elements of a component
void DrawComponent(Component *);
Scrollbar *SBV, *SBH;
MoveTable *MT;
Margin *MA;
Menu *ME;
protected:
Status status;
///@brief Draw the Chess Game Editor on the canvas using current status
void Draw();
/// @brief Draw an element on the canvas
virtual void DrawElement(const Element &) = 0;
/// @brief Handle event that occured during editor drawing
virtual void HandleEvent(const Event &) = 0;
public:
CGEditor();
~CGEditor();
};
} // namespace cgeditor

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#include "Types.hpp"
namespace cgeditor {
bool Element::IsOver(const double &X, const double &Y) const {
if (width < 0) {
return (x >= x && Y >= y && Y <= (y + height));
}
return ((X >= x && X <= (x + width) && Y >= y && Y <= (y + height)));
}
Property operator|(Property lhs, Property rhs) {
return static_cast<Property>(
static_cast<std::underlying_type_t<Property>>(lhs) |
static_cast<std::underlying_type_t<Property>>(rhs));
}
bool operator&(Property lhs, Property rhs) {
return (static_cast<std::underlying_type_t<Property>>(lhs) &
static_cast<std::underlying_type_t<Property>>(rhs));
}
Property &operator|=(Property &lhs, Property rhs) {
return lhs = static_cast<Property>(
static_cast<std::underlying_type_t<Property>>(lhs) |
static_cast<std::underlying_type_t<Property>>(rhs));
}
} // namespace cgeditor

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#pragma once
#include "CGEHalfMove.hpp"
#include <string>
namespace cgeditor {
enum class Property : std::uint32_t {
None = 0,
Image = 1,
Rectangle = 1 << 1,
Text = 1 << 2,
On = 1 << 3,
Move = 1 << 4,
Margin = 1 << 5,
Menuitem = 1 << 6, // Is it a menu item
Comment = 1 << 7,
Black = 1 << 8, // Is it a move for black
Scrollbar = 1 << 9,
Horizontal = 1 << 10, // Is it an horizontal scrollbar
Scrollbarbg = 1 << 11, // Is it the background of the scrollbar
Button = 1 << 12, // Is it a button
Dots = 1 << 13, // Move dots
Movenumber = 1 << 14,
Current = 1 << 15,
Mouseover = 1 << 16 // Set on every element where mouse is over
};
Property operator|(Property lhs, Property rhs);
Property &operator|=(Property &lhs, Property rhs);
bool operator&(Property lhs, Property rhs);
class Element {
public:
Property prop = Property::None;
std::string text;
double x, y;
double width, height;
/// @brief Should element be scrolled
bool ShouldApplyScroll = false;
/// @brief For margin bar to avoid scrolling it vertically
bool IgnoreScrollY = false;
/// @brief Check if a given point is over the element
bool IsOver(const double &X, const double &Y) const;
};
typedef struct Event {
enum Type { CommentSelected, Promote, Delete, SetAsMainline, Goto, None };
Type type = None;
/// @brief Move related to the event
CGEHalfMove *move = NULL;
} Event;
/**
* @brief Chess Game Editor status
* Various parameters that can be tuned by the user.
* The user should manually set mouse event boolean
* for the editor to work properly
*/
typedef struct Status {
double MouseX = 0, MouseY = 0;
double LastMouseClicX = 0, LastMouseClicY = 0;
double CanvasWidth, CanvasHeight;
double MenuItemWidth = 150, MenuItemHeight = 50;
double MoveWidth = 100, MoveHeight = 50;
double MarginBarWidth = 50;
double ScrollbarWidth = 30;
double MenuX, MenuY;
double MoveX, MoveY;
std::uint16_t CommentLinePerRow = 2;
/// @brief Ask the editor to scroll for a specific amout of pixels
double EventVScroll = 0, EventHScroll = 0;
/// @brief Amount of pixel to scroll elements
double ScrollX = 0, ScrollY = 0;
/// @brief Set according to mouse events
bool LeftClick, RightClick;
/// @brief Can be use to close the menu
bool IsMenuOpen = false;
bool UseMoveImages = false;
double MoveTableMaxX = 0, MoveTableMaxY = 0;
/// @brief User should set it to true when mouse is dragging
bool IsDrag = false;
CGEHalfMove *Moves = NULL;
CGEHalfMove *CurrentMove = NULL;
CGEHalfMove *SelectedMove = NULL;
std::vector<Event> Events;
} Status;
} // namespace cgeditor

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#pragma once
#include "Types.hpp"
#include <vector>
namespace cgeditor {
class Component {
protected:
Status *status;
std::vector<Element> elements;
public:
Component(Status *s) : status(s){};
std::vector<Element> GetElements() { return (this->elements); }
virtual void Refresh() = 0;
};
} // namespace cgeditor

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#include "Margin.hpp"
namespace cgeditor {
Margin::Margin(Status *s) : Component(s) {}
void Margin::Refresh() {
elements.clear();
Element e;
e.x = 0;
e.y = 0;
e.height = status->CanvasHeight - status->ScrollbarWidth;
e.ShouldApplyScroll = true;
e.IgnoreScrollY = true;
DrawMargin(e);
}
void Margin::DrawMargin(Element e) {
e.prop=Property::Margin | Property::Rectangle;
e.width = status->MarginBarWidth;
elements.push_back(e);
}
void Margin::DrawMargin(std::vector<Element> elts) {
for(Element &e:elts){
DrawMargin(e);
}
}
} // namespace cgeditor

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#include "Component.hpp"
namespace cgeditor {
class Margin : public Component {
public:
Margin(Status *s);
void Refresh();
void DrawMargin(Element e);
void DrawMargin(std::vector<Element> elts);
};
} // namespace cgeditor

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#include "Menu.hpp"
namespace cgeditor {
Menu::Menu(Status *s) : Component(s), WasOpen(false) {
entries.push_back("Delete from here");
entries.push_back("Promote");
entries.push_back("Set as main line");
}
void Menu::Refresh() {
if (WasOpen && (status->LeftClick || status->RightClick)) {
char i = 0;
for (Element &e : elements) {
if (e.IsOver(status->MouseX, status->MouseY)) {
if (i == 0) {
status->Events.push_back({Event::Type::Delete,status->SelectedMove});
} else if (i == 1) {
status->Events.push_back({Event::Type::Promote,status->SelectedMove});
} else if (i == 2) {
status->Events.push_back({Event::Type::SetAsMainline,status->SelectedMove});
}
}
i++;
}
status->IsMenuOpen = false;
WasOpen = false;
elements.clear();
return;
}
elements.clear();
// Draw menu backward to avoid getting out of the canvas
bool backwardY =
(status->MouseY + status->MenuItemHeight * entries.size()) >=
status->CanvasHeight;
bool backwardX =
(status->MouseX + status->MenuItemWidth) >= status->CanvasWidth;
if (status->IsMenuOpen) {
char i = 0;
for (std::string &en : entries) {
Element e;
e.prop=Property::Text|Property::Menuitem;
e.text = en;
if (backwardX) {
e.x = (status->MouseX - status->MenuItemWidth);
} else {
e.x = status->MouseX;
}
if (backwardY) {
e.y = (status->MouseY - status->MenuItemHeight) -
i * status->MenuItemHeight;
} else {
e.y = status->MouseY + i * status->MenuItemHeight;
}
e.width = status->MenuItemWidth;
e.height = status->MenuItemHeight;
elements.push_back(e);
i++;
}
WasOpen = true;
}
}
} // namespace cgeditor

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#include "Component.hpp"
namespace cgeditor {
class Menu : public Component {
std::vector<std::string> entries;
/// @brief Set to true if the menu was open during the last editor draw
bool WasOpen;
public:
Menu(Status *s);
void Refresh();
};
} // namespace cgeditor

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#include "MoveTable.hpp"
namespace cgeditor {
MoveTable::MoveTable(Status *s) : Component(s) {
ImageWidth = status->MoveWidth * 0.25; // Image is 25% of the cell
}
void MoveTable::Refresh() {
status->MoveTableMaxX = 0;
status->MoveTableMaxY = 0;
elements.clear();
VariationMargins.clear();
CurrentMove = -1; // No current move by default
if (status->Moves != NULL) {
UpdateMoves(status->Moves, 0, 0, status->Moves->IsBlack);
// We only set the type after the call to UpdateMoves()
// This way only a single move will be the current move
if (CurrentMove >= 0) {
if (status->UseMoveImages) {
elements[CurrentMove].prop |= Property::Current;
elements[CurrentMove + 1].prop |= Property::Current;
} else {
elements[CurrentMove].prop |= Property::Current;
}
}
} else {
Element e;
e.prop = Property::Text;
e.text = "No move to show";
e.x = status->MarginBarWidth;
e.y = 0;
e.height = status->MoveHeight;
e.width = -1;
elements.push_back(e);
}
}
bool MoveTable::IsMouseOver(const Element &e) const {
// Check if we clicked on scroll bars
if (status->IsMenuOpen ||
status->MouseX >= (status->CanvasWidth - status->ScrollbarWidth) ||
status->MouseY >= (status->CanvasHeight - status->ScrollbarWidth)) {
return (false);
}
return (e.IsOver(status->MouseX - status->ScrollX,
status->MouseY - status->ScrollY));
}
std::uint32_t MoveTable::UpdateMoves(CGEHalfMove *m, std::uint32_t line,
std::uint32_t indent, bool only_black) {
//---------- Check black or white ----------
char indent_black = 0;
if (m->IsBlack) {
indent_black++;
}
//---------- Create temporary move surrounding area ----------
Element move_bound;
move_bound.prop = Property::Move;
if (m->IsBlack) {
move_bound.prop |= Property::Black;
}
move_bound.x = status->MarginBarWidth + status->MoveX +
status->MoveWidth * (indent + indent_black) +
((indent + 1) / 2 * status->MarginBarWidth);
move_bound.y = status->MoveHeight * line;
move_bound.width = status->MoveWidth;
move_bound.height = status->MoveHeight;
move_bound.text = m->move;
move_bound.ShouldApplyScroll = true;
bool isMouseOver = IsMouseOver(move_bound);
//---------- Update current focus move ----------
if (isMouseOver) {
if (status->LeftClick) {
if (!status->IsMenuOpen) {
status->Events.push_back({Event::Type::Goto, m});
status->CurrentMove = m;
}
} else if (status->RightClick) {
status->IsMenuOpen = true;
status->SelectedMove = m;
}
}
//---------- Check if current move is focused ----------
if (status->CurrentMove == m) {
CurrentMove = elements.size();
}
//---------- Draw move ----------
if (status->UseMoveImages) {
// Image
Element img;
img.prop = Property::Image | Property::Move;
img.x = move_bound.x;
img.y = status->MoveHeight * line;
img.width = ImageWidth;
img.height = status->MoveHeight;
img.ShouldApplyScroll = true;
elements.push_back(img);
// Move
Element e;
e.prop = move_bound.prop | Property::Text;
e.text = m->move;
e.x = ImageWidth + move_bound.x;
e.y = status->MoveHeight * line;
e.width = status->MoveWidth - ImageWidth;
e.height = status->MoveHeight;
e.ShouldApplyScroll = true;
elements.push_back(e);
} else {
move_bound.prop |= Property::Text;
elements.push_back(move_bound);
}
//---------- Move number in marge or for variation ----------
if (indent == 0 && (!m->IsBlack || only_black)) {
DRAW_NB(0, status->MoveHeight * line, m->Number);
} else if (indent > 0 && (!m->IsBlack || only_black)) {
if (only_black) {
DRAW_NB_VAR((move_bound.x - status->MoveWidth) - status->MarginBarWidth,
status->MoveHeight * line, m->Number);
} else {
DRAW_NB_VAR(move_bound.x - ((indent + 1) / 2 * status->MarginBarWidth),
status->MoveHeight * line, m->Number);
}
}
//---------- Draw dots ----------
if (only_black) {
DRAW_DOTS(move_bound.x - status->MoveWidth, move_bound.y);
}
//---------- Scrolling infos ----------
if ((move_bound.x + move_bound.width) > status->MoveTableMaxX) {
status->MoveTableMaxX = move_bound.x + move_bound.width;
}
if ((move_bound.y + move_bound.height) > status->MoveTableMaxY) {
status->MoveTableMaxY = move_bound.y + move_bound.height;
}
//---------- Comments ----------
if (m->GetNbLineComment() > 0) {
line = DrawComment(m, line, indent, move_bound, indent_black);
}
//---------- Variations ----------
if (m->variations.size() > 0) {
line = DrawVariations(m, line, indent, move_bound, indent_black);
}
//---------- Mainline ----------
if (m->MainLine != NULL) {
only_black = (m->MainLine->IsBlack &&
(m->GetNbLineComment() > 0 || m->variations.size()));
if (m->IsBlack) {
line = UpdateMoves(m->MainLine, line + 1, indent, only_black);
} else {
line = UpdateMoves(m->MainLine, line, indent, only_black);
}
}
return (line);
}
std::uint32_t MoveTable::DrawComment(CGEHalfMove *m, std::uint32_t line,
std::uint32_t indent,
const Element &move_bound,
const char &indent_black) {
// Show three dots
if (!m->IsBlack) {
DRAW_DOTS(status->MarginBarWidth + status->MoveX +
status->MoveWidth * (indent + 1) +
((indent + 1) / 2 * status->MarginBarWidth),
status->MoveHeight * line);
}
// Print comment
line++;
// Computer number of rows for the comment
std::uint16_t CommentRows = m->GetNbLineComment() / status->CommentLinePerRow;
if (m->GetNbLineComment() % status->CommentLinePerRow > 0) {
CommentRows++;
}
// Draw comment
Element e;
e.prop = Property::Text | Property::Comment;
e.x = move_bound.x -
(indent_black *
status->MoveWidth); // status->MarginBarWidth + status->MoveX;
e.y = status->MoveHeight * line;
e.width = -1; // Negative width means expands to the edge of the canvas
e.height = CommentRows * status->MoveHeight;
e.text = m->GetComment();
e.ShouldApplyScroll = true;
elements.push_back(e);
// Do not forget to add marging before comment
if (indent > 0) {
e.x -= status->MarginBarWidth;
VariationMargins.push_back(e);
}
if (status->LeftClick && IsMouseOver(e)) {
status->Events.push_back({Event::Type::CommentSelected, m});
}
line += CommentRows; // Skip right amount of lines
// Since we already increment line for black later on:
if (m->IsBlack || m->variations.size() > 0) {
line--;
}
return (line);
}
std::uint32_t MoveTable::DrawVariations(CGEHalfMove *m, std::uint32_t line,
std::uint32_t indent,
const Element &move_bound,
const char &indent_black) {
// Show three dots next to move if white turn
if ((m->variations.size() == 0) && !m->IsBlack) {
DRAW_DOTS(status->MarginBarWidth + status->MoveX +
status->MoveWidth * (indent + 1),
status->MoveHeight * line);
}
// Show button on the right side of the move
{
Element e;
e.prop = Property::Rectangle | Property::Button;
e.x = move_bound.x + status->MoveWidth;
if (!m->IsBlack)
e.x += status->MoveWidth;
e.y = move_bound.y + std::ceil(status->MoveHeight / 4);
e.width = std::ceil(status->MoveHeight / 2);
e.height = e.width;
e.ShouldApplyScroll = true;
if (status->LeftClick && IsMouseOver(e)) {
m->Folded = !m->Folded;
}
if (!m->Folded) {
e.prop |= Property::On;
}
elements.push_back(e);
}
if (!m->Folded) {
for (CGEHalfMove *v : m->variations) {
// For each variation show show/hide button
{
Element e;
e.prop = Property::Rectangle | Property::Button;
e.x = (status->MarginBarWidth + status->MoveX +
status->MoveWidth * indent) +
status->MoveWidth - std::ceil(status->MoveHeight / 2) -
std::ceil(status->MoveHeight / 4);
e.y = (status->MoveHeight * (line + 1)) +
std::ceil(status->MoveHeight / 4);
e.width = std::ceil(status->MoveHeight / 2);
e.height = e.width;
e.ShouldApplyScroll = true;
if (status->LeftClick && IsMouseOver(e)) {
v->Hide = !v->Hide;
}
if (!v->Hide) {
e.prop |= Property::On;
}
elements.push_back(e);
}
if (!v->Hide) {
line = UpdateMoves(v, line + 1, indent + 1, v->IsBlack);
} else {
line++;
}
}
}
// New line after variation
if (m->MainLine != NULL && m->MainLine->IsBlack) {
line++;
}
return (line);
}
} // namespace cgeditor

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#include "Component.hpp"
#include <cmath>
#define IS_VISIBLE(e) \
(((e.x + status->ScrollX) >= 0 && \
((e.x + status->ScrollX) <= status->CanvasWidth) && \
(e.y + status->ScrollY) >= 0 && \
((e.y + status->ScrollY) <= status->CanvasHeight)) || \
((e.x + e.width + status->ScrollX) >= 0 && \
((e.x + e.width + status->ScrollX) <= status->CanvasWidth) && \
(e.y + e.height + status->ScrollY) >= 0 && \
((e.y + e.height + status->ScrollY) <= status->CanvasHeight)))
#define DRAW_DOTS(XX, YY) \
{ \
Element e; \
e.prop = Property::Text | Property::Dots; \
e.x = (XX); \
e.y = (YY); \
e.width = status->MoveWidth; \
e.height = status->MoveHeight; \
e.text = "..."; \
e.ShouldApplyScroll = true; \
elements.push_back(e); \
}
#define DRAW_NB_(XX, YY, NB) \
Element ln; \
ln.prop = Property::Text | Property::Movenumber; \
ln.text = std::to_string(NB); \
ln.x = (XX); \
ln.y = (YY); \
ln.width = status->MarginBarWidth; \
ln.height = status->MoveHeight; \
ln.ShouldApplyScroll = true; \
elements.push_back(ln);
#define DRAW_NB(XX, YY, NB) \
{ DRAW_NB_(XX, YY, NB); }
#define DRAW_NB_VAR(XX, YY, NB) \
{ \
DRAW_NB_(XX, YY, NB); \
VariationMargins.push_back(ln); \
}
namespace cgeditor {
class MoveTable : public Component {
std::uint32_t UpdateMoves(CGEHalfMove *, std::uint32_t, std::uint32_t,bool only_black);
std::int32_t CurrentMove;
double ImageWidth;
std::vector<Element> VariationMargins;
bool IsMouseOver(const Element &e) const;
std::uint32_t DrawComment(CGEHalfMove *m, std::uint32_t line, std::uint32_t indent,
const Element &move_bound, const char &indent_black);
std::uint32_t DrawVariations(CGEHalfMove *m, std::uint32_t line, std::uint32_t indent,
const Element &move_bound,
const char &indent_black);
public:
MoveTable(Status *s);
void Refresh();
std::vector<Element> GetVariationsMarging() { return (VariationMargins); }
};
} // namespace cgeditor

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#include "Scrollbar.hpp"
namespace cgeditor {
Scrollbar::Scrollbar(Status *s, bool IsHorizontal) : Component(s) {
this->IsHorizontal = IsHorizontal;
bg.prop = Property::Rectangle | Property::Scrollbarbg;
bar.prop = Property::Rectangle | Property::Scrollbar;
if (IsHorizontal) {
bg.prop |= Property::Horizontal;
bar.x = 0;
} else {
bar.y = 0;
}
DragX = 0;
DragY = 0;
Trigger = false;
}
void Scrollbar::Refresh() {
if (IsHorizontal) {
bg.y = status->CanvasHeight - status->ScrollbarWidth;
bg.width = status->CanvasWidth - status->ScrollbarWidth;
bg.height = status->ScrollbarWidth;
bar.y = bg.y;
} else {
bg.x = status->CanvasWidth - status->ScrollbarWidth;
bg.width = status->CanvasWidth;
bg.height = status->CanvasHeight - status->ScrollbarWidth;
bar.x = bg.x;
}
bar.width = bg.width;
bar.height = bg.height;
// Compute move table canvas
double MTCanvasHeight = status->CanvasHeight - status->ScrollbarWidth;
double MTCanvasWidth = status->CanvasWidth - status->ScrollbarWidth;
bool shouldScroll = false;
if (!IsHorizontal && status->MoveTableMaxY > MTCanvasHeight) {
bar.height =
std::ceil(bg.height * (MTCanvasHeight / status->MoveTableMaxY));
shouldScroll = true;
}
if (IsHorizontal && status->MoveTableMaxX > MTCanvasWidth) {
bar.width = std::ceil(bg.width * (MTCanvasWidth / status->MoveTableMaxX));
shouldScroll = true;
}
if (shouldScroll) {
if (IsHorizontal && status->EventHScroll != 0) {
double percent = status->EventHScroll / status->MoveTableMaxX;
double maxScroll = bg.width - bar.width;
bar.x += maxScroll * percent;
bar.x = std::max(bg.x, bar.x);
bar.x = std::min(bg.x + maxScroll, bar.x);
double curScroll = bar.x - bg.x;
double scrollPercent = curScroll / maxScroll;
status->ScrollX =
-(status->MoveTableMaxX - MTCanvasWidth) * scrollPercent;
status->EventHScroll = 0;
} else if (status->EventVScroll != 0) {
double percent = status->EventVScroll / status->MoveTableMaxY;
double maxScroll = bg.height - bar.height;
bar.y += maxScroll * percent;
bar.y = std::max(bg.y, bar.y);
bar.y = std::min(bg.y + maxScroll, bar.y);
double curScroll = bar.y - bg.y;
double scrollPercent = curScroll / maxScroll;
status->ScrollY =
-(status->MoveTableMaxY - MTCanvasHeight) * scrollPercent;
status->EventVScroll = 0;
} else if (status->LeftClick &&
bar.IsOver(status->MouseX, status->MouseY)) {
DragX = bar.x;
DragY = bar.y;
Trigger = true;
} else if (Trigger && status->IsDrag) {
if (IsHorizontal) {
bar.x = DragX + (status->MouseX - status->LastMouseClicX);
bar.x = std::max(bg.x, bar.x);
double maxScroll = bg.width - bar.width;
bar.x = std::min(bg.x + maxScroll, bar.x);
double curScroll = bar.x - bg.x;
double scrollPercent = curScroll / maxScroll;
status->ScrollX =
-(status->MoveTableMaxX - MTCanvasWidth) * scrollPercent;
} else {
bar.y = DragY + (status->MouseY - status->LastMouseClicY);
bar.y = std::max(bg.y, bar.y);
double maxScroll = bg.height - bar.height;
bar.y = std::min(bg.y + maxScroll, bar.y);
double curScroll = bar.y - bg.y;
double scrollPercent = curScroll / maxScroll;
status->ScrollY =
-(status->MoveTableMaxY - MTCanvasHeight) * scrollPercent;
}
} else {
Trigger = false;
}
}
elements.clear();
elements.push_back(bg);
elements.push_back(bar);
}
} // namespace cgeditor

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#include "Component.hpp"
#include <algorithm> // std::max
#include <cmath>
namespace cgeditor {
class Scrollbar : public Component {
/// @brief Set to true if it is the horizontal scrollbar
bool IsHorizontal;
Element bg,bar;
double DragY,DragX;
bool Trigger;
public:
Scrollbar(Status* s,bool IsHorizontal);
void Refresh();
};
} // namespace cgeditor