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src/game_tab/editor/EditorCanvas.cpp

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+#include "EditorCanvas.hpp"
+
+EditorCanvas::EditorCanvas(wxFrame *parent)
+    : wxPanel(parent), NeedRedraw(false) {
+  hide_icon = LoadPNG("hide", wxSize(CGEditor::status.MoveIconWidth,
+                                     CGEditor::status.MoveIconWidth));
+  t.ResizePieces(CGEditor::status.MoveIconWidth);
+}
+
+void EditorCanvas::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.UseMoveIcons =
+      true; // 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 Convenient fonction to center text
+ *
+ * @param e Element to center
+ * @return wxPoint The centered version of e according to wdWidget API
+ */
+wxPoint EditorCanvas::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));
+}
+
+void EditorCanvas::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(*wxGREY_BRUSH);
+    } else if (e.prop & cgeditor::Property::Margin) {
+      dc->SetBrush(*wxLIGHT_GREY_BRUSH);
+    } else if (e.prop & cgeditor::Property::Button) {
+      if (e.prop & cgeditor::Property::On) {
+        dc->DrawBitmap(hide_icon, e.x, e.y);
+        return;
+      }
+      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
+      std::uint32_t y = Middle(e).y - CGEditor::status.MoveIconWidth / 2;
+      char p = 'P';
+      if (e.prop & cgeditor::Property::Knight) {
+        p = 'N';
+      } else if (e.prop & cgeditor::Property::Bishop) {
+        p = 'B';
+      } else if (e.prop & cgeditor::Property::Queen) {
+        p = 'Q';
+      } else if (e.prop & cgeditor::Property::King) {
+        p = 'K';
+      }
+      if (e.prop & cgeditor::Property::Black) {
+        p = std::tolower(p);
+      }
+      if (e.prop & cgeditor::Property::Current) {
+        wxRect recToDraw(e.x, e.y, e.width, e.height);
+        dc->SetBrush(*wxLIGHT_GREY_BRUSH);
+        dc->DrawRectangle(recToDraw);
+      }
+      dc->DrawBitmap(*t.Get(p), e.x, y);
+    } 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.UseMoveIcons) {
+          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));
+      }
+    }
+  }
+}
+void EditorCanvas::HandleEvent(const cgeditor::Event &e) {
+  wxLogDebug("Editor event!");
+  if (e.type == cgeditor::Event::Goto) {
+    wxCommandEvent event(GOTO_MOVE_EVENT, GetId());
+    event.SetEventObject(this);
+    event.SetClientData(e.move);
+    ProcessEvent(event);
+  } else if (e.type == cgeditor::Event::Delete) {
+    wxCommandEvent event(DELETE_MOVE_EVENT, GetId());
+    event.SetEventObject(this);
+    event.SetClientData(e.move);
+    ProcessEvent(event);
+  } else if (e.type == cgeditor::Event::Promote) {
+    wxCommandEvent event(PROMOTE_MOVE_EVENT, GetId());
+    event.SetEventObject(this);
+    event.SetClientData(e.move);
+    ProcessEvent(event);
+  } else if (e.type == cgeditor::Event::SetAsMainline) {
+    wxCommandEvent event(SET_AS_MAINLINE_EVENT, GetId());
+    event.SetEventObject(this);
+    event.SetClientData(e.move);
+    ProcessEvent(event);
+  }
+}
+
+void EditorCanvas::MouseEvent(wxMouseEvent &event) {
+  if (event.Dragging()) {
+    CGEditor::status.LeftClick = false;
+    CGEditor::status.IsDrag = true;
+    Refresh();
+  } else if (event.LeftDown()) {
+    SetFocus();
+    CGEditor::status.LeftClick = true;
+    Refresh();
+  } else if (event.RightDown()) {
+    SetFocus();
+    CGEditor::status.RightClick = true;
+    Refresh();
+  } else if (event.GetWheelRotation() != 0) {
+    SetFocus();
+    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;
+  }
+}
+
+void EditorCanvas::SetMoves(HalfMove *moves, HalfMove *current) {
+  CGEditor::status.Moves = moves;
+  CGEditor::status.CurrentMove = current;
+
+  Refresh();
+}
+
+void EditorCanvas::OnKeyEvent(wxKeyEvent &event) {
+  if (event.GetKeyCode() == WXK_LEFT) {
+    wxCommandEvent previousEvent(PREVIOUS_MOVE_EVENT, GetId());
+    previousEvent.SetEventObject(this);
+    ProcessEvent(previousEvent);
+  } else if (event.GetKeyCode() == WXK_RIGHT) {
+    wxCommandEvent nextEvent(NEXT_MOVE_EVENT, GetId());
+    nextEvent.SetEventObject(this);
+    ProcessEvent(nextEvent);
+  }
+}
+
+wxBEGIN_EVENT_TABLE(EditorCanvas, wxPanel) EVT_PAINT(EditorCanvas::OnPaint)
+    EVT_MOUSE_EVENTS(EditorCanvas::MouseEvent)
+        EVT_CHAR_HOOK(EditorCanvas::OnKeyEvent) wxEND_EVENT_TABLE()

src/game_tab/editor/EditorCanvas.hpp

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+#pragma once
+
+#include "../HalfMove.hpp"
+#include "CGEditor.hpp"
+#include "ochess.hpp"
+#include "../board/Theme.hpp"
+
+// Foreign events
+wxDECLARE_EVENT(GOTO_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(PREVIOUS_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(NEXT_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(DELETE_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(PROMOTE_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(SET_AS_MAINLINE_EVENT, wxCommandEvent);
+
+class EditorCanvas : public wxPanel, public cgeditor::CGEditor {
+  wxPaintDC *dc;
+  bool NeedRedraw;
+  wxPoint Middle(cgeditor::Element e);
+  wxBitmap hide_icon;
+  Theme t;
+
+public:
+  EditorCanvas(wxFrame *parent);
+  void OnPaint(wxPaintEvent &event);
+  void MouseEvent(wxMouseEvent &event);
+  void DrawElement(const cgeditor::Element &e);
+  void HandleEvent(const cgeditor::Event &e);
+  void SetMoves(HalfMove *moves, HalfMove *current);
+  void OnKeyEvent(wxKeyEvent &event);
+
+  DECLARE_EVENT_TABLE()
+};

src/game_tab/editor/EditorPanel.cpp

@@ -0,0 +1,207 @@
+#include "EditorPanel.hpp"
+
+wxDEFINE_EVENT(GOTO_MOVE_EVENT, wxCommandEvent);
+wxDEFINE_EVENT(DELETE_MOVE_EVENT, wxCommandEvent);
+wxDEFINE_EVENT(PROMOTE_MOVE_EVENT, wxCommandEvent);
+wxDEFINE_EVENT(SET_AS_MAINLINE_EVENT, wxCommandEvent);
+wxDEFINE_EVENT(PREVIOUS_MOVE_EVENT, wxCommandEvent);
+wxDEFINE_EVENT(NEXT_MOVE_EVENT, wxCommandEvent);
+
+EditorPanel::EditorPanel(wxFrame *parent, Game *game)
+    : wxPanel(parent), game(game), selected_item(-1) {
+
+  // ----- Init -----
+  wxBoxSizer *sizer = new wxBoxSizer(wxVERTICAL);
+  wxNotebook *notebook = new wxNotebook(this, wxID_ANY);
+
+  //----- CGEditor Page -----
+  wxPanel *cgeditor_panel = new wxPanel(notebook, wxID_ANY);
+  wxBoxSizer *cgeditor_panel_sizer = new wxBoxSizer(wxVERTICAL);
+  editor_canvas = new EditorCanvas((wxFrame *)cgeditor_panel);
+  cgeditor_panel_sizer->Add(editor_canvas, 1, wxEXPAND);
+  // Comment box
+  wxStaticBox *commentBox =
+      new wxStaticBox(cgeditor_panel, wxID_ANY, "Move Comment");
+  wxBoxSizer *commentBoxSizer = new wxBoxSizer(wxVERTICAL);
+  comment_input = new wxTextCtrl(
+      commentBox, COMMENT_INPUT_BOX, wxEmptyString, // Use right ID
+      wxDefaultPosition, wxSize(0, 150), wxTE_MULTILINE);
+  commentBoxSizer->Add(comment_input, 0, wxEXPAND);
+  commentBox->SetSizer(commentBoxSizer);
+  cgeditor_panel_sizer->Add(commentBox, 0, wxEXPAND);
+  cgeditor_panel->SetSizer(cgeditor_panel_sizer);
+
+  //----- Tags Page -----
+  wxPanel *tag_panel = new wxPanel(notebook, wxID_ANY);
+  wxBoxSizer *tag_panel_sizer = new wxBoxSizer(wxVERTICAL);
+  wxPanel *tag_edit_panel = new wxPanel(tag_panel, wxID_ANY);
+  wxBoxSizer *tag_edit_panel_sizer = new wxBoxSizer(wxVERTICAL);
+  tagTextCtrl = new wxTextCtrl(tag_edit_panel, wxID_ANY);
+  tagTextCtrl->SetHint(wxString("Name"));
+  tag_edit_panel_sizer->Add(tagTextCtrl, 1, wxEXPAND);
+  valueTextCtrl = new wxTextCtrl(tag_edit_panel, wxID_ANY);
+  valueTextCtrl->SetHint(wxString("Value"));
+  tag_edit_panel_sizer->Add(valueTextCtrl, 1, wxEXPAND);
+  tag_edit_panel_sizer->Add(new wxButton(tag_edit_panel, UPDATE_BTN, L"Update"),
+                            1, wxEXPAND);
+  tag_edit_panel->SetSizer(tag_edit_panel_sizer);
+  tag_panel_sizer->Add(tag_edit_panel, 0, wxEXPAND);
+  tags_list = new wxListCtrl(tag_panel, wxID_ANY, wxDefaultPosition,
+                             wxDefaultSize, wxLC_REPORT);
+  tags_list->InsertColumn(0, L"Name");
+  tags_list->InsertColumn(1, L"Value", wxLIST_FORMAT_LEFT, 500);
+  RefreshTagsList();
+  tag_panel_sizer->Add(tags_list, 1, wxEXPAND);
+  delete_button = new wxButton(tag_panel, DELETE_BTN, L"Delete");
+  delete_button->Enable(false);
+  tag_panel_sizer->Add(delete_button, 0, wxEXPAND);
+  tag_panel->SetSizer(tag_panel_sizer);
+
+  //----- Notebook -----
+  notebook->AddPage(cgeditor_panel, L"Editor");
+  notebook->AddPage(tag_panel, L"Tags");
+  sizer->Add(notebook, 1, wxEXPAND);
+
+  //----- Sizer -----
+  this->SetSizer(sizer);
+
+  // Bind events
+  this->Bind(wxEVT_TEXT, &EditorPanel::OnCommentChange, this,
+             COMMENT_INPUT_BOX);
+  this->Bind(GOTO_MOVE_EVENT, &EditorPanel::OnGotoMove, this, wxID_ANY);
+  this->Bind(DELETE_MOVE_EVENT, &EditorPanel::OnMoveDelete, this, wxID_ANY);
+  this->Bind(PROMOTE_MOVE_EVENT, &EditorPanel::OnMovePromote, this, wxID_ANY);
+  this->Bind(SET_AS_MAINLINE_EVENT, &EditorPanel::OnMoveSetAsMainline, this,
+             wxID_ANY);
+  this->Bind(NEXT_MOVE_EVENT, &EditorPanel::OnNextMove, this, wxID_ANY);
+  this->Bind(PREVIOUS_MOVE_EVENT, &EditorPanel::OnPreviousMove, this, wxID_ANY);
+  this->Bind(wxEVT_LIST_ITEM_SELECTED, &EditorPanel::OnTagSelected, this,
+             wxID_ANY);
+  this->Bind(wxEVT_LIST_ITEM_DESELECTED, &EditorPanel::OnTagDeselected, this,
+             wxID_ANY);
+  this->Bind(wxEVT_BUTTON, &EditorPanel::OnApply, this, UPDATE_BTN);
+  this->Bind(wxEVT_BUTTON, &EditorPanel::OnDelete, this, DELETE_BTN);
+}
+
+void EditorPanel::OnTagSelected(wxListEvent &event) {
+  wxListItem item = event.GetItem();
+  std::string key = item.GetText().ToStdString();
+  tagTextCtrl->ChangeValue(key);
+  item.SetColumn(1);
+  tags_list->GetItem(item);
+  valueTextCtrl->ChangeValue(item.GetText().ToStdString());
+  selected_item = item.GetId();
+  delete_button->Enable(true);
+}
+
+void EditorPanel::OnTagDeselected(wxListEvent &event) {
+  selected_item = -1;
+  delete_button->Enable(false);
+}
+
+void EditorPanel::NotifyBoard() {
+  wxCommandEvent previousEvent(GAME_CHANGE, GetId());
+  previousEvent.SetEventObject(this);
+  ProcessEvent(previousEvent);
+}
+
+void EditorPanel::OnCommentChange(wxCommandEvent &event) {
+  wxLogDebug("EditorPanel: comment input change");
+  HalfMove *m = game->GetCurrentMove();
+  if (m != NULL) {
+    m->SetComment(event.GetString().ToStdString());
+  }
+  editor_canvas->Refresh();
+}
+
+void EditorPanel::OnApply(wxCommandEvent &event) {
+  std::string key = tagTextCtrl->GetValue().ToStdString();
+  if (key == "FEN") {
+    SHOW_DIALOG_ERROR("Editing the FEN tag is forbidden");
+    return;
+  }
+  if (key.size() > 0) {
+    std::string value = valueTextCtrl->GetValue().ToStdString();
+    game->SetTag(key, value);
+    RefreshTagsList();
+    wxCommandEvent event(REFRESH_TAB_TITLE, GetId());
+    event.SetEventObject(this);
+    ProcessEvent(event);
+  }
+}
+
+void EditorPanel::OnDelete(wxCommandEvent &event) {
+  if (selected_item >= 0) {
+    wxListItem item;
+    item.SetColumn(0);
+    item.SetId(selected_item);
+    tags_list->GetItem(item);
+    std::string key = item.GetText().ToStdString();
+    if (key != "FEN") {
+      game->DeleteTag(key);
+      selected_item = -1;
+      RefreshTagsList();
+    } else {
+      SHOW_DIALOG_ERROR("Deleting the FEN tag is forbidden.");
+    }
+  }
+}
+
+void EditorPanel::OnGotoMove(wxCommandEvent &event) {
+  wxLogDebug("EditorPanel: received GOTO_MOVE_EVENT");
+  game->SetCurrent((HalfMove *)event.GetClientData());
+  NotifyBoard();
+  editor_canvas->Refresh();
+}
+
+void EditorPanel::OnMoveDelete(wxCommandEvent &event) {
+  game->DeleteMove((HalfMove *)event.GetClientData());
+  NotifyBoard();
+  editor_canvas->Refresh();
+}
+
+void EditorPanel::OnMovePromote(wxCommandEvent &event) {
+  wxLogDebug("EditorPanel: promote move called");
+  game->PromoteMove((HalfMove *)event.GetClientData());
+  NotifyBoard();
+  editor_canvas->Refresh();
+}
+
+void EditorPanel::OnMoveSetAsMainline(wxCommandEvent &event) {
+  wxLogDebug("EditorPanel: set move as mainline called");
+  game->SetMoveAsMainline((HalfMove *)event.GetClientData());
+  NotifyBoard();
+  editor_canvas->Refresh();
+}
+
+void EditorPanel::Notify() {
+  HalfMove *m = game->GetCurrentMove();
+  if (m != NULL) {
+    comment_input->ChangeValue(
+        m->GetComment()); // ChangeValue do not raise events
+  }
+  editor_canvas->SetMoves(game->GetMoves(), m);
+}
+
+void EditorPanel::RefreshTagsList() {
+  tags_list->DeleteAllItems();
+  for (std::string s : game->ListTags()) {
+    long index = tags_list->InsertItem(0, s);
+    tags_list->SetItem(index, 1, game->GetTag(s));
+    if (s == "FEN") {
+      tags_list->SetItemBackgroundColour(index, wxColour(200, 200, 200));
+    }
+  }
+}
+
+void EditorPanel::OnPreviousMove(wxCommandEvent &event) {
+  game->Previous();
+  Notify();
+  NotifyBoard();
+}
+
+void EditorPanel::OnNextMove(wxCommandEvent &event) {
+  game->Next();
+  Notify();
+  NotifyBoard();
+}

src/game_tab/editor/EditorPanel.hpp

@@ -0,0 +1,44 @@
+#include "../Game.hpp"
+#include "EditorCanvas.hpp"
+#include "ochess.hpp"
+#include <wx/listctrl.h>
+#include <wx/notebook.h>
+
+// Local events
+wxDECLARE_EVENT(GOTO_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(DELETE_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(PROMOTE_MOVE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(SET_AS_MAINLINE_EVENT, wxCommandEvent);
+wxDECLARE_EVENT(REFRESH_TAB_TITLE, wxCommandEvent);
+
+// Foreign events
+wxDECLARE_EVENT(GAME_CHANGE, wxCommandEvent);
+
+enum { COMMENT_INPUT_BOX = wxID_HIGHEST + 100, UPDATE_BTN, DELETE_BTN };
+
+class EditorPanel : public wxPanel {
+  Game *game;
+  EditorCanvas *editor_canvas;
+  wxTextCtrl *comment_input;
+  wxListCtrl *tags_list;
+  wxTextCtrl *tagTextCtrl, *valueTextCtrl;
+  wxButton *delete_button;
+  long selected_item;
+
+public:
+  EditorPanel(wxFrame *parent, Game *game);
+  void NotifyBoard();
+  void Notify();
+  void OnCommentChange(wxCommandEvent &event);
+  void OnGotoMove(wxCommandEvent &event);
+  void OnMoveDelete(wxCommandEvent &event);
+  void OnMovePromote(wxCommandEvent &event);
+  void OnMoveSetAsMainline(wxCommandEvent &event);
+  void RefreshTagsList();
+  void OnTagSelected(wxListEvent &event);
+  void OnTagDeselected(wxListEvent &event);
+  void OnApply(wxCommandEvent &event);
+  void OnDelete(wxCommandEvent &event);
+  void OnPreviousMove(wxCommandEvent &event);
+  void OnNextMove(wxCommandEvent &event);
+};