Made some nice changes to the map editor widget

Center the map edit widget
Map edit zooming in should happen around the cursor
Disallow editing outside the mapedit widget
Add some scroll space around the mapedit widget

1 files changed, 72 insertions, 23 deletions

@@ -1,9 +1,14 @@
 #include "widget.h"
 #include "frame.h"
 
-IMPLEMENT_DYNAMIC_CLASS(MapeditWidget,wxScrolledWindow)
+const int EDITOR_SPACING_X = MAP_WIDTH * TILE_WIDTH / 2;
+const int EDITOR_SPACING_Y = MAP_HEIGHT * TILE_HEIGHT / 2;
+const int EDITOR_WIDTH = MAP_WIDTH * TILE_WIDTH + EDITOR_SPACING_X * 2;
+const int EDITOR_HEIGHT = MAP_HEIGHT * TILE_HEIGHT + EDITOR_SPACING_Y * 2;
 
-BEGIN_EVENT_TABLE(MapeditWidget, wxScrolledWindow)
+IMPLEMENT_DYNAMIC_CLASS(MapeditWidget,wxScrolledCanvas)
+
+BEGIN_EVENT_TABLE(MapeditWidget, wxScrolledCanvas)
         EVT_PAINT(MapeditWidget::OnPaint)
   EVT_LEFT_DOWN(MapeditWidget::OnClick)
   EVT_RIGHT_DOWN(MapeditWidget::OnRightClick)
@@ -18,7 +23,7 @@ MapeditWidget::MapeditWidget()
 }
 
 MapeditWidget::MapeditWidget(wxWindow* parent, wxWindowID winid, Map* map, TileWidget* tileWidget, const wxPoint& pos, const wxSize& size)
-  : wxScrolledWindow(parent, winid, pos, size), map(map), tileWidget(tileWidget)
+  : wxScrolledCanvas(parent, winid, pos, size), map(map), tileWidget(tileWidget)
 {
   Init();
 }
@@ -30,12 +35,21 @@ void MapeditWidget::Init()
   this->FitInside();
   this->SetScrollRate(5, 5);
   
+  SetVirtualSize(EDITOR_WIDTH, EDITOR_HEIGHT);
+  
+  int cW, cH;
+  GetClientSize(&cW, &cH);
+  mousePos.x = cW / 2;
+  mousePos.y = cH / 2;
+  
+//  Scroll(GAME_WIDTH*1.5-mousePos.x, GAME_HEIGHT*1.5-mousePos.y);
+  
   SetZoomSize(2);
 }
 
 wxSize MapeditWidget::DoGetBestSize() const
 {
-  return {GAME_WIDTH*2, GAME_HEIGHT*2};
+  return {EDITOR_WIDTH*scale, EDITOR_HEIGHT*scale};
 }
 
 void MapeditWidget::OnPaint(wxPaintEvent&)
@@ -43,12 +57,18 @@ void MapeditWidget::OnPaint(wxPaintEvent&)
   wxPaintDC dc(this);
   wxMemoryDC tiles_dc;
   tiles_dc.SelectObject(tiles);
-  int vX, vY;
+  
+  int vX, vY, vXX, vXY, vW, vH, cW, cH;
   GetViewStart(&vX, &vY);
-  int vXX, vYX;
-  GetScrollPixelsPerUnit(&vXX, &vYX);
+  GetVirtualSize(&vW, &vH);
+  GetClientSize(&cW, &cH);
+  GetScrollPixelsPerUnit(&vXX, &vXY);
   vX *= vXX;
-  vY *= vYX;
+  vY *= vXY;
+  
+  dc.SetPen(*wxGREY_PEN);
+  dc.SetBrush(*wxGREY_BRUSH);
+  dc.DrawRectangle(0, 0, cW, cH);
 
   for (int y=0; y<MAP_HEIGHT; y++)
   {
@@ -60,7 +80,9 @@ void MapeditWidget::OnPaint(wxPaintEvent&)
         tile = tileWidget->getSelected();
       }
       
-      dc.StretchBlit(x*TILE_WIDTH*scale-vX, y*TILE_HEIGHT*scale-vY, TILE_WIDTH*scale, TILE_HEIGHT*scale, &tiles_dc, tile%8*TILE_WIDTH, tile/8*TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT);
+      wxPoint pos {(x*TILE_WIDTH + EDITOR_SPACING_X)*scale - vX, (y*TILE_HEIGHT + EDITOR_SPACING_Y) * scale - vY};
+      
+      dc.StretchBlit(pos.x, pos.y, TILE_WIDTH*scale, TILE_HEIGHT*scale, &tiles_dc, tile%8*TILE_WIDTH, tile/8*TILE_HEIGHT, TILE_WIDTH, TILE_HEIGHT);
     }
   }
   
@@ -71,7 +93,7 @@ void MapeditWidget::OnPaint(wxPaintEvent&)
     wxBitmap sprite = object->object->getSprite();
     tiles_dc.SelectObject(sprite);
     
-    wxPoint pos {(int) object->position.first*scale-vX, (int) object->position.second*scale-vY};
+    wxPoint pos {(object->position.first + EDITOR_SPACING_X)*scale-vX, (object->position.second + EDITOR_SPACING_Y)*scale-vY};
     wxSize size {object->object->getWidth()*scale, object->object->getHeight()*scale};
     dc.StretchBlit(pos.x, pos.y, size.GetWidth(), size.GetHeight(), &tiles_dc, 0, 0, object->object->getWidth(), object->object->getHeight());
     
@@ -99,9 +121,9 @@ void MapeditWidget::OnPaint(wxPaintEvent&)
     tiles_dc.SelectObject(wxNullBitmap);
     tiles_dc.SelectObject(sprite);
     
-    std::pair<double, double> startPos = map->getWorld()->getStartingPosition();
+    std::pair<int, int> startPos = map->getWorld()->getStartingPosition();
     
-    wxPoint pos {(int) startPos.first*scale-vX, (int) startPos.second*scale-vY};
+    wxPoint pos {(startPos.first + EDITOR_SPACING_X)*scale-vX, (startPos.second + EDITOR_SPACING_Y)*scale-vY};
     wxSize size {PLAYER_WIDTH[currentPlayer]*scale, PLAYER_HEIGHT[currentPlayer]*scale};
     
     dc.StretchBlit(pos.x, pos.y, size.GetWidth(), size.GetHeight(), &tiles_dc, 0, 0, PLAYER_WIDTH[currentPlayer], PLAYER_HEIGHT[currentPlayer]);
@@ -127,10 +149,10 @@ void MapeditWidget::OnPaint(wxPaintEvent&)
     } else if (editMode == EditTiles)
     {
       int tile = tileWidget->getSelected();
-      int x = (mousePos.x + vX) / (TILE_WIDTH * scale);
-      int y = (mousePos.y + vY) / (TILE_HEIGHT * scale);
+      int x = (mousePos.x + vX - EDITOR_SPACING_X*scale) / (TILE_WIDTH * scale);
+      int y = (mousePos.y + vY - EDITOR_SPACING_Y*scale) / (TILE_HEIGHT * scale);
     
-      wxPoint pos {x*TILE_WIDTH*scale-vX, y*TILE_HEIGHT*scale-vY};
+      wxPoint pos {(x*TILE_WIDTH + EDITOR_SPACING_X)*scale-vX, (y*TILE_HEIGHT + EDITOR_SPACING_Y)*scale-vY};
       wxSize size {TILE_WIDTH*scale, TILE_HEIGHT*scale};
   
       tiles_dc.SelectObject(wxNullBitmap);
@@ -184,8 +206,8 @@ void MapeditWidget::SetTile(wxPoint pos)
   vX *= vXX;
   vY *= vYX;
 
-  int x = (pos.x + vX) / (TILE_WIDTH * scale);
-  int y = (pos.y + vY) / (TILE_HEIGHT * scale);
+  int x = (pos.x + vX - EDITOR_SPACING_X*scale) / (TILE_WIDTH * scale);
+  int y = (pos.y + vY - EDITOR_SPACING_Y*scale) / (TILE_HEIGHT * scale);
   
   changeBuffer.insert({x,y});
   
@@ -194,6 +216,8 @@ void MapeditWidget::SetTile(wxPoint pos)
 
 void MapeditWidget::OnClick(wxMouseEvent& event)
 {
+  if (!mouseIsIn) return;
+  
   mouseIsDown = true;
   
   int vX, vY;
@@ -338,14 +362,29 @@ void MapeditWidget::OnRightClick(wxMouseEvent& event)
 void MapeditWidget::OnMouseMove(wxMouseEvent& event)
 {
   mousePos = event.GetPosition();
-  mouseIsIn = true;
   
-  if (editMode == EditTiles)
+  int vX, vY, vW, vH;
+  GetViewStart(&vX, &vY);
+  GetVirtualSize(&vW, &vH);
+  int vXX, vYX;
+  GetScrollPixelsPerUnit(&vXX, &vYX);
+  vX *= vXX;
+  vY *= vYX;
+  
+  if ((mousePos.x+vX >= EDITOR_SPACING_X*scale) && (mousePos.x+vX < (EDITOR_WIDTH-EDITOR_SPACING_X)*scale)
+    && (mousePos.y+vY >= EDITOR_SPACING_Y*scale) && (mousePos.y+vY < (EDITOR_HEIGHT-EDITOR_SPACING_Y)*scale))
   {
-    if (mouseIsDown)
+    mouseIsIn = true;
+  
+    if (editMode == EditTiles)
     {
-      SetTile(event.GetPosition());
+      if (mouseIsDown)
+      {
+        SetTile(event.GetPosition());
+      }
     }
+  } else {
+    mouseIsIn = false;
   }
   
   Refresh();
@@ -406,9 +445,19 @@ void MapeditWidget::ZoomOut()
 
 void MapeditWidget::SetZoomSize(int zoom)
 {
-  scale = zoom;
+  int vX, vY, vXX, vXY;
+  GetViewStart(&vX, &vY);
+  GetScrollPixelsPerUnit(&vXX, &vXY);
+  vX *= vXX;
+  vY *= vXY;
   
-  SetVirtualSize(MAP_WIDTH*TILE_WIDTH*scale, MAP_HEIGHT*TILE_HEIGHT*scale);
+  int newViewStartX = (vX + mousePos.x) / scale * zoom - mousePos.x;
+  int newViewStartY = (vY + mousePos.y) / scale * zoom - mousePos.y;
+
+  SetVirtualSize(EDITOR_WIDTH * zoom, EDITOR_HEIGHT * zoom);
+  Scroll(newViewStartX / vXX, newViewStartY / vXY);
+  
+  scale = zoom;
   
   Refresh();
 }