MasscollabsGamingStudios/gnome-chess
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chess: Show the selected piece as larger instead of using colours

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This commit is contained in:
Robert Ancell 2011-01-25 23:43:56 +10:00
parent 608bb74c50
commit 9d19bf78b9
1 changed files with 49 additions and 43 deletions
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92
src/chess-view-2d.vala
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@ -2,7 +2,9 @@ private class ChessView2D : ChessView
{
private int border = 6;
private int square_size;
private int selected_square_size;
private Cairo.ImageSurface? model_surface;
private Cairo.ImageSurface? selected_model_surface;
private string loaded_theme_name = "";
private double border_size
@ -20,11 +22,15 @@ private class ChessView2D : ChessView
int short_edge = int.min (get_allocated_width (), get_allocated_height ());
square_size = (int) Math.floor ((short_edge - 2 * border) / 9.0);
var extra = square_size * 0.1;
if (extra < 3)
extra = 3;
selected_square_size = square_size + 2 * (int) (extra + 0.5);
return true;
}
private void render_piece (Cairo.Context c, string name, int offset)
private void render_piece (Cairo.Context c1, Cairo.Context c2, string name, int offset)
{
Rsvg.Handle handle;
try
@ -36,11 +42,18 @@ private class ChessView2D : ChessView
stderr.printf ("Failed to load piece svg: %s", e.message);
return;
}
c.save ();
c.translate (square_size * offset, 0);
c.scale ((double) square_size / handle.width, (double) square_size / handle.height);
handle.render_cairo (c);
c.restore ();
c1.save ();
c1.translate (square_size * offset, 0);
c1.scale ((double) square_size / handle.width, (double) square_size / handle.height);
handle.render_cairo (c1);
c1.restore ();
c2.save ();
c2.translate (selected_square_size * offset, 0);
c2.scale ((double) selected_square_size / handle.width, (double) selected_square_size / handle.height);
handle.render_cairo (c2);
c2.restore ();
}
private void load_theme ()
@ -49,21 +62,24 @@ private class ChessView2D : ChessView
if (options.theme_name == loaded_theme_name && model_surface != null && square_size == model_surface.get_height ())
return;
model_surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, 12 * (int) square_size, square_size);
model_surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, 12 * square_size, square_size);
selected_model_surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, 12 * selected_square_size, selected_square_size);
var c1 = new Cairo.Context (model_surface);
var c2 = new Cairo.Context (selected_model_surface);
render_piece (c1, c2, "whitePawn", 0);
render_piece (c1, c2, "whiteRook", 1);
render_piece (c1, c2, "whiteKnight", 2);
render_piece (c1, c2, "whiteBishop", 3);
render_piece (c1, c2, "whiteQueen", 4);
render_piece (c1, c2, "whiteKing", 5);
render_piece (c1, c2, "blackPawn", 6);
render_piece (c1, c2, "blackRook", 7);
render_piece (c1, c2, "blackKnight", 8);
render_piece (c1, c2, "blackBishop", 9);
render_piece (c1, c2, "blackQueen", 10);
render_piece (c1, c2, "blackKing", 11);
var c = new Cairo.Context (model_surface);
render_piece (c, "whitePawn", 0);
render_piece (c, "whiteRook", 1);
render_piece (c, "whiteKnight", 2);
render_piece (c, "whiteBishop", 3);
render_piece (c, "whiteQueen", 4);
render_piece (c, "whiteKing", 5);
render_piece (c, "blackPawn", 6);
render_piece (c, "blackRook", 7);
render_piece (c, "blackKnight", 8);
render_piece (c, "blackBishop", 9);
render_piece (c, "blackQueen", 10);
render_piece (c, "blackKing", 11);
loaded_theme_name = options.theme_name;
}
@ -98,25 +114,11 @@ private class ChessView2D : ChessView
int x = (int) ((file - 4) * square_size);
int y = (int) ((3 - rank) * square_size);
bool selected = false;
if (options.move_number == -1 && options.selected_rank == rank && options.selected_file == file)
selected = true;
c.rectangle (x, y, square_size, square_size);
if ((file + rank) % 2 == 0)
{
if (selected)
c.set_source_rgb (0x73/255.0, 0xd2/255.0, 0x16/255.0);
else
c.set_source_rgb (0xba/255.0, 0xbd/255.0, 0xb6/255.0);
}
c.set_source_rgb (0xba/255.0, 0xbd/255.0, 0xb6/255.0);
else
{
if (selected)
c.set_source_rgb (0x8a/255.0, 0xe2/255.0, 0x34/255.0);
else
c.set_source_rgb (0xee/255.0, 0xee/255.0, 0xec/255.0);
}
c.set_source_rgb (0xee/255.0, 0xee/255.0, 0xec/255.0);
c.fill ();
}
}
@ -198,11 +200,13 @@ private class ChessView2D : ChessView
/* Draw the piece in this square */
ChessPiece? piece = options.game.get_piece (rank, file, options.move_number);
if (piece != null)
draw_piece (c, piece, can_take ? 0.8 : 1.0);
draw_piece (c,
piece == selected_piece ? selected_model_surface : model_surface,
piece, can_take ? 0.8 : 1.0);
/* Draw shadow piece on squares that can be moved to */
if (can_take)
draw_piece (c, selected_piece, 0.1);
draw_piece (c, model_surface, selected_piece, 0.1);
c.restore ();
}
@ -211,19 +215,21 @@ private class ChessView2D : ChessView
return true;
}
private void draw_piece (Cairo.Context c, ChessPiece piece, double alpha)
private void draw_piece (Cairo.Context c, Cairo.ImageSurface surface, ChessPiece piece, double alpha)
{
c.save ();
if (options.board_side == "facetoface" && piece.color == Color.BLACK)
c.rotate (Math.PI);
c.translate (-square_size / 2, -square_size / 2);
var size = surface.get_height ();
c.translate (-size / 2, -size / 2);
int offset = piece.type;
if (piece.color == Color.BLACK)
offset += 6;
c.set_source_surface (model_surface, -offset * square_size, 0);
c.rectangle (0, 0, square_size, square_size);
c.set_source_surface (surface, -offset * size, 0);
c.rectangle (0, 0, size, size);
c.clip ();
c.paint_with_alpha (alpha);