initial svg rendering

[xboard.git] / draw.c

diff --git a/draw.c b/draw.c
index 668e4a5..200d05a 100644 (file)
--- a/draw.c
+++ b/draw.c
@@ -55,6 +55,8 @@
 #include <math.h>
 #include <cairo/cairo.h>
 #include <cairo/cairo-xlib.h>
+#include <librsvg/rsvg.h>
+#include <librsvg/rsvg-cairo.h>
 
 #if STDC_HEADERS
 # include <stdlib.h>
@@ -261,21 +263,48 @@ ScaleOnePiece (char *name, int color, int piece)
 {
   float w, h;
   char buf[MSG_SIZ];
+  RsvgHandle *svg=NULL;
+  RsvgDimensionData svg_dimensions;
+  GError **svgerror=NULL;
   cairo_surface_t *img, *cs;
   cairo_t *cr;
+  int stride = squareSize * 4;
+  double scale;
+
+  g_type_init ();
 
   if((img = pngPieceImages[color][piece]) == NULL) { // if PNG file for this piece was not yet read, read it now and store it
     if(!*appData.pngDirectory) img = ConvertPixmap(color, piece); else {
-      snprintf(buf, MSG_SIZ, "%s/%s%s.png", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]);
-      img = cairo_image_surface_create_from_png (buf);
+      snprintf(buf, MSG_SIZ, "%s/%s%s.svg", appData.pngDirectory, color ? "Black" : "White", pngPieceNames[piece]);
+
+      svg = rsvg_handle_new ();
+      svg = rsvg_handle_new_from_file(buf,svgerror);
+
+      rsvg_handle_get_dimensions(svg, &svg_dimensions);
+
+      unsigned char* cairo_data =(unsigned char *) calloc(stride * squareSize, 1);
+      img = cairo_image_surface_create_for_data(cairo_data, CAIRO_FORMAT_ARGB32, squareSize,  squareSize, stride);
+
+      cairo_t *cr_svg = cairo_create(img);
+
+      scale = (double) squareSize/(double) svg_dimensions.height;
+      cairo_scale(cr_svg, scale,scale);
+      cairo_set_antialias (cr_svg, CAIRO_ANTIALIAS_NONE);
+      rsvg_handle_render_cairo(svg, cr_svg);
+
       if(cairo_surface_status(img) != CAIRO_STATUS_SUCCESS) img = ConvertPixmap(color, piece);
+
+      rsvg_handle_close (svg,NULL);
     }
   }
   pngPieceImages[color][piece] = img;
+
+
   // create new bitmap to hold scaled piece image (and remove any old)
   if(pngPieceBitmaps2[color][piece]) cairo_surface_destroy (pngPieceBitmaps2[color][piece]);
   pngPieceBitmaps2[color][piece] = cs = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, squareSize, squareSize);
   if(piece <= WhiteKing) pngPieceBitmaps[color][piece] = cs;
+
   // scaled copying of the raw png image
   cr = cairo_create(cs);
   w = cairo_image_surface_get_width (img);
@@ -284,6 +313,7 @@ ScaleOnePiece (char *name, int color, int piece)
   cairo_set_source_surface (cr, img, 0, 0);
   cairo_paint (cr);
   cairo_destroy (cr);
+
   { // operate on bitmap to color it (king-size hack...)
     int stride = cairo_image_surface_get_stride(cs)/4;
     int *buf = (int *) cairo_image_surface_get_data(cs);
@@ -372,6 +402,7 @@ void DrawSeekAxis( int x, int y, int xTo, int yTo )
 
     /* free memory */
     cairo_destroy (cr);
+    GraphExpose(currBoard, x-1, yTo-1, xTo-x+2, y-yTo+2);
 }
 
 void DrawSeekBackground( int left, int top, int right, int bottom )
@@ -385,6 +416,7 @@ void DrawSeekBackground( int left, int top, int right, int bottom )
 
     /* free memory */
     cairo_destroy (cr);
+    GraphExpose(currBoard, left, top, right-left, bottom-top);
 }
 
 void DrawSeekText(char *buf, int x, int y)
@@ -403,6 +435,7 @@ void DrawSeekText(char *buf, int x, int y)
 
     /* free memory */
     cairo_destroy (cr);
+    GraphExpose(currBoard, x-5, y-10, 60, 15);
 }
 
 void DrawSeekDot(int x, int y, int colorNr)
@@ -427,6 +460,7 @@ void DrawSeekDot(int x, int y, int colorNr)
 
     /* free memory */
     cairo_destroy (cr);
+    GraphExpose(currBoard, x-squareSize/8, y-squareSize/8, 2*(squareSize/8), 2*(squareSize/8));
 }
 
 void
@@ -436,16 +470,6 @@ InitDrawingHandle (Option *opt)
 }
 
 void
-DrawSeekOpen ()
-{
-}
-
-void
-DrawSeekClose ()
-{
-}
-
-void
 CreateGrid ()
 {
     int i, j;
@@ -478,7 +502,6 @@ DrawGrid()
   int i;
   cairo_t *cr;
 
-  DrawSeekOpen();
   /* get a cairo_t */
   cr = cairo_create (csBoardWindow);
 
@@ -503,7 +526,6 @@ void
 DrawBorder (int x, int y, int type)
 {
     cairo_t *cr;
-    DrawSeekOpen();
     char *col;
 
     switch(type) {
@@ -628,7 +650,6 @@ DoDrawDot (cairo_surface_t *cs, int marker, int x, int y, int r)
 void
 DrawDot (int marker, int x, int y, int r)
 { // used for atomic captures; no need to draw on backup
-  DrawSeekOpen();
   DoDrawDot(csBoardWindow, marker, x, y, r);
 }
 
@@ -638,8 +659,6 @@ DrawOneSquare (int x, int y, ChessSquare piece, int square_color, int marker, ch
     // piece, background, coordinate/count, marker dot
     cairo_t *cr;
 
-    DrawSeekOpen();
-
     if (piece == EmptySquare) {
        BlankSquare(csBoardWindow, x, y, square_color, piece, 1);
     } else {
@@ -696,7 +715,6 @@ static cairo_surface_t *c_animBufs[3*NrOfAnims]; // newBuf, saveBuf
 static void
 InitAnimState (AnimNr anr)
 {
-    DrawSeekOpen(); // set cs to board widget
     if(c_animBufs[anr]) cairo_surface_destroy (c_animBufs[anr]);
     if(c_animBufs[anr+2]) cairo_surface_destroy (c_animBufs[anr+2]);
     c_animBufs[anr+4] = csBoardWindow;