Always render svg pieces anew on size change

[xboard.git] / draw.c

diff --git a/draw.c b/draw.c
index eab7e87..da0c4d2 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>
@@ -110,7 +112,8 @@ extern char *getenv();
 #define SOLID 0
 #define OUTLINE 1
 Boolean cairoAnimate;
-static cairo_surface_t *csBoardWindow, *csDualBoard;
+Option *currBoard;
+cairo_surface_t *csBoardWindow;
 static cairo_surface_t *pngPieceImages[2][(int)BlackPawn+4];   // png 256 x 256 images
 static cairo_surface_t *pngPieceBitmaps[2][(int)BlackPawn];    // scaled pieces as used
 static cairo_surface_t *pngPieceBitmaps2[2][(int)BlackPawn+4]; // scaled pieces in store
@@ -131,14 +134,9 @@ static int dual = 0;
 void
 SwitchWindow ()
 {
-    cairo_surface_t *cstmp = csBoardWindow;
-    csBoardWindow = csDualBoard;
     dual = !dual;
-    if(!csDualBoard) {
-       csBoardWindow = DRAWABLE(dualOptions+3);
-       dual = 1;
-    }
-    csDualBoard = cstmp;
+    currBoard = (dual ? &mainOptions[W_BOARD] : &dualOptions[3]);
+    csBoardWindow = DRAWABLE(currBoard);
 }
 
 #define BoardSize int
@@ -265,9 +263,35 @@ 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;
 
+  g_type_init ();
+
+  if(*appData.svgDirectory) { // try to freshly render svg pieces first, always from file, to supply the source bitmap
+    snprintf(buf, MSG_SIZ, "%s/%s%s.svg", appData.svgDirectory, color ? "Black" : "White", pngPieceNames[piece]);
+
+    if(svg = rsvg_handle_new_from_file(buf,svgerror)) {
+
+      rsvg_handle_get_dimensions(svg, &svg_dimensions);
+      img = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, squareSize,  squareSize);
+
+      cr = cairo_create(img);
+      cairo_scale(cr, squareSize/(double) svg_dimensions.width, squareSize/(double) svg_dimensions.height);
+      rsvg_handle_render_cairo(svg, cr);
+      if(cairo_surface_status(img) == CAIRO_STATUS_SUCCESS) {
+        if(pngPieceImages[color][piece]) cairo_surface_destroy(pngPieceImages[color][piece]);
+        pngPieceImages[color][piece] = img;
+      }
+      cairo_destroy(cr);
+
+      rsvg_handle_close (svg,NULL);
+    }
+  }
+
   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]);
@@ -276,10 +300,13 @@ ScaleOnePiece (char *name, int color, int piece)
     }
   }
   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);
@@ -288,6 +315,7 @@ 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);
@@ -376,6 +404,7 @@ 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 )
@@ -389,6 +418,7 @@ 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)
@@ -407,6 +437,7 @@ 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)
@@ -431,17 +462,13 @@ 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
-DrawSeekOpen ()
-{
-    csBoardWindow = (cairo_surface_t *) mainOptions[W_BOARD].choice;
-}
-
-void
-DrawSeekClose ()
+InitDrawingHandle (Option *opt)
 {
+    csBoardWindow = DRAWABLE(opt);
 }
 
 void
@@ -477,7 +504,6 @@ DrawGrid()
   int i;
   cairo_t *cr;
 
-  DrawSeekOpen();
   /* get a cairo_t */
   cr = cairo_create (csBoardWindow);
 
@@ -502,7 +528,6 @@ void
 DrawBorder (int x, int y, int type)
 {
     cairo_t *cr;
-    DrawSeekOpen();
     char *col;
 
     switch(type) {
@@ -516,7 +541,7 @@ DrawBorder (int x, int y, int type)
     SetPen(cr, lineGap, col, 0);
     cairo_stroke(cr);
     cairo_destroy(cr);
-    DrawExpose(NULL, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap, squareSize+2*lineGap);
+    GraphExpose(currBoard, x - lineGap/2, y - lineGap/2, squareSize+2*lineGap, squareSize+2*lineGap);
 }
 
 static int
@@ -627,7 +652,6 @@ 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);
 }
 
@@ -637,8 +661,6 @@ 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 {
@@ -695,7 +717,6 @@ 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;
@@ -742,7 +763,7 @@ void CopyRectangle (AnimNr anr, int srcBuf, int destBuf,
        cairo_fill (cr);
        cairo_destroy (cr);
        if(c_animBufs[anr+destBuf] == csBoardWindow)
-           DrawExpose(NULL, destX, destY, squareSize, squareSize);
+           GraphExpose(currBoard, destX, destY, squareSize, squareSize);
 }
 
 void