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[broadway] Fix up scrolling

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This commit is contained in:
Alexander Larsson 2010-11-21 22:12:39 +01:00
parent bed0ccba9d
commit d0e403c54d
1 changed files with 23 additions and 1 deletions
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24
gdk/broadway/broadway.js
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@ -179,6 +179,10 @@ function handleCommands(cmd_obj)
var context = surfaces[id];
context.save();
var minx;
var miny;
var maxx;
var maxy;
for (var r = 0; r < nrects; r++) {
var x = base64_16(cmd, i);
i = i + 3;
@ -189,6 +193,22 @@ function handleCommands(cmd_obj)
var h = base64_16(cmd, i);
i = i + 3;
context.rect(x, y, w, h);
if (r == 0) {
minx = x;
miny = y;
maxx = x + w;
maxy = y + h;
} else {
if (x < minx)
minx = x;
if (y < miny)
miny = y;
if (x + w > maxx)
maxx = x + w;
if (y + h > maxy)
maxy = y + h;
}
}
context.clip()
@ -198,7 +218,9 @@ function handleCommands(cmd_obj)
var dy = base64_16s(cmd, i);
i = i + 3;
context.drawImage(context.canvas, dx, dy, context.canvas.width, context.canvas.height);
context.drawImage(context.canvas,
minx - dx, miny - dy, maxx - minx, maxy - miny,
minx, miny, maxx - minx, maxy - miny);
context.restore();
break;