// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "webkit/plugins/sad_plugin.h"

#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkScalar.h"
#include "ui/gfx/blit.h"
#include "ui/gfx/canvas_skia.h"
#include "ui/gfx/rect.h"

namespace webkit {

void PaintSadPlugin(WebKit::WebCanvas* webcanvas,
                    const gfx::Rect& plugin_rect,
                    const SkBitmap& sad_plugin_bitmap) {
  // Make a temporary canvas for the background image.
  const int width = plugin_rect.width();
  const int height = plugin_rect.height();
  gfx::CanvasSkia canvas(width, height, false);
#if defined(OS_MACOSX)
  // Flip the canvas, since the context expects flipped data.
  canvas.translate(0, height);
  canvas.scale(1, -1);
#endif
  SkPaint paint;

  paint.setStyle(SkPaint::kFill_Style);
  paint.setColor(SK_ColorBLACK);
  canvas.drawRectCoords(0, 0, SkIntToScalar(width), SkIntToScalar(height),
                        paint);
  canvas.DrawBitmapInt(sad_plugin_bitmap,
                       std::max(0, (width - sad_plugin_bitmap.width()) / 2),
                       std::max(0, (height - sad_plugin_bitmap.height()) / 2));

  // It's slightly less code to make a big SkBitmap of the sad tab image and
  // then copy that to the screen than to use the native APIs. The small speed
  // penalty is not important when drawing crashed plugins.
#if WEBKIT_USING_SKIA
  gfx::NativeDrawingContext context = skia::BeginPlatformPaint(webcanvas);
  BlitCanvasToContext(context, plugin_rect, &canvas, gfx::Point(0, 0));
  skia::EndPlatformPaint(webcanvas);
#elif WEBKIT_USING_CG
  BlitCanvasToContext(webcanvas, plugin_rect, &canvas, gfx::Point(0, 0));
#endif
}

}  // namespace webkit