This CL adds client.toDataURL which gets the contents

of the client area as a data url (which is a base64
encoded string of a png file)

data urls are part of the HTML5 standard and supported
by firefox, safari and chrome.
http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-canvas-todataurl

That means you can now do this

var dataURL = client.toDataURL();
// make an IMG tag display the screenshot
someImgTag.src = dataURL;  
// use the IMG tag to draw into a canvas
someCanvasContext.drawImage(someImageTag, ...);

It also means there is no need for the test builds
anymore "test-dbg-d3d", "test-opt-d3d" etc as
toDataURL is part of the public API and can
therefore always be used to take screenshots
in any build.

I updated the selenium code to use it.

There are a few issues:

1) The GL version has the same limitations as taking
a screenshot before. Namely that the client area
must be on screen. We need to fix this.

2) We need to add support for origin-clean. See
https://tracker.corp.google.com/story/show/180334

Review URL: http://codereview.chromium.org/164130

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@22869 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 56 insertions, 0 deletions

diff --git a/o3d/utils/cross/base64.h b/o3d/utils/cross/base64.h
new file mode 100644
index 0000000..881f988
--- /dev/null
+++ b/o3d/utils/cross/base64.h
@@ -0,0 +1,56 @@
+/*

+ * Copyright 2009, Google Inc.

+ * All rights reserved.

+ *

+ * Redistribution and use in source and binary forms, with or without

+ * modification, are permitted provided that the following conditions are

+ * met:

+ *

+ *     * Redistributions of source code must retain the above copyright

+ * notice, this list of conditions and the following disclaimer.

+ *     * Redistributions in binary form must reproduce the above

+ * copyright notice, this list of conditions and the following disclaimer

+ * in the documentation and/or other materials provided with the

+ * distribution.

+ *     * Neither the name of Google Inc. nor the names of its

+ * contributors may be used to endorse or promote products derived from

+ * this software without specific prior written permission.

+ *

+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ */

+

+// This file contains the declaration of functions for dealing with base64

+// encoding and decoding

+

+#ifndef O3D_UTILS_CROSS_BASE64_H_

+#define O3D_UTILS_CROSS_BASE64_H_

+

+namespace o3d {

+namespace base64 {

+

+// Returns the number of bytes needed to encode length bytes in base64.

+size_t GetEncodeLength(size_t length);

+

+// Encodes the src into base64 into the dst. The dst must have enough

+// space to hold the result.

+// Parameters:

+//   src: pointer to source data.

+//   length: the length of the source data

+//   dst: pointer to place to store result.

+void Encode(const void* src, size_t length, void* dst);

+

+}  // namespace base64

+}  // namespace o3d

+

+#endif  // O3D_UTILS_CROSS_BASE64_H_

+