diff options
author | Andreas Kling <kling@serenityos.org> | 2021-04-19 23:47:29 +0200 |
---|---|---|
committer | Andreas Kling <kling@serenityos.org> | 2021-04-19 23:49:16 +0200 |
commit | 955eef83b0181b57f367f15fefccc63bddf3da86 (patch) | |
tree | 73cbda850fffc14ba843a39fa497bf1992559819 /Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp | |
parent | 67935740037e94543458754ad219a6737e662903 (diff) | |
download | serenity-955eef83b0181b57f367f15fefccc63bddf3da86.zip |
LibWeb: Add basic support for HTMLCanvasElement.toDataURL() :^)
This allows you to serialize a <canvas> element's bitmap into a
data: URI. Pretty neat! :^)
Diffstat (limited to 'Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp')
-rw-r--r-- | Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp index fed960276e..b1e505f25b 100644 --- a/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp +++ b/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp @@ -24,8 +24,10 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include <AK/Base64.h> #include <AK/Checked.h> #include <LibGfx/Bitmap.h> +#include <LibGfx/PNGWriter.h> #include <LibWeb/CSS/StyleResolver.h> #include <LibWeb/DOM/Document.h> #include <LibWeb/HTML/CanvasRenderingContext2D.h> @@ -102,4 +104,14 @@ bool HTMLCanvasElement::create_bitmap() return m_bitmap; } +String HTMLCanvasElement::to_data_url(const String& type, [[maybe_unused]] Optional<double> quality) const +{ + if (!m_bitmap) + return {}; + if (type != "image/png") + return {}; + auto encoded_bitmap = Gfx::PNGWriter::encode(*m_bitmap); + return URL::create_with_data(type, encode_base64(encoded_bitmap), true).to_string(); +} + } |