NPAPI:DrawImage: Difference between revisions

NPAPI:DrawImage (view source)

156 bytes removed , 27 April 2010

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@@ Line 64: / Line 64: @@
    } NPImageData;
-= NPImageFormat type negotiation =
+= NPImageFormat Type Negotiation =
-<pre>
+* NPNVSupportedImageFormats (NPNVariable = ?)
-NPNVsupportsImageFormat = 5000,
+* NPPVImageFormat (NPPVariable = ?)
-</pre>
-Similar to Event types negotiation [[Plugins:IndependentEventModel#NPEventType_negotiation]]
+Negotiating the image format will work similarly to [[NPAPI:Models|drawing and event model negotiation]], but the value of NPNVsupportsImageFormat will be a bitmap of supported types. Based on the browser's supported formats, the plugin should select a format.
-<pre>
+  NPImageFormat supportedFormats;
-NPImageFormat aFormats;
+  browserFuncs->getvalue(instance, NPNVsupportsImageFormat, &supportedFormats);
-browser->getvalue(instance, NPNVsupportsImageFormat, &aFormats)
+  ...
-</pre>
+  browserFuncs->setvalue(instance, NPPVImageFormat, (void*)selectedFormat);
-Then the plugin should decide which formats supported by plugin and browser (remove bits which are not supported by plugin), and send a value to browser:
-<pre>
-browser->setvalue(instance, NPNVsupportsImageFormat, commonFormats);
-</pre>
-And then browser should use only formats enumerated in commonFormats value.
-According to plugin state (transparency), and platform proffered depth/image-format browser will send event to plugin with specific format.