Interactively presenting a visible portion of a rendering surface on a user device

A system comprising:

• a memory that stores instructions;
• and
• a processor configured to execute the instructions to:
• access, at a user device from a server, content of an electronic document and a shared layout for the electronic document, wherein the shared layout provides a layout for a plurality of user devices having different dimensions of display areas;
• render the content of the electronic document onto a primary virtual rendering surface and a secondary virtual rendering surface, wherein the primary virtual rendering surface is associated with a native platform of the user device and the secondary virtual rendering surface is associate with the shared layout of the server;
• applying a plurality of operation commands to modify the primary virtual rendering surface, the plurality of operation commands resulting from a user interaction with the electronic document;
• merge the plurality of operation commands into a merged operation call, wherein the plurality of operation commands comprise relative coordinates that are specified relative to one or more parent nodes in a layout tree, and to merge the plurality of operation commands comprises merging the relative coordinates into one or more absolute coordinates for the merged operation call, the one or more absolute coordinates corresponding to a position of at least a portion of the content of the electronic document relative to an entirety of the primary virtual rendering surface;
• and
• invoke, by the user device, the merged operation call to modify the secondary virtual rendering surface, wherein the merged operation call reduces a number of operation calls that modify the secondary virtual rendering surface and is shared with the server to modify the shared layout.

A non-transitory processor-readable storage medium storing instructions that, when executed by a processor, cause the processor to:

• access, by a user device from a server, content of an electronic document and a shared layout for the electronic document, wherein the shared layout provides a layout for a plurality of user devices having different dimensions of display areas;
• render the content of the electronic document onto a primary virtual rendering surface and a secondary virtual rendering surface, wherein the primary virtual rendering surface is associated with a native platform of the user device and the secondary virtual rendering surface is associated with the shared layout of the server;
• applying, by the user device, a plurality of operation commands to modify the primary virtual rendering surface, the plurality of operation commands resulting from a user interaction with the electronic document;
• merge, by the user device, the plurality of operation commands into a merged operation call, wherein the plurality of operation commands comprise relative coordinates that are specified relative to one or more parent nodes in a layout tree, and wherein merging the plurality of operation commands further comprise merging the relative coordinates into one or more absolute coordinates for the merged operation call, the one or more absolute coordinates corresponding to a position of at least a portion of the content of the electronic document relative to an entirety of the primary virtual rendering surface;
• and
• invoke, by the user device, the merged operation call to modify the secondary virtual rendering surface, wherein the merged operation call reduces a number of operation calls that modify the secondary virtual rendering surface and is shared with the server to modify the shared layout.