421 lines
17 KiB
Plaintext
421 lines
17 KiB
Plaintext
-------------------------------------
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BUILDING 4coder_custom
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-------------------------------------
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To customize 4coder you have to build 4coder_custom.dll. The batch file buildsuper.bat will
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compile the dll for you if you have visual studio installed. If you have an old version, use
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the example to figure out how to get your old setup working in the new system.
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As you create your customizations keep in mind that this API is still in development.
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I will do what I can to keep your customizations working as I settle on an API, but some
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updates may deeply break your code.
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-------------------------------------
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SOME DOCUMENTATION
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-------------------------------------
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See comments in 4coder_default_bindings.cpp for more detailed information.
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Functions to implement (optional in the dll, but required if you are using buildsuper.bat):
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get_bindings
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NEW IN 4.0.3:
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================
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The build system for customizations has been changed. There is no longer a 4coder_custom.cpp.
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Instead the default customizations are in 4coder_default_bindings.cpp. The batch file takes a parameter
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that tells it what file to treat as the target for building, if the parameter is not defined it defaults to
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4coder_default_bindings.cpp.
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NEW IN 4.0.2:
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================
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#include "4coder_default.cpp" at the top of your own file to get a lot of the default functions
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such as incremental search, various word boundry seeks, and so on.
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app->buffer_seek_string_insensitive(app, &buffer, start, str, len, seek_forward, &out);
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Exactly the same as app->buffer_seek_string, but the matching rule is case insensitive
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app->get_command_input(app);
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Returns a User_Input that represents the input event that triggered the current command.
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app->print_message(app, str, len);
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Put a string into the *message* buffer.
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OLD API DOC:
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================================================================
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There is an API available to custom commands and hooks, described at length here.
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The system has two main data types, buffers and views. A buffer contains text,
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undo history, and tokens. Views looks at a file and has a cursor a mark a highlight
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and so on. The view and buffer are not the same because not all buffers are viewed,
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and there may be two views viewing the same buffer.
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================
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app->memory;
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app->memory_size;
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Here you get 2mb of memory that are completely yours to do whatever you need to do. This is for
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those who found that malloc was not working for their allocation needs. There are currently no
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allocation helpers so you'll have to figure out how to manage it.
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================
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app->directory_get_hot(app, out, capacity);
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Fills the out buffer with the "hot directory", which is the last directory 4coder has visited.
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If it cannot write out the whole name it writes only what it can.
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Always returns the length of the current hot directory in bytes.
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================
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app->file_exists(app, filename, len);
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Filename can be either a full path or a relative path.
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Returns whether the file exists.
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================
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app->directory_cd(app, dir, &len, capacity, rel_path, rel_len);
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Looks at dir and updates it's contents as if a "cd" command had been cone from that directory.
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if rel_path is ".." then the .. is not appended as a string, the directory is shortened if possible.
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Returns false if the directory does not exist or if ".." was specified but it is impossible to back up,
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returns true otherwise.
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================
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app->get_file_list(app, dir, len);
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If the directory exists, generates a list of all files and folders in that directory. All File_List structs
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generated by get_file_list should be freed with free_file_list.
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Returns a File_List struct listing all files and folders in dir, or an empty list if dir does not exist or is empty.
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================
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app->free_file_list(app, list);
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Frees a File_List created by get_file_list.
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================
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struct File_List;
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The important fields are:
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File_Info *infos;
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int count;
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count is the number of File_Info structs in the File_Info array.
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struct File_Info;
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String filename;
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int folder;
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folder is 1 or 0 to indicate whether the entry is a file or folder.
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filrname is a string which may be editted, but not resized, that is filled with the name of a file or folder.
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================
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app->get_buffer_first(app);
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app->get_buffer_next(app, &buffer);
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The new method for looping over buffers is:
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for (Buffer_Summary b = app->get_buffer_first(app);
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b.exists;
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app->get_buffer_next(app, &b)) { }
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================
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app->get_buffer(app, index);
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Returns a Buffer_Summary which contains information about a buffer and acts as the
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handle to the buffer for other functions. The parameter index can be anything in the
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range [0,max) where max comes from app->get_buffer_max_index
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================
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app->get_active_buffer(app, index);
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Returns a Buffer_Summary obtained from the active panel.
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================
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app->get_buffer_by_name(app, str, len);
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Returns a Buffer_Summary who's "full source path" exactly matches str. There is
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currently no way to look a buffer up by "live name" the short name shown on the top bar.
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Buffers that are not associated with real files such as *compilation* have their "full source path"
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name set to the same value as their live name, therefore you can get a *compilation* buffer with
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this API by the name "*compilation*".
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================
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app->refresh_buffer(app, &buffer);
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If a changes are made to a buffer the changes are not necessarily reflected in your Buffer_Summary,
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use this to get updated information on the buffer. All commands in the low level API will udpate
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your Buffer_Summary if a change is made, so refreshing afterwards is not necessary in that case.
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The function returns 1 on success and 0 on failure.
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================
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app->buffer_seek_delimiter(app, &buffer, start, delim, seek_forward, &out);
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Starting from start, seeks forward or backward until the first occurance of delim,
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the pointer out is filled with the position of the delimiter.
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If no delimiter is found out is filled with -1 for backward seeks and the size of the buffer on forward seeks.
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The function returns 1 on success and 0 on failure.
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================
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app->buffer_seek_string(app, &buffer, start, str, len, seek_forward, &out);
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Starting from start, seeks forward or backward until the first occurance of str,
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the pointer out is filled with the position of the delimiter.
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If no str is found out is filled with -1 for backward seeks and the size of the buffer on forward seeks.
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The function returns 1 on success and 0 on failure.
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================
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app->buffer_read_range(app, &buffer, start, end, buffer_out);
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Fills buffer_out with the text that the buffer contains in the range [start,end) it is your responsibility
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to ensure that the memory pointed to by buffer_out is at least (end - start) bytes.
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The function returns 1 on success and 0 on failure.
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================
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app->buffer_replace_range(app, &buffer, start, end, str, len);
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Replaces the text in the range between start and end with the the text in str. It is allowed that
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start == end so that you may insert str without replacing anything, and it is allowed that len == 0
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so that you may delete text without replacing it with anything. These edits are tracked by history
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and cause an update in the tokens if there are tokens. Your buffer will be updated to reflect
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the change in the buffer caused by this edit.
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The function returns 1 on success and 0 on failure.
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================
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View_Summary:
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There use to be a lot of different view types and only "file views" were exposed in the API.
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As of alpha 4 there are only views and you can always get a view.
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Besides renaming the struct, there is also a change in the meaning of the "buffer_id" field.
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A view can have a buffer attached, but not currently be looking at that file.
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All of the following indicate the buffer associated with the view:
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buffer_id
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locked_buffer_id
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hidden_buffer_id
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These ids are nulled out to indicate that access at a particular level is not available.
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buffer_id -
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This is null if the file is not visible in the view OR if the view is locked.
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A view is only locked right now for read only buffers (compilation output).
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locked_buffer_id -
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This is null only if the file is not visible.
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hidden_buffer_id -
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This is never null.
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In normal circumstances you can just use buffer_id and your code will automatically do
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nothing when you try to edit a buffer you should not.
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If what you are writing is unusual and it SHOULD edit a buffer even if it is locked or
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hidden, then you can use the other ids to get deeper access.
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================
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app->get_view_first(app);
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app->get_view_next(app, &view);
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The new method for looping over views is:
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for (View_Summary v = app->get_view_first(app);
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v.exists;
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app->get_view_next(app, &v)) { }
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================
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app->get_file_view(app, index);
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Returns a View_Summary which contains information about a file view and acts as
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the handle to the file view for other functions. The parameter index can be anything in the
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range [0,max) where max comes from app->get_view_max_index
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================
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app->get_active_file_view(app, index);
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Returns a View_Summary obtained from the active panel.
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================
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app->refresh_file_view(app, &view);
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If a changes are made to a view the changes are not necessarily reflected in your View_Summary,
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use this to get updated information on the view. All commands in the low level API will udpate
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your View_Summary if a change is made, so refreshing afterwards is not necessary in that case.
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The function returns 1 on success and 0 on failure.
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================
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struct Buffer_Seek;
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This struct specifies how to set a position in a file, it is in 4coder_buffer_types.h look there to see
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all the options.
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The following helpers will return Buffer_Seek structs for you:
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+ To seek to a particular position (0-based-indexing) use seek_pos(pos)
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+ To seek to a particular xy you either want seek_wrapped_xy(x, y, round_down)
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or seek_unwrapped_xy(x, y, round_down). Wrapped vs unwrapped refers to whether
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line wrapping is on. Both seek types are valid whether or not lines are wrapped, but
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the results may be surprising if you do not match the correct type. round_down is usually 0,
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and the effect is subtle, it has to do with whether the y position should be rounded down or rounded
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to the nearest line. x and y are specified in pixels to move the y up or down a while line use view.line_height.
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+ To seek to a particular line and character index on that line use seek_line_char(line, char_index)
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================
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app->view_set_cursor(app, &view, seek, set_preferred_x)
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Updates the cursor location in this view. See information on the Buffer_Seek struct above for more
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information. set_preferred_x if true set's the "preferred_x" of view to match the x of the cursor. The
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preferred_x is the x the cursor tries to stay at as it moves up and down. Most cursor motion does set
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the preferred_x.
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The function updates the data in the View_Summary.
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The function returns 1 on success and 0 on failure.
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================
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app->view_set_mark(app, &view, seek)
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Updates the mark location in this view. See information on the Buffer_Seek struct above for more
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information.
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The function updates the data in the View_Summary.
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The function returns 1 on success and 0 on failure.
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================
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app->view_set_highlight(app, &view, start, end, on)
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If on is 0 this call turns the highlight off.
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If on is 1 this call turns the highlight on and sets the highlight to range from start to end.
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While the highlight is on the view will follow the end of the highlight and the cursor will be hidden.
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Be sure to turn the highlight off when you're done with it!
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The function returns 1 on success and 0 on failure.
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================
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app->view_set_file(app, &view, file_id)
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Set this view to look at a different buffer (the buffer must already be opened and have a file_id).
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The function updates the data in the View_Summary.
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The function returns 1 on success and 0 on failure.
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================
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app->get_user_input(app, get_type, abort_type);
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This is a blocking operation that will allow 4coder to continue operating. The next input event
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will be intercepted by this command, and will not be interpreted as normal. Input events include:
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pressing a key
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clicking left or right
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rolling the mouse wheel
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moving the mouse
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The get_type flags specify a filter of what types of input you'd like to be notified about. Even if you
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are not notified about keyboard input events, they are still not passed to any other systems to be
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interpreted as commands or text input. The same is true for mouse input with the exception of
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panel resizing, which can be done durring a command.
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The abort_type flags specify the set of inputs you'd like to get an abort message on. It is good to
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specify abort flags so that the system will know when your command is about to finish up. After
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getting an abort message you can continue to do other work and call commands with exec_command
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but you should not call app->get_user_input again. It will not cause an error if you do, but it could lead
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to unexpected behavior. And in the future it might be that it IS an error to call get_user_input after an abort.
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================
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struct User_Input;
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type: either UserInputKey or UserInputMouse
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abort: true if this is an abort message, false otherwise
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key: information about a key event
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mouse: information about a mouse event
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command: if this event would be translated into a command normally, this is the command.
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Use CommandEqual to compare two commands in a typeless way since
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cmdid_* and custom commands have different types.
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================
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key is of type:
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struct Key_Event_Data;
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keycode: always set to exactly the key that was pressed
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character: a translation of the key press that takes into account Shift/Control/Alt/AltrGr/Caps-Lock
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character_no_caps_lock: same as "character" but doesn't take Caps-Lock into account
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modifiers[i]: flags for modifiers were held when this key was pressed
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i: MDFR_SHIFT_INDEX, MDFR_CONTROL_INDEX, MDFR_ALT_INDEX, MDFR_CAPS_INDEX
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TIP! Don't use MDFR_SHIFT, MDFR_CTRL, MDFR_ALT in the array! Those are bit masks, not indices!
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================
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mouse is of type:
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struct Mouse_State;
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l - whether the left button is down
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r - whether the right button is down
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press_l - whether the left button was just put down
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press_r - whether the right button was just put down
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release_l - whether the left button was just released
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release_r - whether the right button was just released
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wheel - values of 1, 0, -1. Does not report wheel amount, only direction.
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out_of_window - 1 if the mouse is outside of the 4coder window, 0 otherwise
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x, y - position of the mouse relative to the 4coder window
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================
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app->start_query_bar(app, &bar, 0);
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Notify 4coder that you are using a Query_Bar and you want it rendered onto the screen.
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While the query bar is still running any changes you make to prompt or string will be
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shown right away, you don't have to ask 4coder to update it's bar because it reads straight
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out of your Query_Bar.
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If the pointer you pass goes bad, because a stack frame ends or you otherwise no longer
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need the bar, you should call app->end_query_bar(app, &bar); so that 4coder doesn't try
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to render a query bar from garbage memory. If the command finishes and there are query
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bars that haven't been ended, 4coder automatically ends them.
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There is a limit of 8 simultaneous queries bars and right now only file views support them.
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The abillity to make a Query_Bar in other views including the empty view will come in the future though.
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The 0 is there because Iintend to add flags for query bars in the future,
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for modifying their appearance and behavior.
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Returns 1 if it successfully started a query bar.
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================
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app->end_query_bar(app, &bar);
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See start_query_bar for details.
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================
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Theme changing API
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app->change_theme(app, name, len)
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Set the theme to one of the prebuilt themes by name.
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app->change_font(app, name, len)
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Set the font to one of the fonts by name (not by ttf file name, by the name in the list).
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app->set_theme_colors(app, colors, count)
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Set colors of the current theme by tag color pairs.
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Changes from 3.3 to 3.4:
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-exposed command word complete
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Changes from 3.2 to 3.3:
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-exposed command build and added several example uses to the example file
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-introduced directory navigation API
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-slight tweaks to the API, moving away from macro translation
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Changes from 3.1 to 3.2:
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-exposed new commands relating to auto-tab
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-removed old commands for whitespace cleaning
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Changes from 3.0 to 3.1:
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-start_hook eliminated, now bound through set_hook durring the get_bindings function
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-vanilla_keys changed so that specific keys can be overriden
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-you can now specify your own maps
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-new parameter stack for communicating to some commands
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-fulfill_interaction has been removed (push_parameter will be used to achieve it's effect)
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-new hook for opening files, intended for file setting configuration
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-exposed the new commands relating to history and the timeline scrub bar
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Changes from 2.2.3 to 3.0:
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-exposed the new undo / redo commands
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Changes from 2.2.2 to 2.2.3:
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-The binding API is remarkably different, but I included a
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small set of helpers with this API that make the API look
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almost exactly the same.
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-you can now specify size for custom fonts
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-you can now fulfill interacive commands
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-fixed a bug that existed when some commands were used in exec_command
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Changes from 2.2.1 to 2.2.2:
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-added MDFR_SHIFT
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-removed redundant keys from Key_Codes struct
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-added bind_me
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-added exec_command
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-put bind, bind_me and exec_command into a struct
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-added Custom_Command_Function
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-added Start_Hook_Function
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