258 lines
6.6 KiB
C
258 lines
6.6 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac-client-ssh.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _SSH_GUAC_DISPLAY_H
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#define _SSH_GUAC_DISPLAY_H
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#include <pango/pangocairo.h>
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#include <guacamole/client.h>
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#include "types.h"
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/**
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* The available color palette. All integer colors within structures
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* here are indices into this palette.
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*/
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extern const guac_terminal_color guac_terminal_palette[16];
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/**
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* All available terminal operations which affect character cells.
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*/
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typedef enum guac_terminal_operation_type {
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/**
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* Operation which does nothing.
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*/
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GUAC_CHAR_NOP,
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/**
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* Operation which copies a character from a given row/column coordinate.
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*/
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GUAC_CHAR_COPY,
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/**
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* Operation which sets the character and attributes.
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*/
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GUAC_CHAR_SET
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} guac_terminal_operation_type;
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/**
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* A pairing of a guac_terminal_operation_type and all parameters required by
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* that operation type.
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*/
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typedef struct guac_terminal_operation {
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/**
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* The type of operation to perform.
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*/
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guac_terminal_operation_type type;
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/**
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* The character (and attributes) to set the current location to. This is
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* only applicable to GUAC_CHAR_SET.
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*/
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guac_terminal_char character;
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/**
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* The row to copy a character from. This is only applicable to
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* GUAC_CHAR_COPY.
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*/
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int row;
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/**
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* The column to copy a character from. This is only applicable to
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* GUAC_CHAR_COPY.
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*/
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int column;
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} guac_terminal_operation;
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/**
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* A cached glyph.
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*/
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typedef struct guac_terminal_glyph {
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/**
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* The location within the glyph layer that this glyph can be found.
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*/
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int location;
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/**
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* The codepoint currently stored at that location.
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*/
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int codepoint;
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} guac_terminal_glyph;
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/**
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* Set of all pending operations for the currently-visible screen area.
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*/
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typedef struct guac_terminal_display {
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/**
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* The Guacamole client this display will use for rendering.
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*/
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guac_client* client;
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/**
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* Array of all operations pending for the visible screen area.
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*/
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guac_terminal_operation* operations;
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/**
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* The width of the screen, in characters.
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*/
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int width;
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/**
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* The height of the screen, in characters.
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*/
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int height;
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/**
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* The description of the font to use for rendering.
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*/
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PangoFontDescription* font_desc;
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/**
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* The width of each character, in pixels.
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*/
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int char_width;
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/**
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* The height of each character, in pixels.
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*/
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int char_height;
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/**
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* Index of next glyph to create
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*/
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int next_glyph;
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/**
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* Index of locations for each glyph in the stroke and fill layers.
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*/
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guac_terminal_glyph glyphs[512];
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/**
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* Color of glyphs in copy buffer
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*/
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int glyph_foreground;
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/**
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* Color of glyphs in copy buffer
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*/
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int glyph_background;
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/**
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* Layer above default layer which highlights selected text.
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*/
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guac_layer* select_layer;
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/**
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* A single wide layer holding each glyph, with each glyph only
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* colored with foreground color (background remains transparent).
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*/
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guac_layer* glyph_stroke;
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/**
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* A single wide layer holding each glyph, with each glyph properly
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* colored with foreground and background color (no transparency at all).
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*/
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guac_layer* filled_glyphs;
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} guac_terminal_display;
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/**
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* Allocates a new display having the given default foreground and background
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* colors.
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*/
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guac_terminal_display* guac_terminal_display_alloc(guac_client* client, int foreground, int background);
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/**
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* Frees the given display.
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*/
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void guac_terminal_display_free(guac_terminal_display* display);
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/**
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* Copies the given range of columns to a new location, offset from
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* the original by the given number of columns.
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*/
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void guac_terminal_display_copy_columns(guac_terminal_display* display, int row,
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int start_column, int end_column, int offset);
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/**
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* Copies the given range of rows to a new location, offset from the
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* original by the given number of rows.
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*/
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void guac_terminal_display_copy_rows(guac_terminal_display* display,
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int start_row, int end_row, int offset);
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/**
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* Sets the given range of columns within the given row to the given
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* character.
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*/
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void guac_terminal_display_set_columns(guac_terminal_display* display, int row,
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int start_column, int end_column, guac_terminal_char* character);
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/**
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* Resize the terminal to the given dimensions.
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*/
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void guac_terminal_display_resize(guac_terminal_display* display, int width, int height);
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/**
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* Flushes all pending operations within the given guac_terminal_display.
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*/
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void guac_terminal_display_flush(guac_terminal_display* display);
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/**
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* Draws the text selection rectangle from the given coordinates to the given end coordinates.
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*/
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void guac_terminal_display_select(guac_terminal_display* display,
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int start_row, int start_col, int end_row, int end_col);
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/**
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* Clears the select rectangle.
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*/
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void guac_terminal_display_clear_select(guac_terminal_display* display);
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#endif
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