150 lines
3.4 KiB
C
150 lines
3.4 KiB
C
/*
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* Copyright 2012 Michael Drake <tlsa@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* nsfb internal clipboard handling
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*/
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#include <assert.h>
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#include <stdint.h>
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#include <string.h>
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#include "desktop/selection.h"
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#include "framebuffer/gui.h"
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#include "utils/log.h"
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static struct gui_clipboard {
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char *buffer;
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size_t buffer_len;
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size_t length;
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} gui_clipboard;
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/**
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* Empty the clipboard, called prior to gui_add_to_clipboard and
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* gui_commit_clipboard
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*
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* \return true iff successful
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*/
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bool gui_empty_clipboard(void)
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{
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const size_t init_size = 1024;
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if (gui_clipboard.buffer_len == 0) {
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gui_clipboard.buffer = malloc(init_size);
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if (gui_clipboard.buffer == NULL)
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return false;
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gui_clipboard.buffer_len = init_size;
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}
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gui_clipboard.length = 0;
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return true;
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}
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/**
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* Add some text to the clipboard, optionally appending a trailing space.
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*
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* \param text text to be added
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* \param length length of text in bytes
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* \param space indicates whether a trailing space should be appended
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* \return true iff successful
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*/
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bool gui_add_to_clipboard(const char *text, size_t length, bool space)
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{
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size_t new_length = gui_clipboard.length + length + (space ? 1 : 0) + 1;
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if (new_length > gui_clipboard.buffer_len) {
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size_t new_alloc = new_length + (new_length / 4);
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char *new_buff;
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new_buff = realloc(gui_clipboard.buffer, new_alloc);
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if (new_buff == NULL)
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return false;
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gui_clipboard.buffer = new_buff;
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gui_clipboard.buffer_len = new_alloc;
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}
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memcpy(gui_clipboard.buffer + gui_clipboard.length, text, length);
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gui_clipboard.length += length;
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if (space)
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gui_clipboard.buffer[gui_clipboard.length++] = ' ';
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gui_clipboard.buffer[gui_clipboard.length] = '\0';
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return true;
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}
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/**
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* Commit the changes made by gui_empty_clipboard and gui_add_to_clipboard.
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*
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* \return true iff successful
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*/
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bool gui_commit_clipboard(void)
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{
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/* TODO: Stick the clipboard in some fbtk buffer? */
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return true;
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}
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/**
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* Copy the selected contents to the clipboard
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*
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* \param s selection
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* \return true iff successful, ie. cut operation can proceed without losing data
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*/
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bool gui_copy_to_clipboard(struct selection *s)
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{
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if (!gui_empty_clipboard())
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return false;
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selection_copy_to_clipboard(s);
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return gui_commit_clipboard();
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}
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/**
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* Request to paste the clipboard contents into a textarea/input field
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* at a given position.
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*
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* \param g gui window
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* \param x x ordinate at which to paste text
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* \param y y ordinate at which to paste text
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*/
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void gui_paste_from_clipboard(struct gui_window *g, int x, int y)
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{
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if (gui_clipboard.length > 0) {
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LOG(("Pasting %i chars: \"%s\"\n", gui_clipboard.length,
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gui_clipboard.buffer));
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browser_window_paste_text(g->bw, gui_clipboard.buffer,
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gui_clipboard.length, true);
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}
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}
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