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authorMichael Drake <tlsa@netsurf-browser.org>2013-02-07 14:36:54 +0000
committerMichael Drake <tlsa@netsurf-browser.org>2013-02-07 14:36:54 +0000
commit08035f1197405133ef1638eff4f312ddfb84e597 (patch)
treeb0dcc0fcf9701e4c3bd4d8db4af45679d69742bd
parentcb283c516a0c727953d33d9d202f9666ac53b2f5 (diff)
downloadnetsurf-08035f1197405133ef1638eff4f312ddfb84e597.tar.gz
netsurf-08035f1197405133ef1638eff4f312ddfb84e597.tar.bz2
Remove unused textinput widget. (Old html form text editing.)
-rw-r--r--render/textinput.c2213
-rw-r--r--render/textinput.h41
2 files changed, 0 insertions, 2254 deletions
diff --git a/render/textinput.c b/render/textinput.c
deleted file mode 100644
index e9c6df7b2..000000000
--- a/render/textinput.c
+++ /dev/null
@@ -1,2213 +0,0 @@
-/*
- * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
- * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
- * Copyright 2004 Andrew Timmins <atimmins@blueyonder.co.uk>
- * Copyright 2004 John Tytgat <joty@netsurf-browser.org>
- * Copyright 2005 Adrian Lees <adrianl@users.sourceforge.net>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * HTML form text input handling (implementation)
- */
-
-#include <assert.h>
-#include <ctype.h>
-#include <string.h>
-
-#include <dom/dom.h>
-
-#include "desktop/browser.h"
-#include "desktop/gui.h"
-#include "desktop/mouse.h"
-#include "desktop/scrollbar.h"
-#include "desktop/selection.h"
-#include "desktop/textinput.h"
-#include "render/box.h"
-#include "render/font.h"
-#include "render/form.h"
-#include "render/html_internal.h"
-#include "render/layout.h"
-#include "render/textinput.h"
-#include "utils/log.h"
-#include "utils/talloc.h"
-#include "utils/utf8.h"
-#include "utils/utils.h"
-
-/* Define to enable textinput debug */
-#undef TEXTINPUT_DEBUG
-
-
-static bool textinput_textbox_delete(struct content *c,
- struct box *text_box, unsigned char_offset,
- unsigned utf8_len);
-
-/* Textarea callbacks */
-static bool textinput_textarea_callback(struct browser_window *bw,
- uint32_t key, void *p1, void *p2);
-static void textinput_textarea_move_caret(struct browser_window *bw,
- void *p1, void *p2);
-static bool textinput_textarea_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last,
- void *p1, void *p2);
-
-/* Text input callbacks */
-static bool textinput_input_callback(struct browser_window *bw,
- uint32_t key, void *p1, void *p2);
-static void textinput_input_move_caret(struct browser_window *bw,
- void *p1, void *p2);
-static bool textinput_input_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last,
- void *p1, void *p2);
-
-#define SPACE_LEN(b) ((b->space == 0) ? 0 : 1)
-
-
-static struct textinput_buffer {
- char *buffer;
- size_t buffer_len;
- size_t length;
-} textinput_buffer;
-
-
-
-/**
- * Given the x,y co-ordinates of a point within a textarea, return the
- * TEXT box pointer, and the character and pixel offsets within that
- * box at which the caret should be positioned. (eg. for mouse clicks,
- * drag-and-drop insertions etc)
- *
- * \param textarea the textarea being considered
- * \param x x ordinate of point
- * \param y y ordinate of point
- * \param pchar_offset receives the char offset within the TEXT box
- * \param ppixel_offset receives the pixel offset within the TEXT box
- * \return pointer to TEXT box
- */
-
-static struct box *textinput_textarea_get_position(struct box *textarea,
- int x, int y, int *pchar_offset, int *ppixel_offset)
-{
- /* A textarea is an INLINE_BLOCK containing a single
- * INLINE_CONTAINER, which contains the text as runs of TEXT
- * separated by BR. There is at least one TEXT. The first and
- * last boxes are TEXT. Consecutive BR may not be present. These
- * constraints are satisfied by using a 0-length TEXT for blank
- * lines. */
-
- struct box *inline_container, *text_box;
- plot_font_style_t fstyle;
- size_t char_offset = 0;
-
- inline_container = textarea->children;
-
- if (inline_container->y + inline_container->height < y) {
- /* below the bottom of the textarea: place caret at end */
- text_box = inline_container->last;
- assert(text_box->type == BOX_TEXT);
- assert(text_box->text);
- font_plot_style_from_css(text_box->style, &fstyle);
- /** \todo handle errors */
- nsfont.font_position_in_string(&fstyle, text_box->text,
- text_box->length,
- (unsigned int)(x - text_box->x),
- &char_offset, ppixel_offset);
- } else {
- /* find the relevant text box */
- y -= inline_container->y;
- for (text_box = inline_container->children;
- text_box &&
- text_box->y + text_box->height < y;
- text_box = text_box->next)
- ;
- for (; text_box && text_box->type != BOX_BR &&
- text_box->y <= y &&
- text_box->x + text_box->width < x;
- text_box = text_box->next)
- ;
- if (!text_box) {
- /* past last text box */
- text_box = inline_container->last;
- assert(text_box->type == BOX_TEXT);
- assert(text_box->text);
- font_plot_style_from_css(text_box->style, &fstyle);
- nsfont.font_position_in_string(&fstyle,
- text_box->text,
- text_box->length,
- textarea->width,
- &char_offset,
- ppixel_offset);
- } else {
- /* in a text box */
- if (text_box->type == BOX_BR)
- text_box = text_box->prev;
- else if (y < text_box->y && text_box->prev) {
- if (text_box->prev->type == BOX_BR) {
- assert(text_box->prev->prev);
- text_box = text_box->prev->prev;
- }
- else
- text_box = text_box->prev;
- }
- assert(text_box->type == BOX_TEXT);
- assert(text_box->text);
- font_plot_style_from_css(text_box->style, &fstyle);
- nsfont.font_position_in_string(&fstyle,
- text_box->text,
- text_box->length,
- (unsigned int)(x - text_box->x),
- &char_offset,
- ppixel_offset);
- }
- }
-
- *pchar_offset = char_offset;
-
- assert(text_box);
- return text_box;
-}
-
-
-/**
- * Delete some text from a box, or delete the box in its entirety
- *
- * \param c html content
- * \param b box
- * \param offset start offset of text to be deleted (in bytes)
- * \param length length of text to be deleted
- * \return true iff successful
- */
-
-static bool textinput_delete_handler(struct content *c, struct box *b,
- int offset, size_t length)
-{
- size_t text_length = b->length + SPACE_LEN(b);
-
- /* only remove if its not the first box */
- if (offset <= 0 && length >= text_length && b->prev != NULL) {
- /* remove the entire box */
- box_unlink_and_free(b);
-
- return true;
- } else
- return textinput_textbox_delete(c, b, offset,
- min(length, text_length - offset));
-}
-
-
-/**
- * Remove the selected text from a text box and gadget (if applicable)
- *
- * \param c The content containing the selection
- * \param s The selection to be removed
- */
-
-static void textinput_delete_selection(struct content *c, struct selection *s)
-{
- size_t start_offset, end_offset;
- struct box *text_box;
- struct box *end_box;
- struct box *next;
- size_t sel_len;
- int beginning = 0;
-
- assert(s->defined);
-
- text_box = selection_get_start(s, &start_offset);
- end_box = selection_get_end(s, &end_offset);
- sel_len = s->end_idx - s->start_idx;
-
- /* Clear selection so that deletion from textboxes proceeds */
- selection_clear(s, true);
-
- /* handle first box */
- textinput_delete_handler(c, text_box, start_offset, sel_len);
- if (text_box == end_box)
- return;
-
- for (text_box = text_box->next; text_box != end_box; text_box = next) {
- next = text_box->next;
- box_unlink_and_free(text_box);
- }
-
- textinput_delete_handler(c, end_box, beginning, end_offset);
-}
-
-
-/**
- * Insert a number of chars into a text box
- *
- * \param c html_content
- * \param text_box text box
- * \param char_offset offset (bytes) at which to insert text
- * \param utf8 UTF-8 text to insert
- * \param utf8_len length (bytes) of UTF-8 text to insert
- * \return true iff successful
- */
-
-static bool textinput_textbox_insert(struct content *c,
- struct box *text_box, unsigned char_offset, const char *utf8,
- unsigned utf8_len)
-{
- html_content *html = (html_content *)c;
- char *text;
- struct box *input = text_box->parent->parent;
- bool hide;
-
- if (html->bw && html->sel.defined)
- textinput_delete_selection(c, &html->sel);
-
- /* insert into form gadget (text and password inputs only) */
- if (input->gadget && (input->gadget->type == GADGET_TEXTBOX ||
- input->gadget->type == GADGET_PASSWORD) &&
- input->gadget->value) {
- size_t form_offset = input->gadget->caret_form_offset;
- char *value = realloc(input->gadget->value,
- input->gadget->length + utf8_len + 1);
- if (!value) {
- warn_user("NoMemory", 0);
- return true;
- }
- input->gadget->value = value;
-
- memmove(input->gadget->value + form_offset + utf8_len,
- input->gadget->value + form_offset,
- input->gadget->length - form_offset);
- memcpy(input->gadget->value + form_offset, utf8, utf8_len);
- input->gadget->length += utf8_len;
- input->gadget->value[input->gadget->length] = 0;
- }
-
- hide = (input->gadget && input->gadget->type == GADGET_PASSWORD);
- if (hide) {
- /* determine the number of '*'s to be inserted */
- const char *eutf8 = utf8 + utf8_len;
- utf8_len = 0;
- while (utf8 < eutf8) {
- utf8 += utf8_next(utf8, eutf8 - utf8, 0);
- utf8_len++;
- }
- }
-
- /* insert in text box */
- text = talloc_realloc(html->bctx, text_box->text,
- char,
- text_box->length + SPACE_LEN(text_box) + utf8_len + 1);
- if (!text) {
- warn_user("NoMemory", 0);
- return false;
- }
- text_box->text = text;
-
- if (text_box->space != 0 &&
- char_offset == text_box->length + SPACE_LEN(text_box)) {
- if (hide)
- text_box->space = 0;
- else {
- unsigned int last_off = utf8_prev(utf8, utf8_len);
- if (utf8[last_off] != ' ')
- text_box->space = 0;
- else
- utf8_len = last_off;
- }
- text_box->text[text_box->length++] = ' ';
- } else {
- memmove(text_box->text + char_offset + utf8_len,
- text_box->text + char_offset,
- text_box->length - char_offset);
- }
-
- if (hide)
- memset(text_box->text + char_offset, '*', utf8_len);
- else
- memcpy(text_box->text + char_offset, utf8, utf8_len);
- text_box->length += utf8_len;
-
- /* nothing should assume that the text is terminated,
- * but just in case */
- text_box->text[text_box->length] = 0;
-
- text_box->width = UNKNOWN_WIDTH;
-
- return true;
-}
-
-/**
- * Calculates the form_offset from the box_offset
- *
- * \param input The root box containing both the textbox and gadget
- * \param text_box The textbox containing the caret
- * \param char_offset The caret offset within text_box
- * \return the translated form_offset
- */
-
-static size_t textinput_get_form_offset(struct box* input, struct box* text_box,
- size_t char_offset)
-{
- int uchars;
- unsigned int offset;
-
- for (uchars = 0, offset = 0; offset < char_offset; uchars++) {
- if ((text_box->text[offset] & 0x80) == 0x00) {
- offset++;
- continue;
- }
- assert((text_box->text[offset] & 0xC0) == 0xC0);
- for (++offset; offset < char_offset &&
- (text_box->text[offset] & 0xC0) == 0x80;
- offset++)
- /* do nothing */;
- }
- /* uchars is the number of real Unicode characters at the left
- * side of the caret.
- */
- for (offset = 0; uchars > 0 && offset < input->gadget->length;
- uchars--) {
- if ((input->gadget->value[offset] & 0x80) == 0x00) {
- offset++;
- continue;
- }
- assert((input->gadget->value[offset] & 0xC0) == 0xC0);
- for (++offset; offset < input->gadget->length &&
- (input->gadget->value[offset] & 0xC0) == 0x80;
- offset++)
- /* do nothing */;
- }
- assert(uchars == 0);
- return offset;
-}
-
-
-/**
- * Delete a number of chars from a text box
- *
- * \param c html content
- * \param text_box text box
- * \param char_offset offset within text box (bytes) of first char to delete
- * \param utf8_len length (bytes) of chars to be deleted
- * \return true on success, false otherwise
- *
- * ::char_offset and ::utf8_len are only considered when there is no selection.
- * If there is a selection, the entire selected area is deleted.
- */
-
-bool textinput_textbox_delete(struct content *c, struct box *text_box,
- unsigned char_offset, unsigned utf8_len)
-{
- html_content *html = (html_content *)c;
- unsigned next_offset = char_offset + utf8_len;
- struct box *form = text_box->parent->parent;
-
- if (html->bw && html->sel.defined) {
- textinput_delete_selection(c, &html->sel);
- return true;
- }
-
- /* delete from form gadget (text and password inputs only) */
- if (form->gadget && (form->gadget->type == GADGET_TEXTBOX ||
- form->gadget->type == GADGET_PASSWORD) &&
- form->gadget->value) {
- size_t form_offset = textinput_get_form_offset(form, text_box,
- char_offset);
- size_t next_offset = textinput_get_form_offset(form, text_box,
- char_offset + utf8_len);
-
- memmove(form->gadget->value + form_offset,
- form->gadget->value + next_offset,
- form->gadget->length - next_offset);
- form->gadget->length -= (next_offset - form_offset);
- form->gadget->value[form->gadget->length] = 0;
- }
-
- /* delete from visible textbox */
- if (next_offset <= text_box->length + SPACE_LEN(text_box)) {
- /* handle removal of trailing space */
- if (text_box->space != 0 && next_offset > text_box->length) {
- if (char_offset > 0) {
- /* is the trailing character still a space? */
- int tmp = utf8_prev(text_box->text, char_offset);
- if (isspace(text_box->text[tmp]))
- char_offset = tmp;
- else
- text_box->space = 0;
- } else {
- text_box->space = 0;
- }
-
- text_box->length = char_offset;
- } else {
- memmove(text_box->text + char_offset,
- text_box->text + next_offset,
- text_box->length - next_offset);
- text_box->length -= utf8_len;
- }
-
- /* nothing should assume that the text is terminated,
- * but just in case */
- text_box->text[text_box->length] = 0;
-
- text_box->width = UNKNOWN_WIDTH;
-
- return true;
- }
-
- return false;
-}
-
-/**
- * Locate the first inline box at the start of this line
- *
- * \param text_box text box from which to start searching
- */
-
-static struct box *textinput_line_start(struct box *text_box)
-{
- while (text_box->prev && text_box->prev->type == BOX_TEXT)
- text_box = text_box->prev;
- return text_box;
-}
-
-
-/**
- * Locate the last inline box in this line
- *
- * \param text_box text box from which to start searching
- */
-
-static struct box *textinput_line_end(struct box *text_box)
-{
- while (text_box->next && text_box->next->type == BOX_TEXT)
- text_box = text_box->next;
- return text_box;
-}
-
-
-/**
- * Backtrack to the start of the previous line, if there is one.
- */
-
-static struct box *textinput_line_above(struct box *text_box)
-{
- struct box *prev;
-
- text_box = textinput_line_start(text_box);
-
- prev = text_box->prev;
- while (prev && prev->type == BOX_BR)
- prev = prev->prev;
-
- return prev ? textinput_line_start(prev) : text_box;
-}
-
-
-/**
- * Advance to the start of the next line, if there is one.
- */
-
-static struct box *textinput_line_below(struct box *text_box)
-{
- struct box *next;
-
- text_box = textinput_line_end(text_box);
-
- next = text_box->next;
- while (next && next->type == BOX_BR)
- next = next->next;
-
- return next ? next : text_box;
-}
-
-
-/**
- * Add some text to the buffer, optionally appending a trailing space.
- *
- * \param text text to be added
- * \param length length of text in bytes
- * \param space indicates whether a trailing space should be appended
- * \param fstyle The font style
- * \return true if successful
- */
-
-static bool textinput_add_to_buffer(const char *text, size_t length, bool space,
- const plot_font_style_t *fstyle)
-{
- size_t new_length = textinput_buffer.length + length + (space ? 1 : 0) + 1;
-
- if (new_length > textinput_buffer.buffer_len) {
- size_t new_alloc = new_length + (new_length / 4);
- char *new_buff;
-
- new_buff = realloc(textinput_buffer.buffer, new_alloc);
- if (new_buff == NULL)
- return false;
-
- textinput_buffer.buffer = new_buff;
- textinput_buffer.buffer_len = new_alloc;
- }
-
- memcpy(textinput_buffer.buffer + textinput_buffer.length, text, length);
- textinput_buffer.length += length;
-
- if (space)
- textinput_buffer.buffer[textinput_buffer.length++] = ' ';
-
- textinput_buffer.buffer[textinput_buffer.length] = '\0';
-
- return true;
-}
-
-
-/**
- * Empty the buffer, called prior to textinput_add_to_buffer sequence
- *
- * \return true iff successful
- */
-
-static bool textinput_empty_buffer(void)
-{
- const size_t init_size = 1024;
-
- if (textinput_buffer.buffer_len == 0) {
- textinput_buffer.buffer = malloc(init_size);
- if (textinput_buffer.buffer == NULL)
- return false;
-
- textinput_buffer.buffer_len = init_size;
- }
-
- textinput_buffer.length = 0;
-
- return true;
-}
-
-
-/**
- * Cut a range of text from a text box,
- * possibly placing it on the global clipboard.
- *
- * \param c html content
- * \param start_box text box at start of range
- * \param start_idx index (bytes) within start box
- * \param end_box text box at end of range
- * \param end_idx index (bytes) within end box
- * \param clipboard whether to place text on the clipboard
- * \return true iff successful
- */
-
-static bool textinput_textarea_cut(struct content *c,
- struct box *start_box, unsigned start_idx,
- struct box *end_box, unsigned end_idx,
- bool clipboard)
-{
- struct box *box = start_box;
- bool success = true;
- bool del = false; /* caller expects start_box to persist */
-
- if (textinput_empty_buffer() == false) {
- return false;
- }
-
- while (box && box != end_box) {
- /* read before deletion, in case the whole box goes */
- struct box *next = box->next;
-
- if (box->type == BOX_BR) {
- if (clipboard && !textinput_add_to_buffer("\n", 1,
- false, plot_style_font)) {
- return false;
- }
- box_unlink_and_free(box);
- } else {
- /* append box text to clipboard and then delete it */
- if (clipboard &&
- !textinput_add_to_buffer(box->text + start_idx,
- box->length - start_idx,
- SPACE_LEN(box), plot_style_font)) {
- return false;
- }
-
- if (del) {
- if (!textinput_delete_handler(c, box,
- start_idx,
- (box->length + SPACE_LEN(box)) -
- start_idx) && clipboard) {
- return false;
- }
- } else {
- textinput_textbox_delete(c, box, start_idx,
- (box->length + SPACE_LEN(box)) -
- start_idx);
- }
- }
-
- del = true;
- start_idx = 0;
- box = next;
- }
-
- /* and the last box */
- if (box) {
- if (clipboard && !textinput_add_to_buffer(box->text + start_idx,
- end_idx - start_idx, end_idx > box->length,
- plot_style_font)) {
- success = false;
- } else {
- if (del) {
- if (!textinput_delete_handler(c, box,
- start_idx, end_idx - start_idx))
- success = false;
- } else {
- textinput_textbox_delete(c, box, start_idx,
- end_idx - start_idx);
- }
- }
- }
-
- if (clipboard) {
- gui_set_clipboard(textinput_buffer.buffer,
- textinput_buffer.length, NULL, 0);
- }
-
- return true;
-}
-
-
-/**
- * Break a text box into two
- *
- * \param c html content
- * \param text_box text box to be split
- * \param char_offset offset (in bytes) at which text box is to be split
- */
-
-static struct box *textinput_textarea_insert_break(struct content *c,
- struct box *text_box, size_t char_offset)
-{
- html_content *html = (html_content *)c;
- struct box *new_br, *new_text;
- char *text;
-
- text = talloc_array(html->bctx, char, text_box->length + 1);
- if (!text) {
- warn_user("NoMemory", 0);
- return NULL;
- }
-
- new_br = box_create(NULL, text_box->style, false, 0, 0, text_box->title,
- 0, html->bctx);
- new_text = talloc(html->bctx, struct box);
- if (!new_text) {
- warn_user("NoMemory", 0);
- return NULL;
- }
-
- new_br->type = BOX_BR;
- box_insert_sibling(text_box, new_br);
-
- memcpy(new_text, text_box, sizeof (struct box));
- new_text->flags |= CLONE;
- new_text->text = text;
- memcpy(new_text->text, text_box->text + char_offset,
- text_box->length - char_offset);
- new_text->length = text_box->length - char_offset;
- text_box->length = char_offset;
- text_box->width = new_text->width = UNKNOWN_WIDTH;
- box_insert_sibling(new_br, new_text);
-
- return new_text;
-}
-
-
-/**
- * Reflow textarea preserving width and height
- *
- * \param c html content
- * \param textarea text area box
- * \param inline_container container holding text box
- */
-
-static void textinput_textarea_reflow(struct content *c,
- struct box *textarea, struct box *inline_container)
-{
- int width = textarea->width;
- int height = textarea->height;
-
- assert(c != NULL);
-
- if (!layout_inline_container(inline_container, width,
- textarea, 0, 0, (struct html_content *) c))
- warn_user("NoMemory", 0);
- textarea->width = width;
- textarea->height = height;
- layout_calculate_descendant_bboxes(textarea);
- box_handle_scrollbars(c, textarea,
- box_hscrollbar_present(textarea),
- box_vscrollbar_present(textarea));
-}
-
-
-/**
- * Move to the start of the word containing the given character position,
- * or the start of the preceding word if already at the start of this one.
- *
- * \param text UTF-8 text string
- * \param poffset offset of caret within string (updated on exit)
- * \param pchars receives the number of characters skipped
- * \return true iff the start of a word was found before/at the string start
- */
-
-static bool textinput_word_left(const char *text,
- size_t *poffset, size_t *pchars)
-{
- size_t offset = *poffset;
- bool success = false;
- size_t nchars = 0;
-
- /* Skip any spaces immediately prior to the offset */
- while (offset > 0) {
- offset = utf8_prev(text, offset);
- nchars++;
- if (!isspace(text[offset])) break;
- }
-
- /* Now skip all non-space characters */
- while (offset > 0) {
- size_t prev = utf8_prev(text, offset);
- success = true;
- if (isspace(text[prev]))
- break;
- offset = prev;
- nchars++;
- }
-
- *poffset = offset;
- if (pchars) *pchars = nchars;
-
- return success;
-}
-
-
-/**
- * Move to the start of the first word following the given character position.
- *
- * \param text UTF-8 text string
- * \param len length of string in bytes
- * \param poffset offset of caret within string (updated on exit)
- * \param pchars receives the number of characters skipped
- * \return true iff the start of a word was found before the string end
- */
-
-static bool textinput_word_right(const char *text, size_t len,
- size_t *poffset, size_t *pchars)
-{
- size_t offset = *poffset;
- bool success = false;
- size_t nchars = 0;
-
- /* Skip all non-space characters after the offset */
- while (offset < len) {
- if (isspace(text[offset])) break;
- offset = utf8_next(text, len, offset);
- nchars++;
- }
-
- /* Now skip all space characters */
- while (offset < len) {
- offset = utf8_next(text, len, offset);
- nchars++;
- if (offset < len && !isspace(text[offset])) {
- success = true;
- break;
- }
- }
-
- *poffset = offset;
- if (pchars) *pchars = nchars;
-
- return success;
-}
-
-/**
- * Adjust scroll offsets so that the caret is visible
- *
- * \param c html content where click ocurred
- * \param textarea textarea box
- * \return true if a change in scroll offsets has occurred
-*/
-
-static bool textinput_ensure_caret_visible(struct content *c,
- struct box *textarea)
-{
- html_content *html = (html_content *)c;
- int cx, cy;
- int scrollx, scrolly;
-
- assert(textarea->gadget);
-
- scrollx = scrollbar_get_offset(textarea->scroll_x);
- scrolly = scrollbar_get_offset(textarea->scroll_y);
-
- /* Calculate the caret coordinates */
- cx = textarea->gadget->caret_pixel_offset +
- textarea->gadget->caret_text_box->x;
- cy = textarea->gadget->caret_text_box->y;
-
- /* Ensure they are visible */
- if (textarea->scroll_x == NULL) {
- scrollx = 0;
- } else if (cx - scrollbar_get_offset(textarea->scroll_x) < 0) {
- scrollx = cx;
- } else if (cx > scrollbar_get_offset(textarea->scroll_x) +
- textarea->width) {
- scrollx = cx - textarea->width;
- }
-
- if (textarea->scroll_y == NULL) {
- scrolly = 0;
- } else if (cy - scrollbar_get_offset(textarea->scroll_y) < 0) {
- scrolly = cy;
- } else if (cy + textarea->gadget->caret_text_box->height >
- scrollbar_get_offset(textarea->scroll_y) +
- textarea->height) {
- scrolly = (cy + textarea->gadget->caret_text_box->height) -
- textarea->height;
- }
-
- if ((scrollx == scrollbar_get_offset(textarea->scroll_x)) &&
- (scrolly == scrollbar_get_offset(textarea->scroll_y)))
- return false;
-
- if (textarea->scroll_x != NULL) {
- html->scrollbar = textarea->scroll_x;
- scrollbar_set(textarea->scroll_x, scrollx, false);
- html->scrollbar = NULL;
- }
- if (textarea->scroll_y != NULL) {
- html->scrollbar = textarea->scroll_x;
- scrollbar_set(textarea->scroll_y, scrolly, false);
- html->scrollbar = NULL;
- }
-
- return true;
-}
-
-
-/**
- * Paste a block of text into a textarea at the
- * current caret position.
- *
- * \param bw browser window
- * \param utf8 pointer to block of text
- * \param utf8_len length (bytes) of text block
- * \param last true iff this is the last chunk (update screen too)
- * \param p1 pointer to textarea
- * \param p2 html content with the text area box
- * \return true iff successful
- */
-
-bool textinput_textarea_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last,
- void *p1, void *p2)
-{
- struct box *textarea = p1;
- struct content *c = p2;
- struct box *inline_container =
- textarea->gadget->caret_inline_container;
- struct box *text_box = textarea->gadget->caret_text_box;
- size_t char_offset = textarea->gadget->caret_box_offset;
- int pixel_offset = textarea->gadget->caret_pixel_offset;
- const char *ep = utf8 + utf8_len;
- const char *p = utf8;
- bool success = true;
- bool update = last;
-
- while (p < ep) {
- struct box *new_text;
- unsigned utf8_len;
-
- while (p < ep) {
- if (*p == '\n' || *p == '\r') break;
- p++;
- }
-
- utf8_len = p - utf8;
- if (!textinput_textbox_insert(c, text_box, char_offset,
- utf8, utf8_len))
- return false;
-
- char_offset += utf8_len;
- if (p == ep)
- break;
-
- new_text = textinput_textarea_insert_break(c, text_box,
- char_offset);
- if (!new_text) {
- /* we still need to update the screen */
- update = true;
- success = false;
- break;
- }
-
- /* place caret at start of new text box */
- text_box = new_text;
- char_offset = 0;
-
- /* handle CR/LF and LF/CR terminations */
- if ((*p == '\n' && p[1] == '\r') ||
- (*p == '\r' && p[1] == '\n'))
- p++;
- utf8 = ++p;
- }
-
-// textarea->gadget->caret_inline_container = inline_container;
- textarea->gadget->caret_text_box = text_box;
- textarea->gadget->caret_box_offset = char_offset;
-
- if (update) {
- int box_x, box_y;
- plot_font_style_t fstyle;
-
- /* reflow textarea preserving width and height */
- textinput_textarea_reflow(c, textarea, inline_container);
- /* reflowing may have broken our caret offset
- * this bit should hopefully continue to work if
- * textarea_reflow is fixed to update the caret itself */
- char_offset = textarea->gadget->caret_box_offset;
- text_box = textarea->gadget->caret_text_box;
-
- while ((char_offset > text_box->length + SPACE_LEN(text_box)) &&
- (text_box->next) &&
- (text_box->next->type == BOX_TEXT)) {
-#ifdef TEXTINPUT_DEBUG
- LOG(("Caret out of range: Was %d in boxlen %d "
- "space %d", char_offset,
- text_box->length, SPACE_LEN(text_box)));
-#endif
- char_offset -= text_box->length + SPACE_LEN(text_box);
- text_box = text_box->next;
- }
-
- /* not sure if this will happen or not...
- * but won't stick an assert here as we can recover from it */
- if (char_offset > text_box->length) {
-#ifdef TEXTINPUT_DEBUG
- LOG(("Caret moved beyond end of line: "
- "Was %d in boxlen %d", char_offset,
- text_box->length));
-#endif
- char_offset = text_box->length;
- }
-
- textarea->gadget->caret_text_box = text_box;
- textarea->gadget->caret_box_offset = char_offset;
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- nsfont.font_width(&fstyle, text_box->text,
- char_offset, &pixel_offset);
-
- textarea->gadget->caret_pixel_offset = pixel_offset;
-
- box_coords(textarea, &box_x, &box_y);
- box_x += scrollbar_get_offset(textarea->scroll_x);
- box_y += scrollbar_get_offset(textarea->scroll_y);
- textinput_ensure_caret_visible(c, textarea);
- box_x -= scrollbar_get_offset(textarea->scroll_x);
- box_y -= scrollbar_get_offset(textarea->scroll_y);
-
- browser_window_place_caret(bw,
- box_x + inline_container->x + text_box->x +
- pixel_offset,
- box_y + inline_container->y + text_box->y,
- text_box->height,
- textinput_textarea_callback,
- textinput_textarea_paste_text,
- textinput_textarea_move_caret,
- textarea, c);
-
- html__redraw_a_box((html_content *)c, textarea);
- }
-
- return success;
-}
-
-
-/**
- * Move caret to new position after reformatting
- *
- * \param bw browser window
- * \param p1 pointer textarea box
- * \param p2 html content with the text area box
- * \return none
- */
-
-void textinput_textarea_move_caret(struct browser_window *bw,
- void *p1, void *p2)
-{
- struct box *textarea = p1;
- struct content *c = p2;
- struct box *inline_container = textarea->gadget->caret_inline_container;
- struct box *text_box = textarea->gadget->caret_text_box;
- size_t char_offset = textarea->gadget->caret_box_offset;
- int pixel_offset;
- int box_x, box_y;
- plot_font_style_t fstyle;
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- box_coords(textarea, &box_x, &box_y);
- box_x -= scrollbar_get_offset(textarea->scroll_x);
- box_y -= scrollbar_get_offset(textarea->scroll_y);
-
- nsfont.font_width(&fstyle, text_box->text,
- char_offset, &pixel_offset);
-
- browser_window_place_caret(bw,
- box_x + inline_container->x + text_box->x +
- pixel_offset,
- box_y + inline_container->y + text_box->y,
- text_box->height,
- textinput_textarea_callback,
- textinput_textarea_paste_text,
- textinput_textarea_move_caret,
- textarea, c);
-}
-
-
-/**
- * Update display to reflect modified input field
- *
- * \param bw browser window
- * \param input input field
- * \param form_offset
- * \param box_offset offset of caret within text box
- * \param to_textarea caret is to be moved to a textarea
- * \param redraw force redraw even if field hasn't scrolled
- */
-
-static void textinput_input_update_display(struct content *c, struct box *input,
- unsigned box_offset, bool to_textarea, bool redraw)
-{
- struct box *text_box = input->children->children;
- unsigned pixel_offset;
- int box_x, box_y;
- int dx;
- plot_font_style_t fstyle;
- html_content *html = (html_content *)c;
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- if (redraw)
- nsfont.font_width(&fstyle, text_box->text, text_box->length,
- &text_box->width);
-
- box_coords(input, &box_x, &box_y);
-
- nsfont.font_width(&fstyle, text_box->text, box_offset,
- (int *) &pixel_offset);
-
- /* Shift text box horizontally, so caret is visible */
- dx = text_box->x;
- text_box->x = 0;
- if (input->width < text_box->width &&
- input->width / 2 < (int) pixel_offset) {
- /* Make caret appear in centre of text input */
- text_box->x = input->width / 2 - pixel_offset;
- /* Clamp if we've shifted too far left */
- if (text_box->x < input->width - text_box->width)
- text_box->x = input->width - text_box->width;
- }
- dx -= text_box->x;
- input->gadget->caret_pixel_offset = pixel_offset;
-
- if (to_textarea) {
- /* moving to textarea so need to set these up */
- input->gadget->caret_inline_container = input->children;
- input->gadget->caret_text_box = text_box;
- }
-
- input->gadget->caret_box_offset = box_offset;
-
- browser_window_place_caret(html->bw,
- box_x + input->children->x +
- text_box->x + pixel_offset,
- box_y + input->children->y + text_box->y,
- text_box->height,
- /* use the appropriate callback */
- to_textarea ? textinput_textarea_callback
- : textinput_input_callback,
- to_textarea ? textinput_textarea_paste_text
- : textinput_input_paste_text,
- to_textarea ? textinput_textarea_move_caret
- : textinput_input_move_caret,
- input, c);
-
- if (dx || redraw)
- html__redraw_a_box(html, input);
-}
-
-
-/**
- * Key press callback for text areas.
- *
- * \param bw The browser window containing the text area
- * \param key The ucs4 character codepoint
- * \param p1 The text area box
- * \param p2 The html content with the text area box
- * \return true if the keypress is dealt with, false otherwise. It can
- * return true even if it ran out of memory; this just means that
- * it would have claimed it if it could.
- */
-bool textinput_textarea_callback(struct browser_window *bw, uint32_t key,
- void *p1, void *p2)
-{
- struct box *textarea = p1;
- struct content *c = p2;
- html_content *html = (html_content *)c;
- struct box *inline_container =
- textarea->gadget->caret_inline_container;
- struct box *text_box = textarea->gadget->caret_text_box;
- struct box *new_text;
- size_t char_offset = textarea->gadget->caret_box_offset;
- int pixel_offset = textarea->gadget->caret_pixel_offset;
- int box_x, box_y;
- char utf8[6];
- unsigned int utf8_len;
- bool scrolled, reflow = false;
- bool selection_exists = html->sel.defined;
- plot_font_style_t fstyle;
-
- /* box_dump(textarea, 0); */
-#ifdef TEXTINPUT_DEBUG
- LOG(("key %i at %i in '%.*s'", key, char_offset,
- (int) text_box->length, text_box->text));
-#endif
-
- box_coords(textarea, &box_x, &box_y);
- box_x -= scrollbar_get_offset(textarea->scroll_x);
- box_y -= scrollbar_get_offset(textarea->scroll_y);
-
- if (!(key <= 0x001F || (0x007F <= key && key <= 0x009F))) {
- /* normal character insertion */
- utf8_len = utf8_from_ucs4(key, utf8);
-
- if (!textinput_textbox_insert(c, text_box, char_offset,
- utf8, utf8_len))
- return true;
-
- char_offset += utf8_len;
- reflow = true;
-
- } else switch (key) {
- case KEY_DELETE_LEFT:
- if (selection_exists) {
- /* Have a selection; delete it */
- textinput_textbox_delete(c, text_box, 0, 0);
- } else if (char_offset == 0) {
- /* at the start of a text box */
- struct box *prev;
-
- if (text_box->prev && text_box->prev->type == BOX_BR) {
- /* previous box is BR: remove it */
- box_unlink_and_free(text_box->prev);
- }
-
- /* This needs to be after the BR removal, as that may
- * result in no previous box existing */
- if (!text_box->prev)
- /* at very beginning of text area: ignore */
- return true;
-
- /* delete space by merging with previous text box */
- prev = text_box->prev;
- assert(prev->type == BOX_TEXT);
- assert(prev->text);
-
- char_offset = prev->length; /* caret at join */
-
- if (!textinput_textbox_insert(c, prev, prev->length,
- text_box->text, text_box->length))
- return true;
-
- box_unlink_and_free(text_box);
-
- /* place caret at join (see above) */
- text_box = prev;
-
- } else {
- /* delete a character */
- size_t prev_offset = char_offset;
- size_t new_offset =
- utf8_prev(text_box->text, char_offset);
-
- if (textinput_textbox_delete(c, text_box, new_offset,
- prev_offset - new_offset))
- char_offset = new_offset;
- }
- reflow = true;
- break;
-
- case KEY_DELETE_LINE_START:
- {
- struct box *start_box = textinput_line_start(text_box);
-
- /* Clear the selection, if one exists */
- if (selection_exists)
- selection_clear(&html->sel, false);
-
- textinput_textarea_cut(c, start_box, 0, text_box,
- char_offset, false);
- text_box = start_box;
- char_offset = 0;
- reflow = true;
- }
- break;
-
- case KEY_DELETE_LINE_END:
- {
- struct box *end_box = textinput_line_end(text_box);
-
- /* Clear the selection, if one exists */
- if (selection_exists)
- selection_clear(&html->sel, false);
-
- if (end_box != text_box ||
- char_offset < text_box->length + SPACE_LEN(text_box)) {
- /* there's something at the end of the line to delete */
- textinput_textarea_cut(c, text_box,
- char_offset, end_box,
- end_box->length + SPACE_LEN(end_box),
- false);
- reflow = true;
- break;
- }
- }
- /* no break */
- case KEY_DELETE_RIGHT: /* delete to right */
- if (selection_exists) {
- /* Delete selection */
- textinput_textbox_delete(c, text_box, 0, 0);
- } else if (char_offset >= text_box->length) {
- /* at the end of a text box */
- struct box *next;
-
- if (text_box->next && text_box->next->type == BOX_BR) {
- /* next box is a BR: remove it */
- box_unlink_and_free(text_box->next);
- }
-
- /* This test is after the BR removal, as that may
- * result in no subsequent box being present */
- if (!text_box->next)
- /* at very end of text area: ignore */
- return true;
-
- /* delete space by merging with next text box */
-
- next = text_box->next;
- assert(next->type == BOX_TEXT);
- assert(next->text);
-
- if (!textinput_textbox_insert(c, text_box,
- text_box->length,
- next->text, next->length))
- return true;
-
- box_unlink_and_free(next);
-
- /* leave caret at join */
- } else {
- /* delete a character */
- size_t next_offset = utf8_next(text_box->text,
- text_box->length, char_offset);
-
- textinput_textbox_delete(c, text_box, char_offset,
- next_offset - char_offset);
- }
- reflow = true;
- break;
-
- case KEY_NL:
- case KEY_CR: /* paragraph break */
- if (selection_exists) {
- /* If we have a selection, then delete it,
- * so it's replaced by the break */
- textinput_textbox_delete(c, text_box, 0, 0);
- }
-
- new_text = textinput_textarea_insert_break(c, text_box,
- char_offset);
- if (!new_text)
- return true;
-
- /* place caret at start of new text box */
- text_box = new_text;
- char_offset = 0;
-
- reflow = true;
- break;
-
- case KEY_CUT_LINE:
- {
- struct box *start_box = textinput_line_start(text_box);
- struct box *end_box = textinput_line_end(text_box);
-
- /* Clear the selection, if one exists */
- if (selection_exists)
- selection_clear(&html->sel, false);
-
- textinput_textarea_cut(c, start_box, 0, end_box,
- end_box->length, false);
-
- text_box = start_box;
- char_offset = 0;
- reflow = true;
- }
- break;
-
- case KEY_PASTE:
- {
- char *buff = NULL;
- size_t buff_len;
- bool success;
-
- gui_get_clipboard(&buff, &buff_len);
- if (buff == NULL)
- return false;
-
- success = browser_window_paste_text(bw, buff, buff_len, true);
- free(buff);
-
- return success;
- }
-
- case KEY_CUT_SELECTION:
- {
- size_t start_idx, end_idx;
- struct box *start_box =
- selection_get_start(&html->sel, &start_idx);
- struct box *end_box = selection_get_end(&html->sel, &end_idx);
-
- if (start_box && end_box) {
- selection_clear(&html->sel, false);
- textinput_textarea_cut(c, start_box, start_idx,
- end_box, end_idx, true);
- text_box = start_box;
- char_offset = start_idx;
- reflow = true;
- }
- }
- break;
-
- case KEY_RIGHT:
- if (selection_exists) {
- /* In selection, move caret to end */
- text_box = selection_get_end(&html->sel, &char_offset);
- } else if (char_offset < text_box->length) {
- /* Within-box movement */
- char_offset = utf8_next(text_box->text,
- text_box->length, char_offset);
- } else {
- /* Between-box movement */
- if (!text_box->next)
- /* at end of text area: ignore */
- return true;
-
- text_box = text_box->next;
- if (text_box->type == BOX_BR)
- text_box = text_box->next;
- char_offset = 0;
- }
- break;
-
- case KEY_LEFT:
- if (selection_exists) {
- /* In selection, move caret to start */
- text_box = selection_get_start(&html->sel, &char_offset);
- } else if (char_offset > 0) {
- /* Within-box movement */
- char_offset = utf8_prev(text_box->text, char_offset);
- } else {
- /* Between-box movement */
- if (!text_box->prev)
- /* at start of text area: ignore */
- return true;
-
- text_box = text_box->prev;
- if (text_box->type == BOX_BR)
- text_box = text_box->prev;
- char_offset = text_box->length;
- }
- break;
-
- case KEY_UP:
- selection_clear(&html->sel, true);
- textinput_textarea_click(c, BROWSER_MOUSE_CLICK_1,
- textarea,
- box_x, box_y,
- text_box->x + pixel_offset,
- inline_container->y + text_box->y - 1);
- return true;
-
- case KEY_DOWN:
- selection_clear(&html->sel, true);
- textinput_textarea_click(c, BROWSER_MOUSE_CLICK_1,
- textarea,
- box_x, box_y,
- text_box->x + pixel_offset,
- inline_container->y + text_box->y +
- text_box->height + 1);
- return true;
-
- case KEY_LINE_START:
- text_box = textinput_line_start(text_box);
- char_offset = 0;
- break;
-
- case KEY_LINE_END:
- text_box = textinput_line_end(text_box);
- char_offset = text_box->length;
- break;
-
- case KEY_TEXT_START:
- assert(text_box->parent);
-
- /* place caret at start of first box */
- text_box = text_box->parent->children;
- char_offset = 0;
- break;
-
- case KEY_TEXT_END:
- assert(text_box->parent);
-
- /* place caret at end of last box */
- text_box = text_box->parent->last;
- char_offset = text_box->length;
- break;
-
- case KEY_WORD_LEFT:
- {
- bool start_of_word;
- /* if there is a selection, caret should stay at beginning */
- if (selection_exists)
- break;
-
- start_of_word = (char_offset <= 0 ||
- isspace(text_box->text[char_offset - 1]));
-
- while (!textinput_word_left(text_box->text,
- &char_offset, NULL)) {
- struct box *prev = NULL;
-
- assert(char_offset == 0);
-
- if (start_of_word) {
- /* find the preceding non-BR box */
- prev = text_box->prev;
- if (prev && prev->type == BOX_BR)
- prev = prev->prev;
- }
-
- if (!prev) {
- /* just stay at the start of this box */
- break;
- }
-
- assert(prev->type == BOX_TEXT);
-
- text_box = prev;
- char_offset = prev->length;
- }
- }
- break;
-
- case KEY_WORD_RIGHT:
- {
- bool in_word;
- /* if there is a selection, caret should move to the end */
- if (selection_exists) {
- text_box = selection_get_end(&html->sel, &char_offset);
- break;
- }
-
- in_word = (char_offset < text_box->length &&
- !isspace(text_box->text[char_offset]));
-
- while (!textinput_word_right(text_box->text, text_box->length,
- &char_offset, NULL)) {
- struct box *next = text_box->next;
-
- /* find the next non-BR box */
- if (next && next->type == BOX_BR)
- next = next->next;
-
- if (!next) {
- /* just stay at the end of this box */
- char_offset = text_box->length;
- break;
- }
-
- assert(next->type == BOX_TEXT);
-
- text_box = next;
- char_offset = 0;
-
- if (in_word && text_box->length > 0 &&
- !isspace(text_box->text[0])) {
- /* just stay at the start of this box */
- break;
- }
- }
- }
- break;
-
- case KEY_PAGE_UP:
- {
- int nlines = (textarea->height / text_box->height) - 1;
-
- while (nlines-- > 0)
- text_box = textinput_line_above(text_box);
-
- if (char_offset > text_box->length)
- char_offset = text_box->length;
- }
- break;
-
- case KEY_PAGE_DOWN:
- {
- int nlines = (textarea->height / text_box->height) - 1;
-
- while (nlines-- > 0)
- text_box = textinput_line_below(text_box);
-
- /* vague attempt to keep the caret at the same horizontal
- * position, given that the code currently cannot support it
- * being beyond the end of a line */
- if (char_offset > text_box->length)
- char_offset = text_box->length;
- }
- break;
-
- default:
- return false;
- }
-
- /*
- box_dump(textarea, 0);
- for (struct box *t = inline_container->children; t; t = t->next) {
- assert(t->type == BOX_TEXT);
- assert(t->text);
- assert(t->parent == inline_container);
- if (t->next) assert(t->next->prev == t);
- if (t->prev) assert(t->prev->next == t);
- if (!t->next) {
- assert(inline_container->last == t);
- break;
- }
- if (t->next->type == BOX_BR) {
- assert(t->next->next);
- t = t->next;
- }
- } */
-
- if (reflow)
- textinput_textarea_reflow(c, textarea, inline_container);
-
- if (text_box->length + SPACE_LEN(text_box) <= char_offset) {
- if (text_box->next && text_box->next->type == BOX_TEXT) {
- /* the text box has been split when reflowing and
- the caret is in the second part */
- char_offset -= (text_box->length + SPACE_LEN(text_box));
- text_box = text_box->next;
- assert(text_box);
- assert(char_offset <= text_box->length);
- /* Scroll back to the left */
- if (textarea->scroll_x != NULL) {
- box_x += scrollbar_get_offset(
- textarea->scroll_x);
- scrollbar_set(textarea->scroll_x, 0, false);
- }
- } else {
- assert(!text_box->next ||
- (text_box->next &&
- text_box->next->type == BOX_BR));
-
- char_offset = text_box->length + SPACE_LEN(text_box);
- }
- }
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- nsfont.font_width(&fstyle, text_box->text, char_offset, &pixel_offset);
-
- selection_clear(&html->sel, true);
-
- textarea->gadget->caret_inline_container = inline_container;
- textarea->gadget->caret_text_box = text_box;
- textarea->gadget->caret_box_offset = char_offset;
- textarea->gadget->caret_pixel_offset = pixel_offset;
-
- box_x += scrollbar_get_offset(textarea->scroll_x);
- box_y += scrollbar_get_offset(textarea->scroll_y);
- scrolled = textinput_ensure_caret_visible(c, textarea);
- box_x -= scrollbar_get_offset(textarea->scroll_x);
- box_y -= scrollbar_get_offset(textarea->scroll_y);
-
- browser_window_place_caret(bw,
- box_x + inline_container->x + text_box->x +
- pixel_offset,
- box_y + inline_container->y + text_box->y,
- text_box->height,
- textinput_textarea_callback,
- textinput_textarea_paste_text,
- textinput_textarea_move_caret,
- textarea, c);
-
- if (scrolled || reflow)
- html__redraw_a_box(html, textarea);
-
- return true;
-}
-
-
-/**
- * Handle clicks in a text area by placing the caret.
- *
- * \param c html content where click occurred
- * \param mouse state of mouse buttons and modifier keys
- * \param textarea textarea box
- * \param box_x position of textarea in global document coordinates
- * \param box_y position of textarea in global document coordinates
- * \param x coordinate of click relative to textarea
- * \param y coordinate of click relative to textarea
- */
-void textinput_textarea_click(struct content *c, browser_mouse_state mouse,
- struct box *textarea, int box_x, int box_y, int x, int y)
-{
- /* A textarea is an INLINE_BLOCK containing a single
- * INLINE_CONTAINER, which contains the text as runs of TEXT
- * separated by BR. There is at least one TEXT. The first and
- * last boxes are TEXT. Consecutive BR may not be present. These
- * constraints are satisfied by using a 0-length TEXT for blank
- * lines. */
-
- int char_offset = 0, pixel_offset = 0;
- struct box *inline_container = textarea->children;
- struct box *text_box;
- bool scrolled;
- html_content *html = (html_content *)c;
-
- text_box = textinput_textarea_get_position(textarea, x, y,
- &char_offset, &pixel_offset);
-
- textarea->gadget->caret_inline_container = inline_container;
- textarea->gadget->caret_text_box = text_box;
- textarea->gadget->caret_box_offset = char_offset;
- textarea->gadget->caret_pixel_offset = pixel_offset;
-
- box_x += scrollbar_get_offset(textarea->scroll_x);
- box_y += scrollbar_get_offset(textarea->scroll_y);
- scrolled = textinput_ensure_caret_visible(c, textarea);
- box_x -= scrollbar_get_offset(textarea->scroll_x);
- box_y -= scrollbar_get_offset(textarea->scroll_y);
-
- browser_window_place_caret(html->bw,
- box_x + inline_container->x + text_box->x +
- pixel_offset,
- box_y + inline_container->y + text_box->y,
- text_box->height,
- textinput_textarea_callback,
- textinput_textarea_paste_text,
- textinput_textarea_move_caret,
- textarea, c);
-
- if (scrolled)
- html__redraw_a_box(html, textarea);
-}
-
-
-/**
- * Paste a block of text into an input field at the caret position.
- *
- * \param bw browser window
- * \param utf8 pointer to block of text
- * \param utf8_len length (bytes) of text block
- * \param last true iff this is the last chunk (update screen too)
- * \param p1 pointer to input box
- * \param p2 html content with the input box
- * \return true iff successful
- */
-
-bool textinput_input_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last,
- void *p1, void *p2)
-{
- struct box *input = p1;
- struct content *c = p2;
- struct box *text_box = input->children->children;
- size_t box_offset = input->gadget->caret_box_offset;
- unsigned int nchars = utf8_length(input->gadget->value);
- const char *ep = utf8 + utf8_len;
- const char *p = utf8;
- bool success = true;
- bool update = last;
-
- /* keep adding chars until we've run out or would exceed
- the maximum length of the field (in which we silently
- ignore all others)
- */
- while (p < ep && nchars < input->gadget->maxlength) {
- char buf[80 + 6];
- int nbytes = 0;
-
- /* how many more chars can we insert in one go? */
- while (p < ep && nbytes < 80 &&
- nchars < input->gadget->maxlength &&
- *p != '\n' && *p != '\r') {
- unsigned len = utf8_next(p, ep - p, 0);
- if (*p == ' ')
- nbytes += utf8_from_ucs4(160, &buf[nbytes]);
- else {
- memcpy(&buf[nbytes], p, len);
- nbytes += len;
- }
-
- p += len;
- nchars++;
- }
-
- if (!textinput_textbox_insert(c, text_box, box_offset,
- buf, nbytes)) {
- /* we still need to update the screen */
- update = true;
- success = false;
- break;
- }
- box_offset += nbytes;
- /* Keep caret_form_offset in sync -- textbox_insert uses this
- * to determine where to insert into the gadget's value */
- input->gadget->caret_form_offset += nbytes;
-
- /* handle CR/LF and LF/CR terminations */
- if (*p == '\n') {
- p++;
- if (*p == '\r') p++;
- }
- else if (*p == '\r') {
- p++;
- if (*p == '\n') p++;
- }
- }
-
- if (update)
- textinput_input_update_display(c, input, box_offset,
- false, true);
-
- return success;
-}
-
-
-/**
- * Move caret to new position after reformatting
- *
- * \param bw browser window
- * \param p1 pointer to text input box
- * \param p2 html content with the input box
- * \return none
- */
-
-void textinput_input_move_caret(struct browser_window *bw,
- void *p1, void *p2)
-{
- struct box *input = (struct box *)p1;
- struct content *c = p2;
- struct box *text_box = input->children->children;
- unsigned int box_offset = input->gadget->caret_box_offset;
- int pixel_offset;
- int box_x, box_y;
- plot_font_style_t fstyle;
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- box_coords(input, &box_x, &box_y);
-
- nsfont.font_width(&fstyle, text_box->text, box_offset,
- &pixel_offset);
-
- browser_window_place_caret(bw,
- box_x + input->children->x +
- text_box->x + pixel_offset,
- box_y + input->children->y + text_box->y,
- text_box->height,
- textinput_input_callback,
- textinput_input_paste_text,
- textinput_input_move_caret,
- input, c);
-}
-
-/**
- * Key press callback for text or password input boxes.
- *
- * \param bw The browser window containing the input box
- * \param key The UCS4 character codepoint
- * \param p1 The input box
- * \param p2 The html content with the input box
- * \return true if the keypress is dealt with, false otherwise. It can
- * return true even if it ran out of memory; this just means that
- * it would have claimed it if it could.
- */
-bool textinput_input_callback(struct browser_window *bw, uint32_t key,
- void *p1, void *p2)
-{
- struct box *input = (struct box *)p1;
- struct content *c = p2;
- html_content *html = (html_content *)c;
- struct box *text_box = input->children->children;
- size_t box_offset = input->gadget->caret_box_offset;
- size_t end_offset;
- int box_x, box_y;
- struct form* form = input->gadget->form;
- bool changed = false;
- char utf8[6];
- unsigned int utf8_len;
- bool to_textarea = false;
- bool selection_exists = html->sel.defined;
-
- input->gadget->caret_form_offset =
- textinput_get_form_offset(input, text_box, box_offset);
-
- /* update the form offset */
- input->gadget->caret_form_offset =
- textinput_get_form_offset(input, text_box, box_offset);
-
- selection_get_end(&html->sel, &end_offset);
-
- box_coords(input, &box_x, &box_y);
-
- /* normal character insertion */
- if (!(key <= 0x001F || (0x007F <= key && key <= 0x009F))) {
- /* have we exceeded max length of input? */
- utf8_len = utf8_length(input->gadget->value);
- if (utf8_len >= input->gadget->maxlength)
- return true;
-
- utf8_len = utf8_from_ucs4(key, utf8);
-
- if (!textinput_textbox_insert(c, text_box, box_offset,
- utf8, utf8_len))
- return true;
-
- box_offset += utf8_len;
-
- changed = true;
-
- } else switch (key) {
- case KEY_DELETE_LEFT:
- {
- int prev_offset, new_offset;
-
- if (selection_exists) {
- textinput_textbox_delete(c, text_box, 0, 0);
- } else {
- /* Can't delete left from text box start */
- if (box_offset == 0)
- return true;
-
- prev_offset = box_offset;
- new_offset = utf8_prev(text_box->text, box_offset);
-
- if (textinput_textbox_delete(c, text_box, new_offset,
- prev_offset - new_offset))
- box_offset = new_offset;
- }
-
- changed = true;
- }
- break;
-
- case KEY_DELETE_RIGHT:
- {
- unsigned next_offset;
-
- if (selection_exists) {
- textinput_textbox_delete(c, text_box, 0, 0);
- } else {
- /* Can't delete right from text box end */
- if (box_offset >= text_box->length)
- return true;
-
- /* Go to the next valid UTF-8 character */
- next_offset = utf8_next(text_box->text,
- text_box->length, box_offset);
-
- textinput_textbox_delete(c, text_box, box_offset,
- next_offset - box_offset);
- }
-
- changed = true;
- }
- break;
-
- case KEY_TAB:
- {
- struct form_control *next_input;
- /* Find next text entry field that is actually
- * displayed (i.e. has an associated box) */
- for (next_input = input->gadget->next;
- next_input &&
- ((next_input->type != GADGET_TEXTBOX &&
- next_input->type != GADGET_TEXTAREA &&
- next_input->type != GADGET_PASSWORD) ||
- !next_input->box);
- next_input = next_input->next)
- ;
- if (!next_input)
- return true;
-
- input = next_input->box;
- box_offset = 0;
- to_textarea = next_input->type == GADGET_TEXTAREA;
- }
- break;
-
- case KEY_NL:
- case KEY_CR: /* Return/Enter hit */
- selection_clear(&html->sel, true);
-
- if (form)
- form_submit(content_get_url(c), bw, form, 0);
- return true;
-
- case KEY_SHIFT_TAB:
- {
- struct form_control *prev_input;
- /* Find previous text entry field that is actually
- * displayed (i.e. has an associated box) */
- for (prev_input = input->gadget->prev;
- prev_input &&
- ((prev_input->type != GADGET_TEXTBOX &&
- prev_input->type != GADGET_TEXTAREA &&
- prev_input->type != GADGET_PASSWORD) ||
- !prev_input->box);
- prev_input = prev_input->prev)
- ;
- if (!prev_input)
- return true;
-
- input = prev_input->box;
- box_offset = 0;
- to_textarea = prev_input->type == GADGET_TEXTAREA;
- }
- break;
-
- case KEY_CUT_LINE:
- /* Clear the selection, if one exists */
- if (selection_exists)
- selection_clear(&html->sel, false);
-
- textinput_textarea_cut(c, text_box, 0, text_box,
- text_box->length, false);
- box_offset = 0;
-
- changed = true;
- break;
-
- case KEY_PASTE:
- {
- char *buff = NULL;
- size_t buff_len;
- bool success;
-
- gui_get_clipboard(&buff, &buff_len);
- if (buff == NULL)
- return false;
-
- success = browser_window_paste_text(bw, buff, buff_len, true);
- free(buff);
-
- return success;
- }
-
- case KEY_CUT_SELECTION:
- {
- size_t start_idx, end_idx;
- struct box *start_box =
- selection_get_start(&html->sel, &start_idx);
- struct box *end_box = selection_get_end(&html->sel, &end_idx);
-
- if (start_box && end_box) {
- selection_clear(&html->sel, false);
- textinput_textarea_cut(c, start_box, start_idx,
- end_box, end_idx, true);
-
- box_offset = start_idx;
- changed = true;
- }
- }
- break;
-
- case KEY_RIGHT:
- if (selection_exists) {
- box_offset = end_offset;
- break;
- }
-
- if (box_offset < text_box->length) {
- /* Go to the next valid UTF-8 character */
- box_offset = utf8_next(text_box->text,
- text_box->length, box_offset);
- }
-
- break;
-
- case KEY_LEFT:
- /* If there is a selection, caret should remain at start */
- if (selection_exists)
- break;
-
- /* Go to the previous valid UTF-8 character */
- box_offset = utf8_prev(text_box->text, box_offset);
- break;
-
- case KEY_LINE_START:
- box_offset = 0;
- break;
-
- case KEY_LINE_END:
- box_offset = text_box->length;
- break;
-
- case KEY_WORD_LEFT:
- /* If there is a selection, caret should remain at start */
- if (selection_exists)
- break;
-
- if (!textinput_word_left(text_box->text, &box_offset, NULL))
- box_offset = 0;
-
- break;
-
- case KEY_WORD_RIGHT:
- if (selection_exists) {
- box_offset = end_offset;
- break;
- }
-
- if (!textinput_word_right(text_box->text, text_box->length,
- &box_offset, NULL))
- box_offset = text_box->length;
-
- break;
-
- case KEY_DELETE_LINE_START:
- if (selection_exists)
- selection_clear(&html->sel, true);
-
- if (box_offset == 0)
- return true;
-
- textinput_textarea_cut(c, text_box, 0, text_box,
- box_offset, false);
- box_offset = 0;
-
- changed = true;
- break;
-
- case KEY_DELETE_LINE_END:
- if (selection_exists)
- selection_clear(&html->sel, true);
-
- if (box_offset >= text_box->length)
- return true;
-
- textinput_textarea_cut(c, text_box, box_offset,
- text_box, text_box->length, false);
-
- changed = true;
- break;
-
- default:
- return false;
- }
-
- selection_clear(&html->sel, true);
- textinput_input_update_display(c, input, box_offset,
- to_textarea, changed);
-
- return true;
-}
-
-
-/**
- * Handle clicks in a text or password input box by placing the caret.
- *
- * \param bw browser window where click occurred
- * \param input input box
- * \param box_x position of input in global document coordinates
- * \param box_y position of input in global document coordinates
- * \param x coordinate of click relative to input
- * \param y coordinate of click relative to input
- */
-void textinput_input_click(struct content *c, struct box *input,
- int box_x, int box_y, int x, int y)
-{
- size_t char_offset = 0;
- int pixel_offset = 0, dx = 0;
- struct box *text_box = input->children->children;
- plot_font_style_t fstyle;
- html_content *html = (html_content *)c;
-
- font_plot_style_from_css(text_box->style, &fstyle);
-
- nsfont.font_position_in_string(&fstyle, text_box->text,
- text_box->length, x - text_box->x,
- &char_offset, &pixel_offset);
- assert(char_offset <= text_box->length);
-
- /* Shift the text box horizontally to ensure that the
- * caret position is visible, and ideally centred */
- text_box->x = 0;
- if ((input->width < text_box->width) &&
- (input->width / 2 < pixel_offset)) {
- dx = text_box->x;
- /* Move left so caret is centred */
- text_box->x = input->width / 2 - pixel_offset;
- /* Clamp, so text box's right hand edge coincides
- * with the input's right hand edge */
- if (text_box->x < input->width - text_box->width)
- text_box->x = input->width - text_box->width;
- dx -= text_box->x;
- }
- input->gadget->caret_box_offset = char_offset;
- input->gadget->caret_form_offset =
- textinput_get_form_offset(input, text_box, char_offset);
- input->gadget->caret_pixel_offset = pixel_offset;
-
- browser_window_place_caret(html->bw,
- box_x + input->children->x +
- text_box->x + pixel_offset,
- box_y + input->children->y + text_box->y,
- text_box->height,
- textinput_input_callback,
- textinput_input_paste_text,
- textinput_input_move_caret,
- input, c);
-
- if (dx)
- html__redraw_a_box(html, input);
-}
-
-
diff --git a/render/textinput.h b/render/textinput.h
deleted file mode 100644
index 5aa747f75..000000000
--- a/render/textinput.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
- * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
- * Copyright 2004 Andrew Timmins <atimmins@blueyonder.co.uk>
- * Copyright 2004 John Tytgat <joty@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * HTML form text input handling (interface)
- */
-
-#ifndef _NETSURF_RENDER_TEXTINPUT_H_
-#define _NETSURF_RENDER_TEXTINPUT_H_
-
-#include <stdbool.h>
-
-struct box;
-struct content;
-
-
-void textinput_textarea_click(struct content *c, browser_mouse_state mouse,
- struct box *textarea, int box_x, int box_y, int x, int y);
-
-void textinput_input_click(struct content *c, struct box *input,
- int box_x, int box_y, int x, int y);
-
-#endif