From 08035f1197405133ef1638eff4f312ddfb84e597 Mon Sep 17 00:00:00 2001 From: Michael Drake Date: Thu, 7 Feb 2013 14:36:54 +0000 Subject: Remove unused textinput widget. (Old html form text editing.) --- render/textinput.c | 2213 ---------------------------------------------------- render/textinput.h | 41 - 2 files changed, 2254 deletions(-) delete mode 100644 render/textinput.c delete mode 100644 render/textinput.h (limited to 'render') 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 - * Copyright 2004 James Bursa - * Copyright 2004 Andrew Timmins - * Copyright 2004 John Tytgat - * Copyright 2005 Adrian Lees - * - * 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 . - */ - -/** \file - * HTML form text input handling (implementation) - */ - -#include -#include -#include - -#include - -#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 - * Copyright 2004 James Bursa - * Copyright 2004 Andrew Timmins - * Copyright 2004 John Tytgat - * - * 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 . - */ - -/** \file - * HTML form text input handling (interface) - */ - -#ifndef _NETSURF_RENDER_TEXTINPUT_H_ -#define _NETSURF_RENDER_TEXTINPUT_H_ - -#include - -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 -- cgit v1.2.3