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https://github.com/netsurf-browser/netsurf
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do not export texplain interfaces unnecessarily
This commit is contained in:
Vincent Sanders
parent
605234c3d2
commit
6fe2f7de47
@ -593,6 +593,94 @@ static content_type textplain_content_type(void)
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}
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/**
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* Return byte offset within UTF8 textplain content.
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*
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* given the co-ordinates of a point within a textplain content. 'dir'
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* specifies the direction in which to search (-1 = above-left, +1 =
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* below-right) if the co-ordinates are not contained within a line.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] x x ordinate of point
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* \param[in] y y ordinate of point
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* \param[in] dir direction of search if not within line
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* \return byte offset of character containing (or nearest to) point
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*/
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static size_t
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textplain_offset_from_coords(struct content *c, int x, int y, int dir)
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{
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textplain_content *textc = (textplain_content *) c;
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float line_height = textplain_line_height();
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struct textplain_line *line;
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const char *text;
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unsigned nlines;
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size_t length;
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int idx;
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assert(c != NULL);
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y = (int)((float)(y - MARGIN) / line_height);
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x -= MARGIN;
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nlines = textc->physical_line_count;
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if (!nlines)
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return 0;
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if (y <= 0) y = 0;
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else if ((unsigned)y >= nlines)
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y = nlines - 1;
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line = &textc->physical_line[y];
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text = textc->utf8_data + line->start;
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length = line->length;
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idx = 0;
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while (x > 0) {
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size_t next_offset = 0;
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int width = INT_MAX;
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while (next_offset < length && text[next_offset] != '\t') {
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next_offset = utf8_next(text, length, next_offset);
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}
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if (next_offset < length) {
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guit->layout->width(&textplain_style,
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text,
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next_offset,
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&width);
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}
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if (x <= width) {
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int pixel_offset;
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size_t char_offset;
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guit->layout->position(&textplain_style,
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text, next_offset, x,
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&char_offset, &pixel_offset);
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idx += char_offset;
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break;
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}
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x -= width;
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length -= next_offset;
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text += next_offset;
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idx += next_offset;
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/* check if it's within the tab */
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width = textplain_tab_width - (width % textplain_tab_width);
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if (x <= width) break;
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x -= width;
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length--;
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text++;
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idx++;
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}
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return line->start + idx;
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}
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/**
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* Handle mouse clicks and movements in a TEXTPLAIN content window.
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*
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@ -1212,6 +1300,91 @@ textplain_coord_from_offset(const char *text, size_t offset, size_t length)
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return x;
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}
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/**
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* Retrieve number of lines in content
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*
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* \param[in] c Content to retrieve line count from
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* \return Number of lines
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*/
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static unsigned long textplain_line_count(struct content *c)
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{
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textplain_content *text = (textplain_content *) c;
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assert(c != NULL);
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return text->physical_line_count;
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}
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/**
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* Return a pointer to the requested line of text.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] lineno line number
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* \param[out] poffset receives byte offset of line start within text
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* \param[out] plen receives length of returned line
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* \return pointer to text, or NULL if invalid line number
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*/
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static char *
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textplain_get_line(struct content *c,
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unsigned lineno,
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size_t *poffset,
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size_t *plen)
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{
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textplain_content *text = (textplain_content *) c;
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struct textplain_line *line;
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assert(c != NULL);
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if (lineno >= text->physical_line_count)
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return NULL;
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line = &text->physical_line[lineno];
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*poffset = line->start;
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*plen = line->length;
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return text->utf8_data + line->start;
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}
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/**
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* Find line number of byte in text
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*
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* Given a byte offset within the text, return the line number
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* of the line containing that offset.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] offset byte offset within textual representation
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* \return line number, or -1 if offset invalid (larger than size)
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*/
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static int textplain_find_line(struct content *c, unsigned offset)
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{
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textplain_content *text = (textplain_content *) c;
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struct textplain_line *line;
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int nlines;
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int lineno = 0;
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assert(c != NULL);
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line = text->physical_line;
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nlines = text->physical_line_count;
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if (offset > text->utf8_data_size) {
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return -1;
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}
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/* \todo - implement binary search here */
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while (lineno < nlines && line[lineno].start < offset) {
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lineno++;
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}
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if (line[lineno].start > offset) {
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lineno--;
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}
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return lineno;
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}
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/**
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* Finds all occurrences of a given string in a textplain content
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*
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@ -1369,15 +1542,6 @@ nserror textplain_init(void)
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}
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/* exported interface documented in html/textplain.h */
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unsigned long textplain_line_count(struct content *c)
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{
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textplain_content *text = (textplain_content *) c;
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assert(c != NULL);
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return text->physical_line_count;
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}
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/* exported interface documented in html/textplain.h */
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@ -1391,81 +1555,6 @@ size_t textplain_size(struct content *c)
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}
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/* exported interface documented in html/textplain.h */
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size_t textplain_offset_from_coords(struct content *c, int x, int y, int dir)
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{
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textplain_content *textc = (textplain_content *) c;
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float line_height = textplain_line_height();
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struct textplain_line *line;
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const char *text;
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unsigned nlines;
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size_t length;
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int idx;
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assert(c != NULL);
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y = (int)((float)(y - MARGIN) / line_height);
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x -= MARGIN;
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nlines = textc->physical_line_count;
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if (!nlines)
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return 0;
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if (y <= 0) y = 0;
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else if ((unsigned)y >= nlines)
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y = nlines - 1;
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line = &textc->physical_line[y];
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text = textc->utf8_data + line->start;
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length = line->length;
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idx = 0;
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while (x > 0) {
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size_t next_offset = 0;
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int width = INT_MAX;
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while (next_offset < length && text[next_offset] != '\t') {
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next_offset = utf8_next(text, length, next_offset);
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}
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if (next_offset < length) {
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guit->layout->width(&textplain_style,
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text,
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next_offset,
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&width);
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}
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if (x <= width) {
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int pixel_offset;
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size_t char_offset;
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guit->layout->position(&textplain_style,
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text, next_offset, x,
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&char_offset, &pixel_offset);
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idx += char_offset;
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break;
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}
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x -= width;
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length -= next_offset;
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text += next_offset;
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idx += next_offset;
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/* check if it's within the tab */
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width = textplain_tab_width - (width % textplain_tab_width);
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if (x <= width) break;
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x -= width;
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length--;
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text++;
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idx++;
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}
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return line->start + idx;
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}
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/* exported interface documented in html/textplain.h */
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void
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textplain_coords_from_range(struct content *c,
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@ -1520,57 +1609,6 @@ textplain_coords_from_range(struct content *c,
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}
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/* exported interface documented in html/textplain.h */
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char *
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textplain_get_line(struct content *c,
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unsigned lineno,
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size_t *poffset,
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size_t *plen)
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{
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textplain_content *text = (textplain_content *) c;
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struct textplain_line *line;
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assert(c != NULL);
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if (lineno >= text->physical_line_count)
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return NULL;
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line = &text->physical_line[lineno];
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*poffset = line->start;
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*plen = line->length;
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return text->utf8_data + line->start;
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}
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/* exported interface documented in html/textplain.h */
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int textplain_find_line(struct content *c, unsigned offset)
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{
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textplain_content *text = (textplain_content *) c;
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struct textplain_line *line;
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int nlines;
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int lineno = 0;
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assert(c != NULL);
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line = text->physical_line;
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nlines = text->physical_line_count;
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if (offset > text->utf8_data_size) {
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return -1;
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}
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/* \todo - implement binary search here */
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while (lineno < nlines && line[lineno].start < offset) {
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lineno++;
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}
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if (line[lineno].start > offset) {
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lineno--;
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}
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return lineno;
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}
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/* exported interface documented in html/textplain.h */
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char *
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textplain_get_raw_data(struct content *c,
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@ -26,11 +26,7 @@
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#ifndef NETSURF_HTML_TEXTPLAIN_H
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#define NETSURF_HTML_TEXTPLAIN_H
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#include <stddef.h>
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#include "netsurf/mouse.h"
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struct content;
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struct hlcache_handle;
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struct rect;
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/**
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@ -41,15 +37,6 @@ struct rect;
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nserror textplain_init(void);
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/**
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* Retrieve number of lines in content
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*
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* \param[in] c Content to retrieve line count from
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* \return Number of lines
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*/
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unsigned long textplain_line_count(struct content *c);
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/**
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* Retrieve the size (in bytes) of text data
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*
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@ -59,22 +46,6 @@ unsigned long textplain_line_count(struct content *c);
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size_t textplain_size(struct content *c);
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/**
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* Return byte offset within UTF8 textplain content.
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*
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* given the co-ordinates of a point within a textplain content. 'dir'
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* specifies the direction in which to search (-1 = above-left, +1 =
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* below-right) if the co-ordinates are not contained within a line.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] x x ordinate of point
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* \param[in] y y ordinate of point
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* \param[in] dir direction of search if not within line
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* \return byte offset of character containing (or nearest to) point
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*/
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size_t textplain_offset_from_coords(struct content *c, int x, int y, int dir);
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/**
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* Given a range of byte offsets within a UTF8 textplain content,
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* return a box that fully encloses the text
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@ -87,31 +58,6 @@ size_t textplain_offset_from_coords(struct content *c, int x, int y, int dir);
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void textplain_coords_from_range(struct content *c,
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unsigned start, unsigned end, struct rect *r);
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/**
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* Return a pointer to the requested line of text.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] lineno line number
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* \param[out] poffset receives byte offset of line start within text
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* \param[out] plen receives length of returned line
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* \return pointer to text, or NULL if invalid line number
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*/
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char *textplain_get_line(struct content *c, unsigned lineno,
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size_t *poffset, size_t *plen);
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/**
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* Find line number of byte in text
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*
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* Given a byte offset within the text, return the line number
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* of the line containing that offset.
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*
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* \param[in] c content of type CONTENT_TEXTPLAIN
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* \param[in] offset byte offset within textual representation
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* \return line number, or -1 if offset invalid (larger than size)
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*/
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int textplain_find_line(struct content *c, unsigned offset);
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/**
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* Return a pointer to the raw UTF-8 data, as opposed to the reformatted
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