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-rw-r--r--desktop/textinput.c2341
1 files changed, 1158 insertions, 1183 deletions
diff --git a/desktop/textinput.c b/desktop/textinput.c
index 7a3983ab7..ceb90007e 100644
--- a/desktop/textinput.c
+++ b/desktop/textinput.c
@@ -52,50 +52,23 @@
struct caret ghost_caret;
+static bool textbox_delete(struct browser_window *bw, struct box *text_box,
+ unsigned char_offset, unsigned utf8_len);
+
+/* Textarea callbacks */
static bool browser_window_textarea_callback(struct browser_window *bw,
uint32_t key, void *p);
-static bool browser_window_input_callback(struct browser_window *bw,
- uint32_t key, void *p);
-static void browser_window_place_caret(struct browser_window *bw,
- int x, int y, int height,
- browser_caret_callback caret_cb,
- browser_paste_callback paste_cb,
- browser_move_callback move_cb,
+static void browser_window_textarea_move_caret(struct browser_window *bw,
void *p);
static bool browser_window_textarea_paste_text(struct browser_window *bw,
const char *utf8, unsigned utf8_len, bool last, void *handle);
+
+/* Text input callbacks */
static bool browser_window_input_paste_text(struct browser_window *bw,
const char *utf8, unsigned utf8_len, bool last, void *handle);
-static void browser_window_textarea_move_caret(struct browser_window *bw,
- void *p);
static void browser_window_input_move_caret(struct browser_window *bw, void *p);
-static void input_update_display(struct browser_window *bw, struct box *input,
- unsigned box_offset, bool to_textarea, bool redraw);
-static size_t get_form_offset(struct box* input, struct box* text_box,
- size_t char_offset);
-static bool textbox_insert(struct browser_window *bw, struct box *text_box,
- unsigned char_offset, const char *utf8, unsigned utf8_len);
-static bool textbox_delete(struct browser_window *bw, struct box *text_box,
- unsigned char_offset, unsigned utf8_len);
-static struct box *textarea_insert_break(struct browser_window *bw,
- struct box *text_box, size_t char_offset);
-static bool delete_handler(struct browser_window *bw, struct box *b,
- int offset, size_t length);
-static void delete_selection(struct selection *s);
-static struct box *line_start(struct box *text_box);
-static struct box *line_end(struct box *text_box);
-static struct box *line_above(struct box *text_box);
-static struct box *line_below(struct box *text_box);
-static bool textarea_cut(struct browser_window *bw,
- struct box *start_box, unsigned start_idx,
- struct box *end_box, unsigned end_idx, bool clipboard);
-static void textarea_reflow(struct browser_window *bw, struct box *textarea,
- struct box *inline_container);
-static bool word_left(const char *text, size_t *poffset, size_t *pchars);
-static bool word_right(const char *text, size_t len, size_t *poffset,
- size_t *pchars);
-static bool ensure_caret_visible(struct browser_window *bw,
- struct box *textarea);
+static bool browser_window_input_callback(struct browser_window *bw,
+ uint32_t key, void *p);
#define SPACE_LEN(b) ((b->space == 0) ? 0 : 1)
@@ -252,48 +225,904 @@ struct box *textarea_get_position(struct box *textarea, int x, int y,
/**
- * Handle clicks in a text area by placing the caret.
+ * Position the caret and assign a callback for key presses.
*
- * \param bw browser window 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
+ * \param bw The browser window in which to place the caret
+ * \param x X coordinate of the caret
+ * \param y Y coordinate
+ * \param height Height of caret
+ * \param caret_cb Callback function for keypresses
+ * \param paste_cb Callback function for pasting text
+ * \param move_cb Callback function for caret movement
+ * \param p Callback private data pointer, passed to callback function
*/
-void browser_window_textarea_click(struct browser_window *bw,
- browser_mouse_state mouse,
- struct box *textarea,
- int box_x, int box_y,
- int x, int y)
+static void browser_window_place_caret(struct browser_window *bw,
+ int x, int y, int height,
+ browser_caret_callback caret_cb,
+ browser_paste_callback paste_cb,
+ browser_move_callback move_cb,
+ void *p)
{
- /* 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 browser_window *root_bw;
+ int pos_x = 0;
+ int pos_y = 0;
- int char_offset = 0, pixel_offset = 0;
- struct box *inline_container = textarea->children;
+ /* Find top level browser window */
+ root_bw = browser_window_get_root(bw);
+ browser_window_get_position(bw, true, &pos_x, &pos_y);
+
+ x = x * bw->scale + pos_x;
+ y = y * bw->scale + pos_y;
+
+ gui_window_place_caret(root_bw->window, x, y, height);
+ bw->caret_callback = caret_cb;
+ bw->paste_callback = paste_cb;
+ bw->move_callback = move_cb;
+ bw->caret_p = p;
+
+ /* Set focus browser window */
+ root_bw->focus = bw;
+}
+
+
+/**
+ * Removes the caret and callback for key process.
+ *
+ * \param bw The browser window from which to remove caret
+ */
+void browser_window_remove_caret(struct browser_window *bw)
+{
+ struct browser_window *root_bw;
+
+ /* Find top level browser window */
+ root_bw = bw;
+ while (root_bw && !root_bw->window && root_bw->parent) {
+ root_bw = root_bw->parent;
+ }
+
+ gui_window_remove_caret(root_bw->window);
+
+ bw->caret_callback = NULL;
+ bw->paste_callback = NULL;
+ bw->move_callback = NULL;
+ bw->caret_p = NULL;
+
+ selection_clear(bw->sel, true);
+}
+
+
+/**
+ * Delete some text from a box, or delete the box in its entirety
+ *
+ * \param bw browser window
+ * \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 delete_handler(struct browser_window *bw, 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 textbox_delete(bw, b, offset,
+ min(length, text_length - offset));
+}
+
+
+/**
+ * Remove the selected text from a text box and gadget (if applicable)
+ *
+ * \param s The selection to be removed
+ */
+
+static void delete_selection(struct selection *s)
+{
+ size_t start_offset, end_offset;
struct box *text_box;
- bool scrolled;
+ struct box *end_box;
+ struct box *next;
+ size_t sel_len;
+ int beginning = 0;
- text_box = textarea_get_position(textarea, x, y,
- &char_offset, &pixel_offset);
+ assert(s->defined);
- textarea->gadget->caret_inline_container = inline_container;
+ 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 */
+ delete_handler(s->bw, 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);
+ }
+
+ delete_handler(s->bw, end_box, beginning, end_offset);
+}
+
+
+/**
+ * Insert a number of chars into a text box
+ *
+ * \param bw browser window
+ * \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 textbox_insert(struct browser_window *bw, struct box *text_box,
+ unsigned char_offset, const char *utf8, unsigned utf8_len)
+{
+ char *text;
+ struct box *input = text_box->parent->parent;
+ struct content *current_content;
+ bool hide;
+
+ assert(bw != NULL);
+ assert(bw->current_content != NULL);
+
+ /** \todo Stop poking around inside contents.
+ * Why is this code in desktop/, anyway? (It's HTML-specific) */
+ current_content = hlcache_handle_get_content(bw->current_content);
+
+ if (bw->sel->defined)
+ delete_selection(bw->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(current_content, 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 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 bw browser window
+ * \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 textbox_delete(struct browser_window *bw, struct box *text_box,
+ unsigned char_offset, unsigned utf8_len)
+{
+ unsigned next_offset = char_offset + utf8_len;
+ struct box *form = text_box->parent->parent;
+
+ if (bw->sel->defined) {
+ delete_selection(bw->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 = get_form_offset(form, text_box,
+ char_offset);
+ size_t next_offset = 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 *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 *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 *line_above(struct box *text_box)
+{
+ struct box *prev;
+
+ text_box = line_start(text_box);
+
+ prev = text_box->prev;
+ while (prev && prev->type == BOX_BR)
+ prev = prev->prev;
+
+ return prev ? line_start(prev) : text_box;
+}
+
+
+/**
+ * Advance to the start of the next line, if there is one.
+ */
+
+static struct box *line_below(struct box *text_box)
+{
+ struct box *next;
+
+ text_box = line_end(text_box);
+
+ next = text_box->next;
+ while (next && next->type == BOX_BR)
+ next = next->next;
+
+ return next ? next : text_box;
+}
+
+
+/**
+ * Cut a range of text from a text box,
+ * possibly placing it on the global clipboard.
+ *
+ * \param bw browser window
+ * \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 textarea_cut(struct browser_window *bw,
+ 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 (clipboard && !gui_empty_clipboard())
+ 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 &&
+ !gui_add_to_clipboard("\n", 1, false)) {
+ gui_commit_clipboard();
+ return false;
+ }
+ box_unlink_and_free(box);
+ } else {
+ /* append box text to clipboard and then delete it */
+ if (clipboard &&
+ !gui_add_to_clipboard(box->text + start_idx,
+ box->length - start_idx,
+ SPACE_LEN(box))) {
+ gui_commit_clipboard();
+ return false;
+ }
+
+ if (del) {
+ if (!delete_handler(bw, box, start_idx,
+ (box->length + SPACE_LEN(box)) -
+ start_idx) && clipboard) {
+ gui_commit_clipboard();
+ return false;
+ }
+ } else {
+ textbox_delete(bw, 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 && !gui_add_to_clipboard(box->text + start_idx,
+ end_idx - start_idx, end_idx > box->length)) {
+ success = false;
+ } else {
+ if (del) {
+ if (!delete_handler(bw, box, start_idx,
+ end_idx - start_idx))
+ success = false;
+ } else {
+ textbox_delete(bw, box, start_idx,
+ end_idx - start_idx);
+ }
+ }
+ }
+
+ if (clipboard && !gui_commit_clipboard())
+ success = false;
+
+ return success;
+}
+
+
+/**
+ * Break a text box into two
+ *
+ * \param bw browser window
+ * \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 *textarea_insert_break(struct browser_window *bw,
+ struct box *text_box, size_t char_offset)
+{
+ struct box *new_br, *new_text;
+ struct content *current_content;
+ char *text;
+
+ assert(bw != NULL);
+ assert(bw->current_content != NULL);
+
+ /** \todo Stop poking around inside content objects */
+ current_content = hlcache_handle_get_content(bw->current_content);
+
+ text = talloc_array(current_content, 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, current_content);
+ new_text = talloc(current_content, 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 bw browser window
+ * \param textarea text area box
+ * \param inline_container container holding text box
+ */
+
+static void textarea_reflow(struct browser_window *bw, struct box *textarea,
+ struct box *inline_container)
+{
+ struct content *c = hlcache_handle_get_content(bw->current_content);
+ 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 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 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 bw browser window where click ocurred
+ * \param textarea textarea box
+ * \return true if a change in scroll offsets has occurred
+*/
+
+static bool ensure_caret_visible(struct browser_window *bw,
+ struct box *textarea)
+{
+ html_content *html = (html_content *)
+ hlcache_handle_get_content(bw->current_content);
+ 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 handle pointer to textarea
+ * \return true iff successful
+ */
+
+bool browser_window_textarea_paste_text(struct browser_window *bw,
+ const char *utf8, unsigned utf8_len, bool last, void *handle)
+{
+ struct box *textarea = handle;
+ 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 (!textbox_insert(bw, text_box, char_offset, utf8, utf8_len))
+ return false;
+
+ char_offset += utf8_len;
+ if (p == ep)
+ break;
+
+ new_text = textarea_insert_break(bw, 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;
- textarea->gadget->caret_pixel_offset = pixel_offset;
- box_x += scrollbar_get_offset(textarea->scroll_x);
- box_y += scrollbar_get_offset(textarea->scroll_y);
- scrolled = ensure_caret_visible(bw, textarea);
+ if (update) {
+ int box_x, box_y;
+ plot_font_style_t fstyle;
+
+ /* reflow textarea preserving width and height */
+ textarea_reflow(bw, 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);
+ ensure_caret_visible(bw, 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,
+ browser_window_textarea_callback,
+ browser_window_textarea_paste_text,
+ browser_window_textarea_move_caret,
+ textarea);
+
+ html_redraw_a_box(bw->current_content, textarea);
+ }
+
+ return success;
+}
+
+
+/**
+ * Move caret to new position after reformatting
+ *
+ * \param bw browser window
+ * \param p pointer textarea box
+ * \return none
+ */
+
+void browser_window_textarea_move_caret(struct browser_window *bw, void *p)
+{
+ struct box *textarea = p;
+ 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,
@@ -303,9 +1132,78 @@ void browser_window_textarea_click(struct browser_window *bw,
browser_window_textarea_paste_text,
browser_window_textarea_move_caret,
textarea);
+}
- if (scrolled)
- html_redraw_a_box(bw->current_content, textarea);
+
+/**
+ * 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 input_update_display(struct browser_window *bw, 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;
+
+ 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(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 ? browser_window_textarea_callback
+ : browser_window_input_callback,
+ to_textarea ? browser_window_textarea_paste_text
+ : browser_window_input_paste_text,
+ to_textarea ? browser_window_textarea_move_caret
+ : browser_window_input_move_caret,
+ input);
+
+ if (dx || redraw)
+ html_redraw_a_box(bw->current_content, input);
}
@@ -816,50 +1714,162 @@ bool browser_window_textarea_callback(struct browser_window *bw,
/**
- * Handle clicks in a text or password input box by placing the caret.
+ * Handle clicks in a text area 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
+ * \param bw browser window 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 browser_window_input_click(struct browser_window* bw,
- struct box *input,
+void browser_window_textarea_click(struct browser_window *bw,
+ browser_mouse_state mouse,
+ struct box *textarea,
int box_x, int box_y,
int x, int y)
{
- size_t char_offset = 0;
- int pixel_offset = 0, dx = 0;
+ /* 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;
+
+ text_box = 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 = ensure_caret_visible(bw, 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,
+ browser_window_textarea_callback,
+ browser_window_textarea_paste_text,
+ browser_window_textarea_move_caret,
+ textarea);
+
+ if (scrolled)
+ html_redraw_a_box(bw->current_content, 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 p pointer to input box
+ * \return true iff successful
+ */
+
+bool browser_window_input_paste_text(struct browser_window *bw,
+ const char *utf8, unsigned utf8_len, bool last, void *handle)
+{
+ struct box *input = handle;
+ 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 (!textbox_insert(bw, 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)
+ input_update_display(bw, input, box_offset, false, true);
+
+ return success;
+}
+
+
+/**
+ * Move caret to new position after reformatting
+ *
+ * \param bw browser window
+ * \param p pointer to text input box
+ * \return none
+ */
+
+void browser_window_input_move_caret(struct browser_window *bw, void *p)
+{
+ struct box *input = (struct box *)p;
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);
- 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);
+ box_coords(input, &box_x, &box_y);
- /* 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 =
- get_form_offset(input, text_box, char_offset);
- input->gadget->caret_pixel_offset = pixel_offset;
+ nsfont.font_width(&fstyle, text_box->text, box_offset,
+ &pixel_offset);
browser_window_place_caret(bw,
box_x + input->children->x +
@@ -870,9 +1880,6 @@ void browser_window_input_click(struct browser_window* bw,
browser_window_input_paste_text,
browser_window_input_move_caret,
input);
-
- if (dx)
- html_redraw_a_box(bw->current_content, input);
}
/**
@@ -1156,114 +2163,63 @@ bool browser_window_input_callback(struct browser_window *bw,
/**
- * Position the caret and assign a callback for key presses.
+ * Handle clicks in a text or password input box by placing the caret.
*
- * \param bw The browser window in which to place the caret
- * \param x X coordinate of the caret
- * \param y Y coordinate
- * \param height Height of caret
- * \param caret_cb Callback function for keypresses
- * \param paste_cb Callback function for pasting text
- * \param move_cb Callback function for caret movement
- * \param p Callback private data pointer, passed to callback function
+ * \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 browser_window_place_caret(struct browser_window *bw,
- int x, int y, int height,
- browser_caret_callback caret_cb,
- browser_paste_callback paste_cb,
- browser_move_callback move_cb,
- void *p)
+void browser_window_input_click(struct browser_window* bw,
+ struct box *input,
+ int box_x, int box_y,
+ int x, int y)
{
- struct browser_window *root_bw;
- int pos_x = 0;
- int pos_y = 0;
-
- /* Find top level browser window */
- root_bw = browser_window_get_root(bw);
- browser_window_get_position(bw, true, &pos_x, &pos_y);
-
- x = x * bw->scale + pos_x;
- y = y * bw->scale + pos_y;
-
- gui_window_place_caret(root_bw->window, x, y, height);
- bw->caret_callback = caret_cb;
- bw->paste_callback = paste_cb;
- bw->move_callback = move_cb;
- bw->caret_p = p;
-
- /* Set focus browser window */
- root_bw->focus = bw;
-}
+ size_t char_offset = 0;
+ int pixel_offset = 0, dx = 0;
+ struct box *text_box = input->children->children;
+ plot_font_style_t fstyle;
+ font_plot_style_from_css(text_box->style, &fstyle);
-/**
- * Removes the caret and callback for key process.
- *
- * \param bw The browser window from which to remove caret
- */
-void browser_window_remove_caret(struct browser_window *bw)
-{
- struct browser_window *root_bw;
+ 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);
- /* Find top level browser window */
- root_bw = bw;
- while (root_bw && !root_bw->window && root_bw->parent) {
- root_bw = root_bw->parent;
+ /* 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 =
+ get_form_offset(input, text_box, char_offset);
+ input->gadget->caret_pixel_offset = pixel_offset;
- gui_window_remove_caret(root_bw->window);
-
- bw->caret_callback = NULL;
- bw->paste_callback = NULL;
- bw->move_callback = NULL;
- bw->caret_p = NULL;
-
- selection_clear(bw->sel, 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
- */
-
-size_t get_form_offset(struct box* input, struct box* text_box,
- size_t char_offset)
-{
- int uchars;
- unsigned int 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,
+ browser_window_input_callback,
+ browser_window_input_paste_text,
+ browser_window_input_move_caret,
+ input);
- 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;
+ if (dx)
+ html_redraw_a_box(bw->current_content, input);
}
/**
@@ -1329,984 +2285,3 @@ bool browser_window_paste_text(struct browser_window *bw, const char *utf8,
bw->focus->caret_p);
}
-
-/**
- * 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 handle pointer to textarea
- * \return true iff successful
- */
-
-bool browser_window_textarea_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last, void *handle)
-{
- struct box *textarea = handle;
- 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 (!textbox_insert(bw, text_box, char_offset, utf8, utf8_len))
- return false;
-
- char_offset += utf8_len;
- if (p == ep)
- break;
-
- new_text = textarea_insert_break(bw, 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 */
- textarea_reflow(bw, 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);
- ensure_caret_visible(bw, 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,
- browser_window_textarea_callback,
- browser_window_textarea_paste_text,
- browser_window_textarea_move_caret,
- textarea);
-
- html_redraw_a_box(bw->current_content, textarea);
- }
-
- return success;
-}
-
-
-/**
- * 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 p pointer to input box
- * \return true iff successful
- */
-
-bool browser_window_input_paste_text(struct browser_window *bw,
- const char *utf8, unsigned utf8_len, bool last, void *handle)
-{
- struct box *input = handle;
- 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 (!textbox_insert(bw, 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)
- input_update_display(bw, input, box_offset, false, true);
-
- return success;
-}
-
-
-/**
- * Move caret to new position after reformatting
- *
- * \param bw browser window
- * \param p pointer textarea box
- * \return none
- */
-
-void browser_window_textarea_move_caret(struct browser_window *bw, void *p)
-{
- struct box *textarea = p;
- 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,
- browser_window_textarea_callback,
- browser_window_textarea_paste_text,
- browser_window_textarea_move_caret,
- textarea);
-}
-
-
-/**
- * Move caret to new position after reformatting
- *
- * \param bw browser window
- * \param p pointer to text input box
- * \return none
- */
-
-void browser_window_input_move_caret(struct browser_window *bw, void *p)
-{
- struct box *input = (struct box *)p;
- 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,
- browser_window_input_callback,
- browser_window_input_paste_text,
- browser_window_input_move_caret,
- input);
-}
-
-
-/**
- * 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
- */
-
-void input_update_display(struct browser_window *bw, 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;
-
- 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(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 ? browser_window_textarea_callback
- : browser_window_input_callback,
- to_textarea ? browser_window_textarea_paste_text
- : browser_window_input_paste_text,
- to_textarea ? browser_window_textarea_move_caret
- : browser_window_input_move_caret,
- input);
-
- if (dx || redraw)
- html_redraw_a_box(bw->current_content, input);
-}
-
-
-/**
- * Insert a number of chars into a text box
- *
- * \param bw browser window
- * \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
- */
-
-bool textbox_insert(struct browser_window *bw, struct box *text_box,
- unsigned char_offset, const char *utf8, unsigned utf8_len)
-{
- char *text;
- struct box *input = text_box->parent->parent;
- struct content *current_content;
- bool hide;
-
- assert(bw != NULL);
- assert(bw->current_content != NULL);
-
- /** \todo Stop poking around inside contents.
- * Why is this code in desktop/, anyway? (It's HTML-specific) */
- current_content = hlcache_handle_get_content(bw->current_content);
-
- if (bw->sel->defined)
- delete_selection(bw->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(current_content, 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;
-}
-
-
-/**
- * Delete a number of chars from a text box
- *
- * \param bw browser window
- * \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 textbox_delete(struct browser_window *bw, struct box *text_box,
- unsigned char_offset, unsigned utf8_len)
-{
- unsigned next_offset = char_offset + utf8_len;
- struct box *form = text_box->parent->parent;
-
- if (bw->sel->defined) {
- delete_selection(bw->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 = get_form_offset(form, text_box,
- char_offset);
- size_t next_offset = 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;
-}
-
-
-/**
- * Delete some text from a box, or delete the box in its entirety
- *
- * \param bw browser window
- * \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
- */
-
-bool delete_handler(struct browser_window *bw, 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 textbox_delete(bw, b, offset,
- min(length, text_length - offset));
-}
-
-
-/**
- * Remove the selected text from a text box and gadget (if applicable)
- *
- * \param s The selection to be removed
- */
-
-void delete_selection(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 */
- delete_handler(s->bw, 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);
- }
-
- delete_handler(s->bw, end_box, beginning, end_offset);
-}
-
-/**
- * Locate the first inline box at the start of this line
- *
- * \param text_box text box from which to start searching
- */
-
-struct box *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
- */
-
-struct box *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.
- */
-
-struct box *line_above(struct box *text_box)
-{
- struct box *prev;
-
- text_box = line_start(text_box);
-
- prev = text_box->prev;
- while (prev && prev->type == BOX_BR)
- prev = prev->prev;
-
- return prev ? line_start(prev) : text_box;
-}
-
-
-/**
- * Advance to the start of the next line, if there is one.
- */
-
-struct box *line_below(struct box *text_box)
-{
- struct box *next;
-
- text_box = line_end(text_box);
-
- next = text_box->next;
- while (next && next->type == BOX_BR)
- next = next->next;
-
- return next ? next : text_box;
-}
-
-
-/**
- * Break a text box into two
- *
- * \param bw browser window
- * \param text_box text box to be split
- * \param char_offset offset (in bytes) at which text box is to be split
- */
-
-struct box *textarea_insert_break(struct browser_window *bw,
- struct box *text_box, size_t char_offset)
-{
- struct box *new_br, *new_text;
- struct content *current_content;
- char *text;
-
- assert(bw != NULL);
- assert(bw->current_content != NULL);
-
- /** \todo Stop poking around inside content objects */
- current_content = hlcache_handle_get_content(bw->current_content);
-
- text = talloc_array(current_content, 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, current_content);
- new_text = talloc(current_content, 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;
-}
-
-
-/**
- * Cut a range of text from a text box,
- * possibly placing it on the global clipboard.
- *
- * \param bw browser window
- * \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
- */
-
-bool textarea_cut(struct browser_window *bw,
- 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 (clipboard && !gui_empty_clipboard())
- 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 &&
- !gui_add_to_clipboard("\n", 1, false)) {
- gui_commit_clipboard();
- return false;
- }
- box_unlink_and_free(box);
- } else {
- /* append box text to clipboard and then delete it */
- if (clipboard &&
- !gui_add_to_clipboard(box->text + start_idx,
- box->length - start_idx,
- SPACE_LEN(box))) {
- gui_commit_clipboard();
- return false;
- }
-
- if (del) {
- if (!delete_handler(bw, box, start_idx,
- (box->length + SPACE_LEN(box)) -
- start_idx) && clipboard) {
- gui_commit_clipboard();
- return false;
- }
- } else {
- textbox_delete(bw, 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 && !gui_add_to_clipboard(box->text + start_idx,
- end_idx - start_idx, end_idx > box->length)) {
- success = false;
- } else {
- if (del) {
- if (!delete_handler(bw, box, start_idx,
- end_idx - start_idx))
- success = false;
- } else {
- textbox_delete(bw, box, start_idx,
- end_idx - start_idx);
- }
- }
- }
-
- if (clipboard && !gui_commit_clipboard())
- success = false;
-
- return success;
-}
-
-
-/**
- * Reflow textarea preserving width and height
- *
- * \param bw browser window
- * \param textarea text area box
- * \param inline_container container holding text box
- */
-
-void textarea_reflow(struct browser_window *bw, struct box *textarea,
- struct box *inline_container)
-{
- struct content *c = hlcache_handle_get_content(bw->current_content);
- 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
- */
-
-bool 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
- */
-
-bool 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 bw browser window where click ocurred
- * \param textarea textarea box
- * \return true if a change in scroll offsets has occurred
-*/
-
-bool ensure_caret_visible(struct browser_window *bw, struct box *textarea)
-{
- html_content *html = (html_content *)
- hlcache_handle_get_content(bw->current_content);
- 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;
-}
-