func draw_selections(viewp, bufferp, crp unsafe.Pointer, mark_pairs []unsafe.Pointer) { view := (*C.GtkTextView)(viewp) buffer := (*C.GtkTextBuffer)(bufferp) cr := (*C.cairo_t)(crp) var alloc C.GtkAllocation C.gtk_widget_get_allocation((*C.GtkWidget)(viewp), &alloc) n := len(mark_pairs) var start_mark, stop_mark *C.GtkTextMark var location C.GdkRectangle var iter C.GtkTextIter var x, y C.gint var dx, dy C.double for i := 0; i < n; i += 2 { start_mark = (*C.GtkTextMark)(mark_pairs[i]) C.gtk_text_buffer_get_iter_at_mark(buffer, &iter, start_mark) C.gtk_text_view_get_iter_location(view, &iter, &location) C.gtk_text_view_buffer_to_window_coords(view, C.GTK_TEXT_WINDOW_WIDGET, C.gint(location.x), C.gint(location.y), &x, &y) if C.int(x) > alloc.width || C.int(y) > alloc.height || x < 0 || y < 0 { continue } dx = C.double(x) dy = C.double(y) C.cairo_set_source_rgb(cr, 1, 0, 0) C.cairo_move_to(cr, dx, dy) C.cairo_set_line_width(cr, 2) C.cairo_line_to(cr, dx+6, dy) C.cairo_stroke(cr) C.cairo_move_to(cr, dx, dy) C.cairo_set_line_width(cr, 1) C.cairo_line_to(cr, dx, dy+C.double(location.height)) C.cairo_stroke(cr) stop_mark = (*C.GtkTextMark)(mark_pairs[i+1]) C.gtk_text_buffer_get_iter_at_mark(buffer, &iter, stop_mark) C.gtk_text_view_get_iter_location(view, &iter, &location) C.gtk_text_view_buffer_to_window_coords(view, C.GTK_TEXT_WINDOW_WIDGET, C.gint(location.x), C.gint(location.y), &x, &y) if C.int(x) > alloc.width || C.int(y) > alloc.height || x < 0 || y < 0 { continue } dx = C.double(x) dy = C.double(y) C.cairo_set_source_rgb(cr, 0, 1, 0) C.cairo_move_to(cr, dx, dy) C.cairo_set_line_width(cr, 1) C.cairo_line_to(cr, dx, dy+C.double(location.height)) C.cairo_stroke(cr) C.cairo_move_to(cr, dx, dy+C.double(location.height)) C.cairo_set_line_width(cr, 2) C.cairo_line_to(cr, dx-6, dy+C.double(location.height)) C.cairo_stroke(cr) } }
func collect_words(bufferp unsafe.Pointer, isEditMode bool, rep unsafe.Pointer) { var start_iter, end_iter C.GtkTextIter buf := (*C.GtkTextBuffer)(bufferp) C.gtk_text_buffer_get_start_iter(buf, &start_iter) C.gtk_text_buffer_get_end_iter(buf, &end_iter) text := []byte(C.GoString((*C.char)(C.gtk_text_buffer_get_text(buf, &start_iter, &end_iter, C.gtk_false())))) C.gtk_text_buffer_get_iter_at_mark(buf, &start_iter, C.gtk_text_buffer_get_insert(buf)) cursor_char_offset := int(C.gtk_text_iter_get_offset(&start_iter)) go func() { byte_offset := 0 char_offset := 0 re := (*regexp.Regexp)(rep) decode_byte_offset := 0 var word_start_char_offset, word_end_char_offset int var size int for { // find next word loc := re.FindIndex(text[byte_offset:]) if loc == nil { return } // convert byte offset to char offset byte_offset += loc[0] for decode_byte_offset < byte_offset { _, size = utf8.DecodeRune(text[decode_byte_offset:]) decode_byte_offset += size char_offset += 1 } word_start_char_offset = char_offset byte_offset += loc[1] - loc[0] for decode_byte_offset < byte_offset { _, size = utf8.DecodeRune(text[decode_byte_offset:]) decode_byte_offset += size char_offset += 1 } word_end_char_offset = char_offset // skip current word in edit mode if isEditMode { if cursor_char_offset >= word_start_char_offset && cursor_char_offset <= word_end_char_offset { continue } } // add to global vocabulary GlobalVocabulary.Add(string(text[byte_offset-(loc[1]-loc[0]) : byte_offset])) } }() }