From 333db0a17e2dcec0fa5117e50df2625643131772 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Kristian=20H=C3=B8gsberg?= Date: Wed, 27 Jun 2012 17:43:10 -0400 Subject: [PATCH] terminal: Implement word and line based selection Double-click to select by word, triple click to select by line. --- clients/terminal.c | 163 +++++++++++++++++++++++++++++++++++++---------------- 1 file changed, 114 insertions(+), 49 deletions(-) diff --git a/clients/terminal.c b/clients/terminal.c index 7a5a67a..66d3fac 100644 --- a/clients/terminal.c +++ b/clients/terminal.c @@ -364,6 +364,13 @@ enum escape_state { #define ESC_FLAG_DQUOTE 0x20 #define ESC_FLAG_SPACE 0x40 +enum { + SELECT_NONE, + SELECT_CHAR, + SELECT_WORD, + SELECT_LINE +}; + struct terminal { struct window *window; struct widget *widget; @@ -404,9 +411,12 @@ struct terminal { uint32_t hide_cursor_serial; struct wl_data_source *selection; - int32_t dragging; + uint32_t button_time; + int dragging, click_count; int selection_start_x, selection_start_y; int selection_end_x, selection_end_y; + int selection_start_row, selection_start_col; + int selection_end_row, selection_end_col; struct wl_list link; }; @@ -505,57 +515,20 @@ union decoded_attr { uint32_t key; }; -static int -terminal_compare_position(struct terminal *terminal, - int x, int y, int32_t ref_row, int32_t ref_col) -{ - struct rectangle allocation; - int top_margin, side_margin, col, row, ref_x; - - widget_get_allocation(terminal->widget, &allocation); - side_margin = allocation.x + (allocation.width - terminal->width * terminal->extents.max_x_advance) / 2; - top_margin = allocation.y + (allocation.height - terminal->height * terminal->extents.height) / 2; - - col = (x - side_margin) / terminal->extents.max_x_advance; - row = (y - top_margin) / terminal->extents.height; - - ref_x = side_margin + ref_col * terminal->extents.max_x_advance + - terminal->extents.max_x_advance / 2; - - if (row < ref_row) - return -1; - if (row == ref_row) { - if (col < ref_col) - return -1; - if (col == ref_col && x < ref_x) - return -1; - } - - return 1; -} - static void terminal_decode_attr(struct terminal *terminal, int row, int col, union decoded_attr *decoded) { struct attr attr; int foreground, background, tmp; - int start_cmp, end_cmp; - - start_cmp = - terminal_compare_position(terminal, - terminal->selection_start_x, - terminal->selection_start_y, - row, col); - end_cmp = - terminal_compare_position(terminal, - terminal->selection_end_x, - terminal->selection_end_y, - row, col); + decoded->attr.s = 0; - if (start_cmp < 0 && end_cmp > 0) - decoded->attr.s = 1; - else if (end_cmp < 0 && start_cmp > 0) + if (((row == terminal->selection_start_row && + col >= terminal->selection_start_col) || + row > terminal->selection_start_row) && + ((row == terminal->selection_end_row && + col < terminal->selection_end_col) || + row < terminal->selection_end_row)) decoded->attr.s = 1; /* get the attributes for this character cell */ @@ -2275,6 +2248,86 @@ keyboard_focus_handler(struct window *window, window_schedule_redraw(terminal->window); } +static int wordsep(int ch) +{ + const char extra[] = "-,./?%&#:_=+@~"; + + return ch == 0 || !(isalpha(ch) || isdigit(ch) || strchr(extra, ch)); +} + +static int +recompute_selection(struct terminal *terminal) +{ + struct rectangle allocation; + int col, x, width, height; + int start_row, end_row; + int word_start; + int side_margin, top_margin; + int start_x, end_x; + int cw, ch; + union utf8_char *data; + + cw = terminal->extents.max_x_advance; + ch = terminal->extents.height; + widget_get_allocation(terminal->widget, &allocation); + width = terminal->width * cw; + height = terminal->height * ch; + side_margin = allocation.x + (allocation.width - width) / 2; + top_margin = allocation.y + (allocation.height - height) / 2; + + start_row = (terminal->selection_start_y - top_margin) / ch; + end_row = (terminal->selection_end_y - top_margin) / ch; + if (start_row < end_row || + (start_row == end_row && + terminal->selection_start_x < terminal->selection_end_x)) { + terminal->selection_start_row = start_row; + terminal->selection_end_row = end_row; + start_x = terminal->selection_start_x; + end_x = terminal->selection_end_x; + } else { + terminal->selection_start_row = end_row; + terminal->selection_end_row = start_row; + start_x = terminal->selection_end_x; + end_x = terminal->selection_start_x; + } + + x = side_margin + cw / 2; + data = terminal_get_row(terminal, terminal->selection_start_row); + word_start = 0; + for (col = 0; col < terminal->width; col++, x += cw) { + if (col == 0 || wordsep(data[col - 1].ch)) + word_start = col; + if (start_x < x) + break; + } + + switch (terminal->dragging) { + case SELECT_LINE: + terminal->selection_start_col = 0; + break; + case SELECT_WORD: + terminal->selection_start_col = word_start; + break; + case SELECT_CHAR: + terminal->selection_start_col = col; + break; + } + + x = side_margin + cw / 2; + data = terminal_get_row(terminal, terminal->selection_end_row); + for (col = 0; col < terminal->width; col++, x += cw) { + if (terminal->dragging == SELECT_CHAR && end_x < x) + break; + if (terminal->dragging == SELECT_WORD && + end_x < x && wordsep(data[col].ch)) + break; + } + + terminal->selection_end_col = col; + + return 1; +} + static void button_handler(struct widget *widget, struct input *input, uint32_t time, @@ -2286,15 +2339,25 @@ button_handler(struct widget *widget, switch (button) { case 272: if (state == WL_POINTER_BUTTON_STATE_PRESSED) { - terminal->dragging = 1; + + if (time - terminal->button_time < 500) + terminal->click_count++; + else + terminal->click_count = 1; + + terminal->button_time = time; + terminal->dragging = + (terminal->click_count - 1) % 3 + SELECT_CHAR; + input_get_position(input, &terminal->selection_start_x, &terminal->selection_start_y); terminal->selection_end_x = terminal->selection_start_x; terminal->selection_end_y = terminal->selection_start_y; - widget_schedule_redraw(widget); + if (recompute_selection(terminal)) + widget_schedule_redraw(widget); } else { - terminal->dragging = 0; + terminal->dragging = SELECT_NONE; } break; } @@ -2311,7 +2374,9 @@ motion_handler(struct widget *widget, input_get_position(input, &terminal->selection_end_x, &terminal->selection_end_y); - widget_schedule_redraw(widget); + + if (recompute_selection(terminal)) + widget_schedule_redraw(widget); } return CURSOR_IBEAM; -- 2.7.4