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Diffstat (limited to 'calendar/gui/e-week-view-layout.c')
| -rw-r--r-- | calendar/gui/e-week-view-layout.c | 426 |
1 files changed, 0 insertions, 426 deletions
diff --git a/calendar/gui/e-week-view-layout.c b/calendar/gui/e-week-view-layout.c deleted file mode 100644 index 5e8331c76c..0000000000 --- a/calendar/gui/e-week-view-layout.c +++ /dev/null @@ -1,426 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ - -/* - * Author : - * Damon Chaplin <damon@ximian.com> - * - * Copyright 2001, Ximian, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -/* - * Lays out events for the Week & Month views of the calendar. It is also - * used for printing. - */ - -#include <config.h> - -#include "e-week-view-layout.h" - - -static void e_week_view_layout_event (EWeekViewEvent *event, - guint8 *grid, - GArray *spans, - GArray *old_spans, - gboolean multi_week_view, - gint weeks_shown, - gboolean compress_weekend, - gint start_weekday, - time_t *day_starts, - gint *rows_per_day); -static gint e_week_view_find_day (time_t time_to_find, - gboolean include_midnight_in_prev_day, - gint days_shown, - time_t *day_starts); -static gint e_week_view_find_span_end (gboolean multi_week_view, - gboolean compress_weekend, - gint display_start_day, - gint day); - - -GArray* -e_week_view_layout_events (GArray *events, - GArray *old_spans, - gboolean multi_week_view, - gint weeks_shown, - gboolean compress_weekend, - gint start_weekday, - time_t *day_starts, - gint *rows_per_day) -{ - EWeekViewEvent *event; - EWeekViewEventSpan *span; - gint num_days, day, event_num, span_num; - guint8 *grid; - GArray *spans; - - /* This is a temporary 2-d grid which is used to place events. - Each element is 0 if the position is empty, or 1 if occupied. - We allocate the maximum size possible here, assuming that each - event will need its own row. */ - grid = g_new0 (guint8, E_WEEK_VIEW_MAX_ROWS_PER_CELL * 7 - * E_WEEK_VIEW_MAX_WEEKS); - - /* We create a new array of spans, which will replace the old one. */ - spans = g_array_new (FALSE, FALSE, sizeof (EWeekViewEventSpan)); - - /* Clear the number of rows used per day. */ - num_days = multi_week_view ? weeks_shown * 7 : 7; - for (day = 0; day <= num_days; day++) { - rows_per_day[day] = 0; - } - - /* Iterate over the events, finding which weeks they cover, and putting - them in the first free row available. */ - for (event_num = 0; event_num < events->len; event_num++) { - event = &g_array_index (events, EWeekViewEvent, event_num); - e_week_view_layout_event (event, grid, spans, old_spans, - multi_week_view, - weeks_shown, compress_weekend, - start_weekday, day_starts, - rows_per_day); - } - - /* Free the grid. */ - g_free (grid); - - /* Destroy the old spans array, destroying any unused canvas items. */ - if (old_spans) { - for (span_num = 0; span_num < old_spans->len; span_num++) { - span = &g_array_index (old_spans, EWeekViewEventSpan, - span_num); - if (span->background_item) - gtk_object_destroy (GTK_OBJECT (span->background_item)); - if (span->text_item) - gtk_object_destroy (GTK_OBJECT (span->text_item)); - } - g_array_free (old_spans, TRUE); - } - - return spans; -} - - -static void -e_week_view_layout_event (EWeekViewEvent *event, - guint8 *grid, - GArray *spans, - GArray *old_spans, - gboolean multi_week_view, - gint weeks_shown, - gboolean compress_weekend, - gint start_weekday, - time_t *day_starts, - gint *rows_per_day) -{ - gint start_day, end_day, span_start_day, span_end_day, rows_per_cell; - gint free_row, row, day, span_num, spans_index, num_spans, days_shown; - EWeekViewEventSpan span, *old_span; - - days_shown = multi_week_view ? weeks_shown * 7 : 7; - start_day = e_week_view_find_day (event->start, FALSE, days_shown, - day_starts); - end_day = e_week_view_find_day (event->end, TRUE, days_shown, - day_starts); - start_day = CLAMP (start_day, 0, days_shown - 1); - end_day = CLAMP (end_day, 0, days_shown - 1); - -#if 0 - g_print ("In e_week_view_layout_event Start:%i End: %i\n", - start_day, end_day); -#endif - - /* Iterate through each of the spans of the event, where each span - is a sequence of 1 or more days displayed next to each other. */ - span_start_day = start_day; - rows_per_cell = E_WEEK_VIEW_MAX_ROWS_PER_CELL; - span_num = 0; - spans_index = spans->len; - num_spans = 0; - while (span_start_day <= end_day) { - span_end_day = e_week_view_find_span_end (multi_week_view, - compress_weekend, - start_weekday, - span_start_day); - span_end_day = MIN (span_end_day, end_day); -#if 0 - g_print (" Span start:%i end:%i\n", span_start_day, - span_end_day); -#endif - /* Try each row until we find a free one or we fall off the - bottom of the available rows. */ - row = 0; - free_row = -1; - while (free_row == -1 && row < rows_per_cell) { - free_row = row; - for (day = span_start_day; day <= span_end_day; - day++) { - if (grid[day * rows_per_cell + row]) { - free_row = -1; - break; - } - } - row++; - }; - - if (free_row != -1) { - /* Mark the cells as full. */ - for (day = span_start_day; day <= span_end_day; - day++) { - grid[day * rows_per_cell + free_row] = 1; - rows_per_day[day] = MAX (rows_per_day[day], - free_row + 1); - } -#if 0 - g_print (" Span start:%i end:%i row:%i\n", - span_start_day, span_end_day, free_row); -#endif - /* Add the span to the array, and try to reuse any - canvas items from the old spans. */ - span.start_day = span_start_day; - span.num_days = span_end_day - span_start_day + 1; - span.row = free_row; - span.background_item = NULL; - span.text_item = NULL; - if (event->num_spans > span_num) { - old_span = &g_array_index (old_spans, EWeekViewEventSpan, event->spans_index + span_num); - span.background_item = old_span->background_item; - span.text_item = old_span->text_item; - old_span->background_item = NULL; - old_span->text_item = NULL; - } - - g_array_append_val (spans, span); - num_spans++; - } - - span_start_day = span_end_day + 1; - span_num++; - } - - /* Set the event's spans. */ - event->spans_index = spans_index; - event->num_spans = num_spans; -} - - -/* Finds the day containing the given time. - If include_midnight_in_prev_day is TRUE then if the time exactly - matches the start of a day the previous day is returned. This is useful - when calculating the end day of an event. */ -static gint -e_week_view_find_day (time_t time_to_find, - gboolean include_midnight_in_prev_day, - gint days_shown, - time_t *day_starts) -{ - gint day; - - if (time_to_find < day_starts[0]) - return -1; - if (time_to_find > day_starts[days_shown]) - return days_shown; - - for (day = 1; day <= days_shown; day++) { - if (time_to_find <= day_starts[day]) { - if (time_to_find == day_starts[day] - && !include_midnight_in_prev_day) - return day; - return day - 1; - } - } - - g_assert_not_reached (); - return days_shown; -} - - -/* This returns the last possible day in the same span as the given day. - A span is all the days which are displayed next to each other from left to - right. In the week view all spans are only 1 day, since Tuesday is below - Monday rather than beside it etc. In the month view, if the weekends are not - compressed then each week is a span, otherwise we have to break a span up - on Saturday, use a separate span for Sunday, and start again on Monday. */ -static gint -e_week_view_find_span_end (gboolean multi_week_view, - gboolean compress_weekend, - gint display_start_day, - gint day) -{ - gint week, col, sat_col, end_col; - - if (multi_week_view) { - week = day / 7; - col = day % 7; - - /* We default to the last column in the row. */ - end_col = 6; - - /* If the weekend is compressed we must end any spans on - Saturday and Sunday. */ - if (compress_weekend) { - sat_col = (5 + 7 - display_start_day) % 7; - if (col <= sat_col) - end_col = sat_col; - else if (col == sat_col + 1) - end_col = sat_col + 1; - } - - return week * 7 + end_col; - } else { - return day; - } -} - - -void -e_week_view_layout_get_day_position (gint day, - gboolean multi_week_view, - gint weeks_shown, - gint display_start_day, - gboolean compress_weekend, - gint *day_x, - gint *day_y, - gint *rows) -{ - gint week, day_of_week, row, col, weekend_col, box, weekend_box; - - *day_x = *day_y = *rows = 0; - g_return_if_fail (day >= 0); - - if (multi_week_view) { - g_return_if_fail (day < weeks_shown * 7); - - week = day / 7; - col = day % 7; - day_of_week = (display_start_day + day) % 7; - if (compress_weekend && day_of_week >= 5) { - /* In the compressed view Saturday is above Sunday and - both have just one row as opposed to 2 for all the - other days. */ - if (day_of_week == 5) { - *day_y = week * 2; - *rows = 1; - } else { - *day_y = week * 2 + 1; - *rows = 1; - col--; - } - /* Both Saturday and Sunday are in the same column. */ - *day_x = col; - } else { - /* If the weekend is compressed and the day is after - the weekend we have to move back a column. */ - if (compress_weekend) { - /* Calculate where the weekend column is. - Note that 5 is Saturday. */ - weekend_col = (5 + 7 - display_start_day) % 7; - if (col > weekend_col) - col--; - } - - *day_y = week * 2; - *rows = 2; - *day_x = col; - } - } else { - g_return_if_fail (day < 7); - - /* Calculate which box to place the day in, from 0-5. - Note that in the week view the weekends are always - compressed and share a box. */ - box = day; - day_of_week = (display_start_day + day) % 7; - weekend_box = (5 + 7 - display_start_day) % 7; - if (box > weekend_box) - box--; - - if (box < 3) - *day_x = 0; - else - *day_x = 1; - - row = (box % 3) * 2; - if (day_of_week < 5) { - *day_y = row; - *rows = 2; - } else if (day_of_week == 5) { - /* Saturday. */ - *day_y = row; - *rows = 1; - - } else { - /* Sunday. */ - *day_y = row + 1; - *rows = 1; - } - } -} - - -/* Returns TRUE if the event span is visible or FALSE if it isn't. - It also returns the number of days of the span that are visible. - Usually this can easily be determined by the start & end days and row of - the span, which are set in e_week_view_layout_event(). Though we need a - special case for the weekends when they are compressed, since the span may - not fit. */ -gboolean -e_week_view_layout_get_span_position (EWeekViewEvent *event, - EWeekViewEventSpan *span, - gint rows_per_cell, - gint rows_per_compressed_cell, - gint display_start_day, - gboolean multi_week_view, - gboolean compress_weekend, - gint *span_num_days) -{ - gint end_day_of_week; - - if (span->row >= rows_per_cell) - return FALSE; - - end_day_of_week = (display_start_day + span->start_day - + span->num_days - 1) % 7; - *span_num_days = span->num_days; - /* Check if the row will not be visible in compressed cells. */ - if (span->row >= rows_per_compressed_cell) { - if (multi_week_view) { - if (compress_weekend) { - /* If it ends on a Saturday and is 1 day long - we skip it, else we shorten it. If it ends - on a Sunday it must be 1 day long and we - skip it. */ - if (end_day_of_week == 5) { /* Sat */ - if (*span_num_days == 1) { - return FALSE; - } else { - (*span_num_days)--; - } - } else if (end_day_of_week == 6) { /* Sun */ - return FALSE; - } - } - } else { - /* All spans are 1 day long in the week view, so we - just skip it. */ - if (end_day_of_week > 4) - return FALSE; - } - } - - return TRUE; -} |