diff options
Diffstat (limited to 'widgets/table/e-table-header.c')
| -rw-r--r-- | widgets/table/e-table-header.c | 814 |
1 files changed, 0 insertions, 814 deletions
diff --git a/widgets/table/e-table-header.c b/widgets/table/e-table-header.c deleted file mode 100644 index 6c0d69a82d..0000000000 --- a/widgets/table/e-table-header.c +++ /dev/null @@ -1,814 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * E-table-col-head.c: TableColHead implementation - * - * Author: - * Miguel de Icaza (miguel@gnu.org) - * - * (C) 1999 Ximian, Inc - */ -#include <config.h> -#include <string.h> -#include <gtk/gtkobject.h> -#include <gtk/gtksignal.h> -#include "e-table-header.h" -#include "e-table-defines.h" - -/* The arguments we take */ -enum { - ARG_0, - ARG_SORT_INFO, - ARG_WIDTH, - ARG_WIDTH_EXTRAS, -}; - -enum { - STRUCTURE_CHANGE, - DIMENSION_CHANGE, - REQUEST_WIDTH, - LAST_SIGNAL -}; - -static void eth_set_size (ETableHeader *eth, int idx, int size); -static void eth_calc_widths (ETableHeader *eth); - -static guint eth_signals [LAST_SIGNAL] = { 0, }; - -static GtkObjectClass *e_table_header_parent_class; - -struct two_ints { - int column; - int width; -}; - -static void -eth_set_width (ETableHeader *eth, int width) -{ - eth->width = width; -} - -static void -dequeue (ETableHeader *eth, int *column, int *width) -{ - GSList *head; - struct two_ints *store; - head = eth->change_queue; - eth->change_queue = eth->change_queue->next; - if (!eth->change_queue) - eth->change_tail = NULL; - store = head->data; - g_slist_free_1(head); - if (column) - *column = store->column; - if (width) - *width = store->width; - g_free(store); -} - -static gboolean -dequeue_idle (ETableHeader *eth) -{ - int column, width; - - dequeue (eth, &column, &width); - while (eth->change_queue && ((struct two_ints *) eth->change_queue->data)->column == column) - dequeue (eth, &column, &width); - - if (column == -1) - eth_set_width (eth, width); - else if (column < eth->col_count) - eth_set_size (eth, column, width); - if (eth->change_queue) - return TRUE; - else { - eth_calc_widths (eth); - eth->idle = 0; - return FALSE; - } -} - -static void -enqueue (ETableHeader *eth, int column, int width) -{ - struct two_ints *store; - store = g_new(struct two_ints, 1); - store->column = column; - store->width = width; - - eth->change_tail = g_slist_last(g_slist_append(eth->change_tail, store)); - if (!eth->change_queue) - eth->change_queue = eth->change_tail; - - if (!eth->idle) { - eth->idle = g_idle_add_full(G_PRIORITY_LOW, (GSourceFunc) dequeue_idle, eth, NULL); - } -} - -void -e_table_header_set_size (ETableHeader *eth, int idx, int size) -{ - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); - - enqueue (eth, idx, size); -} - -static void -eth_do_remove (ETableHeader *eth, int idx, gboolean do_unref) -{ - if (do_unref) - gtk_object_unref (GTK_OBJECT (eth->columns [idx])); - - memmove (ð->columns [idx], ð->columns [idx+1], - sizeof (ETableCol *) * (eth->col_count - idx - 1)); - eth->col_count--; -} - -static void -eth_destroy (GtkObject *object) -{ - ETableHeader *eth = E_TABLE_HEADER (object); - const int cols = eth->col_count; - int i; - - if (eth->sort_info) { - if (eth->sort_info_group_change_id) - gtk_signal_disconnect(GTK_OBJECT(eth->sort_info), - eth->sort_info_group_change_id); - gtk_object_unref(GTK_OBJECT(eth->sort_info)); - } - - if (eth->idle) - g_source_remove(eth->idle); - g_slist_foreach(eth->change_queue, (GFunc) g_free, NULL); - g_slist_free(eth->change_queue); - - /* - * Destroy columns - */ - for (i = cols - 1; i >= 0; i--){ - eth_do_remove (eth, i, TRUE); - } - - if (e_table_header_parent_class->destroy) - e_table_header_parent_class->destroy (object); -} - -static void -eth_group_info_changed(ETableSortInfo *info, ETableHeader *eth) -{ - enqueue(eth, -1, eth->nominal_width); -} - -static void -eth_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) -{ - ETableHeader *eth = E_TABLE_HEADER (object); - - switch (arg_id) { - case ARG_WIDTH: - eth->nominal_width = GTK_VALUE_DOUBLE (*arg); - enqueue(eth, -1, GTK_VALUE_DOUBLE (*arg)); - break; - case ARG_WIDTH_EXTRAS: - eth->width_extras = GTK_VALUE_DOUBLE (*arg); - enqueue(eth, -1, eth->nominal_width); - break; - case ARG_SORT_INFO: - if (eth->sort_info) { - if (eth->sort_info_group_change_id) - gtk_signal_disconnect(GTK_OBJECT(eth->sort_info), eth->sort_info_group_change_id); - gtk_object_unref(GTK_OBJECT(eth->sort_info)); - } - eth->sort_info = E_TABLE_SORT_INFO(GTK_VALUE_OBJECT (*arg)); - if (eth->sort_info) { - gtk_object_ref(GTK_OBJECT(eth->sort_info)); - eth->sort_info_group_change_id - = gtk_signal_connect(GTK_OBJECT(eth->sort_info), "group_info_changed", - GTK_SIGNAL_FUNC(eth_group_info_changed), eth); - } - enqueue(eth, -1, eth->nominal_width); - break; - default: - break; - } -} - -static void -eth_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) -{ - ETableHeader *eth = E_TABLE_HEADER (object); - - switch (arg_id) { - case ARG_SORT_INFO: - GTK_VALUE_OBJECT (*arg) = GTK_OBJECT(eth->sort_info); - break; - case ARG_WIDTH: - GTK_VALUE_DOUBLE (*arg) = eth->nominal_width; - break; - case ARG_WIDTH_EXTRAS: - GTK_VALUE_DOUBLE (*arg) = eth->width_extras; - break; - default: - arg->type = GTK_TYPE_INVALID; - break; - } -} - -static void -e_table_header_class_init (GtkObjectClass *object_class) -{ - object_class->destroy = eth_destroy; - object_class->set_arg = eth_set_arg; - object_class->get_arg = eth_get_arg; - - - e_table_header_parent_class = (gtk_type_class (gtk_object_get_type ())); - - gtk_object_add_arg_type ("ETableHeader::width", GTK_TYPE_DOUBLE, - GTK_ARG_READWRITE, ARG_WIDTH); - gtk_object_add_arg_type ("ETableHeader::width_extras", GTK_TYPE_DOUBLE, - GTK_ARG_READWRITE, ARG_WIDTH_EXTRAS); - gtk_object_add_arg_type ("ETableHeader::sort_info", GTK_TYPE_OBJECT, - GTK_ARG_READWRITE, ARG_SORT_INFO); - - eth_signals [STRUCTURE_CHANGE] = - gtk_signal_new ("structure_change", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ETableHeaderClass, structure_change), - gtk_marshal_NONE__NONE, - GTK_TYPE_NONE, 0); - eth_signals [DIMENSION_CHANGE] = - gtk_signal_new ("dimension_change", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ETableHeaderClass, dimension_change), - gtk_marshal_NONE__INT, - GTK_TYPE_NONE, 1, GTK_TYPE_INT); - eth_signals [REQUEST_WIDTH] = - gtk_signal_new ("request_width", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ETableHeaderClass, request_width), - gtk_marshal_INT__INT, - GTK_TYPE_INT, 1, GTK_TYPE_INT); - - gtk_object_class_add_signals (object_class, eth_signals, LAST_SIGNAL); -} - -static void -e_table_header_init (ETableHeader *eth) -{ - eth->col_count = 0; - eth->width = 0; - - eth->sort_info = NULL; - eth->sort_info_group_change_id = 0; - - eth->columns = NULL; - - eth->change_queue = NULL; - eth->change_tail = NULL; - - eth->width_extras = 0; -} - -/** - * e_table_header_new: - * - * Returns: A new @ETableHeader object. - */ -ETableHeader * -e_table_header_new (void) -{ - ETableHeader *eth; - - eth = gtk_type_new (e_table_header_get_type ()); - - return eth; -} - -static void -eth_update_offsets (ETableHeader *eth) -{ - int i; - int x = 0; - - for (i = 0; i < eth->col_count; i++){ - ETableCol *etc = eth->columns [i]; - - etc->x = x; - x += etc->width; - } -} - -static void -eth_do_insert (ETableHeader *eth, int pos, ETableCol *val) -{ - memmove (ð->columns [pos+1], ð->columns [pos], - sizeof (ETableCol *) * (eth->col_count - pos)); - eth->columns [pos] = val; - eth->col_count ++; -} - -/** - * e_table_header_add_column: - * @eth: the table header to add the column to. - * @tc: the ETableCol definition - * @pos: position where the ETableCol will go. - * - * This function adds the @tc ETableCol definition into the @eth ETableHeader - * at position @pos. This is the way you add new ETableCols to the - * ETableHeader. - * - * This function will emit the "structure_change" signal on the @eth object. - * The ETableCol is assumed - */ -void -e_table_header_add_column (ETableHeader *eth, ETableCol *tc, int pos) -{ - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); - g_return_if_fail (tc != NULL); - g_return_if_fail (E_IS_TABLE_COL (tc)); - g_return_if_fail (pos >= -1 && pos <= eth->col_count); - - if (pos == -1) - pos = eth->col_count; - eth->columns = g_realloc (eth->columns, sizeof (ETableCol *) * (eth->col_count + 1)); - - /* - * We are the primary owners of the column - */ - gtk_object_ref (GTK_OBJECT (tc)); - gtk_object_sink (GTK_OBJECT (tc)); - - eth_do_insert (eth, pos, tc); - - enqueue(eth, -1, eth->nominal_width); - gtk_signal_emit (GTK_OBJECT (eth), eth_signals [STRUCTURE_CHANGE]); -} - -/** - * e_table_header_get_column: - * @eth: the ETableHeader to query - * @column: the column inside the @eth. - * - * Returns: The ETableCol at @column in the @eth object - */ -ETableCol * -e_table_header_get_column (ETableHeader *eth, int column) -{ - g_return_val_if_fail (eth != NULL, NULL); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), NULL); - - if (column < 0) - return NULL; - - if (column >= eth->col_count) - return NULL; - - return eth->columns [column]; -} - -/** - * e_table_header_get_column_by_col_id: - * @eth: the ETableHeader to query - * @col_id: the col_id to search for. - * - * Returns: The ETableCol with col_idx = @col_idx in the @eth object - */ -ETableCol * -e_table_header_get_column_by_col_idx (ETableHeader *eth, int col_idx) -{ - int i; - g_return_val_if_fail (eth != NULL, NULL); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), NULL); - - for (i = 0; i < eth->col_count; i++) { - if (eth->columns[i]->col_idx == col_idx) { - return eth->columns [i]; - } - } - - return NULL; -} - -/** - * e_table_header_count: - * @eth: the ETableHeader to query - * - * Returns: the number of columns in this ETableHeader. - */ -int -e_table_header_count (ETableHeader *eth) -{ - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - return eth->col_count; -} - -/** - * e_table_header_index: - * @eth: the ETableHeader to query - * @col: the column to fetch. - * - * ETableHeaders contain the visual list of columns that the user will - * view. The visible columns will typically map to different columns - * in the ETableModel (because the user reordered the data for - * example). - * - * Returns: the column in the model that the @col column - * in the ETableHeader points to. */ -int -e_table_header_index (ETableHeader *eth, int col) -{ - g_return_val_if_fail (eth != NULL, -1); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), -1); - g_return_val_if_fail (col >= 0 && col < eth->col_count, -1); - - return eth->columns [col]->col_idx; -} - -/** - * e_table_header_get_index_at: - * @eth: the ETableHeader to query - * @x_offset: a pixel count from the beginning of the ETableHeader - * - * This will return the ETableHeader column that would contain - * the @x_offset pixel. - * - * Returns: the column that contains pixel @x_offset, or -1 - * if no column inside this ETableHeader contains that pixel. - */ -int -e_table_header_get_index_at (ETableHeader *eth, int x_offset) -{ - int i, total; - - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - total = 0; - for (i = 0; i < eth->col_count; i++){ - total += eth->columns [i]->width; - - if (x_offset < total) - return i; - } - - return -1; -} - -/** - * e_table_header_get_columns: - * @eth: The ETableHeader to query - * - * Returns: A NULL terminated array of the ETableCols - * contained in the ETableHeader @eth. Note that every - * returned ETableCol in the array has been referenced, to release - * this information you need to g_free the buffer returned - * and you need to gtk_object_unref every element returned - */ -ETableCol ** -e_table_header_get_columns (ETableHeader *eth) -{ - ETableCol **ret; - int i; - - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - ret = g_new (ETableCol *, eth->col_count + 1); - memcpy (ret, eth->columns, sizeof (ETableCol *) * eth->col_count); - ret [eth->col_count] = NULL; - - for (i = 0; i < eth->col_count; i++) { - gtk_object_ref(GTK_OBJECT(ret[i])); - } - - return ret; -} - -/** - * e_table_header_get_selected: - * @eth: The ETableHeader to query - * - * Returns: The number of selected columns in the @eth object. - */ -int -e_table_header_get_selected (ETableHeader *eth) -{ - int i; - int selected = 0; - - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - for (i = 0; i < eth->col_count; i++){ - if (eth->columns [i]->selected) - selected++; - } - - return selected; -} - -/** - * e_table_header_total_width: - * @eth: The ETableHeader to query - * - * Returns: the number of pixels used by the @eth object - * when rendered on screen - */ -int -e_table_header_total_width (ETableHeader *eth) -{ - int total, i; - - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - total = 0; - for (i = 0; i < eth->col_count; i++) - total += eth->columns [i]->width; - - return total; -} - -/** - * e_table_header_move: - * @eth: The ETableHeader to operate on. - * @source_index: the source column to move. - * @target_index: the target location for the column - * - * This function moves the column @source_index to @target_index - * inside the @eth ETableHeader. The signals "dimension_change" - * and "structure_change" will be emmited - */ -void -e_table_header_move (ETableHeader *eth, int source_index, int target_index) -{ - ETableCol *old; - - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); - g_return_if_fail (source_index >= 0); - g_return_if_fail (target_index >= 0); - g_return_if_fail (source_index < eth->col_count); - g_return_if_fail (target_index < eth->col_count + 1); /* Can be moved beyond the last item. */ - - if (source_index < target_index) - target_index --; - - old = eth->columns [source_index]; - eth_do_remove (eth, source_index, FALSE); - eth_do_insert (eth, target_index, old); - eth_update_offsets (eth); - - gtk_signal_emit (GTK_OBJECT (eth), eth_signals [DIMENSION_CHANGE]); - gtk_signal_emit (GTK_OBJECT (eth), eth_signals [STRUCTURE_CHANGE]); -} - -/** - * e_table_header_remove: - * @eth: The ETableHeader to operate on. - * @idx: the index to the column to be removed. - * - * Removes the column at @idx position in the ETableHeader @eth. - * This emmits the "structure_change" signal on the @eth object. - */ -void -e_table_header_remove (ETableHeader *eth, int idx) -{ - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); - g_return_if_fail (idx >= 0); - g_return_if_fail (idx < eth->col_count); - - eth_do_remove (eth, idx, TRUE); - enqueue(eth, -1, eth->nominal_width); - gtk_signal_emit (GTK_OBJECT (eth), eth_signals [STRUCTURE_CHANGE]); -} - -/* - * FIXME: deprecated? - */ -void -e_table_header_set_selection (ETableHeader *eth, gboolean allow_selection) -{ - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); -} - -static void -eth_set_size (ETableHeader *eth, int idx, int size) -{ - double expansion; - double old_expansion; - int min_width; - int left_width; - int total_extra; - int expandable_count; - int usable_width; - int i; - g_return_if_fail (eth != NULL); - g_return_if_fail (E_IS_TABLE_HEADER (eth)); - g_return_if_fail (idx >= 0); - g_return_if_fail (idx < eth->col_count); - - /* If this column is not resizable, don't do anything. */ - if (!eth->columns[idx]->resizeable) - return; - - expansion = 0; - min_width = 0; - left_width = 0; - expandable_count = -1; - - /* Calculate usable area. */ - for (i = 0; i < idx; i++) { - left_width += eth->columns[i]->width; - } - /* - 1 to account for the last pixel border. */ - usable_width = eth->width - left_width - 1; - - if (eth->sort_info) - usable_width -= e_table_sort_info_grouping_get_count(eth->sort_info) * GROUP_INDENT; - - /* Calculate minimum_width of stuff on the right as well as - * total usable expansion on the right. - */ - for (; i < eth->col_count; i++) { - min_width += eth->columns[i]->min_width + eth->width_extras; - if (eth->columns[i]->resizeable) { - expansion += eth->columns[i]->expansion; - expandable_count ++; - } - } - /* If there's no room for anything, don't change. */ - if (expansion == 0) - return; - - /* (1) If none of the columns to the right are expandable, use - * all the expansion space in this column. - */ - if(expandable_count == 0) { - eth->columns[idx]->expansion = expansion; - for (i = idx + 1; i < eth->col_count; i++) { - eth->columns[i]->expansion = 0; - } - return; - } - - total_extra = usable_width - min_width; - /* If there's no extra space, set all expansions to 0. */ - if (total_extra <= 0) { - for (i = idx; i < eth->col_count; i++) { - eth->columns[i]->expansion = 0; - } - return; - } - - /* If you try to resize smaller than the minimum width, it - * uses the minimum. */ - if (size < eth->columns[idx]->min_width + eth->width_extras) - size = eth->columns[idx]->min_width + eth->width_extras; - - /* If all the extra space will be used up in this column, use - * all the expansion and set all others to 0. - */ - if (size >= total_extra + eth->columns[idx]->min_width + eth->width_extras) { - eth->columns[idx]->expansion = expansion; - for (i = idx + 1; i < eth->col_count; i++) { - eth->columns[i]->expansion = 0; - } - return; - } - - /* The old_expansion used by columns to the right. */ - old_expansion = expansion; - old_expansion -= eth->columns[idx]->expansion; - /* Set the new expansion so that it will generate the desired size. */ - eth->columns[idx]->expansion = expansion * (((double)(size - (eth->columns[idx]->min_width + eth->width_extras)))/((double)total_extra)); - /* The expansion left for the columns on the right. */ - expansion -= eth->columns[idx]->expansion; - - /* (2) If the old columns to the right didn't have any - * expansion before, expand them evenly. old_expansion > 0 by - * expansion = SUM(i=idx to col_count -1, - * columns[i]->min_width) - columns[idx]->min_width) = - * SUM(non-negatives). - */ - if (old_expansion == 0) { - for (i = idx + 1; i < eth->col_count; i++) { - if (eth->columns[idx]->resizeable) { - /* expandable_count != 0 by (1) */ - eth->columns[i]->expansion = expansion / expandable_count; - } - } - return; - } - - /* Remove from total_extra the amount used for this column. */ - total_extra -= size - (eth->columns[idx]->min_width + eth->width_extras); - for (i = idx + 1; i < eth->col_count; i++) { - if (eth->columns[idx]->resizeable) { - /* old_expansion != 0 by (2) */ - eth->columns[i]->expansion *= expansion / old_expansion; - } - } -} - -/** - * e_table_header_col_diff: - * @eth: the ETableHeader to query. - * @start_col: the starting column - * @end_col: the ending column. - * - * Computes the number of pixels between the columns @start_col and - * @end_col. - * - * Returns: the number of pixels between @start_col and @end_col on the - * @eth ETableHeader object - */ -int -e_table_header_col_diff (ETableHeader *eth, int start_col, int end_col) -{ - int total, col; - - g_return_val_if_fail (eth != NULL, 0); - g_return_val_if_fail (E_IS_TABLE_HEADER (eth), 0); - - if (start_col < 0) - start_col = 0; - if (end_col > eth->col_count) - end_col = eth->col_count; - - total = 0; - for (col = start_col; col < end_col; col++){ - - total += eth->columns [col]->width; - } - - return total; -} - -static void -eth_calc_widths (ETableHeader *eth) -{ - int i; - int extra; - double expansion; - int last_position = 0; - double next_position = 0; - int last_resizable = -1; - /* - 1 to account for the last pixel border. */ - extra = eth->width - 1; - expansion = 0; - for (i = 0; i < eth->col_count; i++) { - extra -= eth->columns[i]->min_width + eth->width_extras; - if (eth->columns[i]->resizeable && eth->columns[i]->expansion > 0) - last_resizable = i; - expansion += eth->columns[i]->resizeable ? eth->columns[i]->expansion : 0; - eth->columns[i]->width = eth->columns[i]->min_width + eth->width_extras; - } - if (eth->sort_info) - extra -= e_table_sort_info_grouping_get_count(eth->sort_info) * GROUP_INDENT; - if (expansion == 0 || extra <= 0) - return; - for (i = 0; i < last_resizable; i++) { - next_position += extra * (eth->columns[i]->resizeable ? eth->columns[i]->expansion : 0)/expansion; - eth->columns[i]->width += next_position - last_position; - last_position = next_position; - } - eth->columns[i]->width += extra - last_position; - - eth_update_offsets (eth); - gtk_signal_emit (GTK_OBJECT (eth), eth_signals [DIMENSION_CHANGE]); -} - -GtkType -e_table_header_get_type (void) -{ - static GtkType type = 0; - - if (!type){ - GtkTypeInfo info = { - "ETableHeader", - sizeof (ETableHeader), - sizeof (ETableHeaderClass), - (GtkClassInitFunc) e_table_header_class_init, - (GtkObjectInitFunc) e_table_header_init, - NULL, /* reserved 1 */ - NULL, /* reserved 2 */ - (GtkClassInitFunc) NULL - }; - - type = gtk_type_unique (gtk_object_get_type (), &info); - } - - return type; -} - |