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ez_listview.c
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ez_listview.c
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/*
Copyright (C) 2007 ezQuake team
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.
$Id: ez_listview.c,v 1.78 2007/10/27 14:51:15 cokeman1982 Exp $
*/
#include "quakedef.h"
#include "keys.h"
#include "utils.h"
#include "common_draw.h"
#include "ez_listview.h"
#ifdef _WIN32
#pragma warning( disable : 4189 )
#endif
//
// Listview - Lays out the control.
//
static void EZ_listview_Layout(ez_listview_t *self)
{
ez_dllist_node_t *it = (self->sort_ascending ? self->items.head : self->items.tail);
ez_control_t *lvi = NULL;
int y = 0;
// Make sure the header hasn't moved.
EZ_control_SetPosition((ez_control_t *)self->header, 0, 0);
y += ((ez_control_t *)self->header)->height + self->row_gap;
// Position all the listview items according to the sort order.
if (self->items.count > 0)
{
while ((self->sort_ascending ? it->next : it->previous))
{
lvi = (ez_control_t *)it->payload;
EZ_control_SetPosition(lvi, 0, y);
y += lvi->height + self->row_gap;
it = (self->sort_ascending ? it->next : it->previous);
}
}
}
//
// Listview - On Mouse Click event handler for when a header label is clicked.
//
static int EZ_listview_OnHeaderMouseClick(ez_control_t *self, void *payload, mouse_state_t *ms)
{
int column = (int)payload;
ez_listview_t *listview = (ez_listview_t *)self;
// Change the sorting.
listview->sort_ascending = !listview->sort_ascending;
EZ_listview_SetSortColumn(listview, column);
// Sort!
EZ_listview_SortByColumn(listview);
EZ_listview_Layout(listview);
return 0;
}
//
// Listview - Creates a new listview and initializes it.
//
ez_listview_t *EZ_listview_Create(ez_tree_t *tree, ez_control_t *parent,
char *name, char *description,
int x, int y, int width, int height,
ez_control_flags_t flags)
{
ez_listview_t *listview = NULL;
// We have to have a tree to add the control to.
if (!tree)
{
return NULL;
}
listview = (ez_listview_t *)Q_malloc(sizeof(ez_listview_t));
memset(listview, 0, sizeof(ez_listview_t));
EZ_listview_Init(listview, tree, parent, name, description, x, y, width, height, flags);
return listview;
}
//
// Listview - Initializes a listview.
//
void EZ_listview_Init(ez_listview_t *listview, ez_tree_t *tree, ez_control_t *parent,
char *name, char *description,
int x, int y, int width, int height,
ez_control_flags_t flags)
{
int i;
ez_listview_subitem_t subitem;
ez_control_t *listview_ctrl = (ez_control_t *)listview;
// Initialize the inherited class first.
//EZ_scrollpane_Init(&listview->super, tree, parent, name, description, x, y, width, height, flags);
EZ_control_Init(&listview->super, tree, parent, name, description, x, y, width, height, flags);
((ez_control_t *)listview)->CLASS_ID = EZ_LISTVIEW_ID;
((ez_control_t *)listview)->ext_flags |= (flags | control_focusable | control_contained | control_resizeable);
// Overridden events.
//CONTROL_REGISTER_EVENT(listview_ctrl, EZ_listview_OnResize, OnResize, ez_control_t);
// Listview specific events.
CONTROL_REGISTER_EVENT(listview, EZ_listview_OnItemAdded, OnItemAdded, ez_listview_t);
CONTROL_REGISTER_EVENT(listview, EZ_listview_OnRowGapChanged, OnRowGapChanged, ez_listview_t);
CONTROL_REGISTER_EVENT(listview, EZ_listview_OnColumnGapChanged, OnColumnGapChanged, ez_listview_t);
CONTROL_REGISTER_EVENT(listview, EZ_listview_OnColumnWidthChanged, OnColumnWidthChanged, ez_listview_t);
CONTROL_REGISTER_EVENT(listview, EZ_listview_OnRowHeightChanged, OnRowHeightChanged, ez_listview_t);
// Create the header listviewitem and add subitems to it and set their text to "" to start with.
{
ez_label_t *curlabel = NULL;
listview->header = EZ_listviewitem_Create(listview_ctrl->control_tree, listview_ctrl, "List view header", "",
0, 0, listview_ctrl->width, 8, 0);
subitem.payload = NULL;
subitem.text = "HEJ";
// Init the labels in the header list view item.
for (i = 0; i < LISTVIEW_COLUMN_COUNT; i++)
{
EZ_listviewitem_AddColumn(listview->header, subitem, 30);
curlabel = listview->header->items[i];
// Pass the column index as payload (so we know what column to sort by when a header is clicked).
EZ_control_AddOnMouseClick((ez_control_t *)curlabel, (void *)i, EZ_listview_OnHeaderMouseClick);
EZ_control_SetAnchor((ez_control_t *)curlabel, anchor_left | anchor_top);
EZ_label_SetReadOnly(curlabel, true);
EZ_label_SetAutoSize(curlabel, false);
EZ_label_SetTextSelectable(curlabel, false);
EZ_control_SetBackgroundColor((ez_control_t *)curlabel, 0, 255, 0, 125); // TODO: Remove this.
}
// TODO: Add ez_control_t's that will act as resize handles between the column headers.
}
EZ_listview_Layout(listview);
}
//
// Listview - Cleans up a listview item when it is removed in a range.
//
static void EZ_listview_CleanupRangeItem(void *payload)
{
if (payload != NULL)
{
ez_listviewitem_t *item = (ez_listviewitem_t *)payload;
EZ_listviewitem_Destroy((ez_control_t *)item, true);
}
}
//
// Listview - Destroys a listview.
//
int EZ_listview_Destroy(ez_control_t *self, qbool destroy_children)
{
ez_listview_t *listview = (ez_listview_t *)self;
CONTROL_EVENT_HANDLER_CALL(NULL, self, ez_control_t, OnDestroy, destroy_children);
// TODO : Remove any event handlers.
// Cleanup listview items.
EZ_double_linked_list_RemoveRange(&listview->items, 0, listview->items.count - 1, EZ_listview_CleanupRangeItem);
EZ_control_Destroy(self, destroy_children);
return 0;
}
//
// Listview - Adds a listview item to the listview. Expects an array of column items as argument (and a count of how many).
//
void EZ_listview_AddItem(ez_listview_t *self, const ez_listview_subitem_t *sub_items, int subitem_count, void *payload)
{
int i;
ez_control_t *ctrl_lstview = (ez_control_t *)self;
ez_listviewitem_t *item;
item = EZ_listviewitem_Create(ctrl_lstview->control_tree, ctrl_lstview, "List view item", "",
0, 0, ctrl_lstview->width, self->row_height, 0);
for (i = 0; i < subitem_count; i++)
{
EZ_listviewitem_AddColumn(item, sub_items[i], 30); // TODO: Hmm what default width should we use?
}
EZ_double_linked_list_Add(&self->items, (void *)item);
CONTROL_RAISE_EVENT(NULL, self, ez_listview_t, OnItemAdded, NULL)
}
//
// Listview - An item was added to the listview.
//
int EZ_listview_OnItemAdded(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
// TODO: Maybe we should allow you to supress layout while adding a bunch of items.
EZ_listview_Layout(listview);
CONTROL_EVENT_HANDLER_CALL(NULL, listview, ez_listview_t, OnItemAdded, NULL);
return 0;
}
//
// Listview - Set the text of the header.
//
void EZ_listview_SetHeaderText(ez_listview_t *self, int column, const char *text)
{
if (column < 0 || column >= LISTVIEW_COLUMN_COUNT)
{
return;
}
EZ_label_SetText(self->header->items[column], text);
}
//
// Listview - Removes an item at a specific index.
//
void EZ_listview_RemoveItemByIndex(ez_listview_t *self, int index)
{
ez_listviewitem_t *item = EZ_double_linked_list_RemoveByIndex(&self->items, index);
if (item != NULL)
{
EZ_listviewitem_Destroy((ez_control_t *)item, true);
}
}
//
// Listview - Removes an item with a specific payload.
//
void EZ_listview_RemoveItemByPayload(ez_listview_t *self, void *payload)
{
ez_listviewitem_t *item = EZ_double_linked_list_RemoveByPayload(&self->items, payload);
if (item != NULL)
{
EZ_listviewitem_Destroy((ez_control_t *)item, true);
}
}
//
// Listview - Removes a range of items from a listview.
//
void EZ_listview_RemoveRange(ez_listview_t *self, int start, int end)
{
EZ_double_linked_list_RemoveRange(&self->items, start, end, EZ_listview_CleanupRangeItem);
}
//
// Listview - Compares two columns to each other (based on the sort column set in the listview object they are related with).
//
static int EZ_listview_ColumnCompareFunc(const void *it1, const void *it2)
{
int sci;
int res = 0;
ez_listviewitem_t *lvi1 = GET_LISTVIEW_ITEM(it1);
ez_listviewitem_t *lvi2 = GET_LISTVIEW_ITEM(it2);
ez_listview_t *lv = (ez_listview_t *)lvi1->super.parent; // We assume the item has a listview as parent, otherwise something is wrong.
sci = lv->sort_column_index;
if (sci < 0 || sci >= LISTVIEW_COLUMN_COUNT)
{
return 0;
}
res = strcmp(lvi1->items[sci]->text, lvi2->items[sci]->text);
return res; // (lv->sort_ascending) ? res : -res; // HMM! Nevermind this, since we're using a double linked list to store the listview items we can just layout them from tail -> head instead of doing a sort :)
}
//
// Listview - Sorts the list view by a user supplied function.
//
void EZ_listview_SortByUserFunc(ez_listview_t *self, PtFuncCompare compare_function)
{
EZ_double_linked_list_Sort(&self->items, EZ_listview_ColumnCompareFunc);
}
//
// Listview - Sorts the listview items by a specified column.
//
void EZ_listview_SortByColumn(ez_listview_t *self)
{
EZ_listview_SortByUserFunc(self, EZ_listview_ColumnCompareFunc);
}
//
// Listview - Set the column to sort by.
//
void EZ_listview_SetSortColumn(ez_listview_t *self, int column)
{
self->sort_column_index = column;
}
/*
//
// Listview - OnResize event handler.
//
int EZ_listview_OnResize(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
// Run the super class implementation.
EZ_scrollpane_OnResize(self, ext_event_info);
//EZ_listview_Layout(listview);
CONTROL_EVENT_HANDLER_CALL(NULL, self, ez_control_t, OnResize, NULL);
return 0;
}
*/
//
// Listview - Sets the row gap size of the listview.
//
void EZ_listview_SetRowGap(ez_listview_t *self, int gap)
{
self->row_gap = gap;
EZ_listview_Layout(self);
CONTROL_RAISE_EVENT(NULL, self, ez_listview_t, OnRowGapChanged, NULL);
}
//
// Listview - The row gap size has changed.
//
int EZ_listview_OnRowGapChanged(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
EZ_listview_Layout(listview);
CONTROL_EVENT_HANDLER_CALL(NULL, listview, ez_listview_t, OnRowGapChanged, ext_event_info);
return 0;
}
//
// Listview - Sets the column gap size of the listview.
//
void EZ_listview_SetColumnGap(ez_listview_t *self, int gap)
{
self->col_gap = gap;
CONTROL_RAISE_EVENT(NULL, self, ez_listview_t, OnRowGapChanged, NULL);
}
//
// Listview - The column gap size has changed.
//
int EZ_listview_OnColumnGapChanged(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
ez_dllist_node_t *it = listview->items.head;
ez_listviewitem_t *lvi = NULL;
// Update all listview items to know about the new gap size.
if (listview->items.count > 0)
{
while (it->next)
{
lvi = (ez_listviewitem_t *)it->payload;
EZ_listviewitem_SetColumnGap(lvi, listview->col_gap);
it = it->next;
}
}
EZ_listview_Layout(listview);
CONTROL_EVENT_HANDLER_CALL(NULL, listview, ez_listview_t, OnColumnGapChanged, ext_event_info);
return 0;
}
//
// Listview - Set the width of a column.
//
void EZ_listview_SetColumnWidth(ez_listview_t *self, int column, int width)
{
ez_listview_t *listview = (ez_listview_t *)self;
if (column < 0 || column >= LISTVIEW_COLUMN_COUNT)
return;
self->col_widths[column] = width;
CONTROL_RAISE_EVENT(NULL, listview, ez_listview_t, OnColumnWidthChanged, (void *)column);
}
//
// Listview - The width of a column has changed.
//
int EZ_listview_OnColumnWidthChanged(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
ez_dllist_node_t *it = listview->items.head;
ez_listviewitem_t *lvi = NULL;
int column = (int)ext_event_info;
if (listview->items.count > 0)
{
while (it->next)
{
lvi = (ez_listviewitem_t *)it->payload;
EZ_listviewitem_SetColumnWidth(lvi, column, listview->col_widths[column]);
it = it->next;
}
}
CONTROL_EVENT_HANDLER_CALL(NULL, listview, ez_listview_t, OnColumnWidthChanged, ext_event_info);
return 0;
}
//
// Listview - Set the width of a column.
//
void EZ_listview_SetRowHeight(ez_listview_t *self, int row_height)
{
self->row_height = row_height;
CONTROL_RAISE_EVENT(NULL, self, ez_listview_t, OnRowHeightChanged, NULL);
}
//
// Listview - The height of the rows has changed.
//
int EZ_listview_OnRowHeightChanged(ez_control_t *self, void *ext_event_info)
{
ez_listview_t *listview = (ez_listview_t *)self;
ez_dllist_node_t *it = listview->items.head;
ez_control_t *lvi = NULL;
if (listview->items.count > 0)
{
while (it->next)
{
lvi = (ez_control_t *)it->payload;
EZ_control_SetSize(lvi, lvi->width, lvi->height);
it = it->next;
}
}
CONTROL_EVENT_HANDLER_CALL(NULL, listview, ez_listview_t, OnRowHeightChanged, ext_event_info);
return 0;
}