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ownerdrw.c
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ownerdrw.c
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// Meridian 59, Copyright 1994-2012 Andrew Kirmse and Chris Kirmse.
// All rights reserved.
//
// This software is distributed under a license that is described in
// the LICENSE file that accompanies it.
//
// Meridian is a registered trademark.
/*
* ownerdrw.c: Procedures for handling owner-drawn window controls.
*
* This file implements an owner-drawn list box or combo box control. The control can
* display bitmaps of objects; its behavior is controlled by the OD_* constants that
* the creator of the window should put in the GWL_USERDATA field of the control when
* it's created.
*/
#include "client.h"
/* Size of objects drawn in list box */
#define LIST_OBJECT_HEIGHT 16
#define LIST_OBJECT_WIDTH 16
/* Borders around list objects */
#define LIST_OBJECT_LEFT_BORDER 3
#define LIST_OBJECT_TOP_BORDER 2
#define LIST_OBJECT_RIGHT_BORDER 3
static HIMAGELIST g_hImageList = NULL;
static void DrawOwnerListItem(const DRAWITEMSTRUCT *lpdis, Bool selected, Bool combo);
/*****************************************************************************/
/*
* WindowBeginUpdate: Turn off redrawing for a list box so that it won't
* flash as items are added. WindowEndUpdate should then be called after
* all items are adaded, to cause the window to redraw.
*/
void WindowBeginUpdate(HWND hwnd)
{
SetWindowRedraw(hwnd, FALSE);
}
/*****************************************************************************/
/*
* WindowEndUpdate: Turn on redrawing for a window, and redraw it.
*/
void WindowEndUpdate(HWND hwnd)
{
SetWindowRedraw(hwnd, TRUE);
InvalidateRect(hwnd, NULL, TRUE);
}
/*****************************************************************************/
/*
* NOTE: All the procedures below are meant to work on either owner-drawn list
* boxes or owner-drawn combo boxes, because the code is virtually identical
* except for Windows messages. The last parameter to each function is
* True for combo boxes, and False for list boxes.
*/
/*****************************************************************************/
/*****************************************************************************/
/*
* OwnerListAddItem: Add an item to an item list box; it gets placed at
* given index. If index is -1, item is added to the end if list isn't sorted;
* if the list is sorted, the object is added in sorted order.
* Returns index of added item.
*/
int OwnerListAddItem(HWND hwnd, object_node *obj, int index, Bool combo, Bool quan)
{
char *name, desc[MAXNAME + 15];
int pos;
name = LookupNameRsc(obj->name_res);
/* If item is a number object, add its amount after the item's name */
if (quan && IsNumberObj(obj->id))
{
sprintf(desc, "%d %.*s", obj->amount, MAXNAME, name);
name = desc;
}
/* If player using an object, say so */
if (IsInUse(obj->id))
{
sprintf(desc, "%.*s %s", MAXNAME, name, GetString(hInst, IDS_INUSE));
name = desc;
}
if (index == -1)
pos = combo ? ComboBox_AddString(hwnd, name)
: ListBox_AddString(hwnd, name);
else pos = combo ? ComboBox_InsertString(hwnd, index, name)
: ListBox_InsertString(hwnd, index, name);
combo ? ComboBox_SetItemData(hwnd, pos, obj) : ListBox_SetItemData(hwnd, pos, obj);
return pos;
}
/*****************************************************************************/
/*
* OwnerListSetContents: Set the list box's contents to the items in the given
* list. Calls WindowBegin/EndUpdate to prevent flashing.
*/
void OwnerListSetContents(HWND hwnd, list_type contents, Bool combo, Bool quan)
{
list_type l;
WindowBeginUpdate(hwnd);
combo ? ComboBox_ResetContent(hwnd) : ListBox_ResetContent(hwnd);
for (l = contents; l != NULL; l = l->next)
OwnerListAddItem(hwnd, (object_node *) l->data, -1, combo, quan); /* Add to end */
WindowEndUpdate(hwnd);
}
/*****************************************************************************/
/*
* OwnerListRemoveItem: Remove the item from the list if it's there.
*/
void OwnerListRemoveItem(HWND hList, ID id, Bool combo)
{
int i, num_items = combo ? ComboBox_GetCount(hList) : ListBox_GetCount(hList);
object_node *obj;
for (i = 0; i < num_items; i++)
{
obj = combo ? (object_node *) ComboBox_GetItemData(hList, i) :
(object_node *) ListBox_GetItemData(hList, i);
if (GetObjId(obj->id) == GetObjId(id))
{
if (combo)
ComboBox_DeleteString(hList, i);
else
ListBox_DeleteString(hList, i);
return;
}
}
}
/*****************************************************************************/
/*
* OwnerListFindItem: Return the index of the object with the given id in the
* given list box, or -1 if it's not there.
*/
int OwnerListFindItem(HWND hList, ID id, Bool combo)
{
int i, num_items = combo ? ComboBox_GetCount(hList) : ListBox_GetCount(hList);
object_node *obj;
for (i=0; i < num_items; i++)
{
obj = combo ? (object_node *) ComboBox_GetItemData(hList, i) :
(object_node *) ListBox_GetItemData(hList, i);
if (GetObjId(obj->id) == GetObjId(id))
return i;
}
return -1;
}
/*****************************************************************************/
/*
* OwnerListChangeItem: Change attributes of given object in item list.
* We should reset icon & name string of the item in the list.
*/
void OwnerListChangeItem(HWND hwnd, object_node *obj, Bool combo, Bool quan)
{
int index;
if ((index = OwnerListFindItem(hwnd, obj->id, combo)) == -1)
return;
/* Delete old item; add new item */
combo ? ComboBox_DeleteString(hwnd, index) : ListBox_DeleteString(hwnd, index);
OwnerListAddItem(hwnd, obj, index, combo, quan);
}
/*****************************************************************************/
/*
* OwnerListFindObject: Return the object with the given id in the
* given list box, or NULL if it's not there.
*/
object_node *OwnerListFindObject(HWND hList, ID id, Bool combo)
{
int i, num_items = combo ? ComboBox_GetCount(hList) : ListBox_GetCount(hList);
object_node *obj;
for (i=0; i < num_items; i++)
{
obj = combo ? (object_node *) ComboBox_GetItemData(hList, i) :
(object_node *) ListBox_GetItemData(hList, i);
if (GetObjId(obj->id) == GetObjId(id))
return obj;
}
return NULL;
}
/*****************************************************************************/
/*
* ItemListGetId: Return the id of the object in the list box that currently
* has the focus (caret).
* Returns INVALID_ID if no item has caret.
* NOTE: This function does NOT work on combo boxes!!
*/
ID ItemListGetId(HWND hList)
{
object_node *obj;
int index;
/* Get id of currently focused item */
index = ListBox_GetCaretIndex(hList);
if (index == LB_ERR)
return INVALID_ID;
obj = (object_node *) ListBox_GetItemData(hList, index);
if (obj == NULL)
return INVALID_ID;
return obj->id;
}
/*****************************************************************************/
/*
* OwnerListCompareItem: Message handler for item list boxes.
*/
int OwnerListCompareItem(HWND hwnd, const COMPAREITEMSTRUCT *lpcis, Bool combo)
{
char buf1[MAXNAME], buf2[MAXNAME];
if (combo)
{
ComboBox_GetLBText(lpcis->hwndItem, lpcis->itemID1, buf1);
ComboBox_GetLBText(lpcis->hwndItem, lpcis->itemID2, buf2);
}
else
{
ListBox_GetText(lpcis->hwndItem, lpcis->itemID1, buf1);
ListBox_GetText(lpcis->hwndItem, lpcis->itemID2, buf2);
}
return stricmp(buf1, buf2);
}
/*****************************************************************************/
/*
* OwnerListMeasureItem: Message handler for item list boxes.
*/
void OwnerListMeasureItem(HWND hwnd, MEASUREITEMSTRUCT *lpmis, Bool combo)
{
int style, height;
/* Height of item is maximum of:
* 1) Bitmap height (if bitmap is present), plus borders
* 2) Text height, plus borders
*/
style = GetWindowLong(hwnd, GWL_USERDATA);
height = GetFontHeight(GetFont(FONT_LIST));
if (style & OD_DRAWOBJ)
height = max(LIST_OBJECT_HEIGHT, height);
lpmis->itemHeight = height + 2 * LIST_OBJECT_TOP_BORDER;
}
/*****************************************************************************/
/*
* OwnerListDrawItem: Message handler for item list boxes. Return TRUE iff
* message is handled.
*/
BOOL OwnerListDrawItem(HWND hwnd, const DRAWITEMSTRUCT *lpdis, Bool combo)
{
{
int iOldCaretItem = (int)GetProp(lpdis->hwndItem, "Caret");
int iNewCaretItem = SendMessage(lpdis->hwndItem, LB_GETCARETINDEX, 0, 0L);
if (GetFocus() != lpdis->hwndItem)
iNewCaretItem = -2;
if (iOldCaretItem != iNewCaretItem)
InvalidateRect(lpdis->hwndItem, NULL, FALSE);
SetProp(lpdis->hwndItem, "Caret", (HANDLE)iNewCaretItem);
}
switch (lpdis->itemAction)
{
case ODA_SELECT:
case ODA_DRAWENTIRE:
DrawOwnerListItem(lpdis, (Bool) (lpdis->itemState & ODS_SELECTED), combo);
break;
case ODA_FOCUS:
// ignored; DrawOwnerListItem() does this itself due to bad XOR ordering
break;
}
return TRUE;
}
/*****************************************************************************/
/*
* OwnerListDrawItemNoSelect: Message handler for item list boxes. Return TRUE
* message is handled.
* Doesn't draw selected objects differently from unselected ones, essentially
* disabling selections.
*/
BOOL OwnerListDrawItemNoSelect(HWND hwnd, const DRAWITEMSTRUCT *lpdis, Bool combo)
{
{
int iOldCaretItem = (int)GetProp(lpdis->hwndItem, "Caret");
int iNewCaretItem = SendMessage(lpdis->hwndItem, LB_GETCARETINDEX, 0, 0L);
if (GetFocus() != lpdis->hwndItem)
iNewCaretItem = -2;
if (iOldCaretItem != iNewCaretItem)
InvalidateRect(lpdis->hwndItem, NULL, FALSE);
SetProp(lpdis->hwndItem, "Caret", (HANDLE)iNewCaretItem);
}
switch (lpdis->itemAction)
{
case ODA_SELECT:
case ODA_DRAWENTIRE:
DrawOwnerListItem(lpdis, False, combo);
break;
case ODA_FOCUS:
// ignored; DrawOwnerListItem() does this itself due to bad XOR ordering
break;
}
return TRUE;
}
/*****************************************************************************/
/*
* DrawOwnerListItem: Draw an owner-draw list item, not including selection
* or focus.
* The item is drawn selected iff selected is True.
* (lpdis doesn't determine selection so that OwnerListDrawItemNoSelect can
* force item to be drawn without selection.)
*/
void DrawOwnerListItem(const DRAWITEMSTRUCT *lpdis, Bool selected, Bool combo)
{
char buf[MAXNAME];
object_node *obj;
int dc_state, style;
WORD y;
RECT r;
AREA area;
COLORREF crColorText;
HBRUSH hColorBg;
if (!lpdis || !IsWindow(lpdis->hwndItem) || !IsWindowVisible(lpdis->hwndItem))
return;
style = GetWindowLong(lpdis->hwndItem, GWL_USERDATA);
/* Set text mode of DC to transparent */
dc_state = SaveDC(lpdis->hDC);
SetBkMode(lpdis->hDC, OPAQUE);
obj = (object_node*)lpdis->itemData;
hColorBg = GetBrush(GetItemListColor(lpdis->hwndItem, (selected? SEL_BGD : UNSEL_BGD)));
if ((style & OD_ONLYSEL) && (style & (OD_DRAWOBJ | OD_DRAWICON)))
hColorBg = GetBrush(GetItemListColor(lpdis->hwndItem, UNSEL_BGD));
FillRect(lpdis->hDC, &lpdis->rcItem, hColorBg);
SetBkMode(lpdis->hDC, TRANSPARENT);
crColorText = GetColor(GetItemListColor(lpdis->hwndItem, (selected? SEL_FGD : UNSEL_FGD)));
if ((style & OD_ONLYSEL) && (style & (OD_DRAWOBJ | OD_DRAWICON)))
crColorText = GetColor(GetItemListColor(lpdis->hwndItem, UNSEL_FGD));
if (lpdis->itemState & ODS_DISABLED)
crColorText = GetSysColor(COLOR_GRAYTEXT);
if (style & OD_DRAWOBJ)
{
/* Draw small version of object's icon, centered vertically */
y = (lpdis->rcItem.top + (lpdis->rcItem.bottom - lpdis->rcItem.top) / 2)
- LIST_OBJECT_HEIGHT / 2;
area.x = LIST_OBJECT_LEFT_BORDER;
area.y = y;
area.cx = LIST_OBJECT_WIDTH;
area.cy = LIST_OBJECT_HEIGHT;
if (!(style & OD_ONLYSEL) || selected)
{
DrawStretchedObjectDefault(lpdis->hDC, obj, &area, hColorBg);
}
}
if (style & OD_DRAWICON)
{
if (!g_hImageList)
{
// set up image list first time we use it
HBITMAP hbmp = LoadBitmap(hInst, MAKEINTRESOURCE(IDB_IMAGELIST));
g_hImageList = ImageList_Create(16, 16, ILC_COLOR | ILC_MASK, 0, 1);
ImageList_AddMasked(g_hImageList, hbmp, RGB(0, 128, 128));
DeleteObject(hbmp);
//REVIEW: never doing a ImageList_Destroy(g_hImageList);
}
/* Draw chosen icon from image list, centered vertically */
if (!(style & OD_ONLYSEL) || selected)
{
int iIcon = OD_GETICONINDEX(style);
if (style & OD_NEXTICON)
iIcon++;
ImageList_Draw(g_hImageList, iIcon,
lpdis->hDC,
lpdis->rcItem.left+1, lpdis->rcItem.top+1,
ILD_TRANSPARENT);
}
}
/* Draw name of object */
r.top = lpdis->rcItem.top + LIST_OBJECT_TOP_BORDER;
r.bottom = lpdis->rcItem.bottom - LIST_OBJECT_TOP_BORDER;
r.right = lpdis->rcItem.right;
if (style & (OD_DRAWOBJ | OD_DRAWICON))
{
r.left = lpdis->rcItem.left + LIST_OBJECT_LEFT_BORDER + LIST_OBJECT_WIDTH +
LIST_OBJECT_RIGHT_BORDER;
}
else
{
r.left = lpdis->rcItem.left + LIST_OBJECT_LEFT_BORDER;
}
if (combo)
ComboBox_GetLBText(lpdis->hwndItem, lpdis->itemID, buf);
else
ListBox_GetText(lpdis->hwndItem, lpdis->itemID, buf);
SelectObject(lpdis->hDC, GetFont(FONT_LIST));
if (style & OD_COLORTEXT)
{
// if it's not a priveleged player, don't do the color effects
if ((PF_DM != GetPlayerFlags(obj->flags) &&
PF_SUPER != GetPlayerFlags(obj->flags) &&
PF_EVENTCHAR != GetPlayerFlags(obj->flags) &&
PF_CREATOR != GetPlayerFlags(obj->flags)))
{
style &= ~OD_COLORTEXT;
}
// get the color we'd prefer for this particular obj
if (style & OD_COLORTEXT)
crColorText = GetPlayerNameColor(obj->flags,NULL);
}
if (style & OD_COLORTEXT)
{
// draw a black halo around the text just to ensure it is visible
SetTextColor(lpdis->hDC, RGB(0, 0, 0));
OffsetRect(&r, 1, 0);
DrawText(lpdis->hDC, buf, strlen(buf), &r, DT_VCENTER | DT_LEFT | DT_NOPREFIX);
OffsetRect(&r, -2, 0);
DrawText(lpdis->hDC, buf, strlen(buf), &r, DT_VCENTER | DT_LEFT | DT_NOPREFIX);
OffsetRect(&r, 1, 1);
DrawText(lpdis->hDC, buf, strlen(buf), &r, DT_VCENTER | DT_LEFT | DT_NOPREFIX);
OffsetRect(&r, 0, -2);
DrawText(lpdis->hDC, buf, strlen(buf), &r, DT_VCENTER | DT_LEFT | DT_NOPREFIX);
OffsetRect(&r, 0, 1);
}
SetTextColor(lpdis->hDC, crColorText);
DrawText(lpdis->hDC, buf, strlen(buf), &r, DT_VCENTER | DT_LEFT | DT_NOPREFIX);
RestoreDC(lpdis->hDC, dc_state);
if (!combo &&
(GetFocus() == lpdis->hwndItem) &&
(SendMessage(lpdis->hwndItem, LB_GETCARETINDEX, 0, 0L) == (LRESULT)lpdis->itemID))
{
DrawFocusRect(lpdis->hDC, &lpdis->rcItem);
}
}