Chat-O-Matic/libs/libinterface/BitmapUtils.cpp

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/*
* Copyright 2009-2010, Pier Luigi Fiorini. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Pier Luigi Fiorini, pierluigi.fiorini@gmail.com
*/
#include <Path.h>
#include <private/IconUtils.h>
#include "BitmapUtils.h"
#define BEOS_ICON_ATTRIBUTE "BEOS:ICON"
#define BEOS_MINI_ICON_ATTRIBUTE "BEOS:M:STD_ICON"
#define BEOS_LARGE_ICON_ATTRIBUTE "BEOS:L:STD_ICON"
BBitmap*
ReadNodeIcon(const char* name, icon_size size, bool followSymlink)
{
BEntry entry(name, followSymlink);
entry_ref ref;
entry.GetRef(&ref);
BNode node(BPath(&ref).Path());
BBitmap* ret = new BBitmap(BRect(0, 0, (float)size - 1, (float)size - 1), B_RGBA32);
if (BIconUtils::GetIcon(&node, BEOS_ICON_ATTRIBUTE, BEOS_MINI_ICON_ATTRIBUTE,
BEOS_LARGE_ICON_ATTRIBUTE, size, ret) != B_OK) {
delete ret;
ret = NULL;
}
return ret;
}
BBitmap* IconFromResources(BResources* res, int32 num, icon_size size)
{
if (!res)
return NULL;
size_t nbytes = 0;
type_code type = B_VECTOR_ICON_TYPE;
color_space cspace = B_RGBA32;
// Try to find a vector icon
const void* data = res->LoadResource(type, num, &nbytes);
if (data == NULL) {
// Determine resource type from icon size
switch (size) {
case B_MINI_ICON:
type = B_MINI_ICON_TYPE;
break;
case B_LARGE_ICON:
type = B_LARGE_ICON_TYPE;
break;
default:
return NULL;
}
// Get bitmap icon
data = res->LoadResource(type, num, &nbytes);
if (data == NULL)
return NULL;
cspace = B_CMAP8;
}
BBitmap* icon = new BBitmap(BRect(0, 0, size - 1, size - 1), cspace);
if (icon->InitCheck() != B_OK)
return NULL;
switch (type) {
case B_VECTOR_ICON_TYPE:
if (BIconUtils::GetVectorIcon((const uint8*)data, nbytes, icon) != B_OK) {
delete icon;
return NULL;
}
break;
default:
icon->SetBits(data, size * size, 0, cspace);
}
return icon;
}