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gdiplus: Implement GdipCreateRegionRgnData.

This commit is contained in:
Dmitry Timoshkov 2015-06-13 10:53:58 +03:00 committed by Alexandre Julliard
parent 01e5385882
commit a66d664505
2 changed files with 277 additions and 45 deletions
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257
dlls/gdiplus/region.c
View File

@ -1,5 +1,6 @@
/*
* Copyright (C) 2008 Google (Lei Zhang)
* Copyright (C) 2013 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -76,6 +77,28 @@ WINE_DEFAULT_DEBUG_CHANNEL(gdiplus);
#define FLAGS_NOFLAGS 0x0
#define FLAGS_INTPATH 0x4000
struct memory_buffer
{
const BYTE *buffer;
INT size, pos;
};
struct region_header
{
DWORD size;
DWORD checksum;
DWORD magic;
DWORD num_children;
};
struct path_header
{
DWORD size;
DWORD magic;
DWORD count;
DWORD flags;
};
/* Header size as far as header->size is concerned. This doesn't include
* header->size or header->checksum
*/
@ -729,15 +752,9 @@ static void write_element(const region_element* element, DWORD *buffer,
{
INT i;
const GpPath* path = element->elementdata.path;
struct _pathheader
{
DWORD size;
DWORD magic;
DWORD count;
DWORD flags;
} *pathheader;
struct path_header *pathheader;
pathheader = (struct _pathheader *)(buffer + *filled);
pathheader = (struct path_header *)(buffer + *filled);
pathheader->flags = is_integer_path(path) ? FLAGS_INTPATH : FLAGS_NOFLAGS;
/* 3 for headers, once again size doesn't count itself */
@ -778,14 +795,6 @@ static void write_element(const region_element* element, DWORD *buffer,
}
}
struct region_header
{
DWORD size;
DWORD checksum;
DWORD magic;
DWORD num_children;
};
/*****************************************************************************
* GdipGetRegionData [GDIPLUS.@]
*
@ -856,36 +865,190 @@ GpStatus WINGDIPAPI GdipGetRegionData(GpRegion *region, BYTE *buffer, UINT size,
return Ok;
}
static inline GpStatus read_dword(DWORD **buffer, INT *size, DWORD *ret)
static inline void init_memory_buffer(struct memory_buffer *mbuf, const BYTE *buffer, INT size)
{
if (*size < sizeof(DWORD))
return GenericError;
*ret = **buffer;
(*buffer)++;
(*size) -= sizeof(DWORD);
return Ok;
mbuf->buffer = buffer;
mbuf->size = size;
mbuf->pos = 0;
}
static GpStatus read_element(GpRegion *region, region_element *element, DWORD **buffer, INT *size)
static inline const void *buffer_read(struct memory_buffer *mbuf, INT size)
{
if (mbuf->size - mbuf->pos >= size)
{
const void *data = mbuf->buffer + mbuf->pos;
mbuf->pos += size;
return data;
}
return NULL;
}
static GpStatus read_element(struct memory_buffer *mbuf, GpRegion *region, region_element *node, INT *count)
{
GpStatus status;
const DWORD *type;
status = read_dword(buffer, size, &element->type);
if (status != Ok)
return status;
type = buffer_read(mbuf, sizeof(*type));
if (!type) return Ok;
switch (element->type)
TRACE("type %#x\n", *type);
node->type = *type;
switch (node->type)
{
case RegionDataInfiniteRect:
case RegionDataEmptyRect:
break;
default:
FIXME("region element type 0x%08x not supported\n", element->type);
return NotImplemented;
case CombineModeReplace:
case CombineModeIntersect:
case CombineModeUnion:
case CombineModeXor:
case CombineModeExclude:
case CombineModeComplement:
{
region_element *left, *right;
left = GdipAlloc(sizeof(region_element));
if (!left) return OutOfMemory;
right = GdipAlloc(sizeof(region_element));
if (!right)
{
GdipFree(left);
return OutOfMemory;
}
status = read_element(mbuf, region, left, count);
if (status == Ok)
{
status = read_element(mbuf, region, right, count);
if (status == Ok)
{
node->elementdata.combine.left = left;
node->elementdata.combine.right = right;
region->num_children += 2;
return Ok;
}
}
GdipFree(left);
GdipFree(right);
return status;
}
return Ok;
case RegionDataRect:
{
const GpRectF *rc;
rc = buffer_read(mbuf, sizeof(*rc));
if (!rc)
{
ERR("failed to read rect data\n");
return InvalidParameter;
}
node->elementdata.rect = *rc;
*count += 1;
return Ok;
}
case RegionDataPath:
{
GpPath *path;
const struct path_header *path_header;
const BYTE *types;
path_header = buffer_read(mbuf, sizeof(*path_header));
if (!path_header)
{
ERR("failed to read path header\n");
return InvalidParameter;
}
if (path_header->magic != VERSION_MAGIC)
{
ERR("invalid path header magic %#x\n", path_header->magic);
return InvalidParameter;
}
/* Windows always fails to create an empty path in a region */
if (!path_header->count)
{
TRACE("refusing to create an empty path in a region\n");
return GenericError;
}
status = GdipCreatePath(FillModeAlternate, &path);
if (status) return status;
node->elementdata.path = path;
if (!lengthen_path(path, path_header->count))
return OutOfMemory;
path->pathdata.Count = path_header->count;
if (path_header->flags & ~FLAGS_INTPATH)
FIXME("unhandled path flags %#x\n", path_header->flags);
if (path_header->flags & FLAGS_INTPATH)
{
const packed_point *pt;
DWORD i;
pt = buffer_read(mbuf, sizeof(*pt) * path_header->count);
if (!pt)
{
ERR("failed to read packed %u path points\n", path_header->count);
return InvalidParameter;
}
for (i = 0; i < path_header->count; i++)
{
path->pathdata.Points[i].X = (REAL)pt[i].X;
path->pathdata.Points[i].Y = (REAL)pt[i].Y;
}
}
else
{
const GpPointF *ptf;
ptf = buffer_read(mbuf, sizeof(*ptf) * path_header->count);
if (!ptf)
{
ERR("failed to read %u path points\n", path_header->count);
return InvalidParameter;
}
memcpy(path->pathdata.Points, ptf, sizeof(*ptf) * path_header->count);
}
types = buffer_read(mbuf, path_header->count);
if (!types)
{
ERR("failed to read %u path types\n", path_header->count);
return InvalidParameter;
}
memcpy(path->pathdata.Types, types, path_header->count);
if (path_header->count & 3)
{
if (!buffer_read(mbuf, 4 - (path_header->count & 3)))
{
ERR("failed to read rounding %u bytes\n", 4 - (path_header->count & 3));
return InvalidParameter;
}
}
*count += 1;
return Ok;
}
case RegionDataEmptyRect:
case RegionDataInfiniteRect:
*count += 1;
return Ok;
default:
FIXME("element type %#x is not supported\n", *type);
break;
}
return InvalidParameter;
}
/*****************************************************************************
@ -893,28 +1056,32 @@ static GpStatus read_element(GpRegion *region, region_element *element, DWORD **
*/
GpStatus WINGDIPAPI GdipCreateRegionRgnData(GDIPCONST BYTE *data, INT size, GpRegion **region)
{
struct region_header *region_header;
DWORD *buffer = (DWORD*)data;
const struct region_header *region_header;
struct memory_buffer mbuf;
GpStatus status;
INT count;
TRACE("(%p, %d, %p)\n", data, size, region);
if (!data || size < sizeof(*region_header) || !region)
if (!data || !size)
return InvalidParameter;
region_header = (struct region_header *)buffer;
if (region_header->magic != VERSION_MAGIC && region_header->magic != VERSION_MAGIC2)
init_memory_buffer(&mbuf, data, size);
region_header = buffer_read(&mbuf, sizeof(*region_header));
if (!region_header || (region_header->magic != VERSION_MAGIC &&
region_header->magic != VERSION_MAGIC2))
return InvalidParameter;
status = GdipCreateRegion(region);
if (status != Ok)
return status;
/* skip header */
buffer += 4;
size -= sizeof(*region_header);
count = 0;
status = read_element(&mbuf, *region, &(*region)->node, &count);
if (status == Ok && !count)
status = InvalidParameter;
status = read_element(*region, &(*region)->node, &buffer, &size);
if (status != Ok)
{
GdipDeleteRegion(*region);

65
dlls/gdiplus/tests/region.c
View File

@ -102,6 +102,56 @@ static void verify_region(HRGN hrgn, const RECT *rc)
rgn.data.rdh.rcBound.left, rgn.data.rdh.rcBound.top, rgn.data.rdh.rcBound.right, rgn.data.rdh.rcBound.bottom);
}
static void test_region_data(DWORD *data, UINT size, INT line)
{
GpStatus status;
GpRegion *region;
DWORD buf[256];
UINT needed, i;
status = GdipCreateRegionRgnData((BYTE *)data, size, &region);
/* Windows always fails to create an empty path in a region */
if (data[4] == RGNDATA_PATH)
{
struct path_header
{
DWORD size;
DWORD magic;
DWORD count;
DWORD flags;
} *path_header = (struct path_header *)(data + 5);
if (!path_header->count)
{
ok_(__FILE__, line)(status == GenericError, "expected GenericError, got %d\n", status);
return;
}
}
ok_(__FILE__, line)(status == Ok, "GdipCreateRegionRgnData error %d\n", status);
if (status != Ok) return;
needed = 0;
status = GdipGetRegionDataSize(region, &needed);
ok_(__FILE__, line)(status == Ok, "status %d\n", status);
ok_(__FILE__, line)(needed == size, "data size mismatch: %u != %u\n", needed, size);
memset(buf, 0xee, sizeof(buf));
needed = 0;
status = GdipGetRegionData(region, (BYTE *)buf, sizeof(buf), &needed);
ok_(__FILE__, line)(status == Ok, "status %08x\n", status);
ok_(__FILE__, line)(needed == size, "data size mismatch: %u != %u\n", needed, size);
size /= sizeof(DWORD);
for (i = 0; i < size - 1; i++)
{
if (i == 1) continue; /* data[1] never matches */
ok_(__FILE__, line)(data[i] == buf[i], "off %u: %#x != %#x\n", i, data[i], buf[i]);
}
/* some Windows versions fail to properly clear the aligned DWORD */
ok_(__FILE__, line)(data[size - 1] == buf[size - 1] || broken(data[size - 1] != buf[size - 1]),
"off %u: %#x != %#x\n", size - 1, data[size - 1], buf[size - 1]);
}
static void test_getregiondata(void)
{
GpStatus status;
@ -143,6 +193,7 @@ static void test_getregiondata(void)
expect_dword(buf + 3, 0);
expect_dword(buf + 4, RGNDATA_INFINITE_RECT);
expect_dword(buf + 6, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipSetEmpty(region);
ok(status == Ok, "status %08x\n", status);
@ -160,6 +211,7 @@ static void test_getregiondata(void)
expect_dword(buf + 3, 0);
expect_dword(buf + 4, RGNDATA_EMPTY_RECT);
expect_dword(buf + 6, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipSetInfinite(region);
ok(status == Ok, "status %08x\n", status);
@ -177,6 +229,7 @@ static void test_getregiondata(void)
expect_dword(buf + 3, 0);
expect_dword(buf + 4, RGNDATA_INFINITE_RECT);
expect_dword(buf + 6, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeleteRegion(region);
ok(status == Ok, "status %08x\n", status);
@ -205,6 +258,7 @@ static void test_getregiondata(void)
expect_float(buf + 7, 100.0);
expect_float(buf + 8, 200.0);
expect_dword(buf + 10, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
rect.X = 50;
rect.Y = 30;
@ -290,6 +344,7 @@ static void test_getregiondata(void)
expect_float(buf + 37, 22.0);
expect_float(buf + 38, 55.0);
expect_dword(buf + 39, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeleteRegion(region2);
ok(status == Ok, "status %08x\n", status);
@ -331,6 +386,7 @@ static void test_getregiondata(void)
expect_float(buf + 16, 28.0);
expect_dword(buf + 17, 0x81010100);
expect_dword(buf + 18, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
rect.X = 50;
rect.Y = 30;
@ -371,6 +427,7 @@ static void test_getregiondata(void)
expect_float(buf + 22, 10.0);
expect_float(buf + 23, 20.0);
expect_dword(buf + 24, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeleteRegion(region);
ok(status == Ok, "status %08x\n", status);
@ -403,6 +460,7 @@ static void test_getregiondata(void)
ok(*(buf + 8) == 0x4000 /* before win7 */ || *(buf + 8) == 0,
"expected 0x4000 or 0, got %08x\n", *(buf + 8));
expect_dword(buf + 10, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
/* Transform an empty region */
status = GdipCreateMatrix(&matrix);
@ -453,6 +511,7 @@ static void test_getregiondata(void)
expect(6, point[3].Y);
expect_dword(buf + 13, 0x81010100); /* 0x01010100 if we don't close the path */
expect_dword(buf + 14, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipTranslateRegion(region, 0.6, 0.8);
expect(Ok, status);
@ -480,6 +539,7 @@ static void test_getregiondata(void)
expect_float(buf + 16, 6.8);
expect_dword(buf + 17, 0x81010100); /* 0x01010100 if we don't close the path */
expect_dword(buf + 18, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);
@ -522,6 +582,7 @@ static void test_getregiondata(void)
expect_float(buf + 16, 6.2);
expect_dword(buf + 17, 0x01010100);
expect_dword(buf + 18, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);
@ -584,6 +645,7 @@ static void test_getregiondata(void)
ok(*(buf + 28) == 0x00000101 || *(buf + 28) == 0x43050101 /* Win 7 */,
"expected 00000101 or 43050101 got %08x\n", *(buf + 28));
expect_dword(buf + 29, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);
@ -627,6 +689,7 @@ static void test_getregiondata(void)
expect(23, point[3].Y);
expect_dword(buf + 13, 0x81010100); /* 0x01010100 if we don't close the path */
expect_dword(buf + 14, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);
@ -669,6 +732,7 @@ static void test_getregiondata(void)
expect_float(buf + 16, 2300.0);
expect_dword(buf + 17, 0x81010100); /* 0x01010100 if we don't close the path */
expect_dword(buf + 18, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);
@ -732,6 +796,7 @@ static void test_getregiondata(void)
*(buf + 33) == 0x43030303 /* 32-bit win7 */ || *(buf + 33) == 0x4c030303 /* 64-bit win7 */,
"expected 0x00030303 or 0x43030303 or 0x4c030303 got %08x\n", *(buf + 33));
expect_dword(buf + 34, 0xeeeeeeee);
test_region_data(buf, needed, __LINE__);
status = GdipDeletePath(path);
expect(Ok, status);