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Sweden-Number/dlls/gdi32/tests/clipping.c

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/*
* Unit test suite for clipping
*
* Copyright 2005 Huw Davies
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "wine/test.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
static void test_GetRandomRgn(void)
{
HWND hwnd = CreateWindowExA(0,"BUTTON","test",WS_VISIBLE|WS_POPUP,0,0,100,100,GetDesktopWindow(),0,0,0);
HDC hdc;
HRGN hrgn = CreateRectRgn(0, 0, 0, 0);
int ret;
RECT rc, rc2;
RECT ret_rc, window_rc;
ok( hwnd != 0, "CreateWindow failed\n" );
SetRect(&window_rc, 400, 300, 500, 400);
SetWindowPos(hwnd, HWND_TOPMOST, window_rc.left, window_rc.top,
window_rc.right - window_rc.left, window_rc.bottom - window_rc.top, 0 );
hdc = GetDC(hwnd);
ret = GetRandomRgn(hdc, hrgn, 1);
ok(ret == 0, "GetRandomRgn rets %d\n", ret);
ret = GetRandomRgn(hdc, hrgn, 2);
ok(ret == 0, "GetRandomRgn rets %d\n", ret);
ret = GetRandomRgn(hdc, hrgn, 3);
ok(ret == 0, "GetRandomRgn rets %d\n", ret);
/* Set a clip region */
SetRect(&rc, 20, 20, 80, 80);
IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
ret = GetRandomRgn(hdc, hrgn, 1);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
ret = GetRandomRgn(hdc, hrgn, 2);
ok(ret == 0, "GetRandomRgn rets %d\n", ret);
ret = GetRandomRgn(hdc, hrgn, 3);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
/* Move the clip to the meta and clear the clip */
SetMetaRgn(hdc);
ret = GetRandomRgn(hdc, hrgn, 1);
ok(ret == 0, "GetRandomRgn rets %d\n", ret);
ret = GetRandomRgn(hdc, hrgn, 2);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
ret = GetRandomRgn(hdc, hrgn, 3);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
/* Set a new clip (still got the meta) */
SetRect(&rc2, 10, 30, 70, 90);
IntersectClipRect(hdc, rc2.left, rc2.top, rc2.right, rc2.bottom);
ret = GetRandomRgn(hdc, hrgn, 1);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
ret = GetRandomRgn(hdc, hrgn, 2);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
IntersectRect(&rc2, &rc, &rc2);
ret = GetRandomRgn(hdc, hrgn, 3);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
ok(EqualRect(&rc2, &ret_rc), "GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
ret = GetRandomRgn(hdc, hrgn, SYSRGN);
ok(ret != 0, "GetRandomRgn rets %d\n", ret);
GetRgnBox(hrgn, &ret_rc);
if(GetVersion() & 0x80000000)
OffsetRect(&window_rc, -window_rc.left, -window_rc.top);
/* the window may be partially obscured so the region may be smaller */
IntersectRect( &window_rc, &ret_rc, &ret_rc );
ok(EqualRect(&window_rc, &ret_rc) ||
broken(IsRectEmpty(&ret_rc)), /* win95 */
"GetRandomRgn %d,%d - %d,%d\n",
ret_rc.left, ret_rc.top, ret_rc.right, ret_rc.bottom);
DeleteObject(hrgn);
ReleaseDC(hwnd, hdc);
DestroyWindow(hwnd);
}
static void verify_region(HRGN hrgn, const RECT *rc)
{
union
{
RGNDATA data;
char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
} rgn;
const RECT *rect;
DWORD ret;
ret = GetRegionData(hrgn, 0, NULL);
if (IsRectEmpty(rc))
ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
else
ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
if (!ret) return;
ret = GetRegionData(hrgn, sizeof(rgn), &rgn.data);
if (IsRectEmpty(rc))
ok(ret == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", ret);
else
ok(ret == sizeof(rgn.data.rdh) + sizeof(RECT), "expected sizeof(rgn), got %u\n", ret);
trace("size %u, type %u, count %u, rgn size %u, bound (%d,%d-%d,%d)\n",
rgn.data.rdh.dwSize, rgn.data.rdh.iType,
rgn.data.rdh.nCount, rgn.data.rdh.nRgnSize,
rgn.data.rdh.rcBound.left, rgn.data.rdh.rcBound.top,
rgn.data.rdh.rcBound.right, rgn.data.rdh.rcBound.bottom);
if (rgn.data.rdh.nCount != 0)
{
rect = (const RECT *)rgn.data.Buffer;
trace("rect (%d,%d-%d,%d)\n", rect->left, rect->top, rect->right, rect->bottom);
ok(EqualRect(rect, rc), "rects don't match\n");
}
ok(rgn.data.rdh.dwSize == sizeof(rgn.data.rdh), "expected sizeof(rdh), got %u\n", rgn.data.rdh.dwSize);
ok(rgn.data.rdh.iType == RDH_RECTANGLES, "expected RDH_RECTANGLES, got %u\n", rgn.data.rdh.iType);
if (IsRectEmpty(rc))
{
ok(rgn.data.rdh.nCount == 0, "expected 0, got %u\n", rgn.data.rdh.nCount);
ok(rgn.data.rdh.nRgnSize == 0 ||
broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
"expected 0, got %u\n", rgn.data.rdh.nRgnSize);
}
else
{
ok(rgn.data.rdh.nCount == 1, "expected 1, got %u\n", rgn.data.rdh.nCount);
ok(rgn.data.rdh.nRgnSize == sizeof(RECT) ||
broken(rgn.data.rdh.nRgnSize == 168), /* NT4 */
"expected sizeof(RECT), got %u\n", rgn.data.rdh.nRgnSize);
}
ok(EqualRect(&rgn.data.rdh.rcBound, rc), "rects don't match\n");
}
static void test_ExtCreateRegion(void)
{
static const RECT empty_rect;
static const RECT rc = { 111, 222, 333, 444 };
static const RECT rc_xformed = { 76, 151, 187, 262 };
union
{
RGNDATA data;
char buf[sizeof(RGNDATAHEADER) + sizeof(RECT)];
} rgn;
HRGN hrgn;
XFORM xform;
if (0) /* crashes under Win9x */
{
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, 0, NULL);
ok(!hrgn, "ExtCreateRegion should fail\n");
ok(GetLastError() == ERROR_INVALID_PARAMETER, "ERROR_INVALID_PARAMETER, got %u\n", GetLastError());
}
rgn.data.rdh.dwSize = 0;
rgn.data.rdh.iType = 0;
rgn.data.rdh.nCount = 0;
rgn.data.rdh.nRgnSize = 0;
SetRectEmpty(&rgn.data.rdh.rcBound);
memcpy(rgn.data.Buffer, &rc, sizeof(rc));
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
ok(!hrgn, "ExtCreateRegion should fail\n");
ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) - 1;
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
ok(!hrgn, "ExtCreateRegion should fail\n");
ok(GetLastError() == 0xdeadbeef, "0xdeadbeef, got %u\n", GetLastError());
/* although XP doesn't care about the type Win9x does */
rgn.data.rdh.iType = RDH_RECTANGLES;
rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
verify_region(hrgn, &empty_rect);
DeleteObject(hrgn);
rgn.data.rdh.nCount = 1;
SetRectEmpty(&rgn.data.rdh.rcBound);
memcpy(rgn.data.Buffer, &rc, sizeof(rc));
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, sizeof(rgn), &rgn.data);
ok(hrgn != 0, "ExtCreateRegion error %u\n", GetLastError());
verify_region(hrgn, &rc);
DeleteObject(hrgn);
rgn.data.rdh.dwSize = sizeof(rgn.data.rdh) + 1;
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(NULL, 1, &rgn.data);
ok(hrgn != 0 ||
broken(GetLastError() == 0xdeadbeef), /* NT4 */
"ExtCreateRegion error %u\n", GetLastError());
if(hrgn)
{
verify_region(hrgn, &rc);
DeleteObject(hrgn);
}
xform.eM11 = 0.5; /* 50% width */
xform.eM12 = 0.0;
xform.eM21 = 0.0;
xform.eM22 = 0.5; /* 50% height */
xform.eDx = 20.0;
xform.eDy = 40.0;
rgn.data.rdh.dwSize = sizeof(rgn.data.rdh);
SetLastError(0xdeadbeef);
hrgn = ExtCreateRegion(&xform, sizeof(rgn), &rgn.data);
ok(hrgn != 0, "ExtCreateRegion error %u/%x\n", GetLastError(), GetLastError());
verify_region(hrgn, &rc_xformed);
DeleteObject(hrgn);
}
static void test_GetClipRgn(void)
{
HDC hdc;
HRGN hrgn, hrgn2, hrgn3, hrgn4;
int ret;
/* Test calling GetClipRgn with NULL device context and region handles. */
ret = GetClipRgn(NULL, NULL);
ok(ret == -1, "Expected GetClipRgn to return -1, got %d\n", ret);
hdc = GetDC(NULL);
ok(hdc != NULL, "Expected GetDC to return a valid device context handle\n");
/* Test calling GetClipRgn with a valid device context and NULL region. */
ret = GetClipRgn(hdc, NULL);
ok(ret == 0 ||
ret == -1 /* Win9x */,
"Expected GetClipRgn to return 0, got %d\n", ret);
/* Initialize the test regions. */
hrgn = CreateRectRgn(100, 100, 100, 100);
ok(hrgn != NULL,
"Expected CreateRectRgn to return a handle to a new rectangular region\n");
hrgn2 = CreateRectRgn(1, 2, 3, 4);
ok(hrgn2 != NULL,
"Expected CreateRectRgn to return a handle to a new rectangular region\n");
hrgn3 = CreateRectRgn(1, 2, 3, 4);
ok(hrgn3 != NULL,
"Expected CreateRectRgn to return a handle to a new rectangular region\n");
hrgn4 = CreateRectRgn(1, 2, 3, 4);
ok(hrgn4 != NULL,
"Expected CreateRectRgn to return a handle to a new rectangular region\n");
/* Try getting a clipping region from the device context
* when the device context's clipping region isn't set. */
ret = GetClipRgn(hdc, hrgn2);
ok(ret == 0, "Expected GetClipRgn to return 0, got %d\n", ret);
/* The region passed to GetClipRgn should be unchanged. */
ret = EqualRgn(hrgn2, hrgn3);
ok(ret == 1,
"Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
/* Try setting and getting back a clipping region. */
ret = SelectClipRgn(hdc, hrgn);
ok(ret == NULLREGION,
"Expected SelectClipRgn to return NULLREGION, got %d\n", ret);
/* Passing a NULL region handle when the device context
* has a clipping region results in an error. */
ret = GetClipRgn(hdc, NULL);
ok(ret == -1, "Expected GetClipRgn to return -1, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn2);
ok(ret == 1, "Expected GetClipRgn to return 1, got %d\n", ret);
ret = EqualRgn(hrgn, hrgn2);
ok(ret == 1,
"Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
/* Try unsetting and then query the clipping region. */
ret = SelectClipRgn(hdc, NULL);
ok(ret == SIMPLEREGION,
"Expected SelectClipRgn to return SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, NULL);
ok(ret == 0 ||
ret == -1 /* Win9x */,
"Expected GetClipRgn to return 0, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn3);
ok(ret == 0, "Expected GetClipRgn to return 0, got %d\n", ret);
ret = EqualRgn(hrgn3, hrgn4);
ok(ret == 1,
"Expected EqualRgn to compare the two regions as equal, got %d\n", ret);
DeleteObject(hrgn4);
DeleteObject(hrgn3);
DeleteObject(hrgn2);
DeleteObject(hrgn);
ReleaseDC(NULL, hdc);
}
static void test_memory_dc_clipping(void)
{
HDC hdc;
HRGN hrgn, hrgn_empty;
HBITMAP hbmp;
RECT rc;
int ret;
hdc = CreateCompatibleDC(0);
hrgn_empty = CreateRectRgn(0, 0, 0, 0);
hrgn = CreateRectRgn(0, 0, 0, 0);
hbmp = CreateCompatibleBitmap(hdc, 100, 100);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 0, "expected 0, got %d\n", ret);
ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 1, "expected 1, got %d\n", ret);
ret = GetRgnBox(hrgn, &rc);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ok(rc.left == 0 && rc.top == 0 && rc.right == 1 && rc.bottom == 1,
"expected 0,0-1,1, got %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom);
ret = ExtSelectClipRgn(hdc, 0, RGN_COPY);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 0, "expected 0, got %d\n", ret);
SelectObject(hdc, hbmp);
ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 1, "expected 1, got %d\n", ret);
ret = GetRgnBox(hrgn, &rc);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ok(rc.left == 0 && rc.top == 0 && rc.right == 100 && rc.bottom == 100,
"expected 0,0-100,100, got %d,%d-%d,%d\n", rc.left, rc.top, rc.right, rc.bottom);
DeleteDC(hdc);
DeleteObject(hrgn);
DeleteObject(hrgn_empty);
DeleteObject(hbmp);
}
static void test_window_dc_clipping(void)
{
HDC hdc;
HRGN hrgn, hrgn_empty;
HWND hwnd;
RECT rc;
int ret, screen_width, screen_height;
/* Windows versions earlier than Win2k do not support the virtual screen metrics,
* so we fall back to the primary screen metrics. */
screen_width = GetSystemMetrics(SM_CXVIRTUALSCREEN);
if(!screen_width) screen_width = GetSystemMetrics(SM_CXSCREEN);
screen_height = GetSystemMetrics(SM_CYVIRTUALSCREEN);
if(!screen_height) screen_height = GetSystemMetrics(SM_CYSCREEN);
trace("screen resolution %d x %d\n", screen_width, screen_height);
hwnd = CreateWindowExA(0, "static", NULL, WS_POPUP,
-100, -100, screen_width * 2, screen_height * 2, 0, 0, 0, NULL);
hdc = GetWindowDC(0);
hrgn_empty = CreateRectRgn(0, 0, 0, 0);
hrgn = CreateRectRgn(0, 0, 0, 0);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 0, "expected 0, got %d\n", ret);
ret = ExtSelectClipRgn(hdc, hrgn_empty, RGN_DIFF);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 1, "expected 1, got %d\n", ret);
ret = GetRgnBox(hrgn, &rc);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ok(rc.left == 0 && rc.top == 0 && rc.right == screen_width && rc.bottom == screen_height,
"expected 0,0-%d,%d, got %d,%d-%d,%d\n", screen_width, screen_height,
rc.left, rc.top, rc.right, rc.bottom);
ret = ExtSelectClipRgn(hdc, 0, RGN_COPY);
ok(ret == SIMPLEREGION, "expected SIMPLEREGION, got %d\n", ret);
ret = GetClipRgn(hdc, hrgn);
ok(ret == 0, "expected 0, got %d\n", ret);
DeleteDC(hdc);
DeleteObject(hrgn);
DeleteObject(hrgn_empty);
DestroyWindow(hwnd);
}
START_TEST(clipping)
{
test_GetRandomRgn();
test_ExtCreateRegion();
test_GetClipRgn();
test_memory_dc_clipping();
test_window_dc_clipping();
}
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