dlls/gdi32/tests/mapping.c

   1 /*
   2  * Unit tests for mapping functions
   3  *
   4  * Copyright (c) 2005 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdio.h>
  23 #include <math.h>
  24
  25 #include "wine/test.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "winerror.h"
  30
  31
  32 static void test_modify_world_transform(void)
  33 {
  34     HDC hdc = GetDC(0);
  35     int ret;
  36
  37     ret = SetGraphicsMode(hdc, GM_ADVANCED);
  38     if(!ret) /* running in win9x so quit */
  39     {
  40         ReleaseDC(0, hdc);
  41         return;
  42     }
  43
  44     ret = ModifyWorldTransform(hdc, NULL, MWT_IDENTITY);
  45     ok(ret, "ret = %d\n", ret);
  46
  47     ret = ModifyWorldTransform(hdc, NULL, MWT_LEFTMULTIPLY);
  48     ok(!ret, "ret = %d\n", ret);
  49
  50     ret = ModifyWorldTransform(hdc, NULL, MWT_RIGHTMULTIPLY);
  51     ok(!ret, "ret = %d\n", ret);
  52
  53     ReleaseDC(0, hdc);
  54 }
  55
  56 static void test_SetWindowExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
  57 {
  58     SIZE windowExt, viewportExt;
  59     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
  60
  61     GetWindowOrgEx(hdc, &windowOrg);
  62     GetViewportOrgEx(hdc, &viewportOrg);
  63
  64     SetWindowExtEx(hdc, cx, cy, NULL);
  65     GetWindowExtEx(hdc, &windowExt);
  66     ok(windowExt.cx == cx && windowExt.cy == cy,
  67        "Window extension: Expected %dx%d, got %dx%d\n",
  68        cx, cy, windowExt.cx, windowExt.cy);
  69
  70     GetViewportExtEx(hdc, &viewportExt);
  71     ok(viewportExt.cx == expected_vp_cx && viewportExt.cy == expected_vp_cy,
  72         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
  73         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
  74
  75     GetWindowOrgEx(hdc, &windowOrgAfter);
  76     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
  77         "Window origin changed from (%d,%d) to (%d,%d)\n",
  78         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
  79
  80     GetViewportOrgEx(hdc, &viewportOrgAfter);
  81     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
  82         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
  83         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
  84 }
  85
  86 static void test_SetViewportExt(HDC hdc, LONG cx, LONG cy, LONG expected_vp_cx, LONG expected_vp_cy)
  87 {
  88     SIZE windowExt, windowExtAfter, viewportExt;
  89     POINT windowOrg, windowOrgAfter, viewportOrg, viewportOrgAfter;
  90
  91     GetWindowOrgEx(hdc, &windowOrg);
  92     GetViewportOrgEx(hdc, &viewportOrg);
  93     GetWindowExtEx(hdc, &windowExt);
  94
  95     SetViewportExtEx(hdc, cx, cy, NULL);
  96     GetViewportExtEx(hdc, &viewportExt);
  97     ok(viewportExt.cx == expected_vp_cx && viewportExt.cy == expected_vp_cy,
  98         "Viewport extents have not been properly adjusted: Expected %dx%d, got %dx%d\n",
  99         expected_vp_cx, expected_vp_cy, viewportExt.cx, viewportExt.cy);
 100
 101     GetWindowExtEx(hdc, &windowExtAfter);
 102     ok(windowExt.cx == windowExtAfter.cx && windowExt.cy == windowExtAfter.cy,
 103        "Window extension changed from %dx%d to %dx%d\n",
 104        windowExt.cx, windowExt.cy, windowExtAfter.cx, windowExtAfter.cy);
 105
 106     GetWindowOrgEx(hdc, &windowOrgAfter);
 107     ok(windowOrg.x == windowOrgAfter.x && windowOrg.y == windowOrgAfter.y,
 108         "Window origin changed from (%d,%d) to (%d,%d)\n",
 109         windowOrg.x, windowOrg.y, windowOrgAfter.x, windowOrgAfter.y);
 110
 111     GetViewportOrgEx(hdc, &viewportOrgAfter);
 112     ok(viewportOrg.x == viewportOrgAfter.x && viewportOrg.y == viewportOrgAfter.y,
 113         "Viewport origin changed from (%d,%d) to (%d,%d)\n",
 114         viewportOrg.x, viewportOrg.y, viewportOrgAfter.x, viewportOrgAfter.y);
 115 }
 116
 117 static void test_isotropic_mapping(void)
 118 {
 119     SIZE win, vp;
 120     HDC hdc = GetDC(0);
 121
 122     SetMapMode(hdc, MM_ISOTROPIC);
 123
 124     /* MM_ISOTROPIC is set up like MM_LOMETRIC.
 125        Initial values after SetMapMode():
 126        (1 inch = 25.4 mm)
 127
 128                        Windows 9x:               Windows NT:
 129        Window Ext:     254 x -254                HORZSIZE*10 x VERTSIZE*10
 130        Viewport Ext:   LOGPIXELSX x LOGPIXELSY   HORZRES x -VERTRES
 131
 132        To test without rounding errors, we have to use multiples of
 133        these values!
 134      */
 135
 136     GetWindowExtEx(hdc, &win);
 137     GetViewportExtEx(hdc, &vp);
 138
 139     test_SetViewportExt(hdc, 10 * vp.cx, 10 * vp.cy, 10 * vp.cx, 10 * vp.cy);
 140     test_SetWindowExt(hdc, win.cx, win.cy, 10 * vp.cx, 10 * vp.cy);
 141     test_SetWindowExt(hdc, 2 * win.cx, win.cy, 10 * vp.cx, 5 * vp.cy);
 142     test_SetWindowExt(hdc, win.cx, win.cy, 5 * vp.cx, 5 * vp.cy);
 143     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 144     test_SetViewportExt(hdc, vp.cx, 2 * vp.cy, vp.cx, vp.cy);
 145     test_SetViewportExt(hdc, 2 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 146     test_SetViewportExt(hdc, 4 * vp.cx, 2 * vp.cy, 2 * vp.cx, 2 * vp.cy);
 147     test_SetWindowExt(hdc, 4 * win.cx, 2 * win.cy, 2 * vp.cx, vp.cy);
 148     test_SetViewportExt(hdc, -2 * vp.cx, -4 * vp.cy, -2 * vp.cx, -vp.cy);
 149     test_SetViewportExt(hdc, -2 * vp.cx, -1 * vp.cy, -2 * vp.cx, -vp.cy);
 150     test_SetWindowExt(hdc, -4 * win.cx, -2 * win.cy, -2 * vp.cx, -vp.cy);
 151     test_SetWindowExt(hdc, 4 * win.cx, -4 * win.cy, -vp.cx, -vp.cy);
 152
 153     ReleaseDC(0, hdc);
 154 }
 155
 156 START_TEST(mapping)
 157 {
 158     test_modify_world_transform();
 159     test_isotropic_mapping();
 160 }