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1.1 root 1: /**************************************************************************\
2: * demownd.c -- module for the window with the test font.
3: * Includes the window procedure and an initialization routine.
4: *
5: * store the handle to the test font in the extra bytes of this window.
6: *
7: \**************************************************************************/
8:
9: #include <windows.h>
10: #include <string.h>
11: #include "ntfonts.h"
12:
13: #define GRIDCOLOR PALETTEINDEX (3)
14: #define TICKSPACE 10
15:
16:
17:
18: int initDemo(HWND hwndMain)
19: {
20: WNDCLASS wc;
21:
22: wc.style = CS_VREDRAW | CS_HREDRAW;
23: wc.lpfnWndProc = (WNDPROC)DemoWndProc;
24: wc.cbClsExtra = 0;
25: wc.cbWndExtra = 0;
26: wc.hInstance = hInst;
27: wc.hIcon = LoadIcon(hInst, "ntfontsIcon");
28: wc.hCursor = LoadCursor(NULL, IDC_ARROW);
29: wc.hbrBackground = NULL;
30: wc.lpszMenuName = NULL;
31: wc.lpszClassName = "Demo";
32:
33: if (!RegisterClass(&wc)) return (FALSE);
34:
35: hwndDemo = CreateWindow(
36: "Demo",
37: "TextOut()",
38: WS_CHILD | WS_CLIPSIBLINGS | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_VISIBLE |
39: WS_CAPTION | WS_SYSMENU | WS_THICKFRAME,
40: CHILDLEFT(2),
41: CHILDTOP,
42: GetSystemMetrics (SM_CXFULLSCREEN)/3 - 10,
43: GetSystemMetrics (SM_CYFULLSCREEN)/3,
44: hwndMain, NULL, hInst, NULL);
45:
46: if (!hwndDemo) return (FALSE);
47:
48:
49: return TRUE;
50: }
51:
52:
53:
54:
55: /**************************************************************************\
56: *
57: * function: DemoWndProc()
58: *
59: * input parameters: normal window procedure parameters.
60: *
61: * global variables:
62: * allglyphsGlobal - TRUE, then paint all of the glyphs.
63: * mapperflagsGlobal - input to SetMapperFlags().
64: \**************************************************************************/
65: LRESULT DemoWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
66: {
67: static HANDLE hPenGrid;
68: static LPLOGFONT lplf;
69: static LPTEXTMETRIC lptm;
70: static HFONT hfont;
71:
72: switch (message) {
73:
74:
75: /**********************************************************************\
76: * WMU_DEMOTOLF
77: *
78: * lParam - pointer to LOGFONT structure.
79: *
80: * User message. Fill up the demo LOGFONT from the HFONT
81: * in the extra bytes.
82: \**********************************************************************/
83: case WMU_DEMOTOLF: {
84: lplf = (LPLOGFONT) lParam;
85:
86: hfont = (HFONT) GetWindowLong (hwnd, GWL_USERDATA);
87: GetObject (hfont, sizeof(LOGFONT), lplf);
88: } return 0;
89:
90:
91:
92:
93: /**********************************************************************\
94: * WMU_LFTODEMO
95: *
96: * lParam - pointer to LOGFONT structure.
97: *
98: * User message. Use the input LOGFONT structure to create a new
99: * font for this window. Store the new font in the HFONT extra bytes.
100: \**********************************************************************/
101: case WMU_LFTODEMO: {
102: lplf = (LPLOGFONT) lParam;
103:
104: /* Get and delete the last font placed in this window. */
105: hfont = (HFONT) GetWindowLong (hwnd, GWL_USERDATA);
106: DeleteObject (hfont);
107:
108: /* Create a new logical font and set it into the windows extra bytes. */
109: hfont = CreateFontIndirect (lplf);
110: SetWindowLong (hwnd, GWL_USERDATA, (LONG) hfont);
111: InvalidateRect (hwnd, NULL, TRUE);
112: } return 0;
113:
114: /**********************************************************************\
115: * WMU_DEMOTOTM
116: *
117: * lParam - pointer to TEXTMETRIC structure.
118: *
119: * User message. Fill up the TEXTMETRIC from the HFONT
120: * in the extra bytes.
121: \**********************************************************************/
122: case WMU_DEMOTOTM: {
123: HDC hdc;
124:
125: lptm = (LPTEXTMETRIC) lParam;
126:
127: hfont = (HFONT) GetWindowLong (hwnd, GWL_USERDATA);
128:
129:
130: hdc = GetDC (hwnd);
131: SelectObject (hdc,hfont);
132: GetTextMetrics (hdc, lptm);
133: ReleaseDC (hwnd, hdc);
134: } return 0;
135:
136:
137:
138:
139:
140:
141:
142: /**********************************************************************\
143: * WM_CREATE
144: *
145: * Create pens for drawing with later.
146: \**********************************************************************/
147: case WM_CREATE:
148: hPenGrid = CreatePen (PS_SOLID, 1, GRIDCOLOR);
149: SetWindowLong (hwnd, GWL_USERDATA, (LONG) GetStockObject (SYSTEM_FONT));
150:
151: allglyphsGlobal =
152: mapperflagsGlobal = FALSE;
153:
154: break;
155:
156:
157: /**********************************************************************\
158: * WM_DESTROY
159: *
160: * Complement of the WM_CREATE message. Delete the pens that were
161: * created and then call postquitmessage.
162: \**********************************************************************/
163: case WM_DESTROY:
164: DeleteObject (hPenGrid);
165:
166: break;
167:
168:
169:
170: /**********************************************************************\
171: * WM_ERASEBKGND
172: *
173: * Offset the origin conditional on allglyphsGlobal. Grid the window.
174: \**********************************************************************/
175: case WM_ERASEBKGND: {
176: HDC hdc;
177: RECT rect;
178: int i;
179:
180: hdc = (HDC)wParam;
181:
182: GetClientRect (hwnd, &rect);
183: FillRect (hdc, &rect, GetStockObject (LTGRAY_BRUSH));
184:
185: if (!allglyphsGlobal) {
186: SetViewportOrgEx (hdc, rect.right /2, rect.bottom/2, NULL);
187: OffsetRect (&rect, -rect.right/2, -rect.bottom/2);
188: }
189:
190: SelectObject(hdc, hPenGrid);
191: /* Draw vertical lines. */
192: for (i = 0; i<= rect.right; i+=TICKSPACE){
193: MoveToEx (hdc, i, rect.top, NULL);
194: LineTo (hdc, i, rect.bottom);
195: MoveToEx (hdc, -i, rect.top, NULL);
196: LineTo (hdc, -i, rect.bottom);
197: }
198: MoveToEx (hdc, 1, rect.top, NULL);
199: LineTo (hdc, 1, rect.bottom);
200:
201: /* Draw horizontal lines. */
202: for (i = 0; i<= rect.bottom; i+=TICKSPACE){
203: MoveToEx (hdc, rect.left,i, NULL);
204: LineTo (hdc, rect.right,i);
205: MoveToEx (hdc, rect.left,-i, NULL);
206: LineTo (hdc, rect.right,-i);
207: }
208: MoveToEx (hdc, rect.left, 1, NULL);
209: LineTo (hdc, rect.right,1);
210: } return TRUE;
211:
212:
213:
214: /**********************************************************************\
215: * WM_PAINT
216: *
217: * Offset the origin conditional on allglyphsGlobal. Write the "Hello"
218: * string if allglyphsGlobal is FALSE, otherwise step though all of
219: * the glyphs (from TEXTMETRIC.tmFirstChar to TEXTMETRIC.tmLastChar)
220: * and write them in the window.
221: \**********************************************************************/
222: case WM_PAINT: {
223: HDC hdc;
224: PAINTSTRUCT ps;
225: RECT rect;
226: POINT point;
227: BYTE outByte;
228: LOGFONT lf;
229: TEXTMETRIC tm;
230:
231: hdc = BeginPaint(hwnd, &ps);
232: SetMapperFlags (hdc, mapperflagsGlobal);
233:
234: GetClientRect (hwnd, &rect);
235: hfont = (HFONT) GetWindowLong (hwnd, GWL_USERDATA);
236: SelectObject (hdc,hfont);
237: SetBkMode (hdc, TRANSPARENT);
238:
239:
240: if (!allglyphsGlobal) {
241: SetViewportOrgEx (hdc, rect.right /2, rect.bottom/2, NULL);
242: TextOut (hdc, 0, 0, "Hello", 5);
243: } else {
244: SetTextAlign (hdc, TA_LEFT | TA_TOP | TA_UPDATECP);
245: GetObject (hfont, sizeof(LOGFONT), &lf);
246: GetTextMetrics (hdc, &tm);
247:
248: MoveToEx (hdc, 0,0, NULL);
249:
250: for (outByte = tm.tmFirstChar; outByte <= tm.tmLastChar; outByte++) {
251:
252: GetCurrentPositionEx (hdc, &point);
253: if (point.x > (rect.right - lf.lfWidth)) {
254: point.x = 0;
255: point.y += lf.lfHeight;
256: MoveToEx (hdc, point.x, point.y, NULL);
257: }
258: if (point.y > rect.bottom) break;
259: if (outByte == MAXBYTE) break; // tm.tmLastChar is often 0xff
260:
261: TextOut (hdc, 0,0, &outByte, 1);
262:
263:
264: }
265: }
266:
267:
268: EndPaint (hwnd, &ps);
269:
270: } return FALSE;
271:
272:
273: default:
274: return (DefWindowProc(hwnd, message, wParam, lParam));
275: }
276: return (NULL);
277: }
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