[apple/icu.git] / icuSources / samples / layout / clayout.c

/*
 *******************************************************************************
 *
 *   Copyright (C) 1999-2007, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  Layout.cpp
 *
 *   created on: 08/03/2000
 *   created by: Eric R. Mader
 */

#include <windows.h>
#include <stdio.h>

#include "playout.h"
#include "pflow.h"

#include "gdiglue.h"
#include "ucreader.h"

#include "arraymem.h"

#include "resource.h"

struct Context
{
    le_int32 width;
    le_int32 height;
    pf_flow *paragraph;
};

typedef struct Context Context;

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

#define APP_NAME "LayoutSample"

TCHAR szAppName[] = TEXT(APP_NAME);

void PrettyTitle(HWND hwnd, char *fileName)
{
    char title[MAX_PATH + 64];

    sprintf(title, "%s - %s", APP_NAME, fileName);

    SetWindowTextA(hwnd, title);
}

void InitParagraph(HWND hwnd, Context *context)
{
    SCROLLINFO si;

    if (context->paragraph != NULL) {
        // FIXME: does it matter what we put in the ScrollInfo
        // if the window's been minimized?
        if (context->width > 0 && context->height > 0) {
            pf_breakLines(context->paragraph, context->width, context->height);
        }

        si.cbSize = sizeof si;
        si.fMask = SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL;
        si.nMin = 0;
        si.nMax = pf_getLineCount(context->paragraph) - 1;
        si.nPage = context->height / pf_getLineHeight(context->paragraph);
        SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
    }
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    HWND hwnd;
    HACCEL hAccel;
    MSG msg;
    WNDCLASS wndclass;
    LEErrorCode status = LE_NO_ERROR;

    wndclass.style         = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc   = WndProc;
    wndclass.cbClsExtra    = 0;
    wndclass.cbWndExtra    = sizeof(LONG);
    wndclass.hInstance     = hInstance;
    wndclass.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wndclass.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
    wndclass.lpszMenuName  = szAppName;
    wndclass.lpszClassName = szAppName;

    if (!RegisterClass(&wndclass)) {
        MessageBox(NULL, TEXT("This demo only runs on Windows 2000!"), szAppName, MB_ICONERROR);

        return 0;
    }

    hAccel = LoadAccelerators(hInstance, szAppName);

    hwnd = CreateWindow(szAppName, NULL,
                        WS_OVERLAPPEDWINDOW | WS_VSCROLL,
                        CW_USEDEFAULT, CW_USEDEFAULT,
                        600, 400,
                        NULL, NULL, hInstance, NULL);

    ShowWindow(hwnd, iCmdShow);
    UpdateWindow(hwnd);

    while (GetMessage(&msg, NULL, 0, 0)) {
        if (!TranslateAccelerator(hwnd, hAccel, &msg)) {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    UnregisterClass(szAppName, hInstance);
    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    HDC hdc;
    Context *context;
    static le_int32 windowCount = 0;
    static fm_fontMap *fontMap = NULL;
    static rs_surface *surface = NULL;
    static gs_guiSupport *guiSupport = NULL;
    static le_font *font = NULL;

    switch (message) {
    case WM_CREATE:
    {
        LEErrorCode fontStatus = LE_NO_ERROR;

        hdc = GetDC(hwnd);
        guiSupport = gs_gdiGuiSupportOpen();
        surface = rs_gdiRenderingSurfaceOpen(hdc);

        fontMap = fm_gdiFontMapOpen(surface, "FontMap.GDI", 24, guiSupport, &fontStatus);
        font    = le_scriptCompositeFontOpen(fontMap);

        if (LE_FAILURE(fontStatus)) {
            ReleaseDC(hwnd, hdc);
            return -1;
        }

        context = NEW_ARRAY(Context, 1);

        context->width  = 600;
        context->height = 400;

        context->paragraph = pf_factory("Sample.txt", font, guiSupport);
        SetWindowLongPtr(hwnd, 0, (LONG_PTR) context);

        windowCount += 1;
        ReleaseDC(hwnd, hdc);

        PrettyTitle(hwnd, "Sample.txt");
        return 0;
    }

    case WM_SIZE:
    {
        context = (Context *) GetWindowLongPtr(hwnd, 0);
        context->width  = LOWORD(lParam);
        context->height = HIWORD(lParam);

        InitParagraph(hwnd, context);
        return 0;
    }

    case WM_VSCROLL:
    {
        SCROLLINFO si;
        le_int32 vertPos;

        si.cbSize = sizeof si;
        si.fMask = SIF_ALL;
        GetScrollInfo(hwnd, SB_VERT, &si);

        vertPos = si.nPos;

        switch (LOWORD(wParam))
        {
        case SB_TOP:
            si.nPos = si.nMin;
            break;

        case SB_BOTTOM:
            si.nPos = si.nMax;
            break;

        case SB_LINEUP:
            si.nPos -= 1;
            break;

        case SB_LINEDOWN:
            si.nPos += 1;
            break;

        case SB_PAGEUP:
            si.nPos -= si.nPage;
            break;

        case SB_PAGEDOWN:
            si.nPos += si.nPage;
            break;

        case SB_THUMBTRACK:
            si.nPos = si.nTrackPos;
            break;

        default:
            break;
        }

        si.fMask = SIF_POS;
        SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
        GetScrollInfo(hwnd, SB_VERT, &si);

        context = (Context *) GetWindowLongPtr(hwnd, 0);

        if (context->paragraph != NULL && si.nPos != vertPos) {
            ScrollWindow(hwnd, 0, pf_getLineHeight(context->paragraph) * (vertPos - si.nPos), NULL, NULL);
            UpdateWindow(hwnd);
        }

        return 0;
    }

    case WM_PAINT:
    {
        PAINTSTRUCT ps;
        SCROLLINFO si;
        le_int32 firstLine, lastLine;

        hdc = BeginPaint(hwnd, &ps);
        SetBkMode(hdc, TRANSPARENT);

        si.cbSize = sizeof si;
        si.fMask = SIF_ALL;
        GetScrollInfo(hwnd, SB_VERT, &si);

        firstLine = si.nPos;

        context = (Context *) GetWindowLongPtr(hwnd, 0);

        if (context->paragraph != NULL) {
            rs_gdiRenderingSurfaceSetHDC(surface, hdc);

            // NOTE: si.nPos + si.nPage may include a partial line at the bottom
            // of the window. We need this because scrolling assumes that the
            // partial line has been painted.
            lastLine  = min (si.nPos + (le_int32) si.nPage, pf_getLineCount(context->paragraph) - 1);

            pf_draw(context->paragraph, surface, firstLine, lastLine);
        }

        EndPaint(hwnd, &ps);
        return 0;
    }

    case WM_COMMAND:
        switch (LOWORD(wParam)) {
        case IDM_FILE_OPEN:
        {
            OPENFILENAMEA ofn;
            char szFileName[MAX_PATH], szTitleName[MAX_PATH];
            static char szFilter[] = "Text Files (.txt)\0*.txt\0"
                                     "All Files (*.*)\0*.*\0\0";

            ofn.lStructSize       = sizeof (OPENFILENAMEA);
            ofn.hwndOwner         = hwnd;
            ofn.hInstance         = NULL;
            ofn.lpstrFilter       = szFilter;
            ofn.lpstrCustomFilter = NULL;
            ofn.nMaxCustFilter    = 0;
            ofn.nFilterIndex      = 0;
            ofn.lpstrFile         = szFileName;
            ofn.nMaxFile          = MAX_PATH;
            ofn.lpstrFileTitle    = szTitleName;
            ofn.nMaxFileTitle     = MAX_PATH;
            ofn.lpstrInitialDir   = NULL;
            ofn.lpstrTitle        = NULL;
            ofn.Flags             = OFN_HIDEREADONLY | OFN_PATHMUSTEXIST;
            ofn.nFileOffset       = 0;
            ofn.nFileExtension    = 0;
            ofn.lpstrDefExt       = "txt";
            ofn.lCustData         = 0L;
            ofn.lpfnHook          = NULL;
            ofn.lpTemplateName    = NULL;

            szFileName[0] = '\0';

            if (GetOpenFileNameA(&ofn)) {
                pf_flow *newParagraph;

                hdc = GetDC(hwnd);
                rs_gdiRenderingSurfaceSetHDC(surface, hdc);

                newParagraph = pf_factory(szFileName, font, guiSupport);

                if (newParagraph != NULL) {
                    context = (Context *) GetWindowLongPtr(hwnd, 0);

                    if (context->paragraph != NULL) {
                        pf_close(context->paragraph);
                    }

                    context->paragraph = newParagraph;
                    InitParagraph(hwnd, context);
                    PrettyTitle(hwnd, szTitleName);
                    InvalidateRect(hwnd, NULL, TRUE);

                }
            }

            //ReleaseDC(hwnd, hdc);

            return 0;
        }

        case IDM_FILE_EXIT:
        case IDM_FILE_CLOSE:
            SendMessage(hwnd, WM_CLOSE, 0, 0);
            return 0;

        case IDM_HELP_ABOUTLAYOUTSAMPLE:
            MessageBox(hwnd, TEXT("Windows Layout Sample 0.1\n")
                             TEXT("Copyright (C) 1998-2005 By International Business Machines Corporation and others.\n")
                             TEXT("Author: Eric Mader"),
                       szAppName, MB_ICONINFORMATION | MB_OK);
            return 0;

        }
        break;


    case WM_DESTROY:
    {
        context = (Context *) GetWindowLongPtr(hwnd, 0);

        if (context != NULL && context->paragraph != NULL) {
            pf_close(context->paragraph);
        }

        DELETE_ARRAY(context);

        if (--windowCount <= 0) {
            le_fontClose(font);
            rs_gdiRenderingSurfaceClose(surface);
            gs_gdiGuiSupportClose(guiSupport);

            PostQuitMessage(0);
        }

        return 0;
    }

    default:
        return DefWindowProc(hwnd, message, wParam, lParam);
    }

    return 0;
}
Commit	Line	Data
46f4442e A	1	/*
	2	*******************************************************************************
	3	*
	4	* Copyright (C) 1999-2007, International Business Machines
	5	* Corporation and others. All Rights Reserved.
	6	*
	7	*******************************************************************************
	8	* file name: Layout.cpp
	9	*
	10	* created on: 08/03/2000
	11	* created by: Eric R. Mader
	12	*/
	13
	14	#include <windows.h>
	15	#include <stdio.h>
	16
	17	#include "playout.h"
	18	#include "pflow.h"
	19
	20	#include "gdiglue.h"
	21	#include "ucreader.h"
	22
	23	#include "arraymem.h"
	24
	25	#include "resource.h"
	26
	27	struct Context
	28	{
	29	le_int32 width;
	30	le_int32 height;
	31	pf_flow *paragraph;
	32	};
	33
	34	typedef struct Context Context;
	35
	36	LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
	37
	38	#define APP_NAME "LayoutSample"
	39
	40	TCHAR szAppName[] = TEXT(APP_NAME);
	41
	42	void PrettyTitle(HWND hwnd, char *fileName)
	43	{
	44	char title[MAX_PATH + 64];
	45
	46	sprintf(title, "%s - %s", APP_NAME, fileName);
	47
	48	SetWindowTextA(hwnd, title);
	49	}
	50
	51	void InitParagraph(HWND hwnd, Context *context)
	52	{
	53	SCROLLINFO si;
	54
	55	if (context->paragraph != NULL) {
	56	// FIXME: does it matter what we put in the ScrollInfo
	57	// if the window's been minimized?
	58	if (context->width > 0 && context->height > 0) {
	59	pf_breakLines(context->paragraph, context->width, context->height);
	60	}
	61
	62	si.cbSize = sizeof si;
	63	si.fMask = SIF_RANGE \| SIF_PAGE \| SIF_DISABLENOSCROLL;
	64	si.nMin = 0;
65	si.nMax = pf_getLineCount(context->paragraph) - 1;
66	si.nPage = context->height / pf_getLineHeight(context->paragraph);
67	SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
68	}
69	}
70
71	int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
72	{
73	HWND hwnd;
74	HACCEL hAccel;
75	MSG msg;
76	WNDCLASS wndclass;
77	LEErrorCode status = LE_NO_ERROR;
78
79	wndclass.style = CS_HREDRAW \| CS_VREDRAW;
80	wndclass.lpfnWndProc = WndProc;
81	wndclass.cbClsExtra = 0;
82	wndclass.cbWndExtra = sizeof(LONG);
83	wndclass.hInstance = hInstance;
84	wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
85	wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
86	wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
87	wndclass.lpszMenuName = szAppName;
88	wndclass.lpszClassName = szAppName;
89
90	if (!RegisterClass(&wndclass)) {
91	MessageBox(NULL, TEXT("This demo only runs on Windows 2000!"), szAppName, MB_ICONERROR);
92
93	return 0;
94	}
95
96	hAccel = LoadAccelerators(hInstance, szAppName);
97
98	hwnd = CreateWindow(szAppName, NULL,
99	WS_OVERLAPPEDWINDOW \| WS_VSCROLL,
100	CW_USEDEFAULT, CW_USEDEFAULT,
101	600, 400,
102	NULL, NULL, hInstance, NULL);
103
104	ShowWindow(hwnd, iCmdShow);
105	UpdateWindow(hwnd);
106
107	while (GetMessage(&msg, NULL, 0, 0)) {
108	if (!TranslateAccelerator(hwnd, hAccel, &msg)) {
109	TranslateMessage(&msg);
110	DispatchMessage(&msg);
111	}
112	}
113
114	UnregisterClass(szAppName, hInstance);
115	return msg.wParam;
116	}
117
118	LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
119	{
120	HDC hdc;
121	Context *context;
122	static le_int32 windowCount = 0;
123	static fm_fontMap *fontMap = NULL;
124	static rs_surface *surface = NULL;
125	static gs_guiSupport *guiSupport = NULL;
126	static le_font *font = NULL;
127
128	switch (message) {
129	case WM_CREATE:
130	{
131	LEErrorCode fontStatus = LE_NO_ERROR;
132
133	hdc = GetDC(hwnd);
134	guiSupport = gs_gdiGuiSupportOpen();
135	surface = rs_gdiRenderingSurfaceOpen(hdc);
136
137	fontMap = fm_gdiFontMapOpen(surface, "FontMap.GDI", 24, guiSupport, &fontStatus);
138	font = le_scriptCompositeFontOpen(fontMap);
139
140	if (LE_FAILURE(fontStatus)) {
141	ReleaseDC(hwnd, hdc);
142	return -1;
143	}
144
145	context = NEW_ARRAY(Context, 1);
146
147	context->width = 600;
148	context->height = 400;
149
150	context->paragraph = pf_factory("Sample.txt", font, guiSupport);
151	SetWindowLongPtr(hwnd, 0, (LONG_PTR) context);
152
153	windowCount += 1;
154	ReleaseDC(hwnd, hdc);
155
156	PrettyTitle(hwnd, "Sample.txt");
157	return 0;
158	}
159
160	case WM_SIZE:
161	{
162	context = (Context *) GetWindowLongPtr(hwnd, 0);
163	context->width = LOWORD(lParam);
164	context->height = HIWORD(lParam);
165
166	InitParagraph(hwnd, context);
167	return 0;
168	}
169
170	case WM_VSCROLL:
171	{
172	SCROLLINFO si;
173	le_int32 vertPos;
174
175	si.cbSize = sizeof si;
176	si.fMask = SIF_ALL;
177	GetScrollInfo(hwnd, SB_VERT, &si);
178
179	vertPos = si.nPos;
180
181	switch (LOWORD(wParam))
182	{
183	case SB_TOP:
184	si.nPos = si.nMin;
185	break;
186
187	case SB_BOTTOM:
188	si.nPos = si.nMax;
189	break;
190
191	case SB_LINEUP:
192	si.nPos -= 1;
193	break;
194
195	case SB_LINEDOWN:
196	si.nPos += 1;
197	break;
198
199	case SB_PAGEUP:
200	si.nPos -= si.nPage;
201	break;
202
203	case SB_PAGEDOWN:
204	si.nPos += si.nPage;
205	break;
206
207	case SB_THUMBTRACK:
208	si.nPos = si.nTrackPos;
209	break;
210
211	default:
212	break;
213	}
214
215	si.fMask = SIF_POS;
216	SetScrollInfo(hwnd, SB_VERT, &si, TRUE);
217	GetScrollInfo(hwnd, SB_VERT, &si);
218
219	context = (Context *) GetWindowLongPtr(hwnd, 0);
220
221	if (context->paragraph != NULL && si.nPos != vertPos) {
222	ScrollWindow(hwnd, 0, pf_getLineHeight(context->paragraph) * (vertPos - si.nPos), NULL, NULL);
223	UpdateWindow(hwnd);
224	}
225
226	return 0;
227	}
228
229	case WM_PAINT:
230	{
231	PAINTSTRUCT ps;
232	SCROLLINFO si;
233	le_int32 firstLine, lastLine;
234
235	hdc = BeginPaint(hwnd, &ps);
236	SetBkMode(hdc, TRANSPARENT);
237
238	si.cbSize = sizeof si;
239	si.fMask = SIF_ALL;
240	GetScrollInfo(hwnd, SB_VERT, &si);
241
242	firstLine = si.nPos;
243
244	context = (Context *) GetWindowLongPtr(hwnd, 0);
245
246	if (context->paragraph != NULL) {
247	rs_gdiRenderingSurfaceSetHDC(surface, hdc);
248
249	// NOTE: si.nPos + si.nPage may include a partial line at the bottom
250	// of the window. We need this because scrolling assumes that the
251	// partial line has been painted.
252	lastLine = min (si.nPos + (le_int32) si.nPage, pf_getLineCount(context->paragraph) - 1);
253
254	pf_draw(context->paragraph, surface, firstLine, lastLine);
255	}
256
257	EndPaint(hwnd, &ps);
258	return 0;
259	}
260
261	case WM_COMMAND:
262	switch (LOWORD(wParam)) {
263	case IDM_FILE_OPEN:
264	{
265	OPENFILENAMEA ofn;
266	char szFileName[MAX_PATH], szTitleName[MAX_PATH];
267	static char szFilter[] = "Text Files (.txt)\0*.txt\0"
268	"All Files (.)\0.\0\0";
269
270	ofn.lStructSize = sizeof (OPENFILENAMEA);
271	ofn.hwndOwner = hwnd;
272	ofn.hInstance = NULL;
273	ofn.lpstrFilter = szFilter;
274	ofn.lpstrCustomFilter = NULL;
275	ofn.nMaxCustFilter = 0;
276	ofn.nFilterIndex = 0;
277	ofn.lpstrFile = szFileName;
278	ofn.nMaxFile = MAX_PATH;
279	ofn.lpstrFileTitle = szTitleName;
280	ofn.nMaxFileTitle = MAX_PATH;
281	ofn.lpstrInitialDir = NULL;
282	ofn.lpstrTitle = NULL;
283	ofn.Flags = OFN_HIDEREADONLY \| OFN_PATHMUSTEXIST;
284	ofn.nFileOffset = 0;
285	ofn.nFileExtension = 0;
286	ofn.lpstrDefExt = "txt";
287	ofn.lCustData = 0L;
288	ofn.lpfnHook = NULL;
289	ofn.lpTemplateName = NULL;
290
291	szFileName[0] = '\0';
292
293	if (GetOpenFileNameA(&ofn)) {
294	pf_flow *newParagraph;
295
296	hdc = GetDC(hwnd);
297	rs_gdiRenderingSurfaceSetHDC(surface, hdc);
298
299	newParagraph = pf_factory(szFileName, font, guiSupport);
300
301	if (newParagraph != NULL) {
302	context = (Context *) GetWindowLongPtr(hwnd, 0);
303
304	if (context->paragraph != NULL) {
305	pf_close(context->paragraph);
306	}
307
308	context->paragraph = newParagraph;
309	InitParagraph(hwnd, context);
310	PrettyTitle(hwnd, szTitleName);
311	InvalidateRect(hwnd, NULL, TRUE);
312
313	}
314	}
315
316	//ReleaseDC(hwnd, hdc);
317
318	return 0;
319	}
320
321	case IDM_FILE_EXIT:
322	case IDM_FILE_CLOSE:
323	SendMessage(hwnd, WM_CLOSE, 0, 0);
324	return 0;
325
326	case IDM_HELP_ABOUTLAYOUTSAMPLE:
327	MessageBox(hwnd, TEXT("Windows Layout Sample 0.1\n")
328	TEXT("Copyright (C) 1998-2005 By International Business Machines Corporation and others.\n")
329	TEXT("Author: Eric Mader"),
330	szAppName, MB_ICONINFORMATION \| MB_OK);
331	return 0;
332
333	}
334	break;
335
336
337	case WM_DESTROY:
338	{
339	context = (Context *) GetWindowLongPtr(hwnd, 0);
340
341	if (context != NULL && context->paragraph != NULL) {
342	pf_close(context->paragraph);
343	}
344
345	DELETE_ARRAY(context);
346
347	if (--windowCount <= 0) {
348	le_fontClose(font);
349	rs_gdiRenderingSurfaceClose(surface);
350	gs_gdiGuiSupportClose(guiSupport);
351
352	PostQuitMessage(0);
353	}
354
355	return 0;
356	}
357
358	default:
359	return DefWindowProc(hwnd, message, wParam, lParam);
360	}
361
362	return 0;
363	}