test.c

一个很好的SDL建立应用程序界面的例子

			case SDLK_DOWN:
				incTListEntry(tbox_test, 1);
				break;

			case SDLK_PAGEUP:
				decTListEntry(tbox_test, 10);
				break;

			case SDLK_PAGEDOWN:
				incTListEntry(tbox_test, 10);
				break;

#ifdef DEBUG
			case SDLK_F1:
				dump_widget_list();
				break;
#endif

			default:
				break;
		}
	}
}

//
//		The Main Program
//

#ifdef	WIN32
int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
#else
int main(int argc, char *argv[])
#endif
{
	SDL_Event	event;
#ifdef LINUX
	bool				isX11 = FALSE;
	int				x, y, w, h;
	int				x11screen;
	SDL_SysWMinfo	info;
#endif
	char		*cap = NULL;
	BUTTON	*btn = NULL;
	BUTTON	*tbbtn1 = NULL;
	BUTTON	*tbbtn2 = NULL;
	CHECKBOX	*chkb = NULL;
	int		i, j, chr;

	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) != 0)
	{
		printf("\nUnable to initialize SDL: %s\n", SDL_GetError());
		return 1;
	}

	screen = SDL_SetVideoMode(SCREEN_PIXEL_WIDTH, SCREEN_PIXEL_HEIGHT, SCREEN_PIXEL_DEPTH, 0);

	if (screen == NULL)
	{
		printf("\nUnable to set video mode: %s\n", SDL_GetError());
		exit(1);
	}

	atexit(SDL_Quit);
	atexit(widgetQuit);

	cap = strstr(caption, "x");
	sprintf(cap, "%d.%d.%d", VERNO, MAJORREV, MINORREV);
	SDL_WM_SetCaption(caption, NULL);
	SDL_EnableUNICODE(1);
	SDL_EnableKeyRepeat(KB_DELAY, KB_INTERVAL);

#ifdef LINUX					// put the window where we want it (won't work in WIN32 or OS X)
	SDL_VERSION(&info.version);

	if (SDL_GetWMInfo(&info) > 0)
	{
		if (info.subsystem == SDL_SYSWM_X11)
			isX11 = TRUE;
	}

	if (isX11)
	{
		info.info.x11.lock_func();
		x11screen = DefaultScreen(info.info.x11.display);
		w = DisplayWidth(info.info.x11.display, x11screen);
		h = DisplayHeight(info.info.x11.display, x11screen);
		x = (w - screen->w) / 2;

		if (x + screen->w > w)					// if centering x won't fit,
			x = WINDOW_X_POSITION;				// use arbitrary horizontal position
		y = (h - screen->h) / 2;

		if (y + screen->h > h)					// if centering y won't fit,
			y = WINDOW_Y_POSITION;				// use arbitrary vertical position

		if (x >= 0 && y >= 0)
			XMoveWindow(info.info.x11.display, info.info.x11.wmwindow, x, y);

		info.info.x11.unlock_func();
	}
#endif

	initWidgets();				// initialize widget video

	menu = newMenu(0, 0, SCREEN_PIXEL_WIDTH, 16, black, yellow, white, dyellow);
	btn = newButton(0, 0, 0, 0, 0, 0, " File ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, fileButtonCB);
	addButton(menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Edit ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, editButtonCB);
	addButton(menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Configure ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, configButtonCB);
	addButton(menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Help ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpButtonCB);
	addButton(menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " About ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutButtonCB);
	addButton(menu, btn, FALSE);
	showWidget(menu);

	options = newMenu(0, FONT_HEIGHT + 4, SCREEN_PIXEL_WIDTH, 16, black, green, lgreen, dgreen);
	chkb = newCheckBox(0, 0, 0, 0, 0, 0, "Check box", &checkflag);
	attachCallBack(chkb, SDL_MOUSEBUTTONDOWN, checkBoxCB);
	addCheckBox(options, chkb, TRUE);
	chkb = newCheckBox(0, 0, 0, 0, 0, 0, "Another check box", &anotherflag);
	attachCallBack(chkb, SDL_MOUSEBUTTONDOWN, checkBoxCB);
	addCheckBox(options, chkb, TRUE);
	chkb = newCheckBox(0, 0, 0, 0, 0, 0, "Toggle me", &toggleflag);
	attachCallBack(chkb, SDL_MOUSEBUTTONDOWN, checkBoxCB);
	addCheckBox(options, chkb, TRUE);
	showWidget(options);

	filename = newMenu(0, FONT_HEIGHT * 2 + 8, SCREEN_PIXEL_WIDTH, 16, black, gray, lgray, black);
	addLabel(filename, newLabel(0, 0, 0, 0, 0, 0, "File: "), FALSE);
	filelabel = newLabel(0, 0, 0, 0, 0, 0, " No file selected, use File\xc4\x1aOpen to select a file ");
	filelabel->w = SCREEN_PIXEL_WIDTH - 8 * FONT_WIDTH;
	addLabel(filename, filelabel, FALSE);
	showWidget(filename);

	file_menu = newVMenu(2, FONT_HEIGHT + 4, 0, 0, black, lgray, white, gray);
	btn = newButton(0, 0, 0, 0, 0, 0, " Open ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, openButtonCB);
	addButton(file_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Save ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, saveButtonCB);
	addButton(file_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Close ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, closeButtonCB);
	addButton(file_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " Exit ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, exitButtonCB);
	addButton(file_menu, btn, FALSE);

	help_menu = newVMenu(30, 80, 0, 0, black, yellow, white, gray);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpMenuCB);
	addButton(help_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, "         Help");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpMenuCB);
	addButton(help_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpMenuCB);
	addButton(help_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " No help menu available ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpMenuCB);
	addButton(help_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, helpMenuCB);
	addButton(help_menu, btn, FALSE);

	about_menu = newVMenu(100, 110, 0, 0, black, cyan, dblue, blue);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, "Test of Simple Widget C Code for SDL");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, "    (C) 2004 by Jeffery L. Post ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);
	btn =  newButton(0, 0, 0, 0, 0, 0, "    GNU General Public License ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);
	btn = newButton(0, 0, 0, 0, 0, 0, " ");
	attachCallBack(btn, SDL_MOUSEBUTTONDOWN, aboutMenuCB);
	addButton(about_menu, btn, FALSE);

	testAlert = newAlertBox(50, 40,
		"       This is a example\n             of an\n           Alert box\nabcdefghijklmnopqrstuvwxyz0123456789");
	attachCallBack(testAlert, SDL_MOUSEBUTTONDOWN, alertCB);

	chr = (char) 0;

	for (i=0; i<16; i++)
	{
		for(j=0; j<16; j++)
		{
			font_set[i][j] = chr;
			chr++;
		}

		font_set[i][j] = '\0';
	}

	font_set[0][0] = (char) 255;

	tbox_test = newTextBox(60, 120, 200, 150, black, white, lgray, gray);
	attachCallBack(tbox_test, SDL_MOUSEBUTTONDOWN, tboxCB);
	attachCallBack(tbox_test, SDL_KEYDOWN, textboxCB);
	tbbtn1 = newButton(1, -(FONT_HEIGHT * 2 + 5), black, lgray, white, gray, "       Text Box Test");
	tbbtn2 = newButton(1, -(FONT_HEIGHT + 2), black, lgray, white, gray, "  Use arrows or PGUP/PGDOWN");
	addButton(tbox_test, tbbtn1, TRUE);
	addButton(tbox_test, tbbtn2, TRUE);
	attachCallBack(tbbtn1, SDL_MOUSEBUTTONDOWN, nullCallBack);
	attachCallBack(tbbtn2, SDL_MOUSEBUTTONDOWN, nullCallBack);
	addText(tbox_test, "This is a text box test.");
	addText(tbox_test, "Long line for testing limit at right end of the text box");
	addText(tbox_test, "");
	addText(tbox_test, "one");
	addText(tbox_test, "two");
	addText(tbox_test, "three");
	addText(tbox_test, "four");
	addText(tbox_test, "five");
	addText(tbox_test, "six");
	addText(tbox_test, "seven");
	addText(tbox_test, "eight");
	addText(tbox_test, "nine");
	addText(tbox_test, "ten");
	addText(tbox_test, "");
	addText(tbox_test, "Note that this text box has two");
	addText(tbox_test, "seemingly useless labels");
	addText(tbox_test, "attached at the top.");
	addText(tbox_test, "");
	addText(tbox_test, "There are no callbacks for");
	addText(tbox_test, "these labels--they are there");
	addText(tbox_test, "just to provide information to");
	addText(tbox_test, "the user.");
	addText(tbox_test, "");
	addText(tbox_test, "Labels may be attached to");
	addText(tbox_test, "widgets either inside the");
	addText(tbox_test, "widget or, as in this case,");
	addText(tbox_test, "outside the widget.");
	addText(tbox_test, "");
	addText(tbox_test, "Buttons may also be attached");
	addText(tbox_test, "outside the parent widget.");
	addText(tbox_test, "");
	addText(tbox_test, "Font set:");
	addText(tbox_test, "");

	for (i=0; i<16; i++)
		addText(tbox_test, (char *) &font_set[i][0]);

	addText(tbox_test, "");
	addText(tbox_test, "Last line in this text box.");
	tbbtn1->w = tbox_test->w;
	tbbtn2->w = tbox_test->w;

	ibox_test = newInputBox(40, 40, 150, 35, black, white, lgray, gray);
	attachCallBack(ibox_test, SDL_MOUSEBUTTONDOWN, iboxCB);
	attachCallBack(ibox_test, SDL_KEYDOWN, iboxCB);
	addLabel(ibox_test, newLabel(0, 0, black, gray, lgray, black, "File name"), TRUE);
	addInput(ibox_test, (char *) &fileNameInput);

	strcpy(lineone, "Four line input box.");
	strcpy(linetwo, "Starting in insert mode.");
	linethree[0] = '\0';
	linefour[0] = '\0';

	mibox_test = newInputBox(140, 300, 150, 50, black, white, lgray, gray);
	attachCallBack(mibox_test, SDL_MOUSEBUTTONDOWN, miboxCB);
	attachCallBack(mibox_test, SDL_KEYDOWN, miboxCB);
	mibox_label = newLabel(0, -(FONT_HEIGHT + 2), black, gray, lgray, black, "MultiLine InputBox");
	addLabel(mibox_test, mibox_label, TRUE);
	addInput(mibox_test, (char *) &lineone);
	addInput(mibox_test, (char *) &linetwo);
	addInput(mibox_test, (char *) &linethree);
	addInput(mibox_test, (char *) &linefour);
	showWidget(mibox_label);
	showWidget(mibox_test);

	hSlider = newHSlider(380, 320, 150, 15, lgray, lgray, white, gray, 100, 10);
	attachCallBack(hSlider, SDL_MOUSEBUTTONDOWN, hSliderCB);
	attachCallBack(hSlider, SDL_MOUSEBUTTONUP, hSliderCB);
	attachCallBack(hSlider, SDL_MOUSEMOTION, hSliderCB);
	attachCallBack(hSlider, SLIDER_AUTO_CALLBACK, hSliderAutoCB);
	showWidget(hSlider);
	hSliderLabel = newLabel(380, 300, white, black, 0, 0, hSliderText);
	showWidget(hSliderLabel);

	vSlider = newVSlider(450, 100, 15, 150, lgray, lgray, white, gray, 100, 10);
	attachCallBack(vSlider, SDL_MOUSEBUTTONDOWN, vSliderCB);
	attachCallBack(vSlider, SDL_MOUSEBUTTONUP, vSliderCB);
	attachCallBack(vSlider, SDL_MOUSEMOTION, vSliderCB);
	attachCallBack(vSlider, SLIDER_AUTO_CALLBACK, vSliderAutoCB);
	showWidget(vSlider);
	vSliderLabel = newLabel(390, 80, white, black, 0, 0, vSliderText);
	showWidget(vSliderLabel);

	SDL_UpdateRect(screen, 0, 0, 0, 0);

	while (!quit)
	{
		SDL_UpdateRect(screen, 0, 0, 0, 0);

		if (!SDL_PollEvent(NULL))
			SDL_WaitEvent(NULL);

		while (SDL_PollEvent(&event))
		{
			switch (event.type)
			{
				case SDL_KEYDOWN:
#ifdef DEBUG
					if (event.key.keysym.sym == SDLK_F1)
						dump_widget_list();
					else
#endif
					processCB(&event);
					break;

				case SDL_MOUSEBUTTONDOWN:
				case SDL_MOUSEBUTTONUP:
					processCB(&event);
					break;

				case SDL_MOUSEMOTION:
					processCB(&event);

					while (SDL_PollEvent(&event))
					{
						if (event.type != SDL_MOUSEMOTION)
						{
							SDL_PushEvent(&event);
							break;
						}
					}
					break;

				case TIMER_EVENT:
					processCB(&event);
					break;

				case SDL_QUIT:
					quit = TRUE;
					break;
			}
		}

		if (!quit)
			SDL_UpdateRect(screen, 0, 0, 0, 0);
	}

	widgetQuit();
	SDL_Quit();
	return(GOOD_EXIT);
}								//  End of Main

// end of file