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Diffstat (limited to 'src/MenuButton.c')
| -rw-r--r-- | src/MenuButton.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/MenuButton.c b/src/MenuButton.c new file mode 100644 index 0000000..4483009 --- /dev/null +++ b/src/MenuButton.c @@ -0,0 +1,229 @@ +/* $Xorg: MenuButton.c,v 1.4 2001/02/09 02:03:44 xorgcvs Exp $ */ + +/* +Copyright 1989, 1994, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from The Open Group. + * + */ + + +/*********************************************************************** + * + * MenuButton Widget + * + ***********************************************************************/ + +/* + * MenuButton.c - Source code for MenuButton widget. + * + * This is the source code for the Athena MenuButton widget. + * It is intended to provide an easy method of activating pulldown menus. + * + * Date: May 2, 1989 + * + * By: Chris D. Peterson + * MIT X Consortium + * kit@expo.lcs.mit.edu + */ + +#include <stdio.h> +#include <X11/IntrinsicP.h> +#include <X11/StringDefs.h> + +#include <X11/Xaw/XawInit.h> +#include <X11/Xaw/MenuButtoP.h> + +static void ClassInitialize(); +static void PopupMenu(); + +#define superclass ((CommandWidgetClass)&commandClassRec) + +static char defaultTranslations[] = +"<EnterWindow>: highlight()\n\ + <LeaveWindow>: reset()\n\ + Any<BtnDown>: reset() PopupMenu()"; + +/**************************************************************** + * + * Full class record constant + * + ****************************************************************/ + +/* Private Data */ + +#define offset(field) XtOffsetOf(MenuButtonRec, field) +static XtResource resources[] = { + { + XtNmenuName, XtCMenuName, XtRString, sizeof(String), + offset(menu_button.menu_name), XtRString, (XtPointer)"menu"}, +}; +#undef offset + +static XtActionsRec actionsList[] = +{ + {"PopupMenu", PopupMenu} +}; + +MenuButtonClassRec menuButtonClassRec = { + { + (WidgetClass) superclass, /* superclass */ + "MenuButton", /* class_name */ + sizeof(MenuButtonRec), /* size */ + ClassInitialize, /* class_initialize */ + NULL, /* class_part_initialize */ + FALSE, /* class_inited */ + NULL, /* initialize */ + NULL, /* initialize_hook */ + XtInheritRealize, /* realize */ + actionsList, /* actions */ + XtNumber(actionsList), /* num_actions */ + resources, /* resources */ + XtNumber(resources), /* resource_count */ + NULLQUARK, /* xrm_class */ + FALSE, /* compress_motion */ + TRUE, /* compress_exposure */ + TRUE, /* compress_enterleave */ + FALSE, /* visible_interest */ + NULL, /* destroy */ + XtInheritResize, /* resize */ + XtInheritExpose, /* expose */ + NULL, /* set_values */ + NULL, /* set_values_hook */ + XtInheritSetValuesAlmost, /* set_values_almost */ + NULL, /* get_values_hook */ + NULL, /* accept_focus */ + XtVersion, /* version */ + NULL, /* callback_private */ + defaultTranslations, /* tm_table */ + XtInheritQueryGeometry, /* query_geometry */ + XtInheritDisplayAccelerator, /* display_accelerator */ + NULL /* extension */ + }, /* CoreClass fields initialization */ + { + XtInheritChangeSensitive /* change_sensitive */ + }, /* SimpleClass fields initialization */ + { + 0, /* field not used */ + }, /* LabelClass fields initialization */ + { + 0, /* field not used */ + }, /* CommandClass fields initialization */ + { + 0, /* field not used */ + } /* MenuButtonClass fields initialization */ +}; + + /* for public consumption */ +WidgetClass menuButtonWidgetClass = (WidgetClass) &menuButtonClassRec; + +/**************************************************************** + * + * Private Procedures + * + ****************************************************************/ + +static void ClassInitialize() +{ + XawInitializeWidgetSet(); + XtRegisterGrabAction(PopupMenu, True, + (unsigned int)(ButtonPressMask | ButtonReleaseMask), + GrabModeAsync, GrabModeAsync); +} + +/* ARGSUSED */ +static void +PopupMenu(w, event, params, num_params) +Widget w; +XEvent * event; +String * params; +Cardinal * num_params; +{ + MenuButtonWidget mbw = (MenuButtonWidget) w; + Widget menu, temp; + Arg arglist[2]; + Cardinal num_args; + int menu_x, menu_y, menu_width, menu_height, button_height; + Position button_x, button_y; + + temp = w; + while(temp != NULL) { + menu = XtNameToWidget(temp, mbw->menu_button.menu_name); + if (menu == NULL) + temp = XtParent(temp); + else + break; + } + + if (menu == NULL) { + char error_buf[BUFSIZ]; + char* errorp; + int len; + char* fmt = "MenuButton: Could not find menu widget named %s."; + + if ((len = strlen (fmt) + strlen (mbw->menu_button.menu_name)) < sizeof error_buf) + errorp = error_buf; + else + errorp = XtMalloc (len + 1); + if (errorp == NULL) { + errorp = error_buf; + strcpy (errorp, "MenuButton: Could not find menu widget."); + } else + (void) sprintf(errorp, fmt, mbw->menu_button.menu_name); + XtAppWarning (XtWidgetToApplicationContext (w), errorp); + if (errorp != error_buf) XtFree (errorp); + return; + } + if (!XtIsRealized(menu)) + XtRealizeWidget(menu); + + menu_width = menu->core.width + 2 * menu->core.border_width; + button_height = w->core.height + 2 * w->core.border_width; + menu_height = menu->core.height + 2 * menu->core.border_width; + + XtTranslateCoords(w, 0, 0, &button_x, &button_y); + menu_x = button_x; + menu_y = button_y + button_height; + + if (menu_x >= 0) { + int scr_width = WidthOfScreen(XtScreen(menu)); + if (menu_x + menu_width > scr_width) + menu_x = scr_width - menu_width; + } + if (menu_x < 0) + menu_x = 0; + + if (menu_y >= 0) { + int scr_height = HeightOfScreen(XtScreen(menu)); + if (menu_y + menu_height > scr_height) + menu_y = scr_height - menu_height; + } + if (menu_y < 0) + menu_y = 0; + + num_args = 0; + XtSetArg(arglist[num_args], XtNx, menu_x); num_args++; + XtSetArg(arglist[num_args], XtNy, menu_y); num_args++; + XtSetValues(menu, arglist, num_args); + + XtPopupSpringLoaded(menu); +} + |