application/window.c

   1 /*
   2  * Copyright 2022 Olaf Wintermann
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "window.h"
  28 #include "main.h"
  29 #include "player.h"
  30
  31 #include "Fsb.h"
  32
  33 static MainWindow *main_window;
  34
  35 static void WindowCreateMenu(MainWindow *win, Widget parent, Arg *args, int nargs);
  36
  37 static void FileOpenCB(Widget w, void *udata, void *cdata);
  38 static void ViewFullscreenCB(Widget w, void *udata, void *cdata);
  39
  40 static void window_close_handler(Widget window, void *udata, void *cdata) {
  41     ApplicationExit();
  42 }
  43
  44 static unsigned int keycodeF;
  45
  46 static void windowKeyEH(Widget widget, XtPointer data, XEvent *event, Boolean *dispatch) {
  47     MainWindow *win = data;
  48     if(win->fullscreen && event->xkey.keycode == keycodeF) {
  49         WindowFullscreen(main_window, FALSE);
  50         *dispatch = FALSE;
  51     }
  52 }
  53
  54 MainWindow* WindowCreate(Display *display) {
  55     Arg args[32];
  56     int n;
  57
  58     MainWindow *window = malloc(sizeof(MainWindow));
  59     memset(window, 0, sizeof(MainWindow));
  60     main_window = window;
  61
  62     // toplevel window
  63     n = 0;
  64     XtSetArg(args[n], XmNtitle, "MediaPlayer"); n++;
  65     window->window = XtAppCreateShell(
  66             "mediaplayer",
  67             "mediaplayer",
  68             //applicationShellWidgetClass,
  69             vendorShellWidgetClass,
  70             display,
  71             args,
  72             n);
  73
  74
  75     Atom wm_delete_window;
  76     wm_delete_window = XmInternAtom(
  77             display,
  78             "WM_DELETE_WINDOW",
  79             0);
  80     XmAddWMProtocolCallback(
  81             window->window,
  82             wm_delete_window,
  83             window_close_handler,
  84             window);
  85
  86
  87     n = 0;
  88     XtSetArg(args[n], XmNwidth, 360); n++;
  89     XtSetArg(args[n], XmNheight, 220); n++;
  90     XtSetArg(args[n], XmNshadowThickness, 0); n++;
  91     Widget container = XmCreateForm(window->window, "form", args, n);
  92     XtManageChild(container);
  93     XtAddEventHandler(container, KeyPressMask, FALSE, windowKeyEH, window);
  94
  95     n = 0;
  96     XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); n++;
  97     XtSetArg(args[n], XmNrightAttachment, XmATTACH_FORM); n++;
  98     XtSetArg(args[n], XmNtopAttachment, XmATTACH_FORM); n++;
  99     WindowCreateMenu(window, container, args, n);
 100
 101     n = 0;
 102     XtSetArg(args[n], XmNleftAttachment, XmATTACH_FORM); n++;
 103     XtSetArg(args[n], XmNrightAttachment, XmATTACH_FORM); n++;
 104     XtSetArg(args[n], XmNbottomAttachment, XmATTACH_FORM); n++;
 105     XtSetArg(args[n], XmNtopAttachment, XmATTACH_WIDGET); n++;
 106     XtSetArg(args[n], XmNtopWidget, window->menubar); n++;
 107     XtSetArg(args[n], XmNbackground, BlackPixelOfScreen(XtScreen(window->window))); n++;
 108     window->player_widget = XmCreateDrawingArea(container, "player", args, n);
 109     XtManageChild(window->player_widget);
 110
 111     // get F keycode
 112     keycodeF = XKeysymToKeycode(XtDisplay(window->window), XStringToKeysym("F"));
 113
 114     return window;
 115 }
 116
 117 void WindowShow(MainWindow *win) {
 118     XtRealizeWidget(win->window);
 119 }
 120
 121 /*
 122  * Creates a XmPushButton menu item
 123  */
 124 static Widget createMenuItem(
 125         Widget menu,
 126         char *name,
 127         char *label,
 128         char mnemonic,
 129         const char *accelerator,
 130         char *accelerator_text,
 131         XtCallbackProc callback,
 132         void *cbData)
 133 {
 134     Arg args[16];
 135     int n = 0;
 136
 137     XmString s1 = XmStringCreateSimple(label);
 138     XtSetArg(args[n], XmNlabelString, s1); n++;
 139     XtSetArg(args[n], XmNmnemonic, mnemonic); n++;
 140     XmString at = NULL;
 141     if(accelerator && accelerator_text) {
 142         at = XmStringCreateSimple(accelerator_text);
 143         XtSetArg(args[n], XmNaccelerator, accelerator); n++;
 144         XtSetArg(args[n], XmNacceleratorText, at); n++;
 145     }
 146
 147     Widget menuItem = XmCreatePushButtonGadget(menu, name, args, n);
 148     XtManageChild(menuItem);
 149     XmStringFree(s1);
 150     if(at) XmStringFree(at);
 151
 152     if(callback) {
 153         XtAddCallback(menuItem, XmNactivateCallback, (XtCallbackProc)callback, cbData);
 154     }
 155
 156     return menuItem;
 157 }
 158
 159 static void WindowCreateMenu(MainWindow *win, Widget parent, Arg *mbargs, int nmbargs) {
 160     Widget menubar = XmCreateMenuBar(parent, "menubar", mbargs, nmbargs);
 161     XtManageChild(menubar);
 162     win->menubar = menubar;
 163
 164     Arg args[16];
 165     int n;
 166
 167     // menus
 168     XmString s = XmStringCreateSimple("File");
 169     Widget fileMenuItem = XtVaCreateManagedWidget(
 170             "menuitem",
 171             xmCascadeButtonWidgetClass,
 172             menubar,
 173             XmNlabelString, s,
 174             NULL);
 175     XmStringFree(s);
 176     Widget fileMenu = XmVaCreateSimplePulldownMenu(menubar, "menu", 0, NULL, NULL);
 177
 178     s = XmStringCreateSimple("Playback");
 179     Widget playMenuItem = XtVaCreateManagedWidget(
 180             "menuitem",
 181             xmCascadeButtonWidgetClass,
 182             menubar,
 183             XmNlabelString, s,
 184             NULL);
 185     XmStringFree(s);
 186     Widget playMenu = XmVaCreateSimplePulldownMenu(menubar, "menu", 1, NULL, NULL);
 187
 188     s = XmStringCreateSimple("View");
 189     Widget viewMenuItem = XtVaCreateManagedWidget(
 190             "menuitem",
 191             xmCascadeButtonWidgetClass,
 192             menubar,
 193             XmNlabelString, s,
 194             NULL);
 195     XmStringFree(s);
 196     Widget viewMenu = XmVaCreateSimplePulldownMenu(menubar, "menu", 2, NULL, NULL);
 197
 198     // file menu
 199     createMenuItem(fileMenu, "fileOpen", "Open...", 'O', "Ctrl<Key>O", "Ctrl+O", FileOpenCB, NULL);
 200
 201     // view menu
 202     createMenuItem(viewMenu, "viewFullscreen", "Fullscreen", 'F', "<Key>F", "F", ViewFullscreenCB, NULL);
 203 }
 204
 205 void go_fullscreen(Display *dsp, Window win)
 206 {
 207   XEvent xev;
 208   Atom wm_state = XInternAtom(dsp, "_NET_WM_STATE", False);
 209   Atom fullscreen = XInternAtom(dsp, "_NET_WM_STATE_FULLSCREEN", False);
 210   memset(&xev, 0, sizeof(xev));
 211   xev.type = ClientMessage;
 212   xev.xclient.window = win;
 213   xev.xclient.message_type = wm_state;
 214   xev.xclient.format = 32;
 215   xev.xclient.data.l[0] = 1; // _NET_WM_STATE_ADD
 216   xev.xclient.data.l[1] = fullscreen;
 217   xev.xclient.data.l[2] = 0;
 218   XSendEvent(dsp, DefaultRootWindow(dsp), False,
 219     SubstructureNotifyMask, &xev);
 220 }
 221
 222 static Atom net_wm_state;
 223 static Atom net_wm_state_fullscreen;
 224 static int net_wm_atoms_initialized = 0;
 225
 226 void WindowFullscreen(MainWindow *win, bool enableFullscreen) {
 227     Display *dpy = XtDisplay(win->window);
 228
 229     // init net_wm_state atoms
 230     if(!net_wm_atoms_initialized) {
 231         net_wm_state = XInternAtom(dpy, "_NET_WM_STATE", False);
 232         net_wm_state_fullscreen = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
 233         net_wm_atoms_initialized = 1;
 234     }
 235
 236     WindowMenubarSetVisible(win, !enableFullscreen);
 237     if(enableFullscreen && !win->fullscreen) {
 238         XtUnmanageChild(main_window->menubar);
 239         main_window->fullscreen = TRUE;
 240     } else if(!enableFullscreen && win->fullscreen) {
 241         XtManageChild(main_window->menubar);
 242         main_window->fullscreen = FALSE;
 243     }
 244
 245     XEvent ev;
 246     memset(&ev, 0, sizeof(XEvent));
 247     ev.type = ClientMessage;
 248     ev.xclient.window = XtWindow(win->window);
 249     ev.xclient.message_type = net_wm_state;
 250     ev.xclient.format = 32;
 251     ev.xclient.data.l[0] = enableFullscreen ? 1 : 0;
 252     ev.xclient.data.l[1] = net_wm_state_fullscreen;
 253     ev.xclient.data.l[2] = 0;
 254     XSendEvent(dpy, DefaultRootWindow(dpy), False, SubstructureNotifyMask | SubstructureRedirectMask, &ev);
 255 }
 256
 257 void WindowMenubarSetVisible(MainWindow *win, bool visible) {
 258     if(visible) {
 259         XtManageChild(main_window->menubar);
 260         XtVaSetValues(main_window->player_widget, XmNtopAttachment, XmATTACH_WIDGET, XmNtopWidget, main_window->menubar, NULL);
 261     } else {
 262         XtUnmanageChild(main_window->menubar);
 263         XtVaSetValues(main_window->player_widget, XmNtopAttachment, XmATTACH_FORM, NULL);
 264     }
 265 }
 266
 267
 268
 269 static void filedialog_end(
 270         Widget widget,
 271         MainWindow *data,
 272         XmFileSelectionBoxCallbackStruct *selection)
 273 {
 274     XtUnmanageChild(widget);
 275     XtDestroyWidget(widget);
 276 }
 277
 278 static void filedialog_select(
 279         Widget widget,
 280         MainWindow *data,
 281         XmFileSelectionBoxCallbackStruct *selection)
 282 {
 283     char *value = NULL;
 284     if(selection->value) {
 285         XmStringGetLtoR(selection->value, XmSTRING_DEFAULT_CHARSET, &value);
 286         if(value) {
 287             if(data->file) {
 288                 XtFree(data->file);
 289             }
 290             data->file = value;
 291             // no need to free the value, because it is stored in MainWindow
 292
 293             PlayerOpenFile(data);
 294         }
 295     }
 296     filedialog_end(widget, data, NULL);
 297 }
 298
 299
 300
 301
 302 static void FileOpenCB(Widget w, void *udata, void *cdata) {
 303     MainWindow *win = main_window;
 304     Widget dialog = XnCreateFileSelectionDialog(win->window, "dialog", NULL, 0);
 305     XtAddCallback(dialog, XmNokCallback, (XtCallbackProc)filedialog_select, win);
 306     XtAddCallback(dialog, XmNcancelCallback, (XtCallbackProc)filedialog_end, win);
 307     XtManageChild(dialog);
 308 }
 309
 310 static void ViewFullscreenCB(Widget w, void *udata, void *cdata) {
 311     if(main_window->fullscreen) {
 312         WindowFullscreen(main_window, FALSE);
 313     } else {
 314         WindowFullscreen(main_window, TRUE);
 315     }
 316
 317 }