application/Sidebar.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 "Sidebar.h"
  24 #include "SidebarP.h"
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <errno.h>
  30
  31 #include "xdnd.h"
  32 #include "utils.h"
  33 #include "playlist.h"
  34
  35
  36 static void sidebar_class_init(void);
  37 static void sidebar_class_part_init (WidgetClass wc);
  38 static void sidebar_init(Widget request, Widget neww, ArgList args, Cardinal *num_args);
  39 static void sidebar_destroy(Widget widget);
  40 static void sidebar_resize(Widget widget);
  41 static void sidebar_realize(Widget widget, XtValueMask *mask, XSetWindowAttributes *attributes);
  42 static void sidebar_expose(Widget widget, XEvent *event, Region region);
  43 static Boolean sidebar_set_values(Widget old, Widget request, Widget neww, ArgList args, Cardinal *num_args);
  44 static void sidebar_insert_child(Widget child);
  45 Boolean sidebar_acceptfocus(Widget widget, Time *time);
  46
  47 static void FocusInAP(Widget w, XEvent *event, String *args, Cardinal *nArgs);
  48 static void SelectElmAP(Widget w, XEvent *event, String *args, Cardinal *nArgs);
  49 static void PopupAP(Widget w, XEvent *event, String *args, Cardinal *nArgs);
  50
  51 static void sidebar_xdnd_callback(Widget w, XtPointer udata, XtPointer cdata);
  52
  53
  54 static XtResource resources[] = {
  55
  56 };
  57
  58 static XtActionsRec actionslist[] = {
  59   {"focusIn", FocusInAP},
  60   {"selectElm", SelectElmAP},
  61   {"popup", PopupAP}
  62 };
  63
  64 static char defaultTranslations[] = "<FocusIn>:  focusIn()\n"
  65                                     "<Btn1Down>: selectElm()\n"
  66                                     "<Btn3Down>: popup()";
  67
  68
  69 static XtResource constraints[] = {};
  70
  71 SidebarClassRec sidebarWidgetClassRec = {
  72     // Core Class
  73     {
  74         (WidgetClass)&xmManagerClassRec,
  75         "XnSidebar",                         // class_name
  76         sizeof(SidebarRec),                  // widget_size
  77         sidebar_class_init,                  // class_initialize
  78         sidebar_class_part_init,             // class_part_initialize
  79         FALSE,                           // class_inited
  80         sidebar_init,                        // initialize
  81         NULL,                            // initialize_hook
  82         sidebar_realize,                     // realize
  83         actionslist,                     // actions
  84         XtNumber(actionslist),           // num_actions
  85         resources,                       // resources
  86         XtNumber(resources),             // num_resources
  87         NULLQUARK,                       // xrm_class
  88         True,                            // compress_motion
  89         True,                            // compress_exposure
  90         True,                            // compress_enterleave
  91         False,                           // visible_interest
  92         sidebar_destroy,                     // destroy
  93         sidebar_resize,                      // resize
  94         sidebar_expose,                 // expose
  95         sidebar_set_values,                  // set_values
  96         NULL,                            // set_values_hook
  97         XtInheritSetValuesAlmost,        // set_values_almost
  98         NULL,                            // get_values_hook
  99         sidebar_acceptfocus,                 // accept_focus
 100         XtVersion,                       // version
 101         NULL,                            // callback_offsets
 102         defaultTranslations,             // tm_table
 103         XtInheritQueryGeometry,          // query_geometry
 104         XtInheritDisplayAccelerator,     // display_accelerator
 105         NULL,                            // extension
 106     },
 107     // Composite Class
 108     {
 109         XtInheritGeometryManager, // geometry_manager
 110         XtInheritChangeManaged,   // change_managed
 111         sidebar_insert_child,         // insert_child
 112         XtInheritDeleteChild,     // delete_child
 113         NULL,                     // extension
 114     },
 115     // Constraint Class
 116     {
 117         constraints,                 // resources
 118         XtNumber(constraints),       // num_resources
 119         sizeof(XmFormConstraintRec), // constraint_size
 120         NULL,                        // initialize
 121         NULL,                        // destroy
 122         NULL,                        // set_value
 123         NULL,                        // extension
 124     },
 125     // XmManager Class
 126     {
 127         XtInheritTranslations, // translations
 128         NULL, // syn_resources
 129         0,    // num_syn_resources
 130         NULL, // syn_constraint_resources
 131         0,    // num_syn_constraint_resources
 132         XmInheritParentProcess, // parent_process
 133         NULL  // extension
 134     },
 135     // Sidebar Class
 136     {
 137         0
 138     }
 139 };
 140
 141 WidgetClass xnSidebarWidgetClass = (WidgetClass)&sidebarWidgetClassRec;
 142
 143
 144 static void sidebar_class_init(void) {
 145
 146 }
 147
 148 static void sidebar_class_part_init (WidgetClass wc) {
 149     SidebarClassRec *sidebarClass = (SidebarClassRec*)wc;
 150     XmManagerClassRec *managerClass = (XmManagerClassRec*)xmManagerWidgetClass;
 151
 152     sidebarClass->constraint_class.initialize = managerClass->constraint_class.initialize;
 153     sidebarClass->constraint_class.set_values = managerClass->constraint_class.set_values;
 154 }
 155
 156
 157
 158 static void sidebar_init(Widget request, Widget neww, ArgList args, Cardinal *num_args) {
 159     Sidebar sb = (Sidebar)neww;
 160
 161     // initialize everything except XftDraw or other stuff that needs a Window
 162
 163     XftColor fg, bg;
 164     fg.color.red = 0;
 165     fg.color.green = 0;
 166     fg.color.blue = 0;
 167     fg.color.alpha = 0xFFFF;
 168
 169     bg.color.red = 0xFFFF;
 170     bg.color.green = 0xFFFF;
 171     bg.color.blue = 0xFFFF;
 172     bg.color.alpha = 0xFFFF;
 173
 174     sb->sidebar.fg = fg;
 175     sb->sidebar.bg = bg;
 176
 177     sb->sidebar.font = FontFromName(XtDisplay(neww), "Sans:size=11");
 178     if(!sb->sidebar.font) {
 179         fprintf(stderr, "Cannot open font.\nAbort.\n");
 180         exit(-1);
 181     }
 182
 183     XftFont *xftFont = sb->sidebar.font->fonts->font;
 184     int padding = 2;
 185     int fontheight = xftFont->ascent;
 186     sb->sidebar.elmHeight = fontheight + 2*padding;
 187 }
 188
 189
 190
 191 static void sidebar_destroy(Widget widget) {
 192
 193 }
 194
 195 static void sidebar_resize(Widget widget) {
 196
 197 }
 198
 199 static int xdnd_initialized = 0;
 200
 201 static void sidebar_realize(Widget widget, XtValueMask *mask, XSetWindowAttributes *attributes) {
 202     (xmManagerClassRec.core_class.realize)(widget, mask, attributes);
 203
 204     if(!xdnd_initialized) {
 205         XdndInit(XtDisplay(widget), XtWidgetToApplicationContext(widget), sidebar_xdnd_callback, widget);
 206     }
 207     XdndEnable(widget);
 208
 209     Screen *screen = widget->core.screen;
 210     Visual *visual = screen->root_visual;
 211     for(int i=0;i<screen->ndepths;i++) {
 212         Depth d = screen->depths[i];
 213         if(d.depth == widget->core.depth) {
 214             visual = d.visuals;
 215             break;
 216         }
 217     }
 218
 219     Sidebar sb = (Sidebar)widget;
 220     sb->sidebar.d = XftDrawCreate(
 221             XtDisplay(widget),
 222             XtWindow(widget),
 223             visual,
 224             widget->core.colormap);
 225 }
 226
 227 static void sidebar_expose(Widget widget, XEvent *event, Region region) {
 228     //printf("expose\n");
 229     Dimension w, h;
 230     XtMakeResizeRequest(widget, 200, 200, &w, &h);
 231
 232     Sidebar s = (Sidebar)widget;
 233     XftFont *xftFont = s->sidebar.font->fonts->font;
 234
 235
 236     XftDrawRect(s->sidebar.d, &s->sidebar.bg, 0, 0, s->core.width, s->core.height);
 237
 238     int fontheight = xftFont->ascent;
 239     int height = s->sidebar.elmHeight;
 240
 241     //printf("current track: %d\n", s->sidebar.window->playlist.current_track);
 242
 243     int i = 0;
 244     UCX_FOREACH(elm, s->sidebar.window->playlist.tracks) {
 245         char *name = util_resource_name(elm->data);
 246         XftColor *cg = &s->sidebar.fg;
 247         if(i == s->sidebar.window->playlist.current_track) {
 248             XftDrawRect(s->sidebar.d, &s->sidebar.fg, 0, i*height, s->core.width, height);
 249             cg = &s->sidebar.bg;
 250         }
 251
 252         XftDrawString8(s->sidebar.d, cg, s->sidebar.font->fonts->font, 10, i*height + xftFont->ascent, (const FcChar8*)name, strlen(name));
 253
 254         i++;
 255     }
 256 }
 257
 258 static Boolean sidebar_set_values(Widget old, Widget request, Widget neww, ArgList args, Cardinal *num_args) {
 259     Boolean r = False;
 260
 261     return r;
 262 }
 263
 264 static void sidebar_insert_child(Widget child) {
 265     (xmManagerClassRec.composite_class.insert_child)(child);
 266 }
 267
 268 Boolean sidebar_acceptfocus(Widget widget, Time *time) {
 269     return 0;
 270 }
 271
 272
 273 static void FocusInAP(Widget w, XEvent *event, String *args, Cardinal *nArgs) {
 274
 275 }
 276
 277 static void SelectElmAP(Widget w, XEvent *event, String *args, Cardinal *nArgs) {
 278     //printf("btn1\n");
 279     XButtonEvent *e = &event->xbutton;
 280     Sidebar s = (Sidebar)w;
 281
 282     int selected = e->y / s->sidebar.elmHeight;
 283     PlayListPlayTrack(s->sidebar.window, selected);
 284
 285     SidebarRepaint(w);
 286 }
 287
 288 static void PopupAP(Widget w, XEvent *event, String *args, Cardinal *nArgs) {
 289     //printf("btn3\n");
 290 }
 291
 292
 293
 294 static void sidebar_xdnd_callback(Widget w, XtPointer udata, XtPointer cdata) {
 295     printf("xdnd\n");
 296     fflush(stdout);
 297
 298     Sidebar s = (Sidebar)cdata;
 299
 300     char *urilist = udata;
 301
 302     size_t len = strlen(urilist);
 303
 304     size_t start = 0;
 305     if(len > 7 && !memcmp(urilist, "file://", 7)) {
 306         start = 7;
 307     }
 308
 309     int err = 0;
 310
 311     // urldecode
 312     char *path = malloc(len + 1);
 313     int k = 0;
 314     for(int i=start;i<len;i++) {
 315         char c = urilist[i];
 316         if(c == '%') {
 317             if(i + 2 < len) {
 318                 char code[3];
 319                 code[0] = urilist[i+1];
 320                 code[1] = urilist[i+2];
 321                 code[2] = '\0';
 322
 323                 errno = 0;
 324                 char *end = NULL;
 325                 int ascii = (int)strtol(code, &end, 16);
 326                 if(errno == 0 && end == &code[2]) {
 327                     path[k] = ascii;
 328                     i += 2;
 329                 } else {
 330                     err = 1;
 331                     break;
 332                 }
 333             } else {
 334                 err = 1;
 335                 break;
 336             }
 337         } else if(c == '\n' || c == '\r') {
 338             break;
 339         } else {
 340             path[k] = c;
 341         }
 342
 343         k++;
 344     }
 345     path[k] = '\0';
 346
 347     PlayListAddFile(s->sidebar.window, path);
 348
 349     free(path);
 350 }
 351
 352
 353 /* --------------------------- public --------------------------- */
 354
 355 Widget CreateSidebar(
 356         Widget parent,
 357         String name,
 358         ArgList arglist,
 359         Cardinal argcount)
 360 {
 361     return XtCreateWidget(name, xnSidebarWidgetClass, parent, arglist, argcount);
 362 }
 363
 364 void SidebarSetWindow(Widget widget, MainWindow *win) {
 365     Sidebar sb = (Sidebar)widget;
 366     sb->sidebar.window = win;
 367 }
 368
 369 void SidebarRepaint(Widget widget) {
 370     XClearArea(XtDisplay(widget), XtWindow(widget), 0, 0, widget->core.width, widget->core.height, true);
 371 }