guicast/bcdisplayinfo.C

   1 #include "bcdisplayinfo.h"
   2 #include "clip.h"
   3
   4 #include <X11/X.h>
   5 #include <X11/Xlib.h>
   6 #include <X11/Xutil.h>
   7 #include <unistd.h>
   8
   9 #define TEST_SIZE 128
  10 #define TEST_SIZE2 164
  11 #define TEST_SIZE3 196
  12 int BC_DisplayInfo::top_border = -1;
  13 int BC_DisplayInfo::left_border = -1;
  14 int BC_DisplayInfo::bottom_border = -1;
  15 int BC_DisplayInfo::right_border = -1;
  16 int BC_DisplayInfo::auto_reposition_x = -1;
  17 int BC_DisplayInfo::auto_reposition_y = -1;
  18
  19
  20 BC_DisplayInfo::BC_DisplayInfo(char *display_name, int show_error)
  21 {
  22         init_window(display_name, show_error);
  23 }
  24
  25 BC_DisplayInfo::~BC_DisplayInfo()
  26 {
  27         XCloseDisplay(display);
  28 }
  29
  30
  31 void BC_DisplayInfo::parse_geometry(char *geom, int *x, int *y, int *width, int *height)
  32 {
  33         XParseGeometry(geom, x, y, (unsigned int*)width, (unsigned int*)height);
  34 }
  35
  36 void BC_DisplayInfo::test_window(int &x_out,
  37         int &y_out,
  38         int &x_out2,
  39         int &y_out2,
  40         int x_in,
  41         int y_in)
  42 {
  43         unsigned long mask = CWEventMask | CWWinGravity;
  44         XSetWindowAttributes attr;
  45         XSizeHints size_hints;
  46
  47 //printf("BC_DisplayInfo::test_window 1\n");
  48         x_out = 0;
  49         y_out = 0;
  50         x_out2 = 0;
  51         y_out2 = 0;
  52         attr.event_mask = StructureNotifyMask;
  53         attr.win_gravity = SouthEastGravity;
  54         Window win = XCreateWindow(display,
  55                         rootwin,
  56                         x_in,
  57                         y_in,
  58                         TEST_SIZE,
  59                         TEST_SIZE,
  60                         0,
  61                         default_depth,
  62                         InputOutput,
  63                         vis,
  64                         mask,
  65                         &attr);
  66         XGetNormalHints(display, win, &size_hints);
  67         size_hints.flags = PPosition | PSize;
  68         size_hints.x = x_in;
  69         size_hints.y = y_in;
  70         size_hints.width = TEST_SIZE;
  71         size_hints.height = TEST_SIZE;
  72         XSetStandardProperties(display,
  73                 win,
  74                 "x",
  75                 "x",
  76                 None,
  77                 0,
  78                 0,
  79                 &size_hints);
  80
  81         XMapWindow(display, win);
  82         XFlush(display);
  83         XSync(display, 0);
  84         XMoveResizeWindow(display,
  85                 win,
  86                 x_in,
  87                 y_in,
  88                 TEST_SIZE2,
  89                 TEST_SIZE2);
  90         XFlush(display);
  91         XSync(display, 0);
  92
  93         XResizeWindow(display,
  94                 win,
  95                 TEST_SIZE3,
  96                 TEST_SIZE3);
  97         XFlush(display);
  98         XSync(display, 0);
  99
 100         XEvent event;
 101         int last_w = 0;
 102         int last_h = 0;
 103         int state = 0;
 104
 105         do
 106         {
 107                 XNextEvent(display, &event);
 108 //printf("BC_DisplayInfo::test_window 1 event=%d %d\n", event.type, XPending(display));
 109                 if(event.type == ConfigureNotify && event.xany.window == win)
 110                 {
 111 // Get creation repositioning
 112                         if(last_w != event.xconfigure.width || last_h != event.xconfigure.height)
 113                         {
 114                                 state++;
 115                                 last_w = event.xconfigure.width;
 116                                 last_h = event.xconfigure.height;
 117                         }
 118
 119                         if(state == 1)
 120                         {
 121                                 x_out = MAX(event.xconfigure.x + event.xconfigure.border_width - x_in, x_out);
 122                                 y_out = MAX(event.xconfigure.y + event.xconfigure.border_width - y_in, y_out);
 123                         }
 124                         else
 125                         if(state == 2)
 126 // Get moveresize repositioning
 127                         {
 128                                 x_out2 = MAX(event.xconfigure.x + event.xconfigure.border_width - x_in, x_out2);
 129                                 y_out2 = MAX(event.xconfigure.y + event.xconfigure.border_width - y_in, y_out2);
 130                         }
 131 // printf("BC_DisplayInfo::test_window 2 state=%d x_out=%d y_out=%d x_in=%d y_in=%d w=%d h=%d\n",
 132 // state,
 133 // event.xconfigure.x + event.xconfigure.border_width,
 134 // event.xconfigure.y + event.xconfigure.border_width,
 135 // x_in,
 136 // y_in,
 137 // event.xconfigure.width,
 138 // event.xconfigure.height);
 139                 }
 140         }while(state != 3);
 141
 142         XDestroyWindow(display, win);
 143         XFlush(display);
 144         XSync(display, 0);
 145
 146         x_out = MAX(0, x_out);
 147         y_out = MAX(0, y_out);
 148         x_out = MIN(x_out, 30);
 149         y_out = MIN(y_out, 30);
 150 //printf("BC_DisplayInfo::test_window 2\n");
 151 }
 152
 153 void BC_DisplayInfo::init_borders()
 154 {
 155         if(top_border < 0)
 156         {
 157
 158                 test_window(left_border,
 159                         top_border,
 160                         auto_reposition_x,
 161                         auto_reposition_y,
 162                         0,
 163                         0);
 164                 right_border = left_border;
 165                 bottom_border = left_border;
 166 // printf("BC_DisplayInfo::init_borders border=%d %d auto=%d %d\n",
 167 // left_border,
 168 // top_border,
 169 // auto_reposition_x,
 170 // auto_reposition_y);
 171         }
 172 }
 173
 174
 175 int BC_DisplayInfo::get_top_border()
 176 {
 177         init_borders();
 178         return top_border;
 179 }
 180
 181 int BC_DisplayInfo::get_left_border()
 182 {
 183         init_borders();
 184         return left_border;
 185 }
 186
 187 int BC_DisplayInfo::get_right_border()
 188 {
 189         init_borders();
 190         return right_border;
 191 }
 192
 193 int BC_DisplayInfo::get_bottom_border()
 194 {
 195         init_borders();
 196         return bottom_border;
 197 }
 198
 199 void BC_DisplayInfo::init_window(char *display_name, int show_error)
 200 {
 201         if(display_name && display_name[0] == 0) display_name = NULL;
 202
 203 // This function must be the first Xlib
 204 // function a multi-threaded program calls
 205         XInitThreads();
 206
 207         if((display = XOpenDisplay(display_name)) == NULL)
 208         {
 209                 if(show_error)
 210                 {
 211                         printf("BC_DisplayInfo::init_window: cannot connect to X server.\n");
 212                         if(getenv("DISPLAY") == NULL)
 213                         printf("'DISPLAY' environment variable not set.\n");
 214                         exit(1);
 215                 }
 216                 return;
 217         }
 218
 219         screen = DefaultScreen(display);
 220         rootwin = RootWindow(display, screen);
 221         vis = DefaultVisual(display, screen);
 222         default_depth = DefaultDepth(display, screen);
 223 }
 224
 225
 226 int BC_DisplayInfo::get_root_w()
 227 {
 228         Screen *screen_ptr = XDefaultScreenOfDisplay(display);
 229         return WidthOfScreen(screen_ptr);
 230 }
 231
 232 int BC_DisplayInfo::get_root_h()
 233 {
 234         Screen *screen_ptr = XDefaultScreenOfDisplay(display);
 235         return HeightOfScreen(screen_ptr);
 236 }
 237
 238 int BC_DisplayInfo::get_abs_cursor_x()
 239 {
 240         int abs_x, abs_y, win_x, win_y;
 241         unsigned int temp_mask;
 242         Window temp_win;
 243
 244         XQueryPointer(display,
 245            rootwin,
 246            &temp_win,
 247            &temp_win,
 248        &abs_x,
 249            &abs_y,
 250            &win_x,
 251            &win_y,
 252            &temp_mask);
 253         return abs_x;
 254 }
 255
 256 int BC_DisplayInfo::get_abs_cursor_y()
 257 {
 258         int abs_x, abs_y, win_x, win_y;
 259         unsigned int temp_mask;
 260         Window temp_win;
 261
 262         XQueryPointer(display,
 263            rootwin,
 264            &temp_win,
 265            &temp_win,
 266        &abs_x,
 267            &abs_y,
 268            &win_x,
 269            &win_y,
 270            &temp_mask);
 271         return abs_y;
 272 }
 273 /*
 274 //      Local Variables:
 275 //      mode: C++
 276 //      c-file-style: "linux"
 277 //      End:
 278 */