eleni.mutantstargoat.com Git - winnie/blob - src/wm.cc

   1 #include <algorithm>
   2 #include <stdexcept>
   3 #include <stdio.h>      // TODO
   4
   5 #include "gfx.h"
   6 #include "mouse.h"
   7 #include "mouse_cursor.h"
   8 #include "text.h"
   9 #include "wm.h"
  10 #include "window.h"
  11
  12 WindowManager *wm;
  13 static WindowManager wminst;
  14
  15 static void display(Window *win);
  16 static void mouse(Window *win, int bn, bool pressed, int x, int y);
  17 static void motion(Window *win, int x, int y);
  18
  19 void WindowManager::create_frame(Window *win)
  20 {
  21         Window *frame = new Window;
  22         Window *parent = win->get_parent();
  23
  24         frame->set_display_callback(display);
  25         frame->set_mouse_button_callback(mouse);
  26         frame->set_mouse_motion_callback(motion);
  27         frame->set_focusable(false);
  28         frame->add_child(win);
  29
  30         windows.push_back(frame);
  31
  32         Rect win_rect = win->get_rect();
  33         frame->move(win_rect.x - frame_thickness,
  34                         win_rect.y - frame_thickness - titlebar_thickness);
  35         frame->resize(win_rect.width + frame_thickness * 2,
  36                         win_rect.height + frame_thickness * 2 + titlebar_thickness);
  37
  38         win->move(frame_thickness, frame_thickness + titlebar_thickness);
  39         parent->add_child(frame);
  40 }
  41
  42 void WindowManager::destroy_frame(Window *win)
  43 {
  44         Window *frame = win->parent;
  45         if(!frame) {
  46                 return;
  47         }
  48
  49         if(grab_win == win) {
  50                 release_mouse();
  51         }
  52
  53         std::list<Window*>::iterator it;
  54         it = std::find(windows.begin(), windows.end(), frame);
  55         if(it != windows.end()) {
  56                 root_win->add_child(win);
  57                 windows.erase(it);
  58                 delete frame;
  59         }
  60 }
  61
  62 WindowManager::WindowManager()
  63 {
  64         if(!wm) {
  65                 wm = this;
  66         } else {
  67                 throw std::runtime_error("Trying to create a second instance of WindowManager!\n");
  68         }
  69
  70         root_win = new Window;
  71         root_win->resize(get_screen_size().width, get_screen_size().height);
  72         root_win->move(0, 0);
  73         root_win->set_managed(false);
  74
  75         focused_win = 0;
  76
  77         bg_color[0] = 210;
  78         bg_color[1] = 106;
  79         bg_color[2] = 106;
  80
  81         frame_thickness = 8;
  82         titlebar_thickness = 16;
  83
  84         set_focused_frame_color(0, 0, 0);
  85         set_unfocused_frame_color(200, 200, 200);
  86
  87         mouse_cursor.set_image(mouse_cursor_width, mouse_cursor_height);
  88         unsigned char *pixels = mouse_cursor.get_image();
  89
  90         for(int i=0; i<mouse_cursor_height; i++) {
  91                 for(int j=0; j<mouse_cursor_width; j++) {
  92                         int val = mouse_cursor_bw[i * mouse_cursor_width + j];
  93                         *pixels++ = val;
  94                         *pixels++ = val;
  95                         *pixels++ = val;
  96                         *pixels++ = 255;
  97                 }
  98         }
  99 }
 100
 101 WindowManager::~WindowManager()
 102 {
 103         delete root_win;
 104 }
 105
 106 void WindowManager::invalidate_region(const Rect &rect)
 107 {
 108         dirty_rects.push_back(rect);
 109 }
 110
 111 void WindowManager::process_windows()
 112 {
 113         if(dirty_rects.empty()) {
 114                 return;
 115         }
 116
 117         std::list<Rect>::iterator drit = dirty_rects.begin();
 118         Rect uni = *drit++;
 119         while(drit != dirty_rects.end()) {
 120                 uni = rect_union(uni, *drit++);
 121         }
 122         dirty_rects.clear();
 123
 124         wait_vsync();
 125
 126         fill_rect(uni, bg_color[0], bg_color[1], bg_color[2]);
 127
 128         root_win->draw_children(uni);
 129
 130         // draw mouse cursor
 131         int mouse_x, mouse_y;
 132         get_pointer_pos(&mouse_x, &mouse_y);
 133
 134         blit_key(mouse_cursor.get_image(), mouse_cursor.get_rect(),
 135                         get_framebuffer(), get_screen_size(), mouse_x, mouse_y,
 136                         0, 0, 0);
 137
 138         Rect mouse_rect = {mouse_x, mouse_y, mouse_cursor.get_width(), mouse_cursor.get_height()};
 139         invalidate_region(mouse_rect);
 140
 141         gfx_update();
 142 }
 143
 144 void WindowManager::add_window(Window *win)
 145 {
 146         if(!win || win == root_win) {
 147                 return;
 148         }
 149
 150         root_win->add_child(win);
 151
 152         if(windows.empty()) {
 153                 focused_win = win;
 154         }
 155
 156         if(win->get_managed()) {
 157                 create_frame(win);
 158         }
 159
 160         windows.push_back(win);
 161 }
 162
 163 void WindowManager::remove_window(Window *win)
 164 {
 165         std::list<Window*>::iterator it;
 166         it = std::find(windows.begin(), windows.end(), win);
 167
 168         if(it != windows.end()) {
 169                 windows.erase(it);
 170         }
 171 }
 172
 173 void WindowManager::set_focused_window(Window *win)
 174 {
 175         if(win && win == focused_win) {
 176                 return;
 177         }
 178
 179         Window *parent;
 180         if(focused_win) {
 181                 // invalidate the frame (if any)
 182                 parent = focused_win->get_parent();
 183                 if(parent && parent != root_win) {
 184                         parent->invalidate();
 185                         fill_rect(parent->get_absolute_rect(), frame_ucolor[0], frame_ucolor[1], frame_ucolor[2]);
 186                 }
 187         }
 188
 189         if(!win) {
 190                 focused_win = 0;
 191                 return;
 192         }
 193
 194         if(win->get_focusable()) {
 195                 focused_win = win;
 196                 parent = focused_win->get_parent();
 197                 fill_rect(parent->get_absolute_rect(), frame_fcolor[0], frame_fcolor[1], frame_fcolor[2]);
 198                 return;
 199         }
 200
 201         Window **children = win->get_children();
 202         for(int i=0; i<win->get_children_count(); i++) {
 203                 if(children[0]->get_focusable()) {
 204                         set_focused_window(children[0]);
 205                         fill_rect(win->get_absolute_rect(), frame_fcolor[0], frame_fcolor[1], frame_fcolor[2]);
 206                         return;
 207                 }
 208         }
 209
 210         focused_win = 0;
 211 }
 212
 213 const Window *WindowManager::get_focused_window() const
 214 {
 215         return focused_win;
 216 }
 217
 218 Window *WindowManager::get_focused_window()
 219 {
 220         return focused_win;
 221 }
 222
 223 Window *WindowManager::get_window_at_pos(int pointer_x, int pointer_y)
 224 {
 225         Window *root_win = wm->get_root_window();
 226         Window **children = root_win->get_children();
 227         for(int i=root_win->get_children_count() - 1; i>=0; i--) {
 228                 if(children[i]->contains_point(pointer_x, pointer_y)) {
 229                         return children[i];
 230                 }
 231         }
 232
 233         return 0;
 234 }
 235
 236 Window *WindowManager::get_root_window() const
 237 {
 238         return root_win;
 239 }
 240
 241 void WindowManager::set_focused_frame_color(int r, int g, int b)
 242 {
 243         frame_fcolor[0] = r;
 244         frame_fcolor[1] = g;
 245         frame_fcolor[2] = b;
 246 }
 247
 248 void WindowManager::get_focused_frame_color(int *r, int *g, int *b) const
 249 {
 250         *r = frame_fcolor[0];
 251         *g = frame_fcolor[1];
 252         *b = frame_fcolor[2];
 253 }
 254
 255 void WindowManager::set_unfocused_frame_color(int r, int g, int b)
 256 {
 257         frame_ucolor[0] = r;
 258         frame_ucolor[1] = g;
 259         frame_ucolor[2] = b;
 260 }
 261
 262 void WindowManager::get_unfocused_frame_color(int *r, int *g, int *b) const
 263 {
 264         *r = frame_ucolor[0];
 265         *g = frame_ucolor[1];
 266         *b = frame_ucolor[2];
 267 }
 268
 269 Window *WindowManager::get_grab_window() const
 270 {
 271         return grab_win;
 272 }
 273
 274 void WindowManager::grab_mouse(Window *win)
 275 {
 276         grab_win = win;
 277 }
 278
 279 void WindowManager::release_mouse()
 280 {
 281         grab_win = 0;
 282 }
 283
 284 void WindowManager::raise_window(Window *win)
 285 {
 286         if(!win) {
 287                 return;
 288         }
 289
 290         Window *parent = win->get_parent();
 291         if(parent != root_win) {
 292                 if(parent->get_parent() == root_win) {
 293                         win = parent;
 294                 }
 295                 else {
 296                         return;
 297                 }
 298         }
 299
 300         root_win->remove_child(win);
 301         root_win->add_child(win);
 302 }
 303
 304 void WindowManager::sink_window(Window *win)
 305 {
 306         if(!win) {
 307                 return;
 308         }
 309
 310         std::list<Window*>::iterator it;
 311         it = std::find(windows.begin(), windows.end(), win);
 312         if(it != windows.end()) {
 313                 windows.erase(it);
 314                 windows.push_front(win);
 315         }
 316 }
 317
 318 static void display(Window *win)
 319 {
 320         //frame display:
 321         Window *child = win->get_children()[0];
 322         int r, g, b;
 323         Rect abs_rect = win->get_absolute_rect();
 324
 325         //TODO 5 not hardcoded
 326         set_text_position(abs_rect.x + 5, abs_rect.y + 15);
 327         set_text_color(255, 255, 255);
 328
 329         if(child == wm->get_focused_window()) {
 330                 wm->get_focused_frame_color(&r, &g, &b);
 331                 fill_rect(abs_rect, r, g, b);
 332         }
 333         else {
 334                 wm->get_unfocused_frame_color(&r, &g, &b);
 335                 fill_rect(win->get_absolute_rect(), r, g, b);
 336         }
 337
 338         draw_text(child->get_title());
 339 }
 340
 341 static int prev_x, prev_y;
 342
 343 static void mouse(Window *win, int bn, bool pressed, int x, int y)
 344 {
 345         if(bn == 0) {
 346                 if(pressed) {
 347                         wm->grab_mouse(win);
 348                         wm->raise_window(win);
 349                         prev_x = x;
 350                         prev_y = y;
 351                 }
 352                 else {
 353                         wm->release_mouse();
 354                 }
 355         }
 356 }
 357
 358 static void motion(Window *win, int x, int y)
 359 {
 360         int left_bn = get_button(0);
 361
 362         if(left_bn) {
 363                 int dx = x - prev_x;
 364                 int dy = y - prev_y;
 365                 prev_x = x - dx;
 366                 prev_y = y - dy;
 367
 368                 Rect rect = win->get_rect();
 369                 win->move(rect.x + dx, rect.y + dy);
 370         }
 371 }