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 "wm.h"
   7 #include "window.h"
   8 #include "mouse.h"
   9 #include "mouse_cursor.h"
  10
  11 WindowManager *wm;
  12 static WindowManager wminst;
  13
  14 static void display(Window *win);
  15 static void mouse(Window *win, int bn, bool pressed, int x, int y);
  16 static void motion(Window *win, int x, int y);
  17
  18 void WindowManager::create_frame(Window *win)
  19 {
  20         Window *frame = new Window;
  21         Window *parent = win->get_parent();
  22
  23         frame->set_display_callback(display);
  24         frame->set_mouse_button_callback(mouse);
  25         frame->set_mouse_motion_callback(motion);
  26
  27         frame->add_child(win);
  28         frame->set_focusable(false);
  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         std::list<Window*>::iterator it;
  50         it = std::find(windows.begin(), windows.end(), frame);
  51         if(it != windows.end()) {
  52                 root_win->add_child(win);
  53                 windows.erase(it);
  54                 delete frame;
  55         }
  56 }
  57
  58 WindowManager::WindowManager()
  59 {
  60         if(!wm) {
  61                 wm = this;
  62         } else {
  63                 throw std::runtime_error("Trying to create a second instance of WindowManager!\n");
  64         }
  65
  66         root_win = new Window;
  67         root_win->resize(get_screen_size().width, get_screen_size().height);
  68         root_win->move(0, 0);
  69         root_win->set_managed(false);
  70
  71         focused_win = 0;
  72
  73         bg_color[0] = 210;
  74         bg_color[1] = 106;
  75         bg_color[2] = 106;
  76
  77         frame_thickness = 2;
  78         titlebar_thickness = 4;
  79
  80         frame_fcolor[0] = frame_fcolor[1] = frame_fcolor[2] = 142;
  81         frame_ucolor[0] = frame_ucolor[1] = frame_ucolor[2] = 210;
  82
  83         mouse_cursor.set_image(mouse_cursor_width, mouse_cursor_height);
  84         unsigned char *pixels = mouse_cursor.get_image();
  85
  86         for(int i=0; i<mouse_cursor_height; i++) {
  87                 for(int j=0; j<mouse_cursor_width; j++) {
  88                         int val = mouse_cursor_bw[i * mouse_cursor_width + j];
  89                         *pixels++ = val;
  90                         *pixels++ = val;
  91                         *pixels++ = val;
  92                         *pixels++ = 255;
  93                 }
  94         }
  95 }
  96
  97 WindowManager::~WindowManager()
  98 {
  99         delete root_win;
 100 }
 101
 102 void WindowManager::invalidate_region(const Rect &rect)
 103 {
 104         dirty_rects.push_back(rect);
 105 }
 106
 107 void WindowManager::process_windows()
 108 {
 109         if(dirty_rects.empty()) {
 110                 return;
 111         }
 112
 113         std::list<Rect>::iterator drit = dirty_rects.begin();
 114         Rect uni = *drit++;
 115         while(drit != dirty_rects.end()) {
 116                 uni = rect_union(uni, *drit++);
 117         }
 118         dirty_rects.clear();
 119
 120         wait_vsync();
 121
 122         fill_rect(uni, bg_color[0], bg_color[1], bg_color[2]);
 123
 124         root_win->draw_children(uni);
 125
 126         // draw mouse cursor
 127         int mouse_x, mouse_y;
 128         get_pointer_pos(&mouse_x, &mouse_y);
 129
 130         blit_key(mouse_cursor.get_image(), mouse_cursor.get_rect(),
 131                         get_framebuffer(), get_screen_size(), mouse_x, mouse_y,
 132                         0, 0, 0);
 133
 134         Rect mouse_rect = {mouse_x, mouse_y, mouse_cursor.get_width(), mouse_cursor.get_height()};
 135         invalidate_region(mouse_rect);
 136
 137         gfx_update();
 138 }
 139
 140 void WindowManager::add_window(Window *win)
 141 {
 142         if(!win || win == root_win) {
 143                 return;
 144         }
 145
 146         root_win->add_child(win);
 147
 148         if(windows.empty()) {
 149                 focused_win = win;
 150         }
 151
 152         if(win->get_managed()) {
 153                 create_frame(win);
 154         }
 155
 156         windows.push_back(win);
 157 }
 158
 159 void WindowManager::remove_window(Window *win)
 160 {
 161         std::list<Window*>::iterator it;
 162         it = std::find(windows.begin(), windows.end(), win);
 163
 164         if(it != windows.end()) {
 165                 windows.erase(it);
 166         }
 167 }
 168
 169 void WindowManager::set_focused_window(Window *win)
 170 {
 171         if(win == focused_win) {
 172                 return;
 173         }
 174
 175         if(focused_win) {
 176                 // invalidate the frame (if any)
 177                 Window *parent = focused_win->get_parent();
 178                 if(parent && parent != root_win) {
 179                         parent->invalidate();
 180                 }
 181         }
 182
 183         if(!win) {
 184                 focused_win = 0;
 185                 return;
 186         }
 187
 188         if(win->get_focusable()) {
 189                 focused_win = win;
 190                 return;
 191         }
 192
 193         Window **children = win->get_children();
 194         for(int i=0; i<win->get_children_count(); i++) {
 195                 if(children[0]->get_focusable()) {
 196                         set_focused_window(children[0]);
 197                         return;
 198                 }
 199         }
 200
 201         focused_win = 0;
 202 }
 203
 204 const Window *WindowManager::get_focused_window() const
 205 {
 206         return focused_win;
 207 }
 208
 209 Window *WindowManager::get_focused_window()
 210 {
 211         return focused_win;
 212 }
 213
 214 Window *WindowManager::get_window_at_pos(int pointer_x, int pointer_y)
 215 {
 216         std::list<Window*>::reverse_iterator rit = windows.rbegin();
 217         while(rit != windows.rend()) {
 218                 Window *w = *rit++;
 219                 Window *parent = w->get_parent();
 220
 221                 if(parent == root_win && w->contains_point(pointer_x, pointer_y)) {
 222                         return w;
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 static void display(Window *win)
 230 {
 231         fill_rect(win->get_absolute_rect(), 255, 211, 5);
 232 }
 233
 234 static int prev_x, prev_y;
 235
 236 static void mouse(Window *win, int bn, bool pressed, int x, int y)
 237 {
 238         if(bn == 0) {
 239                 if(pressed) {
 240                         prev_x = x;
 241                         prev_y = y;
 242                 }
 243         }
 244 }
 245
 246 static void motion(Window *win, int x, int y)
 247 {
 248         int left_bn = get_button(0);
 249         if(left_bn) {
 250                 int dx = x - prev_x;
 251                 int dy = y - prev_y;
 252                 prev_x = x - dx;
 253                 prev_y = y - dy;
 254
 255                 Rect rect = win->get_rect();
 256                 win->move(rect.x + dx, rect.y + dy);
 257         }
 258 }