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);
  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         parent->add_child(frame);
  39 }
  40
  41 void WindowManager::destroy_frame(Window *win)
  42 {
  43         Window *frame = win->parent;
  44         if(!frame) {
  45                 return;
  46         }
  47
  48         std::list<Window*>::iterator it;
  49         it = std::find(windows.begin(), windows.end(), frame);
  50         if(it != windows.end()) {
  51                 root_win->add_child(win);
  52                 windows.erase(it);
  53                 delete frame;
  54         }
  55 }
  56
  57 WindowManager::WindowManager()
  58 {
  59         if(!wm) {
  60                 wm = this;
  61         } else {
  62                 throw std::runtime_error("Trying to create a second instance of WindowManager!\n");
  63         }
  64
  65         root_win = new Window;
  66         root_win->resize(get_screen_size().width, get_screen_size().height);
  67         root_win->move(0, 0);
  68         root_win->set_managed(false);
  69
  70         focused_win = 0;
  71
  72         bg_color[0] = 210;
  73         bg_color[1] = 106;
  74         bg_color[2] = 106;
  75
  76         frame_thickness = 2;
  77         titlebar_thickness = 4;
  78
  79         frame_fcolor[0] = frame_fcolor[1] = frame_fcolor[2] = 142;
  80         frame_ucolor[0] = frame_ucolor[1] = frame_ucolor[2] = 210;
  81
  82         mouse_cursor.set_image(mouse_cursor_width, mouse_cursor_height);
  83         unsigned char *pixels = mouse_cursor.get_image();
  84
  85         for(int i=0; i<mouse_cursor_height; i++) {
  86                 for(int j=0; j<mouse_cursor_width; j++) {
  87                         int val = mouse_cursor_bw[i * mouse_cursor_width + j];
  88                         *pixels++ = val;
  89                         *pixels++ = val;
  90                         *pixels++ = val;
  91                         *pixels++ = 255;
  92                 }
  93         }
  94 }
  95
  96 WindowManager::~WindowManager()
  97 {
  98         delete root_win;
  99 }
 100
 101 void WindowManager::invalidate_region(const Rect &rect)
 102 {
 103         dirty_rects.push_back(rect);
 104 }
 105
 106 void WindowManager::process_windows()
 107 {
 108         if(dirty_rects.empty()) {
 109                 return;
 110         }
 111
 112         std::list<Rect>::iterator drit = dirty_rects.begin();
 113         Rect uni = *drit++;
 114         while(drit != dirty_rects.end()) {
 115                 uni = rect_union(uni, *drit++);
 116         }
 117         dirty_rects.clear();
 118
 119         fill_rect(uni, bg_color[0], bg_color[1], bg_color[2]);
 120
 121         root_win->draw_children(uni);
 122
 123         // draw mouse cursor
 124         int mouse_x, mouse_y;
 125         get_pointer_pos(&mouse_x, &mouse_y);
 126
 127         blit_key(mouse_cursor.get_image(), mouse_cursor.get_rect(),
 128                         get_framebuffer(), get_screen_size(), mouse_x, mouse_y,
 129                         0, 0, 0);
 130
 131         Rect mouse_rect = {mouse_x, mouse_y, mouse_cursor.get_width(), mouse_cursor.get_height()};
 132         invalidate_region(mouse_rect);
 133 }
 134
 135 void WindowManager::add_window(Window *win)
 136 {
 137         if(!win || win == root_win) {
 138                 return;
 139         }
 140
 141         root_win->add_child(win);
 142
 143         if(windows.empty()) {
 144                 focused_win = win;
 145         }
 146
 147         if(win->get_managed()) {
 148                 create_frame(win);
 149         }
 150
 151         windows.push_back(win);
 152 }
 153
 154 void WindowManager::remove_window(Window *win)
 155 {
 156         std::list<Window*>::iterator it;
 157         it = std::find(windows.begin(), windows.end(), win);
 158
 159         if(it != windows.end()) {
 160                 windows.erase(it);
 161         }
 162 }
 163
 164 void WindowManager::set_focused_window(Window *win)
 165 {
 166         if(!win) {
 167                 focused_win = 0;
 168                 return;
 169         }
 170
 171         if(win->get_focusable()) {
 172                 focused_win = win;
 173                 return;
 174         }
 175
 176         Window **children = win->get_children();
 177         for(int i=0; i<win->get_children_count(); i++) {
 178                 if(children[0]->get_focusable()) {
 179                         set_focused_window(children[0]);
 180                         return;
 181                 }
 182         }
 183
 184         focused_win = 0;
 185 }
 186
 187 const Window *WindowManager::get_focused_window() const
 188 {
 189         return focused_win;
 190 }
 191
 192 Window *WindowManager::get_focused_window()
 193 {
 194         return focused_win;
 195 }
 196
 197 Window *WindowManager::get_window_at_pos(int pointer_x, int pointer_y)
 198 {
 199         std::list<Window*>::reverse_iterator rit = windows.rbegin();
 200         while(rit != windows.rend()) {
 201                 Window *w = *rit++;
 202                 Window *parent = w->get_parent();
 203
 204                 if(parent == root_win && w->contains_point(pointer_x, pointer_y)) {
 205                         return w;
 206                 }
 207         }
 208
 209         return 0;
 210 }
 211
 212 static void display(Window *win)
 213 {
 214         if(win->get_managed()) {
 215                 fill_rect(win->get_rect(), 255, 211, 5);
 216                 win->draw(win->get_parent()->get_rect());
 217         }
 218 }
 219
 220 static int prev_x = -1, prev_y;
 221
 222 static void mouse(Window *win, int bn, bool pressed)
 223 {
 224         printf("mouse callback (%d, %s)\n", bn, pressed ? "pressed" : "released");
 225         if(bn == 0) {
 226                 if(pressed) {
 227                         get_pointer_pos(&prev_x, &prev_y);
 228                 } else {
 229                         prev_x = -1;
 230                 }
 231         }
 232 }
 233
 234 static void motion(Window *win, int x, int y)
 235 {
 236         int left_bn = get_button(0);
 237         if(left_bn && prev_x != -1) {
 238                 int dx = x - prev_x;
 239                 int dy = y - prev_y;
 240                 prev_x = x;
 241                 prev_y = y;
 242
 243                 Rect rect = win->get_rect();
 244                 win->move(rect.x + dx, rect.y + dy);
 245         }
 246 }