Usermode/Applications/axwin3_src/WM/wm.c

   1 /*
   2  * Acess2 Window Manager v3
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * wm.c
   6  * - Window manager core
   7  */
   8 #include <common.h>
   9 #include <wm_renderer.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <video.h>
  13 #include <wm_messages.h>
  14
  15 // === IMPORTS ===
  16 extern void     IPC_SendWMMessage(tIPC_Client *Client, uint32_t Src, uint32_t Dst, int Msg, int Len, void *Data);
  17
  18 // === GLOBALS ===
  19 tWMRenderer     *gpWM_Renderers;
  20 tWindow *gpWM_RootWindow;
  21
  22 // === CODE ===
  23 void WM_Initialise(void)
  24 {
  25         WM_CreateWindow(NULL, NULL, 0, 0x0088FF, "Background");
  26         gpWM_RootWindow->W = giScreenWidth;
  27         gpWM_RootWindow->H = giScreenHeight;
  28         gpWM_RootWindow->Flags = WINFLAG_SHOW;
  29 }
  30
  31 void WM_RegisterRenderer(tWMRenderer *Renderer)
  32 {
  33         // TODO: Catch out duplicates
  34         Renderer->Next = gpWM_Renderers;
  35         gpWM_Renderers = Renderer;
  36 }
  37
  38 // --- Manipulation
  39 tWindow *WM_CreateWindow(tWindow *Parent, tIPC_Client *Client, uint32_t ID, int RendererArg, const char *RendererName)
  40 {
  41         tWMRenderer     *renderer;
  42         tWindow *ret;
  43
  44         // - Get Renderer
  45         for( renderer = gpWM_Renderers; renderer; renderer = renderer->Next )
  46         {
  47                 if(strcmp(RendererName, renderer->Name) == 0)
  48                         break;
  49         }
  50         if(renderer == NULL)
  51                 return NULL;
  52
  53         if(!Parent)
  54                 Parent = gpWM_RootWindow;
  55
  56         // - Call create window function
  57         ret = renderer->CreateWindow(RendererArg);
  58         ret->Client = Client;
  59         ret->ID = ID;
  60         ret->Parent = Parent;
  61         ret->Renderer = renderer;
  62         ret->Flags = WINFLAG_CLEAN;     // Needed to stop invaildate early exiting
  63
  64         // Append to parent
  65         if(Parent)
  66         {
  67                 if(Parent->LastChild)
  68                         Parent->LastChild->NextSibling = ret;
  69                 else
  70                         Parent->FirstChild = ret;
  71                 ret->PrevSibling = Parent->LastChild;
  72                 Parent->LastChild = ret;
  73                 ret->NextSibling = NULL;
  74         }
  75         else
  76         {
  77                 gpWM_RootWindow = ret;
  78         }
  79
  80         // - Return!
  81         return ret;
  82 }
  83
  84 tWindow *WM_CreateWindowStruct(size_t ExtraSize)
  85 {
  86         tWindow *ret;
  87
  88         ret = calloc( sizeof(tWindow) + ExtraSize, 1 );
  89         ret->RendererInfo = ret + 1;    // Get end of tWindow
  90
  91         return ret;
  92 }
  93
  94 void WM_RaiseWindow(tWindow *Window)
  95 {
  96         tWindow *parent = Window->Parent;
  97         if(!Window->Parent)     return ;
  98
  99         // Remove from list
 100         if(Window->PrevSibling)
 101                 Window->PrevSibling->NextSibling = Window->NextSibling;
 102         if(Window->NextSibling)
 103                 Window->NextSibling->PrevSibling = Window->PrevSibling;
 104         if(parent->FirstChild == Window)
 105                 parent->FirstChild = Window->NextSibling;
 106         if(parent->LastChild == Window)
 107                 parent->LastChild = Window->PrevSibling;
 108
 109         // Append to end
 110         if(parent->LastChild)
 111                 parent->LastChild->NextSibling = Window;
 112         else
 113                 parent->FirstChild = Window;
 114         Window->PrevSibling = parent->LastChild;
 115         Window->NextSibling = NULL;
 116         parent->LastChild = Window;
 117 }
 118
 119 void WM_ShowWindow(tWindow *Window, int bShow)
 120 {
 121         // Message window
 122         struct sWndMsg_Bool     _msg;
 123
 124         _msg.Val = !!bShow;
 125         WM_SendMessage(NULL, Window, WNDMSG_SHOW, sizeof(_msg), &_msg);
 126
 127         if(bShow)
 128                 Window->Flags |= WINFLAG_SHOW;
 129         else
 130                 Window->Flags &= ~WINFLAG_SHOW;
 131         WM_Invalidate(Window);
 132 }
 133
 134 int WM_MoveWindow(tWindow *Window, int X, int Y)
 135 {
 136         // Clip coordinates
 137         if(X + Window->W < 0)   X = -Window->W + 1;
 138         if(Y + Window->H < 0)   Y = -Window->H + 1;
 139         if(X >= giScreenWidth)  X = giScreenWidth - 1;
 140         if(Y >= giScreenHeight) Y = giScreenHeight - 1;
 141
 142         Window->X = X;  Window->Y = Y;
 143
 144         WM_Invalidate(Window);
 145
 146         return 0;
 147 }
 148
 149 int WM_ResizeWindow(tWindow *Window, int W, int H)
 150 {
 151         if(W <= 0 || H <= 0 )   return 1;
 152         if(Window->X + W < 0)   Window->X = -W + 1;
 153         if(Window->Y + H < 0)   Window->Y = -H + 1;
 154
 155         Window->W = W;  Window->H = H;
 156
 157         WM_Invalidate(Window);
 158
 159         {
 160                 struct sWndMsg_Resize   msg;
 161                 msg.W = W;
 162                 msg.H = H;
 163                 WM_SendMessage(NULL, Window, WNDMSG_RESIZE, sizeof(msg), &msg);
 164         }
 165
 166         return 0;
 167 }
 168
 169 int WM_SendMessage(tWindow *Source, tWindow *Dest, int Message, int Length, void *Data)
 170 {
 171         if(Dest == NULL)        return -2;
 172         if(Length > 0 && Data == NULL)  return -1;
 173
 174         // ->HandleMessage returns 1 when the message was not handled
 175         if( Dest->Renderer->HandleMessage(Dest, Message, Length, Data) != 1 )
 176         {
 177                 // TODO: Catch errors from ->HandleMessage
 178                 return 0;
 179         }
 180
 181         // TODO: Implement message masking
 182
 183         if(Dest->Client)
 184         {
 185                 uint32_t        src_id;
 186                 if(!Source)
 187                         src_id = -1;
 188                 else if(Source->Client != Dest->Client) {
 189                         // TODO: Support different client source windows
 190                         _SysDebug("WM_SendMessage: TODO - Support inter-client messages");
 191                         return -1;
 192                 }
 193                 else {
 194                         src_id = Source->ID;
 195                 }
 196
 197                 IPC_SendWMMessage(Dest->Client, src_id, Dest->ID, Message, Length, Data);
 198         }
 199
 200         return 1;
 201 }
 202
 203 void WM_Invalidate(tWindow *Window)
 204 {
 205         _SysDebug("Invalidating %p", Window);
 206         // Don't invalidate twice (speedup)
 207 //      if( !(Window->Flags & WINFLAG_CLEAN) )  return;
 208
 209         // Mark for re-render
 210         Window->Flags &= ~WINFLAG_CLEAN;
 211
 212         // Mark up the tree that a child window has changed
 213         while( (Window = Window->Parent) )
 214                 Window->Flags &= ~WINFLAG_CHILDCLEAN;
 215 }
 216
 217 // --- Rendering / Update
 218 void WM_int_UpdateWindow(tWindow *Window)
 219 {
 220         tWindow *child;
 221
 222         // Ignore hidden windows
 223         if( !(Window->Flags & WINFLAG_SHOW) )
 224                 return ;
 225
 226         // Render
 227         if( !(Window->Flags & WINFLAG_CLEAN) )
 228         {
 229                 Window->Renderer->Redraw(Window);
 230                 Window->Flags |= WINFLAG_CLEAN;
 231         }
 232
 233         // Process children
 234         if( !(Window->Flags & WINFLAG_CHILDCLEAN) )
 235         {
 236                 for( child = Window->FirstChild; child; child = child->NextSibling )
 237                 {
 238                         WM_int_UpdateWindow(child);
 239                 }
 240                 Window->Flags |= WINFLAG_CHILDCLEAN;
 241         }
 242
 243 }
 244
 245 void WM_int_BlitWindow(tWindow *Window)
 246 {
 247         tWindow *child;
 248
 249         // Ignore hidden windows
 250         if( !(Window->Flags & WINFLAG_SHOW) )
 251                 return ;
 252
 253         _SysDebug("Blit %p to (%i,%i) %ix%i", Window, Window->X, Window->Y, Window->W, Window->H);
 254         Video_Blit(Window->RenderBuffer, Window->X, Window->Y, Window->W, Window->H);
 255
 256         for( child = Window->FirstChild; child; child = child->NextSibling )
 257         {
 258                 WM_int_BlitWindow(child);
 259         }
 260 }
 261
 262 void WM_Update(void)
 263 {
 264         // Don't redraw if nothing has changed
 265         if( (gpWM_RootWindow->Flags & WINFLAG_CHILDCLEAN) )
 266                 return ;
 267
 268         // - Iterate through visible windows, updating them as needed
 269         WM_int_UpdateWindow(gpWM_RootWindow);
 270
 271         // - Draw windows from back to front to the render buffer
 272         WM_int_BlitWindow(gpWM_RootWindow);
 273
 274         Video_Update();
 275 }
 276