private static unsafe void MarkRectange(int x, int y, int width, int height)
{
var DamageRect = (Rect *)Libc.malloc(sizeof(Rect));
DamageRect->X = x;
DamageRect->Y = y;
DamageRect->Width = width;
DamageRect->Height = height;
Monitor.AcquireLock(ref RedrawRectsLock);
RedrawRects.Enqueue((uint)DamageRect);
Monitor.ReleaseLock(ref RedrawRectsLock);
}
private static unsafe void HandleNewWindow(GuiRequest *aRequest)
{
var WindowRequest = (NewWindow *)aRequest;
int x = WindowRequest->X;
int y = WindowRequest->Y;
int width = WindowRequest->Width;
int height = WindowRequest->Height;
if (width <= 0 || height <= 0)
{
aRequest->Error = ErrorType.BadParameters;
}
if (aRequest->Error != ErrorType.None)
{
ReplyClient(aRequest);
return;
}
var window = new Window(aRequest->ClientID, x, y, width, height);
Marshal.Copy(window.HashID, WindowRequest->Buffer, window.HashID.Length);
Monitor.AcquireLock(ref WindowsLock);
int id = Windows.Count;
window.ID = id;
WindowRequest->WindowID = id;
Windows.Add(window);
Monitor.ReleaseLock(ref WindowsLock);
ActiveWindow = window;
Monitor.AcquireLock(ref StackingLock);
Stacking.Add(window);
Monitor.ReleaseLock(ref StackingLock);
ReplyClient(aRequest);
}
private static unsafe void Renderer()
{
int tmp_mouse_X, tmp_mouse_Y;
int old_mouse_X = -1, old_mouse_Y = -1;
bool update;
while (true)
{
tmp_mouse_X = Mouse_X;
tmp_mouse_Y = Mouse_Y;
update = false;
Cairo.Save(MainContext);
Cairo.Save(VideoContext);
if (tmp_mouse_X != old_mouse_X || tmp_mouse_Y != old_mouse_Y)
{
update = true;
Cairo.Rectangle(32, 32, old_mouse_Y, old_mouse_X, MainContext);
Cairo.Rectangle(32, 32, old_mouse_Y, old_mouse_X, VideoContext);
Cairo.Rectangle(32, 32, tmp_mouse_Y, tmp_mouse_X, VideoContext);
}
old_mouse_X = tmp_mouse_X;
old_mouse_Y = tmp_mouse_Y;
var queue = RedrawRects;
Monitor.AcquireLock(ref RedrawRectsLock);
while (queue.Count > 0)
{
var rect = (Rect *)queue.Dequeue();
Cairo.Rectangle(rect->Height, rect->Width, rect->Y, rect->X, MainContext);
Cairo.Rectangle(rect->Height, rect->Width, rect->Y, rect->X, VideoContext);
Libc.free((uint)rect);
update = true;
}
Monitor.ReleaseLock(ref RedrawRectsLock);
if (update)
{
Cairo.Clip(MainContext);
var list = Stacking;
Monitor.AcquireLock(ref StackingLock);
int count = list.Count;
for (int index = 0; index < count; index++)
{
var win = list[index];
Cairo.Save(MainContext);
Cairo.Translate(win.Y, win.X, MainContext);
Cairo.SetSourceSurface(0, 0, win.Surface, MainContext);
Cairo.Paint(MainContext);
Cairo.Restore(MainContext);
}
Monitor.ReleaseLock(ref StackingLock);
}
if (update)
{
Cairo.Clip(VideoContext);
Cairo.Translate(0, 0, VideoContext);
Cairo.SetOperator(Operator.Source, VideoContext);
Cairo.SetSourceSurface(0, 0, MainSurface, VideoContext);
Cairo.Paint(VideoContext);
Cairo.Translate(old_mouse_Y, old_mouse_X, VideoContext);
Cairo.SetOperator(Operator.Over, VideoContext);
Cairo.SetSourceSurface(0, 0, MouseSurface, VideoContext);
Cairo.Paint(VideoContext);
}
Cairo.Restore(MainContext);
Cairo.Restore(VideoContext);
Task.Switch();
}
}
private static unsafe void HandleMouseEvent(GuiRequest *aRequest)
{
var MouseRequest = (MouseEvent *)aRequest;
MouseRequest->Function = MouseFunction.None;
MouseFunction function = 0;
if (MouseRequest->Xpos != 0 || MouseRequest->Ypos != 0)
{
function = MouseFunction.Move;
}
/* calculate new mouse position */
int x = Mouse_X + (MouseRequest->Xpos << 1);
int y = Mouse_Y - (MouseRequest->Ypos << 1);
/* bound mouse position */
if (x < 0)
{
x = 0;
}
if (x > VBE.Xres)
{
x = VBE.Xres;
}
if (y < 0)
{
y = 0;
}
if (y > VBE.Yres)
{
y = VBE.Yres;
}
/* Button Status */
int Button = MouseRequest->Button;
bool LeftBtn = (Button & 0x1) != 0;
bool RightBtn = (Button & 0x2) != 0;
/* stop window movement */
if (LeftBtn)
{
if (MouseWindow != null)
{
var win = MouseWindow;
MarkRectange(win.X, win.Y, win.Width, win.Height);
MouseWindow.X += x - Mouse_X;
MouseWindow.Y += y - Mouse_Y;
MarkRectange(win.X, win.Y, win.Width, win.Height);
}
}
else
{
MouseWindow = null;
}
/* Update Coordinates */
Mouse_X = x;
Mouse_Y = y;
/* Mouse Events to Client */
if ((LeftBtn && !MouseLeftBtn) || (RightBtn && !MouseRightBtn))
{
function |= MouseFunction.KeyDown;
}
if ((!LeftBtn && MouseLeftBtn) || (!RightBtn && MouseRightBtn))
{
function |= MouseFunction.KeyUp;
}
/* button details */
MouseLeftBtn = LeftBtn;
MouseRightBtn = RightBtn;
MouseMiddleBtn = (Button & 0x4) != 0;
if ((function & MouseFunction.KeyDown) != 0)
{
Monitor.AcquireLock(ref StackingLock);
var list = Stacking;
int count = list.Count;
for (int i = count - 1; i >= 0; i--)
{
var win = list[i];
if (x < win.X ||
y < win.Y ||
x > win.X + win.Width ||
y > win.Y + win.Height)
{
continue;
}
if (ActiveWindow == win)
{
function |= MouseFunction.Click;
break;
}
ActiveWindow = win;
function |= MouseFunction.Enter;
if (i != 0)
{
for (int j = i + 1; j < count; j++)
{
list[j - 1] = list[j];
}
list[count - 1] = win;
MarkRectange(win.X, win.Y, win.Width, win.Height);
}
break;
}
Monitor.ReleaseLock(ref StackingLock);
}
if (ActiveWindow == null)
{
return;
}
var Window = ActiveWindow;
if (x < Window.X ||
y < Window.Y ||
x > Window.X + Window.Width ||
y > Window.Y + Window.Height)
{
return;
}
MouseRequest->WindowID = Window.ID;
MouseRequest->Xpos = x - Window.X;
MouseRequest->Ypos = y - Window.Y;
MouseRequest->Function = function;
aRequest->ClientID = Window.ClientID;
ReplyClient(aRequest);
}
internal static unsafe uint Obtain(string aID, uint aSize, bool aDoAllocate = false)
{
Monitor.AcquireLock(ref aLock);
if (!Nodes.ContainsKey(aID))
{
if (!aDoAllocate)
{
Monitor.ReleaseLock(ref aLock);
return(0);
}
CreateNew(aID, aSize);
}
shm_chunk Current;
Current = Nodes[aID];
Current.RefCount++;
var ParentProcess = Scheduler.RunningThread.Process;
var shm_mapping = ParentProcess.shm_mapping;
int FramesRequired = Current.Frames.Length;
int CurrentFrameCount = 0;
for (int i = 0; i < LIMIT_TO_PROCESS; i++)
{
for (int j = 0; j < 32; j++)
{
uint index = (uint)(1 << j);
if ((shm_mapping[i] & index) == 0)
{
CurrentFrameCount++;
if (CurrentFrameCount == FramesRequired)
{
int xOffset = (i << 5) + j - FramesRequired + 1;
uint xVirtualAddress = START + (uint)(xOffset << 12);
uint xReturnAddress = xVirtualAddress;
var CurrentDirectory = Paging.CurrentDirectory;
var Frames = Current.Frames;
int Index = 0;
while (Index < FramesRequired)
{
Paging.AllocateFrame(Paging.GetPage(CurrentDirectory, xVirtualAddress, true), (Frames[Index] << 12), false);
Paging.InvalidatePageAt(xVirtualAddress);
// Also Mark in shm_mapping
shm_mapping[(xOffset >> 5)] |= (uint)(0x1 << (xOffset & 31));
xVirtualAddress += 0x1000;
xOffset++;
Index++;
}
Monitor.ReleaseLock(ref aLock);
return(xReturnAddress);
}
}
else
{
CurrentFrameCount = 0;
}
}
}
Monitor.ReleaseLock(ref aLock);
Debug.Write("shm_mapping failed, Process id:=%d ", ParentProcess.ID);
Debug.Write("shm_id := %s ", aID);
Debug.Write("FramesRequired: %d\n", (uint)FramesRequired);
return(0);
}