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Share GraphicsBitmaps between the windowing server and the client process.

Browse source 
This is pretty cool. :^)

GraphicsBitmaps are now mapped into both the server and the client address
space (usually at different addresses but that doesn't matter.)

Added a GUI syscall for getting a window's backing store, and another one
for invalidating a window so that the server redraws it.
This commit is contained in:
Andreas Kling 2019-01-14 15:25:34 +01:00
parent b0e3f73375
commit 0c5ecd303c
13 changed files with 139 additions and 46 deletions
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38
Kernel/ProcessGUI.cpp
View file

@ -25,8 +25,11 @@ void Process::initialize_gui_statics()
int Process::make_window_id()
{
int new_id = m_next_window_id++;
while (!new_id || m_windows.contains(new_id))
while (!new_id || m_windows.contains(new_id)) {
new_id = m_next_window_id++;
if (new_id < 0)
new_id = 1;
}
return new_id;
}
@ -74,11 +77,40 @@ int Process::gui$destroy_window(int window_id)
dbgprintf("%s<%u> gui$destroy_window (window_id=%d)\n", name().characters(), pid(), window_id);
if (window_id < 0)
return -EINVAL;
if (window_id >= static_cast<int>(m_windows.size()))
return -EBADWINDOW;
auto it = m_windows.find(window_id);
if (it == m_windows.end())
return -EBADWINDOW;
m_windows.remove(window_id);
return 0;
}
int Process::gui$get_window_backing_store(int window_id, GUI_WindowBackingStoreInfo* info)
{
dbgprintf("%s<%u> gui$get_window_backing_store (window_id=%d, info=%p)\n", name().characters(), pid(), window_id, info);
if (!validate_write_typed(info))
return -EFAULT;
if (window_id < 0)
return -EINVAL;
auto it = m_windows.find(window_id);
if (it == m_windows.end())
return -EBADWINDOW;
auto& window = *(*it).value;
info->bpp = sizeof(RGBA32);
info->pitch = window.backing()->pitch();
info->size = window.backing()->size();
info->pixels = reinterpret_cast<RGBA32*>(window.backing()->client_region()->linearAddress.asPtr());
return 0;
}
int Process::gui$invalidate_window(int window_id)
{
dbgprintf("%s<%u> gui$invalidate_window (window_id=%d)\n", name().characters(), pid(), window_id);
if (window_id < 0)
return -EINVAL;
auto it = m_windows.find(window_id);
if (it == m_windows.end())
return -EBADWINDOW;
auto& window = *(*it).value;
WindowManager::the().invalidate(window);
return 0;
}