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Start working on a GUI kernel API.

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This commit is contained in:
Andreas Kling 2019-01-13 01:59:38 +01:00
parent becc2c7fa5
commit 8f8c8d1ca3
17 changed files with 150 additions and 11 deletions
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77
Kernel/ProcessGUI.cpp Normal file
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#include "Process.h"
#include "MemoryManager.h"
#include <LibC/errno_numbers.h>
#include <Widgets/AbstractScreen.h>
#include <Widgets/FrameBuffer.h>
#include <Widgets/EventLoop.h>
#include <Widgets/Font.h>
#include <Widgets/Widget.h>
#include <Widgets/Window.h>
#include <Widgets/WindowManager.h>
void Process::initialize_gui_statics()
{
Font::initialize();
FrameBuffer::initialize();
EventLoop::initialize();
WindowManager::initialize();
AbstractScreen::initialize();
new EventLoop;
}
static void wait_for_gui_server()
{
// FIXME: Time out after a while and return an error.
while (!EventLoop::main().running())
sleep(10);
}
int Process::gui$create_window(const GUI_CreateWindowParameters* user_params)
{
wait_for_gui_server();
if (!validate_read_typed(user_params))
return -EFAULT;
GUI_CreateWindowParameters params = *user_params;
Rect rect { params.rect.x, params.rect.y, params.rect.width, params.rect.height };
if (rect.is_empty())
return -EINVAL;
ProcessPagingScope scope(EventLoop::main().server_process());
auto* window = new Window;
if (!window)
return -ENOMEM;
int window_id = m_windows.size();
m_windows.append(window);
window->setTitle(params.title);
window->setRect(rect);
auto* main_widget = new Widget;
window->setMainWidget(main_widget);
main_widget->setWindowRelativeRect({ 0, 0, rect.width(), rect.height() });
main_widget->setBackgroundColor(params.background_color);
main_widget->setFillWithBackgroundColor(true);
dbgprintf("%s<%u> gui$create_window: %d with rect {%d,%d %dx%d}\n", name().characters(), pid(), window_id, rect.x(), rect.y(), rect.width(), rect.height());
return window_id;
}
int Process::gui$destroy_window(int window_id)
{
wait_for_gui_server();
dbgprintf("%s<%u> gui$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 -EBADWIN;
auto* window = m_windows[window_id];
m_windows.remove(window_id);
window->deleteLater();
return 0;
}