/**
* This function sets the height, width, x_start, y_start (upper left coords),
* x_end, and y_end (lower right) variables of the student's window. These
* values are used in operations such as mouse movement. returns false on
* failure and does not set variables.
*/
bool populateWindowData(std::string window_name, int& height, int& width,
int& x_start, int& x_end, int& y_start, int& y_end){
if(windowExists(window_name)) {
std::vector<int> height_vec, width_vec, x_start_vec, y_start_vec;
// getWindowData returns a vector of ints associated with the query term
// (e.g. 'Height')
height_vec = getWindowData("Height", window_name);
width_vec = getWindowData("Width", window_name);
//These two values represent the upper left corner
x_start_vec = getWindowData("Absolute upper-left X", window_name);
y_start_vec = getWindowData("Absolute upper-left Y", window_name);
//The lines below should never return false, as the Height, Width, etc.
//fields should always be populated if the window exists. The only way that
// I can see for these to fail would be if xdotool changes or the window
// fails/shuts in this block.
if(height_vec.size() > 0){ height = height_vec[0];} else{ return false; }
if(width_vec.size() > 0) { width = width_vec[0];} else{ return false; }
if(x_start_vec.size() > 0){ x_start= x_start_vec[0];} else{ return false; }
if(y_start_vec.size() > 0){ y_start= y_start_vec[0];} else{ return false; }
//These values represent the upper right corner
x_end = x_start+width;
y_end = y_start + height;
return true;
}
else
{
std::cout << "Attempted to populate window data using a nonexistent window"
<< std::endl;
return false;
}
}
GlaerContext * getCurrentGlaerContext() {
GLFWwindow *handle = glfwGetCurrentContext();
if (!handle) {
throw window_error("no current context");
}
return &(getWindowData(handle)->context);
}
void Window::makeContextCurrent() {
glfwMakeContextCurrent(m_handle);
WindowData *wd = getWindowData(m_handle);
// init glaer
if (!wd->init_done) {
gecom::log("Window") << "GLAER initializing...";
//GLenum t_err = glGetError();
//gecom::log("Window") << "GLEW t_err: " << t_err;
if (!glaerInitCurrentContext()) {
gecom::log("Window").error() << "GLAER initialization failed:";
glfwTerminate();
std::abort();
}
// clear any GL errors from init
GLenum gl_err = glGetError();
while (gl_err) {
gecom::log("Window") << "GLAER initialization left GL error " << gl_err;
gl_err = glGetError();
}
//gecom::log("Window") << "GL Error: " << gluErrorString(gl_err);
gecom::log("Window") << "GL version string: " << glGetString(GL_VERSION);
gecom::log("Window").information(0) << "GLAER initialized";
wd->init_done = true;
// enable GL_ARB_debug_output if available
if (glfwExtensionSupported("GL_ARB_debug_output")) {
// this allows the error location to be determined from a stacktrace
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
// set the callback
glDebugMessageCallback(callbackDebugGL, this);
glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, nullptr, true);
log("Window") << "GL debug callback installed";
} else {
log("Window") << "GL_ARB_debug_output not available";
}
}
}
bool Window::pollMouseButton(int button) {
WindowData *wd = getWindowData(m_handle);
bool b = wd->mb.test(button);
wd->mb.reset(button);
return b;
}
bool Window::getMouseButton(int button) {
return getWindowData(m_handle)->mb.test(button);
}
bool Window::pollKey(int key) {
WindowData *wd = getWindowData(m_handle);
bool b = wd->vk.test(key);
wd->vk.reset(key);
return b;
}
bool Window::getKey(int key) {
return getWindowData(m_handle)->vk.test(key);
}
void Window::destroy() {
// must only be called from the main thread
delete getWindowData(m_handle);
glfwDestroyWindow(m_handle);
}
static LRESULT CALLBACK areaWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
void *data;
DWORD which;
uintptr_t heldButtons = (uintptr_t) wParam;
LRESULT lResult;
data = getWindowData(hwnd, uMsg, wParam, lParam, &lResult);
if (data == NULL)
return lResult;
switch (uMsg) {
case WM_PAINT:
paintArea(hwnd, data);
return 0;
case WM_ERASEBKGND:
// don't draw a background; we'll do so when painting
// this is to make things flicker-free; see http://msdn.microsoft.com/en-us/library/ms969905.aspx
return 1;
case WM_HSCROLL:
scrollArea(hwnd, data, wParam, SB_HORZ);
return 0;
case WM_VSCROLL:
scrollArea(hwnd, data, wParam, SB_VERT);
return 0;
case WM_SIZE:
adjustAreaScrollbars(hwnd, data);
return 0;
case WM_ACTIVATE:
// don't keep the double-click timer running if the user switched programs in between clicks
areaResetClickCounter(data);
return 0;
case WM_MOUSEMOVE:
areaMouseEvent(hwnd, data, 0, FALSE, heldButtons, lParam);
return 0;
case WM_LBUTTONDOWN:
SetFocus(hwnd);
areaMouseEvent(hwnd, data, 1, FALSE, heldButtons, lParam);
return 0;
case WM_LBUTTONUP:
areaMouseEvent(hwnd, data, 1, TRUE, heldButtons, lParam);
return 0;
case WM_MBUTTONDOWN:
SetFocus(hwnd);
areaMouseEvent(hwnd, data, 2, FALSE, heldButtons, lParam);
return 0;
case WM_MBUTTONUP:
areaMouseEvent(hwnd, data, 2, TRUE, heldButtons, lParam);
return 0;
case WM_RBUTTONDOWN:
SetFocus(hwnd);
areaMouseEvent(hwnd, data, 3, FALSE, heldButtons, lParam);
return 0;
case WM_RBUTTONUP:
areaMouseEvent(hwnd, data, 3, TRUE, heldButtons, lParam);
return 0;
case WM_XBUTTONDOWN:
SetFocus(hwnd);
// values start at 1; we want them to start at 4
which = (DWORD) GET_XBUTTON_WPARAM(wParam) + 3;
heldButtons = (uintptr_t) GET_KEYSTATE_WPARAM(wParam);
areaMouseEvent(hwnd, data, which, FALSE, heldButtons, lParam);
return TRUE; // XBUTTON messages are different!
case WM_XBUTTONUP:
which = (DWORD) GET_XBUTTON_WPARAM(wParam) + 3;
heldButtons = (uintptr_t) GET_KEYSTATE_WPARAM(wParam);
areaMouseEvent(hwnd, data, which, TRUE, heldButtons, lParam);
return TRUE;
case msgAreaKeyDown:
return (LRESULT) areaKeyEvent(data, FALSE, wParam, lParam);
case msgAreaKeyUp:
return (LRESULT) areaKeyEvent(data, TRUE, wParam, lParam);
case msgAreaSizeChanged:
adjustAreaScrollbars(hwnd, data);
repaintArea(hwnd, NULL); // this calls for an update
return 0;
case msgAreaGetScroll:
getScrollPos(hwnd, (int *) wParam, (int *) lParam);
return 0;
case msgAreaRepaint:
repaintArea(hwnd, (RECT *) lParam);
return 0;
case msgAreaRepaintAll:
repaintArea(hwnd, NULL);
return 0;
default:
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
xmissedmsg("Area", "areaWndProc()", uMsg);
return 0; // unreached
}
