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/* The MIT License
*
* Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "platform.h"
#include "engine.h"
#include "input.h"
#include "logger.h"
#include <cstring>
#include <string>
#include <algorithm>
#include <map>
#include <time.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <GL/glx.h>
struct X11PlatformPrivate {
Display *display;
XVisualInfo *visual;
GLXContext glxContext;
XIM xim;
XIC xic;
Colormap colormap;
Window window;
Cursor cursor;
Atom atomDeleteWindow;
Atom atomClipboard;
Atom atomTargets;
Atom atomText;
Atom atomCompoundText;
Atom atomUTF8String;
bool visible;
bool focused;
int width;
int height;
std::string clipboardText;
std::map<int, unsigned char> keyMap;
} x11;
void Platform::init()
{
x11.display = NULL;
x11.visual = NULL;
x11.glxContext = NULL;
x11.xim = NULL;
x11.xic = NULL;
x11.colormap = None;
x11.window = None;
x11.cursor = None;
x11.visible = false;
x11.focused = false;
x11.width = 0;
x11.height = 0;
// setup keymap
x11.keyMap[XK_1] = KC_1;
x11.keyMap[XK_2] = KC_2;
x11.keyMap[XK_3] = KC_3;
x11.keyMap[XK_4] = KC_4;
x11.keyMap[XK_5] = KC_5;
x11.keyMap[XK_6] = KC_6;
x11.keyMap[XK_7] = KC_7;
x11.keyMap[XK_8] = KC_8;
x11.keyMap[XK_9] = KC_9;
x11.keyMap[XK_0] = KC_0;
x11.keyMap[XK_BackSpace] = KC_BACK;
x11.keyMap[XK_minus] = KC_MINUS;
x11.keyMap[XK_equal] = KC_EQUALS;
x11.keyMap[XK_space] = KC_SPACE;
x11.keyMap[XK_comma] = KC_COMMA;
x11.keyMap[XK_period] = KC_PERIOD;
x11.keyMap[XK_backslash] = KC_BACKSLASH;
x11.keyMap[XK_slash] = KC_SLASH;
x11.keyMap[XK_bracketleft] = KC_LBRACKET;
x11.keyMap[XK_bracketright] = KC_RBRACKET;
x11.keyMap[XK_Escape] = KC_ESCAPE;
x11.keyMap[XK_Caps_Lock] = KC_CAPITAL;
x11.keyMap[XK_Tab] = KC_TAB;
x11.keyMap[XK_Return] = KC_RETURN;
x11.keyMap[XK_Control_L] = KC_LCONTROL;
x11.keyMap[XK_Control_R] = KC_RCONTROL;
x11.keyMap[XK_colon] = KC_COLON;
x11.keyMap[XK_semicolon] = KC_SEMICOLON;
x11.keyMap[XK_apostrophe] = KC_APOSTROPHE;
x11.keyMap[XK_grave] = KC_GRAVE;
x11.keyMap[XK_b] = KC_B;
x11.keyMap[XK_a] = KC_A;
x11.keyMap[XK_c] = KC_C;
x11.keyMap[XK_d] = KC_D;
x11.keyMap[XK_e] = KC_E;
x11.keyMap[XK_f] = KC_F;
x11.keyMap[XK_g] = KC_G;
x11.keyMap[XK_h] = KC_H;
x11.keyMap[XK_i] = KC_I;
x11.keyMap[XK_j] = KC_J;
x11.keyMap[XK_k] = KC_K;
x11.keyMap[XK_l] = KC_L;
x11.keyMap[XK_m] = KC_M;
x11.keyMap[XK_n] = KC_N;
x11.keyMap[XK_o] = KC_O;
x11.keyMap[XK_p] = KC_P;
x11.keyMap[XK_q] = KC_Q;
x11.keyMap[XK_r] = KC_R;
x11.keyMap[XK_s] = KC_S;
x11.keyMap[XK_t] = KC_T;
x11.keyMap[XK_u] = KC_U;
x11.keyMap[XK_v] = KC_V;
x11.keyMap[XK_w] = KC_W;
x11.keyMap[XK_x] = KC_X;
x11.keyMap[XK_y] = KC_Y;
x11.keyMap[XK_z] = KC_Z;
x11.keyMap[XK_F1] = KC_F1;
x11.keyMap[XK_F2] = KC_F2;
x11.keyMap[XK_F3] = KC_F3;
x11.keyMap[XK_F4] = KC_F4;
x11.keyMap[XK_F5] = KC_F5;
x11.keyMap[XK_F6] = KC_F6;
x11.keyMap[XK_F7] = KC_F7;
x11.keyMap[XK_F8] = KC_F8;
x11.keyMap[XK_F9] = KC_F9;
x11.keyMap[XK_F10] = KC_F10;
x11.keyMap[XK_F11] = KC_F11;
x11.keyMap[XK_F12] = KC_F12;
x11.keyMap[XK_F13] = KC_F13;
x11.keyMap[XK_F14] = KC_F14;
x11.keyMap[XK_F15] = KC_F15;
// keypad
x11.keyMap[XK_KP_0] = KC_NUMPAD0;
x11.keyMap[XK_KP_1] = KC_NUMPAD1;
x11.keyMap[XK_KP_2] = KC_NUMPAD2;
x11.keyMap[XK_KP_3] = KC_NUMPAD3;
x11.keyMap[XK_KP_4] = KC_NUMPAD4;
x11.keyMap[XK_KP_5] = KC_NUMPAD5;
x11.keyMap[XK_KP_6] = KC_NUMPAD6;
x11.keyMap[XK_KP_7] = KC_NUMPAD7;
x11.keyMap[XK_KP_8] = KC_NUMPAD8;
x11.keyMap[XK_KP_9] = KC_NUMPAD9;
x11.keyMap[XK_KP_Add] = KC_ADD;
x11.keyMap[XK_KP_Subtract] = KC_SUBTRACT;
x11.keyMap[XK_KP_Decimal] = KC_DECIMAL;
x11.keyMap[XK_KP_Equal] = KC_NUMPADEQUALS;
x11.keyMap[XK_KP_Divide] = KC_DIVIDE;
x11.keyMap[XK_KP_Multiply] = KC_MULTIPLY;
x11.keyMap[XK_KP_Enter] = KC_NUMPADENTER;
// keypad with numlock off
x11.keyMap[XK_KP_Home] = KC_NUMPAD7;
x11.keyMap[XK_KP_Up] = KC_NUMPAD8;
x11.keyMap[XK_KP_Page_Up] = KC_NUMPAD9;
x11.keyMap[XK_KP_Left] = KC_NUMPAD4;
x11.keyMap[XK_KP_Begin] = KC_NUMPAD5;
x11.keyMap[XK_KP_Right] = KC_NUMPAD6;
x11.keyMap[XK_KP_End] = KC_NUMPAD1;
x11.keyMap[XK_KP_Down] = KC_NUMPAD2;
x11.keyMap[XK_KP_Page_Down] = KC_NUMPAD3;
x11.keyMap[XK_KP_Insert] = KC_NUMPAD0;
x11.keyMap[XK_KP_Delete] = KC_DECIMAL;
x11.keyMap[XK_Up] = KC_UP;
x11.keyMap[XK_Down] = KC_DOWN;
x11.keyMap[XK_Left] = KC_LEFT;
x11.keyMap[XK_Right] = KC_RIGHT;
x11.keyMap[XK_Page_Up] = KC_PGUP;
x11.keyMap[XK_Page_Down] = KC_PGDOWN;
x11.keyMap[XK_Home] = KC_HOME;
x11.keyMap[XK_End] = KC_END;
x11.keyMap[XK_Num_Lock] = KC_NUMLOCK;
x11.keyMap[XK_Print] = KC_SYSRQ;
x11.keyMap[XK_Scroll_Lock] = KC_SCROLL;
x11.keyMap[XK_Pause] = KC_PAUSE;
x11.keyMap[XK_Shift_R] = KC_RSHIFT;
x11.keyMap[XK_Shift_L] = KC_LSHIFT;
x11.keyMap[XK_Alt_R] = KC_RALT;
x11.keyMap[XK_Alt_L] = KC_LALT;
x11.keyMap[XK_Insert] = KC_INSERT;
x11.keyMap[XK_Delete] = KC_DELETE;
x11.keyMap[XK_Super_L] = KC_LWIN;
x11.keyMap[XK_Super_R] = KC_RWIN;
x11.keyMap[XK_Menu] = KC_APPS;
// try to set a latin1 locales otherwise fallback to standard C locale
static char locales[][32] = { "en_US.iso88591", "iso88591", "en_US", "C" };
for(int i=0;i<4;++i) {
if(setlocale(LC_ALL, locales[i]))
break;
}
// open display
x11.display = XOpenDisplay(0);
if(!x11.display)
fatal("Failed to open X display");
// check if GLX is supported on this display
if(!glXQueryExtension(x11.display, 0, 0))
fatal("GLX not supported");
// retrieve GLX version
int glxMajor;
int glxMinor;
if(!glXQueryVersion(x11.display, &glxMajor, &glxMinor))
fatal("Unable to query GLX version");
notice("GLX version %d.%d", glxMajor, glxMinor);
// clipboard related atoms
x11.atomClipboard = XInternAtom(x11.display, "CLIPBOARD", False);
x11.atomTargets = XInternAtom(x11.display, "TARGETS", False);
x11.atomUTF8String = XInternAtom(x11.display, "UTF8_STRING", False);
x11.atomText = XInternAtom(x11.display, "TEXT", False);
x11.atomCompoundText = XInternAtom(x11.display, "COMPOUND_TEXT", False);
}
void Platform::terminate()
{
if(x11.window) {
destroyWindow();
x11.window = None;
}
// close display
if(x11.display) {
XCloseDisplay(x11.display);
x11.display = NULL;
}
}
void Platform::poll()
{
XEvent event, peekevent;
static InputEvent inputEvent;
while(XPending(x11.display) > 0) {
XNextEvent(x11.display, &event);
// call filter because xim will discard KeyPress events when keys still composing
if(XFilterEvent(&event, x11.window))
continue;
// discard events of repeated key releases
if(event.type == KeyRelease && XPending(x11.display)) {
XPeekEvent(x11.display, &peekevent);
if((peekevent.type == KeyPress) &&
(peekevent.xkey.keycode == event.xkey.keycode) &&
((peekevent.xkey.time-event.xkey.time) < 2))
continue;
}
switch(event.type) {
case ConfigureNotify:
// window resize
if(x11.width != event.xconfigure.width || x11.height != event.xconfigure.height) {
x11.width = event.xconfigure.width;
x11.height = event.xconfigure.height;
g_engine.onResize(x11.width, x11.height);
}
break;
case KeyPress:
case KeyRelease: {
KeySym keysym;
char buf[32];
int len;
inputEvent.key.ctrl = (event.xkey.state & ControlMask);
inputEvent.key.shift = (event.xkey.state & ShiftMask);
inputEvent.key.alt = (event.xkey.state & Mod1Mask);
// fire enter text event
if(event.type == KeyPress && !inputEvent.key.ctrl && !inputEvent.key.alt) {
if(x11.xic) { // with xim we can get latin1 input correctly
Status status;
len = XmbLookupString(x11.xic, &event.xkey, buf, sizeof(buf), &keysym, &status);
} else { // otherwise use XLookupString, but it doesn't work right with dead keys often
static XComposeStatus compose = {NULL, 0};
len = XLookupString(&event.xkey, buf, sizeof(buf), &keysym, &compose);
}
if(len > 0 &&
// for some reason these keys produces characters and we don't want that
keysym != XK_BackSpace &&
keysym != XK_Return &&
keysym != XK_Delete &&
keysym != XK_Escape
) {
//debug("char: %c code: %d", buf[0], (unsigned char)buf[0]);
inputEvent.type = EV_TEXT_ENTER;
inputEvent.key.keychar = buf[0];
inputEvent.key.keycode = KC_UNKNOWN;
g_engine.onInputEvent(&inputEvent);
}
}
// unmask Shift/Lock to get expected results
event.xkey.state &= ~(ShiftMask | LockMask);
len = XLookupString(&event.xkey, buf, sizeof(buf), &keysym, 0);
// fire key up/down event
if(x11.keyMap.find(keysym) != x11.keyMap.end()) {
inputEvent.key.keycode = x11.keyMap[keysym];
inputEvent.type = (event.type == KeyPress) ? EV_KEY_DOWN : EV_KEY_UP;
inputEvent.key.keychar = (len > 0) ? buf[0] : 0;
g_engine.onInputEvent(&inputEvent);
}
break;
}
case ButtonPress:
case ButtonRelease:
switch(event.xbutton.button) {
case Button1:
inputEvent.type = (event.type == ButtonPress) ? EV_MOUSE_LDOWN : EV_MOUSE_LUP;
break;
case Button3:
inputEvent.type = (event.type == ButtonPress) ? EV_MOUSE_RDOWN : EV_MOUSE_RUP;
break;
case Button2:
inputEvent.type = (event.type == ButtonPress) ? EV_MOUSE_MDOWN : EV_MOUSE_MUP;
break;
case Button4:
inputEvent.type = EV_MOUSE_WHEEL_UP;
break;
case Button5:
inputEvent.type = EV_MOUSE_WHEEL_DOWN;
break;
}
g_engine.onInputEvent(&inputEvent);
break;
case MotionNotify:
inputEvent.type = EV_MOUSE_MOVE;
inputEvent.mouse.x = event.xbutton.x;
inputEvent.mouse.y = event.xbutton.y;
g_engine.onInputEvent(&inputEvent);
break;
case MapNotify:
x11.visible = true;
break;
case UnmapNotify:
x11.visible = false;
break;
case FocusIn:
x11.focused = true;
break;
case FocusOut:
x11.focused = false;
break;
// clipboard data request
case SelectionRequest:
{
XEvent respond;
XSelectionRequestEvent *req = &(event.xselectionrequest);
if(req->target == x11.atomTargets ) {
Atom typeList[] = {x11.atomText, x11.atomCompoundText, x11.atomUTF8String, XA_STRING};
XChangeProperty(x11.display, req->requestor,
req->property, req->target,
8, PropModeReplace,
(unsigned char *) &typeList,
sizeof(typeList));
respond.xselection.property = req->property;
} else {
XChangeProperty(x11.display,
req->requestor,
req->property, req->target,
8,
PropModeReplace,
(unsigned char*) x11.clipboardText.c_str(),
x11.clipboardText.size());
respond.xselection.property = req->property;
}
respond.xselection.type = SelectionNotify;
respond.xselection.display = req->display;
respond.xselection.requestor = req->requestor;
respond.xselection.selection = req->selection;
respond.xselection.target = req->target;
respond.xselection.time = req->time;
XSendEvent(x11.display, req->requestor, 0, 0, &respond);
XFlush(x11.display);
break;
}
case ClientMessage:
{
if((Atom)event.xclient.data.l[0] == x11.atomDeleteWindow)
g_engine.onClose();
break;
}
}
}
}
unsigned long Platform::getTicks()
{
static timeval tv;
static unsigned long firstTick = 0;
gettimeofday(&tv, 0);
if(!firstTick)
firstTick = tv.tv_sec;
return ((tv.tv_sec - firstTick) * 1000) + (tv.tv_usec / 1000);
}
void Platform::sleep(unsigned long miliseconds)
{
timespec tv;
tv.tv_sec = miliseconds / 1000;
tv.tv_nsec = (miliseconds % 1000) * 1000000;
nanosleep(&tv, NULL);
}
bool Platform::createWindow(int width, int height, int minWidth, int minHeight)
{
static int attrList[] = {
GLX_USE_GL,
GLX_RGBA,
GLX_DOUBLEBUFFER,
None
};
// choose OpenGL, RGBA, double buffered, visual
x11.visual = glXChooseVisual(x11.display, DefaultScreen(x11.display), attrList);
if(!x11.visual)
fatal("RGBA/Double buffered visual not supported");
// create GLX context
x11.glxContext = glXCreateContext(x11.display, x11.visual, 0, GL_TRUE);
if(!x11.glxContext)
fatal("Unable to create GLX context");
// color map
x11.colormap = XCreateColormap(x11.display,
RootWindow(x11.display, x11.visual->screen),
x11.visual->visual,
AllocNone);
// setup window attributes
XSetWindowAttributes wa;
wa.colormap = x11.colormap;
wa.border_pixel = 0;
wa.event_mask = KeyPressMask | KeyReleaseMask |
ButtonPressMask | ButtonReleaseMask | PointerMotionMask |
ExposureMask | VisibilityChangeMask |
StructureNotifyMask | FocusChangeMask;
// calculate center position
int x = (XDisplayHeight(x11.display, DefaultScreen(x11.display)) - width) / 2;
int y = (XDisplayHeight(x11.display, DefaultScreen(x11.display)) - height) / 2;
// create the window
x11.window = XCreateWindow(x11.display,
RootWindow(x11.display, x11.visual->screen),
x, y,
width, height,
0,
x11.visual->depth,
InputOutput,
x11.visual->visual,
CWBorderPixel | CWColormap | CWEventMask,
&wa);
if(!x11.window)
fatal("Unable to create X window");
// create input context (to have better key input handling)
if(XSupportsLocale()) {
XSetLocaleModifiers("");
x11.xim = XOpenIM(x11.display, NULL, NULL, NULL);
if(x11.xim) {
x11.xic = XCreateIC(x11.xim,
XNInputStyle,
XIMPreeditNothing | XIMStatusNothing,
XNClientWindow, x11.window, NULL);
if(!x11.xic)
error("Unable to create the input context");
} else
error("Failed to open an input method");
} else
error("X11 does not support the current locale");
if(!x11.xic)
warning("Input of special keys maybe messed up because we couldn't create an input context");
// set window minimum size
XSizeHints xsizehints;
xsizehints.flags = PMinSize;
xsizehints.min_width = minWidth;
xsizehints.min_height= minHeight;
XSetWMSizeHints(x11.display, x11.window, &xsizehints, XA_WM_NORMAL_HINTS);
// handle delete window event
x11.atomDeleteWindow = XInternAtom(x11.display, "WM_DELETE_WINDOW", True);
XSetWMProtocols(x11.display, x11.window, &x11.atomDeleteWindow , 1);
// connect the GLX-context to the window
glXMakeCurrent(x11.display, x11.window, x11.glxContext);
x11.width = width;
x11.height = height;
return true;
}
void Platform::destroyWindow()
{
if(x11.glxContext) {
glXMakeCurrent(x11.display, None, NULL);
glXDestroyContext(x11.display, x11.glxContext);
x11.glxContext = NULL;
}
if(x11.visual) {
XFree(x11.visual);
x11.visual = NULL;
}
if(x11.colormap != None) {
XFreeColormap(x11.display, x11.colormap);
x11.colormap = 0;
}
if(x11.window != None) {
XUnmapWindow(x11.display, x11.window);
XDestroyWindow(x11.display, x11.window);
x11.window = None;
}
if(x11.xic) {
XDestroyIC(x11.xic);
x11.xic = NULL;
}
if(x11.xim) {
XCloseIM(x11.xim);
x11.xim = NULL;
}
}
void Platform::showWindow()
{
XMapWindow(x11.display, x11.window);
}
void Platform::setWindowTitle(const char *title)
{
XStoreName(x11.display, x11.window, title);
XSetIconName(x11.display, x11.window, title);
}
void *Platform::getExtensionProcAddress(const char *ext)
{
return (void*)glXGetProcAddressARB((const GLubyte*)ext);
}
bool Platform::isExtensionSupported(const char *ext)
{
const char *exts = glXQueryExtensionsString(x11.display, DefaultScreen(x11.display));
if(strstr(exts, ext))
return true;
return true;
}
const char *Platform::getTextFromClipboard()
{
Window ownerWindow = XGetSelectionOwner(x11.display, x11.atomClipboard);
if(ownerWindow == x11.window)
return x11.clipboardText.c_str();
std::string clipboard = "";
if(ownerWindow != None) {
XConvertSelection(x11.display, x11.atomClipboard, XA_STRING, 0, ownerWindow, CurrentTime);
XFlush(x11.display);
// hack to wait SelectioNotify event, otherwise we will get wrong clipboard pastes
sleep(100);
// check for data
Atom type;
int format;
unsigned long numItems, bytesLeft, dummy;
unsigned char *data;
XGetWindowProperty(x11.display, ownerWindow,
XA_STRING,
0, 0, 0,
AnyPropertyType,
&type,
&format,
&numItems,
&bytesLeft,
&data);
if(bytesLeft > 0) {
// get the data get
int result = XGetWindowProperty(x11.display, ownerWindow,
XA_STRING,
0,
bytesLeft,
0,
AnyPropertyType,
&type,
&format,
&numItems,
&dummy,
&data);
if(result == Success)
clipboard = (const char*)data;
XFree(data);
}
}
return clipboard.c_str();
}
void Platform::copyToClipboard(const char *text)
{
x11.clipboardText = text;
XSetSelectionOwner(x11.display, x11.atomClipboard, x11.window, CurrentTime);
XFlush(x11.display);
}
void Platform::hideMouseCursor()
{
if(x11.cursor == None) {
char bm[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
Pixmap pix = XCreateBitmapFromData(x11.display, x11.window, bm, 8, 8);
XColor black;
memset(&black, 0, sizeof(XColor));
black.flags = DoRed | DoGreen | DoBlue;
x11.cursor = XCreatePixmapCursor(x11.display, pix, pix, &black, &black, 0, 0);
XFreePixmap(x11.display, pix);
}
XDefineCursor(x11.display, x11.window, x11.cursor);
}
void Platform::showMouseCursor()
{
XUndefineCursor(x11.display, x11.window);
if(x11.cursor != None) {
XFreeCursor(x11.display, x11.cursor);
x11.cursor = None;
}
}
void Platform::setVsync(bool enable)
{
typedef GLint (*glSwapIntervalProc)(GLint);
glSwapIntervalProc glSwapInterval = NULL;
if(isExtensionSupported("GLX_MESA_swap_control"))
glSwapInterval = (glSwapIntervalProc)getExtensionProcAddress("glXSwapIntervalMESA");
else if(isExtensionSupported("GLX_SGI_swap_control"))
glSwapInterval = (glSwapIntervalProc)getExtensionProcAddress("glXSwapIntervalSGI");
if(glSwapInterval)
glSwapInterval(enable ? 1 : 0);
}
void Platform::swapBuffers()
{
glXSwapBuffers(x11.display, x11.window);
}
bool Platform::isWindowFocused()
{
return x11.focused;
}
bool Platform::isWindowVisible()
{
return x11.visible;
}