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panda3d/panda/src/tinydisplay/tinyXGraphicsWindow.cxx
David Rose 0f634524be X zoom window
2009-02-24 00:49:22 +00:00

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// Filename: tinyXGraphicsWindow.cxx
// Created by: drose (03May08)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
#include "pandabase.h"
#ifdef HAVE_X11
#include "tinyXGraphicsWindow.h"
#include "tinyGraphicsStateGuardian.h"
#include "tinyXGraphicsPipe.h"
#include "config_tinydisplay.h"
#include "graphicsPipe.h"
#include "keyboardButton.h"
#include "mouseButton.h"
#include "clockObject.h"
#include "pStatTimer.h"
#include "textEncoder.h"
#include "throw_event.h"
#include "lightReMutexHolder.h"
#include <errno.h>
#include <sys/time.h>
#include <X11/keysym.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#ifdef HAVE_LINUX_INPUT_H
#include <linux/input.h>
#endif
TypeHandle TinyXGraphicsWindow::_type_handle;
#define test_bit(bit, array) ((array)[(bit)/8] & (1<<((bit)&7)))
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::Constructor
// Access: Public
// Description:
////////////////////////////////////////////////////////////////////
TinyXGraphicsWindow::
TinyXGraphicsWindow(GraphicsPipe *pipe,
const string &name,
const FrameBufferProperties &fb_prop,
const WindowProperties &win_prop,
int flags,
GraphicsStateGuardian *gsg,
GraphicsOutput *host) :
GraphicsWindow(pipe, name, fb_prop, win_prop, flags, gsg, host)
{
TinyXGraphicsPipe *tinyx_pipe;
DCAST_INTO_V(tinyx_pipe, _pipe);
_display = tinyx_pipe->get_display();
_screen = tinyx_pipe->get_screen();
_xwindow = (Window)NULL;
_gc = (GC)NULL;
_ic = (XIC)NULL;
_awaiting_configure = false;
_wm_delete_window = tinyx_pipe->_wm_delete_window;
_net_wm_window_type = tinyx_pipe->_net_wm_window_type;
_net_wm_window_type_splash = tinyx_pipe->_net_wm_window_type_splash;
_net_wm_window_type_fullscreen = tinyx_pipe->_net_wm_window_type_fullscreen;
_net_wm_state = tinyx_pipe->_net_wm_state;
_net_wm_state_fullscreen = tinyx_pipe->_net_wm_state_fullscreen;
_net_wm_state_above = tinyx_pipe->_net_wm_state_above;
_net_wm_state_below = tinyx_pipe->_net_wm_state_below;
_net_wm_state_add = tinyx_pipe->_net_wm_state_add;
_net_wm_state_remove = tinyx_pipe->_net_wm_state_remove;
_reduced_frame_buffer = NULL;
_full_frame_buffer = NULL;
_ximage = NULL;
update_pixel_factor();
GraphicsWindowInputDevice device =
GraphicsWindowInputDevice::pointer_and_keyboard(this, "keyboard_mouse");
add_input_device(device);
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::Destructor
// Access: Public, Virtual
// Description:
////////////////////////////////////////////////////////////////////
TinyXGraphicsWindow::
~TinyXGraphicsWindow() {
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::move_pointer
// Access: Published, Virtual
// Description: Forces the pointer to the indicated position within
// the window, if possible.
//
// Returns true if successful, false on failure. This
// may fail if the mouse is not currently within the
// window, or if the API doesn't support this operation.
////////////////////////////////////////////////////////////////////
bool TinyXGraphicsWindow::
move_pointer(int device, int x, int y) {
// Note: this is not thread-safe; it should be called only from App.
// Probably not an issue.
if (device == 0) {
// Move the system mouse pointer.
if (!_properties.get_foreground() ||
!_input_devices[0].get_pointer().get_in_window()) {
// If the window doesn't have input focus, or the mouse isn't
// currently within the window, forget it.
return false;
}
XWarpPointer(_display, None, _xwindow, 0, 0, 0, 0, x, y);
_input_devices[0].set_pointer_in_window(x, y);
return true;
} else {
// Move a raw mouse.
if ((device < 1)||(device >= _input_devices.size())) {
return false;
}
_input_devices[device].set_pointer_in_window(x, y);
return true;
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::begin_frame
// Access: Public, Virtual
// Description: This function will be called within the draw thread
// before beginning rendering for a given frame. It
// should do whatever setup is required, and return true
// if the frame should be rendered, or false if it
// should be skipped.
////////////////////////////////////////////////////////////////////
bool TinyXGraphicsWindow::
begin_frame(FrameMode mode, Thread *current_thread) {
PStatTimer timer(_make_current_pcollector, current_thread);
begin_frame_spam(mode);
if (_gsg == (GraphicsStateGuardian *)NULL) {
return false;
}
if (_awaiting_configure) {
// Don't attempt to draw while we have just reconfigured the
// window and we haven't got the notification back yet.
return false;
}
TinyGraphicsStateGuardian *tinygsg;
DCAST_INTO_R(tinygsg, _gsg, false);
if (_reduced_frame_buffer != (ZBuffer *)NULL) {
tinygsg->_current_frame_buffer = _reduced_frame_buffer;
} else {
tinygsg->_current_frame_buffer = _full_frame_buffer;
}
tinygsg->reset_if_new();
_gsg->set_current_properties(&get_fb_properties());
return _gsg->begin_frame(current_thread);
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::end_frame
// Access: Public, Virtual
// Description: This function will be called within the draw thread
// after rendering is completed for a given frame. It
// should do whatever finalization is required.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
end_frame(FrameMode mode, Thread *current_thread) {
end_frame_spam(mode);
nassertv(_gsg != (GraphicsStateGuardian *)NULL);
if (mode == FM_render) {
// end_render_texture();
copy_to_textures();
}
_gsg->end_frame(current_thread);
if (mode == FM_render) {
trigger_flip();
if (_one_shot) {
prepare_for_deletion();
}
clear_cube_map_selection();
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::begin_flip
// Access: Public, Virtual
// Description: This function will be called within the draw thread
// after end_frame() has been called on all windows, to
// initiate the exchange of the front and back buffers.
//
// This should instruct the window to prepare for the
// flip at the next video sync, but it should not wait.
//
// We have the two separate functions, begin_flip() and
// end_flip(), to make it easier to flip all of the
// windows at the same time.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
begin_flip() {
if (_reduced_frame_buffer != (ZBuffer *)NULL) {
// Zoom the reduced buffer onto the full buffer.
ZB_zoomFrameBuffer(_full_frame_buffer, 0, 0,
_full_frame_buffer->xsize, _full_frame_buffer->ysize,
_reduced_frame_buffer, 0, 0,
_reduced_frame_buffer->xsize, _reduced_frame_buffer->ysize);
}
if (_bytes_per_pixel == 4 && _pitch == _full_frame_buffer->linesize) {
// If we match the expected bpp, we don't need an intervening copy
// operation. Just point the XImage directly at the framebuffer
// data.
_ximage->data = (char *)_full_frame_buffer->pbuf;
} else {
ZB_copyFrameBuffer(_full_frame_buffer, _ximage->data, _pitch);
}
XPutImage(_display, _xwindow, _gc, _ximage, 0, 0, 0, 0,
_full_frame_buffer->xsize, _full_frame_buffer->ysize);
XFlush(_display);
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::supports_pixel_zoom
// Access: Published, Virtual
// Description: Returns true if a call to set_pixel_zoom() will be
// respected, false if it will be ignored. If this
// returns false, then get_pixel_factor() will always
// return 1.0, regardless of what value you specify for
// set_pixel_zoom().
//
// This may return false if the underlying renderer
// doesn't support pixel zooming, or if you have called
// this on a DisplayRegion that doesn't have both
// set_clear_color() and set_clear_depth() enabled.
////////////////////////////////////////////////////////////////////
bool TinyXGraphicsWindow::
supports_pixel_zoom() const {
return true;
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::process_events
// Access: Public, Virtual
// Description: Do whatever processing is necessary to ensure that
// the window responds to user events. Also, honor any
// requests recently made via request_properties()
//
// This function is called only within the window
// thread.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
process_events() {
LightReMutexHolder holder(TinyXGraphicsPipe::_x_mutex);
GraphicsWindow::process_events();
if (_xwindow == (Window)0) {
return;
}
poll_raw_mice();
XEvent event;
XKeyEvent keyrelease_event;
bool got_keyrelease_event = false;
while (XCheckIfEvent(_display, &event, check_event, (char *)this)) {
if (XFilterEvent(&event, None)) {
continue;
}
if (got_keyrelease_event) {
// If a keyrelease event is immediately followed by a matching
// keypress event, that's just key repeat and we should treat
// the two events accordingly. It would be nice if X provided a
// way to differentiate between keyrepeat and explicit
// keypresses more generally.
got_keyrelease_event = false;
if (event.type == KeyPress &&
event.xkey.keycode == keyrelease_event.keycode &&
(event.xkey.time - keyrelease_event.time <= 1)) {
// In particular, we only generate down messages for the
// repeated keys, not down-and-up messages.
handle_keystroke(event.xkey);
// We thought about not generating the keypress event, but we
// need that repeat for backspace. Rethink later.
handle_keypress(event.xkey);
continue;
} else {
// This keyrelease event is not immediately followed by a
// matching keypress event, so it's a genuine release.
handle_keyrelease(keyrelease_event);
}
}
WindowProperties properties;
ButtonHandle button;
switch (event.type) {
case ReparentNotify:
break;
case ConfigureNotify:
_awaiting_configure = false;
if (_properties.get_fixed_size()) {
// If the window properties indicate a fixed size only, undo
// any attempt by the user to change them. In X, there
// doesn't appear to be a way to universally disallow this
// directly (although we do set the min_size and max_size to
// the same value, which seems to work for most window
// managers.)
WindowProperties current_props = get_properties();
if (event.xconfigure.width != current_props.get_x_size() ||
event.xconfigure.height != current_props.get_y_size()) {
XWindowChanges changes;
changes.width = current_props.get_x_size();
changes.height = current_props.get_y_size();
int value_mask = (CWWidth | CWHeight);
XConfigureWindow(_display, _xwindow, value_mask, &changes);
}
} else {
// A normal window may be resized by the user at will.
properties.set_size(event.xconfigure.width, event.xconfigure.height);
system_changed_properties(properties);
ZB_resize(_full_frame_buffer, NULL, _properties.get_x_size(), _properties.get_y_size());
_pitch = (_full_frame_buffer->xsize * _bytes_per_pixel + 3) & ~3;
create_reduced_frame_buffer();
create_ximage();
}
break;
case ButtonPress:
// This refers to the mouse buttons.
button = get_mouse_button(event.xbutton);
_input_devices[0].set_pointer_in_window(event.xbutton.x, event.xbutton.y);
_input_devices[0].button_down(button);
break;
case ButtonRelease:
button = get_mouse_button(event.xbutton);
_input_devices[0].set_pointer_in_window(event.xbutton.x, event.xbutton.y);
_input_devices[0].button_up(button);
break;
case MotionNotify:
_input_devices[0].set_pointer_in_window(event.xmotion.x, event.xmotion.y);
break;
case KeyPress:
handle_keystroke(event.xkey);
handle_keypress(event.xkey);
break;
case KeyRelease:
// The KeyRelease can't be processed immediately, because we
// have to check first if it's immediately followed by a
// matching KeyPress event.
keyrelease_event = event.xkey;
got_keyrelease_event = true;
break;
case EnterNotify:
_input_devices[0].set_pointer_in_window(event.xcrossing.x, event.xcrossing.y);
break;
case LeaveNotify:
_input_devices[0].set_pointer_out_of_window();
break;
case FocusIn:
properties.set_foreground(true);
system_changed_properties(properties);
break;
case FocusOut:
properties.set_foreground(false);
system_changed_properties(properties);
break;
case UnmapNotify:
properties.set_minimized(true);
system_changed_properties(properties);
break;
case MapNotify:
properties.set_minimized(false);
system_changed_properties(properties);
// Auto-focus the window when it is mapped.
XSetInputFocus(_display, _xwindow, RevertToPointerRoot, CurrentTime);
break;
case ClientMessage:
if ((Atom)(event.xclient.data.l[0]) == _wm_delete_window) {
// This is a message from the window manager indicating that
// the user has requested to close the window.
string close_request_event = get_close_request_event();
if (!close_request_event.empty()) {
// In this case, the app has indicated a desire to intercept
// the request and process it directly.
throw_event(close_request_event);
} else {
// In this case, the default case, the app does not intend
// to service the request, so we do by closing the window.
// TODO: don't release the gsg in the window thread.
close_window();
properties.set_open(false);
system_changed_properties(properties);
}
}
break;
case DestroyNotify:
// Apparently, we never get a DestroyNotify on a toplevel
// window. Instead, we rely on hints from the window manager
// (see above).
tinydisplay_cat.info()
<< "DestroyNotify\n";
break;
default:
tinydisplay_cat.error()
<< "unhandled X event type " << event.type << "\n";
}
}
if (got_keyrelease_event) {
// This keyrelease event is not immediately followed by a
// matching keypress event, so it's a genuine release.
handle_keyrelease(keyrelease_event);
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::set_properties_now
// Access: Public, Virtual
// Description: Applies the requested set of properties to the
// window, if possible, for instance to request a change
// in size or minimization status.
//
// The window properties are applied immediately, rather
// than waiting until the next frame. This implies that
// this method may *only* be called from within the
// window thread.
//
// The return value is true if the properties are set,
// false if they are ignored. This is mainly useful for
// derived classes to implement extensions to this
// function.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
set_properties_now(WindowProperties &properties) {
if (_pipe == (GraphicsPipe *)NULL) {
// If the pipe is null, we're probably closing down.
GraphicsWindow::set_properties_now(properties);
return;
}
TinyXGraphicsPipe *tinyx_pipe;
DCAST_INTO_V(tinyx_pipe, _pipe);
// Fullscreen mode is implemented with a hint to the window manager.
// However, we also implicitly set the origin to (0, 0) and the size
// to the desktop size, and request undecorated mode, in case the
// user has a less-capable window manager (or no window manager at
// all).
if (properties.get_fullscreen()) {
properties.set_undecorated(true);
properties.set_origin(0, 0);
properties.set_size(tinyx_pipe->get_display_width(),
tinyx_pipe->get_display_height());
}
GraphicsWindow::set_properties_now(properties);
if (!properties.is_any_specified()) {
// The base class has already handled this case.
return;
}
// The window is already open; we are limited to what we can change
// on the fly.
// We'll pass some property requests on as a window manager hint.
WindowProperties wm_properties = _properties;
wm_properties.add_properties(properties);
// The window title may be changed by issuing another hint request.
// Assume this will be honored.
if (properties.has_title()) {
_properties.set_title(properties.get_title());
properties.clear_title();
}
// Ditto for fullscreen mode.
if (properties.has_fullscreen()) {
_properties.set_fullscreen(properties.get_fullscreen());
properties.clear_fullscreen();
}
// The size and position of an already-open window are changed via
// explicit X calls. These may still get intercepted by the window
// manager. Rather than changing _properties immediately, we'll
// wait for the ConfigureNotify message to come back.
XWindowChanges changes;
int value_mask = 0;
if (properties.has_origin()) {
changes.x = properties.get_x_origin();
changes.y = properties.get_y_origin();
value_mask |= (CWX | CWY);
properties.clear_origin();
}
if (properties.has_size()) {
changes.width = properties.get_x_size();
changes.height = properties.get_y_size();
value_mask |= (CWWidth | CWHeight);
properties.clear_size();
}
if (properties.has_z_order()) {
// We'll send the classic stacking request through the standard
// interface, for users of primitive window managers; but we'll
// also send it as a window manager hint, for users of modern
// window managers.
_properties.set_z_order(properties.get_z_order());
switch (properties.get_z_order()) {
case WindowProperties::Z_bottom:
changes.stack_mode = Below;
break;
case WindowProperties::Z_normal:
changes.stack_mode = TopIf;
break;
case WindowProperties::Z_top:
changes.stack_mode = Above;
break;
}
value_mask |= (CWStackMode);
properties.clear_z_order();
}
if (value_mask != 0) {
XReconfigureWMWindow(_display, _xwindow, _screen, value_mask, &changes);
// Don't draw anything until this is done reconfiguring.
_awaiting_configure = true;
}
// We hide the cursor by setting it to an invisible pixmap.
if (properties.has_cursor_hidden()) {
_properties.set_cursor_hidden(properties.get_cursor_hidden());
if (properties.get_cursor_hidden()) {
XDefineCursor(_display, _xwindow, tinyx_pipe->get_hidden_cursor());
} else {
XDefineCursor(_display, _xwindow, None);
}
properties.clear_cursor_hidden();
}
if (properties.has_foreground()) {
if (properties.get_foreground()) {
XSetInputFocus(_display, _xwindow, RevertToPointerRoot, CurrentTime);
} else {
XSetInputFocus(_display, PointerRoot, RevertToPointerRoot, CurrentTime);
}
properties.clear_foreground();
}
set_wm_properties(wm_properties, true);
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::close_window
// Access: Protected, Virtual
// Description: Closes the window right now. Called from the window
// thread.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
close_window() {
if (_gsg != (GraphicsStateGuardian *)NULL) {
TinyGraphicsStateGuardian *tinygsg;
DCAST_INTO_V(tinygsg, _gsg);
tinygsg->_current_frame_buffer = NULL;
_gsg.clear();
_active = false;
}
if (_ic != (XIC)NULL) {
XDestroyIC(_ic);
_ic = (XIC)NULL;
}
if (_gc != (GC)NULL) {
XFreeGC(_display, _gc);
_gc = (GC)NULL;
}
if (_xwindow != (Window)NULL) {
XDestroyWindow(_display, _xwindow);
_xwindow = (Window)NULL;
// This may be necessary if we just closed the last X window in an
// application, so the server hears the close request.
XFlush(_display);
}
GraphicsWindow::close_window();
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::open_window
// Access: Protected, Virtual
// Description: Opens the window right now. Called from the window
// thread. Returns true if the window is successfully
// opened, or false if there was a problem.
////////////////////////////////////////////////////////////////////
bool TinyXGraphicsWindow::
open_window() {
TinyXGraphicsPipe *tinyx_pipe;
DCAST_INTO_R(tinyx_pipe, _pipe, false);
// GSG Creation/Initialization
TinyGraphicsStateGuardian *tinygsg;
if (_gsg == 0) {
// There is no old gsg. Create a new one.
tinygsg = new TinyGraphicsStateGuardian(_pipe, NULL);
_gsg = tinygsg;
} else {
DCAST_INTO_R(tinygsg, _gsg, false);
}
XVisualInfo vinfo_template;
vinfo_template.screen = _screen;
vinfo_template.depth = 32;
vinfo_template.c_class = TrueColor;
// Try to get each of these properties in turn.
int try_masks[] = {
VisualScreenMask | VisualDepthMask | VisualClassMask,
VisualScreenMask | VisualClassMask,
VisualScreenMask | VisualDepthMask,
VisualScreenMask,
0,
};
int i = 0;
int num_vinfos = 0;
XVisualInfo *vinfo_array;
while (try_masks[i] != 0 && num_vinfos == 0) {
vinfo_array =
XGetVisualInfo(_display, try_masks[i], &vinfo_template, &num_vinfos);
++i;
}
if (num_vinfos == 0) {
// No suitable X visual.
tinydisplay_cat.error()
<< "No suitable X Visual available; cannot open window.\n";
return false;
}
XVisualInfo *visual_info = &vinfo_array[0];
_visual = visual_info->visual;
_depth = visual_info->depth;
_bytes_per_pixel = _depth / 8;
if (_bytes_per_pixel == 3) {
// Seems to be a special case.
_bytes_per_pixel = 4;
}
tinydisplay_cat.info()
<< "Got X Visual with depth " << _depth << " (bpp " << _bytes_per_pixel << ") and class ";
switch (visual_info->c_class) {
case TrueColor:
tinydisplay_cat.info(false) << "TrueColor\n";
break;
case DirectColor:
tinydisplay_cat.info(false) << "DirectColor\n";
break;
case StaticColor:
tinydisplay_cat.info(false) << "StaticColor\n";
break;
case StaticGray:
tinydisplay_cat.info(false) << "StaticGray\n";
break;
case GrayScale:
tinydisplay_cat.info(false) << "GrayScale\n";
break;
case PseudoColor:
tinydisplay_cat.info(false) << "PseudoColor\n";
break;
}
if (!_properties.has_origin()) {
_properties.set_origin(0, 0);
}
if (!_properties.has_size()) {
_properties.set_size(100, 100);
}
Window root_window;
if (!_properties.has_parent_window()) {
root_window = tinyx_pipe->get_root();
} else {
root_window = (Window) (int) _properties.get_parent_window();
}
setup_colormap(visual_info);
_event_mask =
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask |
EnterWindowMask | LeaveWindowMask |
PointerMotionMask |
FocusChangeMask |
StructureNotifyMask;
// Initialize window attributes
XSetWindowAttributes wa;
wa.background_pixel = XBlackPixel(_display, _screen);
wa.border_pixel = 0;
wa.colormap = _colormap;
wa.event_mask = _event_mask;
unsigned long attrib_mask =
CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
_xwindow = XCreateWindow
(_display, root_window,
_properties.get_x_origin(), _properties.get_y_origin(),
_properties.get_x_size(), _properties.get_y_size(),
0, _depth, InputOutput, _visual, attrib_mask, &wa);
if (_xwindow == (Window)0) {
tinydisplay_cat.error()
<< "failed to create X window.\n";
return false;
}
set_wm_properties(_properties, false);
// We don't specify any fancy properties of the XIC. It would be
// nicer if we could support fancy IM's that want preedit callbacks,
// etc., but that can wait until we have an X server that actually
// supports these to test it on.
XIM im = tinyx_pipe->get_im();
_ic = NULL;
if (im) {
_ic = XCreateIC
(im,
XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
NULL);
if (_ic == (XIC)NULL) {
tinydisplay_cat.warning()
<< "Couldn't create input context.\n";
}
}
if (_properties.get_cursor_hidden()) {
XDefineCursor(_display, _xwindow, tinyx_pipe->get_hidden_cursor());
}
_gc = XCreateGC(_display, _xwindow, 0, NULL);
create_full_frame_buffer();
if (_full_frame_buffer == NULL) {
tinydisplay_cat.error()
<< "Could not create frame buffer.\n";
return false;
}
create_reduced_frame_buffer();
create_ximage();
nassertr(_ximage != NULL, false);
tinygsg->_current_frame_buffer = _full_frame_buffer;
tinygsg->reset_if_new();
if (!tinygsg->is_valid()) {
close_window();
return false;
}
XMapWindow(_display, _xwindow);
if (_properties.get_raw_mice()) {
open_raw_mice();
} else {
if (tinydisplay_cat.is_debug()) {
tinydisplay_cat.debug()
<< "Raw mice not requested.\n";
}
}
return true;
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::pixel_factor_changed
// Access: Protected, Virtual
// Description: Called internally when the pixel factor changes.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
pixel_factor_changed() {
GraphicsWindow::pixel_factor_changed();
create_reduced_frame_buffer();
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::set_wm_properties
// Access: Private
// Description: Asks the window manager to set the appropriate
// properties. In X, these properties cannot be
// specified directly by the application; they must be
// requested via the window manager, which may or may
// not choose to honor the request.
//
// If already_mapped is true, the window has already
// been mapped (manifested) on the display. This means
// we may need to use a different action in some cases.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
set_wm_properties(const WindowProperties &properties, bool already_mapped) {
// Name the window if there is a name
XTextProperty window_name;
XTextProperty *window_name_p = (XTextProperty *)NULL;
if (properties.has_title()) {
char *name = (char *)properties.get_title().c_str();
if (XStringListToTextProperty(&name, 1, &window_name) != 0) {
window_name_p = &window_name;
}
}
// The size hints request a window of a particular size and/or a
// particular placement onscreen.
XSizeHints *size_hints_p = NULL;
if (properties.has_origin() || properties.has_size()) {
size_hints_p = XAllocSizeHints();
if (size_hints_p != (XSizeHints *)NULL) {
if (properties.has_origin()) {
size_hints_p->x = properties.get_x_origin();
size_hints_p->y = properties.get_y_origin();
size_hints_p->flags |= USPosition;
}
if (properties.has_size()) {
size_hints_p->width = properties.get_x_size();
size_hints_p->height = properties.get_y_size();
size_hints_p->flags |= USSize;
if (properties.has_fixed_size()) {
size_hints_p->min_width = properties.get_x_size();
size_hints_p->min_height = properties.get_y_size();
size_hints_p->max_width = properties.get_x_size();
size_hints_p->max_height = properties.get_y_size();
size_hints_p->flags |= (PMinSize | PMaxSize);
}
}
}
}
// The window manager hints include requests to the window manager
// other than those specific to window geometry.
XWMHints *wm_hints_p = NULL;
wm_hints_p = XAllocWMHints();
if (wm_hints_p != (XWMHints *)NULL) {
if (properties.has_minimized() && properties.get_minimized()) {
wm_hints_p->initial_state = IconicState;
} else {
wm_hints_p->initial_state = NormalState;
}
wm_hints_p->flags = StateHint;
}
// Two competing window manager interfaces have evolved. One of
// them allows to set certain properties as a "type"; the other one
// as a "state". We'll try to honor both.
static const int max_type_data = 32;
PN_int32 type_data[max_type_data];
int next_type_data = 0;
static const int max_state_data = 32;
PN_int32 state_data[max_state_data];
int next_state_data = 0;
static const int max_set_data = 32;
class SetAction {
public:
inline SetAction() { }
inline SetAction(Atom state, Atom action) : _state(state), _action(action) { }
Atom _state;
Atom _action;
};
SetAction set_data[max_set_data];
int next_set_data = 0;
if (properties.get_fullscreen()) {
// For a "fullscreen" request, we pass this through, hoping the
// window manager will support EWMH.
type_data[next_type_data++] = _net_wm_window_type_fullscreen;
// We also request it as a state.
state_data[next_state_data++] = _net_wm_state_fullscreen;
set_data[next_set_data++] = SetAction(_net_wm_state_fullscreen, _net_wm_state_add);
} else {
set_data[next_set_data++] = SetAction(_net_wm_state_fullscreen, _net_wm_state_remove);
}
// If we asked for a window without a border, there's no excellent
// way to arrange that. For users whose window managers follow the
// EWMH specification, we can ask for a "splash" screen, which is
// usually undecorated. It's not exactly right, but the spec
// doesn't give us an exactly-right option.
// For other users, we'll totally punt and just set the window's
// Class to "Undecorated", and let the user configure his/her window
// manager not to put a border around windows of this class.
XClassHint *class_hints_p = NULL;
if (properties.get_undecorated()) {
class_hints_p = XAllocClassHint();
class_hints_p->res_class = (char *)"Undecorated";
if (!properties.get_fullscreen()) {
type_data[next_type_data++] = _net_wm_window_type_splash;
}
}
if (properties.has_z_order()) {
switch (properties.get_z_order()) {
case WindowProperties::Z_bottom:
state_data[next_state_data++] = _net_wm_state_below;
set_data[next_set_data++] = SetAction(_net_wm_state_below, _net_wm_state_add);
set_data[next_set_data++] = SetAction(_net_wm_state_above, _net_wm_state_remove);
break;
case WindowProperties::Z_normal:
set_data[next_set_data++] = SetAction(_net_wm_state_below, _net_wm_state_remove);
set_data[next_set_data++] = SetAction(_net_wm_state_above, _net_wm_state_remove);
break;
case WindowProperties::Z_top:
state_data[next_state_data++] = _net_wm_state_above;
set_data[next_set_data++] = SetAction(_net_wm_state_below, _net_wm_state_remove);
set_data[next_set_data++] = SetAction(_net_wm_state_above, _net_wm_state_add);
break;
}
}
nassertv(next_type_data < max_type_data);
nassertv(next_state_data < max_state_data);
nassertv(next_set_data < max_set_data);
XChangeProperty(_display, _xwindow, _net_wm_window_type,
XA_ATOM, 32, PropModeReplace,
(unsigned char *)type_data, next_type_data);
// Request the state properties all at once.
XChangeProperty(_display, _xwindow, _net_wm_state,
XA_ATOM, 32, PropModeReplace,
(unsigned char *)state_data, next_state_data);
if (already_mapped) {
// We have to request state changes differently when the window
// has been mapped. To do this, we need to send a client message
// to the root window for each change.
TinyXGraphicsPipe *tinyx_pipe;
DCAST_INTO_V(tinyx_pipe, _pipe);
for (int i = 0; i < next_set_data; ++i) {
XClientMessageEvent event;
memset(&event, 0, sizeof(event));
event.type = ClientMessage;
event.send_event = True;
event.display = _display;
event.window = _xwindow;
event.message_type = _net_wm_state;
event.format = 32;
event.data.l[0] = set_data[i]._action;
event.data.l[1] = set_data[i]._state;
event.data.l[2] = 0;
event.data.l[3] = 1;
XSendEvent(_display, tinyx_pipe->get_root(), True, 0, (XEvent *)&event);
}
}
XSetWMProperties(_display, _xwindow, window_name_p, window_name_p,
NULL, 0, size_hints_p, wm_hints_p, class_hints_p);
if (size_hints_p != (XSizeHints *)NULL) {
XFree(size_hints_p);
}
if (wm_hints_p != (XWMHints *)NULL) {
XFree(wm_hints_p);
}
if (class_hints_p != (XClassHint *)NULL) {
XFree(class_hints_p);
}
// Also, indicate to the window manager that we'd like to get a
// chance to close our windows cleanly, rather than being rudely
// disconnected from the X server if the user requests a window
// close.
Atom protocols[] = {
_wm_delete_window,
};
XSetWMProtocols(_display, _xwindow, protocols,
sizeof(protocols) / sizeof(Atom));
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::setup_colormap
// Access: Private
// Description: Allocates a colormap appropriate to the visual and
// stores in in the _colormap method.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
setup_colormap(XVisualInfo *visual_info) {
TinyXGraphicsPipe *tinyx_pipe;
DCAST_INTO_V(tinyx_pipe, _pipe);
Window root_window = tinyx_pipe->get_root();
int visual_class = visual_info->c_class;
int rc, is_rgb;
switch (visual_class) {
case TrueColor:
case DirectColor:
_colormap = XCreateColormap(_display, root_window,
visual_info->visual, AllocNone);
break;
case StaticColor:
case StaticGray:
case GrayScale:
_colormap = XCreateColormap(_display, root_window,
visual_info->visual, AllocNone);
break;
default:
tinydisplay_cat.error()
<< "Could not allocate a colormap for visual class "
<< visual_class << ".\n";
break;
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::open_raw_mice
// Access: Private
// Description: Adds raw mice to the _input_devices list.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
open_raw_mice()
{
#ifdef HAVE_LINUX_INPUT_H
bool any_present = false;
bool any_mice = false;
for (int i=0; i<64; i++) {
uint8_t evtypes[EV_MAX/8 + 1];
ostringstream fnb;
fnb << "/dev/input/event" << i;
string fn = fnb.str();
int fd = open(fn.c_str(), O_RDONLY | O_NONBLOCK, 0);
if (fd >= 0) {
any_present = true;
char name[256];
char phys[256];
char uniq[256];
if ((ioctl(fd, EVIOCGNAME(sizeof(name)), name) < 0)||
(ioctl(fd, EVIOCGPHYS(sizeof(phys)), phys) < 0)||
(ioctl(fd, EVIOCGPHYS(sizeof(uniq)), uniq) < 0)||
(ioctl(fd, EVIOCGBIT(0, EV_MAX), &evtypes) < 0)) {
close(fd);
tinydisplay_cat.error() <<
"Opening raw mice: ioctl failed on " << fn << "\n";
} else {
if (test_bit(EV_REL, evtypes) || test_bit(EV_ABS, evtypes)) {
for (char *p=name; *p; p++) {
if (((*p<'a')||(*p>'z')) && ((*p<'A')||(*p>'Z')) && ((*p<'0')||(*p>'9'))) {
*p = '_';
}
}
for (char *p=uniq; *p; p++) {
if (((*p<'a')||(*p>'z')) && ((*p<'A')||(*p>'Z')) && ((*p<'0')||(*p>'9'))) {
*p = '_';
}
}
string full_id = ((string)name) + "." + uniq;
MouseDeviceInfo inf;
inf._fd = fd;
inf._input_device_index = _input_devices.size();
inf._io_buffer = "";
_mouse_device_info.push_back(inf);
GraphicsWindowInputDevice device =
GraphicsWindowInputDevice::pointer_only(this, full_id);
add_input_device(device);
tinydisplay_cat.info() << "Raw mouse " <<
inf._input_device_index << " detected: " << full_id << "\n";
any_mice = true;
} else {
close(fd);
}
}
} else {
if ((errno == ENOENT)||(errno == ENOTDIR)) {
break;
} else {
any_present = true;
tinydisplay_cat.error() <<
"Opening raw mice: " << strerror(errno) << " " << fn << "\n";
}
}
}
if (!any_present) {
tinydisplay_cat.error() <<
"Opening raw mice: files not found: /dev/input/event*\n";
} else if (!any_mice) {
tinydisplay_cat.error() <<
"Opening raw mice: no mouse devices detected in /dev/input/event*\n";
}
#else
tinydisplay_cat.error() <<
"Opening raw mice: panda not compiled with raw mouse support.\n";
#endif
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::poll_raw_mice
// Access: Private
// Description: Reads events from the raw mouse device files.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
poll_raw_mice()
{
#ifdef HAVE_LINUX_INPUT_H
for (int dev=0; dev<_mouse_device_info.size(); dev++) {
MouseDeviceInfo &inf = _mouse_device_info[dev];
// Read all bytes into buffer.
if (inf._fd >= 0) {
while (1) {
char tbuf[1024];
int nread = read(inf._fd, tbuf, sizeof(tbuf));
if (nread > 0) {
inf._io_buffer += string(tbuf, nread);
} else {
if ((nread < 0)&&((errno == EWOULDBLOCK) || (errno==EAGAIN))) {
break;
}
close(inf._fd);
inf._fd = -1;
break;
}
}
}
// Process events.
int nevents = inf._io_buffer.size() / sizeof(struct input_event);
if (nevents == 0) {
continue;
}
const input_event *events = (const input_event *)(inf._io_buffer.c_str());
GraphicsWindowInputDevice &dev = _input_devices[inf._input_device_index];
int x = dev.get_raw_pointer().get_x();
int y = dev.get_raw_pointer().get_y();
for (int i=0; i<nevents; i++) {
if (events[i].type == EV_REL) {
if (events[i].code == REL_X) x += events[i].value;
if (events[i].code == REL_Y) y += events[i].value;
} else if (events[i].type == EV_ABS) {
if (events[i].code == ABS_X) x = events[i].value;
if (events[i].code == ABS_Y) y = events[i].value;
} else if (events[i].type == EV_KEY) {
if ((events[i].code >= BTN_MOUSE)&&(events[i].code < BTN_MOUSE+8)) {
int btn = events[i].code - BTN_MOUSE;
dev.set_pointer_in_window(x,y);
if (events[i].value) {
dev.button_down(MouseButton::button(btn));
} else {
dev.button_up(MouseButton::button(btn));
}
}
}
}
inf._io_buffer.erase(0,nevents*sizeof(struct input_event));
dev.set_pointer_in_window(x,y);
}
#endif
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::handle_keystroke
// Access: Private
// Description: Generates a keystroke corresponding to the indicated
// X KeyPress event.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
handle_keystroke(XKeyEvent &event) {
_input_devices[0].set_pointer_in_window(event.x, event.y);
if (_ic) {
// First, get the keystroke as a wide-character sequence.
static const int buffer_size = 256;
wchar_t buffer[buffer_size];
Status status;
int len = XwcLookupString(_ic, &event, buffer, buffer_size, NULL,
&status);
if (status == XBufferOverflow) {
tinydisplay_cat.error()
<< "Overflowed input buffer.\n";
}
// Now each of the returned wide characters represents a
// keystroke.
for (int i = 0; i < len; i++) {
_input_devices[0].keystroke(buffer[i]);
}
} else {
// Without an input context, just get the ascii keypress.
ButtonHandle button = get_button(event);
if (button.has_ascii_equivalent()) {
_input_devices[0].keystroke(button.get_ascii_equivalent());
}
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::handle_keypress
// Access: Private
// Description: Generates a keypress corresponding to the indicated
// X KeyPress event.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
handle_keypress(XKeyEvent &event) {
_input_devices[0].set_pointer_in_window(event.x, event.y);
// Now get the raw unshifted button.
ButtonHandle button = get_button(event);
if (button != ButtonHandle::none()) {
_input_devices[0].button_down(button);
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::handle_keyrelease
// Access: Private
// Description: Generates a keyrelease corresponding to the indicated
// X KeyRelease event.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
handle_keyrelease(XKeyEvent &event) {
_input_devices[0].set_pointer_in_window(event.x, event.y);
// Now get the raw unshifted button.
ButtonHandle button = get_button(event);
if (button != ButtonHandle::none()) {
_input_devices[0].button_up(button);
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::get_button
// Access: Private
// Description: Returns the Panda ButtonHandle corresponding to the
// keyboard button indicated by the given key event.
////////////////////////////////////////////////////////////////////
ButtonHandle TinyXGraphicsWindow::
get_button(XKeyEvent &key_event) {
KeySym key = XLookupKeysym(&key_event, 0);
switch (key) {
case XK_BackSpace:
return KeyboardButton::backspace();
case XK_Tab:
return KeyboardButton::tab();
case XK_Return:
return KeyboardButton::enter();
case XK_Escape:
return KeyboardButton::escape();
case XK_space:
return KeyboardButton::space();
case XK_exclam:
return KeyboardButton::ascii_key('!');
case XK_quotedbl:
return KeyboardButton::ascii_key('"');
case XK_numbersign:
return KeyboardButton::ascii_key('#');
case XK_dollar:
return KeyboardButton::ascii_key('$');
case XK_percent:
return KeyboardButton::ascii_key('%');
case XK_ampersand:
return KeyboardButton::ascii_key('&');
case XK_apostrophe: // == XK_quoteright
return KeyboardButton::ascii_key('\'');
case XK_parenleft:
return KeyboardButton::ascii_key('(');
case XK_parenright:
return KeyboardButton::ascii_key(')');
case XK_asterisk:
return KeyboardButton::ascii_key('*');
case XK_plus:
return KeyboardButton::ascii_key('+');
case XK_comma:
return KeyboardButton::ascii_key(',');
case XK_minus:
return KeyboardButton::ascii_key('-');
case XK_period:
return KeyboardButton::ascii_key('.');
case XK_slash:
return KeyboardButton::ascii_key('/');
case XK_0:
return KeyboardButton::ascii_key('0');
case XK_1:
return KeyboardButton::ascii_key('1');
case XK_2:
return KeyboardButton::ascii_key('2');
case XK_3:
return KeyboardButton::ascii_key('3');
case XK_4:
return KeyboardButton::ascii_key('4');
case XK_5:
return KeyboardButton::ascii_key('5');
case XK_6:
return KeyboardButton::ascii_key('6');
case XK_7:
return KeyboardButton::ascii_key('7');
case XK_8:
return KeyboardButton::ascii_key('8');
case XK_9:
return KeyboardButton::ascii_key('9');
case XK_colon:
return KeyboardButton::ascii_key(':');
case XK_semicolon:
return KeyboardButton::ascii_key(';');
case XK_less:
return KeyboardButton::ascii_key('<');
case XK_equal:
return KeyboardButton::ascii_key('=');
case XK_greater:
return KeyboardButton::ascii_key('>');
case XK_question:
return KeyboardButton::ascii_key('?');
case XK_at:
return KeyboardButton::ascii_key('@');
case XK_A:
return KeyboardButton::ascii_key('A');
case XK_B:
return KeyboardButton::ascii_key('B');
case XK_C:
return KeyboardButton::ascii_key('C');
case XK_D:
return KeyboardButton::ascii_key('D');
case XK_E:
return KeyboardButton::ascii_key('E');
case XK_F:
return KeyboardButton::ascii_key('F');
case XK_G:
return KeyboardButton::ascii_key('G');
case XK_H:
return KeyboardButton::ascii_key('H');
case XK_I:
return KeyboardButton::ascii_key('I');
case XK_J:
return KeyboardButton::ascii_key('J');
case XK_K:
return KeyboardButton::ascii_key('K');
case XK_L:
return KeyboardButton::ascii_key('L');
case XK_M:
return KeyboardButton::ascii_key('M');
case XK_N:
return KeyboardButton::ascii_key('N');
case XK_O:
return KeyboardButton::ascii_key('O');
case XK_P:
return KeyboardButton::ascii_key('P');
case XK_Q:
return KeyboardButton::ascii_key('Q');
case XK_R:
return KeyboardButton::ascii_key('R');
case XK_S:
return KeyboardButton::ascii_key('S');
case XK_T:
return KeyboardButton::ascii_key('T');
case XK_U:
return KeyboardButton::ascii_key('U');
case XK_V:
return KeyboardButton::ascii_key('V');
case XK_W:
return KeyboardButton::ascii_key('W');
case XK_X:
return KeyboardButton::ascii_key('X');
case XK_Y:
return KeyboardButton::ascii_key('Y');
case XK_Z:
return KeyboardButton::ascii_key('Z');
case XK_bracketleft:
return KeyboardButton::ascii_key('[');
case XK_backslash:
return KeyboardButton::ascii_key('\\');
case XK_bracketright:
return KeyboardButton::ascii_key(']');
case XK_asciicircum:
return KeyboardButton::ascii_key('^');
case XK_underscore:
return KeyboardButton::ascii_key('_');
case XK_grave: // == XK_quoteleft
return KeyboardButton::ascii_key('`');
case XK_a:
return KeyboardButton::ascii_key('a');
case XK_b:
return KeyboardButton::ascii_key('b');
case XK_c:
return KeyboardButton::ascii_key('c');
case XK_d:
return KeyboardButton::ascii_key('d');
case XK_e:
return KeyboardButton::ascii_key('e');
case XK_f:
return KeyboardButton::ascii_key('f');
case XK_g:
return KeyboardButton::ascii_key('g');
case XK_h:
return KeyboardButton::ascii_key('h');
case XK_i:
return KeyboardButton::ascii_key('i');
case XK_j:
return KeyboardButton::ascii_key('j');
case XK_k:
return KeyboardButton::ascii_key('k');
case XK_l:
return KeyboardButton::ascii_key('l');
case XK_m:
return KeyboardButton::ascii_key('m');
case XK_n:
return KeyboardButton::ascii_key('n');
case XK_o:
return KeyboardButton::ascii_key('o');
case XK_p:
return KeyboardButton::ascii_key('p');
case XK_q:
return KeyboardButton::ascii_key('q');
case XK_r:
return KeyboardButton::ascii_key('r');
case XK_s:
return KeyboardButton::ascii_key('s');
case XK_t:
return KeyboardButton::ascii_key('t');
case XK_u:
return KeyboardButton::ascii_key('u');
case XK_v:
return KeyboardButton::ascii_key('v');
case XK_w:
return KeyboardButton::ascii_key('w');
case XK_x:
return KeyboardButton::ascii_key('x');
case XK_y:
return KeyboardButton::ascii_key('y');
case XK_z:
return KeyboardButton::ascii_key('z');
case XK_braceleft:
return KeyboardButton::ascii_key('{');
case XK_bar:
return KeyboardButton::ascii_key('|');
case XK_braceright:
return KeyboardButton::ascii_key('}');
case XK_asciitilde:
return KeyboardButton::ascii_key('~');
case XK_F1:
return KeyboardButton::f1();
case XK_F2:
return KeyboardButton::f2();
case XK_F3:
return KeyboardButton::f3();
case XK_F4:
return KeyboardButton::f4();
case XK_F5:
return KeyboardButton::f5();
case XK_F6:
return KeyboardButton::f6();
case XK_F7:
return KeyboardButton::f7();
case XK_F8:
return KeyboardButton::f8();
case XK_F9:
return KeyboardButton::f9();
case XK_F10:
return KeyboardButton::f10();
case XK_F11:
return KeyboardButton::f11();
case XK_F12:
return KeyboardButton::f12();
case XK_KP_Left:
case XK_Left:
return KeyboardButton::left();
case XK_KP_Up:
case XK_Up:
return KeyboardButton::up();
case XK_KP_Right:
case XK_Right:
return KeyboardButton::right();
case XK_KP_Down:
case XK_Down:
return KeyboardButton::down();
case XK_KP_Prior:
case XK_Prior:
return KeyboardButton::page_up();
case XK_KP_Next:
case XK_Next:
return KeyboardButton::page_down();
case XK_KP_Home:
case XK_Home:
return KeyboardButton::home();
case XK_KP_End:
case XK_End:
return KeyboardButton::end();
case XK_KP_Insert:
case XK_Insert:
return KeyboardButton::insert();
case XK_KP_Delete:
case XK_Delete:
return KeyboardButton::del();
case XK_Shift_L:
case XK_Shift_R:
return KeyboardButton::shift();
case XK_Control_L:
case XK_Control_R:
return KeyboardButton::control();
case XK_Alt_L:
case XK_Alt_R:
return KeyboardButton::alt();
case XK_Meta_L:
case XK_Meta_R:
return KeyboardButton::meta();
case XK_Caps_Lock:
return KeyboardButton::caps_lock();
case XK_Shift_Lock:
return KeyboardButton::shift_lock();
}
return ButtonHandle::none();
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::get_mouse_button
// Access: Private
// Description: Returns the Panda ButtonHandle corresponding to the
// mouse button indicated by the given button event.
////////////////////////////////////////////////////////////////////
ButtonHandle TinyXGraphicsWindow::
get_mouse_button(XButtonEvent &button_event) {
int index = button_event.button;
if (index == x_wheel_up_button) {
return MouseButton::wheel_up();
} else if (index == x_wheel_down_button) {
return MouseButton::wheel_down();
} else {
return MouseButton::button(index - 1);
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::check_event
// Access: Private, Static
// Description: This function is used as a predicate to
// XCheckIfEvent() to determine if the indicated queued
// X event is relevant and should be returned to this
// window.
////////////////////////////////////////////////////////////////////
Bool TinyXGraphicsWindow::
check_event(Display *display, XEvent *event, char *arg) {
const TinyXGraphicsWindow *self = (TinyXGraphicsWindow *)arg;
// We accept any event that is sent to our window.
return (event->xany.window == self->_xwindow);
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::create_full_frame_buffer
// Access: Private
// Description: Creates a suitable frame buffer for the current
// window size.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
create_full_frame_buffer() {
if (_full_frame_buffer != NULL) {
ZB_close(_full_frame_buffer);
_full_frame_buffer = NULL;
}
int mode;
switch (_bytes_per_pixel) {
case 1:
tinydisplay_cat.error()
<< "Palette images are currently not supported.\n";
return;
case 2:
mode = ZB_MODE_5R6G5B;
break;
case 4:
mode = ZB_MODE_RGBA;
break;
default:
return;
}
_full_frame_buffer = ZB_open(_properties.get_x_size(), _properties.get_y_size(), mode, 0, 0, 0, 0);
_pitch = (_full_frame_buffer->xsize * _bytes_per_pixel + 3) & ~3;
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::create_reduced_frame_buffer
// Access: Private
// Description: Creates a suitable frame buffer for the current
// window size and pixel zoom.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
create_reduced_frame_buffer() {
if (_reduced_frame_buffer != NULL) {
ZB_close(_reduced_frame_buffer);
_reduced_frame_buffer = NULL;
}
int x_size = get_fb_x_size();
int y_size = get_fb_y_size();
if (x_size == _full_frame_buffer->xsize) {
// No zooming is necessary.
} else {
// The reduced size is different, so we need a separate buffer to
// render into.
_reduced_frame_buffer = ZB_open(x_size, y_size, _full_frame_buffer->mode, 0, 0, 0, 0);
}
}
////////////////////////////////////////////////////////////////////
// Function: TinyXGraphicsWindow::create_ximage
// Access: Private
// Description: Creates a suitable XImage for the current
// window size.
////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow::
create_ximage() {
if (_ximage != NULL) {
if (_bytes_per_pixel != 4) {
PANDA_FREE_ARRAY(_ximage->data);
}
_ximage->data = NULL;
XDestroyImage(_ximage);
_ximage = NULL;
}
int image_size = _full_frame_buffer->ysize * _pitch;
char *data = NULL;
if (_bytes_per_pixel != 4) {
data = (char *)PANDA_MALLOC_ARRAY(image_size);
}
_ximage = XCreateImage(_display, _visual, _depth, ZPixmap, 0, data,
_full_frame_buffer->xsize, _full_frame_buffer->ysize,
32, 0);
}
#endif // HAVE_X11
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