Added Box2D
This commit is contained in:
Julian Nießner
335
external/Box2D-2.3.1/Box2D/glfw/x11_clipboard.c
vendored
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335
external/Box2D-2.3.1/Box2D/glfw/x11_clipboard.c
vendored
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//========================================================================
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// GLFW 3.0 X11 - www.glfw.org
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//------------------------------------------------------------------------
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// Copyright (c) 2010 Camilla Berglund <elmindreda@elmindreda.org>
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would
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// be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such, and must not
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// be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source
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// distribution.
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//
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//========================================================================
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#include "internal.h"
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#include <stdio.h>
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#include <limits.h>
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#include <string.h>
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#include <stdlib.h>
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// Returns whether the event is a selection event
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//
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static Bool isSelectionMessage(Display* display, XEvent* event, XPointer pointer)
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{
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return event->type == SelectionRequest ||
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event->type == SelectionNotify ||
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event->type == SelectionClear;
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}
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// Set the specified property to the selection converted to the requested target
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//
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static Atom writeTargetToProperty(const XSelectionRequestEvent* request)
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{
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int i;
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const Atom formats[] = { _glfw.x11.UTF8_STRING,
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_glfw.x11.COMPOUND_STRING,
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XA_STRING };
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const int formatCount = sizeof(formats) / sizeof(formats[0]);
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if (request->property == None)
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{
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// The requestor is a legacy client (ICCCM section 2.2)
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// We don't support legacy clients, so fail here
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return None;
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}
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if (request->target == _glfw.x11.TARGETS)
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{
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// The list of supported targets was requested
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const Atom targets[] = { _glfw.x11.TARGETS,
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_glfw.x11.MULTIPLE,
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_glfw.x11.UTF8_STRING,
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_glfw.x11.COMPOUND_STRING,
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XA_STRING };
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XChangeProperty(_glfw.x11.display,
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request->requestor,
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request->property,
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XA_ATOM,
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32,
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PropModeReplace,
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(unsigned char*) targets,
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sizeof(targets) / sizeof(targets[0]));
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return request->property;
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}
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if (request->target == _glfw.x11.MULTIPLE)
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{
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// Multiple conversions were requested
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Atom* targets;
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unsigned long i, count;
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count = _glfwGetWindowProperty(request->requestor,
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request->property,
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_glfw.x11.ATOM_PAIR,
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(unsigned char**) &targets);
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for (i = 0; i < count; i += 2)
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{
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int j;
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for (j = 0; j < formatCount; j++)
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{
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if (targets[i] == formats[j])
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break;
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}
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if (j < formatCount)
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{
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XChangeProperty(_glfw.x11.display,
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request->requestor,
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targets[i + 1],
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targets[i],
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8,
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PropModeReplace,
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(unsigned char*) _glfw.x11.selection.string,
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strlen(_glfw.x11.selection.string));
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}
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else
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targets[i + 1] = None;
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}
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XChangeProperty(_glfw.x11.display,
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request->requestor,
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request->property,
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_glfw.x11.ATOM_PAIR,
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32,
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PropModeReplace,
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(unsigned char*) targets,
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count);
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XFree(targets);
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return request->property;
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}
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if (request->target == _glfw.x11.SAVE_TARGETS)
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{
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// The request is a check whether we support SAVE_TARGETS
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// It should be handled as a no-op side effect target
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XChangeProperty(_glfw.x11.display,
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request->requestor,
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request->property,
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XInternAtom(_glfw.x11.display, "NULL", False),
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32,
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PropModeReplace,
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NULL,
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0);
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return request->property;
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}
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// Conversion to a data target was requested
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for (i = 0; i < formatCount; i++)
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{
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if (request->target == formats[i])
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{
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// The requested target is one we support
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XChangeProperty(_glfw.x11.display,
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request->requestor,
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request->property,
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request->target,
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8,
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PropModeReplace,
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(unsigned char*) _glfw.x11.selection.string,
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strlen(_glfw.x11.selection.string));
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return request->property;
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}
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}
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// The requested target is not supported
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return None;
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW internal API //////
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//////////////////////////////////////////////////////////////////////////
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void _glfwHandleSelectionClear(XEvent* event)
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{
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free(_glfw.x11.selection.string);
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_glfw.x11.selection.string = NULL;
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}
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void _glfwHandleSelectionRequest(XEvent* event)
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{
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const XSelectionRequestEvent* request = &event->xselectionrequest;
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XEvent response;
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memset(&response, 0, sizeof(response));
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response.xselection.property = writeTargetToProperty(request);
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response.xselection.type = SelectionNotify;
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response.xselection.display = request->display;
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response.xselection.requestor = request->requestor;
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response.xselection.selection = request->selection;
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response.xselection.target = request->target;
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response.xselection.time = request->time;
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XSendEvent(_glfw.x11.display, request->requestor, False, 0, &response);
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}
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void _glfwPushSelectionToManager(_GLFWwindow* window)
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{
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XConvertSelection(_glfw.x11.display,
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_glfw.x11.CLIPBOARD_MANAGER,
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_glfw.x11.SAVE_TARGETS,
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None,
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window->x11.handle,
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CurrentTime);
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for (;;)
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{
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XEvent event;
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if (!XCheckIfEvent(_glfw.x11.display, &event, isSelectionMessage, NULL))
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continue;
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switch (event.type)
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{
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case SelectionRequest:
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_glfwHandleSelectionRequest(&event);
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break;
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case SelectionClear:
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_glfwHandleSelectionClear(&event);
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break;
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case SelectionNotify:
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{
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if (event.xselection.target == _glfw.x11.SAVE_TARGETS)
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{
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// This means one of two things; either the selection was
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// not owned, which means there is no clipboard manager, or
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// the transfer to the clipboard manager has completed
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// In either case, it means we are done here
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return;
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}
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break;
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}
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}
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}
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}
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//////////////////////////////////////////////////////////////////////////
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////// GLFW platform API //////
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//////////////////////////////////////////////////////////////////////////
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void _glfwPlatformSetClipboardString(_GLFWwindow* window, const char* string)
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{
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free(_glfw.x11.selection.string);
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_glfw.x11.selection.string = strdup(string);
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XSetSelectionOwner(_glfw.x11.display,
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_glfw.x11.CLIPBOARD,
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window->x11.handle, CurrentTime);
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if (XGetSelectionOwner(_glfw.x11.display, _glfw.x11.CLIPBOARD) !=
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window->x11.handle)
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{
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"X11: Failed to become owner of the clipboard selection");
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}
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}
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const char* _glfwPlatformGetClipboardString(_GLFWwindow* window)
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{
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size_t i;
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const Atom formats[] = { _glfw.x11.UTF8_STRING,
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_glfw.x11.COMPOUND_STRING,
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XA_STRING };
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const size_t formatCount = sizeof(formats) / sizeof(formats[0]);
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if (_glfwFindWindowByHandle(XGetSelectionOwner(_glfw.x11.display,
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_glfw.x11.CLIPBOARD)))
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{
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// Instead of doing a large number of X round-trips just to put this
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// string into a window property and then read it back, just return it
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return _glfw.x11.selection.string;
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}
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free(_glfw.x11.selection.string);
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_glfw.x11.selection.string = NULL;
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for (i = 0; i < formatCount; i++)
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{
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char* data;
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XEvent event;
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XConvertSelection(_glfw.x11.display,
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_glfw.x11.CLIPBOARD,
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formats[i],
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_glfw.x11.GLFW_SELECTION,
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window->x11.handle, CurrentTime);
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// XCheckTypedEvent is used instead of XIfEvent in order not to lock
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// other threads out from the display during the entire wait period
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while (!XCheckTypedEvent(_glfw.x11.display, SelectionNotify, &event))
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;
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if (event.xselection.property == None)
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continue;
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if (_glfwGetWindowProperty(event.xselection.requestor,
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event.xselection.property,
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event.xselection.target,
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(unsigned char**) &data))
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{
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_glfw.x11.selection.string = strdup(data);
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}
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XFree(data);
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XDeleteProperty(_glfw.x11.display,
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event.xselection.requestor,
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event.xselection.property);
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if (_glfw.x11.selection.string)
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break;
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}
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if (_glfw.x11.selection.string == NULL)
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{
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_glfwInputError(GLFW_FORMAT_UNAVAILABLE,
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"X11: Failed to convert selection to string");
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}
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return _glfw.x11.selection.string;
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}
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